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1

RESEARCH IN PARTICLE PHYSICS  

SciTech Connect (OSTI)

This is the final report for the Department of Energy Grant to Principal Investigators in Experimental and Theoretical Particle Physics at Boston University. The research performed was in the Energy Frontier at the LHC, the Intensity Frontier at Super-Kamiokande and T2K, the Cosmic Frontier and detector R&D in dark matter detector development, and in particle theory.

Kearns, Edward [Boston Universiy] [Boston Universiy

2013-07-12T23:59:59.000Z

2

Research in particle theory  

SciTech Connect (OSTI)

In the test particle approximation, the scattering amplitude for two-particle scattering in (2+1)-dimensional Chern-Simons-Witten gravity and supergravity was computed and compared to the corresponding metric solutions. The formalism was then extended to the exact gauge theoretic treatment of the two-particle scattering problem and compared to 't Hooft's results from the metric approach. We have studied dynamical symmetry breaking in 2+1 dimensional field theories. We have analyzed strong Extended Technicolor (ETC) models where the ETC coupling is close to a critical value. There are effective scalar fields in each of the theories. We have worked our how such scalar particles can be produced and how they decay. The {phi}{sup 4} field theory was investigated in the Schrodinger representation. The critical behavior was extracted in an arbitrary number of dimensions in second order of a systematic truncation approximation. The correlation exponent agrees with known values within a few percent.

Mansouri, F.; Suranyi, P; Wijewardhana, L.C.R.

1991-10-01T23:59:59.000Z

3

Air Force Research Laboratory Placement: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson  

E-Print Network [OSTI]

Air Force Research Laboratory Placement: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton OH Discipline(s): Materials science/engineering, chemical. Description: We are looking for a qualified candidate to join our team at the Air Force Research Laboratory

Alpay, S. Pamir

4

Workshop on indoor air quality research needs  

SciTech Connect (OSTI)

Workshop participants report on indoor air quality research needs including the monitoring of indoor air quality, report of the instrumentation subgroup of indoor air quality, health effects, and the report of the control technology session. Risk analysis studies addressing indoor environments were also summarized. (DLS)

Not Available

1980-01-01T23:59:59.000Z

5

Mechanisms and implications of air pollution particle associations with chemokines  

SciTech Connect (OSTI)

Inflammation induced by inhalation of air pollutant particles has been implicated as a mechanism for the adverse health effects associated with exposure to air pollution. The inflammatory response is associated with upregulation of various pro-inflammatory cytokines and chemokines. We have previously shown that diesel exhaust particles (DEP), a significant constituent of air pollution particulate matter in many urban areas, bind and concentrate IL-8, an important human neutrophil-attracting chemokine, and that the chemokine remains biologically active. In this report, we examine possible mechanisms of this association and the effects on clearance of the chemokine. The binding appears to be the result of ionic interactions between negatively charged particles and positively charged chemokine molecules, possibly combined with intercalation into small pores in the particles. The association is not limited to diesel exhaust particles and IL-8: several other particle types also adsorb the chemokine and several other cytokines are adsorbed onto the diesel particles. However, there are wide ranges in the effectiveness of various particle types and various cytokines. Finally, male Fisher 344 rats were intratracheally instilled with chemokine alone or combined with diesel exhaust or silica particles under isofluorane anesthesia. In contrast to silica particles, which do not bind the chemokine, the presence of diesel exhaust particles, which bind the chemokine, prolonged the retention of the chemokine.

Seagrave, JeanClare [Lovelace Respiratory Research Institute, 2425 Ridgecrest Dr. SE, Albuquerque, NM 87108 (United States)], E-mail: jseagrav@LRRI.org

2008-11-01T23:59:59.000Z

6

Sponsored by Air Force Research Laboratory  

E-Print Network [OSTI]

Sponsored by Air Force Research Laboratory Space Vehicles Directorate Directed Energy Directorate PROGRAM Space Scholars and Directed Energy Scholars The Space Vehicles and Directed Energy Directorates Scholars The Phillips Scholars internship offers an edu- cational and fulfilling summer job experience

Piao, Daqing

7

A research Program in Elementary Particle Physics  

SciTech Connect (OSTI)

Work is reported in: Neutrino Physics, Cosmic Rays and Elementary Particles; Particle Physics and Charged Lepton Flavor Violation; Research in Collider Physics; Dark Energy Studies with BOSS and LSST.

Sobel, Henry; Molzon, William; Lankford, Andrew; Taffard, Anyes; Whiteson, Daniel; Kirkby, David

2013-07-25T23:59:59.000Z

8

The role of colloidal particles on the migration of air bubbles in porous media  

E-Print Network [OSTI]

into account the movement of air bubbles and colloidal particle capture on discrete air-water interface. Generally colloidal particles are treated as suspended particles in the water, so the hypothesis is that the rising air bubble can collect the particles...

Han, Ji-seok

2009-05-15T23:59:59.000Z

9

E-Print Network 3.0 - air pollution particle-induced Sample Search...  

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

Search Powered by Explorit Topic List Advanced Search Sample search results for: air pollution particle-induced Page: << < 1 2 3 4 5 > >> 1 Air Pollution Physics and...

10

Generation of concentration density maxima of small dispersive coal dust particles in horizontal iodine air filter at air-dust aerosol blow  

E-Print Network [OSTI]

The spatial distributions of the small dispersive coal dust particles with the nano and micro sizes in the granular filtering medium with the cylindrical coal granules in the absorber in the horizontal iodine air filter during its long term operation at the nuclear power plant are researched. It is shown that the concentration density maxima of the small dispersive coal dust particles appear in the granular filtering medium with the cylindrical coal absorbent granules in the horizontal iodine air filter at an action by the air dust aerosol blow. The comparison of the measured aerodynamic resistances of the horizontal and vertical iodine air filters is conducted. The main conclusion is that the magnitude of the aerodynamic resistance of the horizontal iodine air filters is much smaller in comparison with the magnitude of the aerodynamic resistance of the vertical iodine air filters at the same loads of the air dust aerosol volumes. It is explained that the direction of the air dust aerosol blow and the direction of the gravitation force in the horizontal iodine air filter are orthogonal, hence the effective accumulation of the small dispersive coal dust particles takes place at the bottom of absorber in the horizontal iodine air filter. It is found that the air dust aerosol stream flow in the horizontal iodine air filter is not limited by the appearing structures, made of the precipitated small dispersive coal dust particles, in distinction from the vertical iodine air filter, in the process of long term operation of the iodine air filters at the nuclear power plant.

I. M. Neklyudov; O. P. Ledenyov; L. I. Fedorova; P. Ya. Poltinin

2013-06-11T23:59:59.000Z

11

E-Print Network 3.0 - air pollution particle Sample Search Results  

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

particle Search Powered by Explorit Topic List Advanced Search Sample search results for: air pollution particle Page: << < 1 2 3 4 5 > >> 1 Poster Design & Printing by...

12

Pulsed particle beam vacuum-to-air interface  

DOE Patents [OSTI]

A vacuum-to-air interface is provided for a high-powered, pulsed particle beam accelerator. The interface comprises a pneumatic high speed gate valve, from which extends a vacuum-tight duct, that terminates in an aperture. Means are provided for periodically advancing a foil strip across the aperture at the repetition rate of the particle pulses. A pneumatically operated hollow sealing band urges foil strip, when stationary, against and into the aperture. Gas pressure means periodically lift off and separate foil strip from aperture, so that it may be readily advanced. 5 figs.

Cruz, G.E.; Edwards, W.F.

1987-06-18T23:59:59.000Z

13

Research priorities for mobile air toxics  

SciTech Connect (OSTI)

The Health Effects Institute, a cooperative effort of the auto industry and the EPA, whose mission is to provide health effects information to ensure that motor vehicle emissions do not pose unreasonable risks, recently undertook a project to define priorities for research that would decrease uncertainties in risk assessments for mobile air toxics. At a workshop held in December 1992, scientists from academia, industry, and government worked to identify uncertainties in understanding the potential risk of exposure to mobile air toxics, including methanol, an important potential alternate fuel. Although cancer risk was the primary concern regarding most compounds, there was also much discussion of non-cancer effects of potential importance. Participants discussed research priorities for scientific issues that apply across all compound groups, such as dosimetry, high-to-low dose extrapolation, exposure assessment, and molecular biology approaches.

Not Available

1993-04-22T23:59:59.000Z

14

E-Print Network 3.0 - air transported particles Sample Search...  

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

ElkinsLorelei Elkins Summary: pollution)each year due to fine particle pollution) 12;and Air Pollution linked to...and Air Pollution... Maintenance TiresTires EngineEngine Air...

15

Continuous air monitor for alpha-emitting aerosol particles  

SciTech Connect (OSTI)

A new alpha Continuous Air Monitor (CAM) sampler is being developed for use in detecting the presence of alpha-emitting aerosol particles. The effort involves design, fabrication and evaluation of systems for the collection of aerosol and for the processing of data to speciate and quantify the alpha emitters of interest. At the present time we have a prototype of the aerosol sampling system and we have performed wind tunnel tests to characterize the performance of the device for different particle sizes, wind speeds, flow rates and internal design parameters. The results presented herein deal with the aerosol sampling aspects of the new CAM sampler. Work on the data processing, display and alarm functions is being done in parallel with the particle sampling work and will be reported separately at a later date. 17 refs., 5 figs., 3 tabs.

McFarland, A.R.; Ortiz, C.A. (Texas A and M Univ., College Station, TX (USA). Dept. of Mechanical Engineering); Rodgers, J.C.; Nelson, D.C. (Los Alamos National Lab., NM (USA))

1990-01-01T23:59:59.000Z

16

Research in Theoretical Particle Physics  

SciTech Connect (OSTI)

This document is the final report on activity supported under DOE Grant Number DE-FG02-13ER42024. The report covers the period July 15, 2013 – March 31, 2014. Faculty supported by the grant during the period were Danny Marfatia (1.0 FTE) and Hume Feldman (1% FTE). The grant partly supported University of Hawaii students, David Yaylali and Keita Fukushima, who are supervised by Jason Kumar. Both students are expected to graduate with Ph.D. degrees in 2014. Yaylali will be joining the University of Arizona theory group in Fall 2014 with a 3-year postdoctoral appointment under Keith Dienes. The group’s research covered topics subsumed under the Energy Frontier, the Intensity Frontier, and the Cosmic Frontier. Many theoretical results related to the Standard Model and models of new physics were published during the reporting period. The report contains brief project descriptions in Section 1. Sections 2 and 3 lists published and submitted work, respectively. Sections 4 and 5 summarize group activity including conferences, workshops and professional presentations.

Feldman, Hume A; Marfatia, Danny

2014-09-24T23:59:59.000Z

17

Air Force Announces Funding for Alternative Energy Research & Development  

Broader source: Energy.gov [DOE]

The Air Force Research Laboratory (AFRL) has released a Broad Area Announcement (BAA) for over $25 million for Alternative Energy Research & Development.

18

PARTICLES OF DIFFERENCE Conference on Air Quality II  

E-Print Network [OSTI]

Research by BNL investigators was performed under the auspices of the U.S. Department of Energy under and their possible influences on climate change. The prospect of new regulations on fine particles, PM-2 and by causing clouds to evaporate through absorptive heating of the atmosphere. Extinction of solar radiation

19

Air traffic complexity and the interacting particle system method: An integrated approach for collision risk estimation  

E-Print Network [OSTI]

Air traffic complexity and the interacting particle system method: An integrated approach explore the possibility of using air traffic complexity metrics to accelerate the Interacting Particle to assess the performance and impact of, e.g., possible modifications of the current air traffic management

Del Moral , Pierre

20

Air flow and particle control with different ventilation systems in a classroom  

E-Print Network [OSTI]

Air flow and particle control with different ventilation systems in a classroom Sture Holmberg, Ph. For displacement ventilation systems, designers normally assume that all pollutants follow the buoyant air flow of the ventilation air flow are shown to play an important role in the control of air quality. Computer simulation

Chen, Qingyan "Yan"

Note: This page contains sample records for the topic "air particles research" 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

E-Print Network 3.0 - air pollution particle-exposed Sample Search...  

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

exposed Search Powered by Explorit Topic List Advanced Search Sample search results for: air pollution particle-exposed Page: << < 1 2 3 4 5 > >> 1 Air Pollution Physics and...

22

Generation of concentration density maxima of small dispersive coal dust particles in horizontal iodine air filter at air-dust aerosol blow  

E-Print Network [OSTI]

The spatial distributions of the small dispersive coal dust particles with the nano and micro sizes in the granular filtering medium with the cylindrical coal granules in the absorber in the horizontal iodine air filter during its long term operation at the nuclear power plant are researched. It is shown that the concentration density maxima of the small dispersive coal dust particles appear in the granular filtering medium with the cylindrical coal absorbent granules in the horizontal iodine air filter at an action by the air dust aerosol blow. The comparison of the measured aerodynamic resistances of the horizontal and vertical iodine air filters is conducted. The main conclusion is that the magnitude of the aerodynamic resistance of the horizontal iodine air filters is much smaller in comparison with the magnitude of the aerodynamic resistance of the vertical iodine air filters at the same loads of the air dust aerosol volumes. It is explained that the direction of the air dust aerosol blow and the directi...

Neklyudov, I M; Fedorova, L I; Poltinin, P Ya

2013-01-01T23:59:59.000Z

23

E-Print Network 3.0 - air pollution particles Sample Search Results  

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

Search Powered by Explorit Topic List Advanced Search Sample search results for: air pollution particles Page: << < 1 2 3 4 5 > >> 1 Poster Design & Printing by...

24

E-Print Network 3.0 - ambient air particles Sample Search Results  

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

Conference The University of Sydney, Sydney, Australia Summary: -17 December 2004 Air Entrainment by Free Falling Streams of Particles Zeqin Liu, Paul Cooper and Peter W......

25

Influence by small dispersive coal dust particles of different fractional consistence on characteristics of iodine air filter at nuclear power plant  

E-Print Network [OSTI]

The main purpose of research is to determine the influence by the small dispersive coal dust particles of the different fractional consistence on the technical characteristics of the vertical iodine air filter at nuclear power plant. The research on the transport properties of the small dispersive coal dust particles in the granular filtering medium of absorber in the vertical iodine air filter is completed in the case, when the modeled aerodynamic conditions are similar to the real aerodynamic conditions. It is shown that the appearance of the different fractional consistence of small dispersive coal dust particles with the decreasing dimensions down to the micro and nano sizes at the action of the air dust aerosol stream normally results in a significant change of distribution of the small dispersive coal dust particles masses in the granular filtering medium of an absorber in the vertical iodine air filter, changing the vertical iodine air filter aerodynamic characteristics. The precise characterization of...

Neklyudov, I M; Fedorova, L I; Poltinin, P Ya

2013-01-01T23:59:59.000Z

26

Department of Mechanical Engineering Fall 2009 Air Products-Entrained Particle Flow Test Rig  

E-Print Network [OSTI]

PENNSTATE Department of Mechanical Engineering Fall 2009 Air Products-Entrained Particle Flow Test are causing catalyst plugging. Objectives Air Products requested that a test rig be constructed to entrain the hydrogen reforming facilities and aid Air Products in understanding the plugging problem. Approach

Demirel, Melik C.

27

Respiratory disease and particulate air pollution in Santiago Chile: Contribution of erosion particles from fine sediments  

E-Print Network [OSTI]

August) that make atmospheric conditions highly vulnerable, preventing polluting particles in the airCommentary Respiratory disease and particulate air pollution in Santiago Chile: Contribution pollution Santiago Erosion Sedimentation a b s t r a c t Air pollution in Santiago is a serious problem

28

Ice Nuclei in Marine Air: Biogenic Particles or Dust?  

SciTech Connect (OSTI)

Ice nuclei impact clouds, but their sources and distribution in the atmosphere are still not well known. Particularly little attention has been paid to IN sources in marine environments, although evidence from field studies suggests that IN populations in remote marine regions may be dominated by primary biogenic particles associated with sea spray. In this exploratory model study, we aim to bring attention to this long-neglected topic and identify promising target regions for future field campaigns. We assess the likely global distribution of marine biogenic ice nuclei using a combination of historical observations, satellite data and model output. By comparing simulated marine biogenic immersion IN distributions and dust immersion IN distributions, we predict strong regional differences in the importance of marine biogenic IN relative to dust IN. Our analysis suggests that marine biogenic IN are most likely to play a dominant role in determining IN concentrations in near-surface-air over the Southern Ocean, so future field campaigns aimed at investigating marine biogenic IN should target that region. Climate related changes in the abundance and emission of biogenic marine IN could affect marine cloud properties, thereby introducing previously unconsidered feedbacks that influence the hydrological cycle and the Earth’s energy balance. Furthermore, marine biogenic IN may be an important aspect to consider in proposals for marine cloud brightening by artificial sea spray production.

Burrows, Susannah M.; Hoose, C.; Poschl, U.; Lawrence, M.

2013-01-11T23:59:59.000Z

29

Research Profile Particles are everywhere: from the earth and its mineral min-  

E-Print Network [OSTI]

Research Profile Particles are everywhere: from the earth and its mineral min- ing to the air we aiming for new catalysts, sensors, nanocomposites,fuel cells,batteries,phosphors,CO2 sorbents, dental, orthopedic and even nutritional applications. Competences / Infrastructure Mixed ceramic/metal nanoparticle

Sandoghdar, Vahid

30

Air Traffic Operations | GE Global Research  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUCProductstwrmrAre theAdministratorCFM LEAPAgendaConditioning AirWhy »In the Air

31

uge particle accelerators have been at the vanguard of research in particle  

E-Print Network [OSTI]

under construc- tion at CERN in Geneva,will attempt to find the Higgs boson, a particle associatedH uge particle accelerators have been at the vanguard of research in particle physics for more than half a century; through high-energy collisions of accelera- ted particles, the fundamental building

Valero-Cuevas, Francisco

32

EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH European Laboratory for Particle Physics  

E-Print Network [OSTI]

EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH European Laboratory for Particle Physics Internal Note performance of the counter for the detection of one MIP 3 #12;(Minimum Ionizing Particle). Their hardness

Boyer, Edmond

33

Final Report: Particle Physics Research Program  

SciTech Connect (OSTI)

We describe recent progress in accelerator-based experiments in high-energy particle physics and progress in theoretical investigations in particle physics. We also describe future plans in these areas.

Karchin, Paul E.

2011-09-01T23:59:59.000Z

34

Sandia National Laboratories: Air Force Research Laboratory  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0Energy Advanced Nuclear Energy TheASC ContactAir Force

35

air particle detectors: Topics by E-print Network  

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

way of measuring energetic charged particles involves scintillation detectors. Here. Aerogels are very light, so they can be easily flown on a balloon and offer little scattering...

36

Research Article Dielectrophoretic focusing of particles  

E-Print Network [OSTI]

to DC electric field ratio on particle trajectories and velocity variations through the micro- channel achieved by using hydrodynamic filtration [23, 24], hydro- phoresis [25, 26], DC dielectrophoresis [27 focusing of particles in a micro- channel constriction using DC-biased AC electric fields. We acknowledge

Xuan, Xiangchun "Schwann"

37

uge particle accelerators have been at the vanguard of research in particle  

E-Print Network [OSTI]

H uge particle accelerators have been at the vanguard of research in particle physics for more than to develop new and more compact accelerator technologies. Threereports1­3 inthisissue(frompage535) announce counterparts, positrons, can then `surf' the electric field of a wave's wake. Particles have been accelerated

Geddes, Cameron Guy Robinson

38

Influence by small dispersive coal dust particles of different fractional consistence on characteristics of iodine air filter at nuclear power plant  

E-Print Network [OSTI]

The main purpose of research is to determine the influence by the small dispersive coal dust particles of the different fractional consistence on the technical characteristics of the vertical iodine air filter at nuclear power plant. The research on the transport properties of the small dispersive coal dust particles in the granular filtering medium of absorber in the vertical iodine air filter is completed in the case, when the modeled aerodynamic conditions are similar to the real aerodynamic conditions. It is shown that the appearance of the different fractional consistence of small dispersive coal dust particles with the decreasing dimensions down to the micro and nano sizes at the action of the air dust aerosol stream normally results in a significant change of distribution of the small dispersive coal dust particles masses in the granular filtering medium of an absorber in the vertical iodine air filter, changing the vertical iodine air filter aerodynamic characteristics. The precise characterization of the aerodynamic resistance of a model of the vertical iodine air filter is completed. The comparative analysis of the technical characteristics of the vertical and horizontal iodine air filters is also made.

I. M. Neklyudov; O. P. Ledenyov; L. I. Fedorova; P. Ya. Poltinin

2013-02-18T23:59:59.000Z

39

AIR, CLIMATE, AND ENERGY RESEARCH Background The Clean Air Act has  

E-Print Network [OSTI]

resulted in one of the most effective public health programs in American history by providing the legislation to address air quality in the United States. The legislation has led to millions of lives saved and improved health. Research at the U.S. Environmental Protection Agency has played a significant role in these health achievements. The work by EPA scientists, engineers and partners demonstrated that exposure to air pollution damages our health, causing lung and heart disease, impacts our immune, nervous and reproductive systems, and shortens our lives. Their work has linked air pollution to disease and other health problems, contributed to important risk assessments, provided new technology and scientific tools and offered new solutions to protect and manage air quality. New Challenges Despite this progress, challenges remain and new concerns have emerged. Millions of people still live in counties that do not meet air quality standards for one or more pollutants. Research has uncovered many health threats from air pollution. EPA research continues to address these threats and understand their impact on those living in highly polluted areas, other vulnerable groups and vulnerable ecosystems. Climate change represents a major challenge to the protection of human health and the environment. EPA’s research is focused on understanding the environmental impacts of climate change and how to respond to the changes and impacts with sustainable solutions. Responding to climate change also includes reducing emissions of greenhouse gases. EPA’s research in this area is focused on the environmental impacts–both positive and negative–of possible greenhouse gas reduction approaches. The energy choices we make as a society clearly influence air quality and climate change. But how do we make energy decisions that have the least negative impact and greatest benefit? Research is under way to understand the impacts of air quality as alternative energy sources emerge. The atmosphere itself has become more complex. In the past, research has focused on the health impacts of single pollutants such as ozone or particulate matter. Yet we live in a world of multiple pollutants that interact and even create new chemicals.

unknown authors

40

Improved particle impactor assembly for size selective high volume air sampler  

DOE Patents [OSTI]

Air containing entrained particulate matter is directed through a plurality of parallel, narrow, vertically oriented apertures of an inlet element toward an adjacently located, relatively large, dust impaction surface preferably covered with an adhesive material. The air flow turns over the impaction surface, leaving behind, the relatively larger particles and passes through two elongate apertures defining the outer bounds of the impaction collection surface to pass through divergent passages which slow down and distribute the air flow, with entrained smaller particles, over a fine filter element that separates the fine particles from the air. By appropriate selection of dimensions and the number of inlet apertures air flow through the inlet element is provided a nonuniform velocity distribution with the lower velocities being obtained near the center of the inlet apertures, to separate out particles larger than a certain predetermined size on the impaction collection surface. The impaction collection surface, even in a moderately sized apparatus, is thus relatively large and permits the prolonged sampling of air for periods extending to four weeks. 6 figs.

Langer, G.

1987-03-23T23:59:59.000Z

Note: This page contains sample records for the topic "air particles research" 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

Distribution of small dispersive coal dust particles and absorbed radioactive chemical elements in conditions of forced acoustic resonance in iodine air filter at nuclear power plant  

E-Print Network [OSTI]

The physical features of distribution of the small dispersive coal dust particles and the adsorbed radioactive chemical elements and their isotopes in the absorber with the granular filtering medium with the cylindrical coal granules were researched in the case of the intensive air dust aerosol stream flow through the iodine air filter (IAF). It was shown that, at the certain aerodynamic conditions in the IAF, the generation of the acoustic oscillations is possible. It was found that the acoustic oscillations generation results in an appearance of the standing acoustic waves of the air pressure (density) in the IAF. In the case of the intensive blow of the air dust aerosol, it was demonstrated that the standing acoustic waves have some strong influences on both: 1) the dynamics of small dispersive coal dust particles movement and their accumulation in the IAF; 2) the oversaturation of the cylindrical coal granules by the adsorbed radioactive chemical elements and their isotopes in the regions, where the antin...

Ledenyov, Oleg P

2013-01-01T23:59:59.000Z

42

Fermilab | Science | Particle Physics | Research & Development  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest Region service area. TheEPSCI Home ItDarkDiscoveriesMuons photoResearch

43

E-Print Network 3.0 - air pollution research Sample Search Results  

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

research Search Powered by Explorit Topic List Advanced Search Sample search results for: air pollution research Page: << < 1 2 3 4 5 > >> 1 Poster Design & Printing by...

44

Research program in elementary particle theory, 1980. Progress report  

SciTech Connect (OSTI)

Research is reported for these subject areas: particle physics in relativistic astrophysics and cosmology; phenomenology of weak and electromagnetic interactions; strong interaction physics, QCD, and quark-parton physics; quantum field theory, quantum mechanics and fundamental problems; groups, gauges, and grand unified theories; and supergeometry, superalgebra, and unification. (GHT)

Sudarshan, E. C.G.; Ne'eman, Y.

1980-01-01T23:59:59.000Z

45

EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH European Laboratory for Particle Physics  

E-Print Network [OSTI]

EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH European Laboratory for Particle Physics THERMAL components linking the cold mass to the vacuum vessel such as support posts and an insulation vacuum barrier aluminium thermal shield. The recent commissioning and operation of two SSS prototypes in the LHC Test

Paris-Sud XI, Université de

46

Air-Quality Data from NARSTO (North American Research Strategy for Tropospheric Ozone)  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

NARSTO is a public/private partnership dedicated to improving management of air quality in North America. It was established on February 13, 1995 when representatives of Canada, the United States, and Mexico signed the NARSTO Charter in a ceremony at the White House. The Department of Energy is one of the charter members providing funding. The central programmatic goal of NARSTO is to provide data and information for use in the determination of workable, efficient, and effective strategies for local and regional ozone and fine particle management. Since its founding, NARSTO has completed three major scientific Assessments of critical air quality management issues. NARSTO maintains the Quality Systems Science Center and the NARSTO Data Archive for storing data from NARSTO Affiliated Research Activities and making these data available to the scientific community. NARSTO also facilitates activities, such as the Reactivity Research Working Group, which provide critical reviews of the state of the science in areas of interest to air quality policy makers. In January 1997, the U.S. Department of Energy's Environmental Sciences Division announced their sponsorship of the NARSTO Quality Systems Science Center (QSSC). The QSSC is located at the Oak Ridge National Laboratory within the Carbon Dioxide Information Analysis Center (CDIAC). Quality Assurance and Data Management assistance and guidelines are provided by the QSCC, along with access to data files. The permanent data archive is maintained by the NASA EOSDIS Distributed Active Archive Center at the Langley Research Center. The archived data can be reached by a link from the QSSC.(Specialized Interface) See also the NARSTO web site at http://www.narsto.org/

47

E-Print Network 3.0 - air force research Sample Search Results  

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

to be a likely driving force... ; these forces may also have been contributing to entrainment of fume hood air into the general room exhaust. 12;... --- Research by...

48

Research on Fuzzy Regulation Strategies in the Constant Air Volume Air Conditioning System  

E-Print Network [OSTI]

The energy consumption of the constant air volume (CAV) system largely depends on the regulation strategies. Although some air conditioning systems are equipped with automatic regulation devices, others lack effective regulation strategies. To avoid...

Bai, T.; Zhang, J.; Ning, N.; Tong, K.; Wu, Y.; Wang, H.

2006-01-01T23:59:59.000Z

49

Characterization of aerosol particles from Buenos Aires City and its subway system: PIXE and SEM/EDX  

SciTech Connect (OSTI)

This study analyzes total suspended particle (TSP) samples collected at two sites of Buenos Aires City (34S, 58W). One site (San Martin) placed 17 km from city center, and the other one at an underground subway station (Diagonal Norte) in downtown Buenos Aires. In both cases, gravimetric analysis has been performed, while elemental analysis using PIXE has been only carried out in the first case. To the best our knowledge, this is the first airborne particle measurement perform at a Buenos Aires underground subway station.

Murruni, L. G.; Debray, M. E.; Minsky, D. [Unidad de Actividad Fisica, CNEA, 1650 Buenos Aires (Argentina); Escuela de Ciencia y Tecnologia, UNSAM, 1650 Buenos Aires (Argentina); Kreiner, A. J. [Escuela de Ciencia y Tecnologia, UNSAM, 1650 Buenos Aires (Argentina); Unidad de Actividad Fisica, CNEA, 1650 Buenos Aires (Argentina); CONICET, (Argentina); Burlon, A. [Escue la de Ciencia y Tecnologia, UNSAM, 1650 Buenos Aires (Argentina); Davidson, M.; Davidson, J. [CONICET (Argentina); Ozafran, M.; Vazquez, M. E. [Unidad de Actividad Fisica, CNEA, 1650 Buenos Aires (Argentina); Rosenbusch, M. [Unidad de Actividad Quimica, CNEA, 1650 Buenos Aires (Argentina); Ulke, A. G. [Depto. de Ciencias de la Atmosfera y los Oceanos, UBA, (1428) (Argentina); Solanes, V. [Escuela de Ciencia y Tecnologia, UNSAM, 1650 Buenos Aires (Argentina)

2007-02-12T23:59:59.000Z

50

Electromechanical coupling in free-standing AlGaNGaN planar structures Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force  

E-Print Network [OSTI]

Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433 and Semiconductor Research Center, Wright State University, Dayton, Ohio 45435 J. D. Albrecht Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 E. Pan Department of Civil Engineering

Pan, Ernie

51

Edinburgh Research Explorer Global association of air pollution and heart failure  

E-Print Network [OSTI]

Edinburgh Research Explorer Global association of air pollution and heart failure Citation & Mills, NL 2013, 'Global association of air pollution and heart failure: a systematic review and meta-6736(13)60898-3 1 Global association of air pollution and heart failure: a systematic review and meta-analysis Anoop

Edinburgh, University of

52

Unmanned air vehicle (UAV) ultra-persitence research  

SciTech Connect (OSTI)

Sandia National Laboratories and Northrop Grumman Corporation Integrated Systems, Unmanned Systems (NGIS UMS) collaborated to further ultra-persistence technologies for unmanned air vehicles (UAVs). The greatest shortfalls in UAV capabilities have been repeatedly identified as (1) insufficient flight persistence or 'hang time,' (2) marginal electrical power for running higher power avionics and payload systems, and (3) inadequate communications bandwidth and reach. NGIS UMS requested support from Sandia to develop an ultra-persistent propulsion and power system (UP3S) for potential incorporation into next generation UAV systems. The team members tried to determine which energy storage and power generation concepts could most effectively push UAV propulsion and electrical power capabilities to increase UAV sortie duration from days to months while increasing available electrical power at least two-fold. Primary research and development areas that were pursued included these goals: perform general system engineering and integration analyses; develop initial thermal and electrical power estimates; provide mass, volume, dimensional, and balance estimates; conduct preliminary safety assessments; assess logistics support requirements; perform, preliminary assessments of any security and safeguards; evaluate options for removal, replacement, and disposition of materials; generally advance the potential of the UP3S concept. The effort contrasted and compared eight heat sources technologies, three power conversion, two dual cycle propulsion system configurations, and a single electrical power generation scheme. Overall performance, specific power parameters, technical complexities, security, safety, and other operational features were successfully investigated. Large and medium sized UAV systems were envisioned and operational flight profiles were developed for each concept. Heat source creation and support challenges for domestic and expeditionary operations were considered. Fundamental cost driver analysis was also performed. System development plans were drafted in order to determine where the technological and programmatic critical paths lay. As a result of this effort, UAVs were to be able to provide far more surveillance time and intelligence information per mission while reducing the high cost of support activities. This technology was intended to create unmatched global capabilities to observe and preempt terrorist and weapon of mass destruction (WMD) activities. Various DOE laboratory and contractor personnel and facilities could have been used to perform detailed engineering, fabrication, assembly and test operations including follow-on operational support. Unfortunately, none of the results will be used in the near-term or mid-term future. NGIS UMS and SNL felt that the technical goals for the project were accomplished. NGIS UMS was quite pleased with the results of analysis and design although it was disappointing to all that the political realities would not allow use of the results. Technology and system designs evaluated under this CRADA had previously never been applied to unmanned air vehicles (UAVs). Based upon logistic support cost predictions, because the UAVs would not have had to refuel as often, forward basing support costs could have been reduced due to a decrease in the number and extent of support systems and personnel being required to operate UAVs in remote areas. Basic application of the advanced propulsion and power approach is well understood and industry now understands the technical, safety, and political issues surrounding implementation of these strategies. However, the overall economic impact was not investigated. The results will not be applied/implemented. No near-term benefit to industry or the taxpayer will be encountered as a result of these studies.

Dron, S. B.

2012-03-01T23:59:59.000Z

53

2012-13 Princeton Global Scholar Dr. Tong Zhu is a world leading researcher on the impact of air pollution  

E-Print Network [OSTI]

of air pollution on public health, the mechanisms of atmospheric chemistry. His research spans the study research projects, he has led large international projects related to air pollution science, health impacts. Zhu led a team that formulated air pollution measures to improve air quality for the 2008 Beijing

54

Performance evaluation of PM?? and high-volume air samplers using a Coulter Counter Particle Size Analyzer  

E-Print Network [OSTI]

by the HiVol/Coulter process. The HiVol/Coulter process includes the determination of the percent of particles less than 10 um (AED) on a total suspended particulate matter filter. Representative particle size distributions were obtained for cotton dust... with an aerodynamic equivalent diameter (AED) larger than 10 micrometers (um) were seldom found in the air spaces of the lungs, Particles larger than 10 um (AED) do not pass the filtering mechanisms of the respiratory tract and are of less concern (AMA, 1963...

Herber, Douglas John

2012-06-07T23:59:59.000Z

55

NREL research determines optimal HVAC system design for proper air mixing and thermal comfort in homes.  

E-Print Network [OSTI]

NREL research determines optimal HVAC system design for proper air mixing and thermal comfort in homes. As U.S. homes become more energy efficient, heating, ventilation, and cooling (HVAC) systems

56

Performance of Supply Airflow Entrainment for Particles in an Underfloor Air Distribution System  

E-Print Network [OSTI]

air measurement campaign in Helsinki, Finland 1999?the effect of outdoor air pollution on indoor air. Atmospheric Environment [J].2001;35: 1465?77. [6] C.Y.H. Chao, M.P. Wan. Airflow and air temperature distribution in the occupied region...

Li, C.; Li, N.

2006-01-01T23:59:59.000Z

57

air research sst: Topics by E-print Network  

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

data (one ship using bucket, one ERI 2 Improved Validation of Satellite SST for Climate Research Environmental Sciences and Ecology Websites Summary: , and resolution)...

58

Sandia National Laboratories: Air Force Research Laboratory Testing  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0Energy Advanced Nuclear Energy TheASC ContactAir

59

Visual Steering and Verification of Mass Spectrometry Data Factorization in Air Quality Research  

E-Print Network [OSTI]

quality research involves the analysis of high-dimensional single particle mass spectrometry data. We data at significantly increased speed and a higher degree of ease. Index Terms--Dimension reduction of numerical error metrics, multi-dimensional data visualization. 1 INTRODUCTION Atmospheric particles increase

Hamann, Bernd

60

Distribution of small dispersive coal dust particles and absorbed radioactive chemical elements in conditions of forced acoustic resonance in iodine air filter at nuclear power plant  

E-Print Network [OSTI]

The physical features of distribution of the small dispersive coal dust particles and the adsorbed radioactive chemical elements and their isotopes in the absorber with the granular filtering medium with the cylindrical coal granules were researched in the case of the intensive air dust aerosol stream flow through the iodine air filter (IAF). It was shown that, at the certain aerodynamic conditions in the IAF, the generation of the acoustic oscillations is possible. It was found that the acoustic oscillations generation results in an appearance of the standing acoustic waves of the air pressure (density) in the IAF. In the case of the intensive blow of the air dust aerosol, it was demonstrated that the standing acoustic waves have some strong influences on both: 1) the dynamics of small dispersive coal dust particles movement and their accumulation in the IAF; 2) the oversaturation of the cylindrical coal granules by the adsorbed radioactive chemical elements and their isotopes in the regions, where the antinodes of the acoustic waves are positioned. Finally, we completed the comparative analysis of the theoretical calculations with the experimental results, obtained for the cases of: 1) the experimental aerodynamic modeling of physical processes of the absorbed radioactive chemical elements and their isotopes distribution in the IAF; and 2) the gamma-activation spectroscopy analysis of the absorbed radioactive chemical elements and their isotopes distribution in the IAF. We made the innovative propositions on the necessary technical modifications with the purpose to improve the IAF technical characteristics and increase its operational time at the nuclear power plant (NPP), going from the completed precise characterization of the IAF parameters at the long term operation.

Oleg P. Ledenyov; Ivan M. Neklyudov

2013-06-14T23:59:59.000Z

Note: This page contains sample records for the topic "air particles research" 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

Air pollutant interactions with vegetation: research needs in data acquisition and interpretation  

SciTech Connect (OSTI)

The objective of this discussion is to consider problems involved in the acquisition, interpretation, and application of data collected in studies of air pollutant interactions with the terrestrial environment. Emphasis will be placed on a critical evaluation of current deficiencies and future research needs by addressing the following questions: (1) which pollutants are either sufficiently toxic, pervasive, or persistent to warrant the expense of monitoring and effects research; (2) what are the interactions of multiple pollutants during deposition and how do these influence toxicity; (3) how de we collect, report, and interpret deposition and air quality data to ensure its maximum utility in assessment of potential regional environmental effects; (4) what processes do we study, and how are they measured to most efficiently describe the relationship between air quality dose and ultimate impacts on terrestrial ecosystems; and (5) how do we integrate site-specific studies into regional estimates of present and potential environmental degradation (or benefit).

Lindberg, S.E.; McLauglin, S.B.

1980-01-01T23:59:59.000Z

62

RADIATIOh RESEARCH 142,61-69 (1995) The Biological Effectiveness of Radon-ProgenyAlpha Particles.  

E-Print Network [OSTI]

RADIATIOh RESEARCH 142,61-69 (1995) The Biological Effectiveness of Radon-ProgenyAlpha Particles., Huang, Y. and Hall, E. J. The Biological Effectiveness of Radon-Progeny Alpha Particles. 111. Quality estimates of values appropriate for the quality factor for radon progeny are significantly lower than those

Brenner, David Jonathan

63

CENTER FOR AIR TRANSPORTATION SYSTEMS RESEARCHCENTER FOR AIR TRANSPORTATION SYSTEMS RESEARCH Education, Analysis and Research for the Next FrontierEducation, Analysis and Research for the Next Frontier  

E-Print Network [OSTI]

Education, Analysis and Research for the Next FrontierEducation, Analysis and Research for the Next Frontier and Research for the Next FrontierEducation, Analysis and Research for the Next Frontier Chapter 4 Review 0 100, Analysis and Research for the Next FrontierEducation, Analysis and Research for the Next Frontier Airline

64

ZINC/AIR BATTERY R & D RESEARCH AND DEVELOPMENT OF BIFUNCTIONAL OXYGEN ELECTRODE TASKS I AND II  

E-Print Network [OSTI]

ED SCI ENCE DIVISION ZINC/AIR BATTERY R&D C-.J(~ur.1":! rfSAC03-76SF00098 LBL-22661 ZINC/AIR BATTERY R&D RESEARCH ANDanalysis of the zinc-air battery system at one of the

Klein, M.

