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Sample records for experiment fordetermining hysteretic

  1. Inverse modeling of a multistep outflow experiment fordetermining hysteretic hydraulic properties

    SciTech Connect

    Faybishenko, B.; Finsterle, S.; Sonnenborg, T.O.

    1998-05-01

    A new, closed-form hysteretic model of the capillary pressure-saturation and relative permeability-saturation relationship has been implemented into ITOUGH2. The hysteretic capillary pressure function is based on the van Genuchten model, with a modified version of the dependent domain model of Mualem to describe the scanning curves. Hysteresis in the relative permeability relations is considered to be mainly a result of nonwetting fluid entrap- ment. The hysteresis model was used in combination with inverse modeling techniques to examine the potential of a simple drainage- imbibition experiment to determine hysteretic hydraulic properties.

  2. Estimability analysis for optimization of hysteretic soil hydraulic parameters using data of a field irrigation experiment

    NASA Astrophysics Data System (ADS)

    Ngo, Viet V.; Gerke, Horst H.; Badorreck, Annika

    2014-05-01

    The estimability analysis has been proposed to improve the quality of parameter optimization. For field data, wetting and drying processes may complicate optimization of soil hydraulic parameters. The objectives of this study were to apply estimability analysis for improving optimization of soil hydraulic parameters and compare models with and without considering hysteresis. Soil water pressure head data of a field irrigation experiment were used. The one-dimensional vertical water movement in variably-saturated soil was described with the Richards equation using the HYDRUS-1D code. Estimability of the unimodal van Genuchten - Mualem hydraulic model parameters as well as of the hysteretic parameter model of Parker and Lenhard was classified according to a sensitivity coefficient matrix. The matrix was obtained by sequentially calculating effects of initial parameter variations on changes in the simulated pressure head values. Optimization was carried out by means of the Levenberg-Marquardt method as implemented in the HYDRUS-1D code. The parameters α, Ks, θs, and n in the nonhysteretic model were found sensitive and parameter θs and n strongly correlated with parameter n in the nonhysteretic model. When assuming hysteresis, the estimability was highest for αw and decreased with soil depth for Ks and αd, and increased for θs and n. The hysteretic model could approximate the pressure heads in the soil by considering parameters from wetting and drying periods separately as initial estimates. The inverse optimization could be carried out more efficiently with most estimable parameters. Despite the weaknesses of the local optimization algorithm and the inflexibility of the unimodal van Genuchten model, the results suggested that estimability analysis could be considered as a guidance to better define the optimization scenarios and then improved the determination of soil hydraulic parameters.

  3. An analytical model of dissipated viscous and hysteretic energy due to interaction forces in a pneumatic tire: Theory and experiments

    NASA Astrophysics Data System (ADS)

    Brancati, Renato; Strano, Salvatore; Timpone, Francesco

    2011-10-01

    When in use, a tire dissipates energy according to various mechanisms: rolling resistance, viscosity, hysteresis, friction energy, etc. This dissipation of energy contributes to influencing tire temperature, contact conditions and the resulting friction coefficient. This research project deals with viscoelastic and hysteretic mechanisms, and presents an explicit expression of the energy dissipated by tire-road interactions caused by these mechanisms. It is based on the Dahl model with regard to the hysteretic force together with a spring and a frequency variable damping coefficient with regard to the viscoelastic one. The energy expression found in this way can be used in tire thermal models to determine one of the heat flows needed to estimate the contact temperature and to find out the actual friction coefficient to be used in real time tire-road interaction models. Experimental tests were carried out, for longitudinal interaction only, in order to evaluate the effectiveness of the proposed expression by identifying the parameters and validating the results.

  4. Nonlinear Hysteretic Torsional Waves.

    PubMed

    Cabaret, J; Béquin, P; Theocharis, G; Andreev, V; Gusev, V E; Tournat, V

    2015-07-31

    We theoretically study and experimentally report the propagation of nonlinear hysteretic torsional pulses in a vertical granular chain made of cm-scale, self-hanged magnetic beads. As predicted by contact mechanics, the torsional coupling between two beads is found to be nonlinear hysteretic. This results in a nonlinear pulse distortion essentially different from the distortion predicted by classical nonlinearities and in a complex dynamic response depending on the history of the wave particle angular velocity. Both are consistent with the predictions of purely hysteretic nonlinear elasticity and the Preisach-Mayergoyz hysteresis model, providing the opportunity to study the phenomenon of nonlinear dynamic hysteresis in the absence of other types of material nonlinearities. The proposed configuration reveals a plethora of interesting phenomena including giant amplitude-dependent attenuation, short-term memory, as well as dispersive properties. Thus, it could find interesting applications in nonlinear wave control devices such as strong amplitude-dependent filters. PMID:26274421

  5. Nonlinear Hysteretic Torsional Waves

    NASA Astrophysics Data System (ADS)

    Cabaret, J.; Béquin, P.; Theocharis, G.; Andreev, V.; Gusev, V. E.; Tournat, V.

    2015-07-01

    We theoretically study and experimentally report the propagation of nonlinear hysteretic torsional pulses in a vertical granular chain made of cm-scale, self-hanged magnetic beads. As predicted by contact mechanics, the torsional coupling between two beads is found to be nonlinear hysteretic. This results in a nonlinear pulse distortion essentially different from the distortion predicted by classical nonlinearities and in a complex dynamic response depending on the history of the wave particle angular velocity. Both are consistent with the predictions of purely hysteretic nonlinear elasticity and the Preisach-Mayergoyz hysteresis model, providing the opportunity to study the phenomenon of nonlinear dynamic hysteresis in the absence of other types of material nonlinearities. The proposed configuration reveals a plethora of interesting phenomena including giant amplitude-dependent attenuation, short-term memory, as well as dispersive properties. Thus, it could find interesting applications in nonlinear wave control devices such as strong amplitude-dependent filters.

  6. Hysteretic effects of dry friction: modelling and experimental studies.

    PubMed

    Wojewoda, Jerzy; Stefański, Andrzej; Wiercigroch, Marian; Kapitaniak, Tomasz

    2008-03-13

    In this paper, the phenomena of hysteretic behaviour of friction force observed during experiments are discussed. On the basis of experimental and theoretical analyses, we argue that such behaviour can be considered as a representation of the system dynamics. According to this approach, a classification of friction models, with respect to their sensitivity on the system motion characteristic, is introduced. General friction modelling of the phenomena accompanying dry friction and a simple yet effective approach to capture the hysteretic effect are proposed. Finally, the experimental results are compared with the numerical simulations for the proposed friction model. PMID:17947206

  7. The hysteretic Hopfield neural network.

    PubMed

    Bharitkar, S; Mendel, J M

    2000-01-01

    A new neuron activation function based on a property found in physical systems--hysteresis--is proposed. We incorporate this neuron activation in a fully connected dynamical system to form the hysteretic Hopfield neural network (HHNN). We then present an analog implementation of this architecture and its associated dynamical equation and energy function.We proceed to prove Lyapunov stability for this new model, and then solve a combinatorial optimization problem (i.e., the N-queen problem) using this network. We demonstrate the advantages of hysteresis by showing increased frequency of convergence to a solution, when the parameters associated with the activation function are varied. PMID:18249816

  8. Scaling Relations Between Laboratory Scale Hysteretic Measurements for a Silty Loam Soil

    NASA Astrophysics Data System (ADS)

    Little, J.; Tindall, J.; Friedel, M.

    2006-12-01

    Moisture content is a key element of describing flow through unsaturated soils. Many laboratory experiments describe only a moisture retention curve when relating matric suction and moisture content, but that is only half of the picture. To fully characterize the relationship of matric suction and moisture content, the complete hysteretic function should be considered. This submission presents a relationship between soil samples of differing sizes and their hysteretic character. This relationship can be used to extrapolate the hysteretic and hydraulic properties of soils based on laboratory results derived from smaller samples. The applicability of Mualem's Independent Domain Theory (1974) at each scale is also considered.

  9. Stochastic Averaging of Duhem Hysteretic Systems

    NASA Astrophysics Data System (ADS)

    YING, Z. G.; ZHU, W. Q.; NI, Y. Q.; KO, J. M.

    2002-06-01

    The response of Duhem hysteretic system to externally and/or parametrically non-white random excitations is investigated by using the stochastic averaging method. A class of integrable Duhem hysteresis models covering many existing hysteresis models is identified and the potential energy and dissipated energy of Duhem hysteretic component are determined. The Duhem hysteretic system under random excitations is replaced equivalently by a non-hysteretic non-linear random system. The averaged Ito's stochastic differential equation for the total energy is derived and the Fokker-Planck-Kolmogorov equation associated with the averaged Ito's equation is solved to yield stationary probability density of total energy, from which the statistics of system response can be evaluated. It is observed that the numerical results by using the stochastic averaging method is in good agreement with that from digital simulation.

  10. Probing hysteretic elasticity in weakly nonlinear materials

    SciTech Connect

    Johnson, Paul A; Haupert, Sylvain; Renaud, Guillaume; Riviere, Jacques; Talmant, Maryline; Laugier, Pascal

    2010-12-07

    Our work is aimed at assessing the elastic and dissipative hysteretic nonlinear parameters' repeatability (precision) using several classes of materials with weak, intermediate and high nonlinear properties. In this contribution, we describe an optimized Nonlinear Resonant Ultrasound Spectroscopy (NRUS) measuring and data processing protocol applied to small samples. The protocol is used to eliminate the effects of environmental condition changes that take place during an experiment, and that may mask the intrinsic elastic nonlinearity. As an example, in our experiments, we identified external temperature fluctuation as a primary source of material resonance frequency and elastic modulus variation. A variation of 0.1 C produced a frequency variation of 0.01 %, which is similar to the expected nonlinear frequency shift for weakly nonlinear materials. In order to eliminate environmental effects, the variation in f{sub 0} (the elastically linear resonance frequency proportional to modulus) is fit with the appropriate function, and that function is used to correct the NRUS calculation of nonlinear parameters. With our correction procedure, we measured relative resonant frequency shifts of 10{sup -5} , which are below 10{sup -4}, often considered the limit to NRUS sensitivity under common experimental conditions. Our results show that the procedure is an alternative to the stringent control of temperature often applied. Applying the approach, we report nonlinear parameters for several materials, some with very small nonclassical nonlinearity. The approach has broad application to NRUS and other Nonlinear Elastic Wave Spectroscopy approaches.

  11. Modeling geologic storage of carbon dioxide: Comparison ofnon-hysteretic and hysteretic characteristic curves

    SciTech Connect

    Doughty, Christine

    2006-07-17

    Numerical models of geologic storage of carbon dioxide (CO2)in brine-bearing formations use characteristic curves to represent theinteractions of non-wetting-phase CO2 and wetting-phase brine. When aproblem includes both injection of CO2 (a drainage process) and itssubsequent post-injection evolution (a combination of drainage andwetting), hysteretic characteristic curves are required to correctlycapture the behavior of the CO2 plume. In the hysteretic formulation,capillary pressure and relative permeability depend not only on thecurrent grid-block saturation, but also on the history of the saturationin the grid block. For a problem that involves only drainage or onlywetting, a non-hysteretic formulation, in which capillary pressure andrelative permeability depend only on the current value of the grid-blocksaturation, is adequate. For the hysteretic formulation to be robustcomputationally, care must be taken to ensure the differentiability ofthe characteristic curves both within and beyond the turning-pointsaturations where transitions between branches of the curves occur. Twoexample problems involving geologic CO2 storage are simulated withTOUGH2, a multiphase, multicomponent code for flow and transport codethrough geological media. Both non-hysteretic and hysteretic formulationsare used, to illustrate the applicability and limitations ofnon-hysteretic methods.The first application considers leakage of CO2from the storage formation to the ground surface, while the secondexamines the role of heterogeneity within the storageformation.

  12. Hysteretic magnetoresistance and unconventional anomalous Hall effect in the frustrated magnet TmB4

    NASA Astrophysics Data System (ADS)

    Sunku, Sai Swaroop; Kong, Tai; Ito, Toshimitsu; Canfield, Paul C.; Shastry, B. Sriram; Sengupta, Pinaki; Panagopoulos, Christos

    2016-05-01

    We study TmB4, a frustrated magnet on the Archimedean Shastry-Sutherland lattice, through magnetization and transport experiments. The lack of anisotropy in resistivity shows that TmB4 is an electronically three-dimensional system. The magnetoresistance (MR) is hysteretic at low temperature even though a corresponding hysteresis in magnetization is absent. The Hall resistivity shows unconventional anomalous Hall effect (AHE) and is linear above saturation despite a large MR. We propose that complex structures at magnetic domain walls may be responsible for the hysteretic MR and may also lead to the AHE.

  13. Hysteretic magnetoresistance and unconventional anomalous Hall effect in the frustrated magnet TmB4

    NASA Astrophysics Data System (ADS)

    Sunku, Sai Swaroop; Kong, Tai; Ito, Toshimitsu; Canfield, Paul C.; Shastry, B. Sriram; Sengupta, Pinaki; Panagopoulos, Christos

    We study TmB4, a frustrated magnet on the Archimedean Shastry-Sutherland lattice, through magnetization and transport experiments. The lack of anisotropy in resistivity shows that TmB4 is an electronically three-dimensional system. The magnetoresistance (MR) is hysteretic at low-temperature even though a corresponding hysteresis in magnetization is absent. The Hall resistivity shows unconventional anomalous Hall effect (AHE) and is linear above saturation despite a large MR. We suggest that both hysteretic MR and AHE arise from the formation of complex non-coplanar structures at magnetic domain walls. Current address: Department of Applied Physics and Applied Mathematics, Columbia University.

  14. Hysteretic magnetoresistance and unconventional anomalous Hall effect in the frustrated magnet TmB4

    DOE PAGESBeta

    Sunku, Sai Swaroop; Kong, Tai; Ito, Toshimitsu; Canfield, Paul C.; Shastry, B. Sriram; Sengupta, Pinaki; Panagopoulos, Christos

    2016-05-11

    We study TmB4, a frustrated magnet on the Archimedean Shastry-Sutherland lattice, through magnetization and transport experiments. The lack of anisotropy in resistivity shows that TmB4 is an electronically three-dimensional system. The magnetoresistance (MR) is hysteretic at low temperature even though a corresponding hysteresis in magnetization is absent. The Hall resistivity shows unconventional anomalous Hall effect (AHE) and is linear above saturation despite a large MR. In conclusion, we propose that complex structures at magnetic domain walls may be responsible for the hysteretic MR and may also lead to the AHE.

  15. Random Response of Linear Hysteretic Damping

    SciTech Connect

    Floris, Claudio

    2008-07-08

    The probabilistic characterization of the response of a single-degree-of-freedom (SDOF) oscillator with linear hysteretic damping excited by ground motion described by zero mean stationary Gaussian processes is achieved by profiting from a steady-state solution of the motion equation, valid when the excitation is given by the superposition of harmonics. The model of linear hysteretic damping has been introduced to fit damping mechanisms in which the dissipation rate is independent of frequency, and mathematically it is described by the Hilbert transform of the response. Though this model is debated since it violates the principle of causality, its intrinsic simplicity makes it preferable to other models. The steady-state solution of the motion equation proposed in this paper allows a closed form evaluation of the respone mean square value. However, the numerical examples show that this quantity is affected by the mechanism of energy dissipation only when this is large. On the contrary, for a low capacity of dissipation the response mean square value is rather insensitive to the dissipation mechanism.

  16. Assessing catchment connectivity using hysteretic loops

    NASA Astrophysics Data System (ADS)

    Keesstra, Saskia; Masselink, Rens; Goni, Mikel; Campo, Miguel Angel; Gimenez, Rafael; Casali, Javier; Seeger, Manuel

    2015-04-01

    Sediment connectivity is a concept which can explain the origin, pathways and sinks of sediments within landscapes. This information is valuable for land managers to be able to take appropriate action at the correct place. Hysteresis between sediment and water discharge can give important information about the sources , pathways and conditions of sediment that arrives at the outlet of a catchment. "Hysteresis" happens when the sediment concentration associated with a certain flow rate is different depending on the direction in which the analysis is performed -towards the increase or towards the diminution of the flow. This phenomenon to some extent reflects the way in which the runoff generation processes are conjugated with those of the production and transport of sediments, hence the usefulness of hysteresis as a diagnostic hydrological parameter. However, the complexity of the phenomena and factors which determine hysteresis make its interpretation uncertain or, at the very least, problematic. Many types of hysteretic loops have been described as well as the cause for the shape of the loop, mainly describing the origin of the sediments. In this study, several measures to objectively classify hysteretic loops in an automated way were developed. These were consecutively used to classify several hundreds of loops from several agricultural catchments in Northern Spain. The data set for this study comes from four experimental watersheds in Navarre (Spain), owned and maintained by the Government of Navarre. These experimental watersheds have been monitored and studied since 1996 (La Tejería and Latxaga) and 2001 (Oskotz "principal", Op, and Oskotz "woodland", Ow). La Tejería and Latxaga watersheds, located in the Central Western part of Navarre, are roughly similar to each other regarding size (approximately 200 ha), geology (marls and sandstones), soils (fine texture topsoil), climate (humid sub Mediterranean) and land use (80-90% cultivated with winter grain crops

  17. The hysteretic evapotranspiration - vapor pressure deficit relation

    NASA Astrophysics Data System (ADS)

    Zhang, Q.; Manzoni, S.; Katul, G. G.; Porporato, A. M.; Yang, D.

    2013-12-01

    Diurnal hysteresis between evapotranspiration (ET) and vapor pressure deficit (VPD) was reported in many ecosystems but justification for its onset and magnitude remain incomplete with biotic and abiotic factors invoked as possible explanations. To place these explanations within a mathematical framework, ';rate-dependent' hysteresis originating from a phase angle difference between periodic input and output time series is first considered. Lysimeter evaporation (E) measurements from wet bare soils and model calculations using the Penman equation demonstrate that the E-VPD hysteresis emerges without any biotic effects due to a phase angle difference (or time lag) between net radiation the main driver of E, and VPD. Modulations originating from biotic effects on the ET-VPD hysteresis were then considered. The phase angle difference representation earlier employed was mathematically transformed into a storage problem and applied to the soil-plant system. The transformed system shows that soil moisture storage within the root zone can produce an ET-VPD hysteresis prototypical of those generated by phase-angle differences. To explore the interplay between all the lags in the soil-plant-atmosphere system and phase angle differences among forcing and response variables, a detailed soil-plant-atmosphere continuum (SPAC) model was developed and applied to a grassland ecosystem. The results of the SPAC model suggest that the hysteresis magnitude depends on the radiation-VPD lag. The soil moisture dry-down simulations also suggest that modeled root water potential and leaf water potential are both better indicators of the hysteresis magnitude than soil moisture, suggesting that plant water status is the main factor regulating the hysteretic relation between ET and VPD. Hence, the genesis and magnitude of the ET-VPD hysteresis are controlled directly by both biotic factors and abiotic factors such as time lag between radiation and VPD originating from boundary layer processes

  18. Hysteretic behavior of prestressed concrete bridge pier with fiber model.

    PubMed

    Wang, Hui-li; Feng, Guang-qi; Qin, Si-feng

    2014-01-01

    The hysteretic behavior and seismic characteristics of the prestressed concrete bridge pier were researched. The effects of the prestressed tendon ratio, the longitudinal reinforcement ratio, and the stirrup reinforcement ratio on the hysteretic behavior and seismic characteristics of the prestressed concrete bridge pier have been obtained with the fiber model analysis method. The analysis show some results about the prestressed concrete bridge pier. Firstly, greater prestressed tendon ratio and more longitudinal reinforcement can lead to more obvious pier's hysteresis loop "pinching effect," smaller residual displacement, and lower energy dissipation capacity. Secondly, the greater the stirrup reinforcement ratio is, the greater the hysteresis loop area is. That also means that bridge piers will have better ductility and stronger shear capacity. The results of the research will provide a theoretical basis for the hysteretic behavior analysis of the prestressed concrete pier. PMID:24578635

  19. Hysteretic behavior of spin-crossover noise driven system

    NASA Astrophysics Data System (ADS)

    Gudyma, Iurii; Maksymov, Artur; Dimian, Mihai

    2016-04-01

    The influence of white Gaussian noise on hysteretic behavior of spin-crossover system is analyzed in the framework of stochastic Langevin dynamics. Various stochastic simulations are performed and several important properties of spin-transition in spin-crossover system driven by noise are reproduced. The numerical results are tested against the stationary probability function and the associated dynamic potential obtained from Fokker-Planck equation corresponding to spin-crossover Langevin dynamics. The dependence of light-induced optical hysteresis width and non-hysteretic transition curve slope on the noise intensity is illustrated. The role of low-spin and high-spin phase stabilities in the hysteretic behavior of noise-driven spin-crossover system is discussed.

  20. Magnetic Field Sampling using a Pulsed Hysteretic SQUID

    NASA Astrophysics Data System (ADS)

    Kwon, S. P.; Vlahacos, C. P.; Berkley, A. J.; Gubrud, M. A.; Wellstood, F. C.; Cawthorne, A.

    2004-03-01

    Weak magnetic field detection using a non-hysteretic DC SQUID with Flux-Locked-Loop electronics is typically limited to 1MHz bandwidth or less. However, there is demand for larger bandwidth magnetic field detection for use in the semiconductor industry. We have studied the possibility of using a 4.2K hysteretic trilayer Nb DC SQUID, fabricated by Hypres Inc., with pulsed bias current to increase the bandwidth by an order of magnitude or more. The technique is based on the fast switching of a hysteretic SQUID from the superconducting state to the normal conducting state. By observing the switching of the SQUID, the applied magnetic field at the time of a pulse can be followed. Experimental results show that the technique can be used to follow magnetic fields of up to 60MHz with 5ns pulses. With shorter pulses and better electronics, the technique could further increase the bandwidth by another order of magnitude.

  1. Dynamic hysteretic sensing model of bending-mode Galfenol transducer

    SciTech Connect

    Cao, Shuying Zheng, Jiaju; Sang, Jie; Zhang, Pengfei; Wang, Bowen; Huang, Wenmei

    2015-05-07

    A dynamic hysteretic sensing model has been developed to predict the dynamic responses of the magnetic induction, the stress, and the output voltage for a bending-mode Galfenol unimorph transducer subjected simultaneously to acceleration and bias magnetic field. This model is obtained by coupling the hysteretic Armstrong model and the structural dynamic model of the Galfenol unimorph beam. The structural dynamic model of the beam is founded based on the Euler-Bernouli beam theory, the nonlinear constitutive equations, and the Faraday law of electromagnetic induction. Comparisons between the calculated and measured results show the model can describe dynamic nonlinear voltage characteristics of the device, and can predict hysteretic behaviors between the magnetic induction and the stress. Moreover, the model can effectively analyze the effects of the bias magnetic field, the acceleration amplitude, and frequency on the root mean square voltage of the device.

  2. Hysteretic Behavior of Prestressed Concrete Bridge Pier with Fiber Model

    PubMed Central

    Hui-li, Wang; Guang-qi, Feng; Si-feng, Qin

    2014-01-01

    The hysteretic behavior and seismic characteristics of the prestressed concrete bridge pier were researched. The effects of the prestressed tendon ratio, the longitudinal reinforcement ratio, and the stirrup reinforcement ratio on the hysteretic behavior and seismic characteristics of the prestressed concrete bridge pier have been obtained with the fiber model analysis method. The analysis show some results about the prestressed concrete bridge pier. Firstly, greater prestressed tendon ratio and more longitudinal reinforcement can lead to more obvious pier's hysteresis loop “pinching effect,” smaller residual displacement, and lower energy dissipation capacity. Secondly, the greater the stirrup reinforcement ratio is, the greater the hysteresis loop area is. That also means that bridge piers will have better ductility and stronger shear capacity. The results of the research will provide a theoretical basis for the hysteretic behavior analysis of the prestressed concrete pier. PMID:24578635

  3. Hysteretic dynamics of active particles in a periodic orienting field

    PubMed Central

    Romensky, Maksym; Scholz, Dimitri; Lobaskin, Vladimir

    2015-01-01

    Active motion of living organisms and artificial self-propelling particles has been an area of intense research at the interface of biology, chemistry and physics. Significant progress in understanding these phenomena has been related to the observation that dynamic self-organization in active systems has much in common with ordering in equilibrium condensed matter such as spontaneous magnetization in ferromagnets. The velocities of active particles may behave similar to magnetic dipoles and develop global alignment, although interactions between the individuals might be completely different. In this work, we show that the dynamics of active particles in external fields can also be described in a way that resembles equilibrium condensed matter. It follows simple general laws, which are independent of the microscopic details of the system. The dynamics is revealed through hysteresis of the mean velocity of active particles subjected to a periodic orienting field. The hysteresis is measured in computer simulations and experiments on unicellular organisms. We find that the ability of the particles to follow the field scales with the ratio of the field variation period to the particles' orientational relaxation time, which, in turn, is related to the particle self-propulsion power and the energy dissipation rate. The collective behaviour of the particles due to aligning interactions manifests itself at low frequencies via increased persistence of the swarm motion when compared with motion of an individual. By contrast, at high field frequencies, the active group fails to develop the alignment and tends to behave like a set of independent individuals even in the presence of interactions. We also report on asymptotic laws for the hysteretic dynamics of active particles, which resemble those in magnetic systems. The generality of the assumptions in the underlying model suggests that the observed laws might apply to a variety of dynamic phenomena from the motion of

  4. Hysteretic dynamics of active particles in a periodic orienting field.

    PubMed

    Romensky, Maksym; Scholz, Dimitri; Lobaskin, Vladimir

    2015-07-01

    Active motion of living organisms and artificial self-propelling particles has been an area of intense research at the interface of biology, chemistry and physics. Significant progress in understanding these phenomena has been related to the observation that dynamic self-organization in active systems has much in common with ordering in equilibrium condensed matter such as spontaneous magnetization in ferromagnets. The velocities of active particles may behave similar to magnetic dipoles and develop global alignment, although interactions between the individuals might be completely different. In this work, we show that the dynamics of active particles in external fields can also be described in a way that resembles equilibrium condensed matter. It follows simple general laws, which are independent of the microscopic details of the system. The dynamics is revealed through hysteresis of the mean velocity of active particles subjected to a periodic orienting field. The hysteresis is measured in computer simulations and experiments on unicellular organisms. We find that the ability of the particles to follow the field scales with the ratio of the field variation period to the particles' orientational relaxation time, which, in turn, is related to the particle self-propulsion power and the energy dissipation rate. The collective behaviour of the particles due to aligning interactions manifests itself at low frequencies via increased persistence of the swarm motion when compared with motion of an individual. By contrast, at high field frequencies, the active group fails to develop the alignment and tends to behave like a set of independent individuals even in the presence of interactions. We also report on asymptotic laws for the hysteretic dynamics of active particles, which resemble those in magnetic systems. The generality of the assumptions in the underlying model suggests that the observed laws might apply to a variety of dynamic phenomena from the motion of

  5. Studying the hysteretic behaviour of unconsolidated sediments using an electroencephalography apparatus: a laboratory study.

    NASA Astrophysics Data System (ADS)

    Ruggeri, Paolo; Jougnot, Damien; Chavarriaga, Ricardo; Brandner, Catherine; del Rocio Millán Ruiz, José; Linde, Niklas

    2015-04-01

    In soil science, the hysteretic nature of the water retention curve plays an important role in describing a soil's propensity to retain water and conduct fluid flow. However, hysteresis effects remain difficult to study and to quantify. Geophysical methods provide suitable and non-invasive tools that could be used for this purpose. For example, the degree of water saturation in a soil can be determined by measuring its electrical resistivity, while a water flux through a soil generates a measureable electrical potential difference (streaming potential). The objective of this work is to study the hysteretic behaviour of unconsolidated sediments during repeated drainage and imbibition cycles under well-constrained laboratory conditions. Monitoring was performed using a 32-electrode electroencephalography (EEG) apparatus (Biosemi) coupled with a current injection system. We used a 150 cm high sand-filled column in which we monitored self-potential (SP) signals using 15 electrodes in direct contact with the medium (so-called "naked" electrodes), and 15 electrodes that were inserted in small porous pots that were filled with water of the same conductivity and chloride concentration as the water saturating the sand (so-called "chamber" electrodes). For both electrode types, the electrodes were placed between 5 and 145 cm height with an electrode spacing of 10 cm. Pressure (10 tensiometers) and mass, together with the temperature and the relative humidity in the room, were constantly monitored for the entire duration of the experiments. We performed ten cycles of drainage and imbibition by changing the water level of an external reservoir connected to the column. Each drainage and imbibition cycle took approximately 25 and 17 hours, respectively, for a total duration of the experiment of 24 days. After each imbibition and drainage cycle, we performed complex conductivity measurements by injecting a known electric current at two electrodes using a sine wave with varying

  6. Investigating catchment-scale hysteretic behaviour of nutrients at annual and individual storm time-resolutions.

    NASA Astrophysics Data System (ADS)

    Lloyd, Charlotte; Freer, Jim; Johnes, Penny; Collins, Adrian

    2013-04-01

    The European Water Framework Directive (WFD) requires that all water bodies should be maintained at, or raised to, good ecological status, driven by improved integrated catchment management. Therefore, it is necessary to implement cost-effective mitigation strategies to reduce pollution from nutrients and improve overall water quality. If successful mitigation strategies are to be designed then it is imperative that catchment scale responses to environmental and anthropogenic changes are better understood. Against this background, this presentation investigates changes in hysteretic behaviours of nutrients in response to different environmental drivers using high resolution monitoring techniques. Observations of hysteretic behaviour can provide insights into the dominant flow pathways of pollutants. Therefore, monitoring changes in nutrient hysteresis can provide a useful tool for detecting regime differences or changes within and between catchments. In the UK, the Demonstration Test Catchment (DTC) project has been set up to monitor evidence for improving water quality problems arising specifically from diffuse pollution from agriculture using targeted mitigation experiments and high resolution monitoring. This research platform provides an opportunity to compare storm-driven nutrient behaviour between catchments which have differing geologies, as well as how these behaviours evolve on a seasonal and annual basis. The monitoring to date has included a period of drought, directly followed by extreme wet conditions in the UK and therefore offers opportunities to assess the effect of differences in antecedent conditions on monitored nutrient response to rainfall events. The study compares the hysteretic behaviour of nutrients, including nitrogen and phosphorus species as well as sediment from a number of storm events of varying magnitudes throughout the 2011-2012 monitoring period in the Hampshire Avon catchment as part of the DTC programme. The investigation focuses

  7. Microscopic Theory of Hysteretic Hydrogen Adsorption in Nanoporous Materials

    SciTech Connect

    Kang, J.; Wei, S. H.; Kim, Y. H.

    2010-01-01

    Understanding gas adsorption confined in nanoscale pores is a fundamental issue with broad applications in catalysis and gas storage. Recently, hysteretic H{sub 2} adsorption was observed in several nanoporous metal-organic frameworks (MOFs). Here, using first-principles calculations and simulated adsorption/desorption isotherms, we present a microscopic theory of the enhanced adsorption hysteresis of H{sub 2} molecules using the MOF Co(1,4-benzenedipyrazolate) [Co(BDP)] as a model system. Using activated H{sub 2} diffusion along the small-pore channels as a dominant equilibration process, we demonstrate that the system shows hysteretic H{sub 2} adsorption under changes of external pressure. For a small increase of temperature, the pressure width of the hysteresis, as well as the adsorption/desorption pressure, dramatically increases. The sensitivity of gas adsorption to temperature changes is explained by the simple thermodynamics of the gas reservoir. Detailed analysis of transient adsorption dynamics reveals that the hysteretic H{sub 2} adsorption is an intrinsic adsorption characteristic in the diffusion-controlled small-pore systems.

  8. Plane stress problems using hysteretic rigid body spring network models

    NASA Astrophysics Data System (ADS)

    Christos, Sofianos D.; Vlasis, Koumousis K.

    2016-08-01

    In this work, a discrete numerical scheme is presented capable of modeling the hysteretic behavior of 2D structures. Rigid Body Spring Network (RBSN) models that were first proposed by Kawai (Nucl Eng Des 48(1):29-207, 1978) are extended to account for hysteretic elastoplastic behavior. Discretization is based on Voronoi tessellation, as proposed specifically for RBSN models to ensure uniformity. As a result, the structure is discretized into convex polygons that form the discrete rigid bodies of the model. These are connected with three zero length, i.e., single-node springs in the middle of their common facets. The springs follow the smooth hysteretic Bouc-Wen model which efficiently incorporates classical plasticity with no direct reference to a yield surface. Numerical results for both static and dynamic loadings are presented, which validate the proposed simplified spring-mass formulation. In addition, they verify the model's applicability on determining primarily the displacement field and plastic zones compared to the standard elastoplastic finite element method.

  9. Principle and validation of modified hysteretic models for magnetorheological dampers

    NASA Astrophysics Data System (ADS)

    Bai, Xian-Xu; Chen, Peng; Qian, Li-Jun

    2015-08-01

    Magnetorheological (MR) dampers, semi-active actuators for vibration and shock control systems, have attracted increasing attention during the past two decades. However, it is difficult to establish a precise mathematical model for the MR dampers and their control systems due to their intrinsic strong nonlinear hysteretic behavior. A phenomenological model based on the Bouc-Wen model can be used to effectively describe the nonlinear hysteretic behavior of the MR dampers, but the structure of the phenomenological model is complex and the Bouc-Wen model is functionally redundant. In this paper, based on the phenomenological model, (1) a normalized phenomenological model is derived through incorporating a ‘normalization’ concept, and (2) a restructured model, also incorporating the ‘normalization’ concept, is proposed and realized. In order to demonstrate this, a multi-islands genetic algorithm (GA) is employed to identify the parameters of the restructured model, the normalized phenomenological model, and the phenomenological model. The performance of the three models for describing and predicting the damping force characteristics of the MR dampers are compared and analyzed using the identified parameters. The research results indicate that, as compared with the phenomenological model and the normalized phenomenological model, (1) the restructured model can not only effectively decrease the number of the model parameters and reduce the complexity of the model, but can also describe the nonlinear hysteretic behavior of MR dampers more accurately, and (2) the meanings of several model parameters of the restructured model are clearer and the initial ranges of the model parameters are more explicit, which is of significance for parameter identification.

  10. Global adaptive control for uncertain nonaffine nonlinear hysteretic systems.

    PubMed

    Liu, Yong-Hua; Huang, Liangpei; Xiao, Dongming; Guo, Yong

    2015-09-01

    In this paper, the global output tracking is investigated for a class of uncertain nonlinear hysteretic systems with nonaffine structures. By combining the solution properties of the hysteresis model with the novel backstepping approach, a robust adaptive control algorithm is developed without constructing a hysteresis inverse. The proposed control scheme is further modified to tackle the bounded disturbances by adaptively estimating their bounds. It is rigorously proven that the designed adaptive controllers can guarantee global stability of the closed-loop system. Two numerical examples are provided to show the effectiveness of the proposed control schemes. PMID:26169122

  11. Fast, Low-Power, Hysteretic Level-Detector Circuit

    NASA Technical Reports Server (NTRS)

    Arditti, Mordechai

    1993-01-01

    Circuit for detection of preset levels of voltage or current intended to replace standard fast voltage comparator. Hysteretic analog/digital level detector operates at unusually low power with little sacrifice of speed. Comprises low-power analog circuit and complementary metal oxide/semiconductor (CMOS) digital circuit connected in overall closed feedback loop to decrease rise and fall times, provide hysteresis, and trip-level control. Contains multiple subloops combining linear and digital feedback. Levels of sensed signals and hysteresis level easily adjusted by selection of components to suit specific application.

  12. Hysteretic transitions in the Kuramoto model with inertia

    NASA Astrophysics Data System (ADS)

    Torcini, Alessandro; Olmi, Simona; Navas, Adrian; Boccaletti, Stefano

    2015-03-01

    We report finite size numerical investigations and mean field analysis of a Kuramoto model with inertia for fully coupled and diluted systems. In particular, we examine the transition from incoherence to coherence for increasingly large system size and inertia. For sufficiently large inertia the transition is hysteretic and within the hysteretic region clusters of locked oscillators of various sizes and different levels of synchronization coexist. A modification of the mean field theory developed by Tanaka, Lichtenberg, and Oishi allows to derive the synchronization curve associated to each of these clusters. We have also investigated numerically the limits of existence of the coherent and of the incoherent solutions. The minimal coupling required to observe the coherent state is largely independent of the system size and it saturates to a constant value already for moderately large inertia values. The incoherent state is observable up to a critical coupling whose value saturates for large inertia and for finite system sizes, while in the thermodinamic limit this critical value diverges proportionally to the mass. By increasing the inertia the transition becomes more complex, and the synchronization occurs via the emergence of clusters of coherently drifting oscillators. Financial support has been provided by the Italian Ministry of University and Research within the project CRISIS LAB PNR 2011-2013.

  13. A nonlinear magneto-thermo-elastic coupled hysteretic constitutive model for magnetostrictive alloys

    NASA Astrophysics Data System (ADS)

    Jin, Ke; Kou, Yong; Zheng, Xiaojing

    2012-06-01

    This paper presents a general hysteretic constitutive law of nonlinear magneto-thermo-elastic coupling for magnetostrictive alloys. The model considered here is thermodynamically motivated and based on the Gibbs free energy function. A nonlinear part of the elastic strain arising from magnetic domain rotation induced by the pre-stress is taken into account. Furthermore, the movement of the domain walls is incorporated to describe hysteresis based on Jiles-Atherton's model. Then a set of closed and analytical expressions of the constitutive law for the magnetostrictive rods and films are obtained, and the parameters appearing in the model can be determined by those measurable experiments in mechanics and physics. Comparing this model with other existing models in this field, the quantitative results show that the relationships obtained here are more effective to describe the effects of the pre-stress or in-plane residual stress and ambient temperature on the magnetization or the magnetostriction hysteresis loops.

  14. Identification of an extended Bouc-Wen model with application to seismic protection through hysteretic devices

    NASA Astrophysics Data System (ADS)

    Sireteanu, Tudor; Giuclea, M.; Mitu, A. M.

    2010-04-01

    In this paper is proposed an extended Bouc-Wen model for improving its capability to approximate experimental symmetric hysteretic loops. On the basis of the generalized equation there are defined integral and differential conditions that describe the essential geometric properties of a hysteretic curve. Next, a new method based on Genetic Algorithms is developed to identify the Bouc-Wen model parameters from experimental hysteretic loops obtained from periodic loading tests. The performance of presented approach is illustrated for two types of seismic protection devices with hysteretic characteristics: elastomeric base isolators and buckling restrained dissipative braces. The applicability of proposed method is highlighted by using the derived models to analyse by numerical simulation the efficiency of these devices for reducing seismic response of a three stories civil structure.

  15. Hysteretic memory and end plate effects on the response of a flexible cylinder undergoing Vortex-Induced Vibrations (VIV)

    NASA Astrophysics Data System (ADS)

    Gedikli, Ersegun Deniz; Dahl, Jason M.

    2015-11-01

    The response of rigid cylinders undergoing VIV has been observed to be hysteretic with respect to the nominal reduced velocity, as transition of the wake is delayed dependent on whether the flow has been slowed down or sped up. In the present study, a similar behavior is observed for a flexible, tension-dominated cylinder, however the hysteretic behavior is shown to affect the transition between excited modes. The test cylinder has diameter of 6.35 mm, aspect ratio of 40 and mass ratio of 3.76. The dynamic response of the cylinder is measured visually, by tracking 26 dots along the span of the cylinder using two high-speed cameras between the Reynolds number of 1080 and 4660. It is observed that a clear memory effect exists, where the speed at which transition between the first mode and second mode excitation in the cross-flow direction changes dependent on whether the flow is increasing or decreasing in speed. A second series of experiments is conducted to investigate end plate effects on the flexible cylinder. Experiments are conducted with and without an end plate located at the end pivot point on the cylinder. Clear differences are observed between each condition illustrating the strong three-dimensional behavior of vortex shedding behind the flexible cylinder.

  16. Stochastic averaging of energy envelope of Preisach hysteretic systems

    NASA Astrophysics Data System (ADS)

    Wang, Y.; Ying, Z. G.; Zhu, W. Q.

    2009-04-01

    A new stochastic averaging technique for analyzing the response of a single-degree-of-freedom Preisach hysteretic system with nonlocal memory under stationary Gaussian stochastic excitation is proposed. An equivalent nonhysteretic nonlinear system with amplitude-envelope-dependent damping and stiffness is firstly obtained from the given system by using the generalized harmonic balance technique. The relationship between the amplitude envelope and the energy envelope is then established, and the equivalent damping and stiffness coefficients are expressed as functions of the energy envelope. The available range of the yielding force of the system is extended and also the strong nonlinear stiffness of the system is incorporated so as to improve the response prediction. Finally, an averaged Itô stochastic differential equation for the energy envelope of the system as one-dimensional diffusion process is derived by using the stochastic averaging method of energy envelope, and the Fokker-Planck-Kolmogorov equation associated with the averaged Itô equation is solved to obtain stationary probability densities of the energy envelope and amplitude envelope. The approximate solutions are validated by using the Monte Carlo simulation.

  17. Hysteretic behavior and magnetic ordering in CeRuSn

    NASA Astrophysics Data System (ADS)

    Mydosh, J. A.; Strydom, A. M.; Baenitz, M.; Chevalier, B.; Hermes, W.; Pöttgen, R.

    2011-02-01

    We report the thermodynamic and transport properties of the newly synthesized Ce-intermetallic compound CeRuSn. This ternary stannide possesses an unconventional structure with two Ce sites at room temperature which exhibit different valencies. Just below room temperature there are large thermal hysteretic effects in the magnetic susceptibility, in the specific heat, as well as in electronic and heat transport properties suggesting the formation of an incommensurate charge density wave modulation whose q vector changes as a function of temperature. Our measurements indicate that one site displays magnetic Ce3+ behavior while the other is a valence fluctuator. At 2.7 K antiferromagnetic long-range order occurs within one-half of the Ce sites, e.g., the magnetic entropy of the transition is (1)/(2)Rln2. Below TN a series of metamagnetic transitions takes place in rather small fields (~1-2 T), leaving a magnetically fluctuating background. Such behavior is unique among the many Ce-transition-metal compounds.

  18. Assessing the severity of fatigue crack using acoustics modulated by hysteretic vibration for a cantilever beam

    NASA Astrophysics Data System (ADS)

    He, Qingbo; Lin, Yin

    2016-05-01

    This paper investigates fatigue crack severity assessment using acoustics modulated by hysteretic vibration for a cantilever beam. In this study, a nonlinear oscillator system is constructed to induce the hysteretic frequency response of the cantilever beam in dynamics, and the hysteretic vibration is then used to modulate the acoustic waves to generate the vibro-acoustic modulation (VAM) effect. Through modulation of hysteretic vibration, the hysteretic response of the VAM can be achieved. The experimental results further validated that the VAM hysteresis phenomenon can be enhanced with the increase of crack severity owing to the change of beam's effective stiffness. Simulations in the proposed physical model explained the reason of enhancement of hysteresis phenomenon. Combined with nonlinear bistable structural model, a fatigue crack severity assessment approach was proposed by evaluating the hysteretic region (e.g., bandwidth or jumping frequency) in the vibration frequency response of the VAM effect. The reported study is valuable in building a monotonic relationship to assess the severity of fatigue crack by a nonlinear acoustics approach.

  19. Modeling geologic storage of carbon dioxide: Comparison ofnon-hysteretic chracteristic curves

    SciTech Connect

    Doughty, Christine

    2006-04-28

    TOUGH2 models of geologic storage of carbon dioxide (CO2) in brine-bearing formations use characteristic curves to represent the interactions of non-wetting-phase CO2 and wetting-phase brine. When a problem includes both injection of CO2 (a drainage process) and its subsequent post-injection evolution (a combination of drainage and wetting), hysteretic characteristic curves are required to correctly capture the behavior of the CO2 plume. In the hysteretic formulation, capillary pressure and relative permeability depend not only on the current grid-block saturation, but also on the history of the saturation in the grid block. For a problem that involves only drainage or only wetting, a nonhysteretic formulation, in which capillary pressure and relative permeability depend only on the current value of the grid-block saturation, is adequate. For the hysteretic formulation to be robust computationally, care must be taken to ensure the differentiability of the characteristic curves both within and beyond the turning-point saturations where transitions between branches of the curves occur. Two example problems involving geologic CO2 storage are simulated using non-hysteretic and hysteretic models, to illustrate the applicability and limitations of non-hysteretic methods: the first considers leakage of CO2 from the storage formation to the ground surface, while the second examines the role of heterogeneity within the storage formation.

  20. Domain switching mechanisms in polycrystalline ferroelectrics with asymmetric hysteretic behavior

    NASA Astrophysics Data System (ADS)

    Anton, Eva-Maria; García, R. Edwin; Key, Thomas S.; Blendell, John E.; Bowman, Keith J.

    2009-01-01

    A numerical method is presented to predict the effect of microstructure on the local polarization switching of bulk ferroelectric ceramics. The model shows that a built-in electromechanical field develops in a ferroelectric material as a result of the spatial coupling of the grains and the direct physical coupling between the thermomechanical and electromechanical properties of a bulk ceramic material. The built-in fields that result from the thermomechanically induced grain-grain electromechanical interactions result in the appearance of four microstructural switching mechanisms: (1) simple switching, where the c-axes of ferroelectric domains will align with the direction of the applied macroscopic electric field by starting from the core of each grain; (2) grain boundary induced switching, where the domain's switching response will initiate at grain corners and boundaries as a result of the polarization and stress that is locally generated from the strong anisotropy of the dielectric permittivity and the local piezoelectric contributions to polarization from the surrounding material; (3) negative poling, where abutting ferroelectric domains of opposite polarity actively oppose domain switching by increasing their degree of tetragonality by interacting with the surrounding domains that have already switched to align with the applied electrostatic field. Finally, (4) domain reswitching mechanism is observed at very large applied electric fields, and is characterized by the appearance of polarization domain reversals events in the direction of their originally unswitched state. This mechanism is a consequence of the competition between the macroscopic applied electric field, and the induced electric field that results from the neighboring domains (or grains) interactions. The model shows that these built-in electromechanical fields and mesoscale mechanisms contribute to the asymmetry of the macroscopic hysteretic behavior in poled samples. Furthermore, below a

  1. Hysteretic pinching of human secondary osteons subjected to torsion.

    PubMed

    Ascenzi, Maria-Grazia; Di Comite, Mariasevera; Mitov, Plamen; Kabo, John Michael

    2007-01-01

    The mechanical behavior of bone tissue's ultra- and micro- structure is fundamental to assessment of macroscopic bone mechanics. This paper explores the ultra-structural characteristics of human femoral tissue responsible for energy absorption of secondary osteons under mechanical loading. A novel mathematical interpretation of single osteon mechanics elucidates the behavior of the collagen-apatite interface. Fully calcified single osteon specimens were mechanically tested quasi-statically under cyclic torsional loading about their longitudinal axis. On each hysteretic diagram, all cycles after the initial monotonic cycle appear pinched and share two points. Stiffness degradation and pinching degradation were investigated on the torque versus deflection-angle-per-unit-length diagrams as the number of cycles increases, in relation to the appearance of osteons in cross-section under circularly polarized light microscopy. Material science's Bauschinger effect, originally defined for metals and later extended to structures reinforced with metal bars, is adapted to describe pinching. Material science's prying effect, defined as amplification of eccentric tensile load through lever action, is employed to explain pinching. The presence of the two points shared by all complete cycles is analyzed in terms of the mathematical fixed point theorem. The results allow formulation of the following conjectures: (1) the prying of carbonated apatite crystallites at the interface with the 40 nm long bands of non-calcified collagen fibrils causes pinching; (2) the prying effect increases with the increasing percentage of collagen-apatite elements that form a larger angle with the osteon axis; and (3) micro-cracks increase more in number than in length as the number of cycles increases. PMID:17399724

  2. A proposed model to include a residual NAPL saturation in a hysteretic capillary pressure saturation relationship

    NASA Astrophysics Data System (ADS)

    Van Geel, P. J.; Roy, S. D.

    2002-09-01

    A residual non-aqueous phase liquid (NAPL) present in the vadose zone can act as a contaminant source for many years as the compounds of concern partition to infiltrating groundwater and air contained in the soil voids. Current pressure-saturation-relative permeability relationships do not include a residual NAPL saturation term in their formulation. This paper presents the results of series of two- and three-phase pressure cell experiments conducted to evaluate the residual NAPL saturation and its impact on the pressure-saturation relationship. A model was proposed to incorporate a residual NAPL saturation term into an existing hysteretic three-phase parametric model developed by Parker and Lenhard [Water Resour. Res. 23(12) (1987) 2187], Lenhard and Parker [Water Resour. Res. 23(12) (1987) 2197] and Lenhard [J. Contam. Hydrol. 9 (1992) 243]. The experimental results indicated that the magnitude of the residual NAPL saturation was a function of the maximum total liquid saturation reached and the water saturation. The proposed model to incorporate a residual NAPL saturation term is similar in form to the entrapment model proposed by Parker and Lenhard, which was based on an expression presented by Land [Soc. Pet. Eng. J. (June 1968) 149].

  3. Multilevel radiative thermal memory realized by the hysteretic metal-insulator transition of vanadium dioxide

    NASA Astrophysics Data System (ADS)

    Ito, Kota; Nishikawa, Kazutaka; Iizuka, Hideo

    2016-02-01

    Thermal information processing is attracting much interest as an analog of electronic computing. We experimentally demonstrated a radiative thermal memory utilizing a phase change material. The hysteretic metal-insulator transition of vanadium dioxide (VO2) allows us to obtain a multilevel memory. We developed a Preisach model to explain the hysteretic radiative heat transfer between a VO2 film and a fused quartz substrate. The transient response of our memory predicted by the Preisach model agrees well with the measured response. Our multilevel thermal memory paves the way for thermal information processing as well as contactless thermal management.

  4. User's Guide for Hysteretic Capillary Pressure and Relative Permeability Functions in iTOUGH2

    SciTech Connect

    Doughty, C.A.

    2009-08-01

    The precursor of TOUGH2, TOUGH, was originally developed with non-hysteretic characteristic curves. Hysteretic capillary pressure functions were implemented in TOUGH in the late 1980s by Niemi and Bodvarsson (1988), and hysteretic capillary pressure and relative permeability functions were added to iTOUGH2 about ten years later by Finsterle et al. (1998). Recently, modifications were made to the iTOUGH2 hysteretic formulation to make it more robust and efficient (Doughty, 2007). Code development is still underway, with the ultimate goal being a hysteretic module that fits into the standard TOUGH2 (Pruess et al., 1991) framework. This document provides a user's guide for the most recent version of the hysteretic code, which runs within iTOUGH2 (Finsterle, 1999a,b,c). The current code differs only slightly from what was presented in Doughty (2007), hence that document provides the basic information on the processes being modeled and how they are conceptualized. This document focuses on a description of the user-specified parameters required to run hysteretic iTOUGH2. In the few instances where the conceptualization differs from that of Doughty (2007), the features described here are the current ones. Sample problems presented in this user's guide use the equation-of-state module ECO2N (Pruess, 2005). The components present in ECO2N are H{sub 2}O, NaCl, and CO{sub 2}. Two fluid phases and one solid phase are considered: an aqueous phase, which primarily consists of liquid H2O and may contain dissolved NaCl and CO{sub 2}; a supercritical phase which primarily consists of CO{sub 2}, but also includes a small amount of gaseous H{sub 2}O; and a solid phase consisting of precipitated NaCl. Details of the ECO2N formulation may be found in Pruess (2005). The aqueous phase is the wetting phase and is denoted ''liquid'', whereas the supercritical phase is the non-wetting phase and is denoted ''gas''. The hysteretic formalism may be applied to other iTOUGH2 equation

  5. Spatial, Hysteretic, and Adaptive Host-Guest Chemistry in a Metal-Organic Framework with Open Watson-Crick Sites.

    PubMed

    Cai, Hong; Li, Mian; Lin, Xiao-Rong; Chen, Wei; Chen, Guang-Hui; Huang, Xiao-Chun; Li, Dan

    2015-09-01

    Biological and artificial molecules and assemblies capable of supramolecular recognition, especially those with nucleobase pairing, usually rely on autonomous or collective binding to function. Advanced site-specific recognition takes advantage of cooperative spatial effects, as in local folding in protein-DNA binding. Herein, we report a new nucleobase-tagged metal-organic framework (MOF), namely ZnBTCA (BTC=benzene-1,3,5-tricarboxyl, A=adenine), in which the exposed Watson-Crick faces of adenine residues are immobilized periodically on the interior crystalline surface. Systematic control experiments demonstrated the cooperation of the open Watson-Crick sites and spatial effects within the nanopores, and thermodynamic and kinetic studies revealed a hysteretic host-guest interaction attributed to mild chemisorption. We further exploited this behavior for adenine-thymine binding within the constrained pores, and a globally adaptive response of the MOF host was observed. PMID:26178173

  6. Stochastic optimal semi-active control of hysteretic systems by using a magneto-rheological damper

    NASA Astrophysics Data System (ADS)

    Cheng, H.; Zhu, W. Q.; Ying, Z. G.

    2006-06-01

    A stochastic optimal semi-active control strategy for stochastically excited hysteretic systems by using a magneto-rheological (MR) damper is proposed. The dynamics of both the hysteretic system and the MR damper is characterized by using the Bouc-Wen hysteretic model. The control force produced by the damper is split into a passive part and a semi-active part. The passive part is combined with the uncontrolled system to form a passively controlled system. Then the system is converted into an equivalent nonlinear non-hysteretic stochastic system, from which a partially averaged Itô stochastic differential equation is derived by using the stochastic averaging method of the energy envelope. For the ergodic control problem, a dynamical programming equation is established based on the stochastic dynamical programming principle and solved to yield the optimal semi-active control law. The fully averaged Itô equation is obtained by substituting the optimal semi-active control force into the partially averaged Itô equation and completing the averaging. Finally, the response of the semi-actively controlled system is obtained from solving the Fokker-Planck-Kolmogorov equation associated with the fully averaged Itô equation. The efficacy of the proposed control strategy is illustrated by the numerical results and comparison with clipped LQG control for an example.

  7. COMPARING SIMULATED AND EXPERIMENTAL HYSTERETIC TWO- PHASE TRANSIENT FLUID FLOW PHENOMENA

    EPA Science Inventory

    A hysteretic model for two-phase permeability (k)-saturation (S)-pressure (P) relations is outlined that accounts for effects of nonwetting fluid entrapment. The model can be employed in unsaturated fluid flow computer codes to predict temporal and spatial fluid distributions. Co...

  8. An investigation on the field strength and loading rate dependences of the hysteretic dynamics of magnetorheological dampers

    NASA Astrophysics Data System (ADS)

    Zhang, Cheng; Chen, Zhangwei; Wang, Linxiang

    2015-02-01

    This paper is an extended study on the model of the hysteretic dynamics of magnetorheological dampers based on a phenomenological phase transition theory (Wang and Kamath in Smart Mater. Struct. 15(6):1725-1733, 2006). It is demonstrated that, by appropriately choosing model parameters, the frequency dependence of the hysteretic dynamics can be captured very well by the model based on phase transition theory. Whilst by introducing an appropriate rescaling coefficient to account for the strength of the magnetized particle chains with various magnetic field strengths, the field strength dependence of the hysteretic dynamics can also be captured very well by the same differential equation with the same set of model parameters. There are in total eight model parameters introduced for capturing the hysteretic dynamics, including its dependence on the loading rate and field strength.

  9. User's Guide for Hysteretic Capillary Pressure and Relative Permeability Functions in TOUGH2

    SciTech Connect

    Doughty, C. A.

    2013-03-01

    This document provides a user’s guide for the most recent version of the hysteretic code, which runs within iTOUGH2 (Finsterle, 1999a,b,c) or TOUGH2 V2.1 (Pruess et al., 2012). The usage of the hysteretic module is the same in both codes, which for brevity here are both referred to simply as TOUGH2. The current code differs only slightly from what was presented in Doughty (2007), hence that document provides the basic information on the processes being modeled and how they are conceptualized. This document focuses on a description of the user-specified parameters required to run hysteretic TOUGH2. In the few instances where the conceptualization differs from that of Doughty (2007), the features described here are the current ones. Sample problems presented in this user’s guide use the equation-of-state module ECO2N (Pruess, 2005). The components present in ECO2N are H{sub 2}O, NaCl, and CO{sub 2}. Two fluid phases and one solid phase are considered: an aqueous phase, which primarily consists of liquid H{sub 2}O and may contain dissolved NaCl and CO{sub 2}; a supercritical phase which primarily consists of CO{sub 2}, but also includes a small amount of gaseous H{sub 2}O; and a solid phase consisting of precipitated NaCl. Details of the ECO2N formulation may be found in Pruess (2005). The aqueous phase is the wetting phase and is denoted ‘liquid’, whereas the supercritical phase is the non-wetting phase and is denoted ‘gas’. The hysteretic formalism may be applied to other TOUGH2 equation-of-state modules that consider two fluid phases, as long as the liquid phase is the wetting phase and the gas phase is the non-wetting phase.

  10. Vibration control of an MR vehicle suspension system considering both hysteretic behavior and parameter variation

    NASA Astrophysics Data System (ADS)

    Choi, Seung-Bok; Seong, Min-Sang; Ha, Sung-Hoon

    2009-12-01

    This paper presents vibration control responses of a controllable magnetorheological (MR) suspension system considering the two most important characteristics of the system; the field-dependent hysteretic behavior of the MR damper and the parameter variation of the suspension. In order to achieve this goal, a cylindrical MR damper which is applicable to a middle-sized passenger car is designed and manufactured. After verifying the damping force controllability, the field-dependent hysteretic behavior of the MR damper is identified using the Preisach hysteresis model. The full-vehicle suspension model is then derived by considering vertical, pitch and roll motions. An H_{\\infty } controller is designed by treating the sprung mass of the vehicle as a parameter variation and integrating it with the hysteretic compensator which produces additional control input. In order to demonstrate the effectiveness and robustness of the proposed control system, the hardware-in-the-loop simulation (HILS) methodology is adopted by integrating the suspension model with the proposed MR damper. Vibration control responses of the vehicle suspension system such as vertical acceleration are evaluated under both bump and random road conditions.

  11. Spatially Extended Avalanches in a Hysteretic Capillary Condensation System: Superfluid {sup {bold 4}}He in Nuclepore

    SciTech Connect

    Lilly, M.P.; Wootters, A.H.; Hallock, R.B.

    1996-11-01

    Capacitive studies of hysteretic capillary condensation of superfluid {sup 4}He in Nuclepore have shown that the initial draining of the pores occurs over a small range of the chemical potential with avalanches present as groups of pores drain. In the work reported here, the avalanches in this system are shown to be nonlocal events which involve pores distributed at low density across the entire sample. The nonlocal avalanche behavior is shown to be enabled by the presence of a superfluid film connection among the pores. {copyright} {ital 1996 The American Physical Society.}

  12. Modelling hysteretic behaviour in magnetorheological fluids and dampers using phase-transition theory

    NASA Astrophysics Data System (ADS)

    Wang, L. X.; Kamath, H.

    2006-12-01

    A dynamical mathematical model is proposed to model the hysteretic behaviour of magnetorheological fluids and dampers using phase-transition theory. To construct the model involving hysteresis, the magnetorheological fluids are assumed to be switchable between different phases upon the application of a shear strain rate, with one solid-like phase and two fluid-like phases. The Landau theory for phase transition is employed to model the dynamics of the phase transition in the fluids. The proposed model is able to capture hysteresis loops, and is rate dependent (frequency dependent). A comparison between predicted and experimental behaviour of the damper is presented, and perfect agreement is obtained.

  13. Hysteretic depinning and dynamical melting for magnetically interacting vortices in disordered layered superconductors

    SciTech Connect

    Olson, C. J.; Reichhardt, C.; Vinokur, V. M.

    2001-10-01

    We examine the depinning transitions and the temperature versus driving force phase diagram for magnetically interacting pancake vortices in layered superconductors. For strong disorder the initial depinning is plastic followed by a sharp hysteretic transition to a three-dimensional ordered state for increasing driving force. Our results are in good agreement with theoretical predictions for driven anisotropic charge-density wave systems. We also show that a temperature induced peak effect in the critical current occurs due to the onset of plasticity between the layers.

  14. Superfluidity and mean-field energy loops: Hysteretic behavior in Bose-Einstein condensates

    SciTech Connect

    Mueller, Erich J.

    2002-12-01

    We present a theory of hysteretic phenomena in Bose gases, using superfluidity in one-dimensional rings and in optical lattices as primary examples. Through this study we are able to give a physical interpretation of swallow-tail loops recently found by many authors in the mean-field energy structure of trapped atomic gases. These loops are a generic sign of hysteresis, and in the present context are an indication of superfluidity. We have also calculated the rate of decay of metastable current-carrying states due to quantum fluctuations.

  15. Hysteretic mode exchange in the wake of two circular cylinders in tandem

    NASA Astrophysics Data System (ADS)

    Tasaka, Yuji; Kon, Seiji; Schouveiler, Lionel; Le Gal, Patrice

    2006-08-01

    Our experimental study is devoted to the analysis of the flow past two tandem circular cylinders near the vortex shedding threshold. A recent bidimensional numerical analysis of this flow [Mizushima and Suehiro, Phys. Fluids 17, 104107 (2005)] has predicted that the bifurcation diagram should become complex in the vicinity of the instability threshold. Subcritical and saddle node bifurcations that lead to hysteretic exchanges between two different modes of vortex shedding were detected for particular distances of separation of the cylinders. We present here visualizations and velocity measurements of this flow in a water channel that prove the robustness of the complexity of the bifurcation diagram in real flows.

  16. Using high-resolution water quality monitoring to investigate hysteretic behaviour of nutrients at catchment scale

    NASA Astrophysics Data System (ADS)

    Lloyd, C.; Freer, J. E.; Johnes, P.; Collins, A.

