Science.gov

Sample records for plasma lab cgapl

  1. Updates on the Optical Emission Spectroscopy and Thomson Scattering Investigations on the Helicon Plasma Experiment (HPX)

    NASA Astrophysics Data System (ADS)

    Duke-Tinson, Omar; Karama, Jackson; Azzari, Phillip; Royce, James; Page, Eric; Schlank, Carter; Sherman, Justin; Stutzman, Brooke; Zuniga, Jonathan

    2014-10-01

    HPX at the Coast Guard Academy Plasma Laboratory (CGAPL) have set up spectral probes to verify plasma mode transitions to the W-mode. These optical probes utilize movable filters, and ccd cameras to gather data at selected spectral frequency bands. Raw data collected will be used to measure the plasma's relative density, temperature, structure, and behavior during experiments. Direct measurements of the plasma's properties can be determined through modeling and by comparison with the state transition tables, using Optical Emission Spectroscopy (OES). The spectral probes will take advantage of HPX's magnetic field structure to define and measure the plasma's radiation temp as a function of time and space. In addition, the Thomson Scattering (TS) device will measure internal temperature and density data as the HPX plasma transitions through capacitive and inductive modes while developing into helicon plasma. Currently CGAPL is focused on building its laser beam transport and scattered light collection optical systems. Recently, HPX has acquired an Andor ICCD spectrometer for the spectral analysis. Data collected by the TS system will be logged in real time by CGAPL's Data Acquisition (DAQ) system with LabView remote access. Further progress on HPX will be reported. Supported by U.S. DEPS Grant [HEL-JTO] PRWJFY13.

  2. Particle Probe Investigations on the Helicon Plasma Experiment (HPX)

    NASA Astrophysics Data System (ADS)

    Sherman, Justin; James, R. W.; Nolan, S.; Page, E. J.; Romano, B.; Zuniga, J.; Schlank, C.; Lopez, M.; Karama, J.; Duke-Tinson, O.; Stutzman, B. S.

    2013-10-01

    Coast Guard Academy Plasma Lab(CGAPL) has constructed a Helicon Plasma Experiment. Plasmas will be used in high-temperature and -density diagnostic development for future lab investigations of fusion-grade plasma. Efforts to develop and enhance high temperature and density (1013cm-3 and up) helicon plasmas at low pressures (.01T) reported by Toki et al., continue. HPX will integrate a 32-channel National Instruments DAQ(Data Acquisition) board, designed to digitize data from tests. With LabView as the programing language, CGAPL will take samples at 12bits of precision at 2MS/s to create a Graphical User Interface (GUI). The GUI will control experimental variables (one or several concurrent tests) and monitor systems during data collection. Data collection will be conducted with particle probes, currently under construction. Probes, used to discern the plasma mode transitions, will measure plasma particle velocity, temperature, density and floating potential at different regimes. Once independent triple and mach probes for surface point investigations are installed, a triple probe array to produce a more comprehensive density and surface view will follow. Progress on development of GUI and construction of probes will be reported. Supported by U.S. DEPS Grant [HEL-JTO] PRWJFY12.

  3. Low Pressure High Density Plasma Development on a Small Helicon Plasma Experiment (HPX)*

    NASA Astrophysics Data System (ADS)

    James, R. W.; Allen, L. A.; Paolino, R. N.; Thayer, N.; Romano, B.; Stutzman, B. S.; Welicka, C.; Coast Guard Plasma Lab Team

    2011-10-01

    Small helicon plasmas have been employed in various capacities from industry to spacecraft propulsion. At the Coast Guard Academy Plasma Lab (CGAPL), a small Helicon Plasma Experiment (HPX) is being developed to utilize the reputed high densities (1013 cm-3 and higher) at low pressure (.01 T), in high temperature and density diagnostic development for future laboratory investigations. HPX is designed to operate at these high densities and pressure to create repeatedly stable Capacitively Coupled Plasma (CCP) and Inductively Coupled Plasma (ICP) plasmas induced by an RF frequency in the 10 to 70 MHz range. Progress on the development of the RF coupling system, and qualitative observations from the optical and electric diagnostics are to be reported.

  4. Particle Probe Investigations on the Helicon Plasma Experiment (HPX)

    NASA Astrophysics Data System (ADS)

    Sherman, Justin; James, R. W.; Lopez, M.; Nolan, S.; Page, E. L.; Schlank, C.; Stutzman, B. S.; Zuniga, J.

    2012-10-01

    A small Helicon Plasma Experiment (HPX) has been constructed at the Coast Guard Academy Plasma Lab (CGAPL) to utilize the reputed high densities at low pressure (.01 T) [1], in high temperature and density diagnostic development for future laboratory investigations. With the initial construction phase complete, HPX has produced its first plasmas. Efforts to develop and enhance the high temperature and density (10^13 cm-3 and higher) helicon plasmas at low pressures (.01 T) reported by Toki, Shinohara, et. al. continue. Currently, particle probes to measure plasmas' temperatures and densities, necessary to discern the plasma mode transitions, are in development. Construction of independent mach and triple probes for single point surface investigations are underway and once installed, they will be followed by a triple probe array to produce a more comprehensive density and surface view. Progress on the construction and findings of these probes on HPX will be reported.

  5. Incorporation of the Data Acquisition System with a Small Helicon Plasma Experiment (HPX)

    NASA Astrophysics Data System (ADS)

    Nolan, Stephen; James, R. W.; Page, E. L.; Zuniga, J.; Schlank, C.; Lopez, M.; Sherman, J.; Stutzman, B. S.

    2012-10-01

    At the Coast Guard Academy Plasma Lab (CGAPL), a small Helicon Plasma Experiment (HPX) is being developed to utilize the reputed high densities (10^13 cm-3 and higher) at low pressure (.01 T) [1], in high temperature and density diagnostic development for future laboratory investigations. With first plasmas at hand, HPX is constructing triple and mach particle probes, magnetic probes, and a single point Thompson Scattering system for HPX plasma property investigations. A 32-channel National Instruments Data Acquisition (DAQ) Board capable of sampling at 12 bits of precision at 2 MS/s and running multiple simultaneous experiments is currently under construction. This DAQ System with integrated storage and GUI's will gather and digitize plasma data from the associated diagnostics for further analysis. Progress on the current implementation of the DAQ system will be reported.

  6. PlasmaLab/EkoPlasma - The Future of Complex Plasma Research in Space

    NASA Astrophysics Data System (ADS)

    Knapek, Christina; Fortov, Vladimir; Huber, Peter; Mohr, Daniel; Konopka, Uwe; Lipaev, Andrey; Molotkov, Vladimir; Petrov, Oleg; Zähringer, Erich; Thomas, Hubertus

    2016-07-01

    The PlasmaLab project, a Russian-German cooperation, has the aim to develop a future laboratory for the investigation of complex plasmas under microgravity conditions on the International Space Station (ISS). Within the project, a new plasma chamber, the Zyflex chamber, has been developed and is now being prepared to be launched to the ISS in 2020 as a laboratory setup with the name EkoPlasma (Experiment komplex Plasma). The Zyflex chamber is a large, cylindrical plasma chamber with parallel, rf-driven electrodes and a flexible inner geometry. It is designed to extend the accessible experimental parameter range and to allow an independent control of the plasma parameters, therefore increasing the experimental possibilities and expected knowledge gain significantly. Further, a 3D optical diagnostic will allow for the study of particle dynamics in 3D realtime. Possible future research topics include e.g. phase transitions, the dynamics of liquids, phase separation, or turbulence. The experimental setup will be presented, as well as some preliminary results of experiments on earth and in parabolic flights to visualize the possibilities of this new laboratory. This work and some of the authors are funded by DLR/BMWi (FKZ 50WM1441).

  7. Honeycomblike large area LaB6 plasma source for Multi-Purpose Plasma facility.

    PubMed

    Woo, Hyun-Jong; Chung, Kyu-Sun; You, Hyun-Jong; Lee, Myoung-Jae; Lho, Taihyeop; Choh, Kwon Kook; Yoon, Jung-Sik; Jung, Yong Ho; Lee, Bongju; Yoo, Suk Jae; Kwon, Myeon

    2007-10-01

    A Multi-Purpose Plasma (MP(2)) facility has been renovated from Hanbit mirror device [Kwon et al., Nucl. Fusion 43, 686 (2003)] by adopting the same philosophy of diversified plasma simulator (DiPS) [Chung et al., Contrib. Plasma Phys. 46, 354 (2006)] by installing two plasma sources: LaB(6) (dc) and helicon (rf) plasma sources; and making three distinct simulators: divertor plasma simulator, space propulsion simulator, and astrophysics simulator. During the first renovation stage, a honeycomblike large area LaB(6) (HLA-LaB(6)) cathode was developed for the divertor plasma simulator to improve the resistance against the thermal shock fragility for large and high density plasma generation. A HLA-LaB(6) cathode is composed of the one inner cathode with 4 in. diameter and the six outer cathodes with 2 in. diameter along with separate graphite heaters. The first plasma is generated with Ar gas and its properties are measured by the electric probes with various discharge currents and magnetic field configurations. Plasma density at the middle of central cell reaches up to 2.6 x 10(12) cm(-3), while the electron temperature remains around 3-3.5 eV at the low discharge current of less than 45 A, and the magnetic field intensity of 870 G. Unique features of electric property of heaters, plasma density profiles, is explained comparing with those of single LaB(6) cathode with 4 in. diameter in DiPS. PMID:17979417

  8. Honeycomblike large area LaB6 plasma source for Multi-Purpose Plasma facility

    NASA Astrophysics Data System (ADS)

    Woo, Hyun-Jong; Chung, Kyu-Sun; You, Hyun-Jong; Lee, Myoung-Jae; Lho, Taihyeop; Choh, Kwon Kook; Yoon, Jung-Sik; Jung, Yong Ho; Lee, Bongju; Yoo, Suk Jae; Kwon, Myeon

    2007-10-01

    A Multi-Purpose Plasma (MP2) facility has been renovated from Hanbit mirror device [Kwon et al., Nucl. Fusion 43, 686 (2003)] by adopting the same philosophy of diversified plasma simulator (DiPS) [Chung et al., Contrib. Plasma Phys. 46, 354 (2006)] by installing two plasma sources: LaB6 (dc) and helicon (rf) plasma sources; and making three distinct simulators: divertor plasma simulator, space propulsion simulator, and astrophysics simulator. During the first renovation stage, a honeycomblike large area LaB6 (HLA-LaB6) cathode was developed for the divertor plasma simulator to improve the resistance against the thermal shock fragility for large and high density plasma generation. A HLA-LaB6 cathode is composed of the one inner cathode with 4in. diameter and the six outer cathodes with 2in. diameter along with separate graphite heaters. The first plasma is generated with Ar gas and its properties are measured by the electric probes with various discharge currents and magnetic field configurations. Plasma density at the middle of central cell reaches up to 2.6×1012 cm-3, while the electron temperature remains around 3-3.5eV at the low discharge current of less than 45A, and the magnetic field intensity of 870G. Unique features of electric property of heaters, plasma density profiles, is explained comparing with those of single LaB6 cathode with 4in. diameter in DiPS.

  9. Waves In Space Plasmas (WISP): A space plasma lab active experiment

    NASA Technical Reports Server (NTRS)

    Fredricks, R. W.

    1983-01-01

    The Waves in Space Plasmas (WISP) series of Spacelab Space Plasma Labs devoted to active experimentation, are introduced. Space Plasma Lab-1 is keyed to active probing of the ionosphere and magnetosphere using controlled wave injections by the WISP VLF and HF transmitters, supported by a free-flying plasma diagnostics package instrumented with wave receivers and particle probe diagnostics, designed to measure radiation and propagation of plasma waves, precipitated particle fluxes due to wave/particle interactions, and similar phenomena resulting from wave injectons. The VLF transmitter delivers up to 1 kW of RF power into the antenna terminals over the range from 0.3 to 30 kHz. The HF transmitter delivers up to 500 W to the antenna over the range from 1 to 30 MHz. A dipole antenna commandable to any extension up to 300 m tip-to-tip is available.

  10. Progress in Development of Low Pressure High Density Plasmas on a Small Helicon Plasma Experiment (HPX)

    NASA Astrophysics Data System (ADS)

    James, Royce; Lopez, M.; Nolan, S.; Page, E. L.; Schlank, C.; Sherman, J.; Stutzman, B. S.; Zuniga, J.

    2012-10-01

    At the Coast Guard Academy Plasma Lab (CGAPL), a small Helicon Plasma Experiment (HPX) is being developed to utilize the reputed high densities (10^13 cm-3 and higher) at low pressure (.01 T) [1], for eventual high temperature and density diagnostic development in future laboratory investigations. HPX is designed to create repeatedly stable plasmas induced by an RF frequency in the 10 to 70 MHz range and employs an electromagnet to provide the external energy in the plasma's magnetic field to transition from the H-Mode to the Helicon Mode. An acceleration coil, currently under construction, will place the plasma in the vacuum chamber for optical and particle probing. With the initial construction phase complete and first plasmas attained, HPX is constructing triple and mach particle probes, magnetic probes, and a single point 300 W Thompson Scattering system backed by a 32-channel DAQ system capable 12 bits of sampling precision at 2 MS/s for plasma property investigations. Progress on the development of the RF coupling system, magnetic coils, and qualitative observations from the optical and electric diagnostics are to be reported. [4pt] [1] K. Toki, et al., Thin Solid Films 506-507 (2005).

  11. Progress on Development of Low Pressure High Density Plasmas on the Helicon Plasma Experiment (HPX)

    NASA Astrophysics Data System (ADS)

    James, R. W.; Duke-Tinson, O.; Nolan, S.; Page, E. J.; Lopez, M.; Karama, J.; Paolino, R. N.; Schlank, C.; Sherman, J.; Stutzman, B. S.; Crilly, P. B.

    2013-10-01

    At the Coast Guard Academy Plasma Lab (CGAPL), a small Helicon Plasma Experiment (HPX) is being developed to utilize the reputed high densities (1013 cm-3 and higher) at low pressure (.01 T), for eventual high temperature and density diagnostic development in future laboratory investigations. HPX is designed to create repeatedly stable plasmas induced by an RF frequency in the 10 to 70 MHz range. We employ a 400 to 1000 Gauss electromagnet that promotes energy conservation in the plasma via external energy production in the magnetic field facilitated by decreased inertial effects, in order to reach the Helicon Mode. With the initial construction phase complete and repeatable plasmas attained, HPX is constructing triple and mach particle probes, magnetic probes, and a single point 300 W Thompson Scattering system backed by a 32-channel Data Acquisition (DAQ) system capable 12 bits of sampling precision at 2 MS/s for HPX plasma property investigations. Progress on the development of the RF coupling system, Helicon Mode development, magnetic coils, and observations from the optical, particle, and electromagnetic scattering diagnostics will be reported. Supported by U.S. DEPS Grant [HEL-JTO] PRWJFY12.

  12. Progress on Development of Low Pressure High Density Plasmas on the Helicon Plasma Experiment (HPX)

    NASA Astrophysics Data System (ADS)

    James, Royce; Azzari, Phillip; Duke-Tinson, Omar; Frank, John; Karama, Jackson; Hopson, Jordan; Paolino, Richard; Sandri, Eva; Sherman, Justin; Wright, Erin; Turk, Jeremy

    2015-11-01

    The small Helicon Plasma Experiment (HPX) at the Coast Guard Academy Plasma Lab (CGAPL), continues to progress toward utilizing the reputed high densities (1013 cm-3 and higher) at low pressure (.01 T) [1] of helicons, for eventual high temperature and density diagnostic development in future laboratory investigations. HPX is designed to create repeatedly stable plasmas (~ 20 - 30 ns) induced by an RF frequency in the 10 to 70 MHz range. HPX is constructing RF field corrected Langmuir probe raw data will be collected and used to measure the plasma's density, temperature, and potentially the structure and behavior during experiments. Our 2.5 J YAG laser Thomson Scattering system backed by a 32-channel Data Acquisition (DAQ) system is capable 12 bits of sampling precision at 2 MS/s for HPX plasma property investigations. Progress on the development of the RF coupling system, Helicon Mode development, magnetic coils, and observations from the Thomson Scattering, particle, and electromagnetic scattering diagnostics will be reported. Supported by U.S. DEPS Grant [HEL-JTO] PRWJFY15.

  13. Development of Low Pressure High Density Plasmas on the Helicon Plasma Experiment (HPX)

    NASA Astrophysics Data System (ADS)

    James, Royce; Azzari, Phillip; Crilly, Paul; Duke-Tinson, Omar; Karama, Jackson; Paolino, Richard; Schlank, Carter; Sherman, Justin

    2014-10-01

    The small Helicon Plasma Experiment (HPX) at the Coast Guard Academy Plasma Lab (CGAPL), continues to progress toward utilizing the reputed high densities (10 cm-3 and higher) at low pressure (.01 T) of helicons, for eventual high temperature and density diagnostic development in future laboratory investigations. HPX is designed to create repeatedly stable plasmas induced by an RF frequency in the 10 to 70 MHz range. We employ a 400 to 1000 Gauss electromagnet that promotes energy conservation in the plasma via external energy production in the magnetic field facilitated by decreased inertial effects, in order to reach the Helicon Mode. HPX is completing construction of triple and mach particle probes, magnetic probes, and is designing a single point 300 W Thompson Scattering system backed by a 32-channel Data Acquisition (DAQ) system capable 12 bits of sampling precision at 2 MS/s for HPX plasma property investigations. Progress on the development of the RF coupling system, Helicon Mode development, magnetic coils, and observations from the optical, particle, and electromagnetic scattering diagnostics will be reported. Supported by U.S. DEPS Grant [HEL-JTO] PRWJFY13.

  14. Pre-Stage Magnetic Coil to Enhance Helicon Mode Excitation on a Small Helicon Plasma Experiment (HPX)

    NASA Astrophysics Data System (ADS)

    Schlank, Carter; James, Royce; Thayer, Nicholas; Sherman, Justin; Nolan, Stephen; Lopez, Michael

    2012-10-01

    Small helicon plasmas have been employed in various capacities from industry to spacecraft propulsion. At the Coast Guard Academy Plasma Lab (CGAPL), a small Helicon Plasma Experiment (HPX) is being developed to utilize the reputed high density (10^13 cm-3 and higher) at low pressure (.01 T) [1] Helicon Mode Plasmas. HPX will become a high temperature and density diagnostic development test-bed for future laboratory investigations in addition to becoming a tool for future spacecraft propulsion devices. HPX Plasmas are created by imparting directed energy into a Pyrex tube preloaded with Ar gas with fill pressures on the order of 10^4 mTorr utalizing a power supply and matching box can deliver up 250 W of power in a 20 MHz to 100 MHz frequency range. It has been demonstrated [1] that a uniform magnetic field in lower energy level plasmas can facilitate a decrease in inertial effects, which promotes energy conservation within the plasma and provids the necessary external energy in the plasma's magnetic field to reach the Helicon Mode. HPX employes an electromagnet to establish this uniform field. An acceleration coil, currently under construction, will be used to increase the plasma velocity to facilitate partcle and optical probing within the vacuum chamber for experimental analysis. Initial accuracy and calibration measurements of the relative magnetic fields created by both electromagnets will be reported.[0pt][1] K. Toki, et al., Thin Solid Films 506-507 (2005).

  15. Plasma density characterization at SPARC_LAB through Stark broadening of Hydrogen spectral lines

    NASA Astrophysics Data System (ADS)

    Filippi, F.; Anania, M. P.; Bellaveglia, M.; Biagioni, A.; Chiadroni, E.; Cianchi, A.; Di Giovenale, D.; Di Pirro, G.; Ferrario, M.; Mostacci, A.; Palumbo, L.; Pompili, R.; Shpakov, V.; Vaccarezza, C.; Villa, F.; Zigler, A.

    2016-09-01

    Plasma-based acceleration techniques are of great interest for future, compact accelerators due to their high accelerating gradient. Both particle-driven and laser-driven Plasma Wakefield Acceleration experiments are foreseen at the SPARC_LAB Test Facility (INFN National Laboratories of Frascati, Italy), with the aim to accelerate high-brightness electron beams. In order to optimize the efficiency of the acceleration in the plasma and preserve the quality of the accelerated beam, the knowledge of the plasma electron density is mandatory. The Stark broadening of the Hydrogen spectral lines is one of the candidates used to characterize plasma density. The implementation of this diagnostic for plasma-based experiments at SPARC_LAB is presented.

  16. Lab- and space-based researchers discuss plasma experiments

    NASA Astrophysics Data System (ADS)

    Baker, D. N.; Yamada, M.

    Plasma physics provides a common language and set of approaches that tie together all scientists who study the acceleration, transport, and loss processes of the plasma state. Some years ago, researchers from the laboratory and space research communities suggested a workshop to bring together the diverse researchers in the respective fields. A series of workshops on the “Interrelationship between Plasma Experiments in the Laboratory and Space” (IPELS) was established, and the third meeting was held July 24-28, 1995, in the beautiful and historic town of Pitlochry in the Scottish Highlands.The conference reestablished the critical point that plasma physics is an important but surprisingly diversified research discipline. Meetings attendees discussed a number of new approaches to plasma research, including novel diagnostic techniques for use in space, such as active antennas and electric field sounding devices. Detailed discussions covered spacecraft-plasma environment interactions, including vehicle charging and neutral gas release; fundamental aspects of industrial application of dusty plasmas and waves in dusty plasmas; a very distinctive phase transition of coulomb crystals (from solid state to liquid state) in dusty plasmas; and terrella experiments to simulate and study chaotic transport in the ionosphere.

  17. LabVIEW software for analyzing Langmuir probe characteristics in magnetized plasma

    NASA Astrophysics Data System (ADS)

    Gandhi, S.; Binwal, S.; Kabariya, H.; Karkari, S. K.

    2016-03-01

    This paper describes the methodology for processing Ampere-Volts (I-V) characteristics of the Langmuir probe in magnetized plasma using graphical programming language based on LabVIEW. Computing the plasma parameters from I-V characteristic involves several steps that include signal processing, interpolation, linear and non-linear curve fitting based on physical models, finding the derivatives of the experimental curve and determining the zero-crossing of the probe current as a function of the applied voltage. These operations are practically tedious to perform manually causing systematic errors in output parameters. To overcome this challenge, software is developed to analyze the planar Langmuir probe characteristics in magnetized plasma. The software allows simultaneous display of different plasma parameters that helps to verify the consistency of the analyzed plasma parameters with the standard probe theory. Using this software, plasma parameters are obtained in a linear plasma device and its characteristics are discussed.

