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Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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1

Multi-mode Damage Detection Methods with Piezoelectric Wafer Active Sensors  

E-Print Network [OSTI]

modes structural health monitoring (SHM) and non- destructive evaluation (NDE) simply by changing the driving frequencies. This paper presents research results obtained by using PWAS transducer for SHM/NDE impedance measurements; (3) PWAS ultrasonic SHM/NDE; and (4) PWAS multi-mode corrosion detection

Giurgiutiu, Victor

2

Passive Neutron Detection at Borders  

SciTech Connect (OSTI)

Radiation portal monitor systems have been deployed to screen for illicit trafficking of radioactive materials at international border crossings. This report reviews some of the neutron detection requirements and capabilities of passive detection systems used for such applications. Simulations show the effects of cargo materials on neutron spectra, different detector geometries, using a large-array of neutron detectors, and the effects of backgrounds including “ship effect” neutrons.

Kouzes, Richard T.; Siciliano, Edward R.; Ely, James H.; Keller, Paul E.; McConn, Ronald J.

2008-03-01T23:59:59.000Z

3

PASSIVE DETECTION OF VEHICLE LOADING  

SciTech Connect (OSTI)

The Digital Imaging and Remote Sensing Laboratory (DIRS) at the Rochester Institute of Technology, along with the Savannah River National Laboratory is investigating passive methods to quantify vehicle loading. The research described in this paper investigates multiple vehicle indicators including brake temperature, tire temperature, engine temperature, acceleration and deceleration rates, engine acoustics, suspension response, tire deformation and vibrational response. Our investigation into these variables includes building and implementing a sensing system for data collection as well as multiple full-scale vehicle tests. The sensing system includes; infrared video cameras, triaxial accelerometers, microphones, video cameras and thermocouples. The full scale testing includes both a medium size dump truck and a tractor-trailer truck on closed courses with loads spanning the full range of the vehicle's capacity. Statistical analysis of the collected data is used to determine the effectiveness of each of the indicators for characterizing the weight of a vehicle. The final sensing system will monitor multiple load indicators and combine the results to achieve a more accurate measurement than any of the indicators could provide alone.

Garrett, A.

2012-01-03T23:59:59.000Z

4

Discreet passive explosive detection through 2-sided wave guided fluorescence  

DOE Patents [OSTI]

The current invention provides a passive sampling device suitable for collecting and detecting the presence of target analytes. In particular, the passive sampling device is suitable for detecting nitro-aromatic compounds. The current invention further provides a passive sampling device reader suitable for determining the collection of target analytes. Additionally, the current invention provides methods for detecting target analytes using the passive sampling device and the passive sampling device reader.

Harper, Ross James; la Grone, Marcus; Fisher, Mark

2012-10-16T23:59:59.000Z

5

Passive detection of vehicle loading Troy R. McKaya  

E-Print Network [OSTI]

Passive detection of vehicle loading Troy R. McKaya , Carl Salvaggioa , Jason W. Faulringa , Philip-scale vehicle tests. The sensing system includes; infrared video cameras, triaxial accelerometers, microphones for characterizing the weight of a vehicle. The final sensing system will monitor multiple load indicators

Salvaggio, Carl

6

Power consumption optimization in multi-mode mobile relay  

E-Print Network [OSTI]

Power consumption optimization in multi-mode mobile relay C´edric L´evy-Bencheton #1 , Guillaume-mode can reduce terminal power consumption. Software Defined Radio is an enabler towards multi through relays, is another solution to reduce power consumption. We look at multi-mode relaying, where

Paris-Sud XI, Université de

7

Passive Millimeter-Wave Spectrometer for Remote Chemical Detection  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Closed Captioning Transcript Closed Captioning Transcript Welcome to a demonstration of the Passive Millimeter-Wave Spectrometer for Remote Chemical Detection. The ultimate goal of the project was to detect a hot target gas in front of a cooler background. This setup was eventually tested at the Nevada Test Site. Prior to field test we tested the concept in a laboratory. We simulated the field conditions by simultaneously reducing the two relative temperatures. In this demonstration we will show a room temperature gas (CH3CN) with a cold background (liquid nitrogen). To understand the experiment we will be showing, the first subplot here represents all data channels plotted on a single plot, the second plot represents a two-dimensional representation of the same data, the X axis represents time, the Y axis represents frequency. As the plot is animated later the first and second subplots will have a cross section marker sweep across them.

8

Remote Detection of Heated Ethanol Plumes by Airborne Passive Fourier Transform Infrared Spectrometry  

Science Journals Connector (OSTI)

Methodology is developed for the automated detection of heated plumes of ethanol vapor with airborne passive Fourier transform infrared spectrometry. Positioned in a fixed-wing...

Tarumi, Toshiyasu; Small, Gary W; Combs, Roger J; Kroutil, Robert T

2003-01-01T23:59:59.000Z

9

Passive Detection of Narrowband Sources Using a Sensor Array  

SciTech Connect (OSTI)

In this report we derive a model for a highly scattering medium, implemented as a set of MATLAB functions. This model is used to analyze an approach for using time-reversal to enhance the detection of a single frequency source in a highly scattering medium. The basic approach is to apply the singular value decomposition to the multistatic response matrix for a time-reversal array system. We then use the array in a purely passive mode, measuring the response to the presence of a source. The measured response is projected onto the singular vectors, creating a time-reversal pseudo-spectrum. We can then apply standard detection techniques to the pseudo-spectrum to determine the presence of a source. If the source is close to a particular scatterer in the medium, then we would expect an enhancement of the inner product between the array response to the source with the singular vector associated with that scatterer. In this note we begin by deriving the Foldy-Lax model of a highly scattering medium, calculate both the field emitted by the source and the multistatic response matrix of a time-reversal array system in the medium, then describe the initial analysis approach.

Chambers, D H; Candy, J V; Guidry, B L

2007-10-24T23:59:59.000Z

10

Solving Inverse Detection Problems Using Passive Radiation Signatures  

SciTech Connect (OSTI)

The ability to reconstruct an unknown radioactive object based on its passive gamma-ray and neutron signatures is very important in homeland security applications. Often in the analysis of unknown radioactive objects, for simplicity or speed or because there is no other information, they are modeled as spherically symmetric regardless of their actual geometry. In these presentation we discuss the accuracy and implications of this approximation for decay gamma rays and for neutron-induced gamma rays. We discuss an extension of spherical raytracing (for uncollided fluxes) that allows it to be used when the exterior shielding is flat or cylindrical. We revisit some early results in boundary perturbation theory, showing that the Roussopolos estimate is the correct one to use when the quantity of interest is the flux or leakage on the boundary. We apply boundary perturbation theory to problems in which spherically symmetric systems are perturbed in asymmetric nonspherical ways. We apply mesh adaptive direct search (MADS) algorithms to object reconstructions. We present a benchmark test set that may be used to quantitatively evaluate inverse detection methods.

Favorite, Jeffrey A. [Los Alamos National Laboratory; Armstrong, Jerawan C. [Los Alamos National Laboratory; Vaquer, Pablo A. [Los Alamos National Laboratory

2012-08-15T23:59:59.000Z

11

Vibration Control of Multi-Mode Rotor-Bearing Systems  

Science Journals Connector (OSTI)

8 March 1983 research-article Vibration Control of Multi-Mode Rotor-Bearing...least-squares method to minimize the vibration of any general rotor-bearing system...to implement the open-loop adaptive vibration control strategies outlined in the paper...

1983-01-01T23:59:59.000Z

12

Multiple Filtering Strategy for the Automated Detection of Ethanol by Passive Fourier Transform Infrared Spectrometry  

Science Journals Connector (OSTI)

Digital filtering methods are evaluated for use in the automated detection of ethanol from passive Fourier transform infrared (FT-IR) data collected during laboratory and open-air...

Idwasi, Patrick O; Small, Gary W; Combs, Roger J; Knapp, Robert B; Kroutil, Robert T

2001-01-01T23:59:59.000Z

13

Multi mode nano scale Raman echo quantum memory  

E-Print Network [OSTI]

Low loss magnetic surface plasmon polariton (SPP) modes characterized by enhanced electrical field component and subwavelength confinement on the dielectric and negative-index metamaterial interface are presented. We demonstrate a possibility of storage and perfect retrieval of the low loss magnetic SPP fields by using a photon echo quantum memory on Raman atomic transition. We describe specific properties of the proposed technique which opens a possibility for efficient nano scale multi-mode quantum memory.

S. A. Moiseev; E. S. Moiseev

2010-01-31T23:59:59.000Z

14

Combining Radiography and Passive Measurements for Radiological Threat Detection in Cargo  

SciTech Connect (OSTI)

Abstract Radiography is widely understood to provide information complimentary to passive detection: while not directly sensitive to radiological materials, radiography can reveal highly shielded regions which may mask a passive radiological signal. We present a method for combining radiographic and passive data which uses the radiograph to provide an estimate of scatter and attenuation for possible sources. This approach allows quantitative use of radiographic images without relying on image interpretation, and results in a probabilistic description of likely source locations and strengths. We present first results for this method for a simple modeled test case of a cargo container driving through a PVT portal. With this inversion approach, we address criteria for an integrated passive and radiographic screening system and how detection of SNM threats might be improved in such a system.

Miller, Erin A.; White, Timothy A.; Jarman, Kenneth D.; Kouzes, Richard T.; Kulisek, Jonathan A.; Robinson, Sean M.; Scherrer, Charles; Wittman, Richard S.

2012-12-01T23:59:59.000Z

15

PROJECT SPECIFIC CATEGORICAL EXCLUSION FOR A WAVE GLIDER-BASED PASSIVE ACOUSTIC DETECTION SYSTEM,  

Broader source: Energy.gov (indexed) [DOE]

SPECIFIC CATEGORICAL EXCLUSION FOR A WAVE SPECIFIC CATEGORICAL EXCLUSION FOR A WAVE GLIDER-BASED PASSIVE ACOUSTIC DETECTION SYSTEM, Attachment PACIFIC NORTHWEST NATIONAL LABORATORY, RICHLAND, WASHINGTON Proposed Action Pacific Northwest National Laboratory (PNNL) proposes to conduct a proof-of-principle study to develop a wave glider-based passive acoustic detection system for monitoring whale populations (e.g., presence, distribution, relative abundance). Long-term goals of the project include better understanding whale populations to facilitate environmentally responsible development of offshore energy and improving the capability to monitor the world's oceans. Location of Action The proposed action would occur at PNNL facilities in Richland, Washington; at the Marine Science Laboratory

16

Passive Neutron Detection in Ports for Homeland Security Applications  

E-Print Network [OSTI]

with experimental measurements showed that detectors parallel to the surface of water were best at detecting neutron sources below the surface. Additionally, stacking detectors and placing a cadmium sheet between the polyethylene blocks resulted in a greater...

Pedicini, Eowyn E

2013-05-07T23:59:59.000Z

17

Multi-mode ultrasonic welding control and optimization  

DOE Patents [OSTI]

A system and method for providing multi-mode control of an ultrasonic welding system. In one embodiment, the control modes include the energy of the weld, the time of the welding process and the compression displacement of the parts being welded during the welding process. The method includes providing thresholds for each of the modes, and terminating the welding process after the threshold for each mode has been reached, the threshold for more than one mode has been reached or the threshold for one of the modes has been reached. The welding control can be either open-loop or closed-loop, where the open-loop process provides the mode thresholds and once one or more of those thresholds is reached the welding process is terminated. The closed-loop control provides feedback of the weld energy and/or the compression displacement so that the weld power and/or weld pressure can be increased or decreased accordingly.

Tang, Jason C.H.; Cai, Wayne W

2013-05-28T23:59:59.000Z

18

Generation of communication schedules for multi-mode distributed real-time applications  

Science Journals Connector (OSTI)

A key problem in designing multi-mode real-time systems is the generation of schedules to reduce the complexities of transforming the model semantics to code. Moreover, distributed multi-mode applications are prone to suffer from delays incurred during ...

Akramul Azim; Gonzalo Carvajal; Rodolfo Pellizzoni; Sebastian Fischmeister

2014-03-01T23:59:59.000Z

19

Real-time multi-mode neutron multiplicity counter  

DOE Patents [OSTI]

Embodiments are directed to a digital data acquisition method that collects data regarding nuclear fission at high rates and performs real-time preprocessing of large volumes of data into directly useable forms for use in a system that performs non-destructive assaying of nuclear material and assemblies for mass and multiplication of special nuclear material (SNM). Pulses from a multi-detector array are fed in parallel to individual inputs that are tied to individual bits in a digital word. Data is collected by loading a word at the individual bit level in parallel, to reduce the latency associated with current shift-register systems. The word is read at regular intervals, all bits simultaneously, with no manipulation. The word is passed to a number of storage locations for subsequent processing, thereby removing the front-end problem of pulse pileup. The word is used simultaneously in several internal processing schemes that assemble the data in a number of more directly useable forms. The detector includes a multi-mode counter that executes a number of different count algorithms in parallel to determine different attributes of the count data.

Rowland, Mark S; Alvarez, Raymond A

2013-02-26T23:59:59.000Z

20

A passive approach for effective detection and localization of region-level video forgery with spatio-temporal coherence analysis  

Science Journals Connector (OSTI)

In this paper, we present a passive approach for effective detection and localization of region-level forgery from video sequences possibly with camera motion. As most digital image/video capture devices do not have modules for embedding watermark or ... Keywords: Exemplar-based texture synthesis, Passive video forgery detection, Region-level inpainting, Spatio-temporal slice analysis, Temporal copy-and-paste

Cheng-Shian Lin, Jyh-Jong Tsay

2014-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Multi-mode two-dimensional infrared spectroscopy of peptides and proteins  

E-Print Network [OSTI]

In this thesis, a methodology for understanding structural stability of proteins through multi-mode two-dimensional infrared (2D IR) spectroscopy is developed. The experimental framework for generation of broadband infrared ...

DeFlores, Lauren P

2008-01-01T23:59:59.000Z

22

Policy on Programme Titles, Learning Outcomes and Courses (Multi-Location, Multi-Mode Programmes)  

E-Print Network [OSTI]

Policy on Programme Titles, Learning Outcomes and Courses (Multi-Location, Multi-Mode Programmes) In June 2012, a Policy on Programme Titles, Learning Outcomes and Courses was implemented. The policy-permissible variation between programmes offered in different locations and modes. The key points of the Policy

Painter, Kevin

23

Multi-mode wavepath depth imaging for the SEG/EAGE salt model  

SciTech Connect (OSTI)

Elastic depth imaging of both P-wave and S-wave prestack seismic reflection data is formulated as a degraded form of Kirchhoff migration known as Wavepath Migration (WM). Applications to the SEG/EAGE salt model show that the method is sufficiently versatile anti relaitively inexpensive. It handles S-wave data with at least the same accuracy as Pwave data when local mode conversions are removed. WM also provides an understanding of multi-mode illumination.

Druzhinin, A. (Alexander); House, L. S. (Leigh S.); Pajchel, J.

2003-01-01T23:59:59.000Z

24

Detection of Rainfall Events Using Underwater Passive Aquatic Sensors and Air–Sea Temperature Changes in the Tropical Pacific Ocean  

Science Journals Connector (OSTI)

Several years of long-term high temporal resolution ocean ambient noise data from the tropical Pacific Ocean are analyzed to detect oceanic rainfall. Ocean ambient noise generated by rainfall and wind are identified through an acoustic ...

Barry B. Ma; Jeffrey A. Nystuen

2007-10-01T23:59:59.000Z

25

Method and apparatus for operating a powertrain system upon detecting a stuck-closed clutch  

DOE Patents [OSTI]

A powertrain system includes a multi-mode transmission having a plurality of torque machines. A method for controlling the powertrain system includes identifying all presently applied clutches including commanded applied clutches and the stuck-closed clutch upon detecting one of the torque-transfer clutches is in a stuck-closed condition. A closed-loop control system is employed to control operation of the multi-mode transmission accounting for all the presently applied clutches.

Hansen, R. Anthony

2014-02-18T23:59:59.000Z

26

From Reflexive to Passive  

E-Print Network [OSTI]

Previous approaches to the passive development from a reflexive marking focus on how the former is similar to the latter semantically and syntactically. I show that the passive evolution is better understood by looking at ...

Sohn, Joong-Sun

1998-01-01T23:59:59.000Z

27

Brief Coordinated passivation designs  

Science Journals Connector (OSTI)

In two-input (or multi-input) nonlinear systems it may be possible to achieve feedback passivation of a chosen input using the second input (other inputs) to improve the stability properties of the first input's zero dynamics. This 'coordinated passivation' ... Keywords: Nonlinear passivation, Turbocharged diesel engine, Zero dynamics

Michael Larsen; Mrdjan Jankovi?; Petar V. Kokotovi?

2003-02-01T23:59:59.000Z

28

A LOW COST MULTI-BAND/MULTI-MODE RADIO FOR PUBLIC SAFETY S.M. Hasan (Virginia Tech, Blacksburg, VA, U.S.A., hasan@vt.edu); P. Balister  

E-Print Network [OSTI]

A LOW COST MULTI-BAND/MULTI-MODE RADIO FOR PUBLIC SAFETY S.M. Hasan (Virginia Tech, Blacksburg, VA, U.S.A., hasan@vt.edu); P. Balister (Virginia Tech, Blacksburg, VA, U.S.A., balister@vt.edu); K. Lee

Ellingson, Steven W.

29

Semiconductor optical amplifier-based heterodyning detection for resolving optical terahertz beat-tone signals from passively mode-locked semiconductor lasers  

SciTech Connect (OSTI)

An all-optical heterodyne approach based on a room-temperature controlled semiconductor optical amplifier (SOA) for measuring the frequency and linewidth of the terahertz beat-tone signal from a passively mode-locked laser is proposed. Under the injection of two external cavity lasers, the SOA acts as a local oscillator at their detuning frequency and also as an optical frequency mixer whose inputs are the self-modulated spectrum of the device under test and the two laser beams. Frequency and linewidth of the intermediate frequency signal (and therefore, the beat-tone signal) are resolved by using a photodiode and an electrical spectrum analyzer.

Latkowski, Sylwester; Maldonado-Basilio, Ramon; Carney, Kevin; Parra-Cetina, Josue; Philippe, Severine; Landais, Pascal [Research Institute for Networks and Communications Engineering, Dublin City University, Glasnevin, Dublin 9 (Ireland)

2010-08-23T23:59:59.000Z

30

Passive solar homes. [Glossary  

SciTech Connect (OSTI)

The concept of passive solar energy is described; the various functions which passive solar systems must perform are explained; and the various types of passive systems found in the Cycle 5 projects are discussed. Each of 91 solar home designs are discussed and some of the key points raised in the discussion of passive solar concepts are indicated in these descriptions and on the illustrations. Additional detail on issues of climate requirements and site design concerns, examples of building construction details showing good practice, and suggestions on how to market solar homes are included. The appendices address more technical aspects of the design and evaluation of passive solar homes, and provide information on other resources available to those involved in passive solar housing. (MHR)

McPhillips, M.; Powell, P.C. (eds.)

1982-01-01T23:59:59.000Z

31

Passive solar space heating  

SciTech Connect (OSTI)

An overview of passive solar space heating is presented indicating trends in design, new developments, performance measures, analytical design aids, and monitored building results.

Balcomb, J.D.

1980-01-01T23:59:59.000Z

32

Principles of Passive House  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Principles of Passive House Principles of Passive House Speaker(s): Wolfgang Feist Date: November 1, 2010 - 12:00pm Location: 90-4133 Seminar Host/Point of Contact: Alan Meier The Passive House ("Passivhaus") concept is a rigorous, voluntary energy performance standard for buildings that reduces heating requirements by up to 90% and overall energy use by up to 80% over standard construction. Developed in Germany in the early 1990s and drawing on Super-insulated and Passive Solar ideas from North America and "Low Energy" European building standards, the concept of a building that could be practically constructed to maintain a comfortable interior climate without conventional heating or cooling systems was devised, tested and proven. The Passive House remains comfortable without large "active"

33

Passive solar construction handbook  

SciTech Connect (OSTI)

Many of the basic elements of passive solar design are reviewed. The unique design constraints presented in passive homes are introduced and many of the salient issues influencing design decisions are described briefly. Passive solar construction is described for each passive system type: direct gain, thermal storage wall, attached sunspace, thermal storage roof, and convective loop. For each system type, important design and construction issues are discussed and case studies illustrating designed and built examples of the system type are presented. Construction details are given and construction and thermal performance information is given for the materials used in collector components, storage components, and control components. Included are glazing materials, framing systems, caulking and sealants, concrete masonry, concrete, brick, shading, reflectors, and insulators. The Load Collector Ratio method for estimating passive system performance is appended, and other analysis methods are briefly summarized. (LEW)

Levy, E.; Evans, D.; Gardstein, C.

1981-08-01T23:59:59.000Z

34

ACR-1000 Passive Features  

SciTech Connect (OSTI)

The Advanced CANDU Reactor{sup TM} (ACR{sup TM}) is a Generation III+ pressure tube type reactor using light water coolant and heavy water moderator. The ACR-1000 reactor design is an evolutionary extension of the proven CANDU reactor design. The ACR-1000 incorporates multiple and diverse passive systems for accident mitigation. Where necessary, one or more features that are passive in nature have been included for mitigation of any postulated accident event. This paper describes how the use of passive design elements complements active features enhances reliability and improves safety margins. (authors)

Lekakh, Boris; Hau, Ken; Ford, Steven [Atomic Energy of Canada Ltd. (Canada)

2006-07-01T23:59:59.000Z

35

Acquisition of the Passive  

E-Print Network [OSTI]

This single-subject pilot study, modeled after de Villiers' 1973, investigates the subject's acquisition of the passive construction (i.e., 'The boy was hit by the girl', as opposed to The girl hit the boy'). The purposes ...

Hill, Francine

1998-01-01T23:59:59.000Z

36

Compressive Passive Millimeter-Wave Imager (Flash format)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Compressive Passive Millimeter-Wave Imager > (Flash) Compressive Passive Millimeter-Wave Imager > (Flash) Multimedia Nuclear Systems Analysis Engineering Analysis Nonproliferation and National Security Detection & Diagnostic Systems Compressive Passive Millimeter-Wave Imager VIDEO TRANSCRIPT Remote Vital Sign Monitoring System Preventing the Worst (by CNN) Engineering Development & Applications Argonne's Nuclear Science & Technology Legacy Other Multimedia Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Detection & Diagnostic Systems - Multimedia Bookmark and Share Compressive Passive Millimeter-Wave Imager Argonne National Laboratory Read full story Argonne has developed a passive compressive sensing system that uses millimeter waves (MMWs) to rapidly image targets with high resolution and

37

Method of passivating semiconductor surfaces  

DOE Patents [OSTI]

A method of passivating Group III-V or II-VI semiconductor compound surfaces. The method includes selecting a passivating material having a lattice constant substantially mismatched to the lattice constant of the semiconductor compound. The passivating material is then grown as an ultrathin layer of passivating material on the surface of the Group III-V or II-VI semiconductor compound. The passivating material is grown to a thickness sufficient to maintain a coherent interface between the ultrathin passivating material and the semiconductor compound. In addition, a device formed from such method is also disclosed.

Wanlass, Mark W. (Golden, CO)

1990-01-01T23:59:59.000Z

38

Passive Solar Space Heat | Open Energy Information  

Open Energy Info (EERE)

Passive Solar Space Heat Incentives Retrieved from "http:en.openei.orgwindex.php?titlePassiveSolarSpaceHeat&oldid26718...

39

Passive Sensors | Open Energy Information  

Open Energy Info (EERE)

Passive Sensors Passive Sensors Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Passive Sensors Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Remote Sensing Techniques Exploration Sub Group: Passive Sensors Parent Exploration Technique: Remote Sensing Techniques Information Provided by Technique Lithology: Mineral maps can be used to show the presence of hydrothermal minerals and mineral assemblages Stratigraphic/Structural: Map structures/faults and regional strain rates Hydrological: Map surface water features Thermal: Map surface temperatures Dictionary.png Passive Sensors: Sensors that measure energy which is naturally available in the environment. Other definitions:Wikipedia Reegle

40

Compressive Passive Millimeter-Wave Imager - Argonne National Laboratory  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Compressive Passive Millimeter-Wave Imager Compressive Passive Millimeter-Wave Imager Multimedia Nuclear Systems Analysis Engineering Analysis Nonproliferation and National Security Detection & Diagnostic Systems Compressive Passive Millimeter-Wave Imager VIDEO TRANSCRIPT Remote Vital Sign Monitoring System Preventing the Worst (by CNN) Engineering Development & Applications Argonne's Nuclear Science & Technology Legacy Other Multimedia Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Detection & Diagnostic Systems Multimedia Compressive Passive Millimeter-Wave Imager Video | Other sizes/formats available Other available versions of this video: Problems viewing the video in this page? Choose another format/size from the menu below; this video is available in Flash Video Flash, Quicktime video Quicktime or Windows Media video Windows Media format

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Passive Time Coincidence Measurements with HEU Oxide Fuel Pins  

SciTech Connect (OSTI)

Passive time coincidence measurements have been performed on highly enriched uranium (HEU) oxide fuel pins at the Idaho National Laboratory Power Burst Facility. These experiments evaluate HEU detection capability using passive coincidence counting when utilizing moderated 3He tubes. Data acquisition was performed with the Nuclear Material Identification System (NMIS) to calculate the neutron coincidence time distributions. The amounts of HEU measured were 1 kg, 4 kg, and 8 kg in sealed 55-gallon drums. Data collected with the 3He tubes also include passive measurement of 31 kg of depleted uranium (DU) in order to determine the ability to distinguish HEU from DU. This paper presents results from the measurements.

McConchie, Seth M [ORNL] [ORNL; Hausladen, Paul [ORNL] [ORNL; Mihalczo, John T [ORNL] [ORNL

2008-01-01T23:59:59.000Z

42

Passivated niobium cavities  

DOE Patents [OSTI]

A niobium cavity exhibiting high quality factors at high gradients is provided by treating a niobium cavity through a process comprising: 1) removing surface oxides by plasma etching or a similar process; 2) removing hydrogen or other gases absorbed in the bulk niobium by high temperature treatment of the cavity under ultra high vacuum to achieve hydrogen outgassing; and 3) assuring the long term chemical stability of the niobium cavity by applying a passivating layer of a superconducting material having a superconducting transition temperature higher than niobium thereby reducing losses from electron (cooper pair) scattering in the near surface region of the interior of the niobium cavity. According to a preferred embodiment, the passivating layer comprises niobium nitride (NbN) applied by reactive sputtering.

Myneni, Ganapati Rao (Yorktown, VA); Hjorvarsson, Bjorgvin (Lagga Arby, SE); Ciovati, Gianluigi (Newport News, VA)

2006-12-19T23:59:59.000Z

43

Passive solar design handbook  

SciTech Connect (OSTI)

The Passive Solar Design Handbook, Volume Three updates Volume Two by presenting extensive new data on the optimum mix of conservation and solar direct gain, sunspaces, thermal storage walls, and solar radiation. The direct gain, thermal storage wall, and solar radiation data are greatly expanded relative to the Volume 2 coverage. The needed flexibility to analyze a variety of system designs is accommodated by the large number of reference designs to be encompassed - 94 in contrast to 6 in Volume two - and the large amount of sensitivity data for direct gain and sunspace systems - approximately 1100 separate curves.

Jones, R.W.

1981-01-01T23:59:59.000Z

44

Section 43: Passive Institutional Controls  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

(40 CFR 194.43) United States Department of Energy Waste Isolation Pilot Plant Carlsbad Field Office Carlsbad, New Mexico Compliance Recertification Application 2014 Passive...

45

Fly ash carbon passivation  

DOE Patents [OSTI]

A thermal method to passivate the carbon and/or other components in fly ash significantly decreases adsorption. The passivated carbon remains in the fly ash. Heating the fly ash to about 500 and 800 degrees C. under inert gas conditions sharply decreases the amount of surfactant adsorbed by the fly ash recovered after thermal treatment despite the fact that the carbon content remains in the fly ash. Using oxygen and inert gas mixtures, the present invention shows that a thermal treatment to about 500 degrees C. also sharply decreases the surfactant adsorption of the recovered fly ash even though most of the carbon remains intact. Also, thermal treatment to about 800 degrees C. under these same oxidative conditions shows a sharp decrease in surfactant adsorption of the recovered fly ash due to the fact that the carbon has been removed. This experiment simulates the various "carbon burnout" methods and is not a claim in this method. The present invention provides a thermal method of deactivating high carbon fly ash toward adsorption of AEAs while retaining the fly ash carbon. The fly ash can be used, for example, as a partial Portland cement replacement in air-entrained concrete, in conductive and other concretes, and for other applications.

La Count, Robert B; Baltrus, John P; Kern, Douglas G

2013-05-14T23:59:59.000Z

46

Passive solar heating and analysis  

SciTech Connect (OSTI)

Passive solar heating experience and analysis techniques are reviewed with emphasis on annual auxiliary heat requirement. The role of analysis in the design of passive solar buildings is discussed. Selected results for existing systems are presented for locations in Saudi Arabia and climatically similar locations in the US. Advanced systems in the research stage are described.

Jones, R.W.

1984-01-01T23:59:59.000Z

47

Temperature initiated passive cooling system  

DOE Patents [OSTI]

A passive cooling system for cooling an enclosure only when the enclosure temperature exceeds a maximum standby temperature comprises a passive heat transfer loop containing heat transfer fluid having a particular thermodynamic critical point temperature just above the maximum standby temperature. An upper portion of the heat transfer loop is insulated to prevent two phase operation below the maximum standby temperature. 1 fig.

Forsberg, C.W.

1994-11-01T23:59:59.000Z

48

MODELING PASSIVE SOLAR BUILDINGS WITH HAND CALCULATIONS  

E-Print Network [OSTI]

time of day for a passive solar house under four differentresponse function for a passive solar house would begin toB(w)/A(w). A good passive solar house w i l l have B/A large

Goldstein, David B.

2011-01-01T23:59:59.000Z

49

Passive magnetic bearing system  

DOE Patents [OSTI]

An axial stabilizer for the rotor of a magnetic bearing provides external control of stiffness through switching in external inductances. External control also allows the stabilizer to become a part of a passive/active magnetic bearing system that requires no external source of power and no position sensor. Stabilizers for displacements transverse to the axis of rotation are provided that require only a single cylindrical Halbach array in its operation, and thus are especially suited for use in high rotation speed applications, such as flywheel energy storage systems. The elimination of the need of an inner cylindrical array solves the difficult mechanical problem of supplying support against centrifugal forces for the magnets of that array. Compensation is provided for the temperature variation of the strength of the magnetic fields of the permanent magnets in the levitating magnet arrays.

Post, Richard F.

2014-09-02T23:59:59.000Z

50

Violating privacy through walls by passive monitoring of radio windows  

Science Journals Connector (OSTI)

We investigate the ability of an attacker to passively use an otherwise secure wireless network to detect moving people through walls. We call this attack on privacy of people a "monitoring radio windows" (MRW) attack. We design and implement the MRW ... Keywords: line crossing, radio window, signal strength, wifi

Arijit Banerjee; Dustin Maas; Maurizio Bocca; Neal Patwari; Sneha Kasera

2014-07-01T23:59:59.000Z

51

The European Passive House Concept  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

The European Passive House Concept The European Passive House Concept Speaker(s): Nabih Tahan Date: January 13, 2009 - 12:00pm Location: 90-3122 Nabih will describe the European Passive House concept and modern, home manufacturing methods in Austria. The Passive House is a European standard for a specific way to build a house that consumes very little energy, is comfortable and has a high indoor air quality. It is a cost effective method of building, where conventional heating systems are eliminated, and their cost is reinvested in super insulation, super air-tightness and heat recovery. Free heat generated from electrical and gas appliances and lighting is recycled through the heat recovery ventilator. This results in buildings that consume 80% to 90% less heating energy while constantly

52

Experimental studies on passive dynamic bipedal walking  

Science Journals Connector (OSTI)

Passive dynamic walking is a gait developed, partially or in whole, by the energy provided by gravity. The research on passive dynamic bipedal walking helps create an understanding of walking mechanics. Moreover, the experimental passive dynamic research ... Keywords: Design and testing, Experiment, Gait patterns, Passive dynamic walking, Treadmill

Kazi Rushdi, Derek Koop, Christine Q. Wu

2014-04-01T23:59:59.000Z

53

Communication error detection using facial expressions  

E-Print Network [OSTI]

Automatic detection of communication errors in conversational systems typically rely only on acoustic cues. However, perceptual studies have indicated that speakers do exhibit visual communication error cues passively ...

Wang, Sy Bor, 1976-

2008-01-01T23:59:59.000Z

54

R&D 100: Lab Researchers Contribute to Public Safety | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

R&D 100: Lab Researchers Contribute to Public Safety R&D 100: Lab Researchers Contribute to Public Safety R&D 100: Lab Researchers Contribute to Public Safety Addthis Multi-Mode Passive Detection System 1 of 3 Multi-Mode Passive Detection System A truck passes through a multi-mode passive detection system (MMPDS) at a port of entry. The MMPDS is a scanning device that uses muons, subatomic particles created by the interaction between cosmic rays from deep space and molecules in the upper atmosphere, to quickly detect unshielded to heavily shielded nuclear and radiological threats, explosives and other contraband. Image: Courtesy of Los Alamos National Laboratory MiniMax: Digital X-Ray Imaging System 2 of 3 MiniMax: Digital X-Ray Imaging System MiniMAX is a completely self-contained, lightweight, compact and portable

55

MODELING PASSIVE SOLAR BUILDINGS WITH HAND CALCULATIONS  

E-Print Network [OSTI]

and are inaccurate i n modeling buildings with large solarDivision Modeling Passive Solar Buildings with Hand8583 EEB-W-79-05 MODELING PASSIVE SOLAR BUILDINGS WITH HAND

Goldstein, David B.

2011-01-01T23:59:59.000Z

56

HCI gesture tracking using wearable passive tags  

E-Print Network [OSTI]

In this thesis. a wearable system is developed to track hand gestures with passive RFID sensor tags. This system was composed of an ultra-high frequency reader and small, passive, finger-worn tags powered by scavenged RFID ...

Bainbridge, Rachel M

2010-01-01T23:59:59.000Z

57

Building and marketing passive solar homes  

SciTech Connect (OSTI)

For passive solar to reach its potential as a force in dealing with the nation's energy problems, it must be adapted by the mainstream of the housing industry. This will only happen if passive solar can become part of the answer to the real issues concerning marketability and affordability that face the housing industry in the 80's. This paper discusses the forces which can be brought to bear to expedite the movement of passive solar into the housing industry and how passive solar can become an instrumental part in creating marketability in housing. It describes design concepts and marketing techniques that are compatible with passive solar.

Leach, J.W.

1981-01-01T23:59:59.000Z

58

Evaluation of Alternate Surface Passivation Methods (U)  

SciTech Connect (OSTI)

Stainless steel containers were assembled from parts passivated by four commercial vendors using three passivation methods. The performance of these containers in storing hydrogen isotope mixtures was evaluated by monitoring the composition of initially 50% H{sub 2} 50% D{sub 2} gas with time using mass spectroscopy. Commercial passivation by electropolishing appears to result in surfaces that do not catalyze hydrogen isotope exchange. This method of surface passivation shows promise for tritium service, and should be studied further and considered for use. On the other hand, nitric acid passivation and citric acid passivation may not result in surfaces that do not catalyze the isotope exchange reaction H{sub 2} + D{sub 2} {yields} 2HD. These methods should not be considered to replace the proprietary passivation processes of the two current vendors used at the Savannah River Site Tritium Facility.

Clark, E

2005-05-31T23:59:59.000Z

59

Detection threshold  

Science Journals Connector (OSTI)

Detection threshold or recognition differential is defined as the signal?to?noise ratio at the beamformer output required for detection. An introduction to this topic is provided in Uricks’ Principles of Underwater Sound. The subject is frequently a source of confusion due to the multiple possible definitions of signal?to?noise ratio the effects of nonlinearities in the signal processing and the overall complexity of the sonar operators job of signal recognition in real?world clutter. In this paper a review of the basic theory of mathematical relationships are provided followed by a discussion of practical limitations in applying simple formulas to performance predictions. The relationships of detection threshold to the signal?processing approach and background?noise statistics are discussed. Active sonars in both noise and reverberation as well as passive sonars involving energy detection spectral analysis and cross correlators are discussed.

Henry Cox

1999-01-01T23:59:59.000Z

60

Passive Solar Home Design | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Passive Solar Home Design Passive Solar Home Design Passive Solar Home Design June 24, 2013 - 7:18pm Addthis This North Carolina home gets most of its space heating from the passive solar design, but the solar thermal system (top of roof) supplies both domestic hot water and a secondary radiant floor heating system. | Photo courtesy of Jim Schmid Photography. This North Carolina home gets most of its space heating from the passive solar design, but the solar thermal system (top of roof) supplies both domestic hot water and a secondary radiant floor heating system. | Photo courtesy of Jim Schmid Photography. What does this mean for me? A passive solar home means a comfortable home that gets at least part of its heating, cooling, and lighting energy from the sun. How does it work?

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Guide to Passive Solar Home Design  

Broader source: Energy.gov (indexed) [DOE]

Elements of Passive Solar Design Elements of Passive Solar Design To design a completely passive solar home, you need to incorporate what are considered the five elements of passive solar design: 1. Aperture (Windows) - Windows should face within 30 degrees of true south, and during winter months they should not be shaded from 9 a.m. to 3 p.m. The windows in living areas should face south, while the windows in bedrooms should face north. In colder climates, reduce the window area

62

Rules of thumb for passive solar heating  

SciTech Connect (OSTI)

Rules of thumb are given for passive solar systems for: (1) sizing solar glazing for 219 cities, (2) sizing thermal storage mass, and (3) building orientation.

Balcomb, J.D.

1980-01-01T23:59:59.000Z

63

Fear and loathing of the English passive  

Science Journals Connector (OSTI)

Abstract Writing advisers have been condemning the English passive since the early 20th century. I provide an informal but comprehensive syntactic description of passive clauses in English, and then exhibit numerous published examples of incompetent criticism in which critics reveal that they cannot tell passives from actives. Some seem to confuse the grammatical concept with a rhetorical one involving inadequate attribution of agency or responsibility, but not all examples are thus explained. The specific stylistic charges leveled against the passive are entirely baseless. The evidence demonstrates an extraordinary level of grammatical ignorance among educated English language critics.

Geoffrey K. Pullum

2014-01-01T23:59:59.000Z

64

Monitoring and Modeling of Passive Solar Buildings  

Science Journals Connector (OSTI)

Amongst, the major barriers for commercialization of passive solar technologies for buildings is the lack of quantitative performance information. Further development of these technologies requires even more d...

Sukhbir Mahajan

1987-01-01T23:59:59.000Z

65

Definition: Passive Solar | Open Energy Information  

Open Energy Info (EERE)

Passive Solar Passive Solar Jump to: navigation, search Dictionary.png Passive Solar Passive Solar techniques include selecting materials with favorable thermal properties, designing spaces that naturally circulate air, and referencing the position of a building to the Sun.[1] View on Wikipedia Wikipedia Definition Solar energy, radiant light and heat from the sun, is harnessed using a range of ever-evolving technologies such as solar heating, solar photovoltaics, solar thermal electricity, solar architecture and artificial photosynthesis. Solar technologies are broadly characterized as either passive solar or active solar depending on the way they capture, convert and distribute solar energy. Active solar techniques include the use of photovoltaic panels and solar thermal collectors to harness the energy.

66

Evaluation of Passive and Active Soot Filters for Removal of...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Passive and Active Soot Filters for Removal of Particulate Emissions from Diesel Engines Evaluation of Passive and Active Soot Filters for Removal of Particulate Emissions from...

67

Optimization of an Advanced Passive/Active Diesel Emission Control...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

an Advanced PassiveActive Diesel Emission Control System Optimization of an Advanced PassiveActive Diesel Emission Control System Evaluation of PM exhaust aftertreatment...

68

Passive Solar Building Design and Solar Thermal Space Heating...  

Broader source: Energy.gov (indexed) [DOE]

Passive Solar Building Design and Solar Thermal Space Heating Webinar Passive Solar Building Design and Solar Thermal Space Heating Webinar Watch a recording of National Renewable...

69

A Revealing Look Inside Passive and Active DPF Regeneration:...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

A Revealing Look Inside Passive and Active DPF Regeneration: In-Situ Optical Analysis of Ash Formation and Transport A Revealing Look Inside Passive and Active DPF Regeneration:...

70

Los Alamos National Laboratory passive solar program  

SciTech Connect (OSTI)

Progress in passive solar tasks performed at the Los Alamos National Laboratory for FY-81 is documented. A third volume of the Passive Solar Design Handbook is nearly complete. Twenty-eight configurations of sunspaces were studied using the solar load ratio method of predicting performance; the configuration showing best performance is discussed. The minimum level of insolation needed to generate convective flow in the thermosiphon test rig is noted and measured. Information is also included on test room performance, off-peak auxiliary electric heating for a passive home, free convection experiment, monitored buildings, and technical support to the US Department of Energy.

Neeper, D.A.

1981-01-01T23:59:59.000Z

71

Passive Seismic Techniques | Open Energy Information  

Open Energy Info (EERE)

Passive Seismic Techniques Passive Seismic Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Passive Seismic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(4) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Seismic Techniques Parent Exploration Technique: Seismic Techniques Information Provided by Technique Lithology: Rock unit density influences elastic wave velocities. Stratigraphic/Structural: Structural geology- faults, folds, grabens, horst blocks, sedimentary layering, discontinuities, etc. Hydrological: Combining compressional and shear wave results can indicate the presence of fluid saturation in the formation. Thermal: High temperatures and pressure impact the compressional and shear wave velocities.

72

The Soil Moisture Active Passive (SMAP) Mission  

E-Print Network [OSTI]

The Soil Moisture Active Passive (SMAP) mission is one of the first Earth observation satellites being developed by NASA in response to the National Research Council's Decadal Survey. SMAP will make global measurements of ...

Entekhabi, Dara

73

A self-regulated passive fuel-feed system for passive direct methanol fuel cells.  

E-Print Network [OSTI]

??Unlike active direct methanol fuel cells (DMFCs) that require liquid pumps and gas compressors to supply reactants, the design of passive DMFCs eliminates these ancillary… (more)

Chan, Yeuk Him

2007-01-01T23:59:59.000Z

74

International comparison of passive solar simulation codes  

SciTech Connect (OSTI)

Two software-software comparisons of passive solar simulation codes have been conducted by the Passive Solar Applications Group of the Committee on the Challenges to Modern Society. These exercises have involved the simulation of hypothetical Trombe wall and direct gain buildings located in Madison, Wisconsin. The countries that have participated in the exercise include Canada, Denmark, France, and the United States. All results available at the time of writing are discussed in this report.

Wray, W.O.

1980-01-01T23:59:59.000Z

75

Convective Cooling and Passive Stack Improvements in Motors (Presentation)  

SciTech Connect (OSTI)

This presentation discusses current research at NREL in convective cooling and passive stack improvements in motors.

Bennion, K.

2014-06-01T23:59:59.000Z

76

A program for passively tracking a target using an array of sensors  

SciTech Connect (OSTI)

The problem of passively tracking a moving signal source has importance in a variety of applications such as radar, sonar, seismology, and radio astronomy. In many applications, only limited information is available about the signal source. It will be assumed here that only the signals which are detected by the sensors and the velocity of the source signal are known. The objective of this document is to present a program which passively tracks a target using an array of sensors. This program is available in MATLAB, version 3.5. The algorithm which is implemented consists of three main parts: time delay estimation, passive localization, and data post processing. Each of these parts are discussed, and the mathematical foundation for their solution given. Following, this the organization of the program is presented, and an example of its usage is given.

Buhl, M.R.

1993-01-01T23:59:59.000Z

77

UTag: Long-range Ultra-wideband Passive Radio Frequency Tags  

SciTech Connect (OSTI)

Long-range, ultra-wideband (UWB), passive radio frequency (RF) tags are key components in Radio Frequency IDentification (RFID) system that will revolutionize inventory control and tracking applications. Unlike conventional, battery-operated (active) RFID tags, LLNL's small UWB tags, called 'UTag', operate at long range (up to 20 meters) in harsh, cluttered environments. Because they are battery-less (that is, passive), they have practically infinite lifetimes without human intervention, and they are lower in cost to manufacture and maintain than active RFID tags. These robust, energy-efficient passive tags are remotely powered by UWB radio signals, which are much more difficult to detect, intercept, and jam than conventional narrowband frequencies. The features of long range, battery-less, and low cost give UTag significant advantage over other existing RFID tags.

Dowla, F

2007-03-14T23:59:59.000Z

78

Passive-solar homes for Texas  

SciTech Connect (OSTI)

Acceptance of passive-solar technologies has been slow within the conventional building trades in Texas because it is a common misconception that solar is expensive, and data on local applications is severely limited or nonexistent. It is the purpose of this solar development to move passive-solar design into the mainstream of public acceptance by helping to overcome and eliminate these barriers. Specifically, the goal is to develop a set of regional climatic building standards to help guide the conventional building trade toward the utilization of soft-energy systems which will reduce overall consumption at a price and convenience most Texans can afford. To meet this objective, eight sample passive-design structures are presented. These designs represent state-of-the-art regional applications of passive-solar space conditioning. The methodology used in the passive-solar design process included: analysis of regional climatic data; analysis of historical regional building prototypes; determination of regional climatic design priorities and assets; prototypical design models for the discretionary housing market; quantitative thermal analysis of prototypical designs; and construction drawings of building prototypes.