    2013-12-01

    Changing climate and a growing population are increasing pressures on the world's water bodies. Maintaining food security has resulted in changes in agricultural practices, leading to adverse impacts on water quality. To address this problem robust evidence is needed to determine which on-farm mitigation strategies are likely to be most effective in reducing pollutant impacts. The introduction of in-situ quasi-continuous monitoring of water quality provides the means to improve the characterisation of pollutant behaviour and gain new understanding of hydrological and biogeochemical processes occurring within catchments. Here we use a suite of in-situ monitoring sensors to investigate changes in hysteretic patterns of nutrients in response to different environmental drivers. Observations of hysteretic behaviour can provide insights into the dominant transport pathways of pollutants. Therefore, monitoring changes in nutrient hysteresis can provide a useful tool for detecting catchment change. Such data also improves the quantification of pollutant loads and concentration dynamics. In the UK, the Demonstration Test Catchments (DTC) programme has been established to deliver evidence for improvements in water quality arising specifically from the deployment of measures to mitigate diffuse pollution from agriculture using high resolution in-situ monitoring. This research platform provides an opportunity to compare storm-driven nutrient behaviour between catchments which have differing geologies, and determine how these behaviours evolve on a seasonal and annual basis. The monitoring to date has included a period of drought in WY2011, directly followed by extreme wet conditions in the UK in WY2012 and therefore offers opportunities to assess the effect of differences in antecedent conditions on monitored nutrient response to rainfall events. The study compares the hysteretic behaviour of nutrients, including nitrogen and phosphorus species as well as turbidity from a

  17. Propagation of flexural waves in inhomogeneous plates exhibiting hysteretic nonlinearity: Nonlinear acoustic black holes.

    PubMed

    Gusev, Vitalyi E; Ni, Chenyin; Lomonosov, Alexey; Shen, Zhonghua

    2015-08-01

    Theory accounting for the influence of hysteretic nonlinearity of micro-inhomogeneous material on flexural wave in the plates of continuously varying thickness is developed. For the wedges with thickness increasing as a power law of distance from its edge strong modifications of the wave dynamics with propagation distance are predicted. It is found that nonlinear absorption progressively disappearing with diminishing wave amplitude leads to complete attenuation of acoustic waves in most of the wedges exhibiting black hole phenomenon. It is also demonstrated that black holes exist beyond the geometrical acoustic approximation. Applications include nondestructive evaluation of micro-inhomogeneous materials and vibrations damping. PMID:25937493

  18. First passage times in M2[X ]|G |1 |R queue with hysteretic overload control policy

    NASA Astrophysics Data System (ADS)

    Pechinkin, Alexander V.; Razumchik, Rostislav R.; Zaryadov, Ivan S.

    2016-06-01

    One of the reported approaches towards the solution of overload problem in networks of SIP servers is the implementation of multi-level hysteretic control of arrivals in SIP servers. Each level, being the parameter of the policy, specifies operation mode of SIP server i.e. it implicitly indicates what SIP server must do with the arriving packets. The choice of parameters' values is not guided by standards and is usually left for the network owner. In general, all operation modes of the considered policy can be grouped into two groups: normal mode (when all arriving packets are accepted) and congested mode (when part or all arriving packets are being dropped). Such grouping may serve as the criteria for choosing parameters' values of the policy: pick those values which minimize SIP server sojourn time in congested mode. In this short note we propose some analytical results which facilitate the solution of stated minimization problem. The considered mathematical model of SIP server is the queueing system M2[X ]|G |1 |R with batch arrivals and bi-level hysteretic control policy, which specifies three operation modes: normal (customers both flows are accepted), overload (only customers from one flow are accepted), discard (customers from both flows are blocked/lost)). The switching between modes can occur only on service completions. Analytical method allowing computation of stationary sojourn times in different operation modes (as well as first passage times between modes) is presented in brief. Numerical example is given.

  19. Hysteretic behavior of special shaped columns composed of steel and reinforced concrete (SRC)

    NASA Astrophysics Data System (ADS)

    Chen, Zongping; Xu, Jinjun; Xue, Jianyang

    2015-06-01

    This paper describes a series of experimental investigations on seventeen specimens of steel reinforced concrete special shaped (SRCSS) columns under low cyclic reversed loading using parallel crosshead equipment. Nine T-shaped SRC columns, four L-shaped SRC columns and four +-shaped SRC columns were tested to examine the effects of shape steel configuration, loading angle, axial compressive ratio and shear-span ratio on the behavior (strength, stiffness, energy dissipation, ductility, etc.) of SRCSS column specimens. The failure modes and hysteretic performance of all the specimens were obtained in the tests. Test results demonstrate that the shear-span ratio is the main parameter affecting the failure modes of SRCSS columns. The specimens with small shear-span ratio are prone to shear failure, and the primary failure planes in SRCSS columns are parallel to the loading direction. As a result, there is a symmetry between positive and negative loading directions in the hysteretic curves of the SRCSS columns. The majority of displacement ductility coefficients for all the specimens are over 3.0, so that the SRCSS columns demonstrate a better deformation capacity. In addition, the equivalent viscous damping coefficients of all the specimens are greater than 0.2, indicating that the seismic behavior of SRCSS columns is adequate. Finally, the superposition theory was used to calculate the limits of axial compressive ratio for the specimens, and it is found that the test axial compressive ratio is close to or smaller than the calculated axial compressive ratio limit.

  20. Numerical Calculation of Nonlinear Seismic Pulse Propagation in a Hysteretic Elastic Material

    NASA Astrophysics Data System (ADS)

    Kosik, Dan

    2007-04-01

    The stress-strain relation for materials such as soil and sand exhibit hysteretic elastic behavior and are modeled using the Preisach-Mayergoyz method for a numerical calculation of a propagating seismic pulse. The source pulse is taken to be the result of pressure applied to the inner surface of a cylindrical cavity in order to simulate a two dimensional dynamite source. The nonlinear differential equation of motion that is solved includes traditional nonlinear elasticity terms appropriate to materials with atomic elasticity and the dominant anelastic terms appropriate to consolidated materials that exhibit hysteretic elastic behavior. For parameters characteristic of sand at the Earth's surface, a comparison of nonlinear to linear seismic pulse propagation gives a nonlinear pulse with a much larger amplitude and slower propagation speed than a corresponding linear pulse. These results have important implications for the detailed behavior of strong seismic waves moving in soft sediments, their dominant frequencies, amplitudes, and methods by which they may be attenuated will depend on getting the detailed pulse structure right.

  1. An Accretion Disk-outflow Model for Hysteretic State Transition in X-Ray Binaries

    NASA Astrophysics Data System (ADS)

    Cao, Xinwu

    2016-01-01

    We suggest a model of the advection-dominated accretion flow (ADAF) with magnetically driven outflows to explain the hysteretic state transition observed in X-ray binaries (XRBs). The transition from a thin disk to an ADAF occurs when the mass accretion rate is below a critical value. The critical mass accretion rate for the ADAF can be estimated by equating the equilibration timescale to the accretion timescale of the ADAF, which is sensitive to its radial velocity. The radial velocity of thin disks is very small, which leads to the advection of the external field in thin disks becoming very inefficient. ADAFs are present in the low/hard states of XRBs, and their radial velocity is large compared with the thin disk. The external field can be dragged inward efficiently by the ADAF, so a strong large-scale magnetic field threading the ADAF can be formed, which may accelerate a fraction of gas in the ADAF into the outflows. Such outflows may carry away a large amount of angular momentum from the ADAF, which significantly increases the radial velocity of the ADAF. This leads to a high critical mass accretion rate, below which an ADAF with magnetic outflows can survive. Our calculations show that the critical luminosity of the ADAF with magnetic outflows can be one order of magnitude higher than that for a conventional ADAF, if the ratio of gas to magnetic pressure β ∼ 4 in the disk. This can naturally explain the hysteretic state transition observed in XRBs.

  2. Numerical Simulation of Hysteretic Live Load Effect in a Soil-Steel Bridge

    NASA Astrophysics Data System (ADS)

    Sobótka, Maciej

    2014-03-01

    The paper presents numerical simulation of hysteretic live load effect in a soil-steel bridge. The effect was originally identified experimentally by Machelski [1], [2]. The truck was crossing the bridge one way and the other in the full-scale test performed. At the same time, displacements and stress in the shell were measured. The major conclusion from the research was that the measured quantities formed hysteretic loops. A numerical simulation of that effect is addressed in the present work. The analysis was performed using Flac finite difference code. The methodology of solving the mechanical problems implemented in Flac enables us to solve the problem concerning a sequence of load and non-linear mechanical behaviour of the structure. The numerical model incorporates linear elastic constitutive relations for the soil backfill, for the steel shell and the sheet piles, being a flexible substructure for the shell. Contact zone between the shell and the soil backfill is assumed to reflect elastic-plastic constitutive model. Maximum shear stress in contact zone is limited by the Coulomb condition. The plastic flow rule is described by dilation angle ψ = 0. The obtained results of numerical analysis are in fair agreement with the experimental evidence. The primary finding from the performed simulation is that the slip in the interface can be considered an explanation of the hysteresis occurrence in the charts of displacement and stress in the shell.

  3. On Response of a Single-Degree-of-Freedom Oscillator with Constant Hysteretic Damping Under Arbitrary Excitation

    NASA Astrophysics Data System (ADS)

    Chakraborty, Goutam

    2016-05-01

    The simple constant hysteretic damping model is known to be non-causal although it is used often in diverse branches of engineering. In this paper the response of a single degree of freedom oscillator having linear hysteretic damping under arbitrary force excitation has been studied after deriving the impulse response function of the system. Some shortcomings of the results available in literature have been pointed out. It has been shown that the damping model can be practically used for calculating the response of a physical system when the damping is small and the force has small duration.

  4. Modeling of the hysteretic phenomena in RHEED intensity variation versus temperature for GaAs and InAs surfaces

    SciTech Connect

    Nemcsics, Akos; Takacs, Jenoe

    2011-01-15

    This paper describes a study of the reflection high energy electron diffraction intensity change against temperature for GaAs and InAs surfaces. The reflection high energy electron diffraction intensity variation against temperature shows different hysteretic characters for the two materials. To date, the explanations for these phenomena were also different for the two substances. Here, we put forward an explanation for these hysteretic phenomena in general terms, applicable to both materials by using the hyperbolic model of hysteresis for coupled systems. Experimental results presented in the paper are in good agreement with the model predictions, supporting the proposed common explanation.

  5. INDIRECT INTELLIGENT SLIDING MODE CONTROL OF A SHAPE MEMORY ALLOY ACTUATED FLEXIBLE BEAM USING HYSTERETIC RECURRENT NEURAL NETWORKS

    PubMed Central

    Hannen, Jennifer C.; Crews, John H.; Buckner, Gregory D.

    2012-01-01

    This paper introduces an indirect intelligent sliding mode controller (IISMC) for shape memory alloy (SMA) actuators, specifically a flexible beam deflected by a single offset SMA tendon. The controller manipulates applied voltage, which alters SMA tendon temperature to track reference bending angles. A hysteretic recurrent neural network (HRNN) captures the nonlinear, hysteretic relationship between SMA temperature and bending angle. The variable structure control strategy provides robustness to model uncertainties and parameter variations, while effectively compensating for system nonlinearities, achieving superior tracking compared to an optimized PI controller. PMID:22962538

  6. Modeling the nonlinear hysteretic response in DAE experiments of Berea sandstone: A case-study

    NASA Astrophysics Data System (ADS)

    Pecorari, Claudio

    2015-03-01

    Dynamic acousto-elasticity (DAE) allows probing the instantaneous state of a material while the latter slowly and periodically is changed by an external, dynamic source. In DAE investigations of geo-materials, hysteresis of the material's modulus defect displays intriguing features which have not yet been interpreted in terms of any specific mechanism occurring at atomic or mesoscale. Here, experimental results on dry Berea sandstone, which is the rock type best investigated by means of a DAE technique, are analyzed in terms of three rheological models providing simplified representations of mechanisms involving dislocations interacting with point defects which are distributed along the dislocations' core or glide planes, and microcracks with finite stiffness in compression. Constitutive relations linking macroscopic strain and stress are derived. From the latter, the modulus defect associated to each mechanism is recovered. These models are employed to construct a composite one which is capable of reproducing several of the main features observed in the experimental data. The limitations of the present approach and, possibly, of the current implementation of DAE are discussed.

  7. Modeling the nonlinear hysteretic response in DAE experiments of Berea sandstone: A case-study

    SciTech Connect

    Pecorari, Claudio

    2015-03-31

    Dynamic acousto-elasticity (DAE) allows probing the instantaneous state of a material while the latter slowly and periodically is changed by an external, dynamic source. In DAE investigations of geo-materials, hysteresis of the material's modulus defect displays intriguing features which have not yet been interpreted in terms of any specific mechanism occurring at atomic or mesoscale. Here, experimental results on dry Berea sandstone, which is the rock type best investigated by means of a DAE technique, are analyzed in terms of three rheological models providing simplified representations of mechanisms involving dislocations interacting with point defects which are distributed along the dislocations' core or glide planes, and microcracks with finite stiffness in compression. Constitutive relations linking macroscopic strain and stress are derived. From the latter, the modulus defect associated to each mechanism is recovered. These models are employed to construct a composite one which is capable of reproducing several of the main features observed in the experimental data. The limitations of the present approach and, possibly, of the current implementation of DAE are discussed.

  8. Analysis and modification of Volterra/Wiener neural networks for the adaptive identification of non-linear hysteretic dynamic systems

    NASA Astrophysics Data System (ADS)

    Pei, J.-S.; Smyth, A. W.; Kosmatopoulos, E. B.

    2004-08-01

    This study attempts to demystify a powerful neural network approach for modelling non-linear hysteretic systems and in turn to streamline its architecture to achieve better computational efficiency. The recently developed neural network modelling approach, the Volterra/Wiener neural network (VWNN), demonstrated its usefulness in identifying the restoring forces for hysteretic systems in an off-line or even in an adaptive (on-line) mode, however, the mechanism of how and why it works has not been thoroughly explored especially in terms of a physical interpretation. Artificial neural network are often treated as "black box" modelling tools, in contrast, here the authors carry out a detailed analysis in terms of problem formulation and network architecture to explore the inner workings of this neural network. Based on the understanding of the dynamics of hysteretic systems, some simplifications and modifications are made to the original VWNN in predicting accelerations of hysteretic systems under arbitrary force excitations. Through further examination of the algorithm related to the VWNN applications, the efficiency of the previously published approach is improved by reducing the number of the hidden nodes without affecting the modelling accuracy of the network. One training example is presented to illustrate the application of the VWNN; and another is provided to demonstrate that the VWNN is able to yield a unique set of weights when the values of the controlling design parameters are fixed. The practical issue of how to choose the values of these important parameters is discussed to aid engineering applications.

  9. Exploring the tip-sample interaction regimes in the presence of hysteretic forces in the tapping mode atomic force microscopy

    NASA Astrophysics Data System (ADS)

    Korayem, M. H.; Eghbal, M. M.; Ebrahimi, N.

    2011-07-01

    In this article, the tip-sample interaction regimes in the presence of hysteretic forces are investigated using atomic force microscopy in the tapping mode. For this purpose, two samples that cause the formation of hysteretic forces, namely, silicon (stiff sample) with an adsorbed water film and polyethylene (compliant sample), are used. Also, for deriving the equation of motion of the microcantilever, the continuous beam model is used, and for determining the contact forces, depending on the sample under investigation, the Derjaguin-Muller-Toporov and Johnson-Kendall-Roberts contact mechanics models are used. The results indicate that the hysteretic interaction forces generate high-periodic and irregular responses at certain tip-sample separation distances. In fact, at these distances, a family of steady-state attractors is found that can be observed in one branch on the minimum tip-sample separation curves and in two separate branches on the average force curves. The reason for this occurrence might be the alternate formation of a liquid column between the probe tip and the sample (in the presence of ambient moisture), and for the compliant sample, the reason might be the alternate formation of an adhesion neck. In this article, the role of hysteretic forces in producing the hysteresis of the amplitude-separation curves is also explored.

  10. Resonance magnetoelectric effect without a bias field in a piezoelectric langatate-hysteretic ferromagnet monolithic structure

    NASA Astrophysics Data System (ADS)

    Burdin, D. A.; Fetisov, L. Y.; Fetisov, Y. K.; Chashin, D. V.; Ekonomov, N. A.

    2014-09-01

    The frequency, field, temperature, and amplitude characteristics of the direct magnetoelectric effect are studied in a planar monolithic structure consisting of a piezoelectric langatate crystal and a layer of electrolytic nickel. A relation between the magnetic and magnetoelectric properties of the structure is demonstrated, which explains the effects observed in structures with hysteretic layers. At the planar acoustic resonance frequency of the structure (about 70 kHz), the effect amounting to 23 V/(Oe cm) in the absence of a bias field is discovered. In the temperature interval 150-400 K, the amount of the effect changes nearly twofold, the resonance frequency changes by about 1%, and the Q factor on cooling rises to about 8 × 103. The field sensitivity of the structure is on the order of 1 V/Oe, which makes it possible to detect magnetic fields with an amplitude down to ˜10-6 Oe.

  11. Ground state search, hysteretic behaviour, and reversal mechanism of skyrmionic textures in confined helimagnetic nanostructures.

    PubMed

    Beg, Marijan; Carey, Rebecca; Wang, Weiwei; Cortés-Ortuño, David; Vousden, Mark; Bisotti, Marc-Antonio; Albert, Maximilian; Chernyshenko, Dmitri; Hovorka, Ondrej; Stamps, Robert L; Fangohr, Hans

    2015-01-01

    Magnetic skyrmions have the potential to provide solutions for low-power, high-density data storage and processing. One of the major challenges in developing skyrmion-based devices is the skyrmions' magnetic stability in confined helimagnetic nanostructures. Through a systematic study of equilibrium states, using a full three-dimensional micromagnetic model including demagnetisation effects, we demonstrate that skyrmionic textures are the lowest energy states in helimagnetic thin film nanostructures at zero external magnetic field and in absence of magnetocrystalline anisotropy. We also report the regions of metastability for non-ground state equilibrium configurations. We show that bistable skyrmionic textures undergo hysteretic behaviour between two energetically equivalent skyrmionic states with different core orientation, even in absence of both magnetocrystalline and demagnetisation-based shape anisotropies, suggesting the existence of Dzyaloshinskii-Moriya-based shape anisotropy. Finally, we show that the skyrmionic texture core reversal dynamics is facilitated by the Bloch point occurrence and propagation. PMID:26601904

  12. Hysteretic DC electrowetting by field-induced nano-structurations on polystyrene films.

    PubMed

    Sawane, Yogesh B; Datar, Suwarna; Ogale, Satishchandra B; Banpurkar, Arun G

    2015-04-01

    Electrowetting (EW) offers executive wetting control of conductive liquids on several polymer surfaces. We report a peculiar electrowetting response for aqueous drops on a polystyrene (PS) dielectric surface in the presence of silicone oil. After the first direct current (DC) voltage cycle, the droplet failed to regain Young's angle, yielding contact angle hysteresis, which is close to a value found in ambient air. We conjecture that the hysteretic EW response appears from in situ surface modification using electric field induced water-ion contact with PS surface inducing nano-structuration by electro-hydrodynamic (EHD) instability. Atomic force microscopy confirms the formation of nano-structuration on the electrowetted surface. The effects of molecular weight, applied electric field, water conductivity and pH on nano-structuration are studied. Finally, the EW based nano-structuration on PS surface is used for the enhanced loading of aqueous dyes on hydrophobic surfaces. PMID:25690856

  13. Ground state search, hysteretic behaviour, and reversal mechanism of skyrmionic textures in confined helimagnetic nanostructures

    PubMed Central

    Beg, Marijan; Carey, Rebecca; Wang, Weiwei; Cortés-Ortuño, David; Vousden, Mark; Bisotti, Marc-Antonio; Albert, Maximilian; Chernyshenko, Dmitri; Hovorka, Ondrej; Stamps, Robert L.; Fangohr, Hans

    2015-01-01

    Magnetic skyrmions have the potential to provide solutions for low-power, high-density data storage and processing. One of the major challenges in developing skyrmion-based devices is the skyrmions’ magnetic stability in confined helimagnetic nanostructures. Through a systematic study of equilibrium states, using a full three-dimensional micromagnetic model including demagnetisation effects, we demonstrate that skyrmionic textures are the lowest energy states in helimagnetic thin film nanostructures at zero external magnetic field and in absence of magnetocrystalline anisotropy. We also report the regions of metastability for non-ground state equilibrium configurations. We show that bistable skyrmionic textures undergo hysteretic behaviour between two energetically equivalent skyrmionic states with different core orientation, even in absence of both magnetocrystalline and demagnetisation-based shape anisotropies, suggesting the existence of Dzyaloshinskii-Moriya-based shape anisotropy. Finally, we show that the skyrmionic texture core reversal dynamics is facilitated by the Bloch point occurrence and propagation. PMID:26601904

  14. Hysteretic Spin Crossover in Two-Dimensional (2D) Hofmann-Type Coordination Polymers.

    PubMed

    Liu, Wei; Wang, Lu; Su, Yu-Jun; Chen, Yan-Cong; Tucek, Jiri; Zboril, Radek; Ni, Zhao-Ping; Tong, Ming-Liang

    2015-09-01

    Three new two-dimensional (2D) Hofmann-type coordination polymers with general formula [Fe(3-NH2py)2M(CN)4] (3-NH2py = 3-aminopyridine, M = Ni (1), Pd (2), Pt (3)) have been synthesized. Magnetic susceptibility measurements show that they exhibited cooperative spin crossover (SCO) with remarkable hysteretic behaviors. Their hysteresis widths are 25, 37, and 30 K for 1-3, respectively. The single-crystal structure of 1 suggest that the pseudo-octahedral Fe sites are equatorially bridged by [M(CN)4](2-) to form 2D grids and axially coordinated by 3-NH2py ligands. The intermolecular interactions between layers (the offset face-to-face π···π interactions, hydrogen bonds, and weak N(amino)···Ni(II) contacts) together with the covalent bonds bridged by [M(CN)4](2-) units are responsible to the significant cooperativity. PMID:26258593

  15. Ground state search, hysteretic behaviour, and reversal mechanism of skyrmionic textures in confined helimagnetic nanostructures

    NASA Astrophysics Data System (ADS)

    Beg, Marijan; Carey, Rebecca; Wang, Weiwei; Cortés-Ortuño, David; Vousden, Mark; Bisotti, Marc-Antonio; Albert, Maximilian; Chernyshenko, Dmitri; Hovorka, Ondrej; Stamps, Robert L.; Fangohr, Hans

    2015-11-01

    Magnetic skyrmions have the potential to provide solutions for low-power, high-density data storage and processing. One of the major challenges in developing skyrmion-based devices is the skyrmions’ magnetic stability in confined helimagnetic nanostructures. Through a systematic study of equilibrium states, using a full three-dimensional micromagnetic model including demagnetisation effects, we demonstrate that skyrmionic textures are the lowest energy states in helimagnetic thin film nanostructures at zero external magnetic field and in absence of magnetocrystalline anisotropy. We also report the regions of metastability for non-ground state equilibrium configurations. We show that bistable skyrmionic textures undergo hysteretic behaviour between two energetically equivalent skyrmionic states with different core orientation, even in absence of both magnetocrystalline and demagnetisation-based shape anisotropies, suggesting the existence of Dzyaloshinskii-Moriya-based shape anisotropy. Finally, we show that the skyrmionic texture core reversal dynamics is facilitated by the Bloch point occurrence and propagation.

  16. Hybrid models of hysteresis for mixed hysteretic loops in heterogeneous magnetic materials

    NASA Astrophysics Data System (ADS)

    Dimian, M.; Andrei, P.; Grayson, M.

    2014-05-01

    The mixed hysteresis behavior of counter-clockwise and clockwise loops has recently attracted the attention of the magnetics community, due to several experimental findings in inhomogeneous and hetero-structure magnetic systems. Various hybrid models are proposed here to address this behavior based on the superposition of standard hysteresis models and their newly developed clockwise variants. A special attention is also devoted to Bouc-Wen model, a typical clockwise often used by applied mechanics community, and to its relevance for mixed hysteresis. These clockwise and hybrid models have been implemented in an open-access academic software and their performance is illustrated by examples of hysteretic loops, first order reversal curves and diagrams simulated in this framework.

  17. Hysteretic configurations in a rotating U-tube with capped ends

    NASA Astrophysics Data System (ADS)

    Weidman, P. D.

    2015-06-01

    The effect of air trapped above the liquid columns in a U-tube rotating about an axis offset from the axis of symmetry is investigated. This extends the work of Denardo, Barber, Folley and Wright (Am. J. Phys., 57, 1989) who investigated the same problem for an open-ended U-tube for which no air is trapped. They found that, owing to a combination of gravitational, centrifugal and constraint forces on the liquid, the position of the liquid-air interfaces can be hysteretic as the angular velocity is varied. The existence and strength of the hysteresis loop depends on the dimensionless offset parameter δ and the dimensionless initial liquid height γ . Associated with the hysteresis is an instability in which the liquid jumps from one equilibrium state to another, herein defined as configuration I and configuration II. With the ends of the U-tube capped, the stable liquid configurations depend on two additional parameters defined for a stationary U-tube: α , the initial ratio of trapped air to liquid volume in each U-tube column and β , the normalized pressure of air trapped above the liquid in each column. In this study β is taken at the constant value corresponding to atmospheric pressure and, based on a previous study, we adopt Boyle’s law for determining the expansion/compression of air in a rotating U-tube. A parametric study varying α shows that a critical value occurs marking the threshold between hysteretic and nonhysteretic states. A parametric study of the effect of δ is also presented.

  18. Dynamics of hysteretic resistive-SQUIDs: Catastrophe and confusion in the quest for the Kelvin

    NASA Astrophysics Data System (ADS)

    Thomasson, Susanne Lyn

    We have designed and constructed a primary thermometry system which is capable of operating at milliKelvin temperatures. Our system is composed of thin-film Superconducting QUantum Interference Devices (SQUIDs); the thermometer is a thin-film resistive-SQUID, whose signal is coupled to, and amplified by, a dc-SQUID on the same integrated circuit chip. The dc-SQUID is configured in a direct-readout flux-locked loop (FLL) which maintained a bandwidth in excess of 1 MHz with a white noise level less than 1.5 muphi√Hz over the temperature range of operation: from 4.2 K down to 1.4 K. The resistive-SQUID is composed of a Josephson junction shunted by a resistor and inductor in series, which when current-biased above the critical current is driven to oscillate at a frequency proportional to the voltage across the junction. Thermal voltage fluctuations in the junction shunt resistor, due to Johnson noise, give rise to a broadening of the central frequency peak. This device operates as a primary thermometer because all the parameters connecting the temperature with the frequency spectrum are derived from the frequency measurement itself. The resistive-SQUID was designed to operate in the hysteretic regime where the parameter betaL ≡ 2piLIc/phi 0 is greater than unity. We incorporated an integrated on-chip critical current (Ic) control line over the Josephson junction so that beta L could be changed in-situ. The central frequency and variance were measured over a range of temperatures. We observed that the central frequency as a function of bias current did not follow the simple resistively-shunted junction model. For a set frequency, we observed quasiperiodic noise peaks as a function of betaL, with a noise floor consistent with thermal noise. In addition, we measured an increase in noise with decreasing temperature. Numerical simulations of the hysteretic resistive-SQUID equation of motion enabled a more accurate understanding of the device behavior. These simulations

  19. Hysteretic magneto-transport of a High- Tc superconducting/ferromagnetic multilayer with tunable magnetic domain structure

    NASA Astrophysics Data System (ADS)

    Villegas, Javier E.; Visani, Cristina; Metaxas, Peter J.; Collaudin, Aurelie; Calvet, Baptiste; Bernard, Rozenn; Briatico, Javier; Deranlot, Cyrile; Bouzehouane, Karim

    2011-03-01

    The magneto-transport of a hybrid heterostructure combining a YBaCu O7 - δ thin film and a Co/Pt superlattice shows an unusual hysteretic behavior. Depending on the angle between the external applied field and the film plane, and on the magnetic history, either a increase or a decrease of the mixed-state resistance is observed. The combination of magneto-transport, magnetic force microscopy and anomalous Hall effect measurements allows us to correlate these effects to the magnetic domain structures in the Co/Pt superlattice. We unequivocally prove that the hysteretic magneto-transport is induced by the stray magnetic fields from tunable magnetic domain structures, which may induce vortices or produce vortex pinning, leading to the increase/decrease of the mixed-state resistance. Work supported by French ANR ``Superhybrids-II'' and RTRA ``Supraspin'' grants.

  20. Attenuation due to hysteretic damage in the free vibration of a beam

    SciTech Connect

    Mendelsohn, Daniel A.; Pecorari, Claudio

    2014-02-18

    We present an asymptotic analysis of nonlinear free vibration of a beam with a damage plane represented by nonlinear hysteretic bending and shear springs. The perturbation parameter is the product of the ratio of the nonlinear to linear parts of the stiffness times the amplitude of the free vibration. The loss of energy and ensuing attenuation due to hysteresis is accounted for by reducing the amplitude of vibration after each cycle by an amount such that the loss in total system energy equals the work done to traverse the hysteresis loop. A new Fourier representation for each cycle of the hysteresis and the deflection solution is used for this purpose and leads to higher harmonics, an evolving complex stiffness and corrected natural frequency that are linked to the attenuation. The frequency increases to its linear value from an initially reduced value. The damage parameter, frequency shift and fundamental amplitudes are presented as functions of the initial damage parameter and time (cycles of vibration). The amplitudes of several of the higher harmonics are also presented as functions of time. Many of the results exhibit sufficient sensitivity with respect to the damage parameter that they should be able to be used to characterize the damage.

  1. Synthesis of nanorod-FeP@C composites with hysteretic lithiation in lithium-ion batteries.

    PubMed

    Jiang, Jun; Wang, Chunde; Liang, Jianwen; Zuo, Jian; Yang, Qing

    2015-06-14

    Nanorod-FeP@C composites are synthesized via a one-pot solution reaction of ferrocene (Fe(C5H5)2) with excess triphenylphosphine (PPh3) in sealed vacuum tubes at 390 °C, in which PPh3 is used as both the phosphorus source and solvent in the reaction. The structure and lithium storage performance of the as-prepared nanorod-FeP@C composites are intensively characterized, and it is interesting that the composites exhibit an increased capacity during cycling serving as anode materials for lithium-ion batteries (LIBs). Meanwhile, mechanism investigations reveal that the capacity increase of the composites results from a hysteretic lithiation of the nanostructured FeP phase due to the coating of the carbon shell in the composites. Meanwhile, cyclic stability investigation shows that the composites have a very good cyclic stability that shows potential for the composites with a long lifespan as a promising kind of anode material. PMID:25966368

  2. Impact of Capacitive Effect and Ion Migration on the Hysteretic Behavior of Perovskite Solar Cells.

    PubMed

    Chen, Bo; Yang, Mengjin; Zheng, Xiaojia; Wu, Congcong; Li, Wenle; Yan, Yongke; Bisquert, Juan; Garcia-Belmonte, Germà; Zhu, Kai; Priya, Shashank

    2015-12-01

    In the past five years, perovskite solar cells (PSCs) based on organometal halide perovskite have exhibited extraordinary photovoltaic (PV) performance. However, the PV measurements of PSCs have been widely recognized to depend on voltage scanning condition (hysteretic current density-voltage [J-V] behavior), as well as on voltage treatment history. In this study, we find that varied PSC responses are attributable to two causes. First, capacitive effect associated with electrode polarization provides a slow transient non-steady-state photocurrent that modifies the J-V response. Second, modification of interfacial barriers induced by ion migration can modulate charge-collection efficiency so that it causes a pseudo-steady-state photocurrent, which changes according to previous voltage conditioning. Both phenomena are strongly influenced by ions accumulating at outer interfaces, but their electrical and PV effects are different. The time scale for decay of capacitive current is on the order of seconds, whereas the slow redistribution of mobile ions requires several minutes. PMID:26550850

  3. Scale-dependent coupling of hysteretic capillary pressure, trapping, and fluid mobilities

    NASA Astrophysics Data System (ADS)

    Doster, F.; Celia, M. A.; Nordbotten, J. M.

    2012-12-01

    Many applications of multiphase flow in porous media, including CO2-storage and enhanced oil recovery, require mathematical models that span a large range of length scales. In the context of numerical simulations, practical grid sizes are often on the order of tens of meters, thereby de facto defining a coarse model scale. Under particular conditions, it is possible to approximate the sub-grid-scale distribution of the fluid saturation within a grid cell; that reconstructed saturation can then be used to compute effective properties at the coarse scale. If both the density difference between the fluids and the vertical extend of the grid cell are large, and buoyant segregation within the cell on a sufficiently shorte time scale, then the phase pressure distributions are essentially hydrostatic and the saturation profile can be reconstructed from the inferred capillary pressures. However, the saturation reconstruction may not be unique because the parameters and parameter functions of classical formulations of two-phase flow in porous media - the relative permeability functions, the capillary pressure -saturation relationship, and the residual saturations - show path dependence, i.e. their values depend not only on the state variables but also on their drainage and imbibition histories. In this study we focus on capillary pressure hysteresis and trapping and show that the contribution of hysteresis to effective quantities is dependent on the vertical length scale. By studying the transition from the two extreme cases - the homogeneous saturation distribution for small vertical extents and the completely segregated distribution for large extents - we identify how hysteretic capillary pressure at the local scale induces hysteresis in all coarse-scale quantities for medium vertical extents and finally vanishes for large vertical extents. Our results allow for more accurate vertically integrated modeling while improving our understanding of the coupling of capillary

  4. Fast product formation and slow product release are important features in a hysteretic reaction mechanism of glutathione transferase T2-2.

    PubMed

    Jemth, P; Mannervik, B

    1999-08-01

    The reaction mechanism of rat glutathione transferase T2-2 has been studied using pre-steady-state and steady-state kinetics. Several parts of the catalytic cycle including binding of substrates, product formation, and product release were investigated. Under saturating conditions, a two-step product release was found to be rate limiting in the enzyme-catalyzed reactions between the nucleophilic substrate glutathione and either of the two electrophilic substrates 1-menaphthyl sulfate and 4-nitrobenzyl chloride. The rate constant for pre-steady-state product formation on rat glutathione transferase T2-2 has an observed pK(a) value of 5.7 apparently due to ionization of the sulfhydryl group of glutathione. This rate constant is approximately 2 orders of magnitude higher than k(cat) at pH values of >6. It can be predicted from the pH dependence that product formation would be the sole rate-limiting step at pH values of <3. A hysteretic mechanism of rGST T2-2 is proposed based on a slow conformational transition detected in pre-steady-state displacement experiments. PMID:10433705

  5. Interactions Between Mineral Surfaces, Substrates, Enzymes, and Microbes Result in Hysteretic Temperature Sensitivities and Microbial Carbon Use Efficiencies and Weaker Predicted Carbon-Climate Feedbacks

    NASA Astrophysics Data System (ADS)

    Riley, W. J.; Tang, J.

    2014-12-01

    We hypothesize that the large observed variability in decomposition temperature sensitivity and carbon use efficiency arises from interactions between temperature, microbial biogeochemistry, and mineral surface sorptive reactions. To test this hypothesis, we developed a numerical model that integrates the Dynamic Energy Budget concept for microbial physiology, microbial trait-based community structure and competition, process-specific thermodynamically ­­based temperature sensitivity, a non-linear mineral sorption isotherm, and enzyme dynamics. We show, because mineral surfaces interact with substrates, enzymes, and microbes, both temperature sensitivity and microbial carbon use efficiency are hysteretic and highly variable. Further, by mimicking the traditional approach to interpreting soil incubation observations, we demonstrate that the conventional labile and recalcitrant substrate characterization for temperature sensitivity is flawed. In a 4 K temperature perturbation experiment, our fully dynamic model predicted more variable but weaker carbon-climate feedbacks than did the static temperature sensitivity and carbon use efficiency model when forced with yearly, daily, and hourly variable temperatures. These results imply that current earth system models likely over-estimate the response of soil carbon stocks to global warming.

  6. Hyperfine-induced hysteretic funnel structure in spin blockaded tunneling current of coupled vertical quantum dots at low magnetic field

    SciTech Connect

    Leary, A.; Wicha, A.; Harack, B.; Coish, W. A.; Hilke, M.; Yu, G.; Gupta, J. A.; Payette, C.; Austing, D. G.

    2013-12-04

    We outline the properties of the hyperfine-induced funnel structure observed in the two-electron spin blockade region of a weakly coupled vertical double quantum dot device. Hysteretic steps in the leakage current occur due to dynamic nuclear polarization when either the bias voltage or the magnetic field is swept up and down. When the bias voltage is swept, an intriguing ∼3 mT wide cusp near 0 T appears in the down-sweep position, and when the magnetic field is swept, the current at 0 T can be switched from 'low' to 'high' as the bias is increased.

  7. Ceramic problems/challenges in high temperature oxide superconductors - Hysteretic force measurements as a new analysis tool

    NASA Technical Reports Server (NTRS)

    Morgan, P. E. D.; Ratto, J. J.; Housley, R. M.; Porter, J. R.; Marshall, D. B.

    1989-01-01

    A technique is presented for analyzing high-temperature oxide superconductors using hysteretic magnetic force/distance measurements. Emphasis is placed on developing low weight, highly robust superconducting materials for space applications. Bi-Ca-Sr-Cu superconductors are prepared and characterized by standard techniques. It is found that standard techniques such as XRD, SEM, and TEM are insufficient to completely characterize superconductors. The magnetic properties of the superconductors are studied with the new technique, based on measuring the force between a magnet and the superconductor as a function of their separation.

  8. Hyperfine-induced hysteretic funnel structure in spin blockaded tunneling current of coupled vertical quantum dots at low magnetic field

    NASA Astrophysics Data System (ADS)

    Leary, A.; Wicha, A.; Harack, B.; Coish, W. A.; Hilke, M.; Yu, G.; Payette, C.; Gupta, J. A.; Austing, D. G.

    2013-12-01

    We outline the properties of the hyperfine-induced funnel structure observed in the two-electron spin blockade region of a weakly coupled vertical double quantum dot device. Hysteretic steps in the leakage current occur due to dynamic nuclear polarization when either the bias voltage or the magnetic field is swept up and down. When the bias voltage is swept, an intriguing ˜3 mT wide cusp near 0 T appears in the down-sweep position, and when the magnetic field is swept, the current at 0 T can be switched from "low" to "high" as the bias is increased.

  9. Finite-element simulations of hysteretic alternating current losses in a magnetically coated superconducting tubular wire subject to an oscillating transverse magnetic field

    NASA Astrophysics Data System (ADS)

    Genenko, Y. A.; Rauh, H.; Kurdi, S.

    2015-06-01

    Numerical simulations of hysteretic ac losses in a tubular superconductor/paramagnet heterostructure subject to an oscillating transverse magnetic field are performed within the quasistatic approach, calling upon the COMSOL finite-element software package and exploiting magnetostatic-electrostatic analogues. It is shown that one-sided magnetic shielding of a thin, type-II superconducting tube by a coaxial paramagnetic support results in a slight increase of hysteretic ac losses as compared to those for a vacuum environment, when the support is placed inside; a spectacular shielding effect with a possible reduction of hysteretic ac losses by orders of magnitude, however, ensues, depending on the magnetic permeability and the amplitude of the applied magnetic field, when the support is placed outside.

  10. Numerical Calculation of Anelastic Seismic Pulse Propagation in a Hysteretic Elastic Material Along a Horizontal Surface Boundary of the Earth

    NASA Astrophysics Data System (ADS)

    Kosik, Dan

    2009-11-01

    The stress-strain relation for materials such as soil and sand exhibit hysteretic elastic behavior and are modeled using the Preisach-Mayergoyz method for a numerical calculation of a propagating seismic pulse. The source pulse is taken to be the result of pressure applied to the inner surface of a cylindrical cavity in order to simulate a two dimensional dynamite source. The anelastic differential equation of motion that is solved does not include traditional nonlinear elasticity terms appropriate to materials with atomic elasticity, but contains the dominant anelastic terms appropriate to consolidated materials that exhibit hysteretic elastic behavior. For parameters characteristic of sand at the Earth's surface, a comparison of anelastic to linear seismic pulse propagation gives an anelastic pulse with much slower propagation speed than a corresponding linear pulse with evidence of dispersion in the pulse. The simulated ground roll that results shows dramatic differences between the anelastic and linear cases. These results have important implications for the detailed behavior of strong seismic waves moving in soft sediments. Their dominant frequencies, amplitudes, and methods by which they may be attenuated will depend on getting the detailed pulse structure and its propagation correct.

  11. Hysteretic nonlinear elasticity of Berea sandstone at low-vibrational strain revealed by dynamic acousto-elastic testing

    NASA Astrophysics Data System (ADS)

    Renaud, G.; RivièRe, J.; Le Bas, P.-Y.; Johnson, P. A.