2009-01-01T23:59:59.000Z

65

Development, characterization, and application of a charged particle microbeam for radiobiological research  

E-Print Network [OSTI]

The goal of this work is to develop a charged-particle microbeam for use in radiobiological research at the MIT Laboratory for Accelerator Beam Applications (LABA). The purpose of this device is to precisely explore the ...

Folkert, Michael R. (Michael Ryan), 1975-

2005-01-01T23:59:59.000Z

66

FIELD EXPERIMENTATION OF COTS-BASED UAV NETWORKING Air Force Research Laboratory  

E-Print Network [OSTI]

1 of 7 FIELD EXPERIMENTATION OF COTS-BASED UAV NETWORKING Dan Hague Air Force Research Laboratory Vehicles (UAVs). This new capability has inspired many novel application ideas in UAV networking. We argue that field experimentation of UAV networking is essential in collecting link meas- urement data, developing

Kung, H. T.

67

E-Print Network 3.0 - air shower particles Sample Search Results  

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

Physics 7 30TH INTERNATIONAL COSMIC RAY CONFERENCE A Fast and Accurate Monte Carlo EAS Simulation Scheme in the GZK Energy Re- Summary: , air shower fluctua- tion is very large;...

68

Research on fundamental aspects of inorganic vapor and particle deposition in coal-fired systems  

SciTech Connect (OSTI)

Parallel research studies are underway on the following interrelated and fundamental subjects; Geometrical Approach to Determining the Sticking Probability of Particles Impacting on Convex Solid Surfaces; Correlations for High Schmidt Number Particle Deposition From Dilute Flowing Rational Engineering Suspensions; Average Capture Probability of Arriving Particles Which Are Distributed With ResPect to ImPact VelocitY and Incidence Angle (Relative to Deposit Substrate); Experimental and Theoretical Studies of Vapor Infiltration of Non-isothermal Granular Deposits; Effective Area/Volume of Populations of 'MicroPorous' Aerosol Particles (Compact and 'Fractal' Quasispherical Aggregates); Effects of Radiative Heat Transfer on the Coagulation Rates of Combustion-Generated Particles; Structure-Sensitivity of Total Mass Deposition Rates from Combustion Product Streams containing Coagulation-Aged Populations of Aggregated Primary Particles; and Na[sub 2]SO[sub 4] Chemical Vapor Deposition From Chlorine-containing Coal-Derived Gases.

Rosner, D.E.

1992-06-01T23:59:59.000Z

69

Air Resources Laboratory The Air Resources Laboratory (ARL) is a research laboratory within the National Oceanic and Atmospheric Administration  

E-Print Network [OSTI]

and the atmospheric transport, transformation and fate of air pollutants. To support air quality decision makers, ARL the interaction of air pollutants in the atmosphere and between the atmosphere and the underlying land and water the National Oceanic and Atmospheric Administration (NOAA). ARL is headquartered at the NOAA Center for Weather

70

. Liquid or solid particles suspended in the air . Some occur naturally, originating from  

E-Print Network [OSTI]

, absorption by particles and surrounding atmosphere causes net warming. . magnitude of cooling depends on size cooling may partially offset global warming due to CO2, etc. #12;. Alter warm, ice and mixed-phase cloud) . Aerosols produce more vivid sunsets . We are not sure whether aerosols are overall warming or cooling

McCready, Mark J.

71

Assessing Children's Exposure to Ultrafine Particles and Other Air Pollutants in School Buses and at Schools  

E-Print Network [OSTI]

was supported by the Health Effects Institute’s Walter A.study. Research report (Health Effects Institute)(139):5-71.

Zhang, Qunfang

2012-01-01T23:59:59.000Z

72

UCLA Intermediate Energy Nuclear and Particle Physics Research: Final Report  

SciTech Connect (OSTI)

This project covers the following research: (a) Investigations into the structure of the proton and neutron. This is done by investigating the different resonance states of nucleons with beams of tagged, polarized photons, linearly as well as circularly, incident on polarized hydrogen/deuterium targets and measuring the production of {pi}{sup #25;0}, 2{pi}{sup #25;}0, 3{pi}{sup #25;0}, {eta}#17;, {eta}', {omega}, etc. The principal detector is the Crystal Ball multiphoton spectrometer which has an acceptance of nearly 4#25;. It has been moved to the MAMI accelerator facility of the University of Mainz, Germany. We investigate the conversion of electromagnetic energy into mesonic matter and conversely. (b) We investigate the consequences of applying the "standard" symmetries of isospin, G�parity, charge conjugation, C, P, T, and chirality using rare and forbidden decays of light mesons such as the {eta}#17;,{eta}' and {omega}. We also investigate the consequences of these symmetries being slightly broken symmetries. We do this by studying selected meson decays using the Crystal Ball detector. (c) We determine the mass, or more precisely the mass difference of the three light quarks (which are inputs to Quantum Chromodynamics) by measuring the decay rate of specially selected {eta}#17; and {eta}' decay modes, again we use the Crystal Ball. (d)We have started a new program to search for the 33 missing cascade baryons using the CLAS detector at the Thomas Jefferson Laboratory. Cascade resonances are very special: they have double strangeness and are quite narrow. This implies that they can be discovered by the missing mass technique in photoproduction reactions such as in {gamma}p{yields}{Xi}{sup #4;�}K{sup +}K{sup +}. The cascade program is of particular importance for the upgrade to 12 GeV of the CLAS detector and for design of the Hall D at JLab. (e) Finally, we are getting more involved in a new program to measure the hadronic matter form factor of complex nuclei, in particular the "neutron skin" of {sup 208}Pb, which is of great interest to astroparticle physics for determining the properties of neutron stars. Processes of study are coherent and non�coherent #25;0 photoproduction. The Crystal Ball is uniquely suited for these studies because of the large acceptance, good direction and energy resolution and it is an inclusive detector for the #25;{pi}{sup 0} final state and exclusive for background such as 2#25;{pi}{sup 0}.

B.M.K. Nefkens (Principal Investigator, ed.); J. Goetz; A. Lapik; M. Korolija; S. Prakhov; A. Starostin (ed.)

2011-05-18T23:59:59.000Z

73

Forest models: their development and potential applications for air pollution effects research  

SciTech Connect (OSTI)

As research tools for evaluating the effects of chronic air pollution stress, forest simulation models offer one means of integrating forest growth and development data with generalized indices of pollution stress. This approach permits consideration of both the competitive interactions of trees in the forest stand and the influences of the stage of stand development on sensitivity of component species. A review of forest growth models, including tree, stand, and gap models, is provided as a means of evaluating relative strengths, weaknesses, and limits of applicability of representative examples of each type. Data from recent simulations with a gap model of eastern deciduous forest responses to air pollution stress are presented to emphasize the potential importance of competition in modifying individual species' responses in a forest stand. Recent developments in dendroecology are discussed as a potential mechanism for model validation and extended application.

Shugart, H.H.; McLaughlin, S.B.; West, D.C.

1980-01-01T23:59:59.000Z

74

Research Article Effects of Alpine hydropower dams on particle transport and  

E-Print Network [OSTI]

Research Article Effects of Alpine hydropower dams on particle transport and lacustrine December 2006 Abstract. The effects of high-alpine hydropower damming on lacustrine sedimentation impact, such as by hydropower dam construction that form artifi- cial sediment sinks acting as manmade

Gilli, Adrian

75

Airborne wear particles railway research group FEM Simulation of train disc brake behavior  

E-Print Network [OSTI]

1 Airborne wear particles railway research group FEM Simulation of train disc brake behavior a modern train disc brake with brake caliper and high speed pads. During braking, a considerable amount. A model of train brake caliper Aim The overall aim of the MSc degree project is to develop a thermoelastic

Haviland, David

76

Research in theoretical elementary particle physics at the University of Florida: Task A. Annual progress report  

SciTech Connect (OSTI)

This is the Annual Progress Report of the theoretical particle theory group at the University of Florida under DOE Grant DE-FG05-86ER40272. At present our group consists of four Full Professors (Field, Ramond, Thorn, Sikivie), one Associate Professor (Woodard), and two Assistant Professors (Qiu, Kennedy). In addition, we have four postdoctoral research associates and seven graduate students. The research of our group covers a broad range of topics in theoretical high energy physics including both theory and phenomenology. Included in this report is a summary of the last several years, an outline of our current research program.

Field, R.D.; Ramond, P.M.; Sikivie, P.; Thorn, C.B.

1994-12-01T23:59:59.000Z

77

A New Method to Reconstruct the Energy and Determine the Composition of Cosmic Rays from the Measurement of Cherenkov Light and Particle Densities in Extensive Air Showers  

E-Print Network [OSTI]

A Monte-Carlo study to reconstruct energy and mass of cosmic rays with energies above 300 TeV using ground based measurements of the electromagnetic part of showers initiated in the atmosphere is presented. The shower properties determined with two detector arrays measuring the air Cherenkov light and the particle densities as realized at the HEGRA experiment are processed to determine the energy of the primary particle without the need of any hypothesis concerning its mass. The mass of the primary particle is reconstructed coarsely from the same observables in parallel to the energy determination.

A. Lindner

1998-01-15T23:59:59.000Z

78

Research on thermophoretic and inertial aspects of ash particle deposition on heat exchanger surfaces in coal-fired equipment  

SciTech Connect (OSTI)

During this third quarter of Grant DE-FG22-86 PC 90756, we have obtained preliminary experimental results on the deposition behavior of submicron and supermicron solid particles (MgO, Al[sub 2]O[sub 3]) on a two-dimensional surface exposed to a high temperature/velocity particle laden'' atmospheric pressure jet. The uniform velocity ( plug flow'') jet, with temperatures up to about 1520 K, derives from a pressurized gaseous fuel microcombustion chamber (110 cc) equipped with a platinum guiding (exit) channel. Particles were generated by several methods (Berglund-Liu type aerosol generator, ultrasonic nebulizer, or syringe feeder with aerodynamic particle off-take) and were introduced into the combustion chamber with a carrier stream of nitrogen or air. Laser light scattering and reflectivity techniques were used for the study of particle deposition, supplemented by post-mortem microscopy on the exposed surface. We observed a linear deposition rate of submicron particles due to the thermophoretic mechanism (until the first layer was developed) under both high and low velocity conditions. On the contrary, supermicron particle deposits reach a steady-state, evidently due to a dynamic equilibrium between particle deposition and dislodging caused by the impacting particles. At several temperatures particle-free subsonic gas jets (up to 120 m/sec) were unable to remove the submicron particle layer.

Rosner, D.E.

1987-06-01T23:59:59.000Z

79

Free Air CO2 Enrichment (FACE) Research Data from the Nevada Desert FACE Facility (NDFF)  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

DOE has conducted trace gas enrichment experiments since the mid 1990s. The FACE Data Management System is a central repository and archive for Free-Air Carbon Dioxide Enrichment (FACE) data, as well as for the related open-top chamber (OTC) experiments. FACE Data Management System is located at the Carbon Dioxide Information Analysis Center (CDIAC). While the data from the various FACE sites, each one a unique user facility, are centralized at CDIAC, each of the FACE sites presents its own view of its activities and information. For that reason, DOE Data Explorer users are advised to see both the central repository at http://public.ornl.gov/face/index.shtml and the individual home pages of each site. NDFF whole-ecosystem manipulation is a flagship experiment of the Terrestrial Carbon Process (TCP) research program of the US Dept. of Energy. It is also a core project of the International Geosphere-Biosphere Program (IGBP) and a contribution to the US Global Change Research Program. The NDFF was developed in conjunction with the National Science Foundation (NSF) and DOE-EPSCoR programs. FACE (Free-Air-Carbon dioxide-Enrichment) technology allows researchers to elevate the carbon dioxide level in large study plots while minimizing ecosystem disturbance. At the NDFF the concentration of CO2 was elevated by 50 percent above the present atmospheric levels in three plots in the Mojave Desert ecosystem, while six other plots remained at the current level. This experimental design provided a large area in which integrated teams of scientists could describe and quantify processes regulating carbon, nutrient, and water balances in desert ecosystems.

80

Energetic Particle Physics In Fusion Research In Preparation For Burning Plasma Experiments  

SciTech Connect (OSTI)

The area of energetic particle (EP) physics of fusion research has been actively and extensively researched in recent decades. The progress achieved in advancing and understanding EP physics has been substantial since the last comprehensive review on this topic by W.W. Heidbrink and G.J. Sadler [1]. That review coincided with the start of deuterium-tritium (DT) experiments on Tokamak Fusion Test reactor (TFTR) and full scale fusion alphas physics studies. Fusion research in recent years has been influenced by EP physics in many ways including the limitations imposed by the "sea" of Alfven eigenmodes (AE) in particular by the toroidicityinduced AEs (TAE) modes and reversed shear Alfven (RSAE). In present paper we attempt a broad review of EP physics progress in tokamaks and spherical tori since the first DT experiments on TFTR and JET (Joint European Torus) including helical/stellarator devices. Introductory discussions on basic ingredients of EP physics, i.e. particle orbits in STs, fundamental diagnostic techniques of EPs and instabilities, wave particle resonances and others are given to help understanding the advanced topics of EP physics. At the end we cover important and interesting physics issues toward the burning plasma experiments such as ITER (International Thermonuclear Experimental Reactor).

Gorelenkov, Nikolai N [PPPL

2013-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "air particles research" 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

Research on fundamental aspects of inorganic vapor and particle deposition in coal-fired systems  

SciTech Connect (OSTI)

In September 1990 DOE-PETC initiated at the Yale HTCRE Laboratory a systematic three-year research program directed toward providing engineers with the fundamentally-based design/optimization 'tools' for economically predicting the dynamics of net deposit growth*, and thermophysical properties of the resulting microparticulate deposits in coal-fired systems. In light of the theoretical 'program' based on the notion of self-regulation'' set forth in Rosner and Nagarajan (1987), this Task includes investigation of the effects of particle material properties and possible liquid phases on the capture properties of particulate deposits. For this purpose we exploit dynamical 'many-body' computer simulation techniques. This approach will provide the required parametric dependencies (on such quantities as incident kinetic energy and angle, mechanical and thermophysical properties of the particles,[hor ellipsis]) of a dimensionless ensemble-averaged particle capture fraction, relegating the role of direct laboratory experiment to verifying (or rejecting) some crucial features/consequences of the simulation route followed. Our ultimate goal is recommend 'sticking' and 'erosion' laws of mechanistic origin. The availability of such laws could dramatically increase the reliability of predicted deposition rates of inertially delivered particles, in the simultaneous presence of a condensed liquid phase within the growing particulate, deposit. Equally important, one could also rationally select conditions to avoid. troublesome deposition subject to other operational requirements.

Rosner, D.E.

1992-09-01T23:59:59.000Z

82

Epidemiologic evidence for asthma and exposure to air toxics: linkages between occupational, indoor, and community air pollution research.  

E-Print Network [OSTI]

709 (1999). 47. Health Effects Institute. Executive Summary:Cambridge, MA:Health Effects Institute, 48. Wade JF III,asthmatic subjects. Health Effects Institute Research Report

Delfino, Ralph J

2002-01-01T23:59:59.000Z

83

A study of fractionating inlet systems for the dichotomous air sampler  

E-Print Network [OSTI]

of Aerosols in Ambient Air", Swedish Water and Air Pollu- tion Research Labs. , S-402 24, Gothenburg, Sweden, (1975). (8) Steen, B. , "The Influence of Different Parameters on the Sampling Efficiency of Some Commonly Used Devices for Measuring Particle... Concentrations in Ambient Air", Ph. D. Thesis, Chalmers Institute of Technology, Gothenburg, Sweden, (1975). (9) Steen, B. , and Andreasson, K. , "Comparative Measure- ments of Particle Concentrations in Ambient Air Made at a Background Station...

Ripps, Gerald Joseph

1979-01-01T23:59:59.000Z

84

RESEARCH ARTICLE Statistics of the surface temperature field of an air/water interface  

E-Print Network [OSTI]

is the coefficient of thermal expansion, m is the kinematic viscosity, a is the thermal diffusivity, DTRESEARCH ARTICLE Statistics of the surface temperature field of an air/water interface under air

Saylor, John R.

85

Particle deposition from turbulent flow: Review of published research and its applicability to ventilation ducts in commercial buildings  

SciTech Connect (OSTI)

This report reviews published experimental and theoretical investigations of particle deposition from turbulent flows and considers the applicability of this body of work to the specific case of particle deposition from flows in the ducts of heating, ventilating and air conditioning (HVAC) systems. Particle deposition can detrimentally affect the performance of HVAC systems and it influences the exposure of building occupants to a variety of air pollutants. The first section of this report describes the types of HVAC systems under consideration and discusses the components, materials and operating parameters commonly found in these systems. The second section reviews published experimental investigations of particle deposition rates from turbulent flows and considers the ramifications of the experimental evidence with respect to HVAC ducts. The third section considers the structure of turbulent airflows in ventilation ducts with a particular emphasis on turbulence investigations that have been used as a basis for particle deposition models. The final section reviews published literature on predicting particle deposition rates from turbulent flows.

Sippola, Mark R.; Nazaroff, William W.

2002-06-01T23:59:59.000Z

86

Submitted 2/08 International Conference on Research in Air Transportation (ICRAT 2008) www.icrat.org Copyright Center for Air Transportation Systems Research (CATSR)/GMU 02/08  

E-Print Network [OSTI]

Submitted 2/08 International Conference on Research in Air Transportation (ICRAT 2008) www for future investment decisions and better tools to manage the system. The passenger flow simulation model protected by anti-trust collusion concerns and civil liberty privacy restrictions. Wang et al developed

87

Research Statement of Hamsa Balakrishnan The air transportation system is a complex, global system that transports over 2.1 billion  

E-Print Network [OSTI]

is important because of the high costs of delays and pollution today, as well as the projected doubling in airResearch Statement of Hamsa Balakrishnan The air transportation system is a complex, global system that transports over 2.1 billion passengers each year. Air traffic delays have become a huge problem

Gummadi, Ramakrishna

88

Research Statement of Hamsa Balakrishnan The air transportation system is a large, complex, global system that transports over 2.1 billion  

E-Print Network [OSTI]

Research Statement of Hamsa Balakrishnan The air transportation system is a large, complex, global system that transports over 2.1 billion passengers each year. Air traffic delays have become a huge to the Joint Economic Committee of the US Senate, domestic air traffic delays in 2007 cost airlines over $19

89

Estimating Air Chemical Emissions from Research Activities Using Stack Measurement Data  

SciTech Connect (OSTI)

Current methods of estimating air emissions from research and development (R&D) activities use a wide range of release fractions or emission factors with bases ranging from empirical to semi-empirical. Although considered conservative, the uncertainties and confidence levels of the existing methods have not been reported. Chemical emissions were estimated from sampling data taken from four research facilities over ten years. The approach was to use a Monte Carlo technique to create distributions of annual emission estimates for target compounds detected in source test samples. Distributions were created for each year and building sampled for compounds with sufficient detection frequency to qualify for the analysis. The results using the Monte Carlo technique without applying a filter to remove negative emission values showed almost all distributions spanning zero, and forty percent of the distributions having a negative mean. This indicates that emissions are so low as to be indistinguishable from building background. Application of a filter to allow only positive values in the distribution provided a more realistic value for emissions and increased the distribution mean by an average of sixteen percent. Release fractions were calculated by dividing the emission estimates by a building chemical inventory quantity. Two variations were used for this quantity: chemical usage, and chemical usage plus one-half standing inventory. Filters were applied so that only release fraction values from zero to one were included in the resulting distributions. Release fractions had a wide range among chemicals and among data sets for different buildings and/or years for a given chemical. Regressions of release fractions to molecular weight and vapor pressure showed weak correlations. Similarly, regressions of mean emissions to chemical usage, chemical inventory, molecular weight and vapor pressure also gave weak correlations. These results highlight the difficulties in estimating emissions from R&D facilities using chemical inventory data.

Ballinger, Marcel Y.; Duchsherer, Cheryl J.; Woodruff, Rodger K.; Larson, Timothy V.

2013-02-15T23:59:59.000Z

90

E-Print Network 3.0 - air quality research Sample Search Results  

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

Commission on Environmental Quality, Saffett Tanrikulu Bay Area Air Quality Control District, Jon Pleim- EPA... for SIPs ... Source: Jacob, Daniel J. - School of...

91

Cooperative Research and Development Agreement between the California Air Resources Board and Lockheed Martin Idaho Technologies Company. Final report  

SciTech Connect (OSTI)

This report summarizes the activities under a Cooperative Research and Development Agreement (CRADA) between Lockheed-Martin Idaho Technologies Company (LMITCO) and the California Air Resources Board (CARB). The activities were performed at the Idaho National Engineering and Environmental Laboratory (INEEL) between June 1995 and December 1997. Work under this agreement was concentrated in two task areas as defined in the California Air Resources Board`s contract number 94-908 having an approval date of June 9, 1995: Task 1--EV and HEV Vehicle Testing and Assessment and Task 4--Advanced Battery Testing.

Cole, G.H.

1998-04-01T23:59:59.000Z

92

Air pollution control technology for municipal solid waste-to-energy conversion facilities: capabilities and research needs  

SciTech Connect (OSTI)

Three major categories of waste-to-energy conversion processes in full-scale operation or advanced demonstration stages in the US are co-combustion, mass incineration, and pyrolysis. These methods are described and some information on US conversion facilities is tabulated. Conclusions and recommendations dealing with the operation, performance, and research needs for these facilities are given. Section II identifies research needs concerning air pollution aspects of the waste-to-energy processes and reviews significant operating and research findings for the co-combustion, mass incinceration, and pyrolysis waste-to-energy systems.

Lynch, J F; Young, J C

1980-09-01T23:59:59.000Z

93

Integrated Technology Air Cleaners (ITAC): Design and Evaluation  

E-Print Network [OSTI]

of particle air filtration technologies." Indoor Air 12(4):2011a). New air cleaning technologies for reduced commercialnumber 2 Integrated technology air cleaner High efficiency

Fisk, William J.

2014-01-01T23:59:59.000Z

94

Research on fundamental aspects of inorganic vapor and particle deposition in coal-fired systems  

SciTech Connect (OSTI)

In September 1990 DOE-PETC initiated at the Yale HTCRE Laboratory a systematic three-year research program directed toward providing engineers with the fundamentally-based design/optimization tools'' foreconomically predicting the dynamics of net deposit growth, and thermophysical properties of the resulting microparticulate deposits in coal-fired systems. The goal of our research in the area of mineral mattertransport is to advance the capability of making reliable engineering predictions of the dynamics of net deposit growth for surfaces exposed to the particle-laden products of coal combustion. To accomplish thisfor a wide variety of combustor types, coal types, and operating conditions, this capability must be based on a quantitative understanding of each of the important mechanisms of mineral matter transport, as well as the nature of the interactions between these substances and the prevailing fireside'' surface of deposits. This level of understanding and predictive capability could be translated into very significant cost reductions for coal-fired equipment design, development and operation. It is also expected that this research activity will not only directly benefit the ash deposition R D community -- but also generically closely related technologies of importance to DOE (e.g. hot-gas clean-up, particulate solids handling,...).

Rosner, D.E.

1992-03-01T23:59:59.000Z

95

Exposure information in environmental health research: Current opportunities and future directions for particulate matter, ozone, and toxic air pollutants  

SciTech Connect (OSTI)

Understanding and quantifying outdoor and indoor sources of human exposure are essential but often not adequately addressed in health-effects studies for air pollution. Air pollution epidemiology, risk assessment, health tracking and accountability assessments are examples of health-effects studies that require but often lack adequate exposure information. Recent advances in exposure modeling along with better information on time-activity and exposure factors data provide us with unique opportunities to improve the assignment of exposures for both future and ongoing studies linking air pollution to health impacts. In September 2006, scientists from the US Environmental Protection Agency (EPA) and the Centers for Disease Control and Prevention (CDC) along with scientists from the academic community and state health departments convened a symposium on air pollution exposure and health in order to identify, evaluate, and improve current approaches for linking air pollution exposures to disease. This manuscript presents the key issues, challenges and recommendations identified by the exposure working group, who used cases studies of particulate matter, ozone, and toxic air pollutant exposure to evaluate health-effects for air pollution. One of the over-arching lessons of this workshop is that obtaining better exposure information for these different health-effects studies requires both goal-setting for what is needed and mapping out the transition pathway from current capabilities to meeting these goals. Meeting our long-term goals requires definition of incremental steps that provide useful information for the interim and move us toward our long-term goals. Another over-arching theme among the three different pollutants and the different health study approaches is the need for integration among alternate exposure assessment approaches. For example, different groups may advocate exposure indicators, biomonitoring, mapping methods (GIS), modeling, environmental media monitoring, and/or personal exposure modeling. However, emerging research reveals that the greatest progress comes from integration among two or more of these efforts.

McKone, Thomas E.; Ryan, P. Barry; Ozkaynak, Haluk

2007-02-01T23:59:59.000Z

96

Research on thermophoretic and inertial aspects of ash particle deposition on heat exchanger surfaces in coal-fired equipment  

SciTech Connect (OSTI)

A real-time laser light-reflectivity technique is being used to study simultaneous thermophoretic and inertial influences on the deposition behavior of MgO particles produced via ultrasonic nebulization (submicrometer range). The deposition surface (a concave platinum ribbon) is exposed to a high velocity/temperature jet of alkali sulfate-free combustion products exiting from a seeded (C3[sub 3]H[sub 8]/air) microcombustor (110 cm[sup 3]). The reflectivity data were calibrated against deposition rates obtained from SEM pictures of the target, and were normalized with the nominal particle feed rate, in order to obtain the mass transfer Stanton number, St[sub m], trends depicted in Figure 1. For the submicron (ca. 0.7[mu]m) particles inertial effects appear to set in at Stokes (Stk) numbers of O(10[sup [minus]2]) (an order of magnitude lower than the ones needed for pure'' inertial impaction), affecting significantly the dominant thermophoretic deposition mechanism. A first order (in Stk) theoretical analysis of the problem in which particle inertia is treated as equivalent to pressure diffusion,'' cannot explain the observed dependence of the deposition rate on Stk. We are presently formulating a Lagrangian approach, valid for all values of Stk, in order to interpret these data. In addition, a Single Particle Counter (SPC) and Transit Time Velocimeter (TTV), are being developed, to allow more precise measurements of particle feed rates and velocities.

Rosner, D.E.

1988-12-01T23:59:59.000Z

97

A laboratory for instruction and research in air conditioning and refrigeration  

E-Print Network [OSTI]

complicated due to the combination of many simple units into elaborate assemblies. The functional relation- ship of condmnsers, compressors, cooling towersp evaporators, air distri- bution systems~ controls, snd other parts of an installation are often...

Hall, Ray Allison

1950-01-01T23:59:59.000Z

98

Exposure information in environmental health research: Current opportunities and future directions for particulate matter, ozone, and toxic air pollutants  

E-Print Network [OSTI]

urban analysis of air pollution health effects, remainsderived from community air pollution health studies. Recentused to link them, in air pollution health studies including

McKone, Thomas E.

2008-01-01T23:59:59.000Z

99

E-Print Network 3.0 - air transportation research Sample Search...  

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

Center for Transportation Analysis Research... A team of researchers toured ports and land transport ... Source: Oak Ridge National Laboratory, Center for...

100

E-Print Network 3.0 - air transport research Sample Search Results  

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

Center for Transportation Analysis Research... A team of researchers toured ports and land transport ... Source: Oak Ridge National Laboratory, Center for...

Note: This page contains sample records for the topic "air particles research" 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

Particle Image Velocimetery (PIV) Diagnostics for Wind Energy and Energy Security Research  

SciTech Connect (OSTI)

Particle Image Velocimetery (PIV) is a laser based technique that involves correlation analysis of tracer particle images to estimate the velocity field in a fluid. High resolution velocity measurement capability and non-intrusive nature of PIV make it desirable for understanding complex fluid flow phenomena occurring in various scenarios. This presentation briefly describes the development of novel PIV diagnostics that forward Wind Energy research and advance scaling models to solve expensive maintenance issues of the Strategic Petroleum Reserves (SPR). Two new diagnostic implementations of Particle Image Velocimetry (PIV) are being developed at Los Alamos National Laboratory (LANL) to facilitate understanding of wind turbine aerodynamics in unprecedented detail. It has been demonstrated that a Large-Field PIV (LF-PIV) diagnostic capable of measuring large scale flow fields of up to 4.3m x 2.8m per camera has been developed. This diagnostic, which represents a significant leap in the field of view of existing centimeter scale PIV systems, allows the measurement of velocity fields at multiple points with high accuracy for large scale flows, such as, flows around wind turbines. Further, to characterize the near blade boundary layer of wind turbines a rotating PIV system (R-PIV) is also under development at LANL (patent application in progress). Design considerations and results of bench top tests that confirm the reliability of PIV measurements obtained using the above diagnostics will be presented in this talk. PIV along with conductivity and temperature probe data has been useful to develop models that simulate the evolution of the layered structure of crude oil stored in the subterranean caverns of the Strategic Petroleum Reserves (SPR). Understanding the evolution of stratified layers of crude oil that are subjected to geothermal forcing is crucial in improving the efficiency of maintenance procedures carried out for the SPR and hence ensure Energy Security of the nation. Through analytical and experimental analysis it has been found that the dynamics of crude oil mixing are significantly affected by the presence of heating sidewalls of the storage caverns. Scaling laws that have been advanced for evolution of mixed layers for stratified fluid layers stored in slender containers will also be described in this presentation.

Pol, Suhas Uddhav [Los Alamos National Laboratory

2012-06-04T23:59:59.000Z

102

AIR SHIPMENT OF SPENT NUCLEAR FUEL FROM THE BUDAPEST RESEARCH REACTOR  

SciTech Connect (OSTI)

The shipment of spent nuclear fuel is usually done by a combination of rail, road or sea, as the high activity of the SNF needs heavy shielding. Air shipment has advantages, e.g. it is much faster than any other shipment and therefore minimizes the transit time as well as attention of the public. Up to now only very few and very special SNF shipments were done by air, as the available container (TUK6) had a very limited capacity. Recently Sosny developed a Type C overpack, the TUK-145/C, compliant with IAEA Standard TS-R-1 for the VPVR/M type Skoda container. The TUK-145/C was first used in Vietnam in July 2013 for a single cask. In October and November 2013 a total of six casks were successfully shipped from Hungary in three air shipments using the TUK-145/C. The present paper describes the details of these shipments and formulates the lessons learned.

Dewes, J.

2014-02-24T23:59:59.000Z

103

PhD scholarship on "Particle transport and clustering in stratified turbulent flows" funded by the Research  

E-Print Network [OSTI]

production in thermal power plants. Additionally, there will also be a coupling between this work, and the phenomenon of turbulent thermal diffusion (TTD). The research work will focus both on computer simulations (Direct Numerical Simulations) and on modelling of the particle-embedded fluid-solid interfaces

Brandenburg, Axel

104

Air pollution and daily mortality in the Coachella Valley, California: A study of PM10 dominated by coarse particles  

SciTech Connect (OSTI)

Many epidemiological studies provide evidence of an association between airborne particles, measured as PM10 (particulate matter less than 10{micro}m in diameter), and daily morbidity and mortality. Most of these studies have been conducted in urban areas where PM10 consists primarily of fine particles (<2.5 {micro}m in diameter). Few studies have investigated impacts associated with coarse mode particles (>2.5 {micro}m in diameter). The authors investigated associations between PM10 and daily mortality in the Coachella Valley, a desert resort and retirement area east of Los Angeles, where coarse particles of geologic origin typically comprise approximately 50--60% of PM10 and can exceed 90% during wind events. Their analysis utilized daily data on mortality from 1989 through 1992 as well as several pollutant and meteorological variables, including PM10, nitrates, sulfates, ozone, nitrogen dioxide, carbon monoxide, temperature, and relative humidity. Outcome variables included several measures of daily mortality, including all-cause, cardiovascular and respiratory mortality, and counts of deaths for those above age 50. Multivariate Poisson regression models were used to explain these health endpoints, controlling for temperature, humidity, day of the week, season, and time, using locally weighted smoothing techniques. The analysis indicated statistically significant associations between PM10 and each measure of mortality.

Ostro, B.D.; Hurley, S.; Lipsett, M.J.

1999-10-01T23:59:59.000Z

105

ENVIRONMENTAL RESEARCH 37, 364-372 (1985) Mineral Particles, Mineral Fibers, and Lung Cancer'  

E-Print Network [OSTI]

an association between lung cancer rates and concentrations of particulate air pollutants (Doll, 1978; Hitosugi, 1968; Vena, 1982), and it has been suggested that air pollution is the factor responsible exposure, and in a series of 14 control men matched for age, smoking history. and general occupational

Ahmad, Sajjad

106

96 ASHRAE Transactions: Research Current duct design methods for variable air volume  

E-Print Network [OSTI]

.Hourlyairflowrequirements, part-load fan characteristics, and duct static pressure control are incorporated into the problem airflow. Fan power is also influ- enced if static pressure at the end of the longest duct line for effective, energy-efficient, and comfortable heating, ventilat- ing, and air-conditioning (HVAC) systems

107

Research program in elementary particle theory. Progress report for period ending June 30, 1980. [Syracuse Univ  

SciTech Connect (OSTI)

The High Energy Theory Group at Syracuse conducted basic research in several areas of current interest. A great deal of progress was made in the understanding of systems with unusual topological properties. A variational formulation of the equations that govern spinning particles in general relativity was accomplished. Perturbative as well as nonperturbative properties (incorporated in an effective Lagrangian) of quantum chromodynamics aspects were investigated. The question concerning gauge fixing in non-Abelian gauge theories was studied. Several new phenomenological aspects of unified electroweak interactions were explored with the object of finding experimental tests for models other than the currently accepted Salam-Weinberg theory. A unified electroweak model based on the group (SU(2) x U(1)) x U'(1) was investigated to account for the repeated fermionic generations and to incorporate CP violations and explain the CP violation as well as the Cabibbo-like angles in terms of the quark masses. A unified theory for all interactions (with the exception of gravitational interactions) based on the group SU(5) x SU(5) was proposed. Finally, axially symmetric multi-instanton solutions were shown to be generated from a set of conformal mappings. The work performed is described briefly; references are given.

Not Available

1980-01-01T23:59:59.000Z

108

The bipolar charging of submicrometer particles (0.03 [micrometers is less than or equal to] Dp [is less than or equal to] 0.31 [ micrometers]) by bipolar air ions: an experimental study  

E-Print Network [OSTI]

THE BIPOLAR CHARGING OF SUBMICROMETER PARTICLES (0. 03 um & D & 0. 31 um) BY BIPOLAR AIR IONS- P AN EXPERIMENTAL STUDY A Thesis by GARY JAY LAUGHLIN Submitted to Graduate College of Texas ASM University in Partial fulfillment... Charging of Subm1crometer Particles (0. 03 um D ' 0. 31 um) by Bipolar Air Ions- P An Experimental Study. (August 1982) Gary Jay Laughlin, B. S. , Texas AAN University Chairman of Advisory Committee: Dr. Andrew R. McFarl and Exper1mental measurements...

Laughlin, Gary Jay

2012-06-07T23:59:59.000Z

109

2013 Annual Research is like the air we breathe. It is critical to every-  

E-Print Network [OSTI]

. They advise state and federal agencies and interna- tional research organizations. We don't take, renewable energy and health care. We envision a future in which we draw energy from many sources, save lives-setter in research on climate science, wave energy, conservation biology, open-source software, forestry, agricul

Escher, Christine

110

Mexico City air quality research initiative. Volume IV. Characterization and measurement  

SciTech Connect (OSTI)

This volume describes the methods and the data gathered in an attempt to measure and characterize the meteorological factors and the concentration of different pollutants in the Mexico City Metropolitan Area. The main objective of this document was to provide input for the simulation models and to obtain information that could be used to test and improve the models` performance. Four field campaigns were conducted, as well as routine monitoring, in order to obtain a database of atmospheric dynamics and air pollution characteristics. Sections include Airborne measurements, Remote sensing measurements, and Traditional (in situ) measurements.

Mauzy, A. [ed.

1994-04-01T23:59:59.000Z

111

Air quality standards: Role of the Health Effects Institute in conducting research  

SciTech Connect (OSTI)

The Health Effects Institute is an independently governed organization, jointly funded by the public and private sectors to conduct scientific research, for regulatory purposes, concerning the health effects on humans of motor vehicle emissions. The consensus is that research HEI is performing is credible and of high quality. GAO believes that future funding should still be considered and that more open dialogue between the Environmental Protection Agency and HEI could help ensure that an increasing number of mutually agreed upon relevant research projects are undertaken.

Not Available

1986-01-01T23:59:59.000Z

112

Research in particle theory. Annual progress report, December 1, 1990--October 10, 1991  

SciTech Connect (OSTI)

In the test particle approximation, the scattering amplitude for two-particle scattering in (2+1)-dimensional Chern-Simons-Witten gravity and supergravity was computed and compared to the corresponding metric solutions. The formalism was then extended to the exact gauge theoretic treatment of the two-particle scattering problem and compared to `t Hooft`s results from the metric approach. We have studied dynamical symmetry breaking in 2+1 dimensional field theories. We have analyzed strong Extended Technicolor (ETC) models where the ETC coupling is close to a critical value. There are effective scalar fields in each of the theories. We have worked our how such scalar particles can be produced and how they decay. The {phi}{sup 4} field theory was investigated in the Schrodinger representation. The critical behavior was extracted in an arbitrary number of dimensions in second order of a systematic truncation approximation. The correlation exponent agrees with known values within a few percent.

Mansouri, F.; Suranyi, P; Wijewardhana, L.C.R.

