Sample records for two-fold serial dilution

  1. 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.

  2. Microfluidic serial dilution ladder.

    PubMed

    Ahrar, Siavash; Hwang, Michelle; Duncan, Philip N; Hui, Elliot E

    2014-01-01

    Serial dilution is a fundamental procedure that is common to a large number of laboratory protocols. Automation of serial dilution is thus a valuable component for lab-on-a-chip systems. While a handful of different microfluidic strategies for serial dilution have been reported, approaches based on continuous flow mixing inherently consume larger amounts of sample volume and chip real estate. We employ valve-driven circulatory mixing to address these issues and also introduce a novel device structure to store each stage of the dilution process. The dilution strategy is based on sequentially mixing the rungs of a ladder structure. We demonstrate a 7-stage series of 1?:?1 dilutions with R(2) equal to 0.995 in an active device area of 1 cm(2). PMID:24231765

  3. Serial Dilution & Parts Per Million

    NSDL National Science Digital Library

    This activity provides a real world application of the ATEEC Recommended Core Curriculum. This curriculum was identified by ATEEC Fellows as necessary preparation for environmental technology occupation. In this activity, students will experiment with serial dilution and parts per million. At the end of the activity, students will understand how to perform lab procedures, translate real world problems into math relationship, apply ratios and proportions to solve problems, manipulate and substitute variables to solve formulas, and demonstrate safe practices. The activity is appropriate for a high school biology or chemistry class.

  4. Dispersion serial dilution methods using the gradient diluter device.

    PubMed

    Walling, Leslie; Schulz, Craig; Johnson, Michael

    2012-12-01

    A solute aspirated into a prefilled tube of diluent undergoes a dilution effect known as dispersion. Traditionally the effects of dispersion have been considered a negative consequence of using liquid-filled fixed-tip liquid handlers. We present a novel device and technique that utilizes the effects of dispersion to the benefit of making dilutions. The device known as the Gradient Diluter extends the dilution range of practical serial dilutions to six orders of magnitude in final volumes as low as 10??L. Presented are the device, dispersion methods, and validation tests using fluorescence detection of sulforhodamine and the high-performance liquid chromatography/ultraviolet detection of furosemide. In addition, a T-cell inhibition assay of a relevant downstream protein is used to demonstrate IC(50) curves made with the Gradient Diluter compare favorably with those generated by hand. PMID:22364546

  5. Bayesian analysis of serial dilution assays.

    PubMed

    Gelman, Andrew; Chew, Ginger L; Shnaidman, Michael

    2004-06-01

    In a serial dilution assay, the concentration of a compound is estimated by combining measurements of several different dilutions of an unknown sample. The relation between concentration and measurement is nonlinear and heteroscedastic, and so it is not appropriate to weight these measurements equally. In the standard existing approach for analysis of these data, a large proportion of the measurements are discarded as being above or below detection limits. We present a Bayesian method for jointly estimating the calibration curve and the unknown concentrations using all the data. Compared to the existing method, our estimates have much lower standard errors and give estimates even when all the measurements are outside the "detection limits." We evaluate our method empirically using laboratory data on cockroach allergens measured in house dust samples. Our estimates are much more accurate than those obtained using the usual approach. In addition, we develop a method for determining the "effective weight" attached to each measurement, based on a local linearization of the estimated model. The effective weight can give insight into the information conveyed by each data point and suggests potential improvements in design of serial dilution experiments. PMID:15180666

  6. Use of sediment serial dilution series to establish biological effect levels and clean-up goals

    SciTech Connect

    Timmer, E.; DeLong, T.; Millard, J.; Dobroski, C. [Roy F. Weston, Inc., West Chester, PA (United States)

    1995-12-31

    A sediment serial dilution study was used to determine biological effect levels for two freshwater invertebrates, Chironomus tentans and Hyalella azteca. The sediments for the test were collected from a New England brook which contained elevated levels of lead and polychlorinated aromatic hydrocarbons. The objective of the sediment dilution study was two-fold: (1 ) to provide a site-specific estimation of biological effect levels, thus reducing uncertainties associated with using literature-based values, and (2) to establish clean-up goals specific to this freshwater system.

  7. Implementing Inquiry-Based Learning in Teaching Serial Dilutions

    ERIC Educational Resources Information Center

    Walker, Candace L.; McGill, Michael T.; Buikema, Arthur L., Jr.; Stevens, Ann M.

    2008-01-01

    The 5E model of inquiry-based learning was incorporated into a sophomore-level microbiology laboratory to increase student understanding of serial dilutions, a concept that is often difficult for most students to comprehend. Quantitative and qualitative assessments were conducted during the semester to determine the value of this approach for…

  8. Serial dilution via surface energy trap-assisted magnetic droplet manipulation.

    PubMed

    Zhang, Yi; Shin, Dong Jin; Wang, Tza-Huei

    2013-12-21

    This paper demonstrates a facile method of generating precise serial dilutions in the form of droplets on an open surface platform. The method relies on the use of surface energy traps (SETs), etched areas of high surface energy on a Teflon coated glass substrate, to assist in the magnetic manipulation of droplets to meter and dispense liquid of defined volumes for the preparation of serial dilutions. The volume of the dispensed liquid can be precisely controlled by the size of the SETs, facilitating generation of concentration profiles of high linearity. We have applied this approach to the generation of serial dilutions of antibiotics for anti-microbial susceptibility testing (AST). PMID:24162777

  9. Laboratory 1: Bacterial Abundance Method 1: SERIAL DILUTION-AGAR PLATING TO QUANTITATE VIABLE CELLS

    E-print Network

    Vallino, Joseph J.

    Laboratory 1: Bacterial Abundance Method 1: SERIAL DILUTION- AGAR PLATING TO QUANTITATE VIABLE) and spread with an ethanol-flamed glass rod. Cool glass rod on agar plat before spreading. Incubate the five

  10. Standardisation and comparison of serial dilution and single dilution enzyme linked immunosorbent assay (ELISA) using different antigenic preparations of the Babesia (Theileria) equi parasite

    Microsoft Academic Search

    Sanjay Kumar; Yogesh Kumar; Dharam V. Malhotra; Shruti Dhar; Anil K. Nichani

    2003-01-01

    Serial dilution and single dilution enzyme linked immunosorbent assays (ELISA) were standardised and their sensitivity and specificity were compared for serodiagnosis of Babesia equi infection. The antibody titres of 24 donkey sera of known identity were determined separately by serial dilution ELISA using three different B. equi antigens namely whole merozoite (WM), cell membrane (CM) and high speed supernatant (HSS).

  11. Biometrics 60, 407417 Bayesian Analysis of Serial Dilution Assays

    E-print Network

    Gelman, Andrew

    laboratory data on cockroach allergens measured in house dust samples. Our estimates are much more accurate of measurements versus dilutions from a single plate (assays of the cockroach allergen Bla g1), for the standards

  12. Protection of Mice from Tularemia Infection with Ultra-Low, Serial Agitated Dilutions Prepared from Francisella tularensis Infected Tissue 1

    Microsoft Academic Search

    WAYNE B. JONAS; DEBRA K. DILLNER

    Reports of immunomodulation with serial agitated dilutions (SADs) of cytokines, hormones, minerals, and whole tissue led to this inquiry as to whether exposure to a complex SAD preparation produced from Fran- cisella tularensis- infected mice could alter the immune response and the ef- fects of subsequent challenge with this pathogen in vivo. Six SAD prepara- tions of reticuloendothelial tissue from

  13. Chronological Life Span Method Serial Dilutions and Pin Stamps Materials: Sterile 96-well plates, YPD liquid medium, YPD-G418 agar plates (~20 ml, cured on bench

    E-print Network

    Aris, John P.

    Chronological Life Span Method ­ Serial Dilutions and Pin Stamps Materials: Sterile 96-well plates reservoir, multichannel pipetter. 1. Use a 96-well plate for dilutions and pin stamping. Use 6 wells.2 X 10-4 4. Use pin stamp to `stamp' diluted samples onto YPD-G418 plates. Dip pin stamp in 100

  14. Differences in Median Ultraviolet Light Transmissions of Serial Homeopathic Dilutions of Copper Sulfate, Hypericum perforatum, and Sulfur

    PubMed Central

    Klein, Sabine D.; Sandig, Annegret; Baumgartner, Stephan; Wolf, Ursula

    2013-01-01

    Homeopathic remedies are produced by potentising, that is, the serial logarithmic dilution and succussion of a mother tincture. Techniques like ultraviolet spectroscopy, nuclear magnetic resonance, calorimetry, or thermoluminescence have been used to investigate their physical properties. In this study, homeopathic centesimal (c) potencies (6c to 30c) of copper sulfate, Hypericum perforatum, and sulfur as well as succussed water controls were prepared. Samples of these preparations were exposed to external physical factors like heat, pressure, ultraviolet radiation, or electromagnetic fields to mimic possible everyday storage conditions. The median transmissions from 190?nm to 340?nm and 220?nm to 340?nm were determined by ultraviolet light spectroscopy on five measurement days distributed over several months. Transmissions of controls and potencies of sulfur differed significantly on two of five measurement days and after exposure to physical factors. Transmissions of potencies exposed to ultraviolet light and unexposed potencies of copper sulfate and Hypericum perforatum differed significantly. Potency levels 6c to 30c were also compared, and wavelike patterns of higher and lower transmissions were found. The Kruskal-Wallis test yielded significant differences for the potency levels of all three substances. Aiming at understanding the physical properties of homeopathic preparations, this study confirmed and expanded the findings of previous studies. PMID:23401712

  15. Serial Wars

    ERIC Educational Resources Information Center

    Van Orsdel, Lee C.; Born, Kathleen

    2007-01-01

    In a year filled with drama and hyperbole, the serials marketplace churned toward a future whose shape is the subject of fierce debate. Forecasts from commercial publishers touting collapse and disaster seemed oddly out of sync with the profits they enjoyed--around 25 percent on average. Nevertheless, in a market where prices continued to rise and…

  16. Sea Urchin Embryology: Simple Dilutions 2

    NSDL National Science Digital Library

    PhD David Epel (Stanford U. Hopkins Marine Station)

    2006-12-20

    SUMMARY: Building on what was learned in SIMPLE DILUTION, students will determine the best dilution strategy to solve a dilution problem. 1. Students are given an unknown dye solution and asked to determine its concentration by comparing it with standards they create. 2. Repeated "serial" dilutions will be necessary to determine accurate concentration readings. 3. Varying the color of the filters and the path length will aid in seeing lower concentrations.

  17. The two-fold singularity of nonsmooth flows: Leading order dynamics in n-dimensions

    NASA Astrophysics Data System (ADS)

    Colombo, Alessandro; Jeffrey, Mike R.

    2013-11-01

    A discontinuity in a system of ordinary differential equations can create a flow that slides along the discontinuity locus. Prior to sliding, the flow may have collapsed onto the discontinuity, making the reverse flow non-unique, as happens when dry-friction causes objects to stick. Alternatively, a flow may slide along the discontinuity before escaping it at some indeterminable time, implying non-uniqueness in forward time. At a two-fold singularity these two behaviours are brought together, so that a single point may have multiple possible futures as well as histories. Two-folds are a generic consequence of discontinuities in three or more dimensions, and play an important role in both local and global dynamics. Despite this, until now nothing was known about two-fold singularities in systems of more than 3 dimensions. Here, the normal form of the two-fold is extended to higher dimensions, where we show that much of its lower dimensional dynamics survives.

  18. Biomathematical modeling for diluted drugs.

    PubMed

    Chattopadhyay, S

    2003-07-01

    Several workers have proven that succussed ultra high dilution of a drug molecule in water or alcoholic medium, even exceeding Avogadro number, can bring forth noticeable physiological changes of an organism. Homeopathic drugs are prepared by dissolving such drug ingredients in distilled water and then the solution is centesimally diluted serially by ethanol. A mathematical model has been proposed by the present worker, which explains why the drug does not become non-molecular even in ultra-high dilution. This is due to loss of homogeneity in the solution, caused by increase of dielectric constant of the medium during the process of potentization. Facilitated binding of the drug molecules with minute physiologically important protein factors may be the cause of visible physiological alterations. PMID:12781641

  19. HIPPI/Serial-HIPPI

    SciTech Connect

    Tolmie, D.E. (Los Alamos National Lab., NM (United States)); Halvorson, M.G. (Digital Equipment Corp., Los Alamos, NM (United States))

    1991-01-01

    The High-Performance Parallel Interface (HIPPI) is a simple high-performance, point-to-point channel for transmitting digital data at peak data rates of 800 or 1600 Mbit/S. The transmission distance between data processing equipment using copper cabling can be up to 25 meters. This distance may be increased by using a Serial-HIPPI extender. This paper describes the HIPPI channel, the choices considered for a serial extender, and the resulting agreement for the Serial-HIPPI specification. 5 refs., 4 figs.

  20. Serial floating point formatter

    SciTech Connect

    Peterson, R. D.; Penner, W. A.

    1985-11-12

    A floating point formatter for changing fixed point serial digital data, such as that received by a seismic data acquisition system, is disclosed wherein fixed point serial digital data is received and scaled to remove any bias added by preamplification. The scaled data is shifted a predetermined number of bits and a resulting exponent is calculated. The shifted data signal and corresponding exponent are combined and further scaled to permit stacking the data without exceeding the system capacity.

  1. L e t t e r A two-fold interpenetrated three-dimensional cobalt(II) complex with

    E-print Network

    Gao, Song

    residue. The temperature dependence of the magnetic susceptibility for complex 1 is shown in Fig. 3(II) coordination polymer, Co(4,4º- was constructed using dicyanamide and 4,4º-bpy)[N(CN) 2 ] 2 , bipyridine bridges; it consists of two-fold interpenetrated a-Po- like networks. The study of inorganic coordination polymers

  2. Serial analysis of cereals

    Microsoft Academic Search

    Jessica F White; Toni Pacey-Miller; Allison C Crawford; Peter C Bundock; Giovanni M Cordeiro; Robert J Henry

    2005-01-01

    Serial Analysis of Gene Expression (SAGE) is a technique that allows genome-wide expression studies based on the sequencing of unique gene tags. This method produces a comprehensive and quantitative picture of an RNA transcript population. The principle that a short nucleotide sequence, or tag, can effectively identify the original gene transcript from whence it came, allows these tags to be

  3. Serial Services 1992.

    ERIC Educational Resources Information Center

    Shroyer, Andrew; Nanna, Laura

    1992-01-01

    This 1992 price index for serial services presents data on the number of titles, average price, percent of price change, and price indexed to 1977 for the following areas: business; general and humanities; law; science and technology; social sciences; U.S. documents; and H.W. Wilson services. (MES)

  4. Management of Serials in Libraries.

    ERIC Educational Resources Information Center

    Nisonger, Thomas E.

    This volume reviews current options for handling serials problems and clarifies fundamental issues in one of the greatest challenges confronting today's library and information science professionals. Focusing on the management of serials in libraries and the role of serials in scholarly communications, this book combines descriptive and…

  5. Detecting Nonlinear Serial Dependence

    Microsoft Academic Search

    Douglas M. Patterson; Richard A. Ashley

    \\u000a There are many statistical tests for nonlinear serial dependence in the literature. Some focus on a particular property characteristic\\u000a of nonlinear processes, such as conditional heteroskedasticity; some focus on a particular parametric family of models, as\\u000a in the way the Tsay test considers quadratic models. Others, such as the Hinich tests, focus on particular moments. Still\\u000a others, such as the

  6. The Effect of Dilution on the Structure of Microbial Communities

    NASA Technical Reports Server (NTRS)

    Mills, Aaron L.

    2000-01-01

    To determine how dilution of microbial communities affects the diversity of the diluted assemblage a series of numerical simulations were conducted that determined the theoretical change in diversity, richness, and evenness of the community with serial dilution. The results of the simulation suggested that the effects are non linear with a high degree of dependence on the initial evenness of the community being diluted. A series of incubation experiments using a range of dilutions of raw sewage as an inoculum into sterile sewage was used for comparison to the simulations. The diluted communities were maintained in batch fed reactors (three day retention time) for nine days. The communities were harvested and examined by conventional plating and by molecular analysis of the whole-community DNA using AFLP and T-RFLP. Additional, CLPP analysis was also applied. The effects on richness predicted by the numerical simulations were confirmed by the analyses used. The diluted communities fell into three groups, a low dilution, intermediate dilution, and high dilution group, which corresponded well with the groupings obtained for community richness in simulation. The grouping demonstrated the non-linear nature of dilution of whole communities. Furthermore, the results implied that the undiluted community consisted of a few dominant types accompanied by a number of rare (low abundance) types as is typical in unevenly distributed communities.

  7. Optimal Storage Allocation for Serial

    E-print Network

    Yechiali, Uri

    Optimal Storage Allocation for Serial Haim Mendelson, Joseph S. Pliskin, and Uri Yechiali Tel Aviv reside on a direct-access storage device in which storage space is limited. Records are added allocating storage space to the files. Key Words and Phrases: serial files, storage allocation

  8. Controller design for serial processes

    Microsoft Academic Search

    Audun Faanes; Sigurd Skogestad

    2005-01-01

    In this paper, we aim at obtaining insight into how a multivariable feedback controller works, with special attention to serial processes. Serial processes are important in the process industry, and the structure of this process makes it simple to classify the different elements of the multivariable controller.In particular, we focus on the difference between the feedforward and feedback parts of

  9. Serial Position Learning in Honeybees

    Microsoft Academic Search

    Randolf Menzel; Thomas Burne

    2009-01-01

    Learning of stimulus sequences is considered as a characteristic feature of episodic memory since it contains not only a particular item but also the experience of preceding and following events. In sensorimotor tasks resembling navigational performance, the serial order of objects is intimately connected with spatial order. Mammals and birds develop episodic(-like) memory in serial spatio-temporal tasks, and the honeybee

  10. Serially Concatenated IRA Codes

    E-print Network

    Cheng, Taikun; Belzer, Benjamin J

    2007-01-01

    We address the error floor problem of low-density parity check (LDPC) codes on the binary-input additive white Gaussian noise (AWGN) channel, by constructing a serially concatenated code consisting of two systematic irregular repeat accumulate (IRA) component codes connected by an interleaver. The interleaver is designed to prevent stopping-set error events in one of the IRA codes from propagating into stopping set events of the other code. Simulations with two 128-bit rate 0.707 IRA component codes show that the proposed architecture achieves a much lower error floor at higher SNRs, compared to a 16384-bit rate 1/2 IRA code, but incurs an SNR penalty of about 2 dB at low to medium SNRs. Experiments indicate that the SNR penalty can be reduced at larger blocklengths.

  11. Serial Code Optimization

    NSDL National Science Digital Library

    This guide presents the main features of serial optimisation for computationally intensive codes with a focus on the HECToR computing resources. From a user point of view, two main avenues can be followed when trying to optimise an application. One type of optimisations DO NOT involve modifying the source code (modification may not be desirable); optimisation consists of searching for the best compiler, set of flags and libraries. Another type of optimisations DO involve modifying the source code; in the first instance the programmer must evaluate if a new algorithm is necessary, followed by writing or rewriting optimised code. According to the these choices this guide presents optimisation as a problem of compiler and library selection, followed by a presentation of the key factors that must be considered when writing numerically intensive code.

  12. Serial Replica Exchange

    PubMed Central

    Hagen, Morten; Kim, Byungchan; Liu, Pu; Friesner, Richard A.; Berne, B. J.

    2009-01-01

    Parallel tempering (or the replica exchange method (REM)) is a powerful method for speeding up the sampling of conformational states of systems with rough energy landscapes, like proteins, where stable conformational states can be separated by large energy barriers. The usual implementation of the REM is performed on local computer clusters (or parallel processors) where the different replicas must be run synchronously. Here, we present serial replica exchange (SREM), a method that is equivalent to the standard REM in terms of efficiency yet runs asynchronously on a distributed network of computers. A second advantage is the method’s greatly enhanced fault tolerance, which enables the study of biological systems on worldwide distributed computing environments, such as Folding@Home.1 For proof of concept, we apply the SREM to a single alanine dipeptide molecule in explicit water. We show that the SREM reproduces the thermodynamic and structural properties determined by the REM. PMID:17249714

  13. A bit serial sequential circuit

    NASA Technical Reports Server (NTRS)

    Hu, S.; Whitaker, S.

    1990-01-01

    Normally a sequential circuit with n state variables consists of n unique hardware realizations, one for each state variable. All variables are processed in parallel. This paper introduces a new sequential circuit architecture that allows the state variables to be realized in a serial manner using only one next state logic circuit. The action of processing the state variables in a serial manner has never been addressed before. This paper presents a general design procedure for circuit construction and initialization. Utilizing pass transistors to form the combinational next state forming logic in synchronous sequential machines, a bit serial state machine can be realized with a single NMOS pass transistor network connected to shift registers. The bit serial state machine occupies less area than other realizations which perform parallel operations. Moreover, the logical circuit of the bit serial state machine can be modified by simply changing the circuit input matrix to develop an adaptive state machine.

  14. Lab 5: Serial Communication This lab introduces serial communication. Students will observe how serial communication

    E-print Network

    Wedeward, Kevin

    will observe how serial communication with the Arduino can help with troubleshooting and reading sensor data. Materials 1) Arduino Uno 2) Makeblock Shield 3) IR Reciever Module 4) IR Remote 5) 1× RJ25 Cable 6) Wires Arduino through the USB cable. First, the serial communication needs to be initialized in the void setup

  15. Bit-serial neuroprocessor architecture

    NASA Technical Reports Server (NTRS)

    Tawel, Raoul (Inventor)

    2001-01-01

    A neuroprocessor architecture employs a combination of bit-serial and serial-parallel techniques for implementing the neurons of the neuroprocessor. The neuroprocessor architecture includes a neural module containing a pool of neurons, a global controller, a sigmoid activation ROM look-up-table, a plurality of neuron state registers, and a synaptic weight RAM. The neuroprocessor reduces the number of neurons required to perform the task by time multiplexing groups of neurons from a fixed pool of neurons to achieve the successive hidden layers of a recurrent network topology.

  16. Is serial homicide really increasing?

    PubMed

    Schlesinger, L B

    2001-01-01

    Close examination of the available crime data reveals little scientific support for the widely held belief that serial homicide is frequent and increasing. The author argues that the dramatic changes in homicide clearance rates, incidence of murders with unknown motives, and victim gender data point to a likely increase, not in serial murder, but in contract murder. This type of killing appears to be having a significant impact on society; yet there has been a complete absence of forensic psychiatric study of this crime, a circumstance that needs to change. PMID:11592456

  17. The International Serials Data System in 1978

    ERIC Educational Resources Information Center

    Bradley, Isabel

    1978-01-01

    An overview of the system begun in 1972 by UNESCO to develop and maintain an international register of serials, facilitate retrieval of scientific, and technical information in serials, and establish a communications network between libraries, publishers and international organizations. (JAB)

  18. The Serial Process in Visual Search

    ERIC Educational Resources Information Center

    Gilden, David L.; Thornton, Thomas L.; Marusich, Laura R.

    2010-01-01

    The conditions for serial search are described. A multiple target search methodology (Thornton & Gilden, 2007) is used to home in on the simplest target/distractor contrast that effectively mandates a serial scheduling of attentional resources. It is found that serial search is required when (a) targets and distractors are mirror twins, and (b)…

  19. Serial port data communication using MODBUS protocol

    Microsoft Academic Search

    Saptarshi Naskar; Krishnendu Basuli; Samar Sen Sarma

    2008-01-01

    Serial communication is the process of sending data sequentially one bit at a time, over a communication channel or computer bus [5,6,7]. RS-232 is a standard for serial binary data transfer between a data terminal equipment (DTE) and a data circuit-terminating equipment (DCE), commonly used in computer serial ports.

  20. Serial Killers with Military Experience: Applying Learning Theory to Serial Murder

    Microsoft Academic Search

    Tammy Castle; Christopher Hensley

    2002-01-01

    Scholars have endeavored to study the motivation and causality behind serial murder by researching biological, psychological, and sociological variables. Some of these studies have provided support for the relationship between these variables and serial murder. However, the study of serial murder continues to be an exploratory rather than explanatory research topic. This article examines the possible link between serial killers

  1. Comparison of MARC Serials, NSDP, and ISBD-S

    ERIC Educational Resources Information Center

    Pulsifier, Josephine S.

    1973-01-01

    The specifications for serial records of the MARC Serials Distribution Service, the National Serials Data Program, and the International Standard Bibliographic Description for Serials are discussed. Both data content and, where applicable, machine format are analyzed. (4 references) (Author)

  2. Comparing single and serial homicide offenses.

    PubMed

    Kraemer, Gretchen W; Lord, Wayne D; Heilbrun, Kirk

    2004-01-01

    Serial homicide has attracted much attention, but little empirical scientific investigation. This exploratory study reports demographic information on a large sample of serial homicide offenders (157 offenders, 608 victims), and compares a subsample of serial homicide offenses with a control group of single homicide offenses. Results show that serial homicide offenders target more women than men, and kill more strangers than family or friends. Single homicide offenders kill men and women in equal frequency, but kill family and friends more often than strangers. Serial homicide offenders kill for apparent sexual motivation more often than for any other reason, while single homicide offenders kill most often out of anger. PMID:15211555

  3. Serial Position Learning in Honeybees

    PubMed Central

    Menzel, Randolf

    2009-01-01

    Learning of stimulus sequences is considered as a characteristic feature of episodic memory since it contains not only a particular item but also the experience of preceding and following events. In sensorimotor tasks resembling navigational performance, the serial order of objects is intimately connected with spatial order. Mammals and birds develop episodic(-like) memory in serial spatio-temporal tasks, and the honeybee learns spatio-temporal order when navigating between the nest and a food source. Here I examine the structure of the bees’ memory for a combined spatio-temporal task. I ask whether discrimination and generalization are based solely on simple forms of stimulus-reward learning or whether they require sequential configurations. Animals were trained to fly either left or right in a continuous T-maze. The correct choice was signaled by the sequence of colors (blue, yellow) at four positions in the access arm. If only one of the possible 4 signals is shown (either blue or yellow), the rank order of position salience is 1, 2 and 3 (numbered from T-junction). No learning is found if the signal appears at position 4. If two signals are shown, differences at positions 1 and 2 are learned best, those at position 3 at a low level, and those at position 4 not at all. If three or more signals are shown these results are corroborated. This salience rank order again appeared in transfer tests, but additional configural phenomena emerged. Most of the results can be explained with a simple model based on the assumption that the four positions are equipped with different salience scores and that these add up independently. However, deviations from the model are interpreted by assuming stimulus configuration of sequential patterns. It is concluded that, under the conditions chosen, bees rely most strongly on memories developed during simple forms of associative reward learning, but memories of configural serial patterns contribute, too. PMID:19259265

  4. Nanoflow electrospinning serial femtosecond crystallography

    PubMed Central

    Sierra, Raymond G.; Laksmono, Hartawan; Kern, Jan; Tran, Rosalie; Hattne, Johan; Alonso-Mori, Roberto; Lassalle-Kaiser, Benedikt; Glöckner, Carina; Hellmich, Julia; Schafer, Donald W.; Echols, Nathaniel; Gildea, Richard J.; Grosse-Kunstleve, Ralf W.; Sellberg, Jonas; McQueen, Trevor A.; Fry, Alan R.; Messerschmidt, Marc M.; Miahnahri, Alan; Seibert, M. Marvin; Hampton, Christina Y.; Starodub, Dmitri; Loh, N. Duane; Sokaras, Dimosthenis; Weng, Tsu-Chien; Zwart, Petrus H.; Glatzel, Pieter; Milathianaki, Despina; White, William E.; Adams, Paul D.; Williams, Garth J.; Boutet, Sébastien; Zouni, Athina; Messinger, Johannes; Sauter, Nicholas K.; Bergmann, Uwe; Yano, Junko; Yachandra, Vittal K.; Bogan, Michael J.

    2012-01-01

    An electrospun liquid microjet has been developed that delivers protein microcrystal suspensions at flow rates of 0.14–3.1?µl?min?1 to perform serial femtosecond crystallography (SFX) studies with X-ray lasers. Thermolysin microcrystals flowed at 0.17?µl?min?1 and diffracted to beyond 4?Å resolution, producing 14?000 indexable diffraction patterns, or four per second, from 140?µg of protein. Nanoflow electrospinning extends SFX to biological samples that necessitate minimal sample consumption. PMID:23090408

  5. Advances in Serial MSK modems

    NASA Technical Reports Server (NTRS)

    Ryan, C. R.

    1981-01-01

    Lumped element as well as distributed element networks are used in the Serial MSK (SMSK) modems, for 20-1000 Mbps data rate range applications, whose design and performance characteristics are described. It is noted that the use of baseband conversion filters for the modulator yields good performance in many applications, with typical matched filter designs (structurally simple to implement) causing less than 0.5 dB bit error rate performance degradation. The SMSK modem technique begins with the use of a biphased shift-keyed modulator, and then employs passive filters to obtain the MSK signal.

  6. Serial turbo trellis coded modulation using a serially concatenated coder

    NASA Technical Reports Server (NTRS)

    Divsalar, Dariush (Inventor); Dolinar, Samuel J. (Inventor); Pollara, Fabrizio (Inventor)

    2010-01-01

    Serial concatenated trellis coded modulation (SCTCM) includes an outer coder, an interleaver, a recursive inner coder and a mapping element. The outer coder receives data to be coded and produces outer coded data. The interleaver permutes the outer coded data to produce interleaved data. The recursive inner coder codes the interleaved data to produce inner coded data. The mapping element maps the inner coded data to a symbol. The recursive inner coder has a structure which facilitates iterative decoding of the symbols at a decoder system. The recursive inner coder and the mapping element are selected to maximize the effective free Euclidean distance of a trellis coded modulator formed from the recursive inner coder and the mapping element. The decoder system includes a demodulation unit, an inner SISO (soft-input soft-output) decoder, a deinterleaver, an outer SISO decoder, and an interleaver.

  7. Serial turbo trellis coded modulation using a serially concatenated coder

    NASA Technical Reports Server (NTRS)

    Divsalar, Dariush (Inventor); Dolinar, Samuel J. (Inventor); Pollara, Fabrizio (Inventor)

    2011-01-01

    Serial concatenated trellis coded modulation (SCTCM) includes an outer coder, an interleaver, a recursive inner coder and a mapping element. The outer coder receives data to be coded and produces outer coded data. The interleaver permutes the outer coded data to produce interleaved data. The recursive inner coder codes the interleaved data to produce inner coded data. The mapping element maps the inner coded data to a symbol. The recursive inner coder has a structure which facilitates iterative decoding of the symbols at a decoder system. The recursive inner coder and the mapping element are selected to maximize the effective free Euclidean distance of a trellis coded modulator formed from the recursive inner coder and the mapping element. The decoder system includes a demodulation unit, an inner SISO (soft-input soft-output) decoder, a deinterleaver, an outer SISO decoder, and an interleaver.

  8. Serial Arrival Prediction Coding; A Serial Predictive Model for Use by System Designers

    ERIC Educational Resources Information Center

    Grosch, Audrey N.

    1976-01-01

    Describes a model conceived as an aid to the designer of serials management systems for structuring the serial arrival prediction, check-in, and claiming functions of these systems. The model is described with examples of its application to known serial issue arrival cases in a table of examples. (Author)

  9. 14th North Carolina Serials Conference: Serials Services in the Eye of the Information Storm

    Microsoft Academic Search

    Barbara A. Gushrowski; Cynthia E. Saylor; Susan F. Whitt

    2005-01-01

    Purpose – Conference report from a state serials conference which explored changing roles of serials as products and technical service librarians reviewing several key sessions. Design\\/methodology\\/approach – Coverage and description of papers and presentations at this meeting with highlights. Findings – Varied with the session but conclusions indicate that electronic serials are posing increasing challenges to the selection, processing and

  10. Dilution, Concentration, and Flotation

    ERIC Educational Resources Information Center

    Liang, Ling; Schmuckler, Joseph S.

    2004-01-01

    As both classroom teaching practice and literature show, many students have difficulties learning science concepts such as density. Here are some investigations that identify the relationship between density and floating through experimenting with successive dilution of a liquid, or the systematic change of concentration of a saltwater solution.…

  11. Isotope dilution mass spectrometry

    Microsoft Academic Search

    Klaus G. Heumann

    1992-01-01

    In the past isotope dilution mass spectrometry (IDMS) has usually been applied using the formation of positive thermal ions of metals. Especially in calibrating other analytical methods and for the certification of standard reference materials this type of IDMS became a routine method. Today, the progress in this field lies in the determination of ultra trace amounts of elements, e.g.

  12. 950 keV X-Band Linac For Material Recognition Using Two-Fold Scintillator Detector As A Concept Of Dual-Energy X-Ray System

    SciTech Connect

    Lee, Kiwoo; Natsui, Takuya; Hirai, Shunsuke; Uesaka, Mitsuru [University of Tokyo, 2-22 Tokai-mura, Ibaraki-ken 319-1188 (Japan); Hashimoto, Eiko [Japan atomic energy agency (JAEA), 4-49 Muramatsu Tokai-mura, Ibaraki-ken (Japan)

    2011-06-01

    One of the advantages of applying X-band linear accelerator (Linac) is the compact size of the whole system. That shows us the possibility of on-site system such as the custom inspection system in an airport. As X-ray source, we have developed X-band Linac and achieved maximum X-ray energy 950 keV using the low power magnetron (250 kW) in 2 {mu}s pulse length. The whole size of the Linac system is 1x1x1 m{sup 3}. That is realized by introducing X-band system. In addition, we have designed two-fold scintillator detector in dual energy X-ray concept. Monte carlo N-particle transport (MCNP) code was used to make up sensor part of the design with two scintillators, CsI and CdWO4. The custom inspection system is composed of two equipments: 950 keV X-band Linac and two-fold scintillator and they are operated simulating real situation such as baggage check in an airport. We will show you the results of experiment which was performed with metal samples: iron and lead as targets in several conditions.

  13. A two-fold interpenetrating 3D metal-organic framework material constructed from helical chains linked via 4,4'-H{sub 2}bpz fragments

    SciTech Connect

    Xie Yiming [State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 35002 (China); College of Materials Science and Engineering, Huaqiao University, the Key Laboratory for Functional Materials of Fujian Higher Education, Quanzhou, Fujian 362021 (China); Zhao Zhenguo; Wu Xiaoyuan; Zhang Qisheng; Chen Lijuan; Wang Fei; Chen Shanci [State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 35002 (China); Lu Canzhong [State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 35002 (China)], E-mail: czlu@fjirsm.ac.cn

    2008-12-15

    A 3-connected dia-f-type metal-organic framework compound {l_brace}[Ag(L){sub 3/2}H{sub 2}PO{sub 4}]{r_brace}{sub n} (1) has been synthesized by self-assembly of 4,4'-H{sub 2}bpz (L=4,4'-H{sub 2}bpz=3,3',5,5'-tetramethyl-4,4'-bipyrazole) and Ag{sub 4}P{sub 2}O{sub 7} under hydrothermal conditions. It crystallizes in the tetragonal space group I4{sub 1}/acd with a=21.406(4) A, b=21.406(4) A, c=36.298(8) A, Z=32. X-ray single-crystal diffraction reveals that 1 has a three-dimensional framework with an unprecedented alternate left- and right-handed helices structure, featuring a non-uniform two-fold interpenetrated (4.14{sup 2}) net. Photoluminescent investigation reveals that the title compound displays interesting emissions in a wide region, which shows that the title compound may be a good potential candidate as a photoelectric material. - Graphical abstract: A 3-connected dia-f-type metal-organic framework compound [Ag(4,4'-bpz){sub 3/2}H{sub 2}PO{sub 4}] shows unprecedented alternating left- and right-handed helices structure, featuring a non-uniform two-fold interpenetrated (4.14{sup 2}) net.

  14. Bus Serialization for Reducing Power Consumption

    Microsoft Academic Search

    Naoya Hatta; Niko Demus Barli; Chitaka Iwama; Luong Dinh Hung; Daisuke Tashiro; Shuichi Sakai; Hidehiko Tanaka

    2006-01-01

    yyy Shared-bus chip multiprocessors require buses with long wires. The portion of power consumed in wires relatively increases with device scaling. In this paper, we advocate the use of bus serialization to reduce bus power consumption. Bus serialization decreases the number of wires, and increases the pitch between wires. The wider pitch decreases the coupling capacitances of wires, and consequently

  15. Kismet: parallel speedup estimates for serial programs

    Microsoft Academic Search

    Donghwan Jeon; Saturnino Garcia; Chris Louie; Michael Bedford Taylor

    2011-01-01

    Software engineers now face the difficult task of refactoring serial programs for parallel execution on multicore processors. Currently, they are offered little guidance as to how much benefit may come from this task, or how close they are to the best possible parallelization. This paper presents Kismet, a tool that creates parallel speedup estimates for unparallelized serial programs. Kismet differs

  16. The Year's Work in Serials, 1987.

    ERIC Educational Resources Information Center

    Stankus, Tony

    1988-01-01

    This review of the 1987 journal literature on serials covers (1) electronic and optical storage; (2) automation of processing; (3) cataloging; (4) holdings information and cooperative efforts; (5) cost analysis and collection contraction; (6) work abroad; (7) subject collections; (8) serving patrons; (9) serials as a professional specialty; and…

  17. Examining Serial Sections of an Apple

    NSDL National Science Digital Library

    John Eichinger

    2009-05-15

    In this activity, students make serial sections of an apple. Students make cross-section prints of the top portion of the apple, then another print further into the apple, and so on until they get to the bottom of the apple. This serial sectionin

  18. Deflection prediction for serial manipulators

    NASA Technical Reports Server (NTRS)

    Fresonke, D. A.; Hernandez, E.; Tesar, D.

    1988-01-01

    A method of deflection analysis for a general serial manipulator which considers end-effector, gravity, and inertial loads is described. The conceptualized manipulator can have many degrees of freedom and be of the most general geometry. The analysis returns end-effector error based on a quasi-static approach. Thus, small oscillations (due to vibrations) are ignored and the inertial loads are considered applied loads. A kinematic analysis based on geometric influence coefficients is used to obtaining resultant joint loads. A flexibility analysis sufficient to describe general link deformation is performed to yield the local link deformations. These local values are transformed to end-effector deflections through the use of the kinematic influence coefficients as a first order approximation. End-effector deflection due to flexibilities in the joint actuators is addressed. A description of the generalized end-effector spring is presented.

  19. A Regional Serials Program under National Serials Data Program Auspices: Discussion Paper Prepared for Ad Hoc Serials Discussion Group

    ERIC Educational Resources Information Center

    Grosch, Audrey N.

    1973-01-01

    A regionally organized program for serials bibliography is proposed because of the large volume of complex data needing control and the many purposes to which the data can be put in support of regional or local needs. (2 references) (Author)

  20. Design of Serially Concatenated Trellis Coded Modulation

    NASA Technical Reports Server (NTRS)

    Benedetto, S.; Divsalar, D.; Garello, R.; Montorsi, G.; Pollara, F.

    1998-01-01

    Serial concatenation of an outer binary convolutional code with an inner TCM code over a multidimensional Euclidean constellation through an interleaver, allows to extend the extremely good performance of turbo codes to the case of high spectral efficiency.

  1. Parallel Models of Serial Behaviour: Lashley Revisited

    Microsoft Academic Search

    George Houghton; Tom Hartley

    In 1951, Lashley highlighted the importance of serial order for the brain and behavioural sciences. He considered the response chaining account untenable and proposed an alternative employing parallel response activation and \\

  2. Analysis of transitions at two-fold redundant sites in mammalian genomes. Transition redundant approach-to-equilibrium (TREx) distance metrics

    PubMed Central

    Li, Tang; Chamberlin, Stephen G; Caraco, M Daniel; Liberles, David A; Gaucher, Eric A; Benner, Steven A

    2006-01-01

    Background The exchange of nucleotides at synonymous sites in a gene encoding a protein is believed to have little impact on the fitness of a host organism. This should be especially true for synonymous transitions, where a pyrimidine nucleotide is replaced by another pyrimidine, or a purine is replaced by another purine. This suggests that transition redundant exchange (TREx) processes at the third position of conserved two-fold codon systems might offer the best approximation for a neutral molecular clock, serving to examine, within coding regions, theories that require neutrality, determine whether transition rate constants differ within genes in a single lineage, and correlate dates of events recorded in genomes with dates in the geological and paleontological records. To date, TREx analysis of the yeast genome has recognized correlated duplications that established a new metabolic strategies in fungi, and supported analyses of functional change in aromatases in pigs. TREx dating has limitations, however. Multiple transitions at synonymous sites may cause equilibration and loss of information. Further, to be useful to correlate events in the genomic record, different genes within a genome must suffer transitions at similar rates. Results A formalism to analyze divergence at two fold redundant codon systems is presented. This formalism exploits two-state approach-to-equilibrium kinetics from chemistry. This formalism captures, in a single equation, the possibility of multiple substitutions at individual sites, avoiding any need to "correct" for these. The formalism also connects specific rate constants for transitions to specific approximations in an underlying evolutionary model, including assumptions that transition rate constants are invariant at different sites, in different genes, in different lineages, and at different times. Therefore, the formalism supports analyses that evaluate these approximations. Transitions at synonymous sites within two-fold redundant coding systems were examined in the mouse, rat, and human genomes. The key metric (f2), the fraction of those sites that holds the same nucleotide, was measured for putative ortholog pairs. A transition redundant exchange (TREx) distance was calculated from f2 for these pairs. Pyrimidine-pyrimidine transitions at these sites occur approximately 14% faster than purine-purine transitions in various lineages. Transition rate constants were similar in different genes within the same lineages; within a set of orthologs, the f2 distribution is only modest overdispersed. No correlation between disparity and overdispersion is observed. In rodents, evidence was found for greater conservation of TREx sites in genes on the X chromosome, accounting for a small part of the overdispersion, however. Conclusion The TREx metric is useful to analyze the history of transition rate constants within these mammals over the past 100 million years. The TREx metric estimates the extent to which silent nucleotide substitutions accumulate in different genes, on different chromosomes, with different compositions, in different lineages, and at different times. PMID:16545144

  3. A Feature-Based Serial Approach to Classifier Combination A Feature-Based Serial Approach to Classifier Combination

    E-print Network

    Last, Mark

    A Feature-Based Serial Approach to Classifier Combination A Feature-Based Serial Approach to Classifier Combination Mark Last1 Department of Information Systems Engineering, Ben-Gurion University A Feature-Based Serial Approach to Classifier Combination 2 A Feature-Based Serial Approach to Classifier

  4. Serial Murder in Southeast Asia: Collecting and Preserving Serials in Changing Landscape.

    ERIC Educational Resources Information Center

    Mitchell, Carol L.

    This paper surveys the loss of important serials from and about Southeast Asia. At risk titles are described, including statistical serials, publications of regional presses, minority language magazines, science and technology journals, political and non-governmental organization publications, popular or mass press publications, women's magazines,…

  5. Precise quantitation of antinuclear antibodies on HEp-2 cells without the need for serial dilution.

    PubMed Central

    Hollingsworth, P N; Dawkins, R I; Peter, J B

    1996-01-01

    Using HEp-2 cells as a substrate, we developed a method to quantitate antinuclear antibodies (ANA) by comparing the green fluorescence intensity of unknown samples with that of calibrated standards. Intensity was then converted to international units per milliliter by reference to a standard curve. This method is accurate and precise around the cutoff for positively (5 to 10 IU/ml) and therefore provides a reliable screening test for active, untreated systemic lupus erythematosus. Furthermore, the method can identify sera likely to contain autoantibodies commonly detected in ANA-positive sera (SS-A, SS-B, Sm, small nuclear ribonucleoprotein, Scl-70, and double-stranded DNA). PMID:8807199

  6. Serial concept maps: tools for concept analysis.

    PubMed

    All, Anita C; Huycke, LaRae I

    2007-05-01

    Nursing theory challenges students to think abstractly and is often a difficult introduction to graduate study. Traditionally, concept analysis is useful in facilitating this abstract thinking. Concept maps are a way to visualize an individual's knowledge about a specific topic. Serial concept maps express the sequential evolution of a student's perceptions of a selected concept. Maps reveal individual differences in learning and perceptions, as well as progress in understanding the concept. Relationships are assessed and suggestions are made during serial mapping, which actively engages the students and faculty in dialogue that leads to increased understanding of the link between nursing theory and practice. Serial concept mapping lends itself well to both online and traditional classroom environments. PMID:17547345

  7. Dose reduction in CT with correlated-polarity noise reduction: context-dependent spatial resolution and noise properties demonstrating two-fold dose reduction with minimal artifacts

    NASA Astrophysics Data System (ADS)

    Dobbins, James T.; Wells, Jered R.; Segars, W. Paul

    2014-03-01

    Correlated-polarity noise reduction (CPNR) is a novel noise reduction technique that uses a statistical approach to reducing noise while maintaining excellent spatial resolution and a traditional noise appearance. It was demonstrated in application to CT imaging for the first time at SPIE 2013 and showed qualitatively excellent image quality at half of normal CT dose. In this current work, we measure quantitatively the spatial resolution and noise properties of CPNR in CT imaging. To measure the spatial resolution, we developed a metrology approach that is suitable for nonlinear algorithms such as CPNR. We introduce the formalism of Signal Modification Factor, SMF(u,v), which is the ratio in frequency space of the CPNR-processed image divided by the noise-free image, averaged over an ensemble of ROIs in a given anatomical context. SMF is a nonlinear analog to the MTF. We used XCAT computer-generated anthropomorphic phantom images followed by projection space processing with CPNR. The SMF revealed virtually no effect from CPNR on spatial resolution of the images (<7% degradation at all frequencies). Corresponding contextdependent NPS measurements generated with CPNR at half-dose were about equal to the NPS of full-dose images without CPNR. This result demonstrates for the first time the quantitative determination of a two-fold reduction in dose with CPNR with less than 7% reduction in spatial resolution. We conclude that CPNR shows strong promise as a method for reduction of noise (and hence, dose) in CT. CPNR may also be used in combination with iterative reconstruction techniques for yet further dose reduction, pending further investigation.

  8. Structural Variations in ?-(BDA-TTP)2FeCl4 at Low Temperature and under Pressure: Charge-Ordered State with a Two-Fold Crystal Structure

    NASA Astrophysics Data System (ADS)

    Sasamori, Kota; Takahashi, Kazuyuki; Kodama, Takeshi; Fujita, Wataru; Kikuchi, Koichi; Yamada, Jun-ichi

    2013-05-01

    The pressure-induced organic superconductor ?-(BDA-TTP)2FeCl4 [BDA-TTP = 2,5-bis(1,3-dithian-2-ylidene)-1,3,4,6-tetrathiapentalene], which shows a metal--insulator (MI) transition at TMI = 113 K under ambient pressure, has been found by X-ray study to have a two-fold crystal structure along the c-axis in the insulating state at 10 K. In the donor layer, there are four independent BDA-TTP molecules, which are divided into two charge-poor ones and two charge-rich ones on the basis of the folding dihedral angles around the intramolecular sulfur-to-sulfur axes of two outer dithiane rings in BDA-TTP. The charge separation leads to the formation of two types of dimers: a dimer consisting of two charge-poor donors and a dimer consisting of two charge-rich ones. The tight-binding band calculation revealed a band gap of 5.3 meV in the energy dispersion. The MI transition can be therefore accounted for by the charge separation. In addition, we investigated the crystal and electronic structures of ?-(BDA-TTP)2FeCl4 at different pressures up to 21 kbar, and found that the application of pressures causes variations in both the conformation of donor molecule and the donor arrangement, which are responsible for almost uniform interaction in the donor stacking and for an increase in bandwidth (W). As a result, the suppression of MI transition and subsequent occurrence of superconductivity in ?-(BDA-TTP)2FeCl4 would be observed with increasing pressure.