    2013-02-01

    Abstract Through changes in wave speed of ultrasonic pulses traversing the sample, we measure variations in the elasticity of dry Berea sandstone as a function of the applied low-frequency (LF) axial strain (varied from 10-7 to 10-5). The approach, termed dynamic acousto-elasticity, is the dynamic analog of static acousto-elasticity where the wave speed is measured as a function of the applied static load. Dynamic acousto-elasticity uses low-frequency vibrational loading of smaller strain amplitude, typically below 10-4, and it includes inertial effects. At strain amplitudes around 10-6, compression and tension produce a material softening of the material. In contrast, a quasi-static compression inducing a strain between 10-4 and 10-3 leads to a material stiffening. At 10-5 strain amplitude, elaborate <span class="hlt">hysteretic</span> signatures of modulus strain are observed. The measurements provide the first direct experimental evidence of <span class="hlt">hysteretic</span> nonlinear (wave amplitude dependent) elasticity in a sandstone at low dynamic strains.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3916563','PMC'); return false;" href="http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3916563"><span id="translatedtitle">Evidence for <span class="hlt">Hysteretic</span> Substrate Channeling in the Proline Dehydrogenase and Δ1-Pyrroline-5-carboxylate Dehydrogenase Coupled Reaction of Proline Utilization A (PutA)*</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Moxley, Michael A.; Sanyal, Nikhilesh; Krishnan, Navasona; Tanner, John J.; Becker, Donald F.</p> <p>2014-01-01</p> <p>PutA (proline utilization A) is a large bifunctional flavoenzyme with proline dehydrogenase (PRODH) and Δ1-pyrroline-5-carboxylate dehydrogenase (P5CDH) domains that catalyze the oxidation of l-proline to l-glutamate in two successive reactions. In the PRODH active site, proline undergoes a two-electron oxidation to Δ1-pyrroline-5-carboxlylate, and the FAD cofactor is reduced. In the P5CDH active site, l-glutamate-γ-semialdehyde (the hydrolyzed form of Δ1-pyrroline-5-carboxylate) undergoes a two-electron oxidation in which a hydride is transferred to NAD+-producing NADH and glutamate. Here we report the first kinetic model for the overall PRODH-P5CDH reaction of a PutA enzyme. Global analysis of steady-state and transient kinetic data for the PRODH, P5CDH, and coupled PRODH-P5CDH reactions was used to test various models describing the conversion of proline to glutamate by Escherichia coli PutA. The coupled PRODH-P5CDH activity of PutA is best described by a mechanism in which the intermediate is not released into the bulk medium, i.e., substrate channeling. Unexpectedly, single-turnover kinetic <span class="hlt">experiments</span> of the coupled PRODH-P5CDH reaction revealed that the rate of NADH formation is 20-fold slower than the steady-state turnover number for the overall reaction, implying that catalytic cycling speeds up throughput. We show that the limiting rate constant observed for NADH formation in the first turnover increases by almost 40-fold after multiple turnovers, achieving half of the steady-state value after 15 turnovers. These results suggest that EcPutA achieves an activated channeling state during the approach to steady state and is thus a new example of a <span class="hlt">hysteretic</span> enzyme. Potential underlying causes of activation of channeling are discussed. PMID:24352662</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/752074','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/752074"><span id="translatedtitle">On the continuum-scale simulation of gravity-driven fingers with <span class="hlt">hysteretic</span> Richards equation: Trucation error induced numerical artifacts</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>ELIASSI,MEHDI; GLASS JR.,ROBERT J.</p> <p>2000-03-08</p> <p>The authors consider the ability of the numerical solution of Richards equation to model gravity-driven fingers. Although gravity-driven fingers can be easily simulated using a partial downwind averaging method, they find the fingers are purely artificial, generated by the combined effects of truncation error induced oscillations and capillary hysteresis. Since Richards equation can only yield a monotonic solution for standard constitutive relations and constant flux boundary conditions, it is not the valid governing equation to model gravity-driven fingers, and therefore is also suspect for unsaturated flow in initially dry, highly nonlinear, and <span class="hlt">hysteretic</span> media where these fingers occur. However, analysis of truncation error at the wetting front for the partial downwind method suggests the required mathematical behavior of a more comprehensive and physically based modeling approach for this region of parameter space.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012PMag...92.3680D','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012PMag...92.3680D"><span id="translatedtitle">Hygromorphic behaviour of cellular material: <span class="hlt">hysteretic</span> swelling and shrinkage of wood probed by phase contrast X-ray tomography</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Derome, Dominique; Rafsanjani, Ahmad; Patera, Alessandra; Guyer, Robert; Carmeliet, Jan</p> <p>2012-10-01</p> <p>Wood is a hygromorphic material, meaning it responds to changes in environmental humidity by changing its geometry. Its cellular biological structure swells during wetting and shrinks during drying. The origin of the moisture-induced deformation lies at the sub-cellular scale. The cell wall can be considered a composite material with stiff cellulose fibrils acting as reinforcement embedded in a hemicellulose/lignin matrix. The bulk of the cellulose fibrils, forming 50% of the cell wall, are oriented longitudinally, forming long-pitched helices. Both components of cell wall matrix are displaying swelling. Moisture sorption and, to a lesser degree, swelling/shrinkage are known to be <span class="hlt">hysteretic</span>. We quantify the affine strains during the swelling and shrinkage using high resolution images obtained by phase contrast synchrotron X-ray tomography of wood samples of different porosities. The reversibility of the swelling/shrinkage is found for samples with controlled moisture sorption history. The deformation is more <span class="hlt">hysteretic</span> for high than for low density samples. Swelling/shrinkage due to ad/desorption of water vapour displays also a non-affine component. The reversibility of the swelling/shrinkage indicates that the material has a structural capacity to show a persistent cellular geometry for a given moisture state and a structural composition that allows for moisture-induced transitional states. A collection of qualitative observations of small subsets of cells during swelling/shrinkage is further studied by simulating the observed behaviour. An anisotropic swelling coefficient of the cell wall is found to emerge and its origin is linked to the anisotropy of the cellulose fibrils arrangement in cell wall layers.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/21246951','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/21246951"><span id="translatedtitle">Mechanism of the <span class="hlt">hysteretic</span> behavior of the magnetoresistance of granular HTSCs: The universal nature of the width of the magnetoresistance hysteresis loop</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Balaev, D. A. Dubrovskii, A. A.; Shaikhutdinov, K. A.; Popkov, S. I.; Gokhfeld, D. M.; Gokhfeld, Yu. S.; Petrov, M. I.</p> <p>2009-02-15</p> <p>The <span class="hlt">hysteretic</span> behavior of the magnetoresistance R(H) of granular high-temperature superconductors (HTSCs) of the Y-Ba-Cu-O, Bi-Ca-Sr-Cu-O, and La-Sr-Cu-O classical systems is investigated for transport current densities lower and higher than the critical density (at H = 0). All systems exhibit universal behavior of the width of the magnetoresistance hysteresis loop: independence of transport current under identical external conditions. This means that flux trapping in HTSC grains is the main mechanism controlling the <span class="hlt">hysteretic</span> behavior of the magnetoresistance of granular HTSCs, while pinning of Josephson vortices in the intragranular medium makes no appreciable contribution to the formation of magnetoresistance hysteresis (when transport current flows through the sample). Experimental data on relaxation of residual resistance after the action of a magnetic field also confirm this conclusion.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/328266','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/328266"><span id="translatedtitle">A micromechanical modelling of the <span class="hlt">hysteretic</span> behavior in thermally induced martensitic phase transitions: Application to Cu-Zn-Al shape memory alloys</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Agouram, S.; Bensalah, M.O.; Ghazali, A.</p> <p>1998-12-11</p> <p>The <span class="hlt">hysteretic</span> behavior of Cu-Zn-Al shape memory alloys (SMAs) in thermally induced martensitic phase transition is dealt with. The problem is studied by means of a kinematic analysis where the internal variables describing the material`s microstructure are regarded as implicit functions of the applied thermomechanical loading parameters ({Sigma}{sub ij}, {Tau}). On the other hand, a thermodynamic approach is used in which the local balance formalism is based on the thermoelastic equilibrium concept. Considering that thermoelastic equilibrium temperatures between phases, in the forward and reverse transformation, are dependent on the location in the transformation path enables the <span class="hlt">hysteretic</span> behavior to be determined. Hence, a set of non-linear equations is deduced simulating the complete and partial cycles. Results obtained in this way, in the thermally induced phase transition with no applied stress, are in good agreement with experimental observations performed on Cu-based SMAs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015MSSP...60...90G','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015MSSP...60...90G"><span id="translatedtitle">Piezoelectric sensing and non-parametric statistical signal processing for health monitoring of <span class="hlt">hysteretic</span> dampers used in seismic-resistant structures</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Gallego, A.; Benavent-Climent, A.; Romo-Melo, L.</p> <p>2015-08-01</p> <p>The paper proposes a new application of non-parametric statistical processing of signals recorded from vibration tests for damage detection and evaluation on I-section steel segments. The steel segments investigated constitute the energy dissipating part of a new type of <span class="hlt">hysteretic</span> damper that is used for passive control of buildings and civil engineering structures subjected to earthquake-type dynamic loadings. Two I-section steel segments with different levels of damage were instrumented with piezoceramic sensors and subjected to controlled white noise random vibrations. The signals recorded during the tests were processed using two non-parametric methods (the power spectral density method and the frequency response function method) that had never previously been applied to <span class="hlt">hysteretic</span> dampers. The appropriateness of these methods for quantifying the level of damage on the I-shape steel segments is validated experimentally. Based on the results of the random vibrations, the paper proposes a new index that predicts the level of damage and the proximity of failure of the <span class="hlt">hysteretic</span> damper.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2008AIPC.1020.1195G','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2008AIPC.1020.1195G"><span id="translatedtitle">Investigation of Deterioration Behavior of <span class="hlt">Hysteretic</span> Loops in Nonlinear Static Procedure Analysis of Concrete Structures with Shear Walls</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Ghodrati Amiri, G.; Amidi, S.; Khorasani, M.</p> <p>2008-07-01</p> <p>In the recent years, scientists developed the seismic rehabilitation of structures and their view points were changed from sufficient strength to the performance of structures (Performance Base Design) to prepare a safe design. Nonlinear Static Procedure analysis (NSP) or pushover analysis is a new method that is chosen for its speed and simplicity in calculations. "Seismic Rehabilitation Code for Existing Buildings" and FEMA 356 considered this method. Result of this analysis is a target displacement that is the base of the performance and rehabilitation procedure of the structures. Exact recognition of that displacement could develop the workability of pushover analysis. In these days, Nonlinear Dynamic Analysis (NDP) is only method can exactly apply the seismic ground motions. In this case because it consumes time, costs very high and is more difficult than other methods, is not applicable as much as NSP. A coefficient used in NSP for determining the target displacement is C2 (Stiffness and Strength Degradations Coefficient) and is applicable for correcting the errors due to eliminating the stiffness and strength degradations in <span class="hlt">hysteretic</span> loops. In this study it has been tried to analysis three concrete frames with shear walls by several accelerations that scaled according to FEMA 273 and FEMA 356. These structures were designed with Iranian 2800 standard (vers.3). Finally after the analyzing by pushover method and comparison results with dynamic analysis, calculated C2 was comprised with values in rehabilitation codes.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/21148888','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/21148888"><span id="translatedtitle">Investigation of Deterioration Behavior of <span class="hlt">Hysteretic</span> Loops in Nonlinear Static Procedure Analysis of Concrete Structures with Shear Walls</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Ghodrati Amiri, G.; Amidi, S.; Khorasani, M.</p> <p>2008-07-08</p> <p>In the recent years, scientists developed the seismic rehabilitation of structures and their view points were changed from sufficient strength to the performance of structures (Performance Base Design) to prepare a safe design. Nonlinear Static Procedure analysis (NSP) or pushover analysis is a new method that is chosen for its speed and simplicity in calculations. 'Seismic Rehabilitation Code for Existing Buildings' and FEMA 356 considered this method. Result of this analysis is a target displacement that is the base of the performance and rehabilitation procedure of the structures. Exact recognition of that displacement could develop the workability of pushover analysis. In these days, Nonlinear Dynamic Analysis (NDP) is only method can exactly apply the seismic ground motions. In this case because it consumes time, costs very high and is more difficult than other methods, is not applicable as much as NSP. A coefficient used in NSP for determining the target displacement is C2 (Stiffness and Strength Degradations Coefficient) and is applicable for correcting the errors due to eliminating the stiffness and strength degradations in <span class="hlt">hysteretic</span> loops. In this study it has been tried to analysis three concrete frames with shear walls by several accelerations that scaled according to FEMA 273 and FEMA 356. These structures were designed with Iranian 2800 standard (vers.3). Finally after the analyzing by pushover method and comparison results with dynamic analysis, calculated C2 was comprised with values in rehabilitation codes.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007APS..MARB41012B&link_type=ABSTRACT','NASAADS'); return false;" href="http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007APS..MARB41012B&link_type=ABSTRACT"><span id="translatedtitle"><span class="hlt">Hysteretic</span> melting and freezing of nanoscale indium islands using local thermal cycling for phase-change memory nodes</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Brintlinger, Todd; Hussain Baloch, Kamal; Qi, Yi; Cullen, William G.; Goldhaber-Gordon, David; Cumings, John</p> <p>2007-03-01</p> <p>Using a transmission electron microscope (TEM) operating in dark-field mode, the melting and freezing transition in nanoscale (approximately 20-200nm diameter) metal islands can be imaged at video rates (33ms/frame). The metal, typically indium, islands are thermally evaporated on one side of a 100nm thick SiN membrane. Local thermal gradients produced by Joule heating of lithographically defined electrodes on the opposite side of the membrane show a <span class="hlt">hysteretic</span> effect in the melting/freezing of the metal islands. Read and write cycles are accomplished with 5-10 microW power, while a quiescent power of 80-100 microW is required to keep an island near its melting point. The hysteresis indicates a finite nucleation energy during freezing of individual islands. While TEM is not a practical readout mechanism, the behavior suggests a type of phase-change memory node on an inherently nanometer scale. Results for all the aforementioned will be shown, including micrographs, video, and related discussion.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_3");'>3</a></li> <li><a href="#" onclick='return showDiv("page_4");'>4</a></li> <li class="active"><span>5</span></li> <li><a href="#" onclick='return showDiv("page_6");'>6</a></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_5 --> <div id="page_6" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_4");'>4</a></li> <li><a href="#" onclick='return showDiv("page_5");'>5</a></li> <li class="active"><span>6</span></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="101"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/25843420','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/25843420"><span id="translatedtitle">Kinetic and <span class="hlt">hysteretic</span> behavior of ATP hydrolysis of the highly stable dimeric ATP synthase of Polytomella sp.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Villavicencio-Queijeiro, Alexa; Pardo, Juan Pablo; González-Halphen, Diego</p> <p>2015-06-01</p> <p>The F1FO-ATP synthase of the colorless alga Polytomella sp. exhibits a robust peripheral arm constituted by nine atypical subunits only present in chlorophycean algae. The isolated dimeric enzyme exhibits a latent ATP hydrolytic activity which can be activated by some detergents. To date, the kinetic behavior of the algal ATPase has not been studied. Here we show that while the soluble F1 sector exhibits Michaelis-Menten kinetics, the dimer exhibits a more complex behavior. The kinetic parameters (Vmax and Km) were obtained for both the F1 sector and the dimeric enzyme as isolated or activated by detergent, and this activation was also seen on the enzyme reconstituted in liposomes. Unlike other ATP synthases, the algal dimer hydrolyzes ATP on a wide range of pH and temperature. The enzyme was inhibited by oligomycin, DCCD and Mg-ADP, although oligomycin induced a peculiar inhibition pattern that can be attributed to structural differences in the algal subunit-c. The hydrolytic activity was temperature-dependent and exhibited activation energy of 4 kcal/mol. The enzyme also exhibited a <span class="hlt">hysteretic</span> behavior with a lag phase strongly dependent on temperature but not on pH, that may be related to a possible regulatory role in vivo. PMID:25843420</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/26979270','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/26979270"><span id="translatedtitle"><span class="hlt">Hysteretic</span> memory in pH-response of water contact angle on poly(acrylic acid) brushes.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Yadav, Vivek; Harkin, Adrienne V; Robertson, Megan L; Conrad, Jacinta C</p> <p>2016-04-13</p> <p>We investigated the pH-dependent response of flat polyacid brushes of varying length and dispersity in the extended brush regime. Our model system consisted of poly(acrylic acid) brushes, which change from hydrophobic and neutral at low pH to hydrophilic and negatively charged at high pH, synthesized on silicon substrates using a grafting-from approach at constant grafting density. We observed three trends in the pH-response: first, the dry brush thickness increased as the pH was increased for brushes above a critical length, and this effect was magnified as the dispersity increased; second, the water contact angle measured at low pH was larger for brushes of greater dispersity; and third, brushes of sufficient dispersity exhibited <span class="hlt">hysteretic</span> memory behavior in the pH-dependence of the contact angle, in which the contact angle upon increasing and decreasing pH differed. As a consequence, the pKa of the brushes measured upon increasing pH was consistently higher than that measured upon decreasing pH. The observed pH response is consistent with proposed changes in the conformation and charge distribution of the polyelectrolyte brushes that depend on the direction of pH change and the dispersity of the brushes. PMID:26979270</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016PMM...117..529K','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016PMM...117..529K"><span id="translatedtitle">The formation of <span class="hlt">hysteretic</span> magnetic properties in amorphous alloys of various classes upon thermomagmetic treatment in a transverse magnetic field</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Kekalo, I. B.; Mogil'nikov, P. S.</p> <p>2016-06-01</p> <p>In this paper, we have studied the effects of the thermomagnetic treatment in a transverse magnetic field (TMaT⊥) on the permeability of the amorphous alloy Co69Fe3.7Cr3.8Si12.5B11 with such a low saturation magnetostriction ( λ s 10-7) that, in the ribbons of this alloy rolled into a toroid, a sharp longitudinal magnetic texture is observed ( K sq > 0.90). It has been revealed that the permeability μ4 ( H = 4 mOe, f = 1 kHz) as a function of the annealing temperature or time of holding at a temperature is described by a curve with a maximum. This maximum is observed at a coefficient of the squareness of the hysteresis loop K sq,m in the range of 0.2 ≤ K sq,m ≤ 0.4. The regimes of the TMaT have been determined that provide optimum values of the permeability μ4 (15000) without a loss of the ductile state of the ribbons of this alloy. Based on the example of an iron-based alloy of composition Fe57Co31Si2.9B9.1 with λs = 35 × 10-6, it has been shown that the formation of the <span class="hlt">hysteretic</span> magnetic properties upon the TMaT⊥ depends substantially on the magnitude of the magnetostriction and the Curie temperature of the amorphous alloys.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1988JSV...127..331N','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1988JSV...127..331N"><span id="translatedtitle">An Itô-based general approximation method for random vibration of <span class="hlt">hysteretic</span> systems, part I: Gaussian analysis</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Noori, M.; Davoodi, H.; Saffar, A.</p> <p>1988-12-01</p> <p>The cumulant-neglect closure scheme independently developed by Ibrahim and Lin is extended for determining the stationary and non-stationary response of non-linear systems with hysteric restoring force characteristics. The method is applied to the analysis of a hysteresis and model with strength and/or stiffness degradation capabilities. This model has been studied in the past by Baber and Wen for the analysis of hysterically degrading systems using equivalent linearization. The same model has also been used for stochastic seismic performance evaluation of reinforced concrete buildings. Response statistics obtained for the model by using this closure scheme are compared with results of equivalent linearization via Monte Carlo simulation. The study performed, for a wide range of degradation parameters and input power spectral density levels, shows that the Gaussian responses obtained by this approach are identical with the linearized results. This general approximation technique, however, can provide information on higher order statistics for <span class="hlt">hysteretic</span> systems. These non-Gaussian statistics have not been made available so far by the existing approximation techniques. In this paper the Gaussian statistics are presented.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010EGUGA..12.3455M&link_type=ABSTRACT','NASAADS'); return false;" href="http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010EGUGA..12.3455M&link_type=ABSTRACT"><span id="translatedtitle">Evolution of water repellency of organic growing media used in Horticulture and consequences on <span class="hlt">hysteretic</span> behaviours of the water retention curve</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Michel, Jean-Charles; Qi, Guifang; Charpentier, Sylvain; Boivin, Pascal</p> <p>2010-05-01</p> <p>Most of growing media used in horticulture (particularly peat substrates) shows hysteresis phenomena during desiccation and rehydration cycles, which greatly affects their hydraulic properties. The origins of these properties have often been related to one or several of the specific mechanisms such as the non-geometrical uniformity of the pores (also called ‘ink bottle' effect), presence of trapped air, shrinkage-swelling phenomena, and changes in water repellency. However, recent results showed that changes in wettability during desiccation and rehydration could be considered as one of the main factors leading to <span class="hlt">hysteretic</span> behaviour in these materials with high organic matter contents (Naasz et al., 2008). The general objective was to estimate the evolutions of changes in water repellency on the water retention properties and associated hysteresis phenomena in relation to the intensity and the number of drying/wetting cycles. For this, simultaneous shrinkage/swelling and water retention curves were obtained using method previously developed for soil shrinkage analysis by Boivin (2006) that we have adapted for growing media and to their physical behaviours during rewetting. The <span class="hlt">experiment</span> was performed in a climatic chamber at 20°C. A cylinder with the growing medium tested was placed on a porous ceramic disk which is used to control the pressure and to full/empty water of the sample. The whole of the device was then placed on a balance to record the water loss/storage with time; whereas linear displacement transducers were used to measure the changes in sample height and diameter upon drying and wetting in the axial and radial directions. Ceramic cups (2 cm long and 0.21 cm diameter) connected to pressure transducers were inserted in the middle of the samples to record the water pressure head. In parallell, contact angles were measured by direct droplet method at different steps during the drying/rewetting cycles. First results obtained on weakly decomposed</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2002PhRvB..66b4516Q','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2002PhRvB..66b4516Q"><span id="translatedtitle">Calculation of the <span class="hlt">hysteretic</span> force between a superconductor and a magnet</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Qin, M. J.; Li, G.; Liu, H. K.; Dou, S. X.; Brandt, E. H.</p> <p>2002-07-01</p> <p>The magnetic levitation forces exerted on a high-temperature superconducting (HTS) disk by a cylindrical permanent magnet (PM) are calculated from first principles for superconductors with finite thickness. The current j(ρ,z) and field B(ρ,z) profiles in the HTS in the nonuniform magnetic field generated by the PM are derived. The levitation force depends nonlinearly on the critical current density jc and on the thickness of the HTS. The flux creep is described by a current-voltage law E(j)=Ec(j/jc)n, from which we show that the levitation force depends on the speed at which the PM approaches or recedes from the HTS, which accounts for the experimentally observed force creep phenomenon. The stiffness of the system is derived by calculating minor force loops. The numerical results reproduce many of the features observed in <span class="hlt">experiments</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016PhRvE..93a2105D','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016PhRvE..93a2105D"><span id="translatedtitle"><span class="hlt">Hysteretic</span> and intermittent regimes in the subcritical bifurcation of a quasi-one-dimensional system of interacting particles</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Dessup, Tommy; Coste, Christophe; Saint Jean, Michel</p> <p>2016-01-01</p> <p>In this article, we study the effects of white Gaussian additive thermal noise on a subcritical pitchfork bifurcation. We consider a quasi-one-dimensional system of particles that are transversally confined, with short-range (non-Coulombic) interactions and periodic boundary conditions in the longitudinal direction. In such systems, there is a structural transition from a linear order to a staggered row, called the zigzag transition. There is a finite range of transverse confinement stiffnesses for which the stable configuration at zero temperature is a localized zigzag pattern surrounded by aligned particles, which evidences the subcriticality of the bifurcation. We show that these configurations remain stable for a wide temperature range. At zero temperature, the transition between a straight line and such localized zigzag patterns is <span class="hlt">hysteretic</span>. We have studied the influence of thermal noise on the hysteresis loop. Its description is more difficult than at T =0 K since thermally activated jumps between the two configurations always occur and the system cannot stay forever in a unique metastable state. Two different regimes have to be considered according to the temperature value with respect to a critical temperature Tc(τobs) that depends on the observation time τobs. An hysteresis loop is still observed at low temperature, with a width that decreases as the temperature increases toward Tc(τobs) . In contrast, for T >Tc(τobs) the memory of the initial condition is lost by stochastic jumps between the configurations. The study of the mean residence times in each configuration gives a unique opportunity to precisely determine the barrier height that separates the two configurations, without knowing the complete energy landscape of this many-body system. We also show how to reconstruct the hysteresis loop that would exist at T =0 K from high-temperature simulations.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/26871022','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/26871022"><span id="translatedtitle"><span class="hlt">Hysteretic</span> and intermittent regimes in the subcritical bifurcation of a quasi-one-dimensional system of interacting particles.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Dessup, Tommy; Coste, Christophe; Saint Jean, Michel</p> <p>2016-01-01</p> <p>In this article, we study the effects of white Gaussian additive thermal noise on a subcritical pitchfork bifurcation. We consider a quasi-one-dimensional system of particles that are transversally confined, with short-range (non-Coulombic) interactions and periodic boundary conditions in the longitudinal direction. In such systems, there is a structural transition from a linear order to a staggered row, called the zigzag transition. There is a finite range of transverse confinement stiffnesses for which the stable configuration at zero temperature is a localized zigzag pattern surrounded by aligned particles, which evidences the subcriticality of the bifurcation. We show that these configurations remain stable for a wide temperature range. At zero temperature, the transition between a straight line and such localized zigzag patterns is <span class="hlt">hysteretic</span>. We have studied the influence of thermal noise on the hysteresis loop. Its description is more difficult than at T=0 K since thermally activated jumps between the two configurations always occur and the system cannot stay forever in a unique metastable state. Two different regimes have to be considered according to the temperature value with respect to a critical temperature T_{c}(τ_{obs}) that depends on the observation time τ_{obs}. An hysteresis loop is still observed at low temperature, with a width that decreases as the temperature increases toward T_{c}(τ_{obs}). In contrast, for T>T_{c}(τ_{obs}) the memory of the initial condition is lost by stochastic jumps between the configurations. The study of the mean residence times in each configuration gives a unique opportunity to precisely determine the barrier height that separates the two configurations, without knowing the complete energy landscape of this many-body system. We also show how to reconstruct the hysteresis loop that would exist at T=0 K from high-temperature simulations. PMID:26871022</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2016SuScT..29c4008V&link_type=ABSTRACT','NASAADS'); return false;" href="http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2016SuScT..29c4008V&link_type=ABSTRACT"><span id="translatedtitle">Estimation of <span class="hlt">hysteretic</span> losses for MgB2 tapes under the operating conditions of a generator</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Vargas-Llanos, Carlos Roberto; Zermeño, Víctor M. R.; Sanz, Santiago; Trillaud, Frederic; Grilli, Francesco</p> <p>2016-03-01</p> <p><span class="hlt">Hysteretic</span> losses in the MgB2 wound superconducting coils of a 550 kW synchronous hybrid scaled generator were estimated as part of the European project SUPRAPOWER led by the Spanish Fundación Tecnalia Research & Innovation. Particular interest was given to the losses caused by the magnetic flux ripples in the rotor coils originating from the conventional stator during nominal operation. To compute these losses, a 2D finite element analysis was conducted and Maxwell’s equations written in the H-formulation were solved considering the nonlinear material properties of the conductor materials. The modeled tapes are made of multiple MgB2 filaments embedded in a Ni matrix and soldered to a high purity copper strip and insulated with Dacron braid. Three geometrical models of single tape cross sections of decreasing complexity were studied: (1) the first model reproduced closely the actual cross section obtained from tape micrographs. (2) The second model was obtained from the computed elasto-plastic deformation of a round Ni wire. (3) The third model was based on a simplified cross section with the superconducting filaments bundled in a single elliptical bulky structure. The last geometry allowed the validation of the modeling technique by comparing numerical losses with results from well-established analytical expressions. Additionally, the following cases of filament transpositions of the multi-filamentary tape were studied: no transposition, partial and full transposition; thereby improving understanding of the relevance of the tape fabrication process on the magnitude of the determination of ac losses. Finally, choosing the right level of geometrical detail, the following operational regimes of the machine and its impact on individual superconducting tape losses in the rotor were studied: bias-dc current, ramping current under ramping background field and magnetic flux ripples under dc background current and field.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012PhDT........14U&link_type=ABSTRACT','NASAADS'); return false;" href="http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012PhDT........14U&link_type=ABSTRACT"><span id="translatedtitle">Selective All-Wet Metallization of Silicon for <span class="hlt">Hysteretic</span> Power Microswitches</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Uncuer, Muhammet</p> <p></p> <p> electroless Au-to-Au contact from the source to the drain has been characterized. It has been found that the current-voltage (Ids-Vds) curves show ohmic characteristics with modest contact resistance of 5 kΩ. Moreover, the fabricated devices display over-damped behavior with a switching time of around 80 µs and squeeze-film damping of 0.0023 N-s/m². Lifetime/reliability <span class="hlt">experiments</span> have shown promising results (exceeding 2000 stable hot cycling with a current load of 1 mA); however more improvement is necessary for an eventual marketable product. What is more, intentional stress-imbalance is induced on the fabricated micro-structures to determine thin-film stresses for the electroless Cu (tensile stress of 45 MPa for 100 nm thick film) and Au/Cu (tensile stress of 56 MPa for 100 nm thick film) for the material characterization purposes.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016PhyB..486..101B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016PhyB..486..101B"><span id="translatedtitle">On the identification of Hammerstein systems in the presence of an input <span class="hlt">hysteretic</span> nonlinearity with nonlocal memory: Piezoelectric actuators - an experimental case study</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Butcher, Mark; Giustiniani, Alessandro; Masi, Alessandro</p> <p>2016-04-01</p> <p>The identification problem of the linear dynamic part of piezo based actuators is addressed in this paper, exploiting the use of binary signals, specifically the pseudo random binary sequences (PRBS). Due to the presence of nonlocal memory <span class="hlt">hysteretic</span> behavior in piezoelectric active materials, the dependence of the identification results on this strongly nonlinear effect is analyzed and useful guidelines for the design of the PRBS stimulating signal are derived. Moreover, some properties of hysteresis like cancellation and congruency are experimentally analyzed and their effects on the identification process are discussed. Finally, the use of a hysteresis compensation strategy in the identification process is evaluated and discussed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2015AGUFMEP54A..03J&link_type=ABSTRACT','NASAADS'); return false;" href="http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2015AGUFMEP54A..03J&link_type=ABSTRACT"><span id="translatedtitle">Collisions, Cannibals, and the Memory of Long-lost Bed Forms: The <span class="hlt">Hyster(et)ical</span> Story Revealed</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Jerolmack, D. J.; Martin, R. L.</p> <p>2015-12-01</p> <p>Sandy river-bed morphology often lags changes in water discharge, producing hysteresis in the relation between discharge and bed-form geometry. While this effect is well known, its origins are not. In this talk we present experimental and field results that reveal these origins. We show that the primary mechanism of bed form growth in a rising flood is merger induced by collisions, which occur due to a dispersion in migration rates. At the start of a flood the bed forms are small and transport rate is high, so growth is rapid. Conversely, on the falling limb of a flood the bed forms are large while the transport rate is small. If the flood recedes rapidly enough, the large bed forms cease migrating and small, secondary bed forms emerge on their backs. These smaller features cannibalize the original, relict structures which slowly diffuse away. (We do not distinguish between ripples and dunes, the data do not indicate any reason to do so, and we therefore recuse ourselves from discussing that tiring topic.). The timescale of decay is much larger than growth, leaving a memory of peak-flood conditions that may persist until the next flood. Thus, the timescales of both growth (Tg) and decay (Td) are related to a simple bed form turnover time - the time to displace a bed form's volume by transport - however, the turnover time is different for growth vs. decay. This reveals three different regimes for the response of bed forms to a flood: (1) a slow flood with a timescale Tf > Td > Tg is quasi-steady, i.e., bed forms grow and shrink with no lag between morphology and flow; (2) an intermediate flood with Td > Tf > Tg exhibits quasi-steady growth, but decay lags the flow; and (3) a fast flood with Td > Tg > Tf produces a lag between morphology and flow over the entire hydrograph. Regimes 2 and 3 produce <span class="hlt">hysteretical</span> behavior, with 3 being the most extreme. We discuss the implications of these results for: predicting stage-discharge relations, anticipating and understanding</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/27415365','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/27415365"><span id="translatedtitle"><span class="hlt">Hysteretic</span> Faraday waves.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Périnet, Nicolas; Falcón, Claudio; Chergui, Jalel; Juric, Damir; Shin, Seungwon</p> <p>2016-06-01</p> <p>We report on the numerical and theoretical study of the subcritical bifurcation of parametrically amplified waves appearing at the interface between two immiscible incompressible fluids when the layer of the lower fluid is very shallow. As a critical control parameter is surpassed, small amplitude surface waves bifurcate subcritically toward highly nonlinear ones with twice their amplitude. We relate this hysteresis with the change of shear stress using a simple stress balance, in agreement with numerical results. PMID:27415365</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/1093723','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/1093723"><span id="translatedtitle">Low Temperature <span class="hlt">Hysteretic</span> Behavior of the Interpenetrating 3-D Network Structured [Ru2(O2CMe)4]3[Fe(CN)6] Magnet</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Haque, F.; Del barco, Enrique; Fishman, Randy Scott; Miller, Joel S.</p> <p>2013-01-01</p> <p>The low temperature <span class="hlt">hysteretic</span> behavior between 40 mK and 4.8 K was obtained for [Ru2(O2CMe)4]3[Fe(CN)6]. The unusual constricted <span class="hlt">hysteretic</span> behavior reported for isomorphous [Ru2(O2CMe)4]3[Cr(CN)6] was not observed. Instead, the [Ru2(O2CMe)4]3-[Fe(CN)6] exhibits a single hysteresis loop and a temperature dependence of the coercivity atypical for a ferrimagnetic ordering transition. The coercive field, constant below ~0.3 K (1.06 kOe), shows a rapid initial decrease below 1 K, to continue decreasing at a slower rate up to at least 4.8 K. In contrast to [Ru2(O2CMe)4]3[Cr(CN)6] which has antiferromagnetic coupling of the ferrimagnetic lattices, due to the reduced spin on the [FeIII(CN)6]3-, [Ru2(O2CMe)4]3[Fe(CN)6] ferromagnetic coupling of the ferrimagnetic lattices dominates for [Ru2(O2CMe)4]3[Fe(CN)6].</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015EPJWC..9404035M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015EPJWC..9404035M"><span id="translatedtitle">Multiaxial behavior of foams - <span class="hlt">Experiments</span> and modeling</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Maheo, Laurent; Guérard, Sandra; Rio, Gérard; Donnard, Adrien; Viot, Philippe</p> <p>2015-09-01</p> <p>Cellular materials are strongly related to pressure level inside the material. It is therefore important to use <span class="hlt">experiments</span> which can highlight (i) the pressure-volume behavior, (ii) the shear-shape behavior for different pressure level. Authors propose to use hydrostatic compressive, shear and combined pressure-shear tests to determine cellular materials behavior. Finite Element Modeling must take into account these behavior specificities. Authors chose to use a behavior law with a Hyperelastic, a Viscous and a <span class="hlt">Hysteretic</span> contributions. Specific developments has been performed on the Hyperelastic one by separating the spherical and the deviatoric part to take into account volume change and shape change characteristics of cellular materials.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/26573215','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/26573215"><span id="translatedtitle">A polymorphism-dependent T(1/2) shift of 100 K in a <span class="hlt">hysteretic</span> spin-crossover complex related to differences in intermolecular weak CH···X hydrogen bonds (X = S vs. S and N).</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Hagiwara, Hiroaki; Okada, Shohei</p> <p>2016-01-14</p> <p>A neutral mononuclear iron(II) complex with a 1,2,3-triazole-containing tetradentate ligand has been obtained as two solvent-free polymorphs. Both polymorphs show <span class="hlt">hysteretic</span> spin crossover with a polymorphism-dependent T(1/2) shift of 100 K that spans room temperature due to differences in intermolecular weak CH···X hydrogen-bonding interactions (X = S vs. S and N). PMID:26573215</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015SeScT..30d5011L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015SeScT..30d5011L"><span id="translatedtitle">Quantitative analysis and prediction of experimental observations on quasi-static <span class="hlt">hysteretic</span> metal-ferroelectric-metal-insulator-semiconductor FET and its dynamic behaviour based on Landau theory</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Li, Yang; Lian, Yong; Samudra, Ganesh S.</p> <p>2015-04-01</p> <p>Due to internal voltage amplification induced by the negative capacitance of ferroelectrics, the metal-ferroelectric-metal-insulator-semiconductor (MFMIS) FET has been widely investigated to explore its potential application in low power devices. Based on Landau theory and stability criterion, a simulation program is implemented and MFMIS structure is quantitatively analyzed. The results show that it can be appropriately designed for both integrated circuits and memory devices by tuning capacitances contributed by MOSFET dielectric stack and ferroelectrics. Our simulation results on electrical characteristics of ferroelectric devices agree well with both quasi-static and dynamic experimental observations. The influence of the ferroelectric/dielectric layer thickness and area as well as temperature on <span class="hlt">hysteretic</span> polarization-electric field characteristic of a ferroelectric are successfully explained. For a C-V loop sweeping over the gate voltage in MFMIS, possible asymmetry in the accessible negative capacitance region is also interpreted. Moreover, experimentally observed reduction in the equivalent capacitance of the ferroelectric-dielectric bilayer at high frequency is confirmed by Landau-Khalatnikov theory based simulation. Our work provides a more complete and explicit analytical treatment to understand the effect of negative capacitance of a ferroelectric on device performance.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1997Cryo...37...49C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1997Cryo...37...49C"><span id="translatedtitle">Second VAMAS a.c. loss measurement intercomparison: magnetization measurement of low-frequency (<span class="hlt">hysteretic</span>) a.c. loss in NbTi multifilamentary strands</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Collings, E. W.; Sumption, M. D.; Itoh, K.; Wada, H.; Tachikawa, K.</p> <p></p> <p>The results of the 2 nd VAMAS measurement intercomparison program on low-frequency (<span class="hlt">hysteretic</span>) a.c. loss are presented and discussed. Two sets of multifilamentary NbTi strands (Set No. 1: copper matrix, fil. diams 0.5, 1, 3, and 12 μm; Set No. 2: cupronickel matrix, fil. diams 0.4, 0.5, and 1 μm) were subjected to interlaboratory testing. In an initial series of tests, samples in various forms (e.g. wire bundles, coils) were measured mostly by vibrating-sample- and SQUID magnetometry. Considerable scatter was noted especially in the small-filament-diameter a.c.-loss data. In a study of measurement accuracy, a supplementary series of tests compared the results of VSM measurement of a given pair of copper-matrix samples. In the light of all the results, factors contributing to a.c. loss error are discussed and recommendations are made concerning the specification of future a.c.-loss measurement intercomparisons.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012JAP...112j4103P','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012JAP...112j4103P"><span id="translatedtitle">The impact of the Pb(Zr,Ti)O3-ZnO interface quality on the <span class="hlt">hysteretic</span> properties of a metal-ferroelectric-semiconductor structure</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Pintilie, I.; Pasuk, I.; Ibanescu, G. A.; Negrea, R.; Chirila, C.; Vasile, E.; Pintilie, L.</p> <p>2012-11-01</p> <p>The <span class="hlt">hysteretic</span> properties of metal-ferroelectric-semiconductor (MFS) structures based on Pb(Zr0.2Ti0.8)O3 (PZT) and ZnO films were studied with respect of the quality of the PZT-ZnO interface. The films were grown by pulsed laser deposition (PLD) on platinized silicon (Pt/Si) substrate and on single crystal, (001) oriented SrTiO3 (STO) substrates. The structural analysis has revealed that the PZT-ZnO stack grown on single crystal STO is epitaxial, while the structure grown on Pt/Si has columnar texture. The temperature change of the capacitance-voltage (C-V) hysteresis direction, from clockwise at low temperatures to counter clockwise at high temperatures, was observed at around 300 K in the case of the MFS structure grown by PLD on Pt/Si substrate. This temperature is lower than the one reported for the case of the PZT-ZnO structure grown by sol-gel on Pt/Si substrate (Pintilie et al., Appl. Phys. Lett. 96, 012903 (2010)). In the fully epitaxial structures the C-V hysteresis is counter clockwise even at 100 K. These findings strongly points out that the quality of the PZT-ZnO interface is essential for having a C-V hysteresis of ferroelectric nature, with negligible influence from the part of the interface states and with a memory window of about 5 V at room temperature.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3935188','PMC'); return false;" href="http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3935188"><span id="translatedtitle">Positive exchange-bias and giant vertical <span class="hlt">hysteretic</span> shift in La0.3Sr0.7FeO3/SrRuO3 bilayers</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Rana, Rakesh; Pandey, Parul; Singh, R. P.; Rana, D. S.</p> <p>2014-01-01</p> <p>The exchange-bias effects in the mosaic epitaxial bilayers of the itinerant ferromagnet (FM) SrRuO3 and the antiferromagnetic (AFM) charge-ordered La0.3Sr0.7FeO3 were investigated. An uncharacteristic low-field positive exchange bias, a cooling-field driven reversal of positive to negative exchange-bias and a layer thickness optimised unusual vertical magnetization shift were all novel facets of exchange bias realized for the first time in magnetic oxides. The successive magnetic training induces a transition from positive to negative exchange bias regime with changes in domain configurations. These observations are well corroborated by the <span class="hlt">hysteretic</span> loop asymmetries which display the modifications in the AFM spin correlations. These exotic features emphasize the key role of i) mosaic disorder induced subtle interplay of competing AFM-superexchange and FM double exchange at the exchange biased interface and, ii) training induced irrecoverable alterations in the AFM spin structure. PMID:24569516</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_4");'>4</a></li> <li><a href="#" onclick='return showDiv("page_5");'>5</a></li> <li class="active"><span>6</span></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_6 --> <div id="page_7" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_5");'>5</a></li> <li><a href="#" onclick='return showDiv("page_6");'>6</a></li> <li class="active"><span>7</span></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="121"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/542922','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/542922"><span id="translatedtitle">An experimental investigation of the role of pore fluids on the nonlinear <span class="hlt">hysteretic</span> behavior of Berea sandstone</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Tutuncu, A.N.; Sharma, M.M.; Podio, A.L.</p> <p>1995-12-31</p> <p>Uniaxial stress cycling <span class="hlt">experiments</span> were conducted on dry, brine saturated and hexadecane saturated Berea sandstone samples to observe the hysteresis in stress-strain diagrams and to understand the influence of different fluids on the strain amplitude dependence of elastic moduli and attenuation. Cycling <span class="hlt">experiments</span> were also conducted with sandstone samples saturated with CTAB, a cationic surfactant that renders the mineral surfaces hydrophobic. Hexadecane and CTAB was selected to investigate the relative contributions of adhesion hysteresis and stick-slip sliding on attenuation in sedimentary granular rocks. Young`s moduli and Poisson`s ratios obtained from the cycling tests show a significant dependence on strain amplitude on dry as well as water and hexadecane saturated samples. Bow-tie shaped diagrams are obtained when loading and unloading tangent moduli are plotted against strain. The type of fluid in the pore space and at the grain contacts has a large influence on the rock stiffness and hysteresis observed in the stress-strain diagrams but very little effect on the magnitude of attenuation.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/22280603','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/22280603"><span id="translatedtitle"><span class="hlt">Hysteretic</span> behavior of Fe(phen){sub 2}(NCS){sub 2} spin-transition microparticles vs. the environment: A huge reversible component resolved by first order reversal curves</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Tanasa, Radu; Stancu, Alexandru; Enachescu, Cristian; Laisney, Jérôme; Boillot, Marie-Laure</p> <p>2014-01-20</p> <p>We discuss the influence of the embedding matrix on the thermal <span class="hlt">hysteretic</span> behavior of spin transition microparticles of Fe(phen){sub 2}(NCS){sub 2} by using a series of experimental first order reversal curves (FORCs). The shape of FORCs supports the hypothesis considering additional interactions between the spin-transition microparticles and the embedding matrix, which compares to a negative pressure on the particles. A mean-field approach based on negative variable external pressures, together with a cut off/switch on of particles-matrix interactions accounts for the experimental features.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1090229','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1090229"><span id="translatedtitle">2169 steel waveform <span class="hlt">experiments</span>.</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Furnish, Michael David; Alexander, C. Scott; Reinhart, William Dodd; Brown, Justin L.</p> <p>2012-11-01</p> <p>In support of LLNL efforts to develop multiscale models of a variety of materials, we have performed a set of eight gas gun impact <span class="hlt">experiments</span> on 2169 steel (21% Cr, 6% Ni, 9% Mn, balance predominantly Fe). These <span class="hlt">experiments</span> provided carefully controlled shock, reshock and release velocimetry data, with initial shock stresses ranging from 10 to 50 GPa (particle velocities from 0.25 to 1.05 km/s). Both windowed and free-surface measurements were included in this <span class="hlt">experiment</span> set to increase the utility of the data set, as were samples ranging in thickness from 1 to 5 mm. Target physical phenomena included the elastic/plastic transition (Hugoniot elastic limit), the Hugoniot, any phase transition phenomena, and the release path (windowed and free-surface). The Hugoniot was found to be nearly linear, with no indications of the Fe <U+F061> - <U+F065> phase transition. Releases were non-<span class="hlt">hysteretic</span>, and relatively consistent between 3- and 5-mm-thick samples (the 3 mm samples giving slightly lower wavespeeds on release). Reshock tests with explosively welded impactors produced clean results; those with glue bonds showed transient releases prior to the arrival of the reshock, reducing their usefulness for deriving strength information. The free-surface samples, which were steps on a single piece of steel, showed lower wavespeeds for thin (1 mm) samples than for thicker (2 or 4 mm) samples. A configuration used for the last three shots allows release information to be determined from these free surface samples. The sample strength appears to increase with stress from ~1 GPa to ~ 3 GPa over this range, consistent with other recent work but about 40% above the Steinberg model.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014JPhCS.507b2008H','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014JPhCS.507b2008H"><span id="translatedtitle"><span class="hlt">Hysteretic</span> Dependence of Magnetic Flux Density on Primary AC Current in Flat-Type Inductive Fault Current Limiter with YBCO Thin Film Discs</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Harada, Masayuki; Yokomizu, Yasunobu; Matsumura, Toshiro</p> <p>2014-05-01</p> <p>This paper focuses on a flat-type inductive superconducting FCL (FIS-FCL) consisting of a pancake coil and a YBCO thin layer disc. AC current injection <span class="hlt">experiments</span> and magnetic field analysis were carried out for two kinds of FIS-FCL, single-disc model and double-discs model. In the former, the pancake coil was putted on the YBCO disc. In the latter, the pancake coil was sandwiched with two YBCO discs. The double-discs model cancels out the magnetic flux density more effectively than the single-disc model. In the double-discs model, the superconducting state period is longer than in the single-disc model. Thus, it may be concluded that the double-discs model is considered to be suitable for FIS-FCL.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015PhRvB..91r4105Z','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015PhRvB..91r4105Z"><span id="translatedtitle"><span class="hlt">Hysteretic</span> phase transition sequence in 0.67 Pb (M g1 /3N b2 /3)O3-0.33 PbTi O3 single crystal driven by electric field and temperature</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Zheng, Limei; Lu, Xiaoyan; Shang, Hengshan; Xi, Zengzhe; Wang, Ruixue; Wang, Junjun; Zheng, Peng; Cao, Wenwu</p> <p>2015-05-01</p> <p>Domain pattern variations with temperature were studied by polarizing light microscopy for the morphotropic phase boundary composition 0.67 Pb (M g1 /3N b2 /3)O3-0.33 PbTi O3 (PMN-0.33PT) single crystal. At room temperature, the monoclinic MA phase is the dominant phase in the unpoled crystal, which coexists with a small fraction of the tetragonal (T) phase. The orientation of spontaneous polarization was calculated to be ˜4 .8° away from the pseudocubic <111> C in the {001} C plane family. Under an electric field of 6 kV/cm along [011] C, a single domain orthorhombic (O) phase was induced but partially switched back to MA a few hours after the removal of the E field. It was found that the temperature induced phase transition sequence of the [011] C poled PMN-0.33PT single crystal is strongly <span class="hlt">hysteretic</span>. On heating, the phase transition sequence is as follows: coexistence of O phase and MA→rhombohedral →monoclinic MC→cubic (C ) . On cooling, the phase transition sequence is given by C →T →MA . The complete set of dielectric, piezoelectric, and elastic constants for the [011] C poled PMN-0.33PT single crystal was measured, which showed the strong feature of the single domain O phase with high shear (d15=2321 pC /N ,d24=1941 pC /N ) and low longitudinal piezoelectric coefficients (d33=165 pC /N ) .</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/26905293','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/26905293"><span id="translatedtitle">The uncoupled ATPase activity of the ABC transporter BtuC2D2 leads to a <span class="hlt">hysteretic</span> conformational change, conformational memory, and improved activity.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Livnat-Levanon, Nurit; I Gilson, Amy; Ben-Tal, Nir; Lewinson, Oded</p> <p>2016-01-01</p> <p>ABC transporters comprise a large and ubiquitous family of proteins. From bacteria to man they translocate solutes at the expense of ATP hydrolysis. Unlike other enzymes that use ATP as an energy source, ABC transporters are notorious for having high levels of basal ATPase activity: they hydrolyze ATP also in the absence of their substrate. It is unknown what are the effects of such prolonged and constant activity on the stability and function of ABC transporters or any other enzyme. Here we report that prolonged ATP hydrolysis is beneficial to the ABC transporter BtuC2D2. Using ATPase assays, surface plasmon resonance interaction <span class="hlt">experiments</span>, and transport assays we observe that the constantly active transporter remains stable and functional for much longer than the idle one. Remarkably, during extended activity the transporter undergoes a slow conformational change (hysteresis) and gradually attains a hyperactive state in which it is more active than it was to begin with. This phenomenon is different from stabilization of enzymes by ligand binding: the hyperactive state is only reached through ATP hydrolysis, and not ATP binding. BtuC2D2 displays a strong conformational memory for this excited state, and takes hours to return to its basal state after catalysis terminates. PMID:26905293</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4765350','PMC'); return false;" href="http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4765350"><span id="translatedtitle">The uncoupled ATPase activity of the ABC transporter BtuC2D2 leads to a <span class="hlt">hysteretic</span> conformational change, conformational memory, and improved activity</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Livnat-Levanon, Nurit; I. Gilson, Amy; Ben-Tal, Nir; Lewinson, Oded</p> <p>2016-01-01</p> <p>ABC transporters comprise a large and ubiquitous family of proteins. From bacteria to man they translocate solutes at the expense of ATP hydrolysis. Unlike other enzymes that use ATP as an energy source, ABC transporters are notorious for having high levels of basal ATPase activity: they hydrolyze ATP also in the absence of their substrate. It is unknown what are the effects of such prolonged and constant activity on the stability and function of ABC transporters or any other enzyme. Here we report that prolonged ATP hydrolysis is beneficial to the ABC transporter BtuC2D2. Using ATPase assays, surface plasmon resonance interaction <span class="hlt">experiments</span>, and transport assays we observe that the constantly active transporter remains stable and functional for much longer than the idle one. Remarkably, during extended activity the transporter undergoes a slow conformational change (hysteresis) and gradually attains a hyperactive state in which it is more active than it was to begin with. This phenomenon is different from stabilization of enzymes by ligand binding: the hyperactive state is only reached through ATP hydrolysis, and not ATP binding. BtuC2D2 displays a strong conformational memory for this excited state, and takes hours to return to its basal state after catalysis terminates. PMID:26905293</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014NJPh...16h3001F','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014NJPh...16h3001F"><span id="translatedtitle">Robust estimate of dynamo thresholds in the von Kármán sodium <span class="hlt">experiment</span> using the extreme value theory</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Faranda, Davide; Bourgoin, Mickaël; Miralles, Sophie; Odier, Philippe; Pinton, Jean-François; Plihon, Nicolas; Daviaud, Francois; Dubrulle, Bérengère</p> <p>2014-08-01</p> <p>We apply a new threshold detection method based on the extreme value theory (EVT) to the von Kármán sodium (VKS) <span class="hlt">experiment</span> data. The VKS <span class="hlt">experiment</span> is a successful attempt to get a dynamo magnetic field in a laboratory liquid-metal <span class="hlt">experiment</span>. We first show that the dynamo threshold is associated with a change of the probability density function of the extreme values of the magnetic field. This method does not require the measurement of response functions from applied external perturbations and thus provides a simple threshold estimate. We apply our method to different configurations in the VKS <span class="hlt">experiment</span>, showing that it yields a robust indication of the dynamo threshold as well as evidence of <span class="hlt">hysteretic</span> behaviors. Moreover, for the experimental configurations in which a dynamo transition is not observed, the method provides a way to extrapolate an interval of possible threshold values.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/22403204','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/22403204"><span id="translatedtitle">Probing quantum and classical turbulence analogy in von Kármán liquid helium, nitrogen, and water <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Saint-Michel, B.; Herbert, E.; Salort, J.; Castaing, B.; Chevillard, L.; Daviaud, F.; Dubrulle, B.; Lehner, Th.</p> <p>2014-12-15</p> <p>We report measurements of the dissipation in the Superfluid helium high REynold number von Kármán flow <span class="hlt">experiment</span> for different forcing conditions. Statistically steady flows are reached; they display a <span class="hlt">hysteretic</span> behavior similar to what has been observed in a 1:4 scale water <span class="hlt">experiment</span>. Our macroscopical measurements indicate no noticeable difference between classical and superfluid flows, thereby providing evidence of the same dissipation scaling laws in the two phases. A detailed study of the evolution of the hysteresis cycle with the Reynolds number supports the idea that the stability of the steady states of classical turbulence in this closed flow is partly governed by the dissipative scales. It also supports the idea that the normal and the superfluid components at these temperatures (1.6 K) are locked down to the dissipative length scale.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012AGUFMEP51D..02P','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012AGUFMEP51D..02P"><span id="translatedtitle">Submarine sand volcanos: <span class="hlt">experiments</span> and numerical modelling</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Philippe, P.; Ngoma, J.; Delenne, J.</p> <p>2012-12-01</p> <p>Fluid overpressure at the bottom of a soil layer may generate fracturation in preferential paths for a cohesive material. But the case of sandy soils is rather different: a significant internal flow is allowed within the material and can potentially induce hydro-mechanical instabilities whose most common example is fluidization. Many works have been devoted to fluidization but very few have the issue of initiation and development of a fluidized zone inside a granular bed, prior entire fluidization of the medium. In this contribution, we report experimental results and numerical simulations on a model system of immersed sand volcanos generated by a localized upward spring of liquid, injected at constant flow-rate at the bottom of a granular layer. Such a localized state of fluidization is relevant for some industrial processes (spouted bed, maintenance of navigable waterways,…) and for several geological issues (kimberlite volcano conduits, fluid venting, oil recovery in sandy soil, More precisely, what is presented here is a comparison between <span class="hlt">experiments</span>, carried out by direct visualization throughout the medium, and numerical simulations, based on DEM modelling of the grains coupled to resolution of NS equations in the liquid phase (LBM). There is a very good agreement between the experimental phenomenology and the simulation results. When the flow-rate is increased, three regimes are successively observed: static bed, fluidized cavity that does not extend to the top of the layer, and finally fluidization over the entire height of layer that creates a fluidized chimney. A very strong <span class="hlt">hysteretic</span> effect is present here with an extended range of stability for fluidized cavities when flow-rate is decreased back. This can be interpreted in terms force chains and arches. The influences of grain diameter, layer height and injection width are studied and interpreted using a model previously developed by Zoueshtiagh [1]. Finally, growing rate of the fluidized zone and</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2007AIPC..955.1181H','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2007AIPC..955.1181H"><span id="translatedtitle">Analyzing Ramp Compression Wave <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Hayes, D. B.</p> <p>2007-12-01</p> <p>Isentropic compression of a solid to 100's of GPa by a ramped, planar compression wave allows measurement of material properties at high strain and at modest temperature. Introduction of a measurement plane disturbs the flow, requiring special analysis techniques. If the measurement interface is windowed, the unsteady nature of the wave in the window requires special treatment. When the flow is hyperbolic the equations of motion can be integrated backward in space in the sample to a region undisturbed by the interface interactions, fully accounting for the untoward interactions. For more complex materials like <span class="hlt">hysteretic</span> elastic/plastic solids or phase changing material, hybrid analysis techniques are required.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=psychology+AND+experiment&pg=2&id=EJ621864','ERIC'); return false;" href="http://eric.ed.gov/?q=psychology+AND+experiment&pg=2&id=EJ621864"><span id="translatedtitle">Psychology <span class="hlt">Experiments</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>McGraw, Ken; Tew, Mark D.; Williams, John E.</p> <p>2001-01-01</p> <p>A goal of the Psych<span class="hlt">Experiments</span> project was to reduce the financial burden on psychology departments for hardware/software used in their laboratories. In its third year, the Psych<span class="hlt">Experiments</span> site now hosts 39 <span class="hlt">experiments</span>. Over 200 classrooms worldwide have signed up as official site users and there have been nearly 10,000 data sessions conducted.…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=Ashton&pg=3&id=EJ186312','ERIC'); return false;" href="http://eric.ed.gov/?q=Ashton&pg=3&id=EJ186312"><span id="translatedtitle">Language <span class="hlt">Experience</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Bugh, Marylou</p> <p>1978-01-01</p> <p>When a child uses his words and his ideas in learning to read, he also assists in the normal integration of his personality. Starting with a method of language <span class="hlt">experience</span> developed by Sylvia Ashton-Warner, the author, a reading consultant, describes a language <span class="hlt">experience</span>-reading program which utilizes the student's own curiosity and interests. (RK)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=programmable+AND+calculator&pg=4&id=EJ121592','ERIC'); return false;" href="http://eric.ed.gov/?q=programmable+AND+calculator&pg=4&id=EJ121592"><span id="translatedtitle">Simulated <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Snadden, R. B.; Runquist, O.</p> <p>1975-01-01</p> <p>Presents an <span class="hlt">experiment</span> in which a programmable calculator is employed as a data generating system for simulated laboratory <span class="hlt">experiments</span>. The example used as an illustration is a simulated conductimetric titration of an aqueous solution of HC1 with an aqueous solution of NaOH. (Author/EB)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/6126934','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/6126934"><span id="translatedtitle">TRIO <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Clemmer, R.G.; Finn, P.A.; Malecha, R.F.; Misra, B.; Billone, M.C.; Bowers, D.L.; Fischer, A.K.; Greenwood, L.R.; Mattas, R.F.; Tam, S.W.</p> <p>1984-09-01</p> <p>The TRIO <span class="hlt">experiment</span> is a test of in-situ tritium recovery and heat transfer performance of a miniaturized solid breeder blanket assembly. The assembly (capsule) was monitored for temperature and neutron flux profiles during irradiation and a sweep gas flowed through the capsule to an anaytical train wherein the amounts of tritium in its various chemical forms were determined. The capsule was designed to operate at different temperatures and sweep gas conditions. At the end of the <span class="hlt">experiment</span> the amount of tritium retained in the solid was at a concentration of less than 0.1 wppM. More than 99.9% of tritium generated during the <span class="hlt">experiment</span> was successfully recovered. The results of the <span class="hlt">experiment</span> showed that the tritium inventories at the beginning and at the end of the <span class="hlt">experiment</span> follow a relationship which appears to be characteristic of intragranular diffusion.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=gas+AND+exchange&pg=2&id=EJ185734','ERIC'); return false;" href="http://eric.ed.gov/?q=gas+AND+exchange&pg=2&id=EJ185734"><span id="translatedtitle"><span class="hlt">Experience</span> Industry</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Laslett, R. L.</p> <p>1978-01-01</p> <p>The author, a tertiary chemistry teacher, spent a period of six weeks in a research project with an industrial firm. Describes his <span class="hlt">experience</span>, the benefits and insight he gained from such an exchange. (GA)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=proton&pg=7&id=EJ157437','ERIC'); return false;" href="http://eric.ed.gov/?q=proton&pg=7&id=EJ157437"><span id="translatedtitle">Interpretive <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>DeHaan, Frank, Ed.</p> <p>1977-01-01</p> <p>Describes an interpretative <span class="hlt">experiment</span> involving the application of symmetry and temperature-dependent proton and fluorine nmr spectroscopy to the solution of structural and kinetic problems in coordination chemistry. (MLH)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2010idac.book..335V','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2010idac.book..335V"><span id="translatedtitle"><span class="hlt">Experiment</span> Databases</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Vanschoren, Joaquin; Blockeel, Hendrik</p> <p></p> <p>Next to running machine learning algorithms based on inductive queries, much can be learned by immediately querying the combined results of many prior studies. Indeed, all around the globe, thousands of machine learning <span class="hlt">experiments</span> are being executed on a daily basis, generating a constant stream of empirical information on machine learning techniques. While the information contained in these <span class="hlt">experiments</span> might have many uses beyond their original intent, results are typically described very concisely in papers and discarded afterwards. If we properly store and organize these results in central databases, they can be immediately reused for further analysis, thus boosting future research. In this chapter, we propose the use of <span class="hlt">experiment</span> databases: databases designed to collect all the necessary details of these <span class="hlt">experiments</span>, and to intelligently organize them in online repositories to enable fast and thorough analysis of a myriad of collected results. They constitute an additional, queriable source of empirical meta-data based on principled descriptions of algorithm executions, without reimplementing the algorithms in an inductive database. As such, they engender a very dynamic, collaborative approach to experimentation, in which <span class="hlt">experiments</span> can be freely shared, linked together, and immediately reused by researchers all over the world. They can be set up for personal use, to share results within a lab or to create open, community-wide repositories. Here, we provide a high-level overview of their design, and use an existing <span class="hlt">experiment</span> database to answer various interesting research questions about machine learning algorithms and to verify a number of recent studies.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2016EGUGA..18.5048M&link_type=ABSTRACT','NASAADS'); return false;" href="http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2016EGUGA..18.5048M&link_type=ABSTRACT"><span id="translatedtitle">The <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Mariana Nicoara, Floare</p> <p>2016-04-01</p> <p>My name is Nicoara Floarea and I am teacher at Secondary School Calatele and I teach students from preparatory class and the second grade . They are six-eight years old. In my activity, for introducing scientific concepts to my students, I use various and active methods or traditional methods including <span class="hlt">experiments</span>. The <span class="hlt">experiment</span> stimulates students' curiosity, their creativity, the understanding and knowledge taught accessibility. I propose you two such <span class="hlt">experiments</span>: The life cycle of the plants (long-term <span class="hlt">experiment</span>, with rigorous observation time):We use beans, wheat or other; They are grown in pots and on the cotton soaked with water,keeping under students' observation protecting them ( just soak them regularly) and we waiting the plants rise. For discussions and comments of plant embryo development we use the plants which rose on the cotton soaked with water plants at the end of the first week. Last school year we had in the pot climbing beans which in May made pods. They were not too great but our <span class="hlt">experiment</span> was a success. The students could deduce that there will develop those big beans which after drying will be planted again. The influence of light on plants (average duration <span class="hlt">experiment</span> with the necessary observation time): We use two pots in which plants are of the same type (two geraniums), one of them is situated so as to get direct sunlight and other plant we put in a closed box. Although we wet both plants after a week we see that the plant that benefited from sunlight has turned strain in direct sunlight, developing normally in return the plant out of the box I have yellowed leaves, photosynthesis does not She has occurred . Students will understand the vital role of the Sun in plants' life, both in the classroom and in nature. The <span class="hlt">experiment</span> is a method of teaching students extremely pleasant, with a remarkable percentage of acquiring more knowledge.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1244355','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1244355"><span id="translatedtitle"><span class="hlt">Experiment</span> 2042</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Dash, Zora V.; Dennis, Bert R.; Dreesen, Donald S.; Fehler, Michael C.; House, Leigh S.; Walter, Fritz; Zyvoloski, George A.</p> <p>1984-09-10</p> <p><span class="hlt">Experiment</span> 2042, an injection test in EE-3, was conducted from May 15, 1984 through May 19, 1984. During this four day test ~2 million gallons of water were injected with a maximum injection rate of ~10BPM at 6000 psi. It was planned as a pumping test of the lower zone of well EE-3 (the open hole region from 11,400 ft to 11,648 ft) to test the reservoir characteristics and fracture-seismic system first created during <span class="hlt">Experiment</span> 2025. However early in the <span class="hlt">experiment</span> it became apparent that there was some sort connection between the lower zone and the upper "low pressure" zone in EE-3 (from the casing shoe at 10374 ft to about 10900 ft). Available information ruled out a packer failure or other direct connection between these zones so the <span class="hlt">experiment</span> was continued as planned. Although not a major goal of the <span class="hlt">experiment</span>, it was hoped that fractures would propagate from EE-3 to EE-2, so hydraulic communication could be established between the two wells, however this did not occur.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_5");'>5</a></li> <li><a href="#" onclick='return showDiv("page_6");'>6</a></li> <li class="active"><span>7</span></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_7 --> <div id="page_8" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_6");'>6</a></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li class="active"><span>8</span></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="141"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/21410815','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/21410815"><span id="translatedtitle">Neutrino <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>McKeown, R. D.</p> <p>2010-08-04</p> <p>Recent studies of neutrino oscillations have established the existence of finite neutrino masses and mixing between generations of neutrinos. The combined results from studies of atmospheric neutrinos, solar neutrinos, reactor antineutrinos and neutrinos produced at accelerators paint an intriguing picture that clearly requires modification of the standard model of particle physics. These results also provide clear motivation for future neutrino oscillation <span class="hlt">experiments</span> as well as searches for direct neutrino mass and nuclear double-beta decay. I will discuss the program of new neutrino oscillation <span class="hlt">experiments</span> aimed at completing our knowledge of the neutrino mixing matrix.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/10110043','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/10110043"><span id="translatedtitle">Electromagnetic <span class="hlt">hysteretic</span> response calculation for superconductors in demagnetizing geometries</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Koo, L.S.; Telschow, K.L.</p> <p>1994-12-31</p> <p>A method has been outlined for calculating the flux front profile for a superconducting sample in either a uniform or nonuniform applied magnetic field possessing azimuthal symmetry. This technique relies upon finding a surface with zero vector potential. This surface is determined by simple integration of its derivative with respect to the external field, found by resolving a linear integral equation of the first kind. Measurement induced voltages and the entire hysteresis loop response can be found by extension of the ZFC magnetization response with increasing external field. Other experimentally measured quantities relating to the critical state can be calculated directly from the hysteresis loop if the time dependence of the external field is known. The technique shown in this report for solving the critical state model in the Bean approximation can be extended to field-dependent critical currents and other azimuthally symmetrical external fields. This work is presently in progress.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/321014','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/321014"><span id="translatedtitle">Modeling the effects of torsional stress on <span class="hlt">hysteretic</span> magnetization</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Sablik, M.J.; Jiles, D.C.