1991-10-01T23:59:59.000Z

113

Summary of research and development effort on air and water cooling of gas turbine blades  

SciTech Connect (OSTI)

The review on air- and water-cooled gas turbines from the 1904 Lemale-Armengaud water-cooled gas turbine, the 1948 to 1952 NACA work, and the program at GE indicates that the potential of air cooling has been largely exploited in reaching temperatures of 1100/sup 0/C (approx. 2000/sup 0/F) in utility service and that further increases in turbine inlet temperature may be obtained with water cooling. The local heat flux in the first-stage turbine rotor with water cooling is very high, yielding high-temperature gradients and severe thermal stresses. Analyses and tests indicate that by employing a blade with an outer cladding of an approx. 1-mm-thick oxidation-resistant high-nickel alloy, a sublayer of a high-thermal-conductivity, high-strength, copper alloy containing closely spaced cooling passages approx. 2 mm in ID to minimize thermal gradients, and a central high-strength alloy structural spar, it appears possible to operate a water-cooled gas turbine with an inlet gas temperature of 1370/sup 0/C. The cooling-water passages must be lined with an iron-chrome-nickel alloy must be bent 90/sup 0/ to extend in a neatly spaced array through the platform at the base of the blade. The complex geometry of the blade design presents truly formidable fabrication problems. The water flow rate to each of many thousands of coolant passages must be metered and held to within rather close limits because the heat flux is so high that a local flow interruption of only a few seconds would lead to a serious failure.Heat losses to the cooling water will run approx. 10% of the heat from the fuel. By recoverying this waste heat for feedwater heating in a command cycle, these heat losses will give a degradation in the power plant output of approx. 5% relative to what might be obtained if no cooling were required. However, the associated power loss is less than half that to be expected with an elegant air cooling system.

Fraas, A.P.

1980-03-01T23:59:59.000Z

114

ambient air samples: Topics by E-print Network  

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

ambient air. A small amount of these nuclei mode particles contain solid ash from lube oil) South Coast Air Quality Management District California Air Resources Board Cummins...

115

`A Breath of Fresh Air' Launch Event of the Rural Research and Strategy Partnership  

E-Print Network [OSTI]

of research available through the Universities of Reading, Surrey and Sussex, through the University College by both rural and urban areas. It is noted that SEEDA intends to set up a new Sustainability Institute, ensure that the challenges on rural sustainability in the South East receive the necessary attention

116

COMBUSTION-GENERATED INDOOR AIR POLLUTION  

E-Print Network [OSTI]

The Japanese Union of Air Pollution Prevention Associations,The Status of Indoor Air Pollution Research 1976, GeometAnnual Meeting of the Air Pollution Control Association,

Hollowell, C.D.

2011-01-01T23:59:59.000Z

117

Review of research results for the photocatalytic oxidation of hazardous wastes in air  

SciTech Connect (OSTI)

Laboratory experiments of gas-phase photocatalytic oxidation (PCO) at NREL have focused on measurements that can help commercialize this technology for treating gaseous air streams. This effort proceeds earlier NREL work and studies conducted elsewhere which demonstrated the general applicability of PCO. The more recent work has concentrated on: (1) the kinetics of the PCO process; (2) the formation and destruction of intermediates; and (3) possible enhancements to improve the destruction rates. The results from these studies will be used to help design large scale PCO equipment and they will be used to evaluate the economics of the PCO process. For trichloroethylene and ethanol, extensive studies of the rates of destruction have yielded kinetic parameters for the destruction of intermediates as well as the substrate. The kinetics of intermediates is essential for sizing a large scale reactor, as complete conversion to carbon dioxide is often desired. The kinetic data from these laboratory studies has been used for analyzing IT`s pilot PCO reactor and has been used to suggest modifications to this unit. For compounds that are more difficult to destroy (such as the components of BTEX), rate enhancement experiments have been conducted. These compounds represent a very large market for this technology and improvement of the rate of the process should make it competitive. Towards this goal, the enhancement of the destruction of BTEX components have been studied. Experiments have demonstrated that there is a significant increase in the rates of destruction of BTEX with the addition of ozone. Preliminary economic assessments have shown that PCO with ozone may be cost competitive. Future laboratory experiments of PCO will focus on refinements of what has been learned. Rate measurements will also be expanded to include other compounds representing significant markets for the PCO technology.

Nimlos, M.R.; Wolfrum, E.J.; Gratson, D.A.; Watt, A.S.; Jacoby, W.A.; Turchi, C.

1995-01-01T23:59:59.000Z

118

FACE: Free-Air CO[sub 2] Enrichment for plant research in the field  

SciTech Connect (OSTI)

Research programs concerning the effects of Carbon Dioxide(CO)[sub 2] on cotton plants are described. Biological responses studied include foliage response to CO[sub 2] fluctuations; yield of cotton exposed to CO[sub 2] enrichment; responses of photosynthesis and stomatal conductance to elevated CO[sub 2] in field-grown cotton; cotton leaf and boll temperatures; root response to CO[sub 2] enrichment; and evaluations of cotton response to CO[sub 2] enrichment with canopy reflectance observations.

Hendrey, G.R. (ed.)

1992-08-01T23:59:59.000Z

119

FACE: Free-Air CO{sub 2} Enrichment for plant research in the field  

SciTech Connect (OSTI)

Research programs concerning the effects of Carbon Dioxide(CO){sub 2} on cotton plants are described. Biological responses studied include foliage response to CO{sub 2} fluctuations; yield of cotton exposed to CO{sub 2} enrichment; responses of photosynthesis and stomatal conductance to elevated CO{sub 2} in field-grown cotton; cotton leaf and boll temperatures; root response to CO{sub 2} enrichment; and evaluations of cotton response to CO{sub 2} enrichment with canopy reflectance observations.

Hendrey, G.R. [ed.

1992-08-01T23:59:59.000Z

120

Researching Complex Heat, Air and Moisture Interactions for a Wide-Range of Building Envelope Systems and Environmental Loads  

SciTech Connect (OSTI)

This document serves as the final report documenting work completed by Oak Ridge National Laboratory (ORNL) and the Fraunhofer Institute in Building Physics (Holzkirchen, Germany) under an international CRADA No. 0575 with Fraunhofer Institute of Bauphysics of the Federal Republic of Germany for Researching Complex Heat, Air and Moisture Interactions for a Wide Range of Building Envelope Systems and Environmental Loads. This CRADA required a multi-faceted approach to building envelope research that included a moisture engineering approach by blending extensive material property analysis, laboratory system and sub-system thermal and moisture testing, and advanced moisture analysis prediction performance. The Participant's Institute for Building physics (IBP) and the Contractor's Buildings Technology Center (BTC) identified potential research projects and activities capable of accelerating and advancing the development of innovative, low energy and durable building envelope systems in diverse climates. This allowed a major leverage of the limited resources available to ORNL to execute the required Department of Energy (DOE) directives in the area of moisture engineering. A joint working group (ORNL and Fraunhofer IBP) was assembled and a research plan was executed from May 2000 to May 2005. A number of key deliverables were produced such as adoption of North American loading into the WUFI-software. in addition the ORNL Weather File Analyzer was created and this has been used to address environmental loading for a variety of US climates. At least 4 papers have been co-written with the CRADA partners, and a chapter in the ASTM Manual 40 on Moisture Analysis and Condensation Control. All deliverables and goals were met and exceeded making this collaboration a success to all parties involves.

Karagiozis, A.N.

2007-05-15T23:59:59.000Z

Note: This page contains sample records for the topic "air particles research" 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

GEOPHYSICAL RESEARCH LETTERS, VOL. 27, NO. 21, PAGES 3465-3468, NOVEMBER 1, 2000 Increasing background ozone in surface air  

E-Print Network [OSTI]

that an important consideration for pollution control strategies is the O3 back- ground present in surface air over background ozone in surface air over the United States C.-Y. Cynthia Lin, Daniel J. Jacob, J. William Munger in surface air over the United States from 1980 to 1998 is examined using monthly probability distributions

Lin, C.-Y. Cynthia

122

Status of compact-toroid research using high energy particle beams  

SciTech Connect (OSTI)

A workshop on the use of high-energy particle beams to generate compact-toroid plasma geometries was held at the Department of Energy (Germantown) on June 26-27, 1980, for the purpose of assisting the Division of Applied Plasma Physics in formulating program plans for this work, and assessing its importance relative to the rest of the compact toroid (CT) program. The scope of the workshop is given in Appendix A, and the charge to the panel of advisors responsible for writing this report is given in Appendix B.

None

1980-10-01T23:59:59.000Z

123

Li et al., Aerosol and Air Quality Research, Vol. 6, No. 4, pp. 418-429, 2006 UV-Absorption-Based Measurements of Ozone and Mercury  

E-Print Network [OSTI]

interferences. For example, CMMs based on atomic absorption spectrometry (AAS) are subject to interferences of the Hg detection technique. Atomic absorption spectrometry (AAS) is one of the major techniques appliedLi et al., Aerosol and Air Quality Research, Vol. 6, No. 4, pp. 418-429, 2006 UV-Absorption

Li, Ying

124

Research on fundamental aspects of inorganic vapor and particle deposition in coal-fired systems. Seventh quarterly technical report, March 6, 1992--June 5, 1992  

SciTech Connect (OSTI)

Parallel research studies are underway on the following interrelated and fundamental subjects; Geometrical Approach to Determining the Sticking Probability of Particles Impacting on Convex Solid Surfaces; Correlations for High Schmidt Number Particle Deposition From Dilute Flowing Rational Engineering Suspensions; Average Capture Probability of Arriving Particles Which Are Distributed With ResPect to ImPact VelocitY and Incidence Angle (Relative to Deposit Substrate); Experimental and Theoretical Studies of Vapor Infiltration of Non-isothermal Granular Deposits; Effective Area/Volume of Populations of `MicroPorous` Aerosol Particles (Compact and `Fractal` Quasispherical Aggregates); Effects of Radiative Heat Transfer on the Coagulation Rates of Combustion-Generated Particles; Structure-Sensitivity of Total Mass Deposition Rates from Combustion Product Streams containing Coagulation-Aged Populations of Aggregated Primary Particles; and Na{sub 2}SO{sub 4} Chemical Vapor Deposition From Chlorine-containing Coal-Derived Gases.

Rosner, D.E.

1992-06-01T23:59:59.000Z

125

New Air Cleaning Strategies for Reduced Commercial Building Ventilation Energy  

SciTech Connect (OSTI)

Approximately ten percent of the energy consumed in U.S. commercial buildings is used by HVAC systems to condition outdoor ventilation air. Reducing ventilation rates would be a simple and broadly-applicable energy retrofit option, if practical counter measures were available that maintained acceptable concentrations of indoor-generated air pollutants. The two general categories of countermeasures are: 1) indoor pollutant source control, and 2) air cleaning. Although pollutant source control should be used to the degree possible, source control is complicated by the large number and changing nature of indoor pollutant sources. Particle air cleaning is already routinely applied in commercial buildings. Previous calculations indicate that particle filtration consumes only 10percent to 25percent of the energy that would otherwise be required to achieve an equivalent amount of particle removal with ventilation. If cost-effective air cleaning technologies for volatile organic compounds (VOCs) were also available, outdoor air ventilation rates could be reduced substantially and broadly in the commercial building stock to save energy. The research carried out in this project focuses on developing novel VOC air cleaning technologies needed to enable energy-saving reductions in ventilation rates. The minimum required VOC removal efficiency to counteract a 50percent reduction in ventilation rate for air cleaning systems installed in the HVAC supply airstream is modest (generally 20percent or less).

Sidheswaran, Meera; Destaillats, Hugo; Sullivan, Douglas P.; Fisk, William J.

2010-10-27T23:59:59.000Z

126

Particle deposition from turbulent flow: Review of published research and its applicability to ventilation ducts in commercial buildings  

E-Print Network [OSTI]

equation (51), kg m s -2 thermophoretic force on a particle,equation (74) thermophoretic force coefficient, equation (equation (50), m s -1 thermophoretic velocity of a particle,

Sippola, Mark R.; Nazaroff, William W.

2002-01-01T23:59:59.000Z

127

Research in experimental elementary particle physics. A proposal to the U.S. Department of Energy  

SciTech Connect (OSTI)

We report on the activities of the High Energy Physics Group at the University of Texas at Arlington for the period 1994-95. We propose the continuation of the research program for 1996-98 with strong participation in the detector upgrade and physics analysis work for the D0 Experiment at Fermilab, prototyping and pre-production studies for the muon and calorimeter systems for the ATLAS Experiment at CERN, and detector development and simulation studies for the PP2PP Experiment at Brookhaven.

Andrew P. White; Kaushik De; Paul A. Draper; Ransom Stephens

1995-04-13T23:59:59.000Z

128

Experimental Research of Air Source Heat Pump Frosting and Defrosting in a Double Stage-Coupling Heat Pump  

E-Print Network [OSTI]

, the effect of the heat storage tank to the air source heat pump defrosting is test. Owing to the existence of the heat storage tank, thermal inertia of the loop is relatively high. The frosting and defrosting course of the air source heat pump have little...

Wang, Z.; Gu, J.; Lu, Z.

2006-01-01T23:59:59.000Z

129

Exposure information in environmental health research: Current opportunities and future directions for particulate matter, ozone, and toxic air pollutants  

E-Print Network [OSTI]

fine particulates and nitrogen dioxide in the elderly withS.and Jerrett M. Nitrogen dioxide prediction in Southernto particles and nitrogen dioxide in Santiago, Chile.

McKone, Thomas E.

2008-01-01T23:59:59.000Z

130

Experimental Research and Performance Analysis of a Solar-Powered Air-conditioning System in a Green Building  

E-Print Network [OSTI]

Based on the green building of the Shanghai Institute of Architectural Science, a solar-powered adsorption air-conditioning system was designed. The operational performance under a typical operating mode in summer was studied, which includes...

Zhai, X.; Wang, R.; Dai, Y.; Wu, J.

2006-01-01T23:59:59.000Z

131

Deep-Sea Research I 51 (2004) 865884 A vertical model of particle size distributions and fluxes in the  

E-Print Network [OSTI]

processes as cell division and fecal pellet production or indirectly by coagulation of other particles. Once 2004 Abstract The downward transport of surface particle production constitutes an important mechanism

Jackson, George

132

Numerical Simulation Study on Transpired Solar Air Collector  

E-Print Network [OSTI]

The unglazed transpired solar air collector is now a well-recognized solar air heater for heating outside air directly. In this article, researchers introduced numerical simulation tools into the solar air collector research area, analyzed...

Wang, C.; Guan, Z.; Zhao, X.; Wang, D.

2006-01-01T23:59:59.000Z

133

airliner cabin air: Topics by E-print Network  

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

Window Location on a King Air 200 Aircraft:aerosol.atmos.und.edu) Objective A Raytheon Beechcraft King Air 200 aircraft has been used to obtain Condensation Particle...

134

air force aircraft: Topics by E-print Network  

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

Window Location on a King Air 200 Aircraft:aerosol.atmos.und.edu) Objective A Raytheon Beechcraft King Air 200 aircraft has been used to obtain Condensation Particle...

135

New Air Cleaning Strategies for Reduced Commercial Building Ventilation Energy  

E-Print Network [OSTI]

1) indoor pollutant source control, and 2) air cleaning.control is complicated by the large number and changing nature of indoor pollutant sources. Particle air

Sidheswaran, Meera

2010-01-01T23:59:59.000Z

136

Health effects of air pollution: some historical notes.  

E-Print Network [OSTI]

that was his first air pollution health effects committeeand direction of air pollution health effects research inof community air pollution, including health ef- fects, has

Whittenberger, J L

1989-01-01T23:59:59.000Z

137

Air Quality  

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

Why Air Quality Air Quality To preserve our existing wilderness-area air quality, LANL implements a conscientious program of air monitoring. April 12, 2012 Real-time data...

138

Experiments measuring particle deposition from fully developed turbulent flow in ventilation ducts  

SciTech Connect (OSTI)

Particle deposition in ventilation ducts influences particle exposures of building occupants and may lead to a variety of indoor air quality concerns. Experiments have been performed in a laboratory to study the effects of particle size and air speed on deposition rates of particles from turbulent air flows in galvanized steel and internally insulated ducts with hydraulic diameters of 15.2 cm. The duct systems were constructed of materials typically found in commercial heating, ventilating and air conditioning (HVAC) systems. In the steel duct system, experiments with nominal particle sizes of 1, 3, 5, 9 and 16 {micro}m were conducted at each of three nominal air speeds: 2.2, 5.3 and 9.0 m/s. In the insulated duct system, deposition rates of particles with nominal sizes of 1, 3, 5, 8 and 13 {micro}m were measured at nominal air speeds of 2.2, 5.3 and 8.8 m/s. Fluorescent techniques were used to directly measure the deposition velocities of monodisperse fluorescent particles to duct surfaces (floor, wall and ceiling) at two straight duct sections where the turbulent flow profile was fully developed. In steel ducts, deposition rates were higher to the duct floor than to the wall, which were, in turn, greater than to the ceiling. In insulated ducts, deposition was nearly the same to the duct floor, wall and ceiling for a given particle size and air speed. Deposition to duct walls and ceilings was greatly enhanced in insulated ducts compared to steel ducts. Deposition velocities to each of the three duct surface orientations in both systems were found to increase with increasing particle size or air velocity over the ranges studied. Deposition rates measured in the current experiments were in general agreement with the limited observations of similar systems by previous researchers.

Sippola, Mark R.; Nazaroff, William W.

2003-08-01T23:59:59.000Z

139

Tenth USA/Europe Air Traffic Management Research and Development Seminar (ATM2013) Assuring Safety of NextGen Procedures  

E-Print Network [OSTI]

of these efforts include increased efficiency, lessened environmental impact, and increased safety across the air arising from unsafe interactions among non-failed components, i.e., unplanned system and software behavior a failure prevention problem, allowing not only consideration of the causes of the component failure

Leveson, Nancy

140

COMBUSTION-GENERATED INDOOR AIR POLLUTION  

E-Print Network [OSTI]

The Status of Indoor Air Pollution Research 1976. GeometNovakov, T. : Formation of Pollution Particulate NitrogenGENERATED INDOOR AIR POLLUTION Dr. C. D. Hollowell, Dr. R.

Hollowell, C.D.

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air particles research" 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

Research on fundamental aspects of inorganic particle deposition on coal-fired equipment. Final technical report, 6 September 1990--31 October 1994  

SciTech Connect (OSTI)

We review results of our recent DOE-PETC research program on the deposition dynamics of combustion-generated particles in power production technologies. We outline and illustrate the results of recently developed methods to predict total surface deposition rates and associated convective heat transfer reductions for targets exposed to a distribution of particles suspended in a mainstream. Our methods combine the essential features of recently developed single particle sticking probability laws with correlations of the inertial impaction of particles on targets in high Reynolds number cross-flow, to develop formulae and ``universal`` graphs which provide the dependence of particle deposition rates, and associated reductions in convective heat transfer, on such system parameters as mainstream velocity, mean suspended particle size and target size. The deposition rate/deposit microstructue/properties prediction and correlation procedures illustrated be incorporated into improved ``fouling propensity indices,`` to motivate, evaluate and implement ``ruggedization`` and/or fouling reduction strategies, and/or incorporated (as subroutines) into more ``comprehensive`` CFD models of an entire power plant.

Rosner, D.E.

1995-01-01T23:59:59.000Z

142

UBC Centre for Blood Research: Fermentation Suite Brom A5 (F4) PDF.xls: FermentationProfile Air O2 rpm N2 Base Acid  

E-Print Network [OSTI]

UBC Centre for Blood Research: Fermentation Suite Brom A5 (F4) PDF.xls: FermentationProfile Air O2 rpm N2 Base Acid NH4OH Acetic Acid 8.6 16.0 Configuration 1 SP 4 - - - SP - 2 SP 3 0.000 Temp (oC) dO2 Fermentation (Hrs) pH rpm Temp Do OD CK (mg/50-L) MeOH (ml) dO2 (%)Temp (C) 40 20 60 80 0 100 6 8 4 2 0 10 28

Strynadka, Natalie

143

Research on thermophoretic and inertial aspects of ash particle deposition on heat exchanger surfaces in coal-fired equipment  

SciTech Connect (OSTI)

Our results on photophoresis reveal significant transport effects, mainly for particles which are carbonaceous (char-like, soot-like) rather than ash-like. Figure 2 shows the predicted dimensionless transport coefficient (proportional to the ordinary Stanton number for mass transfer) as a function of radiation/convective flux ratio and carbonaceous particle radius for laminar boundary layer flow past a wall cooled to 70% of the mainstream temperature, subjected to a radiative energy spectrum appropriate to a black-body source at ca. 1800K. One sees that large effects on the particle deposition rate are produced if the radiative flux is comparable to or exceeds the ordinary (Fourier) energy flux. We are now extending this work to include the effects of inevitable particle asymmetries, including agglomerate (shape) effects, and the role that energy transfer (eg. radiative cooling of larger particles in a population) might play in the coagulation dynamics and deposition dynamics of such aerosol populations.

Rosner, D.E.

1989-06-01T23:59:59.000Z

144

Inertial impaction air sampling device  

DOE Patents [OSTI]

An inertial impactor to be used in an air sampling device for collection of respirable size particles in ambient air which may include a graphite furnace as the impaction substrate in a small-size, portable, direct analysis structure that gives immediate results and is totally self-contained allowing for remote and/or personal sampling. The graphite furnace collects suspended particles transported through the housing by means of the air flow system, and these particles may be analyzed for elements, quantitatively and qualitatively, by atomic absorption spectrophotometry. 3 figs.

Dewhurst, K.H.

1987-12-10T23:59:59.000Z

145

Inertial impaction air sampling device  

DOE Patents [OSTI]

An inertial impactor to be used in an air sampling device for collection of respirable size particles in ambient air which may include a graphite furnace as the impaction substrate in a small-size, portable, direct analysis structure that gives immediate results and is totally self-contained allowing for remote and/or personal sampling. The graphite furnace collects suspended particles transported through the housing by means of the air flow system, and these particles may be analyzed for elements, quantitatively and qualitatively, by atomic absorption spectrophotometry.

Dewhurst, Katharine H. (13150 Wenonah SE. Apt. 727, Albuquerque, NM 87123)

1990-01-01T23:59:59.000Z

146

Inertial impaction air sampling device  

DOE Patents [OSTI]

An inertial impactor is designed which is to be used in an air sampling device for collection of respirable size particles in ambient air. The device may include a graphite furnace as the impaction substrate in a small-size, portable, direct analysis structure that gives immediate results and is totally self-contained allowing for remote and/or personal sampling. The graphite furnace collects suspended particles transported through the housing by means of the air flow system, and these particles may be analyzed for elements, quantitatively and qualitatively, by atomic absorption spectrophotometry. 3 figs.

Dewhurst, K.H.

1990-05-22T23:59:59.000Z

147

Research on thermophoretic and inertial aspects of ash particle deposition on heat exchanger surfaces in coal-fired equipment  

SciTech Connect (OSTI)

Little is yet known (theoretically or experimentally) about the simultaneous effects of particle inertia, particle thermophoresis and high mass loading on the important engineering problem of predicting deposition rates from flowing dusty'' gases. For this reason, we investigate the motion of particles present at nonnegligible mass loading in a flowing nonisothermal gaseous medium and their deposition on strongly cooled or heated solid objects by examining the instructive case of steady axisymmetric dusty gas'' flow between two infinite disks: an inlet (porous) disk and the impermeable target'' disk -- a flow not unlike that encountered in recent seeded-flame experiments. Since this stagnation flow/geometry admits interesting self-similar solutions at all Reynolds numbers, we are able to predict laminar flow mass-, momentum- and energy-transfer rate coefficients over a wide range of particle mass loadings, dimensionless particle relaxation times (Stokes numbers), dimensionless thermophoretic diffusivities, and gas Reynolds numbers. As a by-product, we illustrate the accuracy and possible improvement of our previous diffusion model'' for tightly coupled dusty gas systems. Moreover, we report new results illustrating the dependence of the important critical'' Stokes number (for incipient particle impaction) on particle mass loading and wall/gas temperature ratio for dust-laden gas motion towards overheated'' solid surfaces. The present formulation and insulating transport coefficients should not only be useful in explaining/predicting recent deposition rate trends in seeded'' flame experiments, but also highly mass-loaded systems of technological interest.

Rosner, D.E.

1989-03-01T23:59:59.000Z

148

Research on thermophoretic and inertial aspects of ash particle deposition on heat exchanger surfaces in coal-fired equipment. Quarterly technical report No. 3, March 1, 1987--May 31, 1987  

SciTech Connect (OSTI)

During this third quarter of Grant DE-FG22-86 PC 90756, we have obtained preliminary experimental results on the deposition behavior of submicron and supermicron solid particles (MgO, Al{sub 2}O{sub 3}) on a two-dimensional surface exposed to a high temperature/velocity particle ``laden`` atmospheric pressure jet. The uniform velocity (``plug flow``) jet, with temperatures up to about 1520 K, derives from a pressurized gaseous fuel microcombustion chamber (110 cc) equipped with a platinum guiding (exit) channel. Particles were generated by several methods (Berglund-Liu type aerosol generator, ultrasonic nebulizer, or syringe feeder with aerodynamic particle off-take) and were introduced into the combustion chamber with a carrier stream of nitrogen or air. Laser light scattering and reflectivity techniques were used for the study of particle deposition, supplemented by post-mortem microscopy on the exposed surface. We observed a linear deposition rate of submicron particles due to the thermophoretic mechanism (until the first layer was developed) under both high and low velocity conditions. On the contrary, supermicron particle deposits reach a steady-state, evidently due to a dynamic equilibrium between particle deposition and dislodging caused by the impacting particles. At several temperatures particle-free subsonic gas jets (up to 120 m/sec) were unable to remove the submicron particle layer.

Rosner, D.E.

1987-06-01T23:59:59.000Z

149

A Request for Planning Funds for a Research and Study Abroad Facility in Geneva, Switzerland in Affiliation with the European Laboratory for Particle Physics  

SciTech Connect (OSTI)

To create a research and study abroad program that would allow U.S. undergraduate students access to the world-leading research facilities at the European Organization for Nuclear Research (CERN), the World Health Organization, various operations of the United Nations and other international organizations based in Geneva.The proposal is based on the unique opportunities currently existing in Geneva. The Large Hadron Collider (LHC) is now operational at CERN, data are being collected, and research results are already beginning to emerge. At the same time, a related reduction of activity at U.S. facilities devoted to particle physics is expected. In addition, the U.S. higher-education community has an ever-increasing focus on international organizations dealing with world health pandemics, arms control and human rights, a nexus also centered in Geneva.

campbell, myron

2013-03-31T23:59:59.000Z

150

Developments to watch/cross flow of air is effective for separating coal from pyrite  

SciTech Connect (OSTI)

Cross flow of air is effective for separating coal from pyrite, limestone, clay, and shale while in the dry state to achieve a concentration of 90% purity at a competitive cost, according to West Virginia University Coal Research Bureau. The coal is crushed, screened to size, and placed in a vibrating feeder modified by adding small ridges parallel to the vibrating motion on the plate surface. The plate motion moves lighter coal particles slightly higher than the same size, heavier waste particles. A cross flow of air, which blows perpendicular to the vibratory motion, enhances the separation system.

Not Available

1980-11-01T23:59:59.000Z

151

Research on fundamental aspects of inorganic vapor and particle deposition in coal-fired systems. Eighth quarterly technical progress report, June 6, 1992--September 5, 1992  

SciTech Connect (OSTI)

In September 1990 DOE-PETC initiated at the Yale HTCRE Laboratory a systematic three-year research program directed toward providing engineers with the fundamentally-based design/optimization `tools` for economically predicting the dynamics of net deposit growth*, and thermophysical properties of the resulting microparticulate deposits in coal-fired systems. In light of the theoretical `program` based on the notion of ``self-regulation`` set forth in Rosner and Nagarajan (1987), this Task includes investigation of the effects of particle material properties and possible liquid phases on the capture properties of particulate deposits. For this purpose we exploit dynamical `many-body` computer simulation techniques. This approach will provide the required parametric dependencies (on such quantities as incident kinetic energy and angle, mechanical and thermophysical properties of the particles,{hor_ellipsis}) of a dimensionless ensemble-averaged particle capture fraction, relegating the role of direct laboratory experiment to verifying (or rejecting) some crucial features/consequences of the simulation route followed. Our ultimate goal is recommend `sticking` and `erosion` laws of mechanistic origin. The availability of such laws could dramatically increase the reliability of predicted deposition rates of inertially delivered particles, in the simultaneous presence of a condensed liquid phase within the growing particulate, deposit. Equally important, one could also rationally select conditions to avoid. troublesome deposition subject to other operational requirements.

Rosner, D.E.

1992-09-01T23:59:59.000Z

152

Research on thermophoretic and inertial aspects of ash particle deposition on heat exchanger surfaces in coal-fired equipment  

SciTech Connect (OSTI)

In support of the above mentioned objectives, we are carrying out theoretical studies in the following three interrelated areas: (a) Interaction of inertial- and thermophoretic effects in well-defined laminar dusty-gas'' flows; (b) Self-regulated sticking and deposit erosion in the simultaneous presence of vapor or submicron glue''; (c) Use of packed bed and tube-bank heat transfer and friction correlations to provide the basis for future tube-bank fouling predictions. During this second quarter of Grant DE-FG22-86 PC 90756. we have: (1) done preliminary gas velocity and temperature calibrations of the micro-combustor exit gas flow jet and initiated the development of both a monodispersed droplet feed system and powder feed system to provide monodispersed particle laden jets covering a broad spectrum of particle sizes (ca. 0.5--50 m diameter); and, (2) demonstrated the ability of impacting supermicron particles to remove predeposited submicron particles on a platinum target, using real-time optical reflectivity methods. These preliminary experiments will be extended and discussed in our next Quarterly Technical Report.

Rosner, D.E.

1987-03-01T23:59:59.000Z

153

AIR LECTURES HANDOUT 3 P Rhines 21 Feb 03 AIR: THE SMALL (AIR POLLUTION)  

E-Print Network [OSTI]

­ coal smoke in winter (home heating) with clear air, radiational cooling stratifies air SMOG- warm of Science Technology and Environment ( www.pcd.go.th ). Site Location SO2 SO2 * NO2 NO2 * CO (1hr) CO (1hr small for this fluid cleaning mechanism to work. It is the smallest particles that can reach

154

Research on thermophoretic and inertial aspects of the ash particle deposition on heat exchanger surfaces in coal-fired equipment  

SciTech Connect (OSTI)

In support of the above mentioned objectives, we have initiated theoretical studies in the following three interrelated areas : (a) Interaction of inertial- and thermophoretic effects in well-defined laminar dusty-gas'' flows. (b) Self-regulated sticking and deposit erosion in the simultaneous presence of vapor or submicron glue'' (c) Use of packed bed and tube-bank heat transfer and friction correlations to provide the basis for future tube-bank fouling predictions.During the first three months of Grant DE-FG22-86 PC 90756, we have: (1) Designed and initiated construction of the microcombustor particle-laden jet facility described in Section 3.1. (2) Initiated theoretical studies of the interaction of inertial and thermophoretic effects, the role of simultaneous vapor arrival in determining particle sticking and erosion probabilities, and mass transport phenomena in deep tube banks.

Rosner, D.E.

1986-12-01T23:59:59.000Z

155

Metal-air battery assessment  

SciTech Connect (OSTI)

The objective of this report is to evaluate the present technical status of the zinc-air, aluminum/air and iron/air batteries and assess their potential for use in an electric vehicle. In addition, this report will outline proposed research and development priorities for the successful development of metal-air batteries for electric vehicle application. 39 refs., 25 figs., 11 tabs.

Sen, R.K.; Van Voorhees, S.L.; Ferrel, T.

1988-05-01T23:59:59.000Z

156

Research on thermophoretic and inertial aspects of ash particle deposition on heat exchanger surfaces in coal-fired equipment  

SciTech Connect (OSTI)

During the present reporting period, we have initiated work on (a) the interpretation of our recent data (see QTR5) on deposition rates under the simultaneous influence of inertia and thermophoresis, (b) the possible rate of particle photophoresis in environments characterized by high radiative heat loads. and (c) the influence of particle size distributions on total mass deposition rates. The fruits of these initiatives will be reported in subsequent quarterly technical reports. Here, we focus on our recent theoretical results in the important but previously uncharted area of the relations between particulate deposition mechanisms, deposit microstructure and deposit properties. Experimental verification of some of the most interesting predictions will be the subject of future HTCRE-Lab studies. Recent discussions with fouling engineers have convinced us that despite recent advances in our ability to predict particle deposition rates in convective-diffusion environments, the important connection between resulting deposit properties (effective thermal conductivity permeability, [hor ellipsis]) and deposition mechanism remain poorly understood and only scarcely studied. Accordingly, as part of this DOE-PETC program we have developed a discrete stochastic model to simulate particulate deposition processes resulting from a combination of deposition mechanisms.

Rosner, D.E.

1988-03-01T23:59:59.000Z

157

Research on thermophoretic and inertial aspects of ash particle deposition on heat exchanger surfaces in coal-fired equipment: Quarterly technical report, September 1, 1987-November 30, 1987  

SciTech Connect (OSTI)

DOE-PETC has initiated at the Yale HTCRE Laboratory a systematic three-year experimental and theoretical research program directed toward providing engineers with the data, methods, and rational correlations needed to dramatically improve the generality and accuracy of prediction of inorganic particle deposition rates under typical coal combustion conditions (i.e., those leading to the importance of thermophoretically-enhanced diffusion (submicron mode) and the inertially-enhanced ''impaction'' (supermicron mode)), often in the presence of simultaneous alkali salt vapor condensation. 9 refs., 1 fig.

Rosner, D.E.

1987-12-01T23:59:59.000Z

158

Proceedings of the 3rd International Conference on Air Pollution from Agricultural Operations Research Triangle Park, NC October 12-15, 2003  

E-Print Network [OSTI]

Proceedings of the 3rd International Conference on Air Pollution from Agricultural Operations-1192, Japan. #12;Proceedings of the 3rd International Conference on Air Pollution from Agricultural Operations

Kentucky, University of

159

Single particle counting diagnostic system for measuring fine particulates at high number densities in research and industrial applications. Final report summarizing instrument development, validation and operating instructions  

SciTech Connect (OSTI)

Optical methods for particle size distribution measurements in practical high temperature environments have achieved feasibility and offer significant advantages over conventional sampling methods. The present report describes a mobile electro-optical system which has been designed for general use in a wide range of research and industrial environments. Specific features of this system include a method of providing in situ alignment and incorporation of an extinction measurement for application to optically thick aerosol flows. The instrument has demonstrated capability for measuring individual particles in the size range 0.25 to 100 microns at number densities up to 10/sup 12//m/sup 3/. In addition to demonstration of the system's wide dynamic range, we show the utility of the in situ alignment method in hot (1100 K) turbulent flows where beam steering can be a problem. As an example of the instrument's application, number and mass frequency distribution measurements of flyash and pulverized coal obtained in an atmospheric combustion exhaust simulator show that the raw pulverized coal contains large numbers of submicron particles similar to the flyash formed after combustion.

Holve, D.J.

1983-10-01T23:59:59.000Z

160

Research on thermophoretic and inertial aspects of ash particle: Deposition on heat exchanger surfaces in coal-fired equipment: Quarterly technical report, June 1, 1988--August 31, 1988  

SciTech Connect (OSTI)

DOE-PETC has initiated at the Yale HTCRE Laboratory a systematic three-year experimental and theoretical research program directed toward providing engineers with the data, methods, and rational correlations needed to improve the generality and accuracy of prediction of inorganic particle deposition rates under typical coal combustion conditions i.e., those leading to the importance of thermophoretically-enhanced diffusion (submicron mode) and the inertially-enhanced ''impaction'' (supermicron mode), often in the presence of simultaneous alkali salt vapor condensation. After a brief statement of objectives (Section 2) we outline our experimental and theoretical progress during this quarterly reporting period (Section 3), with our results summarized in the references documented in Section 5. Section 4 gives relevant administrative information (personnel, research plans). 15 refs., 3 figs.

Rosner, D.E.

1988-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "air particles research" 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

New Air Cleaning Strategies for Reduced Commercial Building Ventilation Energy ? FY11 Final Report  

E-Print Network [OSTI]

1) indoor pollutant source control, and 2) air cleaning.control is complicated by the large number and changing nature of indoor pollutant sources. Particle air

Sidheswaran, Meera

2013-01-01T23:59:59.000Z

162

E-Print Network 3.0 - air force journal Sample Search Results  

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

although these types of interaction... -fluid interaction based on the Smoothed Particle Hydro- dynamics (SPH) method. For the simulation of air... -water interaction, air...

163

Big Bang Day: 5 Particles - 5. The Next Particle  

ScienceCinema (OSTI)

Simon Singh looks at the stories behind the discovery of 5 of the universe's most significant subatomic particles: the Electron, the Quark, the Anti-particle, the Neutrino and the "next particle". 5. The Next Particle The "sparticle" - a super symmetric partner to all the known particles could be the answer to uniting all the known particles and their interactions under one grand theoretical pattern of activity. But how do researchers know where to look for such phenomena and how do they know if they find them? Simon Singh reviews the next particle that physicists would like to find if the current particle theories are to ring true.

None

2011-04-25T23:59:59.000Z

164

Natural Gas Heat Pump and Air Conditioner | Department of Energy  

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

Natural Gas Heat Pump and Air Conditioner Natural Gas Heat Pump and Air Conditioner Lead Performer: Thermolift - Stony Brook, NY Partners: -- New York State Energy Research &...

165

Chemical Characterization of Individual Particles and Residuals...  

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

Individual Particles and Residuals of Cloud Droplets and Ice Crystals Collected On Board Research Chemical Characterization of Individual Particles and Residuals of Cloud Droplets...

166

Research on fundamental aspects of inorganic vapor and particle deposition in coal-fired systems. Quarterly technical report, December 6, 1991--March 5, 1992  

SciTech Connect (OSTI)

In September 1990 DOE-PETC initiated at the Yale HTCRE Laboratory a systematic three-year research program directed toward providing engineers with the fundamentally-based design/optimization ``tools`` foreconomically predicting the dynamics of net deposit growth, and thermophysical properties of the resulting microparticulate deposits in coal-fired systems. The goal of our research in the area of mineral mattertransport is to advance the capability of making reliable engineering predictions of the dynamics of net deposit growth for surfaces exposed to the particle-laden products of coal combustion. To accomplish thisfor a wide variety of combustor types, coal types, and operating conditions, this capability must be based on a quantitative understanding of each of the important mechanisms of mineral matter transport, as well as the nature of the interactions between these substances and the prevailing ``fireside`` surface of deposits. This level of understanding and predictive capability could be translated into very significant cost reductions for coal-fired equipment design, development and operation. It is also expected that this research activity will not only directly benefit the ash deposition R&D community -- but also generically closely related technologies of importance to DOE (e.g. hot-gas clean-up, particulate solids handling,...).

Rosner, D.E.

1992-03-01T23:59:59.000Z

167

Room air monitor for radioactive aerosols  

DOE Patents [OSTI]

A housing assembly for use with a room air monitor for simultaneous collection and counting of suspended particles includes a casing containing a combination detector-preamplifier system at one end, a filter system at the other end, and an air flow system consisting of an air inlet formed in the casing between the detector-preamplifier system and the filter system and an air passageway extending from the air inlet through the casing and out the end opposite the detector-preamplifier combination. The filter system collects suspended particles transported directly through the housing by means of the air flow system, and these particles are detected and examined for radioactivity by the detector-preamplifier combination. 2 figs.