Garrison, M.

1982-01-01T23:59:59.000Z

79

Massachusetts multi-family passive solar program  

SciTech Connect (OSTI)

The Massachusetts Executive Office of Energy Resources (EOER), in cooperation with the US Department of Energy, the State Executive Office of Communities and Development, and Local Housing Authorities is putting passive solar and special energy conservation features into new multi-family housing for the elderly throughout the Commonwealth. The Multi-Family Passive Solar Program provides design and technical assistance to the housing agencies, project architects, and engineers, and uses funds from EOER's $25 million Energy Bond Program to pay for incremental conservation and solar costs. In October 1980, 17 projects including over 400 passive solar heated units received awards for design and construction totalling $1.5 million. Many of them are already under construction. The projects represent a wide range of building types (from suburban cottages to mid-rise elevator buildings) and structural systems (from light wood to steel to concrete frames), and respond to a variety of real world constraints which make them non-optimal. Solar systems include direct gain, Trombe walls, passive domestic water heating, and a variety of sunspace configurations, some using remote storage. Additional projects are now in design development, plans for monitoring are underway, and a case study book outlining our experience and recommendations for multi-family passive solar design is being drafted.

Rouse, R.E.

1981-01-01T23:59:59.000Z

80

Definition: Passive solar heating | Open Energy Information  

Open Energy Info (EERE)

solar heating solar heating Jump to: navigation, search Dictionary.png Passive solar heating Using the sun's energy to heat a building; the windows, walls, and floors can be designed to collect, store, and distribute solar energy in the form of heat in the winter (and also to reject solar heat in the summer).[1] View on Wikipedia Wikipedia Definition Related Terms Daylighting, Passive Solar, heat, energy References ↑ http://www.energysavers.gov/your_home/designing_remodeling/index.cfm/mytopic=10250 Retrie LikeLike UnlikeLike You like this.Sign Up to see what your friends like. ved from "http://en.openei.org/w/index.php?title=Definition:Passive_solar_heating&oldid=480581" Category: Definitions What links here Related changes Special pages Printable version Permanent link

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Passive Cooling System for a Vehicle  

DOE Patents [OSTI]

A passive cooling system for a vehicle (114) transfers heat from an overheated internal component, for example, an instrument panel (100), to an external portion (116) of the vehicle (114), for example, a side body panel (126). The passive cooling system includes one or more heat pipes (112) having an evaporator section (118) embedded in the overheated internal component and a condenser section (120) at the external portion (116) of the vehicle (114). The evaporator (118) and condenser (120) sections are in fluid communication. The passive cooling system may also include a thermally conductive film (140) for thermally connecting the evaporator sections (118) of the heat pipes (112) to each other and to the instrument panel (100).

Hendricks, T. J.; Thoensen, T.

2005-11-15T23:59:59.000Z

82

Heterojunction solar cell with passivated emitter surface  

DOE Patents [OSTI]

A high-efficiency heterojunction solar cell is described wherein a thin emitter layer (preferably Ga[sub 0.52]In[sub 0.48]P) forms a heterojunction with a GaAs absorber layer. A passivating window layer of defined composition is disposed over the emitter layer. The conversion efficiency of the solar cell is at least 25.7%. The solar cell preferably includes a passivating layer between the substrate and the absorber layer. An anti-reflection coating is preferably disposed over the window layer. 1 fig.

Olson, J.M.; Kurtz, S.R.

1994-05-31T23:59:59.000Z

83

Thermal layering: a passive solar design strategy  

SciTech Connect (OSTI)

SOLARGREEN was the author's entry into the US Department of Housing and Urban Development's Passive Solar Residential Design Competition. The objective of the design was to develop a low-cost, innovative passive solar heating and cooling system as part of a marketable, aesthetically pleasing dwelling that could be easily constructed using existing building practices. The basic design is a three-bedroom, two-story, 1600 square foot home with a solarium that serves as both a solar collector and a food-producing greenhouse. The entry received a design award and five construction awards in the competition.

Moore, F.

1980-01-01T23:59:59.000Z

84

Use of passive sampling devices to determine soil contaminant concentrations  

SciTech Connect (OSTI)

The effective remediation of contaminated sites requires accurate identification of chemical distributions. A rapid sampling method using passive sampling devices (PSDs) can provide a thorough site assessment. We have been pursuing their application in terrestrial systems and have found that they increase the ease and speed of analysis, decrease solvent usage and overall cost, and minimize the transport of contaminated soils. Time and cost savings allow a higher sampling frequency than is generally the case using traditional methods. PSDs have been used in the field in soils of varying physical properties and have been successful in estimating soil concentrations ranging from 1 {mu}g/kg (parts per billion) to greater than 200 mg/kg (parts per million). They were also helpful in identifying hot spots within the sites. Passive sampling devices show extreme promise as an analytical tool to rapidly characterize contaminant distributions in soil. There are substantial time and cost savings in laboratory personnel and supplies. By selectively excluding common interferences that require sample cleanup, PSDs can be retrieved from the field and processed rapidly (one technician can process approximately 90 PSDs in an 8-h work day). The results of our studies indicate that PSDs can be used to accurately estimate soil contaminant concentrations and provide lower detection limits. Further, time and cost savings will allow a more thorough and detailed characterization of contaminant distributions. 13 refs., 4 figs., 2 tabs.

Johnson, K.A. [Clemson Univ., Pendleton, SC (United States); [Washington State Univ., Richland, WA (United States); Hooper, M.J. [Clemson Univ., Pendleton, SC (United States); Weisskopf, C.P. [Washington State Univ., Richland, WA (United States)

1996-12-31T23:59:59.000Z

85

Passive solar energy in Washington: results of the Washington passive solar design/build competition  

SciTech Connect (OSTI)

The Washington Passive Solar Design/Build Competition was held in an effort to encourage the design, construction, and marketing of moderately priced passive solar homes in Washington state. Four categories were established, including single and multi-family, new design and remodel. A number of commonly made thermal mistakes are discussed. Eight winning entries are presented along with four notable entries, for each of which is given an overview of the design, energy conservation measures, passive heating and cooling features, system operation, and thermal performance. (LEW)

Not Available

1982-03-01T23:59:59.000Z

86

Tips: Passive Solar Heating and Cooling | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Tips: Passive Solar Heating and Cooling Tips: Passive Solar Heating and Cooling Tips: Passive Solar Heating and Cooling April 24, 2012 - 4:18pm Addthis Tips: Passive Solar Heating and Cooling Using passive solar design to heat and cool your home can be both environmentally friendly and cost effective. In many cases, your heating costs can be reduced to less than half the cost of heating a typical home. Passive solar design can also help lower your cooling costs. Passive solar cooling techniques include carefully designed overhangs and using reflective coatings on windows, exterior walls, and roofs. Newer techniques include placing large, insulated windows on south-facing walls and putting thermal mass, such as a concrete slab floor or a heat-absorbing wall, close to the windows. A passive solar house requires careful design and siting, which vary by

87

Passive Housing for an Aggressive Region | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Passive Housing for an Aggressive Region Passive Housing for an Aggressive Region Passive Housing for an Aggressive Region July 17, 2012 - 1:59pm Addthis Lynn Meyer Presidential Management Fellow, Office of Energy Efficiency and Renewable Energy Passive is not how I would characterize the D.C. area. Ambitious, passionate, and up for a challenge -- now, that more aptly describes the Capital region and the mission of bringing passive houses to the area. A passive house meets rigorous, voluntary energy efficiency standards and requires little energy for heating or cooling. The construction of passive housing is typically more expensive upfront, but owners can recoup their investment through energy savings. Brothers Eric Lin, an interior designer, and Roger Lin, a former real estate attorney, teamed up to build a high end passive house, which just

88

Tips: Passive Solar Heating and Cooling | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Passive Solar Heating and Cooling Passive Solar Heating and Cooling Tips: Passive Solar Heating and Cooling April 24, 2012 - 4:18pm Addthis Tips: Passive Solar Heating and Cooling Using passive solar design to heat and cool your home can be both environmentally friendly and cost effective. In many cases, your heating costs can be reduced to less than half the cost of heating a typical home. Passive solar design can also help lower your cooling costs. Passive solar cooling techniques include carefully designed overhangs and using reflective coatings on windows, exterior walls, and roofs. Newer techniques include placing large, insulated windows on south-facing walls and putting thermal mass, such as a concrete slab floor or a heat-absorbing wall, close to the windows. A passive solar house requires careful design and siting, which vary by

89

Passive Housing for an Aggressive Region | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Passive Housing for an Aggressive Region Passive Housing for an Aggressive Region Passive Housing for an Aggressive Region July 17, 2012 - 1:59pm Addthis Lynn Meyer Presidential Management Fellow, Office of Energy Efficiency and Renewable Energy Passive is not how I would characterize the D.C. area. Ambitious, passionate, and up for a challenge -- now, that more aptly describes the Capital region and the mission of bringing passive houses to the area. A passive house meets rigorous, voluntary energy efficiency standards and requires little energy for heating or cooling. The construction of passive housing is typically more expensive upfront, but owners can recoup their investment through energy savings. Brothers Eric Lin, an interior designer, and Roger Lin, a former real estate attorney, teamed up to build a high end passive house, which just

90

Building America Whole-House Solutions for Existing Homes: Passive...  

Energy Savers [EERE]

Passive Room-to-Room Air Transfer, Fresno, California (Fact Sheet) Building America Whole-House Solutions for Existing Homes: Passive Room-to-Room Air Transfer, Fresno, California...

91

Submerged passively-safe power plant  

SciTech Connect (OSTI)

The invention as presented consists of a submerged passively-safe power station including a pressurized water reactor capable of generating at least 600 MW of electricity, encased in a double hull vessel, and provides fresh water by using the spent thermal energy in a multistage flash desalination process.

Herring, J.S.

1991-12-31T23:59:59.000Z

92

Passive Supporters of Terrorism and Phase Transitions  

E-Print Network [OSTI]

We discuss some social contagion processes to describe the formation and spread of radical opinions. The dynamics of opinion spread involves local threshold processes as well as mean field effects. We calculate and observe phase transitions in the dynamical variables resulting in a rapidly increasing number of passive supporters. This strongly indicates that military solutions are inappropriate.

August, Friedrich; Delitzscher, Sascha; Hiller, Gerald; Krueger, Tyll

2010-01-01T23:59:59.000Z

93

Passive safety injection system using borated water  

DOE Patents [OSTI]

A passive safety injection system relies on differences in water density to induce natural circulatory flow patterns which help maintain prescribed concentrations of boric acid in borated water, and prevents boron from accumulating in the reactor vessel and possibly preventing heat transfer.

Conway, Lawrence E. (Allegheny, PA); Schulz, Terry L. (Westmoreland, PA)

1993-01-01T23:59:59.000Z

94

Submerged passively-safe power plant  

DOE Patents [OSTI]

The invention as presented consists of a submerged passively-safe power station including a pressurized water reactor capable of generating at least 600 MW of electricity, encased in a double hull vessel, and provides fresh water by using the spent thermal energy in a multistage flash desalination process.

Herring, J. Stephen (Idaho Falls, ID)

1993-01-01T23:59:59.000Z

95

Submerged passively-safe power plant  

DOE Patents [OSTI]

The invention as presented consists of a submerged passively-safe power station including a pressurized water reactor capable of generating at least 600 MW of electricity, encased in a double hull vessel, and provides fresh water by using the spent thermal energy in a multistage flash desalination process. 8 figures.

Herring, J.S.

1993-09-21T23:59:59.000Z

96

Multipurpose active/passive motion compensation system  

SciTech Connect (OSTI)

A microprocessor-controlled active/passive motion compensation system has been developed for deploying a variety of geotechnical in-situ testing devices with mobile drilling rigs from low-cost service vessels. The light-weight rotary heave compensator incorporates a hydraulic motor as the compensator actuator and a servo-controlled closed loop pump to reduce the air storage and power requirements. Unique features of the system are the use of inertial sensors to measure three components of boat motion, the ability to run the system in active/passive or passive modes, and the ability to automatically lower the drillstring at a constant velocity while maintaining motion compensation. Quantitative measurements made during sea trials offshore California yielded motion compensation accuracy approaching 98 percent which is much better than the compensation achieved with passive systems. Results are presented from offshore in-situ testing with a cone penetrometer, a vane shear device, and a suspension PS logger. The system can also be used for other offshore applications.

Sullivan, R.A.; Clements, R.E.; Davenport, M.R.

1984-05-01T23:59:59.000Z

97

Evaluation of passive solar retrofit options  

SciTech Connect (OSTI)

An evaluation framework has been developed which allows for the assessment of the role of passive solar retrofit in the nationwide reduction of conventional fuel use. Three types of analysis are proposed within this framework: the physical/technical capability of the present housing stock to incorporate passive solar retrofit; the economic feasibility of the application of retrofit designs; and the actual market potential or acceptance of these alternative retrofit options. Each type of analysis has specific data requirements and a series of evaluation procedures to help establish estimates of the potential for passive solar retrofit in the present housing stock. The data requirements with their respective sources and evaluation procedures for the first two types of analysis-physical/technical setting and economic feasibility, are examined. A distinction is drawn between community specific case studies and more generalized national assessments. Information derived from these three types of analysis, whether case specific or national in scope, can then be used in an evaluation of potential economic impacts. The establishment of regional economic benefits and costs werve as a measure of the merit or attractiveness of the implementation of a passive solar retrofit program.

Ben-David, S.; Kirchemen, C.; Martin, S.; Noll, S.; Roach, F.

1980-01-01T23:59:59.000Z

98

Passive remote smoke plume opacity sensing: a technique  

SciTech Connect (OSTI)

A new passive technique for the remote measurement of the visual opacity of plumes emerging from smokestacks is presented. It is based on the detection of the attenuation of the polarized component of Rayleigh-scattered background skylight as it traverses a smoke plume. A two-color difference measurement of the polarization of skylight through the plume is compared with a similar measurement of the unattenuated sky-light adjacent to the plume. This method is independent of the intrinsic brightness of the plume resulting from the scattering of sunlight and cancels white-light polarization effects of plume-scattered radiation. A prototype instrument incorporating this method has been successfully field tested on an EPA smoke school generator and a power plant stack plume.

Lilenfeld, P.; Woker, G.; Stern, R.; McVay, L.

1981-03-01T23:59:59.000Z

99

Passive Solar Building Design Basics | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Passive Solar Building Design Basics Passive Solar Building Design Basics Passive Solar Building Design Basics July 30, 2013 - 3:20pm Addthis The difference between a passive solar home and a conventional home is design. Passive solar homes and other buildings are designed to take advantage of the local climate. Passive solar design-also known as climatic design-involves using a building's windows, walls, and floors to collect, store, and distribute solar energy in the form of heat in the winter and reject solar heat in the summer. Learn how passive solar design techniques work. Direct Gain Direct gain is the process by which sunlight directly enters a building through the windows and is absorbed and temporarily stored in massive floors or walls. Indirect Gain Indirect gain is the process by which the sun warms a heat storage

100

Evaluation of Alternate Stainless Steel Surface Passivation Methods  

SciTech Connect (OSTI)

Stainless steel containers were assembled from parts passivated by four commercial vendors using three passivation methods. The performance of these containers in storing hydrogen isotope mixtures was evaluated by monitoring the composition of initially 50% H{sub 2} 50% D{sub 2} gas with time using mass spectroscopy. Commercial passivation by electropolishing appears to result in surfaces that do not catalyze hydrogen isotope exchange. This method of surface passivation shows promise for tritium service, and should be studied further and considered for use. On the other hand, nitric acid passivation and citric acid passivation may not result in surfaces that do not catalyze the isotope exchange reaction H{sub 2} + D{sub 2} {yields} 2HD. These methods should not be considered to replace the proprietary passivation processes of the two current vendors used at the Savannah River Site Tritium Facility.

Clark, Elliot A.

2005-05-31T23:59:59.000Z

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Germanium detector passivated with hydrogenated amorphous germanium  

DOE Patents [OSTI]

Passivation of predominantly crystalline semiconductor devices (12) is provided for by a surface coating (21) of sputtered hydrogenated amorphous semiconductor material. Passivation of a radiation detector germanium diode, for example, is realized by sputtering a coating (21) of amorphous germanium onto the etched and quenched diode surface (11) in a low pressure atmosphere of hydrogen and argon. Unlike prior germanium diode semiconductor devices (12), which must be maintained in vacuum at cryogenic temperatures to avoid deterioration, a diode processed in the described manner may be stored in air at room temperature or otherwise exposed to a variety of environmental conditions. The coating (21) compensates for pre-existing undesirable surface states as well as protecting the semiconductor device (12) against future impregnation with impurities.

Hansen, William L. (Walnut Creek, CA); Haller, Eugene E. (Berkeley, CA)

1986-01-01T23:59:59.000Z

102

Passive heat transfer means for nuclear reactors  

DOE Patents [OSTI]

An improved passive cooling arrangement is disclosed for maintaining adjacent or related components of a nuclear reactor within specified temperature differences. Specifically, heat pipes are operatively interposed between the components, with the vaporizing section of the heat pipe proximate the hot component operable to cool it and the primary condensing section of the heat pipe proximate the other and cooler component operable to heat it. Each heat pipe further has a secondary condensing section that is located outwardly beyond the reactor confinement and in a secondary heat sink, such as air ambient the containment, that is cooler than the other reactor component. Means such as shrouding normally isolated the secondary condensing section from effective heat transfer with the heat sink, but a sensor responds to overheat conditions of the reactor to open the shrouding, which thereby increases the cooling capacity of the heat pipe. By having many such heat pipes, an emergency passive cooling system is defined that is operative without electrical power.

Burelbach, James P. (Glen Ellyn, IL)

1984-01-01T23:59:59.000Z

103

Passive Tracer Gas Methods to Measure  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Experiments to Evaluate and Implement Experiments to Evaluate and Implement Passive Tracer Gas Methods to Measure Ventilation Rates in Homes Melissa Lunden, David Faulkner, Elizabeth Heredia, Sebastian Cohn, Darryl Dickerhoff, Federico Noris, Jennifer Logue, Toshifumi Hotchi, Brett Singer and Max H. Sherman Environmental Energy Technologies Division October 2012 LBNL-5984E 2 Disclaimer: This document was prepared as an account of work sponsored by the United States

104

Passively cooled direct drive wind turbine  

DOE Patents [OSTI]

A wind turbine is provided that passively cools an electrical generator. The wind turbine includes a plurality of fins arranged peripherally around a generator house. Each of the fins being oriented at an angle greater than zero degrees to allow parallel flow of air over the fin. The fin is further tapered to allow a constant portion of the fin to extend beyond the air stream boundary layer. Turbulence initiators on the nose cone further enhance heat transfer at the fins.

Costin, Daniel P. (Chelsea, VT)

2008-03-18T23:59:59.000Z

105

PASSIVE NMIS MEASUREMENTS TO ESTIMATE SHAPE OF PLUTONIUM ASSEMBLIES (SLIDE PRESENTATION)  

SciTech Connect (OSTI)

The purpose of this work is to estimate shape of plutonium assemblies using new signatures acquired by passive NMIS measurements (no external source). Applications include identification of containerized regular shapes of plutonium, identification by shape without template, verification of shape for template initialization, and potential utility for estimating shape of holdup in plutonium processing facilities. To illustrate the technique and test its feasibility, laboratory measurements have been performed with californium spontaneous fission sources as a surrogate for plutonium. Advantages of the technique include the following: passive (requires no external source for plutonium measurements), stationary (no scanning of the assembly is required), penetrative (shape is estimated from neutron emissions), obscurable (spatial resolution can be deliberately degraded by changing detector size and/or timing resolution), inexpensive (majority of NMIS components are commercial products), portable (detection system is transported to the item, not vice versa). It is concluded that passive NMIS measurements can infer the mass of plutonium assemblies: NMIS correlations scale directly with spontaneous fission rate (Pu-240); NMIS correlations scale with fissile mass (Pu-239) and multiplication. New third-order correlations can estimate the shape of fission sources (Pu-240 & Pu-239) from passive measurements. Surrogate measurements of californium spontaneous fission sources have demonstrated the feasibility of this concept. Measurements of various shapes of plutonium are necessary to continue the development of this technique.

MARCH-LEUBA, J.A.; MATTINGLY, J.K.; MIHALCZO, J.T.; PEREZ, R.B.; VALENTINE, T.E.

1998-11-25T23:59:59.000Z

106

Eighth national passive solar conference. Final report  

SciTech Connect (OSTI)

The Eighth National Passive Solar Conference was held near Santa Fe, New Mexico at the Glorieta Conference Center on September 5 to 11, 1983. Nearly 900 people from all across the nation and the world attended the conference. Close to 200 technical papers were presented, 50 solar product exhibits were available; 34 poster sessions were presented; 16 solar workshops were conducted; 10 renowned solar individuals participated in rendezvous sessions; 7 major addresses were delivered; 5 solar home tours were conducted; 2 emerging architecture sessions were held which included 21 separate presentations; and commercial product presentations were given for the first time ever at a national passive solar conference. Peter van Dresser of Santa Fe received the prestigious Passive Solar Pioneer Award, posthumously, from the American Solar Energy Society and Benjamin T. Buck Rogers of Embudo received the prestigious Peter van Dresser Award from the New Mexico Solar Energy Association. This report reviews conference organization, attendance, finances, conference evaluation form results, and includes press coverage samples, selected conference photos courtesy of Marshall Tyler, and a summary with recommendations for future conferences. The Appendices included conference press releases and a report by the New Mexico Solar Industry Development Corporation on exhibits management.

Owen, A.; Zee, R.

1983-12-01T23:59:59.000Z

107

Sound production by white shrimp (Penaeus setiferus) analysis of another crustacean-like sound from the Gulf of Mexico, and the possible use of passive sonar for dedication and stock assessment of shrimp  

E-Print Network [OSTI]

Sound production by white shrimp (Penaeus setiferus) was studied acoustically and behaviorally. Another crustacean-like signal from the Gulf of Mexico was analyzed, and the use of passive sonar for the detection and stock assessment of shrimp...

Berk, Ilona M.

2012-06-07T23:59:59.000Z

108

Passivation-free solid state battery  

DOE Patents [OSTI]

This invention pertains to passivation-free solid-state rechargeable batteries composed of Li{sub 4}Ti{sub 5}O{sub 12} anode, a solid polymer electrolyte and a high voltage cathode. The solid polymer electrolyte comprises a polymer host, such as polyacrylonitrile, poly(vinyl chloride), poly(vinyl sulfone), and poly(vinylidene fluoride), plasticized by a solution of a Li salt in an organic solvent. The high voltage cathode includes LiMn{sub 2}O{sub 4}, LiCoO{sub 2}, LiNiO{sub 2} and LiV{sub 2}O{sub 5} and their derivatives. 5 figs.

Abraham, K.M.; Peramunage, D.

1998-06-16T23:59:59.000Z

109

Passivation-free solid state battery  

DOE Patents [OSTI]

This invention pertains to passivation-free solid-state rechargeable batteries composed of Li.sub.4 Ti.sub.5 O.sub.12 anode, a solid polymer electrolyte and a high voltage cathode. The solid polymer electrolyte comprises a polymer host, such as polyacrylonitrile, poly(vinyl chloride), poly(vinyl sulfone), and poly(vinylidene fluoride), plasticized by a solution of a Li salt in an organic solvent. The high voltage cathode includes LiMn.sub.2 O.sub.4, LiCoO.sub.2, LiNiO.sub.2 and LiV.sub.2 O.sub.5 and their derivatives.

Abraham, Kuzhikalail M. (Needham, MA); Peramunage, Dharmasena (Norwood, MA)

1998-01-01T23:59:59.000Z

110

Passive solar concepts for multistory buildings  

SciTech Connect (OSTI)

Multistory buildings long in the east-west direction and short in the north-south direction offer good opportunity for passive solar application. If each unit within the building is designed so that the Solar Savings Fraction is the same, each will respond to the weather the same way and no unit-to-unit heat distribution is needed. A numerical example for Denver is given indicating excellent thermal performance and a several-day thermal response time. Solutions involving distribution of heat from unit to unit are also discussed as well as top-floor and south-wall variations.

Balcomb, J.D.

1982-01-01T23:59:59.000Z

111

Passive solar heating systems design. Final report  

SciTech Connect (OSTI)

In 1979 Dynamic Homes submitted a winning proposal in a Department of Energy passive and hybrid solar manufactured housing competition in the modular construction category. A set of preliminary designs for various housing types (ramblers, split entries, split levels, and two stories) were developed. The split entry designs seemed most feasible. They provided a good product at a price that could be marketable. It was decided to proceed with the split entry designs and three models were developed - two single-family and one duplex. Plans and descriptions are presented.

Not Available

1984-01-01T23:59:59.000Z

112

Category:Passive Seismic Techniques | Open Energy Information  

Open Energy Info (EERE)

has the following 2 subcategories, out of 2 total. M Micro-Earthquake 1 pages T Teleseismic-Seismic Monitoring 1 pages Pages in category "Passive Seismic...

113

Design and control of a passively stabilized multimodal hopping robot  

E-Print Network [OSTI]

Stabilized Multimodal Hopping Robot A Thesis submitted inStabilized Multimodal Hopping Robot by Erica Pantel Masterfor a multimodal hopping robot. The robot harnesses passive

Pantel, Erica

2010-01-01T23:59:59.000Z

114

Passive Air Sampling of Organochlorine Pesticides in Mexico  

Science Journals Connector (OSTI)

Passive Air Sampling of Organochlorine Pesticides in Mexico ... accumulated levels of this insecticide in blood, adipose tissue, and breast milk samples from Mexican women. ...

Fiona Wong; Henry A. Alegria; Terry F. Bidleman; Víctor Alvarado; Felipe Angeles; Alfredo Ávila Galarza; Erick R. Bandala; Idolina de la Cerda Hinojosa; Ignacio Galindo Estrada; Guillermo Galindo Reyes; Gerardo Gold-Bouchot; José Vinicio Macías Zamora; Joaquín Murguía-González; Elias Ramirez Espinoza

2008-12-23T23:59:59.000Z

115

Passive Catalytic Approach to Low Temperature NOx Emission Abatement...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Catalytic Approach to Low Temperature NOx Emission Abatement Passive Catalytic Approach to Low Temperature NOx Emission Abatement Numerically evaluated and optimized proposed...

116

Energy Balance and Thermal Comfort in Passive Solar Housing  

Science Journals Connector (OSTI)

To evaluate the performance of different passive solar dwellings it is necessary to consider not only the thermal performance but also the “comfort performance” of the system.

K. Alder; Ch. Eriksson; A. Faist; N. Morel

1984-01-01T23:59:59.000Z

117

THE MEMODRAMA OF CONFLICT: FROM PASSIVE VICTIM TO ACTIVE HERO...  

Broader source: Energy.gov (indexed) [DOE]

FROM PASSIVE VICTIM TO ACTIVE HERO Conflict stories tend to be melodramatic in their content and structure. In this workshop, we will examine the different characters that...

118

Active and Passive Remote Sensing Diagram | Open Energy Information  

Open Energy Info (EERE)

Diagram Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Active and Passive Remote Sensing Diagram Author National Aeronautics and Space Administration...

119

Passive Catalytic Approach to Low Temperature NOx Emission Abatement  

Broader source: Energy.gov [DOE]

Numerically evaluated and optimized proposed state-of-the-art passive catalytic technology designed to reduce NOx released during vehicle cold start portion of the FTP-75 cycle

120

Passive Ammonia SCR for Lean Burn SIDI Engines  

Broader source: Energy.gov [DOE]

Passive NH3 SCR has been demonstrated as a high efficiency and low cost alternative lean NOx aftertreatment technology for stratified gasoline engines.

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Laser-Induced Breakdown Spectroscopy System Using a Passively Q-Switched Laser  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Laser-Induced Breakdown Spectroscopy System Laser-Induced Breakdown Spectroscopy System Using a Passively Q-Switched Laser Opportunity Research is active on the patent-pending technology, titled "Laser-Induced Breakdown Spectroscopy (LIBS) System Using a Passively Q-Switched Laser." This technology is available for licensing and/or further collaborative research from the U.S. Department of Energy's National Energy Technology Laboratory. Overview Atomic spectroscopy systems such as LIBS are used in many applications where the elemental composition of a solid, liquid or gas sample is desired. In addition, this detection technology has the advantage of providing composition data without sample destruction. In LIBS systems, precise timing and control between the laser and the spectrometer detector are

122

Transcript of "Compressive Passive Millimeter-Wave Imager " video - Argonne  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

System Technologies & Diagnostics > System Technologies & Diagnostics > Multimedia > Compressive Passive Millimeter-Wave Imager > Transcript Multimedia Nuclear Systems Analysis Engineering Analysis Nonproliferation and National Security Detection & Diagnostic Systems Compressive Passive Millimeter-Wave Imager VIDEO TRANSCRIPT Remote Vital Sign Monitoring System Preventing the Worst (by CNN) Engineering Development & Applications Argonne's Nuclear Science & Technology Legacy Other Multimedia Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr System Technologies & Diagnostics Multimedia Bookmark and Share Problems viewing the video in this page? Choose another format/size from the menu below; this video is available in Flash Video Flash, Quicktime video Quicktime or Windows Media video Windows Media format

123

SOME ANALYTIC MODELS OF PASSIVE SOLAR BUILDING PERFORMANCE: A THEORETICAL APPROACH TO THE DESIGN OF ENERGY-CONSERVING BUILDINGS  

E-Print Network [OSTI]

during construction. many passive houses have performed muchif it occurred, the optimwll passive house would likely havephotographs of a passive solar house at First Village in

Goldstein, David Baird

2011-01-01T23:59:59.000Z

124

Efficient Emissions Control for Multi-Mode Lean DI Engines |...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Evaluation ace031parks2011o.pdf More Documents & Publications Hydrocarbon fouling of SCR during Premixed Charge Compression Ignition (PCCI) combustion High Efficiency Clean...

125

Mode Order Converter Using Tapered Multi-mode Interference Couplers  

E-Print Network [OSTI]

, and modes of guided light is essential for flexibility in photonic integrated circuit (PIC) design.3120) Integrated optics devices; (130.2790) Guided waves 1. Introduction Accommodating various sizes, shapes indices. One can define Am0 as the transmission of the fundamental mode in the output guide when exciting

Texas at Austin, University of

126

Efficient Emissions Control for Multi-Mode Lean DI Engines  

Broader source: Energy.gov (indexed) [DOE]

for the U.S. Department of Energy Objectives * Enable efficient lean engine market penetration by meeting emission regulations with efficient, cost effective aftertreatment...

127

Shock induced multi-mode damage in depleted uranium  

SciTech Connect (OSTI)

Recent dynamic damage studies on depleted uranium samples have revealed mixed mode failure mechanisms leading to incipient cracking as well as ductile failure processes. Results show that delamination of inclusions upon compression may provide nucleation sites for damage initiation in the form of crack tip production. However, under tension the material propagates cracks in a mixed shear localization and mode-I ductile tearing and cracking. Cracks tips appear to link up through regions of severe, shear dominated plastic flow. Shock recovery experiments were conducted on a 50 mm single stage light gas gun. Serial metallographic sectioning was conducted on the recovered samples to characterize the bulk response of the sample. Experiments show delaminated inclusions due to uniaxial compression without damage propagation. Further results show the propagation of the damage through tensile loading to the incipient state, illustrating ductile processes coupled with mixed mode-I tensile ductile tearing, shear localization, and mode-I cracking in depleted uranium.

Koller, Darcie D [Los Alamos National Laboratory; Cerreta, Ellen K [Los Alamos National Laboratory; Gray, Ill, George T [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

128

Low-Cost Manufacturable Microchannel Systems for Passive  

E-Print Network [OSTI]

for use in fuel cell systems need development in order to achieve cost targets. Low-cost, highLow-Cost Manufacturable Microchannel Systems for Passive PEM Water Management IIPS Number 16910 LowLow--CostCost;2 Project objective: Create a low cost and passive PEM water management system Project objective

129

PAP: A Privacy and Authentication Protocol for Passive RFID Tags  

E-Print Network [OSTI]

PAP: A Privacy and Authentication Protocol for Passive RFID Tags Alex X. Liu LeRoy A. Bailey for RFID tags is necessary to ensure the privacy and authentication between each tag and their reader. In order to accomplish this, we propose PAP, a privacy and authentication protocol for passive RFID tags

Liu, Alex X.

130

Long Range Passive UHF RFID System Using HVAC Ducts  

E-Print Network [OSTI]

INVITED P A P E R Long Range Passive UHF RFID System Using HVAC Ducts To provide a potential communications channel, HVAC ducts can function as electromagnetic waveguides; a 30-m read range has been-conditioning (HVAC) ducts as a potential communication channel between passive ultrahigh-frequency (UHF) radio

Hochberg, Michael

131

Energy and air quality implications of passive stack ventilation in residential buildings  

E-Print Network [OSTI]

scaling the passive stack diameter with house size (floora single-story house ventilated by a passive stack with andTable 1: Passive stack diameters scaling with house size

Mortensen, Dorthe Kragsig

2011-01-01T23:59:59.000Z

132

Energy Revolving Loan Fund - Passive Solar | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Revolving Loan Fund - Passive Solar Revolving Loan Fund - Passive Solar Energy Revolving Loan Fund - Passive Solar < Back Eligibility Agricultural Institutional Nonprofit Savings Category Heating & Cooling Commercial Heating & Cooling Solar Heating Maximum Rebate $15,000 Program Info Funding Source American Recovery and Reinvestment Act of 2009 (ARRA) State Michigan Program Type State Loan Program Rebate Amount $5,000-$15,000 Provider Department of Energy, Labor and Economic Growth In January 2010, Michigan enacted the Public Act 242 of 2009, which established the Energy Efficiency and Renewable Energy Revolving Loan Fund Program. The Passive Solar Systems portion of the loan program is available to family farms and non-profits located in Michigan. Under this program, a passive solar system is defined as "a structure which can extend the

133

DRAFT INTERIM REPORT: NATIONAL PROGRAM PLAN FOR PASSIVE AND HYBRID SOLAR HEATING AND COOLING  

E-Print Network [OSTI]

development of passive solar technology. The tasks have beencommercialization of solar energy technology, Certainpast building technology innovations and passive solar and

Authors, Various

2012-01-01T23:59:59.000Z

134

E-Print Network 3.0 - atopy passive smoking Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

the design objective was to use passive... buildings - the Client's view 4 Control strategies for passive buildings 5 Windows - the Key to Low Energy... of the compact form...

135

Work Function Homogeneity of Monolayer Passivated ITO Surfaces for Organic Solar Cells  

Science Journals Connector (OSTI)

The ITO transparent electrode surface is passivated either by organic quinoline molecules or by ions of periodic and phosphoric acids for organic solar cells. Passivated surfaces are...

Rusu, Marin; Johnev, Boyan; Streicher, Ferdinand; Barreau, Nicolas; Vogel, Mirko; Glatzel, Thilo; Sadewasser, Sascha; Lux-Steiner, Martha Ch; Fostiropoulos, Konstantinos

136

The Water Wall: A Passive Solar Collection and Thermal Storage Device for Supplementary Radiant Heating.  

E-Print Network [OSTI]

??Through the implementation of passive solar building systems, suburbia could take a fresh new step forward toward a progressively more sustainable direction. Making passive solar… (more)

Noseck, Rhett Roman

2013-01-01T23:59:59.000Z

137

FIRING STABILITY OF SiNy / SiNx SURFACE PASSIVATION STACKS FOR CRYSTALLINE SILICON SOLAR CELLS  

E-Print Network [OSTI]

to passivate the phosphorous-diffused emitter at the front. The passivation of these SiNx films deposited

138

Structural algorithm to reservoir reconstruction using passive seismic data (synthetic example)  

Science Journals Connector (OSTI)

Using of passive seismic observations to detect a reservoir is a new direction of prospecting and exploration of hydrocarbons. In order to identify thin reservoir model we applied the modification of Gaussian elimination method in conditions of incomplete synthetic data. Because of the singularity of a matrix conventional method does not work. Therefore structural algorithm has been developed by analyzing the given model as a complex model. Numerical results demonstrate of its advantage compared with usual way of solution. We conclude that the gas reservoir is reconstructed by retrieving of the image of encasing shale beneath it.

2012-01-01T23:59:59.000Z

139

Indirect passive cooling system for liquid metal cooled nuclear reactors  

DOE Patents [OSTI]

A liquid metal cooled nuclear reactor having a passive cooling system for removing residual heat resulting from fuel decay during reactor shutdown. The passive cooling system comprises a plurality of partitions surrounding the reactor vessel in spaced apart relation forming intermediate areas for circulating heat transferring fluid which remove and carry away heat from the reactor vessel. The passive cooling system includes a closed primary fluid circuit through the partitions surrounding the reactor vessel and a partially adjoining secondary open fluid circuit for carrying transferred heat out into the atmosphere.

Hunsbedt, Anstein (Los Gatos, CA); Boardman, Charles E. (Saratoga, CA)

1990-01-01T23:59:59.000Z

140

Low-Threshold Surface-Passivated Photonic Crystal Nanocavity Laser  

E-Print Network [OSTI]

The efficiency and operating range of a photonic crystal laser is improved by passivating the InGaAs quantum well (QW) gain medium and GaAs membrane using an (NH4)S treatment. The passivated laser shows a four-fold reduction in nonradiative surface recombination rate, resulting in a four-fold reduction in lasing threshold. A three-level carrier dynamics model explains the results and shows that lasing threshold is as much determined by surface recombination losses as by the cavity quality factor (Q). Surface passivation therefore appears crucial in operating such lasers under practical conditions.

Dirk Englund; Hatice Altug; Jelena Vuckovic

2007-03-21T23:59:59.000Z

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Passive solar in the United States: 1976-1986  

SciTech Connect (OSTI)

A decade of experience in passive solar development in the United States is reviewed. More than 200,000 residential and 15,000 institutional and commercial passive solar buildings have been constructed since 1976. The evolution of the program through its peak in 1980 to the present is described. Methods of performance prediction and evaluation are discussed including analysis methods, design tools, test modules and monitored buildings. Results of the monitoring show excellent performance, generally in agreement with the analysis, for both residences and larger buildings. Passive practice is analyzed and problems are discussed. The current research program is described. Potential savings are estimated.

Balcomb, J D

1987-01-01T23:59:59.000Z

142

An approach for assessing ALWR passive safety system reliability  

SciTech Connect (OSTI)

Many advanced light water reactor designs incorporate passive rather than active safety features for front-line accident response. A method for evaluating the reliability of these passive systems in the context of probabilistic risk assessment has been developed at Sandia National Laboratories. This method addresses both the component (e.g. valve) failure aspect of passive system failure, and uncertainties in system success criteria arising from uncertainties in the system's underlying physical processes. These processes provide the system's driving force; examples are natural circulation and gravity-induced injection. This paper describes the method, and provides some preliminary results of application of the approach to the Westinghouse AP600 design.

Hake, T M

1991-01-01T23:59:59.000Z

143

Technologies for detection of nuclear materials  

SciTech Connect (OSTI)

Detection of smuggled nuclear materials at transit points requires monitoring unknown samples in large closed packages. This review contends that high-confidence nuclear-material detection requires induced fission as the primary mechanism, with passive radiation screening in a complementary role. With the right equipment, even small quantities of nuclear materials are detectable with a high probability at transit points. The equipment could also be linked synergistically with detectors of other contrabond. For screening postal mail and packages, passive monitors are probably more cost-effective. When a suspicious item is detected, a single active probe could then be used. Until active systems become mass produced, this two-stage screening/interrogation role for active/passive equipment is more economic for cargo at border crossings. For widespread monitoring of nuclear smuggling, it will probably be necessary to develop a system for simultaneously detecting most categories of contraband, including explosives and illicit drugs. With control of nuclear materials at known storage sites being the first line of defense, detection capabilities at international borders could establish a viable second line of defense against smuggling.

DeVolpi, A.

1996-03-30T23:59:59.000Z

144

Developing a comprehensive software environment for passive solar design  

E-Print Network [OSTI]

This thesis is a journal which describes the thoughts and decisions leading up to the final design of a comprehensive software environment for passive solar design. The main purpose of this writing is to convey why a ...

Lotz, Steven E

1985-01-01T23:59:59.000Z

145

The NASA Soil Moisture Active Passive (SMAP) mission: Overview  

E-Print Network [OSTI]

The Soil Moisture Active Passive (SMAP) mission is one of the first Earth observation satellites being developed by NASA in response to the National Research Council's Decadal Survey. Its mission design consists of L-band ...

O'Neill, Peggy

146

Design of double passive modulated mode-locked lasers  

SciTech Connect (OSTI)

A set of equations is obtained that allow the determination of the optimum values for the laser parameters in order to obtain perfect mode-locking by double passive modulation. The double modulation consists of a fast saturable absorber and a passive loss proportional to the mean intensity in the cavity provided by a passively driven electro-optic modulator. The stochastic nature of the emission of conventional passive modulated systems is eliminated if the correct values of the modulation parameters are chosen as predicted by the equations presented here. The predictions given by the equations were compared with previous numerical computations in order to check the validity of certain approximations used. Experimental results obtained confirm the predictions given by said equations.

Martinez, O.E.

1983-02-01T23:59:59.000Z

147

A Semi-Passive Containment Cooling System Conceptual Design  

E-Print Network [OSTI]

The objective of this project was to investigate a passive containment cooling system (PCCS) for the double concrete containment of the Korean Next Generation Reactor (KNGR). Two conceptual PCCS designs: the thermosyphon ...

Liu, H.

148

Graphene passively Q-switched two-micron fiber lasers  

Science Journals Connector (OSTI)

We demonstrate a passively Q-switched thulium fiber laser, using a graphene-based saturable absorber. The laser is based on an all-fiber ring cavity and produces ~2.3?s pulses at...

Wang, Fengqiu; Torrisi, Felice; Jiang, Zhe; Popa, Daniel; Hasan, Tawfique; Sun, Zhipei; Cho, Wonbae; Ferrari, Andrea C

149

Cladding-pumped passive harmonically mode-locked fiber laser  

Science Journals Connector (OSTI)

A passive harmonically mode-locked fiber laser cladding pumped by a broad-area diode-laser array is described. Harmonic mode locking is obtained in a frequency range from 33.3 to 128.6...

Fermann, M E; Minelly, J D

1996-01-01T23:59:59.000Z

150

Using Passive Solar Design to Save Money and Energy | Department...  

Office of Environmental Management (EM)

a typical home Let's Get Down to the Basics A passive solar home collects heat as the sun shines through south-facing windows and retains it in materials that store heat, known...

151

Development of the Passive Cooling Technique in China  

E-Print Network [OSTI]

With more and more energy and environmental issues, the energy-saving and sustainable development of buildings is of utmost concern to the building industry. Passive cooling techniques can optimally utilize natural resources in order to reduce...

Zhou, J.; Wu, J.; Zhang, G.; Xu, Y.

2006-01-01T23:59:59.000Z

152

Low-energy Passive Solar Residence in Austin, Texas  

E-Print Network [OSTI]

year long optimum indoor comfort in buildings. This research, through a design exercise, intends to verify whether a naturally ventilated house, in hot humid region of Austin, TX, can enhance its passive cooling potential through double?walled wind...

Sau, Arunabha

2010-10-12T23:59:59.000Z

153

Materials selection for thermal comfort in passive solar buildings  

Science Journals Connector (OSTI)

This paper presents the results of a combined analytical, computational, and experimental study of the key parameters for selecting affordable materials and designing for thermal comfort in passive solar build...

J. M. Thomas; S. Algohary; F. Hammad; W. O. Soboyejo

2006-11-01T23:59:59.000Z

154

Measurement of Passive Uptake Rates for Volatile Organic Compounds on  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Measurement of Passive Uptake Rates for Volatile Organic Compounds on Measurement of Passive Uptake Rates for Volatile Organic Compounds on Commercial Thermal Desorption Tubes and the Effect of Ozone on Sampling Title Measurement of Passive Uptake Rates for Volatile Organic Compounds on Commercial Thermal Desorption Tubes and the Effect of Ozone on Sampling Publication Type Report LBNL Report Number LBNL-6257E Year of Publication 2013 Authors Maddalena, Randy L., Amanda Parra, Marion L. Russell, and Wen-Yee Lee Publisher Lawrence Berkeley National Laboratory City Berkeley Keywords indoor air quality, Passive Sampling, Uptake Rates, vocs Abstract Diffusive or passive sampling methods using commercially filled axial-sampling thermal desorption tubes are widely used for measuring volatile organic compounds (VOCs) in air. The passive sampling method provides a robust, cost effective way to measure air quality with time-averaged concentrations spanning up to a week or more. Sampling rates for VOCs can be calculated using tube geometry and Fick's Law for ideal diffusion behavior or measured experimentally. There is evidence that uptake rates deviate from ideal and may not be constant over time. Therefore, experimentally measured sampling rates are preferred. In this project, a calibration chamber with a continuous stirred tank reactor design and constant VOC source was combined with active sampling to generate a controlled dynamic calibration environment for passive samplers. The chamber air was augmented with a continuous source of 45 VOCs ranging from pentane to diethyl phthalate representing a variety of chemical classes and physiochemical properties. Both passive and active samples were collected on commercially filled Tenax TA thermal desorption tubes over an 11-day period and used to calculate passive sampling rates. A second experiment was designed to determine the impact of ozone on passive sampling by using the calibration chamber to passively load five terpenes on a set of Tenax tubes and then exposing the tubes to different ozone environments with and without ozone scrubbers attached to the tube inlet. During the sampling rate experiment, the measured diffusive uptake was constant for up to seven days for most of the VOCs tested but deviated from linearity for some of the more volatile compounds between seven and eleven days. In the ozone experiment, both exposed and unexposed tubes showed a similar decline in terpene mass over time indicating back diffusion when uncapped tubes were transferred to a clean environment but there was no indication of significant loss by ozone reaction.