  18. Note: Arc discharge plasma source with plane segmented LaB6 cathode.

    PubMed

    Akhmetov, T D; Davydenko, V I; Ivanov, A A; Kreter, A; Mishagin, V V; Savkin, V Ya; Shulzhenko, G I; Unterberg, B

    2016-05-01

    A plane cathode composed of close-packed hexagonal LaB6 (lanthanum hexaboride) segments is described. The 6 cm diameter circular cathode is heated by radiation from a graphite foil flat spiral. The cathode along with a hollow copper anode is used for the arc discharge plasma production in a newly developed linear plasma device. A separately powered coil located around the anode is used to change the magnetic field strength and geometry in the anode region. Different discharge regimes were realized using this coil. PMID:27250481

  19. Progress on Pre-Stage Magnetic Coil to Enhance Helicon Mode Excitation and Data Acquisition Software on the Helicon Plasma Experiment (HPX)

    NASA Astrophysics Data System (ADS)

    Sherman, Justin; Azzari, Phillip; Crilly, P. B.; Duke-Tinson, Omar; James, Royce W.; Karama, Jackson; Page, E. J.; Schlank, Carter; Zuniga, Jonathan

    2014-10-01

    CGAPL is conducting small investigations in plasma physics and magneto-hydrodynamics buoy positioning. For data management, we are developing capability to analyze/digitize data with a National Instruments Data Acquisition board, 2 MS/s sampling rate (long time scale), and an Express Octopus card, 125 MS/s sampling rate (short scale). Sampling at 12 bits precision, we use LabVIEW as a programing language; GUIs will control variables in 1 or more concurrent runs and monitor of diagnostics. HPX utilizes high density (1013 cm3 up), low pressure (.01 T) Ar gas (fill pressure: on 104 mTorr order). Helicon/W Mode plasmas become a diagnostics test-bed for other investigations and a tool for future spacecraft propulsion devices. Plasmas created by directing energy into gas-filled Pyrex tube; power supply and matching box, up to 250 W power in 20-100 MHz frequencies, provide energy to ignite. Uniform magnetic field needed to reach the W-Mode. We employ an electromagnet to B-field while an acceleration coil positions plasma in vacuum chamber, facilitating analysis. Initial field requirements and accuracy calibration have been completed. Progress on development and implementation of probes and DAQ/GUI system will be reported. Supported by U.S. DEPS Grant [HEL-JTO] PRWJFY13.

  20. Beam dynamics in resonant plasma wakefield acceleration at SPARC_LAB

    NASA Astrophysics Data System (ADS)

    Romeo, S.; Anania, M. P.; Chiadroni, E.; Croia, M.; Ferrario, M.; Marocchino, A.; Pompili, R.; Vaccarezza, C.

    2016-09-01

    Strategies to mitigate the increase of witness emittance and energy spread in beam driven plasma wakefield acceleration are investigated. Starting from the proposed resonant wakefield acceleration scheme in quasi-non-linear regime that is going to be carried out at SPARC_LAB, we performed systematic scans of the parameters to be used for drivers. The analysis will show that one of the main requirements to preserve witness quality during the acceleration is to have accelerating and focusing fields that are very stable during all the accelerating length. The difference between the dynamics of the leading bunch and the trailing bunch is pointed out. The classical condition on bunch length kpσz =√{ 2 } seems to be an ideal condition for the first driver within long accelerating lengths. The other drivers show to follow different longitudinal matching conditions. In the end a new method for the investigation of the matching for the first driver is introduced.

  1. Betatron radiation based diagnostics for plasma wakefield accelerated electron beams at the SPARC_LAB test facility

    NASA Astrophysics Data System (ADS)

    Shpakov, V.; Anania, M. P.; Biagioni, A.; Chiadroni, E.; Cianchi, A.; Curcio, A.; Dabagov, S.; Ferrario, M.; Filippi, F.; Marocchino, A.; Paroli, B.; Pompili, R.; Rossi, A. R.; Zigler, A.

    2016-09-01

    Recent progress with wake-field acceleration has shown a great potential in providing high gradient acceleration fields, while the quality of the beams remains relatively poor. Precise knowledge of the beam size at the exit from the plasma and matching conditions for the externally injected beams are the key for improvement of beam quality. Betatron radiation emitted by the beam during acceleration in the plasma is a powerful tool for the transverse beam size measurement, being also non-intercepting. In this work we report on the technical solutions chosen at SPARC_LAB for such diagnostics tool, along with expected parameters of betatron radiation.

  2. Black holes in the lab: A review of accretion experiments using plasmas and liquid metals

    NASA Astrophysics Data System (ADS)

    Forest, Cary

    2016-04-01

    In this talk, we will survey recent liquid metal and plasma experiments attempting to study the magnetorotational instability, and ultimately, turbulent transport of angular momentum in laboratory plasmas that can mimic the Keplerian velocity profiles of accretion disks. We will describe the basic requirements of such experiments, the techniques used to create such laboratory experiments, and then review the results obtained thus far. The experiments fall into two camps, the first of which use resisitve liquid metal in couette flow geometry, and the second of which uses confined plasma that is stirred by induction on the plasma boundary. The regimes covered by liquid metals are compimentary: liquid metals are very resistive but nearly inviscid and may be appropriate for modeling protostellar disks, while hot plasmas are more viscous than resisitve and may be appropriate for hot accretion disks around black holes. Both approaches have overcome major experimental hurdles and now have dimensionless parameters that are in a regime where the MRI should be observed.

  3. Status of the Thomson Scattering System Developed for Diagnostic Testing on the Helicon Plasma Experiment (HPX)*

    NASA Astrophysics Data System (ADS)

    Duke-Tinson, O.; James, R.; Nolan, S.; Page, E.; Paolino, R.; Romano, B.; Zuniga, J.; Schlank, C.; Lopez, M.; Karama, J.; Sherman, J.; Stutzman, B.

    2013-10-01

    HPX will utilize Electromagnetic Radiation Scattering to make internal plasma temperature and density point measurements. The United States Coast Guard Academy Plasma Laboratory's (CGAPL's) Thompson Scattering single spatial point system employs a 300 W CW YAG laser. We will use the internal temperature and density measurements in conjunction with the particle and spectral probes to track the plasmas transitions through the capacitive and inductive modes to ultimately reach the helicon mode. Once achieved, the system will be invaluable in making plasma quantitative temperature and density observations that will contribute to a comprehensive plasma profile. Most of the efforts thus far have been in the alignment and repair of the laser system. As this stage nears an end, efforts have begun to shift towards installing the aligned Thomson Scattering system (TS) into its permanent location, with mounted collection optics on HPX's top port. HPX will likely employ a polychrometer similar to the ones currently in use by HBTEP at Columbia University, for the spectral analysis of the scattered light. Data collected by the TS system will then be logged in real time by CGAPL's Data Acquisition (DAQ) system currently under construction. Further additions and progress of the TS alignment, installation, and calibration on HPX will be reported. Supported by U.S. DEPS Grant [HEL-JTO] PRWJFY12.

  4. Plasma nanotextured polymeric lab-on-a-chip for highly efficient bacteria capture and lysis.

    PubMed

    Tsougeni, K; Papadakis, G; Gianneli, M; Grammoustianou, A; Constantoudis, V; Dupuy, B; Petrou, P S; Kakabakos, S E; Tserepi, A; Gizeli, E; Gogolides, E

    2016-01-01

    We describe the design, fabrication, and successful demonstration of a sample preparation module comprising bacteria cell capture and thermal lysis on-chip with potential applications in food sample pathogen analysis. Plasma nanotexturing of the polymeric substrate allows increase of the surface area of the chip and the antibody binding capacity. Three different anti-Salmonella antibodies were directly and covalently linked to plasma treated chips without any additional linker chemistry or other treatment. Then, the Ab-modified chips were tested for their capacity to bind bacteria in the concentration range of 10(2)-10(8) cells per mL; the module exhibited 100% efficiency in Salmonella enterica serovar Typhimurium bacteria capture for cell suspensions below 10(5) cells per mL (10(4) cells injected with a 100 μL sample volume) and efficiency higher than 50% for 10(7) cells per mL. Moreover, thermal lysis achieved on-chip from as low as 10 captured cells was demonstrated and shown to compare well with off-chip lysis. Excellent selectivity (over 1 : 300) was obtained in a sample containing, in addition to S. Typhimurium and E. coli bacteria. PMID:26556673

  5. The BErkeley Lab Laser Accelerator (BELLA): A 10 GeV Laser Plasma Accelerator

    SciTech Connect

    Leemans, W. P.; Duarte, R.; Fournier, S.; Geddes, C. G. R.; Lockhart, D.; Schroeder, C. B.; Toth, C.; Vay, J.-L.; Zimmermann, S.; Esarey, E.

    2010-11-04

    An overview is presented of the design of a 10 GeV laser plasma accelerator (LPA) that will be driven by a PW-class laser system and of the BELLA Project, which has as its primary goal to build and install the required Ti:sapphire laser system for the acceleration experiments. The basic design of the 10 GeV stage aims at operation in the quasi-linear regime, where the laser excited wakes are largely sinusoidal and offer the possibility of accelerating both electrons and positrons. Simulations show that a 10 GeV electron beam can be generated in a meter scale plasma channel guided LPA operating at a density of about 10{sup 17} cm{sup -3} and powered by laser pulses containing 30-40 J of energy in a 50-200 fs duration pulse, focused to a spotsize of 50-100 micron. The lay-out of the facility and laser system will be presented as well as the progress on building the facility.

  6. The BErkeley Lab Laser Accelerator (BELLA): A 10 GeV Laser Plasma Accelerator

    SciTech Connect

    Leemans, W.P.; Duarte, R.; Esarey, E.; Fournier, S.; Geddes, C.G.R.; Lockhart, D.; Schroeder, C.B.; Toth, C.; Vay, J.-L.; Zimmermann, S.

    2010-06-01

    An overview is presented of the design of a 10 GeV laser plasma accelerator (LPA) that will be driven by a PW-class laser system and of the BELLA Project, which has as its primary goal to build and install the required Ti:sapphire laser system for the acceleration experiments. The basic design of the 10 GeV stage aims at operation in the quasi-linear regime, where the laser excited wakes are largely sinusoidal and offer the possibility of accelerating both electrons and positrons. Simulations show that a 10 GeV electron beam can be generated in a meter scale plasma channel guided LPA operating at a density of about 1017 cm-3 and powered by laser pulses containing 30-40 J of energy in a 50- 200 fs duration pulse, focused to a spotsize of 50-100 micron. The lay-out of the facility and laser system will be presented as well as the progress on building the facility.

  7. Virtual Labs.

    ERIC Educational Resources Information Center

    Russo, Ruth

    1997-01-01

    Discusses the potential of computers in teaching laboratories to spare the lives of animals; however, it is felt that in areas of physiology education, virtual labs are not as desirable a learning experience for advanced students as live animal labs. (Author/AIM)

  8. Lab Management.

    ERIC Educational Resources Information Center

    Jones, Linda

    1997-01-01

    Discusses barriers individuals face in using computers in the classroom and the importance of eliminating these barriers. The article notes that visual, mobility, and hearing impairments are the disabilities most often encountered in school labs and that numerous software and hardware tools are available to help individuals with these disabilities…

  9. Reading Lab.

    ERIC Educational Resources Information Center

    Burt, Lorna

    This guide is intended for use in conducting a reading lab for a broad group of workers ranging from nonreaders to persons reading at a fifth-grade level. Presented first is a course overview that includes the following: information on the course's targeted population, student selection process, and demographics; strategies for adult remediation;…

  10. Labs: 1987.

    ERIC Educational Resources Information Center

    Igelsrud, Don, Ed.

    1988-01-01

    This article presents a variety of topics discussed in this column and at a biology teachers' workshop concerning the quality and value of lab techniques used for teaching high school biology. Topics included are Drosophila salivary glands, sea urchins, innovations, dyes and networking. (CW)

  11. D-alpha Probe Investigation on the Helicon Plasma Experiment (HPX)

    NASA Astrophysics Data System (ADS)

    Karama, Jackson; James, Royce; Sherman, Justin; Page, Eric; Schlank, Carter; Stutzman, Brook; Duke-Tenson, Omar; Coast Guard Academy Plasma Laboratory Team

    2013-10-01

    Now that reproducible plasmas have been created on HPX at the Coast Guard Academy Plasma Laboratory (CGAPL) we are starting to set up a spectral probes to help verify plasma mode transitions to the W-mode. These optical probes will utilize movable filters, ccd cameras and diodes, to gather data at selected spectral frequency bands. Data collected will be used to investigate the plasma's structure and behavior during experiments. The spectral probes will take advantage of HPX's magnetic fields to define and measure the plasma's radiation temp as a function of time. A d-alpha filter will allow for the collection of neutral density fluctuations for different plasma behaviors. In d-alpha mode, the probe may also provide some information on the internal plasma structure and perhaps reveal some global plasma interactions. The spectral probe will add to HPX's data collection capabilities and be used in conjunction with the particle probes, and Thomson Scattering device to create a robust picture of the internal and external plasma parameters on HPX. Progress on the construction of the probe will be reported. Supported by U.S. DEPS Grant [HEL-JTO] PRWJFY12.

  12. Lab architecture

    NASA Astrophysics Data System (ADS)

    Crease, Robert P.

    2008-04-01

    There are few more dramatic illustrations of the vicissitudes of laboratory architecturethan the contrast between Building 20 at the Massachusetts Institute of Technology (MIT) and its replacement, the Ray and Maria Stata Center. Building 20 was built hurriedly in 1943 as temporary housing for MIT's famous Rad Lab, the site of wartime radar research, and it remained a productive laboratory space for over half a century. A decade ago it was demolished to make way for the Stata Center, an architecturally striking building designed by Frank Gehry to house MIT's computer science and artificial intelligence labs (above). But in 2004 - just two years after the Stata Center officially opened - the building was criticized for being unsuitable for research and became the subject of still ongoing lawsuits alleging design and construction failures.

  13. Updates on Optical Emission Spectroscopy & Langmuir Probe Investigations on the Helicon Plasma Experiment (HPX)

    NASA Astrophysics Data System (ADS)

    Karama, Jackson; Frank, John; Azzari, Phillip; Hopson, Jordan; James, Royce; Duke-Tinson, Omar; Paolino, Richard; Sandri, Eva; Sherman, Justin; Wright, Eva; Turk, Jeremy

    2015-11-01

    HPX is developing a to shorter lifetime (20 - 30 ns) more reproducible plasma at the Coast Guard Academy Plasma Laboratory (CGAPL). Once achieved, spectral and particle probes will help to verify plasma mode transitions to the W-mode. These optical probes utilize movable filters, and ccd cameras to gather data at selected spectral frequency bands. Once corrections for the RF field are in place for the Langmuir probe, raw data will be collected and used to measure the plasma's density, temperature, and potentially the structure and behavior during experiments. Direct measurements of plasma properties can be determined with modeling and by comparison with the state transition tables, both using Optical Emission Spectroscopy (OES). The spectral will add to HPX's data collection capabilities and be used in conjunction with the particle probes, and Thomson Scattering device to create a robust picture of the internal and external plasma parameters on HPX. Progress on the implementation of the OES and Langmuir probes will be reported. Supported by U.S. DEPS Grant [HEL-JTO] PRWJFY15.

  14. Comparison of two lab-made spray chambers based on MSIS™ for simultaneous metal determination using vapor generation-inductively coupled plasma optical emission spectroscopy.

    PubMed

    Fuentes-Cid, A; Villanueva-Alonso, J; Peña-Vázquez, E; Bermejo-Barrera, P

    2012-10-24

    The objective of this study is to evaluate the performance of two lab-made systems based on the Multimode Introduction System (MSIS™) and the modified MSIS™, to generate and introduce vapors of Ag, Cu, Cd, Cu, Ni, Sn, Zn, and also Au in the ICP torch. An univariate procedure was used to select the optimized working conditions (Ar flow, sample, reductant and waste flows, and reagent concentrations). Optimum conditions for working with modified MSIS were: nitric acid concentration 0.35 M, 8-hydroxyquinoline concentration: 40 mg L(-1), sodium borohydride concentration: 1.75% (w/v)+0.4% (w/v) NaOH, argon purge flow to sweep the vapors to the torch: 1.2 L min(-1), sample flow and sodium borohydride flows: 2.3 L min(-1); waste flow: 7.7 mL min(-1). For the optimum working conditions for lab-made MSIS in dual mode the concentration of 8-hydroxyquinoline was 225 mg L(-1), the Ar purge flow was 0.75 L min(-1), and the conventional nebulization flow was 2.3 L min(-1). The sensitivity obtained was higher using the lab-made MSIS than using the lab-made modified MSIS or a forced outlet gas-liquid separator. The limits of detection were better for Au, Cd, Sn than those obtained using conventional nebulization; the measurements were precise (RSDs≤5% in dual mode) and a good accuracy was obtained in the determination of Cd, Cu, Ni and Zn in a wastewater reference material using aqueous calibration and the lab-made MSIS in dual mode. PMID:23036464

  15. Underwater lab

    NASA Astrophysics Data System (ADS)

    Bell, Peter M.

    The University of Southern California's Catalina Marine Science Center (CMSC) has announced plans to build an underwater marine research laboratory near Santa Catalina Island off the California coast. The project, which will take 2 years to build, will be sponsored by the National Oceanic and Atmospheric Administration (NOAA). The laboratory will be similar in concept to the U.S. Navy Sea Lab III, which was canceled some time ago.The project's purpose is to give divers access to a laboratory without having to surface. The project leader, Andrew Pilmanis, of the University of Southern California, stated recently (Industrial Research and Development, July 1983): “By the nature of the work, scientists require a lot of bottom time, and to do it by scuba isn't practical…. The only way to do that is with saturation diving. Once the diver is saturated with inert gas, whether the individual stays a few days or for months, only one decompression is required.” Divers will typically stay in the laboratory for 7-10 days. The laboratory will initially be placed at a depth of 20 m, later to be refloated and located at depths to 37 m.

  16. Deciphering Your Lab Report

    MedlinePlus

    ... what a lab report may look like. (Note: Pathology reports, such as for a biopsy , will look ... lab report. For some examples of what a pathology report may look like, see The Doctor’s Doctor: ...

  17. Virtual Reality Lab Assistant

    NASA Technical Reports Server (NTRS)

    Saha, Hrishikesh; Palmer, Timothy A.

    1996-01-01

    Virtual Reality Lab Assistant (VRLA) demonstration model is aligned for engineering and material science experiments to be performed by undergraduate and graduate students in the course as a pre-lab simulation experience. This will help students to get a preview of how to use the lab equipment and run experiments without using the lab hardware/software equipment. The quality of the time available for laboratory experiments can be significantly improved through the use of virtual reality technology.

  18. An innovative high-power constant-current pulsed-arc power-supply for a high-density pulsed-arc-plasma ion-source using a LaB6-filament

    NASA Astrophysics Data System (ADS)

    Ueno, A.; Oguri, H.; Ikegami, K.; Namekawa, Y.; Ohkoshi, K.; Tokuchi, A.

    2010-02-01

    An innovative high-power constant-current (CC) pulsed-arc (PA) power-supply (PS) indispensable for a high-density PA plasma ion-source using a lanthanum hexaboride (LaB6) filament was devised by combining a constant-voltage (CV) PA-PS, which is composed of an insulated gate bipolar transistor (IGBT) switch, a CV direct-current (dc) PS and a 270 mF capacitor with a CC-PA-PS, which is composed of an IGBT-switch, a CC-dc-PS and a 400 μH inductor, through the inductor. The hybrid-CC-PA-PS succeeded in producing a flat arc-pulse with a peak power of 56 kW (400 A×140 V) and a duty factor of more than 1.5% (600 μs×25 Hz) for Japan Proton Accelerator Research Complex (J-PARC) H- ion-source stably. It also succeeded in shortening the 99% rising-time of the arc-pulse-current to about 20 μs and tilting up or down the arc-pulse-current arbitrarily and almost linearly by changing the setting voltage of its CV-dc-PS.

  19. An innovative high-power constant-current pulsed-arc power-supply for a high-density pulsed-arc-plasma ion-source using a LaB6-filament.

    PubMed

    Ueno, A; Oguri, H; Ikegami, K; Namekawa, Y; Ohkoshi, K; Tokuchi, A

    2010-02-01

    An innovative high-power constant-current (CC) pulsed-arc (PA) power-supply (PS) indispensable for a high-density PA plasma ion-source using a lanthanum hexaboride (LaB(6)) filament was devised by combining a constant-voltage (CV) PA-PS, which is composed of an insulated gate bipolar transistor (IGBT) switch, a CV direct-current (dc) PS and a 270 mF capacitor with a CC-PA-PS, which is composed of an IGBT-switch, a CC-dc-PS and a 400 microH inductor, through the inductor. The hybrid-CC-PA-PS succeeded in producing a flat arc-pulse with a peak power of 56 kW (400 A x 140 V) and a duty factor of more than 1.5% (600 micros x 25 Hz) for Japan Proton Accelerator Research Complex (J-PARC) H(-) ion-source stably. It also succeeded in shortening the 99% rising-time of the arc-pulse-current to about 20 micros and tilting up or down the arc-pulse-current arbitrarily and almost linearly by changing the setting voltage of its CV-dc-PS. PMID:20192388

  20. Computer Lab Configuration.

    ERIC Educational Resources Information Center

    Wodarz, Nan

    2003-01-01

    Describes the layout and elements of an effective school computer lab. Includes configuration, storage spaces, cabling and electrical requirements, lighting, furniture, and computer hardware and peripherals. (PKP)

  1. NOT Another Lab Report

    ERIC Educational Resources Information Center

    Ende, Fred

    2012-01-01

    Ask students to name the aspects of science class they enjoy most, and working on labs will undoubtedly be mentioned. What often won't be included, however, is writing lab reports. For many students, the process of exploration and data collection is paramount, while the explanation and analysis of findings often takes a backseat. After all, if…

  2. PRIME Lab Radiocarbon Measurements

    NASA Astrophysics Data System (ADS)

    Hillegonds, D. J.; Mueller, K. A.; Ma, X.; Lipschutz, M. E.

    1996-03-01

    The Purdue Rare Isotope Measurement Laboratory (PRIME Lab) is one of three NSF national facilities for accelerator mass spectrometry (AMS), and is the only one capable of determining six cosmogenic radionuclides: 10Be, 14C, 26Al, 36Cl, 41Ca, and 129I. This abstract describes the current status of the radiocarbon analysis program at PRIME Lab.

  3. Making Real Virtual Labs

    ERIC Educational Resources Information Center

    Keller, Harry E.; Keller, Edward E.

    2005-01-01

    Francis Bacon began defining scientific methodology in the early 17th century, and secondary school science classes began to implement science labs in the mid-19th century. By the early 20th century, leading educators were suggesting that science labs be used to develop scientific thinking habits in young students, and at the beginning of the 21st…

  4. Operating a Math Lab.

    ERIC Educational Resources Information Center

    New York State Education Dept., Albany. Bureau of Elementary Curriculum Development.

    The rationale behind the use of mathematics laboratories is stated, then directions for organizing and implementing a math lab are given. Topics such as housekeeping, keeping an inventory, noise level, record keeping and assignments, giving grades, correlating textbooks with a math lab, and finding meaningful laboratory problems are each discussed…

  5. Physics Labs with Flavor

    ERIC Educational Resources Information Center

    Agrest, Mikhail M.