Balmer, D.K.; Tyree, W.H.

1987-03-23T23:59:59.000Z

168

E-Print Network 3.0 - airborne particles ii Sample Search Results  

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

Centre de mathmatiques Collection: Mathematics 47 Ris-R-1053(EN) Particulate Air Pollution with Summary: particulate matter in inner city air. The particle size...

169

Research on thermophoretic and inertial aspects of ash particle deposition on heat exchanger surfaces in coal-fired equipment. Quarterly report No. 9, September 1, 1988--November 30, 1988  

SciTech Connect (OSTI)

A real-time laser light-reflectivity technique is being used to study simultaneous thermophoretic and inertial influences on the deposition behavior of MgO particles produced via ultrasonic nebulization (submicrometer range). The deposition surface (a concave platinum ribbon) is exposed to a high velocity/temperature jet of alkali sulfate-free combustion products exiting from a seeded (C3{sub 3}H{sub 8}/air) microcombustor (110 cm{sup 3}). The reflectivity data were calibrated against deposition rates obtained from SEM pictures of the target, and were normalized with the nominal particle feed rate, in order to obtain the mass transfer Stanton number, St{sub m}, trends depicted in Figure 1. For the submicron (ca. 0.7{mu}m) particles inertial effects appear to set in at Stokes (Stk) numbers of O(10{sup {minus}2}) (an order of magnitude lower than the ones needed for ``pure`` inertial impaction), affecting significantly the dominant thermophoretic deposition mechanism. A first order (in Stk) theoretical analysis of the problem in which particle inertia is treated as equivalent to ``pressure diffusion,`` cannot explain the observed dependence of the deposition rate on Stk. We are presently formulating a Lagrangian approach, valid for all values of Stk, in order to interpret these data. In addition, a Single Particle Counter (SPC) and Transit Time Velocimeter (TTV), are being developed, to allow more precise measurements of particle feed rates and velocities.

Rosner, D.E.

1988-12-01T23:59:59.000Z

170

Research on thermophoretic and inertial aspects of ash particle deposition on heat exchanger surfaces in coal-fired equipment  

SciTech Connect (OSTI)

The overall goal of this research in the area of ash transport was to advance the capability of making reliable engineering predictions of the dynamics and consequences of net deposit growth for surfaces exposed to the products of coal combustion. To accomplish this for a wide variety of combustor types, coal types, and operating conditions, this capability must be based on a quantitative understanding of each of the important mechanisms of mineral matter transport, as well as the nature of the interactions between these substances and the prevailing fireside'' surface of the deposit. This level of understanding and predictive capability could ultimately be translated into very significant cost reductions for coal-fired equipment design, development and operation.

Rosner, D.E.

1990-05-01T23:59:59.000Z

171

The Air-Fluorescence Yield  

E-Print Network [OSTI]

Detection of the air-fluorescence radiation induced by the charged particles of extensive air showers is a well-established technique for the study of ultra-high energy cosmic rays. Fluorescence telescopes provide a nearly calorimetric measure of the primary energy. Presently the main source of systematic uncertainties comes from our limited accuracy in the fluorescence yield, that is, the number of fluorescence photons emitted per unit of energy deposited in the atmosphere by the shower particles. In this paper the current status of our knowledge on the fluorescence yield both experimental an theoretical will be discussed.

F. Arqueros; F. Blanco; D. Garcia-Pinto; M. Ortiz; J. Rosado

2008-07-30T23:59:59.000Z

172

Particle Physics Masterclass  

ScienceCinema (OSTI)

Students from six local high schools -- Farmingdale, Sachem East, Shoreham, Smithtown East, Ward Melville, and William Floyd -- came to Brookhaven National Laboratory to experience research with particle physicist Helio Takai. They were among more than 6,

Helio Takai

2010-01-08T23:59:59.000Z

173

E-Print Network 3.0 - ambient particles roles Sample Search Results  

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

a role in determining droplet size. The particle clouds appeared... -17 December 2004 Air Entrainment by Free Falling Streams of Particles Zeqin Liu, Paul Cooper and Peter W......

174

Nuclear Energy Research Initiative Project No. 02 103 Innovative Low Cost Approaches to Automating QA/QC of Fuel Particle Production Using On Line Nondestructive Methods for Higher Reliability Final Project Report  

SciTech Connect (OSTI)

This Nuclear Energy Research Initiative (NERI) project was tasked with exploring, adapting, developing and demonstrating innovative nondestructive test methods to automate nuclear coated particle fuel inspection so as to provide the United States (US) with necessary improved and economical Quality Assurance and Control (QA/QC) that is needed for the fuels for several reactor concepts being proposed for both near term deployment [DOE NE & NERAC, 2001] and Generation IV nuclear systems. Replacing present day QA/QC methods, done manually and in many cases destructively, with higher speed automated nondestructive methods will make fuel production for advanced reactors economically feasible. For successful deployment of next generation reactors that employ particle fuels, or fuels in the form of pebbles based on particles, extremely large numbers of fuel particles will require inspection at throughput rates that do not significantly impact the proposed manufacturing processes. The focus of the project is nondestructive examination (NDE) technologies that can be automated for production speeds and make either: (I) On Process Measurements or (II) In Line Measurements. The inspection technologies selected will enable particle “quality” qualification as a particle or group of particles passes a sensor. A multiple attribute dependent signature will be measured and used for qualification or process control decisions. A primary task for achieving this objective is to establish standard signatures for both good/acceptable particles and the most problematic types of defects using several nondestructive methods.

Ahmed, Salahuddin; Batishko, Charles R.; Flake, Matthew; Good, Morris S.; Mathews, Royce; Morra, Marino; Panetta, Paul D.; Pardini, Allan F.; Sandness, Gerald A.; Tucker, Brian J.; Weier, Dennis R.; Hockey, Ronald L.; Gray, Joseph N.; Saurwein, John J.; Bond, Leonard J.; Lowden, Richard A.; Miller, James H.

2006-02-28T23:59:59.000Z

175

Environmental Aspects of Air Transportation  

E-Print Network [OSTI]

Innovation Center #12;2 Aviation and Climate #12;3 Combustion Products Commercial jet fuel is essentially FOR AIR TRANSPORTATIONCENTER FOR AIR TRANSPORTATION SYSTEMS RESEARCHSYSTEMS RESEARCH Metron Aviation GMU, and the process inside real engines is considerably more complex. Typical emission rates for jet aircraft (grams

176

Particle Astrophysics  

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

Particle Astrophysics Particle Astrophysics Understanding discoveries at the Energy, Intensity, and Cosmic Frontiers Get Expertise Rajan Gupta (505) 667-7664 Email Bruce Carlsten...

177

Air cooled turbine component having an internal filtration system  

DOE Patents [OSTI]

A centrifugal particle separator is provided for removing particles such as microscopic dirt or dust particles from the compressed cooling air prior to reaching and cooling the turbine blades or turbine vanes of a turbine engine. The centrifugal particle separator structure has a substantially cylindrical body with an inlet arranged on a periphery of the substantially cylindrical body. Cooling air enters centrifugal particle separator through the separator inlet port having a linear velocity. When the cooling air impinges the substantially cylindrical body, the linear velocity is transformed into a rotational velocity, separating microscopic particles from the cooling air. Microscopic dust particles exit the centrifugal particle separator through a conical outlet and returned to a working medium.

Beeck, Alexander R. (Orlando, FL)

2012-05-15T23:59:59.000Z

178

OPTIMIZATION OF COAL PARTICLE FLOW PATTERNS IN LOW NOX BURNERS  

SciTech Connect (OSTI)

The proposed research is directed at evaluating the effect of flame aerodynamics on NO{sub x} emissions from coal fired burners in a systematic manner. This fundamental research includes both experimental and modeling efforts being performed at the University of Arizona in collaboration with Purdue University. The objective of this effort is to develop rational design tools for optimizing low NO{sub x} burners to the kinetic emissions limit (below 0.2 lb./MMBTU). Experimental studies include both cold and hot flow evaluations of the following parameters: flame holder geometry, secondary air swirl, primary and secondary inlet air velocity, coal concentration in the primary air and coal particle size distribution. Hot flow experiments will also evaluate the effect of wall temperature on burner performance. Cold flow studies will be conducted with surrogate particles as well as pulverized coal. The cold flow furnace will be similar in size and geometry to the hot-flow furnace but will be designed to use a laser Doppler velocimeter/phase Doppler particle size analyzer. The results of these studies will be used to predict particle trajectories in the hot-flow furnace as well as to estimate the effect of flame holder geometry on furnace flow field. The hot-flow experiments will be conducted in a novel near-flame down-flow pulverized coal furnace. The furnace will be equipped with externally heated walls. Both reactors will be sized to minimize wall effects on particle flow fields. The cold-flow results will be compared with Fluent computation fluid dynamics model predictions and correlated with the hot-flow results with the overall goal of providing insight for novel low NO{sub x} burner geometry's.

Jost O.L. Wendt; Gregory E. Ogden; Jennifer Sinclair; Stephanus Budilarto

2001-08-20T23:59:59.000Z

179

Phenomenology of cosmic ray air showers  

E-Print Network [OSTI]

The properties of cosmic rays with energies above 1PeV have to be deduced from the spacetime structure and particle content of the air showers which they initiate. In this review, a summary of the phenomenology of these giant air showers is presented. We describe the hadronic interaction models used to extrapolate results from collider data to ultra high energies, an also the main electromagnetic processes that govern the longitudinal shower evolution as well as the lateral spread of particles.

M. T. Dova

2005-05-30T23:59:59.000Z

180

Measurements of the chemical, physical, and optical properties of single aerosol particles  

E-Print Network [OSTI]

in air quality near a copper smelter, Science of the TotalParticles from a Copper Smelter, Environmental Science &

Moffet, Ryan Christopher

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air particles research" 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

Effects of air pollution on vascular thrombosis   

E-Print Network [OSTI]

Increases in air pollution, especially the particulate component, are associated with increased cardiovascular mortality, possibly through increases in thrombogenic mechanisms. The research presented in this thesis ...

Tabor, Caroline Mary

2011-07-05T23:59:59.000Z

182

Safeguarding indoor air quality  

SciTech Connect (OSTI)

California has created and implemented the first state program devoted exclusively to the investigation of nonindustrial indoor air quality. The program is responsible for promoting and conducting research on the determining factors of healthful indoor environments and is structured to obtain information about emission sources, ventilation effects, indoor concentrations, human activity patterns, exposures, health risks, control measures and public policy options. Data are gathered by a variety of methods, including research conducted by staff members, review of the available scientific literature, participation in technical meetings, contractual agreements with outside agencies, cooperative research projects with other groups and consultation with experts. 23 references, 1 figure, 1 table.

Sexton, K.; Wesolowski, J.J.

1985-01-01T23:59:59.000Z

183

Electrically recharged battery employing a packed/spouted bed metal particle electrode  

DOE Patents [OSTI]

A secondary metal air cell, employing a spouted/packed metal particle bed and an air electrode. More specifically a zinc air cell well suited for use in electric vehicles which is capable of being either electrically or hydraulically recharged.

Siu, Stanley C. (Alameda, CA); Evans, James W. (Piedmont, CA); Salas-Morales, Juan (Berkeley, CA)

1995-01-01T23:59:59.000Z

184

Air Resources: Prevention and Control of Air Contamination and Air  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists' ResearchThe OfficeUtility Fed. GovernmentFed. Government CommercialPollution, Air

185

Dynamic radioactive particle source  

DOE Patents [OSTI]

A method and apparatus for providing a timed, synchronized dynamic alpha or beta particle source for testing the response of continuous air monitors (CAMs) for airborne alpha or beta emitters is provided. The method includes providing a radioactive source; placing the radioactive source inside the detection volume of a CAM; and introducing an alpha or beta-emitting isotope while the CAM is in a normal functioning mode.

Moore, Murray E.; Gauss, Adam Benjamin; Justus, Alan Lawrence

2012-06-26T23:59:59.000Z

186

Scottish Air Pollution and Health Workshop  

E-Print Network [OSTI]

Scottish Air Pollution and Health Workshop Session 4 Joint Research Policy Needs and Interactions needs and how can we work together effectively on these to reduce the adverse effects of air pollution together effectively on these to reduce the adverse effects of air pollution in Scotland. Modelling

187

Analysis of Water Modeling of Air Entrainment  

E-Print Network [OSTI]

Analysis of Water Modeling of Air Entrainment S.C. Jain Professor and Research Engineer Dept. Civil, C., "Analysis of Water Modeling of Air Entrainment," in Proceedings of the 48th SFSA Technical An analysis is reported of the water modeling experiments of Bates et al. (1994) to study air entrainment

Beckermann, Christoph

188

Particle separation  

DOE Patents [OSTI]

Embodiments of a method for selecting particles, such as based on their morphology, is disclosed. In a particular example, the particles are charged and acquire different amounts of charge, or have different charge distributions, based on their morphology. The particles are then sorted based on their flow properties. In a specific example, the particles are sorted using a differential mobility analyzer, which sorts particles, at least in part, based on their electrical mobility. Given a population of particles with similar electrical mobilities, the disclosed process can be used to sort particles based on the net charge carried by the particle, and thus, given the relationship between charge and morphology, separate the particles based on their morphology.

Moosmuller, Hans (Reno, NV); Chakrabarty, Rajan K. (Reno, NV); Arnott, W. Patrick (Reno, NV)

2011-04-26T23:59:59.000Z

189

Research  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive Solar HomePromisingStories » RemovingResearch CORE-SHELL NANOPARTICLES AND

190

CATEE: Clean Air Through Energy Efficiency Conference  

E-Print Network [OSTI]

and musts often resort to drugs to alleviate symptoms. • Research shows that people spend over 50% of their time at home indoors. • Consumer awareness of IAQ is growing Why IAQ Matters © 2014 CirrusAir Technologies, Inc Sources: EPA, State of the Air... • Household cleaners © 2014 CirrusAir Technologies, Inc ESL-KT-14-11-27 CATEE 2014: Clean Air Through Efficiency Conference, Dallas, Texas Nov. 18-20 Current Filtration Systems © 2014 CirrusAir Technologies, Inc • The increased need for indoor air quality...

Tillman, S.

2014-01-01T23:59:59.000Z

191

Air Quality  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUCProductstwrmrAre theAdministratorCFM LEAPAgendaConditioning AirWhy » Air

192

ATMOSPHERIC AEROSOL RESEARCH ANNUAL REPORT 1975-76  

E-Print Network [OSTI]

of a) soot particles from propane-benzene combustion in air;tempera­ downstream from a propane Photoelectron spectraand carbon (Is) regions of propane soot particles produced

Novakov, T.

2010-01-01T23:59:59.000Z

193

Carbon-particle generator  

DOE Patents [OSTI]

A method and apparatus whereby small carbon particles are made by pyrolysis of a mixture of acetylene carried in argon. The mixture is injected through a nozzle into a heated tube. A small amount of air is added to the mixture. In order to prevent carbon build-up at the nozzle, the nozzle tip is externally cooled. The tube is also elongated sufficiently to assure efficient pyrolysis at the desired flow rates. A key feature of the method is that the acetylene and argon, for example, are premixed in a dilute ratio, and such mixture is injected while cool to minimize the agglomeration of the particles, which produces carbon particles with desired optical properties for use as a solar radiant heat absorber.

Hunt, A.J.

1982-09-29T23:59:59.000Z

194

Research on thermophoretic and inertial aspects of ash particle deposition on heat exchanger surfaces in coal-fired equipment: Quarterly technical report, June 1, 1987-August 31, 1987  

SciTech Connect (OSTI)

Our emphasis in the present program is on experimentally validating and developing rational, theoretical methods of predicting the role of inertia and ash particle thermophoresis in determining net deposition rates. We also wish to quantify how simultaneous vapor deposition (e.g., alkali sulfate) can influence the sticking and erosion associated with impacting particles. 6 refs., 2 figs.

Rosner, D.E.

1987-09-01T23:59:59.000Z

195

Air Quality: Construction Project Air Permit Requirements  

E-Print Network [OSTI]

Air Quality: Construction Project Air Permit Requirements Department: Chemical and General Safety Program: Air Quality Owner: Program Manager Authority: ES&H Manual, Chapter 30, Air Quality1 All manager or operator must submit the completed form to the air quality program manager before the project

Wechsler, Risa H.

196

Guidelines for Measuring Air Infiltration Heat Exchange Effectiveness (IHEE), Submitted to the Texas Higher Education Coordination Board Energy Research Application Program Project #227  

E-Print Network [OSTI]

. 12 Reference Anderlind, G., 1985, "Energy Consumption due to Air Infiltration," Proceedings of the 3rd ASHRAE/DOE/BTECC Conference on Thermal Performance of the Exterior Envelopes of Buildings, Clearwater Beach, FL, pp. 201-208 ASHRAE, 1981, "ASHRAE.... 1992c, "The Energy Impact of Combined Solar- Radiation/Infiltration/Conduction Effects in Walls and Attics," Proceedings of Thermal Guidelines for Measuring IHEE, P. 13 Performance of the Exterior Envelopes of Buildings, 5th ASHRAE/DOE/BTECC Conference...

Liu, M.; Claridge, D. E.

1993-01-01T23:59:59.000Z

197

The investigation of exhaust powered, automotive air cycle air conditioning  

E-Print Network [OSTI]

domestic automobiles and trucks because of its proven success. This system requires approximately 4 hp (2. 983 kW)[3] for operation snd employs a pressurized fluorinated hydrocarbon (R-12), hereafter fluorocarbon, as a refrigerant. Most of the research... extraction and avoid the use of a fluorocarbon refrigerant. The maJority of work involved with the new units has associated itself in the area of utilizing an absorption cycle or air cycle. The absorption air conditioning unit differs significantly from...

Holley, James Andrew

1978-01-01T23:59:59.000Z

198

OPTIMIZATION OF COAL PARTICLE FLOW PATTERNS IN LOW NOX BURNERS  

SciTech Connect (OSTI)

It is well understood that the stability of axial diffusion flames is dependent on the mixing behavior of the fuel and combustion air streams. Combustion aerodynamic texts typically describe flame stability and transitions from laminar diffusion flames to fully developed turbulent flames as a function of increasing jet velocity. Turbulent diffusion flame stability is greatly influenced by recirculation eddies that transport hot combustion gases back to the burner nozzle. This recirculation enhances mixing and heats the incoming gas streams. Models describing these recirculation eddies utilize conservation of momentum and mass assumptions. Increasing the mass flow rate of either fuel or combustion air increases both the jet velocity and momentum for a fixed burner configuration. Thus, differentiating between gas velocity and momentum is important when evaluating flame stability under various operating conditions. The research efforts described herein are part of an ongoing project directed at evaluating the effect of flame aerodynamics on NO{sub x} emissions from coal fired burners in a systematic manner. This research includes both experimental and modeling efforts being performed at the University of Arizona in collaboration with Purdue University. The objective of this effort is to develop rational design tools for optimizing low NO{sub x} burners. Experimental studies include both cold-and hot-flow evaluations of the following parameters: primary and secondary inlet air velocity, coal concentration in the primary air, coal particle size distribution and flame holder geometry. Hot-flow experiments will also evaluate the effect of wall temperature on burner performance.

Jost O.L. Wendt; Gregory E. Ogden; Jennifer Sinclair; Stephanus Budilarto

2001-09-04T23:59:59.000Z

199

Particle deposition in ventilation ducts  

SciTech Connect (OSTI)

Exposure to airborne particles is detrimental to human health and indoor exposures dominate total exposures for most people. The accidental or intentional release of aerosolized chemical and biological agents within or near a building can lead to exposures of building occupants to hazardous agents and costly building remediation. Particle deposition in heating, ventilation and air-conditioning (HVAC) systems may significantly influence exposures to particles indoors, diminish HVAC performance and lead to secondary pollutant release within buildings. This dissertation advances the understanding of particle behavior in HVAC systems and the fates of indoor particles by means of experiments and modeling. Laboratory experiments were conducted to quantify particle deposition rates in horizontal ventilation ducts using real HVAC materials. Particle deposition experiments were conducted in steel and internally insulated ducts at air speeds typically found in ventilation ducts, 2-9 m/s. Behaviors of monodisperse particles with diameters in the size range 1-16 {micro}m were investigated. Deposition rates were measured in straight ducts with a fully developed turbulent flow profile, straight ducts with a developing turbulent flow profile, in duct bends and at S-connector pieces located at duct junctions. In straight ducts with fully developed turbulence, experiments showed deposition rates to be highest at duct floors, intermediate at duct walls, and lowest at duct ceilings. Deposition rates to a given surface increased with an increase in particle size or air speed. Deposition was much higher in internally insulated ducts than in uninsulated steel ducts. In most cases, deposition in straight ducts with developing turbulence, in duct bends and at S-connectors at duct junctions was higher than in straight ducts with fully developed turbulence. Measured deposition rates were generally higher than predicted by published models. A model incorporating empirical equations based on the experimental measurements was applied to evaluate particle losses in supply and return duct runs. Model results suggest that duct losses are negligible for particle sizes less than 1 {micro}m and complete for particle sizes greater than 50 {micro}m. Deposition to insulated ducts, horizontal duct floors and bends are predicted to control losses in duct systems. When combined with models for HVAC filtration and deposition to indoor surfaces to predict the ultimate fates of particles within buildings, these results suggest that ventilation ducts play only a small role in determining indoor particle concentrations, especially when HVAC filtration is present. However, the measured and modeled particle deposition rates are expected to be important for ventilation system contamination.

Sippola, Mark R.

2002-09-01T23:59:59.000Z

200

CSP Tower Air Brayton Combustor  

Broader source: Energy.gov [DOE]

This fact sheet describes a concentrating solar power tower air Brayton combustor project awarded under the DOE's 2012 SunShot CSP R&D award program. The team, led by the Southwest Research Institute, is working to develop an external combustor that allows for the mixing of CSP-heated air with natural gas in hybridized power plants. This project aims to increase the temperature capabilities of the CSP tower air receiver and gas turbine to 1,000şC and achieve energy conversion efficiencies greater than 50%.

Note: This page contains sample records for the topic "air particles research" 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

7, 64136457, 2007 Single particle mass  

E-Print Network [OSTI]

to use Mexico City as a case study of air pollution mitigation while major advances continue to improve the regional air quality.5 To help decrease particulate matter (PM) pollution in Mexico City, ACPD 7, 6413­6457, 2007 Single particle mass spectrometry of Mexico City aerosols R. C. Moffet

Paris-Sud XI, Université de

202

inAir: A Longitudinal study of Indoor Air Quality Measurements and Visualizations  

E-Print Network [OSTI]

pollutants are colorless and odorless, while many activities are inconspicuous and routine. We implemented inAir. Among those, air pollution and its effects on health have been researched extensively over past several decades [13]. In particular, the health effects of air pollution cover a wide variety of respiratory

Mankoff, Jennifer

203

Air Pollution and Mortality in 20 U.S. Cities Particulate Air Pollution and Mortality in 20 U.S. Cities: 1987-1994  

E-Print Network [OSTI]

Air Pollution and Mortality in 20 U.S. Cities 1 Particulate Air Pollution and Mortality in 20 U Word Count: 3032 #12;Air Pollution and Mortality in 20 U.S. Cities 2 Abstract Background: Time-series analyses have linked contemporary levels of air pollution, particularly particles, to daily mortality

Dominici, Francesca

204

Development of Improved Models and Designs for Coated-Particle Gas Reactor Fuels -- Final Report under the International Nuclear Energy Research Initiative (I-NERI)  

SciTech Connect (OSTI)

The objective of this INERI project was to develop improved fuel behavior models for gas reactor coated-particle fuels and to explore improved coated-particle fuel designs that could be used reliably at very high burnups and potentially in gas-cooled fast reactors. Project participants included the Idaho National Engineering Laboratory (INEEL), Centre Étude Atomique (CEA), and the Massachusetts Institute of Technology (MIT). To accomplish the project objectives, work was organized into five tasks.

David Petti; Philippe Martin; Mayeul Phélip; Ronald Ballinger; Petti does not have NT account

2004-12-01T23:59:59.000Z

205

Air Quality and Emissions Impacts of Heat Island Mitigation Strategies  

E-Print Network [OSTI]

Air Quality and Emissions Impacts of Heat Island Mitigation Strategies ENVIRONMENTAL AREA RESEARCH the temperature of the ground surface and the ambient air. This situation creates areas called urban heat summertime temperatures reduces electricity demand for air conditioning, which lowers air pollution levels

206

Health Benefits of Particle Filtration  

SciTech Connect (OSTI)

The evidence of health benefits of particle filtration in homes and commercial buildings is reviewed. Prior reviews of papers published before 2000 are summarized. The results of 16 more recent intervention studies are compiled and analyzed. Also reviewed are four studies that modeled health benefits of using filtration to reduce indoor exposures to particles from outdoors. Prior reviews generally concluded that particle filtration is, at best, a source of small improvements in allergy and asthma health effects; however, many early studies had weak designs. A majority of recent intervention studies employed strong designs and more of these studies report statistically significant improvements in health symptoms or objective health outcomes, particularly for subjects with allergies or asthma. The percentage improvement in health outcomes is typically modest, e.g., 7percent to 25percent. Delivery of filtered air to the breathing zone of sleeping allergic or asthmatic persons may be more consistently effective in improving health than room air filtration. Notable are two studies that report statistically significant improvements, with filtration, in markers that predict future adverse coronary events. From modeling, the largest potential benefits of indoor particle filtration may be reductions in morbidity and mortality from reducing indoor exposures to particles from outdoor air.

Fisk, William J.

2013-10-01T23:59:59.000Z

207

Health Benefits of Particle Filtration  

SciTech Connect (OSTI)

The evidence of health benefits of particle filtration in homes and commercial buildings is reviewed. Prior reviews of papers published before 2000 are summarized. The results of 16 more recent intervention studies are compiled and analyzed. Also, reviewed are four studies that modeled health benefits of using filtration to reduce indoor exposures to particles from outdoors. Prior reviews generally concluded that particle filtration is, at best, a source of small improvements in allergy and asthma health effects; however, many early studies had weak designs. A majority of recent intervention studies employed strong designs and more of these studies report statistically significant improvements in health symptoms or objective health outcomes, particularly for subjects with allergies or asthma. The percent age improvement in health outcomes is typically modest, for example, 7percent to 25percent. Delivery of filtered air to the breathing zone of sleeping allergic or asthmatic persons may be more consistently effective in improving health than room air filtration. Notable are two studies that report statistically significant improvements, with filtration, in markers that predict future adverse coronary events. From modeling, the largest potential benefits of indoor particle filtration may be reductions in morbidity and mortality from reducing indoor exposures to particles from outdoor air.

Fisk, William J.

2013-10-01T23:59:59.000Z

208

E-Print Network 3.0 - air operating permit Sample Search Results  

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

ratio of the heated ambient air... the amount of stack particulate emis SlOns. Air pollution ... Source: Columbia University - Waste-to-Energy Research and Technology Council...

209

E-Print Network 3.0 - air space violations Sample Search Results  

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

George Mason University, Center for Air Transportation Systems Research Collection: Energy Storage, Conversion and Utilization ; Engineering 4 2010 Air Canada Elite Program...

210

E-Print Network 3.0 - air fresheners emissions Sample Search...  

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

air cleaning equipment Summary: generation from ion generators in the presence of a solid air freshener. The central research question... , and portable units that are...

211

E-Print Network 3.0 - aircraft air pollution Sample Search Results  

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

air pollution Search Powered by Explorit Topic List Advanced Search Sample search results for: aircraft air pollution Page: << < 1 2 3 4 5 > >> 1 Research in Military Aircraft...

212

E-Print Network 3.0 - air bags compared Sample Search Results  

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

secondary air to the center of the vortex. Air follows... in the flue gas. The present vortex incinerator was ... Source: Columbia University - Waste-to-Energy Research and...

213

E-Print Network 3.0 - acceptable indoor air Sample Search Results  

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

Engineering Summary: pollutants, human exposure to indoor air pollution, and control of indoor pollutants. Much of the research... building energy, indoor air quality, or...

214

E-Print Network 3.0 - administration indoor air Sample Search...  

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

Engineering Summary: pollutants, human exposure to indoor air pollution, and control of indoor pollutants. Much of the research... building energy, indoor air quality, or...

215

New Mexico Center for Particle Physics (NMCPP) -- Task A: Collider Physics; Task A2: Collider Physics; Task B: Particle Astrophysics  

SciTech Connect (OSTI)

During the period 2010-­?2012, we conducted particle physics research with the ATLAS and CDF experiments and developed new instrumentation for tracking fundamental particles.

Matthews, John; Seidel, Sally; Gold, Michael

2013-11-05T23:59:59.000Z

216

Urban Form and Air Pollution in US Urban Areas!  

E-Print Network [OSTI]

of Minnesota Grant No. 0853467 #12;Air Pollution Impacts on Health 2 EPA, 2010 Ozone PM2.5 PM10 Lead NitrogenUrban Form and Air Pollution in US Urban Areas! Center for Transportation Studies Research #12;Purpose and Research Questions 4 Purpose: Explore relationship between air pollution and urban

Minnesota, University of

217

National Security Science and Technology Initiative: Air Cargo Screening  

SciTech Connect (OSTI)

The non-intrusive inspection (NII) of consolidated air cargo carried on commercial passenger aircraft continues to be a technically challenging, high-priority requirement of the Department of Homeland Security's Science and Technology Directorate (DHS S&T), the Transportation Security Agency and the Federal Aviation Administration. The goal of deploying a screening system that can reliably and cost-effectively detect explosive threats in consolidated cargo without adversely affecting the flow of commerce will require significant technical advances that will take years to develop. To address this critical National Security need, the Battelle Memorial Institute (Battelle), under a Cooperative Research and Development Agreement (CRADA) with four of its associated US Department of Energy (DOE) National Laboratories (Oak Ridge, Pacific Northwest, Idaho, and Brookhaven), conducted a research and development initiative focused on identifying, evaluating, and integrating technologies for screening consolidated air cargo for the presence of explosive threats. Battelle invested $8.5M of internal research and development funds during fiscal years 2007 through 2009. The primary results of this effort are described in this document and can be summarized as follows: (1) Completed a gap analysis that identified threat signatures and observables, candidate technologies for detection, their current state of development, and provided recommendations for improvements to meet air cargo screening requirements. (2) Defined a Commodity/Threat/Detection matrix that focuses modeling and experimental efforts, identifies technology gaps and game-changing opportunities, and provides a means of summarizing current and emerging capabilities. (3) Defined key properties (e.g., elemental composition, average density, effective atomic weight) for basic commodity and explosive benchmarks, developed virtual models of the physical distributions (pallets) of three commodity types and three explosive benchmarks combinations, and conducted modeling and simulation studies to begin populating the matrix of commodities, threats, and detection technologies. (4) Designed and fabricated basic (homogeneous) commodity test pallets and fabricated inert stimulants to support experiments and to validate modeling/simulation results. (5) Developed/expanded the team's capabilities to conduct full-scale imaging (neutron and x-ray) experiments of air cargo commodities and explosive benchmarks. (6) Conducted experiments to improve the collection of trace particles of explosives from a variety of surfaces representative of air cargo materials by means of mechanical (air/vibration/pressure), thermal, and electrostatic methods. Air cargo screening is a difficult challenge that will require significant investment in both research and development to find a suitable solution to ensure the safety of passengers without significantly hindering the flow of commodities. The initiative funded by Battelle has positioned this group to make major contributions in meeting the air cargo challenge by developing collaborations, developing laboratory test systems, improving knowledge of the challenges (both technical and business) for air cargo screening, and increasing the understanding of the capabilities for current inspection methods (x-ray radiography, x-ray backscatter, etc.) and potential future inspection methods (neutron radiography, fusion of detector modalities, advanced trace detection, etc.). Lastly, air cargo screening is still an issue that will benefit from collaboration between Department of Energy Laboratories and Battelle. On January 7, 2010, DHS Secretary Napolitano joined White House Press Secretary Robert Gibbs and Assistant to the President for Counterterrorism and Homeland Security John Brennan to announce several recommendations DHS has made to the President for improving the technology and procedures used to protect air travel from acts of terrorism. (This announcement followed the 25 Dec'09 Delta/Northwest Airlines Flight 253 terror attack.) Secretary Napolitano out

Bingham, Philip R [ORNL; White, Tim [Pacific Northwest National Laboratory (PNNL); Cespedes, Ernesto [Idaho National Laboratory (INL); Bowerman, Biays [Brookhaven National Laboratory (BNL); Bush, John [Battelle

2010-11-01T23:59:59.000Z

218

GEOPHYSICAL RESEARCH LETTERS, VOL. 26, NO. 13, PAGES 1785-1788, JULY 1, 1999 Current sheet control of recurrent particle increases at  

E-Print Network [OSTI]

solar wind far from the Sun along interfaces which are inclined relative to the equator in the same/n alpha particle intensity. The next panel shows the solar wind speed. In the bottom panel we show wind of the streamer belt to the high-speed solar wind flow of the polar coronal hole, and back, every

Sanahuja, Blai

219

Research on thermophoretic and inertial aspects of ash particle deposition on heat exchanger surfaces in coal-fired equipment. Quarterly techical report, December 1, 1986--February 28, 1987  

SciTech Connect (OSTI)

In support of the above mentioned objectives, we are carrying out theoretical studies in the following three interrelated areas: (a) Interaction of inertial- and thermophoretic effects in well-defined laminar ``dusty-gas`` flows; (b) Self-regulated sticking and deposit erosion in the simultaneous presence of vapor or submicron ``glue``; (c) Use of packed bed and tube-bank heat transfer and friction correlations to provide the basis for future tube-bank fouling predictions. During this second quarter of Grant DE-FG22-86 PC 90756. we have: (1) done preliminary gas velocity and temperature calibrations of the micro-combustor exit gas flow jet and initiated the development of both a monodispersed droplet feed system and powder feed system to provide monodispersed particle laden jets covering a broad spectrum of particle sizes (ca. 0.5--50 m diameter); and, (2) demonstrated the ability of impacting supermicron particles to remove predeposited submicron particles on a platinum target, using real-time optical reflectivity methods. These preliminary experiments will be extended and discussed in our next Quarterly Technical Report.

Rosner, D.E.

1987-03-01T23:59:59.000Z

220

The effects of galvanic corrosion on air conditioner performance  

E-Print Network [OSTI]

Corrosion of air conditioner outdoor heat exchangers (condensers) poses a significant problem for consumers living in coastal regions. This research sought to experimentally determine effects of galvanic corrosion on air conditioner condenser coils...

Grisham, Phillip Ryan

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air particles research" 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

Air Leakage and Air Transfer Between Garage and Living Space  

SciTech Connect (OSTI)

This research project focused on evaluation of air transfer between the garage and living space in a single-family detached home constructed by a production homebuilder in compliance with the 2009 International Residential Code and the 2009 International Energy Conservation Code. The project gathered important information about the performance of whole-building ventilation systems and garage ventilation systems as they relate to minimizing flow of contaminated air from garage to living space. A series of 25 multi-point fan pressurization tests and additional zone pressure diagnostic testing characterized the garage and house air leakage, the garage-to-house air leakage, and garage and house pressure relationships to each other and to outdoors using automated fan pressurization and pressure monitoring techniques. While the relative characteristics of this house may not represent the entire population of new construction configurations and air tightness levels (house and garage) throughout the country, the technical approach was conservative and should reasonably extend the usefulness of the results to a large spectrum of house configurations from this set of parametric tests in this one house. Based on the results of this testing, the two-step garage-to-house air leakage test protocol described above is recommended where whole-house exhaust ventilation is employed. For houses employing whole-house supply ventilation (positive pressure) or balanced ventilation (same pressure effect as the Baseline condition), adherence to the EPA Indoor airPLUS house-to-garage air sealing requirements should be sufficient to expect little to no garage-to-house air transfer.

Rudd, A.

2014-09-01T23:59:59.000Z

222

Particle size effects in particle-particle triboelectric charging studied with an integrated fluidized bed and electrostatic separator system  

SciTech Connect (OSTI)

Fundamental studies of triboelectric charging of granular materials via particle-particle contact are challenging to control and interpret because of foreign material surfaces that are difficult to avoid during contacting and measurement. The measurement of particle charge itself can also induce charging, altering results. Here, we introduce a completely integrated fluidized bed and electrostatic separator system that charges particles solely by interparticle interactions and characterizes their charge on line. Particles are contacted in a free-surface fluidized bed (no reactor walls) with a well-controlled fountain-like flow to regulate particle-particle contact. The charged particles in the fountain are transferred by a pulsed jet of air to the top of a vertically-oriented electrostatic separator consisting of two electrodes at oppositely biased high voltage. The free-falling particles migrate towards the electrodes of opposite charge and are collected by an array of cups where their charge and size can be determined. We carried out experiments on a bidisperse size mixture of soda lime glass particles with systematically varying ratios of concentration. Results show that larger particles fall close to the negative electrode and smaller particles fall close to the positive electrode, consistent with theory and prior experiments that larger particles charge positively and smaller particles charge negatively. The segregation of particles by charge for one of the size components is strongest when its collisions are mostly with particles of the other size component; thus, small particles segregate most strongly to the negative sample when their concentration in the mixture is small (and analogous results occur for the large particles). Furthermore, we find additional size segregation due to granular flow, whereby the fountain becomes enriched in larger particles as the smaller particles are preferentially expelled from the fountain.

Bilici, Mihai A.; Toth, Joseph R.; Sankaran, R. Mohan; Lacks, Daniel J. [Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7217 (United States)

2014-10-15T23:59:59.000Z

223

E-Print Network 3.0 - airs volumetric cloud Sample Search Results  

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

to determine the volumetric flow rate of entrained air as a function... -17 December 2004 Air Entrainment by Free Falling Streams of Particles Zeqin Liu, Paul Cooper and Peter W......

224

Metal-Air Batteries  

SciTech Connect (OSTI)

Metal-air batteries have much higher specific energies than most currently available primary and rechargeable batteries. Recent advances in electrode materials and electrolytes, as well as new designs on metal-air batteries, have attracted intensive effort in recent years, especially in the development of lithium-air batteries. The general principle in metal-air batteries will be reviewed in this chapter. The materials, preparation methods, and performances of metal-air batteries will be discussed. Two main metal-air batteries, Zn-air and Li-air batteries will be discussed in detail. Other type of metal-air batteries will also be described.