155

The use of non-destructive passive neutron measurement methods in dismantling and radioactive waste characterization  

SciTech Connect (OSTI)

The cleaning up and dismantling of nuclear facilities lead to a great volume of technological radioactive wastes which need to be characterized in order to be sent to the adequate final disposal or interim storage. The control and characterization can be performed with non-destructive nuclear measurements such as gamma-ray spectrometry. Passive neutron counting is an alternative when the alpha-gamma emitters cannot be detected due to the presence of a high gamma emission resulting from fission or activation products, or when the waste matrix is too absorbing for the gamma rays of interest (too dense and/or made of high atomic number elements). It can also be a complement to gamma-ray spectrometry when two measurement results must be confronted to improve the confidence in the activity assessment. Passive neutron assays involve the detection of spontaneous fission neutrons emitted by even nuclides ({sup 238}Pu, {sup 240}Pu, {sup 242}Pu, {sup 242}Cm, {sup 244}Cm...) and neutrons resulting from ({alpha}, n) reactions with light nuclides (O, F, Be...). The latter is conditioned by the presence of high {alpha}-activity radionuclides ({sup 234}U, {sup 238}Pu, {sup 240}Pu, {sup 241}Am...) and low-Z elements, which depends on the chemical form (metallic, oxide or fluorine) of the plutonium or uranium contaminant. This paper presents the recent application of passive neutron methods to the cleaning up of a nuclear facility located at CEA Cadarache (France), which concerns the Pu mass assessment of 2714 historic, 100 litre radioactive waste drums produced between 1980 and 1997. Another application is the dismantling and decommissioning of an uranium enrichment facility for military purposes, which involves the {sup 235}U and total uranium quantifications in about a thousand, large compressors employed in the gaseous diffusion enrichment process. (authors)

Jallu, F.; Allinei, P. G. [CEA, DEN, Cadarache, Nuclear Measurement Laboratory, F-13108 Saint-Paul-lez-Durance (France); Bernard, P.; Loridon, J. [CEA, DEN, Cadarache, Nuclear Measurement Laboratory, F-13108 Saint-Paul-lez-Durance (France); Soyer, P.; Pouyat, D. [CEA, DEN, Marcoule, DPAD, F-30207 Bagnols-sur-Ceze Cedex (France); Torreblanca, L. [CEA, DEN, Cadarache, LMDE, F-13108 Saint-Paul-lez-Durance (France); Reneleau, A. [AREVA NC, Pierrelatte, DDAC/ESD, BP16, F-26701 Pierrelatte Cedex (France)

2011-07-01T23:59:59.000Z

156

Solar air-conditioning-active, hybrid and passive  

SciTech Connect (OSTI)

After a discussion of summer air conditioning requirements in the United States, active, hybrid, and passive cooling systems are defined. Active processes and systems include absorption, Rankine cycle, and a small variety of miscellaneous systems. The hybrid solar cooling and dehumidification technology of desiccation is covered as well as evaporative cooling. The passive solar cooling processes covered include convective, radiative and evaporative cooling. Federal and state involvement in solar cooling is then discussed. (LEW)

Yellott, J. I.

1981-04-01T23:59:59.000Z

157

Deterministic passive mode locking of solid-state lasers  

SciTech Connect (OSTI)

An additional passive modulation is inserted in the cavity of a passive mode-locked Nd:glass laser in order to provide the conditions for a complete selectivity of the system. A rate equation approach shows that a stationary condition is reached in which only one pulse of the original fluctuation pattern is left. Computed simulations and experimental results are also shown confirming the theoretical predictions.

Martinez, O.E.; Spinelli, L.A.

1981-12-01T23:59:59.000Z

158

Characterization of the passive film formed on weathering steels  

Science Journals Connector (OSTI)

Raman spectroscopy, infrared spectroscopy and electrochemical reduction techniques were used to characterize the passive film formed on weathering steels. Test pieces of weathering steel were exposed to an industrial environment for 4.5 and 8 yrs. In both cases the passive film was composed predominantly of 8-FeOOH with 10–20% ?-FeOOH and possibly some ?-FeOOH. Raman spectra from different depths of the surface were identical which implied that the film composition was homogeneous.

Joseph T. Keiser; Chris W. Brown; Robert H. Heidersbach

1983-01-01T23:59:59.000Z

159

Preservation of FFTF Data Related to Passive Safety Testing  

SciTech Connect (OSTI)

One of the goals of the Fuel Cycle Research and Development Program (FCRD) is to preserve the knowledge that has been gained in the United States on Liquid Metal Reactors (LMR). A key area deserving special attention for preservation is the data relating to passive safety testing that was conducted in FFTF and EBR-II during the 1980’s. Accidents at Unit 4 of the Chernobyl Station and Unit 2 at Three Mile Island changed the safety paradigm of the nuclear power industry. New emphasis was placed on assured safety based on intrinsic plant characteristics that protect not only the public, but the significant investment in the plant as well. Plants designated to perform in this manner are considered to be passively safe since no active sensor/alarm system or human intervention is required to bring the reactor to a safe shutdown condition. The liquid metal reactor (LMR) has several key characteristics needed for a passively safe reactor: reactor coolant with superior heat transfer capability and very high boiling point, low (atmospheric) system pressures, and reliable negative reactivity feedback. The credibility of the design for a passively safe LMR rests on two issues: the validity of analytic methods used to predict passive safety performance and the availability of relevant test data to calibrate design tools. Safety analysis methods used to analyze LMRs under the old safety paradigm were focused on calculating the source term for the Core Disruptive Accident. Passive safety design requires refined analysis methods for transient events because treatment of the detailed reactivity feedbacks is important in predicting the response of the reactor. Similarly, analytic tools should be calibrated against actual test experience in existing LMR facilities. The principal objectives of the combined FFTF natural circulation and Passive Safety Testing program were: 1) to verify natural circulation as a reliable means to safely remove decay heat, 2) to extend passive safety experience to a large-size LMR and obtain data for validating design analysis computer codes, and 3) to develop and test passive safety enhancements that might be used for future LMRs. These tests were designed to provide data sufficient to allow separation of fuel temperature effects from structural temperature effects. The data developed through this testing program were used to verify the predictive capability of passive safety analysis methods as well as provide a data base for calibrating design tools such as the SASSYS/SAS4A codes. These tests were instrumental in improving understanding of reactivity feedback mechanisms in LMRs and demonstrating passive safety margins available in an LMR. Knowledge preservation at the FFTF is focused on the areas of design, construction, startup, and operation of the reactor. This information may be of potential use for international exchanges with other LMR programs around the world. This information provides the basis for creating benchmarks for validating and testing large scale computer programs. All information preserved to date is now being stored and categorized consistent with the IAEA international standardized taxonomy. The test results information exists in several different formats depending upon the final stage of the test evaluation. Over 100 documents relevant to passive safety testing have been identified and are being recovered, scanned, and catalogued. Attempts to recover plant data tapes are also in progress. Documents related to passive safety testing are now being categorized consistent with internationally agreed upon IAEA standards. Documents are being converted to electronic format compatible with a general search engine being developed by INL. The data from the FFTF passive safety tests provides experimental verification of structural reactivity effects that should be very useful to innovative designers seeking to optimize passive safety in the design of new LMRs.

Wootan, David W.; Butner, R. Scott; Omberg, Ronald P.; Makenas, Bruce J.; Nielsen, Deborah L.

2010-10-01T23:59:59.000Z

160

Detection Science  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Chemistry for Measurement and Detection Science Chemistry for Measurement and Detection Science Project Description Chemistry used in measurement and detection science plays a...

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Passive solar is cost-effective: observations on financing conservation and passive solar features in public sector housing  

SciTech Connect (OSTI)

The cost-effectiveness of passive solar systems depends not only on costs and performance but on future fuel prices, the value of architectural amenities, and the financial position of the investor. Because the state is unstable, un-taxed, and has access to low-cost capital, it can afford to make energy-saving/passive solar investments 2 to 3 times those typical in the private sector. Experience with 17 state-financed passive solar housing projects presently in varying stages of design and construction indicates that passive solar systems in multi-family housing can be highly cost-effective. Investments to data are predicted to average $422/GJ/yr. ($445/MMBtu/yr) saved, while life-cycle cost estimates indicate that expenditures which average up to $650 ($700) are justified. The major barrier to passive solar in multi-family housing appears to be a lack of knowledge, both within the government and the architectural profession, about economical passive solar design opportunities.

Rouse, R.E.

1980-01-01T23:59:59.000Z

162

Determination of Pu content in a Spent Fuel Assembly by Measuring Passive Total Neutron count rate and Multiplication with the Differential Die-Away Instrument  

SciTech Connect (OSTI)

Inspired by approach of Bignan and Martin-Didier (ESARDA 1991) we introduce novel (instrument independent) approach based on multiplication and passive neutron. Based on simulations of SFL-1 the accuracy of determination of {sup tot}Pu content with new approach is {approx}1.3-1.5%. Method applicable for DDA instrument, since it can measure both multiplication and passive neutron count rate. Comparison of pro's & con's of measuring/determining of {sup 239}Pu{sub eff} and {sup tot}Pu suggests a potential for enhanced diversion detection sensitivity.

Henzl, Vladimir [Los Alamos National Laboratory; Croft, Stephen [Los Alamos National Laboratory; Swinhoe, Martyn T. [Los Alamos National Laboratory; Tobin, Stephen J. [Los Alamos National Laboratory

2012-07-13T23:59:59.000Z

163

A study of electrode passivation during aqueous phenol electrolysis  

SciTech Connect (OSTI)

The process of electrode passivation during phenol electrolysis at a platinum electrode was studied in a sulfuric acid electrolyte (pH0-1). Passive film growth and the effects of concentration and potential were investigated using chronoamperometry, x-ray photoelectron spectroscopy, and gel permeation chromatography. The main products of the phenol oxidation are oligomers/polymers with weight-averaged molecular weights typically around 1000 g/mol after a 30 ms anodic pulse. X-ray photoelectron spectroscopy shows that the passivating polymer film is oxidized incompletely with many hydroxyl groups present. Increased potential increased the polymerization rate, but above 1.0 V vs. SCE film decomposition reactions also occurred. Increased phenol concentration increased the charge required to initiate passivation. Potential steps to the open-circuit potential or to mo9re cathodic values can interfere with the passivation process. Chronamperometric results show that the current decay at the passivated electrode is roughly inversely proportional to time and that the currents for a fixed amount of polymerization reaction follow a Tafel relationship. This t;type of decay is not due to a limitation caused b;y reactant diffusion through, nor IR drop across, a growing film but is more characteristic of electron tunneling through a growing insulating barrier layer. The model proposed for the observed behavior involves the formation of a region of high molecular weight, oxidized material at the electrode surface which blocks further reaction at the electrode. The rate-determining step at the passivated electrode is therefore electron tunneling through this unreactive material.

Gattrell, M.; Kirk, D.W. (Univ. of Toronto, ON (Canada))

1993-04-01T23:59:59.000Z

164

Passive solar design for multi-family buildings. Case studies and conclusions from Massachusetts' Multi-Family Passive Solar Program  

SciTech Connect (OSTI)

This book is the culmination of a four-year effort. It summarizes experiences and conclusions from Massachusetts' Multi-Family Passive Solar Program (MFPS) - a pioneering project conceived at the Executive Office of Energy Resources in February 1979 and still underway. The program educates architects, engineers, and housing officials about passive solar design by addressing problems and opportunities in their own buildings. It is the first major investigation of multi-family passive solar design in this country and has served as a national model. Section I provides an overview of the Multi-Family Passsive Solar Program and its projects, together with a summary of program conclusions and design recommendations. The section should be particularly useful to developers and housing officials interested in passive solar options. Section II presents detailed case studies on seven housing projects containing Energy Office-funded conservation and passive solar features. It gives the reader a thorough analysis of actual multi-family buildings, now occupied or under construction, and lists the unique problems and opportunities each presents. The case studies are candid about design errors, as well as successes, and should help architects and developers avoid similar mistakes. Section III focuses on the key energy design issues for multi-family passive solar buildings and is intended for architects and designers. The section begins with an overview of climate, micro-climate, and thermal comfort, followed by a chapter on what makes multi-family buildings different from homes or offices. Energy-conserving components and installation practices, window selection, and passive solar system design are then discussed in depth. The final chapter points out pitfalls to be avoided when analyzing conservation and solar costs, performance, and cost-effectiveness. The section is followed by appendices.

Rouse, R.E.

1983-01-01T23:59:59.000Z

165

Passive tire pressure sensor and method  

DOE Patents [OSTI]

A surface acoustic wave device includes a micro-machined pressure transducer for monitoring tire pressure. The device is configured having a micro-machined cavity that is sealed with a flexible conductive membrane. When an external tire pressure equivalent to the cavity pressure is detected, the membrane makes contact with ridges on the backside of the surface acoustic wave device. The ridges are electrically connected to conductive fingers of the device. When the detected pressure is correct, selected fingers on the device will be grounded producing patterned acoustic reflections to an impulse RF signal. When the external tire pressure is less than the cavity reference pressure, a reduced reflected signal to the receiver results. The sensor may further be constructed so as to identify itself by a unique reflected identification pulse series.

Pfeifer, Kent Bryant (Los Lunas, NM); Williams, Robert Leslie (Albuquerque, NM); Waldschmidt, Robert Lee (Calgary, CA); Morgan, Catherine Hook (Ann Arbor, MI)

2007-09-04T23:59:59.000Z

166

Proposed passive solar retrofit project for the Tennessee Vallley Authority  

SciTech Connect (OSTI)

A program has been advocated to introduce the widespread use of passive solar techniques as an energy source for the heating and cooling of existing housing in the TVA region. The development of curricula and training of TVA's energy advisors, Valley contractors, and suppliers of passive solar retrofit products and services is discussed. In addition, the program will train and certify local teams who will provide technical assistance to contractors, inform the public through construction workshops, classes, information dissemination, and provide seminars for special target audiences such as bankers and real estate agents. The passive solar retrofit applications to be included in this program are attached solar greenhouses or sunspaces, direct and indirect solar gain systems, shading or screening devices such as trees and awnings, and movable insulation.

Yanda, S.B. (Solar Applications Branch, Hinesburg, VT); Hicks, S.D.

1980-01-01T23:59:59.000Z

167

List of Passive Solar Space Heat Incentives | Open Energy Information  

Open Energy Info (EERE)

Space Heat Incentives Space Heat Incentives Jump to: navigation, search The following contains the list of 278 Passive Solar Space Heat Incentives. CSV (rows 1 - 278) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active Alternative Energy and Energy Conservation Patent Exemption (Corporate) (Massachusetts) Industry Recruitment/Support Massachusetts Commercial Biomass Fuel Cells Geothermal Electric Ground Source Heat Pumps Hydroelectric energy Municipal Solid Waste Passive Solar Space Heat Photovoltaics Solar Space Heat Solar Thermal Electric Solar Thermal Process Heat Solar Water Heat Wind energy Yes Alternative Energy and Energy Conservation Patent Exemption (Personal) (Massachusetts) Industry Recruitment/Support Massachusetts General Public/Consumer Biomass

168

Development of a passive soil gas flux sampler  

E-Print Network [OSTI]

DEVELOPMENT OF A PASSIVE SOIL GAS FLUX SAMPLER A Thesis by BRIAN C. McQUOWN Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December 1991... Major Subject: Civil Engineering DEVELOPMENT OF A PASSIVE SOIL GAS FLUX SAMPLER A Thesis by BRIAN C. McQUOWN Approved as to style and content by: Stuart A. a terman (Co-chair of Committee) Andrew . cFa land (Member) Bill Batchelor (Co...

McQuown, Brian C

2012-06-07T23:59:59.000Z

169

Passive-solar-retrofit study for the United States Navy  

SciTech Connect (OSTI)

A passive solar retrofit study has been conducted for the United States Navy at the Los Alamos National Laboratory. The purpose of the study was to determine the energy savings obtainable in concrete block buildings from several passive solar heating strategies. A procedure involving the use of test cell data and computer simulation was employed to assess the merits of six retrofit options. The six strategies selected were chosen on the basis of providing a series of options that will deliver increasing energy savings at the cost of correspondingly increased levels of commitment.

Wray, W.O.; Miles, C.R.

1981-01-01T23:59:59.000Z

170

A passive solar test facility for Saudi Arabia  

SciTech Connect (OSTI)

A passive solar test facility has been designed for Dammam, Saudi Arabia. It will be located on the campus of King Faisal University, adjacent to the Persian Gulf. This maritime desert climate is terribly sevre, and one for which it is a formidable challenge to design a year around thermally efficient building. This facility incorporates seven different passive strategies: proper orientation, operable shading for windows, flow-through ventilation, externally insulated thermal mass, wind tower with direct evaporative cooling, indirect evaporative cooling through a double shell, and solar water heating. Construction should begin in June of 1983. Upon completion, the building will be monitored for at least two years.

Woods, P.K.

1983-06-01T23:59:59.000Z

171

An investigation on reliable passivation of GaP  

E-Print Network [OSTI]

reports the results of a study of sputtered Silicon Nitride 3N4) and Anodic Oxide as passivating techniques for Gallium Phosphide. Anodic Oxide was grown on GaP by anodizing the semiconductor in 30% hydrogen peroxide. The resulting oxide had an index... reports the results of a study of sputtered Silicon Nitride 3N4) and Anodic Oxide as passivating techniques for Gallium Phosphide. Anodic Oxide was grown on GaP by anodizing the semiconductor in 30% hydrogen peroxide. The resulting oxide had an index...

Greaves King, Carlos A.

2012-06-07T23:59:59.000Z

172

Multi-State Physics Models of Aging Passive Components in Probabilistic Risk Assessment  

SciTech Connect (OSTI)

Multi-state Markov modeling has proved to be a promising approach to estimating the reliability of passive components - particularly metallic pipe components - in the context of probabilistic risk assessment (PRA). These models consider the progressive degradation of a component through a series of observable discrete states, such as detectable flaw, leak and rupture. Service data then generally provides the basis for estimating the state transition rates. Research in materials science is producing a growing understanding of the physical phenomena that govern the aging degradation of passive pipe components. As a result, there is an emerging opportunity to incorporate these insights into PRA. This paper describes research conducted under the Risk-Informed Safety Margin Characterization Pathway of the Department of Energy’s Light Water Reactor Sustainability Program. A state transition model is described that addresses aging behavior associated with stress corrosion cracking in ASME Class 1 dissimilar metal welds – a component type relevant to LOCA analysis. The state transition rate estimates are based on physics models of weld degradation rather than service data. The resultant model is found to be non-Markov in that the transition rates are time-inhomogeneous and stochastic. Numerical solutions to the model provide insight into the effect of aging on component reliability.

Unwin, Stephen D.; Lowry, Peter P.; Layton, Robert F.; Heasler, Patrick G.; Toloczko, Mychailo B.

2011-03-13T23:59:59.000Z

173

Catalyst Design for Urea-less Passive Ammonia SCR Lean-Burn SIDI...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Design for Urea-less Passive Ammonia SCR Lean-Burn SIDI Aftertreatment System Catalyst Design for Urea-less Passive Ammonia SCR Lean-Burn SIDI Aftertreatment System Lean-burn SIDI...

174

The accuracy of three passive dosimeters as compared to charcoal tubes  

E-Print Network [OSTI]

Passive monitors have become increasingly popular for monitoring airborne contaminants because they are lightweight, inexpensive, and easy to use. A passive or diffusive sampler is a device which is capable of taking samples of gas or vapor...

Junco, Lynnea Goodley

2012-06-07T23:59:59.000Z

175

Dual port temperature sensor tag for passive UHF RFID systems  

E-Print Network [OSTI]

Dual port temperature sensor tag for passive UHF RFID systems J. Virtanen Rauma Research Unit and to simplify the measurement procedure. Design/methodology/approach ­ The sensor tag is based on a dual port sensing concept in which two ports are used to obtain sensor readings. By utilizing two ports instead

Elsherbeni, Atef Z.

176

Force and Stiffness of Passive Magnetic Bearings Using Permanent Magnets.  

E-Print Network [OSTI]

1 Force and Stiffness of Passive Magnetic Bearings Using Permanent Magnets. Part 2 : Radial Magnetization R. Ravaud, G. Lemarquand, V. Lemarquand Abstract This paper deals with the calculation of the force and the stiffness between two ring permanent magnets whose polarization is radial

Boyer, Edmond

177

Experimental Comparison of Robotics Locomotion with Passive Tether and Active  

E-Print Network [OSTI]

that results from the effect of water hammer. It also reduces the friction of the tether by the jerks from the water hammer effect. In this paper, we duplicate the active tethered system and test the performance of locomotion. Keywords: active tethered system, passive tethered system, water hammer effect I. INTRODUCTION

Voyles, Richard

178

Simple procedure for schematic design of passive solar buildings  

SciTech Connect (OSTI)

A simple procedure for use during the schematic phase of passive solar building design is presented in this article. The procedure is quantitative and accurate enough to insure that designs based on the provided starting point values of the primary building parameters will be cost effective.

Wray, W.O.; Kosiewicz, C.E.

1984-01-01T23:59:59.000Z

179

Particle Sizing using Passive Ultrasonic Measurement of Vessel Wall Vibrations  

E-Print Network [OSTI]

Particle Sizing using Passive Ultrasonic Measurement of Vessel Wall Vibrations Gillian Carson for particle sizing using an ultrasonic transducer to measure vessel wall vibrations and 1 #12;considers in a stirred vessel, its subse- quent impact with the vessel wall, and the resulting flexural vibrations

Mottram, Nigel

180

Theory of passive harmonic mode-locking using waveguide arrays  

E-Print Network [OSTI]

laser," Opt. Lett. 23, 123-125 (1998). 3. M. E. Fermann and J. D. Minelly, "Cladding-pumped passive theoretical treatment is given of the phe- nomenon of harmonic mode-locking in a laser cavity mode Optical Society of America OCIS codes: (140.4050) Mode-locked lasers; (060.5530) Pulse propagation

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Utilizing Passive Ventilation to Complement HVAC Systems in Enclosed Buildings  

E-Print Network [OSTI]

Utilizing Passive Ventilation to Complement HVAC Systems in Enclosed Buildings Tom Rogg REU Student to assist HVAC has the potential to significantly reduce life cycle cost and energy consumption and electrical system that will tie thermostats to controlled valves in the actual HVAC system. Based on results

Mountziaris, T. J.

182

Hood River Passive House, Hood River, Oregon (Fact Sheet)  

SciTech Connect (OSTI)

The Hood River Passive Project was developed by Root Design Build of Hood River Oregon using the Passive House Planning Package (PHPP) to meet all of the requirements for certification under the European Passive House standards. The Passive House design approach has been gaining momentum among residential designers for custom homes and BEopt modeling indicates that these designs may actually exceed the goal of the U.S. Department of Energy's (DOE) Building America program to "reduce home energy use by 30%-50%" (compared to 2009 energy codes for new homes). This report documents the short term test results of the Shift House and compares the results of PHPP and BEopt modeling of the project. The design includes high R-Value assemblies, extremely tight construction, high performance doors and windows, solar thermal DHW, heat recovery ventilation, moveable external shutters and a high performance ductless mini-split heat pump. Cost analysis indicates that many of the measures implemented in this project did not meet the BA standard for cost neutrality. The ductless mini-split heat pump, lighting and advanced air leakage control were the most cost effective measures. The future challenge will be to value engineer the performance levels indicated here in modeling using production based practices at a significantly lower cost.

Not Available

2014-02-01T23:59:59.000Z

183

Natural circulating passive cooling system for nuclear reactor containment structure  

DOE Patents [OSTI]

A passive cooling system for the contaminant structure of a nuclear reactor plant providing protection against overpressure within the containment attributable to inadvertent leakage or rupture of the system components. The cooling system utilizes natural convection for transferring heat imbalances and enables the discharge of irradiation free thermal energy to the atmosphere for heat disposal from the system.

Gou, Perng-Fei (Saratoga, CA); Wade, Gentry E. (Saratoga, CA)

1990-01-01T23:59:59.000Z

184

Passive Network-Awareness for Dynamic Resource-Constrained Networks  

E-Print Network [OSTI]

a framework for defining passively sensed context through network overhearing, defining context metrics metrics and evaluate the quality with which they can re- flect ground truth using simulation. We also.g., in reminder applications [6]) and even weather conditions (e.g., in applications for automated field note

Julien, Christine

185

Massachusetts multi-family passive solar housing program  

SciTech Connect (OSTI)

A unique combination of Federal, State, and Local resources and initiative is producing energy-efficient/passive solar elderly housing in Massachusetts. The program, developed at and managed by the Massachusetts Executive Office of Energy Resources, is using $2.5 million of state energy bonding authority to finance incremental costs of energy conservation and passive solar features in state-financed local housing projects. The design and technical assistance, incremental cost estimating, and public outreach portions of the program have been made possible under a grant from the US Department of Energy (through NESEC) as part of the Solar Cities Program. The program includes both new projects and retrofits, with building types ranging from mid-rise, high density urban structures to two-story suburban townhouses. Seventeen project, including over 400 passive solar units, are in working drawings or out to bid and more are in concept development. It is anticipated that present funding will ultimately permit construction of as many as 800 passive solar heated apartments. On the average, these projects will use only 25% of the energy required to heat a similar building of conventional design.

Rouse, R.E.; Shannon, R.F.

1980-01-01T23:59:59.000Z

186

Passive cooling system for nuclear reactor containment structure  

DOE Patents [OSTI]

A passive cooling system for the contaminant structure of a nuclear reactor plant providing protection against overpressure within the containment attributable to inadvertent leakage or rupture of the system components. The cooling system utilizes natural convection for transferring heat imbalances and enables the discharge of irradiation free thermal energy to the atmosphere for heat disposal from the system.

Gou, Perng-Fei (Saratoga, CA); Wade, Gentry E. (Saratoga, CA)

1989-01-01T23:59:59.000Z

187

Light-Induced Passivation of Si by Iodine Ethanol Solution: Preprint  

SciTech Connect (OSTI)

We report on our observations of light-activated passivation of silicon surfaces by iodine-ethanol solution.

Sopori, B.; Rupnowski, P.; Appel, J.; Guhaabiswas, D.; Anderson-Jackson, L.

2009-02-01T23:59:59.000Z

188

THE PASSIVE SOLAR DESIGN PROCESS FOR A SMALL OFFICE/LABORATORY BUILDING  

E-Print Network [OSTI]

and underground thermal storage), the passive solar redesignCollec- tion, storage, and distribution of solar energy in

Andersson, Brandt

2011-01-01T23:59:59.000Z

189

Passive Imaging of Warhead-Like Configurations Using Cosmic-Ray Muons  

SciTech Connect (OSTI)

Cosmic-Muon-Based Interrogation has untapped potential for national security. This presentation describes muons-based passive interrogation techniques.

Schwellenbach, D.

2012-07-17T23:59:59.000Z

190

US Department of Energy passive and hybrid solar energy program update  

SciTech Connect (OSTI)

Eighty-five papers were title listed in these proceedings. Each paper describes a project in one of the following areas: design and analysis tools and performance monitoring for residential buildings; manufactured housing; materials and components for passive and hybrid solar buildings; commercial buildings; urban, multifamily and retrofit passive solar buildings; and advanced passive research and development. Also included is an index of passive and hybrid solar contractors. (LEW)

Not Available

1981-08-01T23:59:59.000Z

191

Online measurement of bead geometry in GMAW-based additive manufacturing using passive vision  

Science Journals Connector (OSTI)

Additive manufacturing based on gas metal arc welding is an advanced technique for depositing fully dense components with low cost. Despite this fact, techniques to achieve accurate control and automation of the process have not yet been perfectly developed. The online measurement of the deposited bead geometry is a key problem for reliable control. In this work a passive vision-sensing system, comprising two cameras and composite filtering techniques, was proposed for real-time detection of the bead height and width through deposition of thin walls. The nozzle to the top surface distance was monitored for eliminating accumulated height errors during the multi-layer deposition process. Various image processing algorithms were applied and discussed for extracting feature parameters. A calibration procedure was presented for the monitoring system. Validation experiments confirmed the effectiveness of the online measurement system for bead geometry in layered additive manufacturing.

Jun Xiong; Guangjun Zhang

2013-01-01T23:59:59.000Z

192

MEMBRANE FUNCTION, Part 2. Passive Movement: Diffusion, Osmosis, and Gibbs-Donnan Equilibrium 1  

E-Print Network [OSTI]

such as ion gradients or sunlight. I. Passive transport Passive transport is diffusion through a membrane of the membrane. This movement is entirely by the process of diffusion (to be covered below) · ions and polar. Mechanisms of Membrane Transport There are two general modes of transport across membranes: passive transport

Prestwich, Ken

193

Integrated Design of Simulation Models for Passive Houses Petr Novak, Radek Sindelar  

E-Print Network [OSTI]

Integrated Design of Simulation Models for Passive Houses Petr Nov´ak, Radek Sindel´ar Christian. The use-case shows that the design of simulation models for passive houses can be user-friendly and feasible even for non-experts as it is based on a graphical tool that enables to draw a passive house floor

194

Solel och solvärme ur LCC-perspektiv för ett passiv-flerbostadshus; PV and solar thermal for a multiple dwelling passive house under a LCC-perspective.  

E-Print Network [OSTI]

?? This master’s degree project concerns the combination of a multi dwelling passive house with solar energy for the generation of electricity and domestic hot… (more)

Böhme Florén, Simon

2008-01-01T23:59:59.000Z

195

Surface passivation and orientation dependence in the electronic properties of silicon nanowires  

Science Journals Connector (OSTI)

Various surface passivations for silicon nanowires have previously been investigated to extend their stability and utility. However, the fundamental mechanisms by which such passivations alter the electronic properties of silicon nanowires have not been clearly understood thus far. In this work, we address this issue through first-principles calculations on fluorine, methyl and hydrogen passivated [110] and [111] silicon nanowires. Comparing these results, we explain how passivations may alter the electronic structure through quantum confinement and strain and demonstrate how silicon nanowires may be modelled by an infinite circular quantum well. We also discuss why [110] nanowires are more strongly influenced by their surface passivation than [111] nanowires.

Keenan Zhuo; Mei-Yin Chou

2013-01-01T23:59:59.000Z

196

A Novel Passive Millimeter Imager for Broad-Area Search - Final Report on Project PL09-NPMI-PD07 (PNNL-55180)  

SciTech Connect (OSTI)

This report describes research and development efforts toward a novel passive millimeter-wave (mm-wave) electromagnetic imaging device for broad-area search. It addresses the technical challenge of detecting anomalies that occupy a small fraction of a pixel. The purpose of the imager is to pinpoint suspicious locations for cuing subsequent higher-resolution imaging. The technical basis for the approach is to exploit thermal and polarization anomalies that distinguish man-made features from natural features.

Tedeschi, Jonathan R.; Bernacki, Bruce E.; Kelly, James F.; Sheen, David M.; Harris, Robert V.; Hall, Thomas E.; Hatchell, Brian K.; Knopik, Clint D.; Lechelt, Wayne M.; McMakin, Douglas L.; Mendoza, Albert; Severtsen, Ronald H.; Valdez, Patrick LJ

2011-12-31T23:59:59.000Z

197

Insulator-based DEP with impedance measurements for analyte detection  

DOE Patents [OSTI]

Disclosed herein are microfluidic devices for assaying at least one analyte specie in a sample comprising at least one analyte concentration area in a microchannel having insulating structures on or in at least one wall of the microchannel which provide a nonuniform electric field in the presence of an electric field provided by off-chip electrodes; and a pair of passivated sensing electrodes for impedance detection in a detection area. Also disclosed are assay methods and methods of making.

Davalos, Rafael V. (Blacksburg, VA); Simmons, Blake A. (San Francisco, CA); Crocker, Robert W. (Fremont, CA); Cummings, Eric B. (Livermore, CA)

2010-03-16T23:59:59.000Z

198

Active charge/passive discharge solar heating systems: thermal analysis  

SciTech Connect (OSTI)

The performance of active charge/passive discharge solar space-heating systems is analyzed. This type of system combines liquid-cooled solar collector panels with a massive integral storage component that passively heats the building interior by radiation and free convection. The TRNSYS simulation program is used to evaluate system performance and to provide input for the development of a simplified analysis method. This method, which provides monthly calculations of delivered solar energy, is based on Klein's Phi-bar procedure and data from hourly TRNSYS simulations. The method can be applied to systems using a floor slab, a structural wall, or a water tank as the storage component. Important design parameters include collector area and orientation, building heat loss, collector and heat-exchanger efficiencies, storage capacity, and storage to room coupling.

Swisher, J.

1981-01-01T23:59:59.000Z

199

Chapter 5 - Passive Utilization of Solar Energy in a Building  

Science Journals Connector (OSTI)

Abstract This chapter presents different passive solar technologies applied in buildings with a focus on technologies suitable for high-latitude countries. Direct and indirect solar gain systems are presented and described in detail. Examples of traditional and modern passive solar solutions are analyzed. Special attention is given to buffer spaces and different glazing technologies; their application depending on climatic conditions is analyzed, and some recommendations are given. Implementation of transparent insulation (TI) in the building envelope is considered. TI is transparent for solar radiation and is characterized by relatively high thermal resistance. Some examples of TI practical applications are presented, including their use for daylighting purposes. The idea of integrating phase-change materials (PCMs) into building structures is considered. Their storage role, high heat capacity, as well as cooling and heating functions are explained. Different forms of PCM integration technologies are presented.

Dorota Chwieduk

2014-01-01T23:59:59.000Z

200

Passive hybrid sensing tag with flexible substrate saw device  

DOE Patents [OSTI]

The integration of surface acoustic wave (SAW) filters, microfabricated transmission lines, and sensors onto polymer substrates in order to enable a passive wireless sensor platform is described herein. Incident microwave pulses on an integrated antenna are converted to an acoustic wave via a SAW filter and transmitted to an impedance based sensor, which for this work is a photodiode. Changes in the sensor state induce a corresponding change in the impedance of the sensor resulting in a reflectance profile. Data collected at a calibrated receiver is used to infer the state of the sensor. Based on this principal, light levels were passively and wirelessly demonstrated to be sensed at distances of up to about 12 feet.

Skinner, Jack L.; Chu, Eric Y.; Ho, Harvey

2012-12-25T23:59:59.000Z

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

A statistical analysis of passive solar superinsulated homes in Minnesota  

SciTech Connect (OSTI)

This study analyzed the space heat performance of 46 passive solar superinsulated homes whose construction was financed by the Minnesota Housing Finance Agency (MHFA). heat gain and loss calculations were used to predict the auxiliary heating energy required by the houses. These calculations were adjusted for actual weather conditions, thermostat settings and other variables during the 1981-1982 heating season. The sample was divided into two sub-samples, one containing houses with ratios of south glass area relative to floor area of 8.5% or larger, and a second with smaller ratios of south glass area to floor area. The results suggest that houses with larger south glass area relative to floor area may not perform as predicted. These houses appeared to have more heat loss than heat gain associated with the south windows. In the houses with less south facing glass, the passive solar components appeared to perform as predicted.

Fugerson, M.; Lancaster, R.

1983-06-01T23:59:59.000Z

202

Uncertainty reduction requirements in cores designed for passive reactivity shutdown  

SciTech Connect (OSTI)

The first purpose of this paper is to describe the changed focus of neutronics accuracy requirements existing in the current US advanced LMR development program where passive shutdown is a major design goal. The second purpose is to provide the background and rationale which supports the selection of a formal data fitting methodology as the means for the application of critical experiment measurements to meet these accuracy needs. 6 refs., 1 fig., 2 tabs.

Wade, D.C.

1988-01-01T23:59:59.000Z

203

Inexpensive passive samplers capture POPs data in developing countries  

Science Journals Connector (OSTI)

Passive air samplers are particularly suitable for capturing POPs data in developing countries because they can operate without electricity and are much less expensive than the high-volume samplers conventionally used to capture POPs data. ... The GAPS data in the ES&T paper are the first to present a “coherent ‘big picture’ of the atmospheric occurrence and distribution of POPs on a global scale,” says Knut Breivik with the Norwegian Institute for Air Research. ...

Kellyn Betts

2008-12-10T23:59:59.000Z

204

Results of the Washington Passive Solar Design/Build Competition  

SciTech Connect (OSTI)

In an effort to encourage the design, construction, and marketing of moderately priced passive solar homes in Washington state, the Western Solar Utilization Network (Western SUN) recently sponsored the Washington Passive Solar Design/Build Competition. The competition drew an overwhelming response from designers and builders throughout Washington. Thermal performance of the designs was evaluated by a technical review committee, and final selections were made by the Competition Jury in accordance with the following criteria: perceived market acceptance, thermal performance, cost effectiveness, simplicity of design and operation, and completeness of the passive concept. Design contract awards totaling $50,000 were made available to winners in four categories, including single and multi-family, new and remodeled residences. In order to receive the award in its entirety, winning design/build teams are required to construct their design by April, 1983. As a result of the competition, a great deal was learned about the attitudes and knowledge of professionals and the general public regarding the use of solar energy in Washington state. Among the points that will be highlighted in this paper are the following: (1) a design/build competition is an effective vehicle for promoting solar energy among professionals in the housing community as well as the general public; (2) passive solar techniques can contribute significantly to the heating and cooling needs of residential housing throughout the state of Washington; (3) there is a great deal of interest and talent among the designers and builders of solar residences in Washington; and (4) follow-up activities, including the promotion of winning designs, the systematic collection of performance data, and identification of the major obstacles confronting designers and builders of solar homes, are critical to the success of the program in achieving both its short-term and long-term goals.

Nylen, N.

1981-01-01T23:59:59.000Z

205

CMR Shuffler System: Passive Mode Calibration and Certification Report  

SciTech Connect (OSTI)

Los Alamos National Laboratory has a number of spherical confinement vessels (CVs) remaining from tests involving nuclear materials. These vessels have an inner diameter of 6 feet with 1 to 2 inch thick steel walls. The goal of the Confinement Vessel Disposition (CVD) project is to remove debris and reduce contamination inside the vessels. As debris is removed from the vessels, material will be placed in waste drums. Far-field gamma ray assay will be used to determine when a drum is nearing a {sup 239}Pu equivalent mass of less than 200 g. The drum will then be assayed using a waste drum shuffler operated in passive mode using a neutron coincidence counting method for accountability. This report focuses on the testing and calibration of the CMR waste drum shuffler in passive mode operation. Initial testing was performed to confirm previously accepted measurement parameters. The system was then calibrated using a set of weapons grade Pu (WGPu, {sup 239}Pu > 93%) oxide standards placed inside a 55 gallon drum. The calibration data ranges from Pu mass of 0.5 g to 188.9 g. The CMR waste drum shuffler has been tested and calibrated in passive mode in preparation for safeguards accountability measurements of waste drums containing material removed from CVs for the CVD project.

Frame, Katherine C. [Los Alamos National Laboratory; Gomez, Cipriano D. [Retired CMR-OPS: OPERATIONS; Salazar, William R. [Los Alamos National Laboratory; Mayo, Douglas R. [Los Alamos National Laboratory; Vigil, Georgiana M. [Los Alamos National Laboratory; Crooks, William J. [Los Alamos National Laboratory; Stange, Sy [Los Alamos National Laboratory

2012-07-20T23:59:59.000Z

206

Active/passive behavior of copper in strong sulfuric acid  

SciTech Connect (OSTI)

A combination of thermodynamic analyses and potentiodynamic polarization tests have been used to study the anodic behavior of Cu in strong H{sub 2}SO{sub 4} solutions in the concentration range 1--10 M. The studies were supplemented by chemical analyses of surface films. It was found that concentration-dependent changes in the activity of water played a major role in determining the anodic behavior and relative stability of corrosion product films. The anodic Tafel slope decreased from {approximately} 41 to {approximately} 31 mV with increasing acid concentration. The onset of limiting current and active-passive behaviors at higher potentials was determined by the formation of films of hydrated copper sulfate, CuSO{sub 4} {center_dot} xH{sub 2}O, and not by formation of oxides. Limiting current behavior was observed in 1 M solutions, where the degree of hydration was x = 5. Well-developed passivity occurred in 10 M solutions where x = 1. The results are relevant to industrial electrorefining operations for Cu and indicate that chloride contamination, if present in sufficient amounts, could cause the premature onset of limiting current behavior (anode passivity) during refining.

Tromans, D.; Ahmed, T. [Univ. of British Columbia, Vancouver, British Columbia (Canada). Dept. of Metals and Materials Engineering

1998-02-01T23:59:59.000Z

207

National passive solar conference, 4th, Kansas City, MO, October 3-5, 1979, proceedings. Volume 4  

SciTech Connect (OSTI)

Papers concern recent experience in the research, development and application of passive solar technology. Specific topics include the legislative barriers and incentives to passive solar systems, coupled thermal and lighting simulations for evaluating daylighting design effectiveness, passive solar applications in inner city housing, radiative cooling in a desert climate, salinity gradient solar ponds, the retrofit of a masonry home for passive space heating, the performances of active and passive solar domestic hot water systems, builder experience with passive solar home construction, the use of solar energy installations on farm buildings, and a method of determining the thermal performance of passive storage walls.

Franta, G.

1981-01-01T23:59:59.000Z

208

Use of DRACS to Enhance HTGRs Passive Safety and Economy  

SciTech Connect (OSTI)

This paper discusses the use of DRACS to Enhance HTGRs Passive Safety and Economy. One of the important requirements for Gen. IV High Temperature Gas Cooled Reactors (HTGR) is passive safety. Currently all the HTGR designs use Reactor Vessel Auxiliary Cooling System (RVACS) for passive decay heat removal. [1] The decay heat first is transferred to core barrel by conduction and radiation, and then to reactor vessel by thermal radiation and convection; finally the decay heat is transferred to natural circulated air or water systems. RVACS can be characterized as a surface based decay heat removal system. Similar concepts have been widely used in sodium cooled fast reactor (SFR) designs, advanced light water reactors like AP1000. The RVACS is especially suitable for smaller power reactors since small systems have relatively larger surface area. RVACS tends to be less expensive. However, it limits the largest achievable power level for modular HTGRs due to the mismatch between the reactor power (proportional to volume) and decay heat removal capability (proportional to surface). When the relative decay heat removal capability is reduced, the peak fuel temperature increases, even close to the design limit. Annual designs with internal reflector can mitigate this effect therefore further increase the power. Another way to increase power is to increase power density. However, it is also limited by the decay heat removal capability. Besides safety, HTGRs also need to be economical in order to compete with other reactor designs. The limit of decay heat removal capability set by using RVACS has affected the economy of HTGRs. Forsberg [2] pointed out other disadvantages of using RVACS such as conflicting functional requirements for the reactor vessel and scaling distortion for integral effect test of the system performance. A potential alternative solution is to use a volume based passive decay removal system, call Direct Reactor Auxiliary Cooling Systems (DRACS), to remove or mitigate the limitation on decay heat removal capability. DRACS has been widely used in SFR designs and in liquid salt cooled high temperature reactors. The containment cooling system in BWR is another example of volume based decay removal systems. DRACS composes of natural circulation loops with two sets of heat exchangers, one in reactor side and another is in environment side. DRACS has the benefits of increasing the power as needed (scalability) and modularity. This paper introduces the concept of using DRACS to enhance HTGRs passive safety and economy.

Haihua Zhao; Hongbin Zhang; Ling Zou

2011-06-01T23:59:59.000Z

209

A DISTRIBUTED FRAMEWORK FOR PASSIVE WORM DETECTION AND THROTTLING IN P2P NETWORKS  

E-Print Network [OSTI]

.g. Distributed.net and Adhoc Networks) and distributed computing (e.g. Seti@home and Folding@home). Decentralized

Tokarchuk, Laurissa

210

PROBABILISTIC STRUCTURAL HEALTH MONITORING USING PASSIVE-ONLY DAMAGE DETECTION BY RECIPROCITY OF GREEN'S FUNCTION  

E-Print Network [OSTI]

to the lack of exact knowledge to the statistical distribution (most likely in a real world wind turbine blade [1-4]. Wind turbines are particularly attractive structure because of the wind, aerodynamic with significant acoustic or ultrasonic noise sources. KEYWORDS : Diffuse field, Reciprocity, Green's function, PC

Paris-Sud XI, Université de

211

Improving dielectric performance in anodic aluminum oxide via detection and passivation of defect states  

SciTech Connect (OSTI)

The electronic and ionic transports in 32–56?nm thick anodic aluminum oxide films are investigated before and after a 1-h anneal at 200–400?°C in argon. Results are correlated to their defect density as measured by the Mott-Schottky technique. Solid state measurements show that electronic conduction upon annealing is hindered by an increase in the Schottky emission barrier, induced by a reduction in dopant density. Using an electrochemical contact, the films fail rapidly under cathodic polarization, unless defect density is decreased down to 10{sup 17}?cm{sup ?3}, resulting in a three order of magnitude reduction in current and no visible gas evolution. Under anodic polarization, the decrease in defect density delays the onset of ionic conduction as well as further oxide growth and failure.