</p> <p>1999-01-01</p> <p>Opposite torques applied axially to a polycrystalline ferromagnetic rod result in tensile and compressive stresses acting perpendicularly at the rod surface at 45{degree} to the rod axis. These stresses affect the magnetization of the rod when a magnetic field is applied parallel to the rod axis. It is shown how one can formulate the magnetomechanical hysteresis model so as to treat this special case of biaxial stress and take into account the effect of opposite torques on the magnetic properties of the rod. Variation of hysteresis parameters such as coercive field, remanent flux density, differential permeability at the coercive field, and hysteresis loss as a function of applied torque are determined from the model. In the model, the torque is applied first and then the field is cycled to give hysteresis loops. It is found that the torque dependence of the magnetic properties is different, depending on what is chosen for H{sub max}, the maximum value of the applied magnetic field H. The best parameter to use for tracking the torque is found to be H{sub c} at saturation or near saturation, since that parameter shows an almost linear decrease with the applied torque.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2016PhRvE..94b2201P&link_type=ABSTRACT','NASAADS'); return false;" href="http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2016PhRvE..94b2201P&link_type=ABSTRACT"><span id="translatedtitle">Ultrasensitive <span class="hlt">hysteretic</span> force sensing with parametric nonlinear oscillators</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Papariello, Luca; Zilberberg, Oded; Eichler, Alexander; Chitra, R.</p> <p>2016-08-01</p> <p>We propose a method for linear detection of weak forces using parametrically driven nonlinear resonators. The method is based on a peculiar feature in the response of the resonator to a near resonant periodic external force. This feature stems from a complex interplay among the parametric drive, external force, and nonlinearities. For weak parametric drive, the response exhibits the standard Duffing-like single jump hysteresis. For stronger drive amplitudes, we find a qualitatively new double jump hysteresis which arises from stable solutions generated by the cubic Duffing nonlinearity. The additional jump exists only if the external force is present and the frequency at which it occurs depends linearly on the amplitude of the external force, permitting a straightforward ultrasensitive detection of weak forces. With state-of-the-art nanomechanical resonators, our scheme should permit force detection in the attonewton range.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2002JMMM..242.1234I','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2002JMMM..242.1234I"><span id="translatedtitle">Advanced characterization of <span class="hlt">hysteretic</span> materials by object-oriented software</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Ionita, V.; Gavrila, H.</p> <p>2002-04-01</p> <p>A new object-oriented software, which is dedicated for the characterization of magnetic materials, including the hysteresis effect, is presented. The product allows the development and utilization of an information base, containing experimental and numerical data related to the magnetic material behaviour. The materials may be modelled with different hysteresis models (Preisach, Jiles-Atherton, etc.).</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012TSICE..47..310M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012TSICE..47..310M"><span id="translatedtitle">Identification of Backlash Type <span class="hlt">Hysteretic</span> Systems Based on Particle Filter</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Masuda, Tetsuya; Sugie, Toshiharu</p> <p></p> <p>This paper considers the system identification problem for hysteresis systems. This problem plays an important role in achieving better control performance, because many actuators have hysteresis property. This paper proposes a method to identify linear dynamical systems having input hysteresis property of backlash type. The method is based on particle filter, which is known for its applicability to a wide class of nonlinear systems. Numerical examples are given to demonstrate the effectiveness of the proposed method in detail. Furthermore, experimental validation is performed for a DC servo motor system.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2011APS..MARZ23010L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2011APS..MARZ23010L"><span id="translatedtitle">Superconducting-to-Normal State Switching <span class="hlt">Experiments</span> using Graphene-based Josephson Junctions</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Lambert, Joseph; Carabello, Steven; Ramos, Roberto</p> <p>2011-03-01</p> <p>We report results of ongoing superconductor-to-normal state switching <span class="hlt">experiments</span> using graphene-based Josephson junctions. These devices consist of a single-layer graphene flake contacted by two superconducting parallel leads separated by a few hundred nanometers. Through the proximity effect, the superconducting state is induced in the graphene region below the leads and the Josephson supercurrent is mediated through the normal graphene region by multiple Andreev reflections. The Josephson effect has been firmly demonstrated in these devices, where supercurrents in the <span class="hlt">hysteretic</span> current-voltage characteristic, Shapiro steps, the Fraunhofer-like diffraction pattern in the critical current versus external magnetic field, and the current-phase relationship have been observed. We report on work in progress, in measuring I-V characteristics, thermal activation and microwave resonant activation in graphene-based junctions, at various temperatures below 1 Kelvin. We modulate the density of charge carriers using a back-gate voltage, which tunes the critical current. This provides another knob for studying these state switching properties.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19900016849','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19900016849"><span id="translatedtitle">Soil <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Hutcheson, Linton; Butler, Todd; Smith, Mike; Cline, Charles; Scruggs, Steve; Zakhia, Nadim</p> <p>1987-01-01</p> <p>An experimental procedure was devised to investigate the effects of the lunar environment on the physical properties of simulated lunar soil. The test equipment and materials used consisted of a vacuum chamber, direct shear tester, static penetrometer, and fine grained basalt as the simulant. The vacuum chamber provides a medium for applying the environmental conditions to the soil <span class="hlt">experiment</span> with the exception of gravity. The shear strength parameters are determined by the direct shear test. Strength parameters and the resistance of soil penetration by static loading will be investigated by the use of a static cone penetrometer. In order to conduct a soil <span class="hlt">experiment</span> without going to the moon, a suitable lunar simulant must be selected. This simulant must resemble lunar soil in both composition and particle size. The soil that most resembles actual lunar soil is basalt. The soil parameters, as determined by the testing apparatus, will be used as design criteria for lunar soil engagement equipment.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016AIPC.1743e0001A','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016AIPC.1743e0001A"><span id="translatedtitle">XMASS <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Abe, Ko</p> <p>2016-06-01</p> <p>XMASS is a single phase liquid xenon scintillator detector. The project is designed for multi purposes, dark matter, neutrinoless double beta decay and 7Be/pp solar neutrino. As the first step of project, XMASS-I detector with 832kg sensitive volume started operation from Dec. 2010. In this paper, recent obtained physics results from commissioning data, refurbishment of detector and future step of <span class="hlt">experiment</span> are presented.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/1040853','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/1040853"><span id="translatedtitle">SANE <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>H. Baghdasaryan, SANE Collaboration</p> <p>2012-04-01</p> <p>The Spin Asymmetries of the Nucleon <span class="hlt">Experiment</span> (SANE) is a measurement of parallel and near-perpendicular double spin asymmetries in an inclusive electron scattering. The main goal of the <span class="hlt">experiment</span> was to measure A{sub {parallel}} and A{sub 80} and extract the spin asymmetries of the proton A{sub 1}{sup p}, A{sub 2}{sup p} and spin structure functions g{sub 1}{sup p} and g{sub 2}{sup p}. Using the Thomas Jefferson National Accelerator Facility's polarized electron beam and the University of Virginia's polarized frozen ammonia ({sup 14}NH{sub 3}) target in Hall C, the <span class="hlt">experiment</span> ran in 2009, collecting data in a Q{sup 2} region from 2.5 to 6.5 GeV{sup 2} and between Bjorken x of 0.3 to 0.8. Particle detection was accomplished using the Big Electron Telescope Array (BETA), a novel non-magnetic detector. This talk will address the progress of the analysis designed to extract the proton spin asymmetries and structure functions. Preliminary results will be presented.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=20000024741&hterms=sf6&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D50%26Ntt%3Dsf6','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=20000024741&hterms=sf6&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D50%26Ntt%3Dsf6"><span id="translatedtitle">Transport <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Hall, Timothy M.; Wuebbles, Donald J.; Boering, Kristie A.; Eckman, Richard S.; Lerner, Jean; Plumb, R. Alan; Rind, David H.; Rinsland, Curtis P.; Waugh, Darryn W.; Wei, Chu-Feng</p> <p>1999-01-01</p> <p>MM II defined a series of <span class="hlt">experiments</span> to better understand and characterize model transport and to assess the realism of this transport by comparison to observations. Measurements from aircraft, balloon, and satellite, not yet available at the time of MM I [Prather and Remsberg, 1993], provide new and stringent constraints on model transport, and address the limits of our transport modeling abilities. Simulations of the idealized tracers the age spectrum, and propagating boundary conditions, and conserved HSCT-like emissions probe the relative roles of different model transport mechanisms, while simulations of SF6 and C02 make the connection to observations. Some of the tracers are related, and transport diagnostics such as the mean age can be derived from more than one of the <span class="hlt">experiments</span> for comparison to observations. The goals of the transport <span class="hlt">experiments</span> are: (1) To isolate the effects of transport in models from other processes; (2) To assess model transport for realistic tracers (such as SF6 and C02) for comparison to observations; (3) To use certain idealized tracers to isolate model mechanisms and relationships to atmospheric chemical perturbations; (4) To identify strengths and weaknesses of the treatment of transport processes in the models; (5) To relate evaluated shortcomings to aspects of model formulation. The following section are included:Executive Summary, Introduction, Age Spectrum, Observation, Tropical Transport in Models, Global Mean Age in Models, Source-Transport Covariance, HSCT "ANOY" Tracer Distributions, and Summary and Conclusions.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=20000024742&hterms=tie&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D60%26Ntt%3Dtie','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=20000024742&hterms=tie&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D60%26Ntt%3Dtie"><span id="translatedtitle">Chemistry <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Brasseur, Guy; Remsberg, Ellis; Purcell, Patrick; Bhatt, Praful; Sage, Karen H.; Brown, Donald E.; Scott, Courtney J.; Ko, Malcolm K. W.; Tie, Xue-Xi; Huang, Theresa</p> <p>1999-01-01</p> <p>The purpose of the chemistry component of the model comparison is to assess to what extent differences in the formulation of chemical processes explain the variance between model results. Observed concentrations of chemical compounds are used to estimate to what degree the various models represent realistic situations. For readability, the materials for the chemistry <span class="hlt">experiment</span> are reported in three separate sections. This section discussed the data used to evaluate the models in their simulation of the source gases and the Nitrogen compounds (NO(y)) and Chlorine compounds (Cl(y)) species.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=MSFC-7026014&hterms=sleep+quality&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3Dsleep%2Bquality','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=MSFC-7026014&hterms=sleep+quality&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3Dsleep%2Bquality"><span id="translatedtitle">Sleep Monitoring <span class="hlt">Experiment</span> - Skylab <span class="hlt">Experiment</span> M133</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>1970-01-01</p> <p>This 1970 photograph shows equipment for the Skylab's Sleep Monitoring <span class="hlt">Experiment</span> (M133), a medical evaluation designed to objectively determine the amount and quality of crewmembers' inflight sleep. The <span class="hlt">experiment</span> monitored and recorded electroencephalographic (EEG) and electrooculographic (EOG) activity during astronauts' sleep periods. One of the astronauts was selected for this <span class="hlt">experiment</span> and wore a fitted cap during his sleep periods. The Marshall Space Flight Center had program management responsibility for the development of Skylab hardware and <span class="hlt">experiments</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=holographic&pg=3&id=EJ401349','ERIC'); return false;" href="http://eric.ed.gov/?q=holographic&pg=3&id=EJ401349"><span id="translatedtitle">Notes on <span class="hlt">Experiments</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Physics Education, 1989</p> <p>1989-01-01</p> <p>Described are three physics <span class="hlt">experiments</span>: (1) "Holographic Prism"; (2) "Teaching about Energy with the Gravicar"; and (3) "The Coherer." In each <span class="hlt">experiment</span>, a brief description of the <span class="hlt">experiment</span> devised is provided with diagrams and references. (YP)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=Radioactivity&pg=5&id=EJ309004','ERIC'); return false;" href="http://eric.ed.gov/?q=Radioactivity&pg=5&id=EJ309004"><span id="translatedtitle">Notes on <span class="hlt">Experiments</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Physics Education, 1984</p> <p>1984-01-01</p> <p>Describes: (1) <span class="hlt">experiments</span> using a simple phonocardiograph; (2) radioactivity <span class="hlt">experiments</span> involving a VELA used as a ratemeter; (3) a 25cm continuously operating Foucault pendulum; and (4) camera control of <span class="hlt">experiments</span>. Descriptions of equipment needed are provided when applicable. (JN)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=ia&pg=4&id=EJ924422','ERIC'); return false;" href="http://eric.ed.gov/?q=ia&pg=4&id=EJ924422"><span id="translatedtitle">The User <span class="hlt">Experience</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Schmidt, Aaron</p> <p>2010-01-01</p> <p>User <span class="hlt">experience</span> (UX) is about arranging the elements of a product or service to optimize how people will interact with it. In this article, the author talks about the importance of user <span class="hlt">experience</span> and discusses the design of user <span class="hlt">experiences</span> in libraries. He first looks at what UX is. Then he describes three kinds of user <span class="hlt">experience</span> design: (1)…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19820011409&hterms=Bowden&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3DBowden','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19820011409&hterms=Bowden&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3DBowden"><span id="translatedtitle">Structural Assembly Demonstration <span class="hlt">Experiment</span> (SADE) <span class="hlt">experiment</span> design</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Akin, D. L.; Bowden, M. L.</p> <p>1982-01-01</p> <p>The Structural Assembly Demonstration <span class="hlt">Experiment</span> concept is to erect a hybrid deployed/assembled structure as an early space <span class="hlt">experiment</span> in large space structures technology. The basic objectives can be broken down into three generic areas: (1) by performing assembly tasks both in space and in neutral buoyancy simulation, a mathematical basis will be found for the validity conditions of neutral buoyancy, thus enhancing the utility of water as a medium for simulation of weightlessness; (2) a data base will be established describing the capabilities and limitations of EVA crewmembers, including effects of such things as hardware size and crew restraints; and (3) <span class="hlt">experience</span> of the M.I.T. Space Systems Lab in neutral buoyancy simulation of large space structures assembly indicates that the assembly procedure may create the largest loads that a structure will <span class="hlt">experience</span> during its lifetime. Data obtained from the <span class="hlt">experiment</span> will help establish an accurate loading model to aid designers of future space structures.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=MSFC-0300101&hterms=biomedical&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D80%26Ntt%3Dbiomedical','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=MSFC-0300101&hterms=biomedical&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D80%26Ntt%3Dbiomedical"><span id="translatedtitle">Commercial Biomedical <span class="hlt">Experiments</span> Payload</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>2003-01-01</p> <p><span class="hlt">Experiments</span> to seek solutions for a range of biomedical issues are at the heart of several investigations that will be hosted by the Commercial Instrumentation Technology Associates (ITA), Inc. The biomedical <span class="hlt">experiments</span> CIBX-2 payload is unique, encompassing more than 20 separate <span class="hlt">experiments</span> including cancer research, commercial <span class="hlt">experiments</span>, and student hands-on <span class="hlt">experiments</span> from 10 schools as part of ITA's ongoing University Among the stars program. Here, Astronaut Story Musgrave activates the CMIX-5 (Commercial MDA ITA <span class="hlt">experiment</span>) payload in the Space Shuttle mid deck during the STS-80 mission in 1996 which is similar to CIBX-2. The <span class="hlt">experiments</span> are sponsored by NASA's Space Product Development Program (SPD).</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=MSFC-0300085&hterms=biomedical&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D90%26Ntt%3Dbiomedical','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=MSFC-0300085&hterms=biomedical&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D90%26Ntt%3Dbiomedical"><span id="translatedtitle">Commercial Biomedical <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>2003-01-01</p> <p><span class="hlt">Experiments</span> to seek solutions for a range of biomedical issues are at the heart of several investigations that will be hosted by the Commercial Instrumentation Technology Associates (ITA), Inc. Biomedical <span class="hlt">Experiments</span> (CIBX-2) payload. CIBX-2 is unique, encompassing more than 20 separate <span class="hlt">experiments</span> including cancer research, commercial <span class="hlt">experiments</span>, and student hands-on <span class="hlt">experiments</span> from 10 schools as part of ITA's ongoing University Among the Stars program. Valerie Cassanto of ITA checks the Canadian Protein Crystallization <span class="hlt">Experiment</span> (CAPE) carried by STS-86 to Mir in 1997. The <span class="hlt">experiments</span> are sponsored by NASA's Space Product Development Program (SPD).</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19930019515','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19930019515"><span id="translatedtitle">Adaptive Structures Flight <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Martin, Maurice</p> <p>1992-01-01</p> <p>The topics are presented in viewgraph form and include the following: adaptive structures flight <span class="hlt">experiments</span>; enhanced resolution using active vibration suppression; Advanced Controls Technology <span class="hlt">Experiment</span> (ACTEX); ACTEX program status; ACTEX-2; ACTEX-2 program status; modular control patch; STRV-1b Cryocooler Vibration Suppression <span class="hlt">Experiment</span>; STRV-1b program status; Precision Optical Bench <span class="hlt">Experiment</span> (PROBE); Clementine Spacecraft Configuration; TECHSAT all-composite spacecraft; Inexpensive Structures and Materials Flight <span class="hlt">Experiment</span> (INFLEX); and INFLEX program status.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_6");'>6</a></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li class="active"><span>8</span></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_8 --> <div id="page_9" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li class="active"><span>9</span></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="161"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1992feti.procQ....M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1992feti.procQ....M"><span id="translatedtitle">Adaptive structures flight <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Martin, Maurice</p> <p></p> <p>The topics are presented in viewgraph form and include the following: adaptive structures flight <span class="hlt">experiments</span>; enhanced resolution using active vibration suppression; Advanced Controls Technology <span class="hlt">Experiment</span> (ACTEX); ACTEX program status; ACTEX-2; ACTEX-2 program status; modular control patch; STRV-1b Cryocooler Vibration Suppression <span class="hlt">Experiment</span>; STRV-1b program status; Precision Optical Bench <span class="hlt">Experiment</span> (PROBE); Clementine Spacecraft Configuration; TECHSAT all-composite spacecraft; Inexpensive Structures and Materials Flight <span class="hlt">Experiment</span> (INFLEX); and INFLEX program status.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19730013034&hterms=biologic&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3Dbiologic','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19730013034&hterms=biologic&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3Dbiologic"><span id="translatedtitle">Biomedical <span class="hlt">experiments</span>. Part A: Biostack <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Buecker, H.; Horneck, G.; Reinholz, E.; Scheuermann, W.; Ruether, W.; Graul, E. H.; Planel, H.; Soleilhavoup, J. P.; Cuer, P.; Kaiser, R.</p> <p>1972-01-01</p> <p>The biostack <span class="hlt">experiment</span> is described which was designed to study the biologic effects of individual heavy nuclei of galactic cosmic radiation during space flight outside the magnetosphere of the earth. Specifically, the biostack <span class="hlt">experiment</span> was designed to promote research on the effects of high energy/high Z particles of galactic cosmic radiation on a broad spectrum of biologic systems, from the molecular to the highly organized and developed forms of life. The <span class="hlt">experiment</span> was considered unique and scientifically meritorious because of its potential yield of information - currently unavailable on earth - on the interaction of biologic systems with the heavy particles of galactic cosmic radiation.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=Atmospheric+AND+pressure&pg=3&id=EJ270249','ERIC'); return false;" href="http://eric.ed.gov/?q=Atmospheric+AND+pressure&pg=3&id=EJ270249"><span id="translatedtitle"><span class="hlt">Experiments</span> and Calculations.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Siddons, J. C.</p> <p>1982-01-01</p> <p>Discusses several science <span class="hlt">experiments</span>/activities and their associated measurements. These include a simple projectile activity, cartesian diver (used to measure altitude and atmospheric pressure), <span class="hlt">experiment</span> demonstrating atmospheric pressure, and activities using a stroboscope, and electrometer. (JN)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20150020824','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20150020824"><span id="translatedtitle">Observing System Simulation <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Prive, Nikki</p> <p>2015-01-01</p> <p>This presentation gives an overview of Observing System Simulation <span class="hlt">Experiments</span> (OSSEs). The components of an OSSE are described, along with discussion of the process for validating, calibrating, and performing <span class="hlt">experiments</span>. a.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=delusion&pg=5&id=EJ192169','ERIC'); return false;" href="http://eric.ed.gov/?q=delusion&pg=5&id=EJ192169"><span id="translatedtitle">Literature or <span class="hlt">Experience</span>?</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Robinson, Dennis</p> <p>1978-01-01</p> <p>Shows that the need to choose between literature-centered or <span class="hlt">experience</span>-centered English instruction is a delusion, because instruction in literature also adds to the child's <span class="hlt">experience</span> of language. (RL)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=refractive&pg=5&id=EJ293757','ERIC'); return false;" href="http://eric.ed.gov/?q=refractive&pg=5&id=EJ293757"><span id="translatedtitle">Notes on <span class="hlt">Experiments</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Physics Education, 1984</p> <p>1984-01-01</p> <p>Describes apparatus needed and instructions for conducting four <span class="hlt">experiments</span>. <span class="hlt">Experiments</span> focus on light waves, measurement of contact resistance, demonstration of longitudinal waves, and a simple method of measuring the refractive indices of transparent plates and liquids. (JM)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=conductivity&pg=7&id=EJ023092','ERIC'); return false;" href="http://eric.ed.gov/?q=conductivity&pg=7&id=EJ023092"><span id="translatedtitle"><span class="hlt">Experiments</span> in Magnetohydrodynamics</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Rayner, J. P.</p> <p>1970-01-01</p> <p>Describes three student <span class="hlt">experiments</span> in magnetohydrodynamics (MHD). In these <span class="hlt">experiments</span>, it was found that the electrical conductivity of the local water supply was sufficient to demonstrate effectively some of the features of MHD flowmeters, generators, and pumps. (LC)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19840009143','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19840009143"><span id="translatedtitle">STEP <span class="hlt">Experiment</span> Requirements</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Brumfield, M. L. (Compiler)</p> <p>1984-01-01</p> <p>A plan to develop a space technology <span class="hlt">experiments</span> platform (STEP) was examined. NASA Langley Research Center held a STEP <span class="hlt">Experiment</span> Requirements Workshop on June 29 and 30 and July 1, 1983, at which <span class="hlt">experiment</span> proposers were invited to present more detailed information on their <span class="hlt">experiment</span> concept and requirements. A feasibility and preliminary definition study was conducted and the preliminary definition of STEP capabilities and <span class="hlt">experiment</span> concepts and expected requirements for support services are presented. The preliminary definition of STEP capabilities based on detailed review of potential <span class="hlt">experiment</span> requirements is investigated. Topics discussed include: Shuttle on-orbit dynamics; effects of the space environment on damping materials; erectable beam <span class="hlt">experiment</span>; technology for development of very large solar array deployers; thermal energy management process <span class="hlt">experiment</span>; photovoltaic concentrater pointing dynamics and plasma interactions; vibration isolation technology; flight tests of a synthetic aperture radar antenna with use of STEP.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=physics+AND+rainbows&pg=2&id=EJ298645','ERIC'); return false;" href="http://eric.ed.gov/?q=physics+AND+rainbows&pg=2&id=EJ298645"><span id="translatedtitle">More <span class="hlt">Experiments</span> and Calculations.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Siddons, J. C.</p> <p>1984-01-01</p> <p>Describes two <span class="hlt">experiments</span> that illustrate basic ideas but would be difficult to carry out. Also presents activities and <span class="hlt">experiments</span> on rainbow cups, electrical charges, electrophorus calculation, pulse electrometer, a skidding car, and on the Oersted effect. (JN)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19900008646','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19900008646"><span id="translatedtitle">The ITALSAT <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Paraboni, A.</p> <p>1989-01-01</p> <p>Some information is given on the ITALSAT millimetric waves propagation <span class="hlt">experiment</span>, which is to be conducted with the ITALSAT satellite, whose launch is foreseen for the middle of 1990. The purpose of the <span class="hlt">experiment</span> is one of <span class="hlt">experimenting</span> with advanced technologies and techniques employing the 20/30 GHz bands in wideband telecommunications. Among the most qualified features of this system are the multispot antenna and the exchange function performed directly onboard. Details of the <span class="hlt">experiment</span> are given.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4844768','PMC'); return false;" href="http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4844768"><span id="translatedtitle">The <span class="hlt">Experiment</span> Factory: Standardizing Behavioral <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Sochat, Vanessa V.; Eisenberg, Ian W.; Enkavi, A. Zeynep; Li, Jamie; Bissett, Patrick G.; Poldrack, Russell A.</p> <p>2016-01-01</p> <p>The administration of behavioral and experimental paradigms for psychology research is hindered by lack of a coordinated effort to develop and deploy standardized paradigms. While several frameworks (Mason and Suri, 2011; McDonnell et al., 2012; de Leeuw, 2015; Lange et al., 2015) have provided infrastructure and methods for individual research groups to develop paradigms, missing is a coordinated effort to develop paradigms linked with a system to easily deploy them. This disorganization leads to redundancy in development, divergent implementations of conceptually identical tasks, disorganized and error-prone code lacking documentation, and difficulty in replication. The ongoing reproducibility crisis in psychology and neuroscience research (Baker, 2015; Open Science Collaboration, 2015) highlights the urgency of this challenge: reproducible research in behavioral psychology is conditional on deployment of equivalent <span class="hlt">experiments</span>. A large, accessible repository of <span class="hlt">experiments</span> for researchers to develop collaboratively is most efficiently accomplished through an open source framework. Here we present the <span class="hlt">Experiment</span> Factory, an open source framework for the development and deployment of web-based <span class="hlt">experiments</span>. The modular infrastructure includes <span class="hlt">experiments</span>, virtual machines for local or cloud deployment, and an application to drive these components and provide developers with functions and tools for further extension. We release this infrastructure with a deployment (http://www.expfactory.org) that researchers are currently using to run a set of over 80 standardized web-based <span class="hlt">experiments</span> on Amazon Mechanical Turk. By providing open source tools for both deployment and development, this novel infrastructure holds promise to bring reproducibility to the administration of <span class="hlt">experiments</span>, and accelerate scientific progress by providing a shared community resource of psychological paradigms. PMID:27199843</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/27199843','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/27199843"><span id="translatedtitle">The <span class="hlt">Experiment</span> Factory: Standardizing Behavioral <span class="hlt">Experiments</span>.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Sochat, Vanessa V; Eisenberg, Ian W; Enkavi, A Zeynep; Li, Jamie; Bissett, Patrick G; Poldrack, Russell A</p> <p>2016-01-01</p> <p>The administration of behavioral and experimental paradigms for psychology research is hindered by lack of a coordinated effort to develop and deploy standardized paradigms. While several frameworks (Mason and Suri, 2011; McDonnell et al., 2012; de Leeuw, 2015; Lange et al., 2015) have provided infrastructure and methods for individual research groups to develop paradigms, missing is a coordinated effort to develop paradigms linked with a system to easily deploy them. This disorganization leads to redundancy in development, divergent implementations of conceptually identical tasks, disorganized and error-prone code lacking documentation, and difficulty in replication. The ongoing reproducibility crisis in psychology and neuroscience research (Baker, 2015; Open Science Collaboration, 2015) highlights the urgency of this challenge: reproducible research in behavioral psychology is conditional on deployment of equivalent <span class="hlt">experiments</span>. A large, accessible repository of <span class="hlt">experiments</span> for researchers to develop collaboratively is most efficiently accomplished through an open source framework. Here we present the <span class="hlt">Experiment</span> Factory, an open source framework for the development and deployment of web-based <span class="hlt">experiments</span>. The modular infrastructure includes <span class="hlt">experiments</span>, virtual machines for local or cloud deployment, and an application to drive these components and provide developers with functions and tools for further extension. We release this infrastructure with a deployment (http://www.expfactory.org) that researchers are currently using to run a set of over 80 standardized web-based <span class="hlt">experiments</span> on Amazon Mechanical Turk. By providing open source tools for both deployment and development, this novel infrastructure holds promise to bring reproducibility to the administration of <span class="hlt">experiments</span>, and accelerate scientific progress by providing a shared community resource of psychological paradigms. PMID:27199843</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=videos+AND+human+AND+experiments&pg=4&id=EJ437399','ERIC'); return false;" href="http://eric.ed.gov/?q=videos+AND+human+AND+experiments&pg=4&id=EJ437399"><span id="translatedtitle">The Concerned Observer <span class="hlt">Experiment</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Rabiger, Michael</p> <p>1991-01-01</p> <p>Describes a classroom <span class="hlt">experiment</span>--the "concerned observer" <span class="hlt">experiment</span>--for production students that dramatizes basic film language by relating it to several levels of human observation. Details the <span class="hlt">experiment</span>'s three levels, and concludes that film language mimics wide-ranging states of human emotion and ideological persuasion. (PRA)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=phase+AND+matching&pg=7&id=ED385728','ERIC'); return false;" href="http://eric.ed.gov/?q=phase+AND+matching&pg=7&id=ED385728"><span id="translatedtitle">Rethinking Work <span class="hlt">Experience</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Miller, Andrew; And Others</p> <p></p> <p>This book on work <span class="hlt">experience</span> programs in the United Kingdom begins with "History and Policy Context" (Ian Jamieson, Andrew Miller), which reviews the development of work <span class="hlt">experience</span> in the United Kingdom, considers the current policy framework, and poses possible future scenarios. "The Concept of Work <span class="hlt">Experience</span>" (A. G. Watts) explores the concept…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19740006473','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19740006473"><span id="translatedtitle">NASTRAN: Users' <span class="hlt">experiences</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>1973-01-01</p> <p>The proceedings of a conference on NASA Structural Analysis (NASTRAN) to analyze the <span class="hlt">experiences</span> of users of the program are presented. The subjects discussed include the following: (1) statics and buckling, (2) vibrations and dynamics, (3) substructing, (4) new capability, (5) user's <span class="hlt">experience</span>, and (6) system <span class="hlt">experience</span>. Specific applications of NASTRAN to spacecraft, aircraft, nuclear power plants, and materials tests are reported.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19750036624&hterms=aves&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D60%26Ntt%3Daves','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19750036624&hterms=aves&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D60%26Ntt%3Daves"><span id="translatedtitle">Atmospheric variability <span class="hlt">experiment</span> /AVE II/ pilot <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Turner, R. E.; Scroggins, J. R.</p> <p>1974-01-01</p> <p>The Atmospheric Variability <span class="hlt">Experiment</span> (AVE II) was conducted in May 1974. Rawinsonde releases were made at 54 upper-air stations in two thirds of the eastern U.S. at 3-hr intervals for a 24-hr period. Radar data were obtained from 11 stations located near the center of the observational area, and as many data as possible were collected from the Nimbus 5, NOAA 2, ATS-3, and DMSP satellites. The present paper provides an overview of the <span class="hlt">experiment</span> and describes how the user community can obtain copies of the data.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012APS..MARX30011R','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012APS..MARX30011R"><span id="translatedtitle">Popper's Thought <span class="hlt">Experiment</span> Reinvestigated</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Richardson, Chris; Dowling, Jonathan</p> <p>2012-02-01</p> <p>Karl Popper posed an interesting thought <span class="hlt">experiment</span> in 1934. With it, he meant to question the completeness of quantum mechanics. He claimed that the notion of quantum entanglement leads to absurd scenarios that cannot be true in real life and that an implementation of his thought <span class="hlt">experiment</span> would not give the results that QM predicts. Unfortunately for Popper, it has taken until recently to perform <span class="hlt">experiments</span> that test his claims. The results of the <span class="hlt">experiments</span> do not refute QM as Popper predicted, but neither do they confirm what Popper claimed QM predicted. Kim and Shih implemented Popper's thought <span class="hlt">experiment</span> in the lab. The results of the <span class="hlt">experiment</span> are not clear and have instigated many interpretations of the results. The results show some correlation between entangled photons, but not in the way that Popper thought, nor in the way a simple application of QM might predict. A ghost-imaging <span class="hlt">experiment</span> by Strekalov, et al. sheds light on the physics behind Popper's thought <span class="hlt">experiment</span>, but does not try to directly test it. I will build the physics of Popper's thought <span class="hlt">experiment</span> from the ground up and show how the results of both of these <span class="hlt">experiments</span> agree with each other and the theory of QM, but disprove Popper.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1934613','PMC'); return false;" href="http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1934613"><span id="translatedtitle">The <span class="hlt">Experience</span> of Emotion</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Barrett, Lisa Feldman; Mesquita, Batja; Ochsner, Kevin N.; Gross, James J.</p> <p>2007-01-01</p> <p><span class="hlt">Experiences</span> of emotion are content-rich events that emerge at the level of psychological description, but must be causally constituted by neurobiological processes. This chapter outlines an emerging scientific agenda for understanding what these <span class="hlt">experiences</span> feel like and how they arise. We review the available answers to what is felt (i.e., the content that makes up an <span class="hlt">experience</span> of emotion) and how neurobiological processes instantiate these properties of <span class="hlt">experience</span>. These answers are then integrated into a broad framework that describes, in psychological terms, how the <span class="hlt">experience</span> of emotion emerges from more basic processes. We then discuss the role of such <span class="hlt">experiences</span> in the economy of the mind and behavior. PMID:17002554</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/7280578','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/7280578"><span id="translatedtitle">Mystical <span class="hlt">experience</span> and schizophrenia.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Buckley, P</p> <p>1981-01-01</p> <p>Autobiographical accounts of acute mystical <span class="hlt">experience</span> and schizophrenia are compared in order to examine the similarities between the two states. The appearance of a powerful sense of noesis, heightening of perception, feelings of communion with the "divine," and exultation may be common to both. The disruption of thought seen in the acute psychoses is not a component of the accounts of mystical <span class="hlt">experience</span> reviewed by the author, and auditory hallucinations are less common than visual hallucinations in the mystical state. The ease with which elements of the acute mystical <span class="hlt">experience</span> can be induced in possession cults or in an experimental situation suggests that the capacity for such an altered state <span class="hlt">experience</span> may be latently present in many people. It is postulated that there is a limited repertoire of response within the nervous system for altered state <span class="hlt">experiences</span> such as acute psychosis and mystical <span class="hlt">experience</span>, even though the precipitants and etiology may be quite different. PMID:7280578</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19910000186&hterms=animal+cells&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D60%26Ntt%3Danimal%2Bcells','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19910000186&hterms=animal+cells&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D60%26Ntt%3Danimal%2Bcells"><span id="translatedtitle">Microgravity <span class="hlt">Experiments</span> On Animals</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Dalton, B. P.; Leon, H.; Hogan, R.; Clarke, B.; Tollinger, D.</p> <p>1991-01-01</p> <p>Paper describes <span class="hlt">experiments</span> on animal subjects planned for Spacelab Life Sciences 1 mission. Laboratory equipment evaluated, and physiological <span class="hlt">experiments</span> performed. Represents first step in establishing technology for maintaining and manipulating rodents, nonhuman primates, amphibians, and plants during space flight without jeopardizing crew's environment. In addition, <span class="hlt">experiments</span> focus on effects of microgravity on cardiopulmonary, cardiovascular, and musculoskeletal systems; on regulation of volume of blood and production of red blood cells; and on calcium metabolism and gravity receptors.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li class="active"><span>9</span></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_9 --> <div id="page_10" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li class="active"><span>10</span></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="181"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2007MPLA...22.1893R','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2007MPLA...22.1893R"><span id="translatedtitle">Berkeley CMB <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Richards, P. L.</p> <p></p> <p>This paper describes the status of four CMB cosmology <span class="hlt">experiments</span> which are currently being developed by the Berkeley group. These include the APEXSZ and South Pole Telescope searches for clusters of galaxies using the Sunyaev-Zeldovich effect and the Polar Bear and EBEX CMB polarization anisotropy <span class="hlt">experiments</span>. These <span class="hlt">experiments</span> exploit new detector technologies with Superconducting TES bolometers and frequency domain output multiplexing, which has been developed at Berkeley.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015AIPC.1666h0004W','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015AIPC.1666h0004W"><span id="translatedtitle">Future reactor <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Wen, Liangjian</p> <p>2015-07-01</p> <p>The non-zero neutrino mixing angle θ13 has been discovered and precisely measured by the current generation short-baseline reactor neutrino <span class="hlt">experiments</span>. It opens the gate of measuring the leptonic CP-violating phase and enables the neutrino mass ordering. The JUNO and RENO-50 proposals aim at resolving the neutrino mass ordering using reactors. The <span class="hlt">experiment</span> design, physics sensitivity, technical challenges as well as the progresses of those two proposed <span class="hlt">experiments</span> are reviewed in this paper.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19720007969','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19720007969"><span id="translatedtitle">Gyroscope relativity <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Decher, R.</p> <p>1971-01-01</p> <p>A gyroscope test of general relativity theory is proposed. The basic ideas and hardware concepts conceived by the investigators to implement the <span class="hlt">experiment</span> are discussed. The goal is to measure the extremely small relativistic precession of gyroscopes in an earth-orbiting satellite. The <span class="hlt">experiment</span> hardware (cryogenic gyroscopes, a telescope and superconducting circuits) is enclosed in a liquid helium dewar. The <span class="hlt">experiment</span> will operate in orbit for about one year.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/22490646','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/22490646"><span id="translatedtitle">Future reactor <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Wen, Liangjian</p> <p>2015-07-15</p> <p>The non-zero neutrino mixing angle θ{sub 13} has been discovered and precisely measured by the current generation short-baseline reactor neutrino <span class="hlt">experiments</span>. It opens the gate of measuring the leptonic CP-violating phase and enables the neutrino mass ordering. The JUNO and RENO-50 proposals aim at resolving the neutrino mass ordering using reactors. The <span class="hlt">experiment</span> design, physics sensitivity, technical challenges as well as the progresses of those two proposed <span class="hlt">experiments</span> are reviewed in this paper.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19900004167','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19900004167"><span id="translatedtitle">LDR structural <span class="hlt">experiment</span> definition</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Russell, R. A.</p> <p>1988-01-01</p> <p>A system study to develop the definition of a structural flight <span class="hlt">experiment</span> for a large precision segmented reflector on the Space Station was accomplished by the Boeing Aerospace Company for NASA's Langley Research Center. The objective of the study was to use a Large Deployable Reflector (LDR) baseline configuration as the basis for focusing an <span class="hlt">experiment</span> definition, so that the resulting accommodation requirements and interface constraints could be used as part of the mission requirements data base for Space Station. The primary objectives of the first <span class="hlt">experiment</span> are to construct the primary mirror support truss and to determine its structural and thermal characteristics. Addition of an optical bench, thermal shield and primary mirror segments, and alignment of the optical components, would occur on a second <span class="hlt">experiment</span>. The structure would then be moved to the payload point system for pointing, optical control, and scientific optical measurement for a third <span class="hlt">experiment</span>. <span class="hlt">Experiment</span> 1 will deploy the primary support truss while it is attached to the instrument module structure. The ability to adjust the mirror attachment points and to attach several dummy primary mirror segments with a robotic system will also be demonstrated. <span class="hlt">Experiment</span> 2 will be achieved by adding new components and equipment to <span class="hlt">experiment</span> one. <span class="hlt">Experiment</span> 3 will demonstrate advanced control strategies, active adjustment of the primary mirror alignment, and technologies associated with optical sensing.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19770026887&hterms=biomed&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3Dbiomed','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19770026887&hterms=biomed&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3Dbiomed"><span id="translatedtitle"><span class="hlt">Experiment</span> support system</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Shannon, A. V.</p> <p>1977-01-01</p> <p>The <span class="hlt">Experiment</span> Support System is a switchboard system with displays and controls. It routes electrical power to <span class="hlt">experiments</span> M092, M093, and M171 equipment; gaseous nitrogen to the Blood Pressure Measurement System; receives biomedical data from all related equipment; routes the conditioned data signals to the Airlock Module Telemetry System and also displays (in digital or analog from) portions of that data which the crewmen must see to complete the <span class="hlt">experiment</span> successfully. The <span class="hlt">Experiment</span> Support System is interfaced to the M131 control panel to transfer conditioned data to the Airlock Module Telemetry System.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=luminescence&id=EJ123386','ERIC'); return false;" href="http://eric.ed.gov/?q=luminescence&id=EJ123386"><span id="translatedtitle">Chemiluminescence: An Illuminating <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Gafney, Harry D.; Adamson, Arthur W.</p> <p>1975-01-01</p> <p>Describes an <span class="hlt">experiment</span> in which luminescence is observed during a reaction between sodium borohydride and trisbipyridalruthenium (III). Includes a discussion of the theory of chemiluminescence. (MLH)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19910048767&hterms=flight+sequence&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D90%26Ntt%3Dflight%2Bsequence','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19910048767&hterms=flight+sequence&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D90%26Ntt%3Dflight%2Bsequence"><span id="translatedtitle">Consort 3 flight <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Wessling, Francis C.; Maybee, George W.</p> <p>1991-01-01</p> <p>The third sounding rocket payload in the Consort program was launched from the White Sands Missile Range on May 16, 1990. It carried 12 <span class="hlt">experiments</span> designed to investigate materials processes in low gravity. All of the <span class="hlt">experiments</span> were reflights from the Consort 2 payload that was launched on November 1989 but failed to achieve microgravity because of a malfunction in the launch vehicle. Four national Centers for the Commercial Development of Space participated in the mission. The payload included five <span class="hlt">experiments</span> and two accelerometer systems that flew on Consort 1 and seven new <span class="hlt">experiments</span>, designed and developed since Consort 1. <span class="hlt">Experiments</span> from Consort 1 incorporated hardware modifications and changes in experimental parameters based on mission results. The new <span class="hlt">experiments</span> covered a variety of polymeric and biological investigations. A new power distribution and control system designed to provide discrete, computer-supervised, <span class="hlt">experiment</span> power monitoring and control was flight qualified on Consort 3. Consort 3 featured very late access (3-5 h before launch vs 27-30 h for Consort 1) for installation of sensitive biological specimens. The integrated payload and mission sequence of events are described. Changes in the Consort 1 <span class="hlt">experiments</span> are defined and the objectives, methods, and expectations for new <span class="hlt">experiments</span> are discussed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19900015849','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19900015849"><span id="translatedtitle">SEDS <span class="hlt">experiment</span> design definition</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Carroll, Joseph A.; Alexander, Charles M.; Oldson, John C.</p> <p>1990-01-01</p> <p>The Small Expendable-tether Deployment System (SEDS) was developed to design, build, integrate, fly, and safely deploy and release an expendable tether. A suitable concept for an on-orbit test of SEDS was developed. The following tasks were performed: (1) Define <span class="hlt">experiment</span> objectives and requirements; (2) Define <span class="hlt">experiment</span> concepts to reach those objectives; (3) Support NASA in <span class="hlt">experiment</span> concept selection and definition; (4) Perform analyses and tests of SEDS hardware; (5) Refine the selected SEDS <span class="hlt">experiment</span> concept; and (6) Support interactive SEDS system definition process. Results and conclusions are given.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/24294729','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/24294729"><span id="translatedtitle">[Near death <span class="hlt">experiences</span>].</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Rubia Vila, Francisco José</p> <p>2012-01-01</p> <p>Near Death <span class="hlt">Experiences</span> are those accounted by people who after being clinically dead return to life spontaneously or after reanimation. These <span class="hlt">experiences</span> have been used traditionally to support the belief in the existence of the soul and of life after death. However, today neuroscience tries to explain these <span class="hlt">experiences</span> from the scientific point of view, i.e. explaining them based on their brain substrates. Their resemblance to mystic <span class="hlt">experiences</span> and to altered states of consciousness seems to indicate that they may be produced by hyperactivity of limbic structures caused by anoxia or hypercapnia. PMID:24294729</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/23493966','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/23493966"><span id="translatedtitle">Exploring sensory neuroscience through <span class="hlt">experience</span> and <span class="hlt">experiment</span>.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Wyttenbach, Robert A</p> <p>2012-01-01</p> <p>Many phenomena that we take for granted are illusions - color and motion on a TV or computer monitor, for example, or the impression of space in a stereo music recording. Even the stable image that we perceive when looking directly at the real world is illusory. One of the important lessons from sensory neuroscience is that our perception of the world is constructed rather than received. Sensory illusions effectively capture student interest, but how do you then move on to substantive discussion of neuroscience? This article illustrates several illusions, attempts to connect them to neuroscience, and shows how students can explore and <span class="hlt">experiment</span> with them. Even when (as is often the case) there is no agreed-upon mechanistic explanation for an illusion, students can form hypotheses and test them by manipulating stimuli and measuring their effects. In effect, students can <span class="hlt">experiment</span> with illusions using themselves as subjects. PMID:23493966</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=silicon&pg=4&id=EJ748504','ERIC'); return false;" href="http://eric.ed.gov/?q=silicon&pg=4&id=EJ748504"><span id="translatedtitle">Real-World <span class="hlt">Experiences</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Borja, Rhea R.</p> <p>2006-01-01</p> <p>This article presents IISME, a U.S. program that can give educators a real-world <span class="hlt">experience</span> and that can deepen their subject-matter knowledge. It also presents the <span class="hlt">experiences</span> of some teachers who are into this program. IISME's summer-fellowship program started out with 40 teachers and 12 companies. The group's growth picked up in 2001, when it…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19740025748','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19740025748"><span id="translatedtitle">Corn blight watch <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>1974-01-01</p> <p>The corn blight problem is briefly described how the <span class="hlt">experiment</span> was organized and conducted, the effect of the blight on the 1971 crop, and some conclusions that may be drawn as a result of the <span class="hlt">experiment</span>. The information is based on preliminary reports of the Corn Blight Watch Steering Committee and incorporates much illustrative material conceived at Purdue University.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=apnea+AND+diving&id=EJ214953','ERIC'); return false;" href="http://eric.ed.gov/?q=apnea+AND+diving&id=EJ214953"><span id="translatedtitle">Human Simulated Diving <span class="hlt">Experiments</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Bruce, David S.; Speck, Dexter F.</p> <p>1979-01-01</p> <p>This report details several simulated divinq <span class="hlt">experiments</span> on the human. These are suitable for undergraduate or graduate laboratories in human or environmental physiology. The <span class="hlt">experiment</span> demonstrates that a diving reflex is precipitated by both facial cooling and apnea. (Author/RE)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=language+AND+projects&pg=7&id=EJ822296','ERIC'); return false;" href="http://eric.ed.gov/?q=language+AND+projects&pg=7&id=EJ822296"><span id="translatedtitle">Beyond the Practicum <span class="hlt">Experience</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Williams, Jessica</p> <p>2009-01-01</p> <p>The practicum is an important part of most TESL programmes; however, many novice teachers seek practical <span class="hlt">experiences</span> beyond the practicum as part of their preparation for entering the profession. Collaborative projects between language learners and pre-service language teachers can offer such valuable practical <span class="hlt">experiences</span> for both groups. The…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://files.eric.ed.gov/fulltext/ED091400.pdf','ERIC'); return false;" href="http://files.eric.ed.gov/fulltext/ED091400.pdf"><span id="translatedtitle">A Duplicate Construction <span class="hlt">Experiment</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Bridgeman, Brent</p> <p></p> <p>This <span class="hlt">experiment</span> was designed to assess the ability of item writers to construct truly parallel tests based on a "duplicate-construction <span class="hlt">experiment</span>" in which Cronbach argues that if the universe description and sampling are ideally refined, the two independently constructed tests will be entirely equivalent, and that within the limits of item…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://files.eric.ed.gov/fulltext/ED029629.pdf','ERIC'); return false;" href="http://files.eric.ed.gov/fulltext/ED029629.pdf"><span id="translatedtitle">The Academic <span class="hlt">Experience</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Chickering, Arthur W.</p> <p></p> <p>This report shows the results of a questionnaire on academic <span class="hlt">experiences</span>, administered to students at four different colleges. Included in the term "academic <span class="hlt">experiences</span>" are such factors as mental activities in class and in studying for class, the role of the teacher, motivation for studying, feelings about courses, and patterns of work. Two main…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=Light+AND+pollution&pg=3&id=EJ224287','ERIC'); return false;" href="http://eric.ed.gov/?q=Light+AND+pollution&pg=3&id=EJ224287"><span id="translatedtitle">Notes on <span class="hlt">Experiments</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Physics Education, 1980</p> <p>1980-01-01</p> <p>Describes briefly three <span class="hlt">experiments</span>, which are presented by three physics teachers to share their ideas with other teachers and readers. These <span class="hlt">experiments</span> are: (1) a simple hazemeter for window pollution assessment; (2) the speed of light; and (3) the ball-bearing electric motor. (HM)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=experiment&pg=2&id=EJ1049058','ERIC'); return false;" href="http://eric.ed.gov/?q=experiment&pg=2&id=EJ1049058"><span id="translatedtitle">Ball Collision <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Cross, R.</p> <p>2015-01-01</p> <p><span class="hlt">Experiments</span> are described on collisions between two billiard balls and between a bat and a ball. The <span class="hlt">experiments</span> are designed to extend a student's understanding of collision events and could be used either as a classroom demonstration or for a student project.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=experiment&pg=4&id=EJ1080569','ERIC'); return false;" href="http://eric.ed.gov/?q=experiment&pg=4&id=EJ1080569"><span id="translatedtitle">On the Poggendorff <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Coelho, Ricardo Lopes; Silva, P. A. S.; Borges, Paulo de Faria</p> <p>2015-01-01</p> <p>Poggendorff showed experimentally, in the middle of the 19th century, that the weight of an Atwood machine is reduced when it is brought to motion. His <span class="hlt">experiment</span> has been revisited from time to time, making use of instrumentation that reflects the technological development of the moment. In this paper, the evolution of the <span class="hlt">experiment</span> is briefly…</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li class="active"><span>10</span></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_10 --> <div id="page_11" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li class="active"><span>11</span></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="201"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19930075324&hterms=Yams&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3DYams','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19930075324&hterms=Yams&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3DYams"><span id="translatedtitle">Nonparametric identification <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Yam, Yeung</p> <p>1988-01-01</p> <p>The following constitutes a summary of this paper: on-orbit identification methodology starts with nonparametric techniques for a priori system identification; development of the nonparametric identification and model determination <span class="hlt">experiment</span> software has been completed; the validation <span class="hlt">experiments</span> to be performed on the JPL Control and Identification Technology Validation Laboratory have been designed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=music+AND+cognition&id=EJ742881','ERIC'); return false;" href="http://eric.ed.gov/?q=music+AND+cognition&id=EJ742881"><span id="translatedtitle">Varieties of Musical <span class="hlt">Experience</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Bharucha, J. Jamshed; Curtis, Meagan; Paroo, Kaivon</p> <p>2006-01-01</p> <p>In this paper, we argue that music cognition involves the use of acoustic and auditory codes to evoke a variety of conscious <span class="hlt">experiences</span>. The variety of domains that are encompassed by music is so diverse that it is unclear whether a single domain of structure or <span class="hlt">experience</span> is defining. Music is best understood as a form of communication in which…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19760015136','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19760015136"><span id="translatedtitle">MSFC Skylab corollary <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>1974-01-01</p> <p>The evolution of the development and integration of Skylab <span class="hlt">experiments</span> from initial concepts through mission operations is documented. All <span class="hlt">experiment</span> systems are covered as well as management controls which were developed and exercised to assure acceptable operational capability and optimize data acquisition for final scientific results.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/759009','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/759009"><span id="translatedtitle">THE PHENIX <span class="hlt">EXPERIMENT</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>READ,K.F. FOR THE PHENIX COLLABORATIO.</p> <p>1999-01-09</p> <p>The PHENIX <span class="hlt">experiment</span> at RHIC is currently under construction with data collection planned to start in 1999. The heavy ion and spin physics goals of PHENIX are described. The authors discuss the <span class="hlt">experiment</span>'s capabilities to address these physics goals. Highlights of the present status of construction and installation are presented.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=boyles+AND+law&pg=2&id=EJ285866','ERIC'); return false;" href="http://eric.ed.gov/?q=boyles+AND+law&pg=2&id=EJ285866"><span id="translatedtitle">Boyle's Law <span class="hlt">Experiment</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Hermens, Richard A.</p> <p>1983-01-01</p> <p>Suggests that ideal <span class="hlt">experiments</span> fit into course time constraints and be meaningful, relevant to course content, safe, inexpensive, simple, reproducible, and easy to set up/maintain. Describes a Boyle's Law <span class="hlt">experiment</span> that uses a minimum of equipment and meets the foregoing criteria. Apparatus used, procedures, and safety precautions are…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/962661','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/962661"><span id="translatedtitle">Franklin: User <span class="hlt">Experiences</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>National Energy Research Supercomputing Center; He, Yun; Kramer, William T.C.; Carter, Jonathan; Cardo, Nicholas</p> <p>2008-05-07</p> <p>The newest workhorse of the National Energy Research Scientific Computing Center is a Cray XT4 with 9,736 dual core nodes. This paper summarizes Franklin user <span class="hlt">experiences</span> from friendly early user period to production period. Selected successful user stories along with top issues affecting user <span class="hlt">experiences</span> are presented.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=liquid+AND+nitrogen&id=EJ827419','ERIC'); return false;" href="http://eric.ed.gov/?q=liquid+AND+nitrogen&id=EJ827419"><span id="translatedtitle">The Jumping Ring <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Baylie, M.; Ford, P. J.; Mathlin, G. P.; Palmer, C.</p> <p>2009-01-01</p> <p>The jumping ring <span class="hlt">experiment</span> has become central to liquid nitrogen shows given as part of the outreach and open day activities carried out within the University of Bath. The basic principles of the <span class="hlt">experiment</span> are described as well as the effect of changing the geometry of the rings and their metallurgical state. In general, aluminium rings are…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=holograms&pg=3&id=EJ328657','ERIC'); return false;" href="http://eric.ed.gov/?q=holograms&pg=3&id=EJ328657"><span id="translatedtitle">Notes on <span class="hlt">Experiments</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Physics Education, 1985</p> <p>1985-01-01</p> <p>Describes: (1) two <span class="hlt">experiments</span> using a laser (resonant cavity for light and pinhole camera effect with a hologram); (2) optical differaction patterns displayed by microcomputer; and (3) automating the Hall effect (with comments on apparatus needed and computer program used); and (4) an elegant <span class="hlt">experiment</span> in mechanical equilibrium. (JN)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://files.eric.ed.gov/fulltext/ED040633.pdf','ERIC'); return false;" href="http://files.eric.ed.gov/fulltext/ED040633.pdf"><span id="translatedtitle">Programmed French: An <span class="hlt">Experiment</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Breton, Lucien</p> <p></p> <p>An <span class="hlt">experiment</span> in programed language instruction based on the "Basic French" method of T. Mueller and H. Niedzielski is reviewed in this paper. Seventy-two civil servants participated in the program which provided for 60 hours of taped instruction. <span class="hlt">Experiment</span> description, objectives, modifications, and a review of the structuring of lessons 1-20…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19780013622','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19780013622"><span id="translatedtitle">Seasat land <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Estes, J. E.; Barath, F.; Bryant, N.; Cannon, P. J.; Elachi, C.; Goetz, A.; Krishen, K.; Macdonald, H. C.; Marmelstein, A.; Miller, L. J.</p> <p>1978-01-01</p> <p>An overview of the Seasat land <span class="hlt">experiments</span> is presented. The potential roles for active microwave imaging systems on board satellites were reviewed with particular emphasis on the Seasat Synthetic Aperture Radar (SAR). Recommendations were made concerning the type of <span class="hlt">experiments</span> that could most profitably be conducted over land with the Seasat SAR system capabilities available.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=glass+AND+engineering&pg=3&id=EJ260525','ERIC'); return false;" href="http://eric.ed.gov/?q=glass+AND+engineering&pg=3&id=EJ260525"><span id="translatedtitle">A Column Dispersion <span class="hlt">Experiment</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Corapcioglu, M. Y.; Koroglu, F.</p> <p>1982-01-01</p> <p>Crushed glass and a Rhodamine B solution are used in a one-dimensional optically scanned column <span class="hlt">experiment</span> to study the dispersion phenomenon in porous media. Results indicate that the described model gave satisfactory results and that the dispersion process in this <span class="hlt">experiment</span> is basically convective. (DC)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=granting+AND+credit&pg=4&id=EJ256628','ERIC'); return false;" href="http://eric.ed.gov/?q=granting+AND+credit&pg=4&id=EJ256628"><span id="translatedtitle">Life <span class="hlt">Experience</span> Deserves Credit.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Snider, John C.; McGee, Leo</p> <p>1981-01-01</p> <p>Institutions granting credit for life <span class="hlt">experience</span> are faced with obstacles related to the complex, sensitive, threatening, and ambitious nature of the procedure. A three-step process for implementation of a plan for developing credit for life <span class="hlt">experiences</span> is provided, along with a dissenting opinion. (MLW)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=Cosmetics&pg=6&id=EJ872610','ERIC'); return false;" href="http://eric.ed.gov/?q=Cosmetics&pg=6&id=EJ872610"><span id="translatedtitle">Shusterman on Somatic <span class="hlt">Experience</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Maattanen, Pentti</p> <p>2010-01-01</p> <p>Richard Shusterman's "Body Consciousness" aims at formulating a theory of somaesthetics and somatic <span class="hlt">experience</span>. There has indeed been a growing interest in the role of the body in <span class="hlt">experience</span>. Shusterman examines the arguments of six important writers who have been influential in this discussion. The emphasis on the body is natural for a…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=Henry+AND+failure&pg=3&id=ED380046','ERIC'); return false;" href="http://eric.ed.gov/?q=Henry+AND+failure&pg=3&id=ED380046"><span id="translatedtitle">The Student <span class="hlt">Experience</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Haselgrove, Susanne, Ed.</p> <p></p> <p>This collection of papers discusses the <span class="hlt">experience</span> of students in the United Kingdom's new, mass higher education system. The papers are viewed as dispatches from the "front line" rather than conventional analyses by education researchers. The organization of the papers mirrors the stages of students' <span class="hlt">experience</span> of higher education--getting in,…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=maslow&pg=2&id=EJ893538','ERIC'); return false;" href="http://eric.ed.gov/?q=maslow&pg=2&id=EJ893538"><span id="translatedtitle">Peak <span class="hlt">Experience</span> Project</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Scott, Daniel G.; Evans, Jessica</p> <p>2010-01-01</p> <p>This paper emerges from the continued analysis of data collected in a series of international studies concerning Childhood Peak <span class="hlt">Experiences</span> (CPEs) based on developments in understanding peak <span class="hlt">experiences</span> in Maslow's hierarchy of needs initiated by Dr Edward Hoffman. Bridging from the series of studies, Canadian researchers explore collected…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=thinking+AND+Magic&pg=6&id=ED048276','ERIC'); return false;" href="http://eric.ed.gov/?q=thinking+AND+Magic&pg=6&id=ED048276"><span id="translatedtitle">The Shared <span class="hlt">Experience</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>MacKinlay, Eileen</p> <p></p> <p>The writing of students at colleges of education about their teaching <span class="hlt">experiences</span> and the writing done for them by children in infant and junior schools comprise this account of attempts to answer such questions as "What makes children want to write?" and "What is the relation between a writer's <span class="hlt">experience</span> and imagination?" Excerpts from college…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://files.eric.ed.gov/fulltext/EJ1080011.pdf','ERIC'); return false;" href="http://files.eric.ed.gov/fulltext/EJ1080011.pdf"><span id="translatedtitle">Play as <span class="hlt">Experience</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Henricks, Thomas S.</p> <p>2015-01-01</p> <p>The author investigates what he believes one of the more important aspects of play--the <span class="hlt">experience</span> it generates in its participants. He considers the quality of this <span class="hlt">experience</span> in relation to five ways of viewing play--as action, interaction, activity, disposition, and within a context. He treats broadly the different forms of affect, including…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1295660','PMC'); return false;" href="http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1295660"><span id="translatedtitle">Near-death <span class="hlt">experiences</span>.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Blackmore, S J</p> <p>1996-01-01</p> <p>Reactions to claims of near-death <span class="hlt">experiences</span> (NDE) range from the popular view that this must be evidence for life after death, to outright rejection of the <span class="hlt">experiences</span> as, at best, drug induced hallucinations or, at worse, pure invention. Twenty years, and much research, later, it is clear that neither extreme is correct. PMID:8683504</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=athletes+AND+academic+AND+performance&pg=3&id=EJ868446','ERIC'); return false;" href="http://eric.ed.gov/?q=athletes+AND+academic+AND+performance&pg=3&id=EJ868446"><span id="translatedtitle">The Student Athlete <span class="hlt">Experience</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Gayles, Joy Gaston</p> <p>2009-01-01</p> <p>Prior to the 1980s, the literature on the <span class="hlt">experiences</span> of collegiate student athletes was rather scarce. Since that time the National Collegiate Athletic Association (NCAA) has passed several eligibility rules to address concerns about the academic performance and the overall <span class="hlt">experience</span> of student athletes on college campuses. As such, the…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19900005292','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19900005292"><span id="translatedtitle">Extravehicular activity welding <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Watson, J. Kevin</p> <p>1989-01-01</p> <p>The In-Space Technology <span class="hlt">Experiments</span> Program (INSTEP) provides an opportunity to explore the many critical questions which can only be answered by experimentation in space. The objective of the Extravehicular Activity Welding <span class="hlt">Experiment</span> definition project was to define the requirements for a spaceflight <span class="hlt">experiment</span> to evaluate the feasibility of performing manual welding tasks during EVA. Consideration was given to <span class="hlt">experiment</span> design, work station design, welding hardware design, payload integration requirements, and human factors (including safety). The results of this effort are presented. Included are the specific objectives of the flight test, details of the tasks which will generate the required data, and a description of the equipment which will be needed to support the tasks. Work station requirements are addressed as are human factors, STS integration procedures and, most importantly, safety considerations. A preliminary estimate of the cost and the schedule for completion of the <span class="hlt">experiment</span> through flight and postflight analysis are given.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li class="active"><span>11</span></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_11 --> <div id="page_12" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li class="active"><span>12</span></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="221"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2013NuPhS.235..135P','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2013NuPhS.235..135P"><span id="translatedtitle">Hadron production <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Popov, Boris A.</p> <p>2013-02-01</p> <p>The HARP and NA61/SHINE hadroproduction <span class="hlt">experiments</span> as well as their implications for neutrino physics are discussed. HARP measurements have already been used for predictions of neutrino beams in K2K and MiniBooNE/SciBooNE <span class="hlt">experiments</span> and are also being used to improve the atmospheric neutrino flux predictions and to help in the optimization of neutrino factory and super-beam designs. First measurements released recently by the NA61/SHINE <span class="hlt">experiment</span> are of significant importance for a precise prediction of the J-PARC neutrino beam used for the T2K <span class="hlt">experiment</span>. Both HARP and NA61/SHINE <span class="hlt">experiments</span> provide also a large amount of input for validation and tuning of hadron production models in Monte-Carlo generators.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19760057710&hterms=Education+Rural&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3DEducation%2BRural','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19760057710&hterms=Education+Rural&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3DEducation%2BRural"><span id="translatedtitle">Health education telecommunications <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Whalen, A. A.</p> <p>1975-01-01</p> <p>The Health/Education Telecommunications <span class="hlt">Experiment</span> (HET) was conducted jointly by NASA and HEW on NASA's ATS-6 communications satellite. This <span class="hlt">experiment</span> actually consisted of six <span class="hlt">experiments</span> testing health and education applications of a communication spacecraft producing a broadcast of color television directly from space to over 120 low-cost receivers located in remote rural areas throughout the U.S. (including Alaska). The <span class="hlt">experiments</span> were conducted over the period from 2 July 1974 to 20 May 1975 and operated on an almost daily basis. The overall telecommunications system to support these <span class="hlt">experiments</span> consisted of many elements: The ATS-6 spacecraft; five different types of earth stations consisting of 120 video receive terminals, 51 telephony tranceivers and eight video originating terminals of three different types. Actual performance of the equipment as measured in the field was shown to equal or exceed predicted values.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19950017608','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19950017608"><span id="translatedtitle">USML-1 Glovebox <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Naumann, Robert J.</p> <p>1995-01-01</p> <p>This report covers the development of and results from three <span class="hlt">experiments</span> that were flown in the Materials Science Glovebox on USML-1: Marangoni convection in Closed Containers (MCCC), Double Float Zone (DFZ), and Fiber Pulling in Microgravity (FPM). The Glovebox provided a convenient, low cost method for doing simple 'try and see' <span class="hlt">experiments</span> that could test new concepts or elucidate microgravity phenomena. Since the Glovebox provided essentially one (or possibly two levels of confinement, many of the stringent verification and test requirements on the <span class="hlt">experiment</span> apparatus could be relaxed and a streamlined test and verification plan for flight qualification could be implemented. Furthermore, the <span class="hlt">experiments</span> were contained in their own carrying cases whose external configurations could be identified early in the integration sequence for stowage considerations while delivery of the actual <span class="hlt">experiment</span> apparatus could be postponed until only a few months before flight. This minimized the time fluids must be contained and reduced the possibility of corrosive reactions that could ruin the <span class="hlt">experiment</span>. In many respects, this exercise was as much about developing a simpler, cheaper way of doing crew-assisted science as it was about the actual scientific accomplishments of the individual <span class="hlt">experiments</span>. The Marangoni Convection in Closed Containers <span class="hlt">experiment</span> was designed to study the effects of a void space in a simulated Bridgman crystal growth configuration and to determine if surface tension driven convective flows that may result from thermal gradients along any free surfaces could affect the solidification process. The Fiber Pulling in Microgravity <span class="hlt">experiment</span> sought to separate the role of gravity drainage from capillarity effects in the break-up of slender cylindrical liquid columns. The Stability of a Double Float Zone <span class="hlt">experiment</span> explored the feasibility of a quasi-containerless process in which a solidifying material is suspended by two liquid bridges of its own melt.