Zhang, Jiguang; Bruce, Peter G.; Zhang, Gregory

2011-08-01T23:59:59.000Z

225

Free Air C02 Enrichment (FACE) Research Data from the Oak Ridge FACE Site and Experiment on CO2 Enrichment of Sweetgum  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

The facility was established with support from the ORNL Director's R&D Fund and the Biological and Environmental Research program of the U. S. Department of Energy Office of Science. Additional support was provided by the Terrestrial Ecology and Global Change (TECO) program through the National Science Foundation. This project was part of the CO2 research network fostered by the Global Change and Terrestrial Ecosystems core project of the International Geosphere-Biosphere Programme. Results from the experiment contributed to the Terrestrial Ecosystem Response to Atmospheric and Climatic Change (TERACC) project, a 5-year initiative integrating experimental data and global change modeling. Data from the ORNL FACE experiment are being used in an model benchmarking activity at the National Center for Ecological Analysis and Synthesis. [Copied from http://face.ornl.gov/goals.html

226

REVIEW OF PARTICLE PHYSICS  

E-Print Network [OSTI]

ONLINE PARTICLE PHYSICS INFORMATION 1.3. Particle Physics Information Platforms . . . . . . . . .14. Particle Physics Education and Outreach

Beringer, Juerg

2013-01-01T23:59:59.000Z

227

Review of Particle Physics  

E-Print Network [OSTI]

11. Particle Physics Education Sites . . . . . . . . .ONLINE PARTICLE PHYSICS INFORMATION 1.11. Particle Physics Education Sites . . . . . . . . . . 12.

Nakamura, Kenzo

2010-01-01T23:59:59.000Z

228

Air temperature thresholds for indoor comfort and perceived air quality  

E-Print Network [OSTI]

in the Netherlands, Indoor Air 2, 127 – 136. BuildingPaliaga, G. (2009) Moving air for comfort. ASHRAE Journal,ventilation system on perceived air quality, Indoor Air

Zhang, Hui; Edward, Arens; Pasut, Wilmer

2012-01-01T23:59:59.000Z

229

WHY CHAOTIC MIXING OF PARTICLES IS INEVITABLE IN THE DEEP LUNG Akira Tsuda1  

E-Print Network [OSTI]

residual air to land on the septal surface. Classical fluid mechanics theory excludes flow- induced mixing of the inhaled particles (e.g., particulate pollutants or therapeutic drug particles) actually deposits on the alveolar surface depends on how the particle-laden tidal air mixes with the alveolar residual gas, so

Hydon, Peter

230

PARTICLES OF DIFFERENCE.  

SciTech Connect (OSTI)

It is no longer appropriate, if it ever was, to think of atmospheric aerosols as homogeneous spheres of uniform composition and size. Within the United States, and even more globally, not only the mass loading but also the composition, morphology, and size distribution of atmospheric aerosols are highly variable, as a function of location, and at a given location as a function of time. Particles of a given aerodynamic size may differ from one another, and even within individual particles material may be inhomogeneously distributed, as for example, carbon spherules imbedded in much larger sulfate particles. Some of the particulate matter is primary, that is, introduced into the atmosphere directly as particles, such as carbon particles in diesel exhaust. Some is secondary, that is, formed in the atmosphere by gas-to-particle conversion. Much of the material is inorganic, mainly sulfates and nitrates resulting mainly from energy-related emissions. Some of the material is carbonaceous, in part primary, in part secondary, and of this material some is anthropogenic and some biogenic. While the heterogeneity of atmospheric aerosols complicates the problem of understanding their loading and distribution, it may well be the key to its solution. By detailed examination of the materials comprising aerosols it is possible to infer the sources of these materials. It may be possible as well to identify specific health impairing agents. The heterogeneity of aerosol particles is thus the key to identifying their sources, to understanding the processes that govern their loading and properties, and to devising control strategies that are both effective and efficient. Future research must therefore take cognizance of differences among aerosol particles and use these differences to advantage.

SCHWARTZ,S.E.

2000-09-21T23:59:59.000Z

231

Inertial microfluidics for particle separation and filtration.  

E-Print Network [OSTI]

??Filtration and separation of particles has numerous industrial and research applications in biology and medicine. In this work, inertial microfluidics is used to develop devices… (more)

Bhagat, Ali Asgar Saleem

2009-01-01T23:59:59.000Z

232

Moving air for comfort  

E-Print Network [OSTI]

Brager, L. Zagreus. 2007, “Air movement preferences observed709-731. 9. Toftum, J. 2004. “Air movement – good or bad? ”Indoor Air 14, pp 40-45. 10. Gong, N. , K. Tham, A. Melikov,

Arens, Edward; Turner, Stephen; Zhang, Hui; Paliaga, Gwelen

2009-01-01T23:59:59.000Z

233

Feasibility of air capture  

E-Print Network [OSTI]

Capturing CO2 from air, referred to as Air Capture, is being proposed as a viable climate change mitigation technology. The two major benefits of air capture, reported in literature, are that it allows us to reduce the ...

Ranjan, Manya

2010-01-01T23:59:59.000Z

234

Partitioning Complexity in Air Traffic Management Task  

E-Print Network [OSTI]

Cognitive complexity is a term that appears frequently in air traffic control (ATC) research literature, yet there is little principled investigation of the potential sources of cognitive complexity. Three distinctly ...

Cummings, M. L.

2006-01-01T23:59:59.000Z

235

AEROSOL PARTICLE COLLECTOR DESIGN STUDY  

SciTech Connect (OSTI)

A computational evaluation of a particle collector design was performed to evaluate the behavior of aerosol particles in a fast flowing gas stream. The objective of the work was to improve the collection efficiency of the device while maintaining a minimum specified air throughput, nominal collector size, and minimal power requirements. The impact of a range of parameters was considered subject to constraints on gas flow rate, overall collector dimensions, and power limitations. Potential improvements were identified, some of which have already been implemented. Other more complex changes were identified and are described here for further consideration. In addition, fruitful areas for further study are proposed.

Lee, S; Richard Dimenna, R

2007-09-27T23:59:59.000Z

236

Primary zone air proportioner  

DOE Patents [OSTI]

An air proportioner is provided for a liquid hydrocarbon fueled gas turbine of the type which is convertible to oil gas fuel and to coal gas fuel. The turbine includes a shell for enclosing the turbine, an air duct for venting air in said shell to a gasifier, and a fuel injector for injecting gasified fuel into the turbine. The air proportioner comprises a second air duct for venting air from the air duct for mixing with fuel from the gasifier. The air can be directly injected into the gas combustion basket along with the fuel from the injector or premixed with fuel from the gasifier prior to injection by the fuel injector.

Cleary, Edward N. G. (San Diego, CA)

1982-10-12T23:59:59.000Z

237

Gosselin, J.R. and Chen, Q. 2008. "A dual airflow window for indoor air quality improvement and energy conservation in buildings," HVAC&R Research, 14(3), 359-372.  

E-Print Network [OSTI]

Quality Improvement and Energy Conservation in Buildings J.R. Gosselin Q. Chen* Fellow ASHRAE ABSTRACT indoor air quality (Sherman and Matson, 1997). Indoor air quality (IAQ) is important since up to 90

Chen, Qingyan "Yan"

238

Coupled Physical/Chemical and Biofiltration Technologies to Reduce Air Emissions from Forest Products Industries  

SciTech Connect (OSTI)

The research is a laboratory and bench-scale investigation of a system to concentrate and destroy volatile organic compounds (VOCs), including hazardous air pollutants, formed from the drying of wood and the manufacture of wood board products (e.g., particle board and oriented strandboard). The approach that was investigated involved concentrating the dilute VOCs (<500 ppmv) with a physical/chemical adsorption unit, followed by the treatment of the concentrated voc stream (2,000 to 2,500 ppmv) with a biofiltration unit. The research program lasted three years, and involved three research organizations. Michigan Technological University was the primary recipient of the financial assistance, the USDA Forest Products Laboratory (FPL) and Mississippi State University (MSU) were subcontractors to MTU. The ultimate objective of this research was to develop a pilot-scale demonstration of the technology with sufficient data to provide for the design of an industrial system. No commercialization activities were included in this project.

Gary D. McGinnis

2001-12-31T23:59:59.000Z

239

System for particle concentration and detection  

DOE Patents [OSTI]

A new microfluidic system comprising an automated prototype insulator-based dielectrophoresis (iDEP) triggering microfluidic device for pathogen monitoring that can eventually be run outside the laboratory in a real world environment has been used to demonstrate the feasibility of automated trapping and detection of particles. The system broadly comprised an aerosol collector for collecting air-borne particles, an iDEP chip within which to temporarily trap the collected particles and a laser and fluorescence detector with which to induce a fluorescence signal and detect a change in that signal as particles are trapped within the iDEP chip.

Morales, Alfredo M.; Whaley, Josh A.; Zimmerman, Mark D.; Renzi, Ronald F.; Tran, Huu M.; Maurer, Scott M.; Munslow, William D.

2013-03-19T23:59:59.000Z

240

air conditioning technology: Topics by E-print Network  

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

and Thermally Activated Technologies Improve Air Conditioning Researchers at the National Renewable Energy Laboratory (NREL) invented a breakthrough technology moisture from the...

Note: This page contains sample records for the topic "air particles research" 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

air conditioning technologies: Topics by E-print Network  

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

and Thermally Activated Technologies Improve Air Conditioning Researchers at the National Renewable Energy Laboratory (NREL) invented a breakthrough technology moisture from the...

242

Air Cooling Technology for Power Electronic Thermal Control  

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

* FY10 - Develop novel micro-fin air cooled heat sink - prototype and test - Research new novel cooling technologies - synthetic jets - Evaluate fan efficiency for input into...

243

AiR surface: AiR surface 1  

E-Print Network [OSTI]

AiR surface: 1 PDA AiR surface 1 1: AiR surface () () 2 [1] [2] 3 AiR surface AiR surface surface surface surface 3.1 surface [3]( 3 ) surface 3.2 surface surface AiR surface 4 AiR surface surface AiR surface: Virtual Touch Panel

Tanaka, Jiro

244

Optical guiding of absorbing nanoclusters in air  

E-Print Network [OSTI]

Optical guiding of absorbing nanoclusters in air Vladlen G. Shvedov1-3, Anton S. Desyatnikov1124@rsphysse.anu.edu.au Abstract: We suggest a novel approach in all-optical trapping employing number of particles in a dual beam optical trap created by two counter-propagating and co

245

Alternating current long range alpha particle detector  

DOE Patents [OSTI]

An alpha particle detector, utilizing alternating currents, which is capable of detecting alpha particles from distinct sources. The use of alternating currents allows use of simpler ac circuits which, in turn, are not susceptible to dc error components. It also allows the benefit of gas gain, if desired. In the invention, a voltage source creates an electric field between two conductive grids, and between the grids and a conductive enclosure. Air containing air ions created by collision with alpha particles is drawn into the enclosure and detected. In some embodiments, the air flow into the enclosure is interrupted, creating an alternating flow of ions. In another embodiment, a modulated voltage is applied to the grid, also modulating the detection of ions.

MacArthur, D.W.; McAtee, J.L.

1993-02-16T23:59:59.000Z

246

Alpha Particle Diagnostic  

SciTech Connect (OSTI)

The study of burning plasmas is the next frontier in fusion energy research, and will be a major objective of the U.S. fusion program through U.S. collaboration with our international partners on the ITER Project. For DT magnetic fusion to be useful for energy production, it is essential that the energetic alpha particles produced by the fusion reactions be confined long enough to deposit a significant fraction of their initial ~3.5 MeV energy in the plasma before they are lost. Development of diagnostics to study the behavior of energetic confined alpha particles is a very important if not essential part of burning plasma research. Despite the clear need for these measurements, development of diagnostics to study confined the fast confined alphas to date has proven extremely difficult, and the available techniques remain for the most part unproven and with significant uncertainties. Research under this grant had the goal of developing diagnostics of fast confined alphas, primarily based on measurements of the neutron and ion tails resulting from alpha particle knock-on collisions with the plasma deuterium and tritium fuel ions. One of the strengths of this approach is the ability to measure the alphas in the hot plasma core where the interesting ignition physics will occur.

Fisher, Ray, K.

2009-05-13T23:59:59.000Z

247

Method for sampling sub-micron particles  

DOE Patents [OSTI]

Apparatus and method steps for collecting sub-micron sized particles include a collection chamber and cryogenic cooling. The cooling is accomplished by coil tubing carrying nitrogen in liquid form, with the liquid nitrogen changing to the gas phase before exiting from the collection chamber in the tubing. Standard filters are used to filter out particles of diameter greater than or equal to 0.3 microns; however the present invention is used to trap particles of less than 0.3 micron in diameter. A blower draws air to said collection chamber through a filter which filters particles with diameters greater than or equal to 0.3 micron. The air is then cryogenically cooled so that moisture and sub-micron sized particles in the air condense into ice on the coil. The coil is then heated so that the ice melts, and the liquid is then drawn off and passed through a Buchner funnel where the liquid is passed through a Nuclepore membrane. A vacuum draws the liquid through the Nuclepore membrane, with the Nuclepore membrane trapping sub-micron sized particles therein. The Nuclepore membrane is then covered on its top and bottom surfaces with sheets of Mylar.RTM. and the assembly is then crushed into a pellet. This effectively traps the sub-micron sized particles for later analysis.

Gay, Don D. (Aiken, SC); McMillan, William G. (Ulmers, SC)

1985-01-01T23:59:59.000Z

248

Sub-micron particle sampler apparatus  

DOE Patents [OSTI]

Apparatus and method steps for collecting sub-micron sized particles include a collection chamber and cryogenic cooling. The cooling is accomplished by coil tubing carrying nitrogen in liquid form, with the liquid nitrogen changing to the gas phase before exiting from the collection chamber in the tubing. Standard filters are used to filter out particles of diameter greater than or equal to 0.3 microns; however the present invention is used to trap particles of less than 0.3 micron in diameter. A blower draws air to said collection chamber through a filter which filters particles with diameters greater than or equal to 0.3 micron. The air is then cryogenically cooled so that moisture and sub-micron sized particles in the air condense into ice on the coil. The coil is then heated so that the ice melts, and the liquid is then drawn off and passed through a Buchner funnel where the liquid is passed through a Nuclepore membrane. A vacuum draws the liquid through the Nuclepore membrane, with the Nuclepore membrane trapping sub-micron sized particles therein. The Nuclepore membrane is then covered on its top and bottom surfaces with sheets of Mylar.RTM. and the assembly is then crushed into a pellet. This effectively traps the sub-micron sized particles for later analysis.

Gay, Don D. (Aiken, SC); McMillan, William G. (Ulmers, SC)

1987-01-01T23:59:59.000Z

249

Air Pollution Spring 2010  

E-Print Network [OSTI]

ATS 555 Air Pollution Spring 2010 T Th 11:00 ­ 12:15, NESB 101 Instructor: Prof. Sonia Kreidenweis an understanding of types and sources of air pollution. 2. Examine concentrations of air pollutants and their effects on health and welfare. Review regulations governing air pollution. 3. Examine the meteorological

250

Hadronic multiparticle production in extensive air showers and accelerator experiments  

E-Print Network [OSTI]

Using CORSIKA for simulating extensive air showers, we study the relation between the shower characteristics and features of hadronic multiparticle production at low energies. We report about investigations of typical energies and phase space regions of secondary particles which are important for muon production in extensive air showers. Possibilities to measure relevant quantities of hadron production in existing and planned accelerator experiments are discussed.

C. Meurer; J. Bluemer; R. Engel; A. Haungs; M. Roth

2005-06-30T23:59:59.000Z

251

Supporting Air Traffic Flow Management with Agents Shawn R. Wolfe  

E-Print Network [OSTI]

Supporting Air Traffic Flow Management with Agents Shawn R. Wolfe Intelligent Systems Division NASA Ames Research Center Moffett Field, CA 94035-1000 Shawn.R.Wolfe@nasa.gov Abstract Air traffic flow an agent-based system to facilitate mutually beneficial air traffic management decisions, and identify

Yorke-Smith, Neil

252

High-Temperature Air-Cooled Power Electronics Thermal Design (Presentation)  

SciTech Connect (OSTI)

This presentation discusses the status of research at NREL on high temperature air-cooled power electronics thermal design.

Waye, S.

2014-06-01T23:59:59.000Z

253

Single-Duct Constant Air Volume System Supply Air Temperature Reset: Using Return Air Temperature or Outside Air Temperature?  

E-Print Network [OSTI]

The supply air temperature set point for a singleduct constant air volume air handling unit (AHU) system is often reset based on either return air temperature or outside air temperature in order to reduce simultaneous cooling and heating energy...

Wei, G.; Turner, W. D.; Claridge, D.; Liu, M.

2002-01-01T23:59:59.000Z

254

E-Print Network 3.0 - airborne particle generated Sample Search...  

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

is being developed for airborne... consider the issue of convective heat transfer to the ice and water particles moving with the air flow... particles larger than 100 m are...

255

E-Print Network 3.0 - airborne particles generated Sample Search...  

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

is being developed for airborne... consider the issue of convective heat transfer to the ice and water particles moving with the air flow... particles larger than 100 m are...

256

E-Print Network 3.0 - alpha particle spectroscopy Sample Search...  

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

and Isotopes 59 (2003) 363-366 Comparison among alpha-particle energy losses... July 2003 Abstract In the present work, we compare the alpha-particle energy losses in air...

257

E-Print Network 3.0 - alpha particle spectra Sample Search Results  

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

and Isotopes 59 (2003) 363-366 Comparison among alpha-particle energy losses... July 2003 Abstract In the present work, we compare the alpha-particle energy losses in air...

258

Evaluation of Alternate Materials for Coated Particle Fuels for the Gas-Cooled Fast Reactor. Laboratory Directed Research and Development Program FY 2006 Final Report  

SciTech Connect (OSTI)

Candidate ceramic materials were studied to determine their suitability as Gas-Cooled Fast Reactor particle fuel coatings. The ceramics examined in this work were: TiC, TiN, ZrC, ZrN, AlN, and SiC. The studies focused on (i) chemical reactivity of the ceramics with fission products palladium and rhodium, (ii) the thermomechanical stresses that develop in the fuel coatings from a variety of causes during burnup, and (iii) the radiation resiliency of the materials. The chemical reactivity of TiC, TiN, ZrC, and ZrN with Pd and Rh were all found to be much lower than that of SiC. A number of important chemical behaviors were observed at the ceramic-metal interfaces, including the formation of specific intermetallic phases and a variation in reaction rates for the different ceramics investigated. Based on the data collected in this work, the nitride ceramics (TiN and ZrN) exhibit chemical behavior that is characterized by lower reaction rates with Pd and Rh than the carbides TiC and ZrC. The thermomechanical stresses in spherical fuel particle ceramic coatings were modeled using finite element analysis, and included contributions from differential thermal expansion, fission gas pressure, fuel kernel swelling, and thermal creep. In general the tangential stresses in the coatings during full reactor operation are tensile, with ZrC showing the lowest values among TiC, ZrC, and SiC (TiN and ZrN were excluded from the comprehensive calculations due to a lack of available materials data). The work has highlighted the fact that thermal creep plays a critical role in the development of the stress state of the coatings by relaxing many of the stresses at high temperatures. To perform ion irradiations of sample materials, an irradiation beamline and high-temperature sample irradiation stage was constructed at the University of Wisconsin’s 1.7MV Tandem Accelerator Facility. This facility is now capable of irradiating of materials to high dose while controlling sample temperature up to 800şC.

Paul A. Demkowicz; Karen Wright; Jian Gan; David Petti; Todd Allen; Jake Blanchard

2006-09-01T23:59:59.000Z

259

Energy Research and Development Division FINAL PROJECT REPORT  

E-Print Network [OSTI]

supplies, dry cooling systi Energy Research and Development Division FINAL PROJECT REPORT INLET AIR SPRAY COOLINGUse Energy Efficiency · Renewable Energy Technologies · Transportation Inlet Air Spray Cooling

260

Modeling particle deposition on HVAC heat exchangers  

SciTech Connect (OSTI)

Fouling of fin-and-tube heat exchangers by particle deposition leads to diminished effectiveness in supplying ventilation and air conditioning. This paper explores mechanisms that cause particle deposition on heat exchanger surfaces. We present a model that accounts for impaction, diffusion, gravitational settling, and turbulence. Simulation results suggest that some submicron particles deposit in the heat exchanger core, but do not cause significant performance impacts. Particles between 1 and 10 {micro}m deposit with probabilities ranging from 1-20% with fin edge impaction representing the dominant mechanism. Particles larger than 10 {micro}m deposit by impaction on refrigerant tubes, gravitational settling on fin corrugations, and mechanisms associated with turbulent airflow. The model results agree reasonably well with experimental data, but the deposition of larger particles at high velocities is underpredicted. Geometric factors, such as discontinuities in the fins, are hypothesized to be responsible for the discrepancy.

Siegel, J.A.; Nazaroff, W.W.

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air particles research" 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

Battery using a metal particle bed electrode  

DOE Patents [OSTI]

A zinc-air battery in a case including a zinc particle bed supported adjacent the current feeder and diaphragm on a porous support plate which holds the particles but passes electrolyte solution. Electrolyte is recycled through a conduit between the support plate and top of the bed by convective forces created by a density of differential caused by a higher concentration of high density discharge products in the interstices of the bed than in the electrolyte recycle conduit.

Evans, James V. (Piedmont, CA); Savaskan, Gultekin (Albany, CA)

1991-01-01T23:59:59.000Z

262

Battery using a metal particle bed electrode  

DOE Patents [OSTI]

A zinc-air battery in a case is described including a zinc particle bed supported adjacent the current feeder and diaphragm on a porous support plate which holds the particles but passes electrolyte solution. Electrolyte is recycled through a conduit between the support plate and top of the bed by convective forces created by a density of differential caused by a higher concentration of high density discharge products in the interstices of the bed than in the electrolyte recycle conduit. 7 figures.

Evans, J.V.; Savaskan, G.

1991-04-09T23:59:59.000Z

263

Pneumatic cleaning of sugarcane utilizing a high velocity air jet  

E-Print Network [OSTI]

- oped to cope with the increased amount of trash present in unburned sugarcane. This research involved the testing and computer simulation of a chopper air jet nozzle assembly. The experimental test setup included a two-stage conveyor. This conveyor... of the system was evaluated. The results of the chopper air jet nozzle assembly tests verified that the air velocity, nozzle size, chopper blade configuration and feed-in rate contributed signifi- cantly to the cleanliness of the billets. The air velo- city...

Fisher, John Ray

2012-06-07T23:59:59.000Z

264

Automatic Continuous Commissioning of Measurement Instruments in Air Handling Units  

E-Print Network [OSTI]

by International Energy Agency (IEA) and widely studied in the research projects of Annex 40[2] and Annex 47[3]. An open publication [4] found a media payback period of 4.8 years for commissioning of new buildings in United States. Additionally, commissioning... w Chilled water fanr Return air fan val Valve rtn Return air exh Exhaust air fans Supply air fan coil Cooling coil REFERENCES [1] Buildings Rese Lawrence Be [2] IEA ECBCS...

Xiao, F.; Wang, S.

2006-01-01T23:59:59.000Z

265

E-Print Network 3.0 - air espectrometria gama Sample Search Results  

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

18, P.O. Box 100, N... Institute for Coastal Research, GKSS Research Centre Geesthacht, D-21502 Geesthacht, Germany f Air Quality Source: Dommergue, Aurlien -...

266

E-Print Network 3.0 - air quality trends Sample Search Results  

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

Engineering Current Research Projects Summary: , to quantify the effect of transboundary pollution on air quality. Ozone trends and interannual variability... Research's Community...

267

E-Print Network 3.0 - air quality quantified Sample Search Results  

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

Engineering Current Research Projects Summary: , to quantify the effect of transboundary pollution on air quality. Ozone trends and interannual variability... Research's Community...

268

Particle Astrophysics  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 - September 2006 TheSteven Ashby Dr.presentationsParticipant ObligationsParticle

269

Air Conditioning | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels DataCombinedDepartment2015Services » Advanced ResearchBusinessAConditioning Air

270

Suction-recirculation device for stabilizing particle flows within a solar powered solid particle receiver  

DOE Patents [OSTI]

A suction-recirculation device for stabilizing the flow of a curtain of blackened heat absorption particles falling inside of a solar receiver with an open aperture. The curtain of particles absorbs the concentrated heat from a solar mirror array reflected up to the receiver on a solar power tower. External winds entering the receiver at an oblique angle can destabilize the particle curtain and eject particles. A fan and ductwork is located behind the back wall of the receiver and sucks air out through an array of small holes in the back wall. Any entrained particles are separated out by a conventional cyclone device. Then, the air is recirculated back to the top of the receiver by injecting the recycled air through an array of small holes in the receiver's ceiling and upper aperture front wall. Since internal air is recirculated, heat losses are minimized and high receiver efficiency is maintained. Suction-recirculation velocities in the range of 1-5 m/s are sufficient to stabilize the particle curtain against external wind speeds in excess of 10 m/s.

Kolb, Gregory J. (Albuquerque, NM)

2012-02-07T23:59:59.000Z

271

Comparison of the Coulter Multisizer and Aerodynamic Particle Sizer for obtaining the aerodynamic particle size of irregularly shaped dust  

E-Print Network [OSTI]

When studying air quality it is often necessary to measure the aerodynamic size distribution of particles. True aerodynamic diameter must be measured using a gravitational settling method, which is impractical. Other methods exist that use other...

McClure, Joshua Wayne

2002-01-01T23:59:59.000Z

272

Research on thermophoretic and inertial aspects of ash particle deposition on heat exchanger surfaces in coal-fired equipment. Final technical report, September 1, 1986--April 30, 1990  

SciTech Connect (OSTI)

The overall goal of this research in the area of ash transport was to advance the capability of making reliable engineering predictions of the dynamics and consequences of net deposit growth for surfaces exposed to the products of coal combustion. To accomplish this for a wide variety of combustor types, coal types, and operating conditions, this capability must be based on a quantitative understanding of each of the important mechanisms of mineral matter transport, as well as the nature of the interactions between these substances and the prevailing ``fireside`` surface of the deposit. This level of understanding and predictive capability could ultimately be translated into very significant cost reductions for coal-fired equipment design, development and operation.

Rosner, D.E.

1990-05-01T23:59:59.000Z

273

NISTIR 7532 X-ray Microtomography Studies of Air-Void  

E-Print Network [OSTI]

-thickener (to form a polymer network to prevent particle movement). Conversely, the addition of an air entrainerNISTIR 7532 X-ray Microtomography Studies of Air-Void Instability and Growth during Drying of Tile-Jochen Haecker #12;NISTIR 7532 X-ray Microtomography Studies of Air-Void Instability and Growth during Drying

Bentz, Dale P.

274

Aesculap, Inc. Air Products  

E-Print Network [OSTI]

Aesculap, Inc. Air Products Air Products Foundation Alaric Compliance Services, LLC Alvin H. Butz & Herger, Inc. Sodexo Campus Services Sodexo Inc. and Affiliates Stupp Bros., Inc. Sugarbush Products, Inc

Napier, Terrence

275

General Air Permits (Louisiana)  

Broader source: Energy.gov [DOE]

Any source, including a temporary source, which emits or has the potential to emit any air contaminant requires an air permit. Facilities with potential emissions less than 5 tons per year of any...

276

Healthy Air Act (Maryland)  

Broader source: Energy.gov [DOE]

The Maryland Healthy Air Act was developed with the purpose of bringing Maryland into attainment with the National Ambient Air Quality Standards (NAAQS) for ozone and fine particulate matter by the...

277

Air Products Research Alliance University of California,  

E-Print Network [OSTI]

Energy Materials Lithium battery electrolyte salts Functional Coatings Nanoparticle Dispersions Electronic Materials Conductive Polymer Hole Injection Layer Lithium battery electrolytes Aqueous, Solvent&D in lieu of in-house R&D Utilizes R&D partners to accelerate commercialization University alliance approach

California at Santa Barbara, University of

278

on man, nature & air pollution  

E-Print Network [OSTI]

on man, nature & air pollution About three decades ago, itand episodes of air pollution the following summer. Wetthe increase in air pollution. This hypothesis generated

Finlayson-Pitts, Barbara J

2008-01-01T23:59:59.000Z

279

Experimental Particle Physics  

SciTech Connect (OSTI)

The high energy physics group at the University of South Carolina, under the leadership of Profs. S.R. Mishra, R. Petti, M.V. Purohit, J.R. Wilson (co-PI's), and C. Rosenfeld (PI), engaged in studies in "Experimental Particle Physics." The group collaborated with similar groups at other universities and at national laboratories to conduct experimental studies of elementary particle properties. We utilized the particle accelerators at the Fermi National Accelerator Laboratory (Fermilab) in Illinois, the Stanford Linear Accelerator Center (SLAC) in California, and the European Center for Nuclear Research (CERN) in Switzerland. Mishra, Rosenfeld, and Petti worked predominantly on neutrino experiments. Experiments conducted in the last fifteen years that used cosmic rays and the core of the sun as a source of neutrinos showed conclusively that, contrary to the former conventional wisdom, the "flavor" of a neutrino is not immutable. A neutrino of flavor "e," "mu," or "tau," as determined from its provenance, may swap its identity with one of the other flavors -- in our jargon, they "oscillate." The oscillation phenomenon is extraordinarily difficult to study because neutrino interactions with our instruments are exceedingly rare -- they travel through the earth mostly unimpeded -- and because they must travel great distances before a substantial proportion have made the identity swap. Three of the experiments that we worked on, MINOS, NOvA, and LBNE utilize a beam of neutrinos from an accelerator at Fermilab to determine the parameters governing the oscillation. Two other experiments that we worked on, NOMAD and MIPP, provide measurements supportive of the oscillation experiments. Good measurements of the neutrino oscillation parameters may constitute a "low energy window" on related phenomena that are otherwise unobservable because they would occur only at energies way above the reach of conceivable accelerators. Purohit and Wilson participated in the BaBar experiment, which collected data at SLAC until 2008. They continued to analyze the voluminous BaBar data with an emphasis on precision tests of Quantum Chromodynamics and on properties of the "eta_B," a bottom quark paired in a meson with a strange quark. The ATLAS experiment became the principal research focus for Purohit. One of the world's largest pieces of scientific equipment, ATLAS observes particle collisions at the highest-energy particle accelerator ever built, the Large Hadron Collider (LHC) at CERN. Our efforts on ATLAS included participation in the commissioning, calibration, and installation of components called "CSCs". The unprecedented energy of 14 TeV enabled the ATLAS and CMS collaborations to declare discovery of the famous Higgs particle in 2012.

Rosenfeld, Carl [Univ of South Carolina] (ORCID:0000000338571223); Mishra, Sanjib R. [Univ of South Carolina; Petti, Roberto [Univ of South Carolina; Purohit, Milind V. [Univ of South Carolina

2014-08-31T23:59:59.000Z

280

Muon Bremsstrahlung and Muonic Pair Production in Air Showers  

E-Print Network [OSTI]

The objective of this work is to report on the modifications in air shower development due to muon bremsstrahlung and muonic pair production. In order to do that we have implemented new muon bremsstrahlung and muonic pair production procedures in the AIRES air shower simulation system, and have used it to simulate ultra high energy showers in different conditions. The influence of the mentioned processes in the global development of the air shower is important for primary particles of large zenith angles, while they do not introduce significant changes in the position of the shower maximum.

A. Cillis; S. J. Sciutto

2000-06-08T23:59:59.000Z

Note: This page contains sample records for the topic "air particles research" 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

Air Products effective way  

E-Print Network [OSTI]

PE O A e s a b O T A O ENNST Overview Air Products effective way standard me Departm Shipping has recently y of shipping eans. Air Pro ontainer that es of this pro onduct mark eep accelera eep the cost tilize widely a earch and m m visited Air er needs wer model was cr m approache ms

Demirel, Melik C.

282

Air Quality Chapter Outline  

E-Print Network [OSTI]

Chapter 30 Air Quality Chapter Outline 1 Overview 2 1.1 Hazards / Impacts 2 1.2 Exposure Sources 3 Manual Chapter 30: Air Quality 7 References 20 8 Implementation 21 9 Ownership 22 1 Overview SLAC operations produce a wide range of air emissions. Sources of emissions include standard equipment

Wechsler, Risa H.

283

MAD-AIR  

E-Print Network [OSTI]

with stress- related illness rather than the anwr that spells RELIEF. Air flow in, through ad arourd a house is an important concern in the building we call haw. !lb enhance air flow and change the various corditions or properties of the air, a variety...

Tooley, J. J.; Moyer, N. A.

1989-01-01T23:59:59.000Z

284

Sub-micron particle sampler apparatus and method for sampling sub-micron particles  

DOE Patents [OSTI]

Apparatus and method steps for collecting sub-micron sized particles include a collection chamber and cryogenic cooling. The cooling is accomplished by coil tubing carrying nitrogen in liquid form, with the liquid nitrogen changing to the gas phase before exiting from the collection chamber in the tubing. Standard filters are used to filter out particles of diameter greater than or equal to 0.3 microns; however, the present invention is used to trap particles of less than 0.3 micron in diameter. A blower draws air to said collection chamber through a filter which filters particles with diameters greater than or equal to 0.3 micron. The air is then cryogenically cooled so that moisture and sub-micron sized particles in the air condense into ice on the coil. The coil is then heated so that the ice melts, and the liquid is then drawn off and passed through a Buchner funnel where the liquid is passed through a Nuclepore membrane. A vacuum draws the liquid through the Nuclepore membrane, with the Nuclepore membrane trapping sub-micron sized particles therein. The Nuclepore membrane is then covered on its top and bottom surfaces with sheets of Mylar and the assembly is then crushed into a pellet. This effectively traps the sub-micron sized particles for later analysis. 6 figures.

Gay, D.D.; McMillan, W.G.

1984-04-12T23:59:59.000Z

285

Air Handling Unit Supply Air Temperature Optimization During Economizer Cycles  

E-Print Network [OSTI]

temperature at supply air temperature setpoint. Mechanical cooling is always required when outside air temperature is higher than the supply air temperature setpoint. Generally the supply air temperature setpoint is set at 55°F for space humidity control...

Xu, K.; Liu, M.; Wang, G.; Wang, Z.

2007-01-01T23:59:59.000Z

286

Air Conditioner Compressor Performance Model  

SciTech Connect (OSTI)

During the past three years, the Western Electricity Coordinating Council (WECC) Load Modeling Task Force (LMTF) has led the effort to develop the new modeling approach. As part of this effort, the Bonneville Power Administration (BPA), Southern California Edison (SCE), and Electric Power Research Institute (EPRI) Solutions tested 27 residential air-conditioning units to assess their response to delayed voltage recovery transients. After completing these tests, different modeling approaches were proposed, among them a performance modeling approach that proved to be one of the three favored for its simplicity and ability to recreate different SVR events satisfactorily. Funded by the California Energy Commission (CEC) under its load modeling project, researchers at Pacific Northwest National Laboratory (PNNL) led the follow-on task to analyze the motor testing data to derive the parameters needed to develop a performance models for the single-phase air-conditioning (SPAC) unit. To derive the performance model, PNNL researchers first used the motor voltage and frequency ramping test data to obtain the real (P) and reactive (Q) power versus voltage (V) and frequency (f) curves. Then, curve fitting was used to develop the P-V, Q-V, P-f, and Q-f relationships for motor running and stalling states. The resulting performance model ignores the dynamic response of the air-conditioning motor. Because the inertia of the air-conditioning motor is very small (H<0.05), the motor reaches from one steady state to another in a few cycles. So, the performance model is a fair representation of the motor behaviors in both running and stalling states.

Lu, Ning; Xie, YuLong; Huang, Zhenyu

2008-09-05T23:59:59.000Z

287

Air to Air Communication Protocol Arjan Durresi1  

E-Print Network [OSTI]

1 Air to Air Communication Protocol Arjan Durresi1 , Vamsi Paruchuri1 , Leonard Barolli2 and Raj. Louis, MO 63130, USA 314-935-4963, jain@cse.wustl.edu Abstract--We present Air to Air Communication (AAC........................................................2 3. AIR TO AIR COMMUNICATION..............................3 4. SIMULATIONS

Jain, Raj

288

GASOLINE VEHICLE EXHAUST PARTICLE SAMPLING STUDY  

SciTech Connect (OSTI)

The University of Minnesota collaborated with the Paul Scherrer Institute, the University of Wisconsin (UWI) and Ricardo, Inc to physically and chemically characterize the exhaust plume from recruited gasoline spark ignition (SI) vehicles. The project objectives were: (1) Measure representative particle size distributions from a set of on-road SI vehicles and compare these data to similar data collected on a small subset of light-duty gasoline vehicles tested on a chassis dynamometer with a dilution tunnel using the Unified Drive Cycle, at both room temperature (cold start) and 0 C (cold-cold start). (2) Compare data collected from SI vehicles to similar data collected from Diesel engines during the Coordinating Research Council E-43 project. (3) Characterize on-road aerosol during mixed midweek traffic and Sunday midday periods and determine fleet-specific emission rates. (4) Characterize bulk- and size-segregated chemical composition of the particulate matter (PM) emitted in the exhaust from the gasoline vehicles. Particle number concentrations and size distributions are strongly influenced by dilution and sampling conditions. Laboratory methods were evaluated to dilute SI exhaust in a way that would produce size distributions that were similar to those measured during laboratory experiments. Size fractionated samples were collected for chemical analysis using a nano-microorifice uniform deposit impactor (nano-MOUDI). In addition, bulk samples were collected and analyzed. A mixture of low, mid and high mileage vehicles were recruited for testing during the study. Under steady highway cruise conditions a significant particle signature above background was not measured, but during hard accelerations number size distributions for the test fleet were similar to modern heavy-duty Diesel vehicles. Number emissions were much higher at high speed and during cold-cold starts. Fuel specific number emissions range from 1012 to 3 x 1016 particles/kg fuel. A simple relationship between number and mass emissions was not observed. Data were collected on-road to compare weekday with weekend air quality around the Twin Cities area. This portion of the study resulted in the development of a method to apportion the Diesel and SI contribution to on-road aerosol.

Kittelson, D; Watts, W; Johnson, J; Zarling, D Schauer,J Kasper, K; Baltensperger, U; Burtscher, H

2003-08-24T23:59:59.000Z

289

Page 2 of 4 TREE Cookies Etc. Trees & Air-continued  

E-Print Network [OSTI]

#12;Page 2 of 4 TREE Cookies Etc. Trees & Air- continued pollutants include ozone, sulfur dioxide of trees on air pollution. The research on trees and air pollution is rather new and still ongoing, nitrogen dioxide, and carbon monoxide. These are taken out of the air by trees primarily through leaf

Liskiewicz, Maciej

290

ORIGINAL ARTICLE Ambient Air Pollution  

E-Print Network [OSTI]

ORIGINAL ARTICLE Ambient Air Pollution and Cardiovascular Emergency Department Visits Kristi Busico ambient air pollutants and cardiovascular disease (CVD), the roles of the physicochemical components the relation between ambient air pollution and cardiovascular conditions using ambient air quality data

Mulholland, James A.