    2009-01-01

    This paper describes my attempts to look deeper into the so-called "shoot for your grade" labs, started in the '90s, when I began applying my teaching experience in Russia to introductory physics labs at the College of Charleston and other higher education institutions in South Carolina. The term "shoot for your grade" became popular among…

  6. A Museum Learning Lab

    ERIC Educational Resources Information Center

    Vandiver, Kathleen M.; Bijur, Jon Markowitz; Epstein, Ari W.; Rosenthal, Beryl; Stidsen, Don

    2008-01-01

    The "Learning Lab: The Cell" exhibit was developed by the Massachusetts Institute of Technology (MIT) Museum and the MIT Center for Environmental Health Sciences (CEHS). Specially designed for middle and high school students, the Learning Lab provides museum visitors of all ages with fascinating insights into how our living cells work. The…

  7. LabSkills

    ERIC Educational Resources Information Center

    O'Brien, Nick

    2010-01-01

    This article describes LabSkills, a revolutionary teaching tool to improve practical science in schools. LabSkills offers the chance to help improve the exposure that the average Key Stage 5 (age 16-19) student has to practical work. This is a huge area for development being highlighted by universities who are seeing a worryingly growing trend in…

  8. Jefferson Lab Virtual Tour

    SciTech Connect

    2013-07-13

    Take a virtual tour of the campus of Thomas Jefferson National Accelerator Facility. You can see inside our two accelerators, three experimental areas, accelerator component fabrication and testing areas, high-performance computing areas and laser labs.

  9. LABS Foundational Technology

    SciTech Connect

    2012-01-01

    They are the inventors of our generation dedicated to exceptional science, advancing the technologies of tomorrow. CO-LABS honors the outstanding achievements of researchers and their impact on the world.

  10. Advanced Lab Consortium ``Conspiracy''

    NASA Astrophysics Data System (ADS)

    Reichert, Jonathan F.

    2006-03-01

    Advanced Laboratory instruction is a time-honored and essential element of an undergraduate physics education. But, from my vantage point, it has been neglected by the two major professional societies, APS and AAPT. At some schools, it has been replaced by ``research experiences,'' but I contend that very few of these experiences in the research lab, particularly in the junior year, deliver what they promise. It is time to focus the attention of APS, AAPT, and the NSF on the advanced lab. We need to create an Advanced Lab Consortium (ALC) of faculty and staff to share experiments, suppliers, materials, pedagogy, ideas, in short to build a professional network for those committed to advanced lab instruction. The AAPT is currently in serious discussions on this topic and my company stands ready with both financial and personnel resources to support the effort. This talk is a plea for co-conspirators.

  11. GeneLab

    NASA Technical Reports Server (NTRS)

    Berrios, Daniel C.; Thompson, Terri G.

    2015-01-01

    NASA GeneLab is expected to capture and distribute omics data and experimental and process conditions most relevant to research community in their statistical and theoretical analysis of NASAs omics data.

  12. Jefferson Lab Virtual Tour

    ScienceCinema

    None

    2014-05-22

    Take a virtual tour of the campus of Thomas Jefferson National Accelerator Facility. You can see inside our two accelerators, three experimental areas, accelerator component fabrication and testing areas, high-performance computing areas and laser labs.

  13. Virtual labs: a substitute for traditional labs?

    PubMed

    Scheckler, Rebecca K

    2003-01-01

    Current technologies give us the ability to enhance and replace developmental biology classes with computer-based resources, often called virtual labs. In the process of using these resources, teachers may be tempted to neglect the simpler technologies and lab bench activities, which can be labor intensive. In this paper, I take a critical look at the role of computer-based materials for the teaching of developmental biology in order to aid teachers in assessing their value. I conclude that while digital tools have value, they should not replace all of the traditional laboratory activities. Clearly, both computer-enhanced activities and traditional labs must be included in laboratory exercises. Reliance on only one or the other is inappropriate. In order to determine when it is appropriate to use a particular educational tool, the goals of the course and the needs of biology students for an education that gives them a realistic and engaged view of biology must be understood. In this paper, I dispel some of the myths of computer tools and give specific guidelines for assessing their usage, taking into account the special needs of a developmental biology class and the difficulties of observing all the developmental stages of subject organisms in the timescale of class meetings. PMID:12705675

  14. LCOGT Imaging Lab

    NASA Astrophysics Data System (ADS)

    Tufts, Joseph R.; Lobdill, Rich; Haldeman, Benjamin J.; Haynes, Rachel; Hawkins, Eric; Burleson, Ben; Jahng, David

    2008-07-01

    The Las Cumbres Observatory Global Telescope Network (LCOGT) is an ambitious project to build and operate, within 5 years, a worldwide robotic network of 50 0.4, 1, and 2 m telescopes sharing identical instrumentation and optimized for precision photometry of time-varying sources. The telescopes, instrumentation, and software are all developed in house with two 2 m telescopes already installed. The LCOGT Imaging Lab is responsible for assembly and characterization of the network's cameras and instrumentation. In addition to a fully equipped CNC machine shop, two electronics labs, and a future optics lab, the Imaging Lab is designed from the ground up to be a superb environment for bare detectors, precision filters, and assembled instruments. At the heart of the lab is an ISO class 5 cleanroom with full ionization. Surrounding this, the class 7 main lab houses equipment for detector characterization including QE and CTE, and equipment for measuring transmission and reflection of optics. Although the first science cameras installed, two TEC cooled e2v 42-40 deep depletion based units and two CryoTiger cooled Fairchild Imaging CCD486-BI based units, are from outside manufacturers, their 18 position filter wheels and the remainder of the network's science cameras, controllers, and instrumentation will be built in house. Currently being designed, the first generation LCOGT cameras for the network's 1 m telescopes use existing CCD486-BI devices and an in-house controller. Additionally, the controller uses digital signal processing to optimize readout noise vs. speed, and all instrumentation uses embedded microprocessors for communication over ethernet.

  15. SenseLab

    PubMed Central

    Crasto, Chiquito J.; Marenco, Luis N.; Liu, Nian; Morse, Thomas M.; Cheung, Kei-Hoi; Lai, Peter C.; Bahl, Gautam; Masiar, Peter; Lam, Hugo Y.K.; Lim, Ernest; Chen, Huajin; Nadkarni, Prakash; Migliore, Michele; Miller, Perry L.; Shepherd, Gordon M.

    2009-01-01

    This article presents the latest developments in neuroscience information dissemination through the SenseLab suite of databases: NeuronDB, CellPropDB, ORDB, OdorDB, OdorMapDB, ModelDB and BrainPharm. These databases include information related to: (i) neuronal membrane properties and neuronal models, and (ii) genetics, genomics, proteomics and imaging studies of the olfactory system. We describe here: the new features for each database, the evolution of SenseLab’s unifying database architecture and instances of SenseLab database interoperation with other neuroscience online resources. PMID:17510162

  16. The NOAO Data Lab

    NASA Astrophysics Data System (ADS)

    Fitzpatrick, M.; Olsen, K.; Stobie, E. B.; Mighell, K. J.; Norris, P.

    2015-09-01

    We describe the NOAO Data Lab to help community users take advantage of current large surveys and prepare them even larger surveys in the era of LSST. The Data Lab will allow users to efficiently utilize catalogs of billions of objects, combine traditional telescope image and spectral data with external archives, share custom results with collaborators, publish data products to other users, and experiment with analysis toolkits. Specific science cases will be used to develop a prototype framework and tools, allowing us to work directly with scientists from survey teams to ensure development remains focused on scientifically productive tasks.

  17. Serial Dilution Simulation Lab

    ERIC Educational Resources Information Center

    Keler, Cynthia; Balutis, Tabitha; Bergen, Kim; Laudenslager, Bryanna; Rubino, Deanna

    2010-01-01

    Serial dilution is often a difficult concept for students to understand. In this short dry lab exercise, students perform serial dilutions using seed beads. This exercise helps students gain skill at performing dilutions without using reagents, bacterial cultures, or viral cultures, while being able to visualize the process.

  18. Lab with Dad

    ERIC Educational Resources Information Center

    Havers, Brenda; Delmotte, Karen

    2012-01-01

    Family science nights are fantastic, but planning one can be overwhelming, especially when one considers the already overloaded schedule of a classroom teacher. To overcome this challenge, the authors--colleagues with a mutual love of science--developed a much simpler annual event called "Lab With Dad." The purpose was for one target age group of…

  19. Elemental Chem Lab

    ERIC Educational Resources Information Center

    Franco Mariscal, Antonio Joaquin

    2008-01-01

    This educative material uses the symbols of 45 elements to spell the names of 32 types of laboratory equipment usually found in chemical labs. This teaching material has been divided into three puzzles according to the type of the laboratory equipment: (i) glassware as reaction vessels or containers; (ii) glassware for measuring, addition or…

  20. A Big Bang Lab

    ERIC Educational Resources Information Center

    Scheider, Walter

    2005-01-01

    The February 2005 issue of The Science Teacher (TST) reminded everyone that by learning how scientists study stars, students gain an understanding of how science measures things that can not be set up in lab, either because they are too big, too far away, or happened in a very distant past. The authors of "How Far are the Stars?" show how the…

  1. Inside Linden Lab

    ERIC Educational Resources Information Center

    Atkinson, Tom

    2008-01-01

    In this article, the author provides an overview of Second Life[trademark], or simply SL, which was developed at Linden Lab, a San Francisco-based corporation. SL is an online society within a threee-dimensional virtual world entirely built and owned by its residents, where they can explore, build, socialize and participate in their own economy.…

  2. The Crime Lab Project.

    ERIC Educational Resources Information Center

    Hein, Annamae J.

    2003-01-01

    Describes the Crime Lab Project, which takes an economical, hands-on, interdisciplinary approach to studying the career of forensics in the middle or high school classroom. Includes step-by-step student requirements for the investigative procedure, a sample evidence request form, and an assessment rubric. (KHR)

  3. Writing Better Lab Reports

    ERIC Educational Resources Information Center

    Porter, Rhiannon; Guarienti, Kristy; Brydon, Barbara; Robb, Jeanine; Royston, Ann; Painter, Heidi; Sutherland, Alex; Passmore, Cynthia; Smith, Martin H.

    2010-01-01

    As science teachers at a suburban California high school, the authors were concerned about the lab report conclusions written by their upper-level chemistry, biology, and ecology students--which were consistently of poor quality. Their work lacked inferences derived from data and support for their concluding statements. Working as part of a…

  4. Labs That Are a Blast.

    ERIC Educational Resources Information Center

    Hendrix, Laura

    1996-01-01

    Presents activities that use a simple homemade apparatus called "the cannon" to demonstrate Newton's Third Law. Reviews the chemistry concepts behind the ignition of the cannon and presents the Momentum Lab and the Projectile Motion Lab. (JRH)

  5. e-Learning - Physics Labs

    NASA Astrophysics Data System (ADS)

    Mohottala, Hashini

    2014-03-01

    The general student population enrolled in any college level class is highly diverse. An increasing number of ``nontraditional'' students return to college and most of these students follow distance learning degree programs while engaging in their other commitments, work and family. However, those students tend to avoid taking science courses with labs, mostly because of the incapability of remotely completing the lab components in such courses. In order to address this issue, we have come across a method where introductory level physics labs can be taught remotely. In this process a lab kit with the critical lab components that can be easily accessible are conveniently packed into a box and distributed among students at the beginning of the semester. Once the students are given the apparatus they perform the experiments at home and gather data All communications with reference to the lab was done through an interactive user-friendly webpage - Wikispaces (WikiS). Students who create pages on WikiS can submit their lab write-ups, embed videos of the experiments they perform, post pictures and direct questions to the lab instructor. The students who are enrolled in the same lab can interact with each other through WikiS to discuss labs and even get assistance.

  6. Introducing ADS Labs

    NASA Astrophysics Data System (ADS)

    Accomazzi, Alberto; Henneken, E.; Grant, C. S.; Kurtz, M. J.; Di Milia, G.; Luker, J.; Thompson, D. M.; Bohlen, E.; Murray, S. S.

    2011-05-01

    ADS Labs is a platform that ADS is introducing in order to test and receive feedback from the community on new technologies and prototype services. Currently, ADS Labs features a new interface for abstract searches, faceted filtering of results, visualization of co-authorship networks, article-level recommendations, and a full-text search service. The streamlined abstract search interface provides a simple, one-box search with options for ranking results based on a paper relevancy, freshness, number of citations, and downloads. In addition, it provides advanced rankings based on collaborative filtering techniques. The faceted filtering interface allows users to narrow search results based on a particular property or set of properties ("facets"), allowing users to manage large lists and explore the relationship between them. For any set or sub-set of records, the co-authorship network can be visualized in an interactive way, offering a view of the distribution of contributors and their inter-relationships. This provides an immediate way to detect groups and collaborations involved in a particular research field. For a majority of papers in Astronomy, our new interface will provide a list of related articles of potential interest. The recommendations are based on a number of factors, including text similarity, citations, and co-readership information. The new full-text search interface allows users to find all instances of particular words or phrases in the body of the articles in our full-text archive. This includes all of the scanned literature in ADS as well as a select portion of the current astronomical literature, including ApJ, ApJS, AJ, MNRAS, PASP, A&A, and soon additional content from Springer journals. Fulltext search results include a list of the matching papers as well as a list of "snippets" of text highlighting the context in which the search terms were found. ADS Labs is available at http://adslabs.org

  7. Inexpensive DAQ based physics labs

    NASA Astrophysics Data System (ADS)

    Lewis, Benjamin; Clark, Shane

    2015-11-01

    Quality Data Acquisition (DAQ) based physics labs can be designed using microcontrollers and very low cost sensors with minimal lab equipment. A prototype device with several sensors and documentation for a number of DAQ-based labs is showcased. The device connects to a computer through Bluetooth and uses a simple interface to control the DAQ and display real time graphs, storing the data in .txt and .xls formats. A full device including a larger number of sensors combined with software interface and detailed documentation would provide a high quality physics lab education for minimal cost, for instance in high schools lacking lab equipment or students taking online classes. An entire semester’s lab course could be conducted using a single device with a manufacturing cost of under $20.

  8. Phoenix's Wet Chemistry Lab

    NASA Technical Reports Server (NTRS)

    2008-01-01

    This is an illustration of the analytical procedure of NASA's Phoenix Mars Lander's Wet Chemistry Lab (WCL) on board the Microscopy, Electrochemistry, and Conductivity Analyzer (MECA) instrument. By dissolving small amounts of soil in water, WCL can determine the pH, the abundance of minerals such as magnesium and sodium cations or chloride, bromide and sulfate anions, as well as the conductivity and redox potential.

    The Phoenix Mission is led by the University of Arizona, Tucson, on behalf of NASA. Project management of the mission is by NASA's Jet Propulsion Laboratory, Pasadena, Calif. Spacecraft development is by Lockheed Martin Space Systems, Denver.

  9. Phoenix's Wet Chemistry Lab

    NASA Technical Reports Server (NTRS)

    2008-01-01

    This is an illustration of soil analysis on NASA's Phoenix Mars Lander's Wet Chemistry Lab (WCL) on board the Microscopy, Electrochemistry, and Conductivity Analyzer (MECA) instrument. By dissolving small amounts of soil in water, WCL will attempt to determine the pH, the abundance of minerals such as magnesium and sodium cations or chloride, bromide and sulfate anions, as well as the conductivity and redox potential.

    The Phoenix Mission is led by the University of Arizona, Tucson, on behalf of NASA. Project management of the mission is by NASA's Jet Propulsion Laboratory, Pasadena, Calif. Spacecraft development is by Lockheed Martin Space Systems, Denver.

  10. Lab at Home: Hardware Kits for a Digital Design Lab

    ERIC Educational Resources Information Center

    Oliver, J. P.; Haim, F.

    2009-01-01

    An innovative laboratory methodology for an introductory digital design course is presented. Instead of having traditional lab experiences, where students have to come to school classrooms, a "lab at home" concept is proposed. Students perform real experiments in their own homes, using hardware kits specially developed for this purpose. They…

  11. Physics Labs with Flavor II

    ERIC Educational Resources Information Center

    Agrest, Mikhail M.

    2011-01-01

    This paper was inspired by the numerous requests from "TPT" readers to expand the number of examples of "recurrent study" lab exercises described in my previous paper "Physics Labs with Flavor." I recommend that readers examine it first in order to better understand this one as my attempt here is to be brief. In that paper, one can find details…

  12. Business Lab Curriculum. Final Report.

    ERIC Educational Resources Information Center

    Dill, Cheri; Weitman, Karlene

    Curriculum materials are provided for courses to be taught in business labs, including typing I, advanced and production typing, office procedures (clerical and secretarial), recordkeeping, accounting I and II, consumer math, and business law. Introductory materials include suggestions for setting up labs and a listing of required and suggested…

  13. TQM in a Computer Lab.

    ERIC Educational Resources Information Center

    Swanson, Dewey A.; Phillips, Julie A.

    At the Purdue University School of Technology (PST) at Columbus, Indiana, the Total Quality Management (TQM) philosophy was used in the computer laboratories to better meet student needs. A customer satisfaction survey was conducted to gather data on lab facilities, lab assistants, and hardware/software; other sections of the survey included…

  14. Methamphetamine Lab Incidents, 2004-2014

    MedlinePlus

    ... Liderazgo de la DEA Resource Center » Statistics & Facts » Methamphetamine Lab Incidents Methamphetamine Lab Incidents, 2004-2014 NOTE: These maps include all meth incidents, including labs, "dumpsites" or "chemical and glassware" ...

  15. Neutron Transversity at Jefferson Lab

    SciTech Connect

    Jian-Ping Chen; Xiaodong Jiang; Jen-chieh Peng; Lingyan Zhu

    2005-09-07

    Nucleon transversity and single transverse spin asymmetries have been the recent focus of large efforts by both theorists and experimentalists. On-going and planned experiments from HERMES, COMPASS and RHIC are mostly on the proton or the deuteron. Presented here is a planned measurement of the neutron transversity and single target spin asymmetries at Jefferson Lab in Hall A using a transversely polarized {sup 3}He target. Also presented are the results and plans of other neutron transverse spin experiments at Jefferson Lab. Finally, the factorization for semi-inclusive DIS studies at Jefferson Lab is discussed.

  16. What's your lab's strategy?

    PubMed

    Francis, Peter

    2016-07-01

    Important strategic choices cascade throughout a laboratory. Senior management should create a document that answers each of the five key questions explained on page 60. Once this has been detailed in writing, it remains important to disseminate the basics to all employees so they are singing the same tune. A useful way to accomplish this is through a coherent strategy statement that specifies three components: 1) objectives; 2) scope; and 3) advantages. Commercial and hospital outreach labs should be in business to win. It all starts with a definition of what winning looks like. To "participate" in your market contributes to mediocrity-and it's self-defeating. With no clear strategic direction of where-to-play and how-to-win choices that associate with the aspiration, a mission or vision statement can be frustrating rather than inspiring for employees. Articulate it plainly and concisely for everybody. With a care-fully prepared and designed strategy, you will be on your way to winning in the zero-sum game! PMID:27548928

  17. Generalized Nanosatellite Avionics Testbed Lab

    NASA Technical Reports Server (NTRS)

    Frost, Chad R.; Sorgenfrei, Matthew C.; Nehrenz, Matt

    2015-01-01

    The Generalized Nanosatellite Avionics Testbed (G-NAT) lab at NASA Ames Research Center provides a flexible, easily accessible platform for developing hardware and software for advanced small spacecraft. A collaboration between the Mission Design Division and the Intelligent Systems Division, the objective of the lab is to provide testing data and general test protocols for advanced sensors, actuators, and processors for CubeSat-class spacecraft. By developing test schemes for advanced components outside of the standard mission lifecycle, the lab is able to help reduce the risk carried by advanced nanosatellite or CubeSat missions. Such missions are often allocated very little time for testing, and too often the test facilities must be custom-built for the needs of the mission at hand. The G-NAT lab helps to eliminate these problems by providing an existing suite of testbeds that combines easily accessible, commercial-offthe- shelf (COTS) processors with a collection of existing sensors and actuators.

  18. State of the Lab 2012

    SciTech Connect

    King, Alex

    2012-01-01

    Ames Laboratory Director Alex King delivers the annual State of the Lab address on Thursday, May 17, 2012, the 65th Anniversary of the founding of The Ames Laboratory. This video contains highlights from the address.

  19. State of the Lab 2012

    ScienceCinema

    King, Alex

    2013-03-01

    Ames Laboratory Director Alex King delivers the annual State of the Lab address on Thursday, May 17, 2012, the 65th Anniversary of the founding of The Ames Laboratory. This video contains highlights from the address.

  20. GridLAB-D/SG

    Energy Science and Technology Software Center (ESTSC)

    2011-08-30

    GridLAB-D is a new power system simulation tool that provides valuable information to users who design and operate electric power transmission and distribution systems, and to utilities that wish to take advantage of the latest smart grid technology. This special release of GridLAB-D was developed to study the proposed Smart Grid technology that is used by Battelle Memorial Institute in the AEP gridSMART demonstration project in Northeast Columbus, Ohio.

  1. Virtual Labs and Virtual Worlds

    NASA Astrophysics Data System (ADS)

    Boehler, Ted

    2006-12-01

    Virtual Labs and Virtual Worlds Coastline Community College has under development several virtual lab simulations and activities that range from biology, to language labs, to virtual discussion environments. Imagine a virtual world that students enter online, by logging onto their computer from home or anywhere they have web access. Upon entering this world they select a personalized identity represented by a digitized character (avatar) that can freely move about, interact with the environment, and communicate with other characters. In these virtual worlds, buildings, gathering places, conference rooms, labs, science rooms, and a variety of other “real world” elements are evident. When characters move about and encounter other people (players) they may freely communicate. They can examine things, manipulate objects, read signs, watch video clips, hear sounds, and jump to other locations. Goals of critical thinking, social interaction, peer collaboration, group support, and enhanced learning can be achieved in surprising new ways with this innovative approach to peer-to-peer communication in a virtual discussion world. In this presentation, short demos will be given of several online learning environments including a virtual biology lab, a marine science module, a Spanish lab, and a virtual discussion world. Coastline College has been a leader in the development of distance learning and media-based education for nearly 30 years and currently offers courses through PDA, Internet, DVD, CD-ROM, TV, and Videoconferencing technologies. Its distance learning program serves over 20,000 students every year. sponsor Jerry Meisner

  2. Advanced Physics Lab at TCU

    NASA Astrophysics Data System (ADS)

    Quarles, C. A.

    2009-04-01

    The one semester, one credit hour Modern Physics Lab is viewed as a transition between the structured Physics 1 and 2 labs and junior/senior research. The labs focus on a variety of experiments built around a multichannel analyzer, various alpha, beta and gamma ray detectors and weak radioactive sources. Experiments include radiation safety and detection with a Geiger counter and NaI detector, gamma ray spectroscopy with a germanium detector, beta spectrum, alpha energy loss, gamma ray absorption, Compton effect, nuclear and positron annihilation lifetime, speed of gamma rays. Other experiments include using the analog oscilloscope, x-ray diffraction of diamond and using an SEM/EDX. Error analysis is emphasized throughout. The semester ends with an individual project, often an extension of one of the earlier experiments, and students present their results as a paper and an APS style presentation to the department.