  9. Serial multiplier arrays for parallel computation

    NASA Technical Reports Server (NTRS)

    Winters, Kel

    1990-01-01

    Arrays of systolic serial-parallel multiplier elements are proposed as an alternative to conventional SIMD mesh serial adder arrays for applications that are multiplication intensive and require few stored operands. The design and operation of a number of multiplier and array configurations featuring locality of connection, modularity, and regularity of structure are discussed. A design methodology combining top-down and bottom-up techniques is described to facilitate development of custom high-performance CMOS multiplier element arrays as well as rapid synthesis of simulation models and semicustom prototype CMOS components. Finally, a differential version of NORA dynamic circuits requiring a single-phase uncomplemented clock signal introduced for this application.

  10. Stress in dilute suspensions

    NASA Technical Reports Server (NTRS)

    Passman, Stephen L.

    1989-01-01

    Generally, two types of theory are used to describe the field equations for suspensions. The so-called postulated equations are based on the kinetic theory of mixtures, which logically should give reasonable equations for solutions. The basis for the use of such theory for suspensions is tenuous, though it at least gives a logical path for mathematical arguments. It has the disadvantage that it leads to a system of equations which is underdetermined, in a sense that can be made precise. On the other hand, the so-called averaging theory starts with a determined system, but the very process of averaging renders the resulting system underdetermined. A third type of theory is proposed in which the kinetic theory of gases is used to motivate continuum equations for the suspended particles. This entails an interpretation of the stress in the particles that is different from the usual one. Classical theory is used to describe the motion of the suspending medium. The result is a determined system for a dilute suspension. Extension of the theory to more concentrated systems is discussed.

  11. Dilute magnetic semiconductor nanowires

    NASA Astrophysics Data System (ADS)

    Kulkarni, J. S.; Kazakova, O.; Holmes, J. D.

    2006-11-01

    Semiconductor materials form the basis of modern electronics, communication, data storage and computing technologies. One of today’s challenges for the development of future technologies is the realization of devices that control not only the electron charge, as in present electronics, but also its spin, setting the basis for future spintronics. Spintronics represents the concept of the synergetic and multifunctional use of charge and spin dynamics of electrons, aiming to go beyond the traditional dichotomy of semiconductor electronics and magnetic storage technology. The most direct method to induce spin-polarized electrons into a semiconductor is by introducing appropriate transition-metal or rare-earth dopants producing a dilute magnetic semiconductor (DMS). At the same time the seamless integration of future spintronic devices into nanodevices would require the fabrication of one-dimensional DMS nanostructures in well-defined architectures. In this review we focus on recent advances in the synthesis of DMS nanowires as well discussing the structural, optical and magnetic properties of these materials.

  12. Revisiting the dilution procedure used to manipulate microbial biodiversity in terrestrial systems.

    PubMed

    Yan, Yan; Kuramae, Eiko E; Klinkhamer, Peter G L; van Veen, Johannes A

    2015-07-01

    It is hard to assess experimentally the importance of microbial diversity in soil for the functioning of terrestrial ecosystems. An approach that is often used to make such assessment is the so-called dilution method. This method is based on the assumption that the biodiversity of the microbial community is reduced after dilution of a soil suspension and that the reduced diversity persists after incubation of more or less diluted inocula in soil. However, little is known about how the communities develop in soil after inoculation. In this study, serial dilutions of a soil suspension were made and reinoculated into the original soil previously sterilized by gamma irradiation. We determined the structure of the microbial communities in the suspensions and in the inoculated soils using 454-pyrosequencing of 16S rRNA genes. Upon dilution, several diversity indices showed that, indeed, the diversity of the bacterial communities in the suspensions decreased dramatically, with Proteobacteria as the dominant phylum of bacteria detected in all dilutions. The structure of the microbial community was changed considerably in soil, with Proteobacteria, Bacteroidetes, and Verrucomicrobia as the dominant groups in most diluted samples, indicating the importance of soil-related mechanisms operating in the assembly of the communities. We found unique operational taxonomic units (OTUs) even in the highest dilution in both the suspensions and the incubated soil samples. We conclude that the dilution approach reduces the diversity of microbial communities in soil samples but that it does not allow accurate predictions of the community assemblage during incubation of (diluted) suspensions in soil. PMID:25888175

  13. / http://www.sciencemag.org/content/early/recent / 11 September 2014 / Page 1 / 10.1126/science.1256729 The hallmark of meiosis is a two-fold reduction in ploidy, which occurs

    E-print Network

    Asbury, Chip

    .1126/science.1256729 The hallmark of meiosis is a two-fold reduction in ploidy, which occurs because one round of DNA replication is followed by two rounds of chromosome segregation. During meiosis I, sister chromatids uniquely co-migrate, thereby enabling segregation of homologous chromosomes. During meiosis II

  14. DAVINCI: Dilute Aperture VIsible Nulling Coronagraphic Imager

    NASA Technical Reports Server (NTRS)

    Shao, Michael; Levine, B. M.; Vasisht, G.; Lane, B. F.; Woodruff, R.; Vasudevan, G.; Samuele, R.; Lloyd, C. A.; Clampin, M.; Lyon, R.; Guyon, O.

    2008-01-01

    This slide presentation gives an overview of DAVINCI (Dilute Aperture VIsible Nulling Coronagraphic Imager). The presentation also includes information about dilute aperture coronagraph, and lyot efficiency.

  15. "Serial" Effects in Parallel Models of Reading

    ERIC Educational Resources Information Center

    Chang, Ya-Ning; Furber, Steve; Welbourne, Stephen

    2012-01-01

    There is now considerable evidence showing that the time to read a word out loud is influenced by an interaction between orthographic length and lexicality. Given that length effects are interpreted by advocates of dual-route models as evidence of serial processing this would seem to pose a serious challenge to models of single word reading which…

  16. Notes for Serials Cataloging. Second Edition.

    ERIC Educational Resources Information Center

    Geer, Beverley, Ed.; Caraway, Beatrice L., Ed.

    Notes are indispensable to serials cataloging. Researchers, reference librarians, and catalogers regularly use notes on catalog records and, as the audience for these notes has expanded from the local library community to the global Internet community, the need for notes to be cogent, clear, and useful is greater than ever. This book is a…

  17. Analysis of serial measurements in medical research

    Microsoft Academic Search

    J. N. S. Matthews; D. G. Altman; M. J. Campbell; P. Royston

    1990-01-01

    In medical research data are often collected serially on subjects. The statistical analysis of such data is often inadequate in two ways: it may fail to settle clinically relevant questions and it may be statistically invalid. A commonly used method which compares groups at a series of time points, possibly with t tests, is flawed on both counts. There may,

  18. A Serials Holdings List Using UNIX Refer.

    ERIC Educational Resources Information Center

    Boyce, Judith I.; Boyce, Bert R.

    1987-01-01

    Describes the production of an automated union list of serials holdings at minimal cost by a small consortium of state government libraries in Louisiana. Use of the UNIX Refer system without any modifications for data entry and production is described. (EM)

  19. Serial Position Effects in Nonword Repetition

    ERIC Educational Resources Information Center

    Gupta, P.; Lipinski, J.; Abbs, B.; Lin, P.H.

    2005-01-01

    A growing body of research has emphasized the linkage between performance in immediate serial recall of lists, nonword repetition, and word learning. Recently, it has been reported that primacy and recency effects are obtained in repetition of individual syllables within nonwords (Gupta, in press). Five experiments examined whether such…

  20. Serial Position Learning in Honeybees Randolf Menzel*

    E-print Network

    Menzel, Randolf - Institut für Biologie

    ), the rank order of position salience is 1, 2 and 3 (numbered from T-junction). No learning is foundSerial Position Learning in Honeybees Randolf Menzel* Institute Biology, Neurobiology, Freie Universita¨t Berlin, Berlin, Germany Abstract Learning of stimulus sequences is considered

  1. Serial reconfigurable mismatch-tolerant clock distribution

    Microsoft Academic Search

    Atanu Chattopadhyay; Zeljko Zilic

    2009-01-01

    We present an unconventional clock distribution that emphasizes flexibility and layout independence. It suits a variety of applications, clock domain shapes and sizes using a modular standard cell approach that compensates intra-die temperature and process variances. Our clock distribution provides control over regional clock skew, permits use in beneficial skew applications and facilitates silicon-debug. By adding routing to the serial

  2. Sea Urchin Embryology: Sperm Dilution

    NSDL National Science Digital Library

    PhD David Epel (Stanford U. Hopkins Marine Station)

    2007-04-20

    Lab directions for up to two 50 min periods and the last of the dilution labs. Includes set up information, materials, procedure, experimental design, things to observe, math possibilities, thought-provoking questions and an assessment.

  3. SUNCAT: The serials union catalogue for the UK research community 

    E-print Network

    Mulligan, Zena

    SUNCAT is the national Serials Union CATalogue for the UK research community and is available at http://www.suncat.ac.uk SUNCAT is a freely available tool to help both researchers and librarians locate serials held in ...

  4. Dynamic Control of Serial-batch Processing Systems

    E-print Network

    Cerekci, Abdullah

    2010-01-14

    This research explores how near-future information can be used to strategically control a batch processor in a serial-batch processor system setting. Specifically, improved control is attempted by using the upstream serial processor to provide near...

  5. 7 CFR 29.9205 - Identification number (farm serial number).

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...2011-01-01 2011-01-01 false Identification number (farm serial number). ...Statement and Regulations Governing the Identification and Certification of Nonquota Tobacco...Area Definitions § 29.9205 Identification number (farm serial number)....

  6. 7 CFR 29.9205 - Identification number (farm serial number).

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...2010-01-01 2010-01-01 false Identification number (farm serial number). ...Statement and Regulations Governing the Identification and Certification of Nonquota Tobacco...Area Definitions § 29.9205 Identification number (farm serial number)....

  7. Seriality in Contemporary American Memoir: 1957-2007 

    E-print Network

    McDaniel-Carder, Nicole Eve

    2010-10-12

    In this dissertation, I examine the practice of what I term serial memoir in the second-half of the twentieth century in American literature, arguing that serial memoir represents an emerging and significant trend in ...

  8. A sociological analysis of serial murder: victim and offender characteristics

    E-print Network

    Dunlap, Donna Jean

    1990-01-01

    -off' periods" (p. 46). A more detailed definition is provided by Levin and Fox (1985) who differentiate between two types of mass murder: serial and simultaneous. ". . . serial killers ? mass murderers who slay their victims on different occasions...

  9. Sea Urchin Embryology: Simple Dilutions

    NSDL National Science Digital Library

    PhD David Epel (Stanford U. Hopkins Marine Station)

    2006-12-20

    Starting from a known concentration students learn to use dilutions to determine the concentration of an unknown. The following skills are used in this lesson: 1. making dilutions 2. reading the meter on a simple homemade spectrophotometer 3. keeping careful laboratory records 4. graphing on linear graph paper 5. determining an unknown concentration from known 6. using a colored filter to enhance contrast and sensitivity

  10. Serial Position Markers in Space: Visuospatial Priming of Serial Order Working Memory Retrieval

    PubMed Central

    De Belder, Maya; Abrahamse, Elger; Kerckhof, Emma; Fias, Wim; van Dijck, Jean-Philippe

    2015-01-01

    Most general theories on serial order working memory (WM) assume the existence of position markers that are bound to the to-be-remembered items to keep track of the serial order. So far, the exact cognitive/neural characteristics of these markers have remained largely underspecified, while direct empirical evidence for their existence is mostly lacking. In the current study we demonstrate that retrieval from verbal serial order WM can be facilitated or hindered by spatial cuing: begin elements of a verbal WM sequence are retrieved faster after cuing the left side of space, while end elements are retrieved faster after cuing the right side of space. In direct complement to our previous work—where we showed the reversed impact of WM retrieval on spatial processing—we argue that the current findings provide us with a crucial piece of evidence suggesting a direct and functional involvement of space in verbal serial order WM. We outline the idea that serial order in verbal WM is coded within a spatial coordinate system with spatial attention being involved when searching through WM, and we discuss how this account can explain several hallmark observations related to serial order WM. PMID:25611595

  11. Serial Murder: A More Accurate and Inclusive Definition

    Microsoft Academic Search

    Kathleen M. Heide; Belea Keeney

    1995-01-01

    A review of research on serial murder revealed that the 10 definitions frequently cited failed to adequately represent the totality of serial murder. This article reviews the evolution of these definitions in the professional literature. A more complete definition is proposed that encompasses all types of serial murder, not only those committed by roaming males who act out of lust.

  12. From Animal Cruelty to Serial Murder: Applying the Graduation Hypothesis

    Microsoft Academic Search

    Jeremy Wright; Christopher Hensley

    2003-01-01

    Although serial murder has been recorded for centuries, limited academic attention has been given to this important topic. Scholars have attempted to examine the causality and motivations behind the rare phenomenon of serial murder. However, scant research exists which delves into the childhood characteristics of serial murderers. Using social learning theory, some of these studies present supporting evidence for a

  13. Access to serials: integrating SFX with Evergreen open source ILS

    Microsoft Academic Search

    Guoying Liu; Huoxin Zheng

    2011-01-01

    Purpose – The purpose of this paper is to address the integration of SFX link resolver with Evergreen open source integrated library system (ILS). It also aims to describe a method to incorporate print serials into SFX. Design\\/methodology\\/approach – A print serials project has been proposed and implemented to integrate print and electronic serials at University of Windsor Leddy Library.

  14. Serials Publications Section. Collections and Services Division. Papers.

    ERIC Educational Resources Information Center

    International Federation of Library Associations, The Hague (Netherlands).

    Papers on serials and their bibliographic control, which were presented at the 1983 International Federation of Library Associations (IFLA) conference, include: (1) "ISDS [International Serials Data System] and the National Bibliography," in which Ross Bourne (United Kingdom) describes ISDS development, the distinctive features of serials in…

  15. Stiffness mapping of compliant parallel mechanisms in a serial arrangement

    E-print Network

    Florida, University of

    Stiffness mapping of compliant parallel mechanisms in a serial arrangement Hyun K. Jung a , Carl D of a mechanism having two compliant parallel mechanisms in a serial arrange- ment. A derivative of the wrench. It is shown that the resultant compliance of two compliant parallel mechanisms that are serially arranged

  16. “Shelf-Ready” Print Serials Acquisitions

    Microsoft Academic Search

    Sharon Dyas-Correia

    2011-01-01

    The focus of this installment of “The Balance Point” is “shelf-ready” print serials acquisitions, including functions associated with traditional consolidation services (ordering, receiving, check-in, labeling, claiming and batch shipments), and the newer capabilities of uploading check-in data automatically into library systems. Featured authors discuss traditional vendor consolidation services, pilot projects and experiments in the pursuit of what they define as

  17. Droplet streams for serial crystallography of proteins

    Microsoft Academic Search

    U. Weierstall; R. B. Doak; J. C. H. Spence; D. Starodub; D. Shapiro; P. Kennedy; J. Warner; G. G. Hembree; P. Fromme; H. N. Chapman

    2008-01-01

    Serial diffraction of proteins requires an injection method to deliver analyte molecules—preferably uncharged, fully hydrated,\\u000a spatially oriented, and with high flux—into a focused probe beam of electrons or X-rays that is only a few tens of microns\\u000a in diameter. This work examines conventional Rayleigh sources and electrospray-assisted Rayleigh sources as to their suitability\\u000a for this task. A comparison is made

  18. Impedance Matching for a Serial Link Manipulator

    Microsoft Academic Search

    Ryo Kurazume; Tsutomu Hasegawa

    2004-01-01

    We propose a new index for dynamic performance analysis of serial link manipulators named Impedance Matching Ellipsoid, or IME. Several indexes have been proposed for indicating static and dynamic performance of robot manipu- lators. For example, Dynamic Manipulability Ellipsoid (DME) characterizes distributions of hand acceleration produced by normalized joint torque. Manipulating-Force Ellipsoid (MFE) denotes static torque-force transmission ef£ciency from actuators

  19. Lipidic phase membrane protein serial femtosecond crystallography

    PubMed Central

    Johansson, Linda C; Arnlund, David; White, Thomas A; Katona, Gergely; DePonte, Daniel P; Weierstall, Uwe; Doak, R Bruce; Shoeman, Robert L; Lomb, Lukas; Malmerberg, Erik; Davidsson, Jan; Nass, Karol; Liang, Mengning; Andreasson, Jakob; Aquila, Andrew; Bajt, Sasa; Barthelmess, Miriam; Barty, Anton; Bogan, Michael J; Bostedt, Christoph; Bozek, John D; Caleman, Carl; Coffee, Ryan; Coppola, Nicola; Ekeberg, Tomas; Epp, Sascha W; Erk, Benjamin; Fleckenstein, Holger; Foucar, Lutz; Graafsma, Heinz; Gumprecht, Lars; Hajdu, Janos; Hampton, Christina Y; Hartmann, Robert; Hartmann, Andreas; Hauser, Günter; Hirsemann, Helmut; Holl, Peter; Hunter, Mark S; Kassemeyer, Stephan; Kimmel, Nils; Kirian, Richard A; Maia, Filipe R N C; Marchesini, Stefano; Martin, Andrew V; Reich, Christian; Rolles, Daniel; Rudek, Benedikt; Rudenko, Artem; Schlichting, Ilme; Schulz, Joachim; Seibert, M Marvin; Sierra, Raymond G; Soltau, Heike; Starodub, Dmitri; Stellato, Francesco; Stern, Stephan; Strüder, Lothar; Timneanu, Nicusor; Ullrich, Joachim; Wahlgren, Weixiao Y; Wang, Xiaoyu; Weidenspointner, Georg; Wunderer, Cornelia; Fromme, Petra; Chapman, Henry N; Spence, John C H; Neutze, Richard

    2012-01-01

    X-ray free electron laser (X-feL)-based serial femtosecond crystallography is an emerging method with potential to rapidly advance the challenging field of membrane protein structural biology. here we recorded interpretable diffraction data from micrometer-sized lipidic sponge phase crystals of the Blastochloris viridis photosynthetic reaction center delivered into an X-feL beam using a sponge phase micro-jet. PMID:22286383

  20. Lipidic phase membrane protein serial femtosecond crystallography.

    PubMed

    Johansson, Linda C; Arnlund, David; White, Thomas A; Katona, Gergely; Deponte, Daniel P; Weierstall, Uwe; Doak, R Bruce; Shoeman, Robert L; Lomb, Lukas; Malmerberg, Erik; Davidsson, Jan; Nass, Karol; Liang, Mengning; Andreasson, Jakob; Aquila, Andrew; Bajt, Saša; Barthelmess, Miriam; Barty, Anton; Bogan, Michael J; Bostedt, Christoph; Bozek, John D; Caleman, Carl; Coffee, Ryan; Coppola, Nicola; Ekeberg, Tomas; Epp, Sascha W; Erk, Benjamin; Fleckenstein, Holger; Foucar, Lutz; Graafsma, Heinz; Gumprecht, Lars; Hajdu, Janos; Hampton, Christina Y; Hartmann, Robert; Hartmann, Andreas; Hauser, Günter; Hirsemann, Helmut; Holl, Peter; Hunter, Mark S; Kassemeyer, Stephan; Kimmel, Nils; Kirian, Richard A; Maia, Filipe R N C; Marchesini, Stefano; Martin, Andrew V; Reich, Christian; Rolles, Daniel; Rudek, Benedikt; Rudenko, Artem; Schlichting, Ilme; Schulz, Joachim; Seibert, M Marvin; Sierra, Raymond G; Soltau, Heike; Starodub, Dmitri; Stellato, Francesco; Stern, Stephan; Strüder, Lothar; Timneanu, Nicusor; Ullrich, Joachim; Wahlgren, Weixiao Y; Wang, Xiaoyu; Weidenspointner, Georg; Wunderer, Cornelia; Fromme, Petra; Chapman, Henry N; Spence, John C H; Neutze, Richard

    2012-03-01

    X-ray free electron laser (X-FEL)-based serial femtosecond crystallography is an emerging method with potential to rapidly advance the challenging field of membrane protein structural biology. Here we recorded interpretable diffraction data from micrometer-sized lipidic sponge phase crystals of the Blastochloris viridis photosynthetic reaction center delivered into an X-FEL beam using a sponge phase micro-jet. PMID:22286383

  1. Serial Pixel Analog-to-Digital Converter

    SciTech Connect

    Larson, E D

    2010-02-01

    This method reduces the data path from the counter to the pixel register of the analog-to-digital converter (ADC) from as many as 10 bits to a single bit. The reduction in data path width is accomplished by using a coded serial data stream similar to a pseudo random number (PRN) generator. The resulting encoded pixel data is then decoded into a standard hexadecimal format before storage. The high-speed serial pixel ADC concept is based on the single-slope integrating pixel ADC architecture. Previous work has described a massively parallel pixel readout of a similar architecture. The serial ADC connection is similar to the state-of-the art method with the exception that the pixel ADC register is a shift register and the data path is a single bit. A state-of-the-art individual-pixel ADC uses a single-slope charge integration converter architecture with integral registers and “one-hot” counters. This implies that parallel data bits are routed among the counter and the individual on-chip pixel ADC registers. The data path bit-width to the pixel is therefore equivalent to the pixel ADC bit resolution.

  2. Tablet Analysis Using Gravimetric Dilutions

    NASA Astrophysics Data System (ADS)

    Simonson, Larry A.

    2001-10-01

    This experiment introduces the concept of gravimetric dilutions in the context of tablet analysis. Caffeine tablets are analyzed by absorbance at 274 nm with reference to a standard calibration graph and tested for compliance with the USP criterion. All samples and standards are prepared using gravimetric dilutions without reference to volume or density. This experiment is appropriate for high school and college freshman chemistry courses and may be useful at higher levels. It is only necessary that students have had exposure to Beer's law.

  3. Evaluation of a diet dilution technique for measuring the response of broiler chickens to increasing concentrations of lysine

    Microsoft Academic Search

    R. M. Gous; T. R. Morris

    1985-01-01

    1. Three experiments were conducted on male broiler chickens between one and three weeks of age to determine their response to dietary lysine concentrations.2. Serial dilutions of a summit diet shown to be first?limiting in lysine were fed in all experiments. The balance between amino acids in these diets was maintained within narrow limits.3. Intake of the most?limiting amino acid

  4. Automated Serial Sectioning for 3D Reconstruction

    NASA Technical Reports Server (NTRS)

    Alkemper, Jen; Voorhees, Peter W.

    2003-01-01

    Some aspects of an apparatus and method for automated serial sectioning of a specimen of a solder, aluminum, or other relatively soft opaque material are discussed. The apparatus includes a small milling machine (micromiller) that takes precise, shallow cuts (increments of depth as small as 1 micron) to expose successive sections. A microscope equipped with an electronic camera, mounted in a fixed position on the micromiller, takes pictures of the newly exposed specimen surface at each increment of depth. The images are digitized, and the resulting data are subsequently processed to reconstruct three-dimensional (3D) features of the specimen.

  5. CMOS serial link for fully duplexed data communication

    NASA Astrophysics Data System (ADS)

    Lee, Kyeongho; Kim, Sungjoon; Ahn, Gijung; Jeong, Deog-Kyoon

    1995-04-01

    This paper describes a CMOS serial link allowing fully duplexed 500 Mbaud serial data communication. The CMOS serial link is a robust and low-cost solution to high data rate requirements. A central charge pump PLL for generating multiphase clocks for oversampling is shared by several serial link channels. Fully duplexed serial data communication is realized in the bidirectional bridge by separating incoming data from the mixed signal on the cable end. The digital PLL accomplishes process-independent data recovery by using a low-ratio oversampling, a majority voting, and a parallel data recovery scheme. Mostly, digital approach could extend its bandwidth further with scaled CMOS technology. A single channel serial link and a charge pump PLL are integrated in a test chip using 1.2 micron CMOS process technology. The test chip confirms upto 500 Mbaud unidirectional mode operation and 320 Mbaud fully duplexed mode operation with pseudo random data patterns.

  6. Recovering obliterated laser engraved serial numbers in firearms.

    PubMed

    da Silva, Ladário; dos Santos, Paulo Acioly Marques

    2008-08-01

    An easy procedure for recovering obliterated firearms serial numbers, which are laser engraved is presented in this case report. For these serial numbers, the traditional recovering method using acid etching generally fails, once marking the serial number does not necessarily imply a deep permanent deformation of the crystalline array. The standard required mirror-like finish of the surface commonly can destroy any evidence of the original serial number, i.e., can destroy the heat affected zone (HAZ) of only few micra, if it is still present. It is shown in this report that relief polishing and reflected light stereomicroscopy can, in certain cases, successfully reveal obliterated serial numbers, originally marked by laser. The use of this procedure for recovering this type of obliterated serial number is illustrated and discussed with an example we have dealt with. PMID:18662602

  7. Concurrent Cognitive Processes in Rat Serial Pattern Learning: Item Memory, Serial Position, and Pattern Structure

    ERIC Educational Resources Information Center

    Muller, Melissa D.; Fountain, Stephen B.

    2010-01-01

    Three experiments examined the processes mediating rat serial pattern learning for rule-consistent versus rule-violating pattern elements ("violation elements"). In all three experiments, rats were trained to press retractable levers in a circular array in a specific sequence for brain-stimulation reward (BSR). Experiment 1 examined the role of…

  8. Representation of the serial killer on the Italian Internet.

    PubMed

    Villano, P; Bastianoni, P; Melotti, G

    2001-10-01

    The representation of serial killers was examined from the analysis of 317 Web pages in the Italian language to study how the psychological profiles of serial killers are described on the Italian Internet. The correspondence analysis of the content of these Web pages shows that in Italy the serial killer is associated with words such as "monster" and "horror," which suggest and imply psychological perversion and aberrant acts. These traits are peculiar for the Italian scenario. PMID:11783573

  9. Single-chip computer and serial communication of GPRS modem

    NASA Astrophysics Data System (ADS)

    Li, Baohong

    2013-03-01

    Communication between PC and Modem is common, while communication between single-chip computer and Modem is rare. This article will elaborate serial communication between single-chip computer and GPRS modem. The wide use of serial communication will enable various transmission units to connect as one organically and exchange data and information in safe and reliable manner. However, since signal of each transmission channel is different, the serial port in use should be various. Therefore, in order to realize communication among units, it is necessary to involve serial port conversion among each unit.

  10. Serial” effects in parallel models of reading

    PubMed Central

    Chang, Ya-Ning; Furber, Steve; Welbourne, Stephen

    2012-01-01

    There is now considerable evidence showing that the time to read a word out loud is influenced by an interaction between orthographic length and lexicality. Given that length effects are interpreted by advocates of dual-route models as evidence of serial processing this would seem to pose a serious challenge to models of single word reading which postulate a common parallel processing mechanism for reading both words and nonwords (Coltheart, Rastle, Perry, Langdon, & Ziegler, 2001; Rastle, Havelka, Wydell, Coltheart, & Besner, 2009). However, an alternative explanation of these data is that visual processes outside the scope of existing parallel models are responsible for generating the word-length related phenomena (Seidenberg & Plaut, 1998). Here we demonstrate that a parallel model of single word reading can account for the differential word-length effects found in the naming latencies of words and nonwords, provided that it includes a mapping from visual to orthographic representations, and that the nature of those orthographic representations are not preconstrained. The model can also simulate other supposedly “serial” effects. The overall findings were consistent with the view that visual processing contributes substantially to the word-length effects in normal reading and provided evidence to support the single-route theory which assumes words and nonwords are processed in parallel by a common mechanism. PMID:22343366

  11. Science Notes: Dilution of a Weak Acid

    ERIC Educational Resources Information Center

    Talbot, Christopher; Wai, Chooi Khee

    2014-01-01

    This "Science note" arose out of practical work involving the dilution of ethanoic acid, the measurement of the pH of the diluted solutions and calculation of the acid dissociation constant, K[subscript a], for each diluted solution. The students expected the calculated values of K[subscript a] to be constant but they found that the…

  12. Cryogen-free dilution refrigerators

    NASA Astrophysics Data System (ADS)

    Uhlig, K.

    2012-12-01

    We review briefly our first cryogen-free dilution refrigerator (CF-DR) which was precooled by a GM cryocooler. We then show how today's dry DRs with pulse tube precooling have developed. A few examples of commercial DRs are explained and noteworthy features pointed out. Thereby we describe the general advantages of cryogen-free DRs, but also show where improvements are still desirable. At present, our dry DR has a base temperature of 10 mK and a cooling capacity of 700 ?W at a mixing chamber temperature of 100 mK. In our cryostat, in most recent work, an additional refrigeration loop was added to the dilution circuit. This 4He circuit has a lowest temperature of about 1 K and a refrigeration capacity of up to 100 mW at temperatures slightly above 1 K; the dilution circuit and the 4He circuit can be run separately or together. The purpose of this additional loop is to increase the cooling capacity for experiments where the cooling power of the still of the DR is not sufficient to cool cold amplifiers and cables, e.g. in studies on superconducting quantum circuits or astrophysical applications.

  13. Multiple Serial List Learning with Two Mnemonic Techniques.

    ERIC Educational Resources Information Center

    Marston, Paul T.; Young, Robert K.

    The classic mnemonic for learning serial lists, the method of loci, and its modern counterpart, the peg system, were compared by having subjects learn three 20-item serial lists. In addition to the type of mnemonic training, list imagery was either high (rated 6-7) or medium (rated 4-5), and instructions were either progressive elaboration (e.g.,…

  14. EXPLOITING IMMUNOLOGICAL METAPHORS IN THE DEVELOPMENT OF SERIAL, PARALLEL, AND

    E-print Network

    Kent, University of

    EXPLOITING IMMUNOLOGICAL METAPHORS IN THE DEVELOPMENT OF SERIAL, PARALLEL, AND DISTRIBUTED LEARNING;Abstract This thesis examines the use of immunological metaphors in building serial, parallel are placed in the context of this framework. An investigation into the use of immunological components

  15. Joint Stiffness Identification of Industrial Serial Robots Claire Dumasa

    E-print Network

    Paris-Sud XI, Université de

    Joint Stiffness Identification of Industrial Serial Robots Claire Dumasa , St´ephane Caroa , Mehdi a new methodology for the joint stiffness identification of industrial serial robots and as consequence for the evaluation of both translational and rotational displacements of the robot's end-effector subject

  16. Sex Differences in a Children's Spatial Serial-Learning Task.

    ERIC Educational Resources Information Center

    Orsini, A.; And Others

    1982-01-01

    Eighty boys and 80 girls ages 9 to 10 from elementary schools in Naples, Italy completed a spatial span test and a spatial serial-learning task. Corsi's block-tapping test was used in each. Males performed better in both cases; their superior performance on the spatial serial-learning task was independent of their superiority in the spatial-span…

  17. Building a Comprehensive Serials Decision Database at Virginia Tech.

    ERIC Educational Resources Information Center

    Metz, Paul; Cosgriff, John

    2000-01-01

    Discussion of library purchasing decisions regarding serials focuses on efforts at Virginia Polytechnic Institute and State University to compile numerous measures into a comprehensive database for decision support. Discusses a faculty survey of serials needs and future implications. (Author/LRW)

  18. Indexing Serialized Fiction: May the Force Be with You.

    ERIC Educational Resources Information Center

    Barr, Melissa M.

    The adult novel offers indexers an unusual opportunity to create a serialized fiction index. This research paper involved designing and creating a Character Index, Thesaurus, Glossary, and Abstract (with descriptors) for 21 novels based on the "Star Wars" movies. The novels are an unusual example of serialized fiction featuring main characters,…

  19. The Disappearance of Moral Choice in Serially Reproduced Narratives

    E-print Network

    Kruschke, John K.

    solution of moral dilemmas. One could speculate, for example, that moral reasoning often is the productThe Disappearance of Moral Choice in Serially Reproduced Narratives Fritz Breithaupt1 , Kevin M influence moral decision-making? Our ongoing studies use serial reproduction of narratives, that is multiple

  20. Price Index for U.S. Serial Services 1991.

    ERIC Educational Resources Information Center

    Shroyer, Andrew

    1991-01-01

    Presents the annual survey of prices for U.S. serial services for 1991 which was compiled in conjunction with the Faxon Company. Comparative data for 1977-91 are included for the areas of business, humanities, law, science and technology, social science, and documents, as well as serial services from the H.W. Wilson Company. (LRW)

  1. Subject Access to Serial Publications in Toronto Bank Libraries.

    ERIC Educational Resources Information Center

    Shubert, Steven Blake

    1991-01-01

    A survey of five major bank libraries revealed three distinct levels of subject access to serial publications: manually based systems with no formal subject access; computer-aided systems in which the sorting capabilities of computerized serials management are utilized to generate printed lists arranged by subject; and online catalogs with subject…

  2. Gateway between high-performance Fieldbus and serial communication

    Microsoft Academic Search

    Sung Su Yoon; Jea Chul Lee; Seong Jin Cho; Jae Wook Jeon

    2010-01-01

    In this paper, we present a design of a gateway system to adapt the family of industrial computer network protocols used for real-time distributed control (Fieldbus) and the traditional serial communication. This gateway is designed to receive the data frame of Fieldbus and send the transferred data via serial communication. The proposed gateway can combine the properties of the high

  3. Retrospective Revaluation Effects Following Serial Compound Training and Target Extinction

    ERIC Educational Resources Information Center

    Effting, Marieke; Vervliet, Bram; Kindt, Merel

    2010-01-01

    Using a conditioned suppression task, two experiments examined retrospective revaluation effects after serial compound training in a release from overshadowing design. In Experiment 1, serial X [right arrow] A+ training produced suppression to target A, which was enhanced when preceded by feature X, whereas X by itself elicited no suppression.…

  4. Are Electronic Serials Helping or Hindering Academic Libraries?

    ERIC Educational Resources Information Center

    Wallenius, Leila I. T.

    2007-01-01

    As academic libraries move toward the electronic frontier for their serial subscriptions, there are several issues to be considered. This paper intends to outline the advantages and disadvantages with respect to electronic and paper serials, address selection criteria, and describe our practice in coping with these issues at the Leddy Library of…

  5. Serial Magnetization Transfer Imaging in Acute Optic Neuritis

    ERIC Educational Resources Information Center

    Hickman, S. J.; Toosy, A. T.; Jones, S. J.; Altmann, D. R.; Miszkiel, K. A.; MacManus, D. G.; Barker, G. J.; Plant, G. T.; Thompson, A. J.; Miller, D.H.

    2004-01-01

    In serial studies of multiple sclerosis lesions, reductions in magnetization transfer ratio (MTR) are thought to be due to demyelination and axonal loss, with later rises due to remyelination. This study followed serial changes in MTR in acute optic neuritis in combination with clinical and electrophysiological measurements to determine if the MTR…

  6. On-Line Serials Control in a Consortium Setting.

    ERIC Educational Resources Information Center

    Loepprich, Joyce

    The Medical Sciences Library of the University of California, Irvine acquired an on-line serials control system quickly and at low cost by entering into a consortium with the University of California, Los Angeles Biomedical Library, whose on-line serials system has been in existence and operating successfully for four years. The conversion was…

  7. Irish Serials in the Boston College Libraries

    NSDL National Science Digital Library

    The Boston College Library system has online a searchable database of its noted Irish Serials collection. Researchers can now browse and search the list of over 1,400 newspapers, magazines, and journals that originate from or pertain to Ireland before deciding on whether to take a trip to Boston. The Libraries' holdings "range in date from 1685 to the present and cover Irish history, literature, politics, art, archaeology, economics, genealogy, music, and law." Users can search by title keyword, date range, or microform series. Search returns provide complete holdings information and a legend denoting microfiche or microform series. For example, NIPL denotes the Northern Ireland Political Literature series and IPRN (POST CW REP.) the Post Civil War Republican/Fianna Fail series.

  8. Serial murder by children and adolescents.

    PubMed

    Myers, Wade C

    2004-01-01

    Six cases of serial murder by children and adolescents spanning the past 150 years are presented. The available literature pertaining to this area is reviewed. Each of these six offenders committed sexually homicidal behavior as demonstrated by their expression of erotic interest or engagement in overt sexual behavior at the crime scenes. From a DSM-IV-TR perspective they all exhibited signs of sexual sadism, and their crime characteristics reflected behavior of a more predatory than affective nature. Hands on methods of killing were preferred, i.e., cutting, stabbing, or strangulation. These crimes are extremely rare. Case reports in this area are encouraged to advance our knowledge of these youths. PMID:15211557

  9. Data Exploration Toolkit for serial diffraction experiments

    PubMed Central

    Zeldin, Oliver B.; Brewster, Aaron S.; Hattne, Johan; Uervirojnangkoorn, Monarin; Lyubimov, Artem Y.; Zhou, Qiangjun; Zhao, Minglei; Weis, William I.; Sauter, Nicholas K.; Brunger, Axel T.

    2015-01-01

    Ultrafast diffraction at X-ray free-electron lasers (XFELs) has the potential to yield new insights into important biological systems that produce radiation-sensitive crystals. An unavoidable feature of the ‘diffraction before destruction’ nature of these experiments is that images are obtained from many distinct crystals and/or different regions of the same crystal. Combined with other sources of XFEL shot-to-shot variation, this introduces significant heterogeneity into the diffraction data, complicating processing and interpretation. To enable researchers to get the most from their collected data, a toolkit is presented that provides insights into the quality of, and the variation present in, serial crystallography data sets. These tools operate on the unmerged, partial intensity integration results from many individual crystals, and can be used on two levels: firstly to guide the experimental strategy during data collection, and secondly to help users make informed choices during data processing. PMID:25664746

  10. Data Exploration Toolkit for serial diffraction experiments.

    PubMed

    Zeldin, Oliver B; Brewster, Aaron S; Hattne, Johan; Uervirojnangkoorn, Monarin; Lyubimov, Artem Y; Zhou, Qiangjun; Zhao, Minglei; Weis, William I; Sauter, Nicholas K; Brunger, Axel T

    2015-02-01

    Ultrafast diffraction at X-ray free-electron lasers (XFELs) has the potential to yield new insights into important biological systems that produce radiation-sensitive crystals. An unavoidable feature of the `diffraction before destruction' nature of these experiments is that images are obtained from many distinct crystals and/or different regions of the same crystal. Combined with other sources of XFEL shot-to-shot variation, this introduces significant heterogeneity into the diffraction data, complicating processing and interpretation. To enable researchers to get the most from their collected data, a toolkit is presented that provides insights into the quality of, and the variation present in, serial crystallography data sets. These tools operate on the unmerged, partial intensity integration results from many individual crystals, and can be used on two levels: firstly to guide the experimental strategy during data collection, and secondly to help users make informed choices during data processing. PMID:25664746

  11. The serial harness interacting with a wall

    E-print Network

    P. A. Ferrari; L. R. G. Fontes; B. Niederhauser; M. Vachkovskaia

    2006-01-08

    The serial harnesses introduced by Hammersley describe the motion of a hypersurface of dimension d embedded in a space of dimension $d+1$. The height assigned to each site i of Z^d is updated by taking a weighted average of the heights of some of the neighbors of i plus a ``noise'' (a centered random variable). The surface interacts by exclusion with a ``wall'' located at level zero: the updated heights are not allowed to go below zero. We show that for any distribution of the noise variables and in all dimensions, the surface delocalizes. This phenomenon is related to the so called ``entropic repulsion''. For some classes of noise distributions, characterized by their tail, we give explicit bounds on the speed of the repulsion.

  12. Reconstructing Genealogies of Serial Samples Under the Assumption of a Molecular Clock Using Serial-Sample UPGMA

    Microsoft Academic Search

    Alexei Drummond; Allen G. Rodrigo

    Reconstruction of evolutionary relationships from noncontemporaneous molecular samples provides a new challenge for phylogenetic reconstruction methods. With recent biotechnological advances there has been an increase in molecular sequencing throughput, and the potential to obtain serial samples of sequences from populations, including rapidly evolving pathogens, is fast being realized. A new method called the serial-sample unweighted pair grouping method with arithmetic

  13. Dilution in massive, elliptical galaxies.

    NASA Astrophysics Data System (ADS)

    Yates, R. M.; Kauffmann, G.

    We present a recent study of massive galaxies in the Munich semi-analytic model of galaxy formation and the SDSS-DR7. We find that massive, elliptical galaxies with low-sSFR and low gas-phase metallicity (Zg) are undergoing a gradual dilution in the model, via accretion of metal-poor cold gas clumps and merging satellites \\citep{YK13}. Indirect signatures of this evolution are also found in these systems' analogues in the SDSS-DR7, such as lower gas fractions, older ages (from the Dn4000 index), and lower Zg-Z*. This provides strong evidence that such a gradual dilution could also be occurring in massive, elliptical galaxies in the real Universe. These findings have consequences for the fundamental metallicity relation (FMR) at z=0, as they provide an explanation for the positive correlation between SFR and Zg seen in some observational studies (e.g. \\citealt{YKG12}). Such a correlation is not considered in the FMR, meaning that its shape at z=0 is not as simple as first thought, and cannot be accurately fit by a simple 2D projection.

  14. A Microgravity Helium Dilution Cooler

    NASA Technical Reports Server (NTRS)

    Roach, Pat R.; Sperans, Joel (Technical Monitor)

    1994-01-01

    We are developing a He-3-He-4 dilution cooler to operate in microgravity. It uses charcoal adsorption pumps and heaters for its operation; it has no moving parts. It currently operates cyclically to well below 0.1 K and we have designed a version to operate continuously. We expect that the continuous version will be able to provide the long-duration cooling that many experiments need at temperatures down to 0.040 K. More importantly, such a dilution cooler could provide the precooling that enables the use of adiabatic demagnetization techniques that can reach temperatures below 0.001 K. At temperatures below 0.002 K many fascinating microgravity experiments on superfluid He-3 become possible. Among the possibilities are: research into a superfluid He-3 gyroscope, study of the nucleation of the B-phase of superfluid He-3 when the sample is floating out of contact with walls, study of the anisotropy of the surface tension of the B-phase, and NMR experiments on tiny free-floating clusters of superfluid He-3 atoms that should model the shell structure of nuclei.

  15. Charge-coupled-device parallel-to-serial converter

    NASA Technical Reports Server (NTRS)

    Tower, John R. (Inventor)

    1987-01-01

    A CCD parallel-to-serial converter comprising two successions of charge transfer stages, recurrently side-loaded with respective ones of parallelly supplied charge packets, then serially unloaded by time-interleaved respective shift register operations. The charge packets converted to time-division-multiplexed serial form are supplied to a shared electrometer, and the electrometer response is de-multiplexed. Preferably, shift register operations are carried forward concurrently at the same rate, but with the final charge transfer stages clocked in phases staggered in time.

  16. Serial femtosecond crystallography: the first five years.

    PubMed

    Schlichting, Ilme

    2015-03-01

    Protein crystallography using synchrotron radiation sources has had a tremendous impact on biology, having yielded the structures of thousands of proteins and given detailed insight into their mechanisms. However, the technique is limited by the requirement for macroscopic crystals, which can be difficult to obtain, as well as by the often severe radiation damage caused in diffraction experiments, in particular when using tiny crystals. To slow radiation damage, data collection is typically performed at cryogenic temperatures. With the advent of free-electron lasers (FELs) capable of delivering extremely intense femtosecond X-ray pulses, this situation appears to be remedied, allowing the structure determination of undamaged macromolecules using either macroscopic or microscopic crystals. The latter are exposed to the FEL beam in random orientations and their diffraction data are collected at cryogenic or room temperature in a serial fashion, since each crystal is destroyed upon a single exposure. The new approaches required for crystal growth and delivery, and for diffraction data analysis, including de novo phasing, are reviewed. The opportunities and challenges of SFX are described, including applications such as time-resolved measurements and the analysis of radiation damage-prone systems. PMID:25866661

  17. Serial femtosecond crystallography: the first five years

    PubMed Central

    Schlichting, Ilme

    2015-01-01

    Protein crystallography using synchrotron radiation sources has had a tremendous impact on biology, having yielded the structures of thousands of proteins and given detailed insight into their mechanisms. However, the technique is limited by the requirement for macroscopic crystals, which can be difficult to obtain, as well as by the often severe radiation damage caused in diffraction experiments, in particular when using tiny crystals. To slow radiation damage, data collection is typically performed at cryogenic temperatures. With the advent of free-electron lasers (FELs) capable of delivering extremely intense femtosecond X-ray pulses, this situation appears to be remedied, allowing the structure determination of undamaged macromolecules using either macroscopic or microscopic crystals. The latter are exposed to the FEL beam in random orientations and their diffraction data are collected at cryogenic or room temperature in a serial fashion, since each crystal is destroyed upon a single exposure. The new approaches required for crystal growth and delivery, and for diffraction data analysis, including de novo phasing, are reviewed. The opportunities and challenges of SFX are described, including applications such as time-resolved measurements and the analysis of radiation damage-prone systems. PMID:25866661

  18. Band anticrossing in dilute nitrides

    SciTech Connect

    Shan, W.; Yu, K.M.; Walukiewicz, W.; Wu, J.; Ager III, J.W.; Haller, E.E.

    2003-12-23

    Alloying III-V compounds with small amounts of nitrogen leads to dramatic reduction of the fundamental band-gap energy in the resulting dilute nitride alloys. The effect originates from an anti-crossing interaction between the extended conduction-band states and localized N states. The interaction splits the conduction band into two nonparabolic subbands. The downward shift of the lower conduction subband edge is responsible for the N-induced reduction of the fundamental band-gap energy. The changes in the conduction band structure result in significant increase in electron effective mass and decrease in the electron mobility, and lead to a large enhance of the maximum doping level in GaInNAs doped with group VI donors. In addition, a striking asymmetry in the electrical activation of group IV and group VI donors can be attributed to mutual passivation process through formation of the nearest neighbor group-IV donor nitrogen pairs.