Mibus, M.; Zangari, G. [Department of Materials Science and Engineering, University of Virginia, Charlottesville, Virginia 22904 (United States); Jensen, C. [Department of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22904 (United States); Hu, X.; Reed, M. L. [Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, Virginia 22904 (United States); Knospe, C. [Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, Virginia 22904 (United States)

2014-06-16T23:59:59.000Z

212

THE EARLY EARLY TYPE: DISCOVERY OF A PASSIVE GALAXY AT z{sub spec} {approx} 3  

SciTech Connect (OSTI)

We present the discovery of a massive, quiescent galaxy at z = 2.99. We have obtained an Hubble Space Telescope WFC3 spectrum of this object and measured its redshift from the detection of a deep 4000 A break consistent with an old population and a high metallicity. By stellar population modeling of both its grism spectrum and broadband photometry, we derive an age of {approx}0.7 Gyr, implying a formation redshift of z > 4, and a mass >10{sup 11} M{sub Sun }. Although this passive galaxy is the most distant confirmed so far, we find that it is slightly less compact than other z > 2 early types of similar mass, being overall more analogous to those z {approx} 1.6 field early-type galaxies. The discovery of this object shows that early-type galaxies are detectable to at least z = 3 and suggests that the diversity of structural properties found in z = 1.4-2 ellipticals to earlier epochs could have its origin in a variety of formation histories among their progenitors.

Gobat, R.; Strazzullo, V.; Daddi, E.; Bethermin, M. [Laboratoire AIM-Paris-Saclay, CEA/DSM-CNRS, Universite Paris Diderot, Irfu/Service d'Astrophysique, CEA Saclay, Orme des Merisiers, F-91191 Gif sur Yvette (France); Onodera, M.; Carollo, M. [Institute for Astronomy, ETH Zuerich Wolfgang-Pauli-strasse 27, CH-8093 Zuerich (Switzerland); Renzini, A. [INAF, Osservatorio Astronomico di Padova Vicolo dell'Osservatorio 5, I-35122 Padova (Italy); Dickinson, M. [National Optical Astronomy Observatory, P.O. Box 26732, Tucson, AZ 85726 (United States); Cimatti, A. [Dipartimento di Astronomia, Universita di Bologna, Via Ranzani 1, I-40127 Bologna (Italy)

2012-11-10T23:59:59.000Z

213

Low-Cost Manufacturable Microchannel Systems for Passive PEM Water Management  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Manufacturable Manufacturable Microchannel Systems for Passive PEM Water Management IIPS Number 16910 Low Low - - Cost Cost Manufacturable Manufacturable Microchannel Systems for Passive Microchannel Systems for Passive PEM Water Management PEM Water Management IIPS Number 16910 IIPS Number 16910 Ward TeGrotenhuis, Susie Stenkamp, Curt Lavender Pacific Northwest National Laboratories Richland, WA HFCIT Kick Off Meeting February 2007 2 Project objective: Create a low cost and passive PEM water management system Project objective: Project objective: Create a low cost Create a low cost and passive PEM water management system and passive PEM water management system Specific Targets Addressed for 3.4.2 Automotive-Scale: 80 kWe Integrated Transportation Fuel Cell Power Systems Operating on Direct Hydrogen

214

Evaluation of the NucleDyne Passive Containment System  

SciTech Connect (OSTI)

This reports contains: (1) an evaluation by Gilbert/Commonwealth (G/C) of the NucleDyne passive Containment System (PCS) as that conceptual design is applied to a Westinghouse, two loop, Pressurized Water Reactor; (2) an evaluation by Westinghouse of two questions about the impact of the PCS on the Nuclear Steam Supply System (NSSS), which were posed by G/C and best answered by an NSSS vendor; and (3) replies to both the Gilbert/Commonwealth report and the Westinghoue report by NucleDyne Engineering Corporation.

None

1981-04-01T23:59:59.000Z

215

The development of a passive dosimeter for airborne aniline vapors  

E-Print Network [OSTI]

passive sampl1ng dosimeter was designed to measure concen- trat1ons of aniline vapor in air. Diffus1on tubes of 1. 5, 3. 0 and 4. 5 cm lengths were tested under controlled conditions of relative humid1ty, air temperature and vapor concentrations. A... of Measured vs Calculated Concentrations APPENDIX D-Student-t Test on Slopes of Measured vs Calculated Data . APPENDIX E-Statistical Analysis of Four Hour Time- Weighted Average Study on 3. 0 cm Dosimeter VITA ~pa e 42 45 48 59 62 63 65 70 73...

Campbell, James Evan

1977-01-01T23:59:59.000Z

216

Power Margin Reduction in Linear passive UHF RFID tag arrays  

E-Print Network [OSTI]

penetration in a distributed Bragg reflector used in optical devices [12]. The structure of the distributed Bragg reflector consists of an alternating sequence of two materials of different optical impedances which can be treated as being similar to a tag... and Applications in Contactless Smart Cards and Identification, 2nd edition, New York, NY USA: Wiley, 2003, pp. 29-180, pp. 229-328. [2] United States Department of Defense Suppliers’ Passive RFID Information Guide, Version 15.0, pp. 20, [Online]. Avilable...

Zhang, Qi; Crisp, Michael; White, Ian H.; Penty, Richard V.

2014-07-17T23:59:59.000Z

217

Disruption Analysis and Response Implicattions of Passive Plates for the NSTX Upgrade  

SciTech Connect (OSTI)

The NSTX upgrade project requires analysis qualifications of existing vacuum vessel and passive stabilizing plates for increased plasma performance. Vertical stability is critically dependent on the passive conducting structure that surrounds the plasma. In this paper, the passive conducting structure is analyzed for the upgrade condition during plasma disruption to ensure the level of stress in the stabilizing plates and the fastener is within its design limits. The counter-bore of the passive plates for bolting is evaluated in details and counter-bore bushing is redesigned to prevent shear failure during disruptions as a result of high pulling and pushing forces, particularly for support at the corner bolts

Yuhu Zhai, Peter Titus, Art Brooks, and Ron Hatcher

2012-08-27T23:59:59.000Z

218

Energy efficient building with the use of passive solar heating technology  

Science Journals Connector (OSTI)

The configuration of a building after redesign for passive solar heating is described. The results of experimental studies of the temperature regimes for various weather conditions are presented.

M. M. Zakhidov

2007-06-01T23:59:59.000Z

219

DRAFT INTERIM REPORT: NATIONAL PROGRAM PLAN FOR PASSIVE AND HYBRID SOLAR HEATING AND COOLING  

E-Print Network [OSTI]

Appendix E indicates energy market penetration for passivepassive program. Energy market penetration for passiveConstruction New Energy Market (quads) Energy Penetration (

Authors, Various

2012-01-01T23:59:59.000Z

220

Low-Cost Manufacturable Microchannel Systems for Passive PEM Water Management  

Broader source: Energy.gov [DOE]

This presentation, which focuses on passive PEM water management, was given by Susie Stenkamp of PNNL at a February 2007 meeting on new fuel cell projects.

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

SciTech Connect: Passivated Tunneling Contacts to N-Type Wafer...  

Office of Scientific and Technical Information (OSTI)

Contacts to N-Type Wafer Silicon and Their Implementation into High Performance Solar Cells: Preprint Citation Details In-Document Search Title: Passivated Tunneling...

222

Sustainable Energy Resources for Consumers Webinar on Building Design & Passive Solar Transcript  

Broader source: Energy.gov [DOE]

Video recording transcript of a Webinar on Nov. 16, 2010 about residential passive solar building design and solar thermal heating applications

223

Mobility changes anonymity: new passive threats in mobile ad hoc networks  

E-Print Network [OSTI]

Anonymity: New Passive Threats in Mobile Ad Hoc Networkson new anonymity threats and classify the correspondingagainst the new anonymity threats in mobile networks. The

Hong, Xiaoyan; Kong, Jiejun; Gerla, Mario

2006-01-01T23:59:59.000Z

224

Passivation of Aluminum in Lithium-ion Battery Electrolytes with LiBOB  

E-Print Network [OSTI]

much greater thermal The passivation of aluminum in batterybattery electrolytes, LiPF 6 does have some shortcomings. In particular, the thermal

Zhang, Xueyuan; Devine, Thomas M.

2008-01-01T23:59:59.000Z

225

Field evaluation of passive capillary samplers in monitoring the leaching of agrochemicals.  

E-Print Network [OSTI]

??Soil solution samplers have certain inadequacies that limit their range of possible applications. Passive Capillary Samplers (PCAPS), which apply suction to the soil pore-water via… (more)

Brandi-Dohrn, Florian M.

1993-01-01T23:59:59.000Z

226

E-Print Network 3.0 - ap1000 advanced passive Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

89, 232102 (Dec 2006) Influence of surface passivation on ultrafast carrier dynamics and terahertz radiation Summary: Appl. Phys. Lett. 89, 232102 (Dec 2006) Influence of surface...

227

Energy and air quality implications of passive stack ventilation in residential buildings  

E-Print Network [OSTI]

Energy and air quality implications of passive stackemployer. Energy and air quality implications of passivean acceptable indoor air quality. Historically, U.S.

Mortensen, Dorthe Kragsig

2011-01-01T23:59:59.000Z

228

E-Print Network 3.0 - antibody conferring passive Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

A passive thread pool implemented with a kernel-level asynchronous I... of business production systems 14. The basic components of the immune system ... Source: Suzuki, Jun...

229

Fundamental Mechanisms of Copper CMP – Passivation Kinetics of Copper in CMP Slurry Constituents  

E-Print Network [OSTI]

Tribochemical Mechanisms of Copper Chemical MechanicalE06-02 Fundamental Mechanisms of Copper CMP – PassivationKinetics of Copper in CMP Slurry Constituents Shantanu

Tripathi, Shantanu; Doyle, F M; Dornfeld, David

2009-01-01T23:59:59.000Z

230

Integration of Full Tensor Gravity and ZTEM Passive Low Frequency EM Instruments for Simultaneous Data Acquisition  

Broader source: Energy.gov [DOE]

Integration of Full Tensor Gravity and ZTEM Passive Low Frequency EM Instruments for Simultaneous Data Acquisition presentation at the April 2013 peer review meeting held in Denver, Colorado.

231

Enhancing reliability in passive anti-islanding protection schemes for distribution systems with distributed generation.  

E-Print Network [OSTI]

??This thesis introduces a new approach to enhance the reliability of conventional passive anti-islanding protection scheme in distribution systems embedding distributed generation. This approach uses… (more)

Sheikholeslamzadeh, Mohsen

2012-01-01T23:59:59.000Z

232

Remotely Interrogated Passive Polarizing Dosimeter (RIPPeD).  

SciTech Connect (OSTI)

Conductive polymers have become an extremely useful class of materials for many optical applications. We have developed an electrochemical growth method for depositing highly conductive ({approx}100 S/cm) polypyrrole. Additionally, we have adapted advanced fabrication methods for use with the polypyrrole resulting in gratings with submicron features. This conductive polymer micro-wire grid provides an optical polarizer with unique properties. When the polymer is exposed to ionizing radiation, its conductivity is affected and the polarization properties of the device, specifically the extinction ratio, change in a corresponding manner. This change in polarization properties can be determined by optically interrogating the device, possibly from a remote location. The result is a passive radiation-sensitive sensor with very low optical visibility. The ability to interrogate the device from a safe standoff distance provides a device useful in potentially dangerous environments. Also, the passive nature of the device make it applicable in applications where external power is not available. We will review the polymer deposition, fabrication methods and device design and modeling. The characterization of the polymer's sensitivity to ionizing radiation and optical testing of infrared polarizers before and after irradiation will also be presented. These experimental results will highlight the usefulness of the conductive infrared polarizer to many security and monitoring applications.

Kemme, Shanalyn A.; Buller, Daniel L.; Dirk, Shawn M.; Boye, Robert R.; Samora, Sally; Washburn, Cody M.; Wheeler, David Roger

2008-09-01T23:59:59.000Z

233

Active-to-Passive Environmental Cleanup Transition Strategies - 13220  

SciTech Connect (OSTI)

The Savannah River Site uses a graded approach to environmental cleanup. The selection of groundwater and vadose zone remediation technologies for a specific contamination area is based on the size, contaminant type, contaminant concentration, and configuration of the plume. These attributes are the result of the nature and mass of the source of contamination and the subsurface characteristics in the area of the plume. Many large plumes consist of several zones that are most efficiently addressed with separate complementary corrective action/remedial technologies. The highest concentrations of contaminants are found in the source zone. The most robust, high mass removal technologies are often best suited for remediation of the source zone. In the primary plume zone, active remedies, such as pump-and-treat, may be necessary to remove contaminants and exert hydraulic control of the plume. In the dilute fringe zone, contaminants are generally lower in concentration and can often be treated with passive techniques. A key determination in achieving an acceptable and cost-effective end state for a given waste unit is when to transition from an active treatment system to a more passive or natural approach (e.g., monitored natural attenuation or enhanced attenuation). This paper will discuss the considerations for such a transition as well as provide examples of successful transitions at the Savannah River Site. (authors)

Gaughan, Thomas F. [Savannah River Nuclear Solutions, Savannah River Site, Aiken, SC 29808 (United States)] [Savannah River Nuclear Solutions, Savannah River Site, Aiken, SC 29808 (United States); Aylward, Robert S.; Denham, Miles E.; Looney, Brian B. [Savannah River National Laboratory, Savannah River Site, Aiken, SC 29808 (United States)] [Savannah River National Laboratory, Savannah River Site, Aiken, SC 29808 (United States); Whitaker, Wade C. [Department of Energy - Savannah River, Savannah River Site, Aiken, SC 29808 (United States)] [Department of Energy - Savannah River, Savannah River Site, Aiken, SC 29808 (United States); Mills, Gary L. [Savannah River Ecology Laboratory, Savannah River Site, Aiken, SC 29808 (United States)] [Savannah River Ecology Laboratory, Savannah River Site, Aiken, SC 29808 (United States)

2013-07-01T23:59:59.000Z

234

Speed-of-light limitations in passive linear media  

E-Print Network [OSTI]

We prove that well-known speed of light restrictions on electromagnetic energy velocity can be extended to a new level of generality, encompassing even nonlocal chiral media in periodic geometries, while at the same time weakening the underlying assumptions to only passivity and linearity of the medium (either with a transparency window or with dissipation). As was also shown by other authors under more limiting assumptions, passivity alone is sufficient to guarantee causality and positivity of the energy density (with no thermodynamic assumptions). Our proof is general enough to include a very broad range of material properties, including anisotropy, bianisotropy (chirality), nonlocality, dispersion, periodicity, and even delta functions or similar generalized functions. We also show that the "dynamical energy density" used by some previous authors in dissipative media reduces to the standard Brillouin formula for dispersive energy density in a transparency window. The results in this paper are proved by exploiting deep results from linear-response theory, harmonic analysis, and functional analysis that had previously not been brought together in the context of electrodynamics.

Aaron Welters; Yehuda Avniel; Steven G. Johnson

2014-05-01T23:59:59.000Z

235

Solar passive ceiling system. Final report. [Passive solar heating system with venetian blind reflectors and latent heat storage in ceiling  

SciTech Connect (OSTI)

The construction of a 1200 square foot building, with full basement, built to be used as a branch library in a rural area is described. The primary heating source is a passive solar system consisting of a south facing window system. The system consists of: a set of windows located in the south facing wall only, composed of double glazed units; a set of reflectors mounted in each window which reflects sunlight up to the ceiling (the reflectors are similar to venetian blinds); a storage area in the ceiling which absorbs the heat from the reflected sunlight and stores it in foil salt pouches laid in the ceiling; and an automated curtain which automatically covers and uncovers the south facing window system. The system is totally passive and uses no blowers, pumps or other active types of heat distribution equipment. The building contains a basement which is normally not heated, and the north facing wall is bermed four feet high around the north side.

Schneider, A.R.

1980-01-01T23:59:59.000Z

236

How to Effectively Compute the Reliability of a Thermal-Hydraulic Nuclear Passive System  

E-Print Network [OSTI]

of a thermal-hydraulic (T-H) passive system of a nuclear power plant can be obtained by i) Monte Carlo (MC1 How to Effectively Compute the Reliability of a Thermal- Hydraulic Nuclear Passive System E. Zio1 be prohibitive because of the large number of (typically long) T-H code simulations that must be performed (one

Boyer, Edmond

237

Method for passive cooling liquid metal cooled nuclear reactors, and system thereof  

DOE Patents [OSTI]

A liquid metal cooled nuclear reactor having a passive cooling system for removing residual heat resulting from fuel decay during reactor shutdown. The passive cooling system comprises a plurality of partitions surrounding the reactor vessel in spaced apart relation forming intermediate areas for circulating heat transferring fluid which remove and carry away heat from the reactor vessel.

Hunsbedt, Anstein (Los Gatos, CA); Busboom, Herbert J. (San Jose, CA)

1991-01-01T23:59:59.000Z

238

Issues about the Integration of Passive and Active Monitoring for Grid Networks  

E-Print Network [OSTI]

Issues about the Integration of Passive and Active Monitoring for Grid Networks S. Andreozzi2 , D.unipi.it,{sergio.andreozzi,antonia.ghiselli}@cnaf.infn.it Abstract. We discuss the integration of passive and active techniques in a Grid monitoring system. We show. 1 Introduction Grid applications require Storage, Computing, and Communication resources, and need

Markatos, Evangelos P.

239

A NEW ROBOT DESIGN TO PASSIVELY DAMP FLEXIBLE ROBOTIC ARMS Louis J. Everett  

E-Print Network [OSTI]

A NEW ROBOT DESIGN TO PASSIVELY DAMP FLEXIBLE ROBOTIC ARMS Louis J. Everett Mechanical robotic arm in which passive dampers eliminate unwanted oscillation. This paper derives and reduces, Modeling, Space Robotics 1. INTRODUCTION Long reach robot arms are being designed and implemented in space

Everett, Louis J.

240

All-Fiber Pulsed Lasers Passively Mode-Locked by Transferable Vertically Aligned Carbon Nanotube Film  

E-Print Network [OSTI]

All-Fiber Pulsed Lasers Passively Mode-Locked by Transferable Vertically Aligned Carbon Nanotube of Tokyo, Tokyo 113-8656, Japan An all-fiber passive laser mode locking is realized with a vertically aligned single-walled carbon nanotube film that can be transferred onto an arbitrary substrate using only

Maruyama, Shigeo

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Increasing output energy from a passively Q-switched Er:glass laser  

E-Print Network [OSTI]

designators, laser range finders, wind metrology, LIDARs, and communication [8­10]. Passive Q- switches have many advantages over active ones. These include low cost, compact size and weight, robustness, and high are passively Q-switched, only the lowest spatial mode can develop. Attempts to increase the pump power in order

Friesem, Asher A.

242

Multivortex micromixing: novel techniques using Dean flows for passive microfluidic mixing  

E-Print Network [OSTI]

MULTIVORTEX MICROMIXING: NOVEL TECHNIQUES USING DEAN FLOWS FOR PASSIVE MICROFLUIDIC MIXING A Dissertation by ARJUN PENUBOLU SUDARSAN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of DOCTOR OF PHILOSOPHY December 2006 Major Subject: Chemical Engineering MULTIVORTEX MICROMIXING: NOVEL TECHNIQUES USING DEAN FLOWS FOR PASSIVE MICROFLUIDIC MIXING A...

Sudarsan, Arjun Penubolu

2007-04-25T23:59:59.000Z

243

Hydrogen effects on stainless steel passive film fracture studied by nanoindentation , L.J. Qiao a,  

E-Print Network [OSTI]

Letter Hydrogen effects on stainless steel passive film fracture studied by nanoindentation Y. Yao. Hydrogen absorption a b s t r a c t Hydrogen effects on the fracture stress of passive film formed on 316L stainless steel were studied by nanoindentation. Hydrogen accumulated primarily on the sample surface

Volinsky, Alex A.

244

Relay Attacks on Passive Keyless Entry and Start Systems in Modern Cars  

E-Print Network [OSTI]

to certain types of relay attacks 1 . Our attack allowed to open and start the car while the true distanceRelay Attacks on Passive Keyless Entry and Start Systems in Modern Cars Aur´elien Francillon, Boris.francillon, boris.danev, srdjan.capkun}@inf.ethz.ch Abstract We demonstrate relay attacks on Passive Keyless Entry

245

Passive sampling methods to determine household and personal care product use  

E-Print Network [OSTI]

Passive sampling methods to determine household and personal care product use DEBORAH H. BENNETTa, cleaning products, passive sampling, SUPERB, longitudinal. Introduction Personal care and household care products, such as cleaning products and pesticides, are frequently used in most house- holds although

Leistikow, Bruce N.

246

Passive Ozone Control Through Use of Reactive Indoor Wall and Ceiling Materials  

E-Print Network [OSTI]

Passive Ozone Control Through Use of Reactive Indoor Wall and Ceiling Materials Paper # 715 Donna A and unpainted drywall as passive ozone control surfaces in a room-sized laboratory chamber. Mean deposition-50%, resulted in increased reactivity for activated carbon. In our model for a typical house, about 35

Siegel, Jeffrey

247

Adhesion Recovery and Passive Peeling in a Wall Climbing Robot using Adhesives  

E-Print Network [OSTI]

Adhesion Recovery and Passive Peeling in a Wall Climbing Robot using Adhesives Casey Kute, Michael results illustrate that a passive peeling mechanism is successful in reducing the required power to peel vertical surfaces are capable of sensing how well they are adhered to the surface. The flat-tailed house

Wood, Robert

248

A Novel Wireless Passive Temperature Sensor Utilizing Microfluidic Principles in Millimeter-Wave  

E-Print Network [OSTI]

A Novel Wireless Passive Temperature Sensor Utilizing Microfluidic Principles in Millimeter. INTRODUCTION A new miniaturized passive and wireless sensing tag is presented, which is based on microfluidic. Preliminary guidelines for a novel generation of wearable, implantable and conformal "smart house"/"smart skin

Tentzeris, Manos

249

Sidewall passivation for InGaN/GaN nanopillar light emitting diodes  

SciTech Connect (OSTI)

We studied the effect of sidewall passivation on InGaN/GaN multiquantum well-based nanopillar light emitting diode (LED) performance. In this research, the effects of varying etch rate, KOH treatment, and sulfur passivation were studied for reducing nanopillar sidewall damage and improving device efficiency. Nanopillars prepared under optimal etching conditions showed higher photoluminescence intensity compared with starting planar epilayers. Furthermore, nanopillar LEDs with and without sulfur passivation were compared through electrical and optical characterization. Suppressed leakage current under reverse bias and four times higher electroluminescence (EL) intensity were observed for passivated nanopillar LEDs compared with unpassivated nanopillar LEDs. The suppressed leakage current and EL intensity enhancement reflect the reduction of non-radiative recombination at the nanopillar sidewalls. In addition, the effect of sulfur passivation was found to be very stable, and further insight into its mechanism was gained through transmission electron microscopy.

Choi, Won Hyuck; Abraham, Michael; Yu, Shih-Ying [Department of Materials Science and Engineering, Pennsylvania State University, University Park, Pennsylvania 16802 (United States); You, Guanjun; Liu, Jie; Wang, Li; Xu, Jian, E-mail: jianxu@engr.psu.edu [Department of Engineering Science and Mechanics, Pennsylvania State University, University Park, Pennsylvania 16802 (United States); Mohney, Suzanne E., E-mail: mohney@ems.psu.edu [Department of Materials Science and Engineering, Pennsylvania State University, University Park, Pennsylvania 16802 (United States); Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802 (United States)

2014-07-07T23:59:59.000Z

250

Passive solar strategies as a logic for improved architectural design: Two prototypes for modular housing  

SciTech Connect (OSTI)

This paper presents a project in which two passive solar housing prototypes were developed for mass production as modular housing. The prototypes have been built and are currently being marketed and thermally monitored. The project received support from the U.S. DOE under its Passive Solar Manufactured Buildings Program. The goal of this project was to develop a prototype which incorporated passive solar technologies into modular housing. Because modular housing is an industrialized product, this incorporation involved relating to a construction process as well as deriving the design of a new product. This paper addresses the issues of modular housing production that impact energy efficiency, passive solar design, and architectural quality. The product's design evolution is described, with emphasis upon how solutions for the prototype(s) were derived in response to factory construction processes, cost, existing and potential markets and the extended goal to improve both energy efficiency and architectural design while introducing passive solar strategies.

Reeder, B.C.

1983-12-01T23:59:59.000Z

251

PASSIVE WIRELESS SURFACE ACOUSTIC WAVE SENSORS FOR MONITORING SEQUESTRATION SITES CO2 EMISSION  

SciTech Connect (OSTI)

University of Pittsburgh’s Transducer lab has teamed with the U.S. Department of Energy’s National Energy Technology Laboratory (DOE NETL) to conduct a comprehensive study to develop/evaluate low-cost, efficient CO2 measuring technologies for geological sequestration sites leakage monitoring. A passive wireless CO2 sensing system based on surface acoustic wave technology and carbon nanotube nanocomposite was developed. Surface acoustic wave device was studied to determine the optimum parameters. Delay line structure was adopted as basic sensor structure. CNT polymer nanocomposite was fabricated and tested under different temperature and strain condition for natural environment impact evaluation. Nanocomposite resistance increased for 5 times under pure strain, while the temperature dependence of resistance for CNT solely was -1375ppm/?. The overall effect of temperature on nanocomposite resistance was -1000ppm/?. The gas response of the nanocomposite was about 10% resistance increase under pure CO2. The sensor frequency change was around 300ppm for pure CO2. With paralyne packaging, the sensor frequency change from relative humidity of 0% to 100% at room temperature decreased from over 1000ppm to less than 100ppm. The lowest detection limit of the sensor is 1% gas concentration, with 36ppm frequency change. Wireless module was tested and showed over one foot transmission distance at preferred parallel orientation.

Wang, Yizhong; Chyu, Minking; Wang, Qing-Ming

2012-11-30T23:59:59.000Z

252

Passive Spectroscopic Diagnostics for Magnetically-confined Fusion Plasmas  

SciTech Connect (OSTI)

Spectroscopy of radiation emitted by impurities and hydrogen isotopes plays an important role in the study of magnetically-confined fusion plasmas, both in determining the effects of impurities on plasma behavior and in measurements of plasma parameters such as electron and ion temperatures and densities, particle transport, and particle influx rates. This paper reviews spectroscopic diagnostics of plasma radiation that are excited by collisional processes in the plasma, which are termed 'passive' spectroscopic diagnostics to distinguish them from 'active' spectroscopic diagnostics involving injected particle and laser beams. A brief overview of the ionization balance in hot plasmas and the relevant line and continuum radiation excitation mechanisms is given. Instrumentation in the soft X-ray, vacuum ultraviolet, ultraviolet, visible, and near-infrared regions of the spectrum is described and examples of measurements are given. Paths for further development of these measurements and issues for their implementation in a burning plasma environment are discussed.

B.C. Stratton, M. Bitter, K.W. Hill, D.L. Hillis, and J.T. Hogan

2007-07-18T23:59:59.000Z

253

Apparatus and process for passivating an SRF cavity  

DOE Patents [OSTI]

An apparatus and process for the production of a niobium cavity exhibiting high quality factors at high gradients is provided. The apparatus comprises a first chamber positioned within a second chamber, an RF generator and vacuum pumping systems. The process comprises placing the niobium cavity in a first chamber of the apparatus; thermally treating the cavity by high temperature in the first chamber while maintaining high vacuum in the first and second chambers; and applying a passivating thin film layer to a surface of the cavity in the presence of a gaseous mixture and an RF field. Further a niobium cavity exhibiting high quality factors at high gradients produced by the method of the invention is provided.

Myneni, Ganapati Rao; Wallace, John P

2014-12-02T23:59:59.000Z

254

The Sandia MEMS passive shock sensor : FY08 design summary.  

SciTech Connect (OSTI)

This report summarizes design and modeling activities for the MEMS passive shock sensor. It provides a description of past design revisions, including the purposes and major differences between design revisions but with a focus on Revisions 4 through 7 and the work performed in fiscal year 2008 (FY08). This report is a reference for comparing different designs; it summarizes design parameters and analysis results, and identifies test structures. It also highlights some of the changes and or additions to models previously documented [Mitchell et al. 2006, Mitchell et al. 2008] such as the way uncertainty thresholds are analyzed and reported. It also includes dynamic simulation results used to investigate how positioning of hard stops may reduce vibration sensitivity.

Walraven, Jeremy Allen; Baker, Michael Sean; Clemens, Rebecca C.; Mitchell, John Anthony; Brake, Matthew Robert; Epp, David S.; Wittwer, Jonathan W.

2008-11-01T23:59:59.000Z

255

Segmented saddle-shaped passive stabilization conductors for toroidal plasmas  

DOE Patents [OSTI]

A large toroidal vacuum chamber for plasma generation and confinement is lined with a toroidal blanket for shielding using modules segmented in the toroidal direction. To provide passive stabilization in the same manner as a conductive vacuum chamber wall, saddle-shaped conductor loops are provided on blanket modules centered on a midplane of the toroidal chamber with horizontal conductive bars above and below the midplane, and vertical conductive legs on opposite sides of each module to provide return current paths between the upper and lower horizontal conductive bars. The close proximity of the vertical legs provided on adjacent modules without making physical contact cancel the electromagnetic field of adjacent vertical legs. The conductive bars spaced equally above and below the midplane simulate toroidal conductive loops or hoops that are continuous, for vertical stabilization of the plasma even though they are actually segmented. 5 figs.

Leuer, J.A.

1990-05-01T23:59:59.000Z

256

Analytical expressions for the gate utilization factors of passive multiplicity counters including signal build-up  

SciTech Connect (OSTI)

In the realm of nuclear safeguards, passive neutron multiplicity counting using shift register pulse train analysis to nondestructively quantify Pu in product materials is a familiar and widely applied technique. The approach most commonly taken is to construct a neutron detector consisting of {sup 3}He filled cylindrical proportional counters embedded in a high density polyethylene moderator. Fast neutrons from the item enter the moderator and are quickly slowed down, on timescales of the order of 1-2 {micro}s, creating a thermal population which then persists typically for several 10's {micro}s and is sampled by the {sup 3}He detectors. Because the initial transient is of comparatively short duration it has been traditional to treat it as instantaneous and furthermore to approximate the subsequent capture time distribution as exponential in shape. With these approximations simple expressions for the various Gate Utilization Factors (GUFs) can be obtained. These factors represent the proportion of time correlated events i.e. Doubles and Triples signal present in the pulse train that is detected by the coincidence gate structure chosen (predelay and gate width settings of the multiplicity shift register). More complicated expressions can be derived by generalizing the capture time distribution to multiple time components or harmonics typically present in real systems. When it comes to applying passive neutron multiplicity methods to extremely intense (i.e. high emission rate and highly multiplying) neutron sources there is a drive to use detector types with very fast response characteristics in order to cope with the high rates. In addition to short pulse width, detectors with a short capture time profile are also desirable so that a short coincidence gate width can be set in order to reduce the chance or Accidental coincidence signal. In extreme cases, such as might be realized using boron loaded scintillators, the dieaway time may be so short that the build-up (thermalization transient) within the detector cannot be ignored. Another example where signal build-up might be observed is when a {sup 3}He based system is used to track the evolution of the time correlated signal created by a higher multiplying item within a reflective configuration such as the measurement of a spent fuel assembly. In this work we develop expressions for the GUFs which include signal build-up.

Croft, Stephen [Los Alamos National Laboratory; Evans, Louise G [Los Alamos National Laboratory; Schear, Melissa A [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

257

Fingerprint detection  

DOE Patents [OSTI]

A method for detection and visualization of latent fingerprints is provided and includes contacting a substrate containing a latent print thereon with a colloidal metal composition for time sufficient to allow reaction of said colloidal metal composition with said latent print, and preserving or recording the observable print. Further, the method for detection and visualization of latent fingerprints can include contacting the metal composition-latent print reaction product with a secondary metal-containing solution for time sufficient to allow precipitation of said secondary metal thereby enhancing the visibility of the latent print, and preserving or recording the observable print.

Saunders, George C. (Rt. 1, Box 428B, Espanola, NM 87532)

1992-01-01T23:59:59.000Z

258

Passive solar design strategies: Remodeling guidelines for conserving energy at home  

SciTech Connect (OSTI)

The idea of passive solar is simple, but applying it effectively does require information and attention to the details of design and construction. Some passive solar techniques are modest and low-cost, and require only small changes in remodeler's typical practice. At the other end of the spectrum, some passive solar systems can almost eliminate a house's need for purchased heating (and in some cases, cooling) energy -- but probably at a relatively high first cost. In between are a broad range of energy-conserving passive solar techniques. Whether or not they are cost-effective, practical and attractive enough to offer a market advantage to any individual remodeler depends on very specific factors such as local costs, climate, and market characteristics. Passive solar design strategies: Remodeling Guidelines For Conserving Energy At Homes is written to help give remodelers the information they need to make these decisions. Passive Solar Design Strategies is a package in three basic parts: The Guidelines contain information about passive solar techniques and how they work, and provides specific examples of systems which will save various percentages of energy; The Worksheets offer a simple, fill-in-the-blank method to pre-evaluate the performance of a specific design; The Worked Example demonstrates how to complete the worksheets for a typical residence.

Not Available

1991-01-01T23:59:59.000Z

259

Passive solar design strategies: Remodeling guidelines for conserving energy at home. [Final report  

SciTech Connect (OSTI)

The idea of passive solar is simple, but applying it effectively does require information and attention to the details of design and construction. Some passive solar techniques are modest and low-cost, and require only small changes in remodeler`s typical practice. At the other end of the spectrum, some passive solar systems can almost eliminate a house`s need for purchased heating (and in some cases, cooling) energy -- but probably at a relatively high first cost. In between are a broad range of energy-conserving passive solar techniques. Whether or not they are cost-effective, practical and attractive enough to offer a market advantage to any individual remodeler depends on very specific factors such as local costs, climate, and market characteristics. Passive solar design strategies: Remodeling Guidelines For Conserving Energy At Homes is written to help give remodelers the information they need to make these decisions. Passive Solar Design Strategies is a package in three basic parts: The Guidelines contain information about passive solar techniques and how they work, and provides specific examples of systems which will save various percentages of energy; The Worksheets offer a simple, fill-in-the-blank method to pre-evaluate the performance of a specific design; The Worked Example demonstrates how to complete the worksheets for a typical residence.

Not Available

1991-12-31T23:59:59.000Z

260

Detection device  

DOE Patents [OSTI]

The present invention is directed to a detection device comprising: (1) an entrance chamber, (2) a central chamber, and (3) an exit chamber. The central chamber includes an ionizing gas, anode, and means for connecting the anode with an external power supply and pulse counter.

Smith, Jay E. (Pittsburgh, PA)

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Principles of passive and active cooling of mirror-based hybrid systems employing liquid metals  

SciTech Connect (OSTI)

This paper presents principles of passive and active cooling that are suitable to mirrorbased hybrid, nuclear fission/fusion systems. It is shown that liquid metal lead-bismuth cooling of the mirror machine with 25 m height and 1.5 GW thermal power is feasible both in the active mode during the normal operation and in the passive mode after the reactor shutdown. In the active mode the achievable required pumping power can well be below 50 MW, whereas the passive mode provides enough coolant flow to keep the clad temperature below the damage limits.

Anglart, Henryk [Div. of Nuclear Technology, School of Engineering Sciences, Royal Institute of Technology Roslagstullsbacken 21, 106-91 Stockholm (Sweden)

2012-06-19T23:59:59.000Z

262

Testing of Passive Safety System Performance for Higher Power Advanced Reactors  

SciTech Connect (OSTI)

This report describes the results of NERI research on the testing of advanced passive safety performance for the Westinghouse AP1000 design. The objectives of this research were: (a) to assess the AP1000 passive safety system core cooling performance under high decay power conditions for a spectrum of breaks located at a variety of locations, (b) to compare advanced thermal hydraulic computer code predictions to the APEX high decay power test data and (c) to develop new passive safety system concepts that could be used for Generation IV higher power reactors.

brian G. Woods; Jose Reyes, Jr.; John Woods; John Groome; Richard Wright

2004-12-31T23:59:59.000Z

263

A PASSIVE SOLAR HEATING SYSTEM COMBINED WITH A HEATPUMP AND A LONG TERM HEAT STORAGE  

Science Journals Connector (OSTI)

ABSTRACT This paper describes the design and the first preliminary performance results of a sunspace attached to an existent building, combined with a heatpump and a long term heat storage. The aim of the project is to study the possibility of storing the excess heat of the passive system in a low temperature storage, which is used as cold source for a heatpump. The advantages of the presented system are that the energy flows in the passive solar system can be controlled and that a rather high solar fraction can be obtained (around .7 to .8 in the climate of Ispra). KEYWORDS Passive solar energy, heat pump, heat storage

D. van Hattem; R. Colombo; P. Actis-Dato

1988-01-01T23:59:59.000Z

264

Using non-verbal social signals and degree centrality to optimise a covert actor's detection scheme for a healthy networked community  

Science Journals Connector (OSTI)

Passive attacks are of the nature of eavesdropping on, monitoring of, transmissions where the attacker's goal is to unnoticeably obtain the information in transmission. Passive attacks are difficult to detect and therefore hard to prevent. The main focus for most research in this area has been on preventing the attacks rather than detecting the attacker for example by data encryption. But encryption by itself falls short because passive attack can occur in more ways than just observing exposed data. Encryption is also not always applicable for example in open wireless communication protocols. With these observations, we aim to design a scheme that reduces such attackers' capability. We introduce the non-verbal social signal deception detection in the investigative module while we optimise the scheme by putting in consideration a participant's centrality given the topology. The results are an intuitive scalable and optimised scheme that detects, investigates, and expels the guilty suspects.

Munene W. Kanampiu

2014-01-01T23:59:59.000Z

265

Methods and systems for remote detection of gases  

DOE Patents [OSTI]

Novel systems and methods for remotely detecting at least one constituent of a gas via infrared detection are provided. A system includes at least one extended source of broadband infrared radiation and a spectrally sensitive receiver positioned remotely from the source. The source and the receiver are oriented such that a surface of the source is in the field of view of the receiver. The source includes a heating component thermally coupled to the surface, and the heating component is configured to heat the surface to a temperature above ambient temperature. The receiver is operable to collect spectral infrared absorption data representative of a gas present between the source and the receiver. The invention advantageously overcomes significant difficulties associated with active infrared detection techniques known in the art, and provides an infrared detection technique with a much greater sensitivity than passive infrared detection techniques known in the art.

Johnson, Timothy J. (Pasco, WA)

2007-11-27T23:59:59.000Z

266

Methods and systems for remote detection of gases  

DOE Patents [OSTI]

Novel systems and methods for remotely detecting at least one constituent of a gas via infrared detection are provided. A system includes at least one extended source of broadband infrared radiation and a spectrally sensitive receiver positioned remotely from the source. The source and the receiver are oriented such that a surface of the source is in the field of view of the receiver. The source includes a heating component thermally coupled to the surface, and the heating component is configured to heat the surface to a temperature above ambient temperature. The receiver is operable to collect spectral infrared absorption data representative of a gas present between the source and the receiver. The invention advantageously overcomes significant difficulties associated with active infrared detection techniques known in the art, and provides an infrared detection technique with a much greater sensitivity than passive infrared detection techniques known in the art.

Johnson, Timothy J

2012-09-18T23:59:59.000Z

267

Amorphous silicon passivated contacts for diffused junction silicon solar cells  

Science Journals Connector (OSTI)

Carrier recombination at the metal contacts is a major obstacle in the development of high-performance crystalline silicon homojunction solar cells. To address this issue we insert thin intrinsic hydrogenated amorphous silicon [a-Si:H(i)] passivating films between the dopant-diffused silicon surface and aluminum contacts. We find that with increasing a-Si:H(i) interlayer thickness (from 0 to 16?nm) the recombination loss at metal-contacted phosphorus (n+) and boron (p+) diffused surfaces decreases by factors of ?25 and ?10 respectively. Conversely the contact resistivity increases in both cases before saturating to still acceptable values of ? 50 m? cm2 for n+ and ?100 m? cm2 for p+ surfaces. Carrier transport towards the contacts likely occurs by a combination of carrier tunneling and aluminum spiking through the a-Si:H(i) layer as supported by scanning transmission electron microscopy–energy dispersive x-ray maps. We explain the superior contact selectivity obtained on n+ surfaces by more favorable band offsets and capture cross section ratios of recombination centers at the c-Si/a-Si:H(i) interface.

J. Bullock; A. Cuevas

2014-01-01T23:59:59.000Z

268

Amorphous silicon passivated contacts for diffused junction silicon solar cells  

SciTech Connect (OSTI)

Carrier recombination at the metal contacts is a major obstacle in the development of high-performance crystalline silicon homojunction solar cells. To address this issue, we insert thin intrinsic hydrogenated amorphous silicon [a-Si:H(i)] passivating films between the dopant-diffused silicon surface and aluminum contacts. We find that with increasing a-Si:H(i) interlayer thickness (from 0 to 16?nm) the recombination loss at metal-contacted phosphorus (n{sup +}) and boron (p{sup +}) diffused surfaces decreases by factors of ?25 and ?10, respectively. Conversely, the contact resistivity increases in both cases before saturating to still acceptable values of ? 50 m? cm{sup 2} for n{sup +} and ?100 m? cm{sup 2} for p{sup +} surfaces. Carrier transport towards the contacts likely occurs by a combination of carrier tunneling and aluminum spiking through the a-Si:H(i) layer, as supported by scanning transmission electron microscopy–energy dispersive x-ray maps. We explain the superior contact selectivity obtained on n{sup +} surfaces by more favorable band offsets and capture cross section ratios of recombination centers at the c-Si/a-Si:H(i) interface.

Bullock, J., E-mail: james.bullock@anu.edu.au; Yan, D.; Wan, Y.; Cuevas, A. [Research School of Engineering, The Australian National University, Canberra, ACT 0200 (Australia); Demaurex, B.; Hessler-Wyser, A.; De Wolf, S. [École Polytechnique Fédérale de Lausanne (EPFL), Institute of micro engineering (IMT), Photovoltaics and Thin Film Electronic Laboratory, Maladière 71, CH-200 Neuchâtel (Switzerland)

2014-04-28T23:59:59.000Z

269

Non-conventional passive sensors for monitoring tritium on surfaces  

SciTech Connect (OSTI)

The authors describe development of small passive, solid-state detectors for in-situ measurements of tritium, or other weak beta-emitting radionuclides, on surfaces. One form of detector operates on the principle of thermally stimulated exoelectron emission (TSEE), the other by discharge of an electret ion chamber (EIC). There are currently two specific types of commercially available detector systems that lend themselves to making surface measurements. One is the thin-film BeO on a graphite disc, and the other is the Teflon EIC. Two other types of TSEE dosimeters (ceramic BeO and carbon doped alumina) are described but lack either a suitable commercially available reader or standardized methods of fabrication. The small size of these detectors allows deployment in locations difficult to access with conventional windowless gas-flow proportional counters. Preliminary testing shows that quantitative measurements are realized with exposure times of 1--10 hours for the TSEE dosimeters (at the DOE release guideline of 5,000 dpm/100 cm{sup 2} for fixed beta contamination). The EIC detectors exhibit an MDA of 26,000 dpm/100 cm{sup 2} for a 24 hour exposure. Both types of integrating device are inexpensive and reusable. Measurements can, therefore, be made that are faster, cheaper, safer, and better than those possible with baseline monitoring technology.

Gammage, R.B.; Brock, J.L.; Meyer, K.E. [Oak Ridge National Lab., TN (United States). Health Sciences Research Div.

1995-06-01T23:59:59.000Z

270

Combined passive magnetic bearing element and vibration damper  

DOE Patents [OSTI]

A magnetic bearing system contains magnetic subsystems which act together to support a rotating element in a state of dynamic equilibrium and dampen transversely directed vibrations. Mechanical stabilizers are provided to hold the suspended system in equilibrium until its speed has exceeded a low critical speed where dynamic effects take over, permitting the achievement of a stable equilibrium for the rotating object. A state of stable equilibrium is achieved above a critical speed by use of a collection of passive elements using permanent magnets to provide their magnetomotive excitation. In a improvement over U.S. Pat. No. 5,495,221, a magnetic bearing element is combined with a vibration damping element to provide a single upper stationary dual-function element. The magnetic forces exerted by such an element, enhances levitation of the rotating object in equilibrium against external forces, such as the force of gravity or forces arising from accelerations, and suppresses the effects of unbalance or inhibits the onset of whirl-type rotor-dynamic instabilities. Concurrently, this equilibrium is made stable against displacement-dependent drag forces of the rotating object from its equilibrium position.