  3. State of the Lab Address

    SciTech Connect

    King, Alex

    2010-01-01

    In his third-annual State of the Lab address, Ames Laboratory Director Alex King called the past year one of "quiet but strong progress" and called for Ames Laboratory to continue to build on its strengths while responding to changing expectations for energy research.

  4. The Mobile Math Lab Project.

    ERIC Educational Resources Information Center

    Gray, Elaine

    1991-01-01

    Describes a mobile computer lab set up in a converted bus that is used by fourth graders as part of the math curriculum. The program, which emphasizes problem solving and spatial visualization, also addresses gender differences and in-service teacher training. The physical arrangements, including provisions for computer security, are described.…

  5. Fraud strikes top genome lab

    SciTech Connect

    Marshall, E.

    1996-11-08

    Francis Collins, head of NIH`s Human Genome Project has informed colleagues that a junior researcher in his lab facke data in five papers co-authored by Collins. This article describes the whole scenario, how it was discovered, and what the reprocussions are.

  6. Safety Equipment in the Lab.

    ERIC Educational Resources Information Center

    Denham, Willard A.S.

    1964-01-01

    Findings of two recent surveys on safety equipment in laboratory facilities are presented. The first survey was a pilot study of emergency shower and eye wash equipment. This study was followed by a more comprehensive random survey of safety equipment in 2,820 labs. Among other findings, the surveys indicate that many plants are underequipped, or…

  7. Biodiversity Lab: Using Local Resources.

    ERIC Educational Resources Information Center

    Gillie, Lynn L.

    1997-01-01

    Examining living organisms in one's own backyard is a key first step toward appreciating the scope and importance of biological diversity throughout the world. The goals of this lab are to involve students in exploring the biodiversity around them, appreciating its scope, and asking questions of new organisms that they may never have noticed…

  8. A Simple, Successful Capacitor Lab

    ERIC Educational Resources Information Center

    Ennis, William

    2011-01-01

    Capacitors are a fundamental component of modern electronics. They appear in myriad devices and in an enormous range of sizes. Although our students are taught the function and analysis of capacitors, few have the opportunity to use them in our labs.

  9. State of the Lab Address

    ScienceCinema

    King, Alex

    2013-03-01

    In his third-annual State of the Lab address, Ames Laboratory Director Alex King called the past year one of "quiet but strong progress" and called for Ames Laboratory to continue to build on its strengths while responding to changing expectations for energy research.

  10. A Lab for All Reasons.

    ERIC Educational Resources Information Center

    Cronin-Jones, Linda L.

    1990-01-01

    Described is a demonstration science laboratory at the University of Florida. Discussed is laboratory design, including instructional space, lab stations, sink areas, safety areas, and a storage and distribution area. The impact of this type of design is cited. Diagrams and photographs are included. (CW)

  11. Where Lab Tests Are Performed

    MedlinePlus

    ... labs also vary in complexity, the volume of tests performed, the technology utilized, and the number and type of professionals who conduct the testing . There are important differences among the various testing settings. This information will be useful in ... Proudly sponsored by ... Learn ...

  12. Evaluating E-Labs' Experimentation

    ERIC Educational Resources Information Center

    Plaisent, Michel; Maguiraga, Lassana; Bernard, Prosper; Larhrib, Samir

    2004-01-01

    This communication discusses preliminary results on an experimentation of e-Learning with MIS students, mainly in order to cope with the logistics of lab organization. A learning management software was installed which changed completely the learning process, from content to logistics. Students have expressed their satisfaction with the e-Learning…

  13. Flexible HVAC System for Lab or Classroom.

    ERIC Educational Resources Information Center

    Friedan, Jonathan

    2001-01-01

    Discusses an effort to design a heating, ventilation, and air conditioning system flexible enough to accommodate an easy conversion of classrooms to laboratories and dry labs to wet labs. The design's energy efficiency and operations and maintenance are examined. (GR)

  14. The Development of MSFC Usability Lab

    NASA Technical Reports Server (NTRS)

    Cheng, Yiwei; Richardson, Sally

    2010-01-01

    This conference poster reviews the development of the usability lab at Marshall Space Flight Center. The purpose of the lab was to integrate a fully functioning usability laboratory to provide a resource for future human factor assessments. and to implement preliminary usability testing on a MSFC website to validate the functionality of the lab.

  15. Experiences with Lab-Centric Instruction

    ERIC Educational Resources Information Center

    Titterton, Nathaniel; Lewis, Colleen M.; Clancy, Michael J.

    2010-01-01

    Lab-centric instruction emphasizes supervised, hands-on activities by substituting lab for lecture time. It combines a multitude of pedagogical techniques into the format of an extended, structured closed lab. We discuss the range of benefits for students, including increased staff interaction, frequent and varied self-assessments, integrated…

  16. LabNet Project plan

    SciTech Connect

    Pavel, G.

    1985-06-24

    LabNet value-added service is a high-speed packet-switched network that ties computers together. From the point-of-view of a single computer, or of a local network of computers within a building or a group of buildings, the LabNet high-speed network is a long-haul network (like Tymnet or ARPANET) for getting to other buildings. This service is provided through channels of the backbone that are shared by everyone at the Laboratory. The focus of the high-speed network is the efficient transfer of data between computers as opposed to the interconnection of people's terminals to these computers. The latter function is best served by the local networks, or by a separate network.

  17. New Features in ADS Labs

    NASA Astrophysics Data System (ADS)

    Accomazzi, Alberto; Kurtz, M. J.; Henneken, E. A.; Grant, C. S.; Thompson, D.; Di Milia, G.; Luker, J.; Murray, S. S.

    2013-01-01

    The NASA Astrophysics Data System (ADS) has been working hard on updating its services and interfaces to better support our community's research needs. ADS Labs is a new interface built on the old tried-and-true ADS Abstract Databases, so all of ADS's content is available through it. In this presentation we highlight the new features that have been developed in ADS Labs over the last year: new recommendations, metrics, a citation tool and enhanced fulltext search. ADS Labs has long been providing article-level recommendations based on keyword similarity, co-readership and co-citation analysis of its corpus. We have now introduced personal recommendations, which provide a list of articles to be considered based on a individual user's readership history. A new metrics interface provides a summary of the basic impact indicators for a list of records. These include the total and normalized number of papers, citations, reads, and downloads. Also included are some of the popular indices such as the h, g and i10 index. The citation helper tool allows one to submit a set of records and obtain a list of top 10 papers which cite and/or are cited by papers in the original list (but which are not in it). The process closely resembles the network approach of establishing "friends of friends" via an analysis of the citation network. The full-text search service now covers more than 2.5 million documents, including all the major astronomy journals, as well as physics journals published by Springer, Elsevier, the American Physical Society, the American Geophysical Union, and all of the arXiv eprints. The full-text search interface interface allows users and librarians to dig deep and find words or phrases in the body of the indexed articles. ADS Labs is available at http://adslabs.org

  18. External-injection Experiment at SPARC_LAB

    NASA Astrophysics Data System (ADS)

    Rossi, A. R.; Bacci, A.; Belleveglia, M.; Chiadroni, E.; Cianchi, A.; Di Pirro, G.; Ferrario, M.; Gallo, A.; Gatti, G.; Maroli, C.; Mostacci, A.; Petrillo, V.; Serafini, L.; Tomassini, P.; Vaccarezza, C.

    At the SPARC_LAB facility of INFN-LNF we are installing two transport lines for ultra-short electron bunches and an ultra- intense laser pulses, generated by the SPARC photo-injector and by the FLAME laser in a synchronized fashion at the tens of f s level, to co-propagate inside a hydrogen filled glass capillary, in order to perform acceleration of the electron bunch by a plasma wave driven by the laser pulse. The main aim of this experiment is to demonstrate that a high brightness electron beam can be accelerated by a plasma wave without any significant degradation of its quality. Motivations of the technical choices made and expected performances are reported.

  19. Updated version of an interim connection space LabPQR for spectral color reproduction: LabLab.

    PubMed

    Cao, Qian; Wan, Xiaoxia; Li, Junfeng; Liang, Jingxing

    2016-09-01

    In this paper, we propose a new interim connection space (ICS) called LabLab, which is an updated version of LabPQR, to overcome the drawback that the last three dimensions of LabPQR have no definite colorimetric meanings. We extended and improved the method by which the first three dimensions of LabPQR are deduced to obtain an ICS consisting of two sets of CIELAB values under different illuminants, and the reconstructed spectra from LabLab were obtained by minimizing colorimetric errors by means of the computational formula of the CIE-XYZ tristimulus values combined with least-squares best fit. The improvement obtained from the proposed method was tested to compress and reconstruct the reflectance spectra of the 1950 Natural Color System color chips and more than 50,000 ISO SOCS color patches as well as six multispectral images acquired by multispectral image acquisition systems using 1600 glossy Munsell color chips as training samples. The performance was evaluated by the mean values of color differences between the original and reconstructed spectra under the CIE 1931 standard colorimetric observer and the CIE standard illuminants D50, D55, D65, D75, F2, F7, F11, and A as well as five multichip white LED light sources. The mean and maximum values of the root mean square errors between the original and reconstructed spectra were also calculated. The experimental results show that the proposed three LabLab interim connection spaces significantly outperform principal component analysis, LabPQR, XYZLMS, Fairman-Brill, and LabRGB in colorimetric reconstruction accuracy at the cost of slight reduction of spectral reconstruction accuracy and illuminant independence of color differences of the suggested LabLab interim connection spaces outperform other interim connection spaces. In addition, the presented LabLab interim connection spaces could be quite compatible with the extensively used colorimetric management system since each dimension has definite colorimetric

  20. NCL Objective #5 - Nanotechnology Characterization Lab (NCL)

    Cancer.gov

    Nanotechnology Characterization Lab (NCL) Objective #5: Engage and Facilitate Academic and Industrial-based Knowledge Sharing of Nanomaterial Performance Data and Behavior Resulting from Pre-Clinical Testing.

  1. MatLab Script and Functional Programming

    NASA Technical Reports Server (NTRS)

    Shaykhian, Gholam Ali

    2007-01-01

    MatLab Script and Functional Programming: MatLab is one of the most widely used very high level programming languages for scientific and engineering computations. It is very user-friendly and needs practically no formal programming knowledge. Presented here are MatLab programming aspects and not just the MatLab commands for scientists and engineers who do not have formal programming training and also have no significant time to spare for learning programming to solve their real world problems. Specifically provided are programs for visualization. The MatLab seminar covers the functional and script programming aspect of MatLab language. Specific expectations are: a) Recognize MatLab commands, script and function. b) Create, and run a MatLab function. c) Read, recognize, and describe MatLab syntax. d) Recognize decisions, loops and matrix operators. e) Evaluate scope among multiple files, and multiple functions within a file. f) Declare, define and use scalar variables, vectors and matrices.

  2. Jefferson Lab, a status report

    SciTech Connect

    Dunham, B.M.

    1996-10-01

    Thomas Jefferson National Accelerator Facility (Jefferson Lab; formerly known as CEBAF), operates a 4 GeV, 200 {micro}A continuous wave (CW) electron accelerator that re-circulates the beam five times through two superconducting 400 MeV linacs. Electrons can be extracted from any of the five recirculation passes and beam can be simultaneously delivered to the three experimental halls. As the commissioning stage nears completion, the accelerator is becoming a fully operational machine. Experiments in Hall C have been underway since November 1995 with beam powers of over 300 kW at various energies. Hall A has received beam for spectrometer commissioning, while Hall B is expected to receive its first beam in the fall of 1996. Accelerator availability of greater than 70% during physics runs and excellent beam quality have contributed to making Jefferson Lab a world class laboratory for accelerator-based electromagnetic nuclear physics. With the high performance of the superconducting RF cavities, machine upgrades to 6 GeV, and eventually 8 to 10 GeV are now in the planning stages. Operational and commissioning details concerning all aspects of the machine will be discussed.

  3. Aerosciences at Sandia National Labs.

    SciTech Connect

    Payne, Jeffrey L.

    2010-10-01

    A brief overview of Sandia National Laboratories will be presented highlighting the mission of Engineering Science Center. The Engineering Science Center provides a wide range of capabilities to support the lab's missions. As part of the Engineering Science Center the Aeroscience department provides research, development and application expertise in both experimental and computation compressible fluid mechanics. The role of Aeroscience at Sandia National Labs will be discussed with a focus on current research and development activities within the Aeroscience Department. These activities will be presented within the framework of a current program to highlight the synergy between computational and experimental work. The research effort includes computational and experimental activities covering fluid and structural dynamics disciplines. The presentation will touch on: probable excitation sources that yield the level of random vibration observed during flight; the methods that have been developed to model the random pressure fields in the turbulent boundary layer using a combination of CFD codes and a model of turbulent boundary layer pressure fluctuations; experimental measurement of boundary layer fluctuations; the methods of translating the random pressure fields to time-domain spatially correlated pressure fields.

  4. LabWrite: Transforming Lab Reports from Busy Work to Meaningful Learning Opportunities

    ERIC Educational Resources Information Center

    Ferzli, Miriam; Carter, Michael; Wiebe, Eric

    2005-01-01

    Lab reports are the dreaded assignments of the laboratory course. Students dislike them, because they can be tedious and time-consuming. Instructors dislike them, because they significantly increase the grading load. For this reason, lab reports are often omitted or replaced by alternatives such as responses to lab questions, fill-in-the-blank lab…

  5. Operational experience on the generation and control of high brightness electron bunch trains at SPARC-LAB

    NASA Astrophysics Data System (ADS)

    Mostacci, A.; Alesini, D.; Anania, M. P.; Bacci, A.; Bellaveglia, M.; Biagioni, A.; Cardelli, F.; Castellano, Michele; Chiadroni, Enrica; Cianchi, Alessandro; Croia, M.; Di Giovenale, Domenico; Di Pirro, Giampiero; Ferrario, Massimo; Filippi, Francesco; Gallo, Alessandro; Gatti, Giancarlo; Giribono, Anna; Innocenti, L.; Marocchino, A.; Petrarca, M.; Piersanti, L.; Pioli, S.; Pompili, Riccardo; Romeo, Stefano; Rossi, Andrea Renato; Shpakov, V.; Scifo, J.; Vaccarezza, Cristina; Villa, Fabio; Weiwei, L.

    2015-05-01

    Sub-picosecond, high-brightness electron bunch trains are routinely produced at SPARC-LAB via the velocity bunching technique. Such bunch trains can be used to drive multi-color Free Electron Lasers (FELs) and plasma wake field accelerators. In this paper we present recent results at SPARC-LAB on the generation of such beams, highlighting the key points of our scheme. We will discuss also the on-going machine upgrades to allow driving FELs with plasma accelerated beams or with short electron pulses at an increased energy.

  6. A Comparative Study on Real Lab and Simulation Lab in Communication Engineering from Students' Perspectives

    ERIC Educational Resources Information Center

    Balakrishnan, B.; Woods, P. C.

    2013-01-01

    Over the years, rapid development in computer technology has engendered simulation-based laboratory (lab) in addition to the traditional hands-on (physical) lab. Many higher education institutions adopt simulation lab, replacing some existing physical lab experiments. The creation of new systems for conducting engineering lab activities has raised…

  7. Portable AI Lab for Teaching Artificial Intelligence.

    ERIC Educational Resources Information Center

    Rosner, Michael; Baj, Fabio.

    1993-01-01

    Describes the Portable AI Lab, a computing environment containing artificial intelligence (AI) tools, examples, and documentation for use with university AI courses. Two modules of the lab are highlighted: the automated theorem proving module and the natural language processing module, which includes augmented transition networks. (23 references)…

  8. Extracurricular Science Labs for STEM Talent Support

    ERIC Educational Resources Information Center

    Hausamann, Dieter

    2012-01-01

    In the past decade, a growing lack of engineers, natural scientists, information technology experts, and mathematicians has been noted, especially in Europe. Corresponding to the need to attract young people to science and technology, numerous extracurricular science labs ("out-of-school labs") have been established, especially in Germany. One of…

  9. Traditional Labs + New Questions = Improved Student Performance.

    ERIC Educational Resources Information Center

    Rezba, Richard J.; And Others

    1992-01-01

    Presents three typical lab activities involving the breathing rate of fish, the behavior of electromagnets, and tests for water hardness to demonstrate how labs can be modified to teach process skills. Discusses how basic concepts about experimentation are developed and ways of generating and improving science experiments. Includes a laboratory…

  10. California State University, Northridge: Hybrid Lab Courses

    ERIC Educational Resources Information Center

    EDUCAUSE, 2014

    2014-01-01

    California State University, Northridge's Hybrid Lab course model targets high failure rate, multisection, gateway courses in which prerequisite knowledge is a key to success. The Hybrid Lab course model components incorporate interventions and practices that have proven successful at CSUN and other campuses in supporting students, particularly…

  11. Practical Physics Labs: A Resource Manual.

    ERIC Educational Resources Information Center

    Goodwin, Peter

    This resource manual focuses on physics labs that relate to the world around us and utilize simple equipment and situations. Forty-five laboratories are included that relate to thermodynamics, electricity, magnetism, dynamics, optics, wave transmission, centripetal force, and atomic physics. Each lab has three sections. The first section…

  12. The DVCS program at Jefferson Lab

    SciTech Connect

    Niccolai, Silvia

    2014-06-01

    Recent promising results, obtained at Jefferson Lab, on cross sections and asymmetries for DVCS and their link to the Generalized Parton Distributions are the focus of this paper. The extensive experimental program to measure DVCS with the 12-GeV-upgraded CEBAF in three experimental Halls (A, B, C) of Jefferson Lab, will also be presented.

  13. Science Action Labs Part 1: Sciencing.

    ERIC Educational Resources Information Center

    Shevick, Ed; Adams, Linda, Ed.

    This book contains innovative hands-on science laboratory activities that teach basic scientific method skills and are designed to be used directly with 4th- through 9th-grade students. The background materials and instructions included in each activity are written for students to work together in teams. Lab titles are: observation lab,…

  14. Innovation - A view from the Lab

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The USDA Ag Lab in Peoria helps bridge the gap between agricultural producers and commercial manufacturers. In 2015, the Ag Lab, officially known as the Agricultural Research Service (ARS) National Center for Agricultural Utilization Research (NCAUR), is celebrating 75 years of research in Peoria. T...

  15. Uses of Labs and Learning Spaces

    ERIC Educational Resources Information Center

    van den Blink, Clare

    2009-01-01

    How can an IT department transform traditional computer labs given the resource limits of a university setting? Before engaging a redesign team, conduct some groundwork and initial research to help guide design and resource decisions. When the author and her colleagues considered modifying the lab spaces at Cornell, they initially engaged in…

  16. Hydrogel Beads: The New Slime Lab?

    ERIC Educational Resources Information Center

    Brockway, Debra; Libera, Matthew; Welner, Heidi

    2011-01-01

    Creating slime fascinates students. Unfortunately, though intrigue is at its peak, the educational aspect of this activity is often minimal. This article describes a chemistry lab that closely relates to the slime lab and allows high school students to explore the concepts of chemical bonding, properties, and replacement reactions. It involves the…

  17. A Virtual Lab in Research Methods

    ERIC Educational Resources Information Center

    Sommer, Barbara A.; Sommer, Robert

    2003-01-01

    A hands-on lab for a lower division research methods course used an online format with Web page, Web forms, an e-mail listproc, and chat room. The virtual section received a higher rating for overall value than did the in-person labs. Students liked its convenience and flexibility. There were no significant differences in examination performance…

  18. Supercharging Lessons with a Virtual Lab

    ERIC Educational Resources Information Center

    Stewart, Jefferson; Vincent, Daniel

    2013-01-01

    The authors describes their experiences incorporating the virtual lab into a simple circuit lesson during an energy unit in a sixth-grade class. The lesson included a hands-on group experiment using wire, batteries, and light bulbs to make a circuit and an online simulation, using a virtual lab. Class discussions, student inquiries, and the study…

  19. Latest results from FROST at Jefferson Lab

    SciTech Connect

    Ritchie, Barry G.

    2014-06-01

    The spectrum of broad and overlapping nucleon excitations can be greatly clarified by use of a polarized photon beam incident on a polarized target in meson photoproduction experiments. At Jefferson Lab, a program of such measurements has made use of the Jefferson Lab FROzen Spin Target (FROST). An overview of preliminary results are presented.

  20. LANGUAGE LABS--AN UPDATED REPORT.

    ERIC Educational Resources Information Center

    1963

    REPORTS FROM SEVERAL SCHOOL DISTRICTS ON THE USE OF AND PLANNING OF LANGUAGE LABORATORIES ARE PRESENTED. LABORATORIES SHOULD BE ARRANGED FOR FLEXIBLE USE. THE AVERAGE HIGH SCHOOL STUDENT CAN USE A LAB PROFITABLY FOR 20 TO 25 MINUTES. THERE ARE THREE DIFFERENT TYPES OF LANGUAGE LABORATORIES THAT ARE DESCRIBED. THE SATELLITE LAB IS DIVIDED BY A…

  1. Berkeley Lab 2nd Grader Outreach

    SciTech Connect

    Scoggins, Jackie; Louie, Virginia

    2012-01-01

    The Berkeley Lab IT Department sponsored a community outreach program aimed at teaching young children about computers and networks. Second graders from LeConte Elementary School joined Lab IT Staff for a day of in-depth exercises and fun.

  2. Learning Resource Lab: Academic Coaching for Freshmen.

    ERIC Educational Resources Information Center

    Pierson, Gregory N.

    1996-01-01

    To assist incoming freshmen, a Colorado Springs high school initiated learning resource labs staffed with academic coaches. Combining study hall, homeroom, and advisory group, the labs offer adult tutors, workshops on conflict resolution and study skills, career and technology exploration opportunities, a learning styles inventory, free reading…

  3. Berkeley Lab 2nd Grader Outreach

    ScienceCinema

    Scoggins, Jackie; Louie, Virginia

    2013-05-29

    The Berkeley Lab IT Department sponsored a community outreach program aimed at teaching young children about computers and networks. Second graders from LeConte Elementary School joined Lab IT Staff for a day of in-depth exercises and fun.

  4. SLAC All Access: Laser Labs

    ScienceCinema

    Minitti, Mike; Woods Mike

    2014-06-03

    From supermarket checkouts to video game consoles, lasers are ubiquitous in our lives. Here at SLAC, high-power lasers are critical to the cutting-edge research conducted at the laboratory. But, despite what you might imagine, SLAC's research lasers bear little resemblance to the blasters and phasers of science fiction. In this edition of All Access we put on our safety goggles for a peek at what goes on inside some of SLAC's many laser labs. LCLS staff scientist Mike Minitti and SLAC laser safety officer Mike Woods detail how these lasers are used to study the behavior of subatomic particles, broaden our understanding of cosmic rays and even unlock the mysteries of photosynthesis.