  19. Desynchronization in diluted neural networks

    SciTech Connect

    Zillmer, Ruediger [INFN Sezione Firenze, via Sansone 1, I-50019 Sesto Fiorentino (Italy); Livi, Roberto [Dipartimento di Fisica, Universita di Firenze, via Sansone 1, I-50019 Sesto Fiorentino (Italy); Sezione INFN, Unita' INFM e Centro Interdipartimentale per lo Studio delle Dinamiche Complesse, via Sansone 1, I-50019 Sesto Fiorentino (Italy); Politi, Antonio; Torcini, Alessandro [Istituto dei Sistemi Complessi, CNR, CNR, via Madonna del Piano 10, I-50019 Sesto Fiorentino (Italy); Centro Interdipartimentale per lo Studio delle Dinamiche Complesse, via Sansone 1, I-50019 Sesto Fiorentino (Italy)

    2006-09-15

    The dynamical behavior of a weakly diluted fully inhibitory network of pulse-coupled spiking neurons is investigated. Upon increasing the coupling strength, a transition from regular to stochasticlike regime is observed. In the weak-coupling phase, a periodic dynamics is rapidly approached, with all neurons firing with the same rate and mutually phase locked. The strong-coupling phase is characterized by an irregular pattern, even though the maximum Lyapunov exponent is negative. The paradox is solved by drawing an analogy with the phenomenon of 'stable chaos', i.e., by observing that the stochasticlike behavior is 'limited' to an exponentially long (with the system size) transient. Remarkably, the transient dynamics turns out to be stationary.

  20. Serial Echocardiographic Evaluation of 22 Closely Related Great Danes 

    E-print Network

    Farmer, Michael R.

    2010-07-14

    Objectives: The purpose of this study was to investigate a family of Great Danes with known dilated cardiomyopathy (DCM) using serial echocardiographic evaluation. Animals, Materials, and Methods: Twenty-two dogs were included in this study...

  1. A tactical planning model for a serial flow manufacturing system

    E-print Network

    Huang, Bin, S.M. Massachusetts Institute of Technology

    2010-01-01

    This project aims to improve the operation and planning of a specific type of manufacturing system, a serial flow line that entails a sequence of process stages. The objective is to investigate inventory policy, raw material ...

  2. Bibliographic Control of Serial Publications: ISDS and ISBD(S)

    ERIC Educational Resources Information Center

    Bouffez, F.; Grousseaud, A.

    1978-01-01

    A comparison of the International Serials Data System within the UNISIST framework to the IFLA sponsored International Standard Bibliographic Description draws attention to the complementary nature of the two systems. (Author/JAB)

  3. Fast Grasp Contact Computation for a Serial Robot

    NASA Technical Reports Server (NTRS)

    Shi, Jianying (Inventor); Hargrave, Brian (Inventor); Diftler, Myron A. (Inventor)

    2015-01-01

    A system includes a controller and a serial robot having links that are interconnected by a joint, wherein the robot can grasp a three-dimensional (3D) object in response to a commanded grasp pose. The controller receives input information, including the commanded grasp pose, a first set of information describing the kinematics of the robot, and a second set of information describing the position of the object to be grasped. The controller also calculates, in a two-dimensional (2D) plane, a set of contact points between the serial robot and a surface of the 3D object needed for the serial robot to achieve the commanded grasp pose. A required joint angle is then calculated in the 2D plane between the pair of links using the set of contact points. A control action is then executed with respect to the motion of the serial robot using the required joint angle.

  4. Pauses and durations exhibit a serial position effect.

    PubMed

    Haberlandt, Karl; Lawrence, Holly; Krohn, Talia; Bower, Katherine; Thomas, J Graham

    2005-02-01

    This article reports evidence of two kinds of serial position effects in immediate serial recall: One involves interresponse pauses, and the other response durations. In forward and backward recall, responding was faster at initial and final positions than at center positions, exhibitinga bow-shaped function relative to serial position. These data were obtained in a spoken recall study in which ungrouped lists of four to six words and postcuing of recall direction were used. The pause pattern is consistent with several models of serial memory, including a distinctiveness model (Brown, Neath, & Chater, 2002) and a version of the ACT-R model augmented with a spontaneous grouping strategy (Maybery, Parmentier, & Jones, 2002). The duration pattern suggests that response articulation depends on the processing context, rather than being modular. PMID:15945208

  5. A bit-serial RISC architecture for MIMD computing

    E-print Network

    Troy, Kevin Michael

    1993-01-01

    is a unique combination of RISC design concepts, bit- serial computation and communication, and an MIMD organization implemented at a level of hardware complexity between the pipelined microprocessor and the programmable gate array. This is a desirable...

  6. Normalcy in Behavioral Characteristics of the Sadistic Serial Killer

    Microsoft Academic Search

    Jack Levin; James Alan Fox

    Sadistic serial killers have been widely diagnosed as sociopaths who are lacking in empathy and inordinately concerned with\\u000a impression management. We propose instead that many of the behavioral characteristics thought to be distinctive of these serial\\u000a murderers are actually shared widely with millions of people who never kill anyone. By focusing so much on sociopathic characteristics,\\u000a researchers may have downplayed

  7. Error detection techniques in bit-serial multiplication 

    E-print Network

    Brosnan, Thomas Joseph

    1983-01-01

    important to provide assurance that the results are correct. Widely used codes for data transmission and storage are not adequate for this purpose since the properties ot these codes are not preserved by normal arithmetic operations. Arithmetic codes..., however, are available to check arithmetic operations such as addition and multiplication. Low-cost residue codes are applied to three different error detection architectures for both serial-parallel ano fully bit-serial processing elements. Both...

  8. A microcomputer package for serial and nonserial integral dynamic programming

    E-print Network

    Wan, Yat-Wah

    1986-01-01

    A MICROCOMPUTER PACKAGE FOR SERIAL AND NONSERIAL INTEGRAL DYNAMIC PROGRAMMING A Thesis by YAT ? WAH WAN Submitted to the Graduate College of Texas ASSAM University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE May 1986 Major Subject: Industrial Engineering A MICROCOMPUTER PACKAGE FOR SERIAL AND NONSERIAL INTEGRAL DYNAMIC PROGRAMMING A Thesis by YAT - WAH WAN Approved as to style and content by y L. Curry (Chai man of Committee) Alberto Garcia...

  9. Serial stimuli in the acquisition of discriminated avoidance

    E-print Network

    Hildbrand, Mary Kathleen

    1971-01-01

    instead of terminated with the onset of a subsequent stimulus; NCS was a noncontingent control group which was shocked 20-, 30- or 40-sec, randomized, following the termination of a three-component serial compound program. Again, Ss of serial stimuli... all trials. Twelve of these Ss wsra eliminated due to apparatus failure and experimenter error. Ss were housed two to a cage and were handled for two minutes on a biweekly basis ~ ~ttttt ~ The shuttlebox (Lahigh Valley model 146&6), coaetructel...

  10. Valproic acid toxicokinetics: serial hemodialysis and hemoperfusion.

    PubMed

    Franssen, E J; van Essen, G G; Portman, A T; de Jong, J; Go, G; Stegeman, C A; Uges, D R

    1999-06-01

    The toxicity and pharmacokinetic properties of a drug determine whether hemodialysis and/or hemoperfusion are indicated in acute intoxications. Valproic acid is considered unremovable by hemodialysis because of the high protein binding of 90%-95%. A 27-year-old male with a history of seizures was admitted to the emergency room because of coma, hypernatriemia, and respiratory failure caused by an intoxication with a large dose of valproic acid. At admission, the plasma valproic acid level was 1414 mg/L (9.9 mmol/L) (therapeutic range: 50-100 mg/L (350-700 micromol/ L). The anion gap was 26 mmol/L (normal <12-14 mmol/L) and corresponded fairly well with this valproic acid level. Because of the potential toxicity of this high valproic acid level serial hemodialysis and hemoperfusion was performed. The first session was done with a charcoal column and the second session with a resin column. The patient recovered during the course of treatment. The valproic acid plasma clearances during treatment were: 80 mL/min (hemodialysis); 40 mL/min (hemoperfusion by charcoal) and 80 mL/min (hemoperfusion by resin, only in the first hour). The protein binding of valproic acid in plasma was only 32% at the start and was 54% at the end of the two sessions. In this specific case of a severe valproic acid intoxication, saturated protein binding resulted in an increased fraction of unbound valproic acid. This made hemodialysis an effective treatment, while hemoperfusion was relatively less effective because of saturation of the column. In conclusion, the toxicokinetics of valproate are quite different from the pharmacokinetics at therapeutic levels. The anion gap and protein binding are important parameters in toxicokinetics. PMID:10365638

  11. Defining and classifying serial murder in the context of perpetrator motivation

    Microsoft Academic Search

    Christopher J. Ferguson; Diana E. White; Stacey Cherry; Marta Lorenz; Zhara Bhimani

    2003-01-01

    The last several decades have seen increased research attention to the subject of serial murder. Unfortunately, an empirical understanding of serial homicide continues to be impeded by difficulties in establishing a working definition for serial murder. Current definitions for serial homicide tend to focus on frequency and timing of homicide behaviors, and thus leave some confusion as to which groups

  12. Antimicrobial activity of a food-grade fully dilutable microemulsion against Escherichia coli and Staphylococcus aureus.

    PubMed

    Zhang, Hui; Shen, Yan; Weng, Peifang; Zhao, Guoqun; Feng, Fengqin; Zheng, Xiaodong

    2009-11-15

    Microemulsions are colloidal nanodispersions of oil and water stabilized by an interfacial film of surfactant molecules, typically in conjunction with a cosurfactant. There is a limited number of reports in the literature on microemulsion use for antimicrobial purposes. The physicochemical characterization of a food-grade fully dilutable microemulsion system with glycerol monolaurate (GML) as oil, organic acids as cosurfactant, Tween 80 as surfactant, and the antimicrobial activities against Escherichia coli and Staphylococcus aureus have been studied in this paper. The influence of organic acids on oil solubilization was clearly reflected in the phase behavior of these systems. Propionic acid demonstrated the greatest capability to improve the oil solubilization among the tested linear and nonlinear chain organic acids and contributed to the formation of U-type microemulsion systems. One microemulsion formulation with an average particle size of 8nm was selected, the composition is GML/propionic acid/Tween 80/water=3:9:8:12. The kinetics of killing experiments demonstrated that the undiluted microemulsion caused a complete loss of viability of E. coli or S. aureus cells in 1min and still had effective bactericidal effects even when diluted, more than 99% viable E. coli cells were killed within 15min and a complete loss of viability was achieved at 45min while more than 99% viable S. aureus cells were killed within 30min and a complete loss of viability was achieved at 60min in the presence of the 10-fold diluted microemulsion. The fast killing kinetics of the ten-fold serial dilutions of microemulsions were in good agreement with the mode of action studies, indicating that the interaction between the antimicrobial microemulsions and bacterial membranes significantly decreased the bacterial cell surface hydrophobicity and induced the quick release of 260nm absorbing materials. This work suggests the potential use of food-grade fully dilutable microemulsions for antimicrobial purposes in beverages or seafood products. PMID:19717202

  13. DAVINCI a Dilute Aperture Coronagraph

    NASA Astrophysics Data System (ADS)

    Shao, Michael

    2009-01-01

    The motivation for DAVINCI was originally to make use of the technology developed for space interferometers like SIM to build a coronagraph from four 1.1m telescopes that was dramatically lower in cost than a 4 5m filled aperture offaxis coronagraph. Our initial studies through team X have shown this cost savings to be real. But a more careful analysis showed that DAVINCI would have an inner working angle of 35mas a factor of 2 smaller than a 2 lambda/D 4 meter coronagraph or 70m external occulter, resulting in a 10X increase in the number of potential Earth-Clone targets. DAVINCI uses a nulling interferometer as a coronagraph, a nulling interferometer is one the few coronagraph architectures that are compatible with segmented and dilute aperture telescopes. Combined with a post coronagraph wavefront sensor several ultra-demanding tolerances of conventional coronagraphs can be relaxed by factors of 100. The post coronagraph wavefront sensor is also much less affected by local and exozodi background than wavefront sensors that use the science camera as the wavefront sensor. The post coronagraph interferometer is also used on ground based extreme AO coronagraphs, GPI, and P1640.

  14. The relationship between serial sexual murder and autoerotic asphyxiation.

    PubMed

    Myers, Wade C; Bukhanovskiy, Alexandr; Justen, Elle; Morton, Robert J; Tilley, John; Adams, Kenneth; Vandagriff, Virgil L; Hazelwood, Robert R

    2008-04-01

    This case series documents and examines the association between autoerotic asphyxiation, sadomasochism, and serial sexual murderers. Autoerotic asphyxiation, along with other paraphilias found in this population, is reviewed. Five cases of serial sexual killers who engaged in autoerotic asphyxiation were identified worldwide: four from the United States and one from Russia. Case reports for each are provided. All (100%) were found to have sexual sadism in addition to autoerotic asphyxiation. Furthermore, two (40%) had bondage fetishism, and two (40%) had transvestic fetishism, consistent with these paraphilias co-occurring in those with autoerotic asphyxiation. Overall the group averaged 4.0 lifetime paraphilias. Some possible relationships were observed between the offenders' paraphilic orientation and their modus operandi, e.g., all of these serial killers strangled victims-suggesting an association between their sadistic and asphyxiative paraphilic interests. The overlap of seemingly polar opposite paraphilias in this sample--sexual sadism and autoerotic asphyxiation--is explored from a historical and clinical perspective. Multiple commonalities shared between these five offenders and serial sexual murderers in general are addressed. A primary limitation of this study is its small sample size and empirical basis; the results may not be generalizable beyond the sample. The findings from this study support the supposition that crime scene behaviors often reflect paraphilic disturbances in those who commit serial sexual homicides. PMID:17980531

  15. Hardware Implementation of Serially Concatenated PPM Decoder

    NASA Technical Reports Server (NTRS)

    Moision, Bruce; Hamkins, Jon; Barsoum, Maged; Cheng, Michael; Nakashima, Michael

    2009-01-01

    A prototype decoder for a serially concatenated pulse position modulation (SCPPM) code has been implemented in a field-programmable gate array (FPGA). At the time of this reporting, this is the first known hardware SCPPM decoder. The SCPPM coding scheme, conceived for free-space optical communications with both deep-space and terrestrial applications in mind, is an improvement of several dB over the conventional Reed-Solomon PPM scheme. The design of the FPGA SCPPM decoder is based on a turbo decoding algorithm that requires relatively low computational complexity while delivering error-rate performance within approximately 1 dB of channel capacity. The SCPPM encoder consists of an outer convolutional encoder, an interleaver, an accumulator, and an inner modulation encoder (more precisely, a mapping of bits to PPM symbols). Each code is describable by a trellis (a finite directed graph). The SCPPM decoder consists of an inner soft-in-soft-out (SISO) module, a de-interleaver, an outer SISO module, and an interleaver connected in a loop (see figure). Each SISO module applies the Bahl-Cocke-Jelinek-Raviv (BCJR) algorithm to compute a-posteriori bit log-likelihood ratios (LLRs) from apriori LLRs by traversing the code trellis in forward and backward directions. The SISO modules iteratively refine the LLRs by passing the estimates between one another much like the working of a turbine engine. Extrinsic information (the difference between the a-posteriori and a-priori LLRs) is exchanged rather than the a-posteriori LLRs to minimize undesired feedback. All computations are performed in the logarithmic domain, wherein multiplications are translated into additions, thereby reducing complexity and sensitivity to fixed-point implementation roundoff errors. To lower the required memory for storing channel likelihood data and the amounts of data transfer between the decoder and the receiver, one can discard the majority of channel likelihoods, using only the remainder in operation of the decoder. This is accomplished in the receiver by transmitting only a subset consisting of the likelihoods that correspond to time slots containing the largest numbers of observed photons during each PPM symbol period. The assumed number of observed photons in the remaining time slots is set to the mean of a noise slot. In low background noise, the selection of a small subset in this manner results in only negligible loss. Other features of the decoder design to reduce complexity and increase speed include (1) quantization of metrics in an efficient procedure chosen to incur no more than a small performance loss and (2) the use of the max-star function that allows sum of exponentials to be computed by simple operations that involve only an addition, a subtraction, and a table lookup. Another prominent feature of the design is a provision for access to interleaver and de-interleaver memory in a single clock cycle, eliminating the multiple clock-cycle latency characteristic of prior interleaver and de-interleaver designs.

  16. Energy data base. Serial titles with ISSN listing

    SciTech Connect

    Hendricks, P.L. (ed.)

    1984-03-01

    This issue of Serial Titles with ISSN Listing is the first revision of DOE/TIC-4579 to include the International Standard Serial Number (ISSN) for journals. The TIC journal authority was established to bring about conformity in citing the approximately 16,000 titles contained in this authority. It can prove to be a valuable tool in establishing the precise journal by ISSN and CODEN indication, especially for journals with the same title published in different locations. Serial Titles with ISSN Listing is comprised of two parts. Part 1 is an alphabetical listing by full title of the publication and also includes abbreviated title, CODEN, ISSN, coverage code, and country code. Part 2 is an ISSN-title correlation arranged in numeric order by ISSN and also includes the CODEN and full title.

  17. Towards time-resolved serial crystallography in a microfluidic device.

    PubMed

    Pawate, Ashtamurthy S; Šrajer, Vukica; Schieferstein, Jeremy; Guha, Sudipto; Henning, Robert; Kosheleva, Irina; Schmidt, Marius; Ren, Zhong; Kenis, Paul J A; Perry, Sarah L

    2015-07-01

    Serial methods for crystallography have the potential to enable dynamic structural studies of protein targets that have been resistant to single-crystal strategies. The use of serial data-collection strategies can circumvent challenges associated with radiation damage and repeated reaction initiation. This work utilizes a microfluidic crystallization platform for the serial time-resolved Laue diffraction analysis of macroscopic crystals of photoactive yellow protein (PYP). Reaction initiation was achieved via pulsed laser illumination, and the resultant electron-density difference maps clearly depict the expected pR1/pRE46Q and pR2/pRCW states at 10?µs and the pB1 intermediate at 1?ms. The strategies presented here have tremendous potential for extension to chemical triggering methods for reaction initiation and for extension to dynamic, multivariable analyses. PMID:26144226

  18. In situ serial Laue diffraction on a microfluidic crystallization device.

    PubMed

    Perry, Sarah L; Guha, Sudipto; Pawate, Ashtamurthy S; Henning, Robert; Kosheleva, Irina; Srajer, Vukica; Kenis, Paul J A; Ren, Zhong

    2014-12-01

    Renewed interest in room-temperature diffraction has been prompted by the desire to observe structural dynamics of proteins as they function. Serial crystallography, an experimental strategy that aggregates small pieces of data from a large uniform pool of crystals, has been demonstrated at synchrotrons and X-ray free-electron lasers. This work utilizes a microfluidic crystallization platform for serial Laue diffraction from macroscopic crystals and proposes that a collection of small slices of Laue data from many individual crystals is a realistic solution to the difficulties in dynamic studies of irreversible biochemical reactions. PMID:25484843

  19. Tumoral calcinosis: Serial images to monitor successful dietary therapy

    SciTech Connect

    Manaster, B.J.; McDowell Anderson, T. Jr.

    1982-05-01

    Tumoral calcinosis involves formation of periarticular calcified soft tissue masses. Experimental evidence suggests a metabolic etiology with dietary restriction of calcium and phosphorus as beneficial therapy. We prospectively monitored serum levels of calcium, phosphorous, alkaline phosphatase, and erythrocyte sedimentation rate (ESR) while successfully treating a patient with tumoral calcinosis. The values were compared with changes on serial radiographic and radionuclide bone and gallium images. Our work suggests using serial serum phosphate levels and the ESR as the most sensitive indications of progress in dietary treatment of tumoral calcinosis.

  20. Recombinant nucleocapsid protein based single serum dilution ELISA for the detection of antibodies to infectious bronchitis virus in poultry.

    PubMed

    Pradhan, Sunil K; Kamble, Nitin M; Pillai, Aravind S; Gaikwad, Satish S; Khulape, Sagar A; Reddy, M R; Mohan, C Madhan; Kataria, Jag Mohan; Dey, Sohini

    2014-12-01

    Avian infectious bronchitis is ubiquitous and highly contagious disease of poultry, with profound effect on commercial poultry production. For effective control of infectious bronchitis virus (IBV), quick and specific diagnosis is of utmost importance. In this study, the virus was isolated from clinical samples from India and the full length nucleocapsid (N) gene was amplified, cloned and expressed in a prokaryotic system. The purified recombinant N protein based single serum dilution enzyme linked immunosorbent assay (ELISA) was developed for IBV to measure specific antibody in the sera of chickens. A total of 310 chicken sera samples were tested using the commercial IDEXX kit along with the assay developed. A linear correlation was obtained between predicted antibody titres at a single working dilution of 1:100 and the corresponding serum titres observed as determined by the standard serial dilution method. Regression analysis was used to construct a standard curve from which an equation was derived which confirmed their correlation. The developed equation was then used to extrapolate predicated ELISA antibody titer from corrected absorbance readings of the single working dilution. The assay proved to be specific (95.8%) and sensitive (96.8%) when compared to the commercial IDEXX ELISA test. PMID:25173423

  1. Union List of Serials in Pacific Island Libraries.

    ERIC Educational Resources Information Center

    Cohen, Arlene G., Comp.; Yoshida, Patricia, Comp.

    This union list contains the serial holdings from Pacific Island libraries, including the University of the South Pacific Library (Fiji), the University of Guam Robert F. Kennedy Library, Guam Public Library, College of Micronesia-FSM Library, College of the Marshall Islands Library, Micronesian Seminar Library, Palau Community College Library,…

  2. Generation of Kidney Transcriptomes Using Serial Analysis of Gene Expression

    Microsoft Academic Search

    Jeffrey R. Schelling; M. Ashraf El-Meanawy; Shrinath Barathan; Tatiana Dodig; Sudha K. Iyengar; John R. Sedor

    2002-01-01

    Chronic renal disease initiation and progression remain incompletely understood. Genomewide expression monitoring should clarify the mechanisms which cause progressive renal disease by determining how clusters of genes coordinately change their activity. Serial analysis of gene expression (SAGE) is a technique of expression profiling which permits simultaneous and quantitative analysis of 9- to 13-bp sequence tags that correspond to unique mRNAs.

  3. Serial Block-Face Scanning Electron Microscopy to Reconstruct

    E-print Network

    Born, Richard

    of a scanning electron microscope. Backscattering contrast is used to visualize the heavy-metal stainingSerial Block-Face Scanning Electron Microscopy to Reconstruct Three-Dimensional Tissue at electron microscopic, and tissue at light-microscopic resolution. A gap exists, however, when 3D tissue

  4. Harmonic Syntax in the "Serial" Works of Dmitri Shostakovich

    E-print Network

    Webber, Miriam Brack

    2013-05-31

    ....................................................18 Andrey Volkonsky .............................................................................................................19 Musica Stricta: Analysis... with Shostakovich: both composers utilize multiple twelve-tone rows. Zachary Cairns’ discussion of multiple rows in the Russian serial music of Andrey Denisov may shed some further light on this phenomenon. Cairns defines the use of multiple rows as more than one...

  5. Picture Detection in Rapid Serial Visual Presentation: Features or Identity?

    ERIC Educational Resources Information Center

    Potter, Mary C.; Wyble, Brad; Pandav, Rijuta; Olejarczyk, Jennifer

    2010-01-01

    A pictured object can be readily detected in a rapid serial visual presentation sequence when the target is specified by a superordinate category name such as "animal" or "vehicle". Are category features the initial basis for detection, with identification of the specific object occurring in a second stage (Evans & Treisman, 2005), or is…

  6. Polymeric Mach-Zehnder interferometer using serially coupled microring resonators

    E-print Network

    Huang, Yanyi

    . The serially coupled rings are modeled using a simple transfer matrix approach. Good agreement is found between in an optical polymer and its spectral characteristics were measured at telecommunications wavelengths the measurement and the theory. 2003 Optical Society of America OCIS codes: (130.0130) Integrated Optics, (130

  7. Serials Management by Microcomputer: The Potential of DBMS.

    ERIC Educational Resources Information Center

    Vogel, J. Thomas; Burns, Lynn W.

    1984-01-01

    Describes serials management at Philadelphia College of Textiles and Science library via a microcomputer, a file manager called PFS, and a relational database management system called dBase II. Check-in procedures, programing with dBase II, "static" and "active" databases, and claim procedures are discussed. Check-in forms are included. (EJS)

  8. Solution of inverse kinematic problem for serial robot using quaterninons

    Microsoft Academic Search

    Emre Sariyildiz; Hakan Temeltas

    2009-01-01

    A new inverse kinematic solution for serial robot manipulators is represented in this paper. Major aims of this paper are to obtain singularity avoiding inverse kinematic solutions and formulize kinematic problems in a compact closed form. Our solution method is based on screw theory and it uses quaternions as a screw motion operator. Screw theory methods based on line transformation.

  9. Serial-to-Parallel Demultiplexing Using WDM Sampling Pulses

    Microsoft Academic Search

    Alan H. Gnauck; Robert M. Jopson; Robert W. Tkach; Colin J. McKinstrie; Stojan Radic

    2009-01-01

    We propose a wavelength-division-multiplexing pump technique to perform serial-to-parallel conversion using a parametric processor. We demonstrate the concept by demultiplexing a 40-Gb\\/s signal into four 10-Gb\\/s signals using four sampling wavelengths and compare performance to electronic demultiplexing.

  10. Dissimilar Items Benefit From Phonological Similarity in Serial Recall

    Microsoft Academic Search

    Simon Farrell; Stephan Lewandowsky

    2003-01-01

    In short-term serial recall, similar sounding items are remembered less well than items that do not sound alike. This phonological similarity effect has been observed with lists composed only of similar items, and also with lists that mix together similar and dissimilar items. An additional consistent finding has been what the authors call dissimilar immunity, the finding that ordered recall

  11. AN INTERACTIVE SOFTWARE PACKAGE FOR THE SIMULATION OF SERIAL MANIPULATORS

    Microsoft Academic Search

    M. A. González-Palacios; E. A. González-Barbosa; L. A. Aguilera-Cortés

    Analysis and synthesis for serial manipulators simulation are important tools for their study and computer control. This paper presents the main features of a comprehensive software package created with the application of these concepts. This software, called SnAP has been developed under the ADEFID framework (1). Integrated with the graphical interface, which is based on OpenGL tools written in C++,

  12. Benchmarking Usage Statistics in Collection Management Decisions for Serials

    ERIC Educational Resources Information Center

    Tucker, Cory

    2009-01-01

    Usage statistics are an important metric for making decisions on serials. Although the University of Nevada, Las Vegas (UNLV) Libraries have been collecting usage statistics, the statistics had not frequently been used to make decisions and had not been included in collection development policy. After undergoing a collection assessment, the…

  13. A MULTIVARIATE ANALYSIS OF SERIAL MURDERERS' DISPOSAL SITE LOCATION CHOICE

    Microsoft Academic Search

    SAMANTHA LUNDRIGAN; DAVID CANTER

    2001-01-01

    The application of environmental psychology principles and findings to the work of criminal investigators is gaining ground. This paper presents one particular application of these principles to the study of those very rare criminals, serial killers. An environmental psychology perspective looks on the rational processes that may underlie these disturbing and highly emotive crimes. For, although the murders committed by

  14. Contributions of Psychiatric Consultation in the Investigation of Serial Murder

    Microsoft Academic Search

    John A. Liebert

    1985-01-01

    This article focusses on enhancing communication between investigative officers assigned to serial murder cases and their psychiatric consultants. In view of the interdisciplinary interest in this topic, it must be pointed out that my purpose in presenting this article is not for the validation of psychiatric diagnosis of psychodynamic formulations. For those who are primarily interested in the validity of

  15. Child serial murder-psychodynamics: closely watched shadows.

    PubMed

    Turco, R

    2001-01-01

    There is a malignant transformation in object relations resulting in an identification with an omnipotent and cruel object resulting in an identity transformation. If the tension, desperation, and dissociation increase, serial murder becomes spree murder. The presence of pathological narcissism and psychopathic tendencies are of diagnostic significance in understanding the murderer's personality functioning and motivation to kill. Meloy (1988) considered the degree of sadism and aggression combined with narcissistic qualities to reflect the "malignancy" of the psychopathic disturbance where gratification (of aggression) occurs in the service of narcissistic functioning--that is, cruelty toward others in the form of a triumphant victory over a rejecting object. Meloy also believes that dissociation is ubiquitious in the psychopath. The initial murder of the serial murderer may reflect a "new identity." The pathological object-relations of narcissism and the malignant narcissism are important diagnostic indicators in the personality functioning of serial killers and the occurrence of these phenomena is a significant factor in the formation of the personalities of serial killers, their inner motivations, and their pattern of commission. PMID:11685995

  16. Problems of the National Library of Medicine Classification for Serials

    ERIC Educational Resources Information Center

    Sophanodorn, Kanchana

    1971-01-01

    A brief history of the development of serial classification patterns from the National Library of Medicine scheme is followed by the enumeration of some of the difficulties encountered by medical libraries attempting to use the scheme. Solutions to the problems utilized by five large medical libraries are described in detail. (6 references)…

  17. Skinny trace compensation methodology for high speed serial interface

    Microsoft Academic Search

    Minhong Mi; Steve Taliaferro; Rajen Murugan; Daniel de Araujo

    2012-01-01

    Skinny trace compensation is a simple yet effective technique for overcoming capacitive impedance discontinuities on high speed channels. This paper provides a comprehensive system-level modeling and analysis methodology for implementing this technique on high speed serial interface. System level simulation correlation to laboratory measurement for the HDMI (High Definition Multimedia Interface) interface on a real high speed low power mobile

  18. Serial Regulation of Transcriptional Regulators in the Yeast Cell Cycle

    Microsoft Academic Search

    Itamar Simon; John Barnett; Nancy Hannett; Christopher T Harbison; Nicola J Rinaldi; Thomas L Volkert; John J Wyrick; Julia Zeitlinger; David K Gifford; Tommi S Jaakkola; Richard A Young

    2001-01-01

    Genome-wide location analysis was used to determine how the yeast cell cycle gene expression program is regulated by each of the nine known cell cycle transcriptional activators. We found that cell cycle transcriptional activators that function during one stage of the cell cycle regulate transcriptional activators that function during the next stage. This serial regulation of transcriptional activators forms a

  19. A methodology for joint stiffness identification of serial robots

    Microsoft Academic Search

    Claire Dumas; Stephane Caro; Mehdi Cherif; Sebastien Garnier; Benoit Furet

    2010-01-01

    This paper presents a new methodology for joint stiffness identification of serial robots. This methodology aims at evaluating all joint stiffness values responsible for both translational and rotational displacements of the robot end-effector subject to an external wrench (force and torque). The links of the robot are supposed to be quite stiffer than the joints and not known as it

  20. Flexible and Reconfigurable Mismatch-Tolerant Serial Clock Distribution Networks

    Microsoft Academic Search

    Atanu Chattopadhyay; Zeljko Zilic

    2012-01-01

    We present a clock distribution network that emphasizes flexibility and layout independence. It suits a variety of applications, clock domain shapes and sizes using a modular, standard cell-based design approach that mitigates the effect of intra-die temperature and process variances. We route the clock line serially, using an averaging technique to eliminate skew between clock regions in a domain. Routing

  1. Counterbalancing for Serial Order Carryover Effects in Experimental Condition Orders

    ERIC Educational Resources Information Center

    Brooks, Joseph L.

    2012-01-01

    Reactions of neural, psychological, and social systems are rarely, if ever, independent of previous inputs and states. The potential for serial order carryover effects from one condition to the next in a sequence of experimental trials makes counterbalancing of condition order an essential part of experimental design. Here, a method is proposed…

  2. Can serial rapists be distinguished from one-off rapists?

    PubMed

    Slater, Chelsea; Woodhams, Jessica; Hamilton-Giachritsis, Catherine

    2014-01-01

    There are investigative advantages to being able to determine early in a police investigation whether a rape has been committed by a serial or a one-off rapist. Previous research has found some differences in the crime-scene behaviors of serial and one-off rapists; however, this research suffers from the limitation of utilizing a sample of rapes within which there was a mixture of victim-offender relationships. To address this limitation, this study sampled 38 serial (two or more convictions) and 50 one-off (one conviction) stranger rapists and compared their crime scene behavior across four domains (control, sex, escape and style behaviors). Serial and one-off rapists differed in some control and sexual behaviors, in particular, in the type of victim targeted, the offense locations, methods of control and the sexual acts forced upon the victim. However, the results did not indicate a striking difference in the offending behavior of the two groups. The implications of these findings for criminal investigations are discussed. PMID:24723507

  3. PLACE, SPACE, AND POLICE INVESTIGATIONS: HUNTING SERIAL VIOLENT CRIMINALS

    Microsoft Academic Search

    D. Kim Rossmo

    Police investigations of serial murder, rape and arson can be assisted by a geographic perspective on the spatial behavior that led to the crime scene. For any crime to occur there must have been an intersection in both time and place between the offender and victim. How did this come to happen? What are the hunting patterns of predatory criminals?

  4. Characteristics of Serial Order Learning in Common Marmosets (Callithrix jacchus)

    Microsoft Academic Search

    Reiko Koba; Atsushi Takemoto; Miki Miwa; Katsuki Nakamura

    2012-01-01

    We investigated the characteristics of serial order learning in common marmosets (Callithrix jacchus). Five marmosets were trained in a sequential responding task in which they were required to touch four graphic patterns in a given order (A?B?C?D) to obtain a reward. All five marmosets learned the task with over 65% accuracy. Shuffling the positions of B, C, and D immediately

  5. The Ubiquitin-Conjugating Enzyme, UbcM2, Is Restricted to Monoubiquitylation by a Two-Fold Mechanism That Involves Backside Residues of E2 and Lys48 of Ubiquitin

    PubMed Central

    2015-01-01

    Proteins can be modified on lysines (K) with a single ubiquitin (Ub) or with polymers of Ub (polyUb). These different configurations and their respective topologies are primary factors for determining whether substrates are targeted to the proteasome for degradation or directed to nonproteolytic outcomes. We report here on the intrinsic ubiquitylation properties of UbcM2 (UBE2E3/UbcH9), a conserved Ub-conjugating enzyme linked to cell proliferation, development, and the cellular antioxidant defense system. Using a fully recombinant ubiquitylation assay, we show that UbcM2 is severely limited in its ability to synthesize polyUb chains with wild-type Ub. Restriction to monoubiquitylation is governed by multiple residues on the backside of the enzyme, far removed from its active site, and by lysine 48 of Ub. UbcM2 with mutated backside residues can synthesize K63-linked polyUb chains and to a lesser extent K6- and K48-linked chains. Additionally, we identified a single residue on the backside of the enzyme that promotes monoubiquitylation. Together, these findings reveal that a combination of noncatalytic residues within the Ubc catalytic core domain of UbcM2 as well as a lysine(s) within Ub can relegate a Ub-conjugating enzyme to monoubiquitylate its cognate targets despite having the latent capacity to construct polyUb chains. The two-fold mechanism for restricting activity to monoubiquitylation provides added insurance that UbcM2 will not build polyUb chains on its substrates, even under conditions of high local Ub concentrations. PMID:24901938

  6. Total body skeletal muscle mass: estimation by creatine (methyl-d3) dilution in humans

    PubMed Central

    Walker, Ann C.; O'Connor-Semmes, Robin L.; Leonard, Michael S.; Miller, Ram R.; Stimpson, Stephen A.; Turner, Scott M.; Ravussin, Eric; Cefalu, William T.; Hellerstein, Marc K.; Evans, William J.

    2014-01-01

    Current methods for clinical estimation of total body skeletal muscle mass have significant limitations. We tested the hypothesis that creatine (methyl-d3) dilution (D3-creatine) measured by enrichment of urine D3-creatinine reveals total body creatine pool size, providing an accurate estimate of total body skeletal muscle mass. Healthy subjects with different muscle masses [n = 35: 20 men (19–30 yr, 70–84 yr), 15 postmenopausal women (51–62 yr, 70–84 yr)] were housed for 5 days. Optimal tracer dose was explored with single oral doses of 30, 60, or 100 mg D3-creatine given on day 1. Serial plasma samples were collected for D3-creatine pharmacokinetics. All urine was collected through day 5. Creatine and creatinine (deuterated and unlabeled) were measured by liquid chromatography mass spectrometry. Total body creatine pool size and muscle mass were calculated from D3-creatinine enrichment in urine. Muscle mass was also measured by magnetic resonance imaging (MRI), dual-energy x-ray absorptiometry (DXA), and traditional 24-h urine creatinine. D3-creatine was rapidly absorbed and cleared with variable urinary excretion. Isotopic steady-state of D3-creatinine enrichment in the urine was achieved by 30.7 ± 11.2 h. Mean steady-state enrichment in urine provided muscle mass estimates that correlated well with MRI estimates for all subjects (r = 0.868, P < 0.0001), with less bias compared with lean body mass assessment by DXA, which overestimated muscle mass compared with MRI. The dilution of an oral D3-creatine dose determined by urine D3-creatinine enrichment provides an estimate of total body muscle mass strongly correlated with estimates from serial MRI with less bias than total lean body mass assessment by DXA. PMID:24764133

  7. Total body skeletal muscle mass: estimation by creatine (methyl-d3) dilution in humans.

    PubMed

    Clark, Richard V; Walker, Ann C; O'Connor-Semmes, Robin L; Leonard, Michael S; Miller, Ram R; Stimpson, Stephen A; Turner, Scott M; Ravussin, Eric; Cefalu, William T; Hellerstein, Marc K; Evans, William J

    2014-06-15

    Current methods for clinical estimation of total body skeletal muscle mass have significant limitations. We tested the hypothesis that creatine (methyl-d3) dilution (D3-creatine) measured by enrichment of urine D3-creatinine reveals total body creatine pool size, providing an accurate estimate of total body skeletal muscle mass. Healthy subjects with different muscle masses [n = 35: 20 men (19-30 yr, 70-84 yr), 15 postmenopausal women (51-62 yr, 70-84 yr)] were housed for 5 days. Optimal tracer dose was explored with single oral doses of 30, 60, or 100 mg D3-creatine given on day 1. Serial plasma samples were collected for D3-creatine pharmacokinetics. All urine was collected through day 5. Creatine and creatinine (deuterated and unlabeled) were measured by liquid chromatography mass spectrometry. Total body creatine pool size and muscle mass were calculated from D3-creatinine enrichment in urine. Muscle mass was also measured by magnetic resonance imaging (MRI), dual-energy x-ray absorptiometry (DXA), and traditional 24-h urine creatinine. D3-creatine was rapidly absorbed and cleared with variable urinary excretion. Isotopic steady-state of D3-creatinine enrichment in the urine was achieved by 30.7 ± 11.2 h. Mean steady-state enrichment in urine provided muscle mass estimates that correlated well with MRI estimates for all subjects (r = 0.868, P < 0.0001), with less bias compared with lean body mass assessment by DXA, which overestimated muscle mass compared with MRI. The dilution of an oral D3-creatine dose determined by urine D3-creatinine enrichment provides an estimate of total body muscle mass strongly correlated with estimates from serial MRI with less bias than total lean body mass assessment by DXA. PMID:24764133

  8. 48 CFR 211.274-5 - Policy for assignment of Government-assigned serial numbers.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ...2010-10-01 false Policy for assignment of Government-assigned serial... 211.274-5 Policy for assignment of Government-assigned serial numbers. It is DoD policy that contractors apply Government-assigned...

  9. 75 FR 52917 - Defense Federal Acquisition Regulation Supplement (DFARS); Warranty Tracking of Serialized Items...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-30

    ...by revising the clause date to read ``(XXX 2010)'' and, at paragraph (a), by...Warranty Tracking of Serialized Items (XXX 2010) (a) Definition. ``Unique item...Warranty Tracking of Serialized Items (XXX 2010) (a) Definitions. As used in...

  10. Mossbauer effect in dilute iron alloys

    NASA Technical Reports Server (NTRS)

    Singh, J. J.

    1975-01-01

    The effects of variable concentration, x, of Aluminum, Germanium, and Lanthanum atoms in Iron lattice on various Mossbauer parameters was studied. Dilute binary alloys of (Fe-Al), (Fe-Ge), (Fe-Al) containing up to x = 2 a/o of the dilute constituent were prepared in the form of ingots and rolled to a thickness of 0.001 in. Mossbauer spectra of these targets were then studied in transmission geometry to measure changes in the hyperfine field, peak widths isomer shifts as well as the ratio of the intensities of peaks (1,6) to the intensities of peaks (2,5). It was shown that the concept of effective hyperfine structure field in very dilute alloys provides a useful means of studying the effects of progressively increasing the solute concentration on host lattice properties.

  11. A systematic approach for design of digit-serial signal processing architectures

    Microsoft Academic Search

    Keshab K. Parhi

    1991-01-01

    A systematic unfolding transformation technique for transforming bit-serial architecture into equivalent digit-serial ones is presented. The novel feature of the unfolding technique lies in the generation of functionally correct control circuits in the digit-serial architectures. For some applications bit-serial architectures may be too slow, and bit-parallel architectures may be faster than necessary and may require too much hardware. The desired

  12. ARE PARALLEL ROBOTS MORE ACCURATE THAN SERIAL ROBOTS? Sbastien Briot and Ilian A. Bonev

    E-print Network

    Paris-Sud XI, Université de

    ARE PARALLEL ROBOTS MORE ACCURATE THAN SERIAL ROBOTS? Sébastien Briot and Ilian A. Bonev _____________________________________________________________________________ ABSTRACT It is widely claimed that parallel robots are intrinsically more accurate than serial robots of serial- parallel 2-DOF planar robots. Only input errors are considered and all robots are optimized

  13. In vitro antibacterial and anti-inflammatory effects of honokiol and magnolol against Propionibacterium sp

    Microsoft Academic Search

    Junho Park; Jongsung Lee; Eunsun Jung; Yumi Park; Kukhyun Kim; Kwangseon Jung; Jieun Kim

    2004-01-01

    Honokiol and magnolol, two major phenolic constituents of Magnolia sp., have been known to exhibit antibacterial activities. However, until now, their antibacterial activity against Propionibacterium sp. has not been reported. To this end, the antibacterial activities of honokiol and magnolol were detected using the disk diffusion method and a two-fold serial dilution assay. Honokiol and magnolol showed strong antibacterial activities

  14. Science Sampler: Dilution, Concentration, and Flotation

    NSDL National Science Digital Library

    Joseph S. Schmuckler

    2004-04-01

    Classroom teaching practice and literature show that many students have difficulties with science concepts such as density. These investigations identify the relationship between density and floating through experimenting with successive dilution of a liquid, or the systematic change of concentration of a saltwater solution. The lessons follow the constructivist teaching model--invitation, exploration, proposing explanations, and taking action.

  15. Automatic dilution gaging of rapidly varying flow

    USGS Publications Warehouse

    Duerk, M.D.

    1983-01-01

    Obtaining discharge ratings at urban gaging stations is often difficult. Results of using an automated constant-rate dye-dilution technique to measure discharge at two sites in Madison, Wisconsin, are presented. The sites selected have well-defined stage-discharge ratings, developed during previous hydrologic studies. One site is a 60-inch-diameter concrete storm sewer and the other a concrete-lined open trapezoidal channel. Equipment selected to automate the method included a portable automatic water sampler, four-channel event recorder; and for dye injection, a peristaltic pump. An electrical switching circuit was designed to coordinate the operation of the water sampler, injection pump, and four-channel recorder. During the data-collection period of 1 year, a total of 20 storms was monitored. The analyses showed that the discharges measured by dye-dilution techniques ranged from + or - 5 to + or - 10 percent of the discharges determined from ratings established by current-meter measurements. Larger differences were noted at the start of and on the rising limb of four hydrographs. Of the 20 storms monitored, 17 produced acceptable results. Peak discharges by the dilution method at the open-channel site ranged from 0 to 12 percent departures from the existing rating, whereas the peak discharge by the dilution method at the storm-sewer site ranged from 0 to 5 percent departures from the existing rating. (UGGS)

  16. Polaron Percolation in Diluted Magnetic Semiconductors

    Microsoft Academic Search

    A. Kaminski; S. Das Sarma

    2002-01-01

    We theoretically study the development of spontaneous magnetization in diluted magnetic semiconductors as arising from a percolation of bound magnetic polarons. Within the framework of a generalized percolation theory we derive analytic expressions for the Curie temperature and the magnetization in the limit of low carrier density, obtaining excellent quantitative agreement with Monte Carlo simulation results and good qualitative agreement

  17. Sulfuric Acid and Water: Paradoxes of Dilution

    ERIC Educational Resources Information Center

    Leenson, I. A.

    2004-01-01

    On equilibrium properties of aqueous solutions of sulfuric acid, Julius Thomsen has marked that the heat evolved on diluting liquid sulfuric acid with water is a continuous function of the water used, and excluded absolutely the acceptance of definite hydrates as existing in the solution. Information about thermochemical measurement, a discussion…

  18. Resistance Minimum in Dilute Magnetic Alloys

    Microsoft Academic Search

    Jun Kondo

    1964-01-01

    Based on the s-d interaction model for dilute magnetic alloys we have calculated the scattering probability of the conduction electrons to the second Born approximation. Because of the dynamical character of the localized spin system, the Pauli principle should be taken into account in the intermediate states of the second order terms. Thus the effect of the Fermi sphere is

  19. Dilute acid hydrolysis of lignocellulosic biomass

    Microsoft Academic Search

    P. Lenihan; A. Orozco; E. O’Neill; M. N. M. Ahmad; D. W. Rooney; G. M. Walker

    2010-01-01

    The overall aim of this work was to establish the optimum conditions for acid hydrolysis of hemicellulosic biomass in the form of potato peel. The hydrolysis reaction was undertaken in a 1l high pressure pilot batch reactor using dilute phosphoric acid. Analysis of the decomposition rate of hemicellulosic biomass (namely Cellulose, Hemicellulose and lignin) was undertaken using HPLC of the

  20. Surface Pretreatment Based On Dilute Hexafluorozirconic Acid

    Microsoft Academic Search

    Y. Zhai; Z. Zhao; G. S. Frankel; J. Zimmerman; T. Bryden; W. Fristad

    Two surface pretreatments based on dilute hexafluorozirconic acid (FZ) solution, a simple FZ and a modified FZ or MFZ, were studied as replacements for the phosphating process. The FZ conversion coatings were deposited on cold rolled steel (CRS) substrates by immersion treatment. AFM images reveal that the coating surface exhibited small features tens of nm in size and clusters of

  1. LAKE RESTORATION BY DILUTION: MOSES LAKE, WASHINGTON

    EPA Science Inventory

    Dilution water, low in macronutrients, was added to Moses Lake on three occasions in 1977 and once in 1978 during the spring-summer period. The addition resulted in reducing the annual average inflow concentration of phosphorus from about 130-140 micrograms/l to 100 micrograms/l....

  2. Storage, Ageing, Refilling, and Dilution of Photoresists

    E-print Network

    Yoo, S. J. Ben

    as chemical impurities (water, isopropyl, softener from plastics) cause an (accelerated) ageingStorage, Ageing, Refilling, and Dilution of Photoresists Revised: 2010-01-27 Source: www results in a resists being `out of specifica- tions'. High storage temperatures cause accelerated resist

  3. THE MOST DILUTE LAKE IN THE WORLD?

    EPA Science Inventory

    Lake Notasha, near the crest of the Oregon Cascade mountain range, is the most dilute lake known. he measured conductivity during two visits was 1.3 and 1.6 uS cm-1, with a sum of base cations of 9 and 18 ueq L-1; bicarbonate was the dominant anion. ost of the cations in the lake...