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19880014442','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19880014442"><span id="translatedtitle">LDR structural <span class="hlt">experiment</span> definition</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Russell, Richard A.; Gates, Richard M.</p> <p>1988-01-01</p> <p>A study was performed to develop the definition of a structural flight <span class="hlt">experiment</span> for a large precision segmented reflector that would utilize the Space Station. The objective of the study was to use the Large Deployable Reflector (LDR) baseline configuration for focusing on <span class="hlt">experiment</span> definition activity which would identify the Space Station accommodation requirements and interface constraints. Results of the study defined three Space Station based <span class="hlt">experiments</span> to demonstrate the technologies needed for an LDR type structure. The basic <span class="hlt">experiment</span> configurations are the same as the JPL baseline except that the primary mirror truss is 10 meters in diameter instead of 20. The primary objectives of the first <span class="hlt">experiment</span> are to construct the primary mirror support truss and to determine its structural and thermal characteristics. Addition of the optical bench, thermal shield and primary mirror segments and alignment of the optical components occur on the second <span class="hlt">experiment</span>. The structure will then be moved to the payload pointing system for pointing, optical control and scientific optical measurement for the third <span class="hlt">experiment</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19810022007','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19810022007"><span id="translatedtitle">Industrial application <span class="hlt">experiment</span> series</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Bluhm, S. A.</p> <p>1981-01-01</p> <p>Two procurements within the Industrial Application <span class="hlt">Experiment</span> Series of the Thermal Power Systems Project are discussed. The first procurement, initiated in April 1980, resulted in an award to the Applied Concepts Corporation for the Capital Concrete <span class="hlt">Experiment</span>: two Fresnel concentrating collectors will be evaluated in single-unit installations at the Jet Propulsion Laboratory Parabolic Dish Test Site and at Capitol Concrete Products, Topeka, Kansas. The second procurement, initiated in March 1981, is titled, "Thermal System Engineering <span class="hlt">Experiment</span> B." The objective of the procurement is the rapid deployment of developed parabolic dish collectors.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2016PhyEd..51a5007S&link_type=ABSTRACT','NASAADS'); return false;" href="http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2016PhyEd..51a5007S&link_type=ABSTRACT"><span id="translatedtitle">The three eggs <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Şahin Bülbül, Mustafa</p> <p>2016-01-01</p> <p>The three eggs <span class="hlt">experiment</span> concerns 37 pre-service science teachers’ predictions about the impact shapes of three uncooked eggs dropped from different heights. This <span class="hlt">experiment</span> looks at energy transformation from potential to kinetic energy, where the smaller parts of the egg shell spread far from the center of the impact. This <span class="hlt">experience</span> encouraged the pre-service science teachers to use their familiar models, such as a fried egg, omelet, puddle, dropping or explosions, to explain their predictions. These models from everyday life presented can be used as a tool to explain unfamiliar phenomena.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/803388','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/803388"><span id="translatedtitle">Russian Grouting <span class="hlt">Experience</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Langton, C.A.</p> <p>2002-10-15</p> <p>The final report on Russian Grouting <span class="hlt">experience</span> provided an opportunity for international cooperation and access to Russian grouting/waste form <span class="hlt">experience</span>. the data on radiolytic gas generation from grout mixtures was already used in evaluation of the source of hydrogen and methane generation detected in the sampling ports around the SRS high-level waste tanks in 2002. The concept of venting the radiolytic gases from a waste form by adding porous aggregate is being considered for future cement-based TRU waste forms at SRS. The objectives of this work were to document the Russian <span class="hlt">experience</span> on grouting for waste forms and tank closures or other decommissioning applications.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19940018297','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19940018297"><span id="translatedtitle">ROCSAT-1 telecommunication <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Chang, J. F.; Taur, R. R.; Chu, T. H.; Li, H. S.; Su, Y. T.; Kiang, Y. W.; Su, S. L.; Shih, M. P.; Lin, H. D.; Chung, C. D.</p> <p>1993-01-01</p> <p>This paper addresses a telecommunication payload project approved by the R.O.C. NSPO's ROCSAT-1 space program. This project will enable several innovative <span class="hlt">experiments</span> via the low-earth-orbit satellite ROCSAT-1, including multipath fading channel characterization, ionospheric scintillation measurement, real-time voice communications, and CDMA data communications. A unified L/S-band transponder payload is proposed for conducting these <span class="hlt">experiments</span> in an efficient way. The results of these <span class="hlt">experiments</span> would provide the evolving mobile communication communities with fruitful information.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2016PhRvL.116v4301L&link_type=ABSTRACT','NASAADS'); return false;" href="http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2016PhRvL.116v4301L&link_type=ABSTRACT"><span id="translatedtitle">Drexhage's <span class="hlt">Experiment</span> for Sound</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Langguth, Lutz; Fleury, Romain; Alò, Andrea; Koenderink, A. Femius</p> <p>2016-06-01</p> <p>Drexhage's seminal observation that spontaneous emission rates of fluorophores vary with distance from a mirror uncovered the fundamental notion that a source's environment determines radiative linewidths and shifts. Further, this observation established a powerful tool to determine fluorescence quantum yields. We present the direct analogue for sound. We demonstrate that a Chinese gong at a hard wall <span class="hlt">experiences</span> radiative corrections to linewidth and line shift, and extract its intrinsic radiation efficiency. Beyond acoustics, our <span class="hlt">experiment</span> opens new ideas to extend the Drexhage <span class="hlt">experiment</span> to metamaterials, nanoantennas, and multipolar transitions.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/27314719','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/27314719"><span id="translatedtitle">Drexhage's <span class="hlt">Experiment</span> for Sound.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Langguth, Lutz; Fleury, Romain; Alù, Andrea; Koenderink, A Femius</p> <p>2016-06-01</p> <p>Drexhage's seminal observation that spontaneous emission rates of fluorophores vary with distance from a mirror uncovered the fundamental notion that a source's environment determines radiative linewidths and shifts. Further, this observation established a powerful tool to determine fluorescence quantum yields. We present the direct analogue for sound. We demonstrate that a Chinese gong at a hard wall <span class="hlt">experiences</span> radiative corrections to linewidth and line shift, and extract its intrinsic radiation efficiency. Beyond acoustics, our <span class="hlt">experiment</span> opens new ideas to extend the Drexhage <span class="hlt">experiment</span> to metamaterials, nanoantennas, and multipolar transitions. PMID:27314719</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1241598','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1241598"><span id="translatedtitle">Fracturing <span class="hlt">Experiment</span> 2016</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Brown, Donald W.; Keppler, H.; Kuriyagawa, Michio; Murphy, Hugh D.; Walter, Fritz</p> <p>1982-09-27</p> <p><span class="hlt">Experiment</span> 2016 was conducted on June 20 and 21, 1982. This <span class="hlt">experiment</span> represented our third attempt at a fracture connection between the bottom of hole EE-2, and the openhole section of EE-3. The primary objective of <span class="hlt">Experiment</span> 2016 was to hydraulically connect holes EE-2 and EE-3, utilizing a greater amount of injected fluid--1.3 million gallons were pumped into EE-2--and somewhat higher injection rates up to 35 BPM (as compared to 30 BPM during Expt. 2012).</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/759022','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/759022"><span id="translatedtitle">THERMAL DISTRIBUTION SYSTEM <span class="hlt">EXPERIMENT</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>KRAJEWSKI,R.F.; ANDREWS,J.W.; WEI,G.</p> <p>1999-09-01</p> <p>A laboratory <span class="hlt">experiment</span> has been conducted which tests for the effects of distribution system purging on system Delivery Effectiveness (DE) as defined in ASHRAE 152P. The <span class="hlt">experiment</span> is described in its configuration, instrumentation, and data acquisition system. Data gathered in the <span class="hlt">experiment</span> is given and discussed. The results show that purging of the distribution system alone does not offer any improvement of the system DE. Additional supporting tests were conducted regarding experimental simulations of buffer zones and bare pipe and are also discussed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19730025103&hterms=celestial+mechanics&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3D%2528celestial%2Bmechanics%2529','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19730025103&hterms=celestial+mechanics&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3D%2528celestial%2Bmechanics%2529"><span id="translatedtitle">Celestial mechanics <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Lorell, J.; Anderson, J. D.; Jordan, J. F.; Reasenberg, R. D.; Shapiro, I. I.</p> <p>1973-01-01</p> <p>The efforts and accomplishments of the CME Team are summarized. The objectives and <span class="hlt">experiment</span> status, gravity field of Mars, test of general relativity, and the generation of normal points are discussed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=flow+AND+electric&pg=4&id=EJ375467','ERIC'); return false;" href="http://eric.ed.gov/?q=flow+AND+electric&pg=4&id=EJ375467"><span id="translatedtitle">Notes on <span class="hlt">Experiments</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Physics Education, 1988</p> <p>1988-01-01</p> <p>Describes three <span class="hlt">experiments</span>: (1) "Liquid Flow from Orifices"; (2) "Microcomputer-Controlled Investigation of Battery Discharge and Recovery"; and (3) "Measurement of the Speed of Sound." Drawings and diagrams accompany each. (RT)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=Ohm&pg=2&id=EJ371000','ERIC'); return false;" href="http://eric.ed.gov/?q=Ohm&pg=2&id=EJ371000"><span id="translatedtitle">Notes on <span class="hlt">Experiments</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Physics Education, 1988</p> <p>1988-01-01</p> <p>Describes four physics <span class="hlt">experiments</span> including "Investigation of Box Resonances Using a Micro"; "A Direct Reading Wattmeter, DC or AC"; "Exercises in the Application of Ohm's Law"; and "Hysteresis on Gas Discharges." Discusses procedures, instrumentation, and analysis in each example. (CW)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19800024540','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19800024540"><span id="translatedtitle">The monsoon <span class="hlt">experiment</span> MONEX</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Das, P. K.</p> <p>1979-01-01</p> <p>The effects of monsoons in different parts of the world on the Earth's atmosphere were studied by MONEX, India's Monsoon <span class="hlt">Experiment</span> program. Data were gathered from meteorological satellites, sounding rockets, aircraft, land and shipborne stations.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=geiger&pg=3&id=EJ394198','ERIC'); return false;" href="http://eric.ed.gov/?q=geiger&pg=3&id=EJ394198"><span id="translatedtitle">Notes on <span class="hlt">Experiments</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Physics Education, 1989</p> <p>1989-01-01</p> <p>Introduced are two <span class="hlt">experiments</span>: radon detection method shows real data using vacuum cleaner, soft toilet paper, and Geiger-Muller tube; critical potentials measurement describes the operation of Teltron tube with VELA. (YP)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=artificial+AND+selection&pg=2&id=EJ389673','ERIC'); return false;" href="http://eric.ed.gov/?q=artificial+AND+selection&pg=2&id=EJ389673"><span id="translatedtitle"><span class="hlt">Experimenting</span> with Apostatic Selection.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Allen, J. A.; Cooper, J. M.</p> <p>1988-01-01</p> <p>Reviewed is some of the experimental evidence for apostatic selection from work with artificial prey. Guidelines for further <span class="hlt">experiments</span> are suggested including experimental design, analysis, variables, and selection in the wild. (Author/CW)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=Ph+AND+value&pg=6&id=EJ160942','ERIC'); return false;" href="http://eric.ed.gov/?q=Ph+AND+value&pg=6&id=EJ160942"><span id="translatedtitle"><span class="hlt">Experimenting</span> with Detergents</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Mitchell, Gail; Phillips, Donald B.</p> <p>1977-01-01</p> <p>Lists materials and procedures for <span class="hlt">experimenting</span> with detergents. Included are methods for determination of the densities of dry detergents, ph values of detergent solutions, and a discussion of the ability of detergents to remove iodine stains from cloth. (CS)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=leadership+AND+volunteer&pg=7&id=EJ725914','ERIC'); return false;" href="http://eric.ed.gov/?q=leadership+AND+volunteer&pg=7&id=EJ725914"><span id="translatedtitle">The Value of <span class="hlt">Experience</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Weiss, Stefanie C.; Gomperts, John S.</p> <p>2005-01-01</p> <p>Older volunteers are helping urban students in developing the confidence and skills to succeed. Older adults, with their life <span class="hlt">experience</span> and strong commitment to social service, can make a special contribution in underfunded and understaffed urban schools.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li class="active"><span>12</span></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_12 --> <div id="page_13" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li class="active"><span>13</span></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="241"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.youtube.com/watch?v=JpLjR-qwYUs','SCIGOVIMAGE-NASA'); return false;" href="http://www.youtube.com/watch?v=JpLjR-qwYUs"><span id="translatedtitle">Packed Bed Reactor <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.nasa.gov/multimedia/videogallery/index.html">NASA Video Gallery</a></p> <p></p> <p></p> <p>The purpose of the Packed Bed Reactor <span class="hlt">Experiment</span> in low gravity is to determine how a mixture of gas and liquid flows through a packed bed in reduced gravity. A packed bed consists of a metal pipe ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=POLAROID&pg=2&id=EJ336611','ERIC'); return false;" href="http://eric.ed.gov/?q=POLAROID&pg=2&id=EJ336611"><span id="translatedtitle">Notes on <span class="hlt">Experiments</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Physics Education, 1986</p> <p>1986-01-01</p> <p>Describes (1) computer graphics for the coefficient of restitution; (2) an <span class="hlt">experiment</span> on the optical processing of images; and (3) a simple, coherent optical system for character recognition using Polaroid (Type 665) negative film. (JN)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2008mgm..conf.1680P','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2008mgm..conf.1680P"><span id="translatedtitle">The Brain <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Polenta, G.; Calvo, M.; Conversi, L.; de Bernardis, P.; Giordano, C.; Iacoangeli, A.; Maiello, M.; Marini-Bettolo, C.; Masi, S.; Nati, F.; Nati, L.; Peterzen, S.; Piacentini, F.; Sordini, R.; Veneziani, M.; Bartlett, J.; Bréelle, E.; Dufour, C.; Galli, S.; Ganga, K.; Ghribi, A.; Giraud-Heraud, Y.; Guglielmi, L.; Hamilton, J. C.; Kaplan, J.; Piat, M.; Gervasi, M.; Sironi, G.; Spinelli, S.; Tartari, A.; Zannoni, M.; Maffei, B.; Piccirillo, L.; Pisano, G.; Ade, P.; Orlando, A.; Savini, G.; Brossard, J.; Giard, M.; Landé, J.; Bergé, L.; Dumoulin, L.; Juillard, A.; Marnieros, S.; Pajot, F.; Rosset, C.</p> <p>2008-09-01</p> <p>The rotational component of the CMB polarization, the so-called B-modes, is one of the major topic for next generation CMB <span class="hlt">experiments</span>. This signal traces the effect on the CMB due to primordial gravitational waves produced during the inflationary epoch, probing the physics of the very early universe at GUT energy scales. This is a challenge, being the expected amplitude of B-mode polarization ~ 0.1μK. In this paper we describe the BRAIN <span class="hlt">experiment</span>, a bolometric interferometer which combines high sensitivity bolometric detectors with the excellent control of systematic effects proper of interferometers. Being a ground based <span class="hlt">experiment</span>, we identified Dome Charlie in Antarctica as the best site for such measurements. In order to validate the goodness of the site, as well as some of the implemented technical solutions, we built a pathfinder <span class="hlt">experiment</span> which has been successfully operated during last Antarctic summer, and we report about preliminary results obtained.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016EPJWC.11801032S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016EPJWC.11801032S"><span id="translatedtitle">Storage Ring EDM <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Semertzidis, Yannis K.</p> <p>2016-04-01</p> <p>Dedicated storage ring electric dipole moment (EDM) methods show great promise advancing the sensitivity level by a couple orders of magnitude over currently planned hadronic EDM <span class="hlt">experiments</span>. We describe the present status and recent updates of the field.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=.onion&pg=4&id=EJ152056','ERIC'); return false;" href="http://eric.ed.gov/?q=.onion&pg=4&id=EJ152056"><span id="translatedtitle">Foraging <span class="hlt">Experiences</span> with Children</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Russell, Helen Ross</p> <p>1976-01-01</p> <p>Provided are foraging <span class="hlt">experiences</span> and wild foods information for utilization in the urban school curriculum. Food uses are detailed for roses, dandelions, wild onions, acorns, cattails, violets and mints. (BT)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19760020749','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19760020749"><span id="translatedtitle">Electrophoresis <span class="hlt">experiment</span> for space</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Vanderhoff, J. W.; Micale, F. J.</p> <p>1976-01-01</p> <p>The Apollo 16 electrophoresis <span class="hlt">experiment</span> was analyzed, demonstrating that the separation of the two different-size monodisperse latexes did indeed take place, but that the separation was obscured by the pronounced electroosmotic flow of the liquid medium. The results of this <span class="hlt">experiment</span>, however, were dramatic since it is impossible to carry out a similar separation on earth. It can be stated unequivocally from this <span class="hlt">experiment</span> that any electrophoretic separation will be enhanced under microgravity conditions. The only question is the degree of this enhancement, which can be expected to vary from one experimental technique to another. The low-electroosmotic-mobility coating (Z6040-MC) developed under this program was found to be suitable for a free-fluid electrophoretic separation such as the <span class="hlt">experiment</span> designed for the ASTP flight. The problem with this coating, however, is that its permanency is limited because of the slow desorption of the methylcellulose from the coated surface.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=potassium&pg=5&id=EJ201999','ERIC'); return false;" href="http://eric.ed.gov/?q=potassium&pg=5&id=EJ201999"><span id="translatedtitle">Notes on <span class="hlt">Experiments</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Physics Education, 1979</p> <p>1979-01-01</p> <p>Explains how to demonstrate the following: the hysteresis effect and the existence of domains in Rochelle salt (sodium potassium tartrate); diffraction <span class="hlt">experiments</span> using a slide with multiple slits; and an analogue technique for learning terminal velocity. (GA)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=potassium&pg=5&id=EJ185939','ERIC'); return false;" href="http://eric.ed.gov/?q=potassium&pg=5&id=EJ185939"><span id="translatedtitle">A Colorful <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Hunter, C. Bruce</p> <p>1978-01-01</p> <p>This <span class="hlt">experiment</span>, mixing solutions of potassium iodide and lead nitrate to give a bright yellow lead iodide precipitate, often leads students into other topics such as making paint from the precipitate. (BB)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19940018301','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19940018301"><span id="translatedtitle">ACTS mobile SATCOM <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Abbe, Brian S.; Frye, Robert E.; Jedrey, Thomas C.</p> <p>1993-01-01</p> <p>Over the last decade, the demand for reliable mobile satellite communications (satcom) for voice, data, and video applications has increased dramatically. As consumer demand grows, the current spectrum allocation at L-band could become saturated. For this reason, NASA and the Jet Propulsion Laboratory are developing the Advanced Communications Technology Satellites (ACTS) mobile terminal (AMT) and are evaluating the feasibility of K/Ka-band (20/30 GHz) mobile satcom to meet these growing needs. U.S. industry and government, acting as co-partners, will evaluate K/Ka-band mobile satcom and develop new technologies by conducting a series of applications-oriented <span class="hlt">experiments</span>. The ACTS and the AMT testbed will be used to conduct these mobile satcom <span class="hlt">experiments</span>. The goals of the ACTS Mobile <span class="hlt">Experiments</span> Program and the individual <span class="hlt">experiment</span> configurations and objectives are further presented.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.youtube.com/watch?v=c74olQ0V4B4','SCIGOVIMAGE-NASA'); return false;" href="http://www.youtube.com/watch?v=c74olQ0V4B4"><span id="translatedtitle">CCF <span class="hlt">Experiment</span> #1</span></a></p> <p><a target="_blank" href="http://www.nasa.gov/multimedia/videogallery/index.html">NASA Video Gallery</a></p> <p></p> <p></p> <p>Images from CCF camera during <span class="hlt">Experiment</span> #1, or EU#1, square groove geometry operations. The free surface, or gas/liquid interface, assumes a curved shape under subcritical flow conditions as its m...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=organic+AND+carbon&pg=5&id=EJ126527','ERIC'); return false;" href="http://eric.ed.gov/?q=organic+AND+carbon&pg=5&id=EJ126527"><span id="translatedtitle">Dihalocarbene Insertion <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Goh, S. H.</p> <p>1975-01-01</p> <p>Describes the insertion reaction using the insertion of carbenes into carbon-hydrogen bonds as an example. Outlines an <span class="hlt">experiment</span> that will illustrate dihalocarbene insertions into diisopropyl ether. (GS)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/21611821','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/21611821"><span id="translatedtitle">Status of RENO <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Jang, Jee-Seung</p> <p>2011-10-06</p> <p>The RENO (Reactor <span class="hlt">Experiment</span> for Neutrino Oscillation) <span class="hlt">experiment</span> is under construction to measure the smallest neutrino mixing angle {theta}{sub 13} using anti-neutrinos emitted from the Yonggwang nuclear power plant in Korea. The <span class="hlt">experiment</span> is planning to start data-taking in early 2011 with two identical 16-ton Gadolinium loaded liquid scintillator detectors located near and far from the center of the reactor array. The estimated systematic uncertainty associated with the measurement is less than 0.6%. Based on three years of data, the expected statistical error is about 0.3% and it would be sensitive to measure the neutrino mixing angle in the range, sin{sup 2}(2{theta}{sub 13})> 0.02. In this talk, the overview and status of RENO <span class="hlt">experiment</span> are described.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2011AIPC.1382..138J','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2011AIPC.1382..138J"><span id="translatedtitle">Status of RENO <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Jang, Jee-Seung</p> <p>2011-10-01</p> <p>The RENO (Reactor <span class="hlt">Experiment</span> for Neutrino Oscillation) <span class="hlt">experiment</span> is under construction to measure the smallest neutrino mixing angle θ13 using anti-neutrinos emitted from the Yonggwang nuclear power plant in Korea. The <span class="hlt">experiment</span> is planning to start data-taking in early 2011 with two identical 16-ton Gadolinium loaded liquid scintillator detectors located near and far from the center of the reactor array. The estimated systematic uncertainty associated with the measurement is less than 0.6%. Based on three years of data, the expected statistical error is about 0.3% and it would be sensitive to measure the neutrino mixing angle in the range, sin2(2θ13)> 0.02. In this talk, the overview and status of RENO <span class="hlt">experiment</span> are described.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2011NuPhS.217..137J','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2011NuPhS.217..137J"><span id="translatedtitle">Status of RENO <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Jeon, Eun-Ju; RENO Collaboration</p> <p>2011-08-01</p> <p>An <span class="hlt">experiment</span>, RENO ( Reactor <span class="hlt">Experiment</span> for Neutrino Oscillation), is under construction to measure the smallest and unknown neutrino mixing angle ( θ) using anti-neutrinos emitted from the Yonggwang nuclear power plant in Korea. The experimental setup consists of two identical 16-ton Gadolinium loaded liquid scintillator detectors located near and far from the reactor array to measure the deviations from the inverse square distance law. The <span class="hlt">experiment</span> is planned to start data-taking in early 2011. An estimated systematic uncertainty associated with the measurement is less than 0.6%. Based on three years of data, it would be sensitive to measure the neutrino mixing angle in the range of s(2θ)>0.02. In this talk, the status of RENO <span class="hlt">experiment</span> is described.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19770023343&hterms=experiment+laboratory+Physics&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D90%26Ntt%3Dexperiment%2Blaboratory%2BPhysics','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19770023343&hterms=experiment+laboratory+Physics&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D90%26Ntt%3Dexperiment%2Blaboratory%2BPhysics"><span id="translatedtitle"><span class="hlt">Experiments</span> on atmospheric processes</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Vaughan, W. W.</p> <p>1977-01-01</p> <p>Spacelab technology is examined as applied to the observation of the earth's weather patterns, composition, thermodynamics, and kinematics. An atmospheric cloud physics laboratory and a geophysical fluid flow cell are individually outlined as planned payload <span class="hlt">experiment</span> efforts.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=cricket&pg=5&id=EJ046108','ERIC'); return false;" href="http://eric.ed.gov/?q=cricket&pg=5&id=EJ046108"><span id="translatedtitle"><span class="hlt">Experiments</span> in Animal Behavior</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Polt, James M.</p> <p>1971-01-01</p> <p>Describes <span class="hlt">experiments</span> in conditioning, sensory processes, social behavior, imprinting, innate preferences for color and form, and discrimination learning suitable for secondary school students. Mealworms, crickets, and chicks are used as subjects. (AL)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=holes+AND+Earth&pg=2&id=EJ397051','ERIC'); return false;" href="http://eric.ed.gov/?q=holes+AND+Earth&pg=2&id=EJ397051"><span id="translatedtitle">A Sea <span class="hlt">Experience</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Glickstein, Neil</p> <p>1989-01-01</p> <p>Described is a teacher education program organized by the Sea Education Association in Woods Hole (Massachusetts). The <span class="hlt">experience</span>, including activities and examples of studies conducted, is discussed. Contact information for future cruises is included. (CW)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2015EGUGA..17.4692D&link_type=ABSTRACT','NASAADS'); return false;" href="http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2015EGUGA..17.4692D&link_type=ABSTRACT"><span id="translatedtitle"><span class="hlt">Experiment</span>-o-mania</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Drndarski, Marina</p> <p>2015-04-01</p> <p>Every 21st century student is expected to develop science literacy skills. As this is not part of Serbian national curriculum yet, we decided to introduce it with this project. <span class="hlt">Experiment</span>-o-mania provides students to <span class="hlt">experience</span> science in different and exciting way. It makes opportunity for personalized learning offering space and time to ask (why, where, how, what if) and to try. Therefore, we empower young people with skills of <span class="hlt">experimenting</span>, and they love science back. They ask questions, make hypothesis, make problems and solve them, make mistakes, discuss about the results. Subsequently this raises the students' interest for school curriculum. This vision of science teaching is associated with inquiry-based learning. <span class="hlt">Experiment</span>-o-mania is the unique and recognizable teaching methodology for the elementary school Drinka Pavlović, Belgrade, Serbia. <span class="hlt">Experiment</span>-o-mania implies activities throughout the school year. They are held on extra class sessions, through science <span class="hlt">experiments</span>, science projects or preparations for School's Days of science. Students learn to ask questions, make observations, classify data, communicate ideas, conduct <span class="hlt">experiments</span>, analyse results and make conclusions. All science teachers participate in designing activities and <span class="hlt">experiments</span> for students in <span class="hlt">Experiment</span>-o-mania teaching method. But they are not alone. Teacher of fine arts, English teachers and others also take part. Students have their representatives in this team, too. This is a good way to blend knowledge among different school subject and popularize science in general. All the <span class="hlt">experiments</span> are age appropriate and related to real life situations, local community, society and the world. We explore Fibonacci's arrays, saving energy, solar power, climate change, environmental problems, pollution, daily life situations in the country or worldwide. We introduce great scientists as Nikola Tesla, Milutin Milanković and sir Isaac Newton. We celebrate all relevant international days, weeks</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2008JPhCS.120e2048W','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2008JPhCS.120e2048W"><span id="translatedtitle">The COBRA <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Wilson, J. R.</p> <p>2008-07-01</p> <p>The COBRA <span class="hlt">experiment</span> aims to use a large array of CdZnTe semiconductor detectors to search for neutrinoless double beta decay. The COBRA collaboration are currently operating a small proto-type array of crystals in a low-background environment. This paper presents the current status of the <span class="hlt">experiment</span>, results from current and previous proto-types and future prospects for COBRA.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1244373','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1244373"><span id="translatedtitle"><span class="hlt">Experiment</span> 2076 Report</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Birdsell, Stephen A.; Brown, Donald W.; Dash, Zora V.; Thomson, Jim</p> <p>1988-06-16</p> <p>The purpose of <span class="hlt">Experiment</span> 2076 was to test the well completion in EE-2A by stressing the well to the worst-case conditions. The worst case was considered to be a surface pressure of 5000 psi and thermal stresses corresponding to full cooldown in the well. A secondary objective of this <span class="hlt">experiment</span> was to provide an initial stimulation of the joints intersecting EE-2A, which had previously been exposed to a maximum of 1500 psi.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li class="active"><span>13</span></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_13 --> <div id="page_14" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li class="active"><span>14</span></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="261"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/5438594','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/5438594"><span id="translatedtitle">Spacelab J <span class="hlt">experiment</span> descriptions</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Miller, T.Y.</p> <p>1993-08-01</p> <p>Brief descriptions of the <span class="hlt">experiment</span> investigations for the Spacelab J Mission which was launched from the Kennedy Space Center aboard the Endeavour in Sept. 1992 are presented. <span class="hlt">Experiments</span> cover the following: semiconductor crystals; single crystals; superconducting composite materials; crystal growth; bubble behavior in weightlessness; microgravity environment; health monitoring of Payload Specialists; cultured plant cells; effect of low gravity on calcium metabolism and bone formation; and circadian rhythm. Separate abstracts have been prepared for articles from this report.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19930075317&hterms=Hello&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3DHello','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19930075317&hterms=Hello&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3DHello"><span id="translatedtitle">ISE structural dynamic <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Lock, Malcolm H.; Clark, S. Y.</p> <p>1988-01-01</p> <p>The topics are presented in viewgraph form and include the following: directed energy systems - vibration issue; Neutral Particle Beam Integrated Space <span class="hlt">Experiment</span> (NPB-ISE) opportunity/study objective; vibration sources/study plan; NPB-ISE spacecraft configuration; baseline slew analysis and results; modal contributions; fundamental pitch mode; vibration reduction approaches; peak residual vibration; NPB-ISE spacecraft slew <span class="hlt">experiment</span>; goodbye ISE - hello Zenith Star Program.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19940009259','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19940009259"><span id="translatedtitle">Spacelab J <span class="hlt">experiment</span> descriptions</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Miller, Teresa Y. (Editor)</p> <p>1993-01-01</p> <p>Brief descriptions of the <span class="hlt">experiment</span> investigations for the Spacelab J Mission which was launched from the Kennedy Space Center aboard the Endeavour in Sept. 1992 are presented. <span class="hlt">Experiments</span> cover the following: semiconductor crystals; single crystals; superconducting composite materials; crystal growth; bubble behavior in weightlessness; microgravity environment; health monitoring of Payload Specialists; cultured plant cells; effect of low gravity on calcium metabolism and bone formation; and circadian rhythm.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19730019094','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19730019094"><span id="translatedtitle">Heat pipe flight <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Ollendorf, S.</p> <p>1973-01-01</p> <p>OAO 3 heat pipe flight <span class="hlt">experiments</span> to check out weightlessness behavior are reported. Tested were a hollow channel screen system with helical grooves, a heat pipe with a wicking system of horizontal grooves, and a spiral artery pipe with multichannel fluid return to the evaporator. Flight <span class="hlt">experiment</span> data proved that all heat pipe geometries containing wicking systems provided uninterrupted fluid return to the condensators during weightlessness and sufficient cooling for isothermalizing optical instruments onboard OAO.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70042541','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70042541"><span id="translatedtitle">Surface electrical properties <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Simmons, Gene; Strangway, David; Annan, Peter; Baker, Richard G.; Bannister, Lawrence; Brown, Raymon; Cooper, William; Cubley, Dean; deBettencourt, Joseph; England, Anthony W.; Groener, John; Kong, Jin-Au; LaTorraca, Gerald; Meyer, James; Nanda, Ved; Redman, David; Rossiter, James; Tsang, Leung; Urner, Joseph; Watts, Raymond</p> <p>1973-01-01</p> <p>The surface electrical properties (SEP) <span class="hlt">experiment</span> was used to explore the subsurface material of the Apollo 17 landing site by means of electromagnetic radiation. The <span class="hlt">experiment</span> was designed to detect electrical layering, discrete scattering bodies, and the possible presence of water. From the analysis of the data, it was expected that values of the electrical properties (dielectric constant and loss tangent) of lunar material in situ would be obtained.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19900010635','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19900010635"><span id="translatedtitle">Advanced Doppler tracking <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Armstrong, J. W.</p> <p>1989-01-01</p> <p>The Doppler tracking method is currently the only technique available for broadband gravitational wave searches in the approx. 10(exp -4) to 10(exp -1) Hz low frequency band. A brief review is given of the Doppler method, a discussion of the main noise sources, and a review of <span class="hlt">experience</span> with current spacecraft and the prospects for sensitivity improvements in an advanced Doppler tracking <span class="hlt">experiment</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/1043132','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/1043132"><span id="translatedtitle">The MAJORANA <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Aguayo Navarrete, Estanislao; Avignone, F. T.; Back, Henning O.; Barabash, Alexander S.; Bergevin, M.; Bertrand, F.; Boswell, M.; Brudanin, V.; Busch, Matthew; Chan, Yuen-Dat; Christofferson, Cabot-Ann; Collar, J. I.; Combs, Dustin C.; Cooper, R. J.; Detwiler, Jason A.; Doe, Peter J.; Efremenko, Yuri; Egorov, Viatcheslav; Ejiri, H.; Elliott, Steven R.; Esterline, James H.; Fast, James E.; Fields, N.; Finnerty, P.; Fraenkle, Florian; Gehman, Victor M.; Giovanetti, G. K.; Green, Matthew P.; Guiseppe, Vincente; Gusey, K.; Hallin, A. L.; Hazama, R.; Henning, R.; Hime, Andrew; Hoppe, Eric W.; Horton, Mark; Howard, Stanley; Howe, M. A.; Johnson, R. A.; Keeter, K.; Keillor, Martin E.; Keller, C.; Kephart, Jeremy D.; Kidd, Mary; Knecht, A.; Kochetov, Oleg; Konovalov, S.; Kouzes, Richard T.; LaFerriere, Brian D.; LaRoque, B. H.; Leon, Jonathan D.; Leviner, L.; Loach, J. C.; MacMullin, S.; Marino, Michael G.; Martin, R. D.; Mei, Dong-Ming; Merriman, Jason H.; Miller, M. L.; Mizouni, Leila; Nomachi, Masaharu; Orrell, John L.; Overman, Nicole R.; Phillips, D.; Poon, Alan; Perumpilly, Gopakumar; Prior, Gersende; Radford, D. C.; Rielage, Keith; Robertson, R. G. H.; Ronquest, M. C.; Schubert, Alexis G.; Shima, T.; Shirchenko, M.; Snavely, Kyle J.; Sobolev, V.; Steele, David; Strain, J.; Thomas, K.; Timkin, V.; Tornow, W.; Vanyushin, I.; Varner, R. L.; Vetter, Kai; Vorren, Kris R.; Wilkerson, John; Wolfe, B. A.; Yakushev, E.; Young, A.; Yu, Chang-Hong; Yumatov, Vladimir; Zhang, C.</p> <p>2011-10-01</p> <p>The Majorana collaboration is actively pursuing research and development aimed at a tonne-scale {sup 76}Ge neutrinoless double-beta decay ({beta}{beta}(0{nu})-decay) <span class="hlt">experiment</span>. The current, primary focus is the construction of the Majorana Demonstrator <span class="hlt">experiment</span>, an R and D effort that will field approximately 40 kg of germanium detectors with mixed enrichment levels. This article provides a status update on the construction of the Demonstrator.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/1059433','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/1059433"><span id="translatedtitle">The GLUEX <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>M.R. Shepherd</p> <p>2009-12-01</p> <p>The GLUEX <span class="hlt">experiment</span>, to be constructed in the new Hall D at Jefferson Lab as part of the 12 GeV upgrade, will utilize a linearly polarized 9 GeV photon beam, produced via coherent bremsstrahlung radiation off of a diamond wafer, incident on a proton target to conduct a search for exotic hybrid mesons. A summary of the physics motivation for the <span class="hlt">experiment</span> and the key factors that drive the design of the detector and beam line is presented.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19750019675','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19750019675"><span id="translatedtitle">Skylab sleep monitoring <span class="hlt">experiment</span> (<span class="hlt">experiment</span> M133)</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Frost, J. D., Jr.</p> <p>1975-01-01</p> <p>A summary of the conceptual design of the Skylab sleep monitoring <span class="hlt">experiment</span> and a comprehensive compilation of the data-analysis results from the three Skylab missions is presented. One astronaut was studied per flight, electroencephalographic, electro-oculographic, and headmotion signals acquired during sleep by use of an elastic recording cap containing sponge electrodes and an attached miniature preamplifier/accelerometer unit are shown. A control-panel assembly, mounted in the sleep compartment, tested electrodes, preserved analog signals, and automatically analyzed data in real time (providing a telemetered indication of sleep stage). Results indicate that men are able to obtain adequate sleep in regularly scheduled eight-hour rest periods during extended space missions.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1992ssfu.conf..349K','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1992ssfu.conf..349K"><span id="translatedtitle">Modal identification <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Kvaternik, Raymond G.</p> <p></p> <p>The Modal Identification <span class="hlt">Experiment</span> (MIE) is a proposed on-orbit <span class="hlt">experiment</span> being developed by NASA's Office of Aeronautics and Space Technology wherein a series of vibration measurements would be made on various configurations of Space Station Freedom (SSF) during its on-orbit assembly phase. The <span class="hlt">experiment</span> is to be conducted in conjunction with station reboost operations and consists of measuring the dynamic responses of the spacecraft produced by station-based attitude control system and reboost thrusters, recording and transmitting the data, and processing the data on the ground to identify the natural frequencies, damping factors, and shapes of significant vibratory modes. The <span class="hlt">experiment</span> would likely be a part of the Space Station on-orbit verification. Basic research objectives of MIE are to evaluate and improve methods for analytically modeling large space structures, to develop techniques for performing in-space modal testing, and to validate candidate techniques for in-space modal identification. From an engineering point of view, MIE will provide the first opportunity to obtain vibration data for the fully-assembled structure because SSF is too large and too flexible to be tested as a single unit on the ground. Such full-system data is essential for validating the analytical model of SSF which would be used in any engineering efforts associated with structural or control system changes that might be made to the station as missions evolve over time. Extensive analytical simulations of on-orbit tests, as well exploratory laboratory simulations using small-scale models, have been conducted in-house and under contract to develop a measurement plan and evaluate its potential performance. In particular, performance trade and parametric studies conducted as part of these simulations were used to resolve issues related to the number and location of the measurements, the type of excitation, data acquisition and data processing, effects of noise and nonlinearities</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/17345685','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/17345685"><span id="translatedtitle">Understanding customer <span class="hlt">experience</span>.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Meyer, Christopher; Schwager, Andre</p> <p>2007-02-01</p> <p>Anyone who has signed up for cell phone service, attempted to claim a rebate, or navigated a call center has probably suffered from a company's apparent indifference to what should be its first concern: the customer <span class="hlt">experiences</span> that culminate in either satisfaction or disappointment and defection. Customer <span class="hlt">experience</span> is the subjective response customers have to direct or indirect contact with a company. It encompasses every aspect of an offering: customer care, advertising, packaging, features, ease of use, reliability. Customer <span class="hlt">experience</span> is shaped by customers' expectations, which largely reflect previous <span class="hlt">experiences</span>. Few CEOs would argue against the significance of customer <span class="hlt">experience</span> or against measuring and analyzing it. But many don't appreciate how those activities differ from CRM or just how illuminating the data can be. For instance, the majority of the companies in a recent survey believed they have been providing "superior" <span class="hlt">experiences</span> to customers, but most customers disagreed. The authors describe a customer <span class="hlt">experience</span> management (CEM) process that involves three kinds of monitoring: past patterns (evaluating completed transactions), present patterns (tracking current relationships), and potential patterns (conducting inquiries in the hope of unveiling future opportunities). Data are collected at or about touch points through such methods as surveys, interviews, focus groups, and online forums. Companies need to involve every function in the effort, not just a single customer-facing group. The authors go on to illustrate how a cross-functional CEM system is created. With such a system, companies can discover which customers are prospects for growth and which require immediate intervention. PMID:17345685</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70131481','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70131481"><span id="translatedtitle">Dual-domain mass-transfer parameters from electrical hysteresis: theory and analytical approach applied to laboratory, synthetic streambed, and groundwater <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Briggs, Martin; Day-Lewis, Frederick D.; Ong, John B.; Harvey, Judson W.; Lane, Jr., John W.</p> <p>2014-01-01</p> <p>Models of dual-domain mass transfer (DDMT) are used to explain anomalous aquifer transport behavior such as the slow release of contamination and solute tracer tailing. Traditional tracer <span class="hlt">experiments</span> to characterize DDMT are performed at the flow path scale (meters), which inherently incorporates heterogeneous exchange processes; hence, estimated “effective” parameters are sensitive to experimental design (i.e., duration and injection velocity). Recently, electrical geophysical methods have been used to aid in the inference of DDMT parameters because, unlike traditional fluid sampling, electrical methods can directly sense less-mobile solute dynamics and can target specific points along subsurface flow paths. Here we propose an analytical framework for graphical parameter inference based on a simple petrophysical model explaining the <span class="hlt">hysteretic</span> relation between measurements of bulk and fluid conductivity arising in the presence of DDMT at the local scale. Analysis is graphical and involves visual inspection of hysteresis patterns to (1) determine the size of paired mobile and less-mobile porosities and (2) identify the exchange rate coefficient through simple curve fitting. We demonstrate the approach using laboratory column experimental data, synthetic streambed experimental data, and field tracer-test data. Results from the analytical approach compare favorably with results from calibration of numerical models and also independent measurements of mobile and less-mobile porosity. We show that localized electrical hysteresis patterns resulting from diffusive exchange are independent of injection velocity, indicating that repeatable parameters can be extracted under varied experimental designs, and these parameters represent the true intrinsic properties of specific volumes of porous media of aquifers and hyporheic zones.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014WRR....50.8281B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014WRR....50.8281B"><span id="translatedtitle">Dual-domain mass-transfer parameters from electrical hysteresis: Theory and analytical approach applied to laboratory, synthetic streambed, and groundwater <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Briggs, Martin A.; Day-Lewis, Frederick D.; Ong, John B.; Harvey, Judson W.; Lane, John W.</p> <p>2014-10-01</p> <p>Models of dual-domain mass transfer (DDMT) are used to explain anomalous aquifer transport behavior such as the slow release of contamination and solute tracer tailing. Traditional tracer <span class="hlt">experiments</span> to characterize DDMT are performed at the flow path scale (meters), which inherently incorporates heterogeneous exchange processes; hence, estimated "effective" parameters are sensitive to experimental design (i.e., duration and injection velocity). Recently, electrical geophysical methods have been used to aid in the inference of DDMT parameters because, unlike traditional fluid sampling, electrical methods can directly sense less-mobile solute dynamics and can target specific points along subsurface flow paths. Here we propose an analytical framework for graphical parameter inference based on a simple petrophysical model explaining the <span class="hlt">hysteretic</span> relation between measurements of bulk and fluid conductivity arising in the presence of DDMT at the local scale. Analysis is graphical and involves visual inspection of hysteresis patterns to (1) determine the size of paired mobile and less-mobile porosities and (2) identify the exchange rate coefficient through simple curve fitting. We demonstrate the approach using laboratory column experimental data, synthetic streambed experimental data, and field tracer-test data. Results from the analytical approach compare favorably with results from calibration of numerical models and also independent measurements of mobile and less-mobile porosity. We show that localized electrical hysteresis patterns resulting from diffusive exchange are independent of injection velocity, indicating that repeatable parameters can be extracted under varied experimental designs, and these parameters represent the true intrinsic properties of specific volumes of porous media of aquifers and hyporheic zones.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3932236','PMC'); return false;" href="http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3932236"><span id="translatedtitle"><span class="hlt">Experiments</span> in Computing: A Survey</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Moisseinen, Nella</p> <p>2014-01-01</p> <p><span class="hlt">Experiments</span> play a central role in science. The role of <span class="hlt">experiments</span> in computing is, however, unclear. Questions about the relevance of <span class="hlt">experiments</span> in computing attracted little attention until the 1980s. As the discipline then saw a push towards experimental computer science, a variety of technically, theoretically, and empirically oriented views on <span class="hlt">experiments</span> emerged. As a consequence of those debates, today's computing fields use <span class="hlt">experiments</span> and <span class="hlt">experiment</span> terminology in a variety of ways. This paper analyzes experimentation debates in computing. It presents five ways in which debaters have conceptualized <span class="hlt">experiments</span> in computing: feasibility <span class="hlt">experiment</span>, trial <span class="hlt">experiment</span>, field <span class="hlt">experiment</span>, comparison <span class="hlt">experiment</span>, and controlled <span class="hlt">experiment</span>. This paper has three aims: to clarify <span class="hlt">experiment</span> terminology in computing; to contribute to disciplinary self-understanding of computing; and, due to computing's centrality in other fields, to promote understanding of <span class="hlt">experiments</span> in modern science in general. PMID:24688404</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19990028514','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19990028514"><span id="translatedtitle">FIRE Arctic Clouds <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Curry, J. A.; Hobbs, P. V.; King, M. D.; Randall, D. A.; Minnis, P.; Issac, G. A.; Pinto, J. O.; Uttal, T.; Bucholtz, A.; Cripe, D. G.; Gerber, H.; Fairall, C. W.; Garrett, T. J.; Hudson, J.; Intrieri, J. M.; Jakob, C.; Jensen, T.; Lawson, P.; Marcotte, D.; Nguyen, L.</p> <p>1998-01-01</p> <p>An overview is given of the First ISCCP Regional <span class="hlt">Experiment</span> (FIRE) Arctic Clouds <span class="hlt">Experiment</span> that was conducted in the Arctic during April through July, 1998. The principal goal of the field <span class="hlt">experiment</span> was to gather the data needed to examine the impact of arctic clouds on the radiation exchange between the surface, atmosphere, and space, and to study how the surface influences the evolution of boundary layer clouds. The observations will be used to evaluate and improve climate model parameterizations of cloud and radiation processes, satellite remote sensing of cloud and surface characteristics, and understanding of cloud-radiation feedbacks in the Arctic. The <span class="hlt">experiment</span> utilized four research aircraft that flew over surface-based observational sites in the Arctic Ocean and Barrow, Alaska. In this paper we describe the programmatic and science objectives of the project, the experimental design (including research platforms and instrumentation), conditions that were encountered during the field <span class="hlt">experiment</span>, and some highlights of preliminary observations, modelling, and satellite remote sensing studies.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014AGUFMGC11C0576M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014AGUFMGC11C0576M"><span id="translatedtitle">National Flood Interoperability <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Maidment, D. R.</p> <p>2014-12-01</p> <p>The National Flood Interoperability <span class="hlt">Experiment</span> is led by the academic community in collaboration with the National Weather Service through the new National Water Center recently opened on the Tuscaloosa campus of the University of Alabama. The <span class="hlt">experiment</span> will also involve the partners in IWRSS (Integrated Water Resources Science and Services), which include the USGS, the Corps of Engineers and FEMA. The <span class="hlt">experiment</span> will address the following questions: (1) How can near-real-time hydrologic forecasting at high spatial resolution, covering the nation, be carried out using the NHDPlus or next generation geofabric (e.g. hillslope, watershed scales)? (2) How can this lead to improved emergency response and community resilience? (3) How can improved an improved interoperability framework support the first two goals and lead to sustained innovation in the research to operations process? The <span class="hlt">experiment</span> will run from September 2014 through August 2015, in two phases. The mobilization phase from September 2014 until May 2015 will assemble the components of the interoperability framework. A Summer Institute to integrate the components will be held from June to August 2015 at the National Water Center involving faculty and students from the University of Alabama and other institutions coordinated by CUAHSI. It is intended that the insight that arises from this <span class="hlt">experiment</span> will help lay the foundation for a new national scale, high spatial resolution, near-real-time hydrologic simulation system for the United States.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19820007244','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19820007244"><span id="translatedtitle">Cryogenic fluid management <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Eberhardt, R. N.; Bailey, W. J.; Fester, D. A.</p> <p>1981-01-01</p> <p>The cryogenic fluid management <span class="hlt">experiment</span> (CFME), designed to characterize subcritical liquid hydrogen storage and expulsion in the low-q space environment, is discussed. The <span class="hlt">experiment</span> utilizes a fine mesh screen fluid management device to accomplish gas-free liquid expulsion and a thermodynamic vent system to intercept heat leak and control tank pressure. The <span class="hlt">experiment</span> design evolved from a single flight prototype to provision for a multimission (up to 7) capability. A detailed design of the CFME, a dynamic test article, and dedicated ground support equipment were generated. All materials and parts were identified, and components were selected and specifications prepared. Long lead titanium pressurant spheres and the flight tape recorder and ground reproduce unit were procured. <span class="hlt">Experiment</span> integration with the shuttle orbiter, Spacelab, and KSC ground operations was coordinated with the appropriate NASA centers, and <span class="hlt">experiment</span> interfaces were defined. Phase 1 ground and flight safety reviews were conducted. Costs were estimated for fabrication and assembly of the CFME, which will become the storage and supply tank for a cryogenic fluid management facility to investigate fluid management in space.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/57294','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/57294"><span id="translatedtitle">Commercial <span class="hlt">Experiment</span> Transporter: COMET</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Wessling, F.C.; Robinson, M.; Martinez, R.S.; Gallimore, T.; Combs, N.</p> <p>1994-09-01</p> <p>A launch system consisting of ground-support equipment, a four-stage rocket, a service module, a recovery system and a recovery site, and an orbital operations center is being assembled. The system is designed to launch 818 kg (1800 lb) to a 552-km (300-n.mi.) low earth orbit at a 40-deg inclination. <span class="hlt">Experiment</span> space exists in both the service module and the recovery system. The service module provides space for 68 kg (150 lb) of <span class="hlt">experiments</span> plus telemetry services, attitude control, and power and uses no consumables to maintain attitude. Consequently, the service module can maintain orbit attitude for years. Power of 400 W is supplied by solar cells and batteries for both <span class="hlt">experiment</span> operation and housekeeping. The recovery system houses an <span class="hlt">experiment</span> carrier for 136 kg (300 lb) of <span class="hlt">experiments</span>, a retro rocket, a heat shield, and a parachute. An orbital operations control center provides tracking, telemetry, and commanding for the satellite. The payloads are also briefly described. The first launch was scheduled for 1995.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/2610660','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/2610660"><span id="translatedtitle">Conditioning <span class="hlt">experiences</span> and phobias.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Merckelbach, H; de Ruiter, C; van den Hout, M A; Hoekstra, R</p> <p>1989-01-01</p> <p>A retrospective study was conducted to examine the extent to which phobias are associated with a conditioning pathway to fear. The Phobic Origin Questionnaire (Ost and Hugdahl, Behav. Res. Ther. 19, 439-477, 1981) was administered to a sample of 91 phobic outpatients (patients with panic disorder with agoraphobia, social phobics, simple phobics). Results show clearly that conditioning <span class="hlt">experiences</span> occur more frequently than either vicarious or informational, learning <span class="hlt">experiences</span>, which confirms the findings previously reported by Rimm, Janda, Lancaster, Nahl and Dittmar (Behav. Res. Ther. 15, 231-238, 1977) and by Ost and Hugdahl (1981; Behav. Res. Ther. 21, 623-631, 1983). Yet, conditioning <span class="hlt">experiences</span> consist mainly of panic attacks in confirmed environments. The findings also suggest that a considerable number of phobias are based on a combination of different pathways to fear. PMID:2610660</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/11649247','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/11649247"><span id="translatedtitle"><span class="hlt">Experiments</span> and rights.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Vollrath, John</p> <p>1989-04-01</p> <p>William Fletcher's 1905-1906 beriberi <span class="hlt">experiment</span> with residents of the Kuala Lumpur Lunatic Asylum is the focus of Vollrath's essay on the moral obligations of the scientist. If an <span class="hlt">experiment</span> harms some subjects (several of Fletcher's patients died), is the scientific integrity of the research consistent with the scientist's moral obligations to those subjects? Do the subjects have the moral right not to be harmed? What are the subjects' moral rights in this context? The author argues that, aside from the issue of using nonconsenting institutionalized subjects, Fletcher's <span class="hlt">experiment</span> did not violate a moral right of the subjects; moral right is determined prospectively by anticipating risks, not retrospectively by calculating known harms. PMID:11649247</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li class="active"><span>14</span></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_14 --> <div id="page_15" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li class="active"><span>15</span></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="281"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/7480627','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/7480627"><span id="translatedtitle">Results of space <span class="hlt">experiments</span>.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Reitz, G; Horneck, G; Facius, R; Schäfer, M</p> <p>1995-08-01</p> <p>Life science research in space was started in Europe with the first Biostack <span class="hlt">experiment</span> flown onboard Apollo 16 in 1972. Biostack was designed to investigate the biological effects of single heavy ions of cosmic radiation. Among several undertakings towards this goal, the Biostack achieved the highest precision in the determination of the spatial correlation of the observed biological response of single test organisms to the passage of single heavy ions, which is the mandatory requirement. It also provided information on the influence of additional spaceflight factors, such as microgravity, on radiation effects and measurements of the spectrum of charge and energy of the cosmic radiation. The <span class="hlt">experiment</span> was performed as an international cooperation effort. This report gives a summary of the biological data accumulated in this and the follow-on <span class="hlt">experiments</span> of the Biostack program. PMID:7480627</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20020067742','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20020067742"><span id="translatedtitle">Future <span class="hlt">Experiments</span> in Astrophysics</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Krizmanic, John F.</p> <p>2002-01-01</p> <p>The measurement methodologies of astrophysics <span class="hlt">experiments</span> reflect the enormous variation of the astrophysical radiation itself. The diverse nature of the astrophysical radiation, e.g. cosmic rays, electromagnetic radiation, and neutrinos, is further complicated by the enormous span in energy, from the 1.95 Kappa relic neutrino background to cosmic rays with energy greater than 10(exp 20)eV. The measurement of gravity waves and search for dark matter constituents are also of astrophysical interest. Thus, the experimental techniques employed to determine the energy of the incident particles are strongly dependent upon the specific particles and energy range to be measured. This paper summarizes some of the calorimetric methodologies and measurements planned by future astrophysics <span class="hlt">experiments</span>. A focus will be placed on the measurement of higher energy astrophysical radiation. Specifically, future cosmic ray, gamma ray, and neutrino <span class="hlt">experiments</span> will be discussed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/432871','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/432871"><span id="translatedtitle">KISMET tungsten dispersal <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Wohletz, K.; Kunkle, T.; Hawkins, W.</p> <p>1996-12-01</p> <p>Results of the KISMET tungsten dispersal <span class="hlt">experiment</span> indicate a relatively small degree of wall-rock contamination caused by this underground explosive <span class="hlt">experiment</span>. Designed as an add-on to the KISMET test, which was performed in the U-1a.02 drift of the LYNER facility at Nevada Test Site on 1 March 1995, this <span class="hlt">experiment</span> involved recovery and analysis of wall-rock samples affected by the high- explosive test. The chemical, high-explosive blast drove tungsten powder, placed around the test package as a plutonium analog, into the surrounding wall- rock alluvium. Sample analyses by an analytical digital electron microscope (ADEM) show tungsten dispersed in the rock as tiny (<10 {mu}m) particles, agglomerates, and coatings on alluvial clasts. Tungsten concentrations, measured by energy dispersive spectral analysis on the ADEM, indicate penetration depths less than 0.1 m and maximum concentrations of 1.5 wt % in the alluvium.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/25721443','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/25721443"><span id="translatedtitle"><span class="hlt">Experiments</span>: Why and How?</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Hansson, Sven Ove</p> <p>2016-06-01</p> <p>An <span class="hlt">experiment</span>, in the standard scientific sense of the term, is a procedure in which some object of study is subjected to interventions (manipulations) that aim at obtaining a predictable outcome or at least predictable aspects of the outcome. The distinction between an <span class="hlt">experiment</span> and a non-experimental observation is important since they are tailored to different epistemic needs. Experimentation has its origin in pre-scientific technological <span class="hlt">experiments</span> that were undertaken in order to find the best technological means to achieve chosen ends. Important parts of the methodological arsenal of modern experimental science can be traced back to this pre-scientific, technological tradition. It is claimed that experimentation involves a unique combination of acting and observing, a combination whose unique epistemological properties have not yet been fully clarified. PMID:25721443</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014IJMPS..3160283L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014IJMPS..3160283L"><span id="translatedtitle">Reactor antineutrino <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Lu, Haoqi</p> <p>2014-05-01</p> <p>Neutrinos are elementary particles in the standard model of particle physics. There are three flavors of neutrinos that oscillate among themselves. Their oscillation can be described by a 3×3 unitary matrix, containing three mixing angles θ12, θ23, θ13, and one CP phase. Both θ12 and θ23 are known from previous <span class="hlt">experiments</span>. θ13 was unknown just two years ago. The Daya Bay <span class="hlt">experiment</span> gave the first definitive non-zero value in 2012. An improved measurement of the oscillation amplitude sin 22(θ 13) = 0.090+0.008-0.009 and the first direct measurement of the \\bar ν e mass-squared difference ∣ Δ m2ee∣ = (2.59+0.19-0.20)× 10-3 eV2 were obtained recently. The large value of θ13 boosts the next generation of reactor antineutrino <span class="hlt">experiments</span> designed to determine the neutrino mass hierarchy, such as JUNO and RENO-50.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2004APS..DPPBP1024S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2004APS..DPPBP1024S"><span id="translatedtitle">New Ionospheric Interaction <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Sheerin, J. P.</p> <p>2004-11-01</p> <p>Current upgrades to both the HF transmitter and diagnostic capabilities at the HAARP facility near Gakona, AK will permit a new generation ionospheric interaction <span class="hlt">experiments</span>. We explore some of the new phenomena accessible with significantly increased ERP. Large-scale long-lived density structures induced by the HF pump in the ionospheric plasma are investigated. Long-lived density structures which convect with the ambient ionosphere, may serve as tracers for ionospheric flows and fields. Recent advances in HF and VHF radar diagnostics available for HAARP <span class="hlt">experiments</span>, permit plasma wave detection and monitoring. We survey the mode structures expected with the next generation of high intensity <span class="hlt">experiments</span>. Together with existing complementary diagnostics such as stimulated HF emissions and optical effects, these data will provide unprecedented views of highly nonlinear phenomena induced by high intensity RF radiation in the ionosphere.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/21205509','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/21205509"><span id="translatedtitle">Gyroharmonic conversion <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Hirshfield, J. L.; LaPointe, M. A.; Ganguly, A. K.</p> <p>1999-05-07</p> <p>Generation of high power microwaves has been observed in <span class="hlt">experiments</span> where a 250-350 kV, 20-30 A electron beam accelerated in a cyclotron autoresonance accelerator (CARA) passes through a cavity tuned gyroharmonic) and at 8.6 GHz (3rd harmonic) will be described. Theory indicates that high conversion efficiency can be obtained for a high quality beam injected into CARA, and when mode competition can be controlled. Comparisons will be made between the <span class="hlt">experiments</span> and theory. Planned 7th harmonic <span class="hlt">experiments</span> will also be described, in which phase matching between the TE-72 mode at 20 GHz, and the TE-11 mode at 2.86 GHz, allows efficient 20 GHz co-generation within the CARA waveguide itself.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/704165','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/704165"><span id="translatedtitle">Gyroharmonic conversion <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Hirshfield, J.L.; LaPointe, M.A.; Ganguly, A.K.; LaPointe, M.A.</p> <p>1999-05-01</p> <p>Generation of high power microwaves has been observed in <span class="hlt">experiments</span> where a 250{endash}350 kV, 20{endash}30 A electron beam accelerated in a cyclotron autoresonance accelerator (CARA) passes through a cavity tuned gyroharmonic) and at 8.6 GHz (3rd harmonic) will be described. Theory indicates that high conversion efficiency can be obtained for a high quality beam injected into CARA, and when mode competition can be controlled. Comparisons will be made between the <span class="hlt">experiments</span> and theory. Planned 7th harmonic <span class="hlt">experiments</span> will also be described, in which phase matching between the TE-72 mode at 20 GHz, and the TE-11 mode at 2.86 GHz, allows efficient 20 GHz co-generation within the CARA waveguide itself. {copyright} {ital 1999 American Institute of Physics.}</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2010rwch.book..405W','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2010rwch.book..405W"><span id="translatedtitle">The Tokeneer <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Woodcock, Jim; Aydal, Emine Gökçe; Chapman, Rod</p> <p></p> <p>We describe an <span class="hlt">experiment</span> conducted as part of a pilot project in the Verified Software Initiative (VSI). We begin by recounting the background to the VSI and its six initial pilot projects, and give an update on the current progress of each project. We describe one of these, the Tokeneer ID Station in greater detail. Tokeneer was developed by Praxis High Integrity Systems and SPRE for the US National Security Agency, and it has been acclaimed by the US National Academies as representing best practice in software development. To date, only five errors have been found in Tokeneer, and the entire project archive has been released for experimentation within the VSI. We describe the first <span class="hlt">experiment</span> using the Tokeneer archive. Our objective is to investigate the dependability claims for Tokeneer as a security-critical system. Our <span class="hlt">experiment</span> uses a model-based testing technique that exploits formal methods and tools to discover nine anomalous scenarios. We discuss four of these in detail.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2010SPIE.7525E..0FK','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2010SPIE.7525E..0FK"><span id="translatedtitle"><span class="hlt">Experiments</span> in mixed reality</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Krum, David M.; Sadek, Ramy; Kohli, Luv; Olson, Logan; Bolas, Mark</p> <p>2010-01-01</p> <p>As part of the Institute for Creative Technologies and the School of Cinematic Arts at the University of Southern California, the Mixed Reality lab develops technologies and techniques for presenting realistic immersive training <span class="hlt">experiences</span>. Such <span class="hlt">experiences</span> typically place users within a complex ecology of social actors, physical objects, and collections of intents, motivations, relationships, and other psychological constructs. Currently, it remains infeasible to completely synthesize the interactivity and sensory signatures of such ecologies. For this reason, the lab advocates mixed reality methods for training and conducts <span class="hlt">experiments</span> exploring such methods. Currently, the lab focuses on understanding and exploiting the elasticity of human perception with respect to representational differences between real and virtual environments. This paper presents an overview of three projects: techniques for redirected walking, displays for the representation of virtual humans, and audio processing to increase stress.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=MSFC-0301623&hterms=japanese&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3Djapanese','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=MSFC-0301623&hterms=japanese&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3Djapanese"><span id="translatedtitle">Japanese <span class="hlt">Experiment</span> Module (JEM)</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>2003-01-01</p> <p>The Japanese <span class="hlt">Experiment</span> Module (JEM) pressure module is removed from its shipping crate and moved across the floor of the Space Station Processing Facility at Kennedy Space Center (KSC) to a work stand. A research laboratory, the pressurized module is the first element of the JEM, named 'Kibo' (Hope) to arrive at KSC. Japan's primary contribution to the International Space Station, the module will enhance unique research capabilities of the orbiting complex by providing an additional environment in which astronauts will conduct <span class="hlt">experiments</span>. The JEM also includes an exposed facility or platform for space environment <span class="hlt">experiments</span>, a robotic manipulator system, and two logistics modules. The various JEM components will be assembled in space over the course of three Shuttle missions.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2013APS..APRC11006B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2013APS..APRC11006B"><span id="translatedtitle">The CDMSlite <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Basu Thakur, Ritoban</p> <p>2013-04-01</p> <p>The SuperCDMS <span class="hlt">experiment</span> will use new iZIP detectors to achieve competitive sensitivity in the direct detection of Dark Matter, particularly in the 100 to 1000 GeV/c^2 range of WIMP (Weakly Interacting Massive Particles) mass. In the SuperCDMS framework we are also attempting a novel low-threshold <span class="hlt">experiment</span> to look for light WIMPs of mass O(10GeV/c^2). We call this the CDMS low ionization threshold <span class="hlt">experiment</span> or ''CDMSlite.'' Here, we use high bias voltage to amplify the charge signal from low-energy recoils by increasing their Luke phonon emission. In this manner we reduce the detector threshold. I will describe the physics behind CDMSlite and comment on our expected sensitivity to low-mass WIMPs. I will also discuss our progress from running CDMSlite.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=MSFC-0300165&hterms=html&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D90%26Ntt%3Dhtml','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=MSFC-0300165&hterms=html&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D90%26Ntt%3Dhtml"><span id="translatedtitle">Droplet Combustion <span class="hlt">Experiment</span> movie</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>2003-01-01</p> <p>The Droplet Combustion <span class="hlt">Experiment</span> (DCE) was designed to investigate the fundamental combustion aspects of single, isolated droplets under different pressures and ambient oxygen concentrations for a range of droplet sizes varying between 2 and 5 mm. The DCE principal investigator was Forman Williams, University of California, San Diego. The <span class="hlt">experiment</span> was part of the space research investigations conducted during the Microgravity Science Laboratory-1 mission (STS-83, April 4-8 1997; the shortened mission was reflown as MSL-1R on STS-94). Advanced combustion <span class="hlt">experiments</span> will be a part of investigations plarned for the International Space Station. (1.1 MB, 12-second MPEG, screen 320 x 240 pixels; downlinked video, higher quality not available)A still JPG composite of this movie is available at http://mix.msfc.nasa.gov/ABSTRACTS/MSFC-0300164.html.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/23252027','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/23252027"><span id="translatedtitle"><span class="hlt">Experiences</span> of the dying.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Schoenbeck, Susan L</p> <p>2011-01-01</p> <p>It is often a mystery to us how we have come to know and believe in certain things. Beliefs are like guests who come up to a door. They come in only if the host opens it and invites them in. Otherwise they are turned away, unable to enter. LPNs/LVNs are invited to reflect on their <span class="hlt">experiences</span> and expand their knowledge and beliefs. There is growing recognition that bedside talks of the dying, spirit travel and near-death events are real events for the people who <span class="hlt">experience</span> them. LPNs/ LVNs are encouraged to expand their knowledge and beliefs about dying. PMID:23252027</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19750027977&hterms=student+world&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D60%26Ntt%3Dstudent%2Bworld','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19750027977&hterms=student+world&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D60%26Ntt%3Dstudent%2Bworld"><span id="translatedtitle">Student <span class="hlt">experiments</span> on Skylab</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Floyd, H. B.</p> <p>1974-01-01</p> <p>Review of the background and experimental results of the Skylab student project, and assessment of its overall benefits. Virtually all of the objectives of the <span class="hlt">experiments</span> adopted from student proposals were met. NASA benefited from the program by learning that meaningful <span class="hlt">experiments</span> could be incorporated into a carry-on or suitcase concept at low cost and within very short time periods. The students benefited greatly from their association with the Skylab program by being afforded a learning opportunity and contact with the real world of research, normally beyond their reach. In addition, hometowns, states, and regions developed a close identification with space exploration.