  5. Jefferson Lab: Present and Future

    NASA Astrophysics Data System (ADS)

    Rossi, Patrizia

    2016-04-01

    The continuous electron beam accelerator facility and associated experimental equipment at Jefferson Lab comprise a unique facility for nuclear physics research whose upgrade is presently underway, with completion expected in 2017. The upgraded facility will accelerate electron beams to 11 GeV for experiments in the existing Halls A, B and C. In addition, a 12 GeV beam can be provided to a new experimental hall, Hall D, to generate a 9 GeV tagged photon beam. This upgrade will enable a new experimental program with substantial discovery potential to address important topics in hadronic, nuclear, and electroweak physics. Further in the future, it is envisioned that the Laboratory will evolve into an electron-ion colliding beam facility.

  6. Jefferson Lab: Present and Future

    NASA Astrophysics Data System (ADS)

    Rossi, Patrizia

    2016-08-01

    The continuous electron beam accelerator facility and associated experimental equipment at Jefferson Lab comprise a unique facility for nuclear physics research whose upgrade is presently underway, with completion expected in 2017. The upgraded facility will accelerate electron beams to 11 GeV for experiments in the existing Halls A, B and C. In addition, a 12 GeV beam can be provided to a new experimental hall, Hall D, to generate a 9 GeV tagged photon beam. This upgrade will enable a new experimental program with substantial discovery potential to address important topics in hadronic, nuclear, and electroweak physics. Further in the future, it is envisioned that the Laboratory will evolve into an electron-ion colliding beam facility.

  7. SLAC All Access: Laser Labs

    SciTech Connect

    Minitti, Mike; Woods Mike

    2013-03-01

    From supermarket checkouts to video game consoles, lasers are ubiquitous in our lives. Here at SLAC, high-power lasers are critical to the cutting-edge research conducted at the laboratory. But, despite what you might imagine, SLAC's research lasers bear little resemblance to the blasters and phasers of science fiction. In this edition of All Access we put on our safety goggles for a peek at what goes on inside some of SLAC's many laser labs. LCLS staff scientist Mike Minitti and SLAC laser safety officer Mike Woods detail how these lasers are used to study the behavior of subatomic particles, broaden our understanding of cosmic rays and even unlock the mysteries of photosynthesis.

  8. Z Machine at Sandia Labs

    SciTech Connect

    2007-10-17

    Sandia Labs' Z machine is the largest laboratory source of x-rays in the world. For the few nanoseconds of a Z Machine test, its electrical output equals the output of 50x the electrical generating stations of all the power plants on earth. The Z Machine complex encompasses an area roughly the size of a major college basketball arena. Originally created to validate nuclear weapons models, the Z Machine is also considered a "dark horse" in the race for viable fusion energy production. After the famous "arcs and sparks" photo of Z (a photo no longer possible after its refurbishment), this is a fast-motion video of workers completing Z's recent refurbishment.

  9. Jefferson Lab's Trim Card II

    SciTech Connect

    Trent Allison; Sarin Philip; C. Higgins; Edward Martin; William Merz

    2005-05-01

    Jefferson Lab's Continuous Electron Beam Accelerator Facility (CEBAF) uses Trim Card I power supplies to drive approximately 1900 correction magnets. These trim cards have had a long and illustrious service record. However, some of the employed technology is now obsolete, making it difficult to maintain the system and retain adequate spares. The Trim Card II is being developed to act as a transparent replacement for its aging predecessor. A modular approach has been taken in its development to facilitate the substitution of sections for future improvements and maintenance. The resulting design has been divided into a motherboard and 7 daughter cards which has also allowed for parallel development. The Trim Card II utilizes modern technologies such as a Field Programmable Gate Array (FPGA) and a microprocessor to embed trim card controls and diagnostics. These reprogrammable devices also provide the versatility to incorporate future requirements.

  10. Nonproliferation through international lab-to-lab technology cooperation

    SciTech Connect

    Dunlop, W H

    1998-09-10

    Lab-to- Lab activities are currently with the FSU, that experience is leading to important and productive interactions with other countries and regions, most significantly, China and the Middle East. In contrast to the Cold War years, when most technologies developed at LLNL were solely for the US national defense efforts and therefore classified, many of NAI's new technologies and tools are unclassified and designed for use in a multilateral security environment. PPAC is the proliferation "Prevention" element of NAI's four-element "Prevention-Reversal-Response-Avoid Surprise" program. We direct some twenty different projects. which have realized about a factor of ten growth in the last four years.

  11. Measurement system for high-sensitivity LIBS analysis using ICCD camera in LabVIEW environment

    NASA Astrophysics Data System (ADS)

    Zaytsev, S. M.; Popov, A. M.; Zorov, N. B.; Labutin, T. A.

    2014-06-01

    A measurement system based on ultrafast (up to 10 ns time resolution) intensified CCD detector ``Nanogate-2V'' (Nanoscan, Russia) was developed for high-sensitivity analysis by Laser-Induced Breakdown Spectrometry (LIBS). LabVIEW environment provided a high level of compatibility with variety of electronic instruments and an easy development of user interface, while Visual Studio environment was used for creation of LabVIEW compatible dll library with the use of ``Nanogate-2V'' SDK. The program for camera management and laser-induced plasma spectra registration was created with the use of Call Library Node in LabVIEW. An algorithm of integration of the second device ADC ``PCI-9812'' (ADLINK) to the measurement system was proposed and successfully implemented. This allowed simultaneous registration of emission and acoustic signals under laser ablation. The measured resolving power of spectrometer-ICCD system was equal to 12000 at 632 nm. An electron density of laser plasma was estimated with the use of H-α Balmer line. Steel spectra obtained at different delays were used for selection of the optimal conditions for manganese analytical signal registration. The feature of accumulation of spectra from several laser pulses was shown. The accumulation allowed reliable observation of silver signal at 328.07 nm in the LIBS spectra of soil (CAg = 4.5 ppm). Finally, the correlation between acoustic and emission signals of plasma was found. Thus, technical possibilities of the developed LIBS system were demonstrated both for plasma diagnostics and analytical measurements.

  12. Sandia National Lab`s precision laser tracking systems

    SciTech Connect

    Patrick, D.

    1995-04-01

    Sandia Labs` mobile tracking systems have only one moving part. The double gimballed 18 inch diameter beryllium mirror is capable of constant tracking velocities up to 5 rads/sec in both axes, and accelerations to 150 rads/sec/sec in both axes. Orthogonality is <10 microradians. The mirror directs the 488 and 514 nm wavelength CW laser beams to adhesive-backed reflective material applied to the test unit. The mirror catches the return beam and visual image, directing the visual image to three camera bays, and the return beam to an image dissector behind an 80 inch gathering telescope. The image dissector or image position sensor is a photomultiplier with amplifying drift tube and electron aperture and its associated electronics. During the test, the image dissector scan senses the change in position of the reflective material and produces signals to operate the azimuth and elevation torque motors in the gimbal assembly. With the help of 1 1/8 inch diameter azimuth and elevation galvonometer steering mirrors in the optical path, the laser beam is kept on the target at extremely high velocities. To maintain a constant return signal strength, the outgoing beam is run through a microprocessor controlled beam focusing telescope.

  13. Labs21 Environmental Performance Criteria: Toward 'LEED (trademark) for Labs'

    SciTech Connect

    Mathew, Paul; Sartor, Dale; Lintner, William; Wirdzek, Phil

    2002-10-14

    Laboratory facilities present a unique challenge for energy efficient and sustainable design, with their inherent complexity of systems, health and safety requirements, long-term flexibility and adaptability needs, energy use intensity, and environmental impacts. The typical laboratory is about three to five times as energy intensive as a typical office building and costs about three times as much per unit area. In order to help laboratory stakeholders assess the environmental performance of their laboratories, the Labs21 program, sponsored by the US Environmental Protection Agency and the US Department of Energy, is developing the Environmental Performance Criteria (EPC), a point-based rating system that builds on the LEED(TM) rating system. Currently, LEED(TM) is the primary tool used to rate the sustainability of commercial buildings. However, it lacks some attributes essential to encouraging the application of sustainable design principles to laboratory buildings. Accordingly, the EPC has additions and modifications to the prerequisites and credits in each of the six sections of LEED(TM). It is being developed in a consensus-based approach by a diverse group of architects, engineers, consulting experts, health & safety personnel and facilities personnel. This report describes the EPC version 2.0, highlighting the underlying technical issues, and describes implications for the development of a LEED version for Laboratories.

  14. Integrating Robotic Observatories into Astronomy Labs

    NASA Astrophysics Data System (ADS)

    Ruch, Gerald T.

    2015-01-01

    The University of St. Thomas (UST) and a consortium of five local schools is using the UST Robotic Observatory, housing a 17' telescope, to develop labs and image processing tools that allow easy integration of observational labs into existing introductory astronomy curriculum. Our lab design removes the burden of equipment ownership by sharing access to a common resource and removes the burden of data processing by automating processing tasks that are not relevant to the learning objectives.Each laboratory exercise takes place over two lab periods. During period one, students design and submit observation requests via the lab website. Between periods, the telescope automatically acquires the data and our image processing pipeline produces data ready for student analysis. During period two, the students retrieve their data from the website and perform the analysis. The first lab, 'Weighing Jupiter,' was successfully implemented at UST and several of our partner schools. We are currently developing a second lab to measure the age of and distance to a globular cluster.

  15. Experiences with lab-centric instruction

    NASA Astrophysics Data System (ADS)

    Titterton, Nathaniel; Lewis, Colleen M.; Clancy, Michael J.

    2010-06-01

    Lab-centric instruction emphasizes supervised, hands-on activities by substituting lab for lecture time. It combines a multitude of pedagogical techniques into the format of an extended, structured closed lab. We discuss the range of benefits for students, including increased staff interaction, frequent and varied self-assessments, integrated collaborative activities, and a systematic sequence of activities that gradually increases in difficulty. Instructors also benefit from a deeper window into student progress and understanding. We follow with discussion of our experiences in courses at U.C. Berkeley, and using data from some of these investigate the effects of lab-centric instruction on student learning, procrastination, and course pacing. We observe that the lab-centric format helped students on exams but hurt them on extended programming assignments, counter to our hypothesis. Additionally, we see no difference in self-ratings of procrastination and limited differences in ratings of course pace. We do find evidence that the students who choose to attend lab-centric courses are different in several important ways from students who choose to attend the same course in a non-lab-centric format.

  16. Teachers' Perspectives on Online Virtual Labs vs. Hands-On Labs in High School Science

    NASA Astrophysics Data System (ADS)

    Bohr, Teresa M.

    This study of online science teachers' opinions addressed the use of virtual labs in online courses. A growing number of schools use virtual labs that must meet mandated laboratory standards to ensure they provide learning experiences comparable to hands-on labs, which are an integral part of science curricula. The purpose of this qualitative case study was to examine teachers' perceptions of the quality and effectiveness of high school virtual labs. The theoretical foundation was constructivism, as labs provide student-centered activities for problem solving, inquiry, and exploration of phenomena. The research questions focused on experienced teachers' perceptions of the quality of virtual vs. hands-on labs. Data were collected through survey questions derived from the lab objectives of The Next Generation Science Standards . Eighteen teachers rated the degree of importance of each objective and also rated how they felt virtual labs met these objectives; these ratings were reported using descriptive statistics. Responses to open-ended questions were few and served to illustrate the numerical results. Many teachers stated that virtual labs are valuable supplements but could not completely replace hands-on experiences. Studies on the quality and effectiveness of high school virtual labs are limited despite widespread use. Comprehensive studies will ensure that online students have equal access to quality labs. School districts need to define lab requirements, and colleges need to specify the lab experience they require. This study has potential to inspire positive social change by assisting science educators, including those in the local school district, in evaluating and selecting courseware designed to promote higher order thinking skills, real-world problem solving, and development of strong inquiry skills, thereby improving science instruction for all high school students.

  17. Teaching Chemistry Lab Safety through Comics

    NASA Astrophysics Data System (ADS)

    di Raddo, Pasquale

    2006-04-01

    As a means for raising students' interest in aspects pertaining to chemistry lab safety, this article presents a novel approach to teaching this important subject. Comic book lab scenes that involve fictional characters familiar to many students are presented and discussed as to the safety concerns represented in those images. These are discussed in a safety prelab session. For the sake of comparison, students are then shown images taken from current chemistry journals of safety-conscious contemporary chemists at work in their labs. Finally the need to adhere to copyright regulations for the use of the images is discussed so as to increase students' awareness of academic honesty and copyright issues.

  18. Strangeness Production at Jefferson Lab

    SciTech Connect

    Raue, Brian

    2003-11-01

    The Thomas Jefferson National Accelerator Facility has an extensive program of studying the electromagnetic production of strange particles. One of the main components of this program has been the study of both photo- and electropro- duction of K+ + â º0 and K+ + Å 0 final states. Experiments are being, or have been conducted in all three of Jefferson Lab s experimental halls measuring a wide range of observables at kinematics from threshold up to W H 3.0 GeV and Q2 from 0.4 up to 5 (GeV/c)2. The largest effort in this endeavor is taking place in Hall B using the CEBAF Large Acceptance Spectrometer (CLAS). Data have been taken at about ten different polarized electron beam energies and are currently being analyzed. Preliminary results [1] for one beam energy exist wherein the unpolarized cross section has been separated into three components: AT + eLAL, ATT , and ALT . The data indicate a t-channel dominance for the â º0 production and a strong s-channel dominance for Å 0 produc

  19. Lawrence Berkeley Lab Indexing Toolbox

    Energy Science and Technology Software Center (ESTSC)

    2003-09-08

    The Lawrence Berkeley Lab Indexing Toolbox is intended to be used in the context of X-ray crystallography experiments involving biological macromolecules. Macromolecules such as proteins form 3-dimensional periodic arrays (crystal) which in turn lead to lattice-like diffraction patterns when the crystal sample is irradiated with collimated X-rays from a synchrotron or other X-ray source. Once the diffraction pattern is captured on an imaging device the next step is to deduce the periodic nature of themore » crystal sample, along with its internal symmetry. this analysis, known as "indexing" is a well-studied problem. However, there are no other implementations designed to operate in an automated setting, in which the human experimentalist is not prosent to manually verify the results of indexing. In particular LABELIT uses three novel algorithms to facilitate automation: a more robust way to verify the position of the incident X-ray beam on the image, a better way to verify that the deduced lattice is consistent with the observed crystal lattice, and new method to deduce the internal symmetry from measurements of the lattice. Moreover, the algorithms are implemented in a Python framework that permits indexing to fail (in rare cases) without crashing the program, thus allowing the software to be incorporated in robotic systems where unattended operation is expected. It will be especially useful for high throughput operations at snychrotron beamlines.« less

  20. Jefferson Lab's Distributed Data Acquisition

    SciTech Connect

    Trent Allison; Thomas Powers

    2006-05-01

    Jefferson Lab's Continuous Electron Beam Accelerator Facility (CEBAF) occasionally experiences fast intermittent beam instabilities that are difficult to isolate and result in downtime. The Distributed Data Acquisition (Dist DAQ) system is being developed to detect and quickly locate such instabilities. It will consist of multiple Ethernet based data acquisition chassis distributed throughout the seven-eights of a mile CEBAF site. Each chassis will monitor various control system signals that are only available locally and/or monitored by systems with small bandwidths that cannot identify fast transients. The chassis will collect data at rates up to 40 Msps in circular buffers that can be frozen and unrolled after an event trigger. These triggers will be derived from signals such as periodic timers or accelerator faults and be distributed via a custom fiber optic event trigger network. This triggering scheme will allow all the data acquisition chassis to be triggered simultaneously and provide a snapshot of relevant CEBAF control signals. The data will then be automatically analyzed for frequency content and transients to determine if and where instabilities exist.

  1. Labs not in a lab: A case study of instructor and student perceptions of an online biology lab class

    NASA Astrophysics Data System (ADS)

    Doiron, Jessica Boyce

    Distance learning is not a new phenomenon but with the advancement in technology, the different ways of delivering an education have increased. Today, many universities and colleges offer their students the option of taking courses online instead of sitting in a classroom on campus. In general students like online classes because they allow for flexibility, the comfort of sitting at home, and the potential to save money. Even though there are advantages to taking online classes, many students and instructors still debate the effectiveness and quality of education in a distant learning environment. Many universities and colleges are receiving pressure from students to offer more and more classes online. Research argues for both the advantages and disadvantages of online classes and stresses the importance of colleges and universities weighing both sides before deciding to adopt an online class. Certain classes may not be suitable for online instruction and not all instructors are suitable to teach online classes. The literature also reveals that there is a need for more research on online biology lab classes. With the lack of information on online biology labs needed by science educators who face the increasing demand for online biology labs, this case study hopes to provide insight into the use of online biology lab classes and the how students and an instructor at a community college in Virginia perceive their online biology lab experience as well as the effectiveness of the online labs.

  2. Jefferson Lab physics overview: Recent results

    SciTech Connect

    Meziani, Zein-Eddine

    2007-09-01

    I review highlights of the Jefferson Lab nucleon structure program. I shall emphasize recent results from experiments exploring the spin structure of the nucleon and from dedicated experiments aimed at accessing the generalized parton distributions (GPDs).

  3. NCL Objective #4 - Nanotechnology Characterization Lab (NCL)

    Cancer.gov

    The Nanotechnology Characterization Lab (NCL) Objective #4: Examine the Biological and Functional Characteristics of MultiComponent/Combinatorial Aspects of Nanoscaled Therapeutic, Molecular and Clinical Diagnostics, and Detection Platforms.

  4. NCL Objective #3 - Nanotechnology Characterization Lab (NCL)

    Cancer.gov

    The Nanotechnology Characterization Lab (NCL) Objective #3: Identify and Characterize Critical Parameters Related to Nanomaterials' Absorption, Distribution, Metabolism, Excretion, and Acute Toxicity (ADME/Tox) Profile in Animal Models.

  5. System of Labs Direct Fabrication Technology

    SciTech Connect

    DIMOS,DUANE B.; OLIVER,MICHAEL S.; SCHLIENGER,M. ERIC

    1999-11-01

    The System of Labs Direct Fabrication Technology program was intended to foster cooperation and development in a cooperative effort between Sandia National Labs, Idaho National Energy and Environment Lab and Oak Ridge National Lab. The goal of this program was to bring together LENS (Laser Engineered Net Shaping) from Sandia, INEEL's spray forming process and the alloy development expertise of ORNL. This program investigated the feasibility of combining the LENS and spray forming processes to exploit the best features of both approaches. Further, since both processes were thought to result in a rapidly solidified structure, the alloy design expertise of ORNL offered the opportunity for alloy design or processing options which could more fully utilize the unique capabilities of the processes.

  6. Building a lab-in/on-fiber

    NASA Astrophysics Data System (ADS)

    Yuan, Libo

    2015-07-01

    Recently the "lab-on-fiber" technology has been rapidly developed and demonstrated in several interdisciplinary application fields. It expressed as multifunctional photonic devices and components arising from the integration onto optical fibers of different materials at micro and nano-scale with suitable physical, chemical and biological properties. In this paper, a briefly introduction about the concept of "lab-in/on-fiber" has been given. Then, we concentrate to discuss in-fiber waveguides integration technology which provides an infrastructure for "lab-in/on-fiber". Finally, we give several examples to show each unique experimental lab-in/on-fiber in different application fields and to demonstrate how it is possible to exploit the micro laboratories platforms.

  7. Thanatology for Everyone: Developmental Labs and Workshops

    ERIC Educational Resources Information Center

    O'Connell, Walter E.; And Others

    1977-01-01

    In an effort to "treat" the growing death concerns of many medical staffs, an experiential death and dying lab was created. Its evolution to meet changing needs is discussed, as well as future potential for work in this area. (Author)

  8. Microspectroscopy At Beamline 73 MAX-lab

    SciTech Connect

    Engdahl, Anders

    2010-02-03

    Presentation of some projects at the infrared microspectroscopy experimental station at beamline 73 MAX-lab. Among the subjects are found identification of organic residues in fossil material and examination of the chemistry in an old oak wood wreck.

  9. Infrared Spectroscopy in the General Chemistry Lab

    NASA Astrophysics Data System (ADS)

    Hill, Margaret A.

    2001-01-01

    Acquisition of infrared spectrometers for use in general chemistry lab was made possible through the NSF-sponsored Instrumentation and Laboratory Improvement (ILI) program. Three laboratory exercises suitable for first-year students are described in which students learn to interpret infrared spectra for simple structural identification. A polymer identification lab is the first of these with minimal sample preparation. It uses familiar household polymer samples and teaches students how to use infrared spectral data to determine what bond types are present in the polymers. In a second lab, students learn to prepare potassium bromide pellets of fluorene derivatives and identify them by their functional group differences. The final exercise combines IR with several other lab techniques to identify an organic acid from a field of fourteen possibilities.

  10. Administrator Helps Students Discover Lab Day

    NASA Video Gallery

    NASA Administrator Charles Bolden visited the Langdon Elementary School in Washington to support National Lab Day. Bolden, a veteran of four space shuttle flights, spoke with the fifth graders abou...

  11. PLC Support Software at Jefferson Lab

    SciTech Connect

    P. Chevtsov; S. Higgins; S. Schaffner; D. Seidman

    2002-10-01

    Several Automation Direct (DirectNet) Programmable Logic Controllers (PLCs) have been integrated into the accelerator control system at Jefferson Lab. The integration is based on new software that consists of three main parts: a PLC driver with a state machine control block, a device support module, and a common serial driver. The components of new software and experience gained with the use of this software for beam dump systems at Jefferson Lab are presented.

  12. Jefferson Lab Plotting Toolkit for accelerator controls

    SciTech Connect

    Chen, J; Keesee, M; Larrieu, C; Lei, G

    1999-03-01

    Experimental physics generates numerous data sets that scientists analyze using plots, graphs, etc. The Jefferson Lab Plotting Toolkit, JPT, a graphical user interface toolkit, was developed at Jefferson Lab to do data plotting. JPT provides data structures for sets of data, analyzes the range of the data, calculates the reasonable maximum, minimum, and scale of axes, sets line styles and marker styles, plots curves and fills areas.

  13. Artists-in-Labs: Processes of Inquiry

    NASA Astrophysics Data System (ADS)

    Scott, Jill

    This book verifies the need for the arts and the sciences to work together in order to develop more creative and conceptual approaches to innovation and presentation. By blending ethnographical case studies, scientific viewpoints and critical essays, the focus of this research inquiry is the lab context. For scientists, the lab context is one of the most important educational experiences. For contemporary artists, laboratories are inspiring spaces to investigate, share know-how transfer and search for new collaboration potentials.

  14. A comparative study on real lab and simulation lab in communication engineering from students' perspectives

    NASA Astrophysics Data System (ADS)

    Balakrishnan, B.; Woods, P. C.

    2013-05-01

    Over the years, rapid development in computer technology has engendered simulation-based laboratory (lab) in addition to the traditional hands-on (physical) lab. Many higher education institutions adopt simulation lab, replacing some existing physical lab experiments. The creation of new systems for conducting engineering lab activities has raised concerns among educators on the merits and shortcomings of both physical and simulation labs; at the same time, many arguments have been raised on the differences of both labs. Investigating the effectiveness of both labs is complicated, as there are multiple factors that should be considered. In view of this challenge, a study on students' perspectives on their experience related to key aspects on engineering laboratory exercise was conducted. In this study, the Visual Auditory Read and Kinetic model was utilised to measure the students' cognitive styles. The investigation was done through a survey among participants from Multimedia University, Malaysia. The findings revealed that there are significant differences for most of the aspects in physical and simulation labs.