  4. Zinc oxide based diluted magnetic semiconductors

    Microsoft Academic Search

    Shivaraman Ramachandran

    2007-01-01

    During my graduate research I have synthesized materials known as diluted magnetic semiconductors (DMS) as epitaxial thin film structures using the process of pulsed laser deposition (PLD). These materials are envisioned to be of importance in the emerging field of spintronics where the charge as well as the spin of the charge carriers can be combined to yield unique functionalities

  5. Applying social learning theory to childhood and adolescent firesetting: can it lead to serial murder?

    PubMed

    Singer, Stephen D; Hensley, Christopher

    2004-08-01

    Despite the fact that serial murder has existed for centuries, it has been given little academic attention in the social science literature. Existing studies have primarily examined the motivational factors involved in the commission of serial murder. However, research examining the childhood and adolescent backgrounds of serial murderers is scant. Based on three case studies of serial murderers, this study contributes to the existing literature by exploring the possible link between childhood and/or adolescent fire setting and adult serial murder by applying social learning theory. PMID:15245657

  6. A simple deep monitoring well dilution technique.

    NASA Astrophysics Data System (ADS)

    Rogiers, Bart; Labat, Serge; Gedeon, Matej; Vandersteen, Katrijn

    2015-04-01

    Well dilution techniques are well known and studied as one of the basic techniques to quantify groundwater fluxes. A typical well dilution test consists of the injection of a tracer, a mixing mechanism (e.g. water circulation with a pump) to achieve a homogeneous concentration distribution within the well, and monitoring of the evolution of tracer concentration with time. An apparent specific discharge can be obtained from such a test, and when details on the well construction are known, it can be converted into a specific discharge representative of the undisturbed aquifer. For deep wells however, the injection of tracer becomes less practical and the use of pumps for circulating and mixing the water becomes problematic. This is due to the limited pressure that common pumps can endure at the outlet, as well as the large volume of water that makes it difficult to achieve a homogeneous concentration, and the impracticalities of getting a lot of equipment to large depths in very small monitoring wells. Injection and monitoring of tracer at a specific depth omits several of the problems with deep wells. We present a very simple device that can be used to perform a dilution test at a specific depth in deep wells. The injection device consists of a PVC tube with a detachable rubber seal at its bottom. To minimize disturbance of the water column in the well, we integrated an EC sensor in this injection device, which enables us to use demineralized water or dissolved salts as a tracer. Once at the target depth, the PVC tube is retracted and the EC sensor and tracer become subject to groundwater flow. The device was tested on a shallow well, on which different types of dilution tests were performed. The results of the other tests agree well with the injection tube results. Finally, the device was used to perform a dilution test in a deep well in order to demonstrate the feasibility of the approach.

  7. Theoretical Positioning Accuracy for Serial and Parallel Kinematic Structure

    NASA Astrophysics Data System (ADS)

    Kurekova, Eva; Halaj, Martin; Omachelová, Milada; Martišovitš, Ilja

    2014-10-01

    Modern production machines employ complex kinematic structures that shall enhance their performance. As those machines are very sophisticated electro-mechanical structures, their design is time consuming and financially demanding. Therefore, designers search for new possibilities how to estimate future properties of the machine as early as in the design phase. The paper gives a brief introduction to the adoption of methodology of measurement uncertainties into the design of production machines. The adapted methodology enables to estimate the theoretical positioning accuracy of the machine end effector that is one of the important indicators of machine performance. Both serial and parallel kinematic structures are considered in the paper. Methodology and sample calculations of theoretical positioning accuracy are presented for serial kinematic structure (represented by advanced plasma cutting head) and parallel kinematic structure, represented by one specific design named Tricept.

  8. Lipidic cubic phase serial millisecond crystallography using synchrotron radiation

    PubMed Central

    Nogly, Przemyslaw; James, Daniel; Wang, Dingjie; White, Thomas A.; Zatsepin, Nadia; Shilova, Anastasya; Nelson, Garrett; Liu, Haiguang; Johansson, Linda; Heymann, Michael; Jaeger, Kathrin; Metz, Markus; Wickstrand, Cecilia; Wu, Wenting; Båth, Petra; Berntsen, Peter; Oberthuer, Dominik; Panneels, Valerie; Cherezov, Vadim; Chapman, Henry; Schertler, Gebhard; Neutze, Richard; Spence, John; Moraes, Isabel; Burghammer, Manfred; Standfuss, Joerg; Weierstall, Uwe

    2015-01-01

    Lipidic cubic phases (LCPs) have emerged as successful matrixes for the crystallization of membrane proteins. Moreover, the viscous LCP also provides a highly effective delivery medium for serial femtosecond crystallography (SFX) at X-ray free-electron lasers (XFELs). Here, the adaptation of this technology to perform serial millisecond crystallography (SMX) at more widely available synchrotron microfocus beamlines is described. Compared with conventional microcrystallography, LCP-SMX eliminates the need for difficult handling of individual crystals and allows for data collection at room temperature. The technology is demonstrated by solving a structure of the light-driven proton-pump bacteriorhodopsin (bR) at a resolution of 2.4?Å. The room-temperature structure of bR is very similar to previous cryogenic structures but shows small yet distinct differences in the retinal ligand and proton-transfer pathway. PMID:25866654

  9. Lipidic cubic phase serial millisecond crystallography using synchrotron radiation.

    PubMed

    Nogly, Przemyslaw; James, Daniel; Wang, Dingjie; White, Thomas A; Zatsepin, Nadia; Shilova, Anastasya; Nelson, Garrett; Liu, Haiguang; Johansson, Linda; Heymann, Michael; Jaeger, Kathrin; Metz, Markus; Wickstrand, Cecilia; Wu, Wenting; Båth, Petra; Berntsen, Peter; Oberthuer, Dominik; Panneels, Valerie; Cherezov, Vadim; Chapman, Henry; Schertler, Gebhard; Neutze, Richard; Spence, John; Moraes, Isabel; Burghammer, Manfred; Standfuss, Joerg; Weierstall, Uwe

    2015-03-01

    Lipidic cubic phases (LCPs) have emerged as successful matrixes for the crystallization of membrane proteins. Moreover, the viscous LCP also provides a highly effective delivery medium for serial femtosecond crystallography (SFX) at X-ray free-electron lasers (XFELs). Here, the adaptation of this technology to perform serial millisecond crystallography (SMX) at more widely available synchrotron microfocus beamlines is described. Compared with conventional microcrystallography, LCP-SMX eliminates the need for difficult handling of individual crystals and allows for data collection at room temperature. The technology is demonstrated by solving a structure of the light-driven proton-pump bacteriorhodopsin (bR) at a resolution of 2.4?Å. The room-temperature structure of bR is very similar to previous cryogenic structures but shows small yet distinct differences in the retinal ligand and proton-transfer pathway. PMID:25866654

  10. SERIALIZATION OF VEHICLE CONTROL AT INTERSECTIONS IN OLDER DRIVERS

    PubMed Central

    Boer, Erwin; Cleij, Diane; Dawson, Jeffrey; Rizzo, Matthew

    2012-01-01

    Summary Negotiating intersections is a complex driving task that is particularly difficult for older drivers. This task requires accurate coordination of multiple driving subtasks, placing high demands on perception, attention and motor control that are known to decline with age. We analyzed intersection negotiation behavior in an instrumented vehicle and found striking differences in how drivers of different ages synchronize speed and heading control when turning right. The older drivers performed most of their steering while standing still instead of while accelerating as younger drivers do. This shift from parallel to serial control is a compensatory solution that drivers employ in response to age related decline in perception, cognition, and motor control abilities. Serialization of turning at an intersection reduces attentional demands largely by eliminating the need to switch attention between different driving sub-tasks. PMID:24273755

  11. Lipidic cubic phase injector facilitates membrane protein serial femtosecond crystallography

    PubMed Central

    Weierstall, Uwe; James, Daniel; Wang, Chong; White, Thomas A.; Wang, Dingjie; Liu, Wei; Spence, John C.H.; Doak, R. Bruce; Nelson, Garrett; Fromme, Petra; Fromme, Raimund; Grotjohann, Ingo; Kupitz, Christopher; Zatsepin, Nadia A.; Liu, Haiguang; Basu, Shibom; Wacker, Daniel; Han, Gye Won; Katritch, Vsevolod; Boutet, Sébastien; Messerschmidt, Marc; Williams, Garth J.; Koglin, Jason E.; Seibert, M. Marvin; Klinker, Markus; Gati, Cornelius; Shoeman, Robert L.; Barty, Anton; Chapman, Henry N.; Kirian, Richard A.; Beyerlein, Kenneth R.; Stevens, Raymond C.; Li, Dianfan; Shah, Syed T.A.; Howe, Nicole; Caffrey, Martin; Cherezov, Vadim

    2014-01-01

    Lipidic cubic phase (LCP) crystallization has proven successful for high-resolution structure determination of challenging membrane proteins. Here we present a technique for extruding gel-like LCP with embedded membrane protein microcrystals, providing a continuously-renewed source of material for serial femtosecond crystallography. Data collected from sub-10 ?m-sized crystals produced with less than 0.5 mg of purified protein yield structural insights regarding cyclopamine binding to the Smoothened receptor. PMID:24525480

  12. Serial 3D Imaging Mass Spectrometry at Its Tipping Point.

    PubMed

    Palmer, Andrew D; Alexandrov, Theodore

    2015-04-21

    Since biology is by and large a 3-dimensional phenomenon, it is hardly surprising that 3D imaging has had a significant impact on many challenges in the life sciences. Imaging mass spectrometry (MS) is a spatially resolved label-free analytical technique that recently maturated into a powerful tool for in situ localization of hundreds of molecular species. Serial 3D imaging MS reconstructs 3D molecular images from serial sections imaged with mass spectrometry. As such, it provides a novel 3D imaging modality inheriting the advantages of imaging MS. Serial 3D imaging MS has been steadily developing over the past decade, and many of the technical challenges have been met. Essential tools and protocols were developed, in particular to improve the reproducibility of sample preparation, speed up data acquisition, and enable computationally intensive analysis of the big data generated. As a result, experimental data is starting to emerge that takes advantage of the extra spatial dimension that 3D imaging MS offers. Most studies still focus on method development rather than on exploring specific biological problems. The future success of 3D imaging MS requires it to find its own niche alongside existing 3D imaging modalities through finding applications that benefit from 3D imaging and at the same time utilize the unique chemical sensitivity of imaging mass spectrometry. This perspective critically reviews the challenges encountered during the development of serial-sectioning 3D imaging MS and discusses the steps needed to tip it from being an academic curiosity into a tool of choice for answering biological and medical questions. PMID:25817912

  13. A Comprehensive Website Meets the Serials Librarian's Back Issue Needs

    Microsoft Academic Search

    Victoria Z. Nann

    1998-01-01

    The author describes USBE's Website, which meets virtually every back issue need of the serials librarian. An online catalog of over 17,000 scholarly journal title holdings, order page, membership application, and a fee-free out-of-print book search service are some of the features of the USBE site. The USBE Web pages also include instructions on how to donate surplus periodicals to

  14. Two Serial Data to Pulse Code Modulation System Interfaces

    NASA Technical Reports Server (NTRS)

    Hamory, Phil

    2006-01-01

    Two pulse code modulation (PCM) system interfaces for asynchronous serial data are described. One interface is for global positioning system (GPS) data on the NASA Dryden Flight Research Center (DFRC) F-15B (McDonnell Douglas Corporation, St. Louis, Missouri) airplane, tail number 836 (F-15B/836). The other is for flight control computer data on the duPont Aerospace (La Jolla, California) DP-1, a 53-percent scale model of the duPont Aerospace DP-2.

  15. Ecological Effects of Serial Impoundment on the Cotter River, Australia

    Microsoft Academic Search

    Susan Nichols; Richard Norris; William Maher; Martin Thoms

    2006-01-01

    This study examines the ecological effects of serial impoundments (three dams) on a rocky upland stream in southeastern Australia.\\u000a Physical, chemical and biological changes were quantified and interpreted within a three-level hierarchy of effects model\\u000a developed previously by Petts [1984, Impounded Rivers. John Wiley and Sons, New York] and the Australian Rivers Assessment\\u000a System (AUSRIVAS) to predict pre-dam biota. First-order

  16. Geometrical Interpretation of the CCT Stiffness Mapping for Serial Manipulators

    Microsoft Academic Search

    Chintien Huang; Imin Kao

    2001-01-01

    Recent research results suggested a conservative transformation to correct the well-known congruence transformation between\\u000a Cartesian and joint stiffness matrices of a serial manipulator. This paper utilizes screw geometry to interpret the conservative\\u000a congruence transformation (CCT). The analysis using screw theory provides better geometric insights into the CCT. The effective\\u000a geometrical stiffness matrix, due to the change of manipulator geometry under

  17. Serial culturing of human bronchial epithelial cells derived from biopsies

    Microsoft Academic Search

    Petra M. de Jong; Marianne A. J. A. van Sterkenburg; Johanna A. Kempenaar; Joop H. Dijkman; Maria Ponec

    1993-01-01

    Summary  In the present study we describe the establishment of serial cultures of human bronchial epithelial cells derived from biopsies\\u000a obtained by fiberoptic bronchoscopy. The cell cultures were initiated from small amounts of material (2 mm forceps biopsies)\\u000a using either explants or epithelial cell suspensions in combination with a feeder-layer technique. The rate of cell proliferation\\u000a and the number of passages

  18. A nonparametric trend test for seasonal data with serial dependence.

    USGS Publications Warehouse

    Hirsch, R.M.; Slack, J.R.

    1984-01-01

    Statistical tests for monotonic trend in seasonal (eg monthly) hydrologic time series are commonly confounded by some of the following problems: nonnormal data, missing values, seasonality, censoring and serial dependence. An extension of the Mann-Kendall test for trend (designed for such data) is presented here. Because the test is based entirely on tanks, it is robust against nonnormality and censoring.-from Authors

  19. Serial plasmapheresis in a haemophiliac with antibodies to FVIII

    Microsoft Academic Search

    R Cobcroft; G Tamagnini; K M Dormandy

    1977-01-01

    Serial plasmaphereses were performed on a 23-year-old haemophiliac, with antibodies to factor VIII (FVIII), in order to reduce the antibody level before multiple dental extractions. Eight phereses were carried out in which approximately 1.5 litres plasma was exchanged with isotonic saline. By the ninth exchange, which was carried out immediately before the extraction, the antibody level had fallen from 4

  20. DT-bottlenecks in serial production lines: theory and application

    Microsoft Academic Search

    Shu-Yin Chiang; Chih-Tsung Kuo; Semyon M. Meerkov

    2000-01-01

    The bottleneck (BN) of a production line is a machine that impedes the system's performance in the strongest manner. It has been shown in the previous work that the so-called down- time bottlenecks (DT-BNs) are of main industrial importance. In this paper, a method for DT-BN identification is developed in the framework of serial production lines with unreliable (Markovian) machines

  1. Qualifying Serial Interface Jitter Rapidly and Cost-effectively

    Microsoft Academic Search

    Yongquan Fan; Zeljko Zilic

    2010-01-01

    High-Speed Serial Interface (HSSI) devices have witnessed an increased use in communications. As a measure of how often bit\\u000a errors happen in a communication interface, Bit Error Rate (BER) performance is of paramount importance. The bit errors in\\u000a HSSIs are in large part due to jitter. This paper investigates the topic of accelerating the jitter and BER testing. We first

  2. Serial correlation and seasonality in the real estate market

    Microsoft Academic Search

    Chiong-Long Kuo; N. Fort

    1996-01-01

    In this article, a two-step, two-sample method and a Bayesian method are proposed to estimate the serial correlation and the seasonally of the price behavior of the residential housing market. The Bayesian method is found to be superior to the alternative two-step methods. The empirical results based on the Bayesian approach support the rejection of the random-walk hypothesis in the

  3. Axon Tracking in Serial Block-Face Scanning Electron Microscopy

    Microsoft Academic Search

    Elizabeth Jurrus; Tolga Tasdizen; Pavel Koshevoy; P. Thomas Fletcher; Melissa Hardy; Chi-Bin Chien; Winfried Denk; Ross Whitaker

    2006-01-01

    Electron microscopy is an important modality for the analysis of neuronal structures in neurobiology. We address the problem of tracking axons across large distances in volumes acquired by Serial Block-Face Scanning Electron Microscopy (SBFSEM). This is a challenging problem due to the small cross- sectional size of axons and the low signal-to-noise ratio in SBF- SEM images. A carefully engineered

  4. Sticky Plans: Inhibition and Binding during Serial Task Control

    PubMed Central

    Mayr, Ulrich

    2009-01-01

    Recent evidence suggests substantial response-time costs associated with lag-2 repetitions of tasks within explicitly controlled task sequences (Koch, Philipp, & Gade, 2006, Schneider, 2007), a result that has been interpreted as inhibition of no-longer relevant tasks. Experiments 1–3 confirm much larger lag-2 costs under serial-control than under externally cued conditions, but also show (a) that these costs occur only when sequences contain at least two distinct chunks and (b) that direct lag-2 repetitions are not a necessary condition for their occurrence. This pattern suggests the hypothesis that rather than task-set inhibition, the large lag-2 costs observed in complex sequences, reflect interference resulting from links between positions within a sequential plan and the individual tasks controlled by this plan. The remaining experiments successfully test this hypothesis (Exp. 4), rule out chaining accounts as a potential alternative explanation (Exp. 5), and demonstrate that interference results from information stored in long-term memory rather than working memory (Exp. 6). Implications of these results for an integration of models of serial-order control and serial memory are discussed. PMID:19427636

  5. On the serial connection of the regular asynchronous systems

    E-print Network

    Serban E. Vlad

    2012-06-20

    The asynchronous systems f are multi-valued functions, representing the non-deterministic models of the asynchronous circuits from the digital electrical engineering. In real time, they map an 'admissible input' function u:R\\rightarrow{0,1}^{m} to a set f(u) of 'possible states' x\\inf(u), where x:R\\rightarrow{0,1}^{m}. When f is defined by making use of a 'generator function' {\\Phi}:{0,1}^{n}\\times{0,1}^{m}\\rightarrow{0,1}^{n}, the system is called regular. The usual definition of the serial connection of systems as composition of multi-valued functions does not bring the regular systems into regular systems, thus the first issue in this study is to modify in an acceptable manner the definition of the serial connection in a way that matches regularity. This intention was expressed for the first time, without proving the regularity of the serial connection of systems, in a previous work. Our present purpose is to restate with certain corrections and prove that result.

  6. 33 CFR 154.824 - Inerting, enriching, and diluting systems.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...false Inerting, enriching, and diluting systems. 154.824 Section 154.824 Navigation...HAZARDOUS MATERIAL IN BULK Vapor Control Systems § 154.824 Inerting, enriching, and diluting systems. (a) A vapor control system...

  7. 33 CFR 154.2107 - Inerting, enriching, and diluting systems.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Inerting, enriching, and diluting systems. 154.2107 Section 154.2107 ...MATERIAL IN BULK Marine Vapor Control Systems Transfer Facilities-Vcs Design and... Inerting, enriching, and diluting systems. This section applies only to...

  8. 33 CFR 154.824 - Inerting, enriching, and diluting systems.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...false Inerting, enriching, and diluting systems. 154.824 Section 154.824 Navigation...HAZARDOUS MATERIAL IN BULK Vapor Control Systems § 154.824 Inerting, enriching, and diluting systems. (a) A vapor control system...

  9. 33 CFR 154.824 - Inerting, enriching, and diluting systems.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...false Inerting, enriching, and diluting systems. 154.824 Section 154.824 Navigation...HAZARDOUS MATERIAL IN BULK Vapor Control Systems § 154.824 Inerting, enriching, and diluting systems. (a) A vapor control system...

  10. 40 CFR 89.424 - Dilute emission sampling calculations.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...CONTINUED) AIR PROGRAMS... , PM, or NOX ) in g...Hydrocarbon concentration of the...the dilution air as measured... =Relative humidity of the dilution air, percent...Carbon monoxide concentration of the...

  11. Two Emerging Serial Storage Interfaces for Supporting Digital Libraries: Serial Storage Architecture (SSA) and Fiber Channel-Arbitrated Loop (FC-AL)

    Microsoft Academic Search

    David H. C. Du; Tai-Sheng Chang; Jenwei Hsieh; Sangyup Shim; Yuewei Wang

    2000-01-01

    Digital libraries require not only high storage space capacity but also high performance storage systems which provide the fast accesses to the data. These requirements can not be efficiently supported with the traditional SCSI interfaces. Several serial storage interfaces have been proposed for constructing storage systems with high transfer bandwidth, large storage capacity, and fault tolerance feature. Among them, Serial

  12. Dilution jet mixing program, supplementary report

    NASA Technical Reports Server (NTRS)

    Srinivasan, R.; White, C.

    1986-01-01

    The velocity and temperature distributions predicted by a 3-D numerical model and experimental measurements are compared. Empirical correlations for the jet velocity trajectory developed are presented. The measured velocity distributions for all test cases of phase through phase 3 are presented in the form of contour and oblique plots. quantification of the effects of the following on the jet mixing characteristics with a confined crossflow are: (1) orifice geometry momentum flux ratio and density ratio; (2) nonuniform mainstream temperature and velocity profiles upstream of dilution orifices; (3) cold versus hot jet injection; (4) cross-stream flow are a convergence as encountered in practical dilution zone geometries; (5) 2-D slot versus circular orifices; (6) discrete noncirculcer orifices; (7) single-sided versus opposed jets; (8) single row of jets.

  13. The Physics and Technology of Dilute Nitrides

    Microsoft Academic Search

    N Balkan

    2004-01-01

    Dilute nitrides have emerged from conventional III–V semiconductors such as GaAs or InP by the insertion of nitrogen into the group V sub-lattice, which has a profound influence on the electronic properties of these materials and allows widely extended band structure engineering. This is expected to lead to novel devices, e.g. for optical data transmission, solar cells, biophotonics or gas

  14. Determination of copper by isotopic dilution.

    PubMed

    Faquim, E S; Munita, C S

    1994-01-01

    A rapid and selective method was used for the determination of copper by isotopic dilution employing substoichiometric extraction with dithizone in carbon tetrachloride. The appropriate pH range for the substoichiometric extraction was 2-7. In the analysis, even a large excess of elements forming extractable complexes with dithizone does not interfere. The accuracy and precision of the method were evaluated. The method has been applied to analysis of reference materials, wheat flour, wine, and beer. PMID:7710886

  15. Interaction of clays with dilute fluoride solutions

    Microsoft Academic Search

    J. Slavek; H. Farrah; W. F. Pickering

    1984-01-01

    Interaction between dilute (mg L-1) NaF solutions and clay suspensions (0.08 % w\\/v) has been examined as a function of pH (range 3 to 8), clay type (Na+- or Ca2+-kaolinite, illite, montmorillonite) and NaF concentration. No F loss from solution was detected at pH > 6.5, while enhanced uptake was found on decreasing the pH, especially in the 4 to

  16. Anaerobic toxic wastes treatment: dilution effects

    Microsoft Academic Search

    G. F. Nakhla; M. T. Suidan

    1995-01-01

    The impact of waste strength on the treatability of toxic wastes such as coal gasification wastewater by the anaerobic GAC reactor operating with periodic GAC replacement was assessed by operating three units treating 30%, 60% and full strength wastewater. At a COD loading of 4.7 kg\\/m3 d performance was unimpacted by dilution at all the GAC replacement rates investigated in

  17. Zinc oxide-based diluted magnetic semiconductors

    Microsoft Academic Search

    Ram Seshadri

    2005-01-01

    The current experimental situation on the occurrence or absence of ferromagnetism in diluted magnetic semiconductors based on wurtzite zinc oxide hosts is presented, focusing mainly on the many recent experiments which have been performed on bulk systems. Numerous reports have suggested that partial (typically less than 10at.%) substitution of Zn2+ in ZnO by magnetic transition metal (tM) ions, particularly Mn2+

  18. Dilution of respiratory solutes in exhaled condensates.

    PubMed

    Effros, Richard M; Hoagland, Kelly W; Bosbous, Mark; Castillo, Daniel; Foss, Bradley; Dunning, Marshall; Gare, Meir; Lin, Wen; Sun, Feng

    2002-03-01

    Most exhaled water is produced as gaseous water vapor, which can be collected in cooled condensers. The presence of nonvolatile solutes in these condensates suggests that droplets of respiratory fluid (RF) have also been collected. However, calculation of RF solute concentrations from condensates requires estimation of the dilution of RF droplets by water vapor. We used condensate electrolyte concentrations to calculate the dilution of RF droplets in condensates from 20 normal subjects. The total ionic concentration (conductivity) was 497 plus minus 68 (mean plus minus SEM) muM. Of this, 229 plus minus 43 muM was NH(4)(+), but little NH(4)(+) was collected from subjects with tracheostomies, indicating oral formation. The Na+ concentration in condensate ([Na+](cond)) averaged 242 plus minus 43 muM. Large variations in [Na(+)](cond) correlated well with variations of K+ in condensate ([K+](cond)) and Cl-) in condensate ([Cl-](cond)), and were attributed to differences in respiratory droplet dilution. Dividing condensate values of ([Na+] + [K+] ) by those of plasma indicated that RF represented between 0.01% and 2.00% of condensate volumes. Calculated values for Na+, K+, Cl-, lactate, and protein in RF were [Na+](RF) = 91 +/- 8 mM, [K+](RF) = 60 +/- 11 mM, [Cl-](RF) = 102 +/- 17 mM, [lactate](RF) = 44 +/- 17 mM, and [protein](RF) = 7.63 +/- 1.82 g/dl, respectively. PMID:11874811

  19. Dilution physics modeling: Dissolution/precipitation chemistry

    SciTech Connect

    Onishi, Y.; Reid, H.C.; Trent, D.S.

    1995-09-01

    This report documents progress made to date on integrating dilution/precipitation chemistry and new physical models into the TEMPEST thermal-hydraulics computer code. Implementation of dissolution/precipitation chemistry models is necessary for predicting nonhomogeneous, time-dependent, physical/chemical behavior of tank wastes with and without a variety of possible engineered remediation and mitigation activities. Such behavior includes chemical reactions, gas retention, solids resuspension, solids dissolution and generation, solids settling/rising, and convective motion of physical and chemical species. Thus this model development is important from the standpoint of predicting the consequences of various engineered activities, such as mitigation by dilution, retrieval, or pretreatment, that can affect safe operations. The integration of a dissolution/precipitation chemistry module allows the various phase species concentrations to enter into the physical calculations that affect the TEMPEST hydrodynamic flow calculations. The yield strength model of non-Newtonian sludge correlates yield to a power function of solids concentration. Likewise, shear stress is concentration-dependent, and the dissolution/precipitation chemistry calculations develop the species concentration evolution that produces fluid flow resistance changes. Dilution of waste with pure water, molar concentrations of sodium hydroxide, and other chemical streams can be analyzed for the reactive species changes and hydrodynamic flow characteristics.

  20. The ADMX Site and Dilution Refrigerator

    NASA Astrophysics Data System (ADS)

    Sloan, James; ADMX Collaboration

    2015-04-01

    The ADMX experiment searches for axions by looking for their resonant conversion to detectable photons with a frequency that directly corresponds to the axion mass (a currently unknown value). Fundamentally, the RF photon detection is relatively straightforward; the exceptional technical challenge of ADMX is achieving the sensitivity required to discern the extremely weak (~ 10-22 W) photon signal above the system noise. Greater sensitivity is achieved by either lowering the physical and amplifier noise or by integrating for longer time over a given frequency range. Noise temperatures approaching the quantum limit are achieved by operating quantum electronics, SQUIDs and JPAs, at very low physical temperatures. In the past ADMX has achieved ~1.5K physical temperatures by operating with pumped 4 He. The addition of a 3 He/4 He dilution refrigerator into ADMX will lower the physical temperatures to ~100mK, dramatically increasing the scan rate and sensitivity. I will discuss the site and hardware modifications to ADMX to accommodate the dilution refrigerator and will report on the commissioning operations of the dilution refrigerator. Supported by DOE Grants DE-FG02-97ER41029, DE-FG02-96ER40956, DE- AC52-07NA27344, DE-AC03-76SF00098, NSF Grant 1067242, and the Livermore LDRD program.

  1. Solubility of solutes in compressed gases: Dilute solution theory

    SciTech Connect

    Wang, X.; Tavlarides, L.L. (Syracuse Univ., NY (United States). Dept. of Chemical Engineering)

    1994-03-01

    A dilute solution theory is developed for describing the thermodynamic behavior of a compressed gaseous dilute solution. The considerations follow generally accepted statistical treatments for describing dilute liquid solutions. The theory is self-consistent with the ideal gas law for dilute gases and with Henry's law for dilute liquid (or solid) solutions. Further, it provides a simple linear relationship which represents well the solubility behavior of a heavy solute (solid or liquid) in a gaseous solvent over relatively wide density regions of the solvent (i.e., 0 [le] [rho] [le] 2.0/V[sub c]).

  2. Serial rapists and their victims: reenactment and repetition.

    PubMed

    Burgess, A W; Hazelwood, R R; Rokous, F E; Hartman, C R; Burgess, A G

    1988-01-01

    The major finding in this study of 41 serial rapists is the large numbers of reported and unreported victims. For over 1200 attempted and completed rapes, there were 200 convictions. The hidden rapes or earliest nonreported victims of these men as boys and adolescents were identified from their families, their neighborhood, and their schools. Examining the possible link between childhood sexual abuse and criminal behavior in this sample of 41 serial rapists, 56.1% were judged to have at least one forced or exploitive abuse experience in boyhood, as compared to a study of 2,972 college males reporting 7.3% experiencing boyhood sexual abuse. Looking within the abused samples, 56.1% of the rapists reported forced sex, compared to the college sample's 30.4%. Also, the rapist sample revealed higher rates of family member as abuser (48.4%), compared to 22.2% for the college sample. Retrospective reconstruction of the sexual activities and assertive behaviors of these men as boys reveals that 51% of the boys reenact the abuse as a preadolescent with their earliest victims being known to them (48% as neighborhood girls), family (25% as sisters), or girlfriend (25%). The onset of rape fantasies in midadolescence (mean age 16.9) crystalizes the earlier sexually initiated behaviors into juvenile behaviors of spying, fetish burglaries, molestations, and rapes. Repetition of these juvenile behaviors set their criminal patters on strangers--their next group of victims. To reduce victimization, serial rapists need to be identified early and stopped. This means acknowledging and reporting boy sexual abuse. This includes being sensitive to the reenactment behaviors noted in the initiated activities of abused children, which in turn need to be differentiated from peer play. Closer attention needs to be paid to families with incest behavior to insure that younger children are protected. Adolescents showing early repetitive juvenile delinquent behaviors must be assessed for physical and sexual abuse, and intervention must be planned to deal with the victimization. In the investigation and apprehension of serial rapists, law enforcement might pay closer attention to fetish burglaries and the spying, secretive behaviors that serve as the prototype for rape behavior. PMID:3421601

  3. High-Resolution Protein Structure Determination by Serial Femtosecond Crystallography

    PubMed Central

    Boutet, Sébastien; Lomb, Lukas; Williams, Garth J.; Barends, Thomas R. M.; Aquila, Andrew; Doak, R. Bruce; Weierstall, Uwe; DePonte, Daniel P.; Steinbrener, Jan; Shoeman, Robert L.; Messerschmidt, Marc; Barty, Anton; White, Thomas A.; Kassemeyer, Stephan; Kirian, Richard A.; Seibert, M. Marvin; Montanez, Paul A.; Kenney, Chris; Herbst, Ryan; Hart, Philip; Pines, Jack; Haller, Gunther; Gruner, Sol M.; Philipp, Hugh T.; Tate, Mark W.; Hromalik, Marianne; Koerner, Lucas J.; van Bakel, Niels; Morse, John; Ghonsalves, Wilfred; Arnlund, David; Bogan, Michael J.; Caleman, Carl; Fromme, Raimund; Hampton, Christina Y.; Hunter, Mark S.; Johansson, Linda C.; Katona, Gergely; Kupitz, Christopher; Liang, Mengning; Martin, Andrew V.; Nass, Karol; Redecke, Lars; Stellato, Francesco; Timneanu, Nicusor; Wang, Dingjie; Zatsepin, Nadia A.; Schafer, Donald; Defever, James; Neutze, Richard; Fromme, Petra; Spence, John C. H.; Chapman, Henry N.; Schlichting, Ilme

    2013-01-01

    Structure determination of proteins and other macromolecules has historically required the growth of high-quality crystals sufficiently large to diffract x-rays efficiently while withstanding radiation damage. We applied serial femtosecond crystallography (SFX) using an x-ray free-electron laser (XFEL) to obtain high-resolution structural information from microcrystals (less than 1 micrometer by 1 micrometer by 3 micrometers) of the well-characterized model protein lysozyme. The agreement with synchrotron data demonstrates the immediate relevance of SFX for analyzing the structure of the large group of difficult-to-crystallize molecules. PMID:22653729

  4. High-resolution protein structure determination by serial femtosecond crystallography.

    PubMed

    Boutet, Sébastien; Lomb, Lukas; Williams, Garth J; Barends, Thomas R M; Aquila, Andrew; Doak, R Bruce; Weierstall, Uwe; DePonte, Daniel P; Steinbrener, Jan; Shoeman, Robert L; Messerschmidt, Marc; Barty, Anton; White, Thomas A; Kassemeyer, Stephan; Kirian, Richard A; Seibert, M Marvin; Montanez, Paul A; Kenney, Chris; Herbst, Ryan; Hart, Philip; Pines, Jack; Haller, Gunther; Gruner, Sol M; Philipp, Hugh T; Tate, Mark W; Hromalik, Marianne; Koerner, Lucas J; van Bakel, Niels; Morse, John; Ghonsalves, Wilfred; Arnlund, David; Bogan, Michael J; Caleman, Carl; Fromme, Raimund; Hampton, Christina Y; Hunter, Mark S; Johansson, Linda C; Katona, Gergely; Kupitz, Christopher; Liang, Mengning; Martin, Andrew V; Nass, Karol; Redecke, Lars; Stellato, Francesco; Timneanu, Nicusor; Wang, Dingjie; Zatsepin, Nadia A; Schafer, Donald; Defever, James; Neutze, Richard; Fromme, Petra; Spence, John C H; Chapman, Henry N; Schlichting, Ilme

    2012-07-20

    Structure determination of proteins and other macromolecules has historically required the growth of high-quality crystals sufficiently large to diffract x-rays efficiently while withstanding radiation damage. We applied serial femtosecond crystallography (SFX) using an x-ray free-electron laser (XFEL) to obtain high-resolution structural information from microcrystals (less than 1 micrometer by 1 micrometer by 3 micrometers) of the well-characterized model protein lysozyme. The agreement with synchrotron data demonstrates the immediate relevance of SFX for analyzing the structure of the large group of difficult-to-crystallize molecules. PMID:22653729

  5. A sociological analysis of serial murder: victim and offender characteristics 

    E-print Network

    Dunlap, Donna Jean

    1990-01-01

    . The Federal Bureau of Investigation (FBI) has defined murder as ". . . the willful (nonnegligent) killing of one human being by another" (1981 ? 1987). They state that the typical murderer (who has been arrested) is a white male under the age of 25 (1981... descriptive. In fact, a large portion of the literature has not come from the academic field, but from research conducted utilizing data collected by the FBI. It is the purpose of the present study, therefore, to develop a sociological analysis of serial...

  6. Hi-speed versatile serial crate controller for CAMAC

    SciTech Connect

    Horelick, D.

    1984-10-01

    A serial crate controller, primarily for use in the SLC CAMAC control system, has been designed, and has been in use for about 2 years. The design supports a party line approach, with up to 16 crates on a single twisted pair for data transfers, plus another pair for prompt L response. The bit rate is 5 megabits/s, and complete transaction times of about 10 ..mu..s are achieved for 16-bit data transfers over cables up to 1000 feet long. One of the primary objects of the design was simplicity - there are approximately 60 chips in the two-board unit.

  7. Error detection techniques in bit-serial multiplication

    E-print Network

    Brosnan, Thomas Joseph

    1983-01-01

    equally weighted inputs and produces as output the n-bit binary number corresponding to their sum) and two storage cells, one for the sum output and one for the carry output. This algorithm is the hardware implementation of the familiar shift and add... technique for multiplication . At each step the latest bit of the serial operand is ANDed with the multiplicand and added to the previous partial product:. The partial products are stored i n carry-save form. The enti re process takes n+k cycles to b n...

  8. A bit-serial floating point multiply/add architecture for signal processing applications

    E-print Network

    Williams, Bertrand Jeffery

    1983-01-01

    Add . . . . . . . . . . 5 I I I . DESIGN CONSIDERATIONS . . . . . ~, ~ ~ ~ ~ ~ 8 State of the Art e . 8 The Floating Point Format. . . . ~ . ~ ~ . 14 The Bit-Serial Architectures . . . . . . . 19 Pipelined Architecture for a Serial Data Path... Point Muit'Iplier Block Diagram 12 3. General Sequentiaf Multiplier Block Diagram . 13 4. Bit-Serfal Multiplier Block Diagram 15 5. IEEE 32-bit Floating Point Format. . . . . . 17 6. Reduced Floating Point Format 18 7. The Bit-Serial Architecture...

  9. Performance and Comparison of Custom Serial Powering Regulators and Architectures for SLHC Silicon Trackers

    E-print Network

    Tic, Thomas; Weber, M

    2009-01-01

    Serial powering is an elegant solution to power the SLHC inner trackers with a minimum volume of cables. Previously R&D on the serial powering of silicon strip detector modules had been based on discrete commercial electronics, but with the delivery of the Atlas Binary Chip Next chip in 0.25 micron CMOS technology (ABCN-25) and the Serial Powering Interface chip (SPi), custom elements of shunt regulators and transistors became available. These ASICs can be used to implement three complementary serial powering architectures. The features of these schemes and their performance with 10 and 20 chip ABCN-25 hybrids will be presented.

  10. The linear stability of dilute particulate rings

    E-print Network

    Henrik N. Latter; Gordon I. Ogilvie

    2006-09-06

    Irregular structure in planetary rings is often attributed to the intrinsic instabilities of a homogeneous state undergoing Keplerian shear. Previously these have been analysed with simple hydrodynamic models. We instead employ a kinetic theory, in which we solve the linearised moment equations derived in Shu and Stewart 1985 for a dilute ring. This facilitates an examination of velocity anisotropy and non-Newtonian stress, and their effects on the viscous and viscous/gravitational instabilities thought to occur in Saturn's rings. Because we adopt a dilute gas model, the applicability of our results to the actual dense rings of Saturn are significantly curtailled. Nevertheless this study is a necessary preliminary before an attack on the difficult problem of dense ring dynamics. We find the Shu and Stewart formalism admits analytic stability criteria for the viscous overstability, viscous instability, and thermal instability. These criteria are compared with those of a hydrodynamic model incorporating the effective viscosity and cooling function computed from the kinetic steady state. We find the two agree in the `hydrodynamic limit' (i.e. many collisions per orbit) but disagree when collisions are less frequent, when we expect the viscous stress to be increasingly non-Newtonian and the velocity distribution increasingly anisotropic. In particular, hydrodynamics predicts viscous overstability for a larger portion of parameter space. We also numerically solve the linearised equations of the more accurate Goldreich and Tremaine 1978 kinetic model and discover its linear stability to be qualitatively the same as that of Shu and Stewart's. Thus the simple collision operator adopted in the latter would appear to be an adequate approximation for dilute rings, at least in the linear regime.

  11. Serial manipulator functional calibration for in vitro biomechanical testing.

    PubMed

    Hill, Ira; Banks, Scott

    2014-01-01

    Serial manipulators are often used in biomechanical testing of human joints because they are precise, repeatable instruments that can create interesting loading scenarios. Unfortunately, commercial serial manipulators often do not have acceptable global positional accuracy due to manufacturing tolerances, assembly errors, and other mechanical imperfections. Numerous calibration methods have been reported which calibrate geometric and non-geometric parameters to reduce static position errors under constant loading conditions. However, the manipulator's global accuracy during continuous motion with time-varying external loading conditions is often not addressed but is necessary for joint biomechanical testing. Using the Mitsubishi PA10-6CE as a case study, a novel functional calibration procedure was developed that performs both static and dynamic calibration. The calibration uses optimization techniques to populate a 34-parameter model that accounts for the robot's geometric and non-geometric parameters and significantly reduces the mean/peak static and dynamic position errors to 0.368/0.67 mm and 0.353/0.81 mm, respectively, while externally loaded. PMID:24262850

  12. Serial progression of cortical and medullary thymic epithelial microenvironments.

    PubMed

    Alves, Nuno L; Takahama, Yousuke; Ohigashi, Izumi; Ribeiro, Ana R; Baik, Song; Anderson, Graham; Jenkinson, William E

    2014-01-01

    Thymic epithelial cells (TECs) provide key instructive signals for T-cell differentiation. Thymic cortical (cTECs) and medullary (mTECs) epithelial cells constitute two functionally distinct microenvironments for T-cell development, which derive from a common bipotent TEC progenitor. While seminal studies have partially elucidated events downstream of bipotent TECs in relation to the emergence of mTECs and their progenitors, the control and timing of the emergence of the cTEC lineage, particularly in relation to that of mTEC progenitors, has remained elusive. In this review, we describe distinct models that explain cTEC/mTEC lineage divergence from common bipotent progenitors. In particular, we summarize recent studies in mice providing evidence that mTECs, including the auto-immune regulator(+) subset, derive from progenitors initially endowed with phenotypic properties typically associated with the cTEC lineage. These observations support a novel "serial progression" model of TEC development, in which progenitors serially acquire cTEC lineage markers, prior to their commitment to the mTEC differentiation pathway. Gaining a better understanding of the phenotypic properties of early stages in TEC progenitor development should help in determining the mechanisms regulating cTEC/mTEC lineage development, and in strategies aimed at thymus reconstitution involving TEC therapy. PMID:24214487

  13. Serial reaction modeling using random walk particles tracking methods

    NASA Astrophysics Data System (ADS)

    Henri, C.; Fernández-Garcia, D.

    2012-04-01

    Since the middle of the previous century, DNAPL contamination is a clear identified problem for the management of urban and suburban groundwater resources quality. Random walk particles tracking methods showed their legitimacy and efficiency for modeling reactive transport especially thanks to the absence of numerical dispersion and computational efficiency. We present a new method to efficiently simulate a serial reaction, i.e., the natural degradation of chlorinated solvents, into a trustable 3D random walk particle-tracking model (RW3D). The chemical specie is defined as a particle property (state of the particle). Results of the zeroth spatial moment of the mass transfer equation derivation in the Fourier domain are used as particle state transition probabilities. We obtain thereby the state of a particle after a given time i.e. the mass evolution of the different species involved into the serial reaction. The particle tracking approach is successfully compared to the well- known finite difference code RT3D. We apply this approach to model the behavior of chlorinated compounds resulting from the sequential degradation of tetrachloroethylene (PCE) in highly randomly heterogeneous porous media.

  14. North American perception of the prestige of biomechanics serials.

    PubMed

    Knudson, Duane V; Chow, John W

    2008-05-01

    Biomechanics is a discipline with many applications and sub-areas so scholars often publish their work in journals in different subject categories used in the ISI Journal Citation Reports (JCR). It is not known whether the quality/prestige of journals in the discipline of biomechanics matches the ISI Impact Factor (IF) ratings reported in JCR. A survey of the membership of the American Society of Biomechanics (ASB) was conducted to rate the quality/prestige of typical papers in serials publishing biomechanics research on a five point scale. Seventy-eight of 610 ASB members responded to the survey. Mean journal prestige ratings were only weakly correlated (r=0.35) with the IF for 2005, with serial ratings differing across the interest areas of the ASB respondents. It was concluded that IF's should be used with caution in evaluating the prestige of journals publishing biomechanics research. Furthermore, investigators should consider interest area specific ratings within biomechanics when selecting journals for publishing their research. PMID:17707642

  15. Serial sectioning techniques for a modified LKB Historesin.

    PubMed

    Yeung, E C; Law, S K

    1987-05-01

    A glycol methacrylate-based plastic that is capable of producing serial sections has been introduced by LKB. This plastic, provided in the LKB 2218-500 Historesin Embedding Kit, has been tested in our laboratory for its ribbon forming capacity. Various block sizes, concentrations of the softening agent polyethylene glycol 400 (PEG), and tissue types have been examined to determine the optimal conditions for ribbon formation. Although unmodified LKB Historesin is capable of forming ribbons, these ribbons often break. The addition of PEG to the embedding solution enhances ribbon formation. When sectioning with glass knives the best results are achieved with the addition of 0.2 ml of PEG/5.0 ml of embedding medium. A conventional AO rotary microtome can be used to produce ribbons if, in addition to the added PEG (optimal concentration 0.25-0.30 per 5 ml of embedding medium) a thin layer of dental wax is added to the upper and lower surfaces of the block. Ribbons form more easily on microtomes, such as the LKB Historange, that have a retractable specimen arm. If serial sections are to be produced it is very important that the upper and lower faces of blocks be parallel. PMID:3617113

  16. Fast word reading in pure alexia: "fast, yet serial".

    PubMed

    Bormann, Tobias; Wolfer, Sascha; Hachmann, Wibke; Neubauer, Claudia; Konieczny, Lars

    2015-01-01

    Pure alexia is a severe impairment of word reading in which individuals process letters serially with a pronounced length effect. Yet, there is considerable variation in the performance of alexic readers with generally very slow, but also occasionally fast responses, an observation addressed rarely in previous reports. It has been suggested that "fast" responses in pure alexia reflect residual parallel letter processing or that they may even be subserved by an independent reading system. Four experiments assessed fast and slow reading in a participant (DN) with pure alexia. Two behavioral experiments investigated frequency, neighborhood, and length effects in forced fast reading. Two further experiments measured eye movements when DN was forced to read quickly, or could respond faster because words were easier to process. Taken together, there was little support for the proposal that "qualitatively different" mechanisms or reading strategies underlie both types of responses in DN. Instead, fast responses are argued to be generated by the same serial-reading strategy. PMID:24592898

  17. The universal serial bus endoscope: design and initial clinical experience.

    PubMed

    Hernandez-Zendejas, Gregorio; Dobke, Marek K; Guerrerosantos, Jose

    2004-01-01

    Endoscopic forehead lift is a well-established procedure in aesthetic plastic surgery. Many agree that currently available video-endoscopic equipment is bulky, multipieced and sometimes cumbersome in the operating theater. A novel system, the Universal Serial Bus Endoscope (USBE) was designed to simplify and reduce the number of necessary equipment pieces in the endoscopic setup. The USBE is attached by a single cable to a Universal Serial Bus (USB) port of a laptop computer. A built-in miniaturized cold light source provides illumination. A built-in digital camera chip enables procedure recording. The real-time images and movies obtained with USBE are displayed on the computer's screen and recorded on the laptop's hard disk drive. In this study, 25 patients underwent endoscopic browlift using the USBE system to test its clinical usefulness, all with good results and without complications or need for revision. The USBE was found to be reliable and easier to use than current video-endoscope equipment. The operative time needed to complete the procedure by the authors was reduced approximately 50%. The design and main technical characteristics of the USBE are presented. PMID:15383889

  18. Serial lobar lung lavage in pulmonary alveolar proteinosis.

    PubMed

    Baldi, Milind M; Nair, Jairaj; Athavale, Amita; Gavali, Varun; Sarkar, Manjula; Divate, Smita; Shah, Unmil

    2013-10-01

    Pulmonary alveolar proteinosis (PAP) is a rare disease with worldwide distribution and an estimated incidence of 0.36 cases per million. We report a case of a PAP coexisting with Pneumocystis jiroveci pneumonia and Mycobacterium tuberculosis infection. The patient was treated with serial lobar lung lavages, GM-CSF, cotrimoxazole, and antituberculosis drugs. His PaO2 on room air improved from 45.7 to 63.8 torr and pulmonary functions normalized (FVC 81.2%, FEV1 95.3%, FEV1/FVC 91.8). A high-resolution computed tomography scan of the thorax showed clearing of both lower lobes. Whole-lung lavage is used in the treatment of PAP, but it may worsen the hypoxemia and lead to hemodynamic instability during the procedure. To the best of our knowledge, there are no reports of bronchoscopic serial lobar lung lavages in cases of PAP performed in India. This method can be performed in bronchoscopic suites having general anesthesia facilities without the requirement of special gadgets. PMID:24162118

  19. Dilution jet mixing program, phase 3

    NASA Technical Reports Server (NTRS)

    Srinivasan, R.; Coleman, E.; Myers, G.; White, C.