Post, Richard F. (Walnut Creek, CA)

2001-01-01T23:59:59.000Z

271

Passive Two-Phase Cooling of Automotive Power Electronics: Preprint  

SciTech Connect (OSTI)

Experiments were conducted to evaluate the use of a passive two-phase cooling strategy as a means of cooling automotive power electronics. The proposed cooling approach utilizes an indirect cooling configuration to alleviate some reliability concerns and to allow the use of conventional power modules. An inverter-scale proof-of-concept cooling system was fabricated, and tests were conducted using the refrigerants hydrofluoroolefin HFO-1234yf and hydrofluorocarbon HFC-245fa. Results demonstrated that the system can dissipate at least 3.5 kW of heat with 250 cm3 of HFC-245fa. An advanced evaporator design that incorporates features to improve performance and reduce size was conceived. Simulation results indicate its thermal resistance can be 37% to 48% lower than automotive dual side cooled power modules. Tests were also conducted to measure the thermal performance of two air-cooled condensers--plain and rifled finned tube designs. The results combined with some analysis were then used to estimate the required condenser size per operating conditions and maximum allowable system (i.e., vapor and liquid) temperatures.

Moreno, G.; Jeffers, J. R.; Narumanchi, S.; Bennion, K.

2014-08-01T23:59:59.000Z

272

Non-destructive assay of spent nuclear fuel using passive neutron Albedo reactivity  

SciTech Connect (OSTI)

Passive Neutron Albedo Reactivity (PNAR) is one of fourteen techniques that has been researched and evaluated to form part of a comprehensive and integrated detection system for the non-destructive assay (NDA) of spent nuclear fuel. PNAR implemented with {sup 3}He tubes for neutron detection (PNAR-{sup 3}He) is the measurement of time correlated neutrons from a spent fuel assembly with and without a Cadmium (Cd) layer surrounding the assembly. PNAR utilizes the self-interrogation of the fuel via reflection of neutrons born in the fuel assembly back in to the fuel assembly. The neutrons originate primarily from spontaneous fission events within the fuel itself (Curium-244) but are amplified by multiplication. The presence and removal of the Cd provides two measurement conditions with different neutron energy spectra and therefore different interrogating neutron characteristics. Cd has a high cross-section of absorption for slow neutrons and therefore greatly reduces the low energy (thermal) neutron fluence rate returning. The ratios of the Singles, Doubles and Triples count rates obtained in each case are known as the Cd ratios, which are related to fissile content. A potential safeguards application for which PNAR-{sup 3}He is particularly suited is 'fingerprinting'. Fingerprinting could function as an alternative to plutonium (Pu) mass determination; providing confidence that material was not diverted during transport between sites. PNAR-{sup 3}He has six primary NDA signatures: Singles, Doubles and Triples count rates measured with two energy spectra at both shipping and receiving sites. This is to uniquely identify the fuel assembly, and confirm no changes have taken place during transport. Changes may indicate all attempt to divert material for example. Here, the physics of the PNAR-{sup 3}He concept will be explained, alongside a discussion on the development of a prototypical PNAR-{sup 3}He instrument using simulation. The capabilities and performance of the conceptual instrument will be summarized, in the context of (a) quantifying Pu mass in spent fuel assemblies and (b) detecting pin diversion (through a discrepancy between declared and measured properties of the fuel assembly) when the instrument is deployed. These quantitative capabilities are complementary to the 'fingerprinting' capability which is part of ensuring continuity of knowledge and custody of spent nuclear fuel.

Evans, L G [Los Alamos National Laboratory; Schear, M A [Los Alamos National Laboratory; Croft, S [Los Alamos National Laboratory; Tobin, S J [Los Alamos National Laboratory; Swinhoe, M T [Los Alamos National Laboratory; Menlove, H O [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

273

Catalyst Design for Urea-less Passive Ammonia SCR Lean-Burn SIDI...  

Broader source: Energy.gov (indexed) [DOE]

Catalyst Design for Urea-less Passive Ammonia SCR Lean-Burn SIDI Aftertreatment System Chang H. Kim, Kevin Perry, Wei Li, Kushal Narayanaswamy, and Michael Viola Global Research &...

274

Monitoring Agricultural Risk in Canada Using L-Band Passive Microwave Soil Moisture from SMOS  

Science Journals Connector (OSTI)

Soil moisture from Soil Moisture Ocean Salinity (SMOS) passive microwave satellite data was assessed as an information source for identifying regions experiencing climate-related agricultural risk for a period from 2010-2013. Both absolute soil ...

Catherine Champagne; Andrew Davidson; Patrick Cherneski; Jessika L’Heureux; Trevor Hadwen

275

Synchrotron x-ray reflectivity study of oxidation/passivation of copper and silicon.  

SciTech Connect (OSTI)

Synchrotron x-ray-scattering technique studies of copper and silicon electrochemical interfaces are reported. These two examples illustrate the application of synchrotron x-ray techniques for oxidation, passivation, and dissolution of metals and semiconductors.

Chu, Y.; Nagy, Z.; Parkhutik, V.; You, H.

1999-07-21T23:59:59.000Z

276

A novel miniaturized passively Q-switched pulse-burst laser for engine ignition  

Science Journals Connector (OSTI)

A novel miniaturized Cr4+:YAG passively Q-switched Nd:YAG pulse-burst laser under 808 nm diode-laser pulse-pumping was demonstrated for the purpose of laser-induced plasma...

Ma, Yufei; Li, Xudong; Yu, Xin; Fan, Rongwei; Yan, Renpeng; Peng, Jiangbo; Xu, Xinrui; Sun, Rui; Chen, Deying

2014-01-01T23:59:59.000Z

277

Graphene-based passively mode-locked bidirectional fiber ring laser  

Science Journals Connector (OSTI)

We present an all-fiber bidirectional passively mode-locked soliton laser with a graphene-based saturable absorber for the first time to the best of our knowledge. Our design includes...

Mamidala, Venkatesh; Woodward, R I; Yang, Y; Liu, H H; Chow, K K

2014-01-01T23:59:59.000Z

278

DRAFT INTERIM REPORT: NATIONAL PROGRAM PLAN FOR PASSIVE AND HYBRID SOLAR HEATING AND COOLING  

E-Print Network [OSTI]

w/Storage Floor Storage Col , Solar 15. Ground Preheat LA.l-to existing storage assemblies suitable for passive solarwith isolated storage (e.g. , solar ponds) 15. Ground

Authors, Various

2012-01-01T23:59:59.000Z

279

Analysis of passive cardiac constitutive laws for parameter estimation using 3D tagged MRI  

Science Journals Connector (OSTI)

An unresolved issue in patient-specific models of cardiac mechanics is the choice of an appropriate constitutive law, able to accurately capture the passive behavior of the myocardium, while still having uniqu...

Myrianthi Hadjicharalambous…

2014-12-01T23:59:59.000Z

280

A method for using polyethylene passive samplers to measure polycyclic aromatic hydrocarbon chemical activity in sediments  

E-Print Network [OSTI]

In order to aid in the determination of the hazards posed by hydrophobic organic compounds (HOCs) in sediment beds, a method for the use of polyethylene (PE) sheets as passive sampling devices for measuring chemical ...

Fernandez, Loretta A. (Loretta Ana)

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

A passive cooling design for multifamily residences [sic] in hot, humid climates  

E-Print Network [OSTI]

People living in hot, humid climates suffer either from extremely uncomfortable weather conditions or from the great cost of air-conditioning systems for maintaining comfort. Most of the available passive cooling techniques ...

Tang, Joseph C

1983-01-01T23:59:59.000Z

282

Passive solar for urban tenement housing : case study and retrofit design for West-Berlin  

E-Print Network [OSTI]

Studies about residential passive solar heating have been conducted in many countries, mostly dealing with new or existing single family houses and nearly unlimited access to the sun. Only a few studies are related to ...

Lohr, Alexander W

1981-01-01T23:59:59.000Z

283

Systematic biases in measurement of urban nitrogen dioxide using passive diffusion samplers   

E-Print Network [OSTI]

Measurement of nitrogen dioxide using passive diffusion tube over 22 months in Cambridge, U.K. are analysed as a function of sampler exposure time, and compared with NO2 concentrations obtained from a co-located ...

Heal, Mathew R; Kirby, C; Cape, Neil

2000-01-01T23:59:59.000Z

284

Evaluation of method of preparation of passive diffusion tubes for measurement of ambient nitrogen dioxide   

E-Print Network [OSTI]

This study was carried out in response to suggestions that the measurement of NO2 by Palmes-type passive diffusion tubes (PDT) is affected by the method of preparation of the triethanolamine (TEA) absorbent coating on the ...

Hamilton, Richard P; Heal, Mathew R

2004-01-01T23:59:59.000Z

285

Energy and air quality implications of passive stack ventilation in residential buildings  

E-Print Network [OSTI]

to optimize indoor air quality and energy use. The resultsthe indoor air quality and energy use of passive stacks.of the improved air quality is energy consumption increases

Mortensen, Dorthe Kragsig

2011-01-01T23:59:59.000Z

286

Conceptual Design of a Large, Passive Pressure-Tube Light Water Reactor  

E-Print Network [OSTI]

A design for a large, passive, light water reactor has been developed. The proposed concept is a pressure tube reactor of similar design to CANDU reactors, but differing in three key aspects. First, a solid SiC-coated ...

Hejzlar, P.

287

Cladding-pumped passively mode-locked fiber laser generating femtosecond and picosecond pulses  

Science Journals Connector (OSTI)

Passively mode-locked fiber lasers cladding pumped by broad-area diode-laser arrays are described. With a dispersion-compenstated erbium–ytterbium fiber oscillator, 200-fs pulses with...

Fermann, M E; Minelly, J D; Vienne, G G; Harter, D

1996-01-01T23:59:59.000Z

288

A configuration and analysis for damping oscillations in flexible robotic arms using passive elements  

E-Print Network [OSTI]

A hardware configuration that reduces excessive oscillation in flexible robotic arms is presented and analyzed. An experimental apparatus was constructed and proved to effectively damp unwanted oscillations using passive components. Equations...

Compere, Marc Damon

1996-01-01T23:59:59.000Z

289

Passive solar in the city : an energy conscious design for subsidized multi-family housing development  

E-Print Network [OSTI]

Until now, passive solar energy has been overlooked as a viable alternative for home heating in urban subsidized housing. Rather ironically, in housing whose residents could most benefit from the use of solar energy, such ...

Duncan, Karen M

1981-01-01T23:59:59.000Z

290

Passive microwave observations of mesoscale convective systems over the tropical Pacific Ocean  

E-Print Network [OSTI]

This paper presents high resolution passive microwave measurements obtained in the western Pacific warm pool region. These measurements represent the first comprehensive observations of convection over the tropical oceans, and were obtained from...

McGaughey, Gary Rae

2012-06-07T23:59:59.000Z

291

Electronic states of lithium passivated germanium nanowires: An ab-initio study  

SciTech Connect (OSTI)

A study of the electronic and structural properties of germanium nanowires (GeNWs) was performed using the ab-initio Density Functional Theory within the generalized gradient approximation where electron-ion interactions are described by ultrasoft pseudopotentials. To study the effects of the lithium in the surface of the GeNWs we compare the electronic band structures of Hydrogen passivated GeNWs with those of partial and totally Li passivated GeNWs. The nanowires were constructed in the [001], [111] and [110] directions, using the supercell model to create different wire diameters. The results show that in the case of partial Li passivation there are localized orbitals near the valence band maximum, which would create a p-doped-kind of state. The total Li passivation created metallic states for all the wires.

Trejo, A.; Carvajal, E.; Vázquez-Medina, R.; Cruz-Irisson, M. [Instituto Politécnico Nacional, ESIME-Culhuacan, Av. Santa Ana 1000, 04430 D.F. (Mexico)

2014-05-15T23:59:59.000Z

292

DRAFT INTERIM REPORT: NATIONAL PROGRAM PLAN FOR PASSIVE AND HYBRID SOLAR HEATING AND COOLING  

E-Print Network [OSTI]

authorized Domestic Policy Review on Solar Energy, and theDomestic Policy Review concluded that passive solar systemssolar systems have recently received significant support and attention from two major policy

Authors, Various

2012-01-01T23:59:59.000Z

293

Massachusetts Multi-Family Passive Solar Program: recent activities and findings  

SciTech Connect (OSTI)

Passive solar features are being put into new multi-family housing for the elderly throughout Massachusetts. The Multi-Family Passive Solar (MFPS) program provides design and technical assistance to housing agencies, project architects, and engineers. To date, awards totalling almost $2 million have been made to 19 projects including almost 500 passive solar heated apartments. Thirteen are under construction and several are substantially complete. An extensive data base on incremental costs has been developed, and it is found that standard cost estimating techniques may substantially overestimate conservation and passive solar costs. It is indicated that if mechanical systems are intelligently sized to reflect improved conservation features, resultant cost credits may more than offset supposed incremental conservation costs. (LEW)

Rousse, R.E.; Noble, E.C.

1981-01-01T23:59:59.000Z

294

E-Print Network 3.0 - advanced cots passive Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

by Explorit Topic List Advanced Search Sample search results for: advanced cots passive Page: << < 1 2 3 4 5 > >> 1 Automated Software Engineering, 13, 4164, 2006 c 2006 Springer...

295

Self-Acting Power Cylinders for Controls in Passive Solar Buildings  

Science Journals Connector (OSTI)

Passive solar houses may overheat during long periods of sunshine. This could be prevented by using equipment now on the market to deal with the same problem in greenhouses. This contract is to survey the mark...

D. Fitzgerald

1983-01-01T23:59:59.000Z

296

Passive components for dense optical integration based on high index-contrast  

E-Print Network [OSTI]

This work presents a theoretical and numerical investigation of high index-contrast passive components that can serve as building blocks at the end-pointsand nodes of WDM communications systems. The main characteristic of ...

Manolatou, Christina

2001-01-01T23:59:59.000Z

297

Outdoor field evaluation of passive tritiated water vapor samplers at Canadian power reactor sites  

SciTech Connect (OSTI)

Tritium is one of several radioactive nuclides routinely monitored in and around CANDU{reg_sign} (CANada Deuterium Uranium) power reactor facilities. Over the last ten years, passive samplers have replaced active sampling devices for sampling tritiated water vapor in the workplace at many CANDU stations. The potential of passive samplers for outdoor monitoring has also been realized. This paper presents the result of a 1-y field trial carried out at all five Canadian CANDU reactor sites. The results indicate that passive samplers can be used at most sampling locations to measure tritiated water vapor in air concentrations as low as 1 Bq m{sup -3} over a 30-d sampling period. Only in one of the five sampling locations was poor agreement observed between active and passive monitoring data. This location, however, was very windy and it is suspected that the gusty winds were the source of the discrepancies observed. 15 refs., 8 figs., 1 tab.

Wood, M.J. [Chalk River Lab., Chalk River, Ontario (Canada)

1996-02-01T23:59:59.000Z

298

Passive test-cell experiments during the winter of 1979-1980  

SciTech Connect (OSTI)

During the winter of 1979-80 the performance of a variety of passive solar heating configurations in 14 passive test cells were monitored. The cells included attached greenhouses, masonry and water walls with black-chrome absorber surfaces, night insulation, and phase-change thermal storage walls. The results of these side-by-side tests were used to make quantitative comparisons of the delivered performance of these configurations for the conditions under which they were tested.

Hyde, J.C.

1981-11-01T23:59:59.000Z

299

Highly Efficient Multi-crystalline Solar Cells Using Rear Surface Passivation Technology  

Science Journals Connector (OSTI)

Abstract In this work, we have successfully demonstrated the rear side passivation technology applied to multi-crystalline p-type wafers. The AlOx/SiNx stack was selected as rear side passivation layer combined with suitable laser opening source and metallization materials. The performance of multi-crystalline cell reached an efficiency level of 18%-19% applying this technology and the light induced degradation and module power output performance are attractive compared with current cell type.

Yan-Kai Chiou; Hung-Ming Lin; Kuang-Hui Hung; Cheng-Yu Ko; Chia-Hung Wu; Hsieng-Chen Yen; Shyuan-Fang Chen; Nai-Tien Ou; Walt K.W. Huang

2014-01-01T23:59:59.000Z

300

Perfect mode locking of solid-state lasers by a double passive modulation  

SciTech Connect (OSTI)

A new configuration, which incorporates a second passive modulation, has permitted complete selectivity in passive mode locking of solid-state lasers. A theoretical study is presented showing the existence of qualitatively different types of emission depending on the parameters of the system. Computed simulations are made to show the dependence of the emission on such parameters, and are used to determine their optimum range. Experimental results are presented confirming computed predictions.

Martinez, O.E.; Marconi, M.C.; Dicdati, F.P.

1982-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

NCSU Box 7401 Raleigh, NC 27695 (919) 515-3480 Toll Free 1-800-33-NC SUN Passive Solar Options  

E-Print Network [OSTI]

the solar elements. · If you've picked a passive solar house plan, is it designed for North Carolina1 NCSU · Box 7401 · Raleigh, NC 27695 · (919) 515-3480 · Toll Free 1-800-33-NC SUN Passive Solar, you may be considering passive solar design. A passive solar home has four features that distinguish

302

Passive-solar-cooling system concepts for small office buildings. Final report  

SciTech Connect (OSTI)

This report summarizes the efforts of a small group of building design professionals and energy analysis experts to develop passive solar cooling concepts including first cost estimates for small office buildings. Two design teams were brought together at each of two workshops held in the fall of 1982. Each team included an architect, mechanical engineer, structural engineer, and energy analysis expert. This report presents the passive cooling system concepts resulting from the workshops. It summarizes the design problems, solutions and first-cost estimates relating to each technology considered, and documents the research needs identified by the participants in attempting to implement the various technologies in an actual building design. Each design problem presented at the workshops was based on the reference (base case) small office building analyzed as part of LBL's Cooling Assessment. Chapter II summarizes the thermal performance, physical specifications and estimated first-costs of the base case design developed for this work. Chapters III - VI describe the passive cooling system concepts developed for each technology: beam daylighting; mass with night ventilation; evaporative cooling; and integrated passive cooling systems. The final Chapters, VII and VIII present the preliminary implications for economics of passive cooling technologies (based on review of the design concepts) and recommendations of workshop participants for future research in passive cooling for commercial buildings. Appendices provide backup information on each chapter as indicated.

Whiddon, W.I.; Hart, G.K.

1983-02-01T23:59:59.000Z

303

Passive solar multi-family housing: design, development, finance and market strategies  

SciTech Connect (OSTI)

A basis is provided for problem definition of energy and multi-family housing. A comprehensive look at the costs of energy is taken, not just in the cost per Btu, but also in terms of the marginal or replacement cost of energy, the social and environmental costs of consuming imported energy, and at the projected future costs and availability of non-renewable energy supplies. Some reasons are identified why a developer should consider an energy efficient passive solar project, and the roles that each project team should play to achieve the successful project are described. The concepts necessary to understand the physics and design of passive solar systems are introduced. The unique characteristics of multiple housing are covered and basic ideas for the application of solar concepts are provided. Site selection and planning, design considerations for planning the building, design considerations for individual unit designs, and ways to integrate energy efficient and passive solar components in townhouses and apartments are covered. Techniques are covered for energy conscious and solar design and construction, with emphasis on supplying the tools for making decisions at the appropriate times in the design process. Also covered are: the profit motive to develop housing; state and federal programs, present or planned, the encourage passive solar and energy efficient construction; Solar and Conservation Banks; state and federal tax credits; and financial analysis and marketing strategies. The Massachusetts Passive Multi-Family Program is described. Twelve examples of passive solar multifamily projects from around the country are also described. (LEW)

Not Available

1981-01-01T23:59:59.000Z

304

Status Report on the Passive Neutron Enrichment Meter (PNEM) for UF6 Cylinder Assay  

SciTech Connect (OSTI)

The Passive Neutron Enrichment Meter (PNEM) is a nondestructive assay (NDA) system being developed at Los Alamos National Laboratory (LANL). It was designed to determine {sup 235}U mass and enrichment of uranium hexafluoride (UF{sub 6}) in product, feed, and tails cylinders (i.e., 30B and 48Y cylinders). These cylinders are found in the nuclear fuel cycle at uranium conversion, enrichment, and fuel fabrication facilities. The PNEM is a {sup 3}He-based neutron detection system that consists of two briefcase-sized detector pods. A photograph of the system during characterization at LANL is shown in Fig. 1. Several signatures are currently being studied to determine the most effective measurement and data reduction technique for unfolding {sup 235}U mass and enrichment. The system collects total neutron and coincidence data for both bare and cadmium-covered detector pods. The measurement concept grew out of the success of the Uranium Cylinder Assay System (UCAS), which is an operator system at Rokkasho Enrichment Plant (REP) that uses total neutron counting to determine {sup 235}U mass in UF{sub 6} cylinders. The PNEM system was designed with higher efficiency than the UCAS in order to add coincidence counting functionality for the enrichment determination. A photograph of the UCAS with a 48Y cylinder at REP is shown in Fig. 2, and the calibration measurement data for 30B product and 48Y feed and tails cylinders is shown in Fig. 3. The data was collected in a low-background environment, meaning there is very little scatter in the data. The PNEM measurement concept was first presented at the 2010 Institute of Nuclear Materials Management (INMM) Annual Meeting. The physics design and uncertainty analysis were presented at the 2010 International Atomic Energy Agency (IAEA) Safeguards Symposium, and the mechanical and electrical designs and characterization measurements were published in the ESARDA Bulletin in 2011.

Miller, Karen A. [Los Alamos National Laboratory; Swinhoe, Martyn T. [Los Alamos National Laboratory; Menlove, Howard O. [Los Alamos National Laboratory; Marlow, Johnna B. [Los Alamos National Laboratory

2012-05-02T23:59:59.000Z

305

Large passive pressure tube light water reactor with voided calandria  

SciTech Connect (OSTI)

A reactor concept has been developed that can survive loss-of-coolant accidents (LOCAs) without scram and without replenishing primary coolant inventory while maintaining safe temperature limits on the fuel and pressure tube. The proposed concept is a pressure tube reactor of similar design to Canada deuterium uranium reactors but differing in three key aspects. First, a solid silicon carbide-coated graphite fuel matrix is used in place of fuel pin bundles to enable the dissipation of decay heat from the fuel in the absence of primary coolant. Second, the heavy water coolant in the pressure tubes is replaced by light water, which also serves as the moderator. Finally, the calandria tank, surrounded by a graphite reflector, contains a low-pressure gas instead of heavy water moderator, and this normally voided calandria is connected to a light water heat sink. The cover gas displaces the light water from the calandria during normal operation while during a LOCA or loss of heat sink accident, it allows passive calandria flooding. Calandria flooding also provides redundant and diverse reactor shutdown. The fuel elements can operate under post-critical-heat-flux conditions even at full power without exceeding fuel design limits. The heterogeneous arrangement of the fuel and moderator ensures a negative void coefficient under all circumstances. Although light water is used as both coolant and moderator, the reactor exhibits a high degree of neutron thermalization and a large prompt neutron lifetime, similar to D{sub 2}O-moderated cores. Moreover, the extremely large neutron migration length results in a strongly coupled core with a flat thermal flux profile and inherent stability against xenon spatial oscillations.

Hejzlar, P.; Todreas, N.E.; Driscoll, M.J. [Massachusetts Inst. of Tech., Cambridge, MA (United States). Dept. of Nuclear Engineering

1996-02-01T23:59:59.000Z

306

Acoustic Barcodes: Passive, Durable and Inexpensive Notched Identification Tags  

E-Print Network [OSTI]

barcodes with their (un-instrumented) fin- gers. It is also possible to use rings, pens, dry erase markers: the Cricket System [15] uses coded ultrasound pulses to locate and identify users in an instrumented room. Hambone [3] is a wrist-worn acoustic sensor that detects movement of the arms via bone conduction,

Olsen Jr., Dan R.

307

Viscosity solutions of systems of PDEs with interconnected obstacles and Multi modes switching problems  

E-Print Network [OSTI]

This paper deals with existence and uniqueness, in viscosity sense, of a solution for a system of m variational partial differential inequalities with inter-connected obstacles. A particular case of this system is the deterministic version of the Verification Theorem of the Markovian optimal m-states switching problem. The switching cost functions are arbitrary. This problem is connected with the valuation of a power plant in the energy market. The main tool is the notion of systems of reflected BSDEs with oblique reflection.

Hamadène, Said

2011-01-01T23:59:59.000Z

308

Uniqueness of Viscosity Solutions for Optimal Multi-Modes Switching Problem with Risk of default  

E-Print Network [OSTI]

In this paper we study the optimal m-states switching problem in finite horizon as well as infinite horizon with risk of default. We allow the switching cost functionals and cost of default to be of polynomial growth and arbitrary. We show uniqueness of a solution for a system of m variational partial differential inequalities with inter-connected obstacles. This system is the deterministic version of the Verification Theorem of the Markovian optimal m-states switching problem with risk of default. This problem is connected with the valuation of a power plant in the energy market.

Asri, Brahim El

2012-01-01T23:59:59.000Z

309

A branch-and-price algorithm for multi-mode resource leveling  

E-Print Network [OSTI]

Mar 1, 2010 ... We present a branch-and-price approach together with a new heuristic to solve the more general turnaround scheduling problem. Besides ...

Eamonn T. Coughlan

2010-03-01T23:59:59.000Z

310

Accessibility : PUBLIC D.4.1.1 Semantics of multi-mode DAE systems  

E-Print Network [OSTI]

for the evolution and the design of future releases of the Modelica language for such systems. We focus for future releases of Modelica can be drawn. hal-00938891,version1-29Jan2014 #12;D.4.1.1 MODRIO (ITEA 2

Paris-Sud XI, Université de

311

Diesel Engine Advanced Multi-Mode Combustion Control and Generalized Nonlinear Transient Trajectory Shaping Control Methods.  

E-Print Network [OSTI]

?? This dissertation addresses the Diesel engine advanced combustion mode switching transient control and the generalized nonlinear non-equilibrium transient trajectory shaping (NETTS) control problem.Control-oriented models… (more)

Yan, Fengjun

2012-01-01T23:59:59.000Z

312

SNL evaluation of Gigabit Passive Optical Networks (GPON).  

SciTech Connect (OSTI)

Gigabit Passive Optical Networks (GPON) is a networking technology which offers the potential to provide significant cost savings to Sandia National Laboratories in the area of network operations. However, a large scale GPON deployment requires a significant investment in equipment and infrastructure. Before a large scale GPON system was acquired and built, a small GPON system manufactured by Motorola was acquired and tested. The testing performed was to determine the suitability of GPON for use at SNL. This report documents that testing. This report presents test results of GPON system consisting of Motorola and Juniper equipment. The GPON system was tested in areas of data throughput, video conferencing, VOIP, security, and operations and management. The GPON system performed well in almost all areas. GPON will not meet the needs of the low percentage of users requiring a true 1-10 Gbps network connection. GPON will also most likely not meet the need of some servers requiring dedicated throughput of 1-10 Gbps. Because of that, there will be some legacy network connections that must remain. If these legacy network connections can not be reduced to a bare minimum and possibly consolidated to a few locations, any cost savings gained by switching to GPON will be negated by maintaining two networks. A contract has been recently awarded for new GPON equipment with larger buffers. This equipment should improve performance and further reduce the need for legacy network connections. Because GPON has fewer components than a typical hierarchical network, it should be easier to manage. For the system tested, the management was performed by using the AXSVison client. Access to the client must be tightly controlled, because if client/server communications are compromised, security will be an issue. As with any network, the reliability of individual components will determine overall system reliability. There were no failures with the routers, OLT, or Sun Workstation Management platform. There were however four ONTs that failed. Because of the small sample size of 64, and the fact that some of the ONTs were used units, no conclusions can be made. However, ONT reliability is an area of concern. Access to the fiber plant that GPON requires must be tightly controlled and all changes documented. The undocumented changes that were performed in the GPON test lab demonstrated the need for tight control and documentation. In summary, GPON should be able to meet the needs of most network users at Sandia National Laboratories. Because it supports voice, video, and data, it positions Sandia National Laboratories to deploy these services to the desktop. For the majority of corporate network users at Sandia National Laboratories GPON should be a suitable replacement for the legacy network.

Heckart, David G.; Roybal, Glen B.; Walker, Betty R.; Pratt, Thomas Joseph; Gossage, Steven Allen; Trujillo, Sandra M.; Fischer, Bob; Brenkosh, Joseph Peter; Rudolfo, Gerald F.; Dirks, David H.; Schutt, James Alan

2009-08-01T23:59:59.000Z

313

Studies on the Use of Liquid Surface Passivation for Lifetime Measurements on Good-Quality Silicon Wafers  

SciTech Connect (OSTI)

We evaluated several liquid passivants, viz. solutions of iodine ethanol (IE), quinhydrone methanol (QHM), and potassium cyanide (KCN), for measuring minority-carrier lifetime. Lifetime was measured by the WCT-100 (Sinton Instruments) and WT-2000 (Semilab). Our results show that both IE and QHM passivation are reliable mechanisms. We also find that the KCN solution is moderately passivating on oxidized surfaces, but is only minimally effective on bare Si surfaces. This paper presents details of our studies. In particular, the effect of illumination on IE-passivated surfaces and possible reasons for variations in lifetime measurement are discussed.

Devayajanam, S.; Rupnowski, P.; Shet, S.; Sopori, B. L.; Ravindra, N. M.; Caskey, D.; Chang, J.; Covington, J.

2011-01-01T23:59:59.000Z

314

Effects of passive porous walls on the first Mack mode instability of hypersonic boundary layers over a sharp cone.  

E-Print Network [OSTI]

??Passive porous coatings have been proposed in literature as a means of delaying transition to turbulence in hypersonic boundary layers. The nonlinear stability of hypersonic… (more)

Michael, Vipin George

2013-01-01T23:59:59.000Z

315

Reliability analysis of a passive cooling system using a response surface with an application to the Flexible Conversion Ratio Reactor .  

E-Print Network [OSTI]

??A comprehensive risk-informed methodology for passive safety system design and performance assessment is presented and demonstrated on the Flexible Conversion Ratio Reactor (FCRR). First, the… (more)

Fong, Christopher J. (Christopher Joseph)

2008-01-01T23:59:59.000Z

316

Research on ambient temperature passive magnetic bearings at the Lawrence Livermore National Laboratory  

SciTech Connect (OSTI)

Research performed at the Lawrence Livermore National Laboratory on the equilibrium and stability of a new class of ambient-temperature passive bearing systems is described. The basic concepts involved are: (1) Stability of the rotating system is only achieved in the rotating state. That is, disengaging mechanical systems are used to insure stable levitation at rest (when Earnshaw`s theorem applies). (2) Stable levitation by passive magnetic elements can be achieved if the vector sum of the force derivatives of the several elements of the system is net negative (i.e. restoring) for axial, transverse, and tilt-type perturbations from equilibrium. To satisfy the requirements of (2) using only permanent magnet elements we have employed periodic ``Halbach arrays.`` These interact with passive inductive loaded circuits and act as stabilizers, with the primary forces arising from axially symmetric permanent-magnet elements. Stabilizers and other elements needed to create compact passive magnetic bearing systems have been constructed. Novel passive means for stabilizing classes of rotor-dynamic instabilities in such systems have also been investigated.

Post, R.F.; Ryitov, D.D.` Smith, J.R.; Tung, L.S.

1997-04-01T23:59:59.000Z

317

Low temperature front surface passivation of interdigitated back contact silicon heterojunction solar cell  

SciTech Connect (OSTI)

The interdigitated back contact silicon heterojunction (IBC-SHJ) solar cell requires a low temperature front surface passivation/anti-reflection structure. Conventional silicon surface passivation using SiO2 or a-SiNx is performed at temperature higher than 400°C, which is not suitable for the IBC-SHJ cell. In this paper, we propose a PECVD a-Si:H/a-SiNx:H/a-SiC:H stack structure to passivate the front surface of crystalline silicon at low temperature. The optical properties and passivation quality of this structure are characterized and solar cells using this structure are fabricated. With 2 nm a-Si:H layer, the stack structure exhibits stable passivation with effective minority carrier lifetime higher than 2 ms, and compatible with IBC-SHJ solar cell processing. A critical advantage of this structure is that the SiC allows it to be HF resistant, thus it can be deposited as the first step in the process. This protects the a-Si/c-Si interface and maintains a low surface recombination velocity.

Shu, Brent; Das, Ujjwal; Jani, Omkar; Hegedus, Steve; Birkmire, Robert

2009-06-08T23:59:59.000Z

318

Fuel washout detection system  

DOE Patents [OSTI]

A system for detecting grossly failed reactor fuel by detection of particulate matter as accumulated on a filter.

Colburn, Richard P. (Pasco, WA)

1985-01-01T23:59:59.000Z

319

Passive Solar Design for the Home: Energy Efficiency and Renewable Energy Clearinghouse (EREC) Brochure  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

home's windows, walls, and floors home's windows, walls, and floors can be designed to collect, store, and dis- tribute solar energy in the form of heat in the winter and reject solar heat in the sum- mer. This is called passive solar design or climatic design because, unlike active solar heating systems, it doesn't involve the use of mechanical and electrical devices, such as pumps, fans or electrical controls to move the solar heat. To understand how passive solar design works, you first need to understand how heat moves. Heat-Movement Physics As a fundamental law, heat moves from warmer materials to cooler ones until there is no longer a temperature difference between the two. A passive solar building makes use of this law through three heat- movement mechanisms-conduction, con- vection, and radiation-to distribute heat

320

A Passive Tamper Indicating Enclosure For Use Within A Nuclear Weapons Monitoring Regime  

SciTech Connect (OSTI)

AWE and PNNL are engaged in a technical collaboration investigating techniques to enhance continuity of knowledge over Treaty Accountable Items, with emphasis on a verified nuclear weapons dismantlement process. Tamper Indicating Enclosures (TIE) will likely be deployed as part of a chain of custody regime to indicate an unauthorised attempt to access a Treaty Accountable Item, or secure authenticated monitoring equipment. In 2011, the collaboration presented a paper at the INMM annual conference held in Palm Desert, CA titled “Passive Tamper Indicating Enclosures Incorporating Embedded Optical Fibre”, which discussed the concept of integrating optical fibres into TIEs for use as a passive tamper indicating mechanism. This paper provides an update on the Fibre Optic based TIE and introduces a second passive TIE concept based on the use of Poly(Methyl MethAcrylate) (PMMA). Concepts relating to deployment, tamper indication, and unique identification will be discussed.

White, Helen; Tanner, Jennifer E.; Allen, Keir; Benz, Jacob M.; McOmish, Sarah; Simmons, Kevin L.

2012-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Bottom line: comments on incremental costs in the Massachusetts multi-family passive solar housing program  

SciTech Connect (OSTI)

As part of its ongoing Passive Solar Multifamily Housing Program, the Office of Energy Resources performs detailed in-house estimates of incremental passive solar and conservation costs. These estimates are part of an iterative design reviewing process and are used to minimize costs while assuring good system performance. The Office of Energy Resources will finance approved energy conservation and passive solar features in over 20 elderly housing projects presently in various stages of design and construction. Experience gained refining cost-effective designs of these projects is discussed. The discussion includes: isolating and analyzing incremental costs, accruing credits for downsized heating systems, and accounting for soft variables such as additional space and architectural amenity. Cost implications of system type, building scale and geometry, and construction details are outlined, and incremental costs for several specific designs are presented in detail. Much of this information should be applicable to design for single-family and commercial buildings, as well as multi-family housing.

Shannon, R.F.

1980-01-01T23:59:59.000Z

322

High passive-stability diode-laser design for use in atomic-physics experiments  

E-Print Network [OSTI]

We present the design and performance characterization of an external cavity diode-laser system optimized for high stability, low passive spectral linewidth, low cost, and ease of in-house assembly. The main cavity body is machined from a single aluminum block for robustness to temperature changes and mechanical vibrations, and features a stiff and light diffraction-grating arm to suppress low-frequency mechanical resonances. The cavity is vacuum-sealed, and a custom-molded silicone external housing further isolates the system from acoustic noise and temperature fluctuations. Beam shaping, optical isolation, and fiber coupling are integrated, and the design is easily adapted to many commonly used wavelengths. Resonance data, passive-linewidth data, and passive stability characterization of the new design demonstrate that its performance exceeds published specifications for commercial precision diode-laser systems. The design is fully documented and freely available.

Cook, Eryn C; Brown-Heft, Tobias L; Garman, Jeffrey C; Steck, Daniel A

2012-01-01T23:59:59.000Z

323

Long-term passive CANDU containment response after a design-basis accident  

SciTech Connect (OSTI)

A {open_quotes}passive{close_quotes} CANDU{reg_sign} containment system, currently being developed, is aimed at limiting the consequences of a postulated accident, by ensuring the structural integrity of the containment building and limiting fission-product release to within siting dose limits, without operator action or reliance on ac power for up to 3 d. All main functions of the containment system, i.e. energy removal, hydrogen mitigation, and fission-product retention, are to be accomplished passively. The passive CANDU containment relies on the passive emergency water system (PEWS) for energy removal after an accident and on passive autocatalytic recombiners (PAR) for hydrogen removal. The key feature of this concept, is a recirculating, buoyancy-driven flow through the recombiners and the tube banks of the PEWS. This paper presents preliminary design calculations for the PEWS tank and tube banks and a simulation of the long-term passive containment response, based on the current CANDU-6 containment, to a large loss-of-coolant/loss-of- emergency coolant injection (LOCA/LOECI) using the GOTHIC code. It is shown that a 1500-M{sup 3} PEWS tank, connected to tube banks with a total surface area of 1800 m{sup 2}, can limit the second pressure peak to about 300 kPa(a) if a recirculating flow is established in the containment building. The PEWS tank water is boiling in the long term, and the peak containment temperature is 114{degrees}C. 6 refs., 4 figs.

Krause, M.; Mathew, P.M.; Spinks, N.J.; Chin, Y.S. [Atomic Energy of Canada Ltd., Pinawa (Canada)

1997-12-01T23:59:59.000Z

324

Local-Level Prognostics Health Management Systems Framework for Passive AdvSMR Components – Interim Report  

SciTech Connect (OSTI)

This report describes research results to date in support of the integration and demonstration of diagnostics technologies for prototypical AdvSMR passive components (to establish condition indices for monitoring) with model-based prognostics methods. The focus of the PHM methodology and algorithm development in this study is at the localized scale. Multiple localized measurements of material condition (using advanced nondestructive measurement methods), along with available measurements of the stressor environment, enhance the performance of localized diagnostics and prognostics of passive AdvSMR components and systems.

Ramuhalli, Pradeep; Roy, Surajit; Hirt, Evelyn H.; Pardini, Allan F.; Jones, Anthony M.; Deibler, John E.; Pitman, Stan G.; Tucker, Joseph C.; Prowant, Matthew S.; Suter, Jonathan D.

2014-09-12T23:59:59.000Z

325

Graphene-Passivated Nickel as an Oxidation-Resistant Electrode for Spintronics  

E-Print Network [OSTI]

1 Published as: ACS Nano 6, 10930 (2012) DOI: 10.1021/nn304424x Graphene-Passivated Nickel as an Oxidation-Resistant Electrode for Spintronics Bruno Dlubak1, Marie-Blandine Martin2, Robert S. Weatherup1, Heejun Yang2, Cyrile Deranlot2... 4-6, 14195 Berlin, Germany We report on graphene-passivated ferromagnetic electrodes (GPFE) for spin devices. GPFE are shown to act as spin-polarized oxidation-resistant electrodes. The direct coating of nickel with few layer graphene through a...

Dlubak, Bruno; Martin, Marie-Blandine; Weatherup, Robert S.; Yang, Heejun; Deranlot, Cyrile; Blume, Raoul; Schloegl, Robert; Fert, Albert; Anane, Abdelmadjid; Hofmann, Stephan; Seneor, Pierre; Robertson, John

2012-11-12T23:59:59.000Z

326

Ionic-passivated FeS2 photocapacitors for energy conversion and storage  

E-Print Network [OSTI]

KU ScholarWorks | http://kuscholarworks.ku.edu Ionic-passivated FeS2 photocapicitors for energy conversion and storage by Maogang Gong et al. KU ScholarWorks is a service provided by the KU Libraries’ Office of Scholarly Communication & Copyright.... This is the published version of the article, made available with the permission of the publisher. The original published version can be found at the link below. Maogang Gong et al. (2013). Ionic-Passivated FeS2 Photocapacitors for Energy Conversion and Storage...

Gong, Maogang; Kirkeminde, Alec; Kumar, Nardeep; Zhao, Hui; Ren, Shenqiang

2013-08-08T23:59:59.000Z

327

Department of Energy's Passive and Hybrid Solar Manufactured Housing and Building Program: Phase I. Final report  

SciTech Connect (OSTI)

The performance of three preliminary designs of passive solar heating systems for two basic house models is first briefly discussed. Two final designs are treated in detail - an attached greenhouse design and a superinsulated/microload house. The report deals with a description of the designs, their thermal performance and cost, and a critical comparison of the two designs. It is concluded that under mild climate and low mass construction conditions, a superinsulated microload building may be thermally and cost effectively more efficient than other forms of passive building techniques.

Not Available

1981-04-28T23:59:59.000Z

328

Quantum key distribution with passive decoy state selection  

Science Journals Connector (OSTI)

We propose a quantum key distribution scheme which closely matches the performance of a perfect single photon source. It nearly attains the physical upper bound in terms of key generation rate and maximally achievable distance. Our scheme relies on a practical setup based on a parametric downconversion source and present day, nonideal photon-number detection. Arbitrary experimental imperfections which lead to bit errors are included. We select decoy states by classical postprocessing. This allows one to improve the effective signal statistics and achievable distance.

Wolfgang Mauerer and Christine Silberhorn

2007-05-31T23:59:59.000Z

329

Incipient Transient Detection in Reactor Systems: Experimental and Theoretical Investigation  

SciTech Connect (OSTI)

The main goal of this research was to develop a method for detecting reactor system transients at the earliest possible time through a comprehensive experimental, testing and benchmarking program. This approach holds strong promise for developing new diagnostic technologies that are non-intrusive, generic and highly portable across different systems. It will help in the design of new generation nuclear power reactors, which utilize passive safety systems with a reliable and non-intrusive multiphase flow diagnostic system to monitor the function of the passive safety systems. The main objective of this research was to develop an improved fuzzy logic based detection method based on a comprehensive experimental testing program to detect reactor transients at the earliest possible time, practically at their birth moment. A fuzzy logic and neural network based transient identification methodology and implemented in a computer code called PROTREN was considered in this research and was compared with SPRT (Sequentially Probability Ratio Testing) decision and Bayesian inference. The project involved experiment, theoretical modeling and a thermal-hydraulic code assessment. It involved graduate and undergraduate students participation providing them with exposure and training in advanced reactor concepts and safety systems. In this final report, main tasks performed during the project period are summarized and the selected results are presented. Detailed descriptions for the tasks and the results are presented in previous yearly reports (Revankar et al 2003 and Revankar et al 2004).

Lefteri H. Tsoukalas; S.T. Revankar; X Wang; R. Sattuluri

2005-09-27T23:59:59.000Z

330

5-Phenyl-1-H-Tetrazole as a Low-pH Passivating Agent for Copper Chemical Mechanical Planarization  

E-Print Network [OSTI]

5-Phenyl-1-H-Tetrazole as a Low-pH Passivating Agent for Copper Chemical Mechanical Planarization mechanical planarization CMP . An alternative passivation agent, 5-phenyl-1H-tetrazole PTA , is proposed here-10 The focus of the current investigation is 5-phenyl-1H-tetrazole PTA , whose molecular structure is shown

Suni, Ian Ivar

331

Enhanced Performance of Small GaAs Solar Cells via Edge and Surface Passivation with Trioctylphosphine Sulfide  

E-Print Network [OSTI]

Enhanced Performance of Small GaAs Solar Cells via Edge and Surface PassivationAs solar cells. Photoluminescence (PL) measurements indicate monolayers of TOP:S on GaAs significantly" GaAs solar cell (0.31 mm2 ) to test its ability to passivate devices with the relevant dimensions

Atwater, Harry

332

Silicon heterojunction solar cell with passivated hole selective MoOx contact Corsin Battaglia,1,2  

E-Print Network [OSTI]

amorphous silicon layer (a-Si:H) as surface passivation layer.3,4 Carrier selectivity at the contacts is traditionally achieved by depos- iting a doped a-Si:H layer after passivation. With this approach record open coefficient combined with a high defect density, a-Si:H, even when only a few nanometers thin, leads to sig

Javey, Ali

333

Highly luminescent surface-passivated ZnS:Mn nanoparticles by a simple one-step synthesis  

E-Print Network [OSTI]

to the formation of an effective passivation layer induced by lithium, and consequent suppression enhancement afforded by the formation of the passivation layer induced by lithium addition was stud- ied ml , and Mn NO3 2 0.05 g and LiOH·H2O were prepared in distilled water. Zinc acetate solution

Park, Byungwoo

334

ATOMIC-LAYER-DEPOSITED ALUMINUM OXIDE FOR THE SURFACE PASSIVATION OF HIGH-EFFICIENCY SILICON SOLAR CELLS  

E-Print Network [OSTI]

ATOMIC-LAYER-DEPOSITED ALUMINUM OXIDE FOR THE SURFACE PASSIVATION OF HIGH-EFFICIENCY SILICON SOLAR to those measured on reference cells passivated by an aluminum-annealed thermal SiO2, while those of the Al of aluminum ox- ide (Al2O3) grown by atomic layer deposition (ALD) pro- vide an excellent level of sur

335

CONCEPT: N-TYPE SILICON SOLAR CELLS WITH SURFACE-PASSIVATED SCREEN-PRINTED ALUMINUM-ALLOYED REAR EMITTER  

E-Print Network [OSTI]

THE ALU+ CONCEPT: N-TYPE SILICON SOLAR CELLS WITH SURFACE- PASSIVATED SCREEN-PRINTED ALUMINUM stability during firing in a conveyor belt furnace at 900°C. We implement our newly developed passivated Al-p+ emitter into an n + np + solar cell structure, the so-called ALU + cell. An independently confirmed

336

REVIEW OF SCIENTIFIC INSTRUMENTS 83, 043101 (2012) High passive-stability diode-laser design for use  

E-Print Network [OSTI]

-laser system optimized for high stability, low passive spectral linewidth, low cost, and ease of in-house assemREVIEW OF SCIENTIFIC INSTRUMENTS 83, 043101 (2012) High passive-stability diode-laser design-frequency mechanical resonances. The cavity is vacuum sealed, and a custom-molded silicone external housing further

Steck, Daniel A.