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20050165548','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20050165548"><span id="translatedtitle">Chondrule Crystallization <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Hweins, R. H.; Connolly, H. C., Jr.; Lofgren, G. E.; Libourel, G.</p> <p>2004-01-01</p> <p>Given the great diversity of chondrules, laboratory <span class="hlt">experiments</span> are invaluable in yielding information on chondrule formation process(es) and for deciphering their initial conditions of formation together with their thermal history. In addition, they provide some critical parameters for astrophysical models of the solar system and of nebular disk evolution in particular (partial pressures, temperature, time, opacity, etc). Most of the <span class="hlt">experiments</span> simulating chondrules have assumed formation from an aggregate of solid grains, with total pressure of no importance and with virtually no gain or loss of elements from or to the ambient environment. They used pressed pellets attached to wires and suffered from some losses of alkalis and Fe.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1993SPIE.1871..335D','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1993SPIE.1871..335D"><span id="translatedtitle">Laboratory atmospheric compensation <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Drutman, C.; Moran, James P.; Faria-e-Maia, Francisco; Hyman, Howard; Russell, Jeffrey A.</p> <p>1993-06-01</p> <p>This paper describes an in-house <span class="hlt">experiment</span> that was performed at the Avco Research Labs/Textron to test a proprietary atmospheric phase compensation algorithm. Since the laser energies of interest were small enough that thermal blooming was not an issue, it was only necessary to simulate the effect of atmospheric turbulence. This was achieved by fabricating phase screens that mimicked Kolmogorov phase statistics. A simulated atmosphere was constructed from these phase screens and the phase at the simulated ground was measured with a digital heterodyne interferometer. The result of this effort was an initial verification of our proprietary algorithm two years before the field <span class="hlt">experiment</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2016AIPC.1721b0002O&link_type=ABSTRACT','NASAADS'); return false;" href="http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2016AIPC.1721b0002O&link_type=ABSTRACT"><span id="translatedtitle"><span class="hlt">Experiments</span> with nonneutral plasmas</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>O'Neil, T. M.</p> <p>2016-03-01</p> <p>Selected <span class="hlt">experiments</span> with nonneutral plasmas are discussed. These include the laser cooling of a pure ion plasma to a crystalline state, a measurement of the Salpeter enhancement factor for fusion in a strongly correlated plasma and the measurement of thermally excited plasma waves. Also, discussed are <span class="hlt">experiments</span> that demonstrate Landau damping, trapping and plasma wave echoes in the 2D ExB drift flow of a pure electron plasma, which is isomorphic to the 2D ideal flow (incompressible and inviscid flow) of a neutral fluid.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2016NIMPA.824..646C&link_type=ABSTRACT','NASAADS'); return false;" href="http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2016NIMPA.824..646C&link_type=ABSTRACT"><span id="translatedtitle">The Archimedes <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Calloni, E.; Caprara, S.; Laurentis, M. De; Esposito, G.; Grilli, M.; Majorana, E.; Pepe, G. P.; Petrarca, S.; Puppo, P.; Rapagnani, P.; Ricci, F.; Rosa, L.; Rovelli, C.; Ruggi, P.; Saini, N. L.; Stornaiolo, C.; Tafuri, F.</p> <p>2016-07-01</p> <p>Archimedes is an INFN-funded pathfinder <span class="hlt">experiment</span> aimed at verifying the feasibility of measuring the interaction of vacuum fluctuations with gravity. The final <span class="hlt">experiment</span> will measure the force exerted by the gravitational field on a Casimir cavity whose vacuum energy is modulated with a superconductive transition, by using a balance as a small force detector. Archimedes is two-year project devoted to test the most critical experimental aspects, in particular the balance resonance frequency and quality factor, the thermal modulation efficiency and the superconductive sample realization.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/882894','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/882894"><span id="translatedtitle">G0 <span class="hlt">experiment</span> status</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>G. Batigne</p> <p>2004-02-01</p> <p>The G0 project is a parity violation <span class="hlt">experiment</span> dedicated to the measurement of the proton weak and axial form factors by means of elastic electron scattering. Combining these weak form factors with the known electromagnetic ones makes possible the extraction of the contribution of strange quarks to the charge and magnetization distributions in the nucleon. After introducing the physics case, this paper describes the G0 apparatus and the measurements planned. An engineering run of this <span class="hlt">experiment</span> took place recently ; first results are presented.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li class="active"><span>15</span></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_15 --> <div id="page_16" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li class="active"><span>16</span></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="301"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/256987','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/256987"><span id="translatedtitle">Offshore wave energy <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Nielsen, K.; Scholten, N.C.; Soerensen, K.A. |</p> <p>1995-12-31</p> <p>This article describes the second phase of the off-shore wave energy <span class="hlt">experiment</span>, taking place in the Danish part of the North Sea near Hanstholm. The wave power converter is a scale model consisting of a float 2.5 meter in diameter connected by rope to a seabed mounted piston pump installed on 25 meter deep water 2,5 km offshore. The structure, installation procedure results and <span class="hlt">experience</span> gained during the test period will be presented and compared to calculations based on a computer model.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19860017844&hterms=Halogens&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3DHalogens','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19860017844&hterms=Halogens&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3DHalogens"><span id="translatedtitle">Halogen lamp <span class="hlt">experiment</span>, HALEX</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Schmitt, G.; Stapelmann, J.</p> <p>1986-01-01</p> <p>The main purpose of the Halogen Lamp <span class="hlt">Experiment</span> (HALEX) was to investigate the operation of a halogen lamp during an extended period in a microgravity environment and to prove its behavior in space. The Mirror Heating Facilities for Crystal Growth and Material Science <span class="hlt">Experiments</span> in space relies on one or two halogen lamps as a furnace to melt the specimens. The HALEX aim is to verify: full power operation of a halogen lamp for a period of about 60 hours; achievement of about 10% of its terrestrial life span; and operation of the halogen lamp under conditions similar to furnace operation.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19930008864','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19930008864"><span id="translatedtitle">Microgravity ignition <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Motevalli, Vahid; Elliott, William; Garrant, Keith</p> <p>1992-01-01</p> <p>The purpose of this project is to develop a flight ready apparatus of the microgravity ignition <span class="hlt">experiment</span> for the GASCan 2 program. This involved redesigning, testing, and making final modifications to the existing apparatus. The microgravity ignition <span class="hlt">experiment</span> is intended to test the effect of microgravity on the time to ignition of a sample of alpha-cellulose paper. An infrared heat lamp is used to heat the paper sample within a sealed canister. The interior of the canister was redesigned to increase stability and minimize conductive heat transfer to the sample. This design was fabricated and tested and a heat transfer model of the paper sample was developed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/21255274','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/21255274"><span id="translatedtitle">Microwave PASER <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Schoessow, P.; Kanareykin, A.; Antipov, S.; Poluektov, O.; Jing, C.</p> <p>2009-01-22</p> <p>The PASER (Particle Acceleration by Stimulated Emission of Radiation) concept for particle acceleration entails the direct transfer of energy from an active medium to a charged particle beam. The PASER was originally formulated for optical (laser) media; we are planning a PASER demonstration <span class="hlt">experiment</span> based on an optically pumped X-band paramagnetic medium consisting of porphyrin or fullerene (C{sub 60}) derivatives in a toluene solution or polystyrene matrix. We discuss the background of this project and report on the status of the <span class="hlt">experiment</span> to measure the acceleration of electrons using the microwave PASER.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19930015733','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19930015733"><span id="translatedtitle">World Ocean Circulation <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Clarke, R. Allyn</p> <p>1992-01-01</p> <p>The oceans are an equal partner with the atmosphere in the global climate system. The World Ocean Circulation <span class="hlt">Experiment</span> is presently being implemented to improve ocean models that are useful for climate prediction both by encouraging more model development but more importantly by providing quality data sets that can be used to force or to validate such models. WOCE is the first oceanographic <span class="hlt">experiment</span> that plans to generate and to use multiparameter global ocean data sets. In order for WOCE to succeed, oceanographers must establish and learn to use more effective methods of assembling, quality controlling, manipulating and distributing oceanographic data.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1179848','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1179848"><span id="translatedtitle">Ti Hemi boombox <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Miller, Phillip Isaac; Hull, Lawrence Mark</p> <p>2015-05-14</p> <p>Previous deformation <span class="hlt">experiments</span> in which IR imaging was used pointed to a correlation in between IR signature in areas where heat was expected to be. The surface is not uniform during deformation <span class="hlt">experiments</span> which cause cracks in the image in areas with increased temperature. To measure temperature under dynamic conditions, simultaneous reflectivity and radiance measurement under events of interest is needed. To measure a temperature measurement, a Reflectance measurement taken by framing camera at the edge of the camera sensitivity (700nm). Allows relative measurement at this wavelength. At reasonable temperatures the spectral radiance should peak near 2u and be 3-4 orders of magnitude higher than at 700 nm.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19750011214&hterms=metal+heat+treating&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3Dmetal%2Bheat%2Btreating','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19750011214&hterms=metal+heat+treating&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3Dmetal%2Bheat%2Btreating"><span id="translatedtitle">Skylab <span class="hlt">experiments</span> on metals</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Lundquist, C. A.</p> <p>1974-01-01</p> <p>The Skylab Materials Processing Facility is described. Eight <span class="hlt">experiments</span> on metal processing under near-zero-gravity conditions were performed in this facility. Three of these involved metals and procedures of potential application to fabrication in space. A Multipurpose electric furnace within the Materials Processing Facility was employed to heat three ampoules of samples for each of the other five <span class="hlt">experiments</span>. These five investigations cover diffusion versus convection rates in molten zinc, several immiscible alloy compositions, a whisker-reinforced silver-based composite, heat treating of porous silver samples, and a copper-aluminum eutectic.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1996GeoRL..23.1865K','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1996GeoRL..23.1865K"><span id="translatedtitle">The SCIFER <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Kintner, Paul M.; Bonnell, John; Arnoldy, Roger; Lynch, Kristina; Pollock, Craig; Moore, Tom; Holtet, Jan; Deehr, Charles; Stenbaek-Nielsen, Hans; Smith, Roger; Olson, John; Moen, Jøran</p> <p></p> <p>The Sounding of the Cleft Ion Fountain Energization Region (SCIFER) <span class="hlt">experiment</span> was conducted to investigate the ionospheric origin of the Cleft Ion Fountain (CIF). In the previous decade several high altitude spacecraft studies concluded that the CIF is the principal source of mass for the magnetosphere, especially O+. Yet the ionospheric cleft in the altitude range between 1000 km and 2000 km had not been explored since the ISIS spacecraft <span class="hlt">experiments</span> in the 1970s. SCIFER was designed to fill that gap with instrumentation that provided continuous spatial/temporal resolution two orders of magnitude better than that achieved by previous orbiting spacecraft.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2009NuPhS.196..403S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2009NuPhS.196..403S"><span id="translatedtitle"><span class="hlt">Experiment</span> SPHERE status 2008</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Shaulov, S. B.; Besshapov, S. P.; Kabanova, N. V.; Sysoeva, T. I.; Antonov, R. A.; Anyuhina, A. M.; Bronvech, E. A.; Chernov, D. V.; Galkin, V. I.; Tkaczyk, W.; Finger, M.; Sonsky, M.</p> <p>2009-12-01</p> <p>The expedition carried out in March, 2008 to Lake Baikal became an important stage in the development of the SPHERE <span class="hlt">experiment</span>. During the expedition the SPHERE-2 installation was hoisted, for the first time, on a tethered balloon, APA, to a height of 700 m over the lake surface covered with ice and snow. A series of test measurements were made. Preliminary results of the data processing are presented. The next plan of the SPHERE <span class="hlt">experiment</span> is to begin a set of statistics for constructing the CR spectrum in the energy range 10-10 eV.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014APS..MAR.G3013D','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014APS..MAR.G3013D"><span id="translatedtitle">Physics Outreach Grant <span class="hlt">Experiences</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Doss, Heide</p> <p>2014-03-01</p> <p>Descriptions of two different Physics Outreach grant projects will be presented. I will discuss my <span class="hlt">experiences</span> trying to engage and teach the public in my locality some physics through birthday parties for the laser in 2010. I will also discuss my <span class="hlt">experiences</span> trying to reach the general public through greeting cards and bookmarks with physics on the back in 2012-2013. These efforts spilled over to a larger audience, which led to a larger impact. I will describe what worked, what didn't, and the value of these efforts. I am pleased to acknowledge the support of my funder APS Outreach.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/5933756','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/5933756"><span id="translatedtitle">AGS <span class="hlt">experiments</span>, 1988, 1989, 1990</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Depken, J.C.</p> <p>1991-04-01</p> <p>This report contains: experimental areas layout; table of beam parameters and fluxes; <span class="hlt">experiment</span> schedule as run''; <span class="hlt">experiment</span> long range schedule; a listing of <span class="hlt">experiments</span> by number; two-page summaries of each <span class="hlt">experiment</span> begin here, also ordered by number; publications of AGS <span class="hlt">experiments</span>; and list of experimenters.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/5264118','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/5264118"><span id="translatedtitle">AGS <span class="hlt">experiments</span>: 1985, 1986, 1987</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Depken, J.C.</p> <p>1987-01-01</p> <p>This report contains: Experimental areas layout, table of beam parameters and fluxes, <span class="hlt">experiment</span> schedule ''as run,'' <span class="hlt">experiment</span> long range schedule, a listing of <span class="hlt">experiments</span> by number, two-page summaries of each <span class="hlt">experiment</span>, also ordered by number, and publications of AGS <span class="hlt">experiments</span>, 1982-1987.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1991GeoRL..18..243H','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1991GeoRL..18..243H"><span id="translatedtitle">The KOSI <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Huebner, W. F.</p> <p>1991-02-01</p> <p>Whipple's icy conglomerate model of the comet nucleus has enjoyed progressively increasing acceptance and success in explaining Earth-based observations of comets since its very inception (Whipple, 1950, 1951). According to this model, the nucleus is a solid body composed of frozen gases and dust. The missions to Comet Halley in 1986, in particular the Vega and the Giotto missions, have confirmed that there is a single solid nucleus that is the root of all the observed phenomena that can be associated with an active comet. Two new comet missions (CRAF and Rosetta) are planned by NASA and ESA to extract further details about the structure and composition of the nucleus. Laboratory <span class="hlt">experiments</span> play an important role in defining and identifying the objectives of these missions: Why are there small areas of activity on the surface while the largest parts of the nucleus appear to be dormant? What are the details of the development of the dusty gas atmosphere (coma)? What is the average tensile strength of the nucleus material? What is its detailed composition and how heterogeneous is it? What is the temperature profile below tie surface? Credible limits on the ranges of these physical and chemical properties and processes can be obtained from laboratory <span class="hlt">experiments</span>. Although such <span class="hlt">experiments</span> have been carried out in many laboratories in Europe, the Soviet Union, the USA, Israel, and Japan, the KOSI <span class="hlt">experiments</span> are the first large-scale investigations (in spatial dimensions and duration). (KOSI is an acronym for Kometensimulation, German for comet simulation.)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/5170940','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/5170940"><span id="translatedtitle">Kelp growth <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>North, W. J.</p> <p>1980-01-01</p> <p>Harvest yields obtainable from giant kelp plants that are adequately fertilized were investigated. The following topics are discussed: desirable characteristics in a candidate macroalga, and giant kelp as a candidate macroalga for ocean farming. Nutrient requirements, field <span class="hlt">experiments</span>, and approaches to acquiring yield data are reviewed. (MHR)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=conference+AND+tourism&id=EJ677320','ERIC'); return false;" href="http://eric.ed.gov/?q=conference+AND+tourism&id=EJ677320"><span id="translatedtitle">The Conference <span class="hlt">Experience</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Woolls, Blanche; Hartman, Linda; Corey, Linda; Marcoux, Betty; Jay, M. Ellen; England, Jennifer</p> <p>2003-01-01</p> <p>Includes five articles on conference <span class="hlt">experiences</span>: preplanning for a library conference; top ten reasons to attend an AASL (American Association of School Librarians) national conference; why should you bother to fill out a conference evaluation form; a case for conferences; and AASL tours. (LRW)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=steady+AND+state&pg=6&id=EJ891978','ERIC'); return false;" href="http://eric.ed.gov/?q=steady+AND+state&pg=6&id=EJ891978"><span id="translatedtitle"><span class="hlt">Experimenting</span> with Electric Trains</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Wick, D. P.; Ramsdell, M. W.</p> <p>2007-01-01</p> <p>A simple <span class="hlt">experiment</span> can be performed to characterize the relationship between applied voltage and velocity (steady state and transient) for an electric toy train. The results can be used by teams of students to solve a series of challenges in which they attempt to predict the performance of a particular train. Some sample challenges might include…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=Magnetic+AND+fluid&pg=2&id=EJ275158','ERIC'); return false;" href="http://eric.ed.gov/?q=Magnetic+AND+fluid&pg=2&id=EJ275158"><span id="translatedtitle">Notes on <span class="hlt">Experiments</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Physics Education, 1983</p> <p>1983-01-01</p> <p>An <span class="hlt">experiment</span> on cooling by convection, holographic processes achieved using optical fibers and observation of magnetic domains are described. Also describes four demonstrations: mechanical resonance on air track, independence of horizontal/vertical motion, motion of sphere in fluid medium, and light scattering near the critical point. (JN)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=ultrasonics&pg=3&id=EJ507340','ERIC'); return false;" href="http://eric.ed.gov/?q=ultrasonics&pg=3&id=EJ507340"><span id="translatedtitle"><span class="hlt">Experiments</span> with Ultrasonic Transducers.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Greenslade, Thomas R., Jr.</p> <p>1994-01-01</p> <p>Discusses the use of 40 kHz ultrasonic transducers to study wave phenomena. Determines that the resulting wavelength of 9 mm allows acoustic <span class="hlt">experiments</span> to be performed on a tabletop. Includes transducer characteristics and activities on speed of sound, reflection, double- and single-slit diffraction, standing waves, acoustical zone plate, and…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=sound+AND+temperature&pg=4&id=EJ024268','ERIC'); return false;" href="http://eric.ed.gov/?q=sound+AND+temperature&pg=4&id=EJ024268"><span id="translatedtitle"><span class="hlt">Experiments</span> in Pulsed Ultrasonics</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Palmer, S. B.; Forster, G. A.</p> <p>1970-01-01</p> <p>Describes and apparatus designed to generate and detect pulsed ultrasonics in solids and liquids over the frequency range 1-20 MHz. <span class="hlt">Experiments</span> are suggested for velocity of sound, elastic constant and ultrasonic attenuation measurements on various materials over a wide temperature range. The equipment should be useful for demonstration purposes.…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=saturn&pg=2&id=EJ455656','ERIC'); return false;" href="http://eric.ed.gov/?q=saturn&pg=2&id=EJ455656"><span id="translatedtitle">NASSC: A Businessman's <span class="hlt">Experience</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Rundell, C. Reid</p> <p>1992-01-01</p> <p>From a businessman's viewpoint, the New American Schools Development Corporation (NASDC) offers a singular opportunity to help this nation create a Saturn-like <span class="hlt">experience</span> for education, school by school. As Saturn revolutionized the way cars are built, NASDC can revolutionize the way children are taught. The 11 winning projects have real potential…</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li class="active"><span>16</span></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_16 --> <div id="page_17" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li class="active"><span>17</span></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="321"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=simultaneous&pg=6&id=EJ931199','ERIC'); return false;" href="http://eric.ed.gov/?q=simultaneous&pg=6&id=EJ931199"><span id="translatedtitle">A Harmonic Motion <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Gluck, P.; Krakower, Zeev</p> <p>2010-01-01</p> <p>We present a unit comprising theory, simulation and <span class="hlt">experiment</span> for a body oscillating on a vertical spring, in which the simultaneous use of a force probe and an ultrasonic range finder enables one to explore quantitatively and understand many aspects of simple and damped harmonic motions. (Contains 14 figures.)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=chemistry+AND+science+AND+fair&pg=3&id=EJ193255','ERIC'); return false;" href="http://eric.ed.gov/?q=chemistry+AND+science+AND+fair&pg=3&id=EJ193255"><span id="translatedtitle">Respiration: An <span class="hlt">Experiment</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Stott, P. A.</p> <p>1978-01-01</p> <p>This article describes how a gas chromatograph may be used to determine the amount of carbon dioxide in exhaled air. The <span class="hlt">experiment</span> has been used as part of a demonstration exercise at a local science fair and proved of interest to all age groups. (Author/BB)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014JPhCS.513c2093S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014JPhCS.513c2093S"><span id="translatedtitle">Self managing <span class="hlt">experiment</span> resources</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Stagni, F.; Ubeda, M.; Tsaregorodtsev, A.; Romanovskiy, V.; Roiser, S.; Charpentier, P.; Graciani, R.</p> <p>2014-06-01</p> <p>Within this paper we present an autonomic Computing resources management system, used by LHCb for assessing the status of their Grid resources. Virtual Organizations Grids include heterogeneous resources. For example, LHC <span class="hlt">experiments</span> very often use resources not provided by WLCG, and Cloud Computing resources will soon provide a non-negligible fraction of their computing power. The lack of standards and procedures across <span class="hlt">experiments</span> and sites generated the appearance of multiple information systems, monitoring tools, ticket portals, etc... which nowadays coexist and represent a very precious source of information for running HEP <span class="hlt">experiments</span> Computing systems as well as sites. These two facts lead to many particular solutions for a general problem: managing the <span class="hlt">experiment</span> resources. In this paper we present how LHCb, via the DIRAC interware, addressed such issues. With a renewed Central Information Schema hosting all resources metadata and a Status System (Resource Status System) delivering real time information, the system controls the resources topology, independently of the resource types. The Resource Status System applies data mining techniques against all possible information sources available and assesses the status changes, that are then propagated to the topology description. Obviously, giving full control to such an automated system is not risk-free. Therefore, in order to minimise the probability of misbehavior, a battery of tests has been developed in order to certify the correctness of its assessments. We will demonstrate the performance and efficiency of such a system in terms of cost reduction and reliability.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/21614815','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/21614815"><span id="translatedtitle">[Near-death <span class="hlt">experiences</span>].</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Bonilla, Ernesto</p> <p>2011-03-01</p> <p>Near-death <span class="hlt">experiences</span> (NDE) are lucid events that take place when a person is so physically compromised that he would die if its condition does not improve. He is unconscious, without heartbeats and breath, and with a flat-line electroencephalogram. NDE may include some of the following elements: Out of the body <span class="hlt">experiences</span> or separation of consciousness from the physical body, increase in sensory perception and intense emotions, travel into or through a tunnel, encounter with a brilliant light and mystical beings, deceased relatives or friends, a sense of alteration in time and space, visualization of unworldly realms and a special knowledge, encounter with a barrier or boundary, and a return to the body, either voluntary or involuntary. The fact that children NDE are similar to adult NDE is an evidence that these <span class="hlt">experiences</span> are real and not due to pre-existing beliefs, cultural influences or previous <span class="hlt">experiences</span> in the present life. The characteristics of NDE are similar worldwide. No evidence supports the physiological, psychological, neurochemical, and neuroanatomical hypothesis proposed to explain the NDE. Multifactorial models, based on the combination of all of them (brain anoxia or hypoxia, release of serotonin, endorphins and ketamine-like compounds) have also been proposed. Although physiological, psychological, and socio-cultural factors could interact in the NDE, the hypothesis proposed consist essentially in unsupported speculations about what might be happening during the NDE. PMID:21614815</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20000116204','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20000116204"><span id="translatedtitle">Remote Agent <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Benard, Doug; Dorais, Gregory A.; Gamble, Ed; Kanefsky, Bob; Kurien, James; Millar, William; Muscettola, Nicola; Nayak, Pandu; Rouquette, Nicolas; Rajan, Kanna; Norvig, Peter (Technical Monitor)</p> <p>2000-01-01</p> <p>Remote Agent (RA) is a model-based, reusable artificial intelligence (At) software system that enables goal-based spacecraft commanding and robust fault recovery. RA was flight validated during an <span class="hlt">experiment</span> on board of DS1 between May 17th and May 21th, 1999.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=redox+AND+reactions&pg=6&id=EJ285870','ERIC'); return false;" href="http://eric.ed.gov/?q=redox+AND+reactions&pg=6&id=EJ285870"><span id="translatedtitle">Cyclic Voltammetry <span class="hlt">Experiment</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Van Benschoten, James J.; And Others</p> <p>1983-01-01</p> <p>Describes a three-part <span class="hlt">experiment</span> designed to introduce cyclic voltammetry to graduate/undergraduate students. Part 1 demonstrates formal reduction potential, redox electron transfer, diffusion coefficient, and electrochemical reversibility. Part 2 investigates electrochemical behavior of acetaminophen. Part 3 examines such experimental variables…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20020038863','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20020038863"><span id="translatedtitle">Microheater Array Boiling <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Kim, Jungho; McQuillen, John; Balombin, Joe</p> <p>2002-01-01</p> <p>By conducting pool boiling tests in microgravity, the effect of buoyancy on the overall boiling process and the relative magnitude of other phenomena can be assessed. Data from KC-135 and sounding rocket <span class="hlt">experiments</span> indicate little effect of gravity on boiling heat transfer at wall superheats below 25 C, despite vast differences in bubble behavior between gravity levels. In microgravity, a large primary bubble, surrounded by smaller satellite bubbles, moved over the surface, occasionally causing nucleation. Once formed, the primary bubble size remained constant for a given superheat, indicating evaporation at the bubble base is balanced with condensation on the bubble cap. The primary bubble's size increased with wall superheat. Most heaters under the primary bubble had low heat transfer rates, suggesting liquid dryout. Strong Marangoni convection developed in microgravity, forming a 'jet' into the bulk liquid that forced the bubble onto the heater. An <span class="hlt">experiment</span> is being designed for the. Microgravity Science Glovebox. This <span class="hlt">experiment</span> uses two 96 element microheater arrays, 2.7 and 7.0 mm in size. These heaters are individually controlled to operate at a constant temperature, measuring local heat fluxes as a function of time and space. Most boiling <span class="hlt">experiments</span> operate at constant wall heat flux with larger heaters, allowing only time and space-averaged measurements. Each heater is about the bubble departure size in normal gravity, but significantly smaller than the bubble departure size in reduced gravity.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/25855417','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/25855417"><span id="translatedtitle">A Horrible <span class="hlt">Experiment</span>.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Weiss, Michael H</p> <p>2015-07-01</p> <p>A patient presented to my office who had been tortured in the course of a wartime medical <span class="hlt">experiment</span> many years ago. Seeing him prompted me to explore my personal reaction to his case and to reflect on the history of the ethics of medical experimentation in the 20th century. PMID:25855417</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=PRIMUS&pg=6&id=EJ1042737','ERIC'); return false;" href="http://eric.ed.gov/?q=PRIMUS&pg=6&id=EJ1042737"><span id="translatedtitle">The ALARM <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Gerhardt, Ira</p> <p>2015-01-01</p> <p>An <span class="hlt">experiment</span> was conducted over three recent semesters of an introductory calculus course to test whether it was possible to quantify the effect that difficulty with basic algebraic and arithmetic computation had on individual performance. Points lost during the term were classified as being due to either algebraic and arithmetic mistakes…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://files.eric.ed.gov/fulltext/EJ886990.pdf','ERIC'); return false;" href="http://files.eric.ed.gov/fulltext/EJ886990.pdf"><span id="translatedtitle">Enhance Your Twitter <span class="hlt">Experience</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Miller, Shannon McClintock</p> <p>2010-01-01</p> <p>The author has been encouraging teachers, students, and others to join Twitter and build their personal learning networks (PLNs) ever since she delved into this great social networking site. In this article, she offers a few other tools and tips that can improve the Twitter <span class="hlt">experience</span> of those who have opened up an account and dabbled a bit but…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://files.eric.ed.gov/fulltext/EJ1052428.pdf','ERIC'); return false;" href="http://files.eric.ed.gov/fulltext/EJ1052428.pdf"><span id="translatedtitle">A Vibrating String <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Tsutsumanova, Gichka; Russev, Stoyan</p> <p>2013-01-01</p> <p>A simple <span class="hlt">experiment</span> demonstrating the excitation of a standing wave in a metal string is presented here. Several tasks using the set-up are considered, which help the students to better understand the standing waves, the interaction between electric current and magnetic field and the resonance phenomena. This can serve also as a good lecture…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19770026838&hterms=biomed&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3Dbiomed','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19770026838&hterms=biomed&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3Dbiomed"><span id="translatedtitle">Flight control <span class="hlt">experiences</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Musgrave, F. S.</p> <p>1977-01-01</p> <p>A multidisciplinary medical-management team at mission control provided Skylab crew support by monitoring health, retrieving and compiling experimental data, assisting in the development of flight plans, and by contributing to in-flight procedures and checklists. Real time computers assisted the flight crews in performing medical and other <span class="hlt">experiments</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19720015188&hterms=Flaherty&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3DFlaherty','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19720015188&hterms=Flaherty&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3DFlaherty"><span id="translatedtitle">Apollo window meteoroid <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Cour-Palais, B. G.; Flaherty, R. E.; Brown, M. L.</p> <p>1972-01-01</p> <p>Apollo window meteoroid <span class="hlt">experiment</span> for obtaining data from crater counts and analysis of meteoroid residue combined with fused glass in described. A preliminary estimate of the flux resulting from seven Apollo spacecraft is found to be in agreement with the Surveyor 3 data, but is lower than the model environment.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=book+AND+physiology&id=EJ1013478','ERIC'); return false;" href="http://eric.ed.gov/?q=book+AND+physiology&id=EJ1013478"><span id="translatedtitle"><span class="hlt">Experiences</span> and Outcomes</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Marden, Nicole Y.; Ulman, Leslie G.; Wilson, Fiona S.; Velan, Gary M.</p> <p>2013-01-01</p> <p>Online formative assessments have become increasingly popular; however, formal evidence supporting their educational benefits is limited. This study investigated the impact of online feedback quizzes on the learning <span class="hlt">experiences</span> and outcomes of undergraduate students enrolled in an introductory physiology course. Four quiz models were tested, which…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19910012025','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19910012025"><span id="translatedtitle">The Japanese containerless <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Azuma, Hisao</p> <p>1990-01-01</p> <p>There are three sets of Japanese containerless <span class="hlt">experiments</span>. The first is Drop dynamics research. It consists of acoustic levitation and large amplitude drop oscillation. The second is Optical materials processing in an acoustic levitation furnace. And the third is Electrostatic levitator development by two different Japanese companies.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1995AIPC..320..154P','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1995AIPC..320..154P"><span id="translatedtitle">A cosmic rays <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Pérez Munguía, Gustavo; Pineda de Carías, María Cristina</p> <p>1995-01-01</p> <p>In this paper we present the results of an <span class="hlt">experiment</span> performed to detect the total flux of muons incident over Tegucigalpa (Honduras) the day of the total solar eclipse of the 11 July, 1991; and also a comparison with data obtained before the eclipse and registered in the past years.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/8037','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/8037"><span id="translatedtitle">DSWA calorimeter bomb <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Cunningham, B</p> <p>1998-10-01</p> <p>Two <span class="hlt">experiments</span> were performed in which 25 grams of TNT were detonated inside an expended detonation calorimeter bomb. The bomb had a contained volume of approximately 5.28 liters. In the first <span class="hlt">experiment</span>, the bomb was charged with 3 atmospheres of nitrogen. In the second, it was charged with 2.58 atmospheres (23.1 psi gage) of oxygen. In each <span class="hlt">experiment</span> pressure was monitored over a period of approximately 1200 microseconds after the pulse to the CDU. Monitoring was performed via two 10,000 psi 102AO3 PCB high frequency pressure transducers mounted symmetrically in the lid of the calorimeter bomb. Conditioners used were PCB 482As. The signals from the transducers were recorded in digital format on a multi channel Tektronix scope. The sampling frequency was 10 Mhz (10 samples per microsecond). After a period of cooling following detonation, gas samples were taken and were subsequently submitted for analysis using gas mass spectrometry. Due to a late request for post shot measurement, it was only possible to make a rough estimate of the weight of debris (carbon) remaining in the calorimeter bomb following the second <span class="hlt">experiment</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=menarche&pg=5&id=EJ274930','ERIC'); return false;" href="http://eric.ed.gov/?q=menarche&pg=5&id=EJ274930"><span id="translatedtitle">The <span class="hlt">Experience</span> of Menarche.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Ruble, Diane N.; Brooks-Gunn, Jeanne</p> <p>1982-01-01</p> <p>Examines reactions to menarche and the subsequent effects of this <span class="hlt">experience</span> as a function of preparation for and timing of menarche. A questionnaire including measures of responses about first menstruation, current symptoms, and self-image was completed by 639 girls in fifth through twelfth grades. (Author/MP)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=dielectric&pg=4&id=EJ196723','ERIC'); return false;" href="http://eric.ed.gov/?q=dielectric&pg=4&id=EJ196723"><span id="translatedtitle"><span class="hlt">Experiments</span> in Ice Physics.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Martin, P. F.; And Others</p> <p>1978-01-01</p> <p>Describes <span class="hlt">experiments</span> in ice physics that demonstrate the behavior and properties of ice. Show that ice behaves as an ionic conductor in which charge is transferred by the movement of protons, its electrical conductivity is highly temperature-dependent, and its dielectric properties show dramatic variation in the kilohertz range. (Author/GA)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=plasma+AND+1&pg=3&id=EJ200029','ERIC'); return false;" href="http://eric.ed.gov/?q=plasma+AND+1&pg=3&id=EJ200029"><span id="translatedtitle">Notes on <span class="hlt">Experiments</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Physics Education, 1979</p> <p>1979-01-01</p> <p>Describes the following: use and construction of a lens-pinhole spatial filter assembly to produce expanded beams; how to modify a unilab V. L. F. oscillator to give variable frequencies between .1 Hz and 10 Hz; to use Crookes radiometer quantitatively; and an externally located, movable probe for plasma physics <span class="hlt">experiments</span>, using conventional…</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li class="active"><span>17</span></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_17 --> <div id="page_18" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li class="active"><span>18</span></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="341"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=sulfuric+AND+acid&pg=2&id=EJ270172','ERIC'); return false;" href="http://eric.ed.gov/?q=sulfuric+AND+acid&pg=2&id=EJ270172"><span id="translatedtitle">An NMR Kinetics <span class="hlt">Experiment</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Kaufman, Don; And Others</p> <p>1982-01-01</p> <p>Outlines advantages of and provides background information, procedures, and typical student data for an <span class="hlt">experiment</span> determining rate of hydration of p-methyoxyphenylacetylene (III), followed by nuclear magnetic resonance spectroscopy. Reaction rate can be adjusted to meet time framework of a particular laboratory by altering concentration of…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19760003491','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19760003491"><span id="translatedtitle">Carbon monoxide pollution <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Bortner, M. H.; Dick, R.; Goldstein, H. W.; Grenda, R. N.</p> <p>1975-01-01</p> <p>The <span class="hlt">experiment</span> is designed to obtain data for the investigation of mechanisms by which CO is removed from the earth's atmosphere. The approach uses an orbiting platform to remotely map global CO concentrations and determine vertical CO profiles using a correlation interferometer measurement technique. The instrument is capable of measuring CO over the range of expected atmospheric burdens and of measuring trace atmospheric constituents.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19960034386','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19960034386"><span id="translatedtitle">Parabolic aircraft solidification <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Workman, Gary L. (Principal Investigator); Smith, Guy A.; OBrien, Susan</p> <p>1996-01-01</p> <p>A number of solidification <span class="hlt">experiments</span> have been utilized throughout the Materials Processing in Space Program to provide an experimental environment which minimizes variables in solidification <span class="hlt">experiments</span>. Two techniques of interest are directional solidification and isothermal casting. Because of the wide-spread use of these experimental techniques in space-based research, several MSAD <span class="hlt">experiments</span> have been manifested for space flight. In addition to the microstructural analysis for interpretation of the experimental results from previous work with parabolic flights, it has become apparent that a better understanding of the phenomena occurring during solidification can be better understood if direct visualization of the solidification interface were possible. Our university has performed in several experimental studies such as this in recent years. The most recent was in visualizing the effect of convective flow phenomena on the KC-135 and prior to that were several successive contracts to perform directional solidification and isothermal casting <span class="hlt">experiments</span> on the KC-135. Included in this work was the modification and utilization of the Convective Flow Analyzer (CFA), the Aircraft Isothermal Casting Furnace (ICF), and the Three-Zone Directional Solidification Furnace. These studies have contributed heavily to the mission of the Microgravity Science and Applications' Materials Science Program.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://files.eric.ed.gov/fulltext/EJ790564.pdf','ERIC'); return false;" href="http://files.eric.ed.gov/fulltext/EJ790564.pdf"><span id="translatedtitle"><span class="hlt">Experiments</span> with Patterns</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>de Mestre, Neville</p> <p>2008-01-01</p> <p>This article presents a hands-on <span class="hlt">experiment</span> that covers many areas of high school mathematics. Included are the notions of patterns, proof, triangular numbers and various aspects of problem solving. The problem involves the arrangements of a school of fish using split peas or buttons to represent the fish. (Contains 4 figures.)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=risk+AND+management+AND+committee&pg=7&id=ED028313','ERIC'); return false;" href="http://eric.ed.gov/?q=risk+AND+management+AND+committee&pg=7&id=ED028313"><span id="translatedtitle"><span class="hlt">Experiments</span> with Retraining.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Shultz, George P.; Weber, Arnold R.</p> <p></p> <p>When Armour and Company faced a shutdown of six plants, it joined in a cooperative program of vocational retraining with two labor unions; an Automation Fund Committee was formed, with representation from management, the unions, and "public" (college professors); and an experimental program in Oklahoma City provided <span class="hlt">experience</span> which was applied in…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://files.eric.ed.gov/fulltext/ED378590.pdf','ERIC'); return false;" href="http://files.eric.ed.gov/fulltext/ED378590.pdf"><span id="translatedtitle">The Huck Finn <span class="hlt">Experience</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Levesque, Bonnie; And Others</p> <p></p> <p>This paper describes "The Huck Finn <span class="hlt">Experience</span>," a high motivation interdisciplinary unit that takes students on a 6-week journey back to the life and times of Mark Twain through the fictional character of Huckleberry Finn. The unit described in the paper was designed for eighth-grade students but could be easily adapted to be successful with…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2014she..book.....C&link_type=ABSTRACT','NASAADS'); return false;" href="http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2014she..book.....C&link_type=ABSTRACT"><span id="translatedtitle">Science and Human <span class="hlt">Experience</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Cooper, Leon N.</p> <p>2014-12-01</p> <p>Part I. Science and Society: 1. Science and human <span class="hlt">experience</span>; 2. Does science undermine our values?; 3. Can science serve mankind?; 4. Modern science and contemporary discomfort: metaphor and reality; 5. Faith and science; 6. Art and science; 7. Fraud in science; 8. Why study science? The keys to the cathedral; 9. Is evolution a theory? A modest proposal; 10. The silence of the second; 11. Introduction to Copenhagen; 12. The unpaid debt; Part II. Thought and Consciousness: 13. Source and limits of human intellect; 14. Neural networks; 15. Thought and mental <span class="hlt">experience</span>: the Turing test; 16. Mind as machine: will we rubbish human <span class="hlt">experience</span>?; 17. Memory and memories: a physicist's approach to the brain; 18. On the problem of consciousness; Part III. On the Nature and Limits of Science: 19. What is a good theory?; 20. Shall we deconstruct science?; 21. Visible and invisible in physical theory; 22. <span class="hlt">Experience</span> and order; 23. The language of physics; 24. The structure of space; 25. Superconductivity and other insoluble problems; 26. From gravity to light and consciousness: does science have limits?</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2015she..book.....C&link_type=ABSTRACT','NASAADS'); return false;" href="http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2015she..book.....C&link_type=ABSTRACT"><span id="translatedtitle">Science and Human <span class="hlt">Experience</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Cooper, Leon N.</p> <p>2015-01-01</p> <p>Part I. Science and Society: 1. Science and human <span class="hlt">experience</span>; 2. Does science undermine our values?; 3. Can science serve mankind?; 4. Modern science and contemporary discomfort: metaphor and reality; 5. Faith and science; 6. Art and science; 7. Fraud in science; 8. Why study science? The keys to the cathedral; 9. Is evolution a theory? A modest proposal; 10. The silence of the second; 11. Introduction to Copenhagen; 12. The unpaid debt; Part II. Thought and Consciousness: 13. Source and limits of human intellect; 14. Neural networks; 15. Thought and mental <span class="hlt">experience</span>: the Turing test; 16. Mind as machine: will we rubbish human <span class="hlt">experience</span>?; 17. Memory and memories: a physicist's approach to the brain; 18. On the problem of consciousness; Part III. On the Nature and Limits of Science: 19. What is a good theory?; 20. Shall we deconstruct science?; 21. Visible and invisible in physical theory; 22. <span class="hlt">Experience</span> and order; 23. The language of physics; 24. The structure of space; 25. Superconductivity and other insoluble problems; 26. From gravity to light and consciousness: does science have limits?</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=MSFC-0300170&hterms=gases+combustion&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D60%26Ntt%3Dgases%2Bcombustion','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=MSFC-0300170&hterms=gases+combustion&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D60%26Ntt%3Dgases%2Bcombustion"><span id="translatedtitle">Droplet Combustion <span class="hlt">Experiment</span> Operates</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>2003-01-01</p> <p>Fuel ignites and burns in the Droplet Combustion <span class="hlt">Experiment</span> (DCE) on STS-94 on July 12, 1997, MET:11/07:00 (approximate). DCE used various fuels -- in drops ranging from 1 mm (0.04 inches) to 5 mm (0.2 inches) -- and mixtures of oxidizers and inert gases to learn more about the physics of combustion in the simplest burning configuration, a sphere. The DCE was designed to investigate the fundamental combustion aspects of single, isolated droplets under different pressures and ambient oxygen concentrations for a range of droplet sizes varying between 2 and 5 mm. The <span class="hlt">experiment</span> elapsed time is shown at the bottom of the composite image. The DCE principal investigator was Forman Williams, University of California, San Diego. The <span class="hlt">experiment</span> was part of the space research investigations conducted during the Microgravity Science Laboratory-1R mission (STS-94, July 1-17 1997). Advanced combustion <span class="hlt">experiments</span> will be a part of investigations plarned for the International Space Station. (119KB JPEG, 658 x 982 pixels; downlinked video, higher quality not available) The MPG from which this composite was made is available at http://mix.msfc.nasa.gov/ABSTRACTS/MSFC-0300171.html.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/6595879','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/6595879"><span id="translatedtitle">ATA beam director <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Lee, E.P.; Younger, F.C.; Cruz, G.E.; Nolting, E.</p> <p>1986-06-23</p> <p>This report describes beam director elements for an <span class="hlt">experiment</span> at the Advanced Test Accelerator. The elements described include a vernier magnet for beam aiming, an achromat magnet, and an isolation system for the beam interface. These components are built at small scale for concept testing. (JDH)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=salicylic+AND+acid&id=EJ608827','ERIC'); return false;" href="http://eric.ed.gov/?q=salicylic+AND+acid&id=EJ608827"><span id="translatedtitle"><span class="hlt">Experiments</span> with Aspirin.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Borer, Londa L.; Barry, Edward</p> <p>2000-01-01</p> <p>Presents a series of <span class="hlt">experiments</span> that can be used to demonstrate how aspirin can be synthesized and characterized, how the hydrolysis of aspirin can be used as an introduction to kinetics, and how coordination chemistry (chelation) can be introduced by preparing and characterizing the copper complexes of aspirin and salicylic acid. (Contains over…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/909972','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/909972"><span id="translatedtitle">FLORIDA TOWER FOOTPRINT <span class="hlt">EXPERIMENTS</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>WATSON,T.B.; DIETZ, R.N.; WILKE, R.; HENDREY, G.; LEWIN, K.; NAGY, J.; LECLERC, M.</p> <p>2007-01-01</p> <p>The Florida Footprint <span class="hlt">experiments</span> were a series of field programs in which perfluorocarbon tracers were released in different configurations centered on a flux tower to generate a data set that can be used to test transport and dispersion models. These models are used to determine the sources of the CO{sub 2} that cause the fluxes measured at eddy covariance towers. <span class="hlt">Experiments</span> were conducted in a managed slash pine forest, 10 km northeast of Gainesville, Florida, in 2002, 2004, and 2006 and in atmospheric conditions that ranged from well mixed, to very stable, including the transition period between convective conditions at midday to stable conditions after sun set. There were a total of 15 <span class="hlt">experiments</span>. The characteristics of the PFTs, details of sampling and analysis methods, quality control measures, and analytical statistics including confidence limits are presented. Details of the field programs including tracer release rates, tracer source configurations, and configuration of the samplers are discussed. The result of this <span class="hlt">experiment</span> is a high quality, well documented tracer and meteorological data set that can be used to improve and validate canopy dispersion models.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=insects&pg=6&id=EJ964071','ERIC'); return false;" href="http://eric.ed.gov/?q=insects&pg=6&id=EJ964071"><span id="translatedtitle">Virtual Inquiry <span class="hlt">Experiences</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Harlow, Danielle; Nilsen, Katy</p> <p>2011-01-01</p> <p>Children in classrooms and scientists in laboratories engage in similar activities: they observe, ask questions, and try to explain phenomena. Video conferencing technology can remove the wall between the classroom and the laboratory, bringing children and scientists together. Virtual <span class="hlt">experiences</span> and field trips can provide many of the benefits of…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=CAPACITY+AND+HEAT&pg=3&id=EJ380749','ERIC'); return false;" href="http://eric.ed.gov/?q=CAPACITY+AND+HEAT&pg=3&id=EJ380749"><span id="translatedtitle">Notes on <span class="hlt">Experiments</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Bligh, P. H.; And Others</p> <p>1988-01-01</p> <p>Introduces three physics <span class="hlt">experiments</span> for high school and college classes. Topics include measuring the ratio of heat capacities using a microcomputer and a glass syringe, producing large electric sparks using a variation of a Leyden bucket, and observing transmission line behavior using television signals. Includes descriptions of materials and…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=holograms&pg=3&id=EJ397034','ERIC'); return false;" href="http://eric.ed.gov/?q=holograms&pg=3&id=EJ397034"><span id="translatedtitle">Notes on <span class="hlt">Experiments</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Physics Education, 1989</p> <p>1989-01-01</p> <p>Described are the purposes, laboratory set-ups, and procedures of four classroom <span class="hlt">experiments</span>: ultrasound speedometer; vibrating-bar depth gauge; folding three-dimensional model of equipotential surfaces; and a simple optical system for the reconstruction of images from computer-generated holograms. Diagrams and pictures are provided. (YP)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=centripetal+AND+force&pg=2&id=EJ452124','ERIC'); return false;" href="http://eric.ed.gov/?q=centripetal+AND+force&pg=2&id=EJ452124"><span id="translatedtitle">The Airplane <span class="hlt">Experiment</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Larson, Lee; Grant, Roderick</p> <p>1991-01-01</p> <p>Presents an <span class="hlt">experiment</span> to investigate centripetal force and acceleration that utilizes an airplane suspended on a string from a spring balance. Investigates the possibility that lift on the wings of the airplane accounts for the differences between calculated tension and measured tension on the string. (MDH)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://files.eric.ed.gov/fulltext/EJ1053812.pdf','ERIC'); return false;" href="http://files.eric.ed.gov/fulltext/EJ1053812.pdf"><span id="translatedtitle"><span class="hlt">Experiment</span> with Conical Pendulum</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Tongaonkar, S. S.; Khadse, V. R.</p> <p>2011-01-01</p> <p>Conical pendulum is similar to simple pendulum with the difference that the bob, instead of moving back and forth, swings around in a horizontal circle. Thus, in a conical pendulum the bob moves at a constant speed in a circle with the string tracing out a cone. This paper describes an <span class="hlt">experiment</span> with conical pendulum, with determination of g from…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=first+AND+aid&pg=6&id=EJ974969','ERIC'); return false;" href="http://eric.ed.gov/?q=first+AND+aid&pg=6&id=EJ974969"><span id="translatedtitle">Parent Hearing Aid <span class="hlt">Experiences</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Munoz, Karen; Roberts, Mallory; Mullings, Day; Harward, Richard</p> <p>2012-01-01</p> <p>This study addresses parent <span class="hlt">experiences</span> in obtaining and managing hearing aids for their young child. The purpose was to identify challenges parents encounter to determine what state agencies can do to improve parent access to amplification. Data were collected July through September of 2010; 40 parents of children ages birth to 3 years old…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=Antennas&id=EJ860679','ERIC'); return false;" href="http://eric.ed.gov/?q=Antennas&id=EJ860679"><span id="translatedtitle"><span class="hlt">Experiments</span> with Dipole Antennas</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Kraftmakher, Yaakov</p> <p>2009-01-01</p> <p>Employment of a data-acquisition system for data collection and calculations makes <span class="hlt">experiments</span> with antennas more convenient and less time consuming. The determined directional patterns of the dipole antennas of different lengths are in reasonable agreement with theory. The enhancement of the signal by using a reflector is demonstrated, and a…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19820026072','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19820026072"><span id="translatedtitle">Ice forming <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Vali, G.</p> <p>1982-01-01</p> <p>A low gravity <span class="hlt">experiment</span> to assess the effect of the presence of supercooled cloud droplets on the diffusional growth rate of ice crystals is described. The theoretical work and the feasibility studies are summarized. The nucleation of ice crystals in supercooled clouds is also discussed.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li class="active"><span>18</span></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_18 --> <div id="page_19" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li class="active"><span>19</span></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="361"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=Sound+AND+waves&id=EJ943426','ERIC'); return false;" href="http://eric.ed.gov/?q=Sound+AND+waves&id=EJ943426"><span id="translatedtitle">The Doppler Pendulum <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Lee, C. K.; Wong, H. K.</p> <p>2011-01-01</p> <p>An <span class="hlt">experiment</span> to verify the Doppler effect of sound waves is described. An ultrasonic source is mounted at the end of a simple pendulum. As the pendulum swings, the rapid change of frequency can be recorded by a stationary receiver using a simple frequency-to-voltage converter. The experimental results are in close agreement with the Doppler…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=dye&pg=2&id=EJ936770','ERIC'); return false;" href="http://eric.ed.gov/?q=dye&pg=2&id=EJ936770"><span id="translatedtitle">A Simple Adsorption <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Guirado, Gonzalo; Ayllon, Jose A.</p> <p>2011-01-01</p> <p>The study of adsorption phenomenon is one of the most relevant and traditional physical chemistry <span class="hlt">experiments</span> performed by chemistry undergraduate students in laboratory courses. In this article, we describe an easy, inexpensive, and straightforward way to experimentally determine adsorption isotherms using pieces of filter paper as the adsorbent…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2013EJPh...34..213K','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2013EJPh...34..213K"><span id="translatedtitle"><span class="hlt">Experiments</span> on ferrimagnetism</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Kraftmakher, Yaakov</p> <p>2013-03-01</p> <p>Ferrimagnetism undoubtedly deserves a proper place in the undergraduate laboratory on electricity and magnetism. Four student <span class="hlt">experiments</span> on ferrimagnetism are considered: (i) the hysteresis loops and permeability of a ‘soft’ ferrite; (ii) the differential permeability versus a dc bias; (iii) the frequency dependence of the complex permeability and (iv) the electromagnetic interference suppression by ferrite chokes and beads. Two ferrite cores taken off a low-frequency choke and a power cord are used. The measurements are simple and straightforward and show the important properties of ferrites and their applications. The values of the permeability of the ferrite core determined in <span class="hlt">experiments</span> (i)-(iii) are in reasonable agreement. The frequency dependence of the complex permeability of the ferrites is similar to that given by the manufacturers. The capability of absorbing electromagnetic waves in a definite frequency range shown in <span class="hlt">experiment</span> (iv) demonstrates one of the principles of Stealth technology. The equipment necessary for the <span class="hlt">experiments</span> can be found in many student laboratories.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=happiness+AND+learning&pg=6&id=EJ949007','ERIC'); return false;" href="http://eric.ed.gov/?q=happiness+AND+learning&pg=6&id=EJ949007"><span id="translatedtitle">Reconstructing Playschool <span class="hlt">Experiences</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Einarsdottir, Johanna</p> <p>2011-01-01</p> <p>The current study was conducted with groups of first grade children (aged six years) in two primary schools in Reykjavik in an endeavour to ascertain how they recalled and reconstructed their playschool <span class="hlt">experiences</span>. The children's playschool teachers were co-researchers participating in the data generation; they were, at the same time participants…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=property+AND+management&pg=2&id=EJ741979','ERIC'); return false;" href="http://eric.ed.gov/?q=property+AND+management&pg=2&id=EJ741979"><span id="translatedtitle">Caretaker's <span class="hlt">Experiences</span> of RPL</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Andersson, Per</p> <p>2006-01-01</p> <p>Recognition of prior learning (RPL) involves an idea of "making learning visible"--of valuing knowledge irrespective of how, when and where it is learnt. This is a phenomenographic analysis of how a group of caretakers from a Swedish property management company <span class="hlt">experience</span> participation in an RPL initiative focusing on their vocational competence.…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=effects+AND+columns&pg=2&id=EJ766057','ERIC'); return false;" href="http://eric.ed.gov/?q=effects+AND+columns&pg=2&id=EJ766057"><span id="translatedtitle"><span class="hlt">Experimenting</span> with Woodwind Instruments</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>LoPresto, Michael C.</p> <p>2007-01-01</p> <p>Simple <span class="hlt">experiments</span> involving musical instruments of the woodwind family can be used to demonstrate the basic physics of vibrating air columns in resonance tubes using nothing more than straightforward measurements and data collection hardware and software. More involved experimentation with the same equipment can provide insight into the effects…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=framing+AND+effect&pg=3&id=EJ775360','ERIC'); return false;" href="http://eric.ed.gov/?q=framing+AND+effect&pg=3&id=EJ775360"><span id="translatedtitle"><span class="hlt">Experiences</span> of Collaborative Research</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Kahneman, Daniel</p> <p>2003-01-01</p> <p>The author's personal history of the research that led to his recognition in economics is described, focusing on the process of collaboration and on the <span class="hlt">experience</span> of controversy. The author's collaboration with Amos Tversky dealt with 3 major topics: judgment under uncertainty, decision making, and framing effects. A subsequent collaboration,…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://files.eric.ed.gov/fulltext/ED081606.pdf','ERIC'); return false;" href="http://files.eric.ed.gov/fulltext/ED081606.pdf"><span id="translatedtitle">[Environmental Education <span class="hlt">Experiences</span>].</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Burke County Board of Education, Morganton, NC.</p> <p></p> <p>Environmental/ecological <span class="hlt">experiences</span>, appropriate for elementary grades, are presented in this compilation. Designed as individual units of study, they consider components of the natural environment and in particular the local environment of Burke County, North Carolina. Units are titled: Burke County in a Nutshell, Our Culture, A Tour of the…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=succession&id=ED566558','ERIC'); return false;" href="http://eric.ed.gov/?q=succession&id=ED566558"><span id="translatedtitle">Principal <span class="hlt">Experiences</span> of Succession</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Steele, Farla Gay</p> <p>2015-01-01</p> <p>This multiple case study explored the <span class="hlt">experiences</span> of school principals and the usefulness of Peters' (2011) succession planning model. Ten purposefully selected principals from varying grade levels were interviewed; none reported a formal succession plan, and all had been assistant principals. The study concluded the assistant principal position…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=Journey+AND+life+AND+economics&pg=2&id=EJ878901','ERIC'); return false;" href="http://eric.ed.gov/?q=Journey+AND+life+AND+economics&pg=2&id=EJ878901"><span id="translatedtitle">Personal <span class="hlt">Experiences</span> of China</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Hessler, Peter; Bradeen, Ryan; Wang, Richard; Masalski, Kathleen Woods</p> <p>2010-01-01</p> <p>This article presents four stories of personal <span class="hlt">experiences</span> of China. In "A Journey Between China's Past and Present," Peter Hessler, a former Peace Corps volunteer and author, highlights misconceptions between Chinese and Americans and the desire both peoples share for knowledge about one another. In "Life on Liberation Avenue," Ryan Bradeen…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=Einstein%2c+AND+Albert&id=EJ755326','ERIC'); return false;" href="http://eric.ed.gov/?q=Einstein%2c+AND+Albert&id=EJ755326"><span id="translatedtitle"><span class="hlt">Experiments</span> in Free Fall</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Art, Albert</p> <p>2006-01-01</p> <p>A model lift containing a figure of Albert Einstein is released from the side of a tall building and its free fall is arrested by elastic ropes. This arrangement allows four simple <span class="hlt">experiments</span> to be conducted in the lift to demonstrate the effects of free fall and show how they can lead to the concept of the equivalence of inertial and…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=sound+AND+strings&id=EJ1083287','ERIC'); return false;" href="http://eric.ed.gov/?q=sound+AND+strings&id=EJ1083287"><span id="translatedtitle"><span class="hlt">Experimenting</span> with Guitar Strings</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>LoPresto, Michael C.</p> <p>2006-01-01</p> <p>What follows is a description of a simple <span class="hlt">experiment</span> developed in a non-mathematical general education science course on sound and light for fine arts students in which a guitar is used with data collection hardware and software to verify the properties of standing waves on a string.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=estimated&pg=5&id=EJ984293','ERIC'); return false;" href="http://eric.ed.gov/?q=estimated&pg=5&id=EJ984293"><span id="translatedtitle"><span class="hlt">Experiments</span> on Photoconductivity</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Kraftmakher, Yaakov</p> <p>2012-01-01</p> <p>Computer-assisted <span class="hlt">experiments</span> with CdS and CdSe photoresistors are described. The most important characteristics of the photoresistors are determined: (i) the spectral response, (ii) the photocurrent versus incident radiant power, (iii) the rise and decay time constants and (iv) the frequency response to modulated light. The photoconductivity gain…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=CLEM&pg=3&id=EJ774607','ERIC'); return false;" href="http://eric.ed.gov/?q=CLEM&pg=3&id=EJ774607"><span id="translatedtitle"><span class="hlt">Experiences</span> in Systemic Change</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Thompson, Scott; Clem, Joe; Battino, Wendy; Richter, Kurt; Reigeluth, Charles; Doll, Marcelle; Moore, Julie; Hoo, Janet; Malopinsky, Larissa V.</p> <p>2006-01-01</p> <p>This section describes the systemic change <span class="hlt">experiences</span> in Norfolk Public Schools, Chugach School District, Indianapolis Metropolitan School District of Decatur Township, Ditmas Educational Complex, Georgia Systemic Teacher Education Program, Sun Microsystems, and Azerbaijan. It provides a description of the change process and discusses the…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2006PhTea..44..509L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2006PhTea..44..509L"><span id="translatedtitle"><span class="hlt">Experimenting</span> with Guitar Strings</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>LoPresto, Michael C.</p> <p>2006-11-01</p> <p>What follows is a description of a simple <span class="hlt">experiment</span> developed in a nonmathematical general education science course on sound and light for fine arts students in which a guitar is used with data collection hardware and software to verify the properties of standing waves on a string.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/1036668','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/1036668"><span id="translatedtitle">The MAJORANA <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Guiseppe, V.E.; Keller, C.; Mei, D-M; Perevozchikov, O.; Perumpilly, G.; Thomas, K.; Xiang, W.; Zhang, C.; Aalseth, C.E.; Aguayo, E.; Ely, J.; Fast, J.E.; Hoppe, E.W.; Hossbach, T.W.; Keillor, M.; Kephart, J.D.; Kouzes, R.; Miley, H.S.; Mizouni, L.; Myers, A.W.; Reid, D.; Amman, M.; Bergevin, M.; Chan, Y-D; Detwiler, J.A.; Loach, J.C.; Luke, P.N.; Martin, R.D.; Poon, A.W.P.; Prior, G.; Vetter, K.; Yaver, H.; Avignone, F.T. III; Creswick, R.; Farach, H.; Mizouni, L.; Avignone, Frank Titus; Bertrand Jr, Fred E; Capps, Gregory L; Cooper, Reynold J; Radford, David C; Varner Jr, Robert L; Wilkerson, John F; Yu, Chang-Hong; Back, H.O.; Leviner, L.; Young, A.R.; Back , H.O.; Bai, X.; Hong, H.; Howard, S.; Medlin, D.; Sobolev, V.; Barabash, A.S.; Konovalov, S.I.; Vanyushin, I.; Yumatov, V.; Barbeau, P.S.; Collar, J.I.; Fields, N.; Boswell , M.; Brudanin, V.; Egorov, V.; Gusey, K.; Kochetov, O.; Shirchenko, M.; Timkin, V.; Yakushev, E.; Bugg, W.; Efremenko, M.; Burritt , T.H.; Burritt , T.H.; Busch, M.; Esterline, J.; Swift, G.; Tornow, W.; Hazama, R.; Nomachi, M.; Shima, T.; Finnerty , P.; et al.</p> <p>2011-01-01</p> <p>The Majorana Collaboration is assembling an array of HPGe detectors to search for neutrinoless double-beta decay in {sup 76}Ge. Initially, Majorana aims to construct a prototype module to demonstrate the potential of a future 1-tonne <span class="hlt">experiment</span>. The design and potential reach of this prototype Demonstrator module are presented.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/1092050','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/1092050"><span id="translatedtitle">The Majorana <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Aalseth, Craig E.; Aguayo Navarrete, Estanislao; Amman, M.; Avignone, F. T.; Back, Henning O.; Bai, Xinhua; Barabash, Alexander S.; Barbeau, P. S.; Bergevin, M.; Bertrand, F.; Boswell, M.; Brudanin, V.; Bugg, William; Burritt, Tom H.; Busch, Matthew; Capps, Greg L.; Chan, Yuen-Dat; Collar, J. I.; Cooper, R. J.; Creswick, R.; Detwiler, Jason A.; Diaz, J.; Doe, Peter J.; Efremenko, Yuri; Egorov, Viatcheslav; Ejiri, H.; Elliott, S. R.; Ely, James H.; Esterline, James H.; Farach, H. A.; Fast, James E.; Fields, N.; Finnerty, P.; Fraenkle, Florian; Gehman, Victor M.; Giovanetti, G. K.; Green, M.; Guiseppe, Vincente; Gusey, K.; Hallin, A. L.; Harper, Gregory; Hazama, R.; Henning, Reyco; Hime, Andrew; Hong, H.; Hoppe, Eric W.; Hossbach, Todd W.; Howard, Stanley; Howe, M. A.; Johnson, R. A.; Keeter, K.; Keillor, Martin E.; Keller, C.; Kephart, Jeremy D.; Kidd, M. F.; Knecht, A.; Kochetov, Oleg; Konovalov, S.; Kouzes, Richard T.; LaRoque, B. H.; Leviner, L.; Loach, J. C.; Luke, P.; MacMullin, S.; Marino, Michael G.; Martin, R. D.; Medlin, D.; Mei, Dong-Ming; Miley, Harry S.; Miller, M. L.; Mizouni, Leila; Myers, Allan W.; Nomachi, Masaharu; Orrell, John L.; Peterson, David; Phillips, D.; Poon, Alan; Perevozchikov, O.; Perumpilly, Gopakumar; Prior, Gersende; Radford, D. C.; Reid, Douglas J.; Rielage, Keith; Robertson, R. G. H.; Rodriguez, Larry; Ronquest, M. C.; Salazar, Harold; Schubert, Alexis G.; Shima, T.; Shirchenko, M.; Sobolev, V.; Steele, David; Strain, J.; Swift, Gary; Thomas, K.; Timkin, V.; Tornow, W.; Van Wechel, T. D.; Vanyushin, I.; Varner, R. L.; Vetter, Kai; Vorren, Kris R.; Wilkerson, J. F.; Wolfe, B. A.; Xiang, W.; Yakushev, E.; Yaver, Harold; Young, A.; Yu, Chang-Hong; Yumatov, V.; Zhang, C.</p> <p>2011-08-01</p> <p>The Majorana Collaboration is assembling an array of HPGe detectors to search for neutrinoless double-beta decay in 76Ge. Initially, Majorana aims to construct a prototype module to demonstrate the potential of a future 1-tonne <span class="hlt">experiment</span>. The design and potential reach of this prototype Demonstrator module are presented.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19950058797&hterms=Membrane+separation&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3DMembrane%2Bseparation','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19950058797&hterms=Membrane+separation&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3DMembrane%2Bseparation"><span id="translatedtitle">Permeable membrane <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Slavin, Thomas J.; Cao, Tuan Q.; Kliss, Mark H.</p> <p>1993-01-01</p> <p>The purpose of the Permeable Membrane <span class="hlt">Experiment</span> is to gather flight data on three areas of membrane performance that are influenced by the presence of gravity. These areas are: (1) Liquid/gas phase separation, (2) gas bubble interference with diffusion through porous membranes and (3) wetting characteristics of hydrophilic membrane surfaces. These data are important in understaning the behavior of membrane/liquid/gas interfaces where surface tension forces predominate. The data will be compared with 1-g data already obtained and with predicted micrograviity behavior. The data will be used to develop designs for phase separation and plant nutrient delivery systems and will be available to the life support community for use in developing technologies which employ membranes. A conceptual design has been developed to conduct three membrane <span class="hlt">experiments</span>, in sequence, aboard a single Complex Autonomous Payload (CAP) carrier to be carried in the Shuttle Orbiter payload bay. One <span class="hlt">experiment</span> is conducted for each of the three membrane performance areas under study. These <span class="hlt">experiments</span> are discussed in this paper.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=extrasensory+AND+perception&pg=2&id=EJ205457','ERIC'); return false;" href="http://eric.ed.gov/?q=extrasensory+AND+perception&pg=2&id=EJ205457"><span id="translatedtitle"><span class="hlt">Experiments</span> in ESP.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Guerin, Stephen M.; Guerin, Clark L.</p> <p>1979-01-01</p> <p>Discusses a phenomenon called Extrasensory Perception (ESP) whereby information is gained directly by the mind without the use of the ordinary senses. <span class="hlt">Experiments</span> in ESP and the basic equipment and methods are presented. Statistical evaluation of ESP experimental results are also included. (HM)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19990021250','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19990021250"><span id="translatedtitle">Thermal Control Surfaces <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Wilkes, D. R.</p> <p>1999-01-01</p> <p>This report is the final <span class="hlt">experiment</span> report for the TCSE and summarizes many years of hardware development and analyses. Also included are analyses presented in a number of TCSE papers that were prepared and given at scientific conferences including three LDEF Post-Retrieval Symposiums.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li class="active"><span>19</span></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_19 --> <div id="page_20" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li class="active"><span>20</span></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="381"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://files.eric.ed.gov/fulltext/ED120089.pdf','ERIC'); return false;" href="http://files.eric.ed.gov/fulltext/ED120089.pdf"><span id="translatedtitle">Moments: The Foxfire <span class="hlt">Experience</span>.</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Wigginton, Eliot</p> <p></p> <p>The high school journalism teacher who initiated the Foxfire Project discusses the memorable learning <span class="hlt">experiences</span> and community studies in which students are involved as they develop and publish the Foxfire magazines. The author describes the project objectives and the successfully implemented teaching techniques and learning activities so that…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/23781834','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/23781834"><span id="translatedtitle">Transformations of emotional <span class="hlt">experience</span>.