    1985-01-01

    The main objectives for the NASA Jet Mixing Phase 3 program were: extension of the data base on the mixing of single sided rows of jets in a confined cross flow to discrete slots, including streamlined, bluff, and angled injections; quantification of the effects of geometrical and flow parameters on penetration and mixing of multiple rows of jets into a confined flow; investigation of in-line, staggered, and dissimilar hole configurations; and development of empirical correlations for predicting temperature distributions for discrete slots and multiple rows of dilution holes.

  20. Motor-mediated microtubule self-organization in dilute and semi-dilute filament solutions.

    SciTech Connect

    Swaminathan, S.; Ziebert, F.; Aranson, I. S.; Karpeev, D. (Mathematics and Computer Science); ( MSD); (Northwestern Univ.); (UMR CNRS)

    2011-01-01

    We study molecular motor-induced microtubule self-organization in dilute and semi-dilute filament solutions. In the dilute case, we use a probabilistic model of microtubule interaction via molecular motors to investigate microtubule bundle dynamics. Microtubules are modeled as polar rods interacting through fully inelastic, binary collisions. Our model indicates that initially disordered systems of interacting rods exhibit an orientational instability resulting in spontaneous ordering. We study the existence and dynamic interaction of microtubule bundles analytically and numerically. Our results reveal a long term attraction and coalescing of bundles indicating a clear coarsening in the system; microtubule bundles concentrate into fewer orientations on a slow logarithmic time scale. In semi-dilute filament solutions, multiple motors can bind a filament to several others and, for a critical motor density, induce a transition to an ordered phase with a nonzero mean orientation. Motors attach to a pair of filaments and walk along the pair bringing them into closer alignment. We develop a spatially homogenous, mean-field theory that explicitly accounts for a force-dependent detachment rate of motors, which in turn affects the mean and the fluctuations of the net force acting on a filament. We show that the transition to the oriented state can be both continuous and discontinuous when the force-dependent detachment of motors is important.

  1. EDITORIAL: Focus on Dilute Magnetic Semiconductors FOCUS ON DILUTE MAGNETIC SEMICONDUCTORS

    Microsoft Academic Search

    Scott A. Chambers; Bryan Gallagher

    2008-01-01

    This focus issue of New Journal of Physics is devoted to the materials science of dilute magnetic semiconductors (DMS). A DMS is traditionally defined as a diamagnetic semiconductor doped with a few to several atomic per cent of some transition metal with unpaired d electrons. Several kinds of dopant dopant interactions can in principle couple the dopant spins leading to

  2. Geometric Exponents of Dilute Loop Models

    NASA Astrophysics Data System (ADS)

    Provencher, Guillaume; Saint-Aubin, Yvan; Pearce, Paul A.; Rasmussen, Jørgen

    2012-04-01

    The fractal dimensions of the hull, the external perimeter and of the red bonds are measured through Monte Carlo simulations for dilute minimal models, and compared with predictions from conformal field theory and SLE methods. The dilute models used are those first introduced by Nienhuis. Their loop fugacity is ?=-2 \\cos(?/bar{kappa}) where the parameter bar{kappa} is linked to their description through conformal loop ensembles. It is also linked to conformal field theories through their central charges c(bar{kappa})=13-6(bar{kappa}+bar{kappa}^{-1}) and, for the minimal models of interest here, bar{kappa}=p/p' where p and p' are two coprime integers. The geometric exponents of the hull and external perimeter are studied for the pairs ( p, p')=(1,1),(2,3),(3,4),(4,5),(5,6),(5,7), and that of the red bonds for ( p, p')=(3,4). Monte Carlo upgrades are proposed for these models as well as several techniques to improve their speeds. The measured fractal dimensions are obtained by extrapolation on the lattice size H, V??. The extrapolating curves have large slopes; despite these, the measured dimensions coincide with theoretical predictions up to three or four digits. In some cases, the theoretical values lie slightly outside the confidence intervals; explanations of these small discrepancies are proposed.

  3. Diluted Equilibrium Sterile Neutrino Dark Matter

    E-print Network

    Patwardhan, Amol V; Kishimoto, Chad T; Kusenko, Alexander

    2015-01-01

    We present a model where sterile neutrinos with rest masses in the range ~ keV to ~ MeV can be the dark matter and be consistent with all laboratory, cosmological, large scale structure, and X-ray constraints. These sterile neutrinos are assumed to freeze out of thermal and chemical equilibrium with matter and radiation in the very early universe, prior to an epoch of prodigious entropy generation ("dilution") from out-of-equilibrium decay of heavy particles. In this work, we consider heavy, entropy-producing particles in the ~ TeV to ~ EeV rest mass range, possibly associated with new physics at high energy scales. The process of dilution can give the sterile neutrinos the appropriate relic densities, but it also alters their energy spectra so that they could act like cold dark matter, despite relatively low rest masses as compared to conventional dark matter candidates. Moreover, since the model does not rely on active-sterile mixing for producing the relic density, the mixing angles can be small enough to ...

  4. Two Emerging Serial Storage Interfaces for Supporting Digital Libraries: Serial Storage Architecture (SSA) and Fiber Channel-Arbitrated Loop (FC-AL)

    Microsoft Academic Search

    David Hung-chang Du; Tai-sheng Chang; Jenwei Hsieh; Sangyup Shim; Yuewei Wang

    2000-01-01

    Digital libraries require not only high storage space capacity but also high performance storage systems which provide the\\u000a fast accesses to the data. These requirements can not be efficiently supported with the traditional SCSI interfaces. Several\\u000a serial storage interfaces have been proposed for constructing storage systems with high transfer bandwidth, large storage\\u000a capacity, and fault tolerance feature. Among them, Serial

  5. Relaxational dynamics in 3D randomly diluted Ising models

    Microsoft Academic Search

    Martin Hasenbusch; Andrea Pelissetto; Ettore Vicari

    2007-01-01

    We study the purely relaxational dynamics (model A) at criticality in three-dimensional disordered Ising systems whose static critical behaviour belongs to the randomly diluted Ising universality class. We consider the site-diluted and bond-diluted Ising models, and the ± J Ising model along the paramagnetic ferromagnetic transition line. We perform Monte Carlo simulations at the critical point using the Metropolis algorithm

  6. Original article Single dilution ELISAs using soluble piroplasm,

    E-print Network

    Paris-Sud XI, Université de

    of tropical theileriosis. Theileria annulata / single dilution ELISA / piroplasm / schizont / regression Vet theileriosis in tropical and subtropical countries. The disease is of particular eco- nomic importance since

  7. 21 CFR 866.2500 - Microtiter diluting and dispensing device.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES IMMUNOLOGY AND MICROBIOLOGY DEVICES Microbiology Devices § 866.2500 Microtiter diluting and dispensing device. (a) Identification....

  8. 21 CFR 866.2500 - Microtiter diluting and dispensing device.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES IMMUNOLOGY AND MICROBIOLOGY DEVICES Microbiology Devices § 866.2500 Microtiter diluting and dispensing device. (a) Identification....

  9. 21 CFR 866.2500 - Microtiter diluting and dispensing device.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES IMMUNOLOGY AND MICROBIOLOGY DEVICES Microbiology Devices § 866.2500 Microtiter diluting and dispensing device. (a) Identification....

  10. 21 CFR 866.2500 - Microtiter diluting and dispensing device.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES IMMUNOLOGY AND MICROBIOLOGY DEVICES Microbiology Devices § 866.2500 Microtiter diluting and dispensing device. (a) Identification....

  11. 21 CFR 866.2500 - Microtiter diluting and dispensing device.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES IMMUNOLOGY AND MICROBIOLOGY DEVICES Microbiology Devices § 866.2500 Microtiter diluting and dispensing device. (a) Identification....

  12. The Effects of Serial Dependence on Polynomial Regression Models for Individual Growth Data.

    ERIC Educational Resources Information Center

    Burke, John P.; Elashoff, Janet Dixon

    This paper provides a survey of models for the analysis of individual growth data emphasizing the problems posed by serial or time dependence in the application of polynomial regression models. The concepts of serial correlation and autoregressive models are illustrated. It is demonstrated that standard inference procedures may be quite misleading…

  13. Entertainment-Education Radio Serial Drama and Outcomes Related to HIV Testing in Botswana

    ERIC Educational Resources Information Center

    Pappas-Deluca, Katina A.; Kraft, Joan Marie; Galavotti, Christine; Warner, Lee; Mooki, Maungo; Hastings, Phil; Koppenhaver, Todd; Roels, Thierry H.; Kilmarx, Peter H.

    2008-01-01

    "Makgabaneng" is an entertainment-education radio serial drama written and produced in Botswana to promote prevention of HIV. This effort is part of the national response to HIV/AIDS. Broadcast of the serial drama began in August 2001, and two new 15-minute episodes air each week. We examined associations between exposure to "Makgabaneng" and…

  14. Evidence for a clade composed of molluscs with serially repeated structures: Monoplacophorans are related to chitons

    Microsoft Academic Search

    Gonzalo Giribet; Akiko Okusu; Annie R. Lindgren; Stephanie W. Huff; Michael Schrödl; Michele K. Nishiguchi

    2006-01-01

    Monoplacophorans are among the rarest members of the phylum Mollusca. Previously only known from fossils since the Cambrian, the first living monoplacophoran was discovered during the famous second Galathea deep-sea expedition. The anatomy of these molluscs shocked the zoological community for presenting serially repeated gills, nephridia, and eight sets of dorsoventral pedal retractor muscles. Seriality of organs in supposedly independent

  15. Race as Seriality: A Response to David Benatar and Zimitri Erasmus

    ERIC Educational Resources Information Center

    Gouws, A.

    2010-01-01

    In this article I draw on the Sarte's notion of "seriality" as theorized in his book "Dialectic of Reason" and as interpreted by Iris Marion Young. I argue that seriality can be used to escape the false essentialism and identity politics of race as a category for admissions to universities. A series is a social collective whose members are unified…

  16. Microfluidic chip with serially connected filters for improvement of collection efficiency in blood plasma separation

    Microsoft Academic Search

    Taizo Kobayashi; Satoshi Konishi

    This paper describes a novel microfluidic chip, including implementation of serially connected filters for improvement of collection efficiency in blood plasma separation. We have previously reported on a blood plasma separation device, comprising serially connected filters, and its effect on plasma collection efficiency. This paper describes improvement of the device structure for biological blood separation and integration of the filters

  17. The relationship between serial monogamy and rape in the United States (19601995)

    E-print Network

    Starks, Philip

    The relationship between serial monogamy and rape in the United States (1960­1995) Philip T. Starks cannot secure females through traditional methods may seek alternatives, such as rape, to ensure gene) rates of divorce and rape correlate positively. The former result suggests that serial monogamy

  18. Print Serial Cancellations in University Libraries Post 1990: What Do the CAUL Statistics Reveal?

    ERIC Educational Resources Information Center

    Genoni, Paul

    2004-01-01

    Recent reports on Australia's research infrastructure have highlighted the decline in serial subscriptions in academic and research libraries during the 1990s. They have used the annual CAUL statistics in order to support these claims. This article examines the CAUL statistics for serial subscriptions, indicating their numerous flaws when used for…

  19. Haptic Rendering of Topological Constraints to Users Manipulating Serial Virtual Linkages

    E-print Network

    Constantinescu, Daniela

    Haptic Rendering of Topological Constraints to Users Manipulating Serial Virtual Linkages Daniela-- This paper presents an approach for haptic rendering of topological constraints to users operating serial virtual linkages. In the proposed approach, a haptic device controller is designed to penalize users

  20. Transcranial Magnetic Stimulation Reveals Attentional Feedback to Area V1 during Serial Visual Search

    E-print Network

    Paris-Sud XI, Université de

    during Serial Visual Search. PLoS ONE 6(5): e19712. doi:10.1371/journal.pone.0019712 Editor: Michael H (1980) [1], visual search experiments have been used to study attention [1­4]. Visual search tasksTranscranial Magnetic Stimulation Reveals Attentional Feedback to Area V1 during Serial Visual

  1. Equitable Nonlinear Price Regulation: An Alternative Approach to Serial Cost Sharing

    Microsoft Academic Search

    Van Kolpin

    1998-01-01

    This paper examines the serial cost share rule from a perspective of nonlinear pricing. The expenditure function concept is introduced to facilitate the modelling of a wide variety of pricing mechanisms including those featuring head taxes, block pricing, or volume discounts. Axioms on equitable price regulation are shown to characterize the serial expenditure function, a pricing mechanism which induces the

  2. Study to improve operational reliability of 500kV Fixed Serial Compensator

    Microsoft Academic Search

    Qun li; Chaoming Wang

    2008-01-01

    500kV Sanpu Fixed Serial Compensator (FSC) is the first Serial Compensator in extra high voltage power systems in China. The paper introduced the research work of operational reliability improvement on the FSC. The research included defects analysis of protection logic and improvement study, for example bypass breaker failure protection and gap prolonged conducting protection. Electromagnetic compatibility (EMC) analysis of the

  3. A stepper motor and serial communication interface daughter board for educational use

    Microsoft Academic Search

    Gurunath Athalye; Venkat Dronamraju; James M Conrad

    2007-01-01

    This paper presents the design and development of a daughter board consisting of stepper motor drivers and serial interfaces. The purpose of this board is to provide embedded systems students with a tool to design and develop automation applications using stepper motors and simple RS-232C serial communications. The stepper motors used is a bipolar six-wire configuration motor. Software drivers for

  4. Design of the Modbus Communication through Serial Port in QNX Operation System

    Microsoft Academic Search

    Sen Xu; Haipeng Pan; Jia Ren; Jie Su

    2008-01-01

    This paper presents a general design method on serial interface device driver, which is based on the analysis of Modbus protocol and QNX operation system (QNX OS) device driver architecture. Further, the paper specifies serial port communication in C program under QNX OS, and tests its communication with SIEMENS S7-200 PLC. The test result has proved that the method is

  5. The research of synchronization control with PLC based on the bus of serial communications

    Microsoft Academic Search

    Sun Xiang; Zhao Feng

    2010-01-01

    This Paper analyzes the structure of serial industrial fieldbus such as RS485, CAN and agreement stipulations of MODBUS and CAN2.0. It expounds the new PLC synchronous control method based on a serial bus between each module, control strategy of the synchronizing time examination mechanism, pre-synchronizing information processing and `free synchronization' and `forced synchronization' .

  6. An econometric model of serial correlation and illiquidity in hedge fund returns

    Microsoft Academic Search

    Mila Getmansky; Andrew W. Lo; Igor Makarov

    2004-01-01

    The returns to hedge funds and other alternative investments are often highly serially correlated. In this paper, we explore several sources of such serial correlation and show that the most likely explanation is illiquidity exposure and smoothed returns. We propose an econometric model of return smoothing and develop estimators for the smoothing profile as well as a smoothing-adjusted Sharpe ratio.

  7. 9 CFR 113.8 - In vitro tests for serial release.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...Products 1 2010-01-01 2010-01-01 false In vitro tests for serial release. 113.8 Section 113.8 Animals...VECTORS STANDARD REQUIREMENTS Applicability § 113.8 In vitro tests for serial release. (a) Master Seed...

  8. The Brain's Router: A Cortical Network Model of Serial Processing in the Primate Brain

    E-print Network

    Paris-Sud XI, Université de

    The Brain's Router: A Cortical Network Model of Serial Processing in the Primate Brain Ariel-driven behavior. The precise mapping of incoming sensory stimuli onto motor representations relies on a ``router processing on hold, and a slow serial performance at the router stage, resulting in a performance bottleneck

  9. Research on stepper motor control based on Single Chip and serial communication

    Microsoft Academic Search

    Xiaohua Zhang; Bingji Xu

    2010-01-01

    A stepper motor control system is introduced in the paper which adopted high-performance AVR microcontroller Atmega128 and serial communication. The system mainly consists of host computer (PC), console (Single Chip Machine) and a stepper motor. The data is interacted by the serial port between PC and console. Ultimately, the direct control of stepper motor by the PC is achieved. After

  10. Edinburgh Research Explorer Quantitative Serial MRI of the Treated Fibroid Uterus

    E-print Network

    Maizels, Rick

    Edinburgh Research Explorer Quantitative Serial MRI of the Treated Fibroid Uterus Citation Serial MRI of the Treated Fibroid Uterus' PLoS One, vol 9, no. 3, e89809., 10.1371/journal.pone.0089809 of the Treated Fibroid Uterus Kirsty I. Munro1. , Michael J. Thrippleton1,2. , Alistair R. W. Williams1

  11. Singular Configurations of Wrist-Partitioned 6R Serial Robots: a Geometric Perspective for Users

    E-print Network

    Hayes, John

    Singular Configurations of Wrist-Partitioned 6R Serial Robots: a Geometric Perspective for Users M classification. #12;1 Introduction The singularities of wrist-partitioned six-revolute (6R) axis serial robots, McGill University, Canada April 2, 2003 Abstract In this paper the singular configurations of wrist

  12. Male Stereotypes in Radio Serials of the 1930s and 1940s.

    ERIC Educational Resources Information Center

    St John, Jacqueline

    Because they tend to reflect dominant cultural values that are more obvious and taken for granted by historians, male stereotypes in radio serials, or "soap operas," have been ignored. They are prevalent, however, especially in the representative "Golden Age" productions of Anne and Frank Hummert. The Hummerts produced 46% of the serials current…

  13. Visible Korean Human: Improved serially sectioned images of the entire body

    Microsoft Academic Search

    Jin Seo Park; Min Suk Chung; Sung Bae Hwang; Yong Sook Lee; Dong-hwan Har; Hyung Seon Park

    2005-01-01

    The data from the Visible Human Project (VHP) and the Chinese Visible Human (CVH), which are the serially sectioned images of the entire cadaver, are being used to produce three-di- mensional (3-D) images and software. The purpose of our research, the Visible Korean Human (VKH), is to produce an enhanced ver- sion of the serially sectioned images of an entire

  14. Repetition Learning in the Immediate Serial Recall of Visual and Auditory Materials

    ERIC Educational Resources Information Center

    Page, Mike P. A.; Cumming, Nick; Norris, Dennis; Hitch, Graham J.; McNeil, Alan M.

    2006-01-01

    In 5 experiments, a Hebb repetition effect, that is, improved immediate serial recall of an (unannounced) repeating list, was demonstrated in the immediate serial recall of visual materials, even when use of phonological short-term memory was blocked by concurrent articulation. The learning of a repeatedly presented letter list in one modality…

  15. Interference Effects in the Memory for Serially Presented Locations in Clark's Nutcrackers, Nucifraga columbiana

    Microsoft Academic Search

    Jody L. Lewis; Alan C. Kamil

    2006-01-01

    The authors tested the spatial memory of serially presented locations in Clark's nutcrackers (Nucifraga columbiana). Birds were serially presented with locations in an open room. The authors buried a seed in a sand-filled cup at each location and then tested nutcrackers for their memory for each location in the list by using the cluster method. For each item in the

  16. Success is good but failure is not so bad either: serial entrepreneurs and venture capital contracting*

    E-print Network

    Lin, Xiaodong

    Success is good but failure is not so bad either: serial entrepreneurs and venture capital. Finally, far from getting punished for previous failures, even unsuccessful serial entrepreneurs obtain with thriving entrepreneurship in the United States. JEL Classification Code: G24 Keywords: Venture Capital

  17. High-Speed Serial AER on FPGA Hans Kristian Otnes Berge, Philipp Hafliger

    E-print Network

    Häfliger, Philipp

    High-Speed Serial AER on FPGA Hans Kristian Otnes Berge, Philipp H¨afliger University of Oslo using a low voltage differential signaling (LVDS) interface on a commercial FPGA. Many of the latest with an FPGA that handles the external high speed serial link. We judge the design effort to be much smaller

  18. Serial Communication Interface Design Based on Lab VIEW and VC Mix Programming

    Microsoft Academic Search

    Zhou Hongfu; Xiao Xinyan; Tang Yong

    2007-01-01

    This article proposed one serial port communication program method, which the DLL functions called by Lab VIEW. In the method the DLL functions are compiled with VC++, and call the DLL function in LabVIEW. The serial port communication is realized in LabVIEW environment by the mix programming between Lab View and VC++. The hybrid method is used in temperature control

  19. Serial Position Effects in the Identification of Letters, Digits, and Symbols

    ERIC Educational Resources Information Center

    Tydgat, Ilse; Grainger, Jonathan

    2009-01-01

    In 6 experiments, the authors investigated the form of serial position functions for identification of letters, digits, and symbols presented in strings. The results replicated findings obtained with the target search paradigm, showing an interaction between the effects of serial position and type of stimulus, with symbols generating a distinct…

  20. Serially connected solid oxide fuel cells having monolithic cores

    DOEpatents

    Herceg, Joseph E. (Naperville, IL)

    1987-01-01

    A solid oxide fuel cell for electrochemically combining fuel and oxidant for generating galvanic output, wherein the cell core has an array of cell segments electrically serially connected in the flow direction, each segment consisting of electrolyte walls and interconnect that are substantially devoid of any composite inert materials for support. Instead, the core is monolithic, where each electrolyte wall consists of thin layers of cathode and anode materials sandwiching a thin layer of electrolyte material therebetween. Means direct the fuel to the anode-exposed core passageways and means direct the oxidant to the cathode-exposed core passageways; and means also direct the galvanic output to an exterior circuit. Each layer of the electrolyte composite materials is of the order of 0.002-0.01 cm thick; and each layer of the cathode and anode materials is of the order of 0.002-0.05 cm thick. Between 2 and 50 cell segments may be connected in series.

  1. Closed-Loop Analysis of Soft Decisions for Serial Links

    NASA Technical Reports Server (NTRS)

    Lansdowne, Chatwin A.; Steele, Glen F.; Zucha, Joan P.; Schlensinger, Adam M.

    2012-01-01

    Modern receivers are providing soft decision symbol synchronization as radio links are challenged to push more data and more overhead through noisier channels, and software-defined radios use error-correction techniques that approach Shannon s theoretical limit of performance. The authors describe the benefit of closed-loop measurements for a receiver when paired with a counterpart transmitter and representative channel conditions. We also describe a real-time Soft Decision Analyzer (SDA) implementation for closed-loop measurements on single- or dual- (orthogonal) channel serial data communication links. The analyzer has been used to identify, quantify, and prioritize contributors to implementation loss in real-time during the development of software defined radios.

  2. The evolution of photosynthesis in chromist algae through serial endosymbioses

    PubMed Central

    Stiller, John W.; Schreiber, John; Yue, Jipei; Guo, Hui; Ding, Qin; Huang, Jinling

    2014-01-01

    Chromist algae include diverse photosynthetic organisms of great ecological and social importance. Despite vigorous research efforts, a clear understanding of how various chromists acquired photosynthetic organelles has been complicated by conflicting phylogenetic results, along with an undetermined number and pattern of endosymbioses, and the horizontal movement of genes that accompany them. We apply novel statistical approaches to assess impacts of endosymbiotic gene transfer on three principal chromist groups at the heart of long-standing controversies. Our results provide robust support for acquisitions of photosynthesis through serial endosymbioses, beginning with the adoption of a red alga by cryptophytes, then a cryptophyte by the ancestor of ochrophytes, and finally an ochrophyte by the ancestor of haptophytes. Resolution of how chromist algae are related through endosymbioses provides a framework for unravelling the further reticulate history of red algal-derived plastids, and for clarifying evolutionary processes that gave rise to eukaryotic photosynthetic diversity. PMID:25493338

  3. Kondo transport through serially coupled triple quantum dots

    NASA Astrophysics Data System (ADS)

    Jiang, Zhao-Tan; Sun, Qing-Feng; Wang, Yupeng

    2005-07-01

    The equilibrium and nonequilibrium Kondo transport properties of the serially coupled triple quantum dots (TQD’s), including one intermediate dot and two peripheral dots, were studied theoretically. As the Kondo resonance is strongly renormalized in a nontrivial manner by the interdot coupling, the zero-bias conductance shows an asymmetrical double-peak pattern, which is significantly different from the single-conductance-peak pattern that appeared in the TQD device in the Coulomb regime. Furthermore, in the finite-bias case, the current versus the bias shows a peak and a relatively large negative differential conductance is observed. In addition, the superposition of the Kondo spin singlet and the usual naked state is also investigated and strong mixture between them is observed even though they belong to different kinds of states.

  4. Serial MSK modem for the Advanced Communications Satellite Program

    NASA Technical Reports Server (NTRS)

    Stilwell, J. H.

    1982-01-01

    The design and test results of the 550-Mb/s, 110-Mb/s, and 27.5-Mb/s modems for the Advanced Communication Satellite Program are described. The TDMA/FDMA satellite environmental constraints have resulted in several unique features which include total acquisition times of 100 bit times and modem degradation of less than 1.5 dB at 10 to the -6th Pe. Key to the serial implementation of MSK is the resulting hardware simplicity and degradation insensitivity relative to conventionally implemented MSK and QPSK modems. The 110/27.5-Mb/s modems use an integrated circuit specifically developed for the program to perform the key carrier and clock-loop functions.

  5. Liquid sample delivery techniques for serial femtosecond crystallography

    PubMed Central

    Weierstall, Uwe

    2014-01-01

    X-ray free-electron lasers overcome the problem of radiation damage in protein crystallography and allow structure determination from micro- and nanocrystals at room temperature. To ensure that consecutive X-ray pulses do not probe previously exposed crystals, the sample needs to be replaced with the X-ray repetition rate, which ranges from 120 Hz at warm linac-based free-electron lasers to 1 MHz at superconducting linacs. Liquid injectors are therefore an essential part of a serial femtosecond crystallography experiment at an X-ray free-electron laser. Here, we compare different techniques of injecting microcrystals in solution into the pulsed X-ray beam in vacuum. Sample waste due to mismatch of the liquid flow rate to the X-ray repetition rate can be addressed through various techniques. PMID:24914163

  6. Liquid sample delivery techniques for serial femtosecond crystallography.

    PubMed

    Weierstall, Uwe

    2014-07-17

    X-ray free-electron lasers overcome the problem of radiation damage in protein crystallography and allow structure determination from micro- and nanocrystals at room temperature. To ensure that consecutive X-ray pulses do not probe previously exposed crystals, the sample needs to be replaced with the X-ray repetition rate, which ranges from 120 Hz at warm linac-based free-electron lasers to 1 MHz at superconducting linacs. Liquid injectors are therefore an essential part of a serial femtosecond crystallography experiment at an X-ray free-electron laser. Here, we compare different techniques of injecting microcrystals in solution into the pulsed X-ray beam in vacuum. Sample waste due to mismatch of the liquid flow rate to the X-ray repetition rate can be addressed through various techniques. PMID:24914163

  7. An improved integration method in serial femtosecond crystallography.

    PubMed

    Qu, Kun; Zhou, Liang; Dong, Yu-Hui

    2014-05-01

    Recent experiments in serial femtosecond crystallography (SFX) have demonstrated the feasibility of obtaining structural information from nanoscale crystals using X-ray free-electron lasers (XFELs). However, millions of crystals are required to determine one reliable structure. Here, an improved integration algorithm for SFX data processing is reported. By evaluating the dimensions of each crystal and correcting for the geometric factors of single patterns, the effective diffraction intensities, as opposed to the directly measured single-shot pattern diffraction intensities, can be merged to acquire more accurate integrated intensities which can be used for structure determination. This improvement enhances the quality of electron-density maps and decreases the number of diffraction patterns that are needed to solve the crystal structure in SFX experiments. PMID:24816090

  8. Serial analysis of gene expression (SAGE) in rat liver regeneration

    SciTech Connect

    Cimica, Velasco [Georg-August-University of Goettingen, Department of Gastroenterology and Endocrinology, Robert Koch Str. 40, 37075 Goettingen (Germany)]. E-mail: vcimica@aecom.yu.edu; Batusic, Danko [Georg-August-University of Goettingen, Department of Gastroenterology and Endocrinology, Robert Koch Str. 40, 37075 Goettingen (Germany); Haralanova-Ilieva, Borislava [Georg-August-University of Goettingen, Department of Gastroenterology and Endocrinology, Robert Koch Str. 40, 37075 Goettingen (Germany); Chen, Yonglong [Georg-August-University of Goettingen, Department of Developmental Biochemistry, Justus-von-Liebig-Weg 11, 37077 Goettingen (Germany); Hollemann, Thomas [Georg-August-University of Goettingen, Department of Developmental Biochemistry, Justus-von-Liebig-Weg 11, 37077 Goettingen (Germany); Pieler, Tomas [Georg-August-University of Goettingen, Department of Developmental Biochemistry, Justus-von-Liebig-Weg 11, 37077 Goettingen (Germany); Ramadori, Giuliano [Georg-August-University of Goettingen, Department of Gastroenterology and Endocrinology, Robert Koch Str. 40, 37075 Goettingen (Germany)

    2007-08-31

    We have applied serial analysis of gene expression for studying the molecular mechanism of the rat liver regeneration in the model of 70% partial hepatectomy. We generated three SAGE libraries from a normal control liver (NL library: 52,343 tags), from a sham control operated liver (Sham library: 51,028 tags), and from a regenerating liver (PH library: 53,061 tags). By SAGE bioinformatics analysis we identified 40 induced genes and 20 repressed genes during the liver regeneration. We verified temporal expression of such genes by real time PCR during the regeneration process and we characterized 13 induced genes and 3 repressed genes. We found connective tissue growth factor transcript and protein induced very early at 4 h after PH operation before hepatocytes proliferation is triggered. Our study suggests CTGF as a growth factor signaling mediator that could be involved directly in the mechanism of liver regeneration induction.

  9. Biostereometric Analysis Of Serial Growth Changes In The Lips

    NASA Astrophysics Data System (ADS)

    Burke, P. H.; Beard, L. F...; Tee, Judith E.

    1980-07-01

    The aim of this study was to measure serial growth changes of the lips in the human between birth and 19 years of age. The lips were measured three-dimensionally, using short base stereophotogrammetry, in terms of mouth width, mouth height and anterior projection of mid points of upper and lower lips relative to a plane joining the angles of the mouth. Lip shape was measured in angular terms related to these parameters. The bulk of the findings was derived from 112 plots from series for 6 pairs of like-sexed twins between the ages of 9 and 19 years, but the results for one child were included to show how the rapid contrasting growth changes of the baby and infant merge into the pattern for older children.

  10. Assessing sleep consciousness within subjects using a serial awakening paradigm

    PubMed Central

    Siclari, Francesca; LaRocque, Joshua J.; Postle, Bradley R.; Tononi, Giulio

    2013-01-01

    Dreaming—a particular form of consciousness that occurs during sleep—undergoes major changes in the course of the night. We aimed to outline state-dependent features of consciousness using a paradigm with multiple serial awakenings/questionings that allowed for within as well as between subject comparisons. Seven healthy participants who spent 44 experimental study nights in the laboratory were awakened by a computerized sound at 15–30 min intervals, regardless of sleep stage, and questioned for the presence or absence of sleep consciousness. Recall without content (“I was experiencing something but do not remember what”) was considered separately. Subjects had to indicate the content of the most recent conscious experience prior to the alarm sound and to estimate its duration and richness. We also assessed the degree of thinking and perceiving, self- and environment-relatedness and reflective consciousness of the experiences. Of the 778 questionings, 5% were performed during wakefulness, 2% in stage N1, 42% in N2, 33% in N3, and 17% in rapid eye movement (REM) sleep. Recall with content was reported in 34% of non-REM and in 77% of REM sleep awakenings. Sleep fragmentation inherent to the study design appeared to only minimally affect the recall of conscious experiences. Each stage displayed a unique combination of characteristic features of sleep consciousness. In conclusion, our serial awakening paradigm allowed us to collect a large and representative sample of conscious experiences across states of being. It represents a time-efficient method for the study of sleep consciousness that may prove particularly advantageous when combined with techniques such as functional MRI and high-density EEG. PMID:23970876

  11. Serial ImmuKnow assay in stable kidney transplant recipients

    PubMed Central

    Moon, Hyung Hwan; Kim, Tae-seok; Lee, Sanghoon; Song, Sanghyun; Shin, Milljae; Park, Jae Berm; Kim, Jong Man; Jang, Hye Ryoun; Huh, Wooseong; Joh, Jae-Won

    2014-01-01

    Objectives The ImmuKnow assay (cylex Inc., Columbia, MD) has been reported to measure the global immune monitoring tool for organ transplantation recipients. We assess immuKnow ATP values in stable kidney transplant patients. Material and methods Patients who were kidney transplanted between September 2008 and May 2011 were enrolled in the prospective serial ImmuKnow assay study. The criteria of inclusion were living donor kidney transplantation (KT), no evidence of hepatitis B virus (HBV) and hepatitis C virus (HCV) infection, and PRA less than 50%. ImmuKnow assay monitoring was performed at one day before operation, post operative weeks 4, 8, 12, 16, 20, 24, 36 and 52. We excluded patients who had undergone infectious syndrome or rejection episodes during the follow-up period. Results Among 71 patients who were enrolled in prospective serial ImmuKnow assay monitoring, 37 patients were proven to stable KT patients during the follow-up period. Two hundred and twenty-four samples from 37 patients were collected. ImmuKnow value and immunosuppression drug level were compared in post operative weeks 4, 8, 12, 16, 20, 24, 36 and 52. The value of ImmuKnow assay was significantly different depending on the length of time after transplant (p = 0.038). Interestingly, the pre-transplant ImmuKnow values were lower than those of the immediate post-transplant period. Conclusions The ImmuKnow value of stable KT recipients is different according to “time after transplant”. Therefore, “time after transplant” should be considered when applying an ImmuKnow assay in clinical practice.

  12. The influence of editing on the performance of a computer program for serial comparison of electrocardiograms.

    PubMed

    Bonner, R E; Crevasse, L; Ferrer, M I; Greenfield, J C

    1983-04-01

    In this study, three tests of computer ECG analysis function were conducted: 1) interpretation of serial tracings using the single record analysis program, i.e. without serial comparisons; 2) interpretation of the same tracings using a computer-comparison program; and 3) interpretation of these tracings using not only a computer-comparison program but also an editing program which allows amending of each serial record and insertion of any corrections into the computer data base before the next comparison. There was an over-all reduction of 84% in the number of statement changes needed to produce a correct final report by using the combined comparison and editing program. When this combined program was used, 81% of all computer interpretations required no alteration, --a considerable saving of time in analyzing serial electrocardiographic tracings. Serial comparison was required in in 27--45% of all ECG's taken in four medical centers. PMID:6687897

  13. IEEE 1394/firewire a low cost, high speed, digital serial bus

    SciTech Connect

    Gaunt, R.

    1997-05-01

    Does the world need yet another 1/0 bus standard? If you need fast and cheap serial video communication, then the answer is yes. As technology advances, so too must data transport mechanisms advance. You can`t expect RS-232 to support real-time digital video, and if you can`t afford expensive professional serial video interfaces, (such as Sony`s Serial Digital Interface), Firewire may be a good solution. IEEE 1394, or commonly known as Firewire, is a general purpose serial bus that meets many of the 1/0 needs of today`s video and multimedia developers. For those of you who only read the first paragraph, here`s Firewire in a nutshell: It provides a guaranteed transfer rate of 10OMbps or 20OMbps of digital data (such as video direct from camera to computer), over an inexpensive, non-proprietary serial bus. Here is a list of its features.

  14. Dielectric study on dynamics and conformation of poly( d, l-lactic acid) in dilute and semi-dilute solutions

    Microsoft Academic Search

    Jindong Ren; Osamu Urakawa; Keiichiro Adachi

    2003-01-01

    Fractionated samples of d,l-poly(lactic acid) (PLA) were prepared and the dielectric normal mode relaxation was studied for dilute and semi-dilute solutions of the PLA in a good solvent benzene. Results indicate that in the dilute regime the normal mode relaxation time is proportional to [?]Mw in agreement with the Rouse–Zimm theory, where [?] and Mw denote the intrinsic viscosity and

  15. Computational modeling of dilute biomass slurries

    NASA Astrophysics Data System (ADS)

    Sprague, Michael; Stickel, Jonathan; Fischer, Paul; Lischeske, James

    2012-11-01

    The biochemical conversion of lignocellulosic biomass to liquid transportation fuels involves a multitude of physical and chemical transformations that occur in several distinct processing steps (e.g., pretreatment, enzymatic hydrolysis, and fermentation). In this work we focus on development of a computational fluid dynamics model of a dilute biomass slurry, which is a highly viscous particle-laden fluid that can exhibit yield-stress behavior. Here, we model the biomass slurry as a generalized Newtonian fluid that accommodates biomass transport due to settling and biomass-concentration-dependent viscosity. Within a typical mixing vessel, viscosity can vary over several orders of magnitude. We solve the model with the Nek5000 spectral-finite-element solver in a simple vane mixer, and validate against experimental results. This work is directed towards our goal of a fully coupled computational model of fluid dynamics and reaction kinetics for the enzymatic hydrolysis of lignocellulosic biomass.

  16. Delay of Disorder by Diluted Polymers

    NASA Astrophysics Data System (ADS)

    Wagner, Christian; Kityk, Andriy

    2006-03-01

    We study the effect of diluted flexible polymers on a disordered capillary wave state. The waves are generated at an interface of a dyed water sugar solution and a low viscous silicon oil. This allows for a quantitative measurement of the spatio-temporal Fourier spectrum. The primary pattern after the first bifurcation from the flat interface consists of squares. With increasing driving strength we observe a melting of the square pattern. It is replaced by a weak turbulent cascade. The addition of a small amount of polymers to the water layer does not affect the critical acceleration but shifts the disorder transition to higher driving strengths and the short wave length - high frequency fluctuations are suppressed.

  17. Negative magnetophoresis in diluted ferrofluid flow.

    PubMed

    Hejazian, Majid; Nguyen, Nam-Trung

    2015-06-30

    We report magnetic manipulation of non-magnetic particles suspended in diluted ferrofluid. Diamagnetic particles were introduced into a circular chamber to study the extent of their deflection under the effect of a non-uniform magnetic field of a permanent magnet. Since ferrofluid is a paramagnetic medium, it also experiences a bulk magnetic force that in turn induces a secondary flow opposing the main hydrodynamic flow. Sheath flow rate, particle size, and magnetic field strength were varied to examine this complex behaviour. The combined effect of negative magnetophoresis and magnetically induced secondary flow leads to various operation regimes, which can potentially find applications in separation, trapping and mixing of diamagnetic particles such as cells in a microfluidic system. PMID:26054840

  18. Dilution Jet Mixing Program, phase 1

    NASA Technical Reports Server (NTRS)

    Srinivasan, R.; Berenfeld, A.; Mongia, H. C.

    1982-01-01

    The effect of jet to mainstream density ratio, flow area convergence as encounted in transition sections, and nonuniform mainstream profile upstream of dilution orifices on the mixing of a row of jets with a confined cross flow was quantified. It is found that: (1) jet spreading rate in transverse direction is increased with increasing J, H/D and with decreasing S/D; (2) the density ratio has only a second order effect on the jet mixing characteristics for a constant momentum ratio; (3) the temperature distributions in the jet mixing region are strongly influenced by the undisturbed mainstream profile; (4) flow area convergence enhances mixing in radial and transverse directions. An asymmetric convergent duct with flat wall injection has the same jet mixing characteristics as a symmetric convergent duct. An asymmetric convergent duct with slant wall injection has a faster jet spreading rate in the transverse direction.

  19. Electronic properties of dilute Bismide alloys

    NASA Astrophysics Data System (ADS)

    Kini, Rajeev; Karaiskaj, Denis; France, Ryan; Ptak, Aaron; Mascarenhas, Angelo; Tiedje, Tom

    2008-03-01

    The alloying of GaAs with small amounts of N or Bi results in a large reduction of the fundamental band gap, leading to the so called ``giant band gap bowing''. GaAs1-xNx has been the subject of intense investigation in recent years; however the lower mobility of the dilute nitride alloys limits its use for device applications. Bi incorporation is predicted to mainly perturb the valence band and does not significantly affect the electron mobility, thus promising better device performance. We report photoluminescence (PL) measurements of GaAs1-xBix epilayers grown by MBE, carried about at different temperatures (4 - 300K), with above-band gap and selective excitation. Time-resolved PL measurements were also carried out to study the carrier lifetimes of the Bi-related states in these samples.

  20. Dynamical Threshold of Diluteness of Soft Colloids

    SciTech Connect

    Chen, Wei-Ren [ORNL; Do, Changwoo [ORNL; Egami, T [University of Tennessee, Knoxville (UTK); Falus, Peter [ORNL; Li, Xin [ORNL; Liu, Dazhi [ORNL; Porcar, L. [National Institute of Standards and Technology (NIST); Sanchez-Diaz, Luis E [ORNL; Smith, Gregory Scott [ORNL; Wu, Bin [ORNL

    2014-01-01

    The dynamics of soft colloids in solutions is characterized by internal collective motion as well as center-of-mass diffusion. Using neutron scattering we demonstrate that the competition between the relaxation processes associated with these two degrees of freedom results in strong dependence of dynamics and structure on colloid concentration, c, well below the overlap concentration c*. Triggered by the increasing inter-particle collisions, substantial structural dehydration and slowing-down of internal dynamics occurs before geometrically defined colloidal overlap develops. This observation is surprising since it is generally believed that the internal dynamics and conformation of soft colloidal particles essentially remain invariant below c*. The competition between these two relaxation processes gives rise to a new dynamically-defined dilute threshold concentration well below c*.

  1. Dilute Oxygen Combustion - Phase 3 Report

    SciTech Connect

    Riley, Michael F.

    2000-05-31

    Dilute Oxygen Combustion (DOC) burners have been successfully installed and operated in the reheat furnace at Auburn Steel Co., Inc., Auburn, NY, under Phase 3 of the Dilute Oxygen Combustion project. Two new preheat zones were created employing a total of eight 6.5 MMBtu/hr capacity burners. The preheat zones provide a 30 percent increase in maximum furnace production rate, from 75 tph to 100 tph. The fuel rate is essentially unchanged, with the fuel savings expected from oxy-fuel combustion being offset by higher flue gas temperatures. When allowance is made for the high nitrogen level and high gas phase temperature in the furnace, measured NOx emissions are in line with laboratory data on DOC burners developed in Phase 1 of the project. Burner performance has been good, and there have been no operating or maintenance problems. The DOC system continues to be used as part of Auburn Steel's standard reheat furnace practice. High gas phase temperature is a result of the high firing density needed to achieve high production rates, and little opportunity exists for improvement in that area. However, fuel and NOx performance can be improved by further conversion on furnace zones to DOC burners, which will lower furnace nitrogen levels. Major obstacles are cost and concern about increased formation of oxide scale on the steel. Oxide scale formation may be enhanced by exposure of the steel to higher concentrations of oxidizing gas components (primarily products of combustion) in the higher temperature zones of the furnace. Phase 4 of the DOC project will examine the rate of oxide scale formation in these higher temperature zones and develop countermeasures that will allow DOC burners to be used successfully in these furnace zones.

  2. Dilute Oxygen Combustion Phase 3 Final Report

    SciTech Connect

    Riley, M.F.; Ryan, H.M.

    2000-05-31

    Dilute Oxygen Combustion (DOC) burners have been successfully installed and operated in the reheat furnace at Auburn Steel Co., Inc., Auburn, NY, under Phase 3 of the Dilute Oxygen Combustion project. Two new preheat zones were created employing a total of eight 6.5 MMBtu/hr capacity burners. The preheat zones provide a 30 percent increase in maximum furnace production rate, from 75 tph to 100 tph. The fuel rate is essentially unchanged, with the fuel savings expected from oxy-fuel combustion being offset by higher flue gas temperatures. When allowance is made for the high nitrogen level and high gas phase temperature in the furnace, measured NOx emissions are in line with laboratory data on DOC burners developed in Phase 1 of the project. Burner performance has been good and there have been no operating or maintenance problems. The DOC system continues to be used as part of Auburn Steel?s standard reheat furnace practice. High gas phase temperature is a result of the high firing density needed to achieve high production rates, and little opportunity exists for improvement in that area. However, fuel and NOx performance can be improved by further conversion of furnace zones to DOC burners, which will lower furnace nitrogen levels. Major obstacles are cost and concern about increased formation of oxide scale on the steel. Oxide scale formation may be enhanced by exposure of the steel to higher concentrations of oxidizing gas components (primarily products of combustion) in the higher temperature zones of the furnace. Phase 4 of the DOC project will examine the rate of oxide scale formation in these higher temperature zones and develop countermeasures that will allow DOC burners to be used successfully in these furnace zones.

  3. Solid-phase microextraction and gas chromatography olfactometry analysis of successively diluted samples. A new approach of the aroma extract dilution analysis applied to the characterization of wine aroma.

    PubMed

    Martí, Maria Pilar; Mestres, Montserrat; Sala, Cristina; Busto, Olga; Guasch, Josep

    2003-12-31

    The relationship between the composition and the aroma of the wine can be established by using gas chromatography with olfactometric detection (sniffing or GCO), which combines the chromatographic response with the human nose response. To evaluate the contribution of the odor compounds in wine aroma, we designed a new approach of the aroma extract dilution analysis (AEDA) that lies in the GCO analysis of serially diluted wine samples using headspace solid-phase microextraction (HS-SPME) as the extraction technique. The fiber coating used was Flex divinyl-carboxen-polydimethylsiloxane. The method developed was applied to determine the aromatic composition of a red Grenache wine from Priorat (Spain). The method allows 38 important odorants to be determined in the AEDA study, 30 of them precisely identified. These results are similar to those reported by other studies related to this variety of wine. HS-SPME is a suitable technique to obtain representative extracts of wine aroma with several advantages such as simplicity, speediness, and little sample manipulation. PMID:14690365

  4. Infinite dilution activity coefficients in chemical, environmental and biochemical engineering

    Microsoft Academic Search

    S. I. Sandler

    1996-01-01

    Here we briefly review several methods by which infinite dilution activity coefficients can be obtained, and then consider how such data can be used. In particular, we examine the accuracy of predictions of vapor-liquid equilibria over the complete concentration range, and over a range of temperatures based on infinite dilution activity coefficient data at a single temperature. Next, we review

  5. THE DILUTION/FLUSHING TECHNIQUE IN LAKE RESTORATION

    EPA Science Inventory

    Dilution/flushing has been documented as an effective restoration technique for Moses and Green Lakes in Washington State. The dilution water added in both lakes was low in nitrogen and phosphorus content relative to the lake or normal input water. Consequently, lake nutrient con...