337

Idaho Explosives Detection System: Development and Enhancements  

SciTech Connect (OSTI)

The Idaho Explosives Detection System (IEDS) was developed at the Idaho National Laboratory (INL) to respond to threats imposed by delivery trucks carrying bulk explosives into military bases. The system consists of two racks, one on each side of a subject vehicle. Each rack includes a neutron generator and an array of sodium iodide (NaI) detectors. The two neutron generators are pulsed and synchronized. A computer connects to the system by Ethernet and is able to control the system remotely. The system was developed to detect bulk explosives in a medium size truck within a 5-minute measurement time. In 2004, a full-scale prototype IEDS system was built for testing and continued development. System performance was successfully tested using different types of real explosives with a variety of cargo at the INL from November 2005 through February 2006. Recently, the first deployable prototype system was constructed and shipped to Wright-Patterson Air Force Base in Ohio and will be in operation by March 2007. The capability of passively detecting radiological material within a delivery truck has also been added.

Edward L Reber; Larry G. Blackwood; Andrew J. Edwards; Ann E. Egger; Paul J. Petersen

2007-12-01T23:59:59.000Z

338

Combined use of passive sampling and in vitro bioassays for the detection of emerging pollutants in surface water  

E-Print Network [OSTI]

, the monitoring of environmental contaminants in water use discrete sampling but it gives an incomplete picture: nicolas.creusot@ineris.fr 1. Introduction River systems are contaminated by various chemicals, including), progestagen (PR) receptors...] have been shown to be activated by environmental ligands like pesticides

Boyer, Edmond

339

An Evaluation of Cooperation Transmission Considering Practical Energy Models and Passive  

E-Print Network [OSTI]

.e. fixed constellation). Since reception energy costs are significant in WSNs, another quantity that shouldAn Evaluation of Cooperation Transmission Considering Practical Energy Models and Passive Reception. of Microelectronic Engineering, National University of Ireland, Cork, Ireland Abstract--The total energy consumed

Ingram, Mary Ann

340

An optimized Line Sampling method for the estimation of the failure probability of nuclear passive systems  

E-Print Network [OSTI]

The quantitative reliability assessment of a thermal-hydraulic (T-H) passive safety system of a nuclear power plant) to operate [5] and, thus, are expected to improve the safety of nuclear power plants because of simplicity long) T-H code simulations that must be performed (one for each sample) for the statistical estimation

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Colorado Basin 3D Structure and Evolution, Argentine passive J. Autin (1)  

E-Print Network [OSTI]

is predominant in the evolution of the Colorado Basin: (1) the Western segment follows the continental margin evolution. The Colorado Basin is located offshore Argentina, in the Austral segment of the Western1 Colorado Basin 3D Structure and Evolution, Argentine passive margin J. Autin (1) , M. Scheck

Boyer, Edmond

342

Passive-solar techniques for the mobile/modular housing industry  

SciTech Connect (OSTI)

Using a fairly typical mobile home design, it is shown that state-of-the-art mobile/modular housing and passive solar techniques can be used together. Computer simulations are used to analyze the concept. Size conditions at a mobile home park are considered. Glazing orientation, shading, and thermal storage are included in the analysis. (LEW)

Osborn, D.C.

1983-01-31T23:59:59.000Z

343

Critical field index for passive coil stabilization of the spheromak shift instability  

Science Journals Connector (OSTI)

The physics of a shifting spheromakplasma inside a passive stabilization coil is examined. Criteria for the design of these coils are derived for various spheromak current distributions. For realistic coils and force?free plasmas a critical field index is derived above which the coils are ineffective.

G. C. Goldenbaum; R. A. Hess; R. S. Shaw

1986-01-01T23:59:59.000Z

344

Passive Threats among Agents in State Oriented Domains Yair B. Weinberger and Jeffrey S. Rosenschein  

E-Print Network [OSTI]

Passive Threats among Agents in State Oriented Domains Yair B. Weinberger and Jeffrey S systems work considered the notion of threats during negotiation, but in order to do so introduced additional assumptions on the domain. This paper presents a new model of threats among negotiating agents

Rosenschein, Jeff

345

Passively harmonic mode locked erbium doped fiber soliton laser with carbon nanotubes based  

E-Print Network [OSTI]

Passively harmonic mode locked erbium doped fiber soliton laser with carbon nanotubes based. Tokumoto, H. Kataura, and Y. Achiba, "Sub-200-fs pulsed erbium- doped fiber laser using a carbon nanotube fs erbium-doped fiber laser mode locked with a cellulose polymer film containing single-wall carbon

Turitsyn, Sergei K.

346

Passivation effect on gate-bias stress instability of carbon nanotube thin film transistors  

SciTech Connect (OSTI)

A prior requirement of any developed transistor for practical use is the stability test. Random network carbon nanotube-thin film transistor (CNT-TFT) was fabricated on SiO{sub 2}/Si. Gate bias stress stability was investigated with various passivation layers of HfO{sub 2} and Al{sub 2}O{sub 3}. Compared to the threshold voltage shift without passivation layer, the measured values in the presence of passivation layers were reduced independent of gate bias polarity except HfO{sub 2} under positive gate bias stress (PGBS). Al{sub 2}O{sub 3} capping layer was found to be the best passivation layer to prevent ambient gas adsorption, while gas adsorption on HfO{sub 2} layer was unavoidable, inducing surface charges to increase threshold voltage shift in particular for PGBS. This high performance in the gate bias stress test of CNT-TFT even superior to that of amorphous silicon opens potential applications to active TFT industry for soft electronics.

Won Lee, Sang [Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 440-746 (Korea, Republic of); Suh, Dongseok, E-mail: energy.suh@skku.edu [Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 440-746 (Korea, Republic of); Department of Energy Science and Department of Physics, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of); Young Lee, Si [Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 440-746 (Korea, Republic of); Department of Physics, Sungkyunkwan Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of); Hee Lee, Young, E-mail: leeyoung@skku.edu [Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 440-746 (Korea, Republic of); Department of Energy Science and Department of Physics, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of); Department of Physics, Sungkyunkwan Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of)

2014-04-21T23:59:59.000Z

347

CHIPLESS PASSIVE SENSOR FOR WIRELESS MONITORING OF HIGH RADIATION DOSES IN NUCLEAR INFRASTRUCTURES  

E-Print Network [OSTI]

CHIPLESS PASSIVE SENSOR FOR WIRELESS MONITORING OF HIGH RADIATION DOSES IN NUCLEAR INFRASTRUCTURES for Nuclear Research, Otwock, Poland 4 Wroclaw University of Technology, Wroclaw, Poland 5 TRAD, BP 47471, Labège, France ppons@laas.fr ABSTRACT The dosimetry is one of the crucial techniques that are needed

Paris-Sud XI, Université de

348

Design and Simulation of a Passive-Scattering Nozzle in Proton Beam Radiotherapy  

E-Print Network [OSTI]

beam can be either a broad beam or a narrow beam. In this research, we mainly focused on the design and simulation of the broad beam produced by a passive double-scattering system in a treatment nozzle. The NEU codes package is a specialized design tool...

Guan, Fada

2010-07-14T23:59:59.000Z

349

Adaptive Brain-Computer Interface Passive brain-computer interfaces are designed to use  

E-Print Network [OSTI]

Adaptive Brain-Computer Interface Abstract Passive brain-computer interfaces are designed to use brain activity as an additional input, allowing the adaptation of the interface in real time according to the user's mental state. While most current brain computer interface research (BCI) is designed for direct

Boetticher, Gary D.

350

Multi-Experts Analytic Hierarchy Process for the Sensitivity Analysis of Passive Safety Systems  

E-Print Network [OSTI]

Multi-Experts Analytic Hierarchy Process for the Sensitivity Analysis of Passive Safety Systems YU systems to increase their safety and reliability. However, during accidental scenarios, uncertainties Residual Heat Removal system (RHRs) of the High Temperature Reactor-Pebble Modular (HTR-PM). Key words

Paris-Sud XI, Université de

351

Variance Decomposition Sensitivity Analysis of a Passive Residual Heat Removal System Model  

E-Print Network [OSTI]

for improved reliability and safety. Sensitivity analysis can provide relevant insights on the responseVariance Decomposition Sensitivity Analysis of a Passive Residual Heat Removal System Model YU Yua Removal system (RHRs) in the High Temperature Gas-Cooled Reactor (HTGR). Keywords: Uncertainty

Paris-Sud XI, Université de

352

Passive drainage and biofiltration of landfill gas: Results of Australian field trial  

Science Journals Connector (OSTI)

A field scale trial was undertaken at a landfill site in Sydney, Australia (2004–2008), to investigate passive drainage and biofiltration of landfill gas as a means of managing landfill gas emissions from low to moderate gas generation landfill sites. The objective of the trial was to evaluate the effectiveness of a passive landfill gas drainage and biofiltration system at treating landfill gas under field conditions, and to identify and evaluate the factors that affect the behaviour and performance of the system. The trial results showed that passively aerated biofilters operating in a temperate climate can effectively oxidise methane in landfill gas, and demonstrated that maximum methane oxidation efficiencies greater than 90% and average oxidation efficiencies greater than 50% were achieved over the 4 years of operation. The trial results also showed that landfill gas loading was the primary factor that determined the behaviour and performance of the passively aerated biofilters. The landfill gas loading rate was found to control the diffusion of atmospheric oxygen into the biofilter media, limiting the microbial methane oxidation process. The temperature and moisture conditions within the biofilter were found to be affected by local climatic conditions and were also found to affect the behaviour and performance of the biofilter, but to a lesser degree than the landfill gas loading.

Stuart A. Dever; Gareth E. Swarbrick; Richard M. Stuetz

2011-01-01T23:59:59.000Z

353

Passivity Analysis of a Motion Controller for Robot Manipulators with Dynamic Friction  

E-Print Network [OSTI]

Passivity Analysis of a Motion Controller for Robot Manipulators with Dynamic Friction Carlos the motion control in joint space of robot manipulators with friction described by the generalized LuGre friction model. The paper extends the nonadaptive ver- sion of the Slotine and Li's control system

Paris-Sud XI, Université de

354

Layered insulator hexagonal boron nitride for surface passivation in quantum dot solar cell  

SciTech Connect (OSTI)

Single crystalline, two dimensional (2D) layered insulator hexagonal boron nitride (h-BN), is demonstrated as an emerging material candidate for surface passivation on mesoporous TiO{sub 2}. Cadmium selenide (CdSe) quantum dot based bulk heterojunction (BHJ) solar cell employed h-BN passivated TiO{sub 2} as an electron acceptor exhibits photoconversion efficiency ?46% more than BHJ employed unpassivated TiO{sub 2}. Dominant interfacial recombination pathways such as electron capture by TiO{sub 2} surface states and recombination with hole at valence band of CdSe are efficiently controlled by h-BN enabled surface passivation, leading to improved photovoltaic performance. Highly crystalline, confirmed by transmission electron microscopy, dangling bond-free 2D layered h-BN with self-terminated atomic planes, achieved by chemical exfoliation, enables efficient passivation on TiO{sub 2}, allowing electronic transport at TiO{sub 2}/h-BN/CdSe interface with much lower recombination rate compared to an unpassivated TiO{sub 2}/CdSe interface.

Shanmugam, Mariyappan; Jain, Nikhil; Jacobs-Gedrim, Robin; Yu, Bin, E-mail: byu@albany.edu [College of Nanoscale Science and Engineering, State University of New York, Albany, New York 12203 (United States)] [College of Nanoscale Science and Engineering, State University of New York, Albany, New York 12203 (United States); Xu, Yang [Institute of Microelectronics and Optoelectronics, Zhejiang University, Hangzhou 310027 (China)] [Institute of Microelectronics and Optoelectronics, Zhejiang University, Hangzhou 310027 (China)

2013-12-09T23:59:59.000Z

355

Passive liquid dispensing in capillary-based bio-adhesion Research teams Microfluidics Lab, GRASP (ULg)  

E-Print Network [OSTI]

Passive liquid dispensing in capillary-based bio-adhesion Research teams Microfluidics Lab, GRASP-81 (2010) #12;Coalescence strategies in droplet microfluidic systems Research team Microfluidics Lab, GRASP, mechanics) Droplet microfluidics is a new technology that aims at miniaturizing assays in life science (Lab

Wolper, Pierre

356

Fast prototyping and Indirect Adaptive GPC temperature control of a class of passive HVAC  

E-Print Network [OSTI]

parameters, decentralized control, adaptive control. 1 Introduction The energy consumption by the heating of heating and cooling systems with a compression cycle [6], [7]. In addition to the energy cost and the high an alternative system, which is passive and does not use the more typical compression device or absorption-refrigeration

Paris-Sud XI, Université de

357

An experimental investigation of an inclined passive wall solar chimney for natural ventilation  

Science Journals Connector (OSTI)

Abstract Ongoing investigations into solar chimney development have resulted in constantly evolving new designs. In this study, experiments are carried out with an inclined passive wall solar chimney (IPWSC) model with a uniform heat flux on the active (absorptive) wall. The effectiveness of this design has been examined for the heat flux range of 100 W/m2–500 W/m2 with a fixed base air gap width of 0.1 m and inclination angles of the passive wall in the range of 0–6 degrees. The experimental results show that the inclination angle of the passive wall has no significant effect on the temperature distribution across the air gap width and along the chimney height. On the other hand, the averaged air flow velocity across the air gap width is strongly affected by the inclination angle. The experimental results also show that the IPWSC with 0.7 m absorber height and 0.1 m air gap width at an inclination angle of 6° and input heat flux of 500 W/m2 can produce sufficient ventilation for a 27 m3 room based on ASHREA standards. Further, the present experimental results show that the IPWSC design can significantly improve the ventilation performance of a solar chimney in comparison to the conventional chimney design with vertical passive wall configuration. The experimental results are supported by flow visualization experiments and are consistent with scaling predictions.

Rakesh Khanal; Chengwang Lei

2014-01-01T23:59:59.000Z

358

Seasonal Variation in Monthly Average Air Change Rates Using Passive Tracer Gas Measurements  

E-Print Network [OSTI]

of indoor air pollution sources. Concurrently, great efforts are made to make buildings energy efficient 1970s, while less attention has been paid to IAQ. Insufficient venting of indoor air pollutantsSeasonal Variation in Monthly Average Air Change Rates Using Passive Tracer Gas Measurements Marie

Hansen, René Rydhof

359

Entirely passive heat-pipe apparatus capable of operating against gravity  

DOE Patents [OSTI]

The disclosure is directed to an entirely passive heat pipe apparatus capable of operating against gravity for vertical distances in the order of 3 to 7 and more. A return conduit into which an inert gas is introduced is used to lower the specific density of the working fluid so that it may be returned a greater vertical distance from condenser to evaporator.

Koenig, D.R.

1981-02-11T23:59:59.000Z

360

Active and Passive Smoking and the Risk of Pancreatic Cancer in the Netherlands Cohort Study  

Science Journals Connector (OSTI)

...excluded. Ever smokers excluded. Energy-adjusted intake. Table 2...population-based cohort study in Japan-the JPHC study. Cancer Causes...Active cigarette smoking, household passive smoke exposure, and...smoking and pancreatic cancer in Japan. Cancer Causes Control 2002...

Mirjam M. Heinen; Bas A.J. Verhage; R. Alexandra Goldbohm; and Piet A. van den Brandt

2010-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Passive Spectroscopy Bolometers, Grating- And X-Ray Imaging Crystal Spectrometers  

SciTech Connect (OSTI)

This tutorial gives a brief introduction into passive spectroscopy and describes the working principles of bolometers, a high-resolution grating spectrometer, and a novel X-ray imaging crystal spectrometer, which is of particular interest for profile measurements of the ion temperature and plasma rotation velocity on ITER and future burning plasma experiments.

Bitter, M; Hill, K W; Scott, S; Paul, S; Ince-Cushmann, A; Reinke, M; Rice, J; Beiersdorfer, P; Gu, M F; Lee, S G; Broennimann, C; Eikenberry, E F

2007-11-07T23:59:59.000Z

362

New Approaches for Passivation of Crystalline and Amorphous Silicon: Cooperative Research and Development Final Report, CRADA Number CRD-09-351  

SciTech Connect (OSTI)

New approaches of passivating crystalline, multicrystalline, and amorphous silicon will be explored. These will include the use of aqueous solution of KCN and a proprietary composition formulated by Mallinckrodt Baker, Inc. The surface passivation will be compared with that provided by an iodine-ethanol solution, and bulk passivation will be compared with that of H-passivation obtained by silicon nitride, in a fire-through process.

Sopori, B.

2012-09-01T23:59:59.000Z

363

Consistent Regional Heterogeneity of Passive Diastolic Stretch and Systolic Deformation in the Healthy Heart: Age-Related Changes in Left Ventricle Contractility  

Science Journals Connector (OSTI)

Abstract The consistency of the normal spatial distribution of segmental passive stretch (PreS) and systolic strain (SS) within the left ventricle was investigated and a recently proposed echocardiographic estimate of left ventricular (LV) contractility was used to detect contractility changes with age. Hereto, in 54 healthy subjects, segmental PreS and SS were measured on tissue Doppler images of six left ventricle walls. For each subject, a linear regression line was estimated through the segmental PreS and SS values. The slopes and intercepts of this PreS-SS relationship did not differ between age groups, suggesting no changes in LV contractility with age. Moreover, a consistent regional distribution of PreS was observed, with the highest values measured in the septum, resulting in a similar distribution of SS as a direct consequence of the Frank-Starling mechanism.

Ruta Jasaityte; Jan D'hooge; Lieven Herbots; Ana M. Daraban; Frank Rademakers; Piet Claus

2014-01-01T23:59:59.000Z

364

Industrial high performance crystalline silicon solar cells and modules based on rear surface passivation technology  

Science Journals Connector (OSTI)

Abstract Stimulated by the extreme market conditions, the increase in performance and the reduction of manufacturing costs of standard crystalline silicon solar cells and modules have been quite significant in the last years. This progress was achieved mainly by process and material improvements avoiding additional process complexity. As todays cells are predominantly limited by optical and recombination losses at the rear surface, dielectric rear surface passivation represents an obvious approach to overcome the limitations. In recent years several concepts have been developed to implement dielectric rear side passivation into industrial-scale mass production. In this paper a short review is given about the evolution of dielectric rear side passivation technologies as well as on state-of-the-art cell and module results. Simple and cost effective cell and module designs utilizing standard as well as innovative manufacturing technologies are presented. Furthermore, it is shown that for all major steps multiple process options are available to further reduce the manufacturing costs. Using an optimized emitter and screen-printed metallization on commercially available 156 mm×156 mm p-type Czochralski-grown crystalline silicon wafers best cell efficiencies of 19.9% without dielectric rear surface passivation and 21.0% with dielectric rear surface passivation are demonstrated. Replacing the screen-printed front contacts by electroplated nickel–copper contacts record efficiencies of up to 21.3% are reached. By optimizing the module design and materials to reduce the resistive and optical losses, a peak module power of up to 306 W and 19.5% aperture area efficiency are achieved.

Axel Metz; Dennis Adler; Stefan Bagus; Henry Blanke; Michael Bothar; Eva Brouwer; Stefan Dauwe; Katharina Dressler; Raimund Droessler; Tobias Droste; Markus Fiedler; Yvonne Gassenbauer; Thorsten Grahl; Norman Hermert; Wojtek Kuzminski; Agata Lachowicz; Thomas Lauinger; Norbert Lenck; Mihail Manole; Marcel Martini; Rudi Messmer; Christine Meyer; Jens Moschner; Klaus Ramspeck; Peter Roth; Ruben Schönfelder; Berthold Schum; Jörg Sticksel; Knut Vaas; Michael Volk; Klaus Wangemann

2014-01-01T23:59:59.000Z

365

EFFECT OF SiO2 TICKNESSES IN THERMAL-SiO2/PECVD-SiN STACKS ON SURFACE PASSIVATION OF n-TYPE Cz SILICON SUBSTRATES  

E-Print Network [OSTI]

. A prominent example of SiO2 surface passivation is given by the world-record solar cell efficiency of the passivated-emitter and rear locally- diffused (PERL) c-Si solar cell [1]. The surface passivation of the as the standard RCA procedure prior to oxidation in a cleaned quartz furnace tube at high temperat

366

NCSU Box 7401 Raleigh, NC 27695 (919) 515-3480 Toll Free 1-800-33-NC SUN Passive Solar Retrofit  

E-Print Network [OSTI]

SOLAR CENTER INFORMATION Passive solar retrofit is the adding of solar features to an existing house you begin a passive solar retrofit, you should make sure that your house is energy) for your house. You may also want to review passive solar principles described in the Solar Center

367

secondary ion detection | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ion detection secondary ion detection Leads No leads are available at this time. Magnesium behavior and structural defects in Mg+ ion implanted silicon carbide. Abstract: As a...

368

Dynamic final-state nanoparticle-substrate interaction in the photoemission of dodecanethiolate-passivated Ag nanoparticles on graphite substrates  

Science Journals Connector (OSTI)

We have carried out a photoemission study of dodecanethiolate- (DT-) passivated Ag nanoparticles supported on the highly oriented pyrolytic graphite (HOPG) substrates. From detailed photoemission measurements, it is found that the Fermi-level onsets in the photoemission spectra of DT-passivated Ag nanoparticles on the HOPG substrates are not the metallic Fermi edge, with the steep slope being away from the Fermi level. We attribute the unusual spectral features in the vicinity of Fermi level to the dynamic final-state effect in photoemission, indicative of the interaction between the nanoparticle and substrate through the surface passivants on a femtosecond time scale.

Akinori Tanaka; Yuitsu Takeda; Tazumi Nagasawa; Shigeru Sato

2003-01-17T23:59:59.000Z

369

Detector Performance of Ammonium-Sulfide-Passivated CdZnTe and CdMnTe Materials  

SciTech Connect (OSTI)

Dark currents, including those in the surface and bulk, are the leading source of electronic noise in X-ray and gamma detectors, and are responsible for degrading a detector's energy resolution. The detector material itself determines the bulk leakage current; however, the surface leakage current is controllable by depositing appropriate passivation layers. In previous research, we demonstrated the effectiveness of surface passivation in CZT (CdZnTe) and CMT (CdMnTe) materials using ammonium sulfide and ammonium fluoride. In this research, we measured the effect of such passivation on the surface states of these materials, and on the performances of detectors made from them.

Kim, K.H.; Bolotnikov, A.E.; Camarda, G.S.; Marchini, L.; Yang, G.; Hossain, A.; Cui, Y.; Xu, L.; and James, R.B.

2010-08-01T23:59:59.000Z

370

Comprehensive interpretation of passive Q switching and optical bistability in CO/sub 2/ laser with an intracavity saturable absorber  

SciTech Connect (OSTI)

A CO/sub 2/ laser with a saturable absorber shows passive Q switching or optical bistability, depending on the lasing conditions. These characteristics are theoretically analyzed on a comprehensive basis. The conditions under which passive Q switching or optical bistability occurs are investigated on phase diagrams by applying the linear stability analysis to the rate equations that describe the laser system. Exclusive occurrence resulting from the phase-diagram analysis is in good agreement with the present experimental results. The passive Q-switching pulse with an undamped undulation is nicely reproduced through numerical integration of the rate equations.

Tachikawa, M.; Tanii, K.; Shimizu, T.

1987-03-01T23:59:59.000Z

371

Safeguarding Quantum Key Distribution through Detection Randomization  

E-Print Network [OSTI]

We propose and experimentally demonstrate a scheme to render the detection apparatus of a Quantum Key Distribution system immune to the main classes of hacking attacks in which the eavesdropper explores the back-door opened by the single-photon detectors. The countermeasure is based on the creation of modes that are not deterministically accessible to the eavesdropper. We experimentally show that the use of beamsplitters and extra single-photon detectors at the receiver station passively creates randomized spatial modes that erase any knowledge the eavesdropper might have gained when using bright-light faked states. Additionally, we experimentally show a detector-scrambling approach where the random selection of the detector used for each measurement - equivalent to an active spatial mode randomization - hashes out the side-channel open by the detection efficiency mismatch-based attacks. The proposed combined countermeasure represents a practical and readily implementable solution against the main classes of quantum hacking attacks aimed on the single-photon detector so far, without intervening on the inner working of the devices.

Thiago Ferreira da Silva; Gustavo C. do Amaral; Guilherme B. Xavier; Guilherme P. Temporão; Jean Pierre von der Weid

2014-10-02T23:59:59.000Z

372

New energy-conserving passive solar single-family homes. Cycle 5, Category 2 HUD solar heating and cooling demonstration program  

SciTech Connect (OSTI)

The 91 new single-family, energy-conserving passive solar homes described represent award winning designs of the series of five demonstration cycles of the HUD program. Information is presented to help builders and lenders to understand passive solar design, to recognize passive solar buildings, and to provide specific design, construction, and marketing suggestions and details. The first section describes the concept of passive solar energy, explains the various functions which passive solar systems must perform, and discusses the various types of passive systems found in the Cycle 5 projects. The second section discusses each of the 91 solar homes. The third section details the issues of climate requirements and site design concerns, gives examples of building construction, and suggests how to market solar homes. The appendices address more technical aspects of the design and evaluation of passive solar homes.

Not Available

1981-01-01T23:59:59.000Z

373

Passive Solar Design: The Foundation for Low-Energy Federal Buildings  

Broader source: Energy.gov (indexed) [DOE]

Our nation's buildings have a proven influence on Our nation's buildings have a proven influence on how we feel, learn, and work. Some studies indicate that indoor lighting, temperatures, and air quality even affect how much we earn. Our buildings also consume 37% of the energy and 67% of the electricity we use in the United States each year. This electricity is produced mainly by burning fossil fuels that emit gases, such as nitrogen oxide, that can contribute to the nation's air-quality problems. Therefore, the Federal govern- ment, which now owns or occupies more than 500,000 facilities, is taking a look at passive solar and low-energy building designs for both new construction and renovations. Passive solar design strategies involve more than just using large, south-facing windows to capture some of the sun's warmth. They also include the use

374

The pKZ1 transgene as a sensitive passive gene expression reporter for low  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

pKZ1 transgene as a sensitive passive gene expression reporter for low pKZ1 transgene as a sensitive passive gene expression reporter for low dose radiation responses Pamela J Sykes Flinders University and Medical Centre Abstract After high radiation dose exposures, changes in a number of biological endpoints in vivo can be readily observed above the normal background variation that exists in any biological system. Where these responding biological endpoints can be tied to carcinogenic risk, for example, apoptosis, proliferation or chromosomal aberrations, the net effect of the radiation exposure on cancer risk can be surmised. If the biological changes are proportional to radiation dose, then at much lower doses, the biological responses will eventually fall within the range of normal inter-individual and temporal variation, making statistical proof of any

375

The NSTF at Argonne: Passive Safety and Decay Heat Removal for Advanced  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Engineering Engineering Experimentation > RSTA > Natural convection Shutdown heat removal Test Facility (NSTF) Capabilities Engineering Experimentation Reactor Safety Testing and Analysis Overview Nuclear Reactor Severe Accident Experiments MAX NSTF SNAKE Aerosol Experiments System Components Laser Applications Robots Applications Other Facilities Other Capabilities Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr The NSTF at Argonne: Passive Safety and Decay Heat Removal for Advanced Nuclear Reactor Designs 1 2 3 4 5 6 7 8 9 Argonne's Passive Safety Experiments to Support Modern Reactor Design Argonne National Laboratory's Natural convection Shutdown heat removal Test Facility (NSTF) is a state-of-the-art, large-scale facility for evaluating performance capabilities of decay heat removal systems. NSTF's purpose is to:

376

Application of a passive electrochemical noise technique to localized corrosion of candidate radioactive waste container materials  

SciTech Connect (OSTI)

One of the key engineered barriers in the design of the proposed Yucca Mountain repository is the waste canister that encapsulates the spent fuel elements. Current candidate metals for the canisters to be emplaced at Yucca Mountain include cast iron, carbon steel, Incoloy 825 and titanium code-12. This project was designed to evaluate passive electrochemical noise techniques for measuring pitting and corrosion characteristics of candidate materials under prototypical repository conditions. Experimental techniques were also developed and optimized for measurements in a radiation environment. These techniques provide a new method for understanding material response to environmental effects (i.e., gamma radiation, temperature, solution chemistry) through the measurement of electrochemical noise generated during the corrosion of the metal surface. In addition, because of the passive nature of the measurement the technique could offer a means of in-situ monitoring of barrier performance.

Korzan, M.A.

1994-05-01T23:59:59.000Z

377

Contol of integrated mechanical dehumidification and passive cooling systems to produce energy efficient comfort  

SciTech Connect (OSTI)

Detailed computer simulations validated by full scale testing indicate that roof pond type passive cooling systems can provide acceptable residential temperature conditions in all climates of the United States. Passive cooling systems as presently conceived, however, require complementary dehumidification to carry existing latent loads. A study is made of the relative dehumidification efficiencies of conventional air conditioners and an improved mechanical dehumidifier which utilizes sensible cooling recovery. The effects of dew point and dry bulb temperatures, controller set point and humidity band width, infiltration, and climate are evaluated. A simple dehumidifier sizing procedure is presented. Results indicate that the improved dehumidifiers are several times as efficient as conventional air conditioners under desired steady state room conditions. It is also shown that dehumidifier capacities at AHAM test conditions may be misleading if used for design purposes.

Doderer, E.; Marcus, D.; Hoffner, J.

1982-01-01T23:59:59.000Z

378

Effect of inactivity and passive stretch on protein turnover in phasic and postural rat muscles  

SciTech Connect (OSTI)

Muscle atrophy in humans can occur during prolonged bed rest, plaster cast immobilization, and space flight. In the present study, the suspension model used by Musacchia et al. (1983) is employed to investigate changes in protein synthesis and degradation in fast-twitch phasic (extensor digitorum longus) and slow-twitch postural (soleus) muscles in the rat, following hypokinesia and hypodynamia. In addition, the use of passive stretch was examined as a means of preventing atrophy. The obtained results suggest that the mechanisms controlling the processes of protein synthesis and protein breakdown during muscle disuse atrophy may be independent of each other. It appears, however, that the muscle atrophy due to hypokinesia and hypodynamia can be temporarily prevented by passively stretching a muscle. 38 references.

Loughna, P.; Goldspink, G.; Goldspink, D.F.

1986-07-01T23:59:59.000Z

379

Surface passivation of the Ge substrate by novel nitrogen plasma immersion treatment  

Science Journals Connector (OSTI)

In this paper, a novel nitrogen plasma immersion treatment (NNPIT) with accelerating power for Ge surface passivation is presented and compared with conventional nitrogen plasma immersion treatment (NPIT). Results show that the Ge–N bond formed at a surface by NPIT can suppress the growth of Ge suboxide during high-K dielectric deposition. As for NNPIT, more nitrogen plasma drifts to the Ge surface, which is induced by the accelerating electric field, to enhance the dangling bond passivation, and thus the NNPIT method can further suppress Ge suboxide growth during high-K dielectric deposition. As a result, the C–V characteristics in terms of a flat-band voltage, hysteresis and interface state density can be significantly improved, which is promising for high performance Ge MOSFETs fabrication.

Meng Lin; Ming Li; Xia An; Quanxin Yun; Min Li; Zhiqiang Li; Pengqiang Liu; Xing Zhang; Ru Huang

2013-01-01T23:59:59.000Z

380

Passive test cell data for the solar laboratory, Winter 1980-81  

SciTech Connect (OSTI)

Testing was done during the 1980-81 winter in 400 ft/sup 3/ test cells at the Los Alamos National Laboratory Solar Lab. This testing was done primarily to determine the relative efficiency of various passive solar heating concepts and to obtain data that could be used to validate computer simulation programs. The passive solar systems tested were Trombe wall with and without selective absorber, water wall, phase-change wall, direct gain, a heat-pipe collector, and two sunspace geometries. The heating load coefficient of these cells was roughly 26 Btu/h /sup 0/F and the collector area was 23.4 ft/sup 2/, giving a load collector ratio of approximately 27 Btu//sup 0/F day ft/sup 2/. The test cell configurations and instrumentation are detailed herein, and the resulting data and cell efficiencies are discussed.

McFarland, R.D.

1982-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Summertime results from the Class B passive-solar performance-monitoring program  

SciTech Connect (OSTI)

The DOE/SERI Class B passive solar monitoring program is designed to provide, at relatively low cost, accurate and consistent real-time estimates of building thermal performance, as well as detailed data regarding climate, indoor temperatures, and purchased energy needs. As part of this program, a microprocessor-based data acquisition system has been installed in each of ten passive solar houses in the Denver area, primarily to evaluate heating-season performance. During the summer, however, the monitoring systems are used to study the overheating tendencies of the buildings. Examination of the conditions that lead to overheating, using graphical and statistical techniques, will provide insight into the solar design practices that provide the most comfortable summer environment.

Swisher, J.

1981-07-01T23:59:59.000Z

382

Effects of plasma-deposited silicon nitride passivation on the radiation hardness of CMOS integrated circuits  

SciTech Connect (OSTI)

The use of plasma-deposited silicon nitride as a final passivation over metal-gate CMOS integrated circuits degrades the radiation hardness of these devices. The hardness degradation is manifested by increased radiation-induced threshold voltage shifts caused principally by the charging of new interface states and, to a lesser extent, by the trapping of holes created upon exposure to ionizing radiation. The threshold voltage shifts are a strong function of the deposition temperature, and show very little dependence on thickness for films deposited at 300/sup 0/C. There is some correlation between the threshold voltage shifts and the hydrogen content of the PECVD silicon nitride films used as the final passivation layer as a function of deposition temperature. The mechanism by which the hydrogen contained in these films may react with the Si/SiO/sub 2/ interface is not clear at this point.

Clement, J. J.

1980-01-01T23:59:59.000Z

383

Superior Nanoscale Passive Oxide Layers Synthesized Under Photon Irradiation for Environmental Protection  

SciTech Connect (OSTI)

We report on synthesis and functional properties of ultra-thin oxide layers synthesized on metal surfaces by room temperature photon irradiation. We show that the impedance of a passive aluminum oxide film synthesized under ultraviolet photon irradiation is an order of magnitude larger than that of native oxide in a 0.5 M NaCl solution. Further, the structure and impedance of existing native oxide layers can be dramatically improved by minutes-long exposure to photon-irradiation. Depth profiling studies with X-ray photoelectron spectroscopy shows that chlorine uptake in UV-synthesized oxides, compared to that of native oxides, is reduced which can contribute to the improvement in corrosion resistance. The results are of significance to synthesis of ultra-thin passive layers on metal and alloy structures for environmental protection.

Chang, Chia-Lin; Engelhard, Mark H.; Ramanathan, Shriram

2008-06-30T23:59:59.000Z

384

Advancing Explosives Detection Capabilities: Vapor Detection  

ScienceCinema (OSTI)

A new, PNNL-developed method provides direct, real-time detection of trace amounts of explosives such as RDX, PETN and C-4. The method selectively ionizes a sample before passing the sample through a mass spectrometer to detect explosive vapors. The method could be used at airports to improve aviation security.

Atkinson, David

2014-07-24T23:59:59.000Z

385

Characterization of A Novel Avalanche Photodiode for Single Photon Detection in VIS-NIR Range  

E-Print Network [OSTI]

In this work we investigate operation in the Geiger mode of the new single photon avalanche photo diode (SPAD) SAP500 manufactured by Laser Components. This SPAD is sensitive in the range 400-1000nm and has a conventional reach-through structure which ensures good quantum efficiency at the long end of the spectrum. By use of passive and active quenching schemes we investigate detection efficiency, timing jitter, dark counts, afterpulsing, gain and other important parameters and compare them to the "standard" low noise SPAD C30902SH from Perkin Elmer. We conclude that SAP500 offers better combination of detection efficiency, low noise and timing precision.

M. Stipcevic; H. Skenderovic; D. Gracin

2010-04-03T23:59:59.000Z

386

Online, In Situ Monitoring of Combustion Turbines Using Wireless, Passive, Ceramic Sensors  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Online, In Situ Monitoring of Combustion Online, In Situ Monitoring of Combustion Turbines Using Wireless, Passive, Ceramic Sensors Description The United States Department of Energy (DOE) National Energy Technology Laboratory (NETL) is committed to strengthening America's energy security. Central to this mission is to increase the percentage of domestic fuels used to provide for the Nation's energy needs. To this end, DOE-NETL is supporting projects to develop technologies that will improve the efficiency, cost, and environmental performance

387

Analysis of selected surface characteristics and latent heat storage for passive solar space heating  

SciTech Connect (OSTI)

Results are presented of an analysis of the value of various technical improvements in the solar collector and thermal storage subsystems of passive solar residential, agricultural, and industrial systems for two regions of the country. The evaluated improvements are: decreased emissivity and increased absorptivity of absorbing surfaces, decreased reflectivity, and decreased emissivity of glazing surface, and the substitution of sensible heat storage media with phase change materials. The value of each improvement is estimated by the additional energy savings resulting from the improvement.

Fthenakis, V.; Leigh, R.

1981-12-01T23:59:59.000Z

388

Reduced gravity Rankine cycle system design and optimization study with passive vortex phase separation  

E-Print Network [OSTI]

REDUCED GRAVITY RANKINE CYCLE SYSTEM DESIGN AND OPTIMIZATION STUDY WITH PASSIVE VORTEX PHASE SEPARATION A Thesis by KEVIN ROBERT SUPAK Submitted to the Office of Graduate Studies of Texas A&M University... SEPARATION A Thesis by KEVIN ROBERT SUPAK Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved by: Chair of Committee, Frederick...

Supak, Kevin Robert

2008-10-10T23:59:59.000Z

389

Field Validation of Polyethylene Passive Air Samplers for Parent and Alkylated PAHs in Alexandria, Egypt  

Science Journals Connector (OSTI)

Field Validation of Polyethylene Passive Air Samplers for Parent and Alkylated PAHs in Alexandria, Egypt ... In Alexandria for example, eight monitoring stations were established for monitoring the atmospheric quality since the establishment of the Egyptian environmental Law (Law No. 4, 1994). ... Environmental Characterization of Alexandria, Egypt; Egyptian Environmental Affairs Agency: Cairo, 2007; www.eeaa.gov.eg/English/reports/GovProfiles/final/Alex%20Des.pdf. ...

Mohammed A. Khairy; Rainer Lohmann

2012-03-07T23:59:59.000Z

390

Novel passive lossless turn-on snubber for voltage source inverters  

SciTech Connect (OSTI)

A novel passive lossless turn-on snubber with a soft clamped turn-off snubber circuit for voltage source inverters is proposed. The energy trapped in the snubber is recovered into the dc supply and load without any active devices, associated control circuitry, or resistors. The overshoot voltage on the switches is clamped, and the peak switch current is low, making this snubber suitable for use in high-power insulated gate bipolar transistor (IGBT) inverters.

He, X.; Qian, Z.M. [Zhejiang Univ., Hangzhou (China). Dept. of Electrical Engineering; Finney, S.J.; Williams, B.W. [Heriot-Watt Univ., Edinburgh (United Kingdom). Dept. of Computing and Electrical Engineering

1997-01-01T23:59:59.000Z

391

Assessment of passive safety system performance under main steam line break accident  

Science Journals Connector (OSTI)

Abstract A generation III + Boiling Water Reactor (BWR) which relies on natural circulation has evolved from earlier BWR designs by incorporating passive safety features which require no emergency injection pump and no operator action or Alternating Current (AC) power supply. The generation III + BWR’s passive safety systems include the Automatic Depressurization System (ADS), the Suppression Pool (SP), the Standby Liquid Control System (SLCS), the Gravity Driven Cooling System (GDCS), the Isolation Condenser System (ICS), and the Passive Containment Cooling System (PCCS). The ADS is actuated to rapidly depressurize the reactor leading to the GDCS injection. The large amount of water in the SP condenses steam from the reactor. The SLCS provides makeup water to the reactor. The GDCS injects water into the reactor by gravity head and provides cooling to the core. The ICS and the PCCS are used to remove the decay heat from the reactor. The objective of this paper is to analyze the response of passive safety systems under the Loss of Coolant Accident (LOCA). A Main Steam Line Break (MSLB) test has been conducted in the Purdue University Multi-Dimensional Integral Test Assembly (PUMA) which is scaled to represent the generation III + BWR. The main results of PUMA MSLB test were that the reactor coolant level was well above the Top of Active Fuel (TAF) and the reactor containment pressure has remained below the design pressure. In particular, the minimum water level (1.706 m) was 5% higher than the TAF (1.623 m) and the containment maximum pressure (271 kPa) was 35% lower than the safety limit (414 kPa), respectively.

J. Lim; S.W. Choi; J. Yang; D.Y. Lee; S. Rassame; T. Hibiki; M. Ishii

2014-01-01T23:59:59.000Z

392

Assessment of passive safety system performance under gravity driven cooling system drain line break accident  

Science Journals Connector (OSTI)

Abstract A generation III+ Boiling Water Reactor (BWR) which relies on natural circulation has evolved from earlier BWR designs by incorporating passive safety features to improve safety and performance. Natural circulation allows the elimination of emergency injection pump and no operator action or alternating current (AC) power supply. The generation III+ BWR's passive safety systems include the Automatic Depressurization System (ADS), the Suppression Pool (SP), the Standby Liquid Control System (SLCS), the Gravity Driven Cooling System (GDCS), the Isolation Condenser System (ICS) and the Passive Containment Cooling System (PCCS). The ADS is actuated to rapidly depressurize the reactor leading to the GDCS injection. The large amount of water in the SP condenses steam from the reactor. The SLCS provides makeup water to the reactor. The GDCS injects water into the reactor by gravity head and provides cooling to the core. The ICS and the PCCS are used to remove the decay heat from the reactor. The objective of this paper is to analyze the response of passive safety systems under the Loss of Coolant Accident (LOCA). A GDCS Drain Line Break (GDLB) test has been conducted in the Purdue University Multi-Dimensional Integral Test Assembly (PUMA) which is scaled to represent the generation III+ BWR. The main results of PUMA GDLB test were that the reactor coolant level was well above the Top of Active Fuel (TAF) and the reactor containment pressure has remained below the design pressure. In particular, the containment maximum pressure (266 kPa) was 36% lower than the safety limit (414 kPa). The minimum collapsed water level (1.496 m) before the GDCS injection was 8% lower than the TAF (1.623 m) but it was ensured that two-phase water level was higher than the TAF with no core uncovery.

J. Lim; J. Yang; S.W. Choi; D.Y. Lee; S. Rassame; T. Hibiki; M. Ishii

2014-01-01T23:59:59.000Z

393

Enhancements to passive warning devices for use at railroad-highway grade crossings  

E-Print Network [OSTI]

The Oregon PUC has currently installed illumination at over 35 rural passively controlled crossings with regular nighttime train movements. The following specifications have been used for installation. 1. At least one luminaire shall be mounted on each... side of the tracks at the crossing. Luminaires should be located so that warning devices at the crossing will be directly illuminated. 28 2. Luminaires shall be oriented toward the railroad track to provide at least one foot-candle of illumination...

Mynier, Charles Leroy

1992-01-01T23:59:59.000Z

394

A Differential Phase Shift Scheme for Quantum Key Distribution in Passive Optical Networks  

E-Print Network [OSTI]

We propose a scheme for quantum key distribution (QKD) in a passive optical network (PON) based on differential phase shift (DPS) coding. A centralized station including all expensive components serves many users, making it suitable for a true multi-user network in a local environment with moderate distances on the order of a few kilometers. The emphasis lies on an asymmetric design for cost effective implementation of network end points.

Michael Hentschel; Andreas Poppe; Bernhard Schrenk; Momtchil Peev; Edwin Querasser; Roland Lieger

2014-12-19T23:59:59.000Z

395

A surface science investigation of the formation of passivating layers on copper surfaces  

E-Print Network [OSTI]

The corrosion of copper and passive film formation due to various solution exposures has been investigated ex situ with temperature programmed desorption (TPD), X-ray photoelectron spectroscopy (XPS), and Auger electron spectroscopy (AES). With the use of a... specially designed ultra high vacuum chamber, the exposure of thin copper films to corrosive water solutions was performed and subsequently analyzed with AES, XPS, and TPD. The TPD results verified the corrosive nature of chloride and sulfate ions...