  15. Assessing Usage and Maximizing Finance Lab Impact: A Case Exploration

    ERIC Educational Resources Information Center

    Noguera, Magdy; Budden, Michael Craig; Silva, Alberto

    2011-01-01

    This paper reports the results of a survey conducted to assess students' usage and perceptions of a finance lab. Finance labs differ from simple computer labs as they typically contain data boards, streaming market quotes, terminals and software that allow for real-time financial analyses. Despite the fact that such labs represent significant and…

  16. The Cardiac Electrophysiology Web Lab.

    PubMed

    Cooper, Jonathan; Scharm, Martin; Mirams, Gary R

    2016-01-19

    Computational modeling of cardiac cellular electrophysiology has a long history, and many models are now available for different species, cell types, and experimental preparations. This success brings with it a challenge: how do we assess and compare the underlying hypotheses and emergent behaviors so that we can choose a model as a suitable basis for a new study or to characterize how a particular model behaves in different scenarios? We have created an online resource for the characterization and comparison of electrophysiological cell models in a wide range of experimental scenarios. The details of the mathematical model (quantitative assumptions and hypotheses formulated as ordinary differential equations) are separated from the experimental protocol being simulated. Each model and protocol is then encoded in computer-readable formats. A simulation tool runs virtual experiments on models encoded in CellML, and a website (https://chaste.cs.ox.ac.uk/WebLab) provides a friendly interface, allowing users to store and compare results. The system currently contains a sample of 36 models and 23 protocols, including current-voltage curve generation, action potential properties under steady pacing at different rates, restitution properties, block of particular channels, and hypo-/hyperkalemia. This resource is publicly available, open source, and free, and we invite the community to use it and become involved in future developments. Investigators interested in comparing competing hypotheses using models can make a more informed decision, and those developing new models can upload them for easy evaluation under the existing protocols, and even add their own protocols. PMID:26789753

  17. Are Virtual Labs as Effective as Hands-on Labs for Undergraduate Physics? A Comparative Study at Two Major Universities

    ERIC Educational Resources Information Center

    Darrah, Marjorie; Humbert, Roxann; Finstein, Jeanne; Simon, Marllin; Hopkins, John

    2014-01-01

    Most physics professors would agree that the lab experiences students have in introductory physics are central to the learning of the concepts in the course. It is also true that these physics labs require time and money for upkeep, not to mention the hours spent setting up and taking down labs. Virtual physics lab experiences can provide an…

  18. Plasma turbulence

    SciTech Connect

    Horton, W.; Hu, G.

    1998-07-01

    The origin of plasma turbulence from currents and spatial gradients in plasmas is described and shown to lead to the dominant transport mechanism in many plasma regimes. A wide variety of turbulent transport mechanism exists in plasmas. In this survey the authors summarize some of the universally observed plasma transport rates.

  19. RoboLab and virtual environments

    NASA Technical Reports Server (NTRS)

    Giarratano, Joseph C.

    1994-01-01

    A useful adjunct to the manned space station would be a self-contained free-flying laboratory (RoboLab). This laboratory would have a robot operated under telepresence from the space station or ground. Long duration experiments aboard RoboLab could be performed by astronauts or scientists using telepresence to operate equipment and perform experiments. Operating the lab by telepresence would eliminate the need for life support such as food, water and air. The robot would be capable of motion in three dimensions, have binocular vision TV cameras, and two arms with manipulators to simulate hands. The robot would move along a two-dimensional grid and have a rotating, telescoping periscope section for extension in the third dimension. The remote operator would wear a virtual reality type headset to allow the superposition of computer displays over the real-time video of the lab. The operators would wear exoskeleton type arms to facilitate the movement of objects and equipment operation. The combination of video displays, motion, and the exoskeleton arms would provide a high degree of telepresence, especially for novice users such as scientists doing short-term experiments. The RoboLab could be resupplied and samples removed on other space shuttle flights. A self-contained RoboLab module would be designed to fit within the cargo bay of the space shuttle. Different modules could be designed for specific applications, i.e., crystal-growing, medicine, life sciences, chemistry, etc. This paper describes a RoboLab simulation using virtual reality (VR). VR provides an ideal simulation of telepresence before the actual robot and laboratory modules are constructed. The easy simulation of different telepresence designs will produce a highly optimum design before construction rather than the more expensive and time consuming hardware changes afterwards.

  20. Communication acoustics in Bell Labs

    NASA Astrophysics Data System (ADS)

    Flanagan, J. L.

    2001-05-01

    Communication aoustics has been a central theme in Bell Labs research since its inception. Telecommunication serves human information exchange. And, humans favor spoken language as a principal mode. The atmospheric medium typically provides the link between articulation and hearing. Creation, control and detection of sound, and the human's facility for generation and perception are basic ingredients of telecommunication. Electronics technology of the 1920s ushered in great advances in communication at a distance, a strong economical impetus being to overcome bandwidth limitations of wireline and cable. Early research established criteria for speech transmission with high quality and intelligibility. These insights supported exploration of means for efficient transmission-obtaining the greatest amount of speech information over a given bandwidth. Transoceanic communication was initiated by undersea cables for telegraphy. But these long cables exhibited very limited bandwidth (order of few hundred Hz). The challenge of sending voice across the oceans spawned perhaps the best known speech compression technique of history-the Vocoder, which parametrized the signal for transmission in about 300 Hz bandwidth, one-tenth that required for the typical waveform channel. Quality and intelligibility were grave issues (and they still are). At the same time parametric representation offered possibilities for encryption and privacy inside a traditional voice bandwidth. Confidential conversations between Roosevelt and Churchill during World War II were carried over high-frequency radio by an encrypted vocoder system known as Sigsaly. Major engineering advances in the late 1940s and early 1950s moved telecommunications into a new regime-digital technology. These key advances were at least three: (i) new understanding of time-discrete (sampled) representation of signals, (ii) digital computation (especially binary based), and (iii) evolving capabilities in microelectronics that

  1. Improving the Quality of Lab Reports by Using Them as Lab Instructions

    ERIC Educational Resources Information Center

    Haagen-Schuetzenhoefer, Claudia

    2012-01-01

    Lab exercises are quite popular in teaching science. Teachers have numerous goals in mind when teaching science laboratories. Nevertheless, empirical research draws a heterogeneous picture of the benefits of lab work. Research has shown that it does not necessarily contribute to the enhancement of practical abilities or content knowledge. Lab…

  2. Do Online Labs Work? An Assessment of an Online Lab on Cell Division

    ERIC Educational Resources Information Center

    Gilman, Sharon L.

    2006-01-01

    Some studies show students successfully learning science through online courses. This study compared students doing an online and in-class lab exercise on cell division. Online students performed slightly but significantly better on a follow-up content quiz, however, about half those expressed a strong preference for in-class lab work.

  3. PLASMA GENERATOR

    DOEpatents

    Foster, J.S. Jr.

    1958-03-11

    This patent describes apparatus for producing an electricity neutral ionized gas discharge, termed a plasma, substantially free from contamination with neutral gas particles. The plasma generator of the present invention comprises a plasma chamber wherein gas introduced into the chamber is ionized by a radiofrequency source. A magnetic field is used to focus the plasma in line with an exit. This magnetic field cooperates with a differential pressure created across the exit to draw a uniform and uncontaminated plasma from the plasma chamber.

  4. ESA SnowLab project

    NASA Astrophysics Data System (ADS)

    Wiesmann, Andreas; Caduff, Rafael; Frey, Othmar; Werner, Charles

    2016-04-01

    Retrieval of the snow water equivalaent (SWE) from passive microwave observations dates back over three decades to initial studies made using the first operational radiometers in space. However, coarse spatial resolution (25 km) is an acknowledged limitation for the application of passive microwave measurements. The natural variability of snow cover itself is also notable; properties such as stratigraphy and snow microstructure change both spatially and over time, affecting the microwave signature. To overcome this deficit, the satellite mission COld REgions Hydrology High-resolution Observatory (CoReH2O) was proposed to the European Space Agency (ESA) in 2005 in response to the call for Earth Explorer 7 candidate missions. CoReH2O was a dual frequency (X- and Ku-band) SAR mission aimed to provide maps of SWE over land and snow accumulation on glaciers at a spatial resolution of 200 to 500 meters with an unprecedented accuracy. Within the frame of preparatory studies for CoReH2O Phase A, ESA undertook several research initiatives from 2009 to 2013 to study the mission concept and capabilities of the proposed sensor. These studies provided a wealth of information on emission and backscattering signatures of natural snow cover, which can be exploited to study new potential mission concepts for retrieval of snow cover properties and other elements of the cryosphere. Currently data related to multi-frequency, multi-polarisation, multitemporal of active and passive microwave measurements are still not available. In addition, new methods related to e.g. tomography are currently under development and need to be tested with real data. Also, the potential of interferometric and polarimetric measurements of the snow cover and its possible impact for novel mission/retrieval concepts must be assessed. . The objective of the SnowLab activity is to fill this gap and complement these datasets from earlier campaigns by acquiring a comprehensive multi-frequency, multi

  5. eComLab: remote laboratory platform

    NASA Astrophysics Data System (ADS)

    Pontual, Murillo; Melkonyan, Arsen; Gampe, Andreas; Huang, Grant; Akopian, David

    2011-06-01

    Hands-on experiments with electronic devices have been recognized as an important element in the field of engineering to help students get familiar with theoretical concepts and practical tasks. The continuing increase the student number, costly laboratory equipment, and laboratory maintenance slow down the physical lab efficiency. As information technology continues to evolve, the Internet has become a common media in modern education. Internetbased remote laboratory can solve a lot of restrictions, providing hands-on training as they can be flexible in time and the same equipment can be shared between different students. This article describes an on-going remote hands-on experimental radio modulation, network and mobile applications lab project "eComLab". Its main component is a remote laboratory infrastructure and server management system featuring various online media familiar with modern students, such as chat rooms and video streaming.

  6. The greening of the national labs

    SciTech Connect

    Marshall, E.

    1993-04-02

    The big three weapons laboratories - Los Alamos, Livermore, and Sandia - could face dramatic changes in the way they do business if a proposal made by Representative George Brown (D-CA) is enacted. Brown, chairman of the House Science Committee, introduced a bill last week that would consolidate nuclear weapons R D from several labs (without saying at which sites or how). Brown also wants to shift the focus of the labs work more toward civilian projects, and the bill would involve the White House more directly in managing their research agenda. The Brown bill (HR 1432), which has won the backing of Representatives Marilyn Lloyd (D-TN), Tim Valentine (D-NC), Rick Boucher (D-VA), and Ron Wyden (R-OR), asks the secretary of energy to make a comprehensive study of current lab activities and submit a plan to redirect one or more of these labs to civilian missions by 31 March 1994. Brown and other members of Congress had considered turning one of the nuclear weapons centers into a green lab, that is, dedicating it to R D on environmental technology. That idea seems to have been set aside in favor of a more general formula that would be administered by a new Federal Laboratory Mission Evaluation and Coordination Committee, reporting to the president's science adviser. This watchdog panel, according to the bill, would seek to improve the efficiency and effectiveness of all the federal laboratories and ensure that between 10% and 20% of their budgets are devoted to collaborative efforts with industry and state and local governments. Administratively, the bill would also create some new positions at the Dept. of Energy (DOE), including an undersecretary for science and technology who would manage the labs.

  7. Plasma Medicine

    NASA Astrophysics Data System (ADS)

    Laroussi, M.; Kong, M. G.; Morfill, G.; Stolz, W.

    2012-05-01

    Foreword R. Satava and R. J. Barker; Part I. Introduction to Non-equilibrium Plasma, Cell Biology, and Contamination: 1. Introduction M. Laroussi; 2. Fundamentals of non-equilibrium plasmas M. Kushner and M. Kong; 3. Non-equilibrium plasma sources M. Laroussi and M. Kong; 4. Basic cell biology L. Greene and G. Shama; 5. Contamination G. Shama and B. Ahlfeld; Part II. Plasma Biology and Plasma Medicine: 6. Common healthcare challenges G. Isbary and W. Stolz; 7. Plasma decontamination of surfaces M. Kong and M. Laroussi; 8. Plasma decontamination of gases and liquids A. Fridman; 9. Plasma-cell interaction: prokaryotes M. Laroussi and M. Kong; 10. Plasma-cell interaction: eukaryotes G. Isbary, G. Morfill and W. Stolz; 11. Plasma based wound healing G. Isbary, G. Morfill and W. Stolz; 12. Plasma ablation, surgery, and dental applications K. Stalder, J. Woloszko, S. Kalghatgi, G. McCombs, M. Darby and M. Laroussi; Index.

  8. BEAMS Lab at MIT: Status report

    PubMed Central

    Liberman, Rosa G.; Skipper, Paul L.; Tannenbaum, Steven R.

    2009-01-01

    The Biological Engineering Accelerator Mass Spectrometry (BEAMS) Lab at the Massachusetts Institute of Technology is a facility dedicated to incorporating AMS into life sciences research. As such, it is focused exclusively on radiocarbon and tritium AMS and makes use of a particularly compact instrument of a size compatible with most laboratory space. Recent developments at the BEAMS Lab were aimed to improve different stages of the measurement process, such as the carbon sample injection interface, the simultaneous detection of tritium and hydrogen and finally, the overall operation of the system. Upgrades and results of those efforts are presented here. PMID:20383276

  9. An Online Lab Manual for Neurophysiology

    PubMed Central

    Olivo, Richard F.

    2003-01-01

    A combination of student interest, a grant for computers, and a suggestion from a colleague led me to convert the printed lab manual for my neurophysiology course into an online version. The web-based version incorporates videos of procedures, color photos, diagrams, links to articles, and other supplementary materials. This paper discusses designing for the web, retaining compatibility with print, layering information, making videos in digital format, and sharing self-published resources. The labs themselves (appendix) are traditional “wet” experiments with crayfish that have been used in many neurobiology courses. PMID:23494073

  10. Optical diagnostics in the MOCHI LabJet experiment

    NASA Astrophysics Data System (ADS)

    Card, Alexander; Vereen, Keon; Cretel, Chris; You, Setthivoine

    2014-10-01

    The MOCHI LabJet experiment is designed to observe the dynamics of canonical flux tubes and measure the conversion of magnetic helicity into ion flow helicity. In addition to magnetic probes capable of measuring 3D magnetic fields, Ion Doppler spectroscopy will reconstruct 3D flow fields from computed vector tomography of line-integrated ion Doppler measurements. About 500 collimated lines-of-sight are distributed into 64 viewports regularly arranged around the 1.4 m diameter spherical vacuum chamber. The custom fiber-bundles are arranged into a 2D array and coupled to a 1m focal length Czerny-Turner monochromator with custom matching optics. The spectral light is recorded with a dual-frame 1024 × 1024 intensified CCD camera with a 2 μs phosphor decay time capable of taking two measurements in a single plasma shot. A Mach-Zehnder HeNe interferometerer with unequal path lengths is also under construction for line-integrated plasma density measurements. This work is supported by US DOE Grant DE-SC0010340.

  11. Improving the Quality of Lab Reports by Using Them as Lab Instructions

    NASA Astrophysics Data System (ADS)

    Haagen-Schuetzenhoefer, Claudia

    2012-10-01

    Lab exercises are quite popular in teaching science. Teachers have numerous goals in mind when teaching science laboratories. Nevertheless, empirical research draws a heterogeneous picture of the benefits of lab work. Research has shown that it does not necessarily contribute to the enhancement of practical abilities or content knowledge. Lab activities are frequently based on recipe-like, step-by-step instructions ("cookbook style"), which do not motivate students to engage cognitively. Consequently, students put the emphasis on "task completion" or "manipulating equipment."2

  12. Awakening interest in the natural sciences - BASF's Kids' Labs.

    PubMed

    Lang, Cinthia

    2012-01-01

    At BASF's Ludwigshafen headquarters, kids and young adults in grades 1-13 can learn about chemistry in the Kids' Labs. Different programs exist for different levels of knowledge. In the two 'Hands-on Lab H(2)O & Co.' Kids' Labs, students from grades 1-6 explore the secrets of chemistry. BASF Kids' Labs have now been set up in over 30 countries. In Switzerland alone, almost 2,000 students have taken part in the 'Water Loves Chemistry' Kids' Lab since it was started in 2011. In Alsace, 600 students have participated to date. In the Teens' Lab 'Xplore Middle School', middle school students explore five different programs with the themes 'substance labyrinth', 'nutrition', 'coffee, caffeine & co.', 'cosmetics' and 'energy'. Biotechnological methods are the focus of the Teens' Lab 'Xplore Biotech' for students taking basic and advanced biology courses. In the 'Xplore High School' Teens' Lab, chemistry teachers present their own experimental lab instruction for students in basic and advanced chemistry courses. The Virtual Lab has been expanding the offerings of the BASF Kids' Labs since 2011. The online lab was developed by the company for the International Year Of Chemistry and gives kids and young adults the opportunity to do interactive experiments outside of the lab. PMID:23394237

  13. How Do New Teachers Choose New Labs?

    ERIC Educational Resources Information Center

    DeMeo, Stephen

    2007-01-01

    Forty-eight new secondary science teachers participated in a study that required a listing, discussion, and application of criteria to rank three chemistry laboratory procedures. The three similar lab procedures involved synthesis of a compound from its elements. The top criteria noted by teachers focused on procedural issues (i.e., timeliness,…

  14. Berkeley Lab's Cool Your School Program

    ScienceCinema

    Ivan Berry

    2013-06-24

    Cool Your School is a series of 6th-grade, classroom-based, science activities rooted in Berkeley Lab's cool-surface and cool materials research and aligned with California science content standards. The activities are designed to build knowledge, stimulate curiosity, and carry the conversation about human-induced climate change, and what can be done about it, into the community.

  15. The Hidden Costs of Wireless Computer Labs

    ERIC Educational Resources Information Center

    Daly, Una

    2005-01-01

    Various elementary schools and middle schools across the U.S. have purchased one or more mobile laboratories. Although the wireless labs have provided more classroom computing, teachers and technology aides still have mixed views about their cost-benefit ratio. This is because the proliferation of viruses and spyware has dramatically increased…

  16. Chemistry Lab Adapted for Blind Students.

    ERIC Educational Resources Information Center

    Seltzer, Richard J.

    1986-01-01

    Discusses a project at the University of Louisville in which chemistry laboratories are being adapted for use by blind students. Describes the operational analysis of tasks normally performed in labs. Provides specific recommendations on how to utilize new technologies to enable blind students to conduct hands-on learning experiments. (TW)

  17. Every Day Is National Lab Day

    ERIC Educational Resources Information Center

    Bull, Glen

    2010-01-01

    President Barack Obama recently issued a call for increased hands-on learning in U.S. schools in an address at the National Academy of Sciences. Obama concluded that the future of the United States depends on one's ability to encourage young people to "create, and build, and invent." In this article, the author discusses National Lab Day (NLD)…

  18. Lab-on a-Chip

    NASA Technical Reports Server (NTRS)

    2003-01-01

    Helen Cole, the project manager for the Lab-on-a-Chip Applications Development program, and Lisa Monaco, the project scientist for the program, insert a lab on a chip into the Caliper 42 which is specialized equipment that controls processes on commercial chips to support development of lab-on-a-chip applications. The system has special microscopes and imaging systems, so scientists can process and study different types of fluid, chemical, and medical tests conducted on chips. For example, researchers have examined fluorescent bacteria as it flows through the chips' fluid channels or microfluidic capillaries. Researchers at NASA's Marshall Space Flight Center (MSFC) in Huntsville, Alabama, have been studying how the lab-on-a-chip technology can be used for microbial detection, water quality monitoring, and detecting biosignatures of past or present life on Mars. The Marshall Center team is also collaborating with scientists at other NASA centers and at universities to develop custom chip designs for not only space applications, but for many Earth applications, such as for detecting deadly microbes in heating and air systems. (NASA/MSFC/D.Stoffer)

  19. The Hall D Detector at Jefferson Lab

    SciTech Connect

    Curtis A. Meyer

    2000-12-12

    The Hall D experiment at Jefferson Lab is part of the proposed CEBAF upgrade to 12 GeV beam energy. The Experiment will study gluonic excitations of mesons in the 1.5 to 2.5 GeV/c{sup 2} mass region using an 8 to 9 GeV beam of linearly polarized photons.

  20. Ames Lab 101: Single Crystal Growth

    ScienceCinema

    Schlagel, Deborah

    2014-06-04

    Ames Laboratory scientist Deborah Schlagel talks about the Lab's research in growing single crystals of various metals and alloys. The single crystal samples are vital to researchers' understanding of the characteristics of a materials and what gives these materials their particular properties.

  1. Ames Lab 101: Single Crystal Growth

    SciTech Connect

    Schlagel, Deborah

    2013-09-27

    Ames Laboratory scientist Deborah Schlagel talks about the Lab's research in growing single crystals of various metals and alloys. The single crystal samples are vital to researchers' understanding of the characteristics of a materials and what gives these materials their particular properties.

  2. Folding Inquiry into Cookbook Lab Activities

    ERIC Educational Resources Information Center

    Gooding, Julia; Metz, Bill

    2012-01-01

    Cookbook labs have been a part of science programs for years, even though they serve little purpose other than to verify phenomena that have been previously presented by means other than through investigations. Cookbook science activities follow a linear path to a known outcome, telling students what procedures to follow, which materials to use,…

  3. No weapons in the weapons lab

    NASA Astrophysics Data System (ADS)

    Trebino, Rick

    2010-03-01

    I spent 12 years working at a top-secret nuclear-weapons lab that had its own dedicated force of heavily armed security guards. Of course, security-related incidents were rare, so the guards' main challenge was simply staying awake.

  4. Favorite Labs from Outstanding Teachers. Monograph VII.

    ERIC Educational Resources Information Center

    Sheldon, Daniel S., Ed.; Penick, John E., Ed.

    This monograph is the first attempt to collect and share some of the teaching techniques, activities, and ideas of former recipients of the Outstanding Biology Teacher Award. The lessons are organized into topical themes to facilitate their incorporation into standard curriculum. The manual is divided into two main sections, "Labs" and "Ideas."…

  5. Berkeley Lab's Cool Your School Program

    SciTech Connect

    Ivan Berry

    2012-07-30

    Cool Your School is a series of 6th-grade, classroom-based, science activities rooted in Berkeley Lab's cool-surface and cool materials research and aligned with California science content standards. The activities are designed to build knowledge, stimulate curiosity, and carry the conversation about human-induced climate change, and what can be done about it, into the community.