  6. Specialized postsynaptic morphology enhances neurotransmitter dilution and high-frequency signaling at an auditory synapse.

    PubMed

    Graydon, Cole W; Cho, Soyoun; Diamond, Jeffrey S; Kachar, Bechara; von Gersdorff, Henrique; Grimes, William N

    2014-06-11

    Sensory processing in the auditory system requires that synapses, neurons, and circuits encode information with particularly high temporal and spectral precision. In the amphibian papillia, sound frequencies up to 1 kHz are encoded along a tonotopic array of hair cells and transmitted to afferent fibers via fast, repetitive synaptic transmission, thereby promoting phase locking between the presynaptic and postsynaptic cells. Here, we have combined serial section electron microscopy, paired electrophysiological recordings, and Monte Carlo diffusion simulations to examine novel mechanisms that facilitate fast synaptic transmission in the inner ear of frogs (Rana catesbeiana and Rana pipiens). Three-dimensional anatomical reconstructions reveal specialized spine-like contacts between individual afferent fibers and hair cells that are surrounded by large, open regions of extracellular space. Morphologically realistic diffusion simulations suggest that these local enlargements in extracellular space speed transmitter clearance and reduce spillover between neighboring synapses, thereby minimizing postsynaptic receptor desensitization and improving sensitivity during prolonged signal transmission. Additionally, evoked EPSCs in afferent fibers are unaffected by glutamate transporter blockade, suggesting that transmitter diffusion and dilution, and not uptake, play a primary role in speeding neurotransmission and ensuring fidelity at these synapses. PMID:24920639

  7. The Mann-Kendall Test Modified by Effective Sample Size to Detect Trend in Serially Correlated Hydrological Series

    Microsoft Academic Search

    Sheng Yue; ChunYuan Wang

    2004-01-01

    The non-parametric Mann-Kendall (MK) statistical test has been popularly used to assess the significance of trend in hydrological time series. The test requires sample data to be serially independent. When sample data are serially correlated, the presence of serial correlation in time series will affect the ability of the test to correctly assess the significance of trend. To eliminate the

  8. Natural born killers?: the development of the sexually sadistic serial killer.

    PubMed

    Johnson, B R; Becker, J V

    1997-01-01

    Today's society seems enthralled with serial killers in the news and the media. Forensic psychiatrists often interview serial killers after they have been caught. There are retrospective studies and case reports of individuals who have committed sexually sadistic serial murders. However, there exists a dearth of case reports on adolescents who have expressed serious fantasies about becoming serial killer prior to actualizing their fantasy. This article presents nine clinical cases of 14- to 18-year-olds who have clinically significant fantasies of becoming a serial killer. Similarities exist in these adolescent cases when compared with retrospective studies and case reports of serial killers on the role of sexually sadistic fantasies and actual killings. Since it has been established that sexual paraphilias may develop at a young age, one can surmise that sadistic paraphilias may also develop in some adolescents. The question is posed, can we predict which of these adolescents may go on to actually become serial killers? This article focuses on how the sexually sadistic fantasy can eventually be acted out and possible motives for the act to be repeated multiple times. Finally, recommendations are made about assessing and treating a youngster who expresses violent sexually sadistic killing fantasies so that attempts can be made to interrupt the progression to actual killing. PMID:9323659

  9. Dilute Surfactant Methods for Carbonate Formations

    SciTech Connect

    Kishore K. Mohanty

    2006-02-01

    There are many fractured carbonate reservoirs in US (and the world) with light oil. Waterflooding is effective in fractured reservoirs, if the formation is water-wet. Many fractured carbonate reservoirs, however, are mixed-wet and recoveries with conventional methods are low (less than 10%). The process of using dilute anionic surfactants in alkaline solutions has been investigated in this work for oil recovery from fractured oil-wet carbonate reservoirs both experimentally and numerically. This process is a surfactant-aided gravity drainage where surfactant diffuses into the matrix, lowers IFT and contact angle, which decrease capillary pressure and increase oil relative permeability enabling gravity to drain the oil up. Anionic surfactants have been identified which at dilute concentration of 0.05 wt% and optimal salinity can lower the interfacial tension and change the wettability of the calcite surface to intermediate/water-wet condition as well or better than the cationic surfactant DTAB with a West Texas crude oil. The force of adhesion in AFM of oil-wet regions changes after anionic surfactant treatment to values similar to those of water-wet regions. The AFM topography images showed that the oil-wetting material was removed from the surface by the anionic surfactant treatment. Adsorption studies indicate that the extent of adsorption for anionic surfactants on calcite minerals decreases with increase in pH and with decrease in salinity. Surfactant adsorption can be minimized in the presence of Na{sub 2}CO{sub 3}. Laboratory-scale surfactant brine imbibition experiments give high oil recovery (20-42% OOIP in 50 days; up to 60% in 200 days) for initially oil-wet cores through wettability alteration and IFT reduction. Small (<10%) initial gas saturation does not affect significantly the rate of oil recovery in the imbibition process, but larger gas saturation decreases the oil recovery rate. As the core permeability decreases, the rate of oil recovery reduces, and this reduction can be scaled by the gravitational dimensionless time. Mechanistic simulation of core-scale surfactant brine imbibition matches the experimentally observed imbibition data. In-situ distributions observed through simulation indicate that surfactant diffusion (which depends on temperature and molecular weight) is the rate limiting step. Most of the oil is recovered through gravitational forces. Oil left behind at the end of this process is at its residual oil saturation. The capillary and Bond numbers are not large enough to affect the residual oil saturation. At the field-scale, 50% of the recoverable oil is produced in about 3 years if the fracture spacing is 1 m and 25% if 10 m, in the example simulated. Decreasing fracture spacing and height, increasing permeability, and increasing the extent of wettability alteration increase the rate of oil recovery from surfactant-aided gravity drainage. This dilute surfactant aided gravity-drainage process is relatively cheap. The chemical cost for a barrel of oil produced is expected to be less than $1.

  10. Quantitative Serial MRI of the Treated Fibroid Uterus

    PubMed Central

    Williams, Alistair R. W.; McKillop, Graham; Walker, Jane; Horne, Andrew W.; Newby, David E.; Anderson, Richard A.; Semple, Scott I.; Marshall, Ian; Lewis, Steff C.; Millar, Robert P.; Bastin, Mark E.; Critchley, Hilary O. D.

    2014-01-01

    Objective There are no long-term medical treatments for uterine fibroids, and non-invasive biomarkers are needed to evaluate novel therapeutic interventions. The aim of this study was to determine whether serial dynamic contrast-enhanced MRI (DCE-MRI) and magnetization transfer MRI (MT-MRI) are able to detect changes that accompany volume reduction in patients administered GnRH analogue drugs, a treatment which is known to reduce fibroid volume and perfusion. Our secondary aim was to determine whether rapid suppression of ovarian activity by combining GnRH agonist and antagonist therapies results in faster volume reduction. Methods Forty women were assessed for eligibility at gynaecology clinics in the region, of whom thirty premenopausal women scheduled for hysterectomy due to symptomatic fibroids were randomized to three groups, receiving (1) GnRH agonist (Goserelin), (2) GnRH agonist+GnRH antagonist (Goserelin and Cetrorelix) or (3) no treatment. Patients were monitored by serial structural, DCE-MRI and MT-MRI, as well as by ultrasound and serum oestradiol concentration measurements from enrolment to hysterectomy (approximately 3 months). Results A volumetric treatment effect assessed by structural MRI occurred by day 14 of treatment (9% median reduction versus 9% increase in untreated women; P?=?0.022) and persisted throughout. Reduced fibroid perfusion and permeability assessed by DCE-MRI occurred later and was demonstrable by 2–3 months (43% median reduction versus 20% increase respectively; P?=?0.0093). There was no apparent treatment effect by MT-MRI. Effective suppression of oestradiol was associated with early volume reduction at days 14 (P?=?0.041) and 28 (P?=?0.0061). Conclusion DCE-MRI is sensitive to the vascular changes thought to accompany successful GnRH analogue treatment of uterine fibroids and should be considered for use in future mechanism/efficacy studies of proposed fibroid drug therapies. GnRH antagonist administration does not appear to accelerate volume reduction, though our data do support the role of oestradiol suppression in GnRH analogue treatment of fibroids. Trial Registration ClinicalTrials.gov NCT00746031 PMID:24608161

  11. Dominance of the odometer over serial landmark learning in honeybee navigation

    NASA Astrophysics Data System (ADS)

    Menzel, Randolf; Fuchs, Jacqueline; Nadler, Leonard; Weiss, Benjamin; Kumbischinski, Nicole; Adebiyi, Daniel; Hartfil, Sergej; Greggers, Uwe

    2010-08-01

    Honeybees use their visual flow field to measure flight distance. It has been suggested that the experience of serial landmarks encountered on the flight toward a feeding place contributes to distance estimation. Here, we address this question by tracing the flight paths of individual bees with a harmonic radar system. Bees were trained along an array of three landmarks (tents), and the distance between these landmarks was either increased or decreased under two test conditions. We find that absolute distance estimation dominates the search for the feeding place, but serial position effects are also found. In the latter case, bees search only or additionally at locations determined by serial experience of the landmarks.

  12. Development of gallium arsenide high-speed, low-power serial parallel interface modules: Executive summary

    NASA Technical Reports Server (NTRS)

    1988-01-01

    Final report to NASA LeRC on the development of gallium arsenide (GaAS) high-speed, low power serial/parallel interface modules. The report discusses the development and test of a family of 16, 32 and 64 bit parallel to serial and serial to parallel integrated circuits using a self aligned gate MESFET technology developed at the Honeywell Sensors and Signal Processing Laboratory. Lab testing demonstrated 1.3 GHz clock rates at a power of 300 mW. This work was accomplished under contract number NAS3-24676.

  13. Rheological characterization of dilute acid pretreated softwood.

    PubMed

    Wiman, Magnus; Palmqvist, Benny; Tornberg, Eva; Lidén, Gunnar

    2011-05-01

    Large-scale bioethanol production from lignocellulosic biomass will require high solids loading in the enzymatic hydrolysis step. However, slurries of pretreated lignocelluloses are complex fluids due to the fibrous nature, especially at high concentrations of water insoluble solids (WIS). A prerequisite for dealing with transport issues and for developing efficient full-scale processes is a fundamental understanding of the flow properties of pretreated lignocellulose. A comprehensive rheological characterization of dilute acid pretreated spruce has been carried out in this study, accounting for the effects of WIS concentration, particle size distribution (PSD), and the degree of enzymatic hydrolysis. The rheology of pretreated spruce slurries was found to be strongly dependent on the WIS concentration. The storage modulus (G'(LVR)) and yield stress showed typical power-law dependencies on volume fraction and WIS content. Milling of the pretreated material resulted in significantly higher yield stress and viscosity, likely due to narrower PSD, which suggests that the strength of the network of the coarsest fibers determines the rheology of these materials to a large extent. During enzymatic hydrolysis, yield stress and viscosity decreased dramatically, partly due to decreasing WIS content, but possibly also due to changes in fiber properties such as the chemical composition. PMID:21449021

  14. DILUTE SURFACTANT METHODS FOR CARBONATE FORMATIONS

    SciTech Connect

    Kishore K. Mohanty

    2003-07-01

    There are many carbonate reservoirs in US (and the world) with light oil and fracture pressure below its minimum miscibility pressure (or reservoir may be naturally fractured). Many carbonate reservoirs are naturally fractured. Waterflooding is effective in fractured reservoirs, if the formation is water-wet. Many fractured carbonate reservoirs, however, are mixed-wet and recoveries with conventional methods are low (less than 10%). Thermal and miscible tertiary recovery techniques are not effective in these reservoirs. Surfactant flooding (or huff-n-puff) is the only hope, yet it was developed for sandstone reservoirs in the past. The goal of this research is to evaluate dilute (hence relatively inexpensive) surfactant methods for carbonate formations and identify conditions under which they can be effective. We have conducted adsorption, phase behavior and wettability studies. Addition of Na{sub 2}CO{sub 3} decreases IFT with a minimum at about 0.2 M. Addition of surfactant decreases IFT further. In the absence of surfactant the minerals are oil wet after aging with crude oil. Addition of surfactant solution decreases the contact angle to intermediate wettability. Addition of Na{sub 2}CO{sub 3} decreases anionic surfactant adsorption on calcite surface. Plans for the next quarter include conducting adsorption, phase behavior and wettability studies.

  15. Chain Dynamics in a Dilute Magnetorheological Fluid

    NASA Technical Reports Server (NTRS)

    Liu, Jing; Hagenbuchle, Martin

    1996-01-01

    The structure, formation, and dynamics of dilute, mono-dispersive ferrofluid emulsions in an external magnetic field have been investigated using dynamic light scattering techniques. In the absence of the magnetic field, the emulsion particles are randomly distributed and behave like hard spheres in Brownian motion. An applied magnetic field induces a magnetic dipole moment in each particle. Dipolar interactions between particles align them into chains where correlation functions show two decay processes. The short-time decay shows the motion of straight chains as a whole where the apparent chain length increases with the applied magnetic field and the particle volume fraction. Good scaling results are obtained showing that the apparent chain length grows with time following a power law with exponent of 0.6 and depends on the applied field, particle volume fraction, and diffusion constant of the particles. The long-time decay in the correlation function shows oscillation when the chains reach a certain length with time and stiffness with threshold field This result shows that chains not only fluctuate, but move in a periodic motion with a frequency of 364 Hz at lambda = 15. It may suggest the existence of phonons. This work is the first step in the understanding of the structure formation, especially chain coarsening mechanism, of magnetorheological (MR) fluids at higher volume fractions.

  16. Boundary layers in dilute particle suspensions

    NASA Astrophysics Data System (ADS)

    Foster, M. R.; Duck, P. W.; Hewitt, R. E.

    2005-11-01

    Boundary layers in dilute particle suspensions have been found to have a number of interesting features. The development of a singularity at the wall has recently been found to be common to many of these flows, ootnotetextSee Foster, Duck & Hewitt, J. Fluid Mech. 474 (2003) and Duck, Hewitt & Foster, J. Fluid Mech. 514, (2004) and we note here that Falkner-Skan-type boundary layers (layers with `edge' velocity proportional to x^m) and the boundary layer under a linearly decelerating flow ootnotetextHowarth (1934) also break down at the wall in the absence of gravity, but can be singularity-free for heavy particles. In addition, we find that matching of the Falkner-Skan profile to an outer flow is problematic for some values of m, though the case most studied heretofore---the Blasius case (for m=0)---does not feature this difficulty. Finally, a boundary layer that does not develop a singularity takes on a the typical Falkner-Skan self-similarity far downstream, in the absence of gravity. For heavy particles, however, gravity causes a constant drift of particles toward the wall, and a constant-thickness far-downstream layer. The far-downstream behavior in a light-particle suspension is different, with a particle-free zone between the wall and a particle `shock' that grows like x^(1-m).

  17. DILUTE SURFACTANT METHODS FOR CARBONATE FORMATIONS

    SciTech Connect

    Kishore K. Mohanty

    2005-04-01

    There are many carbonate reservoirs in US (and the world) with light oil and fracture pressure below its minimum miscibility pressure (or reservoir may be naturally fractured). Many carbonate reservoirs are naturally fractured. Waterflooding is effective in fractured reservoirs, if the formation is water-wet. Many fractured carbonate reservoirs, however, are mixed-wet and recoveries with conventional methods are low (less than 10%). Thermal and miscible tertiary recovery techniques are not effective in these reservoirs. Surfactant flooding (or huff-n-puff) is the only hope, yet it was developed for sandstone reservoirs in the past. The goal of this research is to evaluate dilute (hence relatively inexpensive) surfactant methods for carbonate formations and identify conditions under which they can be effective. Laboratory imbibition tests show about 61% oil recovery in the case of Alf-38 and 37% in the case of DTAB. A numerical model has been developed that fits the rate of imbibition of the laboratory experiment. Field-scale fracture block simulation shows that as the fracture spacing increases, so does the time of recovery. Plans for the next quarter include simulation studies.

  18. DILUTE SURFACTANT METHODS FOR CARBONATE FORMATIONS

    SciTech Connect

    Kishore K. Mohanty

    2004-01-01

    There are many carbonate reservoirs in US (and the world) with light oil and fracture pressure below its minimum miscibility pressure (or reservoir may be naturally fractured). Many carbonate reservoirs are naturally fractured. Waterflooding is effective in fractured reservoirs, if the formation is water-wet. Many fractured carbonate reservoirs, however, are mixed-wet and recoveries with conventional methods are low (less than 10%). Thermal and miscible tertiary recovery techniques are not effective in these reservoirs. Surfactant flooding (or huff-n-puff) is the only hope, yet it was developed for sandstone reservoirs in the past. The goal of this research is to evaluate dilute (hence relatively inexpensive) surfactant methods for carbonate formations and identify conditions under which they can be effective. Anionic surfactants (SS-6656, Alfoterra 35, 38, 63,65,68) have been identified which can change the wettability of the calcite surface to intermediate/water-wet condition as well or better than the cationic surfactant DTAB with a West Texas crude oil in the presence of Na{sub 2}CO{sub 3}. All the carbonate surfaces (Lithographic Limestone, Marble, Dolomite and Calcite) show similar behavior with respect to wettability alteration with surfactant 4-22. Anionic surfactants (5-166, Alfoterra-33 and Alfoterra-38 and Alfoterra-68), which lower the interfacial tension with a West Texas crude oil to very low values (<10{sup -2} nM/m), have also been identified. Plans for the next quarter include conducting wettability, mobilization, and imbibition studies.

  19. DILUTE SURFACTANT METHODS FOR CARBONATE FORMATIONS

    SciTech Connect

    Kishore K. Mohanty

    2003-07-01

    There are many carbonate reservoirs in US (and the world) with light oil and fracture pressure below its minimum miscibility pressure (or reservoir may be naturally fractured). Many carbonate reservoirs are naturally fractured. Waterflooding is effective in fractured reservoirs, if the formation is water-wet. Many fractured carbonate reservoirs, however, are mixed-wet and recoveries with conventional methods are low (less than 10%). Thermal and miscible tertiary recovery techniques are not effective in these reservoirs. Surfactant flooding (or huff-n-puff) is the only hope, yet it was developed for sandstone reservoirs in the past. The goal of this research is to evaluate dilute (hence relatively inexpensive) surfactant methods for carbonate formations and identify conditions under which they can be effective. We have conducted adsorption, phase behavior, interfacial tension (IFT) and wettability studies. Addition of Na{sub 2}CO{sub 3} decreases IFT with a minimum at about 0.2 M. Addition of surfactant decreases IFT further. In the absence of surfactant the minerals are oil-wet after aging with crude oil. Addition of surfactant solution decreases the contact angle to intermediate-wet for many surfactants and water-wet for one surfactant. Addition of Na{sub 2}CO{sub 3} decreases anionic surfactant adsorption on calcite surface. Plans for the next quarter include conducting core adsorption, phase behavior, wettability and mobilization studies.

  20. Self-Compensation in Dilute Magnetic Semiconductors

    NASA Astrophysics Data System (ADS)

    Erwin, Steven C.

    2003-03-01

    Ferromagnetism in Mn-doped GaAs is generally believed to be mediated by holes created by the substitution of Mn for Ga. Over a wide range of Mn concentrations, measured hole concentrations are much smaller than expected from simple electron counting, suggesting a robust compensation mechanism. A similar effect is observed in Mn-doped Ge, where antisites cannot account for the compensation. We present a theory of self-compensation by interstitial Mn in Mn-doped ferromagnetic semiconductors. Using density-functional theory, we show that under the non-equilibrium conditions of growth, interstitial Mn is easily formed near the surface by a simple low-energy adsorption pathway. In GaAs, isolated interstitial Mn is an electron donor, each compensating two substitutional Mn acceptors. Within an impurity-band model, partial compensation actually promotes ferromagnetic order below the metal-insulator transition, with the highest Curie temperature occurring for 0.5 holes per substitutional Mn. Finally, we show that the observed properties of another dilute ferromagnetic semiconductor, Co-doped TiO2 are, in a similar way, most naturally explained as arising from self-compensation of Co substitutionals by Co interstitials.

  1. Low temperature photoluminescence from dilute bismides

    NASA Astrophysics Data System (ADS)

    Kini, R. N.; Mascarenhas, A.; France, R.; Ptak, A. J.

    2008-12-01

    We report on photoluminescence measurements of GaAs(1-x)Bix thin films containing dilute concentration (x ?0.045%) of isoelectronic impurity Bi. At a temperature of 4 K, we observed a sharp emission line at ˜1.510 eV and a series of undulations in an energy range of ˜20 meV below it. We attribute the sharp line at ˜1.510 eV to the recombination of excitons bound to a complex formed by unintentionally incorporated acceptor or donor atoms in the samples. Undulations observed below the sharp line at 1.510 eV are assigned to the vibronic levels of the acceptors, generated by the dynamic Jahn-Teller effect due to the coupling between the holes bound to Bi and acceptors. The sharp line at ˜1.510 eV and the undulation peaks show a redshift with increasing Bi concentration due to the decrease in band gap as a result of the strong perturbation to the GaAs band structure induced by isoelectronic Bi impurities. No spectral evidence for isolated Bi forming a bound state in GaAs was seen and similar to the case of Bi in GaP, no Bi-Bi pair states were observed.

  2. Decomposition of dilute trichloroethylene by nonthermal plasma

    SciTech Connect

    Oda, Tetsuji; Takahashi, Tadashi; Tada, Keiko [Univ. of Tokyo (Japan). Dept. of Electrical Engineering] [Univ. of Tokyo (Japan). Dept. of Electrical Engineering

    1999-03-01

    Decomposition performance of a dilute toxic organic compound, trichloroethylene (TCE), in air by using nonthermal plasma processing was studied extensively. The nonthermal plasma was generated by the high-frequency (2 kHz) or commercial-frequency (50 Hz) barrier discharge in a fused silica tube. Three types of reactors, bolt type, rod type (both are barrier-discharge type), and coil type (surface-discharge type), were tested. Analysis of byproducts, residual materials, and end products generated by the plasma process was performed by a gas chromatography mass spectrometer of gas chromatography. Most organic byproducts decrease with an increase of the electric discharge power, but only toxic phosgene increases with the increase of the discharge power. As a post process, NaOH solution was used to test effluent from the plasma reactor. The solution was found effective in phosgene absorption. Comparison between nonthermal plasma and UV irradiation for TCE decomposition was also made. In regard to the energy efficiency of the TCE decomposition, UV irradiation is found much better than discharge plasma.

  3. DILUTE SURFACTANT METHODS FOR CARBONATE FORMATIONS

    SciTech Connect

    Kishore K. Mohanty

    2005-07-01

    There are many carbonate reservoirs in US (and the world) with light oil and fracture pressure below its minimum miscibility pressure (or reservoir may be naturally fractured). Many carbonate reservoirs are naturally fractured. Waterflooding is effective in fractured reservoirs, if the formation is water-wet. Many fractured carbonate reservoirs, however, are mixed-wet and recoveries with conventional methods are low (less than 10%). Thermal and miscible tertiary recovery techniques are not effective in these reservoirs. Surfactant flooding (or huff-n-puff) is the only hope, yet it was developed for sandstone reservoirs in the past. The goal of this research is to evaluate dilute (hence relatively inexpensive) surfactant methods for carbonate formations and identify conditions under which they can be effective. Laboratory imbibition tests show that imbibition rate is not very sensitive to the surfactant concentration (in the range of 0.05-0.2 wt%) and small amounts of trapped gas saturation. It is however very sensitive to oil permeability and water-oil-ratio. Less than 0.5 M Na2CO3 is needed for in situ soap generation and low adsorption; NaCl can be added to reach the necessary total salinity. The simulation result matches the laboratory imbibition experimental data. Small fracture spacing and high permeability would be needed for high rate of recovery.

  4. Serial Assessment of Physiological Evaluation Indices for Repetitive Mental Workload

    NASA Astrophysics Data System (ADS)

    Nozawa, Akio; Karita, Keita

    The objective of this study is to evaluate the effect of daily repetitive mental workload on physiological indices. Especially, the index derived from the nasal skin temperature(NST) measured by the infrared thermography was focused. The NST was the physiological index representing the sympathetic nervous system activity. The NST declines with the sympathetic nervous system's activation. The mental workload causes sympathetic nervous system's activation, so the mental workload can be measured by NST as a declining temperature. We have found that the relationship between the amount of mental workload and the NST declining under time pressure, even more complex stimuli. However, there's no study on evaluating the NST measured for the repetitive mental workload for certain period of time. In this paper, the NST and other physiological indices, which were Fm? wave component of Electroencephalograms(EEG) and high frequency component(HF) of R-wave interval time series of Electrocardiograms(ECG) were serially measured and evaluated on repetitive mental workload. Significant difference was found between those NST indices in each experiment by paired t-test. A stability of NST as an evaluation index for MWL was proved.

  5. Three-dimensional reconstruction from serial sections using triakis

    NASA Astrophysics Data System (ADS)

    Preston, Kendall, Jr.; Siderits, Richard

    1992-06-01

    Various methods for serial-section reconstruction from images of tissue sections have been investigated using the Apple Macintosh-based program Triakis. Triakis is a three-dimensional mathematical morphology software package that processes 3-D binary data in the FCC (face centered cubic) tessellation by means of LUT (look-up table) manipulations. Tissue sections have been obtained from a breast tumor and traced using PC3-D [Jandel Scientific, Corte Madera, Calif.] were transferred via a software interface to Triakis. Triakis uses the Apple Macintosh polygon filling routine to fill each tracing with binary ones. Next, ranking transforms in the binary FCC tessellation were used in order to demonstrate their capability of smoothly interpolating from one section to the other. The optimum transform is based on the placement of the binarized tissue sections in hexagonal planes and uses three cycles of a rank three transform for the initial interpolation. Irregularities are then removed from the resulting solid by seven cycles of a compound transform. Thereafter, the filled polygons were eroded using Triakis and, from the annular histogram, the spatial interrelationships of malignant cells within the tumor determined.

  6. Serial exercise gated radionuclide ventriculograms (RVG) in monitoring doxorubicin cardiotoxicity

    SciTech Connect

    Goldstein, H.A.; Lahoda, J.; Fox, L.

    1985-05-01

    The resting RVG (Radionuclide Ventriculograms) are demonstrated to be an effective monitor of the cardiotoxicity of doxorubicin. The exercise RVG has not been as well studied to see if it yields additional information or detects toxicity effects earlier. Sixteen patients receiving doxorubicin for chemotherapy had 2-6 serial exercise studies with intervals between studies of 1 month to 15 months. The patients exercised varying amounts with cardiac work indicated by their double products (HR x Sys. BP). Although all patients started with a normal resting LVEF (>50%), 5 of the 16 did not have a normal response (greater than or equal to5% increase in LVEF) with initial exercise study. Of the 11 patients with an initially normal response to exercise, on at least one subsequent study, 3 had an abnormal response to exercise. On a later follow up study 1 of these 3 patients again had a normal response to exercise. Six of these 11 patients had had RVG evidence of cardiotoxicity. Four of these 6 patients had continually normal exercise responses, while 2 of these 5 patients had had an abnormal exercise response. An initial exercise RVG may be reasonable to detect unsuspected CAD in cancer victims. These patients are reported to be more sensitive to the toxic effects of doxorubicin. Follow up exercise RVGs do not contribute useful information, do not predict cardiotoxicity, and may be misleading.

  7. A novel inert crystal delivery medium for serial femtosecond crystallography

    PubMed Central

    Conrad, Chelsie E.; Basu, Shibom; James, Daniel; Wang, Dingjie; Schaffer, Alexander; Roy-Chowdhury, Shatabdi; Zatsepin, Nadia A.; Aquila, Andrew; Coe, Jesse; Gati, Cornelius; Hunter, Mark S.; Koglin, Jason E.; Kupitz, Christopher; Nelson, Garrett; Subramanian, Ganesh; White, Thomas A.; Zhao, Yun; Zook, James; Boutet, Sébastien; Cherezov, Vadim; Spence, John C. H.; Fromme, Raimund; Weierstall, Uwe; Fromme, Petra

    2015-01-01

    Serial femtosecond crystallography (SFX) has opened a new era in crystallo­graphy by permitting nearly damage-free, room-temperature structure determination of challenging proteins such as membrane proteins. In SFX, femtosecond X-ray free-electron laser pulses produce diffraction snapshots from nanocrystals and microcrystals delivered in a liquid jet, which leads to high protein consumption. A slow-moving stream of agarose has been developed as a new crystal delivery medium for SFX. It has low background scattering, is compatible with both soluble and membrane proteins, and can deliver the protein crystals at a wide range of temperatures down to 4°C. Using this crystal-laden agarose stream, the structure of a multi-subunit complex, phycocyanin, was solved to 2.5?Å resolution using 300?µg of microcrystals embedded into the agarose medium post-crystallization. The agarose delivery method reduces protein consumption by at least 100-fold and has the potential to be used for a diverse population of proteins, including membrane protein complexes.

  8. Membrane redistributions through multi-intercellular exchanges and serial trogocytosis.

    PubMed

    Alegre, Estibaliz; Howangyin, Kiave-Yune; Favier, Benoit; Baudhuin, Jeremy; Lesport, Emilie; Daouya, Marina; Gonzalez, Alvaro; Carosella, Edgardo D; Lemaoult, Joel

    2010-11-01

    Trogocytosis is a rapid transfer between cells of membranes and associated proteins. Trogocytic exchanges have been investigated between different cell types, mainly in two-cell systems, involving one donor and one acceptor cell type. Here, we studied trogocytosis in a more complex system, involving not only several immune cell subsets but also multiple tumor cells. We show that CD4(+) T cells, CD8(+) T cells and monocytes can acquire membrane patches and the intact proteins they contain from different tumor cells by multiple simultaneous trogocytoses. The trogocytic capabilities of CD4(+) and CD8(+) T cells were found to be similar, but inferior to that of autologous monocytes. Activated peripheral-blood mononuclear cells (PBMCs) may also exchange membranes between themselves in an all-autologous system. For this reason, monocytes are capable of acquiring membranes from multiple tumor cell sources, and transfer them again to autologous T cells, along with some of their own membranes (serial trogocytosis). Our data illustrate the extent of membrane exchanges between autologous activated immune effector cells and their environment, and how the cellular content of the local environment, including "bystander" cells, may impact the functions of immune effector cells. PMID:20877312

  9. A serial study of normal facial asymmetry in monozygotic twins.

    PubMed

    Burke, P H; Healy, M J

    1993-01-01

    Asymmetry of the soft tissues of the face was measured by comparing three pairs of bilateral facial parameters connecting the landmarks external canthus, tip of nose and angle of mouth. The subjects were six pairs of monozygotic twins (eight girls and four boys) in the age range 8-19 years. A clinical contour mapping technique known as short-base stereophotogrammetry provided life-size facial maps on which the parameters were measured in three dimensions. The study was based on annual serial records over an average period of 9 years for each pair, and was almost entirely longitudinal. The asymmetry in millimetres was given a positive or negative sign, depending on whether right or left side dominated. Asymmetry in the facial parameters was found to be very small, amounting at most to a few millimetres, and was not much larger than the measuring error of the method. Nevertheless, asymmetry was statistically significant (p < 0.05) in 12 out of 60 indicators, and of these seven were at p < 0.01 level. Asymmetry could not be related to twin zygosity, adolescence or age. PMID:8257078

  10. 40 CFR 1065.546 - Validation of minimum dilution ratio for PM batch sampling.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... false Validation of minimum dilution ratio for PM batch sampling. 1065.546 ...546 Validation of minimum dilution ratio for PM batch sampling. Use continuous...cycles to validate the minimum dilution ratios for PM batch sampling as specified...

  11. Identification of air pollutant sampling period using horizontal dilution potential.

    PubMed

    George, K V; Verma, P; Devotta, S

    2009-04-01

    A new model is proposed for estimating horizontal dilution potential of an area using wind data. The mean wind speed and wind direction variation are used as a measure of linear and angular spread of pollutant in the atmosphere. The methodology is applied to monitored hourly wind data for each month of 1 year for wind data collected at Vadodara, Gujarat and monthly dilution potential is estimated. It is found that there is a gradual variation of horizontal dilution potential over a year with limited dilution during post monsoon period i.e., October and November and a high dilution in pre monsoon period i.e., May and June. This information can be used to design air quality sampling network and duration of sampling for source apportionment study. Air pollutant sampling during high dilution period can be carried out for identifying urban and rural dust and wind blown dust from mining activity. Air pollutant sampling during low dilution period can be carried out for capturing large amount of particulate matter from anthropogenic sources like elevated stack of furnace. PMID:18398689

  12. Enhanced electrohydrodynamic collapse of DNA due to dilute polymers

    PubMed Central

    Benjamin Renner, C.; Du, Ning; Doyle, Patrick S.

    2014-01-01

    We experimentally demonstrate that addition of small, charge-neutral polymers to a buffer solution can promote compression of dilute solutions of single electrophoresing DNA. This phenomenon contrasts with the observed extension of DNA during capillary electrophoresis in dilute solutions of high molecular weight polymers. We propose these discrepancies in micron-scale DNA configurations arise from different nano-scale DNA-polymer collision events, controlled by solute polymer properties. We build upon theories previously proposed for intermolecular DNA aggregation in polymer-free solutions to develop scaling theories that describe trends seen in our data for intramolecular DNA compaction in dilute polymer solutions. PMID:24926388

  13. Effect of fractons on the exciton dynamics in dilute magnets

    NASA Astrophysics Data System (ADS)

    Wang, Xiao-Bing; Tian, De-Cheng; Jiang, Qing; Zhang, Zhe-Hua

    1995-02-01

    The effect of fractons on the exciton dynamics in dilute magnets is investigated theoretically. It is predicted that the total intensity of the hot exciton-fracton absorption band varies with temperature as Td¯+2d¯/D, where d¯ is the fracton dimension and D the fractal dimension. Also, the fracton-exciton interaction results in a quadratic temperature dependence of the exciton intersublattice relaxation rate in dilute antiferromagnets, substantially different from that (cubic temperature dependence) of magnon-exciton scattering. Implication of the results for experimental study of the magnon-fracton crossover in dilute magnets is demonstrated.

  14. Capillary electrophoresis of RNA in dilute and semidilute polymer solutions.

    PubMed

    Todorov, T I; de Carmejane, O; Walter, N G; Morris, M D

    2001-08-01

    We report separations of RNA molecules (281-6583 nucleotides) by capillary electrophoresis in dilute and semidilute solutions of aqueous hydroxyethylcellulose (HEC) ether in varying buffers. RNA mobility and peak band widths are examined under both nondenaturing and also denaturing conditions. From studies of sieving polymer concentration and chain length, it is found that good separations can be obtained in semidilute solutions as well as in dilute solutions. The dependence of RNA mobility on its chain length is consistent with separation by a similar to transient entanglement mechanism in dilute solutions. In semidilute entangled solutions the separation proceeds by segmental motion. PMID:11519948

  15. Serial Concatenated Trellis Coded Modulation with Iterative Decoding: Design and Performance

    NASA Technical Reports Server (NTRS)

    Benedetto, S.; Divsalar, D.; Montorsi, G.; Pollara, F.

    1997-01-01

    In this paper, we propose a novel method to design serial concatenation of an outer convolutional code with an inner trellis code with multi-level amplitude/phase modulations and a suitable bit-by-bit iterative decoding structure.

  16. Looking for long-term mnemonic effects on serial recall: the legacy of Simonides.

    PubMed

    Wang, A Y; Thomas, M H

    2000-01-01

    We investigated three issues with respect to the long-term serial recall of adults. First, retention interval was manipulated to obtain uncontaminated measures of long-term serial recall. Second, we compared serial recall of concrete and abstract nouns to determine how these materials might interact with various learning strategies over time. Third, control group participants were asked to describe the learning strategies used, allowing a comparison of technical mnemonic techniques with the spontaneously generated strategies of adults. We found that the delayed recall performance of participants who spontaneously used organizational or imagery-based strategies was comparable to that of those instructed in the method of loci and pegword technique. Word concreteness did not interact with any other variable. These results are discussed with regard to their implications for serial learning in educational settings. PMID:10997231

  17. On-die signal integrity monitoring of gigabit serial I/Os

    E-print Network

    Moore, Alexander Wyatt

    2006-01-01

    This thesis describes an embedded undersampling system for capturing analog wave-forms and monitoring signal integrity throughout a signal path. It is intended for use in Gigabit serial products, such as crosspoints and ...

  18. Genes Differentially Expressed by Aspergillus flavus Strains After Loss of Aflatoxin Production by Serial Transfers

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Aflatoxins are carcinogenic fungal secondary metabolites produced by Aspergillus flavus and other closely related species. To better understand the molecular events that are associated with aflatoxin production, three separate nonaflatoxigenic A. flavus strains were produced through serial transfer...

  19. A serially concatenated BCH-Turbo code scheme over an Additive White Gaussion Noise channel 

    E-print Network

    Ovalekar, Sameer V.

    1997-01-01

    This work deals with the implementation of a serially concatenated BCH-turbo code scheme for faster decoding over an Additive White Gaussian Noise (AWGN) channel. Turbo codes, first presented in 1993, represent the most innovative and breakthrough...

  20. Encoding serial data for energy-delay-product and energy minimization 

    E-print Network

    Ekambavanan, Sasidharan

    2009-05-15

    Serial or parallel buses are widely used to communicate information in most electronic devices. The energy consumed by bus interconnects may comprise a signi?cant portion of the overall energy consumption of the device. ...

  1. On-Line Serials Control System in a Large Biomedical Library: (1) Description of the System

    ERIC Educational Resources Information Center

    Fayollat, James

    1972-01-01

    An on-line serials control system with particular emphasis on storage and maintenance concepts is described. The system allows real-time display and updating of all elements of the file. (6 references) (Author)

  2. Herative Decoding of Serially Concatenated Codes with Interleavers and Comparison with Turbo Codes

    NASA Technical Reports Server (NTRS)

    Benedetto, S.; Montorsi, G.; Divsalar, D.; Pollara, F.

    1997-01-01

    A serially concatenated code with interleaver consists of the cascade of an outer encoder, an interleaver permuting the outer codewords bits, and an inner encoder whose input words are the permuted outer codewords.

  3. Serial correlation and heterogeneous volatility in financial markets: beyond the LeBaron effect

    E-print Network

    Bianco, Simone; Reno', Roberto

    2008-01-01

    We study the relation between serial correlation of financial returns and volatility at intraday level for the S&P500 stock index. At daily and weekly level, serial correlation and volatility are known to be negatively correlated (LeBaron effect). While confirming that the LeBaron effect holds also at intraday level, we go beyond it and, complementing the efficient market hyphotesis (for returns) with the heterogenous market hyphotesis (for volatility), we test the impact of unexpected volatility, defined as the part of volatility which cannot be forecasted, on the presence of serial correlations in the time series. We show that unexpected volatility is instead positively correlated with intraday serial correlation.

  4. Retroviral sequences located within an intron of the dilute gene alter dilute expression in a tissue-specific manner.

    PubMed

    Seperack, P K; Mercer, J A; Strobel, M C; Copeland, N G; Jenkins, N A

    1995-05-15

    The murine dilute coat color locus encodes an unconventional myosin heavy chain that is thought to be required for the elaboration or maintenance of dendrites or organelle transport in melanocytes and neurons. In previous studies we showed that the d mutation carried by many inbred strains of mice (now referred to as dilute viral, dv), is caused by the integration of an ecotropic murine leukemia virus (Emv-3) into the dilute gene and that phenotypic revertants of dv (termed d+) result from viral excision; a solo viral long terminal repeat (LTR) is all that remains in revertant DNA. In the studies described here we show that Emv-3 sequences are located within an intron of the dilute gene in a region of the C-terminal tail that is differentially spliced. We also show that these Emv-3 sequences result in the production of shortened and abnormally spliced dilute transcripts and that the level of this effect varies among tissues. This tissue-specific effect on dilute expression likely accounts for the absence of neurological abnormalities observed in dv mice. Surprisingly, we also found that the solo viral LTR present in revertant d+ DNA produces a tissue-specific effect on dilute expression, although this effect is less dramatic than with the full-length provirus and produces no obvious mutant phenotype. These findings have important implications for understanding the effects of viral sequences on mammalian gene expression. PMID:7774591

  5. Ionic liquids behave as dilute electrolyte solutions

    PubMed Central

    Gebbie, Matthew A.; Valtiner, Markus; Banquy, Xavier; Fox, Eric T.; Henderson, Wesley A.; Israelachvili, Jacob N.

    2013-01-01

    We combine direct surface force measurements with thermodynamic arguments to demonstrate that pure ionic liquids are expected to behave as dilute weak electrolyte solutions, with typical effective dissociated ion concentrations of less than 0.1% at room temperature. We performed equilibrium force–distance measurements across the common ionic liquid 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ([C4mim][NTf2]) using a surface forces apparatus with in situ electrochemical control and quantitatively modeled these measurements using the van der Waals and electrostatic double-layer forces of the Derjaguin–Landau–Verwey–Overbeek theory with an additive repulsive steric (entropic) ion–surface binding force. Our results indicate that ionic liquids screen charged surfaces through the formation of both bound (Stern) and diffuse electric double layers, where the diffuse double layer is comprised of effectively dissociated ionic liquid ions. Additionally, we used the energetics of thermally dissociating ions in a dielectric medium to quantitatively predict the equilibrium for the effective dissociation reaction of [C4mim][NTf2] ions, in excellent agreement with the measured Debye length. Our results clearly demonstrate that, outside of the bound double layer, most of the ions in [C4mim][NTf2] are not effectively dissociated and thus do not contribute to electrostatic screening. We also provide a general, molecular-scale framework for designing ionic liquids with significantly increased dissociated charge densities via judiciously balancing ion pair interactions with bulk dielectric properties. Our results clear up several inconsistencies that have hampered scientific progress in this important area and guide the rational design of unique, high–free-ion density ionic liquids and ionic liquid blends. PMID:23716690

  6. Ionic liquids behave as dilute electrolyte solutions.

    PubMed

    Gebbie, Matthew A; Valtiner, Markus; Banquy, Xavier; Fox, Eric T; Henderson, Wesley A; Israelachvili, Jacob N

    2013-06-11

    We combine direct surface force measurements with thermodynamic arguments to demonstrate that pure ionic liquids are expected to behave as dilute weak electrolyte solutions, with typical effective dissociated ion concentrations of less than 0.1% at room temperature. We performed equilibrium force-distance measurements across the common ionic liquid 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ([C4mim][NTf2]) using a surface forces apparatus with in situ electrochemical control and quantitatively modeled these measurements using the van der Waals and electrostatic double-layer forces of the Derjaguin-Landau-Verwey-Overbeek theory with an additive repulsive steric (entropic) ion-surface binding force. Our results indicate that ionic liquids screen charged surfaces through the formation of both bound (Stern) and diffuse electric double layers, where the diffuse double layer is comprised of effectively dissociated ionic liquid ions. Additionally, we used the energetics of thermally dissociating ions in a dielectric medium to quantitatively predict the equilibrium for the effective dissociation reaction of [C4mim][NTf2] ions, in excellent agreement with the measured Debye length. Our results clearly demonstrate that, outside of the bound double layer, most of the ions in [C4mim][NTf2] are not effectively dissociated and thus do not contribute to electrostatic screening. We also provide a general, molecular-scale framework for designing ionic liquids with significantly increased dissociated charge densities via judiciously balancing ion pair interactions with bulk dielectric properties. Our results clear up several inconsistencies that have hampered scientific progress in this important area and guide the rational design of unique, high-free-ion density ionic liquids and ionic liquid blends. PMID:23716690

  7. Bacterial survival in a dilute environment.

    PubMed Central

    Sjogren, R E; Gibson, M J

    1981-01-01

    Bacteria were isolated from lake water, and their ability to remain viable in a dilute, nutrient-deficient environment was tested by a method that permits suspension of test bacteria between two appressed microporous membranes in an aqueous environment. This approach permitted separation of the lake isolates into two categories. Members of the tribe Klebsielleae were shown to have a prolonged survival rate of 40% or better after 24 h, whereas nonsurvivors were not viable for much longer than 24 h. These nonsurvivors belonged to the genera Acinetobacter, Aeromonas, Alcaligenes, Erwinia, Escherichia, Flavobacterium, and Pseudomonas. Differences in ribonuclease and adenosine triphosphatase levels between Escherichia coli (nonsurvivor) and Klebsiella (survivor) cells were detected. At pH 7.5, stressed E. coli cells contained 14% of the adenosine triphosphatase activity detected in the control, whereas at pH 5.5, in the presence of calcium ions, these same cells contained 50% of the control adenosine triphosphatase levels. At pH 7.2, E. coli cells were strongly inhibited by an adenosine triphosphatase inhibitor, bathophenanthroline (88%); oligomycin (64%); and the proton ionophore carbonyl- cyanide-m-chlorophenyl hydrazone (67%). Both sodium azide and valinomycin were only moderately inhibitory (15 and 28%, respectively). Although the ability to scavenge internal endogenous reserves seems important, we postulate that certain enteric bacteria are capable of utilizing acidic conditions (pH 5.5) as an electrochemical gradient to generate necessary high-energy intermediates for prolongation of survival beyond that possible in environments of near-neutraL pH. PMID:6454390

  8. Adaptive network-on-chip with wave-front train serialization scheme

    Microsoft Academic Search

    Se-Joong Lee; Kwanho Kim; Hyejung Kim; Namjun Cho; Hoi-Jun Yoo

    2005-01-01

    An adaptive network-on-chip (NoC) is implemented with self-calibration and dynamic bandwidth control. The chip calibrates skew between clock domains automatically for reliable mesochronous communication. Link bandwidth is controlled adaptively according to network traffic for energy-efficient packet transmission. A new on-chip serialization scheme, wave-front train (WAFT), is used in the NoC chip to realize high-performance serial link with minimum overhead. The

  9. Evolution of double-dwell serial search acquisition with automatic threshold control 

    E-print Network

    Jung, Sung-Hyun

    1998-01-01

    Major Subject: Electrical Engineering ABSTRACT Evolution of Double Dwell Serial Search Acquisition with Automatic Threshold Control. (August 1998) Sung-hyun Jung, B. E. , Hong-Ik University, Korea Chair of Advisory Committee: Dr. Costas N...EVOLUTION OF DOUBLE-DWELL SERIAL SEARCH ACQUISITION WITH AUTOMATIC THRESHOLD CONTROL A Thesis by SUNG-HYUN JUNG Submitted to the Office of Graduate Studies of Texas ALM University in partial fulfillment of the requirements for the degree...