Hamelin, Elizabeth I.

2012-06-07T23:59:59.000Z

396

The Sandia MEMS Passive Shock Sensor : FY08 testing for functionality, model validation, and technology readiness.  

SciTech Connect (OSTI)

This report summarizes the functional, model validation, and technology readiness testing of the Sandia MEMS Passive Shock Sensor in FY08. Functional testing of a large number of revision 4 parts showed robust and consistent performance. Model validation testing helped tune the models to match data well and identified several areas for future investigation related to high frequency sensitivity and thermal effects. Finally, technology readiness testing demonstrated the integrated elements of the sensor under realistic environments.

Walraven, Jeremy Allen; Blecke, Jill; Baker, Michael Sean; Clemens, Rebecca C.; Mitchell, John Anthony; Brake, Matthew Robert; Epp, David S.; Wittwer, Jonathan W.

2008-10-01T23:59:59.000Z

397

Hydrogen passivation of EL2 defects and H2*-like complex formation in gallium arsenide  

Science Journals Connector (OSTI)

A complex formed by one As antisite (AsGa), one As, and two H atoms is proposed, in GaAs, which is reminiscent of the H2* defect in crystalline Si and properly accounts for the hydrogen neutralization of the EL2 deep donor activity. It is noticeably stable, in agreement with experimental results. The geometry and electronic structure of this complex present interesting connections with those of the isolated As antisite which clarify the EL2 passivation mechanism.

A. Amore Bonapasta

1995-02-15T23:59:59.000Z

398

SOME ANALYTIC MODELS OF PASSIVE SOLAR BUILDING PERFORMANCE: A THEORETICAL APPROACH TO THE DESIGN OF ENERGY-CONSERVING BUILDINGS  

E-Print Network [OSTI]

CONSERVATION IN BUILDINGS AND ANALYTIC MODELING Footnotes tobuilding -- and so are inaccurate for passive solar modeling.modeling described above for only one specific hour and one specific building

Goldstein, David Baird

2011-01-01T23:59:59.000Z

399

Influence of surface passivation on the minority carrier lifetime, Fe-B pair density and recombination center concentration  

Science Journals Connector (OSTI)

Three kinds of methods (0.08 mol/L iodine in ethanol, SiN x :H, and 40% HF) are used to passivate solar-grade Czochralski (Cz) silicon wafers. Thereafter, minority carrier lifeti...

Feng Li; ZhongQuan Ma; XiaJie Meng; Peng Lü; ZhengShan Yu…

2010-06-01T23:59:59.000Z

400

Buildilng America Whole-House Solutions for New Homes: Hood River Passive House- Hood River, Oregon (Fact Sheet)  

Broader source: Energy.gov [DOE]

The Hood River Passive Project incorporates high R-Value assemblies, extremely tight construction, high performance doors and windows, solar thermal DHW, heat recovery ventilation, moveable external shutters and a high performance ductless minisplit heat pump.

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Building America Whole-House Solutions for New Homes: Hood River Passive House- Hood River, Oregon (Fact Sheet)  

Broader source: Energy.gov [DOE]

The Hood River Passive Project incorporates high R-Value assemblies, extremely tight construction, high performance doors and windows, solar thermal DHW, heat recovery ventilation, moveable external shutters and a high performance ductless minisplit heat pump.

402

Reliability analysis of a passive cooling system using a response surface with an application to the Flexible Conversion Ratio Reactor  

E-Print Network [OSTI]

A comprehensive risk-informed methodology for passive safety system design and performance assessment is presented and demonstrated on the Flexible Conversion Ratio Reactor (FCRR). First, the methodology provides a framework ...

Fong, Christopher J. (Christopher Joseph)

2008-01-01T23:59:59.000Z

403

SiGe receiver front ends and flip-chip integrated wideband antennas for millimeter-wave passive imaging  

E-Print Network [OSTI]

SiGe wideband 77-GHz and 94-GHz front end receivers with integrated antennas for passive imaging have been designed and characterized. These front end systems exhibit wideband performance with the highest gain and lowest ...

Powell, Johnna, 1980-

2009-01-01T23:59:59.000Z

404

Proceedings of Healthy Buildings 2009 Paper 535 HVAC filters as "passive" samplers: fate analysis of indoor particles  

E-Print Network [OSTI]

Proceedings of Healthy Buildings 2009 Paper 535 HVAC filters as "passive" samplers: fate analysis the effectiveness of using HVAC filters as an indoor sampling technique. #12;Proceedings of Healthy Buildings 2009

Siegel, Jeffrey

405

The experimental implementation and comparison of active, semiactive, and passive vehicle suspensions utilizing a linear electric motor  

E-Print Network [OSTI]

The primary objective of this research is the investigation of the experimental implementation of an active automobile suspension, three types of semiactive suspensions, and a passive suspension. These suspensions are realized via computer control...

Williams, Monte Glen

2012-06-07T23:59:59.000Z

406

Simplified point defect model for growth of anodic passive films on Balaji Krishnamurthy, Ralph E. White 1  

E-Print Network [OSTI]

diffraction [1], contact electric impedance and resistance measurements [2], and electrochemical scan- ning passive oxide film on the surface of iron. The model postulates a reduced set of elementary interfacial

407

Active charge/passive discharge solar heating systems: thermal analysis and performance comparisons  

SciTech Connect (OSTI)

This study analyzes the performance of active charge/passive discharge solar space heating systems. This type of system combines liquid-cooled solar collector panels with a massive integral storage component that passively heats the building interior by radiation and free convection. The TRNSYS simulation program is used to evaluate system performance and to provide input for the development of a simplified analysis method. This method, which provides monthly calculations of delivered solar energy, is based on Klein's Phi-bar procedure and data from hourly TRNSYS simulations. The method can be applied to systems using a floor slab, a structural wall, or a water tank as the storage component. Important design parameters include collector area and orientation, building heat loss, collector and heat-exchanger efficiencies, storage capacity, and storage-to-room coupling. Performance simulation results are used for comparisons with active and passive solar designs. Economic comparisons are based on these data and additional system features, such as cooling augmentation and integration of heating components with structural members.

Swisher, J.

1981-06-01T23:59:59.000Z

408

Core and System Design of Reduced-Moderation Water Reactor with Passive Safety Features  

SciTech Connect (OSTI)

In order to ensure the sustainable energy supply in Japan, research and developments of reduced-moderation water reactor (RMWR) have been performed. The RMWR can attain the favorable characteristics such as high burn-up, long operation cycle, multiple recycling of plutonium and effective utilization of uranium resources, based on the matured LWR technologies. MOX fuel assemblies in the tight-lattice fuel rod arrangement are used to reduce the moderation of neutron, and hence, to increase the conversion ratio. The conceptual design has been accomplished for the small 330 MWe RMWR core with the discharge burn-up of 60 GWd/t and the operation cycle of 24 months, under the natural circulation cooling of the core. A breeding ratio of 1.01 and the negative void reactivity coefficient are simultaneously realized in the design. In the plant system design, the passive safety features are intended to be utilized mainly to improve the economy. At present, a hybrid one under the combination of the passive and the active components, and a fully passive one are proposed. The former has been evaluated to reduce the cost for the reactor components. (authors)

Iwamura, Takamichi; Okubo, Tsutomu; Yonomoto, Taisuke [Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki-ken, 319-1195 (Japan); Takeda, Renzo; Moriya, Kumiaki [Hitachi, Ltd. (Japan); Kanno, Minoru [The Japan Atomic Power Company (Japan)

2002-07-01T23:59:59.000Z

409

Ammonia Generation over TWC for Passive SCR NOX Control for Lean Gasoline Engines  

SciTech Connect (OSTI)

A commercial three-way catalyst (TWC) was evaluated for ammonia (NH3) generation on a 2.0-liter BMW lean burn gasoline direct injection engine as a component in a passive ammonia selective catalytic reduction (SCR) system. The passive NH3 SCR system is a potential low cost approach for controlling nitrogen oxides (NOX) emissions from lean burn gasoline engines. In this system, NH3 is generated over a close-coupled TWC during periodic slightly rich engine operation and subsequently stored on an underfloor SCR catalyst. Upon switching to lean, NOX passes through the TWC and is reduced by the stored NH3 on the SCR catalyst. NH3 generation was evaluated at different air-fuel equivalence ratios at multiple engine speed and load conditions. Near complete conversion of NOX to NH3 was achieved at =0.96 for nearly all conditions studied. At the =0.96 condition, HC emissions were relatively minimal, but CO emissions were significant. Operation at AFRs richer than =0.96 did not provide more NH3 yield and led to higher HC and CO emissions. Results of the reductant conversion and consumption processes were used to calculate a representative fuel consumption of the engine operating with an ideal passive SCR system. The results show a 1-7% fuel economy benefit at various steady-state engine speed and load points relative to a stoichiometric engine operation.

Prikhodko, Vitaly Y [ORNL] [ORNL; Parks, II, James E [ORNL; Pihl, Josh A [ORNL] [ORNL; Toops, Todd J [ORNL] [ORNL

2014-01-01T23:59:59.000Z

410

Reliability assessment of Passive Containment Cooling System of an Advanced Reactor using APSRA methodology  

Science Journals Connector (OSTI)

Abstract Passive Systems are increasingly playing a prominent role in the advanced nuclear reactor systems and are being utilised in normal operations as well as safety systems of the reactors following an accident. The Passive Containment Cooling System (PCCS) is one of the several passive safety features in an Advanced Reactor (AHWR). In this paper, the APSRA methodology has been employed for reliability evaluation of the PCCS of AHWR. Performance assessment of the PCCS is initially performed during a postulated design basis LOCA using the best-estimate code RELAP5/Mod 3.2. The parameters affecting the system performance are then identified and considered for further analysis. Based on some pre-determined failure criterion, the failure surface for the system is predicted using the best-estimate code taking into account the deviations of the identified parameters from their nominal states as well as the model uncertainties inherent to the best estimate code. Root diagnosis is then carried out to determine the various failure causes, which occurs mainly due to malfunctioning of mechanical components. The failure probabilities of the various components are assessed through a classical PSA treatment using generic data. The reliability of the PCCS is then evaluated from the probability of availability of these components.

Mukesh Kumar; Aranyak Chakravarty; A.K. Nayak; Hari Prasad; V. Gopika

2014-01-01T23:59:59.000Z

411

Interface magnetism of iron grown on sulfur and hydrogen passivated GaAs(001)  

SciTech Connect (OSTI)

Sulfur (S) and hydrogen (H) atom passivated GaAs(001) templates were used for deposition of ultrathin crystalline Fe films using molecular beam epitaxy, where the Fe thickness ranged from 10 to 45 atomic layers. Reflection high-energy electron diffraction patterns showed that the S- and H-passivated surfaces had no and very weak (1 x 2) superlattice reconstructions, respectively. This indicates that these GaAs(001) templates have a square-like symmetry. Magnetic anisotropies were investigated using the in-plane angular dependence of ferromagnetic resonance at 36 GHz. The in-plane cubic and uniaxial anisotropies and perpendicular uniaxial field were described by bulk and interface contributions, indicating that the Fe films have a high lattice coherence. The magnetic properties of the Fe films were compared to those grown on more commonly used GaAs(001) templates having a (4 x 6) reconstruction with an As-rich in-plane uniaxial symmetry. The Fe films grown on S-passivated templates exhibited unique magnetic properties caused by a decreased lattice spacing compared to the bulk Fe.

Kardasz, B.; Watkins, S. P.; Montoya, E. A.; Burrowes, C.; Girt, E.; Heinrich, B.

2012-04-01T23:59:59.000Z

412

History of proposed Acoustical Society standard on “Underwater Passive Acoustic Monitoring for Bioacoustic Applications”.  

Science Journals Connector (OSTI)

In 2005 an ASA working group was formed to examine whether a standard should exist for “Passive Acoustic Monitoring for Marine Mammal Mitigation for Seismic Surveys”. Public discussions at subsequent meetings quickly showed that no consensus existed for specifying hardware requirements for passive acoustic measurements but consensus did seem possible for specifying “minimum requirements for recording and reporting bioacoustic data”. The proposed standard was renamed “Underwater Passive Acoustic Monitoring for Bioacoustic Applications” with three defined goals: (1) providing a set of requirements for information to be documented while recording acoustic data at sea (metadata requirements); (2) detailing the minimum information about acoustic hardware and software to be included when reporting results in gray or peer?reviewed literature; and (3) specifying metrics to be used when summarizing the features of an acoustic signal such as signal?to?noise ratio. A set of recommended best?practice procedures and equipment capabilities would also be included as an informative annex. After languishing for several years an attempt is being made to develop the standard further. This presentation describes the ASA standard outlines the development process and sketches the current thinking on the standard with an emphasis on the metrics portion.

Aaron Thode; David K. Mellinger

2010-01-01T23:59:59.000Z

413

Large resource development projects as markets for passive solar technologies. Final report  

SciTech Connect (OSTI)

A basic premise of this study is that large resource development projects provide a major market opportunity for passive solar manufactured buildings. The primary objectives of the work are to document selected resource development projects and identify their potential housing needs and development schedules, to contact resource industry representatives and assess some of the processes and motivations behind their involvement in housing decisions, and to provide passive solar manufactured buildings producers with results of these steps as early initial market intelligence. The intent is to identify not only the industries, location of their planned projects, and their likely worker housing needs, but also the individuals involved in making housing-related decisions. The 56 identified projects are located within 18 states and cover 11 types of resources. The report documents individual projects, provides protections of total worker-related housing needs, and presents overviews of resource development company involvement in the new construction market. In addition, the report profiles three organizations that expressed a strong interest in implementing the use of low-cost passive solar manufactured buildings in resource-development-related activities.

Roze-Benson, R V

1980-12-01T23:59:59.000Z

414

Deterministic chaos in passive Q-switching pulsation of a CO/sub 2/ laser with saturable absorber  

SciTech Connect (OSTI)

A single-mode laser with a saturable absorber exhibits spontaneous pulsation in the output (passive Q switching). Period-doubling bifurcation and chaotic passive Q switching which are predicted on the basis of the recently proposed model of the laser system have been observed by use of a CO/sub 2/ laser with a formic acid absorber. This is the first experimental evidence of deterministic chaos in a single-mode laser system with a saturable absorber.

Tachikawa, M.; Hong, F.; Tanii, K.; Shimizu, T.

1988-05-30T23:59:59.000Z

415

Revolution in Detection Affairs  

SciTech Connect (OSTI)

The detection of nuclear or radioactive materials for homeland or national security purposes is inherently difficult. This is one reason detection efforts must be seen as just one part of an overall nuclear defense strategy which includes, inter alia, material security, detection, interdiction, consequence management and recovery. Nevertheless, one could argue that there has been a revolution in detection affairs in the past several decades as the innovative application of new technology has changed the character and conduct of detection operations. This revolution will likely be most effectively reinforced in the coming decades with the networking of detectors and innovative application of anomaly detection algorithms.

Stern W.

2013-11-02T23:59:59.000Z

416

Concept for passive heating at meter/gate stations. Final report, December 1987-August 1990. Technical report  

SciTech Connect (OSTI)

Foster-Miller conducted a program for the Gas Research Institute to develop a passive reheat method of heating natural gas flows following pressure reductions at regulating stations. When natural gas passes through a regulator, its temperature is reduced approximately 7F per 100 psi drop. The concept was developed as an economical alternative to gas-fueled preheaters which are currently used to avoid operational problems associated with reduced distribution gas temperatures after throttling. These problems include equipment freeze-ups, natural gas hydrate formation, and ground frost heave. In the passive reheat system, a heat exchanger is used to transfer heat from the main pipeline flow to the lower pressure distribution flow. The report discusses the technical and economic issues related to the practical application of the passive reheat concept and establishes the feasibility of the concept. Design specifications and site requirements for application of the system are outlined. A detailed design of a passive reheat system developed for an actual site is presented. The advantages of the system are its passive nature and low cost. Since the heat exchanger operates extremely reliably without active control, there is little likelihood of operational failure. A preliminary economic evaluation of the utility site retrofit application indicates that substantial cost savings are possible with the passive reheat system over the lifetime of the system.

Hill, W.S.; Poulin, E.C.

1992-02-01T23:59:59.000Z

417

Annual daylighting performance of a passive optical light shelf in sidelit  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Annual daylighting performance of a passive optical light shelf in sidelit Annual daylighting performance of a passive optical light shelf in sidelit perimeter zones of commercial buildings Title Annual daylighting performance of a passive optical light shelf in sidelit perimeter zones of commercial buildings Publication Type Report Year of Publication 2013 Authors McNeil, Andrew, and Eleanor S. Lee Keywords bidirectional scattering distribution functions, building energy efficiency, daylighting, Radiance simulations Abstract Sunlight redirecting systems have the potential to significantly offset electric lighting energy use in deep perimeter zones of buildings where the windows are subject to high daylight availability. New Radiance modeling tools have recently been developed and validated, enabling accurate and timely simulation analysis of the annual energy and comfort performance of these optically-complex, anisotropic systems. A parametric study was conducted using these tools to evaluate the performance of a commercially-available passive optical light shelf (OLS) in a 17.4 m deep (57 ft), south-facing open plan office zone in three climates. Daylighting efficiency, discomfort glare, and lighting energy savings with continuous dimming and bi-level switching controls were determined at varying depths within the zone. The OLS decreased lighting energy use significantly throughout the depth of the space and achieved these savings with minimal discomfort glare in the area near the window. Annual lighting energy use intensity was reduced to 1.71-1.82 kWh/ft2-yr (22-27%) over the full depth of the perimeter zone across the three climates modeled (Phoenix, Washington DC, and Minneapolis) compared to a non-daylit zone at 2.34 kWh/ft2-yr. There was a greater occurrence of discomfort glare (3-7% during daytime work hours) if the occupant was in a seated view position looking at the window from the back of the room. The system is passive, needing no adjustment during the day and over the seasons and can be used as a retrofit measure in existing buildings. These results are encouraging and demonstrate how the primary daylit sidelit area can be extended well beyond the defined limits provided by the newly adopted ASHRAE 90.1-2010 code (i.e., 1.0 times the head height of the window).

418

Enhancing VHTR passive safety and economy with thermal radiation based direct reactor auxiliary cooling system  

SciTech Connect (OSTI)

One of the most important requirements for Gen. IV Very High Temperature Reactor (VHTR) is passive safety. Currently all the gas cooled version of VHTR designs use Reactor Vessel Auxiliary Cooling System (RVACS) for passive decay heat removal. The RVACS can be characterized as a surface-based decay heat removal system. It is especially suitable for smaller power reactors since small systems have relatively larger surface area to volume ratio. However, RVACS limits the maximum achievable power level for modular VHTRs due to the mismatch between the reactor power (proportional to the core volume) and decay heat removal capability (proportional to the vessel surface area). Besides the safety considerations, VHTRs also need to be economical in order to compete with other reactor concepts and other types of energy sources. The limit of decay heat removal capability set by using RVACS has affected the economy of VHTRs. A potential alternative solution is to use a volume-based passive decay heat removal system, called Direct Reactor Auxiliary Cooling Systems (DRACS), to remove or mitigate the limitation on decay heat removal capability. DRACS composes of natural circulation loops with two sets of heat exchangers, one on the reactor side and another on the environmental side. For the reactor side, cooling pipes will be inserted into holes made in the outer or inner graphite reflector blocks. There will be gaps or annular regions formed between these cooling pipes and their corresponding surrounding graphite surfaces. Graphite has an excellent heat conduction property. By taking advantage of this feature, we can have a volume-based method to remove decay heat. The scalability can be achieved, if needed, by employing more rows of cooling pipes to accommodate higher decay heat rates. Since heat can easily conduct through the graphite regions among the holes made for the cooling pipes, those cooling pipes located further away from the active core region can still be very effective in removing decay heat. By removing the limit on the decay heat removal capability due to the limited available surface area as in a RVACS, the reactor power density and therefore the reactor power can be significantly increased, without losing the passive heat removal feature. This paper introduces the concept of using DRACS to enhance VHTR passive safety and economics. Three design options with different cooling pipe locations are discussed. Analysis results from a lumped volume based model and CFD simulations are presented. (authors)

Zhao, H.; Zhang, H.; Zou, L. [Idaho National Laboratory (United States); Sun, X. [Ohio State Univ. (United States)

2012-07-01T23:59:59.000Z

419

Single-Molecule Detection  

Science Journals Connector (OSTI)

Detection of single molecules represents the ultimate level of sensitivity and ... background, fluorescence is one obvious choice for single-molecule detection (SMD). However, SMD using ... first report on SMD us...

2006-01-01T23:59:59.000Z

420

Aggressively Passive  

E-Print Network [OSTI]

-KT-13-12-48 CATEE 2013: Clean Air Through Energy Efficiency Conference, San Antonio, Texas Dec. 16-18 Option 3 – maximize wall openings + roof openings 3 8fps5.02.03.5 4.5 2.6fps 0 5fps . . 7.5 1.5 7.5 7.57.5 6.3fps 5.2fps 1.5fps ESL-KT-13-12-48 CATEE... 7 8 9 10 13 14 15 16 17 20 21 22 23 24 27 28 29 30 ESL-KT-13-12-48 CATEE 2013: Clean Air Through Energy Efficiency Conference, San Antonio, Texas Dec. 16-18 63% of hours 90°F 50%RH 90% satisfied 93% satisfied - 177 fpm 335 fpm 94°F-30%RH 44% ti...

Upadhyaya, K.

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Nuclear desalination in the Arab world â?? Part II: advanced inherent and passive safe nuclear reactors  

Science Journals Connector (OSTI)

Rapid increases in population levels have led to greater demands for fresh water and electricity in the Arab World. Different types of energies are needed to contribute to bridging the gap between increased demand and production. Increased levels of safeguards in nuclear power plants have became reliable due to their large operational experience, which now exceeds 11,000 years of operation. Thus, the nuclear power industry should be attracting greater attention. World electricity production from nuclear power has risen from 1.7% in 1970 to 17%-20% today. This ratio had increased in June 2002 to reach more than 30%, 33% and 42% in Europe, Japan, and South Korea respectively. In the Arab World, both the public acceptance and economic viability of nuclear power as a major source of energy are greatly dependent on the achievement of a high level of safety and environmental protection. An assessment of the recent generation of advanced reactor safety criteria requirements has been carried out. The promising reactor designs adapted for the Arab world and other similar developing countries are those that profit from the enhanced and passive safety features of the new generation of reactors, with a stronger focus on the effective use of intrinsic characteristics, simplified plant design, and easy construction, operation and maintenance. In addition, selected advanced reactors with a full spectrum from small to large capacities, and from evolutionary to radical types, which have inherent and passive safety features, are discussed. The relevant economic assessment of these reactors adapted for water/electricity cogeneration have been carried out and compared with non-nuclear desalination methods. This assessment indicates that, water/electricity cogeneration by the nuclear method with advanced inherent and passive safe nuclear power plants, is viable and competitive.

Aly Karameldin; Samer S. Mekhemar

2004-01-01T23:59:59.000Z

422

Testing a passive revegetation approach for restoring Coastal Plain depression wetlands  

SciTech Connect (OSTI)

Abstract Restoration of coastal plain depressions, a biologically significant and threatened wetland type of the southeastern United States, has received little systematic research. Within the context of an experimental project designed to evaluate several restoration approaches, we tested whether successful revegetation can be achieved by passive methods (recruitment from seed banks or seed dispersal) that allow for wetland ‘‘self-design’’ in response to hydrologic recovery. For 16 forested depressions that historically had been drained and altered, drainage ditches were plugged to reestablish natural ponding regimes, and the successional forest was harvested to open the sites and promote establishment of emergent wetland vegetation. We sampled seed bank and vegetation composition 1 year before restoration and monitored vegetation response for 3 years after. Following forest removal and ditch plugging, the restored wetlands quickly developed a dense cover of herbaceous plant species, of which roughly half were wetland species. Seed banks were a major source of wetland species for early revegetation. However, hydrologic recovery was slowed by a prolonged drought, which allowed nonwetland plant species to establish from seed banks and dispersal or to regrow after site harvest. Some nonwetland species were later suppressed by ponded conditions in the third year, but resprouting woody plants persisted and could alter the future trajectory of revegetation. Some characteristic wetland species were largely absent in the restored sites, indicating that passive methods may not fully replicate the composition of reference systems. Passive revegetation was partially successful, but regional droughts present inherent challenges to restoring depressional wetlands whose hydrologic regimes are strongly controlled by rainfall variability.

De Steven, Diane; Sharitz, Rebecca R.; Singer, Julian H.; Barton, Christopher D.

2006-09-01T23:59:59.000Z

423

Technical Needs for Prototypic Prognostic Technique Demonstration for Advanced Small Modular Reactor Passive Components  

SciTech Connect (OSTI)

This report identifies a number of requirements for prognostics health management of passive systems in AdvSMRs, documents technical gaps in establishing a prototypical prognostic methodology for this purpose, and describes a preliminary research plan for addressing these technical gaps. AdvSMRs span multiple concepts; therefore a technology- and design-neutral approach is taken, with the focus being on characteristics that are likely to be common to all or several AdvSMR concepts. An evaluation of available literature is used to identify proposed concepts for AdvSMRs along with likely operational characteristics. Available operating experience of advanced reactors is used in identifying passive components that may be subject to degradation, materials likely to be used for these components, and potential modes of degradation of these components. This information helps in assessing measurement needs for PHM systems, as well as defining functional requirements of PHM systems. An assessment of current state-of-the-art approaches to measurements, sensors and instrumentation, diagnostics and prognostics is also documented. This state-of-the-art evaluation, combined with the requirements, may be used to identify technical gaps and research needs in the development, evaluation, and deployment of PHM systems for AdvSMRs. A preliminary research plan to address high-priority research needs for the deployment of PHM systems to AdvSMRs is described, with the objective being the demonstration of prototypic prognostics technology for passive components in AdvSMRs. Greater efficiency in achieving this objective can be gained through judicious selection of materials and degradation modes that are relevant to proposed AdvSMR concepts, and for which significant knowledge already exists. These selections were made based on multiple constraints including the analysis performed in this document, ready access to laboratory-scale facilities for materials testing and measurement, and potential synergies with other national laboratory and university partners.

Meyer, Ryan M.; Coble, Jamie B.; Hirt, Evelyn H.; Ramuhalli, Pradeep; Mitchell, Mark R.; Wootan, David W.; Berglin, Eric J.; Bond, Leonard J.; Henager, Charles H.

2013-05-17T23:59:59.000Z

424

Functionalization/passivation of porous graphitic carbon with di-tert-amylperoxide  

SciTech Connect (OSTI)

Porous graphitic carbon (PGC) particles were functionalized/passivated in situ in packed beds at elevated temperature with neat di-tert-amylperoxide (DTAP) in a column oven. The performance of these particles for high performance liquid chromatography (HPLC) was assayed before and after this chemistry with the following analytes: benzene, toluene, ethyl benzene, n-propyl benzene, n-butyl benzene, p-xylene, phenol, 4-methylphenol, phenetole, 3,5-xylenol, and anisole. After the first functionalization/passivation, the retention factors, k, of these compounds decreased by about 5% and the number of theoretical plates (N) increased by ca. 15%. These values of k then remained roughly constant after a second functionalization/ passivation but a further increase in N was noticed. In addition, after each of the reactions, the peak asymmetries decreased by ca. 15%, for a total of ca. 30%. The columns were then subjected twice to methanol at 100 C for 5 h at 1 mL/min. After these stability tests, the values of k remained roughly constant, the number of plates increased, which is favorable, and the asymmetries rose and then declined, where they remained below the initial values for the unfunctionalized columns. Functionalized and unfunctionalized particles were characterized by scanning electron microscopy and BET measurements, which showed no difference between the functionalized and unfunctionalized materials, and X-ray photoelectron spectroscopy and time-of-flight secondary ion mass spectrometry (ToF-SIMS), where ToF-SIMS suggested some chemical differences between the functionalized and unfunctionalized materials. In particular ToF-SIMS suggested that the expected five-carbon fragments from DTAP exist at higher concentrations on DTAP-functionalized PGC. First principle calculations on model graphitic surfaces suggest that the first addition of a DTAP radical to the surface proceeds in an approximately isothermal or slightly favorable fashion, but that subsequent DTAP additions are then increasingly thermodynamically favorable. Thus, this analysis suggests that the direct functionalization/passivation of PGC with DTAP is plausible. Chemometric analyses of the chromatographic and ToF-SIMS data are also presented.

Jensen, David S.; Gupta, Vipul; Olsen, Rebecca E.; Miller, Alex T.; Davis, Robert C.; Ess, Daniel; Zhu, Zihua; Vail, Michael A.; Dadson, Andrew; Linford, Matthew R.

2011-11-18T23:59:59.000Z

425

Passivating overcoat bilayer for multilayer reflective coatings for extreme ultraviolet lithography  

DOE Patents [OSTI]

A passivating overcoat bilayer is used for multilayer reflective coatings for extreme ultraviolet (EUV) or soft x-ray applications to prevent oxidation and corrosion of the multilayer coating, thereby improving the EUV optical performance. The overcoat bilayer comprises a layer of silicon or beryllium underneath at least one top layer of an elemental or a compound material that resists oxidation and corrosion. Materials for the top layer include carbon, palladium, carbides, borides, nitrides, and oxides. The thicknesses of the two layers that make up the overcoat bilayer are optimized to produce the highest reflectance at the wavelength range of operation. Protective overcoat systems comprising three or more layers are also possible.

Montcalm, Claude (Livermore, CA); Stearns, Daniel G. (Los Altos, CA); Vernon, Stephen P. (Pleasanton, CA)

1999-01-01T23:59:59.000Z

426

Pressure gradient passivation of carbonaceous material normally susceptible to spontaneous combustion  

DOE Patents [OSTI]

This invention is a process for the passivation or deactivation with respect to oxygen of a carbonaceous material by the exposure of the carbonaceous material to an oxygenated gas in which the oxygenated gas pressure is increased from a first pressure to a second pressure and then the pressure is changed to a third pressure. Preferably a cyclic process which comprises exposing the carbonaceous material to the gas at low pressure and increasing the pressure to a second higher pressure and then returning the pressure to a lower pressure is used. The cycle is repeated at least twice wherein the higher pressure may be increased after a selected number of cycles.

Ochs, Thomas L.; Sands, William D.; Schroeder, Karl; Summers, Cathy A.; Utz, Bruce R.

2002-01-29T23:59:59.000Z

427

Passive and Active Fast-Neutron Imaging in Support of Advanced Fuel Cycle Initiative Safeguards Campaign  

SciTech Connect (OSTI)

Results from safeguards-related passive and active coded-aperture fast-neutron imaging measurements of plutonium and highly enriched uranium (HEU) material configurations performed at Idaho National Laboratory s Zero Power Physics Reactor facility are presented. The imaging measurements indicate that it is feasible to use fast neutron imaging in a variety of safeguards-related tasks, such as monitoring storage, evaluating holdup deposits in situ, or identifying individual leached hulls still containing fuel. The present work also presents the first demonstration of imaging of differential die away fast neutrons.

Blackston, Matthew A [ORNL; Hausladen, Paul [ORNL

2010-04-01T23:59:59.000Z

428

Predictive Optimal Control of Active and Passive Building Thermal Storage Inventory  

SciTech Connect (OSTI)

Cooling of commercial buildings contributes significantly to the peak demand placed on an electrical utility grid. Time-of-use electricity rates encourage shifting of electrical loads to off-peak periods at night and weekends. Buildings can respond to these pricing signals by shifting cooling-related thermal loads either by precooling the building's massive structure or the use of active thermal energy storage systems such as ice storage. While these two thermal batteries have been engaged separately in the past, this project investigates the merits of harnessing both storage media concurrently in the context of predictive optimal control. This topical report describes the demonstration of the model-based predictive optimal control for active and passive building thermal storage inventory in a test facility in real-time using time-of-use differentiated electricity prices without demand charges. The laboratory testing findings presented in this topical report cover the second of three project phases. The novel supervisory controller successfully executed a three-step procedure consisting of (1) short-term weather prediction, (2) optimization of control strategy over the next planning horizon using a calibrated building model, and (3) post-processing of the optimal strategy to yield a control command for the current time step that can be executed in the test facility. The primary and secondary building mechanical systems were effectively orchestrated by the model-based predictive optimal controller in real-time while observing comfort and operational constraints. The findings reveal that when the optimal controller is given imperfect weather fore-casts and when the building model used for planning control strategies does not match the actual building perfectly, measured utility costs savings relative to conventional building operation can be substantial. This requires that the facility under control lends itself to passive storage utilization and the building model includes a realistic plant model. The savings associated with passive building thermal storage inventory proved to be small be-cause the test facility is not an ideal candidate for the investigated control technology. Moreover, the facility's central plant revealed the idiosyncratic behavior that the chiller operation in the ice-making mode was more energy efficient than in the chilled-water mode. Field experimentation (Phase III) is now required in a suitable commercial building with sufficient thermal mass, an active TES system, and a climate conducive to passive storage utilization over a longer testing period to support the laboratory findings presented in this topical report.

Gregor P. Henze; Moncef Krarti

2003-12-17T23:59:59.000Z

429

Optimum design for BB84 quantum key distribution in tree-type passive optical networks  

E-Print Network [OSTI]

We show that there is a tradeoff between the useful key distribution bit rate and the total length of deployed fiber in tree-type passive optical networks for BB84 quantum key distribution applications. A two stage splitting architecture where one splitting is carried in the central office and a second in the outside plant and figure of merit to account for the tradeoff are proposed. We find that there is an optimum solution for the splitting ratios of both stages in the case of Photon Number Splitting (PNS) attacks and Decoy State transmission. We then analyze the effects of the different relevant physical parameters of the PON on the optimum solution.

Jose Capmany; Carlos R. Fernandez-Pousa

2011-03-24T23:59:59.000Z

430

Assessment of the Passivation Capabilities of Two Different Covalent Chemical Modifications on GaP(100)  

Science Journals Connector (OSTI)

With respect to toxicity, the UDA-functionalized GaP provided better passivation which was confirmed by less gallium leaching into water and saline solutions. ... Due to its promising characteristics for device fabrication, gallium arsenide (GaAs) has been extensively studied and the formation of self-assembled monolayers has been of interest. ... A general increase in the Ga/P ratio can be seen in the surfaces exposed to solutions compared to the clean surface which is attributed to the greater solubility of the phosphorus oxide (P2O5) compared to the gallium oxide (Ga2O3). ...

David Richards; Dmitry Zemlyanov; Albena Ivanisevic

2010-02-03T23:59:59.000Z

431

Energy conservation and passive-solar retrofit workbook. [Consumer guide to home energy conservation  

SciTech Connect (OSTI)

The slow turnover of housing stock means that passive-solar and conservation equipment must be retrofitted into existing structures. This workbook was written to show homeowners how they can save money and use available technology to make their homes more efficient. Examples are drawn from actual projects in South Dakota homes. The first step is an evaluation of the situation in terms of climate, site, and findings from a home audit. Information on conservation principles, calculations, and construction techniques is followed by a marketing and financial guide. The workbook includes numerous line sketches, checklists, a glossary of conservation terms, and a list of information sources. 5 references, 7 figures, 17 tables. (DCK)

Not Available

1981-01-01T23:59:59.000Z

432

Low resistance barrier layer for isolating, adhering, and passivating copper metal in semiconductor fabrication  

SciTech Connect (OSTI)

Cubic or metastable cubic refractory metal carbides act as barrier layers to isolate, adhere, and passivate copper in semiconductor fabrication. One or more barrier layers of the metal carbide are deposited in conjunction with copper metallizations to form a multilayer characterized by a cubic crystal structure with a strong (100) texture. Suitable barrier layer materials include refractory transition metal carbides such as vanadium carbide (VC), niobium carbide (NbC), tantalum carbide (TaC), chromium carbide (Cr.sub.3 C.sub.2), tungsten carbide (WC), and molybdenum carbide (MoC).

Weihs, Timothy P. (Baltimore, MD); Barbee, Jr., Troy W. (Palto Alto, CA)

2002-01-01T23:59:59.000Z

433

Development of Black Silicon Antireflection Control and Passivation Technology for Commercial Application: Cooperative Research and Development Final Report, CRADA Number CRD-12-475  

SciTech Connect (OSTI)

The work involves the development of a commercial manufacturing process for both multicrystalline and monocrystalline solar cells that combines Natcore's patent pending passivation technology.

Yuan, H. C.

2014-06-01T23:59:59.000Z

434

Dual passivation of GaAs (110) surfaces using O{sub 2}/H{sub 2}O and trimethylaluminum  

SciTech Connect (OSTI)

The nucleation and passivation of oxide deposition was studied on defect-free GaAs (110) surfaces to understand passivation of surfaces containing only III-V heterobonds. The passivation process on GaAs (110) was studied at the atomic level using scanning tunneling microscopy while the electronic structure was determined by scanning tunneling spectroscopy (STS). The bonding of the oxidant and reductant were modeled with density functional theory. To avoid Fermi level pinning during gate oxide atomic layer deposition, a dual passivation procedure was required using both a reductant, trimethylaluminum (TMA), and an oxidant, O{sub 2} or H{sub 2}O. Dosing GaAs (110) with TMA resulted in the formation of an ordered complete monolayer of dimethylaluminum which passivates the group V dangling bonds but also forms metal-metal bonds with conduction band edge states. These edge states were suppressed by dosing the surface with oxidants O{sub 2} or H{sub 2}O which selectively react with group III-aluminum bonds. The presence of an ordered Al monolayer with a high nucleation density was indirectly confirmed by XPS and STS.

Kent, Tyler J.; Edmonds, Mary [Materials Science and Engineering Program, University of California, San Diego, La Jolla, California 92093 (United States)] [Materials Science and Engineering Program, University of California, San Diego, La Jolla, California 92093 (United States); Chagarov, Evgueni [Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093 (United States)] [Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093 (United States); Droopad, Ravi [Department of Physics, Texas State University, San Marcos, Texas 78666 (United States)] [Department of Physics, Texas State University, San Marcos, Texas 78666 (United States); Kummel, Andrew C. [Materials Science and Engineering Program, University of California, San Diego, La Jolla, California 92093 (United States) [Materials Science and Engineering Program, University of California, San Diego, La Jolla, California 92093 (United States); Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093 (United States)

2013-12-28T23:59:59.000Z

435

MIDAS, the Mobile Intrusion Detection and Assessment System  

SciTech Connect (OSTI)

MIDAS is a semiautomated passive detection and assessment security system that can be quickly deployed to provide wide-area coverage for a mobile military asset. Designed to be mounted on top of an unguyed telescoping mast, its specially packaged set of 32 infrared sensors spin 360 degrees every two seconds. The unit produces a low resolution infrared image by sampling each sensor more than 16,000 times in a single 360-degree rotation. Drawing from image processing techniques, MIDAS detects vehicular and pedestrian intruders and produces an alarm when an intrusion is detected. Multiple intruders are tracked. MIDAS automatically directs either an assessment camera or a FLIR to one of the tracks. The alerted operator assesses the intruder and initiates a response. Once the operator assesses an intruder, the system continues to track it without generating new alarms. Because the system will track multiple targets and because the assessment system is a separate pan and tilt unit, the detection and tracking system cannot be blind-sided while the operator is assessing a diversionary intrusion. 4 figs.

Arlowe, H.D.; Coleman, D.E.; Williams, J.D.

1990-01-01T23:59:59.000Z

436

Think Detection. Think Prevention.  

E-Print Network [OSTI]

Think Detection. Think Prevention. Think Activity. Office Ergonomics: #12;The Case of Mr. Z Mr. Z..........................................................................................7 Think Prevention. Ergonomics .............................................................11 What is office ergonomics?................................................................11 Making Your

Calgary, University of

437

EMSL - secondary ion detection  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

secondary-ion-detection en Magnesium behavior and structural defects in Mg+ ion implanted silicon carbide. http:www.emsl.pnl.govemslwebpublicationsmagnesium-behavior-and-struc...

438

Passivation of paramagnetic Si?SiO2 interface states with molecular hydrogen  

Science Journals Connector (OSTI)

Dry thermal oxides were grown on (111) silicon substrates at 850?°C. The P b centers associated with this (111) Si?SiO2 interface were observed with electron paramagnetic resonance to be stable under subsequent annealing in vacuum up to at least 850?°C. The rate of passivation of P b centers with H2 was observed to be proportional to the concentration of H2 in the oxide and the density of P b centers. The forward reaction rate constantk f is temperature dependent and obeys the Arrhenius relationship having an activation energyE f of 1.66±0.06 eV and a pre?exponential factor k 0f of 1.94 (+2./?1.)×10?6 cm3 /s for temperatures at least between 230 and 260?°C. The linear H2 pressure dependence in the rate of passivation and the magnitude of k 0f are reasonably consistent with a model in which the H2 molecule reacts directly with P b centers during its diffusional motion among the interstices of the SiO2 network and the reaction site at P b centers.

K. L. Brower

1988-01-01T23:59:59.000Z

439

Experimental study on the operational and the cooling performance of the APR+ passive auxiliary feedwater system  

SciTech Connect (OSTI)

The passive auxiliary feedwater system (PAFS) is one of the advanced safety features adopted in the APR+ which is intended to completely replace the conventional active auxiliary feedwater system. The PAFS cools down the steam generator secondary side and eventually removes the decay heat from the reactor core by introducing a natural driving force mechanism; i.e., condensing steam in nearly-horizontal U-tubes submerged inside the passive condensation cooling tank (PCCT). With an aim of validating the cooling and operational performance of the PAFS, the separate effect test, PASCAL (PAFS Condensing Heat Removal Assessment Loop), is being performed to experimentally investigate the condensation heat transfer and natural convection phenomena in the PAFS. A single nearly-horizontal U-tube whose dimension is same as the prototypic U-tube of the APR+ PAFS is simulated in the PASCAL test. By performing the PASCAL test, the major thermal-hydraulic parameters such as local/overall heat transfer coefficients, fluid temperature inside the tube, wall temperature of the tube, and pool temperature distribution in the PCCT were produced not only to evaluate the current condensation heat transfer model but also to present database for the safety analysis related with the PAFS. (authors)

Kang, K. H.; Bae, B. U.; Kim, S.; Cho, Y. J.; Park, Y. S.; Kim, B. D. [Korea Atomic Energy Research Inst., 150 Dukjin-dong, Yuseong-gu, Daejeon (Korea, Republic of)

2012-07-01T23:59:59.000Z

440

Worldwide advanced nuclear power reactors with passive and inherent safety: What, why, how, and who  

SciTech Connect (OSTI)

The political controversy over nuclear power, the accidents at Three Mile Island (TMI) and Chernobyl, international competition, concerns about the carbon dioxide greenhouse effect and technical breakthroughs have resulted in a segment of the nuclear industry examining power reactor concepts with PRIME safety characteristics. PRIME is an acronym for Passive safety, Resilience, Inherent safety, Malevolence resistance, and Extended time after initiation of an accident for external help. The basic ideal of PRIME is to develop power reactors in which operator error, internal sabotage, or external assault do not cause a significant release of radioactivity to the environment. Several PRIME reactor concepts are being considered. In each case, an existing, proven power reactor technology is combined with radical innovations in selected plant components and in the safety philosophy. The Process Inherent Ultimate Safety (PIUS) reactor is a modified pressurized-water reactor, the Modular High Temperature Gas-Cooled Reactor (MHTGR) is a modified gas-cooled reactor, and the Advanced CANDU Project is a modified heavy-water reactor. In addition to the reactor concepts, there is parallel work on super containments. The objective is the development of a passive box'' that can contain radioactivity in the event of any type of accident. This report briefly examines: why a segment of the nuclear power community is taking this new direction, how it differs from earlier directions, and what technical options are being considered. A more detailed description of which countries and reactor vendors have undertaken activities follows. 41 refs.

Forsberg, C.W.; Reich, W.J.

1991-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
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441

Back-side hydrogenation technique for defect passivation in silicon solar cells  

DOE Patents [OSTI]

A two-step back-side hydrogenation process includes the steps of first bombarding the back side of the silicon substrate with hydrogen ions with intensities and for a time sufficient to implant enough hydrogen atoms into the silicon substrate to potentially passivate substantially all of the defects and impurities in the silicon substrate, and then illuminating the silicon substrate with electromagnetic radiation to activate the implanted hydrogen, so that it can passivate the defects and impurities in the substrate. The illumination step also annihilates the hydrogen-induced defects. The illumination step is carried out according to a two-stage illumination schedule, the first or low-power stage of which subjects the substrate to electromagnetic radiation that has sufficient intensity to activate the implanted hydrogen, yet not drive the hydrogen from the substrate. The second or high-power illumination stage subjects the substrate to higher intensity electromagnetic radiation, which is sufficient to annihilate the hydrogen-induced defects and sinter/alloy the metal contacts. 3 figures.

Sopori, B.L.