291

of the filter were measured using condensation particle counters (TSI Inc. model 3022A). Submicrometer particles entering the counters are  

E-Print Network [OSTI]

Standard for High Efficiency Air Filters (HEPA and ULPA), Beuth Verlag GmbH, Berlin, Germany 1995. [11] Tof the filter were measured using condensation particle counters (TSI Inc. model 3022A). Submicrometer particles entering the counters are grown into micrometer sized droplets by condensation

Gruner, George

292

Operation technology of air treatment system in nuclear facilities  

E-Print Network [OSTI]

Effective operation techniques were reviewed on the air treatment system to protect the personnel in nuclear facilities from the contamination of radio-active particles and to keep the environment clear. Nuclear air treatment system consisted of the ventilation and filtering system was characterized by some test. Measurement of air velocity of blowing/exhaust fan in the ventilation system, leak tests of HEPA filters in the filtering, and measurement of pressure difference between the areas defined by radiation level were conducted. The results acquired form the measurements were reflected directly for the operation of air treatment. In the abnormal state of virus parts of devices composted of the system, the repairing method, maintenance and performance test were also employed in operating effectively the air treatment system. These measuring results and techniques can be available to the operation of air treatment system of PIEF as well as the other nuclear facilities in KAERI.

Chun, Y B; Hwong, Y H; Lee, H K; Min, D K; Park, K J; Uom, S H; Yang, S Y

2001-01-01T23:59:59.000Z

293

Electrically recharged battery employing a packed/spouted bed metal particle electrode  

DOE Patents [OSTI]

A secondary metal air cell, employing a spouted/packed metal particle bed and an air electrode, is described. More specifically a zinc air cell well suited for use in electric vehicles which is capable of being either electrically or hydraulically recharged. 5 figs.

Siu, S.C.; Evans, J.W.; Salas-Morales, J.

1995-08-15T23:59:59.000Z

294

Approved Module Information for CE3013, 2014/5 Module Title/Name: Particle Processing Module Code: CE3013  

E-Print Network [OSTI]

of measuring particle size and interpreting the results. Removal of particles from air streams ? cyclone design, other methods such as gravity and inertial separators, fabric filters and electrostatic precipitators

Neirotti, Juan Pablo

295

Blodgett Forest Research Station  

E-Print Network [OSTI]

kilometres away. Then, as the sun reaches its peak in the sky, pollution from California's Central Valley a crucial part in the chemistry of aerosol particles and with pollutants such as ozone. His discoveries may help to fill in con- founding gaps in atmospheric science, such as how VOCs from plants affect air

Wildermuth, Mary C

296

Particle size distribution of indoor aerosol sources  

SciTech Connect (OSTI)

As concern about Indoor Air Quality (IAQ) has grown in recent years, it has become necessary to determine the nature of particles produced by different indoor aerosol sources and the typical concentration that these sources tend to produce. These data are important in predicting the dose of particles to people exposed to these sources and it will also enable us to take effective mitigation procedures. Further, it will also help in designing appropriate air cleaners. A new state of the art technique, DMPS (Differential Mobility Particle Sizer) System is used to determine the particle size distributions of a number of sources. This system employs the electrical mobility characteristics of these particles and is very effective in the 0.01--1.0 {mu}m size range. A modified system that can measure particle sizes in the lower size range down to 3 nm was also used. Experimental results for various aerosol sources is presented in the ensuing chapters. 37 refs., 20 figs., 2 tabs.

Shah, K.B.

1990-10-24T23:59:59.000Z

297

Air quality in the Carlsbad cavern  

SciTech Connect (OSTI)

The air quality in the Carlsbad Cavern has been investigated, but there are no reports on radon progeny and aerosols. The purpose of this experiment was to determine the activity size distribution of radon progeny and the air exchange rate inside the Cavern. Teams from ITRI and New Mexico Institute of Mining and Technology (NMT) conducted the field study in July 1994. The ITRI graded diffusion battery (GDB) was used to determine the activity size distribution, progeny concentration, equilibrium factor, and unattached fraction of the radon progeny. The design, calibration, and performance of the GDB have been described. For this study, each stage of the GDB contained one stainless steel screen, with the mesh sizes arranged in a series of 30, 50, 145, 200, and 635 mesh from the air inlet to the outlet. A 47-nm type A/E glass fiber filter was used to collect all particles that penetrated the screens. The flow rate was 5 L/min. The average ventilation rate in the cavern is 0.0026 V/hr. Our results showed that the cavern atmosphere may be quite different from other underground environments. The atmosphere in the summer is stable and relatively free of airborne particles, partly due to the extremely slow air exchange rate.

Cheng, Yung-Seng; Chen, Tou-Rong [Tsing-Hua Univ. (Taiwan, Province of China); Wasiolek, P.T. [New Mexico Institute of Mining and Technology, Socorro, NM (United States)

1994-11-01T23:59:59.000Z

298

Personal continuous air monitor  

DOE Patents [OSTI]

A personal continuous air monitor capable of giving immediate warning of the presence of radioactivity has a filter/detector head to be worn in the breathing zone of a user, containing a filter mounted adjacent to radiation detectors, and a preamplifier. The filter/detector head is connected to a belt pack to be worn at the waist or on the back of a user. The belt pack contains a signal processor, batteries, a multichannel analyzer, a logic circuit, and an alarm. An air pump also is provided in the belt pack for pulling air through the filter/detector head by way of an air tube.

Morgan, Ronald G. (Los Alamos, NM); Salazar, Samuel A. (Albuquerque, NM)

2000-01-01T23:59:59.000Z

299

Environmental Quality: Air (Louisiana)  

Broader source: Energy.gov [DOE]

The Department of Environmental Quality regulates air quality in Louisiana. The Department has an established a fee system for funding the monitoring, investigation and other activities required...

300

Co-operation Agreement between the European Organization for Nuclear Research and the Department of Energy of the United States of America and the National Science Foundation of the United States of America concerning Scientific and Technical Co-operation in Nuclear and Particle Physics  

E-Print Network [OSTI]

Co-operation Agreement between the European Organization for Nuclear Research and the Department of Energy of the United States of America and the National Science Foundation of the United States of America concerning Scientific and Technical Co-operation in Nuclear and Particle Physics

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air particles research" 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

National Environmental Research Institute Ministry of the Environment . Denmark  

E-Print Network [OSTI]

National Environmental Research Institute Ministry of the Environment . Denmark Air Quality Research Institute Ministry of the Environment Air Quality Monitoring Programme Annual Summary for 2004 Berkowicz and Jřrgen Brandt Department: Department of Atmospheric Environment Serial title and no.: NERI

302

National Environmental Research Institute Ministry of the Environment . Denmark  

E-Print Network [OSTI]

National Environmental Research Institute Ministry of the Environment . Denmark Air Quality Research Institute Ministry of the Environment Air Quality Monitoring Programme Annual Summary for 2003: Department of Atmospheric Environment Serial title and no.: NERI Technical Report No. 497 Publisher: National

303

Air cooling for Vertex Detectors  

E-Print Network [OSTI]

The vertex detectors are crucial detectors for future linear e+e- colliders since they must give the most accurate location of any outgoing charged particles originating from the interaction point. The DEPFET collaboration is developing a new type of pixel sensors which provide very low noise and high spatial resolution. In order to precisely determine the track and vertex positions, multiple scattering in the detector has to be reduced by minimizing the material in the sensors, cooling, and support structures. A new method of cooling by blowing air over the sensors has been developed and tested. It is applied in the design and construction of the Belle-II detector and may be used in the new generation of vertex detectors for linear colliders.

Arantza Oyanguren

2012-02-28T23:59:59.000Z

304

Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron  

E-Print Network [OSTI]

Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron A Research Centre/m) Accelerator Research DESY DESY is one of the world's leading research centres for photon science, particle with universities. The DESY focus is on conventional and plasma-based accele- rators with applications in photon

305

Iron-air battery development program  

SciTech Connect (OSTI)

The progress and status of the research and development program on the iron-air advanced technology battery system at the Westinghouse Electric Corporation during the period June 1978-December 1979 are described. This advanced battery system is being developed for electric vehicle propulsion applications. Testing and evaluation of 100 cm/sup 2/ size cells was undertaken while individual iron and air electrode programs continued. Progress is reported in a number of these study areas. Results of the improvements made in the utilization of the iron electrode active material coupled with manufacturing and processing studies related to improved air electrodes continue to indicate that a fully developed iron-air battery system will be capable of fulfilling the performance requirements for commuter electric vehicles.

Buzzelli, E.S.; Liu, C.T.; Bryant, W.A.

1980-05-01T23:59:59.000Z

306

Growth and poverty in the urban fringe : decentralization, dispersion, and inequality in greater Buenos Aires  

E-Print Network [OSTI]

This research presents the case of growth in Buenos Aires since the late 1970s, when the decentralization of urban planning powers in the Province of Buenos Aires began, until 2001, when an economic crisis submerged -even ...

Libertun de Duren, Nora R

2007-01-01T23:59:59.000Z

307

ESTIMATION OF THE TEMPERATURE OF STARCH PARTICLES-AIR FLAMES  

E-Print Network [OSTI]

d'Energetique etde Ditonique, U.RA. 193 CNRS E.N.S.M.A., Poitiers. France & C.Proust I and original experimental results on this problem. Experimental Method Experimental setup The method used

Paris-Sud XI, Université de

308

International MODIS and AIRS processing package: AIRS products and applications  

E-Print Network [OSTI]

International MODIS and AIRS processing package: AIRS products and applications Elisabeth Weisz presented and discussed in this paper demonstrate that the IMAPP AIRS retrieval product is rigorously parameters from the operational AIRS L2 product and data from other instruments. Keywords: AIRS, IMAPP

Li, Jun

309

AIR SEALING Seal air leaks and save energy!  

E-Print Network [OSTI]

AIR SEALING Seal air leaks and save energy! W H A T I S A I R L E A K A G E ? Ventilation is fresh air that enters a house in a controlled manner to exhaust excess moisture and reduce odors and stuffiness. Air leakage, or infiltration, is outside air that enters a house uncontrollably through cracks

Oak Ridge National Laboratory

310

Dynamics of Carroll Particles  

E-Print Network [OSTI]

We investigate particles whose dynamics is invariant under the Carroll group. Although a single free such Carroll particle has no non-trivial dynamics (`the Carroll particle does not move') we show that there exists non-trivial dynamics for a set of interacting Carroll particles. Furthermore, we gauge the Carroll algebra and couple the Carroll particle to these gauge fields. It turns out that for such a coupled system even a single Carroll particle can have non-trivial dynamics.

Eric Bergshoeff; Joaquim Gomis; Giorgio Longhi

2014-05-31T23:59:59.000Z

311

Ultrahigh sensitivity heavy noble gas detectors for long-term monitoring and for monitoring air. Technical status report  

SciTech Connect (OSTI)

The primary objective of this research project is to develop heavy noble gas (krypton, xenon, and radon) detectors for (1) long-term monitoring of transuranic waste, spent fuel, and other uranium and thorium bearing wastes and (2) alpha particle air monitors that discriminate between radon emissions and other alpha emitters. A University of Cincinnati/Argonne National Laboratory (UC/ANL) Team was assembled to complete this detector development project. DOE needs that are addressed by this project include improved long-term monitoring capability and improved air monitoring capability during remedial activities. Successful development and implementation of the proposed detection systems could significantly improve current capabilities with relatively simple and inexpensive equipment.

Valentine, J.D.

1999-01-31T23:59:59.000Z

312

Removal of testa from food grade copra by air classification  

E-Print Network [OSTI]

preparation of rv food grade copra. Carver and screw prepressing were used to remove some of the oil from the copra. The prepressed cakes were flaked and extracted wi. th hexane by two different methods of extraction, small batch extraction and filtration... column extrac- tion. The meal after air desolventization was dried and milled in an Alpine Kolloplex Impact Study Mill 160Z. The testa particles were separated from the coconut flour by means of air classifica- tion and sieving. To optimize...

Lopitakwong, Rommanee

1975-01-01T23:59:59.000Z

313

Recirculation of Factory Heat and Air to Reduce Energy Consumption  

E-Print Network [OSTI]

-makeup ventilation systems. First we must distinguish between gaseous and particulate contaminants in order to select appropriate types of air cleaning equipment. Next the physical (and chemical) char acteristics of those specific contaminants must be considered... particles. (Note that most gases and vapors are colorless and invisible ?...suspended particulates are almost the only visible air con taminants .) Because the chemical vapor pressure of the nuisance contaminants which create visibly polluted factory...

Thiel, G. R.

1983-01-01T23:59:59.000Z

314

MATERIALS AND MOLECULAR RESEARCH DIVISION ANNUAL REPORT 1979  

E-Print Network [OSTI]

More than a decade of hydrogen-air fuel cell research andand Hydrogen Utilization in an Acid Fuel Cell," Electrochem.

Authors, Various

2013-01-01T23:59:59.000Z

315

MATERIALS AND MOLECULAR RESEARCH DIVISION. ANNUAL REPORT 1978  

E-Print Network [OSTI]

hydrogen-air fuel cell research and development has led to the general conclusion that the most cost-

Authors, Various

2011-01-01T23:59:59.000Z

316

MATERIALS AND MOLECULAR RESEARCH DIVISION ANNUAL REPORT 1979  

E-Print Network [OSTI]

hydrogen-air fuel cell research and development has led to the general conclusion that the most cost-

Authors, Various

2013-01-01T23:59:59.000Z

317

Particle Physics Booklet 2008  

E-Print Network [OSTI]

212 25. Accelerator physics of colliders ? 26. High-energythe full Review. PARTICLE PHYSICS BOOKLET TABLE OF CONTENTSrev. ) Summary Tables of Particle Physics Gauge and Higgs

et al., C. Amsler

2008-01-01T23:59:59.000Z

318

Solutions for Summer Electric Power Shortages: Demand Response and its Applications in Air Conditioning and Refrigerating Systems  

E-Print Network [OSTI]

Research Director, PIER Demand Response Research CenterAssessment of Demand Response & Advanced Metering, staffPower Shortages: Demand Response and its Applications in Air

Han, Junqiao; Piette, Mary Ann

2008-01-01T23:59:59.000Z

319

Recirculating electric air filter  

DOE Patents [OSTI]

An electric air filter cartridge has a cylindrical inner high voltage electrode, a layer of filter material, and an outer ground electrode formed of a plurality of segments moveably connected together. The outer electrode can be easily opened to remove or insert filter material. Air flows through the two electrodes and the filter material and is exhausted from the center of the inner electrode.

Bergman, W.

1985-01-09T23:59:59.000Z

320

Portable oven air circulator  

DOE Patents [OSTI]

A portable air circulating apparatus for use in cooking ovens which is used to create air currents in the oven which transfer heat to cooking foodstuffs to promote more rapid and more uniform cooking or baking, the apparatus including a motor, fan blade and housing of metallic materials selected from a class of heat resistant materials.

Jorgensen, Jorgen A. (Bloomington, MN); Nygren, Donald W. (Minneapolis, MN)

1983-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air particles research" 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

Compressed Air System Optimization  

E-Print Network [OSTI]

Several years ago I went to a gas station and noticed that my car's tires were low on air. I saw the gas station had an air compressor, but it cost a quarter to use the compressor. I paid my quarter and used the compressor. I realized...

Aegerter, R.

322

Ventilation System Effectiveness and Tested Indoor Air Quality Impacts  

SciTech Connect (OSTI)

Ventilation system effectiveness testing was conducted at two unoccupied, single-family, detached lab homes at the University of Texas - Tyler. Five ventilation system tests were conducted with various whole-building ventilation systems. Multizone fan pressurization testing characterized building and zone enclosure leakage. PFT testing showed multizone air change rates and interzonal airflow. Cumulative particle counts for six particle sizes, and formaldehyde and other Top 20 VOC concentrations were measured in multiple zones. The testing showed that single-point exhaust ventilation was inferior as a whole-house ventilation strategy. It was inferior because the source of outside air was not direct from outside, the ventilation air was not distributed, and no provision existed for air filtration. Indoor air recirculation by a central air distribution system can help improve the exhaust ventilation system by way of air mixing and filtration. In contrast, the supply and balanced ventilation systems showed that there is a significant benefit to drawing outside air from a known outside location, and filtering and distributing that air. Compared to the Exhaust systems, the CFIS and ERV systems showed better ventilation air distribution and lower concentrations of particulates, formaldehyde and other VOCs. System improvement percentages were estimated based on four System Factor Categories: Balance, Distribution, Outside Air Source, and Recirculation Filtration. Recommended System Factors could be applied to reduce ventilation fan airflow rates relative to ASHRAE Standard 62.2 to save energy and reduce moisture control risk in humid climates. HVAC energy savings were predicted to be 8-10%, or $50-$75/year.

Rudd, A.; Bergey, D.

2014-02-01T23:59:59.000Z

323

Hadron Production at Fixed Target Energies and Extensive Air Showers  

E-Print Network [OSTI]

NA61/SHINE is a fixed-target experiment to study hadron production in hadron-nucleus and nucleus-nucleus collisions at the CERN SPS. Due to the very good acceptance and particle identification in forward direction, NA61/SHINE is well suited for measuring particle production to improve the reliability of air shower simulations. Data with proton and pion beams have been taken in 2007 and 2009. First analysis results for the pion yield in proton-carbon interactions at 31 GeV will be shown and compared to predictions from models used in air shower simulations.

M. Unger; for the NA61/SHINE Collaboration

2010-12-12T23:59:59.000Z

324

Particle Physics and America's Future | Department of Energy  

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

that 500 billion worth of products are processed, treated, or inspected by particle beams each year. The federal government invests in basic research largely because of the...

325

Hot Particle and Turbulent Transport Effects on Resistive Instabilities  

SciTech Connect (OSTI)

This research project included two main thrusts; energetic particle effects on resistive MHD modes in tokamaks, and turbulence interactions with tearing modes in simplified geometry.

Brennan, Dylan P.

2012-10-16T23:59:59.000Z

326

Biodiesel Effects on Diesel Particle Filter Performance: Milestone Report  

SciTech Connect (OSTI)

Research results on the performance of biodiesel and biodiesel blends with ultra-low sulfur diesel (ULSD) and a diesel particle filter (DPF).

Williams, A.; McCormick, R. L.; Hayes, R.; Ireland, J.

2006-03-01T23:59:59.000Z

327

Air pollutants effects on forest ecosystems  

SciTech Connect (OSTI)

This book presents the papers given at a conference on the effects of acid rain on forests. The conference was sponsored by the National Acid Precipitation Assessment Program (NAPAP). Topics considered at the conference included the status of US research on acid deposition and its effects contributing factors to the decline of forests, evidence for effects on ecosystems, the effects of air pollutants on forest ecosystems in North America and Europe, forest management, and future scientific research programs and management approaches.

Not Available

1985-01-01T23:59:59.000Z

328

ENVIRONMENTAL SAMPLING USING LOCATION SPECIFIC AIR MONITORING IN BULK HANDLING FACILITIES  

SciTech Connect (OSTI)

Since the introduction of safeguards strengthening measures approved by the International Atomic Energy Agency (IAEA) Board of Governors (1992-1997), international nuclear safeguards inspectors have been able to utilize environmental sampling (ES) (e.g. deposited particulates, air, water, vegetation, sediments, soil and biota) in their safeguarding approaches at bulk uranium/plutonium handling facilities. Enhancements of environmental sampling techniques used by the IAEA in drawing conclusions concerning the absence of undeclared nuclear materials or activities will soon be able to take advantage of a recent step change improvement in the gathering and analysis of air samples at these facilities. Location specific air monitoring feasibility tests have been performed with excellent results in determining attribute and isotopic composition of chemical elements present in an actual test-bed sample. Isotopic analysis of collected particles from an Aerosol Contaminant Extractor (ACE) collection, was performed with the standard bulk sampling protocol used throughout the IAEA network of analytical laboratories (NWAL). The results yielded bulk isotopic values expected for the operations. Advanced designs of air monitoring instruments such as the ACE may be used in gas centrifuge enrichment plants (GCEP) to detect the production of highly enriched uranium (HEU) or enrichments not declared by a State. Researchers at Savannah River National Laboratory in collaboration with Oak Ridge National Laboratory are developing the next generation of ES equipment for air grab and constant samples that could become an important addition to the international nuclear safeguards inspector's toolkit. Location specific air monitoring to be used to establish a baseline environmental signature of a particular facility employed for comparison of consistencies in declared operations will be described in this paper. Implementation of air monitoring will be contrasted against the use of smear ES when used during unannounced inspections, design information verification, limited frequency unannounced access, and complementary access visits at bulk handling facilities. Analysis of technical features required for tamper indication and resistance will demonstrate the viability of successful application of the system in taking ES within a bulk handling location. Further exploration of putting this technology into practice is planned to include mapping uranium enrichment facilities for the identification of optimal for installation of air monitoring devices.

Sexton, L.; Hanks, D.; Degange, J.; Brant, H.; Hall, G.; Cable-Dunlap, P.; Anderson, B.

2011-06-07T23:59:59.000Z

329

Theoretical Particle Astrophysics  

SciTech Connect (OSTI)

Abstract: Theoretical Particle Astrophysics The research carried out under this grant encompassed work on the early Universe, dark matter, and dark energy. We developed CMB probes for primordial baryon inhomogeneities, primordial non-Gaussianity, cosmic birefringence, gravitational lensing by density perturbations and gravitational waves, and departures from statistical isotropy. We studied the detectability of wiggles in the inflation potential in string-inspired inflation models. We studied novel dark-matter candidates and their phenomenology. This work helped advance the DoE's Cosmic Frontier (and also Energy and Intensity Frontiers) by finding synergies between a variety of different experimental efforts, by developing new searches, science targets, and analyses for existing/forthcoming experiments, and by generating ideas for new next-generation experiments.

Kamionkowski, Marc

2013-08-07T23:59:59.000Z

330

air force materials: Topics by E-print Network  

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

air force materials First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Air Force Research Laboratory...

331

AirUCI Summer 2005 Schedule Monday, July 11th  

E-Print Network [OSTI]

public environmental concerns 11 am to Noon: Lunch with some of the AirUCI faculty and researchers (lunch to 4 pm: Room MSTB 226B · Computer Lab: Simulations of air pollution in the LA basin #12;2 Wednesday, July 13th 9 am to 11 am: Natural Sciences I Building, Room 4112 Changed to RH306!! · Lecture

Nizkorodov, Sergey

332

An Emerging Triad: Air Pollution, Beetles, and Wildfire  

E-Print Network [OSTI]

. The effects of air pollution mimic drought and have the potential to increase fuel loads in forests, exac Southwest Research Station Forest service, U.s. Department oF agricUltUre Biochemical changes in trees stressed by drought and air pollution may attract bark beetles, which overwhelm the trees' defense

Standiford, Richard B.

333

Air Pollution Control Regulations: No. 7 - Emission of Air Contaminant...  

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

with the enjoyment of life and property. The criteria for determining compliance is listed in the regulations, and is based on other air pollution and ambient air standards...

334

Air ejector augmented compressed air energy storage system  

DOE Patents [OSTI]

Energy is stored in slack demand periods by charging a plurality of underground reservoirs with air to the same peak storage pressure, during peak demand periods throttling the air from one storage reservoir into a gas turbine system at a constant inlet pressure until the air pressure in the reservoir falls to said constant inlet pressure, thereupon permitting air in a second reservoir to flow into said gas turbine system while drawing air from the first reservoir through a variable geometry air ejector and adjusting said variable geometry air ejector, said air flow being essentially at the constant inlet pressure of the gas turbine system.

Ahrens, Frederick W. (Naperville, IL); Kartsounes, George T. (Naperville, IL)

1980-01-01T23:59:59.000Z

335

Compressed air energy storage: preliminary design and site development program in an aquifer. Final draft, Task 2: Volume 2 of 3. Characterize and explore potential sites and prepare research and development plan  

SciTech Connect (OSTI)

The characteristics of sites in Indiana and Illinois which are being investigated as potential sites for compressed air energy storage power plants are documented. These characteristics include geological considerations, economic factors, and environmental considerations. Extensive data are presented for 14 specific sites and a relative rating on the desirability of each site is derived. (LCL)

None

1980-12-01T23:59:59.000Z

336

Particle transport in plasma reactors  

SciTech Connect (OSTI)

SEMATECH and the Department of Energy have established a Contamination Free Manufacturing Research Center (CFMRC) located at Sandia National Laboratories. One of the programs underway at the CFMRC is directed towards defect reduction in semiconductor process reactors by the application of computational modeling. The goal is to use fluid, thermal, plasma, and particle transport models to identify process conditions and tool designs that reduce the deposition rate of particles on wafers. The program is directed toward defect reduction in specific manufacturing tools, although some model development is undertaken when needed. The need to produce quantifiable improvements in tool defect performance requires the close cooperation among Sandia, universities, SEMATECH, SEMATECH member companies, and equipment manufacturers. Currently, both plasma (e.g., etch, PECVD) and nonplasma tools (e.g., LPCVD, rinse tanks) are being worked on under this program. In this paper the authors summarize their recent efforts to reduce particle deposition on wafers during plasma-based semiconductor manufacturing.

Rader, D.J.; Geller, A.S.; Choi, Seung J. [Sandia National Labs., Albuquerque, NM (United States); Kushner, M.J. [Illinois Univ., Urbana, IL (United States)

1995-01-01T23:59:59.000Z

337

Health Hazards in Indoor Air  

E-Print Network [OSTI]

Health Hazards in Indoor Air. In Proceedings of the 2010for VOCs from post-1990 indoor air concentration studies inUnion project on indoor air pollutants. Allergy, 2008. 63(

Logue, Jennifer M.

2012-01-01T23:59:59.000Z

338

Texas Clean Air Act (Texas)  

Broader source: Energy.gov [DOE]

This Act is designed to safeguard the state's air resources from pollution by requiring the control and abatement of air pollution and emissions of air contaminants, consistent with the protection...

339

Air heating system  

DOE Patents [OSTI]

A self-starting, fuel-fired, air heating system including a vapor generator, a turbine, and a condenser connected in a closed circuit such that the vapor output from the vapor generator is conducted to the turbine and then to the condenser where it is condensed for return to the vapor generator. The turbine drives an air blower which passes air over the condenser for cooling the condenser. Also, a condensate pump is driven by the turbine. The disclosure is particularly concerned with the provision of heat exchanger and circuitry for cooling the condensed fluid output from the pump prior to its return to the vapor generator.

Primeau, John J. (19800 Seminole Rd., Euclid, OH 44117)

1983-03-01T23:59:59.000Z

340

Research and Application of RCF Technology in Public Building  

E-Print Network [OSTI]

, China, September 14-17, 2014 Research and Application of RCF Technology in Public Buildings 7. REFERENCES ASHRAE, 2013, “2013 Handbook-Fundamental, Thermal Comfort”, American Society of Heating, refrigeration and Air-Conditioning Engineers, Inc...Radiant Ceiling plus Fresh Air Research and Application of RCF Technology in Public Buildings ???????????? AirStar Air Conditioning Technology Group (HK) Ltd ?????????? AirStar Environment Technology Group Ltd ?????????????? YanTong Zhu...

Yan, J.; Pan, D.

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air particles research" 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

Ignition of syngas/air and hydrogen/air mixtures at low temperatures and high pressures: Experimental data interpretation and kinetic modeling implications  

SciTech Connect (OSTI)

The magnitude of ignition delay observations and homogeneous kinetic calculations seen elsewhere is a result in large measure of departures of the experimental configurations from behavior dominated solely by homogeneous gas phase kinetics. In the regime of interest (higher pressures, lower temperatures), the hydrogen-oxygen chemical induction processes can be significantly perturbed by several nonhomogeneous effects, which include catalytic aberrations. The multiple perturbations that can significantly affect induction chemistry are very difficult to remove in research experiments and nearly impossible to control in engineering applications. The implications for developing lean premixing schemes for advanced syngas gas turbine applications are that designs must consider the inherent presence of these perturbations on ignition delay as well as those that might occur from potential particle contamination of the air stream exiting the compressor, if stimulated flashback into the mixing region is to be precluded.

Dryer, Frederick L.; Chaos, Marcos [Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544-5263 (United States)

2008-01-15T23:59:59.000Z

342

Research on thermophoretic and inertial aspects of ash particle deposition on heat exchanger surfaces in coal-fired equipment. Quarterly technical report No. 11, March 1, 1989--May 31, 1989  

SciTech Connect (OSTI)

Our results on photophoresis reveal significant transport effects, mainly for particles which are carbonaceous (char-like, soot-like) rather than ash-like. Figure 2 shows the predicted dimensionless transport coefficient (proportional to the ordinary Stanton number for mass transfer) as a function of radiation/convective flux ratio and carbonaceous particle radius for laminar boundary layer flow past a wall cooled to 70% of the mainstream temperature, subjected to a radiative energy spectrum appropriate to a black-body source at ca. 1800K. One sees that large effects on the particle deposition rate are produced if the radiative flux is comparable to or exceeds the ordinary (Fourier) energy flux. We are now extending this work to include the effects of inevitable particle asymmetries, including agglomerate (shape) effects, and the role that energy transfer (eg. radiative cooling of larger particles in a population) might play in the coagulation dynamics and deposition dynamics of such aerosol populations.

Rosner, D.E.

1989-06-01T23:59:59.000Z

343

Stable levitation and dynamics of ice particles at low pressures  

E-Print Network [OSTI]

We demonstrate stable levitation and trapping of ice particles of 30~200 micon at low background gas pressures in the presence of a temperature gradient. The thermophoretic force levitates the particles, which have long lifetimes of over an hour. The equilibrium position depends on the background pressure and temperature gradient, which is consistent with theoretical expectations. Furthermore, we investigate interesting launching and merging dynamics of the levitated particles, as well as the development of instability at high background pressures. Our system provides a robust platform to investigate the aggregation of floating ice particles in air, and potentially chemical and biological processes in a microgravity environment.

Nicholas Kowalski; Bernard Xie; Colin V. Parker; Cheng Chin

2015-04-13T23:59:59.000Z

344

air force pilots: Topics by E-print Network  

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

14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 21 The Air Force Research Laboratory (AFRL) Scholars Program is currently Computer Technologies and Information...

345

air force pilot: Topics by E-print Network  

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

14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 21 The Air Force Research Laboratory (AFRL) Scholars Program is currently Computer Technologies and Information...

346

Ambient Air Quality Standards (Iowa)  

Broader source: Energy.gov [DOE]

These regulations set statewide ambient air quality standards for various contaminants. The state code follows the regulations set forth in the National Primary and Secondary Ambient Air Quality...

347

22 Research Activities 2012 Informatics  

E-Print Network [OSTI]

Computer Science Computational Astrophysics Theoretical Particle Physics Cognitive Developmental Robotics Society Human Math. Astronomy Physics Robotics The Hakubi Project: Fostering Young Researchers The Hakubi researchers are employed for five years by Kyoto University as associate or assistant professors, during which

Takada, Shoji

348

Retrofit Air Preheat Economics  

E-Print Network [OSTI]

Retrofit air preheat systems are the most reliable and efficient means to effect significant energy conservation for large existing industrial furnaces. Units can be quickly installed without a lengthy shutdown, and the furnace efficiency can...

Goolsbee, J. A.

1981-01-01T23:59:59.000Z

349

Breathing zone air sampler  

SciTech Connect (OSTI)

A sampling apparatus is provided which comprises a sampler for sampling air in the breathing zone of a wearer of the apparatus and a support for the sampler preferably in the form of a pair of eyeglasses. The sampler comprises a sampling assembly supported on the frame of the eyeglasses and including a pair of sample transport tubes which are suspended, in use, centrally of the frame so as to be disposed on opposite sides of the nose of the wearer and which each include an inlet therein that, in use, is disposed adjacent to a respective nostril of the nose of the wearer. A filter holder connected to sample transport tubes supports a removable filter for filtering out particulate material in the air sampled by the apparatus. The sample apparatus is connected to a pump for drawing air into the apparatus through the tube inlets so that the air passes through the filter.

Tobin, John (Bethel Park, PA)

1989-01-01T23:59:59.000Z

350

Breathing zone air sampler  

SciTech Connect (OSTI)

A sampling apparatus is presented which comprises a sampler for sampling air in the breathing zone of a wearer of the apparatus and a support for the sampler preferably in the form of a pair of eyeglasses. The sampler comprises a sampling assembly supported on the frame of the eyeglasses and including a pair of sample transport tubes which are suspended, in use, centrally of the frame so as to be disposed on opposite sides of the nose of the wearer and which each include an inlet therein that, in use, is disposed adjacent to a respective nostril of the nose of the wearer. A filter holder connected to sample transport tubes supports a removable filter for filtering out particulate material in the air sampled by the apparatus. The sample apparatus is connected to a pump for drawing air into the apparatus through the tube inlets so that the air passes through the filter.

Tobin, J.

1989-08-22T23:59:59.000Z

351

Padding with Compressed Air  

E-Print Network [OSTI]

We commonly find plants using padding to transport liquids or light solids short distances from tankers into storage tanks. Padding can wreck havoc in compressed air systems with limited storage, undersized cleanup equipment (dryers and filters...

Beals, C.

2004-01-01T23:59:59.000Z

352

Air Carrier Flight Operations  

E-Print Network [OSTI]

Most air carriers operate under a system of prioritized goals including safety, customer service (on-time departures and arrivals) and operating economics. The flight operations department is responsible for the safe and ...

Midkif, Alan H.

353

Air conditioning system  

DOE Patents [OSTI]

An air conditioner comprises a plurality of plates arranged in a successively stacked configuration with portions thereof having a spaced apart arrangement, and defining between successive adjacent pairs of plates at the spaced apart portions a first and second series of discrete alternating passages wherein a first air stream is passed through the first series of passages and a second air stream is passed through the second series of passages; and said stacked configuration of plates forming integrally therewith a liquid delivery means for delivering from a source a sufficient quantity of a liquid to the inside surfaces of the first series of fluid passages in a manner which provides a continuous flow of the liquid from a first end to a second end of the plurality of plates while in contact with the first air stream.

Lowenstein, Andrew; Miller, Jeffrey; Gruendeman, Peter; DaSilva, Michael

2005-02-01T23:59:59.000Z

354

Canned Air in China  

E-Print Network [OSTI]

Broadcast Transcript: Not that long ago, coal smoke made the air here in Beijing so caustic that your nasal passages were seared with each breath. Those were the good old days: Car ownership was limited to government ...

Hacker, Randi

2013-10-23T23:59:59.000Z

355

Air bag restraint device  

DOE Patents [OSTI]

A rear-seat air bag restraint device is disclosed that prevents an individual, or individuals, from continuing violent actions while being transported in a patrol vehicle`s rear seat without requiring immediate physical contact by the law enforcement officer. The air bag is activated by a control switch in the front seat and inflates to independently restrict the amount of physical activity occurring in the rear seat of the vehicle while allowing the officer to safely stop the vehicle. The air bag can also provide the officer additional time to get backup personnel to aid him if the situation warrants it. The bag is inflated and maintains a constant pressure by an air pump. 8 figs.

Marts, D.J.; Richardson, J.G.

1995-10-17T23:59:59.000Z

356

Use of airs and modis thermal infrared channels to retrieve ice cloud properties  

E-Print Network [OSTI]

In this study, we use thermal infrared channels to retrieve the optical thickness and effective particle radius of ice clouds. A physical model is used in conjunction with Atmospheric Infrared Sounder (AIRS) temperature and water vapor profiles...

Yost, Christopher Rogers

2007-04-25T23:59:59.000Z

357

Combustion Air Control  

E-Print Network [OSTI]

calibration and tune-up: ? A measure of combustion efficiency must be selected as a target operating goal for the combustion control system. Possible measures and typical targets include: Stack Gas Excess Air, 15% Stack Gas Opacity, 0.3 RN Stack Gas CO... Fuel Flows ? Preheater Inlet Temperature ? Btu Flow (Fuel Flow ? Preheater Outlet Temperature Controller Measurement) ? Ambient Temperature ? Oxygen in the Stack ? Boiler Master Controller Output ? Opac i ty Normalize the steam, air and fuel flow...

Hughart, C. L.

1979-01-01T23:59:59.000Z

358

Research on thermophoretic and inertial aspects of ash particle deposition on heat exchanger surfaces in coal-fired equipment. Quarterly technical report No. 10, December 1, 1988--February 28, 1989  

SciTech Connect (OSTI)

Little is yet known (theoretically or experimentally) about the simultaneous effects of particle inertia, particle thermophoresis and high mass loading on the important engineering problem of predicting deposition rates from flowing ``dusty`` gases. For this reason, we investigate the motion of particles present at nonnegligible mass loading in a flowing nonisothermal gaseous medium and their deposition on strongly cooled or heated solid objects by examining the instructive case of steady axisymmetric ``dusty gas`` flow between two infinite disks: an inlet (porous) disk and the impermeable ``target`` disk -- a flow not unlike that encountered in recent seeded-flame experiments. Since this stagnation flow/geometry admits interesting self-similar solutions at all Reynolds numbers, we are able to predict laminar flow mass-, momentum- and energy-transfer rate coefficients over a wide range of particle mass loadings, dimensionless particle relaxation times (Stokes numbers), dimensionless thermophoretic diffusivities, and gas Reynolds numbers. As a by-product, we illustrate the accuracy and possible improvement of our previous ``diffusion model`` for tightly coupled dusty gas systems. Moreover, we report new results illustrating the dependence of the important ``critical`` Stokes number (for incipient particle impaction) on particle mass loading and wall/gas temperature ratio for dust-laden gas motion towards ``overheated`` solid surfaces. The present formulation and insulating transport coefficients should not only be useful in explaining/predicting recent deposition rate trends in ``seeded`` flame experiments, but also highly mass-loaded systems of technological interest.

Rosner, D.E.

1989-03-01T23:59:59.000Z

359

Laser particle sorter  

DOE Patents [OSTI]

Method and apparatus are provided for sorting particles, such as biological particles. A first laser is used to define an optical path having an intensity gradient which is effective to propel the particles along the path but which is sufficiently weak that the particles are not trapped in an axial direction. A probe laser beam is provided for interrogating the particles to identify predetermined phenotypical characteristics of the particles. A second laser beam is provided to intersect the driving first laser beam, wherein the second laser beam is activated by an output signal indicative of a predetermined characteristic. The second laser beam is switchable between a first intensity and a second intensity, where the first intensity is effective to displace selected particles from the driving laser beam and the second intensity is effective to propel selected particles along the deflection laser beam. The selected particles may then be propelled by the deflection beam to a location effective for further analysis. 2 figs.

Martin, J.C.; Buican, T.N.

1987-11-30T23:59:59.000Z

360

Clearing the Air: "AIR" Training Session Wednesday, December 18  

E-Print Network [OSTI]

Clearing the Air: "AIR" Training Session Wednesday, December 18 12 p.m. ­ 1:00 p.m. Human Resources/Tobacco- Free! Join us for an interactive session and learn more about "AIR" (Approach, Inform, Refer, and safe campus environment. Visit Clearing the Air website (http://tobaccofree.ucr.edu/) for more

Reed, Christopher A.