  10. Assessment of reliability of a code of optical rotary encoders with the serial interface

    NASA Astrophysics Data System (ADS)

    Filatov, Yu. V.; Nikolaev, M. S.; Pavlov, Petr A.

    2014-10-01

    Now more and more digital optical rotary encoders with a serial output code are widely adopted. In this regard there is a need of an assessment of precision characteristics of such converters. As means of calibration and checking of such sensors the dynamic laser goniometer with the ring laser as a reference angular sensor is used. In the report the technique of an estimation of precision characteristics of angular optical encoders with a serial output code is considered.

  11. Serum-free Media for Culturing and Serial-Passaging of Adult Human Retinal Pigment Epithelium

    Microsoft Academic Search

    TONGALP H. TEZEL; LUCIAN V. DEL PRIORE

    1998-01-01

    The ability of a chemically-defined serum-free culture medium to support the attachment, growth and serial passaging of primary adult human retinal pigment epithelial (RPE) cells was studied. Primary cultures of adult human RPE were established in a chemically-defined serum-free culture medium on both bare or bovine corneal endothelial extracellular matrix-coated tissue-culture plastic. Confluent cells were serially passaged in chemically-defined serum-free

  12. Design of Serial\\/Parallel Communication Interface of Digital Potentiometer with PC

    Microsoft Academic Search

    Zhou Wanzhen; Sha Zhanyou; Meng Zhiyong; Xu Yunfeng

    2007-01-01

    RS-232 serial port of the PC and I2C bus digital potentiometer serial communication can be realized by single-chip microcomputer, PIC16F62 made by Microchip Company and RS-232 voltage converter as the hardware circuitry, its excellence, high run speed, high transmission speed (120 kbps), low power, small bulk, low work voltage, high drive ability etc. Introduced hardware verifies and debugs method. There

  13. Word length and age influences on forward and backward immediate serial recall

    Microsoft Academic Search

    Rosemary Baker; Gerald Tehan; Hannah Tehan

    The present research is aimed at understanding the processes involved in short-term memory and how they interact with age.\\u000a Specifically, word length effects were examined under forward serial recall, backward serial recall, and item recognition\\u000a tasks, with performance being interpreted within an item-order theoretical framework. The interaction of age, word length,\\u000a and direction of recall was examined in two experiments,

  14. Emulating the GLink Chip Set With FPGA Serial Transceivers in the ATLAS Level1 Muon Trigger

    Microsoft Academic Search

    Alberto Aloisio; Francesco Cevenini; Raffaele Giordano; Vincenzo Izzo

    2010-01-01

    Many high energy physics experiments based their serial links on the Agilent HDMP-1032\\/34A serializer\\/deserializer chip-set (or GLink). This success was mainly due to the fact that this pair of chips was able to transfer data at ~ 1 Gb\\/s with a deterministic latency, fixed after each power up or reset of the link. Despite this unique timing feature, Agilent discontinued

  15. An Empirical Test of Holmes and Holmes’s Serial Murder Typology

    Microsoft Academic Search

    David V. Canter; Natalia Wentink

    2004-01-01

    This article presents the results of an empirical test of Holmes and Holmes’s serial murder classification scheme. Crime scene evidence from 100 U.S. serial murders, each the third in a distinct series, was content analyzed. The co-occurrence of content categories derived from the crime scene material was submitted to smallest space analysis. The features characteristic of the category of “power

  16. Gastrointestinal Bleeding as a Complication of Serial Transverse Enteroplasty

    PubMed Central

    Fisher, Jeremy G.; Stamm, Danielle A.; Modi, Biren P.; Duggan, Christopher; Jaksic, Tom

    2015-01-01

    Purpose Serial transverse enteroplasty (STEP) lengthens and tapers bowel in patients with intestinal failure and has a generally low complication profile. Evaluation and treatment of serious gastrointestinal bleeding (GIB) in three STEP patients is described. Methods Records of patients participating in an interdisciplinary intestinal rehabilitation program were reviewed to identify those who underwent STEP and had GIB necessitating red blood cell transfusion. Results Of 296 patients, 23 underwent STEP and 3 (13%) had subsequent GIB requiring transfusion. Underlying diagnoses were multiple atresias/intrauterine volvulus, gastroschisis, and gastroschisis with volvulus. STEP was performed at ages ranging from 3–5 months, using 3–8 stapler firings with an increase in mean bowel length from 23 to 45 cm. GIB was noted at 10–33 months post-op and resulted in 2–7 transfusions per patient over a period of 3–16 months. Gastrointestinal endoscopic evaluation demonstrated ulcers adjacent to the staple lines in two patients. Both had improvement of GIB with enteral antibiotics, sulfasalazine, topical enteral steroids and, ultimately, a period of bowel rest. The third patient had histological evidence of eosinophilic enteritis and was treated sequentially with antibiotics, sulfasalazine, enteral steroids, and an elemental diet. In all three, hemoglobin levels improved despite persistent occult bleeding. Conclusions Significant GIB is a potential late complication of STEP. Endoscopy identified the underlying source of GIB in all three patients. A combination of enteral antibiotics, anti-inflammatory medications, and bowel rest was effective in the treatment of post-STEP GIB, without the need for additional bowel resection. PMID:24851761

  17. Room-temperature macromolecular serial crystallography using synchrotron radiation

    PubMed Central

    Stellato, Francesco; Oberthür, Dominik; Liang, Mengning; Bean, Richard; Gati, Cornelius; Yefanov, Oleksandr; Barty, Anton; Burkhardt, Anja; Fischer, Pontus; Galli, Lorenzo; Kirian, Richard A.; Meyer, Jan; Panneerselvam, Saravanan; Yoon, Chun Hong; Chervinskii, Fedor; Speller, Emily; White, Thomas A.; Betzel, Christian; Meents, Alke; Chapman, Henry N.

    2014-01-01

    A new approach for collecting data from many hundreds of thousands of microcrystals using X-ray pulses from a free-electron laser has recently been developed. Referred to as serial crystallography, diffraction patterns are recorded at a constant rate as a suspension of protein crystals flows across the path of an X-ray beam. Events that by chance contain single-crystal diffraction patterns are retained, then indexed and merged to form a three-dimensional set of reflection intensities for structure determination. This approach relies upon several innovations: an intense X-ray beam; a fast detector system; a means to rapidly flow a suspension of crystals across the X-ray beam; and the computational infrastructure to process the large volume of data. Originally conceived for radiation-damage-free measurements with ultrafast X-ray pulses, the same methods can be employed with synchrotron radiation. As in powder diffraction, the averaging of thousands of observations per Bragg peak may improve the ratio of signal to noise of low-dose exposures. Here, it is shown that this paradigm can be implemented for room-temperature data collection using synchrotron radiation and exposure times of less than 3?ms. Using lysozyme microcrystals as a model system, over 40?000 single-crystal diffraction patterns were obtained and merged to produce a structural model that could be refined to 2.1?Å resolution. The resulting electron density is in excellent agreement with that obtained using standard X-ray data collection techniques. With further improvements the method is well suited for even shorter exposures at future and upgraded synchrotron radiation facilities that may deliver beams with 1000 times higher brightness than they currently produce. PMID:25075341

  18. Automated stitching of microtubule centerlines across serial electron tomograms.

    PubMed

    Weber, Britta; Tranfield, Erin M; Höög, Johanna L; Baum, Daniel; Antony, Claude; Hyman, Tony; Verbavatz, Jean-Marc; Prohaska, Steffen

    2014-01-01

    Tracing microtubule centerlines in serial section electron tomography requires microtubules to be stitched across sections, that is lines from different sections need to be aligned, endpoints need to be matched at section boundaries to establish a correspondence between neighboring sections, and corresponding lines need to be connected across multiple sections. We present computational methods for these tasks: 1) An initial alignment is computed using a distance compatibility graph. 2) A fine alignment is then computed with a probabilistic variant of the iterative closest points algorithm, which we extended to handle the orientation of lines by introducing a periodic random variable to the probabilistic formulation. 3) Endpoint correspondence is established by formulating a matching problem in terms of a Markov random field and computing the best matching with belief propagation. Belief propagation is not generally guaranteed to converge to a minimum. We show how convergence can be achieved, nonetheless, with minimal manual input. In addition to stitching microtubule centerlines, the correspondence is also applied to transform and merge the electron tomograms. We applied the proposed methods to samples from the mitotic spindle in C. elegans, the meiotic spindle in X. laevis, and sub-pellicular microtubule arrays in T. brucei. The methods were able to stitch microtubules across section boundaries in good agreement with experts' opinions for the spindle samples. Results, however, were not satisfactory for the microtubule arrays. For certain experiments, such as an analysis of the spindle, the proposed methods can replace manual expert tracing and thus enable the analysis of microtubules over long distances with reasonable manual effort. PMID:25438148

  19. Cancer therapy and cardiotoxicity: the need of serial Doppler echocardiography.

    PubMed

    Galderisi, Maurizio; Marra, Francesco; Esposito, Roberta; Lomoriello, Vincenzo Schiano; Pardo, Moira; de Divitiis, Oreste

    2007-01-01

    Cancer therapy has shown terrific progress leading to important reduction of morbidity and mortality of several kinds of cancer. The therapeutic management of oncologic patients includes combinations of drugs, radiation therapy and surgery. Many of these therapies produce adverse cardiovascular complications which may negatively affect both the quality of life and the prognosis. For several years the most common noninvasive method of monitoring cardiotoxicity has been represented by radionuclide ventriculography while other tests as effort EKG and stress myocardial perfusion imaging may detect ischemic complications, and 24-hour Holter monitoring unmask suspected arrhythmias. Also biomarkers such as troponine I and T and B-type natriuretic peptide may be useful for early detection of cardiotoxicity. Today, the widely used non-invasive method of monitoring cardiotoxicity of cancer therapy is, however, represented by Doppler-echocardiography which allows to identify the main forms of cardiac complications of cancer therapy: left ventricular (systolic and diastolic) dysfunction, valve heart disease, pericarditis and pericardial effusion, carotid artery lesions. Advanced ultrasound tools, as Integrated Backscatter and Tissue Doppler, but also simple ultrasound detection of "lung comet" on the anterior and lateral chest can be helpful for early, subclinical diagnosis of cardiac involvement. Serial Doppler echocardiographic evaluation has to be encouraged in the oncologic patients, before, during and even late after therapy completion. This is crucial when using anthracyclines, which have early but, most importantly, late, cumulative cardiac toxicity. The echocardiographic monitoring appears even indispensable after radiation therapy, whose detrimental effects may appear several years after the end of irradiation. PMID:17254324

  20. Cancer therapy and cardiotoxicity: The need of serial Doppler echocardiography

    PubMed Central

    Galderisi, Maurizio; Marra, Francesco; Esposito, Roberta; Lomoriello, Vincenzo Schiano; Pardo, Moira; de Divitiis, Oreste

    2007-01-01

    Cancer therapy has shown terrific progress leading to important reduction of morbidity and mortality of several kinds of cancer. The therapeutic management of oncologic patients includes combinations of drugs, radiation therapy and surgery. Many of these therapies produce adverse cardiovascular complications which may negatively affect both the quality of life and the prognosis. For several years the most common noninvasive method of monitoring cardiotoxicity has been represented by radionuclide ventriculography while other tests as effort EKG and stress myocardial perfusion imaging may detect ischemic complications, and 24-hour Holter monitoring unmask suspected arrhythmias. Also biomarkers such as troponine I and T and B-type natriuretic peptide may be useful for early detection of cardiotoxicity. Today, the widely used non-invasive method of monitoring cardiotoxicity of cancer therapy is, however, represented by Doppler-echocardiography which allows to identify the main forms of cardiac complications of cancer therapy: left ventricular (systolic and diastolic) dysfunction, valve heart disease, pericarditis and pericardial effusion, carotid artery lesions. Advanced ultrasound tools, as Integrated Backscatter and Tissue Doppler, but also simple ultrasound detection of "lung comet" on the anterior and lateral chest can be helpful for early, subclinical diagnosis of cardiac involvement. Serial Doppler echocardiographic evaluation has to be encouraged in the oncologic patients, before, during and even late after therapy completion. This is crucial when using anthracyclines, which have early but, most importantly, late, cumulative cardiac toxicity. The echocardiographic monitoring appears even indispensable after radiation therapy, whose detrimental effects may appear several years after the end of irradiation. PMID:17254324

  1. Keeping an eye on serial order: Ocular movements bind space and time.

    PubMed

    Rinaldi, Luca; Brugger, Peter; Bockisch, Christopher J; Bertolini, Giovanni; Girelli, Luisa

    2015-09-01

    The present study examined whether traveling through serially-ordered verbal memories exploits overt visuospatial attentional resources. In a three-phase behavioral study, five single-digits were presented sequentially at one spatial location in phase 1, while recognition and verbal recall were tested in phases 2 and 3, respectively. Participants' spontaneous eye movements were registered along with the verbal responses. Results showed that the search and the retrieval of serially-ordered information were mediated by spontaneous ocular movements. Specifically, recognizing middle items of the memorized sequence required longer inspection times and, importantly, a greater involvement of overt attentional resources, than recognizing the serially first-presented item and, to a lesser extent, the last-presented item. Moreover, serial order was found to be spatially encoded from left-to-right, as eye position during vocal responses deviated the more to the right, the later the serial position of the retrieved item in the sequence. These findings suggest that overt spatial attention mediates the scanning of serial order representation. PMID:26068084

  2. Frequency of serial sexual homicide victimization in Virginia for a ten-year period.

    PubMed

    McNamara, James J; Morton, Robert J

    2004-05-01

    The frequency of serial sexual murder has been widely discussed, and estimates of the number of victims in the United States range from 500 to 6000 per year. This study attempted to quantify the number of serial sexual murder victims in Virginia for a ten-year period. Multiple sources of data were utilized, including Federal Bureau of Investigation (FBI) case files, FBI's Violent Criminal Apprehension Program (ViCAP) reports, Virginia State Police ViCAP reports, Virginia Homicide Investigators Association, and the Virginia Division of Forensic Science DNA database, to effectively cull out all the known serial sexual murder victims for the given time period. Review of these records revealed a total of 28 victims of serial sexual murder, compared with a total of 5183 murder victims for the same ten-year period. The frequency of serial sexual victimization was 0.5% of all homicides for the given period. These results highlight the unusual frequency of serial sexual murder. PMID:15171171

  3. Dilution Exponent in the Dynamic Dilution Theory of Star and Linear Polymer Melts

    NASA Astrophysics Data System (ADS)

    Park, Seung Joon; Larson, Ronald G.

    2002-03-01

    The dynamic dilution concept has been widely used to explain constraint release in the relaxation of polymer melts (Milner and McLeish, 1997). The idea that an entanglement can be thought of as an interaction of two chains implies that the dilution exponent (alpha) is 1, but Colby and Rubinstein (1990) obtained alpha=4/3 using a scaling argument. Although these two values have been used for predicting the linear viscoelastic properties of numerous polymers, the alpha values have not been tested thoroughly using a consistent set of values for the entanglement spacing Me, equilibration time tau_e, and plateau modulus Gn. In this work, we compare the theoretical predictions using the Milner-McLeish theory with experimental data for linear, star, and star-linear blends of polybutadiene using both alpha=1 and 4/3 with the same value of Me, tau_e, and Gn. We find that alpha=1 gives good agreement with all data sets, while alpha=4/3 fails, especially for star-linear blends. [1] Milner, S.T. and McLeish, T.C.B., Macromolecules, 2159 (1997). [2] Colby, R.H. and Rubinstein, M., Macromolecules, 2753 (1990).

  4. Fully portable, highly flexible dilution refrigerator systems for neutron scattering

    E-print Network

    Boyer, Edmond

    775 Fully portable, highly flexible dilution refrigerator systems for neutron scattering P. A systems developed specifically for neutron scattering environ- ments. The refrigerators are completely relatively recently however, the lowest temperatures available in almost all neutron scattering laboratories

  5. Charge and magnetization inhomogeneities in diluted magnetic semiconductors

    E-print Network

    Timm, Carsten

    2006-03-01

    It is predicted that III-V diluted magnetic semiconductors can exhibit stripelike modulations of magnetization and carrier concentration. This inhomogeneity results from the strong dependence of the magnetization on the carrier concentration. Within...

  6. Article original Effet des glucocorticodes sur la capacit de dilution

    E-print Network

    Paris-Sud XI, Université de

    le rat wistar et chez la gerbille (Gerbillus campestris). Le rat excrète la totalité de la sur-corticdides. rongeur désertique / rein / excrétion hydrique / ADH / glucocorticoïde / dilution de l'urine Summary

  7. Separation processes using expulsion from dilute supercritical solutions

    DOEpatents

    Cochran, Jr., Henry D. (Oak Ridge, TN)

    1993-01-01

    A process for separating isotopes as well as other mixtures by utilizing the behavior of dilute repulsive or weakly attractive elements of the mixtures as the critical point of the solvent is approached.

  8. Translation of dilution tolerance for gasoline SI engine

    E-print Network

    Niekamp, Troy S. (Troy Steven)

    2013-01-01

    There are a variety of fuel improvement strategies being developed for spark ignition engines which use dilution. Many of these technologies use a combination of different diluents. It is impractical in optimizing these ...

  9. Separation processes using expulsion from dilute supercritical solutions

    DOEpatents

    Cochran, H.D. Jr.

    1993-04-20

    A process is described for separating isotopes as well as other mixtures by utilizing the behavior of dilute repulsive or weakly attractive elements of the mixtures as the critical point of the solvent is approached.

  10. Preservation of long range temporal correlations under extreme random dilution

    NASA Astrophysics Data System (ADS)

    Mirzayof, Dror; Ashkenazy, Yosef

    2010-12-01

    Many natural time series exhibit long range temporal correlations that may be characterized by power-law scaling exponents. However, in many cases, the time series have uneven time intervals due to, for example, missing data points, noisy data, and outliers. Here we study the effect of randomly missing data points on the power-law scaling exponents of time series that are long range temporally correlated. The Fourier transform and detrended fluctuation analysis (DFA) techniques are used for scaling exponent estimation. We find that even under extreme dilution of more than 50%, the value of the scaling exponent remains almost unaffected. Random dilution is also applied on heart interbeat interval time series. It is found that dilution of 70%-80% of the data points leads to a reduction of only 8% in the scaling exponent; it is also found that it is possible to discriminate between healthy and heart failure subjects even under extreme dilution of more than 90%.

  11. USE OF LINED PITS FOR DISPOSAL OF DILUTE PESTICIDE WASTE

    EPA Science Inventory

    Modern agricultural practices rely heavily on the use of pesticides to sustain high productivity. When pesticide containers and application equipment are rinsed after use, the contaminated water requires proper disposal. At Iowa State University in Ames, Iowa, dilute pesticide ri...

  12. Particle Size Distribution of Mainstream Cigarette Smoke Undergoing Dilution

    Microsoft Academic Search

    Pao-T. Chang; Leonard K. Peters; Yasuo Ueno

    1985-01-01

    Mainstream cigarette smoke generated using an automatic smoking machine (SEM-II) and Kentucky 2R1 reference cigarettes was analyzed for particle number concentration and size distribution. About 90% of the smoke was sampled with an Andersen Cascade Impactor after primary dilution (6-, 10-, or 18-fold). The remainder was further diluted 13,600- to 79,000-fold before analysis with an Electrical Aerosol Analyzer and Condensation

  13. The Propagation of Photons in the Dilute Ionized Gas

    E-print Network

    Yijia Zheng

    2013-05-02

    The dilute ionized gas is very popular in the Universe. Usually only the Compton interactions, the "Sunyaev-Zel'dovich" effect, were considered while photons propagated in this medium. In this paper the "soft-photon process" is considered. Due to the soft photons emitted during the propagation of a photon in the dilute ionized gas, the main photon (propagating in the original direction) will be redshifted. The formula to calculate this redshift is derived.

  14. Anatomy of symmetry energy of dilute nuclear matter

    E-print Network

    J. N. De; S. K. Samaddar; B. K. Agrawal

    2010-09-23

    The symmetry energy coefficients of dilute clusterized nuclear matter are evaluated in the $S$-matrix framework. Employing a few different definitions commonly used in the literature for uniform nuclear matter, it is seen that the different definitions lead to perceptibly different results for the symmetry coefficients for dilute nuclear matter. They are found to be higher compared to those obtained for uniform matter in the low density domain. The calculated results are in reasonable consonance with those extracted recently from experimental data.

  15. Reconfigurable microfluidic dilution for high-throughput quantitative assays.

    PubMed

    Fan, Jinzhen; Li, Baoqing; Xing, Siyuan; Pan, Tingrui

    2015-06-01

    This paper reports a reconfigurable microfluidic dilution device for high-throughput quantitative assays, which can easily produce discrete logarithmic/binary concentration profiles ranging from 1 to 100-fold dilution in parallel from a fixed sample volume (e.g., 10 ?L) without any assistance of continuous fluidic pump or robotic automation. The integrated dilution generation chip consists of switchable distribution and collection channels, metering reservoirs, reaction chambers, and pressure-activatable Laplace valves. Following the sequential loading of a sample, a diluent, and a detection reagent into their individual metering chambers, the top microfluidic layer can be reconfigured to collect the metered chemicals into the reaction chambers in parallel, where detection will be conducted. To facilitate mixing and reaction in the microchambers, two acoustic microstreaming actuation mechanisms have been investigated for easy integrability and accessibility. Furthermore, the microfluidic dilution generator has been characterized by both colorimetric and fluorescent means. A further demonstration of the generic usage of the quantitative dilution chip has utilized the commonly available bicinchoninic acid (BCA) assay to analyse the protein concentrations of human tissue extracts. In brief, the microfluidic dilution generator offers a high-throughput high-efficiency quantitative analytical alternative to conventional quantitative assay platforms, by simple manipulation of a minute amount of chemicals in a compact microfluidic device with minimal equipment requirement, which can serve as a facile tool for biochemical and biological analyses in regular laboratories, point-of-care settings and low-resource environments. PMID:25994379

  16. Fate of phosphorus in diluted urine with tap water.

    PubMed

    Liu, Xiaoning; Wen, Guoqi; Wang, Huihui; Zhu, Xiaoqi; Hu, Zhengyi

    2014-10-01

    P loss during the fresh urine storage process is inevitable because of the presence of Ca and Mg. Dilution is one of the most important parameters influencing urine composition and subsequent P recovery. This study aimed to investigate the fate of P in urine with different dilution ratios (Vwater/Vurine, i.e., 0/100, 25/75, 50/50 and 75/25). The results indicate that the percentage of P loss increased from 43% to 76% as the dilution ratio increased from 0/100 to 75/25 because of more Ca and Mg obtained from tap water. Meanwhile, P removal efficiency through struvite precipitation decreased from 51% to 8% because of lower supersaturation ratio as a result of dilution. Struvite crystals with high purity were still obtained even under a dilution ratio of 50/50 urine solution. Batch experiments were also performed to study the influence of temperature (15-35°C) on P recovery and crystal size. For different dilution ratios of urine solutions, no significant discrepancy for the P removal efficiencies were observed at 15 and 35°C, whereas the P removal efficiencies at 25°C showed an increasing gap with those at 15 and 35°C. The largest average crystal sizes were found at 25°C, which was opposite to the trend of P removal efficiency. PMID:25065802

  17. Dilute Oxygen Combustion Phase IV Final Report

    SciTech Connect

    Riley, M.F.

    2003-04-30

    Novel furnace designs based on Dilute Oxygen Combustion (DOC) technology were developed under subcontract by Techint Technologies, Coraopolis, PA, to fully exploit the energy and environmental capabilities of DOC technology and to provide a competitive offering for new furnace construction opportunities. Capital cost, fuel, oxygen and utility costs, NOx emissions, oxide scaling performance, and maintenance requirements were compared for five DOC-based designs and three conventional air5-fired designs using a 10-year net present value calculation. A furnace direct completely with DOC burners offers low capital cost, low fuel rate, and minimal NOx emissions. However, these benefits do not offset the cost of oxygen and a full DOC-fired furnace is projected to cost $1.30 per ton more to operate than a conventional air-fired furnace. The incremental cost of the improved NOx performance is roughly $6/lb NOx, compared with an estimated $3/lb. NOx for equ8pping a conventional furnace with selective catalytic reduction (SCCR) technology. A furnace fired with DOC burners in the heating zone and ambient temperature (cold) air-fired burners in the soak zone offers low capital cost with less oxygen consumption. However, the improvement in fuel rate is not as great as the full DOC-fired design, and the DOC-cold soak design is also projected to cost $1.30 per ton more to operate than a conventional air-fired furnace. The NOx improvement with the DOC-cold soak design is also not as great as the full DOC fired design, and the incremental cost of the improved NOx performance is nearly $9/lb NOx. These results indicate that a DOC-based furnace design will not be generally competitive with conventional technology for new furnace construction under current market conditions. Fuel prices of $7/MMBtu or oxygen prices of $23/ton are needed to make the DOC furnace economics favorable. Niche applications may exist, particularly where access to capital is limited or floor space limitations are critical. DOC technology will continue to have a highly competitive role in retrofit applications requiring increases in furnace productivity.

  18. Serial and parallel dynamic adaptation of general hybrid meshes

    NASA Astrophysics Data System (ADS)

    Kavouklis, Christos

    The Navier-Stokes equations are a standard mathematical representation of viscous fluid flow. Their numerical solution in three dimensions remains a computationally intensive and challenging task, despite recent advances in computer speed and memory. A strategy to increase accuracy of Navier-Stokes simulations, while maintaining computing resources to a minimum, is local refinement of the associated computational mesh in regions of large solution gradients and coarsening in regions where the solution does not vary appreciably. In this work we consider adaptation of general hybrid meshes for Computational Fluid Dynamics (CFD) applications. Hybrid meshes are composed of four types of elements; hexahedra, prisms, pyramids and tetrahedra, and have been proven a promising technology in accurately resolving fluid flow for complex geometries. The first part of this dissertation is concerned with the design and implementation of a serial scheme for the adaptation of general three dimensional hybrid meshes. We have defined 29 refinement types, for all four kinds of elements. The core of the present adaptation scheme is an iterative algorithm that flags mesh edges for refinement, so that the adapted mesh is conformal. Of primary importance is considered the design of a suitable dynamic data structure that facilitates refinement and coarsening operations and furthermore minimizes memory requirements. A special dynamic list is defined for mesh elements, in contrast with the usual tree structures. It contains only elements of the current adaptation step and minimal information that is utilized to reconstruct parent elements when the mesh is coarsened. In the second part of this work, a new parallel dynamic mesh adaptation and load balancing algorithm for general hybrid meshes is presented. Partitioning of a hybrid mesh reduces to partitioning of the corresponding dual graph. Communication among processors is based on the faces of the interpartition boundary. The distributed termination detection algorithm of Dijkstra is employed for (i) parallel flagging of mesh edges, (ii) global numbering of newly created nodes, and (iii) deletion of nodes after coarsening. An inexpensive dynamic load balancing strategy is employed to redistribute work load among processors after adaptation. In particular, only the initial coarse mesh, with proper weighting, is balanced, which yields savings in computation time and a simple implementation of mesh quality preservation rules, while facilitating coarsening of refined elements. Special algorithms are employed for (i) parallel flow feature detection, (ii) data migration and dynamic updates of local data structures, (iii) determination of the new interpartition boundary and (iv) determination of the communication pattern of processors after load balancing.

  19. Aroma extract dilution analysis. Precision and optimal experimental design.

    PubMed

    Ferreira, Vicente; Pet'ka, Ján; Aznar, Margarita

    2002-03-13

    The odor thresholds of 12 different compounds have been determined in an AEDA experiment using a panel composed of 8 individuals. Only in one case is the distribution of thresholds among judges significantly different from the log-normal. The cause of that departure from normality seems to be a cross adaptation rather than anosmia. The standard deviations (SD) range from 2(0.7) to 2(4.1), with 2(1.8) as average. If the AEDA is carried out at a dilution rate, R, and dilution R(P) (where P = 0, 1, 2.) is the last one at which a compound was detected by a judge, the flavor dilution (FD) factor that should be provided for that judge is R(P+0.5). In the case where several judges carry out the AEDA, the FD for a given compound should be the geometric mean of the FD provided by all the judges. The SD of the distribution of FDs is related to that of the distribution of odor thresholds, but is strongly influenced by the dilution rate, R, being higher with higher R values. The relationship between both SDs can be used to determine the expected precision (measured as the geometric length of the 95% confidence interval) of the result of an AEDA experiment as a function of the dilution rate, the number of judges, and the SD of the distribution of thresholds. Different simulations have shown that in most cases, a dilution rate of 10 is the best option, and that lower dilution rates are advantageous only if the analyzed solution contains compounds with a very narrow distribution of thresholds. PMID:11879029

  20. Full custom chip set for high speed serial communications up to 2.48 Gbit\\/s

    Microsoft Academic Search

    J. Gonzalez-Torres; P. A. Mateos; J. M. Hernandez

    1997-01-01

    A full custom chip set has been developed (within the ESPRIT III SPIBOC project) to perform high speed serial-parallel conversion on an optical link. It is composed by two complementary circuits for 8-bit parallel to serial multiplexing and serial to parallel demultiplexing (@2.5 Gbit\\/s). Each integrated circuit has four identical modules in order to optimize area on board. An aggregated

  1. System and method for simultaneously collecting serial number information from numerous identity tags

    DOEpatents

    Doty, Michael A. (Manteca, CA)

    1997-01-01

    A system and method for simultaneously collecting serial number information reports from numerous colliding coded-radio-frequency identity tags. Each tag has a unique multi-digit serial number that is stored in non-volatile RAM. A reader transmits an ASCII coded "D" character on a carrier of about 900 MHz and a power illumination field having a frequency of about 1.6 Ghz. A one MHz tone is modulated on the 1.6 Ghz carrier as a timing clock for a microprocessor in each of the identity tags. Over a thousand such tags may be in the vicinity and each is powered-up and clocked by the 1.6 Ghz power illumination field. Each identity tag looks for the "D" interrogator modulated on the 900 MHz carrier, and each uses a digit of its serial number to time a response. Clear responses received by the reader are repeated for verification. If no verification or a wrong number is received by any identity tag, it uses a second digital together with the first to time out a more extended period for response. Ultimately, the entire serial number will be used in the worst case collision environments; and since the serial numbers are defined as being unique, the final possibility will be successful because a clear time-slot channel will be available.

  2. System and method for simultaneously collecting serial number information from numerous identity tags

    DOEpatents

    Doty, M.A.

    1997-01-07

    A system and method are disclosed for simultaneously collecting serial number information reports from numerous colliding coded-radio-frequency identity tags. Each tag has a unique multi-digit serial number that is stored in non-volatile RAM. A reader transmits an ASCII coded ``D`` character on a carrier of about 900 MHz and a power illumination field having a frequency of about 1.6 Ghz. A one MHz tone is modulated on the 1.6 Ghz carrier as a timing clock for a microprocessor in each of the identity tags. Over a thousand such tags may be in the vicinity and each is powered-up and clocked by the 1.6 Ghz power illumination field. Each identity tag looks for the ``D`` interrogator modulated on the 900 MHz carrier, and each uses a digit of its serial number to time a response. Clear responses received by the reader are repeated for verification. If no verification or a wrong number is received by any identity tag, it uses a second digital together with the first to time out a more extended period for response. Ultimately, the entire serial number will be used in the worst case collision environments; and since the serial numbers are defined as being unique, the final possibility will be successful because a clear time-slot channel will be available. 5 figs.

  3. Serial list combination by monkeys (Macaca mulatta): test cues and linking.

    PubMed

    Treichler, F Robert; Raghanti, Mary Ann

    2010-01-01

    This investigation assessed prospective bases of non-human primate cognitive operations that support serial list memory. Four macaques learned 3-, 5-item ordered lists of objects (as two-choice problems) and then either did or did not (in a within-subject design) receive training on pairs that linked the three original lists into a 15-item serial order. Next, subjects experienced selective exposure trials on object pairs that either maintained or contrasted to the serial position relationships seen during original learning. Subsequent comprehensive tests assessed the interactive effects of linking and exposure conditions on choosing in accord with a combined 15-item serial order. Linking readily induced monkeys to merge lists into a 15-item order, but restricting early exposure to pairs with the same positional relationships as original training slowed, but did not prevent, list combination. Exposure to positional relationships congruent with the combined (15-item) list and different from those of original 5-item training aided both expression of the linking effect and acquisition after no link training. Thus, list linking facilitated serial reorganization by inducing release from error derived from memory for prior learned positional relationships. The task was recommended as a prospective evaluator of continuity of cognitive processes among species. PMID:19533183

  4. Serial correlation in neural spike trains: Experimental evidence, stochastic modeling, and single neuron variability

    NASA Astrophysics Data System (ADS)

    Farkhooi, Farzad; Strube-Bloss, Martin F.; Nawrot, Martin P.

    2009-02-01

    The activity of spiking neurons is frequently described by renewal point process models that assume the statistical independence and identical distribution of the intervals between action potentials. However, the assumption of independent intervals must be questioned for many different types of neurons. We review experimental studies that reported the feature of a negative serial correlation of neighboring intervals, commonly observed in neurons in the sensory periphery as well as in central neurons, notably in the mammalian cortex. In our experiments we observed the same short-lived negative serial dependence of intervals in the spontaneous activity of mushroom body extrinsic neurons in the honeybee. To model serial interval correlations of arbitrary lags, we suggest a family of autoregressive point processes. Its marginal interval distribution is described by the generalized gamma model, which includes as special cases the log-normal and gamma distributions, which have been widely used to characterize regular spiking neurons. In numeric simulations we investigated how serial correlation affects the variance of the neural spike count. We show that the experimentally confirmed negative correlation reduces single-neuron variability, as quantified by the Fano factor, by up to 50%, which favors the transmission of a rate code. We argue that the feature of a negative serial correlation is likely to be common to the class of spike-frequency-adapting neurons and that it might have been largely overlooked in extracellular single-unit recordings due to spike sorting errors.

  5. The SPi chip as an integrated power management device for serial powering of future HEP experiments

    SciTech Connect

    Trimpl, M.; Deptuch, G.; Gingu, C.; Yarema, R.; /Fermilab; Holt, R.; Weber, M.; /Rutherford; Kierstead, J.; Lynn, D.; /Brookhaven

    2009-01-01

    Serial powering is one viable and very efficient way to distribute power to future high energy physics (HEP) experiments. One promising way to realize serial powering is to have a power management device on the module level that provides the necessary voltage levels and features monitoring functionality. The SPi (Serial Powering Interface) chip is such a power manager and is designed to meet the requirements imposed by current SLHC upgrade plans. It incorporates a programmable shunt regulator, two linear regulators, current mode ADCs to monitor the current distribution on the module, over-current detection, and also provides module power-down capabilities. Compared to serially powered setups that use discrete components, the SPi offers a higher level of functionality in much less real estate and is designed to be radiation tolerant. Bump bonding techniques are used for chip on board assembly providing the most reliable connection at lowest impedance. This paper gives an overview of the SPi and outlines the main building blocks of the chip. First stand alone tests are presented showing that the chip is ready for operation in serially powered setups.

  6. Serial position effects in 2-alternative forced choice recognition: functional equivalence across visual and auditory modalities.

    PubMed

    Johnson, Andrew J; Miles, Christopher

    2009-01-01

    Two experiments examined Ward, Avons, and Melling's (2005) proposition that the serial position function is task, rather than modality, dependent. Specifically, they proposed that for backward testing the 2-alternative forced-choice (2AFC) recognition paradigm is characterised by single-item recency irrespective of the modality of the stimulus presentation. In Experiment 1 the same nonword sequences, presented both visually or auditorily, produced qualitatively equivalent serial position functions with 2AFC testing. Forward testing produced a flat serial position function, while backward testing produced two-item recency in the absence of primacy. In order to rule out the possibility that the serial position functions for visual stimuli were the product of sub-vocal rehearsal, Experiment 2 employed articulatory suppression during the presentation phase. Serial position function equivalence was again observed together with a modest impairment in overall recognition rates. Taken together, these data are consistent with the Ward et al. proposition and further support the existence of a visual memory that can facilitate storage of visual-verbal material (e.g. Logie, Della Sella, Wynn, & Baddeley, 2000). However, the observation of two-item recency contradicts the original duplex account of single-item recency traditionally observed for backwards recognition testing of visual stimuli (Phillips & Christie, 1977). PMID:19105090

  7. Effects of noise on identification and serial recall of nonsense syllables in older and younger adults.

    PubMed

    Surprenant, Aimee M

    2007-03-01

    The present experiment investigated the hypothesis that age-related declines in cognitive functioning are partly due to a decrease in peripheral sensory functioning. In particular, it was suggested that some of the decline in serial recall for verbal material might be due to even small amounts of degradation due to noise or hearing loss. Older and younger individuals identified and recalled nonsense syllables in order at a number of different speech-to-noise ratios. Performance on the identification task was significantly correlated with performance on a subsequent serial recall task. However, this was restricted to the case in which the stimuli were presented in a substantial amount of noise. These data show that even small changes in sensory processing can lead to real and measurable declines in cognitive functioning as measured by a serial recall task. PMID:17364376

  8. An application of stereoscopy and image processing in forensics: recovering obliterated firearms serial number

    NASA Astrophysics Data System (ADS)

    da Silva Nunes, L. C.; dos Santos, Paulo Acioly M.

    2004-10-01

    We present an application of the use of stereoscope to recovering obliterated firearms serial number. We investigate a promising new combined cheap method using both non-destructive and destructive techniques. With the use of a stereomicroscope coupled with a digital camera and a flexible cold light source, we can capture the image of the damaged area, and with continuous polishing and sometimes with the help of image processing techniques we could enhance the observed images and they can also be recorded as evidence. This method has already proven to be useful, in certain cases, in aluminum dotted pistol frames, whose serial number is printed with a laser, when etching techniques are not successful. We can also observe acid treated steel surfaces and enhance the images of recovered serial numbers, which sometimes lack of definition.

  9. User's guide to the intelligent serial line card (ISL-11) for LSI-11 systems (Engineering Materials)

    SciTech Connect

    Not Available

    1983-01-01

    The ISL-11 (Intelligent Serial Line) card is a quad height LSI-11 module with an on-board Intel 8039 microprocessor which supplies intelligence between a differential (RS-422) serial line and a DMA interface to the LSI-11. It is compatible with LSI-11's, LSI-11/2's, and LSI-11/23's. The fact that there is a microprocessor on-board allows the use of this module for many different applications. One application will involve networking of minicomputers using the in-house SCULL protocol. The entire SCULL protocol can be handled by the ISL-11 thus taking a significant load off the LSI-11 and simplifying the software interface to the link. The serial line is asynchronous and can be driven up to 38.4K band if the microcode can handle such speeds. A block diagram of the ISL-11 is shown on the next page.

  10. A high speed serializer ASIC for ATLAS Liquid Argon calorimeter upgrade

    E-print Network

    Liu, T; The ATLAS collaboration

    2014-01-01

    We have been developing a serializer application-specific integrated circuit (ASIC) based on a commercial 0.25-?m silicon-on-sapphire (SOS) CMOS technology for the ATLAS liquid argon calorimeter front-end electronics upgrade. The first prototype, a 5 Gbps 16:1 serializer has been designed, fabricated, and tested in lab environment and in 200 MeV proton beam. The test results indicate that the first prototype meets the design goals. The second prototype, a double-lane, 8 Gbps per lane serializer is under development. The post layout simulation indicates that 8 Gbps is achievable. In this paper we present the design and the test results of the first prototype and the design and status of the second prototype.

  11. Process of concentrating ethanol from dilute aqueous solutions thereof

    DOEpatents

    Oulman, Charles S. [Ames, IA; Chriswell, Colin D. [Slater, IA

    1981-07-07

    Relatively dilute aqueous solutions of ethanol are concentrated by passage through a bed of a crystalline silica polymorph, such as silicalite, to adsorb the ethanol with residual dilute feed in contact with the bed, which is displaced by passing concentrated aqueous ethanol through the bed without displacing the adsorbed ethanol. A product concentrate is then obtained by removing the adsorbed ethanol from the bed together with at least a portion of the concentrated aqueous ethanol used as the displacer liquid. This process permits ethanol to be concentrated from dilute fermentation beers, which may contain from 6 to 10% ethanol, to obtain a concentrate product at very low energy cost having an ethanol concentration in excess of 95%, such as a concentration of from 98 to 99.5%.

  12. Process of concentrating ethanol from dilute aqueous solutions thereof

    DOEpatents

    Oulman, C.S.; Chriswell, C.D.

    1981-07-07

    Relatively dilute aqueous solutions of ethanol are concentrated by passage through a bed of a crystalline silica polymorph, such as silicalite, to adsorb the ethanol with residual dilute feed in contact with the bed, which is displaced by passing concentrated aqueous ethanol through the bed without displacing the adsorbed ethanol. A product concentrate is then obtained by removing the adsorbed ethanol from the bed together with at least a portion of the concentrated aqueous ethanol used as the displacer liquid. This process permits ethanol to be concentrated from dilute fermentation beers, which may contain from 6 to 10% ethanol, to obtain a concentrate product at very low energy cost having an ethanol concentration in excess of 95%, such as a concentration of from 98 to 99.5%. 5 figs.

  13. Application of Cryocoolers to a Vintage Dilution Refrigerator

    SciTech Connect

    Schmitt, Richard; Smith, Gary; Ruschman, Mark; /Fermilab; Beaty, Jim; /Minnesota U.

    2011-06-06

    A dilution refrigerator is required for 50mK detector operation of CDMS (Cryogenic Dark Matter Search). Besides shielding the dilution refrigerator itself, the liquid nitrogen shield and liquid helium bath in the refrigerator cool the detector cryostat heat shields and cool electronics, resulting in significant external heat loads at 80K and at 4K. An Oxford Instruments Kelvinox 400 has served this role for ten years but required daily transfers of liquid nitrogen and liquid helium. Complicating the cryogen supply is the location 800 meters below ground in an RF shielded, class 10000 clean room at Soudan, MN. Nitrogen and helium re-liquefiers using cryocoolers were installed outside the clean room and continuously condense room temperature gas and return the liquids to the dilution refrigerator through a transfer line. This paper will describe the design, installation, controls and performance of liquefaction systems.

  14. Ferrofluid clustering driven by dilution: An alternating current susceptibility investigation

    NASA Astrophysics Data System (ADS)

    Zhong, Jing; Liu, Wenzhong; Li, Yin; Wu, Mian; Morais, Paulo Cesar

    2012-03-01

    The influence of sample dilution upon cluster disruption/formation within a ferrofluid sample is investigated by monitoring the temperature dependence of the initial AC susceptibility. The effective magnetic response of the ferrofluid sample is described by a combination of Langevin's functions modulated by the relative content of monomers and clusters. Deviations from the linearity found in the inverse susceptibility versus temperature (?-1-T) data were successfully described via the disruption of clusters into monomers within the approach of a second order phase transition at the critical temperature T*. We found T* increasing monotonically from 386 K to 412 K as the stock ferrofluid sample is diluted up to a factor of 5. In the same dilution range, we found the normalized relative content of clusters increasing from about 38% up to 42%, whereas the average effective magnetic moment of the clusters increased by a factor of 1.7.

  15. Dilution cycle control for an absorption refrigeration system

    DOEpatents

    Reimann, Robert C. (Lafayette, NY)

    1984-01-01

    A dilution cycle control system for an absorption refrigeration system is disclosed. The control system includes a time delay relay for sensing shutdown of the absorption refrigeration system and for generating a control signal only after expiration of a preselected time period measured from the sensed shutdown of the absorption refrigeration system, during which the absorption refrigeration system is not restarted. A dilution cycle for the absorption refrigeration system is initiated in response to generation of a control signal by the time delay relay. This control system is particularly suitable for use with an absorption refrigeration system which is frequently cycled on and off since the time delay provided by the control system prevents needless dilution of the absorption refrigeration system when the system is turned off for only a short period of time and then is turned back on.

  16. Gas dilution system results and application to acid rain utilities

    SciTech Connect

    Jolley-Souders, K.; Geib, R. [Matheson Gas Products, Montgomeryville, PA (United States); Dunn, C. [Environics, Inc., Tolland, CT (United States)

    1997-12-31

    In 1997, the United States EPA will remove restrictions preventing acid rain utilities from using gas dilution systems for calibration or linearity studies for continuous emissions monitoring, Test Method 205 in 40CFR51 requires that a gas dilution system must produce calibration gases whose measured values are within {+-}2% of predicted values. This paper presents the evaluation of the Environics/CalMat 2020 Dilution System for use in calibration studies. Internal studies show that concentrations generated by this unit are within {+-}0.5% of predicted values. Studies are being conducted by several acid rain utilities to evaluate the Environics/CalMat system using single minor component calibration standards. In addition, an internally generated study is being performed to demonstrate the system`s accuracy using a multi-component gas mixture. Data from these tests will be presented in the final version of the paper.

  17. Amplitude mode in diluted O(N) models

    NASA Astrophysics Data System (ADS)

    Kiselev, Yury; Arovas, Daniel

    2015-03-01

    The relativistic O(N) model has recently been shown to exhibit a robust amplitude mode peak in its scalar susceptibility which exhibits scaling in the vicinity of the quantum critical point [PRL 110, 140401 (2013)]. We report on the O(N) model with random site dilution, which we study using the worm algorithm [PRL 87, 160601 (2001)]. We present results for the scalar susceptibility and O(N) conductivity in the critical region and follow the system's behavior as the dilution tends to the percolation threshold.

  18. Fluctuating hydrodynamics for dilute granular gases: a Monte Carlo study

    E-print Network

    Giulio Costantini; Andrea Puglisi

    2010-05-22

    We investigate hydrodynamic noise in a dilute granular gas during the homogeneous cooling state, by means of a proper application of the Direct Simulation Monte Carlo (DSMC) algorithm. The DSMC includes a source of randomization which is not present in Molecular Dynamics (MD) for inelastic hard disks. Notwithstanding this difference, a fair quantitative agreement is found, including a violation of the fluctuation-dissipation relation for the noise amplitude of the same order observed in MD. This study suggests that deterministic collision dynamics is not an essential ingredient to reproduce, up to a good degree of approximation, hydrodynamic fluctuations in dilute granular gases.