  6. Encouraging Creativity in the Science Lab

    ERIC Educational Resources Information Center

    Eyster, Linda

    2010-01-01

    Although science is a creative endeavor (NRC 1996, p. 46), many students think they are not encouraged--or even allowed--to be creative in the laboratory. When students think there is only one correct way to do a lab, their creativity is inhibited. Park and Seung (2008) argue for the importance of creativity in science classrooms and for the…

  7. Medical Lab Technician. Post Secondary Curriculum Guide.

    ERIC Educational Resources Information Center

    Simpson, Bruce; And Others

    Intended to provide a model for organizing vocational instructional content, this curriculum guide consists of information pertinent to conducting a postsecondary level course for training medical lab technicians. While the guide is primarily oriented towards the classroom, whether as a primary resource or as a supplement to other teaching…

  8. Computer Labs Report to the Holodeck

    ERIC Educational Resources Information Center

    Raths, David

    2011-01-01

    In many ways, specialized computer labs are the black holes of IT organizations. Budgets, equipment, employees--even space itself--are sucked in. Given a choice, many IT shops would engage warp drive and escape their gravitational pull forever. While Captain Kirk might have looked to Scotty for a fix to the problem, colleges and universities are…

  9. Design Lab. USMES "How To" Series.

    ERIC Educational Resources Information Center

    Donahoe, Charles; And Others

    The major emphasis in all Unified Sciences and Mathematics for Elementary Schools (USMES) units is on open-ended, long-range investigations of real problems. Since children often design and build things in USMES, 26 "Design Lab" cards provide information on the safe use and simple maintenance of tools. Each card has a large photograph of the tool…

  10. Designing Inquiry-Oriented Science Lab Activities

    ERIC Educational Resources Information Center

    Longo, Christopher M.

    2011-01-01

    Mr. Smith and Ms. D'Amico are two veteran science teachers in a well-performing school district. Both teachers use weekly lab exercises and experiments as formative assessments. In their middle school classrooms, children are engaged and eager to learn. As students walk into Mr. Smith's classroom, a prescribed, step-by-step procedure of the day's…

  11. Gapminder: An AP Human Geography Lab Assignment

    ERIC Educational Resources Information Center

    Keller, Kenneth H.

    2012-01-01

    This lesson is designed as a lab assignment for Advanced Placement (AP) Human Geography students wherein they use the popular Gapminder web site to compare levels of development in countries from different world regions. For this lesson, it is important for the teacher to practice with Gapminder before giving the assignment to students. (Contains…

  12. Developing and Maintaining a Multimedia Language Lab

    ERIC Educational Resources Information Center

    Bingham, Scott; Humphries, Marshall

    1998-01-01

    Recent trends in education have pushed for multimedia to be made a part of every effective language program. As a result, language programs around the world are incorporating computer labs into their curricula. However, as many instructors and administrators are unfamiliar with this newer technology, integrating computer assisted language learning…

  13. RSVP Basic Math Lab: MAT 1992.

    ERIC Educational Resources Information Center

    Emerson, Sunny

    During Spring and Summer 1978, the basic mathematics lab course offered at Miami-Dade Community College began to use the college's Response System with Variable Prescriptions (RSVP) to assist in individualizing instruction and record-keeping. The RSVP computer software package permits the maintenance of a record on each student, which includes…

  14. Tap Teens' Curiosity with Lab Band.

    ERIC Educational Resources Information Center

    Saunders, Jane

    2002-01-01

    Describes the Lab Band project used with 12th grade students at the Westgate Collegiate and Vocational Institute in Thunder Bay, Ontario (Canada). Explains that each band student taught a peer how to play their instrument which created versatility in the band. States that all students kept a reflective journal. (CMK)

  15. A Natural Selection Lab for Environmental Biology.

    ERIC Educational Resources Information Center

    Fiero, Brad; Mackie, Steve

    1997-01-01

    Presents a lab that investigates the evolution of genetic resistance, the importance of genetic variability in the process of adaptation, and the ecological and economic consequences of pesticide use. Allows students to investigate the relationship between population size, genetic variability, and adaptability. Appendices contain the genetic card…

  16. From Computer Lab to Technology Class.

    ERIC Educational Resources Information Center

    Sherwood, Sandra

    1999-01-01

    Discussion of integrating technology into elementary school classrooms focuses on teacher training that is based on a three-year plan developed at an elementary school in Marathon, New York. Describes the role of a technology teacher who facilitates technology integration by running the computer lab, offering workshops, and developing inservice…

  17. A Measured Approach to Microcomputer Lab Design.

    ERIC Educational Resources Information Center

    Duggan, Brian

    1994-01-01

    Explores design considerations for a functional microcomputer lab, including ergonomics and furnishings; access for the disabled; the use of other media; hardware security; and software security, including virus protection. A summary paragraph comments on the role of planning and forecasting. A bibliography of eight titles for further reading is…

  18. A New Twist on Torque Labs

    ERIC Educational Resources Information Center

    Lane, W. Brian

    2014-01-01

    The traditional introductory-level meterstick-balancing lab assumes that students already know what torque is and that they readily identify it as a physical quantity of interest. We propose a modified version of this activity in which students qualitatively and quantitatively measure the amount of force required to keep the meterstick level. The…

  19. Surfactant Adsorption: A Revised Physical Chemistry Lab

    ERIC Educational Resources Information Center

    Bresler, Marc R.; Hagen, John P.

    2008-01-01

    Many physical chemistry lab courses include an experiment in which students measure surface tension as a function of surfactant concentration. In the traditional experiment, the data are fit to the Gibbs isotherm to determine the molar area for the surfactant, and the critical micelle concentration is used to calculate the Gibbs energy of micelle…

  20. Auditors Scour Labs in Search of Waste.

    ERIC Educational Resources Information Center

    Broad, William J.

    1982-01-01

    A federal audit which began in June 1982 and should be completed by November is being conducted to determine possible extravagance, misuse, waste, fraud and abuse of laboratory equipment purchased on federal contracts and grants. A list of waste and abuse found mostly at industrial labs is included. (JN)

  1. "Probeware" on Increase in Schools' Science Labs

    ERIC Educational Resources Information Center

    Trotter, Andrew

    2008-01-01

    Though the term, "probeware" may not be a household word, it has grown more familiar to science educators over the past decade, as a new generation of high-tech instruments for collecting and analyzing data from the physical world have been introduced into school science labs. Today, those tools include digital scientific probes or sensors that…

  2. Technology Rich Biology Labs: Effects of Misconceptions.

    ERIC Educational Resources Information Center

    Kuech, Robert; Zogg, Gregory; Zeeman, Stephan; Johnson, Mark

    This paper describes a study conducted on the lab sections of the general biology course for non-science majors at the University of New England, and reports findings of student misconceptions about photosynthesis and the mass/carbon uptake during plant growth. The current study placed high technology analytic tools in the hands of introductory…

  3. World's Tallest Barometer, an Educational Lab Apparatus

    NASA Astrophysics Data System (ADS)

    Bennett, T. E.

    2012-12-01

    The barometer has been around since the early 1640's when Italian scientists Berte inadvertently made a water barometer and Torricelli purposely made a mercury barometer. A water barometer has the problem of high vapor pressure, so that it does not maintain a good vacuum above the water column unless continually vacuum pumped. The high density of mercury and its low vapor pressure allows a mercury barometer to be a compact and accurate lab apparatus. The newly being built barometer at Portland State University's Maseeh College of Engineering atrium makes use of doubly distilled synthetic vacuum pump oil as the working fluid. The fluid has a specific gravity of 0.83 and very low vapor pressure. The nominal height of this barometer is expected to be 12.4m. This barometer will be used in the Civil Engineering Fluids Lab as a lab apparatus and the reservoir has the capability of being pressurized or depressurized artificially, so that the fluid column can be manipulated and measured by the lab students. With the placement of the tall barometer in the atrium of the Engineering Building, the barometer will be visible to the public and to touring student groups.

  4. A New Take on Student Lab Reports

    ERIC Educational Resources Information Center

    Hazzard, Edmund

    2014-01-01

    The written lab report--a concise and accurate accounting of an experiment, including a summary of the procedure, presentation of the results, reasoned analysis, and thoughtful explanation--is essential to the scientific endeavor and a key expression and product of inquiry. Generally, however, students and teachers dislike these reports, the…

  5. NASA GeneLab Concept of Operations

    NASA Technical Reports Server (NTRS)

    Thompson, Terri; Gibbs, Kristina; Rask, Jon; Coughlan, Joseph; Smith, Jeffrey

    2014-01-01

    NASA's GeneLab aims to greatly increase the number of scientists that are using data from space biology investigations on board ISS, emphasizing a systems biology approach to the science. When completed, GeneLab will provide the integrated software and hardware infrastructure, analytical tools and reference datasets for an assortment of model organisms. GeneLab will also provide an environment for scientists to collaborate thereby increasing the possibility for data to be reused for future experimentation. To maximize the value of data from life science experiments performed in space and to make the most advantageous use of the remaining ISS research window, GeneLab will apply an open access approach to conducting spaceflight experiments by generating, and sharing the datasets derived from these biological studies in space.Onboard the ISS, a wide variety of model organisms will be studied and returned to Earth for analysis. Laboratories on the ground will analyze these samples and provide genomic, transcriptomic, metabolomic and proteomic data. Upon receipt, NASA will conduct data quality control tasks and format raw data returned from the omics centers into standardized, annotated information sets that can be readily searched and linked to spaceflight metadata. Once prepared, the biological datasets, as well as any analysis completed, will be made public through the GeneLab Space Bioinformatics System webb as edportal. These efforts will support a collaborative research environment for spaceflight studies that will closely resemble environments created by the Department of Energy (DOE), National Center for Biotechnology Information (NCBI), and other institutions in additional areas of study, such as cancer and environmental biology. The results will allow for comparative analyses that will help scientists around the world take a major leap forward in understanding the effect of microgravity, radiation, and other aspects of the space environment on model organisms

  6. Introduction to Computing: Lab Manual. Faculty Guide [and] Student Guide.

    ERIC Educational Resources Information Center

    Frasca, Joseph W.

    This lab manual is designed to accompany a college course introducing students to computing. The exercises are designed to be completed by the average student in a supervised 2-hour block of time at a computer lab over 15 weeks. The intent of each lab session is to introduce a topic and have the student feel comfortable with the use of the machine…

  7. Constructing the Components of a Lab Report Using Peer Review

    ERIC Educational Resources Information Center

    Berry, David E.; Fawkes, Kelli L.

    2010-01-01

    A protocol that emphasizes lab report writing using a piecemeal approach coupled with peer review is described. As the lab course progresses, the focus of the report writing changes sequentially through the abstract and introduction, the discussion, and the procedure. Two styles of lab programs are presented. One style rotates the students through…

  8. Behind the Scenes at Berkeley Lab - The Mechanical Fabrication Facility

    ScienceCinema

    Wells, Russell; Chavez, Pete; Davis, Curtis; Bentley, Brian

    2014-09-15

    Part of the Behind the Scenes series at Berkeley Lab, this video highlights the lab's mechanical fabrication facility and its exceptional ability to produce unique tools essential to the lab's scientific mission. Through a combination of skilled craftsmanship and precision equipment, machinists and engineers work with scientists to create exactly what's needed - whether it's measured in microns or meters.

  9. Behind the Scenes at Berkeley Lab - The Mechanical Fabrication Facility

    SciTech Connect

    Wells, Russell; Chavez, Pete; Davis, Curtis; Bentley, Brian

    2013-05-17

    Part of the Behind the Scenes series at Berkeley Lab, this video highlights the lab's mechanical fabrication facility and its exceptional ability to produce unique tools essential to the lab's scientific mission. Through a combination of skilled craftsmanship and precision equipment, machinists and engineers work with scientists to create exactly what's needed - whether it's measured in microns or meters.

  10. Revising Geology Labs To Explicitly Use the Scientific Method.

    ERIC Educational Resources Information Center

    Hannula, Kimberly A.

    2003-01-01

    Proposes that content- or skill-based labs can be revised to explicitly involve the scientific method by asking students to propose hypotheses before making observations. Students' self-assessment showed they felt that they learned a great deal from this style of labs and found the labs to be fun; however, students felt that they learned little…

  11. The Portable Usability Testing Lab: A Flexible Research Tool.

    ERIC Educational Resources Information Center

    Hale, Michael E.; And Others

    A group of faculty at the University of Georgia obtained funding for a research and development facility called the Learning and Performance Support Laboratory (LPSL). One of the LPSL's primary needs was obtaining a portable usability lab for software testing, so the facility obtained the "Luggage Lab 2000." The lab is transportable to any site…

  12. Stable processing with unstable plasmas?

    NASA Astrophysics Data System (ADS)

    Benjamin, Neil

    2004-09-01

    Plasmas are employed for materials processing over a very wide range of conditions. For typical etch applications, these include plasmas generated in various ways with RF at various frequencies and power levels ranging from 100W up to 10000W. Mixed gas chemistries are used, at pressures ranging from mTorr to Torr, with multiple, often electron-attaching species present in significant proportions. These complex conditions are typically produced in production reactors that are hardly optimal for diagnostic access, so this is not a recipe for a quiescent lab plasma that may be conveniently studied. Inevitably a range of plasma instabilities and other unstable conditions may be encountered, often without immediate detection, as one spans the operating space. These unstable conditions may range from internal well known linear and quasi-linear plasma instabilities1, 2 to gross non-linear relaxation oscillations3, 4, 5, parametric drifts and even plasma extinguishment. Many of these phenomena involve strong interactions with the materials being processed and the external hardware that supports the reactor module operation. We will discuss certain questions: how may one observe such conditions (if you can't see it, does it matter from the processing perspective?); is it advisable to continue processing regardless; what might the consequences be, good or bad, and how they may be controlled6? 1) T. H. Stix, Waves in Plasmas, American Institute of Physics, New York (1992), and The Theory of Plasma Waves, McGraw-Hill (1962). 2) N. Krall and A. Trivelpiece, Principles of Plasma Physics, McGraw-Hill (1973). 3) M. Tuszewski, J. App. Phys., 79 8967 (1996) 4) M. A. Lieberman et. al., Appl. Phys. Lett. 75, 3617 (1999) 5) A. M. Marakhtanov et..al., J. Vac. Sci. Tech. A, 21 1864 (2003) and references therein. 6) D.L.Goodman and N. M. P. Benjamin, J. Phys. D, 36 2845 (2003).

  13. Living Labs: Arbiters of Mid- and Ground-Level Innovation

    NASA Astrophysics Data System (ADS)

    Almirall, Esteve; Wareham, Jonathan

    We perform a comparative case analysis of four working Living Labs to identify their common functions. Theoretically, we ground our analysis in terms of how they function, their processes of exploration and exploitation, where they work in the innovation strata, how new socially negotiated meanings are negotiated and diffused. Our research highlights four novel insights: first, Living Labs function at the low and mid level innovation strata; second, Living Labs are technologically agnostic; third, Living Labs use context based experience to surface new, socially constructed meanings for products and services; and finally, Living Labs are equally focused on exploration and exploitation.

  14. Code update: MicroWaveLab

    NASA Astrophysics Data System (ADS)

    DeFord, John F.

    1997-02-01

    MicroWaveLab is a commercial software package that is used for design of RF and microwave components. The finite-element method is used to solve the frequency-domain Maxwell equations in 3-D volumes containing isotropic and/or anisotropic media. Edge elements are employed to avoid spurious modes, and several different element topologies have been implemented. The finite-element matrix is solved via either LU decomposition or a conjugate-gradient iterative method. Another approach is available wherein the total fields due to an excitation are expanded in terms of the 3-D eigenmodes of the structure. MicroWaveLab has geometry creation capabilities based on the ACIS solid geometry kernel, and pre- and postprocessing support for network parameters and antennas.

  15. Expert system for scheduling simulation lab sessions

    NASA Technical Reports Server (NTRS)

    Lund, Chet

    1990-01-01

    Implementation and results of an expert system used for scheduling session requests for the Systems Engineering Simulator (SES) laboratory at the NASA Johnson Space Center (JSC) are discussed. Weekly session requests are received from astronaut crew trainers, procedures developers, engineering assessment personnel, software developers, and various others who wish to access the computers, scene generators, and other simulation equipment available to them in the SES lab. The expert system under discussion is comprised of a data acquisition portion - two Pascal programs run on a personal computer - and a CLIPS program installed on a minicomputer. A brief introduction to the SES lab and its scheduling background is given. A general overview of the system is provided, followed by a detailed description of the constraint-reduction process and of the scheduler itself. Results from a ten-week trial period using this approach are discussed. Finally, a summary of the expert system's strengths and shortcomings are provided.

  16. LAB and other lithospheric discontinuities below Cratons

    NASA Astrophysics Data System (ADS)

    Sodoudi, Forough

    2013-04-01

    Cratons are extremely stable continental areas of the Earth's crust, which have been formed and remained largely unchanged since Precambrian. However, their formation and how they survived destruction over billions of years remains a subject of debate. Seismic properties of the cratonic lithosphere reflect its composition and physical state and obtain basic constraints on processes of the formation and evolution of continents. Insight on these issues may be gained by determining the depth and the nature of the Lithosphere-Asthenosphere Boundary (LAB), which is a necessary element of the plate tectonic theory. However, It has proved quite "elusive" beneath the oldest continental areas. What is missing to date is a consensus on the feature that would correspond to the LAB and whether such a feature exists everywhere beneath cratons. The relatively recently developed S receiver function technique employing S-to-P conversions appears promising for detecting the LAB with a sufficiently high resolution and density. A growing number of regional observations obtained from S receiver function studies has detected discontinuities characterized by a significant negative velocity contrast in the upper mantle. However, challenges still remain in detecting the S-to-P conversions from the LAB beneath the Precambrian cratons. Some recent SRF studies observed a deep (> 160 km) negative velocity contrast beneath cratons and interpreted it as the LAB. For example, a deep LAB at about 250 km was reported beneath the Kalahari craton by different authors. Similar results were also obtained beneath some parts of the Canadian shield, East European Craton, Australia, the Arabian Shield and Tanzania craton. In contrast, other SRF studies found no evidence for negative discontinuities at these depths in the North American craton, in Kalahari craton or in Australia. Instead they revealed a very sharp negative velocity gradient at much shallower depth (60-150 km), leading some authors to infer

  17. Jefferson Lab Data Acquisition Run Control System

    SciTech Connect

    Vardan Gyurjyan; Carl Timmer; David Abbott; William Heyes; Edward Jastrzembski; David Lawrence; Elliott Wolin

    2004-10-01

    A general overview of the Jefferson Lab data acquisition run control system is presented. This run control system is designed to operate the configuration, control, and monitoring of all Jefferson Lab experiments. It controls data-taking activities by coordinating the operation of DAQ sub-systems, online software components and third-party software such as external slow control systems. The main, unique feature which sets this system apart from conventional systems is its incorporation of intelligent agent concepts. Intelligent agents are autonomous programs which interact with each other through certain protocols on a peer-to-peer level. In this case, the protocols and standards used come from the domain-independent Foundation for Intelligent Physical Agents (FIPA), and the implementation used is the Java Agent Development Framework (JADE). A lightweight, XML/RDF-based language was developed to standardize the description of the run control system for configuration purposes.

  18. Are Virtual Labs as Effective as Hands-on Labs for Undergraduate Physics? A Comparative Study at Two Major Universities

    NASA Astrophysics Data System (ADS)

    Darrah, Marjorie; Humbert, Roxann; Finstein, Jeanne; Simon, Marllin; Hopkins, John

    2014-12-01

    Most physics professors would agree that the lab experiences students have in introductory physics are central to the learning of the concepts in the course. It is also true that these physics labs require time and money for upkeep, not to mention the hours spent setting up and taking down labs. Virtual physics lab experiences can provide an alternative or supplement to these traditional hands-on labs. However, physics professors may be very hesitant to give up the hands-on labs, which have been such a central part of their courses, for a more cost and time-saving virtual alternative. Thus, it is important to investigate how the learning from these virtual experiences compares to that acquired through a hands-on experience. This study evaluated a comprehensive set of virtual labs for introductory level college physics courses and compared them to a hands-on physics lab experience. Each of the virtual labs contains everything a student needs to conduct a physics laboratory experiment, including: objectives, background theory, 3D simulation, brief video, data collection tools, pre- and postlab questions, and postlab quiz. This research was conducted with 224 students from two large universities and investigated the learning that occurred with students using the virtual labs either in a lab setting or as a supplement to hands-on labs versus a control group of students using the traditional hands-on labs only. Findings from both university settings showed the virtual labs to be as effective as the traditional hands-on physics labs.

  19. Are Virtual Labs as Effective as Hands-on Labs for Undergraduate Physics? A Comparative Study at Two Major Universities

    NASA Astrophysics Data System (ADS)

    Darrah, Marjorie; Humbert, Roxann; Finstein, Jeanne; Simon, Marllin; Hopkins, John

    2014-08-01

    Most physics professors would agree that the lab experiences students have in introductory physics are central to the learning of the concepts in the course. It is also true that these physics labs require time and money for upkeep, not to mention the hours spent setting up and taking down labs. Virtual physics lab experiences can provide an alternative or supplement to these traditional hands-on labs. However, physics professors may be very hesitant to give up the hands-on labs, which have been such a central part of their courses, for a more cost and time-saving virtual alternative. Thus, it is important to investigate how the learning from these virtual experiences compares to that acquired through a hands-on experience. This study evaluated a comprehensive set of virtual labs for introductory level college physics courses and compared them to a hands-on physics lab experience. Each of the virtual labs contains everything a student needs to conduct a physics laboratory experiment, including: objectives, background theory, 3D simulation, brief video, data collection tools, pre- and postlab questions, and postlab quiz. This research was conducted with 224 students from two large universities and investigated the learning that occurred with students using the virtual labs either in a lab setting or as a supplement to hands-on labs versus a control group of students using the traditional hands-on labs only. Findings from both university settings showed the virtual labs to be as effective as the traditional hands-on physics labs.

  20. Jefferson Lab Science: Past and Future

    SciTech Connect

    McKeown, Robert

    2015-09-01

    The Continuous Electron Beam Accelerator Facility (CEBAF) and associated experimental equipment at Jefferson Lab comprise a unique facility for experimental nuclear physics. This facility is presently being upgraded, which will enable a new experimental program with substantial discovery potential to address important topics in nuclear, hadronic, and electroweak physics. Further in the future, it is envisioned that the Laboratory will evolve into an electron-ion colliding beam facility.

  1. Overview of Nuclear Physics at Jefferson Lab

    SciTech Connect

    McKeown, Robert D.

    2013-08-01

    The Continuous Electron Beam Accelerator Facility (CEBAF) and associated experimental equipment at Jefferson Lab comprise a unique facility for experimental nuclear physics. This facility is presently being upgraded, which will enable a new experimental program with substantial discovery potential to address important topics in nuclear, hadronic, and electroweak physics. Further in the future, it is envisioned that the Laboratory will evolve into an electron-ion colliding beam facility.

  2. Optical Calibration For Jefferson Lab HKS Spectrometer

    SciTech Connect

    L. Yuan; L. Tang

    2005-11-04

    In order to accept very forward angle scattering particles, Jefferson Lab HKS experiment uses an on-target zero degree dipole magnet. The usual spectrometer optics calibration procedure has to be modified due to this on-target field. This paper describes a new method to calibrate HKS spectrometer system. The simulation of the calibration procedure shows the required resolution can be achieved from initially inaccurate optical description.

  3. Jefferson Lab Science: Present and Future

    DOE PAGESBeta

    McKeown, Robert D.