Note: This page contains sample records for the topic "air particles research" 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

Air distribution effectiveness with stratified air distribution systems  

E-Print Network [OSTI]

1 Air distribution effectiveness with stratified air distribution systems Kisup Lee* Zheng Jiang, Ph.D Qingyan Chen, Ph.D. Student Member ASHRAE Fellow ASHRAE ABSTRACT Stratified air distribution systems such as Traditional Displacement Ventilation (TDV) and Under- Floor Air Distribution (UFAD

Chen, Qingyan "Yan"

362

inAir: Sharing Indoor Air Quality Measurements and Visualizations  

E-Print Network [OSTI]

evidence has indicated that indoor air pollution within homes and other buildings can be worse than the outdoor air pollution in even the largest and most industrialized cities. For example, the California Air Resources Board estimates that indoor air pollutant levels are 25-62% greater than outside levels [4

Mankoff, Jennifer

363

Air Quality: Air Pollutants, SLAC Emissions Sources, and Regulatory Reference  

E-Print Network [OSTI]

permit regulations are designed to track, record, and control air pollutants belonging to severalAir Quality: Air Pollutants, SLAC Emissions Sources, and Regulatory Reference Department: Chemical on chemical classifications. This reference outlines major categories of air pollutants found at SLAC

Wechsler, Risa H.

364

E-Print Network 3.0 - air resources branch Sample Search Results  

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

& Environmental Engineering Summary: pollutants, human exposure to indoor air pollution, and control of indoor pollutants. Much of the research... building energy, indoor...

365

E-Print Network 3.0 - air transportation policy Sample Search...  

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

Analysis (CTA) Research Areas Aviation Safety Air Traffic Management... Analysis Data, Statistical Analysis Geo-Spatial Information Tools Defense Transportation Energy...

366

E-Print Network 3.0 - air crew members Sample Search Results  

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

crews prefer regular schedules. Once... 1 Supported in part by grants from the Office of Naval Research ... Source: George Mason University, Center for Air Transportation Systems...

367

E-Print Network 3.0 - air conditioner utilizing Sample Search...  

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

51 National Renewable Energy Laboratory (NREL) researchers enhanced this building energy optimization tool to analyze Summary: --when an existing component (e.g., an air...

368

Air Cooling Technology for Advanced Power Electronics and Electric Machines (Presentation)  

SciTech Connect (OSTI)

This presentation gives an overview of the status and FY09 accomplishments for the NREL thermal management research project 'Air Cooling for Power Electronics'.

Bharathan, D.

2009-05-01T23:59:59.000Z

369

E-Print Network 3.0 - air conditioning absorption Sample Search...  

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

after cooling with excess air andor heat ... Source: Columbia University - Waste-to-Energy Research and Technology Council (WTERT) Collection: Renewable Energy 17 A broadband...

370

E-Print Network 3.0 - air pollution-mediated impacts Sample Search...  

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

impacts Search Powered by Explorit Topic List Advanced Search Sample search results for: air pollution-mediated impacts Page: << < 1 2 3 4 5 > >> 1 Natural Environment Research...

371

E-Print Network 3.0 - air force technical Sample Search Results  

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

Technologies and Information Sciences 16 The Effect of Pour Time and Head Height on Air Entrainment Malcolm Blair, Technical and Research Director, SFSA Summary: The Effect...

372

E-Print Network 3.0 - air conditioning conference Sample Search...  

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

Energy Storage, Conversion and Utilization 13 The Effect of Pour Time and Head Height on Air Entrainment Malcolm Blair, Technical and Research Director, SFSA Summary: at this...

373

E-Print Network 3.0 - air mass approaches Sample Search Results  

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

Energy Storage, Conversion and Utilization 54 The Effect of Pour Time and Head Height on Air Entrainment Malcolm Blair, Technical and Research Director, SFSA Summary: an...

374

E-Print Network 3.0 - air force information Sample Search Results  

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

(WTERT) Collection: Renewable Energy 57 The Effect of Pour Time and Head Height on Air Entrainment Malcolm Blair, Technical and Research Director, SFSA Summary: The Effect...

375

E-Print Network 3.0 - air force basic Sample Search Results  

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

University Collection: Materials Science 36 The Effect of Pour Time and Head Height on Air Entrainment Malcolm Blair, Technical and Research Director, SFSA Summary: the pouring...

376

E-Print Network 3.0 - air force surveys Sample Search Results  

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

; Energy Storage, Conversion and Utilization 8 The Effect of Pour Time and Head Height on Air Entrainment Malcolm Blair, Technical and Research Director, SFSA Summary: the diameter...

377

E-Print Network 3.0 - air force operations Sample Search Results  

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

Energy Storage, Conversion and Utilization 57 The Effect of Pour Time and Head Height on Air Entrainment Malcolm Blair, Technical and Research Director, SFSA Summary: The Effect...

378

E-Print Network 3.0 - air bubbles mimic Sample Search Results  

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

of Engineering, Chaos Research Group Collection: Engineering 6 Effects of intermittent entrainment of air bubbles by breaking wind waves on ocean reflectance and underwater...

379

DHS Research Experience Summary  

SciTech Connect (OSTI)

I learned a great deal during my summer internship at Lawrence Livermore National Laboratory (LLNL). I plan to continue a career in research, and I feel that my experience at LLNL has been formative. I was exposed to a new area of research, as part of the Single Particle Aerosol Mass Spectrometry (SPAMS) group, and I had the opportunity to work on projects that I would not have been able to work on anywhere else. The projects both involved the use of a novel mass spectrometer that was developed at LLNL, so I would not have been able to do this research at any other facility. The first project that Zachary and I worked on involved using SPAMS to detect pesticides. The ability to rapidly detect pesticides in a variety of matrices is applicable to many fields including public health, homeland security, and environmental protection. Real-time, or near real-time, detection of potentially harmful or toxic chemical agents can offer significant advantages in the protection of public health from accidental or intentional releases of harmful pesticides, and can help to monitor the environmental effects of controlled releases of pesticides for pest control purposes. The use of organophosphate neurotoxins by terrorists is a possibility that has been described; this is a legitimate threat, considering the ease of access, toxicity, and relatively low cost of these substances. Single Particle Aerosol Mass Spectrometry (SPAMS) has successfully been used to identify a wide array of chemical compounds, including drugs, high explosives, biological materials, and chemical warfare agent simulants. Much of this groundbreaking work was carried out by our group at LLNL. In our work, we had the chance to show that SPAMS fulfills a demonstrated need for a method of carrying out real-time pesticide detection with minimal sample preparation. We did this by using a single particle aerosol mass spectrometer to obtain spectra of five different pesticides. Pesticide samples were chosen to represent four common classes of pesticides that are currently used in the US. Permethrin (a pyrethrin insecticide), dichlorvos and malathion (organophosphates), imidacloprid (a chloronicotinyl pesticide), and carbaryl (a carbamate) were selected for analysis. Samples were aerosolized either in water (using a plastic nebulizer) or in ethanol (using a glass nebulizer), and the particles entered the SPAMS instrument through a focusing lens stack. The particles then passed through a stage with three tracking lasers that were used to determine each particle's velocity. This velocity was used to calculate when to fire a desorption/ionization (D/I) laser in order to fragment the particle for analysis in a dual polarity time of flight mass spectrometer. Signals were digitized, and then analyzed using LLNL-developed software. We obtained chemical mass spectral signatures for each pesticide, and assigned peaks to the mass spectra based on our knowledge of the pesticides chemical structures. We then proved the robustness of our detection method by identifying the presence of pesticides in two real-world matrices: Raid{trademark} Ant Spray and a flea collar. To sample these, we simply needed to direct aerosolized particles into the SPAMS instrument. The minimal sample preparation required makes SPAMS very attractive as a detector. Essentially, we were able to show that SPAMS is a reliable and effective method for detecting pesticides at extremely low concentrations in a variety of matrices and physical states. The other project that I had the opportunity to be a part of did not involve data collection in the lab; it consisted of analyzing a large amount of data that had already been collected. We got to look at data collected over the course of about two months, when the SPAMS instrument was deployed to a public place. The machine sampled the air and collected spectra for over two months, storing all the spectra and associated data; we then looked at an approximately two-month subset of this data to search for patterns in the types of particles being detected. Essentially, we we

Venkatachalam, V

2008-10-24T23:59:59.000Z

380

Air exchange effectiveness of conventional and task ventilation for offices  

SciTech Connect (OSTI)

Air quality and comfort complaints within large buildings are often attributed to air distribution problems. We define three air exchange effectiveness parameters related to air distribution. The first two indicate the indoor air flow pattern (i.e., the extent of short circuiting, mixing, or displacement flow) for an entire building or region. The third parameter is most useful for assessments of the spatial variability of ventilation. We also define the air diffusion effectiveness which indicates the air flow pattern within specific rooms or sections of buildings. The results of measurements of these parameters in US office buildings by the authors and other researchers are reviewed. Almost all measurements indicate very limited short circuiting or displacement flow between locations of air supply and removal. However, a moderate degree of short circuiting is evident from a few measurements in rooms with heated supply air. The results of laboratory-based measurements by the authors are consistent with the field data. Our measurements in office buildings do indicate that ventilation rates can vary substantially between indoor locations, probably due to variation in air supply rates between locations rather than variation in the indoor air flow patterns. One possible method of improving air distribution is to employ task ventilation with air supplied closer to the occupant`s breathing zone. We have evaluated two task ventilation systems in a laboratory setting. During most operating conditions, these systems did not provide a region of substantially increased ventilation where occupants breath. However, both systems are capable of providing substantially enhanced ventilation at the breathing zone under some operating conditions. Therefore, task ventilation is a potential option for using ventilation air more effectively.

Fisk, W.J.; Faulkner, D.; Prill, R.J.

1991-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "air particles research" 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

Air exchange effectiveness of conventional and task ventilation for offices  

SciTech Connect (OSTI)

Air quality and comfort complaints within large buildings are often attributed to air distribution problems. We define three air exchange effectiveness parameters related to air distribution. The first two indicate the indoor air flow pattern (i.e., the extent of short circuiting, mixing, or displacement flow) for an entire building or region. The third parameter is most useful for assessments of the spatial variability of ventilation. We also define the air diffusion effectiveness which indicates the air flow pattern within specific rooms or sections of buildings. The results of measurements of these parameters in US office buildings by the authors and other researchers are reviewed. Almost all measurements indicate very limited short circuiting or displacement flow between locations of air supply and removal. However, a moderate degree of short circuiting is evident from a few measurements in rooms with heated supply air. The results of laboratory-based measurements by the authors are consistent with the field data. Our measurements in office buildings do indicate that ventilation rates can vary substantially between indoor locations, probably due to variation in air supply rates between locations rather than variation in the indoor air flow patterns. One possible method of improving air distribution is to employ task ventilation with air supplied closer to the occupant's breathing zone. We have evaluated two task ventilation systems in a laboratory setting. During most operating conditions, these systems did not provide a region of substantially increased ventilation where occupants breath. However, both systems are capable of providing substantially enhanced ventilation at the breathing zone under some operating conditions. Therefore, task ventilation is a potential option for using ventilation air more effectively.

Fisk, W.J.; Faulkner, D.; Prill, R.J.

1991-12-01T23:59:59.000Z

382

PERFORMANCE EVALUATION OF AN AIR-TO-AIR HEAT PUMP COUPLED WITH TEMPERATE AIR-SOURCES INTEGRATED INTO A DWELLING  

E-Print Network [OSTI]

PERFORMANCE EVALUATION OF AN AIR-TO-AIR HEAT PUMP COUPLED WITH TEMPERATE AIR-SOURCES INTEGRATED.peuportier@mines-paristech.fr, Tel.: +33 1 40 51 91 51 ABSTRACT An inverter-driven air-to-air heat pump model has been developped capacity air-to-air heat pump coupled with temperate air sources (crawlspace, attic, sunspace, heat

Paris-Sud XI, Université de

383

Simulation of aerosol dynamics: A comparative review of algorithms used in air quality models  

SciTech Connect (OSTI)

A comparative review of algorithms currently used in air quality models to simulate aerosol dynamics is presented. This review addresses coagulation, condensational growth, nucleation, and gas/particle mass transfer. Two major approaches are used in air quality models to represent the particle size distribution: (1) the sectional approach in which the size distribution is discretized into sections and particle properties are assumed to be constant over particle size sections and (2) the modal approach in which the size distribution is approximated by several modes and particle properties are assumed to be uniform in each mode. The results of this study provide useful information to select algorithms to simulate aerosol dynamics in air quality models and to improve the accuracy of existing algorithms.

Zhang, Y.; Seigneur, C.; Seinfeld, J.H.; Jacobson, M.Z.; Binkowski, F.S.

1999-01-01T23:59:59.000Z

384

Air PSE (Problem Solving Environment)  

E-Print Network [OSTI]

PSE - 1 Air PSE (Problem Solving Environment) MODELLING OF AIR POLLUTION IN THE LOS ANGELES BASIN WITH AIR PSE Developed by Prof. Donald Dabdub Computational Environmental Sciences Laboratory Mechanical COMPUTER MODELS An air pollution model is a computer program that computes how the different chemical

Nizkorodov, Sergey

385

EMISSIONS TO AIR OPERATIONAL PROCEDURE  

E-Print Network [OSTI]

EMISSIONS TO AIR OPERATIONAL PROCEDURE Swansea University Estates Services Singleton Park Swansea to Air Department: Estates and Facilities Site: All Author: Ambreen Jahangir Approved by: Mark Durdin PURPOSE: To minimise emissions and discharges to air from boilers, fume cupboards, air conditioning

Harman, Neal.A.

386

Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron  

E-Print Network [OSTI]

Accelerators | Photon Science | Particle Physics Deutsches Elektronen-Synchrotron A Research Centre DESY DESY is one of the world's leading research centres for photon science, particle and astroparticle with universities. The DESY focus is on conventional and plasma-based accele- rators with applications in photon

387

Ultrahigh Sensitivity Heavy Noble Gas Detectors for Long-Term Monitoring and for Monitoring Air  

SciTech Connect (OSTI)

The primary objective of this research project is to develop heavy noble gas (krypton, xenon, and radon) detectors for (1) long-term monitoring of transuranic waste, spent fuel, and other uranium and thorium bearing wastes and (2) alpha particle air monitors that discriminate between radon emissions and other alpha emitters. A University of Cincinnati/Argonne National Laboratory (UC/ANL) Team was assembled to complete this detector development project. Effective 1/4/99, the UC PI (John Valentine) became an Associate Professor in the Nuclear and Radiological Engineering Program of the George W. Woodruff School of Mechanical Engineering at the Georgia Institute of Technology. Consequently, this project was transferred to Georgia Tech (GT) with the PI. UC funding extended to 1/31/99 and GT funding became active 4/26/99. Due to this transfer, we will refer to the research team as the GT/UC/ANL Team for this Annual Report. Subsequently, we will use GT/ANL Team. DOE needs that are ad dressed by this project include improved long-term monitoring capability and improved air monitoring capability during remedial activities. Successful development and implementation of the proposed detection systems could significantly improve current capabilities with relatively simple and inexpensive equipment.

Valentine,John D.; Gross, Kenny

1999-06-01T23:59:59.000Z

388

Hadronic multiparticle production at ultrahigh energies and extensive air showers  

SciTech Connect (OSTI)

Studies of the nature of cosmic ray particles at the highest energies are based on the measurement of extensive air showers. Most cosmic ray properties can therefore be obtained only from the interpretation of air shower data and are thus dependent on predictions of hadronic interaction models at ultrahigh energies. We discuss different scenarios of model extrapolations from accelerator data to air shower energies and investigate their impact on the corresponding air shower predictions. To explore the effect of different extrapolations by hadronic interaction models we developed an ad hoc model. This model is based on the modification of the output of standard hadronic interaction event generators within the air shower simulation process and allows us to study the impact of changing interaction features on the air shower development. In a systematic study we demonstrate the resulting changes of important air shower observables and also discuss them in terms of the predictions of the Heitler model of air shower cascades. It is found that the results of our ad hoc modifications are, to a large extent, independent of the choice of the underlying hadronic interaction model.

Ulrich, Ralf; Engel, Ralph; Unger, Michael [Pennsylvania State University, Center for Particle Astrophysics, 104 Davey Laboratory, University Park, Pennsylvania 16802 (United States); Karlsruhe Institute of Technology (KIT), Institut fuer Kernphysik, P.O. Box 3640, 76021 Karlsruhe (Germany)

2011-03-01T23:59:59.000Z

389

RESEARCH POSTER PRESENTATION DESIGN 2012 www.PosterPresentations.com  

E-Print Network [OSTI]

RESEARCH POSTER PRESENTATION DESIGN © 2012 www.PosterPresentations.com Air pollution is currently Inferring Air Pollution by Sniffing Social Media To deal with the air pollution, we first need to monitor it also suffer air pollution 1.Linear regression model on Weibo bag-of-words features. 2.K nearest

Zhu, Xiaojin "Jerry"

390

AIR FLOW DISTRIBUTION IN A HIGH-RISE RESIDENTIAL Helmut E. Feustel and Richard C. Diamond  

E-Print Network [OSTI]

AIR FLOW DISTRIBUTION IN A HIGH-RISE RESIDENTIAL BUILDING Helmut E. Feustel and Richard C. Diamond Lawrence Berkeley National Laboratory, Berkeley, USA ABSTRACT The provision of ventilation air for high-rise multifamily housing has plagued retrofit practitioners and researchers alike. We have been studying the air

Diamond, Richard

391

Noxious Weed Survey of the U.S. Air Force Academy and  

E-Print Network [OSTI]

Noxious Weed Survey of the U.S. Air Force Academy and Farish Outdoor Recreation Area Colorado 80523 http://www.cnhp.colostate.edu April 15, 2003 Prepared For: U.S. Air Force Academy Department ................................................................................................... 5 OTHER RESEARCH AT THE U.S. AIR FORCE ACADEMY AND FARISH OUTDOOR RECREATION AREA

392

Lagrangian air-mass tracking with smart balloons during ACE-2 Randy Johnson  

E-Print Network [OSTI]

of the boundary layer h = zi). It is the result of entrainment of air from above into the boundary layerLagrangian air-mass tracking with smart balloons during ACE-2 Randy Johnson National Oceanic and Atmospheric Administration, Air Resources Laboratory, Field Research Division, Idaho Falls, Idaho 83402 Steven

Businger, Steven

393

Characterization and air drying of chunkwood and chips  

SciTech Connect (OSTI)

Chunkwood was found to be composed of a few large particles and many small particles with the large particles constituting almost half the total weight. More than 75% of the chunk weight was composed of particles weighing more than 100 grams (ovendry), while 85% of the chip weight was composed of particles weighing 3 grams or less. Energy densities ranged from 89,675 Btu/ft/sup 3/ for green aspen chips to 162,520 Btu/ft/sup 3/ for dried sugar maple chunks. Chunks and chips were air-dried from July through October in eight covered cribs. For both species tested, the chunks dried faster than the chips to about 20% moisture content.

Sturos, J.B.

1984-01-01T23:59:59.000Z

394

Compressed air energy storage system  

DOE Patents [OSTI]

An internal combustion reciprocating engine is operable as a compressor during slack demand periods utilizing excess power from a power grid to charge air into an air storage reservoir and as an expander during peak demand periods to feed power into the power grid utilizing air obtained from the air storage reservoir together with combustible fuel. Preferably the internal combustion reciprocating engine is operated at high pressure and a low pressure turbine and compressor are also employed for air compression and power generation.

Ahrens, Frederick W. (Naperville, IL); Kartsounes, George T. (Naperville, IL)

1981-01-01T23:59:59.000Z

395

Desulfurization of lignite using steam and air  

E-Print Network [OSTI]

with nitrogen to remove oxygen and then the drums were sealed until needed for a run. This procedure was used to prevent weathering and loss of moisture from the coal. Prior to charging, t' he lignite was sized to minus 18 mesh. The larg- er particles...DESULFURIZATION OF LIGNITE USING STEAM AND AIR A Thesis by GLENN ALLEN CARTER, JR. Submitted to the Graduate College of Texas A&M University in partial fulfillment of the degree of MASTER OF SCIENCE August 1982 Major Subject: Chemical...

Carter, Glenn Allen

1982-01-01T23:59:59.000Z

396

Development of an ambient air sampler that satisfies RF plant monitoring requirements  

SciTech Connect (OSTI)

EG G Rocky Flats Plant (RFP) is developing a new ambient air particulate sampler to replace units that have been in service for about twenty years. The new sampler is required to operate at a flow rate approximately twice that of the existing samplers and admit particles as large as 70 micrometers aerodynamic diameter. The sampler provides two size fractions with separation at 10 micrometers. using a single stage impactor designed at RFP and carrying a Department of Energy (DOE) patent. The sampler is modular for easy servicing in the field and its operation can be checked via radiotelemetry. The sampler, designed to meet Environmental Protection Agency (EPA) requirements for PM-10 sampling, is currently being characterized in EPA's laboratories at Research Triangle Park, North Carolina.

Nininger, R.C.; Pauley, B.J.

1993-01-01T23:59:59.000Z

397

Development of an ambient air sampler that satisfies RF plant monitoring requirements  

SciTech Connect (OSTI)

EG&G Rocky Flats Plant (RFP) is developing a new ambient air particulate sampler to replace units that have been in service for about twenty years. The new sampler is required to operate at a flow rate approximately twice that of the existing samplers and admit particles as large as 70 micrometers aerodynamic diameter. The sampler provides two size fractions with separation at 10 micrometers. using a single stage impactor designed at RFP and carrying a Department of Energy (DOE) patent. The sampler is modular for easy servicing in the field and its operation can be checked via radiotelemetry. The sampler, designed to meet Environmental Protection Agency (EPA) requirements for PM-10 sampling, is currently being characterized in EPA`s laboratories at Research Triangle Park, North Carolina.

Nininger, R.C.; Pauley, B.J.

1993-05-01T23:59:59.000Z

398

Hydraulically refueled battery employing a packed bed metal particle electrode  

DOE Patents [OSTI]

A secondary zinc air cell, or another selected metal air cell, employing a spouted/packed metal particle bed and an air electrode is described. More specifically, two embodiments of a cell, one that is capable of being hydraulically recharged, and a second that is capable of being either hydraulically or electrically recharged. Additionally, each cell includes a sloped bottom portion to cause stirring of the electrolyte/metal particulate slurry when the cell is being hydraulically emptied and refilled during hydraulically recharging of the cell. 15 figs.

Siu, S.C.; Evans, J.W.

1998-12-15T23:59:59.000Z

399

Hydraulically refueled battery employing a packed bed metal particle electrode  

DOE Patents [OSTI]

A secondary zinc air cell, or another selected metal air cell, employing a spouted/packed metal particle bed and an air electrode. More specifically, two embodiments of a cell, one that is capable of being hydraulically recharged, and a second that is capable of being either hydraulically or electrically recharged. Additionally, each cell includes a sloped bottom portion to cause stirring of the electrolyte/metal particulate slurry when the cell is being hydraulically emptied and refilled during hydraulically recharging of the cell.

Siu, Stanley C. (Castro Valley, CA); Evans, James W. (Piedmont, CA)

1998-01-01T23:59:59.000Z

400

Ventilation Air Preconditioning Systems  

E-Print Network [OSTI]

capacity. Optional Morning Warm-up If connected to a liquid condenser bundle, the icemaking chiller can serve as a heat recovery heat pump. The chiller can freeze ice in the early morning to provide heat for morning warm-up, and use the ice... the cooling coil or drain pan re-evaporates and is delivered to occupied space during compressor off-cycles. Although heat recovery between the exhaust air and ventilation air can reduce the impact on the HVAC system, many buildings do not have central...

Khattar, M.; Brandemuehl, M. J.

1996-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air particles research" 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

Modelling new particle formation events in the South African savannah  

SciTech Connect (OSTI)

Africa is one of the less studied continents with respect to atmospheric aerosols. Savannahs are complex dynamic systems sensitive to climate and land-use changes, but the interaction of these systems with the atmosphere is not well understood. Atmospheric particles, called aerosols, affect the climate on regional and global scales, and are an important factor in air quality. In this study, measurements from a relatively clean savannah environment in South Africa were used to model new particle formation and growth. There already are some combined long-term measurements of trace gas concentrations together with aerosol and meteorological variables available, but to our knowledge this is the first detailed simulation that includes all the main processes relevant to particle formation. The results show that both of the particle formation mechanisms investigated overestimated the dependency of the formation rates on sulphuric acid. From the two particle formation mechanisms tested in this work, the approach that included low volatile organic compounds to the particle formation process was more accurate in describing the nucleation events than the approach that did not. To obtain a reliable estimate of aerosol concentration in simulations for larger scales, nucleation mechanisms would need to include organic compounds, at least in southern Africa. This work is the first step in developing a more comprehensive new particle formation model applicable to the unique environment in southern Africa. Such a model will assist in better understanding and predicting new particle formation – knowledge which could ultimately be used to mitigate impacts of climate change and air quality.

Gierens, Rosa; Laakso, Lauri; Mogensen, Ditte; Vakkari, Ville; Buekes, Johan P.; Van Zyl, Pieter; Hakola, H.; Guenther, Alex B.; Pienaar, J. J.; Boy, Michael

2014-05-28T23:59:59.000Z

402

Measurements of the chemical, physical, and optical properties of single aerosol particles  

E-Print Network [OSTI]

the 3-km zone of lead/zinc smelters, Environmental Science &in air quality near a copper smelter, Science of the TotalParticles from a Copper Smelter, Environmental Science &

Moffet, Ryan Christopher

2007-01-01T23:59:59.000Z

403

Measurement of Pressure Dependent Fluorescence Yield of Air: Calibration Factor for UHECR Detectors  

SciTech Connect (OSTI)

In a test experiment at the Final Focus Test Beam of the Stanford Linear Accelerator Center, the fluorescence yield of 28.5 GeV electrons in air and nitrogen was measured. The measured photon yields between 300 and 400 nm at 1 atm and 29 C are Y(760 Torr){sup air} = 4.42 {+-} 0.73 and Y(760 Torr){sup N{sub 2}} = 29.2 {+-} 4.8 photons per electron per meter. Assuming that the fluorescence yield is proportional to the energy deposition of a charged particle traveling through air, good agreement with measurements at lower particle energies is observed.

Belz, J.W.; Burt, G.W.; Cao, Z.; Chang, F.Y.; Chen, C.C.; Chen, C.W.; Chen, P.; Field, C.; Findlay, J.; Huntemeyer, Petra; Huang, M.A.; Hwang, W.-Y.P.; Iverson, R.; Jones, B.F.; Jui, C.C.H.; Kirn, M.; Lin, G.-L.; Loh, E.C.; Maestas, M.M.; Manago, N.; Martens, K.; /Montana U. /Utah U. /Taiwan, Natl. Taiwan U. /SLAC /Rutgers U., Piscataway

2005-07-06T23:59:59.000Z

404

Adhesive particle shielding  

DOE Patents [OSTI]

An efficient device for capturing fast moving particles has an adhesive particle shield that includes (i) a mounting panel and (ii) a film that is attached to the mounting panel wherein the outer surface of the film has an adhesive coating disposed thereon to capture particles contacting the outer surface. The shield can be employed to maintain a substantially particle free environment such as in photolithographic systems having critical surfaces, such as wafers, masks, and optics and in the tools used to make these components, that are sensitive to particle contamination. The shield can be portable to be positioned in hard-to-reach areas of a photolithography machine. The adhesive particle shield can incorporate cooling means to attract particles via the thermophoresis effect.

Klebanoff, Leonard Elliott (Dublin, CA); Rader, Daniel John (Albuquerque, NM); Walton, Christopher (Berkeley, CA); Folta, James (Livermore, CA)

2009-01-06T23:59:59.000Z

405

Simulation of particle agglomeration using dissipative particle dynamics  

E-Print Network [OSTI]

Attachment of particles to one another due to action of certain inter-particle forces is called as particle agglomeration. It has applications ranging from efficient capture of ultra-fine particles generated in coal-burning boilers to effective...

Mokkapati, Srinivas Praveen

2009-05-15T23:59:59.000Z

406

E-Print Network 3.0 - air surveillance air Sample Search Results  

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

Sample search results for: air surveillance air Page: << < 1 2 3 4 5 > >> 1 Public Health Air Surveillance Evaluation Project Public Health Air Surveillance Evaluation (PHASE)...

407

Sticking with air  

SciTech Connect (OSTI)

A decision to replace more than 300 aging damper actuators at Independence Plant in Newark, Arkensas forced Entergy to make a choice between pneumatic and electric actuator designs. The dampers route air flow through separate dedicated compartments to ensure proper firing of pulverised coal. The reasons that pneumatics was chosen are discussed in this article. 4 figs.

Coker, S.N. [Entergy (US). Independence Plant

2005-06-01T23:59:59.000Z

408

Cyclone aerosol sampling and particle deposition in tubing elements following elbow bends  

E-Print Network [OSTI]

on Deposition. Influence of an Elbow Bend on Straight Tube Deposition. . . Discussion of Errors. . . . . . . . . . . . . . 27 3l 35 SUMMARY AND CONCLUSIONS. 36 Ambient Air Sampling Aerosol Transport . 36 37 FUTI JRE WORK 38 Ambient Air Sampling... Cunningham's correction factor for a particle reference particle concentration concetration of the sodium fluoroscein collected at the inlet to the system cutpoint diameter aerodynamic equivalent diameter cyclone body diameter cyclone outlet tube...

Wente, William Baker

1995-01-01T23:59:59.000Z

409

Air Corrosivity in U.S. Outdoor-Air-Cooled Data Centers is Similar to That in Conventional Data Centers  

SciTech Connect (OSTI)

There is a concern that environmental-contamination caused corrosion may negatively affect Information Technology (IT) equipment reliability. Nineteen data centers in the United States and two in India were evaluated using Corrosion Classification Coupons (CCC) to assess environmental air quality as it may relate IT equipment reliability. The data centers were of two basic types: closed and outside-air cooled. A closed data center provides cool air to the IT equipment using air conditioning in which only a small percent age of the recirculation air is make-up air continuously supplied from outside to meet human health requirements. An outside-air cooled data center uses outside air directly as the primary source for IT equipment cooling. Corrosion measuring coupons containing copper and silver metal strips were placed in both closed and outside-air cooled data centers. The coupons were placed at each data center (closed and outside-air cooled types) with the location categorized into three groups: (1) Outside - coupons sheltered, located near or at the supply air inlet, but located before any filtering, (2) Supply - starting just after initial air filtering continuing inside the plenums and ducts feeding the data center rooms, and (3) Inside located inside the data center rooms near the IT equipment. Each coupon was exposed for thirty days and then sent to a laboratory for a corrosion rate measurement analysis. The goal of this research was to investigate whether gaseous contamination is a concern for U.S. data center operators as it relates to the reliability of IT equipment. More specifically, should there be an increased concern if outside air for IT equipment cooling is used To begin to answer this question limited exploratory measurements of corrosion rates in operating data centers in various locations were undertaken. This study sought to answer the following questions: (1) What is the precision of the measurements (2) What are the approximate statistical distributions of copper and silver corrosion rates in the sampled data centers(3) To what extent are copper and silver corrosion measurements related (4) What is the relationship of corrosion rate measurements between outside-air cooled data centers compared to closed data centers (5) How do corrosivity measurements relate to IT equipment failure rates The data from our limited sample size suggests that most United States data center operators should not be concerned with environmental gaseous contamination causing high IT equipment failure rates even when using outside-air cooling. The research team recommends additional basic research on how environmental conditions, specifically gaseous contamination, affect electronic equipment reliability.

Coles, Henry C.; Han, Taewon; Price, Phillip N.; Gadgil, Ashok J.; Tschudi, William F.

2011-07-17T23:59:59.000Z

410

Spatially resolved chemical imaging of individual atmospheric particles using nanoscale imaging mass spectrometry: Insighs into particle origin and chemistry  

SciTech Connect (OSTI)

Knowledge of the spatially-resolved composition of atmospheric particles is essential for differentiating between their surface versus bulk chemistry, understanding particle reactivity and the potential environmental impact. We demonstrate the application of nanometer-scale secondary ion mass spectrometry (Cameca NanoSIMS 50 ion probe) for 3D chemical imaging of individual atmospheric particles without any sample pre-treatment, such as the sectioning of particles. Use of NanoSIMS depth profile analysis enables elemental mapping of particles with nanometer spatial resolution over a broad of range of particle sizes. We have used this technique to probe spatially resolved composition of ambient particles collected during a field campaign in Mexico City. Particles collected during this campaign have been extensively characterized in the past using other particle analysis techniques and hence offer a unique opportunity for exploring the utility of depth resolved chemical imaging in ambient particle research. 1 Particles examined in this study include those collected during a pollution episode related to urban waste incineration as well as background particles from the same location prior to the episode. Particles from the pollution episode show substantial intra-particle compositional variability typical of particles resulting from multiple emission sources. In contrast, the background particles have relatively homogeneous compositions with enhanced presence of nitrogen, oxygen and chlorine at the particle surface. The observed surface enhancement of nitrogen and oxygen species is consistent with the presence of surface nitrates resulting from gas-particle heterogeneous interactions and is indicative of atmospheric ageing of the particles. The results presented here illustrate 3D characterization of ambient particles for insights into their chemical history.

Ghosal, Sutapa; Weber, Peter K.; Laskin, Alexander

2014-04-21T23:59:59.000Z

411

Industrial HVAC Air-to-Air Energy Recovery Retrofit Economics  

E-Print Network [OSTI]

Retrofitting air-to-air energy recovery equipment is relatively simply to design and easy to install. Additionally, HVAC energy recovery is almost risk free when compared to process retrofit. Life cycle cost analysis is the best way to illustrate...

Graham, E. L.

1980-01-01T23:59:59.000Z

412

Vermont Air Pollution Control Regulations, Ambient Air Quality Standards (Vermont)  

Broader source: Energy.gov [DOE]

The ambient air quality standards are based on the national ambient air quality standards. The Vermont standards are classified as primary and secondary standards and judged adequate to protect...

413

Entrainment of refrigerated air curtains down a wall  

SciTech Connect (OSTI)

Refrigerated air curtains are used in open supermarket display cases as a barrier between the warm ambient air and the cold refrigerated air. Entrainment of ambient air into the curtain by shear layer mixing contributes to both the sensible and the latent heat load on the display case. To better understand the fluid dynamics which govern entrainment, velocity and temperature measurements of the curtains were made in a refrigerated display case, which was modified to allow a more fundamental flow. In particular, a vertical solid wall was installed to approximately represent a fully-stocked configuration. As such, negatively-buoyant wall jets (with high inflow turbulence) in the Reynolds number range of 4200-8000 and in the Richardson number range of 0.13-0.58 were examined. To define the air curtain vortex structures, flow visualization of the curtain interface was employed. The results of which showed that the entrainment of the ambient air was found to be governed by a variety of eddy engulfing structures. Particle Image Velocimetry was used to examine the velocity profiles of the air curtains in a non-intrusive manner, the measurements of which indicated negatively-buoyant acceleration following the jet exhaust, followed by a more linear curtain growth characteristic of isothermal wall jets. In addition, thermocouples were used to obtain the net increase in temperature of the curtain due to entrainment, where it was found that the dimensionless thermal energy loss decreased with decreasing Reynolds number.

Field, Brandon S.; Loth, Eric [Department of Aerospace Engineering, University of Illinois, Urbana-Champaign, 104 South Wright Street, Urbana, IL 61801 (United States)

2006-01-01T23:59:59.000Z

414

NREL Provides Guidance to Improve Air Mixing and Thermal Comfort in Homes (Fact Sheet)  

SciTech Connect (OSTI)

NREL research determines optimal HVAC system design for proper air mixing and thermal comfort in homes. As U.S. homes become more energy efficient, heating, ventilation, and cooling (HVAC) systems will be downsized, and the air flow volumes required to meet heating and cooling loads may be too small to maintain uniform room air mixing-which can affect thermal comfort. Researchers at the National Renewable Energy Laboratory (NREL) evaluated the performance of high sidewall air supply inlets and confirmed that these systems can achieve good air mixing and provide suitable comfort levels for occupants. Using computational fluid dynamics modeling, NREL scientists tested the performance of high sidewall supply air jets over a wide range of parameters including supply air temperature, air velocity, and inlet size. This technique uses the model output to determine how well the supply air mixes with the room air. Thermal comfort is evaluated by monitoring air temperature and velocity in more than 600,000 control volumes that make up the occupied zone of a single room. The room has an acceptable comfort level when more than 70% of the control volumes meet the comfort criteria on both air temperature and velocity. The study shows that high sidewall supply air jets achieve uniform mixing in a room, which is essential for providing acceptable comfort levels. The study also provides information required to optimize overall space conditioning system design in both heating and cooling modes.

Not Available

2012-02-01T23:59:59.000Z

415

Environmental Pollution Air Pollution Dispersion Practical Air Pollution Dispersion  

E-Print Network [OSTI]

Environmental Pollution Air Pollution Dispersion 1 of 5 Practical ­ Air Pollution Dispersion in the lectures how such models can be used to explain observed concentrations of air pollutants in an area and to test `what-if' scenarios for pollution control and reduction. You will use the Gaussian Plume Model

Moncrieff, John B.

416

Artificial films mimic myelin sheath in new research  

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

as model systems in basic research. However, their fragility, instability in air and air-water interfaces and lack of long-term stability in aqueous solution limit their utility....

417

Tennessee Air Quality Act (Tennessee)  

Broader source: Energy.gov [DOE]

The Tennessee Air Quality Act (AQA) delegates the power to maintain air quality in the State to the Department of Environment and Conservation. Under the Department of the Environment and...

418

Fundamentals of Compressed Air Systems  

Broader source: Energy.gov [DOE]

Find out how a compressed air system works and the benefits of optimal compressed air system performance. This initial class demonstrates how to compute the current cost of your plant's compressed...

419

Louisiana Air Control Law (Louisiana)  

Broader source: Energy.gov [DOE]

This law states regulations for air quality control and states the powers and duties of the secretary of environmental quality. It provides information about permits and licenses, air quality...

420

Biogenic Potassium Salt Particles as Seeds for Secondary Organic  

E-Print Network [OSTI]

for the condensation of low- or semi-volatile organic compounds from the atmospheric gas phase or multiphase oxidation is most relevant to the activation of cloud condensation nuclei (6). The aerosol samples were collected The fine particles serving as cloud condensation nuclei in pristine Amazonian rainforest air consist mostly

Note: This page contains sample records for the topic "air particles research" 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

Statistics of particle time-temperature histories.  