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>de Cortiñas, Lia Pistiner</p> <p>2013-06-01</p> <p>In this paper the author approaches mental pain and the problems in a psychoanalytic treatment of patients with difficulties in the psychic transformation of their emotional <span class="hlt">experiences</span>. The author is interested in the symbolic failure related to the obstruction of development of phantasies, dreams, dream-thoughts, etc. She differentiates symbolization disturbances related to hypertrophic projective identification from a detention of these primitive communications and emotional isolation. She puts forward the conjecture that one factor in the arrest of this development is the detention of projective identifications and that, when this primitive means of communication is re-established in a container-contained relationship of mutual benefit, this initiates the development of a symbolization process that can replace the pathological 'protection'. Another hypothesis she develops is that of inaccessible caesuras that, associated with the detention of projective identification, obstruct any integrative or interactive movement. This caesura and the detention of projective identifications affect mental functions needed for dealing with mental pain. The personality is left with precarious mental equipment for transforming emotional <span class="hlt">experiences</span>. How can a psychoanalytical process stimulate the development of creative symbolization, transforming the emotional <span class="hlt">experiences</span> and leading towards mental growth? The author approaches the clinical problem with the metaphor of the psychic birth of emotional <span class="hlt">experience</span>. The modulation of mental pain in a container-contained relationship is a central problem for the development of the human mind. For discovering and giving a meaning to emotional <span class="hlt">experience</span>, the infant depends on reverie, a function necessary in order to develop an evolved consciousness capable of being aware, which is different from the rudimentary consciousness that perceives but does not understand. The development of mature mental equipment is associated with the</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19930004269','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19930004269"><span id="translatedtitle">Hydrothermal organic synthesis <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Shock, Everett L.</p> <p>1992-01-01</p> <p>The serious scientific debate about spontaneous generation which raged for centuries reached a climax in the nineteenth century with the work of Spallanzani, Schwann, Tyndall, and Pasteur. These investigators demonstrated that spontaneous generation from dead organic matter does not occur. Although no aspects of these <span class="hlt">experiments</span> addressed the issue of whether organic compounds could be synthesized abiotically, the impact of the <span class="hlt">experiments</span> was great enough to cause many investigators to assume that life and its organic compounds were somehow fundamentally different than inorganic compounds. Meanwhile, other nineteenth-century investigators were showing that organic compounds could indeed be synthesized from inorganic compounds. In 1828 Friedrich Wohler synthesized urea in an attempt to form ammonium cyanate by heating a solution containing ammonia and cyanic acid. This <span class="hlt">experiment</span> is generally recognized to be the first to bridge the artificial gap between organic and inorganic chemistry, but it also showed the usefulness of heat in organic synthesis. Not only does an increase in temperature enhance the rate of urea synthesis, but Walker and Hambly showed that equilibrium between urea and ammonium cyanate was attainable and reversible at 100 C. Wohler's synthesis of urea, and subsequent syntheses of organic compounds from inorganic compounds over the next several decades dealt serious blows to the 'vital force' concept which held that: (1) organic compounds owe their formation to the action of a special force in living organisms; and (2) forces which determine the behavior of inorganic compounds play no part in living systems. Nevertheless, such progress was overshadowed by Pasteur's refutation of spontaneous generation which nearly extinguished experimental investigations into the origins of life for several decades. Vitalism was dealt a deadly blow in the 1950's with Miller's famous spark-discharge <span class="hlt">experiments</span> which were undertaken in the framework of the Oparin</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015APS..SHK.E4002W','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015APS..SHK.E4002W"><span id="translatedtitle">Analysis of NIF <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Wang, Yi-Ming</p> <p>2015-06-01</p> <p>A minimal energy implosion-scaling model was recently developed to characterize the physical properties of the hot spot in terms of the peak implosion energy. In this model, the hot spot energy, volume, pressure, mass and areal density at the stagnation time are uniquely determined by the peak implosion velocity, the equation of state and the adiabat of the pusher and the DT fuel (cold and hot) at the peak implosion time. In this work, we apply this model to a number of published low-foot and high-foot <span class="hlt">experiments</span> performed at the National Ignition Facility. Our model analysis is in a good agreement with the experimental data when a high adiabat is assumed for both low and high foot <span class="hlt">experiments</span>. Implications of the results are discussed. This work was performed under the auspices of the U.S. Department of Energy by the Los Alamos National Laboratory under Contract No. W-7405-ENG-36.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/5757684','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/5757684"><span id="translatedtitle">Gross decontamination <span class="hlt">experiment</span> report</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Mason, R.; Kinney, K.; Dettorre, J.; Gilbert, V.</p> <p>1983-07-01</p> <p>A Gross Decontamination <span class="hlt">Experiment</span> was conducted on various levels and surfaces of the TMI - Unit 2 reactor building in March 1982. The polar crane, D-rings, missile shields, refueling canals, refueling bridges, equipment, and elevations 305' and 347'-6'' were flushed with low pressure water. Additionally, floor surfaces on elevation 305' and floor surfaces and major pieces of equipment on elevation 347'-6'' were sprayed with high pressure water. Selective surfaces were decontaminated with a mechanical scrubber and chemicals. Strippable coating was tested and evaluated on equipment and floor surfaces. The effectiveness, efficiency, and safety of several decontamination techniques were established for the large, complex decontamination effort. Various decontamination equipment was evaluated and its effectiveness was documented. Decontamination training and procedures were documented and evaluated, as were the support system and organization for the <span class="hlt">experiment</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19930019538','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19930019538"><span id="translatedtitle">Return flux <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Tveekrem, June L.</p> <p>1992-01-01</p> <p>All spacecraft emit molecules via outgassing, thruster plumes, vents, etc. The return flux is the portion of those molecules that scatter from the ambient atmosphere and return to the spacecraft. Return flux allows critical spacecraft surfaces to become contaminated even when there is no direct line of sight between the contamination source and the critical surface. Data from the Long Duration Exposure Facility (LDEF) show that contamination of LDEF surfaces could not have come entirely from direct flux. The data suggest significant return flux. Several computer models have been developed to simulate return flux, but the predictions have never been verified in orbit. Large uncertainties in predictions lead to overly conservative spacecraft designs. The purpose of the REturn FLux <span class="hlt">EXperiment</span> (REFLEX) is to fly a controlled <span class="hlt">experiment</span> that can be directly compared with predictions from several models.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/6600673','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/6600673"><span id="translatedtitle">Antimatter gravity <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Brown, R.E.; Camp, J.B.; Darling, T.W.</p> <p>1990-01-01</p> <p>An <span class="hlt">experiment</span> is being developed to measure the acceleration of the antiproton in the gravitational field of the earth. Antiprotons of a few MeV from the LEAR facility at CERN will be slowed, captured, cooled to a temperature of about 10 K, and subsequently launched a few at a time into a drift tube where the effect of gravity on their motion will be determined by a time-of-flight method. Development of the <span class="hlt">experiment</span> is proceeding at Los Alamos using normal matter. The fabrication of a drift tube that will produce a region of space in which gravity is the dominant force on moving ions is of major difficulty. This involves a study of methods of minimizing the electric fields produced by spatially varying work functions on conducting surfaces. Progress in a number of areas is described, with stress on the drift-tube development.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4737432','PMC'); return false;" href="http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4737432"><span id="translatedtitle">Future flavour physics <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p></p> <p>2015-01-01</p> <p>The current status of flavour physics and the prospects for present and future <span class="hlt">experiments</span> will be reviewed. Measurements in B‐physics, in which sensitive probes of new physics are the CKM angle γ, the Bs mixing phase ϕs, and the branching ratios of the rare decays B(s)0→μ+μ− , will be highlighted. Topics in charm and kaon physics, in which the measurements of ACP and the branching ratios of the rare decays K→πνν¯ are key measurements, will be discussed. Finally the complementarity of the future heavy flavour <span class="hlt">experiments</span>, the LHCb upgrade and Belle‐II, will be summarised. PMID:26877543</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/882411','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/882411"><span id="translatedtitle">Electronics for Satellite <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Johnson, Robert P.; /UC, Santa Cruz</p> <p>2006-05-16</p> <p>The tracking detector for the LAT science instrument on the GLAST mission is an example of a large-scale particle detection system built primarily by particle physicists for space flight within the context of a NASA program. The design and fabrication model in most ways reflected practice and <span class="hlt">experience</span> from particle physics, but the quality assurance aspects were guided by NASA. Similarly, most of the electronics in the LAT as a whole were designed and built by staff at a particle physics lab. This paper reports on many of the challenges and lessons learned in the <span class="hlt">experience</span> of designing and building the tracking detector and general LAT electronics for use in the NASA GLAST mission.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19840020181','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19840020181"><span id="translatedtitle">White Cliffs: Operating <span class="hlt">Experience</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Kaneff, S.</p> <p>1984-01-01</p> <p>The fourteen dish white cliffs solar power station area is remote and subject to extreme environmental conditions, solution of the associated problems required careful and thoughtful attention and the application of resources. Notwithstanding the wide range and harshness of conditions, the difficulties caused by remoteness and the lack of a technological base and the need for relatively rapid demonstration of success, the project has had a very positive outcome. Qualitative and quantitative information and lessons are now available to enable considerable simplifications to be made for a new system, reducing both hardware and operation and maintenance costs. <span class="hlt">Experience</span> and lessons are presented, particularly in relation to: system performance in various environmental conditions; design philosophies for collectors, the array, control systems, engine and plant; operation and maintenance strategies and cost reducing possibilities. <span class="hlt">Experience</span> so far gives encouragement for the future of such paraboloidal dish systems in appropriate areas.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19760039882&hterms=Education+Rural&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3DEducation%2BRural','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19760039882&hterms=Education+Rural&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3DEducation%2BRural"><span id="translatedtitle">Health Education Telecommunications <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Whalen, A. A.</p> <p>1975-01-01</p> <p>The Health/Education Telecommunications <span class="hlt">Experiment</span> carried out with Applications Technology Satellite-6 is described. The <span class="hlt">experiment</span> tested the effectiveness of color television broadcasts to over 120 low-cost receivers in rural areas. Five types of earth stations were involved: receive-only terminals (ROT), an intensive terminal consisting of the ROT plus a VHF transmitter and receiver; comprehensive S and C-band terminals having the capability of transmitting the video signal plus four audio channels; and the main originating stations. Additional supporting elements comprise 120 video receive terminals, 51 telephony transceivers, and 8 video originating terminals of 3 different parts. Technical parameters were measured to within 1 dB of the calculated values.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19920041696&hterms=wave+length&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3Dwave%2Blength','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19920041696&hterms=wave+length&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3Dwave%2Blength"><span id="translatedtitle">The gravitational wave <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Bertotti, B.; Ambrosini, R.; Asmar, S. W.; Brenkle, J. P.; Comoretto, G.; Giampieri, G.; Less, L.; Messeri, A.; Wahlquist, H. D.</p> <p>1992-01-01</p> <p>Since the optimum size of a gravitational wave detector is the wave length, interplanetary dimensions are needed for the mHz band of interest. Doppler tracking of Ulysses will provide the most sensitive attempt to date at the detection of gravitational waves in the low frequency band. The driving noise source is the fluctuations in the refractive index of interplanetary plasma. This dictates the timing of the <span class="hlt">experiment</span> to be near solar opposition and sets the target accuracy for the fractional frequency change at 3.0 x 10 exp -14 for integration times of the order of 1000 sec. The instrumentation utilized by the <span class="hlt">experiment</span> is distributed between the radio systems on the spacecraft and the seven participating ground stations of the Deep Space Network and Medicina. Preliminary analysis is available of the measurements taken during the Ulysses first opposition test.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19910016196','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19910016196"><span id="translatedtitle">Stirling machine operating <span class="hlt">experience</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Ross, Brad; Dudenhoefer, James E.</p> <p>1991-01-01</p> <p>Numerous Stirling machines have been built and operated, but the operating <span class="hlt">experience</span> of these machines is not well known. It is important to examine this operating <span class="hlt">experience</span> in detail, because it largely substantiates the claim that Stirling machines are capable of reliable and lengthy lives. The amount of data that exists is impressive, considering that many of the machines that have been built are developmental machines intended to show proof of concept, and were not expected to operate for any lengthy period of time. Some Stirling machines (typically free-piston machines) achieve long life through non-contact bearings, while other Stirling machines (typically kinematic) have achieved long operating lives through regular seal and bearing replacements. In addition to engine and system testing, life testing of critical components is also considered.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/166367','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/166367"><span id="translatedtitle">The PHOBOS <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Betts, R.R.</p> <p>1995-08-01</p> <p>PHOBOS is an <span class="hlt">experiment</span> designed to study Au-Au collisions at RHIC. The apparatus consists of a 4{pi} multiplicity array and two spectrometer arms. The <span class="hlt">experiment</span> is designed to measure the polar and azimuthal angles of most particles produced in the collisions and whether they are charged particles or photons. For approximately 1% of these particles, the two spectrometer arms will measure their properties in great detail. This includes many of the particles near mid-rapidity which are expected to show the most striking effects of any new physics which may occur. PHOBOS has proceeded from the Letter of Intent stage through Proposal and Conceptual Design Review to Construction Approval. It is anticipated that data taking will commence in 1999 when RHIC first provides beam.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/977685','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/977685"><span id="translatedtitle">Cibola flight <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Roussel-Dupre, D.; Caffrey, M. P.</p> <p>2004-01-01</p> <p>Los Alamos National Laboratory is building the Cibola Flight <span class="hlt">Experiment</span> (CFE), a reconfigurable processor payload intended for a Low Earth Orbit system. It will survey portions of the VHF and UHF radio spectra. The <span class="hlt">experiment</span> uses networks of reprogrammable, Field Programmable Gate Arrays (FPGAs) to process the received signals for ionospheric and lightning studies. The objective is to validate the on-orbit use of commercial, reconfigurable FPGA technology utilizing several different single-event upset mitigation schemes. It will also detect and measure impulsive events that occur in a complex background. Surrey Satellite Technology, Ltd (SSTL) is building the small host satellite, CFESat, based upon SSTL's disaster monitoring constellation (DMC) and Topsat mission satellite designs. The CFESat satellite will be launched by the Space Test Program in September 2006 on the US Air Force Evolved Expendable Launch Vehicle (EELV) using the EELV's Secondary Payload Adapter (ESPA) that allows up to six small satellites to be launched as 'piggyback' passengers with larger spacecraft.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19820011408&hterms=space+experiment+cost+control&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3Dspace%2Bexperiment%2Bcost%2Bcontrol','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19820011408&hterms=space+experiment+cost+control&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3Dspace%2Bexperiment%2Bcost%2Bcontrol"><span id="translatedtitle">Structural assembly demonstration <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Stokes, J. W.</p> <p>1982-01-01</p> <p>The <span class="hlt">experiment</span> is of an operational variety, designed to assess crew capability in Large Space System (LSS) assembly. The six Structural Assembly Demonstration <span class="hlt">Experiment</span> objectives include: (1) the establishment of a quantitative correlation between LSS neutral buoyancy simulation and on-orbit assembly operations in order to enhance the validity of those assembly simulations; (2) the quantitative study of the capabilities and mechanics of human assembly in an Extravehicular Activity environment; (3) the further corroboration of the LSS Assembly Analysis cost algorithm through the obtainment of hard data base information; (4) the verification of LSS assembly techniques and timeless, as well as the identification of crew imposed loads and assembly aid requirements and concepts; (5) verification of a Launch/Assembly Platform structure concept for other LSS missions; and (6) lastly, to advance thermal control concepts through a flexible heat pipe.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2006SPIE.6230E..0VM','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2006SPIE.6230E..0VM"><span id="translatedtitle">Collaborative engagement <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Mullens, Katherine; Troyer, Bradley; Wade, Robert; Skibba, Brian; Dunn, Michael</p> <p>2006-05-01</p> <p>Unmanned ground and air systems operating in collaboration have the potential to provide future Joint Forces a significant capability for operations in complex terrain. Collaborative Engagement <span class="hlt">Experiment</span> (CEE) is a consolidation of separate Air Force, Army and Navy collaborative efforts within the Joint Robotics Program (JRP) to provide a picture of the future of unmanned warfare. The Air Force Research Laboratory (AFRL), Material and Manufacturing Directorate, Aerospace Expeditionary Force Division, Force Protection Branch (AFRL/MLQF), The Army Aviation and Missile Research, Development and Engineering Center (AMRDEC) Joint Technology Center (JTC)/Systems Integration Laboratory (SIL), and the Space and Naval Warfare Systems Center - San Diego (SSC San Diego) are conducting technical research and proof of principle <span class="hlt">experiments</span> for an envisioned operational concept for extended range, three dimensional, collaborative operations between unmanned systems, with enhanced situational awareness for lethal operations in complex terrain. This paper describes the work by these organizations to date and outlines some of the plans for future work.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=MSFC-9710944&hterms=shooting&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3Dshooting','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=MSFC-9710944&hterms=shooting&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3Dshooting"><span id="translatedtitle">Shooting Star <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>1997-01-01</p> <p>The Shooting Star <span class="hlt">Experiment</span> (SSE) is designed to develop and demonstrate the technology required to focus the sun's energy and use the energy for inexpensive space Propulsion Research. Pictured is an engineering model (Pathfinder III) of the Shooting Star <span class="hlt">Experiment</span> (SSE). This model was used to test and characterize the motion and deformation of the structure caused by thermal effects. In this photograph, alignment targets are being placed on the engineering model so that a theodolite (alignment telescope) could be used to accurately measure the deformation and deflections of the engineering model under extreme conditions, such as the coldness of deep space and the hotness of the sun as well as vacuum. This thermal vacuum test was performed at the X-Ray Calibration Facility because of the size of the test article and the capabilities of the facility to simulate in-orbit conditions</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=MSFC-0003746&hterms=heart+pdf&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3Dheart%2Bpdf','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=MSFC-0003746&hterms=heart+pdf&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3Dheart%2Bpdf"><span id="translatedtitle">Transient Dentritic Solidification <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>2000-01-01</p> <p>The Transient Dentritic Solidification <span class="hlt">Experiment</span> (TDSE) is being developed as a candidate for flight aboard the International Space Station. TDSE will study the growth of dentrites (treelike crystalline structures) in a transparent material (succinonitrile or SCN) that mimics the behavior of widely used iron-based metals. Basic work by three Space Shuttle flights (STS-62, STS-75, and STS-87) of the Isothermal Dendritic Growth <span class="hlt">Experiment</span> (IDGE) is yielding new insights into virtually all industrially relevant metal and alloy forming operations. The TDSE is similar to IDGE, but will maintain a constant temperature while varying pressure on the dentrites. Shown here is a cutaway of the isothermal bath containing its growth cell at the heart of the TDSE. The principal investigator is Matthew Koss of College of the Holy Cross in Worcester, MA. Note: an Acrobat PDF version is available from http://microgravity.nasa.gov/gallery</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1989RaPC...34..279J','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1989RaPC...34..279J"><span id="translatedtitle">The chernobyl <span class="hlt">experience</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Jeschki, Wolfgang</p> <p></p> <p>Numerous articles have been published about the events which occurred at Chernobyl and the radiological impact on the environment and the public. This article tries to find out which <span class="hlt">experience</span> can be, should be or has already been gained from that accident. The fields which have been studied are: nuclear safety; radiation protection of rescue workers; medical treatment of overexposed persons; decontamination of agricultural land, buildings and cities; behaviour of radionuclides in ecosystems; effects of low doses on human beings.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li class="active"><span>20</span></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_20 --> <div id="page_21" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li class="active"><span>21</span></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="401"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/11541840','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/11541840"><span id="translatedtitle">The Ediacaran <span class="hlt">experiment</span>.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Gould, S J</p> <p>1984-02-01</p> <p>The author reflects on presentations at an annual meeting of the Geological Society of America regarding the differences between Ediacaran fauna fossils and fossils from the Cambrian evolutionary explosion. The theory presented by Dolf Seilacher attributes the differences between Ediacaran animals and their modern counterparts to structure. He proposes that Ediacaran fauna were a failed evolutionary <span class="hlt">experiment</span>. Related comments and meeting presentations are included. PMID:11541840</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70042542','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70042542"><span id="translatedtitle">Apollo lunar sounder <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Phillips, R.J.; Adams, G.F.; Brown, W.E., Jr.; Eggleton, R.E.; Jackson, P.; Jordan, R.; Linlor, W.I.; Peeples, W.J.; Porcello, L.J.; Ryu, J.; Schaber, G.; Sill, W.R.; Thompson, T.W.; Ward, S.H.; Zelenka, J.S.</p> <p>1973-01-01</p> <p>The scientific objectives of the Apollo lunar sounder <span class="hlt">experiment</span> (ALSE) are (1) mapping of subsurface electrical conductivity structure to infer geological structure, (2) surface profiling to determine lunar topographic variations, (3) surface imaging, and (4) measuring galactic electromagnetic radiation in the lunar environment. The ALSE was a three-frequency, wide-band, coherent radar system operated from lunar orbit during the Apollo 17 mission.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/pages/biblio/1201511-lux-experiment','SCIGOV-DOEP'); return false;" href="http://www.osti.gov/pages/biblio/1201511-lux-experiment"><span id="translatedtitle">The LUX <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/pages">DOE PAGESBeta</a></p> <p>Akerib, D. S.; Araújo, H. M.; Bai, X.; Bailey, A. J.; Balajthy, J.; Bernard, E.; Bernstein, A.; Bradley, A.; Byram, D.; Cahn, S. B.; et al</p> <p>2015-03-24</p> <p>We present the status and prospects of the LUX <span class="hlt">experiment</span>, which employs approximately 300 kg of two-phase xenon to search for WIMP dark matter interactions. The LUX detector was commissioned at the surface laboratory of the Sanford Underground Research Facility in Lead, SD, between December 2011 and February 2012 and the detector has been operating underground since January, 2013. These proceedings review the results of the commissioning run as well as the status of underground data-taking.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1985EOSTr..66..603B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1985EOSTr..66..603B"><span id="translatedtitle">Active Seismic Imaging <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Berge, Patricia A.; Dawson, Phillip B.; Evans, John R.</p> <p></p> <p>In September 1985 the U.S. Geological Survey (USGS) and Lawrence Livermore National Laboratory (LLNL) will conduct an active seismic <span class="hlt">experiment</span> in the Medicine Lake area of northern California. The work is supported by the Geothermal Research Program of USGS and by the Geothermal and Hydropower Technologies Division of the U.S. Department of Energy. We invite interested organizations or individuals to record our explosions from Medicine Lake volcano and surrounding areas not covered by the USGS-LLNL array.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2007PhyEd..42..296L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2007PhyEd..42..296L"><span id="translatedtitle"><span class="hlt">Experimenting</span> with woodwind instruments</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Lo Presto, Michael C.</p> <p>2007-05-01</p> <p>Simple <span class="hlt">experiments</span> involving musical instruments of the woodwind family can be used to demonstrate the basic physics of vibrating air columns in resonance tubes using nothing more than straightforward measurements and data collection hardware and software. More involved experimentation with the same equipment can provide insight into the effects of holes in the tubing and other factors that make simple tubes useful as musical instruments.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=fly&pg=3&id=EJ860264','ERIC'); return false;" href="http://eric.ed.gov/?q=fly&pg=3&id=EJ860264"><span id="translatedtitle">The Blowgun Demonstration <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Tsukamoto, Koji; Uchino, Masanori</p> <p>2008-01-01</p> <p>We have found that a simple demonstration <span class="hlt">experiment</span> using a match or a cotton swab and a drinking straw or an acrylic pipe serves as an effective introduction to dynamics. The most basic apparatus has a cotton swab serving as a dart and the straw as the blowgun. When blown from a starting point near the exit end of the straw, the cotton swab does…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/12468','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/12468"><span id="translatedtitle">Localized wave pulse <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Chambers, D L; Henderson, T L; Krueger, K L; Lewis, D K; Zilkowski, R N</p> <p>1999-06-01</p> <p>The Localized Wave project of the Strategic System Support Program has recently finished an <span class="hlt">experiment</span> in cooperation with the Advanced SONAR group of the Applied Research Laboratory of the University of Texas at Austin. The purpose of the <span class="hlt">experiment</span> was three-fold. They wanted to see if (1) the LW pulse could propagate over significant distances, to see if (2) a new type of array and drive system specifically designed for the pulse would increase efficiency over single frequency tone bursts, and to see if (3) the complexity of our 24 channel drivers resulted in better efficiency than a single equivalent pulse driving a piston. In the <span class="hlt">experiment</span>, several LW pulses were launched from the Lake Travis facility and propagated over distances of either 100 feet or 600 feet, through a thermocline for the 600 foot measurements. The results show conclusively that the Localized Wave will propagate past the near field distance. The LW pulses resulted in extremely broad frequency band width pulses with narrow spatial beam patterns and unmeasurable side lobes. Their array gain was better than most tone bursts and further, were better than their equivalent piston pulses. This marks the first test of several Low Diffraction beams against their equivalent piston pulses, as well as the first propagation of LW pulses over appreciable distances. The LW pulse is now proven a useful tool in open water, rather than a laboratory curiosity. The experimental system and array were built by ARL, and the <span class="hlt">experiments</span> were conducted by ARL staff on their standard test range. The 600 feet measurements were made at the farthest extent of that range.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20160010224','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20160010224"><span id="translatedtitle">Holodeck-ISS <span class="hlt">Experience</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Rainbolt, Phillip</p> <p>2016-01-01</p> <p>For the duration of my internship here at JSC for the summer 2016 session, the main project that I worked on dealt with hybrid reality simulations of the ISS. As an ER6 intern for the spacecraft software division, the main project that I worked alongside others was with regards to the Holodeck Virtual Reality Project, specifically with the ISS <span class="hlt">experience</span>, with the use of the HTC Vive and controllers.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2007foap.conf..647G','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2007foap.conf..647G"><span id="translatedtitle">The OPERA <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Giacomelli, G.; Giorgini, M.; Opera Collaboration</p> <p></p> <p>The physics motivations and the detector design of the long baseline OPERA <span class="hlt">experiment</span> are discussed; OPERA is a hybrid detector made of several types of electronic subdetectors, 2 magnets and lead/nuclear emulsions ``brick'' walls. It is located in the Gran Sasso underground lab, 732 km from CERN, on the CNGS neutrino beam. A summary of the performances and of the physics plans are presented.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20110015641','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20110015641"><span id="translatedtitle">The NASA <span class="hlt">Experience</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Ramos, Alberto</p> <p>2011-01-01</p> <p>Projects assigned to: (1) Testing, fixing, and procuring enclosure systems and components for Kennedy Ground Controls Systems at launch pad B. (2) Organizational spreadsheets for all subsystems involved in the project. (Procurement, parts lists, drawings, purchase requests, etc) (3) Resolve is a project devoted to the lunar rover that will sample lunar soil in an effort to remove the moister and separate the metal from the oxygen to produce drinkable water. I helped with the humidity environmental generator for the <span class="hlt">experiment</span> (moister detector).</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/803416','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/803416"><span id="translatedtitle">The CKM <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Hogan H. Nguyen</p> <p>2002-10-25</p> <p>I describe the CKM <span class="hlt">experiment</span>, a new initiative using the Fermilab Main Injector to obtain {approx} 100 events of the ultra-rare decay mode K{sup +} {yields} {pi}{sup +}{nu}{bar {nu}}. The branching ratio will be used to extract |V*{sub ts}V{sub td}|. Due to the decay mode's theoretical cleanliness, it plays a key role in over-constraining the Standard Model description of CP violation.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015EPJWC.10501002A','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015EPJWC.10501002A"><span id="translatedtitle">The NUCLEON space <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Atkin, E.; Bulatov, V.; Dorokhov, V.; Gorbunov, N.; Filippov, S.; Grebenyuk, V.; Karmanov, D.; Kovalev, I.; Kudryashov, I.; Merkin, M.; Pakhomov, A.; Podorozhny, D.; Polkov, D.; Porokhovoy, S.; Shumikhin, V.; Sveshnikova, L.; Tkachenko, A.; Tkachev, L.; Torochkov, M.; Turundaevskiy, A.; Vasiliev, O.; Voronin, A.</p> <p>2015-12-01</p> <p>The NUCLEON satellite <span class="hlt">experiment</span> is designed to investigate directly, above the atmosphere, the energy spectra of cosmic-ray nuclei and the chemical composition (Z= 1 - 30) at energy range 100 GeV- 1000 TeV. The effective geometric factor is more than 0.2 m2sr for nuclei and 0.06 m2sr for electrons. The planned exposition time is more than 5 years.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014NIMPA.742..139M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014NIMPA.742..139M"><span id="translatedtitle"><span class="hlt">Experiments</span> in space: Summary</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Morselli, Aldo</p> <p>2014-04-01</p> <p>The study of cosmic and gamma-rays has a long history and was at the beginning of what we now call Particle Physics. During the last years a growing number of particle physicists is turning again to Cosmic rays bringing all the latest techniques developed at the big accelerator <span class="hlt">experiments</span> and making CR physics again one of the most stimulating and active field in the study of fundamental physics as the presentations during this conference demonstrate.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016DokPh..61..285I','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016DokPh..61..285I"><span id="translatedtitle">The ANAIS billiard <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Ivanov, A. P.</p> <p>2016-06-01</p> <p>The problem on the motion of a homogeneous ball on a horizontal plane is considered. The existence of the vector first integral independent of the friction character and the motion of the support plane in the horizontal directions is shown. In particular, the velocities of the ball center are identical at the moments of rolling on a motionless plane, which corresponds to <span class="hlt">experiments</span> with the ANAIS billiard table.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19930019544','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19930019544"><span id="translatedtitle">NPB Cesium Space <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Parsons, George M., III</p> <p>1992-01-01</p> <p>Neutral Particle Beam (NPB) weapons systems are planned to perform the ballistic missile defense functions of nuclear weapon/decoy discrimination and warhead kill at appropriate energy levels and ion currents. Negatively charged ions are produced in a specialized ion source and focused into a high quality particle beam. NPB linear accelerators accelerate and steer the negatively charged ions using electric and magnetic fields. After acceleration and steering the neutralizer system strips away extra electrons from ions to form the electrically neutral particle beam. The neutral beam then travels through space to the target unaffected by the Earth's magnetic fields. Continuing technological advances have greatly reduced the size and weight of NPB accelerator systems. Ion current production has been enhanced by over 100 percent with the intermittent addition of cesium at the NPB ion source device. This increase in current is essential to attain the most light weight, compact NPB platforms and minimize expensive launch costs. Addition of cesium into the ion source has been identified by the NPB community as the highest priority risk reduction space <span class="hlt">experiment</span> necessary prior to planned NPB accelerator <span class="hlt">experiments</span> and later weapons systems. The NPB Cesium Space <span class="hlt">Experiment</span> is planned to successfully demonstrate controlled cesium introduction and vaporization into a simulated ion source chamber. Microgravity effects on the cesium deposition will be studied as will the effects of small amounts of cesium on high voltage accelerator components that might be susceptible to electrical insulator break downs. The <span class="hlt">experiment</span> design will simulate as closely as possible the environment, physical and operational characteristics of the actual NPB ion source.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/5192853','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/5192853"><span id="translatedtitle">TRIO-01 <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Clemmer, R.G.; Finn, P.A.; Billone, M.C.; Misra, B.; Greenwood, L.R.; Dyer, F.F.; Dudley, I.T.; Bate, L.C.; Clemmer, E.D.; Fisher, P.W.</p> <p>1984-02-10</p> <p>The TRIO-01 <span class="hlt">experiment</span> was designed to test in-situ tritium recovery and heat transfer performance of a candidate solid breeder, ..gamma..-LiAlO/sub 2/. The results showed that nearly all the tritium generated was recovered. Only <0.1 wppM tritium remained in the solid after irradiation testing. The heat transfer performance showed that temperature profiles can be effectively controlled.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19960004070','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19960004070"><span id="translatedtitle">Alloy undercooling <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Flemings, Merton C.; Matson, Douglas M.</p> <p>1995-01-01</p> <p>The research accomplished during 1995 can be organized into three parts. The first task involves analyzing the results of microgravity <span class="hlt">experiments</span> carried out using TEMPUS hardware during the IML-2 mission on STS-65. The second part was to finalize ground-based experimentation which supported the above flight sample analysis. The final part was to provide technical support for post-flight mission activities specifically aimed at improving TEMPUS performance for potential future missions.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20150016090','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20150016090"><span id="translatedtitle">Fiber Attachment Module <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Agostini, Reinaldo J.</p> <p>2014-01-01</p> <p>Hollow Fiber Membrane Bioreactors (HFMB) are ideal systems for biological pretreatment of wastewater, however, optimization is still underway. The Fiber Attachment Module <span class="hlt">Experiment</span> (FAME) allows the simultaneous testing of potential materials, treatments on these and varying inoculums. Polydimethylsiloxane (PDMS), the material chosen for its ideal oxygen permeation properties, was treated with 1 sodium hydroxide 0.1 M ether for 18 seconds and ultraviolet (UV) irradiation oxygen plasma (OP) exposure for 1 hour. Preliminary chemistry and visual data indicate promising treatments when using OP and sodium hydroxide as treatments for PDMS fibers; however, due to the biological nature of the <span class="hlt">experiment</span>, time is a constraint. Sodium hydroxide treatment chemistry data shows nitrification is occurring as urea and ammonia are decreasing and nitrite is increasing. A higher amount of biofilm can also be observed for this particular case. During the final two weeks of the internship x-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR) and acridine orange (AO) cell counts will be employed for treatment effectiveness on the first batch of treatments (ether and sodium hydroxide). These same strategies will be used for the second batch of <span class="hlt">experiments</span> due in four weeks (2nd week of August).</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19910006619','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19910006619"><span id="translatedtitle">Past <span class="hlt">experience</span> Skylab mission</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Pogue, William</p> <p>1990-01-01</p> <p>The design of the Skylab missions, 1973 to 1974, was intended to exclude any direct handling of hazardous, toxic, or reactive materials. The materials processing facility and multipurpose furnace provided a contained environment for conducting metals melting, brazing, sphere forming, and crystal growth <span class="hlt">experiments</span>. At the end of the third mission, following the completion of all other <span class="hlt">experiments</span>, the materials processing facility was used for a series of flammability <span class="hlt">experiments</span>. The flammability tests were done last because of the contamination expected from the burning of the materials within the facility. The flammability tests demonstrated a number of peculiar effects that have implications for future design (fire detection, location, and suppression/control). Although the results of the flammability tests contain lessons appropriate to planning, a number of events during the flight illustrate situations or conditions that pose considerations beyond the commonly accepted range of concern for safety-related matters. This presentation includes a discussion of: Skylab flammability studies and the implications for fire suppression/control; false fire alarms and the Skylab fire detection system; space environmental effects on materials that are normally benign; spills/release of contaminants; the detrimental effect that the release of non-hazardous materials have on detection systems; and the problem of locating sources/originating point of hazards.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19960022479&hterms=telemedicine&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3Dtelemedicine','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19960022479&hterms=telemedicine&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3Dtelemedicine"><span id="translatedtitle">AMT <span class="hlt">experiment</span> results</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Abbe, Brian S.; Pinck, Deborah S.</p> <p>1995-01-01</p> <p>The Advanced Communications Technology Satellite (ACTS) Mobile Terminal (AMT) <span class="hlt">experiments</span> have provided a terminal technology testbed for the evaluation of K- and Ka-band mobile satellite communications (satcom). Such a system could prove to be highly beneficial for many different commercial and government mobile satcom users. Combining ACTS' highly concentrated spotbeams with the smaller, higher-gain Ka-band antenna technology, results in a system design that can support a much higher throughput capacity than today's commercial configurations. To date, <span class="hlt">experiments</span> in such diverse areas as emergency medical applications, enhanced Personal Communication Services (PCS), disaster recovery assistance, military applications, and general voice and data services have already been evaluated. Other applications that will be evaluated over the next year include telemedicine, ISDN, and television network return feed. Baseline AMT performance results will be presented, including Bit Error Rate (BER) curves and mobile propagation data characterizing the K- and Ka-band mobile satcom channel. In addition, observations from many of the application-specific <span class="hlt">experiments</span> will also be provided.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li class="active"><span>21</span></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_21 --> <div id="page_22" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li class="active"><span>22</span></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="421"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015APS..APR.C5001G','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015APS..APR.C5001G"><span id="translatedtitle"><span class="hlt">Experiments</span> with Electrodynamic Wheels</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Gaul, Nathan; Corey, Daniel; Cordrey, Vincent; Majewski, Walerian</p> <p>2015-04-01</p> <p>Our <span class="hlt">experiments</span> were involving inductive magnetic levitation. A Halbach array is a system in which a series of magnets is arranged in a manner such that the magnetic field is cancelled on one side of the array while strengthening the field on the other. We constructed two circular Halbach wheels, making the strong magnetic field on the outer rim of the ring. Such system is usually dubbed as an Electrodynamic Wheel (EDW). Rotating this wheel around a horizontal axis above a flat conducting surface should induce eddy currents in said surface through the variable magnetic flux. The eddy currents produce, in turn, their own magnetic fields which interact with the magnets of the EDW. We demonstrated that these interactions produce both drag and lift forces on the EDW which can theoretically be used for lift and propulsion of the EDW. The focus of our <span class="hlt">experiments</span> is determining how to maximize the lift-to-drag ratio by the proper choice of the induction element. We will also describe our <span class="hlt">experiments</span> with a rotating circular Halbach array having the strong magnetic field of about 1 T on the flat side of the ring, and acting as a hovercraft.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014IJMPA..2930059L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014IJMPA..2930059L"><span id="translatedtitle">Reactor antineutrino <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Lu, Haoqi</p> <p>2014-09-01</p> <p>Neutrinos are elementary particles in the standard model of particle physics. There are three flavors of neutrinos that oscillate among themselves. Their oscillation can be described by a 3×3 unitary matrix, containing three mixing angles θ12, θ23, θ13, and one CP phase. Both θ12 and θ23 are known from previous <span class="hlt">experiments</span>. θ13 was unknown just two years ago. The Daya Bay <span class="hlt">experiment</span> gave the first definitive nonzero value in 2012. An improved measurement of the oscillation amplitude sin 22(θ 13) = 0.090+0.008-0.009 and the first direct measurement of the \\bar ν e mass-squared difference \\vertΔ m2ee\\vert\\big (2.59+0.19-0.20\\big )×10-3 eV2 were obtained recently. The large value of θ13 boosts the next generation of reactor antineutrino <span class="hlt">experiments</span> designed to determine the neutrino mass hierarchy, such as JUNO and RENO-50.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/5708094','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/5708094"><span id="translatedtitle">Critical <span class="hlt">experiment</span> data archiving</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Koponen, B.L. ); Clayton, E.D.; Doherty, A.L. )</p> <p>1991-01-01</p> <p>Critical <span class="hlt">experiment</span> facilities produced a large number of important data during the past 45 years; however, many useful data remain unpublished. The unpublished material exists in the form of experimenters' logbooks, notes, photographs, material descriptions, etc., This data could be important for computer code validation, understanding the physics of criticality, facility design, or for setting process limits. In the past, criticality specialists have been able to obtain unpublished details by direct contact with the experimenters. Obviously, this will not be possible indefinitely. Most of the US critical <span class="hlt">experiment</span> facilities are now closed, and the experimenters are moving to other jobs, retiring, or otherwise becoming unavailable for this informal assistance. Also, the records are in danger of being discarded or lost during facility closures, cleanup activities, or in storage. A project was begun in 1989 to ensure that important unpublished data from critical <span class="hlt">experiment</span> facilities in the United States are archived and made available as a resource of the US Department of Energy's (DOE's) Nuclear Criticality Information System (NCIS). The objective of this paper is to summarize the project accomplishments to date and bring these activities to the attention of those who might be aware of the location of source information needed for archiving and could assist in getting the materials included in the archive.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015JPhCS.664e2022L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015JPhCS.664e2022L"><span id="translatedtitle">Reproducible <span class="hlt">Experiment</span> Platform</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Likhomanenko, Tatiana; Rogozhnikov, Alex; Baranov, Alexander; Khairullin, Egor; Ustyuzhanin, Andrey</p> <p>2015-12-01</p> <p>Data analysis in fundamental sciences nowadays is an essential process that pushes frontiers of our knowledge and leads to new discoveries. At the same time we can see that complexity of those analyses increases fast due to a) enormous volumes of datasets being analyzed, b) variety of techniques and algorithms one have to check inside a single analysis, c) distributed nature of research teams that requires special communication media for knowledge and information exchange between individual researchers. There is a lot of resemblance between techniques and problems arising in the areas of industrial information retrieval and particle physics. To address those problems we propose Reproducible <span class="hlt">Experiment</span> Platform (REP), a software infrastructure to support collaborative ecosystem for computational science. It is a Python based solution for research teams that allows running computational <span class="hlt">experiments</span> on shared datasets, obtaining repeatable results, and consistent comparisons of the obtained results. We present some key features of REP based on case studies which include trigger optimization and physics analysis studies at the LHCb <span class="hlt">experiment</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016JPhCS.718b2014M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016JPhCS.718b2014M"><span id="translatedtitle">Long Baseline Neutrino <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Mezzetto, Mauro</p> <p>2016-05-01</p> <p>Following the discovery of neutrino oscillations by the Super-Kamiokande collaboration, recently awarded with the Nobel Prize, two generations of long baseline <span class="hlt">experiments</span> had been setup to further study neutrino oscillations. The first generation <span class="hlt">experiments</span>, K2K in Japan, Minos in the States and Opera in Europe, focused in confirming the Super-Kamiokande result, improving the precision with which oscillation parameters had been measured and demonstrating the ντ appearance process. Second generation <span class="hlt">experiments</span>, T2K in Japan and very recently NOνA in the States, went further, being optimized to look for genuine three neutrino phenomena like non-zero values of θ13 and first glimpses to leptonic CP violation (LCPV) and neutrino mass ordering (NMO). The discovery of leptonic CP violation will require third generation setups, at the moment two strong proposals are ongoing, Dune in the States and Hyper-Kamiokande in Japan. This review will focus a little more in these future initiatives.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19940018298','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19940018298"><span id="translatedtitle">ACTS broadband aeronautical <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Abbe, Brian S.; Jedrey, Thomas C.; Estabrook, Polly; Agan, Martin J.</p> <p>1993-01-01</p> <p>In the last decade, the demand for reliable data, voice, and video satellite communication links between aircraft and ground to improve air traffic control, airline management, and to meet the growing demand for passenger communications has increased significantly. It is expected that in the near future, the spectrum required for aeronautical communication services will grow significantly beyond that currently available at L-band. In anticipation of this, JPL is developing an experimental broadband aeronautical satellite communications system that will utilize NASA's Advanced Communications Technology Satellite (ACTS) as a satellite of opportunity and the technology developed under JPL's ACTS Mobile Terminal (AMT) Task to evaluate the feasibility of using K/Ka-band for these applications. The application of K/Ka-band for aeronautical satellite communications at cruise altitudes is particularly promising for several reasons: (1) the minimal amount of signal attenuation due to rain; (2) the reduced drag due to the smaller K/Ka-band antennas (as compared to the current L-band systems); and (3) the large amount of available bandwidth. The increased bandwidth available at these frequencies is expected to lead to significantly improved passenger communications - including full-duplex compressed video and multiple channel voice. A description of the proposed broadband experimental system will be presented including: (1) applications of K/Ka-band aeronautical satellite technology to U.S. industry; (2) the <span class="hlt">experiment</span> objectives; (3) the <span class="hlt">experiment</span> set-up; (4) experimental equipment description; and (5) industrial participation in the <span class="hlt">experiment</span> and the benefits.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1996SPIE.2699..192B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1996SPIE.2699..192B"><span id="translatedtitle">Relay mirror <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Begley, David L.</p> <p>1996-04-01</p> <p>Originating out of a SDIO-funded, Phase 1 study effort, two ground systems and an orbiting EO payload/spacecraft were the primary equipment for the RME. The RME was originally conceived to be a shuttle deployed <span class="hlt">experiment</span>. Shortly after program start, the Challenger disaster occurred, with the promise of extensive delays. A completely new space segment was to be designed incorporating a free-flying spacecraft. During the midphase of the program, a variety of launch vehicles were envisioned to replace the shuttle, requiring the BASD team to design accommodations for Delta, Atlas, and Titan, with a Delta launch being the final solution. The ground systems tracked the spacecraft and illuminated it with green and blue beacon lasers. The Payload <span class="hlt">Experiment</span> Package (PEP) housed the bisection tracker, a key innovation central to the <span class="hlt">experiment</span>. The bisection tracker acquired both beacons and controlled steerable mirrors to accomplish fine tracking of the two cooperative beacons. In the process, the relay mirror was precisely positioned to enable a successful relay of a third infrared laser between the two ground sites via the orbiting spacecraft. Many of the key technologies employed in the PEP were originally developed for Ball laser communications research and development programs and other laser pointing efforts. The WAVE sensor package, built by ATA and integrated by Ball, measured the vibrations of the optical base structure on which it was mounted. These spacecraft vibration data are critical to the accurate pointing of space laser communication terminals.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2015IAUGA..2257869L&link_type=ABSTRACT','NASAADS'); return false;" href="http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2015IAUGA..2257869L&link_type=ABSTRACT"><span id="translatedtitle">The QUIJOTE <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>López-Caniego, Marcos</p> <p>2015-08-01</p> <p>The QUIJOTE (Q-U-I JOint Tenerife) CMB <span class="hlt">Experiment</span> is observing the polarization of the Cosmic Microwave Background and other Galactic and extragalactic signals at medium and large angular scales in the frequency range of 10-40 GHz. This <span class="hlt">experiment</span> will provide valuable information about the polarization properties of synchrotron and anomalous microwave emission at these frequencies. The maps obtained with the multi-frequency instrument (10-20 GHz), in combination with data from other <span class="hlt">experiments</span> like Planck and the VLA, will be used to clean the diffuse and compact foreground emission at 30 and 40 GHz, the cosmological channels. After three years of effective observations we expect to reach the required sensitivity to detect a primordial gravitational-wave component if the tensor-to-scalar ratio is larger than r = 0.05. At the moment we have completed the Wide Survey with the multi-frequency instrument, covering 20.000 square degrees of the Northern hemisphere. In addition, we have deep integrations of our main calibrators Taurus A, Cassiopea A, Jupiter and of the Perseus molecular complex region, where we have measured the spectrum of the anomalous microwave emission. We also have observed several regions of interest for our science program where we plan to study the compact and diffuse polarized emission.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19930022760&hterms=degradation+nitrate&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3Ddegradation%2Bnitrate','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19930022760&hterms=degradation+nitrate&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3Ddegradation%2Bnitrate"><span id="translatedtitle">Mars brine formation <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Moore, Jeffrey M.; Bullock, Mark A.; Stoker, Carol R.</p> <p>1992-01-01</p> <p>Evaporites, particularly carbonates, nitrates, and sulfates, may be major sinks of volatiles scavenged from the martian atmosphere. Mars is thought to have once had a denser, warmer atmosphere that permitted the presence of liquid surface water. The conversion of atmospheric CO2 into carbonate is hypothesized to have degraded the martian climate to its present state of a generally subfreezing, desiccated desert. The rate for such a conversion under martian conditions is poorly known, so the time scale of climate degradation by this process cannot be easily evaluated. If some models are correct, carbonate formation may have been fast at geological time scales. The <span class="hlt">experiments</span> of Booth and Kieffer also imply fast (10(exp 6) - 10(exp 7) yr) removal of the missing CO2 inventory, estimated to be 1 - 5 bar, by means of carbonate formation. The timing of formation of many of the fluvial features observed on Mars is, in large part, dependent on when and how fast the atmosphere changed. A knowledge of the rate at which carbonates and nitrates formed is also essential for assessing the probability that life, or its chemical precursors, could have developed on Mars. No previous <span class="hlt">experiments</span> have quantitatively evaluated the rate of solution for a suite of mobile anions and cations from unaltered minerals and atmospheric gases into liquid water under Mars-like conditions. Such <span class="hlt">experiments</span> are the focus of this task.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012JPhCS.375d2064P','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012JPhCS.375d2064P"><span id="translatedtitle">The Double Chooz <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Pfahler, Patrick; Double Chooz Collaboration</p> <p>2012-07-01</p> <p>Double Chooz is a reactor bar nue-disappearance <span class="hlt">experiment</span> situated at the commercial nuclear power plant of Chooz in northern France. The <span class="hlt">experiment</span> aims for the revelation of the last unknown mixing angle Θ13 as a part of the neutrino mixing matrix or the improvement of the upper limit for sin2(2Θ13), which is currently < 0.14 (90% CL). A newly developed gadolinium-loaded liquid scintillator as target allows the detection of electron-anti-neutrinos (bar nue) using the inverse beta decay and its distinct decay pattern (bar nue + p → e+ +n). Double Chooz uses two identical detectors at different distances in order to reduce systematic uncertainties. This will allow, after a data taking phase of 4 years, an improvement on sin2(2Θ13) down to < 0.03 (90% CL). The first (far) detector has successfully been installed and filled, and takes data since April of 2011. A preliminary analysis of first 120 days revealed about 4000 Neutrino-candidates and a stable detector-setup with low backgrounds. The commissioning of the second (near) detector is expected for the beginning of 2013 and will provide maximum sensitivity for the <span class="hlt">experiment</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=S72-37255&hterms=atomic+composition&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D80%26Ntt%3Datomic%2Bcomposition','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=S72-37255&hterms=atomic+composition&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D80%26Ntt%3Datomic%2Bcomposition"><span id="translatedtitle">Apollo 17 Lunar Surface <span class="hlt">Experiment</span>: Lunar Atmosphere Composition <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>1972-01-01</p> <p>Table-top views of one of the Apollo 17 Lunar Surface <span class="hlt">Experiments</span>. This view is of the Lunar Atmosphere Composition <span class="hlt">Experiment</span> (LACE) (Lunar Mass Spectrometer), <span class="hlt">Experiment</span> S-205, one of the <span class="hlt">experiments</span> of the Apollo Lunar Surface <span class="hlt">Experiments</span> Package which will be carried on the Apollo 17 lunar landing mission. The LACE will measrue components in the ambient lunar atmosphere in the range of one to 110 atomic mass units (AMU).</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014JSV...333.5042S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014JSV...333.5042S"><span id="translatedtitle">Nonlinear analysis of cylindrical and conical <span class="hlt">hysteretic</span> whirl motions in rotor-dynamics</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Sorge, Francesco</p> <p>2014-09-01</p> <p>The internal friction of a rotor-shaft-support system is mainly due to the shaft structural hysteresis and to some possible shrink-fit release of the assembly. The experimentation points out the destabilizing effect of the internal friction in the over-critical rotor running. Nevertheless, this detrimental influence may be efficiently counterbalanced by other external dissipative sources located in the supports or by a proper anisotropic configuration of the support stiffness. The present analysis considers a rotor-shaft system which is symmetric with respect to the mid-span and is constrained by viscous-flexible supports with different stiffness on two orthogonal planes. The cylindrical and conical whirling modes are easily uncoupled and separately analysed. The internal dissipation is modelled by nonlinear Coulombian forces and moments, which counteract the translational and rotational motion of the rotor relative to a frame rotating with the shaft ends. The nonlinear equations of motion are solved by averaging approaches of the Krylov-Bogoliubov type. In both the over-critical whirling motions, cylindrical and conical, stable limit cycles may be attained whose amplitude is as large as the external dissipation applied by the supports is low. The stiffness anisotropy of the supports may be recognised as quite beneficial for the cylindrical whirl.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1265594','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1265594"><span id="translatedtitle">Finite-size effects of <span class="hlt">hysteretic</span> dynamics in multilayer graphene on a ferroelectric</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Morozovska, Anna N.; Pusenkova, Anastasiia S.; Varenyk, Oleksandr V.; Kalinin, Sergei V.; Eliseev, Eugene A.; Strikha, Maxym V.</p> <p>2015-06-11</p> <p>The origin and influence of finite-size effects on the nonlinear dynamics of space charge stored by multilayer graphene on a ferroelectric and resistivity of graphene channel were analyzed. In this paper, we develop a self-consistent approach combining the solution of electrostatic problems with the nonlinear Landau-Khalatnikov equations for a ferroelectric. The size-dependent behaviors are governed by the relations between the thicknesses of multilayer graphene, ferroelectric film, and the dielectric layer. The appearance of charge and electroresistance hysteresis loops and their versatility stem from the interplay of polarization reversal dynamics and its incomplete screening in an alternating electric field. These features are mostly determined by the dielectric layer thickness. The derived analytical expressions for electric fields and space-charge-density distribution in a multilayer system enable knowledge-driven design of graphene-on-ferroelectric heterostructures with advanced performance. We further investigate the effects of spatially nonuniform ferroelectric domain structures on the graphene layers’ conductivity and predict its dramatic increase under the transition from multi- to single-domain state in a ferroelectric. Finally, this intriguing effect can open possibilities for the graphene-based sensors and explore the underlying physical mechanisms in the operation of graphene field-effect transistor with ferroelectric gating.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/7182078','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/7182078"><span id="translatedtitle">Single parameter analysis of <span class="hlt">hysteretic</span> magnetic flux trapping in high T[sub c] superconductor ribbon</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Telschow, K.L.</p> <p>1992-01-01</p> <p>This paper described the application of an AC surface probe, similar to presently used eddy current probes, to the measurement of DC transport critical currents and critical state dissipation in high [Tc] superconductors. It has been shown that the probe can provide quantitative measurement of the full field penetration in superconducting samples by measuring the response of AC induced screening currents for superconducting materials in the form of tapes with overlayers of silver. In this manner, the AC probe can be used to replace the contact DC probe for determining critical currents in a noncontacting and local manner suitable for scanning over or along the sample.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/10189871','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/10189871"><span id="translatedtitle">Single parameter analysis of <span class="hlt">hysteretic</span> magnetic flux trapping in high T{sub c} superconductor ribbon</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Telschow, K.L.</p> <p>1992-10-01</p> <p>This paper described the application of an AC surface probe, similar to presently used eddy current probes, to the measurement of DC transport critical currents and critical state dissipation in high {Tc} superconductors. It has been shown that the probe can provide quantitative measurement of the full field penetration in superconducting samples by measuring the response of AC induced screening currents for superconducting materials in the form of tapes with overlayers of silver. In this manner, the AC probe can be used to replace the contact DC probe for determining critical currents in a noncontacting and local manner suitable for scanning over or along the sample.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1133818','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1133818"><span id="translatedtitle">Real space mapping of oxygen vacancy diffusion and electrochemical transformations by <span class="hlt">hysteretic</span> current reversal curve measurements</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Kalinin, Sergei V.; Balke, Nina; Borisevich, Albina Y.; Jesse, Stephen; Maksymovych, Petro; Kim, Yunseok; Strelcov, Evgheni</p> <p>2014-06-10</p> <p>An excitation voltage biases an ionic conducting material sample over a nanoscale grid. The bias sweeps a modulated voltage with increasing maximal amplitudes. A current response is measured at grid locations. Current response reversal curves are mapped over maximal amplitudes of the bias cycles. Reversal curves are averaged over the grid for each bias cycle and mapped over maximal bias amplitudes for each bias cycle. Average reversal curve areas are mapped over maximal amplitudes of the bias cycles. Thresholds are determined for onset and ending of electrochemical activity. A predetermined number of bias sweeps may vary in frequency where each sweep has a constant number of cycles and reversal response curves may indicate ionic diffusion kinetics.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/21182668','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/21182668"><span id="translatedtitle">Oxygen induced <span class="hlt">hysteretic</span> current-voltage characteristics of iron-phthalocyanine thin films</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Samanta, Soumen; Singh, Ajay; Debnath, A. K.; Aswal, D. K.; Gupta, S. K.; Yakhmi, J. V.; Singh, S.; Basu, S.; Deshpande, S. K.</p> <p>2008-10-01</p> <p>Electrical transport has been investigated in amorphous and polycrystalline ({alpha}-phase) iron phthalocyanine (FePc) thin films grown by molecular beam epitaxy. Measurements carried out in the temperature range of 150-300 K showed hysteric current-voltage (I-V) characteristics at temperatures above 200 K. The I-V characteristics measured during the increasing voltage scan showed a transition from the Ohmic conduction to the trap controlled space charge limited conduction followed by a trap free conduction. During the decreasing voltage scan, trap free conduction was observed in full voltage range. The I-V hysteresis is attributed to the filling of deep surface traps created by chemisorbed oxygen. Amorphous films showed higher hysteresis as well as chemisorbed oxygen content.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011PhRvB..84e4539V&link_type=ABSTRACT','NASAADS'); return false;" href="http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011PhRvB..84e4539V&link_type=ABSTRACT"><span id="translatedtitle"><span class="hlt">Hysteretic</span> magnetic pinning and reversible resistance switching in high-temperature superconductor/ferromagnet multilayers</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Visani, C.; Metaxas, P. J.; Collaudin, A.; Calvet, B.; Bernard, R.; Briatico, J.; Deranlot, C.; Bouzehouane, K.; Villegas, J. E.</p> <p>2011-08-01</p> <p>We study a high-critical temperature superconducting (YBa2Cu3O7-δ)/ferromagnetic (Co/Pt multilayer) hybrid that exhibits resistance switching driven by the magnetic history: depending on the direction of the external field, a pronounced decrease or increase of the mixed-state resistance is observed as magnetization reversal occurs within the Co/Pt multilayer. We demonstrate that stray magnetic fields cause these effects via (i) creation of vortices/antivortices and (ii) magnetostatic pinning of vortices that are induced by the external field.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016PhyB..486..116B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016PhyB..486..116B"><span id="translatedtitle">An experimental evaluation of the fully coupled <span class="hlt">hysteretic</span> electro-mechanical behaviour of piezoelectric actuators</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Butcher, Mark; Davino, Daniele; Giustiniani, Alessandro; Masi, Alessandro</p> <p>2016-04-01</p> <p>Piezoelectrics are the most commonly used of the multifunctional smart materials in industrial applications, because of their relatively low cost and ease of use in electric and electronic oriented applications. Nevertheless, while datasheets usually give just small signal quasi-static parameters, their full potential can only be exploited only if a full characterization is available because the maximum stroke or the higher piezo coupling coefficients are available at different electro-mechanical biases, where often small signal analysis is not valid. In this paper a method to get the quasi-static fully coupled characterization is presented. The method is tested on a commercial piezo actuator but can be extended to similar devices.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015JOM....67i2123B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015JOM....67i2123B"><span id="translatedtitle">A Preisach-Based Nonequilibrium Methodology for Simulating Performance of <span class="hlt">Hysteretic</span> Magnetic Refrigeration Cycles</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Brown, Timothy D.; Bruno, Nickolaus M.; Chen, Jing-Han; Karaman, Ibrahim; Ross, Joseph H.; Shamberger, Patrick J.</p> <p>2015-09-01</p> <p>In giant magnetocaloric effect (GMCE) materials a large entropy change couples to a magnetostructural first-order phase transition, potentially providing a basis for magnetic refrigeration cycles. However, hysteresis loss greatly reduces the availability of refrigeration work in such cycles. Here, we present a methodology combining a Preisach model for rate-independent hysteresis with a thermodynamic analysis of nonequilibrium phase transformations which, for GMCE materials exhibiting hysteresis, allows an evaluation of refrigeration work and efficiency terms for an arbitrary cycle. Using simplified but physically meaningful descriptors for the magnetic and thermal properties of a Ni45Co5Mn36.6In13.4 at.% single-crystal alloy, we relate these work/efficiency terms to fundamental material properties, demonstrating the method's use as a materials design tool. Following a simple two-parameter model for the alloy's hysteresis properties, we compute and interpret the effect of each parameter on the cyclic refrigeration work and efficiency terms. We show that hysteresis loss is a critical concern in cycles based on GMCE systems, since the resultant lost work can reduce the refrigeration work to zero; however, we also find that the lost work may be mitigated by modifying other aspects of the transition, such as the width over which the one-way transformation occurs.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li class="active"><span>22</span></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_22 --> <div id="page_23" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li class="active"><span>23</span></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>25</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="441"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://cfpub.epa.gov/si/si_public_record_report.cfm?dirEntryId=31440&keyword=Hysteresis&actType=&TIMSType=+&TIMSSubTypeID=&DEID=&epaNumber=&ntisID=&archiveStatus=Both&ombCat=Any&dateBeginCreated=&dateEndCreated=&dateBeginPublishedPresented=&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&dateBeginCompleted=&dateEndCompleted=&personID=&role=Any&journalID=&publisherID=&sortBy=revisionDate&count=50&CFID=77087339&CFTOKEN=36496226','EPA-EIMS'); return false;" href="http://cfpub.epa.gov/si/si_public_record_report.cfm?dirEntryId=31440&keyword=Hysteresis&actType=&TIMSType=+&TIMSSubTypeID=&DEID=&epaNumber=&ntisID=&archiveStatus=Both&ombCat=Any&dateBeginCreated=&dateEndCreated=&dateBeginPublishedPresented=&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&dateBeginCompleted=&dateEndCompleted=&personID=&role=Any&journalID=&publisherID=&sortBy=revisionDate&count=50&CFID=77087339&CFTOKEN=36496226"><span id="translatedtitle">MODEL FOR <span class="hlt">HYSTERETIC</span> CONSTITUTIVE RELATIONS GOVERNING MULTIPHASE FLOW. 2. PERMEABILITY-SATURATION RELATIONS</span></a></p> <p><a target="_blank" href="http://oaspub.epa.gov/eims/query.page">EPA Science Inventory</a></p> <p></p> <p></p> <p>A theoretical model is described for the prediction of relative permeability-saturation (k-S) relations in two-phase (air-water) and three phase (air-oil-water) porous media systems subject to arbitrary saturation paths. Integral expressions for air, water, and oil relative perme...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012NatMa..11..710Y','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012NatMa..11..710Y"><span id="translatedtitle">A partially interpenetrated metal-organic framework for selective <span class="hlt">hysteretic</span> sorption of carbon dioxide</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Yang, Sihai; Lin, Xiang; Lewis, William; Suyetin, Mikhail; Bichoutskaia, Elena; Parker, Julia E.; Tang, Chiu C.; Allan, David R.; Rizkallah, Pierre J.; Hubberstey, Peter; Champness, Neil R.; Mark Thomas, K.; Blake, Alexander J.; Schröder, Martin</p> <p>2012-08-01</p> <p>The selective capture of carbon dioxide in porous materials has potential for the storage and purification of fuel and flue gases. However, adsorption capacities under dynamic conditions are often insufficient for practical applications, and strategies to enhance CO2-host selectivity are required. The unique partially interpenetrated metal-organic framework NOTT-202 represents a new class of dynamic material that undergoes pronounced framework phase transition on desolvation. We report temperature-dependent adsorption/desorption hysteresis in desolvated NOTT-202a that responds selectively to CO2. The CO2 isotherm shows three steps in the adsorption profile at 195 K, and stepwise filling of pores generated within the observed partially interpenetrated structure has been modelled by grand canonical Monte Carlo simulations. Adsorption of N2, CH4, O2, Ar and H2 exhibits reversible isotherms without hysteresis under the same conditions, and this allows capture of gases at high pressure, but selectively leaves CO2 trapped in the nanopores at low pressure.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/22660661','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/22660661"><span id="translatedtitle">A partially interpenetrated metal-organic framework for selective <span class="hlt">hysteretic</span> sorption of carbon dioxide.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Yang, Sihai; Lin, Xiang; Lewis, William; Suyetin, Mikhail; Bichoutskaia, Elena; Parker, Julia E; Tang, Chiu C; Allan, David R; Rizkallah, Pierre J; Hubberstey, Peter; Champness, Neil R; Thomas, K Mark; Blake, Alexander J; Schröder, Martin</p> <p>2012-08-01</p> <p>The selective capture of carbon dioxide in porous materials has potential for the storage and purification of fuel and flue gases. However, adsorption capacities under dynamic conditions are often insufficient for practical applications, and strategies to enhance CO(2)-host selectivity are required. The unique partially interpenetrated metal-organic framework NOTT-202 represents a new class of dynamic material that undergoes pronounced framework phase transition on desolvation. We report temperature-dependent adsorption/desorption hysteresis in desolvated NOTT-202a that responds selectively to CO(2). The CO(2) isotherm shows three steps in the adsorption profile at 195 K, and stepwise filling of pores generated within the observed partially interpenetrated structure has been modelled by grand canonical Monte Carlo simulations. Adsorption of N(2), CH(4), O(2), Ar and H(2) exhibits reversible isotherms without hysteresis under the same conditions, and this allows capture of gases at high pressure, but selectively leaves CO(2) trapped in the nanopores at low pressure. PMID:22660661</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://cfpub.epa.gov/si/si_public_record_report.cfm?dirEntryId=42721&keyword=parametric+AND+scaling&actType=&TIMSType=+&TIMSSubTypeID=&DEID=&epaNumber=&ntisID=&archiveStatus=Both&ombCat=Any&dateBeginCreated=&dateEndCreated=&dateBeginPublishedPresented=&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&dateBeginCompleted=&dateEndCompleted=&personID=&role=Any&journalID=&publisherID=&sortBy=revisionDate&count=50&CFID=76756858&CFTOKEN=73159279','EPA-EIMS'); return false;" href="http://cfpub.epa.gov/si/si_public_record_report.cfm?dirEntryId=42721&keyword=parametric+AND+scaling&actType=&TIMSType=+&TIMSSubTypeID=&DEID=&epaNumber=&ntisID=&archiveStatus=Both&ombCat=Any&dateBeginCreated=&dateEndCreated=&dateBeginPublishedPresented=&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&dateBeginCompleted=&dateEndCompleted=&personID=&role=Any&journalID=&publisherID=&sortBy=revisionDate&count=50&CFID=76756858&CFTOKEN=73159279"><span id="translatedtitle">MODEL FOR <span class="hlt">HYSTERETIC</span> CONSTITUTIVE RELATIONS GOVERNING MULTIPHASE FLOW. 1. SATURATION-PRESSURE RELATIONS</span></a></p> <p><a target="_blank" href="http://oaspub.epa.gov/eims/query.page">EPA Science Inventory</a></p> <p></p> <p></p> <p>In these companion papers, a general theoretical model is presented for the description of functional relationships between relative permeability k, fluid saturation S, and pressure P in two- or three-phase (e.g., air-water or air-oil-water) porous media systems subject to arbitr...