    2015-02-12

    The Continuous Electron Beam Accelerator Facility (CEBAF) and associated experimental equipment at Jefferson Lab comprise a unique facility for experimental nuclear physics. Furthermore, this facility is presently being upgraded, which will enable a new experimental program with substantial discovery potential to address important topics in nuclear, hadronic, and electroweak physics. Further in the future, it is envisioned that the Laboratory will evolve into an electron-ion colliding beam facility.

  4. Jefferson Lab Science: Present and Future

    NASA Astrophysics Data System (ADS)

    McKeown, R. D.

    2015-09-01

    The continuous electron beam accelerator facility and associated experimental equipment at Jefferson Lab comprise a unique facility for experimental nuclear physics. This facility is presently being upgraded, which will enable a new experimental program with substantial discovery potential to address important topics in nuclear, hadronic, and electroweak physics. Further in the future, it is envisioned that the Laboratory will evolve into an electron-ion colliding beam facility.

  5. Cofactor regeneration at the lab scale.

    PubMed

    Wichmann, R; Vasic-Racki, D

    2005-01-01

    Progress made in lab-scale applications of various coenzyme regeneration systems over the last two decades has mainly focused on the applications of NAD+/NADH- and NADP+/NADPH-dependent oxidoreductase reactions. In situ regeneration systems for these reactions, as well as whole cell, enzymatic, electro-enzymatic, chemical, and photochemical reactions are presented, including details about their efficiency and novelty. The progress of enzyme reaction engineering is also reported. PMID:15791939

  6. Berkeley Lab Computing Sciences: Accelerating Scientific Discovery

    SciTech Connect

    Hules, John A

    2008-12-12

    Scientists today rely on advances in computer science, mathematics, and computational science, as well as large-scale computing and networking facilities, to increase our understanding of ourselves, our planet, and our universe. Berkeley Lab's Computing Sciences organization researches, develops, and deploys new tools and technologies to meet these needs and to advance research in such areas as global climate change, combustion, fusion energy, nanotechnology, biology, and astrophysics.

  7. The NASA Langley Isolator Dynamics Research Lab

    NASA Technical Reports Server (NTRS)

    Middleton, Troy F.; Balla, Robert J.; Baurle, Robert A.; Humphreys, William M.; Wilson, Lloyd G.

    2010-01-01

    The Isolator Dynamics Research Lab (IDRL) is under construction at the NASA Langley Research Center in Hampton, Virginia. A unique test apparatus is being fabricated to support both wall and in-stream measurements for investigating the internal flow of a dual-mode scramjet isolator model. The test section is 24 inches long with a 1-inch by 2-inch cross sectional area and is supplied with unheated, dry air through a Mach 2.5 converging-diverging nozzle. The test section is being fabricated with two sets (glass and metallic) of interchangeable sidewalls to support flow visualization and laser-based measurement techniques as well as static pressure, wall temperature, and high frequency pressure measurements. During 2010, a CFD code validation experiment will be conducted in the lab in support of NASA s Fundamental Aerodynamics Program. This paper describes the mechanical design of the Isolator Dynamics Research Lab test apparatus and presents a summary of the measurement techniques planned for investigating the internal flow field of a scramjet isolator model.

  8. Programmable Electro Osmotic Lab on a Chip

    NASA Astrophysics Data System (ADS)

    Class, Andreas G.

    2014-11-01

    We propose to use a 2D check-board patterned surface with alternating zeta potential made of semiconductors and individually controllable electrodes surrounding each field to drive by electro osmosis an arbitrary flow along the surface within the cavity of a lab-on-a-chip. In contrast to other fluid mechanic devices the flow is not driven by pressure gradients but rather by a controllable fluid velocity within the Debay boundary layer. Thus fluid is transported like a parcel on a conveyor belt. The use of alternating zeta potential fields and alternating electrode polarities allows to transport flow along multiple fields without the need to increase voltage. Basic functionality of the chip is accomplished by appropriate programming: fluid transport along straight and curved path, merging and splitting flow paths, flow crossing by red light traffic control, and mixing. Implementing sensors for electric resistance on the Lab-On-A-Chip allows to program a diagnosis application using electrophoresis for detection. Transport within the Lab-On-A-Chip can be described by Stokes-flow subject to the boundary conditions given by asymptotic theory in the thin-Debay-layer-limit describing field driven electro kinetic effects.

  9. Space-plasma campaign on UCLA's Large Plasma Device (LAPD)

    NASA Astrophysics Data System (ADS)

    Koepke, M. E.; Finnegan, S. M.; Knudsen, D. J.; Vincena, S.

    2007-05-01

    Knudsen [JGR, 1996] describes a potential role for stationary Alfvén (StA) waves in auroral arcs' frequency dependence. Magnetized plasmas are predicted to support electromagnetic perturbations that are static in a fixed frame if there is uniform background plasma convection. These stationary waves should not be confused with standing waves that oscillate in time with a fixed, spatially varying envelope. Stationary waves have no time variation in the fixed frame. In the drifting frame, there is an apparent time dependence as plasma convects past fixed electromagnetic structures. We describe early results from an experimental campaign to reproduce in the lab the basic conditions necessary for the creation of StA waves, namely quasi-steady-state convection across magnetic field-aligned current channels. We show that an off-axis, fixed channel of electron current (and depleted density) is created in the Large Plasma Device Upgrade (LAPD) at UCLA, using a small, heated, oxide-coated electrode at one plasma-column end and we show that the larger plasma column rotates about its cylindrical axis from a radial electric field imposed by a special termination electrode on the same end. Initial experimentation with plasma-rotation-inducing termination electrodes began in May 2006 in the West Virginia Q Machine, leading to two designs that, in January 2007, were tested in LAPD. The radial profile of azimuthal velocity was consistent with predictions of rigid-body rotation. Current-channel experiments in LAPD, in August 2006, showed that inertial Alfvén waves could be concentrated in an off-axis channel of electron current and depleted plasma density. These experimental results will be presented and discussed. This research is supported by DOE and NSF.

  10. EarthLabs: A National Model for Earth Science Lab Courses

    NASA Astrophysics Data System (ADS)

    McDaris, J. R.; Dahlman, L.; Barstow, D.

    2008-12-01

    As a response to the need for more rigorous, inquiry-based high school Earth science courses, a coalition of scientists, educators, and five states have created EarthLabs, a set of pilot modules that can serve as a national model for lab-based science courses. The content of EarthLabs chapters focuses on Earth system science and environmental literacy and conforms to the National Science Education Standards as well as the states' curriculum frameworks. The effort is funded by NOAA's Environmental Literacy program. The pilot modules present activities on Corals, Drought, Fisheries, and Hurricanes. The Fisheries and Hurricanes units were reviewed and field-tested by educators in Texas and Arizona. The feedback from this evaluation led to revisions of these units and guided development of the Corals and Drought chapters. Each module consists of activities that use online data sets, satellite imagery, web-based readings, and hands-on laboratory experiments. The project comprises two separate websites, one for the instructor and one for students. The instructor's site contains the pedagogical underpinnings for each lab including teaching materials, assessment strategies, and the alignment of activities with state and national science standards. The student site provides access to all materials that students need to complete the activities or, in the case of the hands-on labs, where they access additional information to help extend their learning. There are also formative and summative questions embedded in the student webpages to help scaffold learning through the activities.

  11. Plasma production for electron acceleration by resonant plasma wave

    NASA Astrophysics Data System (ADS)

    Anania, M. P.; Biagioni, A.; Chiadroni, E.; Cianchi, A.; Croia, M.; Curcio, A.; Di Giovenale, D.; Di Pirro, G. P.; Filippi, F.; Ghigo, A.; Lollo, V.; Pella, S.; Pompili, R.; Romeo, S.; Ferrario, M.

    2016-09-01

    Plasma wakefield acceleration is the most promising acceleration technique known nowadays, able to provide very high accelerating fields (10-100 GV/m), enabling acceleration of electrons to GeV energy in few centimeter. However, the quality of the electron bunches accelerated with this technique is still not comparable with that of conventional accelerators (large energy spread, low repetition rate, and large emittance); radiofrequency-based accelerators, in fact, are limited in accelerating field (10-100 MV/m) requiring therefore hundred of meters of distances to reach the GeV energies, but can provide very bright electron bunches. To combine high brightness electron bunches from conventional accelerators and high accelerating fields reachable with plasmas could be a good compromise allowing to further accelerate high brightness electron bunches coming from LINAC while preserving electron beam quality. Following the idea of plasma wave resonant excitation driven by a train of short bunches, we have started to study the requirements in terms of plasma for SPARC_LAB (Ferrario et al., 2013 [1]). In particular here we focus on hydrogen plasma discharge, and in particular on the theoretical and numerical estimates of the ionization process which are very useful to design the discharge circuit and to evaluate the current needed to be supplied to the gas in order to have full ionization. Eventually, the current supplied to the gas simulated will be compared to that measured experimentally.

  12. Diamond Research Overview and a Model for Lab Experiments Using Oxyacetylene Torch

    NASA Technical Reports Server (NTRS)

    Roy, Rustum

    1996-01-01

    High pressure synthetic diamonds have now been a commercial product for over 40 years. Russian scientists invented the chemical vapor deposition (CVD) process 30 years ago, while the Japanese followed 10 years later and the U.S. was introduced to it 10 years after that. The new syntheses focus is on liquid and solid phase approaches. There are three CVD processes: microwave plasma, hot filament, and oxy-acetylene torch. The oxy-acetylene torch is an excellent materials synthesis lab experiment, emphasizing the simplicity of the science.

  13. Dusty plasmas

    SciTech Connect

    Jones, M.E.; Winske, D.; Keinigs, R.; Lemons, D.

    1996-05-01

    This is the final report of a three-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). The objective of this project has been to develop a fundamental understanding of dusty plasmas at the Laboratory. While dusty plasmas are found in space in galactic clouds, planetary rings, and cometary tails, and as contaminants in plasma enhanced fabrication of microelectronics, many of their properties are only partially understood. Our work has involved both theoretical analysis and self-consistent plasma simulations to understand basic properties of dusty plasmas related to equilibrium, stability, and transport. Such an understanding can improve the control and elimination of plasma dust in industrial applications and may be important in the study of planetary rings and comet dust tails. We have applied our techniques to the study of charging, dynamics, and coagulation of contaminants in plasma processing reactors for industrial etching and deposition processes and to instabilities in planetary rings and other space plasma environments. The work performed in this project has application to plasma kinetics, transport, and other classical elementary processes in plasmas as well as to plasma waves, oscillations, and instabilities.

  14. Plasma accelerators

    SciTech Connect

    Ruth, R.D.; Chen, P.

    1986-03-01

    In this paper we discuss plasma accelerators which might provide high gradient accelerating fields suitable for TeV linear colliders. In particular we discuss two types of plasma accelerators which have been proposed, the Plasma Beat Wave Accelerator and the Plasma Wake Field Accelerator. We show that the electric fields in the plasma for both schemes are very similar, and thus the dynamics of the driven beams are very similar. The differences appear in the parameters associated with the driving beams. In particular to obtain a given accelerating gradient, the Plasma Wake Field Accelerator has a higher efficiency and a lower total energy for the driving beam. Finally, we show for the Plasma Wake Field Accelerator that one can accelerate high quality low emittance beams and, in principle, obtain efficiencies and energy spreads comparable to those obtained with conventional techniques.

  15. Physiology Lab Demonstration: Glomerular Filtration Rate in a Rat.

    PubMed

    Hinojosa-Laborde, Carmen; Jespersen, Brian; Shade, Robert

    2015-01-01

    Measurements of glomerular filtration rate (GFR), and the fractional excretion of sodium (Na) and potassium (K) are critical in assessing renal function in health and disease. GFR is measured as the steady state renal clearance of inulin which is filtered at the glomerulus, but not secreted or reabsorbed along the nephron. The fractional excretion of Na and K can be determined from the concentration of Na and K in plasma and urine. The renal clearance of inulin can be demonstrated in an anesthetized animal which has catheters in the femoral artery, femoral vein and bladder. The equipment and supplies used for this procedure are those commonly available in a research core facility, and thus makes this procedure a practical means for measuring renal function. The purpose of this video is to demonstrate the procedures required to perform a lab demonstration in which renal function is assessed before and after a diuretic drug. The presented technique can be utilized to assess renal function in rat models of renal disease. PMID:26274567

  16. A new plasma source based on contact ionization

    NASA Astrophysics Data System (ADS)

    Schrittwieser, R.; Koslover, R.; Karim, R.; Rynn, N.

    1985-07-01

    A new type of plasma source is presented: A collisionless plasma is formed by producing ions on one end and electrons on the other of a cylindrical vacuum chamber in a solenoidal magnetic field. The ions are produced by contact ionization of potassium on tungsten. The source of electrons is a LaB6 plate. In the usual single-ended Q machine the elements rhenium, iridium, and platinum are tested as ionizing metals for potassium and barium.

  17. E-Labs - Learning with Authentic Data

    SciTech Connect

    Bardeen, Marjorie G.; Wayne, Mitchell

    2016-01-01

    the success teachers have had providing an opportunity for students to: • Organize and conduct authentic research. • Experience the environment of scientific collaborations. • Possibly make real contributions to a burgeoning scientific field. We've created projects that are problem-based, student driven and technology dependent. Students reach beyond classroom walls to explore data with other students and experts and share results, publishing original work to a worldwide audience. Students can discover and extend the research of other students, modeling the processes of modern, large-scale research projects. From start to finish e-Labs are student-led, teacher-guided projects. Students need only a Web browser to access computing techniques employed by professional researchers. A Project Map with milestones allows students to set the research plan rather than follow a step-by-step process common in other online projects. Most importantly, e-Labs build the learning experience around the students' own questions and let them use the very tools that scientists use. Students contribute to and access shared data, most derived from professional research databases. They use common analysis tools, store their work and use metadata to discover, replicate and confirm the research of others. This is where real scientific collaboration begins. Using online tools, students correspond with other research groups, post comments and questions, prepare summary reports, and in general participate in the part of scientific research that is often left out of classroom experiments. Teaching tools such as student and teacher logbooks, pre- and post-tests and an assessment rubric aligned with learner outcomes help teachers guide student work. Constraints on interface designs and administrative tools such as registration databases give teachers the "one-stop-shopping" they seek for multiple e-Labs. Teaching and administrative tools also allow us to track usage and assess the impact on

  18. The Work Smart Standards process at Jefferson Lab

    SciTech Connect

    Boyce, J.R.; Prior, S.; Hanson, E.; Morgan, B.

    1997-12-01

    The Thomas Jefferson National Accelerator Facility (Jefferson Lab) has developed a set of Work Smart Standards for the Lab. The effort incorporated the Lab`s performance-based contract into the Necessary and Sufficient (N and S) Standards identification process of the DOE. A rigorous protocol identified hazards in the workplace and standards that provide adequate protection of workers, public, and the environment at reasonable cost. The intensive process was a joint effort between the Lab and DOE and it required trained teams of knowledgeable experts in three fields: (1) actual required work conditions at Jefferson Lab; (2) laws, regulations, DOE directives and performance-based contracts; and (3) Environmental Health and Safety (EH and S), Rad Con, and QA. The criteria for selection of the teams, the database designed and used for the process, and lessons learned are discussed.

  19. DOSAR/CalLab Operations Manual

    SciTech Connect

    Bogard, J.S.

    2000-03-01

    The Life Sciences Division (LSD) of Oak Ridge National Laboratory (ORNL) has a long record of radiation dosimetry research, primarily using the Health Physics Research Reactor (HPRR) and the Dosimetry Applications Research (DOSAR) Program Calibration Laboratory (CalLab), referred to formerly as the Radiation Calibration Laboratory. These facilities have been used by a broad segment of the research community to perform a variety of experiments in areas including, but not limited to, radiobiology, radiation dosimeter and instrumentation development and calibration, and the testing of materials in a variety of radiation environments.

  20. Phoenix Carries Soil to Wet Chemistry Lab

    NASA Technical Reports Server (NTRS)

    2008-01-01

    This image taken by the Surface Stereo Imager on NASA's Phoenix Mars Lander shows the lander's Robotic Arm scoop positioned over the Wet Chemistry Lab delivery funnel on Sol 29, the 29th Martian day after landing, or June 24, 2008. The soil will be delivered to the instrument on Sol 30.

    This image has been enhanced to brighten the scene.

    The Phoenix Mission is led by the University of Arizona, Tucson, on behalf of NASA. Project management of the mission is by NASA's Jet Propulsion Laboratory, Pasadena, Calif. Spacecraft development is by Lockheed Martin Space Systems, Denver.

  1. Microbes to Biomes at Berkeley Lab

    SciTech Connect

    2015-10-28

    Microbes are the Earth's most abundant and diverse form of life. Berkeley Lab's Microbes to Biomes initiative -- which will take advantage of research expertise at the Joint Genome Institute, Advanced Light Source, Molecular Foundry, and the new computational science facility -- is designed to explore and reveal the interactions of microbes with one another and with their environment. Microbes power our planet’s biogeochemical cycles, provide nutrients to our plants, purify our water and are integral components in keeping the human body free of disease and may hold the key to the Earth’s future.

  2. Painless dental laser - Keith Murry in lab

    NASA Technical Reports Server (NTRS)

    2000-01-01

    NASA inventor Keith Murray checks out laser technology that promises to make painless dental lasers affordable for dentists and their patients. Developed at NASA Langley Research Center, Hampton, Va., the dual-wavelength laser can be electronically switched between the two laser frequencies important to dentists. Co-inventors of the technology are Murray, Norman Barnes, also of Langley, and Ralph Hutcheson of Scientific Materials Corp., Bozeman, Montana. The technology was originally developed for studies of atmospheric wind change. Photographed in building 1202, laser lab.

  3. The EG4 Experiment at Jefferson Lab

    SciTech Connect

    X. Zheng

    2009-07-01

    The main physics goal of the CLAS EG4 experiment at Jefferson Lab is to measure the generalized GDH sum for the proton and the neutron at very low Q2 down to Q2 = 0.015 (GeV/c)2 (inclusive channels). The same data can be used to extract asymmetries of pion electroproduction in the resonance region (exclusive channels). An overview of the experiment is presented here, as well as the analysis status of both inclusive and exclusive analyses. Some preliminary results on the single-target and the beam-target asymmetries of charged pion electroproductions are presented.

  4. Strangeness Physics with CLAS at Jefferson Lab

    SciTech Connect

    Schumacher, Reinhard

    2010-08-05

    We review recent developments in strangeness photo- and electro- production off the proton and neutron, as investigated using CLAS in Hall B at Jefferson Lab. By measuring sufficient spin observables one can decompose the reaction mechanism into elementary amplitudes. We discuss progress toward this end in recent data from CLAS, including cross sections and spin observables. We next discuss new results on the mass distribution of the {Lambda}(1405), which shows signs of being a composite meson-baryon object of mixed isospin. The work on other hyperons such as the {Xi} resonances will be mentioned, and future prospects for the CLAS program outlined.

  5. Strangeness Physics with CLAS at Jefferson Lab

    SciTech Connect

    Reinhard Schumacher

    2010-08-01

    We review recent developments in strangeness photo- and electro- production off the proton and neutron, as investigated using CLAS in Hall B at Jefferson Lab. By measuring sufficient spin observables one can decompose the reaction mechanism into elementary amplitudes. We discuss progress toward this end in recent data from CLAS, including cross sections and spin observables. We next discuss new results on the mass distribution of the Lambda(1405), which shows signs of being a composite meson-baryon object of mixed isospin. The work on other hyperons such as the Xi resonances will be mentioned, and future prospects for the CLAS program outlined.

  6. The Mysterious Death: An HPLC Lab Experiment. An Undergraduate Forensic Lab

    ERIC Educational Resources Information Center

    Beussman, Douglas J.

    2007-01-01

    A high-performance liquid chromatography (HPLC) laboratory experiment based on the separation of four prescription drugs (disopyramide, lidocaine, procainamide, and quinidine) is presented. The experiment is set within the forensic science context of the discovery of a patient's mysterious death where a drug overdose is suspected. Each lab group…

  7. WetLab-2: Wet Lab RNA SmartCycler Providing PCR Capability on ISS

    NASA Technical Reports Server (NTRS)

    Parra, Macarena; Schonfeld, Julie

    2015-01-01

    The WetLab-2 system will provide sample preparation and qRT-PCR analysis on-board the ISS, a capability to enable using the ISS as a real laboratory. The system will be validated on SpX-7, and is planned for its first PI use on SpX-9.

  8. Using round table labs to complement didactic lectures and experimental labs.

    PubMed

    Nekvasil, N P

    1998-06-01

    In an effort to teach the volume of material needed by physiology students as well as to enhance the student's understanding of physiological mechanisms, a combination of teaching methods is being used at the undergraduate level. Didactic lectures are used to convey the mass of information needed, experimental labs are used to aid the student in visualizing concepts, and situational labs [called round table labs (RTLs) here] are used to provide an opportunity for the student to learn, in a risk-free setting, how to answer application questions. The RTLs utilize discussion, writing, verbal communication, and analytic thinking. The major emphasis of the RTLs is on the integrative nature of physiology. Use of the RTLs bridges, the gap among the facts learned in the didactic lecture, the hands-on learning of the experimental lab, and the need to be able to apply what is being learned. Using this combination facilitates student learning such that the student reaches a level of proficiency with the subject beyond that which can be attained with the more traditional lecture-exam format. PMID:9841568

  9. OpenLabNotes--An Electronic Laboratory Notebook Extension for OpenLabFramework.

    PubMed

    List, Markus; Franz, Michael; Tan, Qihua; Mollenhauer, Jan; Baumbach, Jan

    2015-01-01

    Electronic laboratory notebooks (ELNs) are more accessible and reliable than their paper based alternatives and thus find widespread adoption. While a large number of commercial products is available, small- to mid-sized laboratories can often not afford the costs or are concerned about the longevity of the providers. Turning towards free alternatives, however, raises questions about data protection, which are not sufficiently addressed by available solutions. To serve as legal documents, ELNs must prevent scientific fraud through technical means such as digital signatures. It would also be advantageous if an ELN was integrated with a laboratory information management system to allow for a comprehensive documentation of experimental work including the location of samples that were used in a particular experiment. Here, we present OpenLabNotes, which adds state-of-the-art ELN capabilities to OpenLabFramework, a powerful and flexible laboratory information management system. In contrast to comparable solutions, it allows to protect the intellectual property of its users by offering data protection with digital signatures. OpenLabNotes effectively closes the gap between research documentation and sample management, thus making Open-LabFramework more attractive for laboratories that seek to increase productivity through electronic data management. PMID:26673790

  10. The Design of NetSecLab: A Small Competition-Based Network Security Lab

    ERIC Educational Resources Information Center

    Lee, C. P.; Uluagac, A. S.; Fairbanks, K. D.; Copeland, J. A.

    2011-01-01

    This paper describes a competition-style of exercise to teach system and network security and to reinforce themes taught in class. The exercise, called NetSecLab, is conducted on a closed network with student-formed teams, each with their own Linux system to defend and from which to launch attacks. Students are expected to learn how to: 1) install…