1994-04-19T23:59:59.000Z

442

Thermal analysis and design of a passive reflux condenser for the simplified boiling water reactor  

SciTech Connect (OSTI)

At present, the advanced light water reactors (ALWRS) in the United States are being designed to remove reactor decay heat for a period of 72 h following a postulated loss-of-coolant accident (LOCA). The water in the pools external to the containment is evaporated or boiled off to remove the decay heat. It is presumed that the water in the pools can be replenished within 72 h through operator actions or outside assistance. Some countries in Europe require that the plant be designed to remove the reactor decay heat for a much longer duration than 72 h without external assistance. This paper presents an analysis and design of a passive heat exchanger called a reflux condenser (RC), which was considered for an ALWR-the 600-MW(electric) simplified boiling water reactor. The RC is required to condense the steam formed when the water in the pool in which the passive containment cooling system (PCCS) is immersed boils following a LOCA. The RCs are nuclear non-safety related. This paper presents steady-state performance of an RC at various outdoor air dry-bulb temperatures under still air conditions.

Bijlani, C.; Patti, F. (Burns Roe Inc., Oradell, NJ (United States)); Prasad, V. (SUNY, Stony Brook, NY (United States))

1993-01-01T23:59:59.000Z

443

Impact of passive solar energy utilization on multi-story apartment houses in hot dry climates  

SciTech Connect (OSTI)

Objectives were to study the thermal behavior of a multi-story, prismatic building and to analyze the impact of various building parameters on this behavior. The building used is representative of residential buildings encountered in hot, dry parts of the world and conforms to the design and construction practices that prevail in such areas. A computer simulation model (BLAST) is employed to describe the building's thermal behavior on an hour-by-hour basis. The model is used to assess the impact of various passive building parameters on the temperature of each interior zone. The simulation is divided into three phases. The first entails simulating the housing prototype as it exists. The second is a parametric evaluation of individual building features; it includes studying the contribution of each of the building parameters/strategies under consideration. The third phase of the investigation involves combinations of features instead of individual features for the study of their thermal interaction. Data analysis indicates that natural ventilation and thermal mass are most critical in determining the interior thermal environment of a building in the hot, dry zone. Included in the study is a historical review of passive solar applications in buildings and a thorough discussion of the comfort requirements in hot, dry region. Findings of the study are outlined, and recommendations for future research are presented.

Abdou, O.A.

1987-01-01T23:59:59.000Z

444

A hybrid passive/active system for control of the noise radiated by a small generator  

Science Journals Connector (OSTI)

The aim of this work was the design and implementation of a hybrid passive/active system to control the noise radiated by a small generator. The fundamental frequency of the periodic radiated noise depends on the electrical load plugged into the generator. Passive control is afforded by a rectangular enclosure with dimensions 1000×710×530?mm3. The wall panels of the enclosure (steel 1.5 mm thick) are lined with a 30?mm layer of sound absorbing material. Special attention is paid to technical aspects such as air refreshing and temperature inside the enclosure. The measured insertion loss is higher than 20 dB above 500 Hz. Low?frequency noise escapes the enclosure via intake and exhaust openings. Active control is applied to the exhaust noise. The reference signal is supplied by an accelerometer over the air filter case of the generator. A high?temperature loudspeaker is used as control source. The error signal is picked up by a cheap electric microphone. Since noise along the exhaust is too loud the microphone sensitivity had to be reduced by taping its diaphragm. A commercial system is used to implement active noise control. [Work supported by CICYT Project AMB97?1175?C03?01.

Maria Cuesta; Pedro Cobo

1999-01-01T23:59:59.000Z

445

Energetics of passivity-based running with high-compliance series elastic actuation  

Science Journals Connector (OSTI)

The efficiency of running gaits in nature results in large part from passive elastic oscillations on springy legs. In this paper, this principle is applied to robotic systems by endowing them with high compliance series elastic actuators in which the electric motors are decoupled from the joints by elastic elements. Periodic motor inputs excite the natural dynamic motion of the robot and create a passivity-based running motion. An optimisation algorithm minimised energy expenditure and estimated the necessary initial model states and the coefficients of a parameterised excitation function for the simulations of a two-dimensional hopping monopod and a planar bounding quadruped. Gait synthesis within this framework was analysed with respect to energy consumption, particularly as a function of running speed. Different solution groups were found, each of them corresponding to a characteristically different movement which proved to be most efficient for the corresponding speed range. This shines a different light on the meaning of 'gait' in the context of robotics, and directly contributes to a better understanding of the creation and exploitation of different modes of locomotion in legged robotics.

C. David Remy; Keith Buffinton; Roland Siegwart

2012-01-01T23:59:59.000Z

446

Conceptual design of a passively safe thorium breeder Pebble Bed Reactor  

Science Journals Connector (OSTI)

Abstract More sustainable nuclear power generation might be achieved by combining the passive safety and high temperature applications of the Pebble Bed Reactor (PBR) design with the resource availability and favourable waste characteristics of the thorium fuel cycle. It has already been known that breeding can be achieved with the thorium fuel cycle inside a Pebble Bed Reactor if reprocessing is performed. This is also demonstrated in this work for a cylindrical core with a central driver zone, with 3 g heavy metal pebbles for enhanced fission, surrounded by a breeder zone containing 30 g thorium pebbles, for enhanced conversion. The main question of the present work is whether it is also possible to combine passive safety and breeding, within a practical operating regime, inside a thorium Pebble Bed Reactor. Therefore, the influence of several fuel design, core design and operational parameters upon the conversion ratio and passive safety is evaluated. A Depressurized Loss of Forced Cooling (DLOFC) is considered the worst safety scenario that can occur within a PBR. So, the response to a DLOFC with and without scram is evaluated for several breeder PBR designs using a coupled DALTON/THERMIX code scheme. With scram it is purely a heat transfer problem (THERMIX) demonstrating the decay heat removal capability of the design. In case control rods cannot be inserted, the temperature feedback of the core should also be able to counterbalance the reactivity insertion by the decaying xenon without fuel temperatures exceeding 1600 °C. Results show that high conversion ratios (CR  > 0.96) and passive safety can be combined in a thorium PBR within a practical operating regime, which means a thermal power of 100 MW or higher, 1000 days total residence time of the breeder pebbles and fuel pebble handling times longer than 14.5 s, like in the HTR-PM. With an increased U-233 content of the fresh driver pebbles (18 w%), breeding (CR = 1.0135) can already be achieved for a 220 cm core and 80 cm driver zone radius. While the decay heat removal is sufficient in this design, the temperature feedback of the undermoderated driver pebbles is too weak to compensate the reactivity insertion due to the xenon decay during a DLOFC without scram. With a lower U-233 content per driver pebble (10 w%) it was found possible to combine breeding (CR = 1.0036) and passive safety for a 300 cm core and 100 cm driver zone radius, but this does require more than a doubling of the pebble handling speed and a high reprocessing rate of the fuel pebbles. The maximum fuel temperature during a DLOFC without scram was simulated to be 1481 °C for this design, still quite a bit below the TRISO failure temperature. The maximum reactivity insertion due to an ingress of water vapour is also limited with a value of +1497 pcm.

F.J. Wols; J.L. Kloosterman; D. Lathouwers; T.H.J.J. van der Hagen

2015-01-01T23:59:59.000Z

447

Oxygen demand for the stabilization of the organic fraction of municipal solid waste in passively aerated bioreactors  

SciTech Connect (OSTI)

Highlights: • The use of an passively aerated reactor enables effective stabilization of OFMSW. • Convective air flow does not inhibit the aerobic stabilization of waste. • The use of an passively aerated reactor reduces the heat loss due to convection. • The volume of supplied air exceeds 1.7–2.88 times the microorganisms demand. - Abstract: Conventional aerobic waste treatment technologies require the use of aeration devices that actively transport air through the stabilized waste mass, which greatly increases operating costs. In addition, improperly operated active aeration systems, may have the adverse effect of cooling the stabilized biomass. Because active aeration can be a limiting factor for the stabilization process, passive aeration can be equally effective and less expensive. Unfortunately, there are few reports documenting the use of passive aeration systems in municipal waste stabilization. There have been doubts raised as to whether a passive aeration system provides enough oxygen to the organic matter mineralization processes. In this paper, the effectiveness of aeration during aerobic stabilization of four different organic fractions of municipal waste in a reactor with an integrated passive ventilation system and leachate recirculation was analyzed. For the study, four fractions separated by a rotary screen were chosen. Despite the high temperatures in the reactor, the air flow rate was below 0.016 m{sup 3}/h. Using Darcy’s equation, theoretical values of the air flow rate were estimated, depending on the intensity of microbial metabolism and the amount of oxygen required for the oxidation of organic compounds. Calculations showed that the volume of supplied air exceeded the microorganisms demand for oxidation and endogenous activity by 1.7–2.88-fold.

Kasinski, Slawomir, E-mail: slawomir.kasinski@uwm.edu.pl; Wojnowska-Baryla, Irena

2014-02-15T23:59:59.000Z

448

Planetary Nebulae Detection  

E-Print Network [OSTI]

layers develop deep convective zone, surface expands, mass loss due to stellar wind · Star moves from tip1 Planetary Nebulae · Detection · Distribution in the Galaxy · Central Stars · Evolution · Bipolar to dust) · Difficult to detect in radio (fainter than H II regions) · Projected number based on surveys

Crenshaw, Michael

449

Array for detecting microbes  

DOE Patents [OSTI]

The present embodiments relate to an array system for detecting and identifying biomolecules and organisms. More specifically, the present embodiments relate to an array system comprising a microarray configured to simultaneously detect a plurality of organisms in a sample at a high confidence level.

Andersen, Gary L.; DeSantis, Todd D.

2014-07-08T23:59:59.000Z

450

Circle based community detection  

Science Journals Connector (OSTI)

The connection patterns among individuals or objects in complex (social) networks possess rich information that can be useful for conducting effecient network analysis. In particular we consider the task of community detection in social networks. Nowadays ... Keywords: community detection, social networks

Hemank Lamba; Ramasuri Narayanam

2013-10-01T23:59:59.000Z

451

Passive Q-switching instability and bistability of a N/sub 2/O laser with intracavity saturable absorber  

SciTech Connect (OSTI)

Several types of instabilities in passive Q switching and optical bistability are observed in a number of 10-/mu/m laser lines in a N/sub 2/O laser with intracavity saturable absorbers such as NH/sub 3/, SF/sub 6/, C/sub 2/H/sub 4/, C/sub 2/H/sub 3/Cl, and CCl/sub 2/F/sub 2/. The observed pulse shapes are reproduced well by a calculation based on the recently proposed rate-equation model. Characteristic dependences of passive Q switching and bistability on the laser parameters are explained with a phase diagram derived theoretically.

Hong, F.; Tachikawa, M.; Li, B.; Shimizu, T.

1988-11-01T23:59:59.000Z

452

A Novel Inkjet-Printed Passive Microfluidic RFID-based Sensing Platform Benajmin S. Cook, James R. Cooper, Sangkil Kim, and Manos M. Tentzeris  

E-Print Network [OSTI]

A Novel Inkjet-Printed Passive Microfluidic RFID-based Sensing Platform Benajmin S. Cook, James R platform combining RFID, microfluidics and inkjet printing technology that enables remote fluid analysis. Index Terms-- Inkjet Printing, Microfluidics, RFID, Antennas, Wireless Sensors, Passive Sensors I

Tentzeris, Manos

453

Passive Infusion of Immune Serum into Simian Immunodeficiency Virus-Infected Rhesus Macaques Undergoing a Rapid Disease Course Has Minimal Effect on Plasma Viremia  

E-Print Network [OSTI]

Passive Infusion of Immune Serum into Simian Immunodeficiency Virus-Infected Rhesus Macaques of passively infused antibody on plasma viremia in infected rhesus macaques. The emphasis of the study was to understand the mechanism(s) underlying any observed effects. We infused serum immunoglobulins (SIVIG

Bonhoeffer, Sebastian

454

Semi-passive, Chemical Oxidation Schemes for the Long-term Treatment of Contaminants  

SciTech Connect (OSTI)

This research involves a combined experimental and modeling study that builds on our previous DOE-sponsored work in investigating how KMnO{sub 4} can be better used with in situ remediation of groundwater contaminated by chlorinated ethylenes (e.g., PCE, TCE, DCE). This study aims to provide scientific basis for developing a new long-term, semi-passive ISCO scheme that uses controlled release KMnO{sub 4} as a reactive barrier component. Specific objectives of the study are (1) to construct controlled release KMnO{sub 4} as a new reactive barrier component that could deliver permanganate at a controlled rate over long time periods of years, (2) to quantitatively describe release mechanisms associated with the controlled release KMnO{sub 4}, (3) to demonstrate efficacy of the new remediation scheme using proof-of-concept experiments, and (4) to design advanced forms of controlled release systems through numerical optimization. The new scheme operates in a long-term, semi-passive manner to control spreading of a dissolved contaminant plume with periodic replacement of the controlled release KMnO{sub 4} installed in the subsurface. As a first step in developing this remedial concept, we manufactured various prototype controlled release KMnO{sub 4} forms. Then we demonstrated using column experiments that the controlled release KMnO{sub 4} could deliver small amount of permanganate into flowing water at controlled rates over long time periods of years. An analytical model was also used to estimate the diffusivities and durations of the controlled release KMnO{sub 4}. Finally, proof-of-concept flow-tank experiments were performed to demonstrate the efficacy of the controlled release KMnO{sub 4} scheme in controlling dissolved TCE plume in a long-term, semi-passive manner. Another important thrust of our research effort involved numerical optimization of controlled release systems. This study used a numerical model that is capable of describing release patterns of active agent from controlled release systems of varied forms and applications. We manufactured prototype single- and double-layered matrix-type controlled release systems and tested their release patterns using numerical simulations and column experiments. In a series of simulations, we demonstrated that an encapsulated, dispersed-agent polymeric matrix-type controlled release system could deliver active agent at a predetermined constant rate for long time periods of years and decades. Such long-term, constant release system is useful in the construction of fertilizers, herbicides, or implantable drug delivery devices as well as in subsurface treatment. Construction of more advanced forms of controlled release systems is currently under way.

Frank W. Schwartz

2005-12-13T23:59:59.000Z

455

An XPS study of passive films on stainless steels and a high-grade Ni-base alloy in seawater environments  

SciTech Connect (OSTI)

In the present study an assessment has been made of the air-formed passive film and the passive film existing after a short exposure to a synthetic seawater environment on austenitic (UNS S31603), superaustenitic (UNS S31254 and UNS S32654) and superduplex (UNS S32760) stainless steels and a Ni-based alloy (UNS N06625) using X-Ray Photoelectron Spectroscopy (XPS). Assessment of their corrosion behavior has been made through use of electrochemical accelerated tests supported by post-test microscopy. The passive film on the Ni-base (low Fe) UNS N06625 alloy is remarkably similar to those formed on the high Cr and Mo stainless steels. It has been demonstrated that the Fe/Cr ratio in the passive film is dependent on alloy composition and on the conditions to which the material has been exposed and a general correlation between passive film constitution and corrosion resistance is evident.

Hodgkiess, T. [Univ. of Glasgow (United Kingdom); Neville, A. [Heriot-Watt Univ., Edinburgh (United Kingdom). Dept. of Mechanical and Chemical Engineering

1999-11-01T23:59:59.000Z

456

Multi-axis compliant mechanism-based nanopositioner for multi-mode mechanical testing of carbon nanotubes  

E-Print Network [OSTI]

This thesis documents the design of a multi-axis nanopositioner that addresses a need for carbon nanotube (CNT) instrumentation that is capable of multiple modes of mechanical testing. This nanopositioner is a solution to ...

Lin, Kevin, S.M. Massachusetts Institute of Technology

2006-01-01T23:59:59.000Z

457

Measurement and Characterization of Lean NOx Adsorber Regeneration and Desulfation and Controlling NOx from Multi-mode Lean DI Engines  

Broader source: Energy.gov [DOE]

Presentation from the U.S. DOE Office of Vehicle Technologies "Mega" Merit Review 2008 on February 25, 2008 in Bethesda, Maryland.

458

Measurement and Characterization of Lean NOx Adsorber Regeneration and Desulfation and Controlling NOx from Multi-mode  

Broader source: Energy.gov [DOE]

2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C.

459

Interdependent infrastructures and multi-mode attacks and failures: improving the security of urban water systems and fire response  

E-Print Network [OSTI]

This dissertation examines the interdependence between urban water distribution systems and urban fire response. The focus on interdependent critical infrastructures is driven by concern for security of water systems and the effects on related...

Bristow, Elizabeth Catherine

2009-05-15T23:59:59.000Z

460

A PERSPECTIVE ON THE NUMERICAL AND EXPERIMENTAL CHARACTERISTICS OF MULTI-MODE DRY-FRICTION WHIP AND WHIRL  

E-Print Network [OSTI]

of tapered Timoshenko beam finite elements to form multiple degree of freedom rotor and stator models. These models are reduced by component mode synthesis to discard highfrequency modes while retaining physical coordinates at locations for nonlinear...

Wilkes, Jason C.

2010-01-16T23:59:59.000Z

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Microsoft PowerPoint - Wireless, Passive Ceramic Strain Sensors_An [Compatibility Mode]  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

June 13, 2013 June 13, 2013 Wireless, Passive Ceramic Strain Sensors for Turbine Engine Applications Gang Shao and Linan An Advanced Materials Processing and Analysis Center (AMPAC) Department of Materials Science and Engineering (MSE) University of Central Florida Orlando, FL 32816 2 Outline  Motivation  Strain Sensors - State of the Art  Objectives  Schedule and timelines  Accomplishment  Future Work  Summary 3 Motivation - applications of turbines  Turbine engines - key for energy generation and propulsion 2007 Energy Generation Statistics (DOE) ~50% Major power generation techniques need turbine engines 4 Motivation - need for wireless strain sensors  Many parts in turbine engines subjected to severe strain/stress in extreme environments  Strain sensors

462

Studying Altocumulus with Ice Virga Using Ground-Based Active and Passive Remote Sensors  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Studying Altocumulus with Ice Virga Using Ground-Based Studying Altocumulus with Ice Virga Using Ground-Based Active and Passive Remote Sensors Z. Wang Goddard Earth Science and Technology Center University of Maryland, Baltimore County College Park, Maryland Z. Wang, D. N. Whiteman, and B. B. Demoz Mesoscale Atmospheric Processes Branch National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland K. Sassen Geophysical Institute University of Alaska Fairbanks, Alaska Introduction Clouds not only play crucial roles in regulating the Earth-atmosphere system energy budget, but also the atmospheric hydrological cycle. The impact of a cloud system strongly depends on the cloud microphysical properties and its vertical extent (Stephens et al. 1990). Although clouds can contain only

463

2007 R&D 100 Award: Passive millimeter-wave spectroscopy (PmmWS), Nuclear  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

About the Division > Awards > 2007 R&D About the Division > Awards > 2007 R&D 100 Awards: Passive millimeter-wave spectroscopy (PmmWS) Director's Welcome Organization Achievements Awards Patents Professional Societies Highlights Fact Sheets, Brochures & Other Documents Multimedia Library About Nuclear Energy Nuclear Reactors Designed by Argonne Argonne's Nuclear Science and Technology Legacy Opportunities within NE Division Visit Argonne Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Celebrating the 70th Anniversary of Chicago Pile 1 (CP-1) Argonne OutLoud on Nuclear Energy Argonne Energy Showcase 2012 Awards 2007 R&D 100 awards Bookmark and Share R&D 100 Awards Awardees: Sami Gopalsami, Sasan Bakhtiari, Paul Raptis and Thomas Elmer

464

Crystalline silicon surface passivation with SiON:H films deposited by medium frequency magnetron sputtering  

Science Journals Connector (OSTI)

Hydrogenated silicon oxynitride (SiON:H) could be used as a passivation layer, especially on the back side of the cell. In this work, it were deposited on crystalline silicon substrates by medium frequency magnetron sputtering from Ar+N2 + H2O, Ar + NH3 + H2O, gas mixtures with changed the operation current. The SiON:H layer was characterized by n&k measurements, Fourier Transformed Infrared Spectroscopy (FTIR) to determine film thickness and refractive index, Si-O, Si-H and N-H peak position. Minority carrier lifetimes were measured by the microwave photoconductance decay method (?-PCD) before and after thermal annealing. It has been found that the method was possible to modify the refractive index (from 1.46 to 1.64) and increase the Minority carrier lifetimes after annealing at temperatures of 400°C, but decrease after annealing at temperatures of 600°C.

Yanghuan Lin; Minghua Li; Hui Shen

2011-01-01T23:59:59.000Z

465

Silicon heterojunction solar cell with passivated hole selective MoO{sub x} contact  

SciTech Connect (OSTI)

We explore substoichiometric molybdenum trioxide (MoO{sub x}, x?passivation layer between the oxide and the silicon absorber, we demonstrate a high open-circuit voltage of 711?mV and power conversion efficiency of 18.8%. Due to the wide band gap of MoO{sub x}, we observe a substantial gain in photocurrent of 1.9?mA/cm{sup 2} in the ultraviolet and visible part of the solar spectrum, when compared to a p-type amorphous silicon emitter of a traditional silicon heterojunction cell. Our results emphasize the strong potential for oxides as carrier selective heterojunction partners to inorganic semiconductors.

Battaglia, Corsin; Yin, Xingtian; Zheng, Maxwell; Javey, Ali, E-mail: ajavey@eecs.berkeley.edu [Electrical Engineering and Computer Sciences Department, University of California, Berkeley, California 94720 (United States); Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Martín de Nicolás, Silvia; De Wolf, Stefaan; Ballif, Christophe [Photovoltaics and Thin Film Electronics Laboratory, Ecole Polytechnique Fédérale de Lausanne, 2000 Neuchâtel (Switzerland)

2014-03-17T23:59:59.000Z

466

Mitigation of steam generator tube rupture in a pressurized water reactor with passive safety systems  

DOE Patents [OSTI]

The effects of steam generator tube ruptures in a pressurized water reactor are mitigated by reducing the pressure in the primary loop by diverting reactor coolant through the heat exchanger of a passive heat removal system immersed in the in containment refueling water storage tank in response to a high feed water level in the steam generator. Reactor coolant inventory is maintained by also in response to high steam generator level introducing coolant into the primary loop from core make-up tanks at the pressure in the reactor coolant system pressurizer. The high steam generator level is also used to isolate the start-up feed water system and the chemical and volume control system to prevent flooding into the steam header. 2 figures.

McDermott, D.J.; Schrader, K.J.; Schulz, T.L.

1994-05-03T23:59:59.000Z

467

Mitigation of steam generator tube rupture in a pressurized water reactor with passive safety systems  

DOE Patents [OSTI]

The effects of steam generator tube ruptures in a pressurized water reactor are mitigated by reducing the pressure in the primary loop by diverting reactor coolant through the heat exchanger of a passive heat removal system immersed in the in containment refueling water storage tank in response to a high feed water level in the steam generator. Reactor coolant inventory is maintained by also in response to high steam generator level introducing coolant into the primary loop from core make-up tanks at the pressure in the reactor coolant system pressurizer. The high steam generator level is also used to isolate the start-up feed water system and the chemical and volume control system to prevent flooding into the steam header. 2 figures.

McDermott, Daniel J. (Export, PA); Schrader, Kenneth J. (Penn Hills, PA); Schulz, Terry L. (Murrysville Boro, PA)

1994-01-01T23:59:59.000Z

468

High performance photonic reservoir computer based on a coherently driven passive cavity  

E-Print Network [OSTI]

Reservoir computing is a recent bio-inspired approach for processing time-dependent signals. It has enabled a breakthrough in analog information processing, with several experiments, both electronic and optical, demonstrating state-of-the-art performances for hard tasks such as speech recognition, time series prediction and nonlinear channel equalization. A proof-of-principle experiment using a linear optical circuit on a photonic chip to process digital signals was recently reported. Here we present the first implementation of a photonic reservoir computer based on a coherently driven passive fiber cavity processing analog signals. Our experiment surpasses all previous experiments on a wide variety of tasks, and also has lower power consumption. Furthermore, the analytical model describing our experiment is also of interest, as it arguably constitutes the simplest high performance reservoir computer algorithm introduced so far. The present experiment, given its remarkable performances, low energy consumption...

Vinckier, Quentin; Smerieri, Anteo; Vandoorne, Kristof; Bienstman, Peter; Haelterman, Marc; Massar, Serge

2015-01-01T23:59:59.000Z

469

In-plant experience with passive-active shufflers at Los Alamos  

SciTech Connect (OSTI)

Two Canberra-built passive-active {sup 252}Cf shufflers of Los Alamos hardware and software design have been installed at Los Alamos National Laboratory, one at the Chemistry and Metallurgy Research (CMR) Facility at TA-3 and the other at the Plutonium Facility (PF-4) at TA-55. These instruments fulfill important safeguards and accountability measurement requirements for special nuclear material (SNM) in matrices too dense or otherwise not appropriate for typical gamma-ray or other neutron counting techniques. They support many programmatic requirements including measurements of transuranic (TRU) waste and inventory verification. This paper describes the instrument performance under plant conditions with various background radiations on well-characterized standards to determine long-term stability and establish a calibration. Results are also reported on verification measurements of previously unmeasured inventory items in various matrices and geometric distributions. Preliminary investigative measurements are presented on standards of mixed uranium and plutonium oxide (MOX).

Hurd, J.R.; Hsue, F.; Rinard, P.M.

1995-09-01T23:59:59.000Z

470

Passive air cooling of liquid metal-cooled reactor with double vessel leak accommodation capability  

DOE Patents [OSTI]

A passive and inherent shutdown heat removal method with a backup air flow path which allows decay heat removal following a postulated double vessel leak event in a liquid metal-cooled nuclear reactor. The improved reactor design incorporates the following features: (1) isolation capability of the reactor cavity environment in the event that simultaneous leaks develop in both the reactor and containment vessels; (2) a reactor silo liner tank which insulates the concrete silo from the leaked sodium, thereby preserving the silo's structural integrity; and (3) a second, independent air cooling flow path via tubes submerged in the leaked sodium which will maintain shutdown heat removal after the normal flow path has been isolated.

Hunsbedt, Anstein (Los Gatos, CA); Boardman, Charles E. (Saratoga, CA)

1995-01-01T23:59:59.000Z

471

Design, modeling, and performance of four breadbox passive solar water heaters  

SciTech Connect (OSTI)

As part of the Southwest Border Regional Commission demonstration program on Solar Upgrading of Low-Income Housing, three different types of passive breadbox solar water heaters were designed. Using these designs, a total of six solar water heaters have been installed on public housing units in Las Cruces; these systems act as preheaters to the existing conventional gas-fired water heaters. Under a separate contract from the National Center for Appropriate Technology, four of these installations have been instrumented with two Btu meters each to measure the thermal output of both the solar preheater and conventional backup system. This has enabled measurement of the actual solar fraction of the four instrumented solar systems. The design and construction of the water heaters is described, and the actual performance of the systems is compared with the predicted performance.

Roberts, D. (Energy Management Services, Inc., Santa Fe, NM); Farrer, R.

1981-01-01T23:59:59.000Z

472

Invention disclosure: modular passive solar walls with swivel types of insulation systems  

SciTech Connect (OSTI)

The invention comprises means of controlling the insulation and radiation of passive solar thermal storage columns for heating and cooling of homes and other structures. In one embodiment rotatable insulating panels control the exposure of round thermal storage columns to daytime sunlight and the nighttime sky. In a second embodiment the rotatable insulating panels are positioned in concave depressions formed in vertical thermal storage columns. These columns include individual thermal convection means formed therein and are particularly suited to precast concrete or masonry construction. The initial experimental test results of the first embodiment of the invention have been included in this report, and this invention has been studied as a possible application for the City of Ann Arbor retrofit housing project. The preliminary test results of the prototype have been achieved and reported.

Lee, K.S.

1982-01-01T23:59:59.000Z

473

Mixing properties in the advection of passive tracers via recurrences and extreme value theory  

E-Print Network [OSTI]

In this paper we characterize the mixing properties in the advection of passive tracers by exploiting the extreme value theory for dynamical systems. With respect to classical techniques directly related to the Poincar\\'e recurrences analysis, our method provides reliable estimations of the characteristic mixing times and distinguishes between barriers and unstable fixed points. The method is based on a check of convergence for extreme value laws on finite datasets. We define the mixing times in terms of the shortest time intervals such that extremes converge to the asymptotic (known) parameters of the Generalized Extreme Value distribution. Our technique is suitable for applications in the analysis of other systems where mixing time scales need to be determined and limited datasets are available.

Davide Faranda; Xavier Leoncini; Sandro Vaienti

2014-02-16T23:59:59.000Z

474

Control and generation of localized pulses in passively mode-locked semiconductor lasers  

E-Print Network [OSTI]

We show experimentally and theoretically that localized pulses can be generated from an electrically biased $200\\,\\mu$m multi-transverse mode Vertical-Cavity Surface-Emitting Laser. The device is passively mode-locked using optical feedback from a distant Resonant Saturable Absorber Mirror and it is operated below threshold. We observe multistability between the off solution and a large variety of pulsating solutions with different number and arrangements of pulses per round-trip, thus indicating that the mode-locked pulses are localized, i.e. mutually independent. We show that a modulation of the bias current allows controlling the number of the pulses travelling within the cavity, thus suggesting that our system can be operated as an arbitrary pattern generator of 10 ps pulses and 1 W peak power.

Marconi, M; Camelin, P; Chaparro, D; Balle, S; Giudici, M

2015-01-01T23:59:59.000Z

475

Explosive Detection Program  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

To standardize and accelerate implementation of the Department of Energy (DOE) explosive detection program. DOE N 251.40, dated 5/3/01, extends this directive until 12/31/01.

2000-10-26T23:59:59.000Z

476

Idaho Explosive Detection System  

ScienceCinema (OSTI)

Learn how INL researchers are making the world safer by developing an explosives detection system that can inspect cargo. For more information about INL security research, visit http://www.facebook.com/idahonationallaboratory

Klinger, Jeff

2013-05-28T23:59:59.000Z

477

Idaho Explosive Detection System  

SciTech Connect (OSTI)

Learn how INL researchers are making the world safer by developing an explosives detection system that can inspect cargo. For more information about INL security research, visit http://www.facebook.com/idahonationallaboratory

Klinger, Jeff

2011-01-01T23:59:59.000Z

478

Detection of counterfeit currency  

DOE Patents [OSTI]

A method of detecting counterfeit currency by contacting the currency to be tested with near infrared beams in the spectrum below 1250 namometers, measuring reflectance of the near infrared beams and comparing the reflectance values with those from genuine currency.

Burns, Donald A. (Los Alamos, NM)

1998-01-01T23:59:59.000Z

479

Energy Detectives (3 Activities)  

K-12 Energy Lesson Plans and Activities Web site (EERE)

Students explore the classroom as they look and feel for signs of energy. They record the ways they use energy throughout a typical day in an energy detective journal.

480

Radiation Hardness of Passive Fibre Optic Components for the Future Thermonuclear Fusion Reactor  

E-Print Network [OSTI]

thermon uclearfusion reactor ITER will require remote-hanA#0 equipmen t to monNNfl its operation an to allow hazard-freemand-freexAN durin itsfrequen tmain ten3# periods. Heavy shielded umbilicals will be required tocon5N3 thesen2A5 an the actuators with theirinrx0flNj tation Multiplexin sen#0 signfl3 turn out to beessen tial to ease the umbilicalmancalx5 t. We arecon33NxF0# fibre optic technxfljN , with its in trinfl# wavelenflfl multiplexin (WDM) capabilities, tohanA5 these ITER multiplexin issues. We propose anA anAN2 data lin design for low-banjxF0N sennj an actuators basedon commercialo #-the-shelf (COTS) fiber optic compon5 ts. We relyon passive compon0 ts such as WDM couplersan fibre Bragggratin2 (FBG) to build a radiationfl0#NxnN t an5#j datalin0 WDM couplers remain operationx up to a 13 MGy gamma total dose. Aradiation53AxnA chan#/ drift is observed. The refractive inflNN han3 un33 ion33jj radiation is proposed as the degradation mechan30j FBG filters con tin ue to operate satisfactorily up to a 150 MGy total gamma dosean an505/3 fluen2 of about 10 15nx0 2 . Our resultson these COTS all-fibre passive compon5 ts open perspectives to build a radiation#A2/xn t an/5/ optical data lin compatible with the ITERrequiremen ts.

A. Fernandez Fernandez F. Berghmans; A. Fern; Ez Fern; M. Decréton; P. Mégret; M. Blondel; A. Delchambre; Ez A; F. Berghmans A; B. Brichard; M. Van Uffelen

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "multi-mode passive detection" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

A study of the passive gait of a compass-like biped robot: Symmetry and chaos  

SciTech Connect (OSTI)

The focus of this work is a systematic study of the passive gait of a compass-like planar, biped robot on inclined slopes. The robot is kinematically equivalent to a double pendulum, possessing two kneeless legs with point masses and a third point mass at the hip joint. Three parameters, namely, the ground-slope angle and the normalized mass and length of the robot describe its gait. The authors show that in response to a continuous change in any one of its parameters, the symmetric and steady stable gait of the unpowered robot gradually evolves through a regime of bifurcations characterized by progressively complicated asymmetric gaits, eventually arriving at an apparently chaotic gait where not two steps are identical. The robot can maintain this gait indefinitely. A necessary (but not sufficient) condition for the stability of such gaits is the contraction of the phase-fluid volume. For this frictionless robot, the volume contraction, which the authors compute, is caused by the dissipative effects of the ground-impact model. In the chaotic regime, the fractal dimension of the robot`s strange attractor (2.07) compared to its state-space dimension (4) also reveals strong contraction. The authors present a novel graphical technique based on the first return map that compactly captures the entire evolution of the gait, from symmetry to chaos. Additional passive dissipative elements in the robot joint results in a significant improvement in the stability and the versatility of the gait, and provide a rich repertoire for simple controls laws.

Goswami, A.; Espiau, B. [INRIA Rhone-Alpes, Montbonnot Saint Martin (France); Thuilot, B. [Univ. Blaise Pascal, Aubiere (France)

1998-12-01T23:59:59.000Z

482

Investigation of MEA degradation in a passive direct methanol fuel cell under different modes of operation  

Science Journals Connector (OSTI)

Abstract Direct methanol fuel cell (DMFC) durability tests were conducted in three different operational modes: continuous operation with constant load (LT1), on–off operation with constant load (LT2) and on–off operation with variable load (LT3). Porous carbon nanofiber (CNF) anode layers were employed in three sets of single passive DMFCs; each membrane electrode assembly (MEA) was run continuously in durability testing for 3000 h. The objective of this study is to investigate the degradation mechanisms in an MEA with a porous CNF anode layer under different modes of operation. The polarization curves of single passive \\{DMFCs\\} before and after durability tests were compared. The degradation of DMFC performance under the cyclic LT1 mode was much more severe than that of LT2 and LT3 operation. The loss of maximum power density after degradation tests was 49.5%, 28.4% and 43.7% for LT1, LT2 and LT3, respectively. TEM, SEM and EDS mapping were used to investigate the causes of degradation. The lower power loss for LT2 was mainly attributed to the reversible degradation caused by poor water discharge, which thus reduced the air supply. Catalyst agglomeration was especially observed in LT1 and LT3 and is related to carbon corrosion due to possible fuel starvation. The loss of active catalyst area was a major cause of performance degradation in LT1 and LT3. In addition to this, the dissolution and migration of Ru catalyst from the anode to cathode was identified and correlated with degraded cell performance. In the DMFC, the carbon nanofiber anode catalyst support exhibited higher performance stability with less catalyst agglomeration than the cathode catalyst support, carbon black. This study helps understand and elucidate the failure mechanism of MEAs, which could thus help to increase the lifetime of DMFCs.

A.M. Zainoodin; S.K. Kamarudin; M.S. Masdar; W.R.W. Daud; A.B. Mohamad; J. Sahari

2014-01-01T23:59:59.000Z

483

Silicon nanocrystals as light sources: stable, efficient and fast photoluminescence with suitable passivation  

Science Journals Connector (OSTI)

Silicon optoelectronics is an emerging technological platform, which holds promise for providing better performance, mostly in terms of lower dissipation losses, than the traditional electronics. However, a monolithic integrated light source is still missing since bulk silicon is a very poor light emitter due to its indirect bandgap. The situation dramatically changes when the size of the crystal is reduced down into nanometric dimension (<5 nm), when efficient room-temperature luminescence of these tiny silicon nanocrystals sets in. In this contribution, we present a study of silicon nanocrystals as light sources. We compare the photoluminescence properties of silicon nanocrystals with three different types of surface passivation (hydrogen, silicon oxide and methyl-based capping), which has substantial impact. We show that with sufficiently small sizes and suitable surface passivation, the photoluminescence properties of silicon nanocrystals can reach a level comparable with direct-bandgap semiconductor nanocrystals (radiative lifetime of 10 ns, stable macroscopic quantum yield of 20%). Apart from studying photoluminescence properties on a macroscopic level, we also carried out microscopical room-temperature single-nanocrystal photoluminescence spectroscopy experiments. These spectra revealed the occurrence of a fine structure (peaks 150 meV apart), practically identical with a structure already observed in single-nanocrystal spectra of silicon by other groups and very similar to a structure observed in a fundamentally different type of semiconductor nanocrystals (IIVI material). We propose that all these observations are linked with the same process, most probably the emission of trions in nanocrystals, although further measurements are necessary to support this claim.

Kateř ina Ků sová

2012-01-01T23:59:59.000Z

484

Cost and production analysis for substrates with embedded passives Peter A. Sandborn, Bevin Etienne, Jeffrey W. Herrmann, Mandar M. Chincholkar  

E-Print Network [OSTI]

Cost and production analysis for substrates with embedded passives Peter A. Sandborn, Bevin Etienne? The economic issues that must be considered consist of a combination of manufacturing costs and throughputs, and non-manufacturing life cycle costs. This paper discusses the assessment of manufacturing costs

Herrmann, Jeffrey W.

485

Abstract--Passive robotic devices may exhibit a spatially varying apparent inertia perceptible to a human user. The  

E-Print Network [OSTI]

], as manipulanda for teleoperation [4], and as tools for the exploration of human motion control under motion, and is relevant to many passive mechanisms, including programmable constraint machines or "cobots," which use low-power the apparent inertia and desired inertia are equivalent. The second uses a low-power actuator to control

MacIver, Malcolm A.

486

WISP: A Passively Powered UHF RFID Tag with Sensing and Computation Daniel J. Yeager,1,2  

E-Print Network [OSTI]

includes generating power from environmental sources[3], such as vibration, light, or human motion,[41 WISP: A Passively Powered UHF RFID Tag with Sensing and Computation Daniel J. Yeager,1,2 Alanson that is powered and read by a standards-compliant Ultra-High Frequency (UHF) RFID reader. The notable features

Herr, Hugh

487

Monte Carlo Simulation-based Sensitivity Analysis of the Model of a Thermal-Hydraulic Passive System  

E-Print Network [OSTI]

1 Monte Carlo Simulation-based Sensitivity Analysis of the Model of a Thermal-Hydraulic Passive, and for this reason are expected to improve the safety of nuclear power plants. However, uncertainties are present Engineering and System Safety 107 (2012) 90-106" DOI : 10.1016/j.ress.2011.08.006 #12;2 power plants because

Paris-Sud XI, Université de

488

Corrosion, Passivation, and the Effect of Water Addition on an n-GaAs(100)/Methanol Photoelectrochemical Cell  

E-Print Network [OSTI]

Corrosion, Passivation, and the Effect of Water Addition on an n-GaAs(100)/Methanol of corrosion of the cell on the PL-V profile is examined in detail. It is found that the inclusion of the redox couple gives some protection from corrosion, but the addition of a small amount of water

Richmond, Geraldine L.

489

Wafer Preparation and Iodine-Ethanol-Ethanol Passivation Procedure for Reproducible Minority-Carrier Lifetime Measurement: Preprint  

SciTech Connect (OSTI)

This paper describes reasons that lifetime measurments may be irreproducible using iodine-in-ethanol (I-E) passivation. Possible factors include the strength of the iodine in ethanol solution, wafer cleaning procedures, influence of wafer container during lifetime measurement, and stability of I-E.

Sopori, B.; Rupnowski, P.; Appel, J.; Mehta, V.; Li, C.; Johnston, S.

2008-05-01T23:59:59.000Z

490

Fruit Flies Modulate Passive Wing Pitching to Generate In-Flight Turns Attila J. Bergou,1,* Leif Ristroph,1  

E-Print Network [OSTI]

Fruit Flies Modulate Passive Wing Pitching to Generate In-Flight Turns Attila J. Bergou,1,* Leif of their wing motions. Here, we measure the free-flight kinematics of fruit flies and determine how arise and what control variables govern them remains a challenge. Here, we analyze the torques fruit

Guckenheimer, John

491

An Architecture for Distributed Real-Time Passive Network Measurement Tilman Wolf, Ramaswamy Ramaswamy, Siddhartha Bunga, and Ning Yang  

E-Print Network [OSTI]

An Architecture for Distributed Real-Time Passive Network Measurement Tilman Wolf, Ramaswamy network information be- tween several measurement nodes placed at different loca- tions in the network-processing them on the measurement node itself. Real-time queries are implemented by breaking them down

Shenoy, Prashant

492

PAP: A privacy and authentication protocol for passive RFID tags Alex X. Liu *, LeRoy A. Bailey  

E-Print Network [OSTI]

people about consumer privacy protection and other security loopholes that make RFID tags an easy targetPAP: A privacy and authentication protocol for passive RFID tags Alex X. Liu *, LeRoy A. Bailey 2009 Accepted 20 March 2009 Available online 31 March 2009 Keywords: RFID Privacy Authentication

Liu, Alex X.

493

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL. 52, NO. 2, MARCH 2003 431 Some Attacks Against Vehicles' Passive Entry  

E-Print Network [OSTI]

actions. Some of the remote access functions include vehicle locking, unlocking, remote engine start the authorization code to unlock the vehicle. But there were problems with the system, such as a high cost and low Vehicles' Passive Entry Security Systems and Their Solutions Ansaf Ibrahem Alrabady and Syed Masud Mahmud

Mahmud, Syed Masud

494

Artificial Neural Networks and quadratic Response Surfaces for the functional failure analysis of a thermal-hydraulic passive system  

E-Print Network [OSTI]

] have been widely used in reliability analysis and risk assessment [16]. Recently, advanced samplingArtificial Neural Networks and quadratic Response Surfaces for the functional failure analysis decay heat removal system of a Gas-cooled Fast Reactor (GFR). Keywords: epistemic uncertainties, passive

Paris-Sud XI, Université de

495

Hydrogen passivation of Se and Te in AlSb M. D. McCluskey and E. E. Haller  

E-Print Network [OSTI]

Hydrogen passivation of Se and Te in AlSb M. D. McCluskey and E. E. Haller Lawrence Berkeley observed local vibrational modes LVM's arising from DX-hydrogen complex in AlSb. Hydrogen was diffused into bulk AlSb:Se and AlSb:Te by annealing in sealed quartz ampoules with either hydrogen gas or methanol CH

McCluskey, Matthew

496

High repetition rate passively Q-switched erbium-doped fiber laser incorporating an electro-absorption modulator  

E-Print Network [OSTI]

for the EDF and increase the pump power, the laser system operates at the passively mode-locked laser regime and then the laser system begin to operate in the Q-switched laser regime. Figure 2 shows the output spectrum of the Q-switched fiber ring laser. Figure 3(a) is the typical output pulse train of the laser system

Wai, Ping-kong Alexander

497

Energy shaping of port-Hamiltonian systems by using alternate passive Aneesh Venkatraman and Arjan van der Schaft  

E-Print Network [OSTI]

Energy shaping of port-Hamiltonian systems by using alternate passive outputs Aneesh Venkatraman the energy in a desired manner. I. INTRODUCTION Port-Hamiltonian models [1] encompass a very large class storage elements and are characterized by a set of energy-storing elements, resistive ports and external

Schaft, Arjan van der

498

SILICON SURFACE PASSIVATION BY ULTRATHIN Al2O3 FILMS AND Al2O3/SiNx STACKS  

E-Print Network [OSTI]

, Florian Werner, Dimitri Zielke, and Rolf Brendel Institute for Solar Energy Research Hamelin (ISFH), Am in a conveyor-belt furnace deteriorates the passivation quality, in particular for ultrathin Al2O3 films. For Al capping layer of PECVD-SiNx onto the Al2O3. Application of Al2O3 to the rear of PERC solar cells shows

499

Energy-Saving Landscaping for Your Passive Solar Home Landscaping is often regarded as a finishing touch to enhance  

E-Print Network [OSTI]

Energy-Saving Landscaping for Your Passive Solar Home Landscaping is often regarded as a finishing-facing windows throughout the day, the east and west faces of a house receive little solar benefit. This is due. The east and west sides of the house face long periods of sun at low angles and have the potential

500

Proceedings of the Intern. Conference on Passive and Low Energy Architecture (PLEA), Toulouse (2002) 577 Cost efficiency of ventilation systems  

E-Print Network [OSTI]

Proceedings of the Intern. Conference on Passive and Low Energy Architecture (PLEA), Toulouse (2002 of a corresponding low-energy house have been per- formed for a full heating period. They reproduce measurements from, air quality, control of humidity) [1, 2]. In such houses, the ventilation and infiltration losses

Gieseler, Udo D. J.