  19. Structure of a photosynthetic reaction centre determined by serial femtosecond crystallography.

    PubMed

    Johansson, Linda C; Arnlund, David; Katona, Gergely; White, Thomas A; Barty, Anton; DePonte, Daniel P; Shoeman, Robert L; Wickstrand, Cecilia; Sharma, Amit; Williams, Garth J; Aquila, Andrew; Bogan, Michael J; Caleman, Carl; Davidsson, Jan; Doak, R Bruce; Frank, Matthias; Fromme, Raimund; Galli, Lorenzo; Grotjohann, Ingo; Hunter, Mark S; Kassemeyer, Stephan; Kirian, Richard A; Kupitz, Christopher; Liang, Mengning; Lomb, Lukas; Malmerberg, Erik; Martin, Andrew V; Messerschmidt, Marc; Nass, Karol; Redecke, Lars; Seibert, M Marvin; Sjöhamn, Jennie; Steinbrener, Jan; Stellato, Francesco; Wang, Dingjie; Wahlgren, Weixaio Y; Weierstall, Uwe; Westenhoff, Sebastian; Zatsepin, Nadia A; Boutet, Sébastien; Spence, John C H; Schlichting, Ilme; Chapman, Henry N; Fromme, Petra; Neutze, Richard

    2013-01-01

    Serial femtosecond crystallography is an X-ray free-electron-laser-based method with considerable potential to have an impact on challenging problems in structural biology. Here we present X-ray diffraction data recorded from microcrystals of the Blastochloris viridis photosynthetic reaction centre to 2.8 Å resolution and determine its serial femtosecond crystallography structure to 3.5 Å resolution. Although every microcrystal is exposed to a dose of 33 MGy, no signs of X-ray-induced radiation damage are visible in this integral membrane protein structure. PMID:24352554

  20. Structure of a photosynthetic reaction centre determined by serial femtosecond crystallography

    PubMed Central

    Johansson, Linda C.; Arnlund, David; Katona, Gergely; White, Thomas A.; Barty, Anton; DePonte, Daniel P.; Shoeman, Robert L.; Wickstrand, Cecilia; Sharma, Amit; Williams, Garth J.; Aquila, Andrew; Bogan, Michael J.; Caleman, Carl; Davidsson, Jan; Doak, R Bruce; Frank, Matthias; Fromme, Raimund; Galli, Lorenzo; Grotjohann, Ingo; Hunter, Mark S.; Kassemeyer, Stephan; Kirian, Richard A.; Kupitz, Christopher; Liang, Mengning; Lomb, Lukas; Malmerberg, Erik; Martin, Andrew V.; Messerschmidt, Marc; Nass, Karol; Redecke, Lars; Seibert, M Marvin; Sjöhamn, Jennie; Steinbrener, Jan; Stellato, Francesco; Wang, Dingjie; Wahlgren, Weixaio Y.; Weierstall, Uwe; Westenhoff, Sebastian; Zatsepin, Nadia A.; Boutet, Sébastien; Spence, John C.H.; Schlichting, Ilme; Chapman, Henry N.; Fromme, Petra; Neutze, Richard

    2013-01-01

    Serial femtosecond crystallography is an X-ray free-electron-laser-based method with considerable potential to have an impact on challenging problems in structural biology. Here we present X-ray diffraction data recorded from microcrystals of the Blastochloris viridis photosynthetic reaction centre to 2.8?Å resolution and determine its serial femtosecond crystallography structure to 3.5?Å resolution. Although every microcrystal is exposed to a dose of 33?MGy, no signs of X-ray-induced radiation damage are visible in this integral membrane protein structure. PMID:24352554

  1. Optimal decision criterion for detecting change in bone mineral density during serial monitoring: A Bayesian approach

    Microsoft Academic Search

    M. Sadatsafavi; A. Moayyeri; L. Wang; W. D. Leslie

    2008-01-01

    Summary  Interpretation of change in serial bone densitometry using least significant change (LSC) may not lead to optimal decision\\u000a making. Using the principles of Bayesian statistics and decision sciences, we developed the Optimal Decision Criterion (ODC) which resulted in 11–12.5% higher rate of correct classification compared with the LSC method.\\u000a \\u000a \\u000a \\u000a Introduction  The interpretation of change in serial bone densitometry emphasizes using least

  2. Application of a computer serial probe recognition (SPR) task in Rhesus Monkeys (Macaca Mulatta). Final report

    SciTech Connect

    Finger, A.V.; Kahler, D.W.

    1992-11-01

    The Serial Probe Recognition (SPR) task was established to fulfill a requirement for a nonhuman primate behavioral task as a final screening of candidate compound for the pretreatment and treatment (PT) against chemical warfare agents. Initially, equipment on hand was reconfigured to support this requirement. From this prototype, we designed and developed a behavioral testing system to study SPR memory in nonhuman primates. Our system consisted of an operant chamber, a personal computer with a monitor, a touch sensitive screen, a pellet dispenser and an interface system. In this report we describe the development and application of the behavioral testing system in our laboratory. Serial probe recognition, Behavior, Training Rhesus Monkeys, Macaca Mulatta.

  3. A serial digital data communications device. [for real time flight simulation

    NASA Technical Reports Server (NTRS)

    Fetter, J. L.

    1977-01-01

    A general purpose computer peripheral device which is used to provide a full-duplex, serial, digital data transmission link between a Xerox Sigma computer and a wide variety of external equipment, including computers, terminals, and special purpose devices is reported. The interface has an extensive set of user defined options to assist the user in establishing the necessary data links. This report describes those options and other features of the serial communications interface and its performance by discussing its application to a particular problem.

  4. The effect of meaningfulness on the shape of the serial position curve

    E-print Network

    Edwards, Mark Lee

    1970-01-01

    . Hulse, "The psychology of learning. " New York: McGraw-Hill, 1967. Witmer, L. R. The association value of three-place nonsense syllables. The Journal of Genetic Ps cholo , 1935, 47, 337-360, Young, R. K. The stimulus in serial verbal learning.... The American Journal of Ps cholo , 1961, 70, 517-528. Young, R. K. Tests of three hypotheses about the effective stimulus in serial learning. The Journal of Ex erimental Ps cholo 1962, 63, 307-313. Young, R. K. , Hakes, D, T. , & Hicks, R. Y. Effects...

  5. Bit-Error Rate Estimation for Bang-Bang Clock and Data Recovery Circuit in High-Speed Serial Links

    E-print Network

    Bit-Error Rate Estimation for Bang-Bang Clock and Data Recovery Circuit in High-Speed Serial Links incorporating a bang-bang (BB) phase detector have been widely adopted in high-speed serial links due conditions. This technique is not applicable to bang-bang (BB) CDR circuits, which have gained popularity due

  6. A Digital PWM Regulator Based on Serial-Error Correcting Mechanism for DC-DC Buck Conversion

    Microsoft Academic Search

    P. J. W. HuangandS; S. H. L. Tu

    2005-01-01

    This paper describes the design and implementation of a digital pulse-width modulation (PWM) regulator using a serial feedback error voltage to adjust the input voltage of a high frequency switching dc-dc buck converter. The digital controller comprises an error process unit (EPU), a PID compensator and a digital PWM. The employment of a serial comparator and an error process unit

  7. MinPD: Distance-based Phylogenetic Analysis and Recombination Detection of Serially-Sampled HIV Quasispecies

    E-print Network

    Narasimhan, Giri

    MinPD: Distance-based Phylogenetic Analysis and Recombination Detection of Serially-Sampled HIV or vaccines for a disease. A recent study performed a comprehensive analysis of serially-sampled HIV sequence nodes of a phylogenetic tree. Recombination may further complicate the analysis. Such relationships

  8. Disentangling Stability, Variability and Adaptability in Human Performance: Focus on the Interplay between Local Variance and Serial Correlation

    ERIC Educational Resources Information Center

    Torre, Kjerstin; Balasubramaniam, Ramesh

    2011-01-01

    We address the complex relationship between the stability, variability, and adaptability of psychological systems by decomposing the global variance of serial performance into two independent parts: the local variance (LV) and the serial correlation structure. For two time series with equal LV, the presence of persistent long-range correlations…

  9. Dilution and volatilization of groundwater contaminant discharges in streams.

    PubMed

    Aisopou, Angeliki; Bjerg, Poul L; Sonne, Anne T; Balbarini, Nicola; Rosenberg, Louise; Binning, Philip J

    2015-01-01

    An analytical solution to describe dilution and volatilization of a continuous groundwater contaminant plume into streams is developed for risk assessment. The location of groundwater plume discharge into the stream (discharge through the side versus bottom of the stream) and different distributions of the contaminant plume concentration (Gaussian, homogeneous or heterogeneous distribution) are considered. The model considering the plume discharged through the bank of the river, with a uniform concentration distribution was the most appropriate for risk assessment due to its simplicity and limited data requirements. The dilution and volatilization model is able to predict the entire concentration field, and thus the mixing zone, maximum concentration and fully mixed concentration in the stream. It can also be used to identify groundwater discharge zones from in-stream concentration measurement. The solution was successfully applied to published field data obtained in a large and a small Danish stream and provided valuable information on the risk posed by the groundwater contaminant plumes. The results provided by the dilution and volatilization model are very different to those obtained with existing point source models, with a distributed source leading to a larger mixing length and different concentration field. The dilution model can also provide recommendations for sampling locations and the size of impact zones in streams. This is of interest for regulators, for example when developing guidelines for the implementation of the European Water Framework Directive. PMID:25496819

  10. Dry dilution refrigerator with 4He-1 K-loop

    NASA Astrophysics Data System (ADS)

    Uhlig, Kurt

    2015-03-01

    In this article we summarize experimental work on cryogen-free 3He/4He dilution refrigerators which, in addition to the dilution refrigeration circuit, are equipped with a 4He-1 K-stage. This type of DR becomes worth considering when high cooling capacities are needed at T ? 1 K to cool cold amplifiers and heat sink cables. In our application, the motivation for the construction of this type of cryostat was to do experiments on superconducting quantum circuits for quantum information technology and quantum simulations. In other work, DRs with 1 K-stage were proposed for astro-physical cryostats. For neutron scattering research, a top-loading cryogen-free DR with 1 K-stage was built which was equipped with a standard commercial dilution refrigeration insert. Cooling powers of up to 100 mW have been reached with our 1 K-stage, but higher refrigeration powers were achieved with more powerful pulse tube cryocoolers and higher 4He circulation rates in the 1 K-loop. Several different versions of a 1 K-loop have been tested in combination with a dilution refrigeration circuit. The lowest temperature of our DR was 4.3 mK.

  11. FIELD AND LABORATORY EVALUATION OF A WOODSTOVE DILUTION SAMPLING SYSTEM

    EPA Science Inventory

    The paper discusses field and laboratory evaluation of a woodstove dilution sampling system. Two sampling methods have been developed and used by EPA to test emissions from woodstoves: both remove flue gas directly from the appliance chimney. The two methods have been developed t...

  12. A dilution refrigerator insert for standard ILL cryostats K. Neumaier

    E-print Network

    Paris-Sud XI, Université de

    773 A dilution refrigerator insert for standard ILL cryostats K. Neumaier WMI Garching, F.R.G. A la gamme de température des cryostats standards ILL (300-1,2 K) on a remplacé le porte- échantillon 03BCW à 0,1 K. Abstract. 2014 In order to extend the temperature range of Standard ILL cryostats (300

  13. Dilute reagent decontamination for pressurized water reactors. Final report

    Microsoft Academic Search

    R. L. Clark; A. B. Jr. Johnson

    1984-01-01

    The program has involved the following elements: screening studies with candidate reagents using nonradioactive autoclaved Inconel 600 and stainless steel specimens, procurement and characterization of radioactive Inconel 600 steam generator tube sections from operating PWRs, testing of candidate reagents on radioactive Inconel 600 tubing specimens, identification of dilute chemical decontamination methodology for PWRs, and develop decontamination reagents compatible with boric

  14. Spin flip probabilities in the 3-D diluted Ising model

    Microsoft Academic Search

    Uwe Gropengiesser

    1994-01-01

    According to Ray and Jan the cluster development in a spin glass can be described by calculating spin flip probabilities and by association of rarely flipping spins. We show that for the pure ferromagnetic Ising model the predicted Ray-Jan percolation transition temperature does not agree with the phase transition of the Ising system. Both diluted and undiluted Ising model show

  15. SEPARATION OF DILUTE HAZARDOUS ORGANICS BY LOW PRESSURE COMPOSITE MEMBRANES

    EPA Science Inventory

    The separation of dilute hazardous organics was accomplished through this project utilizing thin-film composite aromatic polyamide membranes. This technique offers advantages in terms of high solute separation at low pressures (1-2 MPa) and broad pH operating ranges (pH 2 to 12)....

  16. Removal of metal ions from dilute solutions by sorptive flotation

    Microsoft Academic Search

    A. I. Zouboulis; K. A. Matis

    1997-01-01

    The removal of soluble ionic species, such as toxic metal cations or oxyanions, from dilute aqueous solutions, as most waste waters are, was investigated in laboratory?scale experiments (batch and continuous mode) by applying the sorptive flotation process. This method involves the preliminary abstraction or scavenging of metal ions using proper “sorbents”, which exist at the fine or ultrafine particle?size range,

  17. Brood size matching: a novel perspective on predator dilution.

    PubMed

    Jaatinen, Kim; Öst, Markus

    2013-02-01

    A primary benefit of grouping is diluting the individual risk of attack by predators. However, the fact that groups are formed not always by solitary adults but also by subgroups (e.g., families) has been overlooked. The subgroup-specific benefit of predator dilution depends on its relative contribution to total group size. Therefore, the willingness of a subgroup to merge with others should increase the less it contributes to total group size, but the conflicting preferences of partners may result in the preferential merger of similar-sized subgroups. Here, we evaluate how the proportional contribution of subgroups to diluting risk affects group formation. We generate predictions using a bidding game over parental care and test them using data on common eiders (Somateria mollissima), in which females with variable-sized broods may form brood-rearing coalitions. The predictions (1) that size-matched subgroups should have a higher propensity to merge, (2) that predation should increase group formation propensity, and (3) that increased bargaining power, as proxied by female body condition, should increase the time needed to establish partnerships were all supported. Partners do negotiate over their relative contributions to predator dilution, accepting or rejecting partnerships on the basis of this criterion. Our results show that consideration of the size of subgroups before merger is critical in understanding the process of group formation under the threat of predation. PMID:23348772

  18. Infinite dilution activity coefficient measurements by inert gas stripping method

    Microsoft Academic Search

    Piia Haimi; Petri Uusi-Kyyny; Juha-Pekka Pokki; Juhani Aittamaa; Kari I. Keskinen

    2006-01-01

    The values of activity coefficients at infinite dilution (??) are of especially significance in the reliable design of thermal separation processes producing pure compounds. The ?? has been determined for six branched ethers and four sulfur compounds in water using the dilutor technique. The measurements were carried out in the temperature range from 288 to 333K.

  19. A Water-Dilutable Furan Resin Binder for Particleboard

    Microsoft Academic Search

    Robert H. Leitheiser; Ben R. Bogner; Frank C. Grant-Acquah; William E. Johns; Walter Plagemann

    1982-01-01

    A water-dilutable furan resin made from agricultural residues can be used as a binder for particleboard. Board properties obtained were comparable to those obtained with commercial phenolic binders. Board costs can be significantly reduced by using low cost ammonium lignin sulfonate as a resin extender.

  20. A new gas dilution method for measuring body volume.

    PubMed Central

    Nagao, N; Tamaki, K; Kuchiki, T; Nagao, M

    1995-01-01

    This study was designed to examine the validity of a new gas dilution method (GD) for measuring human body volume and to compare its accuracy with the results obtained by the underwater weighing method (UW). We measured the volume of plastic bottles and 16 subjects (including two females), aged 18-42 years with each method. For the bottles, the volume measured by hydrostatic weighing was correlated highly (r = 1.000) with that measured by the new gas dilution method. For the subjects, the body volume determined by the two methods was significantly correlated (r = 0.998). However, the subject's volume measured by the gas dilution method was significantly larger than that by underwater weighing method. There was significant correlation (r = 0.806) between GD volume-UW volume and the body mass index (BMI), so that UW volume could be predicted from GD volume and BMI. It can be concluded that the new gas dilution method offers promising possibilities for future research in the population who cannot submerge underwater. PMID:7551760

  1. REACHSCAN WITH PROBABALISTIC DILUTION MODEL AND ENDANGERED SPECIES DATABASE LINK

    EPA Science Inventory

    ReachScan, the Probabalistic Dilution Model (PDM),and the Endangered Species Database (ESDB) have been integrated into one package for distribution. ReachScan is an integrated surface water modeling and database system used to: (1) estimate surface water concentrations at, an...

  2. Reusable chelating resins concentrate metal ions from highly dilute solutions

    NASA Technical Reports Server (NTRS)

    Bauman, A. J.; Weetal, H. H.; Weliky, N.

    1966-01-01

    Column chromatographic method uses new metal chelating resins for recovering heavy-metal ions from highly dilute solutions. The absorbed heavy-metal cations may be removed from the chelating resins by acid or base washes. The resins are reusable after the washes are completed.

  3. Dissociation of dilute immiscible copper alloy thin films

    Microsoft Academic Search

    K. Barmak; G. A. Lucadamo; C. Jr. Cabral; C. Lavoie; J. M. E. Harper

    2000-01-01

    The dissociation behavior of dilute, immiscible Cu-alloy thin films is found to fall into three broad categories that correlate most closely with the form of the Cu-rich end of the binary alloy phase diagrams. Available thermodynamic and tracer diffusion data shed further light on alloy behavior. Eight alloying elements were selected for these studies, with five elements from groups 5

  4. Novel diluted magnetic semiconductor materials based on zinc oxide

    Microsoft Academic Search

    Deepayan Chakraborti

    2008-01-01

    The primary aim of this work was to develop a ZnO based diluted magnetic semiconductor (DMS) materials system which displays ferromagnetism above room temperature and to understand the origin of long-range ferromagnetic ordering in these systems. Recent developments in the field of spintronics (spin based electronics) have led to an extensive search for materials in which semiconducting properties can be

  5. Inhomogeneity in Co doped ZnO diluted magnetic semiconductor

    Microsoft Academic Search

    B. Sanyal; R. Knut; O. Näs; D. M. Iusan; O. Karis; O. Eriksson

    2008-01-01

    Here, we have studied the chemical and magnetic interactions in Co doped ZnO diluted magnetic semiconductor by ab initio density functional calculations. The calculated chemical pair interaction parameters suggest a strong tendency of clustering between Co atoms. Both chemical and magnetic pair interaction parameters are short ranged with a large first neighbor interaction. Monte Carlo simulations show that the Curie

  6. EDITORIAL: Focus on Dilute Magnetic Semiconductors FOCUS ON DILUTE MAGNETIC SEMICONDUCTORS

    NASA Astrophysics Data System (ADS)

    Chambers, Scott A.; Gallagher, Bryan

    2008-05-01

    This focus issue of New Journal of Physics is devoted to the materials science of dilute magnetic semiconductors (DMS). A DMS is traditionally defined as a diamagnetic semiconductor doped with a few to several atomic per cent of some transition metal with unpaired d electrons. Several kinds of dopant dopant interactions can in principle couple the dopant spins leading to a ferromagnetic ground state in a dilute magnetic system. These include superexchange, which occurs principally in oxides and only between dopants with one intervening oxygen, and double exchange, in which dopants of different formal charges exchange an electron. In both of these mechanisms, the ferromagnetic alignment is not critically dependent on free carriers in the host semiconductor because exchange occurs via bonds. A third mechanism, discovered in the last few years, involves electrons associated with lattice defects that can apparently couple dopant spins. This mechanism is not well understood. Finally, the most desirable mechanism is carrier-mediated exchange interaction in which the dopant spins are coupled by itinerant electrons or holes in the host semiconductor. This mechanism introduces a fundamental link between magnetic and electrical transport properties and offers the possibility of new spintronic functionalities. In particular electrical gate control of ferromagnetism and the use of spin polarized currents to carry signals for analog and digital applications. The spin light emitting diode is a prototypical device of this kind that has been extensively used to characterize the extent of spin polarization in the active light emitting semiconductor heterostructure. The prototypical carrier mediated ferromagnetic DMS is Mn-doped GaAs. This and closely related narrow gap III V materials have been very extensively studied. Their properties are generally quite well understood and they have led to important insights into fundamental properties of ferromagnetic systems with strong spin-orbit coupling. They have also led to the demonstration of a wide range of novel phenomena including some, like tunneling anisotropic magnetoresistance, which have subsequently been achieved in metal ferromagnetic systems. However despite considerable effort over many years the maximum Curie point achieved in (Ga,Mn)As is still less than 200 K. So unless some major new breakthrough is achieved these materials are unlikely to be of use for practical spin electronics technologies. In 2000, Dietl et al [1] published a seminal paper in which mean field theory was used to predict which of the common diamagnetic semiconductors would exhibit a Curie point above ambient if doped with 5 at.% Mn and a hole concentration of 3.5 × 1020 cm-3. Of the many host semiconductors simulated, only ZnO and GaN were predicted to exhibit a critical temperature in excess of 300 K. Since 2000, high-Tc DMS research has proliferated in both experimental and theoretical arenas. Many papers have been published containing claims of new DMS materials based largely on limited film growth, powder diffraction, and magnetometry. In these papers, a film which exhibits a hysteretic SQUID or VSM loop at 300 K and phase purity with only the host semiconductor detected by XRD are often claimed to be true ferromagnetic DMSs. Many of these papers are flawed because the criteria for a well-defined DMS are much more extensive. These include: (i) a random dopant distribution, (ii) a well-known and preferably unique charge state and preferentially a unique local structural environment for the dopant, (iii) a demonstrated coupling of the dopant spin to the host band structure, leading to spin polarization of the majority carriers, and (iv) a rational dependence of the saturation magnetization and Curie point on the magnetic dopant and carrier concentrations. Implicit in this list is that trivial causes of ferromagnetism, such as magnetic contamination and magnetic secondary phase formation, are eliminated. Yet, in many papers, the authors have not carried out the necessary control experiments and materials c

  7. A particle swarm algorithm for inspection optimization in serial multi-stage processes

    Microsoft Academic Search

    Ali Azadeh; Mohamad Sadegh Sangari; Alireza Shamekhi Amiri

    Implementing efficient inspection policies is much important for the organizations to reduce quality related costs. In this paper, a particle swarm optimization (PSO) algorithm is proposed to determine the optimal inspection policy in serial multi-stage processes. The policy consists of three decision parameters to be optimized; i.e. the stages in which inspection occurs, tolerance of inspection, and size of sample

  8. Multichannel PCR and Serial Transfer Machine as a Future Tool in Evolutionary

    E-print Network

    Walter, Nils G.

    BioFeature Multichannel PCR and Serial Transfer Machine as a Future Tool in Evolutionary species must be ob- served under different environmental constraints. Data obtained from these analyses (12,19), a machine for homogeneous and fast temperature cycling of many samples in parallel is needed

  9. Serialized Multitasking Code Generation from Dataflow Specification Seongnam Kwon Soonhoi Ha

    E-print Network

    Ha, Soonhoi

    time-to-market pres- sure. In the proposed design methodology, we specify the system behavior as a task technique for the code synthesis from the data- flow specification in the proposed system-level designSerialized Multitasking Code Generation from Dataflow Specification Seongnam Kwon Soonhoi Ha School

  10. Use of serial bone scans in assessing response of bone metastases to systemic treatment

    Microsoft Academic Search

    D. L. Citrin; C. Hougen; W. Zweibel; S. Schlise; B. Pruitt; W. Ershler; T. E. Davis; J. Harberg; A. I. Cohen

    1981-01-01

    The accuracy levels of serial radioisotope bone scans and conventional bone radiographs in assessing the response of bone metastases to systemic therapy were compared in 34 women with metastatic breast cancer. Each patient had measurable or evaluable nonosseous metastases, which were assessed independently of skeletal disease. The bone scan was found to be more accurate and sensitive indicator of the

  11. Application of support vector machine (SVM) on serial number identification of RMB

    Microsoft Academic Search

    Li Wenhong; Tian Wenjuan; Cao Xiyan; Gao Zhen

    2010-01-01

    Serial numbers identification of RMB (the name of Chinese paper currency) is a nonlinear and high dimensions pattern recognition problem which sample is limited. It is one of many difficulty problems in pattern recognition. It also has great research and practical value. This thesis studies the multi-class optimize algorithm in statistical learning theory, analyzes SMOD algorithm and its precondition of

  12. SERIAL ANALYSIS OF GENE EXPRESSION (SAGE) IN PREIMPLANTATION STAGE SWINE EMBRYOS

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Serial Analysis of Gene Expression (SAGE) enables both qualitative and quantitative analysis of gene expression on a whole-transcriptome level (4). SAGE consists of extracting mRNA template from cells of interest and performing a series of manipulations to isolate and sequence a population of 10-12...

  13. Equivalent Effects of Grouping by Time, Voice, and Location on Response Timing in Verbal Serial Memory

    ERIC Educational Resources Information Center

    Parmentier, Fabrice B. R.; Maybery, Murray T.

    2008-01-01

    The grouping of list items is known to improve serial memory accuracy and constrain the nature of temporal errors. A recent study (M. T. Maybery, F. B. R. Parmentier, & D. M. Jones, 2002) showed that grouping results in a temporal organization of the participants' responses that mimics the list structure but not the timing of its presentation.…

  14. Joint Stiffness Identification of Six-revolute Industrial Serial Robots Claire Dumas

    E-print Network

    Paris-Sud XI, Université de

    Joint Stiffness Identification of Six-revolute Industrial Serial Robots Claire Dumas , St.ec-nantes.fr Abstract Although robots tend to be as competitive as CNC machines for some operations, they are not yet the stiffness of industrial robots from robot manufacturers. As a consequence, this paper introduces a robust

  15. On Obtaining Maximum-Length Sequences for Accumulator-Based Serial TPG

    Microsoft Academic Search

    Dimitrios Kagaris; P. Karpodinis; Dimitris Nikolos

    2006-01-01

    Arithmetic-function modules, which are available in many circuits, can be utilized to generate test patterns and compact test responses. An accumulator-based scheme along with a procedure to find maximum-length nonlinear sequences for bit-serial test-pattern generators is proposed. The proposed scheme achieves good fault coverage with low hardware overhead and short test sequences

  16. Evaluation of the IMPAC66 Shock Test Machine, Serial Number 118

    Microsoft Academic Search

    Marshal A. Childers

    2002-01-01

    The purpose of this evaluation is to calibrate and identify the performance capabilities of the MTS IMPAC66 high velocity acceleration (HVA) shock test machine, Serial Number 118. This unit is currently situated at the U. S. Army Research Laboratory (ARL) in Building 4600 (Lab 1252) at Aberdeen Proving Ground, Maryland, and is used by ARL's Weapons and Materials Research Directorate.

  17. Serial exploitation of global sea cucumber fisheries Sean C Anderson1

    E-print Network

    Myers, Ransom A.

    Serial exploitation of global sea cucumber fisheries Sean C Anderson1 , Joanna Mills Flemming2 trajectory of sea cucumber fisheries 5 Drivers of sea cucumber fisheries 6 Rate of development 8 Distance in catch and value worldwide. One increasingly harvested group is sea cucumbers (class Holothuroidea

  18. NOAH, a tool for argument reduction, serial and parallel decomposition of decision tables

    Microsoft Academic Search

    Michal Pleban; Hubert Niewiadomski; Piotr Buciak; Henry Selvaraj; Piotr Sapiecha; Tadeusz Luba

    2003-01-01

    A tool for managing decision tables was developed and presented in this paper. The tool uses a number of algorithms, namely argument reduction, serial and parallel decomposition to perform operations on these tables. With the help of these operations, reduction in size of the tables can be achieved, leading to smaller memory requirements. The tool is a result of extending

  19. SEGMENTATION OF SERIAL MRI OF TBI PATIENTS USING PERSONALIZED ATLAS CONSTRUCTION AND TOPOLOGICAL CHANGE ESTIMATION

    E-print Network

    Prastawa, Marcel

    SEGMENTATION OF SERIAL MRI OF TBI PATIENTS USING PERSONALIZED ATLAS CONSTRUCTION AND TOPOLOGICAL University of California at Los Angeles ABSTRACT Traumatic brain injury (TBI) due to falls, car accidents of treatment efficacy can substantially benefit from longitudinal (4D) magnetic reso- nance imaging (MRI

  20. Design of a massively parallel computer using bit serial processing elements

    NASA Technical Reports Server (NTRS)

    Aburdene, Maurice F.; Khouri, Kamal S.; Piatt, Jason E.; Zheng, Jianqing

    1995-01-01

    A 1-bit serial processor designed for a parallel computer architecture is described. This processor is used to develop a massively parallel computational engine, with a single instruction-multiple data (SIMD) architecture. The computer is simulated and tested to verify its operation and to measure its performance for further development.

  1. Least squares regression analysis of serial scans in disc operating system environment

    Microsoft Academic Search

    R. O. Smith; M. S. Boyd; W. M. Jr. Flowers; P. H. Lehan; H. K. Hellems; W. J. McClain; B. F. Maskewitz

    1973-01-01

    From 3rd symposium on sharing of computer programs and technology in ; nuclear medicine; Miami, Florida, USA (16 Jun 1973). In proceedings of third ; symposium on sharing of computer programs and technology in nuclear medicine. ; Least squares regression analysis had been applied to serial scans of the ; myocardium. The computations were done with a Hewlett-Packard Model 2115A

  2. A comparison of brain activation patterns during covert and overt paced auditory serial addition test tasks

    Microsoft Academic Search

    Cristina Forn; Noelia Ventura-Campos; Antonio Belenguer; Vicente Belloch; Maria Antònia Parcet; César Ávila

    2008-01-01

    The Paced Auditory Serial Addition test (PASAT) is a sensitive task for evaluating cognitive impairment in patients with diffuse brain disorders, such as multiple sclerosis patients. Brain areas involved in this task have been investigated in diverse fMRI studies using different methodologies to control the subjects' responses during scanning. Here, we examined the possible differences between overt and covert responses

  3. The effect of serial founder-flush cycles on quantitative genetic variation in the housefly

    Microsoft Academic Search

    Edwin H Bryant; Lisa M Meffert

    1993-01-01

    Experimental populations of the housefly, initiated from a single outbred natural population, were subjected to five serial founder events of one, four, or 16 pairs of flies. After each bottleneck the populations were allowed to flush to approximately 1000 pairs, at which time they were assayed for additive genetic variance for eight morphometric traits using parental–offspring covariances. Additive genetic variance

  4. Velocity Level Kinematic Analysis of Serial James D. Robinson and M. John D. Hayes

    E-print Network

    Hayes, John

    Velocity Level Kinematic Analysis of Serial nA-Chains James D. Robinson and M. John D. Hayes inconveniently large to express explicitly. James D. Robinson Carleton University, Deptartment of Mechanical of Mechanical and Aerospace Engineering e-mail: jhayes@mae.carleton.ca 1 #12;2 James D. Robinson and M. John D

  5. Serial Order and Consonant-Vowel Structure in a Graphemic Output Buffer Model

    ERIC Educational Resources Information Center

    Glasspool, D.W.; Houghton, G.

    2005-01-01

    We review features of the spelling errors of dysgraphic patients with ''Graphemic Buffer Disorder'' (GBD). We argue that the errors made by such patients suggest the breakdown of a system used to generate serial order in the output stages of spelling production, and we develop a model for this system based on an existing theory of sequential…

  6. Department Directory PDF Main Area/Listings Phone Location/AddressSerial #

    E-print Network

    Weston, Ken

    Department Directory PDF Main Area/Listings Phone Location/AddressSerial # Academic Affairs, Provost and Executive Vice President Academic Affairs, Provost and Executive Vice President, Main Office Programs, Main Line 644-3272 5500 UCALI000895 International Programs, Main Line 2 644-3477 A5500 UCALI

  7. An Analysis of Serial Number Tracking Automatic Identification Technology as Used in Naval Aviation Programs

    Microsoft Academic Search

    Robert Csorba

    2002-01-01

    The Government Accounting Office found that the Navy, between 1996 and 1998, lost 3 billion in materiel in-transit. This thesis explores the benefits and cost of automatic identification and serial number tracking technologies under consideration by the Naval Supply Systems Command and the Naval Air Systems Command. Detailed cost-savings estimates are made for each aircraft type in the Navy inventory.

  8. Component Processes in Reading: Shared and Unique Variance in Serial and Isolated Naming Speed

    ERIC Educational Resources Information Center

    Logan, Jessica A. R.; Schatschneider, Christopher

    2014-01-01

    Reading ability is comprised of several component processes. In particular, the connection between the visual and verbal systems has been demonstrated to play an important role in the reading process. The present study provides a review of the existing literature on the visual verbal connection as measured by two tasks, rapid serial naming and…

  9. Rapid Serial Naming and Reading Ability: The Role of Lexical Access

    ERIC Educational Resources Information Center

    Logan, Jessica A. R.; Schatschneider, Christopher; Wagner, Richard K.

    2011-01-01

    Rapid serial naming tasks are frequently used to explain variance in reading skill. However, the construct being measured by rapid naming is yet undetermined. The Phonological Processing theory suggests that rapid naming relates to reading because of similar demands of access to long-term stored phonological representations of visual stimuli. Some…

  10. Verbal Working Memory and Language Production: Common Approaches to the Serial Ordering of Verbal Information

    ERIC Educational Resources Information Center

    Acheson, Daniel J.; MacDonald, Maryellen C.

    2009-01-01

    Verbal working memory (WM) tasks typically involve the language production architecture for recall; however, language production processes have had a minimal role in theorizing about WM. A framework for understanding verbal WM results is presented here. In this framework, domain-specific mechanisms for serial ordering in verbal WM are provided by…

  11. FREQUENCY OF ANEUPLOID SPERMATOZOA STUDIED BY MULTICOLOR FISH IN SERIAL SEMEN SAMPLES

    EPA Science Inventory

    Frequency of aneuploid spermatozoa studied by multicolor FISH in serial semen samples M. Vozdova1, S. D. Perreault2, O. Rezacova1, D. Zudova1 , Z. Zudova3, S. G. Selevan4, J. Rubes1,5 1Veterinary Research Institute, Brno, Czech Republic; 2U.S. Environmental Protection A...

  12. A SAGE (Serial Analysis of Gene Expression) View of Breast Tumor Progression1

    Microsoft Academic Search

    Dale A. Porter; Ian E. Krop; Selim Nasser; Dennis Sgroi; Carolyn M. Kaelin; Jeffrey R. Marks; Gregory Riggins; Kornelia Polyak

    2001-01-01

    To identify molecular alterations involved in the initiation and progres- sion of breast carcinomas, we analyzed the global gene expression profiles of normal mammary epithelial cells and in situ, invasive, and metastatic breast carcinomas using serial analysis of gene expression (SAGE). We identified sets of genes expressed only or most abundantly in a specific stage of breast tumorigenesis or in

  13. Development of efficient receiving hardware for laser satellite ranging on the basis of serial measurement equipment

    Microsoft Academic Search

    Yu. S. Denishchik; S. S. Denishchik; A. G. Medinskij; V. S. Ehssel'Bakh

    1990-01-01

    A microprocessor-controlled receiving device for laser satellite ranging based upon the serial measurement equipment is presented. The main equipment errors are taken into account in its design to minimize them. The proposed device allows to increase precision of range measurements and at the same time ensures high stability.

  14. The Relationship between Working Memory for Serial Order and Numerical Development: A Longitudinal Study

    ERIC Educational Resources Information Center

    Attout, Lucie; Noël, Marie-Pascale; Majerus, Steve

    2014-01-01

    Despite numerous studies, the link between verbal working memory (WM) and calculation abilities remains poorly understood. The present longitudinal study focuses specifically on the role of serial order retention capacities, based on recent findings suggesting a link between ordinal processing in verbal WM and numerical processing tasks. Children…

  15. Effects of the Gama Cuulu Radio Serial Drama on HIV-Related Behavior Change in Zambia

    Microsoft Academic Search

    Joan Marie Kraft; Zelee Hill; Ian Membe; Yujia Zhang; Elizabeth Onjoro Meassick; Michael Monsour; Mwendalubi Maumbi; Phillimon Ndubani; Joy Masheke Manengu; Alwyn Mwinga

    2012-01-01

    The Gama Cuulu radio serial drama is written and produced in Zambia's Southern Province. It promotes behavior change and service use to prevent HIV transmission. The authors evaluated the effects of Gama Cuulu on intermediate outcomes (e.g., perceived norms), as well as number of sexual partners, condom use, and HIV testing in the past year among adults between 18 and

  16. Serial analysis of gene expression associated with Babesoa bovis infection of Rhipecephalus (Boophilus) microplus

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Boophilus ticks are vectors of Babesia bovis, the protozoan causative agent of cattle fever, a disease which is responsible for significant production losses to cattle producers in much of Africa, Central and South America and Australia. We utilized Serial Analysis of Gene Expression (SAGE) to quant...

  17. APPLYING SERIAL ANALYSIS OF GENE EXPRESSION (SAGE) TO UNCOVER GENE IMPORTANT IN SWINE EMBRYO DEVELOPMENT

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The most significant finding of this research is the successful application of the new technique Serial Analysis of Gene Expression (SAGE) to simultaneously discover and identify over 200 potential genes that are expressed at significantly different levels between Day 11 and Day 12 stage porcine emb...

  18. Efficient Algorithm for ``On-the-Fly'' Error Analysis of Local or Distributed Serially Correlated Data

    E-print Network

    Goddard III, William A.

    Efficient Algorithm for ``On-the-Fly'' Error Analysis of Local or Distributed Serially Correlated.interscience.wiley.com). Abstract: We describe the Dynamic Distributable Decorrelation Algorithm (DDDA) which efficiently calculates algorithms of such simulations (e.g. Metropolis algorithm1 ) often involve Markov chains. The data generated

  19. Experimental study of supercapacitor serial resistance and capacitance variations with temperature

    Microsoft Academic Search

    H. Gualous; D. Bouquain; A. Berthon; J. M. Kauffmann

    2003-01-01

    This paper treats an experimental study of the electrical and the thermal behavior of supercapacitors for power electronics and transportation applications. In this study, the charge and discharge of supercapacitors have been characterized by taking into account the temperature variations of the device and its environment. Thermal dependence of supercapacitor serial resistance and capacitance is determined experimentally. An equivalent circuit

  20. Serial Administration of Clinical Concussion Assessments and Learning Effects in Healthy Young Athletes

    Microsoft Academic Search

    Tamara C. Valovich McLeod; David H. Perrin; Kevin M. Guskiewicz; Sandra J. Shultz; Robert Diamond; Bruce M. Gansneder

    2004-01-01

    ***Note: Figures may be missing from this format of the document Abstract: Objective: To determine if serial administration of the Standardized Assessment of Concussion (SAC) and Balance Error Scoring System (BESS) would elicit a learning effect in young athletes and to determine the intratester reliability of scoring the BESS. Design: A prospective study of 50 healthy young athletes who were

  1. The Transatlantic Moonstone: A Study of the Illustrated Serial in Harper's Weekly

    Microsoft Academic Search

    2009-01-01

    This article examines Wilkie Collins’s The Moonstone (1868), a novel that has attracted varied ideological critique yet whose different transatlantic forms remain understudied. In an international market ungoverned by copyright law, Collins sold his story on both sides of the Atlantic, but the serial of The Moonstone that reached American readers differed markedly from the British text. Whereas the British

  2. Haptic Manipulation of Serial-Chain Virtual Daniela Constantinescu* Septimiu E. Salcudean Elizabeth A. Croft

    E-print Network

    Constantinescu, Daniela

    1 Haptic Manipulation of Serial-Chain Virtual Mechanisms Daniela Constantinescu* Septimiu E, a haptic device controller is designed that penalizes users' motion along the directions resisted at the users' hand, and are derived via a Singular Value Decomposition-based algorithm. Haptic numerical

  3. Serial Vagus Nerve Stimulation Functional MRI in Treatment-Resistant Depression

    Microsoft Academic Search

    Ziad Nahas; Charlotte Teneback; Jeong-Ho Chae; Qiwen Mu; Chris Molnar; Frank A Kozel; John Walker; Berry Anderson; Jejo Koola; Samet Kose; Mikhail Lomarev; Daryl E Bohning; Mark S George

    2007-01-01

    Vagus nerve stimulation (VNS) therapy has shown antidepressant effects in open acute and long-term studies of treatment-resistant major depression. Mechanisms of action are not fully understood, although clinical data suggest slower onset therapeutic benefit than conventional psychotropic interventions. We set out to map brain systems activated by VNS and to identify serial brain functional correlates of antidepressant treatment and symptomatic

  4. The Assembly of Phonology From Print Is Serial and Subject to Strategic Control: Evidence From Serbian

    ERIC Educational Resources Information Center

    Havelka, Jelena; Rastle, Kathleen

    2005-01-01

    The Serbian writing system was used to investigate whether a serial procedure is implicated in print-to-sound translation and whether components of the reading aloud system can be strategically controlled. In mixed- and pure-alphabet lists, participants read aloud phonologically bivalent words comprising bivalent letters in initial or final…

  5. Serial Review: Alcohol, Oxidative Stress and Cell Injury Guest Editor: Arthur Cederbaum

    E-print Network

    Omiecinski, Curtis

    Serial Review: Alcohol, Oxidative Stress and Cell Injury Guest Editor: Arthur Cederbaum THE ROLE OF KUPFFER CELL OXIDANT PRODUCTION IN EARLY ETHANOL-INDUCED LIVER DISEASE MICHAEL D. WHEELER,* HIROSHI KONO by which Kupffer cell activation, oxidant formation, and cytokine production lead to liver damage

  6. Transitional Information in Spatial Serial Memory: Path Characteristics Affect Recall Performance

    Microsoft Academic Search

    Fabrice B. R. Parmentier; Greg Elford; Murray Mayberry

    2005-01-01

    This study examined the role of stimulus characteristics in a visuospatial order reconstruction task in which participants were required to recall the order of sequences of spatial locations. The complexity of the to-be-remembered sequences, as measured by path crossing, path length, and angles, was found to affect serial memory, in terms of both recall accuracy and response times. The results

  7. Moldy: a portable molecular dynamics simulation program for serial and parallel computers

    Microsoft Academic Search

    Keith Refson

    2000-01-01

    Moldy is a highly portable C program for performing molecular-dynamics simulations of solids and liquids using periodic boundary conditions. It runs in serial mode on a conventional workstation or on a parallel system using an interface to a parallel communications library such as MPI or BSP. The “replicated data” parallelization strategy is used to achieve reasonable performance with a minimal

  8. Shifting Priorities: Print and Electronic Serials at the University of Montana

    ERIC Educational Resources Information Center

    Millet, Michelle S.; Mueller, Susan

    2005-01-01

    Following a library-wide brainstorming session and retreat, the Dean of the Maureen and Mike Mansfield Library tasked an ad-hoc committee to discuss implications for the library and its users if certain processes were implemented or eliminated in order to streamline the processing of serials. As the library's collection continues to shift from…

  9. Dynamic equilibrium of Marek’s disease genomes during in vitro serial passage

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Marek’s disease (MD) is a lymphoproliferative disease of chickens caused by gallid herpesvirus type 2 (GaHV-2). The disease is controlled through mass vaccination with live-attenuated strains. Attenuation of oncogenic GaHV-2 involves the serial passage of a virulent field isolate in avian embryo fib...

  10. Serial\\/parallel (S\\/P) turbo codes for low error rates

    Microsoft Academic Search

    Horacio Gonzalez; Claude Berrou; Sylvie Kerouédan

    2004-01-01

    This article describes a new concatenation scheme for turbo codes, a hybrid model between serial and parallel turbo codes, which offers improved asymptotic performance. We review the classical regular interleaving problems and we show how this new hybrid model allows us to keep a simple regular interleaving while outperforming more complex permutations at low error rates. Simulation results are presented

  11. Benefits of Blocked Over Serial Feedback on Complex Motor Skill Learning

    Microsoft Academic Search

    Gabriele Wulf; Monika Hörger; Charles H. Shea

    1999-01-01

    The effects of blocked versus serial feedback (FB) on the learning of a complex motor skill—the production of slalom type movements on a ski-simulator—were examined. FB was given about force onset, which is considered to be a measure of movement efficiency; relatively late force onsets characterize expert performance. One group of participants (blocked FB; n = 10) received FB about

  12. Explaining worldwide patterns of human genetic variation using a coalescent-based serial founder

    E-print Network

    Jakobsson, Mattias

    Explaining worldwide patterns of human genetic variation using a coalescent-based serial founder,c,1 aCenter for Computational Medicine and Bioinformatics and cDepartment of Human Genetics incorporation of a cumulative effect of genetic drift as humans colonized the world. admixture heterozygosity

  13. Comparative Study on the Handling of Serials by ISDS Centres and National Bibliographic Agencies.

    ERIC Educational Resources Information Center

    Bouffez, Francoise; Grousseaud, Annette

    A survey was conducted in July 1977 of 38 Centers of International Serials Data System (ISDS) and of national bibliographic agencies or comparable bodies in the same countries to study the various aspects of the identification and description of standardized bibliographic data by the ISDS and the International Standard Bibliographic Description…

  14. Forensic DNA against wildlife poaching: Identification of a serial wolf killing in Italy

    Microsoft Academic Search

    Romolo Caniglia; Elena Fabbri; Claudia Greco; Marco Galaverni; Ettore Randi

    2010-01-01

    The recent expansion of the Italian wolf population through the Apennine and western Alps, after centuries of contractions, is causing conflicts with human activities leading to a rise in poaching or illegal killings. Here we show how molecular population genetics has been used to identify a suspect serial wolf killer. We analysed DNA extracted from a necklace made of ten

  15. Parallel and Serial Neural Mechanisms for Visual Search in Macaque Area V4

    Microsoft Academic Search

    Narcisse P. Bichot; Andrew F. Rossi; Robert Desimone

    2005-01-01

    To find a target object in a crowded scene, a face in a crowd for example, the visual system might turn the neural representation of each object on and off in a serial fashion, testing each representation against a template of the target item. Alternatively, it might allow the processing of all objects in parallel but bias activity in favor

  16. Spinal epidural abscess with gadolinium-enhanced MRI: serial follow-up studies and clinical correlations

    Microsoft Academic Search

    N. Sadato; Y. Numaguchi; D. Rigamonti; T. Kodama; E. Nussbaum; S. Sato; M. Rothman

    1994-01-01

    We reviewed serial MRI with and without gadolinium-DTPA in eight patients with spinal epidural abscess and correlated the findings and the clinical manifestations. In four patients, diffuse abscesses spanned four vertebral bodies or more; the others had focal abscesses associated with osteomyelitis and\\/or diskitis. In three of the four patients with diffuse abscesses, MRI (NCMRI) showed diffuse encasement of the

  17. 27 CFR 20.179 - Package identification number or serial number.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...Continuation of numbering series. If a change in proprietorship...numbering system in use at the time of the change may be continued...serial numbers are used at the time of a change, the numbering series in use at the time of the change may be...

  18. 27 CFR 20.179 - Package identification number or serial number.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...Continuation of numbering series. If a change in proprietorship...numbering system in use at the time of the change may be continued...serial numbers are used at the time of a change, the numbering series in use at the time of the change may be...

  19. 27 CFR 20.179 - Package identification number or serial number.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...Continuation of numbering series. If a change in proprietorship...numbering system in use at the time of the change may be continued...serial numbers are used at the time of a change, the numbering series in use at the time of the change may be...

  20. 27 CFR 20.179 - Package identification number or serial number.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...Continuation of numbering series. If a change in proprietorship...numbering system in use at the time of the change may be continued...serial numbers are used at the time of a change, the numbering series in use at the time of the change may be...