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1225404','PMC'); return false;" href="http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1225404"><span id="translatedtitle">Highly cooperative and <span class="hlt">hysteretic</span> response of the skeletal muscle ryanodine receptor to changes in proton concentrations.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Ma, J; Zhao, J</p> <p>1994-01-01</p> <p>Ryanodine receptors are key molecules in excitation-contraction coupling of skeletal muscle. They form the pore of the calcium release channel, which is regulated by Ca and ATP. Multiple proton titration sites are involved in controlling the different open states of the channel, as indicated by the following: i) the channel had a biphasic response to changes in proton concentrations around neutral pH; ii) the activities of the channel were inhibited by acidic pHs in a highly cooperative manner; and iii) the channel exhibited pronounced hysteresis to changes in pH. Four distinct conductance states can be identified in the single ryanodine-activated calcium release channel. The distribution of the multiple conductance states depends on the level of [Ca], ATP, and pH in the recording solution. The data are consistent with the multimeric structure of the skeletal muscle ryanodine receptor. Images FIGURE 3 PMID:7948677</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/22293105','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/22293105"><span id="translatedtitle">Non-<span class="hlt">hysteretic</span> superconducting quantum interference proximity transistor with enhanced responsivity</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Jabdaraghi, R. N.; Meschke, M.; Pekola, J. P.</p> <p>2014-02-24</p> <p>This Letter presents fabrication and characterization of an optimized superconducting quantum interference proximity transistor. The present device, characterized by reduced tunnel junction area and shortened normal-metal section, demonstrates no hysteresis at low temperatures as we increased the Josephson inductance of the weak link by decreasing its cross section. It has consequently almost an order of magnitude improved magnetic field responsivity as compared to the earlier design. The modulation of both the current and the voltage across the junction have been measured as a function of magnetic flux piercing the superconducting loop.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/pages/biblio/1265594-finite-size-effects-hysteretic-dynamics-multilayer-graphene-ferroelectric','SCIGOV-DOEP'); return false;" href="http://www.osti.gov/pages/biblio/1265594-finite-size-effects-hysteretic-dynamics-multilayer-graphene-ferroelectric"><span id="translatedtitle">Finite-size effects of <span class="hlt">hysteretic</span> dynamics in multilayer graphene on a ferroelectric</span></a></p> <p><a target="_blank" href="http://www.osti.gov/pages">DOE PAGESBeta</a></p> <p>Morozovska, Anna N.; Pusenkova, Anastasiia S.; Varenyk, Oleksandr V.; Kalinin, Sergei V.; Eliseev, Eugene A.; Strikha, Maxym V.</p> <p>2015-06-11</p> <p>The origin and influence of finite-size effects on the nonlinear dynamics of space charge stored by multilayer graphene on a ferroelectric and resistivity of graphene channel were analyzed. In this paper, we develop a self-consistent approach combining the solution of electrostatic problems with the nonlinear Landau-Khalatnikov equations for a ferroelectric. The size-dependent behaviors are governed by the relations between the thicknesses of multilayer graphene, ferroelectric film, and the dielectric layer. The appearance of charge and electroresistance hysteresis loops and their versatility stem from the interplay of polarization reversal dynamics and its incomplete screening in an alternating electric field. These featuresmore » are mostly determined by the dielectric layer thickness. The derived analytical expressions for electric fields and space-charge-density distribution in a multilayer system enable knowledge-driven design of graphene-on-ferroelectric heterostructures with advanced performance. We further investigate the effects of spatially nonuniform ferroelectric domain structures on the graphene layers’ conductivity and predict its dramatic increase under the transition from multi- to single-domain state in a ferroelectric. Finally, this intriguing effect can open possibilities for the graphene-based sensors and explore the underlying physical mechanisms in the operation of graphene field-effect transistor with ferroelectric gating.« less</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://cfpub.epa.gov/si/si_public_record_report.cfm?dirEntryId=272737&keyword=peat&actType=&TIMSType=+&TIMSSubTypeID=&DEID=&epaNumber=&ntisID=&archiveStatus=Both&ombCat=Any&dateBeginCreated=&dateEndCreated=&dateBeginPublishedPresented=&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&dateBeginCompleted=&dateEndCompleted=&personID=&role=Any&journalID=&publisherID=&sortBy=revisionDate&count=50&CFID=77941261&CFTOKEN=82474729','EPA-EIMS'); return false;" href="http://cfpub.epa.gov/si/si_public_record_report.cfm?dirEntryId=272737&keyword=peat&actType=&TIMSType=+&TIMSSubTypeID=&DEID=&epaNumber=&ntisID=&archiveStatus=Both&ombCat=Any&dateBeginCreated=&dateEndCreated=&dateBeginPublishedPresented=&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&dateBeginCompleted=&dateEndCompleted=&personID=&role=Any&journalID=&publisherID=&sortBy=revisionDate&count=50&CFID=77941261&CFTOKEN=82474729"><span id="translatedtitle">Hydrology in a peaty high marsh: <span class="hlt">hysteretic</span> flow and biogeochemical implications</span></a></p> <p><a target="_blank" href="http://oaspub.epa.gov/eims/query.page">EPA Science Inventory</a></p> <p></p> <p></p> <p>Terrestrial nutrient input to coastal waters is a critical water quality problem worldwide, and salt marshes may provide a valuable nutrient buffer (either by removal or by smoothing out pulse inputs) between terrestrial sources and sensitive estuarine habitats. One of the major...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2001JAP....89.5610S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2001JAP....89.5610S"><span id="translatedtitle">Modeling the effect of grain size and dislocation density on <span class="hlt">hysteretic</span> magnetic properties in steels</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Sablik, M. J.</p> <p>2001-05-01</p> <p>In this article, the Jiles-Atherton model is modified to elucidate the variation of magnetic properties with grain size and dislocation density. The modified model predicts generally that coercive field increases with increasing dislocation density and inverse grain size and that remanent flux density and permeability at the coercive field decrease with increasing dislocation density and inverse grain size. Using the same model, it should be possible to model the effects of grain size and dislocation density on other magnetic measurements such as nonlinear harmonics of the flux density or Barkhausen noise.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/6909046','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/6909046"><span id="translatedtitle">A torsion balance to measure <span class="hlt">hysteretic</span> levitation forces in high T sub c superconductors</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Weeks, D.E. )</p> <p>1990-01-01</p> <p>A simple torsion balance is described which is used to measure the levitation force on a magnet as a function of height above bulk samples of the new high {ital T}{sub {ital c}} superconductors. Results are presented for a the YBa{sub 2}Cu{sub 3}O{sub {ital x}} ({ital T}{sub {ital c}}{similar to}90 K) and the Tl-Ba-Ca-Cu-O ({ital T}{sub {ital c}}{similar to}120 K) superconducting systems. Possible uses for the balance are discussed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2010SPIE.7644E..1JS','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2010SPIE.7644E..1JS"><span id="translatedtitle">Inverse model construction for control implementation of macro fiber composite actuators operating in <span class="hlt">hysteretic</span> regimes</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Stuebner, Michael; Smith, Ralph C.</p> <p>2010-04-01</p> <p>Macro Fiber Composite (MFC) actuators utilize PZT fibers embedded in an epoxy matrix for structural actuation. Due to their construction, they are lightweight and provide broadband inputs. Significant advantages of MFC actuators are their high performance, durability, and flexibility when compared to traditional piezoceramic actuators. They are presently being considered for a range of applications including positioning of membrane mirrors and structural control in the aerospace and automotive industry. However, they exhibit varying degrees of hysteresis and constitutive nonlinearities throughout their operating range that must be incorporated in models to achieve the full capabilities of the materials. In this paper, hysteresis is modeled using the homogenized energy model. The inverse model is then used to construct an inverse compensator framework suitable for subsequent control design. The performance of the inverse compensator is illustrated through a numerical example.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1994JAP....75.5673S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1994JAP....75.5673S"><span id="translatedtitle">Micromagnetic model for the influence of biaxial stress on <span class="hlt">hysteretic</span> magnetic properties</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Sablik, M. J.; Riley, L. A.; Burkhardt, G. L.; Kwun, H.; Cannell, P. Y.; Watts, K. T.; Langman, R. A.</p> <p>1994-05-01</p> <p>A micromagnetic formulation has been developed for modeling the effect of biaxial stress on magnetoelastic processes in polycrystalline steels. In particular, the formulation employs the Schneider-Cannell-Watts model and involves substitution of an effective stress equal to one of the deviatoric (i.e., distortional) normal stress components, depending on whether the field is parallel to a tensile or compressive axis or to the third axis perpendicular to the plane of biaxial stress. Computer results are compared to experimental results on the effects of biaxial stress on magnetic properties in mild steel and in SAE-4130 steel. Good qualitative agreement is found in almost all cases, in that in going from one biaxial stress case to the next, the same kinds of changes are seen magnetically. It is also shown from the model and the data that a method can be formulated to nondestructively determine the difference in biaxial stresses.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/7207538','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/7207538"><span id="translatedtitle">Micromagnetic model for the influence of biaxial stress on <span class="hlt">hysteretic</span> magnetic properties</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Sablik, M.J.; Riley, L.A.; Burkhardt, G.L.; Kwun, H. ); Cannell, P.Y.; Watts, K.T. ); Langman, R.A. )</p> <p>1994-05-15</p> <p>A micromagnetic formulation has been developed for modeling the effect of biaxial stress on magnetoelastic processes in polycrystalline steels. In particular, the formulation employs the Schneider--Cannell--Watts model and involves substitution of an effective stress equal to one of the deviatoric (i.e., distortional) normal stress components, depending on whether the field is parallel to a tensile or compressive axis or to the third axis perpendicular to the plane of biaxial stress. Computer results are compared to experimental results on the effects of biaxial stress on magnetic properties in mild steel and in SAE-4130 steel. Good qualitative agreement is found in almost all cases, in that in going from one biaxial stress case to the next, the same kinds of changes are seen magnetically. It is also shown from the model and the data that a method can be formulated to nondestructively determine the difference in biaxial stresses.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/22304417','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/22304417"><span id="translatedtitle">Role of open boundary conditions on the <span class="hlt">hysteretic</span> behaviour of one-dimensional spin crossover nanoparticles</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Chiruta, Daniel; Linares, Jorge E-mail: miya@spin.phys.s.u-tokyo.ac.jp; Boukheddaden, Kamel; Miyashita, Seiji E-mail: miya@spin.phys.s.u-tokyo.ac.jp</p> <p>2014-05-21</p> <p>In order to explain clearly the role of the open boundary conditions (OBCs) on phase transition in one dimensional system, we consider an Ising model with both short-range (J) and long-range (G) interactions, which has allowed us to study the cooperative nature of spin-crossover (SCO) materials at the nanometer scale. At this end, we developed a transfer-matrix method for one-dimensional (1D) SCO system with free boundary conditions, and we give numerical evidences for how the thermal spin transition curves vary as a function of the physical parameters (J, G) or an applied pressure. Moreover for OBCs case, we have derived the bulk, surface and finite-size contributions to the free energy and we have investigated the variation of these energies as function of J and system size. We have found that the surface free energy behaves like J〈σ〉{sup 2}, where 〈σ〉 is the average magnetization per site. Since the properties of the nanometric scale are dramatically influenced by the system's size (N), our analytical outcomes for the size dependence represent a step to achieve new characteristic of the future devices and also a way to find various novel properties which are absent in the bulk materials.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70044006','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70044006"><span id="translatedtitle">Converting HAZUS capacity curves to seismic hazard-compatible building fragility functions: effect of <span class="hlt">hysteretic</span> models</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Ryu, Hyeuk; Luco, Nicolas; Baker, Jack W.; Karaca, Erdem</p> <p>2008-01-01</p> <p>A methodology was recently proposed for the development of hazard-compatible building fragility models using parameters of capacity curves and damage state thresholds from HAZUS (Karaca and Luco, 2008). In the methodology, HAZUS curvilinear capacity curves were used to define nonlinear dynamic SDOF models that were subjected to the nonlinear time history analysis instead of the capacity spectrum method. In this study, we construct a multilinear capacity curve with negative stiffness after an ultimate (capping) point for the nonlinear time history analysis, as an alternative to the curvilinear model provided in HAZUS. As an illustration, here we propose parameter values of the multilinear capacity curve for a moderate-code low-rise steel moment resisting frame building (labeled S1L in HAZUS). To determine the final parameter values, we perform nonlinear time history analyses of SDOF systems with various parameter values and investigate their effects on resulting fragility functions through sensitivity analysis. The findings improve capacity curves and thereby fragility and/or vulnerability models for generic types of structures.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19890001704','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19890001704"><span id="translatedtitle">PiFEx propagation <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Emerson, Richard F.; Berner, Jeff B.; Ho, Loretta L. G.</p> <p>1988-01-01</p> <p>An overview is presented of the Pilot Field <span class="hlt">Experiments</span> (PiFEx) performed under the Mobile Satellite <span class="hlt">Experiment</span> Program (MSAT-X) on the performance of MSAT-X equipment and subsystems. A brief history of PiFEx and plans for future <span class="hlt">experiments</span> are given. Some results from the satellite <span class="hlt">experiment</span> held last August are discussed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/10105758','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/10105758"><span id="translatedtitle">AGS <span class="hlt">Experiments</span>: 1989, 1990, 1991</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Depken, J.C.</p> <p>1992-02-01</p> <p>This report contains: Experimental areas layout; table of beam parameters and fluxes; <span class="hlt">experiment</span> schedule ``as run``; proposed 1992 schedule; a listing of <span class="hlt">experiments</span> by number; two-page summaries of each <span class="hlt">experiment</span> begin here, also ordered by number; publications of AGS <span class="hlt">Experiments</span> begin here; and list of AGS Experimenters begins here.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/6955779','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/6955779"><span id="translatedtitle">AGS <span class="hlt">Experiments</span>: 1989, 1990, 1991</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Depken, J.C.</p> <p>1992-02-01</p> <p>This report contains: Experimental areas layout; table of beam parameters and fluxes; <span class="hlt">experiment</span> schedule as run''; proposed 1992 schedule; a listing of <span class="hlt">experiments</span> by number; two-page summaries of each <span class="hlt">experiment</span> begin here, also ordered by number; publications of AGS <span class="hlt">Experiments</span> begin here; and list of AGS Experimenters begins here.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19910005387','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19910005387"><span id="translatedtitle">Initial blood storage <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Surgenor, Douglas MACN.</p> <p>1988-01-01</p> <p>The design of the Initial Blood Storage <span class="hlt">Experiment</span> (IBSE) was based upon a carefully controlled comparison between identical sets of human blood cell suspensions - red cells, white cell, and platelets - one set of which was transported aboard the Columbia on a 6 day 11 hour mission, and the other held on the ground. Both sets were carried inside stainless steel dewars within specially fabricated flight hardware. Individual bags of cell suspensions were randomly assigned with respect to ground vs orbit status, dewar chamber, and specific location within the dewar. To foster optimal preservation, each cell type was held under specific optimal conditions of pH, ionic strength, solute concentration, gas tension, and temperature. An added variable in this initial <span class="hlt">experiment</span> was provided by the use of three different polymer/plasticizer formulations for the sealed bags which held the blood cells. At termination of the <span class="hlt">experiment</span>, aliquots of the suspensions, identified only by code, were distributed to be assayed. Assays were selected to constitute a broad survey of cellular properties and thereby maximize the chances of detection of gravitational effects. A total of 74 different outcome measurements were reported for statistical analysis. When the measurements were completed, the results were entered into the IBSE data base, at which time the data were matched with the original blood bag numbers to determine their status with respect to polymer/plasticizer type, orbit status (orbit or ground), and storage position within the experimental hardware. The data were studied by analysis of variance. Initially, type of bag and orbital status were main factors; later more detailed analyses were made on specific issues such as position in the hardware and specific plastic. If the analysis of variance indicated a statistical significance at the 5 percent level the corresponding p-value was reported.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3840899','PMC'); return false;" href="http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3840899"><span id="translatedtitle">Situating emotional <span class="hlt">experience</span></span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Wilson-Mendenhall, Christine D.; Barrett, Lisa Feldman; Barsalou, Lawrence W.</p> <p>2013-01-01</p> <p>Psychological construction approaches to emotion suggest that emotional <span class="hlt">experience</span> is situated and dynamic. Fear, for example, is typically studied in a physical danger context (e.g., threatening snake), but in the real world, it often occurs in social contexts, especially those involving social evaluation (e.g., public speaking). Understanding situated emotional <span class="hlt">experience</span> is critical because adaptive responding is guided by situational context (e.g., inferring the intention of another in a social evaluation situation vs. monitoring the environment in a physical danger situation). In an fMRI study, we assessed situated emotional <span class="hlt">experience</span> using a newly developed paradigm in which participants vividly imagine different scenarios from a first-person perspective, in this case scenarios involving either social evaluation or physical danger. We hypothesized that distributed neural patterns would underlie immersion in social evaluation and physical danger situations, with shared activity patterns across both situations in multiple sensory modalities and in circuitry involved in integrating salient sensory information, and with unique activity patterns for each situation type in coordinated large-scale networks that reflect situated responding. More specifically, we predicted that networks underlying the social inference and mentalizing involved in responding to a social threat (in regions that make up the “default mode” network) would be reliably more active during social evaluation situations. In contrast, networks underlying the visuospatial attention and action planning involved in responding to a physical threat would be reliably more active during physical danger situations. The results supported these hypotheses. In line with emerging psychological construction approaches, the findings suggest that coordinated brain networks offer a systematic way to interpret the distributed patterns that underlie the diverse situational contexts characterizing emotional</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li class="active"><span>23</span></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>25</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_23 --> <div id="page_24" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li class="active"><span>24</span></li> <li><a href="#" onclick='return showDiv("page_25");'>25</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="461"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/24324420','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/24324420"><span id="translatedtitle">Situating emotional <span class="hlt">experience</span>.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Wilson-Mendenhall, Christine D; Barrett, Lisa Feldman; Barsalou, Lawrence W</p> <p>2013-01-01</p> <p>Psychological construction approaches to emotion suggest that emotional <span class="hlt">experience</span> is situated and dynamic. Fear, for example, is typically studied in a physical danger context (e.g., threatening snake), but in the real world, it often occurs in social contexts, especially those involving social evaluation (e.g., public speaking). Understanding situated emotional <span class="hlt">experience</span> is critical because adaptive responding is guided by situational context (e.g., inferring the intention of another in a social evaluation situation vs. monitoring the environment in a physical danger situation). In an fMRI study, we assessed situated emotional <span class="hlt">experience</span> using a newly developed paradigm in which participants vividly imagine different scenarios from a first-person perspective, in this case scenarios involving either social evaluation or physical danger. We hypothesized that distributed neural patterns would underlie immersion in social evaluation and physical danger situations, with shared activity patterns across both situations in multiple sensory modalities and in circuitry involved in integrating salient sensory information, and with unique activity patterns for each situation type in coordinated large-scale networks that reflect situated responding. More specifically, we predicted that networks underlying the social inference and mentalizing involved in responding to a social threat (in regions that make up the "default mode" network) would be reliably more active during social evaluation situations. In contrast, networks underlying the visuospatial attention and action planning involved in responding to a physical threat would be reliably more active during physical danger situations. The results supported these hypotheses. In line with emerging psychological construction approaches, the findings suggest that coordinated brain networks offer a systematic way to interpret the distributed patterns that underlie the diverse situational contexts characterizing emotional life</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2005SPIE.5804..141W','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2005SPIE.5804..141W"><span id="translatedtitle">Collaborative engagement <span class="hlt">experiment</span> (CEE)</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Wade, Robert L.; Reames, Joseph M.</p> <p>2005-05-01</p> <p>Unmanned ground and air systems operating in collaboration have the potential to provide future Joint Forces a significant capability for operations in complex terrain. Ground and air collaborative engagements potentially offer force conservation, perform timely acquisition and dissemination of essential combat information, and can eliminate high value and time critical targets. These engagements can also add considerably to force survivability by reducing soldier and equipment exposure during critical operations. The Office of the Secretary of Defense, Joint Robotics Program (JRP) sponsored Collaborative Engagement <span class="hlt">Experiment</span> (CEE) is a consolidation of separate Air Force, Army and Navy collaborative efforts to provide a Joint capability. The Air Force Research Laboratory (AFRL), Material and Manufacturing Directorate, Aerospace Expeditionary Force Division, Force Protection Branch (AFRLMLQF), The Army Aviation and Missile Research, Development and Engineering Center (AMRDEC) Joint Technology Center (JTC)/Systems Integration Laboratory (SIL), and the Space and Naval Warfare Systems Center-San Diego (SSC San Diego) are conducting technical research and proof of principle for an envisioned operational concept for extended range, three dimensional, collaborative operations between unmanned systems, with enhanced situational awareness for lethal operations in complex terrain. This program will assess information requirements and conduct <span class="hlt">experiments</span> to identify and resolve technical risks for collaborative engagements using Unmanned Ground Vehicles (UGVs) and Unmanned Aerial Vehicles (UAVs). It will research, develop and physically integrate multiple unmanned systems and conduct live collaborative <span class="hlt">experiments</span>. Modeling and Simulation systems will be upgraded to reflect engineering fidelity levels to greater understand technical challenges to operate as a team. This paper will provide an update of a multi-year program and will concentrate primarily on the JTC</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..700O&link_type=ABSTRACT','NASAADS'); return false;" href="http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..700O&link_type=ABSTRACT"><span id="translatedtitle"><span class="hlt">Experience</span> the Moon</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Ortiz-Gil, A.; Benacchio, L.; Boccato, C.</p> <p>2011-10-01</p> <p>The Moon is, together with the Sun, the very first astronomical object that we <span class="hlt">experience</span> in our life. As this is an exclusively visual <span class="hlt">experience</span>, people with visual impairments need a different mode to <span class="hlt">experience</span> it too. This statement is especially true when events, such as more and more frequent public observations of sky, take place. This is the reason why we are preparing a special package for visual impaired people containing three brand new items: 1. a tactile 3D Moon sphere in Braille with its paper key in Braille. To produce it we used imaging data obtained by NASA's mission Clementine, along with free image processing and 3D rendering software. In order to build the 3D small scale model funding by Europlanet and the Italian Ministry for Research have been used. 2. a multilingual web site for visually impaired users of all ages, on basic astronomy together with an indepth box about the Moon; 3. a book in Braille with the same content of the Web site mentioned above. All the items will be developed with the collaboration of visually impaired people that will check each step of the project and support their comments and criticism to improve it. We are going to test this package during the next International Observe the Moon Night event. After a first testing phase we'll collect all the feedback data in order to give an effective form to the package. Finally the Moon package could be delivered to all those who will demand it for outreach or educational goals.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19910005388','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19910005388"><span id="translatedtitle">Initial blood storage <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Surgenor, Douglas MACN.</p> <p>1988-01-01</p> <p>The possibility of conducting <span class="hlt">experiments</span> with the formed elements of the blood under conditions of microgravity opens up important opportunities to improve the understanding of basic formed element physiology, as well as, contribution to improved preservation of the formed elements for use in transfusion. The physiological, biochemical, and physical changes of the membrane of the erythrocyte, platelet, and leukocyte was studied during storage under two specific conditions: standard blood bank conditions and microgravity, utilizing three FDA approved plastic bags. Storage lesions; red cell storage on Earth; platelet storage on Earth; and leukocyte storage Earth were examined. The interaction of biomaterials and blood cells was studied during storage.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19800033281&hterms=photochromism&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3Dphotochromism','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19800033281&hterms=photochromism&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3Dphotochromism"><span id="translatedtitle">Geophysical fluid flow <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Broome, B. G.; Fichtl, G.; Fowlis, W.</p> <p>1979-01-01</p> <p>The essential fluid flow processes associated with the solar and Jovian atmospheres will be examined in a laboratory <span class="hlt">experiment</span> scheduled for performance on Spacelab Missions One and Three. The experimental instrumentation required to generate and to record convective fluid flow is described. Details of the optical system configuration, the lens design, and the optical coatings are described. Measurement of thermal gradient fields by schlieren techniques and measurement of fluid flow velocity fields by photochromic dye tracers is achieved with a common optical system which utilizes photographic film for data recording. Generation of the photochromic dye tracers is described, and data annotation of experimental parameters on the film record is discussed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19730013031&hterms=transponders&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D90%26Ntt%3Dtransponders','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19730013031&hterms=transponders&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D90%26Ntt%3Dtransponders"><span id="translatedtitle">S band transponder <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Sjogren, W. L.; Muller, P. M.; Wollenhaupt, W. R.</p> <p>1972-01-01</p> <p>It is reported that this <span class="hlt">experiment</span> measures the lunar gravitational field, which in turn provides information on the distribution of lunar mass and its correlation with surface features such as craters, mountains, and maria. The lunar gravitational field is measured by observing the dynamical motion of spacecraft in free-fall orbits. Effective detection of mass variations is greatly enhanced by low-altitude trajectories, such as the eccentric orbits during revolutions 3 to 16 of the Apollo 16 spacecraft and the 11 km periapsis of the Apollo 16 subsatellite during May 1972. The observational data are the precise earth-based radio tracking measurements initially used for real-time navigation.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2011PhyEd..46...29K','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2011PhyEd..46...29K"><span id="translatedtitle"><span class="hlt">Experiments</span> with a varicap</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Kraftmakher, Yaakov</p> <p>2011-01-01</p> <p>The capacitance versus voltage relationship (the C-V characteristic) of a varicap is determined, and the device is used for tuning an LC circuit and for building a voltage-controlled oscillator. With a data-acquisition system, the C-V characteristic can be demonstrated in a short time. The necessary equipment includes a function generator, an oscilloscope, a 9 V battery, capacitors, resistors, coils, and a multimeter. The varicap provides good opportunities for experimentation with electrical circuits. The <span class="hlt">experiments</span> may be offered as student activities.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19890006946','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19890006946"><span id="translatedtitle"><span class="hlt">Experience</span> with the CAIS</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Tighe, Michael F.</p> <p>1986-01-01</p> <p>Intermetrics' <span class="hlt">experience</span> is that the Ada package construct, which allows separation of specification and implementation allows specification of a CAIS that is transportable across varying hardware and software bases. Additionally, the CAIS is an excellent basis for providing operating system functionality to Ada applications. By allowing the Byron APSE to be moved easily from system to system, and allowing significant re-writes of underlying code. Ada and the CAIS provide portability as well as transparency to change at the application operating system interface level.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/992195','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/992195"><span id="translatedtitle">Fundamental <span class="hlt">experiments</span> in velocimetry</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Briggs, Matthew Ellsworth; Hull, Larry; Shinas, Michael</p> <p>2009-01-01</p> <p>One can understand what velocimetry does and does not measure by understanding a few fundamental <span class="hlt">experiments</span>. Photon Doppler Velocimetry (PDV) is an interferometer that will produce fringe shifts when the length of one of the legs changes, so we might expect the fringes to change whenever the distance from the probe to the target changes. However, by making PDV measurements of tilted moving surfaces, we have shown that fringe shifts from diffuse surfaces are actually measured only from the changes caused by the component of velocity along the beam. This is an important simplification in the interpretation of PDV results, arising because surface roughness randomizes the scattered phases.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/15016687','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/15016687"><span id="translatedtitle">PROGRESS ON STELLA <span class="hlt">EXPERIMENT</span>.</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>KIMURA,W.D.; CAMPBELL,L.P.; GOTTSCHALK,S.C.; QUIMBY,D.C.; ROBINSON,K.E.; STEINHAUER,L.C.; BABZIEN,M.; BEN-ZVI,I.; GALLARDO,J.C.; KUSCHE,K.P.; POGORELSKY,I.V.; SKARITKA,J.; VAN STEENBERGEN,A.; YAKIMENKO,V.; CLINE,D.B.; HE,P.; LIU,Y.; FIORITO,R.B.; PANTELL,R.H.; RULE,D.W.; SANDWEISS,J.</p> <p>1999-03-01</p> <p>Progress is reported on the Staged Electron Laser Acceleration (STELLA) <span class="hlt">experiment</span>, which has been assembled on the BNL Accelerator Test Facility (ATF). The primary goal of STELLA is to demonstrate staging of the laser acceleration process by using the BNL inverse free electron laser (IFEL) as a prebuncher, which generates {approx} 1-{micro}m long microbunches, and accelerating these microbunches using an inverse Cerenkov acceleration (ICA) stage. Experimental runs are underway to recommission the IFEL and ICA systems separately, and reestablish the: microbunching process. Staging will then be examined by running both the IFEL and ICA systems together.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/19959409','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/19959409"><span id="translatedtitle">Microsurgical teaching: our <span class="hlt">experience</span>.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Cigna, Emanuele; Bistoni, Giovanni; Trignano, Emilio; Tortorelli, Giovanni; Spalvieri, Cristina; Scuderi, Nicolò</p> <p>2010-06-01</p> <p>Today, microsurgery plays a fundamental role in plastic surgery, expanding surgical possibilities for cancer, trauma and aesthetic-related surgery. However, throughout the years, teaching and training systems for microsurgery have not evolved in the same manner as its operative techniques. The use of rats has been, and still is, the standard model for microsurgery training. However, stringent laws for animals used in <span class="hlt">experiments</span>, combined with the rising costs of this model, have instigated the need to find alternative methods. To overcome this dilemma, we have developed a three-step approach to optimise microsurgery training, particularly when there is no access to animal laboratories. PMID:19959409</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20090006892','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20090006892"><span id="translatedtitle">Integrated Immune <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Crucian, Brian</p> <p>2009-01-01</p> <p>This viewgraph presentation reviews NASA's Integrated Immune <span class="hlt">Experiment</span>. The objectives include: 1) Address significant lack of data regarding immune status during flight; 2) Replace several recent immune studies with one comprehensive study that will include in-flight sampling; 3) Determine the in-flight status of immunity, physiological stress, viral immunity/reactivation; 4) Determine the clinical risk related to immune dysregulation for exploration class spaceflight; and 5) Determine the appropriate monitoring strategy for spaceflight-associated immune dysfunction, that could be used for the evaluation of countermeasures.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19910005414','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19910005414"><span id="translatedtitle">NASA's supercomputing <span class="hlt">experience</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Bailey, F. Ron</p> <p>1990-01-01</p> <p>A brief overview of NASA's recent <span class="hlt">experience</span> in supercomputing is presented from two perspectives: early systems development and advanced supercomputing applications. NASA's role in supercomputing systems development is illustrated by discussion of activities carried out by the Numerical Aerodynamical Simulation Program. Current capabilities in advanced technology applications are illustrated with examples in turbulence physics, aerodynamics, aerothermodynamics, chemistry, and structural mechanics. Capabilities in science applications are illustrated by examples in astrophysics and atmospheric modeling. Future directions and NASA's new High Performance Computing Program are briefly discussed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19930020572','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19930020572"><span id="translatedtitle">Rotational fluid flow <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>1991-01-01</p> <p>This project which began in 1986 as part of the Worcester Polytechnic Institute (WPI) Advanced Space Design Program focuses on the design and implementation of an electromechanical system for studying vortex behavior in a microgravity environment. Most of the existing equipment was revised and redesigned by this project team, as necessary. Emphasis was placed on documentation and integration of the electrical and mechanical subsystems. Project results include reconfiguration and thorough testing of all hardware subsystems, implementation of an infrared gas entrainment detector, new signal processing circuitry for the ultrasonic fluid circulation device, improved prototype interface circuits, and software for overall control of <span class="hlt">experiment</span> operation.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1988cmnd.book....1M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1988cmnd.book....1M"><span id="translatedtitle"><span class="hlt">Experiments</span> in chaotic dynamics</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Moon, F. C.</p> <p></p> <p>Mathematical tools for the description of chaotic phenomena in physical systems are described and demonstrated, summarizing in part the principles presented in the author's book-length treatise on chaotic vibrations (Moon, 1987). Consideration is given to phase-plane and pseudo-phase-plane techniques, bifurcation diagrams, FFTs, autocorrelation functions, single and double Poincare maps, reduction to one-dimensional maps, Liapunov exponents, fractal dimensions, invariant distributions, chaos diagrams, and basin-boundary diagrams. The results obtained by application of these methods to data from typical mechanical and electronic oscillation <span class="hlt">experiments</span> are presented graphically and discussed in detail.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19720015171&hterms=mechanics+soils&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3Dmechanics%2Bsoils','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19720015171&hterms=mechanics+soils&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3Dmechanics%2Bsoils"><span id="translatedtitle">Soil mechanics <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Mitchell, J. K.; Bromwell, L. G.; Carrier, W. D., III; Costes, N. C.; Houston, W. N.; Scott, R. F.</p> <p>1972-01-01</p> <p>The Apollo 15 soil-mechanics <span class="hlt">experiment</span> has offered greater opportunity for study of the mechanical properties of the lunar soil than previous missions, not only because of the extended lunar-surface stay time and enhanced mobility provided by the lunar roving vehicle (rover), but also because four new data sources were available for the first time. These sources were: (1) the self-recording penetrometer (SRP), (2) new, larger diameter, thin-walled core tubes, (3) the rover, and (4) the Apollo lunar-surface drill (ALSD). These data sources have provided the best bases for quantitative analyses thus far available in the Apollo Program.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/6263329','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/6263329"><span id="translatedtitle">Results of railgun <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Hawke, R.S.; Brooks, A.L.; Fowler, C.M.; Peterson, D.R.</p> <p>1983-04-01</p> <p>During the 1979 Megagauss II conference the hypervelocity potential of railguns and the pulsed power technology needed to power them were discussed. Since then, many laboratories have initiated railgun R and D projects for a variety of potential applications. Los Alamos and Lawrence Livermore National Laboratories initiated a collaborative experimental railgun project which resulted in several successes in accelerating projectiles to high velocities, emphasized the limits on railgun operation, and indicated that the numerical modeling of railgun operation was in good agreement with the <span class="hlt">experiments</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/347790','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/biblio/347790"><span id="translatedtitle">Materials Adherence <span class="hlt">Experiment</span>: Technology</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Jenkins, P.P.; Landis, G.A.; Oberle, L.G.</p> <p>1997-12-31</p> <p>NASA`s Mars Pathfinder mission, launched December 4, 1996, reflects a new philosophy of exploiting new technologies to reduce mission cost and accelerate the pace of space exploration. Pathfinder will demonstrate a variety of new technologies aimed at reducing the cost of Mars exploration. Chief among these will be the demonstration of a solar-powered spacecraft on the surface of Mars. The Materials Adherence <span class="hlt">Experiment</span> on Pathfinder was designed to measure the degradation of solar arrays due to dust settling out of the atmosphere and blocking light to the solar array, lowering the array power output.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19730013015&hterms=Seismic+waves&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D50%26Ntt%3D%2528Seismic%2Bwaves%2529','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19730013015&hterms=Seismic+waves&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D50%26Ntt%3D%2528Seismic%2Bwaves%2529"><span id="translatedtitle">Active seismic <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Kovach, R. L.; Watkins, J. S.; Talwani, P.</p> <p>1972-01-01</p> <p>The Apollo 16 active seismic <span class="hlt">experiment</span> (ASE) was designed to generate and monitor seismic waves for the study of the lunar near-surface structure. Several seismic energy sources are used: an astronaut-activated thumper device, a mortar package that contains rocket-launched grenades, and the impulse produced by the lunar module ascent. Analysis of some seismic signals recorded by the ASE has provided data concerning the near-surface structure at the Descartes landing site. Two compressional seismic velocities have so far been recognized in the seismic data. The deployment of the ASE is described, and the significant results obtained are discussed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=20020067630&hterms=tesla&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3Dtesla','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=20020067630&hterms=tesla&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3Dtesla"><span id="translatedtitle">Magnetohydrodynamic Augmented Propulsion <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Litchford, Ron J.; Cole, John; Lineberry, John; Chapman, Jim; Schmidt, Harold; Cook, Stephen (Technical Monitor)</p> <p>2002-01-01</p> <p>A fundamental obstacle to routine space access is the specific energy limitations associated with chemical fuels. In the case of vertical take-off, the high thrust needed for vertical liftoff and acceleration to orbit translates into power levels in the 10 GW range. Furthermore, useful payload mass fractions are possible only if the exhaust particle energy (i.e., exhaust velocity) is much greater than that available with traditional chemical propulsion. The electronic binding energy released by the best chemical reactions (e.g., LOX/LH2 for example, is less than 2 eV per product molecule (approx. 1.8 eV per H2O molecule), which translates into particle velocities less than 5 km/s. Useful payload fractions, however, will require exhaust velocities exceeding 15 km/s (i.e., particle energies greater than 20 eV). As an added challenge, the envisioned hypothetical RLV (reusable launch vehicle) should accomplish these amazing performance feats while providing relatively low acceleration levels to orbit (2-3g maximum). From such fundamental considerations, it is painfully obvious that planned and current RLV solutions based on chemical fuels alone represent only a temporary solution and can only result in minor gains, at best. What is truly needed is a revolutionary approach that will dramatically reduce the amount of fuel and size of the launch vehicle. This implies the need for new compact high-power energy sources as well as advanced accelerator technologies for increasing engine exhaust velocity. Electromagnetic acceleration techniques are of immense interest since they can be used to circumvent the thermal limits associated with conventional propulsion systems. This paper describes the Magnetohydrodynamic Augmented Propulsion <span class="hlt">Experiment</span> (MAPX) being undertaken at NASA Marshall Space Flight Center (MSFC). In this <span class="hlt">experiment</span>, a 1-MW arc heater is being used as a feeder for a 1-MW magnetohydrodynamic (MHD) accelerator. The purpose of the <span class="hlt">experiment</span> is to demonstrate</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li class="active"><span>24</span></li> <li><a href="#" onclick='return showDiv("page_25");'>25</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_24 --> <div id="page_25" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li class="active"><span>25</span></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="481"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2013APS..APRC15005S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2013APS..APRC15005S"><span id="translatedtitle">The OLYMPUS <span class="hlt">Experiment</span> Simulation</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Schmidt, Axel</p> <p>2013-04-01</p> <p>The OLYMPUS <span class="hlt">Experiment</span> aims to measure the ratio of electron-proton to positron-proton elastic scattering cross-sections to better than 1% systematic uncertainty. Achieving this goal requires a precise understanding of a wide range of systematic effects, such as the radiative corrections internal to the reaction, the varying acceptance of the detector aparatus, and efficiency of the tracking algorithms. A detailed Geant4 simulation of the OLYMPUS <span class="hlt">experiment</span> has been developed to study these effects, and using the Monte Carlo method, properly account for their convolution. Radiative corrections are applied by the event generator, whose events are propagated through the simulation. Simulated detector signals are produced with identical format to the raw OLYMPUS data, so that simulated data can be processed using the same analysis software. The simulation, therefore, serves as a benchmark for comparison with the final OLYMPUS results. A discussion of the radiative corrections procedure and an overview of the simulation will be presented. This work is supported by DOE Grant DE-FG02-94ER40818.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19950008257','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19950008257"><span id="translatedtitle">Olympus propagation <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Arbesser-Rastburg, Bertram</p> <p>1994-01-01</p> <p>A summary of the activities of the OPEX (Olympus Propagation EXperimenters) group is given and some of the recent findings are presented. OLYMPUS, a telecommunication satellite owned by the European Space Agency, was launched on 12 June 1989. After the in-orbit tests were completed (in September 1989) the first propagation <span class="hlt">experiments</span> started. Throughout 1990 the spacecraft functioned very well and a large number of experimenters received the beacon signals. On 29 May 1991 the spacecraft became inoperational after a major technical problem. With a series of complicated procedures OLYMPUS was recovered on 15 August 1991 - the first time in history that a civilian telecommunications satellite was brought back to service after losing power and telemetry. The propagation <span class="hlt">experiments</span> were back on track. However, the recovery had used up so much fuel that the North-South station keeping had to be abandoned, which led to a natural increase of inclination at a rate of about 0.8 deg per year. On 10 October 1992 the second 30 GHz beacon tube failed, causing a loss of this beacon signal. The other two beacon frequencies continued to deliver a stable signal for more than two years. On 12 August 1993 the spacecraft experienced another problem with the altitude control, but this time there was not enough fuel left for a recovery maneuver and thus the mission came to an end.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ncbi.nlm.nih.gov/pubmed/17562652','PUBMED'); return false;" href="http://www.ncbi.nlm.nih.gov/pubmed/17562652"><span id="translatedtitle">The STARTRACK <span class="hlt">experiment</span>.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Denardo, L; Conte, V; Poggi, M; Canella, S; Colautti, P; Moro, D; Tornielli, G</p> <p>2007-01-01</p> <p>STARTRACK is the acronym of an <span class="hlt">experiment</span> that aims to measure ionisation cluster distributions in nanometric sites placed at different distances from an accelerated charged particle track. STARTRACK will first use the 20 nm wall-less detector, already used for studying the nanometric track structure of an alpha particle, and then a new detector designed for measuring ionisation clusters in 10 nm sites. The <span class="hlt">experiment</span> is mounted on the beam line of the Tandem-Alpi accelerator facility of the Legnaro Laboratories, which supplies ion beams from hydrogen to gold up to energy ranging from 7 to 28 MeV/amu. Track nanodosimetry aims to measure ionisation clusters along and aside the ion track down to occurrence probability of 10(-5). To reach such a goal at least 10(6) events have to be collected and the cluster pile-up probability has to be reduced to less than 10(-6). By using a beam profile detector, which is sensitive to very weak currents, and an event rejector counter, such an aim is feasible. PMID:17562652</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2014JPSCP...1a3107N&link_type=ABSTRACT','NASAADS'); return false;" href="http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2014JPSCP...1a3107N&link_type=ABSTRACT"><span id="translatedtitle">POLARBEAR CMB Polarization <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Nishino, H.; Ade, P.; Akiba, Y.; Anthony, A.; Arnold, K.; Barron, D.; Boettger, D.; Borrill, J.; Chapmann, S.; Chinone, Y.; Dobbs, M. A.; Errard, J.; Fabbian, G.; Feng, C.; Flanigan, D.; Fuller, G.; Ghribi, A.; Grainger, W.; Halverson, N.; Hasegawa, M.; Hattori, K.; Hazumi, M.; Holzapfel, W. L.; Howard, J.; Hyland, P.; Inoue, Y.; Jaffe, A.; Jaehnig, G.; Kaneko, Y.; Katayama, N.; Keating, B.; Kermish, Z.; Kimura, N.; Kisner, T.; Lee, A. T.; Le Jeune, M.; Linder, E.; Lungu, M.; Matsuda, F.; Matsumura, T.; Miller, N. J.; Morii, H.; Moyerman, S.; Myers, M. J.; O'Brient, R.; Okamura, T.; Paar, H.; Peloton, J.; Quealy, E.; Reichardt, C. L.; Richards, P. L.; Ross, C.; Shimizu, A.; Shimon, M.; Shimmin, C.; Sholl, M.; Siritanasak, P.; Spieler, H.; Stebor, N.; Steinbach, B.; Stompor, R.; Suzuki, A.; Suzuki, J.; Tanaka, K.; Tomaru, T.; Tucker, C.; Yadav, A.; Zahn, O.</p> <p></p> <p>POLARBEAR is a ground-based <span class="hlt">experiment</span> in the Atacama desert in hile, measuring the polarization of the Cosmic Microwave Background (CMB) radiation. One of the science goals of POLARBEAR is to detect the B-mode polarization pattern of the CMB produced by primordial gravitational waves from the epoch of inflation. The detection of the B-mode polarization provides strong evidence for inflationary cosmological models. POLARBEAR is expected to reach a sensitivity to the tensor-to-scalar ratio r = 0.025 at 95% confidence level, using the data from two years of observation. With a beam size of 3.5 arcminutes, POLARBEAR is also sensitive to B-mode polarization signals at small-angular scales produced by weak gravitational lensing of large-scale structure. POLARBEAR is expected to provide a constraint on the sum of neutrino masses because of their effect on the large-scale structure. POLARBEAR was deployed in late 2011 and started observing in early 2012 at 150 GHz with an array of 1,274 polarization sensitive antenna-coupled Transition Edge Sensor (TES) bolometers. The current status of the POLARBEAR <span class="hlt">experiment</span> is reported.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015SPIE.9512E..1MM','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015SPIE.9512E..1MM"><span id="translatedtitle">Operational <span class="hlt">experience</span> at ELBE</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Michel, P.; Lehnert, U.; Seidel, W.</p> <p>2015-05-01</p> <p>The ELBE center for high power radiation sources is the largest user facility in the Helmholtz-Zentrum Dresden- Rossendorf. The facility is based on a 36 MeV superconducting RF Linac which can be operated up to 1.6 mA in cw mode. The electron beam is used to generate secondary radiation, such as infrared light (Free Electron Lasers), coherent THz radiation, MeV-Bremsstrahlung, fast neutrons and positrons for a wide range of basic research like semiconductor physics, nuclear astrophysics and radio biological investigations. Two high power laser systems (500 TW Ti:Sa laser, 2 PW diode pumped laser) are under construction for laser acceleration <span class="hlt">experiments</span> and X-ray generation by Thomson scattering. The FELs are in operation since 2004 (mid-IR FEL, 4-22μm) and 2006 (far-IF FEL, 20-250μm). The fundamental features of the ELBE IR FELs, the FEL instrumentation and advanced beam diagnostics for the photon beam are described. During ten years of user operation <span class="hlt">experiences</span> and statistical data were collected.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2011PhPro..20..212T','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2011PhPro..20..212T"><span id="translatedtitle">An <span class="hlt">Experiment</span> in Synchronicity</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Thomson, S.; Dunseath, W. J. R.</p> <p></p> <p>Click here and insert your abstract text. Possible states theory generalizes about the process of change within a finite and discrete model of the universe. The possible states consist of all interactions between objects, including past, future and possible interactions. The theory posits a non-electromagnetic model of change in which change propagates without reference to space-time. The theory delivers verifiable predictions and is generally consistent with quantum theory. It offers the prospect of nonlocal connections between objects and change that is not constrained by conservation laws. The value of the concept as a basis for technology development depends upon the ability to manipulate the possible states, specifically to produce coherence in selected collections of states. An <span class="hlt">experiment</span> is devised in which a coherent state path is created between the experimental components and loaded through interaction with non-coherent states. Discharge of coherence results in a burst of synchronistic events compatible with theoretical expectations. The <span class="hlt">experiment</span> validates a specific control strategy and yields a large timewise anomaly. The results shed light on a potential sentient intelligence and upon the development of coherence in the possible states and enable a major advance in the control of change.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1994prex.meet....7A','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1994prex.meet....7A"><span id="translatedtitle">Olympus propagation <span class="hlt">experiments</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Arbesser-Rastburg, Bertram</p> <p>1994-08-01</p> <p>A summary of the activities of the OPEX (Olympus Propagation EXperimenters) group is given and some of the recent findings are presented. OLYMPUS, a telecommunication satellite owned by the European Space Agency, was launched on 12 June 1989. After the in-orbit tests were completed (in September 1989) the first propagation <span class="hlt">experiments</span> started. Throughout 1990 the spacecraft functioned very well and a large number of experimenters received the beacon signals. On 29 May 1991 the spacecraft became inoperational after a major technical problem. With a series of complicated procedures OLYMPUS was recovered on 15 August 1991 - the first time in history that a civilian telecommunications satellite was brought back to service after losing power and telemetry. The propagation <span class="hlt">experiments</span> were back on track. However, the recovery had used up so much fuel that the North-South station keeping had to be abandoned, which led to a natural increase of inclination at a rate of about 0.8 deg per year. On 10 October 1992 the second 30 GHz beacon tube failed, causing a loss of this beacon signal. The other two beacon frequencies continued to deliver a stable signal for more than two years. On 12 August 1993 the spacecraft experienced another problem with the altitude control, but this time there was not enough fuel left for a recovery maneuver and thus the mission came to an end.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3232712','PMC'); return false;" href="http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3232712"><span id="translatedtitle">Visual <span class="hlt">Experiences</span> during Paralysis</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Whitham, Emma M.; Fitzgibbon, Sean P.; Lewis, Trent W.; Pope, Kenneth J.; DeLosAngeles, Dylan; Clark, C. Richard; Lillie, Peter; Hardy, Andrew; Gandevia, Simon C.; Willoughby, John O.</p> <p>2011-01-01</p> <p>Rationale: Paralyzed human volunteers (n = 6) participated in several studies the primary one of which required full neuromuscular paralysis while awake. After the primary <span class="hlt">experiment</span>, while still paralyzed and awake, subjects undertook studies of humor and of attempted eye-movement. The attempted eye-movements tested a central, intentional component to one’s internal visual model and are the subject of this report. Methods: Subjects reclined in a supportive chair and were ventilated after paralysis (cisatracurium, 20 mg intravenously). In illumination, subjects were requested to focus alternately on the faces of investigators standing on the left and the right within peripheral vision. In darkness, subjects were instructed to look away from a point source of light. Subjects were to report their <span class="hlt">experiences</span> after reversal of paralysis. Results: During attempted eye-movement in illumination, one subject had an illusion of environmental movement but four subjects perceived faces as clearly as if they were in central vision. In darkness, four subjects reported movement of the target light in the direction of attempted eye-movements and three could control the movement of the light at will. Conclusion: The hypothesis that internal visual models receive intended ocular-movement-information directly from oculomotor centers is strengthened by this evidence. PMID:22162967</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015APS..SHK.C3001F','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015APS..SHK.C3001F"><span id="translatedtitle">Initiation Train <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Francois, Elizabeth; Johnson, Carl; Liechty, Gary; Whitley, Von</p> <p>2015-06-01</p> <p>In an effort to evaluate and qualify a new detonator diagnostic, booster selection and main charge configuration, a variety of small-scale tests have been conducted. This paper will describe the needs, testing approach and model validation. Because of the limited size available some novel approaches were made to understand the observed phenomenon. Function time and time of arrival at various locations in the initiation train are desirable data points. Knowing when each segment initiates the next segment and the time to run up to detonation is critical. Results of our <span class="hlt">experiments</span> were modeled for timing accuracy, wave shape and pressure. Agreement between the <span class="hlt">experiments</span> and models will be discussed. The testing that will be discussed is time of arrival wires, PDV, and fiber optic arrays. The time of arrival wire measures the detonator cup breakout time. When correlated to bridge burst, an absolute time is collected. This data point also gives time zero for the booster initiation. Many models actually start at the booster, rather than the detonator, so the inclusion of this data point will improve modeling efforts.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19930061212&hterms=Halogens&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3DHalogens','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19930061212&hterms=Halogens&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3DHalogens"><span id="translatedtitle">The Halogen Occultation <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Russell, James M., III; Gordley, Larry L.; Park, Jae H.; Drayson, S. R.; Hesketh, W. D.; Cicerone, Ralph J.; Tuck, Adrian F.; Frederick, John E.; Harries, John E.; Crutzen, Paul J.</p> <p>1993-01-01</p> <p>The Halogen Occultation <span class="hlt">Experiment</span> (HALOE) uses solar occultation to measure vertical profiles of O3, HCl, HF, CH4, H2O, NO, NO2, aerosol extinction, and temperature versus pressure with an instantaneous vertical field of view of 1.6 km at the earth limb. Latitudinal coverage is from 80 deg S to 80 deg N over the course of 1 year and includes extensive observations of the Antarctic region during spring. The altitude range of the measurements extends from about 15 km to about 60-130 km, depending on channel. <span class="hlt">Experiment</span> operations have been essentially flawless, and all performance criteria either meet or exceed specifications. Internal data consistency checks, comparisons with correlative measurements, and qualitative comparisons with 1985 atmospheric trace molecule spectroscopy (ATMOS) results are in good agreement. Examples of pressure versus latitude cross sections and a global orthographic projection for the September 21 to October 15, 1992, period show the utility of CH4, HF, and H2O as tracers, the occurrence of dehydration in the Antarctic lower stratosphere, the presence of the water vapor hygropause in the tropics, evidence of Antarctic air in the tropics, the influence of Hadley tropical upwelling, and the first global distribution of HCl, HF, and NO throughout the stratosphere. Nitric oxide measurements extend through the lower thermosphere.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2007APS..MARP29005M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2007APS..MARP29005M"><span id="translatedtitle"><span class="hlt">Experiments</span> on Washboard Road</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Morris, Stephen; Taberlet, Nicolas; McElwaine, James; Dalziel, Stuart</p> <p>2007-03-01</p> <p>Granular surfaces to develop lateral ripples (so-called ``washboard" or ``corrugated" road) under the action of rolling wheels. Similar ripples are observed on railroad tracks and many other rolling, load bearing surfaces. Our aim was to investigate this instability of the flat road surface from the point of view of driven, dissipative granular dynamics. We report the results of both laboratory <span class="hlt">experiments</span> and soft-particle direct numerical simulations. The <span class="hlt">experiment</span> consisted of a rotating table 60 cm in radius with a thick layer of sand forming a roadbed around the circumference. A 6 cm radius hard rubber wheel, with a support stationary in the lab frame, rolled on the sand layer. We varied the speed of the table, the details of the grains and the suspension of the wheel. The ripple pattern appears as small patches of travelling waves which eventually spread to the entire circumference. The ripples drift slowly in the driving direction. Interesting secondary dynamics of the saturated ripples were observed, as well as various ripple creation and destruction events. The wavelength of the ripples can be quantized by the finite circumference of the road. All of these effects are captured qualitatively by 2D soft particle simulations in which a disk rolls over a 2D bed of polydisperse particles in a periodic box.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4678876','PMC'); return false;" href="http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4678876"><span id="translatedtitle">RACE AS LIVED <span class="hlt">EXPERIENCE</span></span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Garcia, John A.; Sanchez, Gabriel R.; Sanchez-Youngman, Shannon; Vargas, Edward D.; Ybarra, Vickie D.</p> <p>2015-01-01</p> <p>A growing body of social science research has sought to conceptualize race as a multidimensional concept in which context, societal relations, and institutional dynamics are key components. Utilizing a specially designed survey, we develop and use multiple measures of race (skin color, ascribed race, and discrimination <span class="hlt">experiences</span>) to capture race as “lived experience” and assess their impact on Latinos’ self-rated health status. We model these measures of race as a lived <span class="hlt">experience</span> to test the explanatory power of race, both independently and as an integrated scale with categorical regression, scaling, and dimensional analyses. Our analyses show that our multiple measures of race have significant and negative effects on Latinos’ self-reported health. Skin color is a dominant factor that impacts self-reported health both directly and indirectly. We then advocate for the utilization of multiple measures of race, adding to those used in our analysis, and their application to other health and social outcomes. Our analysis provides important contributions across a wide range of health, illness, social, and political outcomes for communities of color. PMID:26681972</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2013PRSTP...9a0115D','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2013PRSTP...9a0115D"><span id="translatedtitle">Female physicist doctoral <span class="hlt">experiences</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Dabney, Katherine P.; Tai, Robert H.</p> <p>2013-06-01</p> <p>The underrepresentation of women in physics doctorate programs and in tenured academic positions indicates a need to evaluate what may influence their career choice and persistence. This qualitative paper examines eleven females in physics doctoral programs and professional science positions in order to provide a more thorough understanding of why and how women make career choices based on aspects both inside and outside of school and their subsequent interaction. Results indicate that female physicists <span class="hlt">experience</span> conflict in achieving balance within their graduate school <span class="hlt">experiences</span> and personal lives and that this then influences their view of their future careers and possible career choices. Female physicists report both early and long-term support outside of school by family, and later departmental support, as being essential to their persistence within the field. A greater focus on informal and out-of-school science activities for females, especially those that involve family members, early in life may help influence their entrance into a physics career later in life. Departmental support, through advisers, mentors, peers, and women’s support groups, with a focus on work-life balance can help females to complete graduate school and persist into an academic career.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://ntrs.nasa.gov/search.jsp?R=19960045761&hterms=karlsruhe&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D90%26Ntt%3Dkarlsruhe','NASA-TRS'); return false;" href="http://ntrs.nasa.gov/search.jsp?R=19960045761&hterms=karlsruhe&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D90%26Ntt%3Dkarlsruhe"><span id="translatedtitle">The Ulysses dust <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Gruen, E.; Fechtig, H.; Giese, R. H.; Kissel, J.; Maas, D.; McDonnell, A. M.; Morfill, G.; Schwehm, G.; Zook, H. A.</p> <p>1992-01-01</p> <p>The Ulysses dust <span class="hlt">experiment</span> is intended to provide direct observations of dust grains with masses between 10(exp -16) g and 10(exp -6) g in interplanetary space, to investigate their physical and dynamical properties as functions of heliocentric distance and ecliptic latitude. Of special interest is the question of what portion is provided by comets, asteroids and interstellar particles. The investigation is performed with an instrument that measures the mass, speed, flight direction, and electric charge of individual dust particles. It is a multicoincidence detector with a mass sensitivity 10(exp 6) times higher than that of previous in-situ <span class="hlt">experiments</span> which measured dust in the outer solar system. The instrument weighs 3.8 kg, consumes 2.2 W, and has a normal data transmission rate of 8 bits/s in nominal spacecraft tracking mode. On 27 Oct. 1990 the instrument was switched on. The instrument was configured to flight conditions, and science data collection started immediately. At least 44 dust impacts had been recorded by 13 Jan. 1991. Flux values are given covering the heliocentric distance range from 1.04 to 1.7 AU.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3959613','PMC'); return false;" href="http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3959613"><span id="translatedtitle">Rapid Decisions From <span class="hlt">Experience</span></span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Zeigenfuse, Matthew D.; Pleskac, Timothy J.; Liu, Taosheng</p> <p>2014-01-01</p> <p>In many everyday decisions, people quickly integrate noisy samples of information to form a preference among alternatives that offer uncertain rewards. Here, we investigated this decision process using the Flash Gambling Task (FGT), in which participants made a series of choices between a certain payoff and an uncertain alternative that produced a normal distribution of payoffs. For each choice, participants experienced the distribution of payoffs via rapid samples updated every 50 ms. We show that people can make these rapid decisions from <span class="hlt">experience</span> and that the decision process is consistent with a sequential sampling process. Results also reveal a dissociation between these preferential decisions and equivalent perceptual decisions where participants had to determine which alternatives contained more dots on average. To account for this dissociation, we developed a sequential sampling rank-dependent utility model, which showed that participants in the FGT attended more to larger potential payoffs than participants in the perceptual task despite being given equivalent information. We discuss the implications of these findings in terms of computational models of preferential choice and a more complete understanding of <span class="hlt">experience</span>-based decision making. PMID:24549141</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2013APS..SHK.V1004F','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2013APS..SHK.V1004F"><span id="translatedtitle">2169 Steel Waveform <span class="hlt">Experiments</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Furnish, M.; Alexander, C.; Reinhart, W.; Brown, J.</p> <p>2013-06-01</p> <p>In support of efforts to develop multiscale models of materials, we performed eight gas gun impact <span class="hlt">experiments</span> on 2169 steel (21% Cr, 6% Ni, 9% Mn). These <span class="hlt">experiments</span> provided shock, reshock and release velocimetry data, with initial shock stresses ranging from 10 to 50 GPa (particle velocities from 0.25 to 1.05 km/s). Both windowed and free-surface measurements were used, with samples 1 to 5 mm thick. The study focused on dynamic strength determination via the release/reshock paths. Reshock tests with explosively welded impactors produced clean results. The free-surface samples, which were steps on a single piece of steel, showed lower wavespeeds for thin (1 mm) samples than for thicker (2 or 4 mm) samples. A configuration used for the last three shots allowed release information to be determined from these free surface samples as well. The sample strength appears to increase with stress from ~1 GPa to ~3 GPa over this range, consistent with other recent work but about 40% above the Steinberg model. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19960042645','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19960042645"><span id="translatedtitle">GPS Moving Vehicle <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Oaks, O. J.; Reid, Wilson; Wright, James; Duffey, Christopher; Williams, Charles; Warren, Hugh; Zeh, Tom; Buisson, James</p> <p>1996-01-01</p> <p>The Naval Research Laboratory (NRL) in the development of timing systems for remote locations, had a technical requirement for a Y code (SA/AS) Global Positioning System (GPS) precise time transfer receiver (TTR) which could be used both in a stationary mode or mobile mode. A contract was awarded to the Stanford Telecommunication Corporation (STEL) to build such a device. The Eastern Range (ER) als had a requirement for such a receiver and entered into the contract with NRL for the procurement of additional receivers. The Moving Vehicle <span class="hlt">Experiment</span> (MVE) described in this paper is the first in situ test of the STEL Model 5401C Time Transfer System in both stationary and mobile operations. The primary objective of the MVE was to test the timing accuracy of the newly developed GPS TTR aboard a moving vessel. To accomplish this objective, a joint <span class="hlt">experiment</span> was performed with personnel from NRL and the er at the Atlantic Undersea Test and Evaluation Center (AUTEC) test range at Andros Island. Results and discussion of the test are presented in this paper.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jpmc.confQQ...D&link_type=ABSTRACT','NASAADS'); return false;" href="http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jpmc.confQQ...D&link_type=ABSTRACT"><span id="translatedtitle">Advanced Liquid Feed <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Distefano, E.; Noll, C.</p> <p>1993-06-01</p> <p>The Advanced Liquid Feed <span class="hlt">Experiment</span> (ALFE) is a Hitchhiker <span class="hlt">experiment</span> flown on board the Shuttle of STS-39 as part of the Space Test Payload-1 (STP-1). The purpose of ALFE is to evaluate new propellant management components and operations under the low gravity flight environment of the Space Shuttle for eventual use in an advanced spacecraft feed system. These components and operations include an electronic pressure regulator, an ultrasonic flowmeter, an ultrasonic point sensor gage, and on-orbit refill of an auxiliary propellant tank. The tests are performed with two transparent tanks with dyed Freon 113, observed by a camera and controlled by ground commands and an on-board computer. Results show that the electronic pressure regulator provides smooth pressure ramp-up, sustained pressure control, and the flexibility to change pressure settings in flight. The ultrasonic flowmeter accurately measures flow and detects gas ingestion. The ultrasonic point sensors function well in space, but not as a gage during sustained low-gravity conditions, as they, like other point gages, are subject to the uncertainties of propellant geometry in a given tank. Propellant transfer operations can be performed with liquid-free ullage equalization at a 20 percent fill level, gas-free liquid transfer from 20-65 percent fill level, minimal slosh, and can be automated.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19760025001','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19760025001"><span id="translatedtitle">Lunar atmospheric composition <span class="hlt">experiment</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Hoffman, J. H.</p> <p>1975-01-01</p> <p>Apollo 17 carried a miniature mass spectrometer, called the Lunar Atmospheric Composition <span class="hlt">Experiment</span> (LACE), to the moon as part of the Apollo Lunar Surface <span class="hlt">Experiments</span> Package (ALSEP) to study the composition and variations in the lunar atmosphere. The instrument was successfully deployed in the Taurus-Littrow Valley with its entrance aperture oriented upward to intercept and measure the downward flux of gases at the lunar surface. During the ten lunations that the LACE operated, it produced a large base of data on the lunar atmosphere, mainly collected at night time. It was found that thermal escape is the most rapid loss mechanism for hydrogen and helium. For heavier gases, photoionization followed by acceleration through the solar wind electric field accounted for most of the loss. The dominant gases on the moosn were argon and helium, and models formed for their distribution are described in detail. It is concluded that most of the helium in the lunar atmosphere is of solar wind origin, and that there also exist very small amounts of methane, ammonia, and carbon dioxide.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/888759','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/888759"><span id="translatedtitle">The EBEX <span class="hlt">Experiment</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Oxley, P.; Ade, P.; Baccigalupi, C.; deBernardis, P.; Cho, H-M.; Devlin, M.J.; Hanany, S.; Johnson, B.R.; Jones, T.; Lee, A.T.; Matsumura,T.; Miller, A.D.; Milligan, M.; Renbarger, T.; Spieler, H.G.; Stompor,R.; Tucker, G.S.; Zaldarriaga, M.</p> <p>2005-01-06</p> <p>EBEX is a balloon-borne polarimeter designed to measure the intensity and polarization of the cosmic microwave background radiation. The measurements would probe the inflationary epoch that took place shortly after the big bang and would significantly improve constraints on the values of several cosmological parameters. EBEX is unique in its broad frequency coverage and in its ability to provide critical information about the level of polarized Galactic foregrounds which will be necessary for all future CMB polarization <span class="hlt">experiments</span>. EBEX consists of a 1.5 m Dragone-type telescope that provides a resolution of less than 8 arcminutes over four focal planes each of 4. diffraction limited field of view at frequencies up to 450 GHz. The <span class="hlt">experiment</span> is designed to accommodate 330 transition edge bolometric detectors per focal plane, for a total of up to 1320 detectors. EBEX will operate with frequency bands centered at 150, 250, 350, and 450 GHz. Polarimetry is achieved with a rotating achromatic half-wave plate. EBEX is currently in the design and construction phase, and first light is scheduled for 2008.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li class="active"><span>25</span></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_25 --> <center> <div class="footer-extlink text-muted"><small>Some links on this page may take you to non-federal websites. 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