SciTech Connect (OSTI)

Particles in non - isothermal turbulent flow are subject to a stochastic environment tha t produces a distribution of particle time - temperature histories. This distribution is a function of the dispersion of the non - isothermal (continuous) gas phase and the distribution of particles relative to that gas phase. In this work we extend the one - dimensional turbulence (ODT) model to predict the joint dispersion of a dispersed particle phase and a continuous phase. The ODT model predicts the turbulent evolution of continuous scalar fields with a model for the cascade of fluctuations to smaller sc ales (the 'triplet map') at a rate that is a function of the fully resolved one - dimens ional velocity field . Stochastic triplet maps also drive Lagrangian particle dispersion with finite Stokes number s including inertial and eddy trajectory - crossing effect s included. Two distinct approaches to this coupling between triplet maps and particle dispersion are developed and implemented along with a hybrid approach. An 'instantaneous' particle displacement model matches the tracer particle limit and provide s an accurate description of particle dispersion. A 'continuous' particle displacement m odel translates triplet maps into a continuous velocity field to which particles respond. Particles can alter the turbulence, and modifications to the stochastic rate expr ession are developed for two - way coupling between particles and the continuous phase. Each aspect of model development is evaluated in canonical flows (homogeneous turbulence, free - shear flows and wall - bounded flows) for which quality measurements are ava ilable. ODT simulations of non - isothermal flows provide statistics for particle heating. These simulations show the significance of accurately predicting the joint statistics of particle and fluid dispersion . Inhomogeneous turbulence coupled with the in fluence of the mean flow fields on particles of varying properties alter s particle dispersion. The joint particle - temperature dispersion leads to a distribution of temperature histories predicted by the ODT . Predictions are shown for the lower moments an d the full distributions of the particle positions, particle - observed gas temperatures and particle temperatures. An analysis of the time scales affecting particle - temperature interactions covers Lagrangian integral time scales based on temperature autoco rrelations, rates of temperature change associated with particle motion relative to the temperature field and rates of diffusional change of temperatures. These latter two time scales have not been investigated previously; they are shown to be strongly in termittent having peaked distributions with long tails. The logarithm of the absolute value of these time scales exhibits a distribution closer to normal. A cknowledgements This work is supported by the Defense Threat Reduction Agency (DTRA) under their Counter - Weapons of Mass Destruction Basic Research Program in the area of Chemical and Biological Agent Defeat under award number HDTRA1 - 11 - 4503I to Sandia National Laboratories. The authors would like to express their appreciation for the guidance provi ded by Dr. Suhithi Peiris to this project and to the Science to Defeat Weapons of Mass Destruction program.

Hewson, John C.; Lignell, David O.; Sun, Guangyuan

2014-10-01T23:59:59.000Z

422

Summary of the particle physics and technology working group  

SciTech Connect (OSTI)

Progress in particle physics has been tightly related to technological advances during the past half century. Progress in technologies has been driven in many cases by the needs of particle physics. Often, these advances have benefited fields beyond particle physics: other scientific fields, medicine, industrial development, and even found commercial applications. The particle physics and technology working group of Snowmass 2001 reviewed leading-edge technologies recently developed or in the need of development for particle physics. The group has identified key areas where technological advances are vital for progress in the field, areas of opportunities where particle physics may play a principle role in fostering progress, and areas where advances in other fields may directly benefit particle physics. The group has also surveyed the technologies specifically developed or enhanced by research in particle physics that benefit other fields and/or society at large.

Stephan Lammel et al.

2002-12-10T23:59:59.000Z

423

A Wireless Sensor Network Air Pollution Monitoring System  

E-Print Network [OSTI]

Sensor networks are currently an active research area mainly due to the potential of their applications. In this paper we investigate the use of Wireless Sensor Networks (WSN) for air pollution monitoring in Mauritius. With the fast growing industrial activities on the island, the problem of air pollution is becoming a major concern for the health of the population. We proposed an innovative system named Wireless Sensor Network Air Pollution Monitoring System (WAPMS) to monitor air pollution in Mauritius through the use of wireless sensors deployed in huge numbers around the island. The proposed system makes use of an Air Quality Index (AQI) which is presently not available in Mauritius. In order to improve the efficiency of WAPMS, we have designed and implemented a new data aggregation algorithm named Recursive Converging Quartiles (RCQ). The algorithm is used to merge data to eliminate duplicates, filter out invalid readings and summarise them into a simpler form which significantly reduce the amount of dat...

Khedo, Kavi K; Mungur, Avinash; Mauritius, University of; Mauritius,; 10.5121/ijwmn.2010.2203

2010-01-01T23:59:59.000Z

424

Are Ventilation Filters Degrading Indoor Air Quality in California Classrooms?  

SciTech Connect (OSTI)

Heating, ventilating, and cooling classrooms in California consume substantial electrical energy. Indoor air quality (IAQ) in classrooms affects studenthealth and performance. In addition to airborne pollutants that are emitted directly by indoor sources and those generated outdoors, secondary pollutants can be formed indoors by chemical reaction of ozone with other chemicals and materials. Filters are used in nearly all classroom heating, ventilation and air?conditioning (HVAC) systems to maintain energy-efficient HVAC performance and improve indoor air quality; however, recent evidence indicates that ozone reactions with filters may, in fact, be a source of secondary pollutants. This project quantitatively evaluated ozone deposition in HVAC filters and byproduct formation, and provided a preliminary assessment of the extent towhich filter systems are degrading indoor air quality. The preliminary information obtained will contribute to the design of subsequent research efforts and the identification of energy efficient solutions that improve indoor air quality in classrooms and the health and performance of students.

Fisk, William J.; Destaillats, H.; Apte, M.G.; Destaillats,, Hugo; Fisk, Michael G. Apte and William J.

2008-10-01T23:59:59.000Z

425

Compressed Air Energy Storage System  

E-Print Network [OSTI]

/expanders are crucial for the economical viability of a Compressed Air Energy Storage (CAES) system such as the

Farzad A. Shirazi; Mohsen Saadat; Bo Yan; Perry Y. Li; Terry W. Simon

426

Making Compressed Air System Decisions  

E-Print Network [OSTI]

spawned an entire industry dedicated to manufacturing equipment designed to remove moisture, lubricant, particulate and vapor contaminants from compressed air. Purification equipment, such as air dryers and filters, are used alone or in combination... to reduce the amount of contaminants in the compressed air to the desired purity. All compressed ESL-IE-96-04-32 Proceedings from the Eighteenth Industrial Energy Technology Conference, Houston, TX, April 17-18, 1996 air purification equipment requires...

Porri, R. E.

427

Oil and Gas Air Heaters  

E-Print Network [OSTI]

, the relation of hot-air temperature, oil or gas consumption and fresh airflow is determined based on energy equilibrium....

Kou, G.; Wang, H.; Zhou, J.

2006-01-01T23:59:59.000Z

428

Review: Integrating Climate, Energy and Air Pollution  

E-Print Network [OSTI]

Climate, Energy and Air Pollution By Gary Bryner with RobertEnergy, and Air Pollution. Cambridge, Massachusetts, The MITClimate, Energy, and Air Pollution provides a well-

Toohey, David E.

2013-01-01T23:59:59.000Z

429

Radionuclide Air Emission Report for 2011  

E-Print Network [OSTI]

LBNL-470E-20Ě1 Radionuclide Air Emission Report for Preparedfor Estimating Fugitive Air Emissions of Radionuclides fromStandards for Hazardous Air Pollutants (Radionuclides),

Wahl, Linnea

2012-01-01T23:59:59.000Z

430

Air Pollution & Health in Rapidly Developing Countries  

E-Print Network [OSTI]

For example, “Air Pollution and Health – Studies in theAssessment of Air Pollution and Health” is illustrative inReview: Air Pollution & Health in Rapidly Developing

Bucher, Scott

2005-01-01T23:59:59.000Z

431

Review of air flow measurement techniques  

SciTech Connect (OSTI)

Airflow measurement techniques are necessary to determine the most basic of indoor air quality questions: ''Is there enough fresh air to provide a healthy environment for the occupants of the building?'' This paper outlines airflow measurement techniques, but it does not make recommendations for techniques that should be used. The airflows that will be discussed are those within a room or zone, those between rooms or zones, such as through doorways (open or closed) or passive vents, those between the building and outdoors, and those through mechanical air distribution systems. Techniques that are highlighted include particle streak velocimetry, hot wire anemometry, fan pressurization (measuring flow at a given pressure), tracer gas, acoustic methods for leak size determination, the Delta Q test to determine duct leakage flows, and flow hood measurements. Because tracer gas techniques are widely used to measure airflow, this topic is broken down into sections as follows: decay, pulse injection, constant injection, constant concentration, passive sampling, and single and multiple gas measurements for multiple zones.

McWilliams, Jennifer

2002-12-01T23:59:59.000Z

432

NBB Enclosed Particle Receiver  

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

rigorous NREL and recipient subcontracting processes. Goal: This project will develop a near-blackbody particle receiver and an integrated fluidized-bed heat exchanger to achieve...

433

Impact of Uncertainties in Hadron Production on Air-Shower Predictions  

E-Print Network [OSTI]

At high energy, cosmic rays can only be studied by measuring the extensive air showers they produce in the atmosphere of the Earth. Although the main features of air showers can be understood within a simple model of successive interactions, detailed simulations and a realistic description of particle production are needed to calculate observables relevant to air shower experiments. Currently hadronic interaction models are the main source of uncertainty of such simulations. We will study the effect of using different hadronic models available in CORSIKA and CONEX on extensive air shower predictions.

T. Pierog; R. Engel; D. Heck

2006-02-08T23:59:59.000Z

434

FLUIDIC: Metal Air Recharged  

ScienceCinema (OSTI)

Fluidic, with the help of ARPA-E funding, has developed and deployed the world's first proven high cycle life metal air battery. Metal air technology, often used in smaller scale devices like hearing aids, has the lowest cost per electron of any rechargeable battery storage in existence. Deploying these batteries for grid reliability is competitive with pumped hydro installations while having the advantages of a small footprint. Fluidic's battery technology allows utilities and other end users to store intermittent energy generated from solar and wind, as well as maintain reliable electrical delivery during power outages. The batteries are manufactured in the US and currently deployed to customers in emerging markets for cell tower reliability. As they continue to add customers, they've gained experience and real world data that will soon be leveraged for US grid reliability.

Friesen, Cody

2014-04-02T23:59:59.000Z

435

Air Observe System  

E-Print Network [OSTI]

This manuscript contains a description and basic principles for observing inaccessible areas using low cost, easily deployed equipment. The basic premise is to suspend a tiny video camera at an altitude of 10 - 200 meters over the area to be surveyed. The TV camera supports at altitude by wind or balloon. The technical challenges regard the means by which the camera is suspended. Such a system may be used by military or police forces or by civil authorities for rescue missions or assessment of natural disasters. The method may be further developed for military applications by integrating the surveillance task with deployment of munitions. Key words: air observer, air suspended system, low altitude video observer.

Alexander Bolonkin

2007-01-10T23:59:59.000Z

436

FLUIDIC: Metal Air Recharged  

SciTech Connect (OSTI)

Fluidic, with the help of ARPA-E funding, has developed and deployed the world's first proven high cycle life metal air battery. Metal air technology, often used in smaller scale devices like hearing aids, has the lowest cost per electron of any rechargeable battery storage in existence. Deploying these batteries for grid reliability is competitive with pumped hydro installations while having the advantages of a small footprint. Fluidic's battery technology allows utilities and other end users to store intermittent energy generated from solar and wind, as well as maintain reliable electrical delivery during power outages. The batteries are manufactured in the US and currently deployed to customers in emerging markets for cell tower reliability. As they continue to add customers, they've gained experience and real world data that will soon be leveraged for US grid reliability.

Friesen, Cody

2014-03-07T23:59:59.000Z

437

Air cathode structure manufacture  

DOE Patents [OSTI]

An improved air cathode structure for use in primary batteries and the like. The cathode structure includes a matrix active layer, a current collector grid on one face of the matrix active layer, and a porous, nonelectrically conductive separator on the opposite face of the matrix active layer, the collector grid and separator being permanently bonded to the matrix active layer. The separator has a preselected porosity providing low IR losses and high resistance to air flow through the matrix active layer to maintain high bubble pressure during operation of the battery. In the illustrated embodiment, the separator was formed of porous polypropylene. A thin hydrophobic film is provided, in the preferred embodiment, on the current collecting metal grid.

Momyer, William R. (Palo Alto, CA); Littauer, Ernest L. (Los Altos Hills, CA)

1985-01-01T23:59:59.000Z

438

Air Pollution Socio-Economic  

E-Print Network [OSTI]

Traffic Air Pollution and Socio-Economic Status Gregory C Pratt PhD Kristie Ellickson PhD #12 · Relationships #12;Living near traffic increases exposure to air pollution and is associated with adverse health exposed to traffic and air pollution. They are also more vulnerable and have an increased risk of adverse

Minnesota, University of

439

The Lagrangian particle dispersion model FLEXPART-WRF VERSION 3.1  

SciTech Connect (OSTI)

The Lagrangian particle dispersion model FLEXPART was originally designed for cal- culating long-range and mesoscale dispersion of air pollutants from point sources, such as after an accident in a nuclear power plant. In the meantime FLEXPART has evolved into a comprehensive tool for atmospheric transport modeling and analysis at different scales. This multiscale need from the modeler community has encouraged new developments in FLEXPART. In this document, we present a version that works with the Weather Research and Forecasting (WRF) mesoscale meteoro- logical model. Simple procedures on how to run FLEXPART-WRF are presented along with special options and features that differ from its predecessor versions. In addition, test case data, the source code and visualization tools are provided to the reader as supplementary material.

Brioude, J.; Arnold, D.; Stohl, A.; Cassiani, M.; Morton, Don; Seibert, P.; Angevine, W. M.; Evan, S.; Dingwell, A.; Fast, Jerome D.; Easter, Richard C.; Pisso, I.; Bukhart, J.; Wotawa, G.

2013-11-01T23:59:59.000Z

440

Grant Reference Grant Holder Research Organisation Project Title NE/I015299/1 Robert Upstill-Goddard Newcastle University Surfactant control of air-sea gas exchange in coastal waters  

E-Print Network [OSTI]

Grant Reference Grant Holder Research Organisation Project Title NE/I015299/1 Robert Upstill of Holocene Monsoon intensity from Central Asia NE/I016414/1 Michael James Lancaster University Quantifying's University of Belfast 14C as a tool to trace terrestrial carbon in a complex lake: implications for food

Note: This page contains sample records for the topic "air particles research" 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.


441

Testing of a refuelable zinc/air bus battery  

SciTech Connect (OSTI)

We report tests of a refuelable zinc/air battery of modular, bipolar-cell design, intended for fleet electric busses and vans. The stack consists of twelve 250-cm{sup 2} cells built of two units: (1) a copper-clad glass-reinforced epoxy board supporting anode and cathode current collectors, and (2) polymer frame providing for air- and electrolyte distribution and zinc fuel storage. The stack was refueled in 4 min. by a hydraulic transfer of zinc particles entrained in solution flow.

Cooper, J.F.; Fleming, D.; Koopman, R.; Hargrove, D.; Maimoni, A.; Peterman, K.

1995-02-22T23:59:59.000Z

442

Research on thermophoretic and inertial aspects of the ash particle deposition on heat exchanger surfaces in coal-fired equipment. Quarterly technical report, September 1, 1986--November 30, 1986  

SciTech Connect (OSTI)

In support of the above mentioned objectives, we have initiated theoretical studies in the following three interrelated areas : (a) Interaction of inertial- and thermophoretic effects in well-defined laminar ``dusty-gas`` flows. (b) Self-regulated sticking and deposit erosion in the simultaneous presence of vapor or submicron ``glue`` (c) Use of packed bed and tube-bank heat transfer and friction correlations to provide the basis for future tube-bank fouling predictions.During the first three months of Grant DE-FG22-86 PC 90756, we have: (1) Designed and initiated construction of the microcombustor particle-laden jet facility described in Section 3.1. (2) Initiated theoretical studies of the interaction of inertial and thermophoretic effects, the role of simultaneous vapor arrival in determining particle sticking and erosion probabilities, and mass transport phenomena in deep tube banks.

Rosner, D.E.

1986-12-01T23:59:59.000Z

443

Air Risk Information Support Center  

SciTech Connect (OSTI)

The Air Risk Information Support Center (Air RISC) was initiated in early 1988 by the US Environmental Protection Agency`s (EPA) Office of Health and Environmental Assessment (OHEA) and the Office of Air Quality Planning and Standards (OAQPS) as a technology transfer effort that would focus on providing information to state and local environmental agencies and to EPA Regional Offices in the areas of health, risk, and exposure assessment for toxic air pollutants. Technical information is fostered and disseminated by Air RISCs three primary activities: (1) a {open_quotes}hotline{close_quotes}, (2) quick turn-around technical assistance projects, and (3) general technical guidance projects. 1 ref., 2 figs.

Shoaf, C.R.; Guth, D.J. [Environmental Protection Agency, Washington, DC (United States)

1990-12-31T23:59:59.000Z

444

Traffic-related air pollution exposures and changes in heart rate variability in Mexico City: A panel study  

E-Print Network [OSTI]

Abstract Background While air pollution exposures have been linked to cardiovascular outcomes, the contribution from acute gas and particle traffic-related pollutants remains unclear. Using a panel study design with repeated ...

Shields, Kyra Naumoff

445

Research on thermophoretic and inertial aspects of ash particle deposition on heat exchanger surfaces in coal-fired equipment. Quarterly technical report No. 6, December 1, 1987--February 28, 1988  

SciTech Connect (OSTI)

During the present reporting period, we have initiated work on (a) the interpretation of our recent data (see QTR5) on deposition rates under the simultaneous influence of inertia and thermophoresis, (b) the possible rate of particle photophoresis in environments characterized by high radiative heat loads. and (c) the influence of particle size distributions on total mass deposition rates. The fruits of these initiatives will be reported in subsequent quarterly technical reports. Here, we focus on our recent theoretical results in the important but previously uncharted area of the relations between particulate deposition mechanisms, deposit microstructure and deposit properties. Experimental verification of some of the most interesting predictions will be the subject of future HTCRE-Lab studies. Recent discussions with fouling engineers have convinced us that despite recent advances in our ability to predict particle deposition rates in convective-diffusion environments, the important connection between resulting deposit properties (effective thermal conductivity permeability, {hor_ellipsis}) and deposition mechanism remain poorly understood and only scarcely studied. Accordingly, as part of this DOE-PETC program we have developed a discrete stochastic model to simulate particulate deposition processes resulting from a combination of deposition mechanisms.

Rosner, D.E.

1988-03-01T23:59:59.000Z

446

Condensation Particle Counter  

E-Print Network [OSTI]

Model 3007 Condensation Particle Counter Operation and Service Manual 1930035, Revision C August 2002 P a r t i c l e I n s t r u m e n t s #12;#12;Model 3007 Condensation Particle Counter Operation............................................................................V 1. UNPACKING AND PARTS IDENTIFICATION..................................1 Unpacking the Condensation

Weber, Rodney

447

Pileup Per Particle Identification  

E-Print Network [OSTI]

We propose a new method for pileup mitigation by implementing "pileup per particle identification" (PUPPI). For each particle we first define a local shape $\\alpha$ which probes the collinear versus soft diffuse structure in the neighborhood of the particle. The former is indicative of particles originating from the hard scatter and the latter of particles originating from pileup interactions. The distribution of $\\alpha$ for charged pileup, assumed as a proxy for all pileup, is used on an event-by-event basis to calculate a weight for each particle. The weights describe the degree to which particles are pileup-like and are used to rescale their four-momenta, superseding the need for jet-based corrections. Furthermore, the algorithm flexibly allows combination with other, possibly experimental, probabilistic information associated with particles such as vertexing and timing performance. We demonstrate the algorithm improves over existing methods by looking at jet $p_T$ and jet mass. We also find an improvement on non-jet quantities like missing transverse energy.

Daniele Bertolini; Philip Harris; Matthew Low; Nhan Tran

2014-09-30T23:59:59.000Z

448

Imaging alpha particle detector  

DOE Patents [OSTI]

A method and apparatus for detecting and imaging alpha particles sources is described. A dielectric coated high voltage electrode and a tungsten wire grid constitute a diode configuration discharge generator for electrons dislodged from atoms or molecules located in between these electrodes when struck by alpha particles from a source to be quantitatively or qualitatively analyzed. A thin polyester film window allows the alpha particles to pass into the gas enclosure and the combination of the glass electrode, grid and window is light transparent such that the details of the source which is imaged with high resolution and sensitivity by the sparks produced can be observed visually as well. The source can be viewed directly, electronically counted or integrated over time using photographic methods. A significant increase in sensitivity over other alpha particle detectors is observed, and the device has very low sensitivity to gamma or beta emissions which might otherwise appear as noise on the alpha particle signal.

Anderson, D.F.

1980-10-29T23:59:59.000Z

449

Imaging alpha particle detector  

DOE Patents [OSTI]

A method and apparatus for detecting and imaging alpha particles sources is described. A conducting coated high voltage electrode (1) and a tungsten wire grid (2) constitute a diode configuration discharge generator for electrons dislodged from atoms or molecules located in between these electrodes when struck by alpha particles from a source (3) to be quantitatively or qualitatively analyzed. A thin polyester film window (4) allows the alpha particles to pass into the gas enclosure and the combination of the glass electrode, grid and window is light transparent such that the details of the source which is imaged with high resolution and sensitivity by the sparks produced can be observed visually as well. The source can be viewed directly, electronically counted or integrated over time using photographic methods. A significant increase in sensitivity over other alpha particle detectors is observed, and the device has very low sensitivity to gamma or beta emissions which might otherwise appear as noise on the alpha particle signal.

Anderson, David F. (Los Alamos, NM)

1985-01-01T23:59:59.000Z

450

Research and Development Conference CIEE Program 1992  

SciTech Connect (OSTI)

CIEE's second annual Research and Development Conference will introduce you to some of the results achieved to date through CIEE-sponsored multiyear research performed in three programs: Building Energy Efficiency, Air Quality Impacts of Energy Efficiency, and End-Use Resource Planning. Results from scoping studies, Director's discretionary research, and exploratory research will also be featured in this report.

Not Available

1992-01-01T23:59:59.000Z

451

Research and Development Conference CIEE Program 1992  

SciTech Connect (OSTI)

CIEE`s second annual Research and Development Conference will introduce you to some of the results achieved to date through CIEE-sponsored multiyear research performed in three programs: Building Energy Efficiency, Air Quality Impacts of Energy Efficiency, and End-Use Resource Planning. Results from scoping studies, Director`s discretionary research, and exploratory research will also be featured in this report.

Not Available

1992-11-01T23:59:59.000Z

452

VOLUME 78, NUMBER 8 P H Y S I C A L R E V I E W L E T T E R S 24 FEBRUARY 1997 Debye Shielding and Particle Correlations in Strongly Coupled Dusty Plasmas  

E-Print Network [OSTI]

in dusty plasma research, while fully aware that the dust particles are strongly coupled, have continued

Otani, Niels F.

453

In-Cab Air Quality of Trucks Air Conditioned and Kept in Electrified Truck Stop  

SciTech Connect (OSTI)

At night, long-haul truck drivers rest inside the cabins of their vehicles. Therefore, the in-cab air quality while air conditioning (A/C) is being provided can be a great concern to the drivers health. The effect of using different A/C methods [truck's A/C, auxiliary power unit (APU), and truck stop electrification (TSE) unit] on in-cab air quality of a heavy-duty diesel vehicle was investigated at an electrified truck stop in the El Paso, Texas, area. The research team measured the in-cabin and the ambient air quality adjacent to the parked diesel truck as well as emissions from the truck and an APU while it was providing A/C. The measured results were compared and analyzed. On the basis of these results, it was concluded that the TSE unit provided better in-cab air quality while supplying A/C. Furthermore, the truck and APU exhaust emissions were measured, and fuel consumption of the truck (while idling) and the APU (during operation) were compared. The results led to the finding that emissions from the APU were less than those from the truck's engine idling, but the APU consumed more fuel than the engine while providing A/C under given conditions.

Lee, Doh-Won [Texas Transportation Institute; Zietsman, Josias [Texas Transportation Institute; Farzaneh, Mohamadreza [Texas Transportation Institute; Li, Wen-Whai [University of Texas, El Paso; Olvera, Hector [University of Texas, El Paso; Storey, John Morse [ORNL; Kranendonk, Laura [ORNL

2009-01-01T23:59:59.000Z

454

Electrocatalysts for Nonaqueous Lithium–Air Batteries:...  

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

Electrocatalysts for Nonaqueous Lithium–Air Batteries: Status, Challenges, and Perspective. Electrocatalysts for Nonaqueous Lithium–Air Batteries: Status, Challenges,...

455

Optimized Fan Control In Variable Air Volume HVAC Systems Using Static Pressure Resets: Strategy Selection and Savings Analysis.  

E-Print Network [OSTI]

??The potential of static pressure reset (SPR) control to save fan energy in variable air volume HVAC systems has been well documented. Current research has… (more)

Kimla, John

2010-01-01T23:59:59.000Z

456

Regenerative air heater  

DOE Patents [OSTI]

A gas-cooled steel skirt is used to support a refractory cored brick matrix and dome structure in a high temperature regenerative air heater useful in magnetohydrodynamic power generation. The steel skirt thermally expands to accommodate the thermal expansion of the dome structure despite substantial temperature differential thereby reducing relative movement between the dome bricks. Gas cooling of the steel skirt allows the structure to operate above its normal temperature during clean-out cycles and also allows for the control of the thermal expansion of the steel skirt.

Hasselquist, Paul B. (Maple Grove, MN); Baldner, Richard (Minnetonka, MN)

1982-01-01T23:59:59.000Z

457

Regenerative air heater  

DOE Patents [OSTI]

A gas-cooled steel skirt is used to support a refractory cored brick matrix and dome structure in a high temperature regenerative air heater useful in magnetohydrodynamic power generation. The steel skirt thermally expands to accommodate the thermal expansion of the dome structure despite substantial temperature differential thereby reducing relative movement between the dome bricks. Gas cooling of the steel skirt allows the structure to operate above its normal temperature during clean-out cycles and also allows for the control of the thermal expansion of the steel skirt.

Hasselquist, P.B.; Baldner, R.

1980-11-26T23:59:59.000Z

458

Hot air drum evaporator  

DOE Patents [OSTI]

An evaporation system for aqueous radioactive waste uses standard 30 and 55 gallon drums. Waste solutions form cascading water sprays as they pass over a number of trays arranged in a vertical stack within a drum. Hot dry air is circulated radially of the drum through the water sprays thereby removing water vapor. The system is encased in concrete to prevent exposure to radioactivity. The use of standard 30 and 55 gallon drums permits an inexpensive compact modular design that is readily disposable, thus eliminating maintenance and radiation build-up problems encountered with conventional evaporation systems.

Black, Roger L. (Idaho Falls, ID)

1981-01-01T23:59:59.000Z

459

A study of hazardous air pollutants at the Tidd PFBC Demonstration Plant  

SciTech Connect (OSTI)

The US Department of Energy (DOE) Clean Coal Technology (CCD Program is a joint effort between government and industry to develop a new generation of coal utilization processes. In 1986, the Ohio Power Company, a subsidiary of American Electric Power (AEP), was awarded cofunding through the CCT program for the Tidd Pressure Fluidized Bed Combustor (PFBC) Demonstration Plant located in Brilliant, Ohio. The Tidd PFBC unit began operation in 1990 and was later selected as a test site for an advanced particle filtration (APF) system designed for hot gas particulate removal. The APF system was sponsored by the DOE Morgantown Energy Technology Center (METC) through their Hot Gas Cleanup Research and Development Program. A complementary goal of the DOE CCT and METC R&D programs has always been to demonstrate the environmental acceptability of these emerging technologies. The Clean Air Act Amendments of 1990 (CAAA) have focused that commitment toward evaluating the fate of hazardous air pollutants (HAPs) associated with advanced coal-based and hot gas cleanup technologies. Radian Corporation was contacted by AEP to perform this assessment of HAPs at the Tidd PFBC demonstration plant. The objective of this study is to assess the major input, process, and emission streams at Plant Tidd for the HAPs identified in Title III of the CAAA. Four flue gas stream locations were tested: ESP inlet, ESP outlet, APF inlet, and APF outlet. Other process streams sampled were raw coal, coal paste, sorbent, bed ash, cyclone ash, individual ESP hopper ash, APF ash, and service water. Samples were analyzed for trace elements, minor and major elements, anions, volatile organic compounds, dioxin/furan compounds, ammonia, cyanide, formaldehyde, and semivolatile organic compounds. The particle size distribution in the ESP inlet and outlet gas streams and collected ash from individual ESP hoppers was also determined.

NONE

1994-10-01T23:59:59.000Z

460

New Air Cleaning Strategies for Reduced Commercial Building Ventilation Energy ? FY11 Final Report  

SciTech Connect (OSTI)

The research carried out in this project focuses on developing novel volatile organic compounds (VOCs) air cleaning technologies needed to enable energy-saving reductions in ventilation rates. we targeted a VOC air cleaning system that could enable a 50% reduction in ventilation rates. In a typical commercial HVAC system that provides a mixture of recirculated and outdoor air, a VOC air cleaner in the supply airstream must have a 15% to 20% VOC removal efficiency to counteract a 50% reduction in outdoor air supply.

Sidheswaran, Meera; Destaillats, Hugo; Cohn, Sebastian; Sullivan, Douglas P.; Fisk, William J.

2011-10-31T23:59:59.000Z

Note: This page contains sample records for the topic "air particles research" 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

Aditya K. Mishra Research Statement  

E-Print Network [OSTI]

key building functions such as lighting, heating, ventilation, and air conditioning. I explore two sustainable. A common theme in my research has been to optimize resource consumption in large focuses on cyber-physical systems (CPSs) related research in smart buildings and smart grids to optimize

Massachusetts at Amherst, University of

462

Indoor Air Quality in 24 California Residences Designed as High-Performance Homes  

SciTech Connect (OSTI)

Today’s high performance green homes are reaching previously unheard of levels of airtightness and are using new materials, technologies and strategies, whose impacts on Indoor Air Quality (IAQ) cannot be fully anticipated from prior studies. This research study used pollutant measurements, home inspections, diagnostic testing and occupant surveys to assess IAQ in 24 new or deeply retrofitted homes designed to be high performance green buildings in California. Although the mechanically vented homes were six times as airtight as non-mechanically ventilated homes (medians of 1.1 and 6.1 ACH50, n=11 and n=8, respectively), their use of mechanical ventilation systems and possibly window operation meant their median air exchange rates were almost the same (0.30 versus 0.32 hr-1, n=8 and n=8, respectively). Pollutant levels were also similar in vented and unvented homes. These similarities were achieved despite numerous observed faults in complex mechanical ventilation systems. More rigorous commissioning is still recommended. Cooking exhaust systems were used inconsistently and several suffered from design flaws. Failure to follow best practices led to IAQ problems in some cases. Ambient nitrogen dioxide standards were exceeded or nearly so in four homes that either used gas ranges with standing pilots, or in Passive House-style homes that used gas cooking burners without venting range hoods. Homes without active particle filtration had particle count concentrations approximately double those in homes with enhanced filtration. The majority of homes reported using low-emitting materials; consistent with this, formaldehyde levels were approximately half those in conventional, new CA homes built before 2008. Emissions of ultrafine particles (with diameters <100 nm) were dramatically lower on induction electric cooktops, compared with either gas or resistance electric models. These results indicate that high performance homes can achieve acceptable and even exceptional IAQ by providing adequate general mechanical ventilation, using low-emitting materials, providing mechanical particle filtration, incorporating well-designed exhaust ventilation for kitchens and bathrooms, and educating occupants to use the kitchen and bath ventilation.

Less, Brennan; Mullen, Nasim; Singer, Brett; Walker, Iain

2015-01-01T23:59:59.000Z

463

Abatement of Air Pollution: Air Pollution Control Equipment and...  

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

contain instructions for the operation and monitoring of air pollution control equipment, as well as comments on procedures in the event of equipment breakdown, failure, and...

464

Synchrotron Radiation at Radio Frequencies from Cosmic Ray Air Showers  

E-Print Network [OSTI]

We review some of the properties of extensive cosmic ray air showers and describe a simple model of the radio-frequency radiation generated by shower electrons and positrons as they bend in the Earth's magnetic field. We perform simulations by calculating the trajectory and radiation of a few thousand charged shower particles. The results are then transformed to predict the strength and polarization of the electromagnetic radiation emitted by the whole shower.

Denis A. Suprun; Peter W. Gorham; Jonathan L. Rosner

2003-06-06T23:59:59.000Z

465

Synchrotron Radiation at Radio Frequencies from Cosmic Ray Air Showers  

E-Print Network [OSTI]

We review some of the properties of extensive cosmic ray air showers and describe a simple model of the radio-frequency radiation generated by shower electrons and positrons as they bend in the Earth's magnetic field. We perform simulations by calculating the trajectory and radiation of a few thousand charged shower particles. The results are then transformed to predict the strength and polarization of the electromagnetic radiation emitted by the whole shower.

Suprun, D A; Rosner, Jonathan L; Suprun, Denis A.; Gorham, Peter W.; Rosner, Jonathan L.

2003-01-01T23:59:59.000Z

466

Accelerators: powering cutting-edge research  

E-Print Network [OSTI]

Accelerators: powering cutting-edge research #12;What is a particle accelerator? Booster ourselves. Particle accelerators are our attempt to turn back the clock and see into the early stages of the Universe. They accelerate everyday charged particles (electrons or protons) to close to the speed of light

Crowther, Paul

467

Experimental particle physics in Finland: Statistics and Overview  

E-Print Network [OSTI]

Experimental particle physics in Finland: Statistics and Overview P. Eerola University of Helsinki, Finland R­ECFA meeting Helsinki, Finland September 5, 1997 #12; History High­energy physics research, analysis of bubble chamber experiments data. ffl 1968 CERN fund by the Particle Physics Committee

Eerola, Paula

468

Trapping and Destruction of Long-Range High-Intensity Optical Filaments by Molecular Quantum Wakes in Air  

E-Print Network [OSTI]

in Air S. Varma, Y.-H. Chen, and H. M. Milchberg Institute for Research in Electronics and Applied in atmospheric air on the long-range filamentary propagation of intense femtosecond laser pulses. In a pump following a pump pulse filamenting in air has a dramatic effect on the propagation of an intense probe pulse

Milchberg, Howard

469

Traceable measurements of the activity concentration in air  

E-Print Network [OSTI]

The nuclear reactions induced by high energetic protons in heavy targets such as UC/sub 2/ and ThC cause a particular, complex radiation protection task at facilities like ISOLDE: the measurement of a mixture of different isotopes of the radioactive noble gas radon and the radon progenies in air. The knowledge of their respective activity concentration is fundamental for exposure assessments. Due to the complex mixture of activity concentrations in air, its precise determination is quite difficult. Therefore, a new procedure for taking reference samples was developed and implemented for the traceable measurement of the activity concentration of radioactive ions (e.g., radon progenies) in air. This technique is combined by measuring alpha -particles with a multi-wire ionization chamber for the parallel on-line determination of the activity concentration of different radon isotopes. (10 refs).

Paul, A; Forkel-Wirth, Doris; Müller, A; Marcos, A

2002-01-01T23:59:59.000Z

470

Quasiparticle and Phonon Transport in Superconducting Particle Detectors  

E-Print Network [OSTI]

For over a decade now there has been much research into the use of superconductors in X-ray, gamma ray and other particle detectors. Detectors based on superconductor-insulator-superconductor(SIS) and superconductor-insulator-normal metal...

Burnell, Gavin

471

The Self-Assembly of Particles with Isotropic Interactions.  

E-Print Network [OSTI]

??In recent years there has been much interest in the self-assembly of materials. Much of this research has been focused on the self-assembly of particles… (more)

Kier, von Konigslow

2012-01-01T23:59:59.000Z

472

Femtosecond laser ablation of brass in air and liquid media  

SciTech Connect (OSTI)

Laser ablation of brass in air, water, and ethanol was investigated using a femtosecond laser system operating at a wavelength of 785 nm and a pulse width less than 130 fs. Scanning electron and optical microscopy were used to study the efficiency and quality of laser ablation in the three ablation media at two different ablation modes. With a liquid layer thickness of 3 mm above the target, ablation rate was found to be higher in water and ethanol than in air. Ablation under water and ethanol showed cleaner surfaces and less debris re-deposition compared to ablation in air. In addition to spherical particles that are normally formed from re-solidified molten material, micro-scale particles with varying morphologies were observed scattered in the ablated structures (craters and grooves) when ablation was conducted under water. The presence of such particles indicates the presence of a non-thermal ablation mechanism that becomes more apparent when ablation is conducted under water.

Shaheen, M. E. [Great Lakes Institute for Environmental Research (GLIER), University of Windsor, Windsor, Ontario N9B 3P4 (Canada) [Great Lakes Institute for Environmental Research (GLIER), University of Windsor, Windsor, Ontario N9B 3P4 (Canada); Department of Physics, Faculty of Sciences, Tanta University, Tanta (Egypt); Gagnon, J. E.; Fryer, B. J. [Great Lakes Institute for Environmental Research (GLIER), University of Windsor, Windsor, Ontario N9B 3P4 (Canada) [Great Lakes Institute for Environmental Research (GLIER), University of Windsor, Windsor, Ontario N9B 3P4 (Canada); Department of Earth and Environmental Sciences, University of Windsor, Windsor, Ontario N9B 3P4 (Canada)

2013-06-07T23:59:59.000Z

473

Elementary particle theory  

SciTech Connect (OSTI)

The present state of the art in elementary particle theory is reviewed. Topics include quantum electrodynamics, weak interactions, electroweak unification, quantum chromodynamics, and grand unified theories. 113 references. (WHK)

Marciano, W.J.

1984-12-01T23:59:59.000Z

474

Particles in complex fluids   

E-Print Network [OSTI]

This thesis describes experimental studies of colloidal particles dispersed in solvents which themselves have phase transitions. One common definition of soft matter is: a material characterized by a mesoscopic length ...

Zand, Daniëlle D. van ’t

2010-01-01T23:59:59.000Z

475

Particle phenomenology and Maldacena  

E-Print Network [OSTI]

A brief review is offered of employing Maldacena's AdS/CFT correspondence in attempting to identify a model which extends to higher energy the standard model of particle phenomenology.

Paul H. Frampton

2008-04-18T23:59:59.000Z

476

aerosol characteristic researching: Topics by E-print Network  

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

as they have significant impacts both on localregional air pollution and global climate. Recent for Aerosol and Cloud Chemistry, Aerodyne Research, Incorporated, Billerica,...

477

Ventilation Effectiveness Research at UT-Typer Lab Houses  

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

Research 30 April 2013 3 Testing Approach Building enclosure and building mechanical systems characterization by measurement of building enclosure air leakage, central...

478

ELEMENTARY PARTICLE INTERACTIONS  

SciTech Connect (OSTI)

The High-Energy Elementary Particle Interactions group at UT during the last three years worked on the following directions and projects: Collider-based Particle Physics; Neutrino Physics, particularly participation in “NO?A”, “Double Chooz”, and “KamLAND” neutrino experiments; and Theory, including Scattering amplitudes, Quark-gluon plasma; Holographic cosmology; Holographic superconductors; Charge density waves; Striped superconductors; and Holographic FFLO states.

EFREMENKO, YURI; HANDLER, THOMAS; KAMYSHKOV, YURI; SIOPSIS, GEORGE; SPANIER, STEFAN

2013-07-30T23:59:59.000Z

479

Air Force Renewable Energy Programs  

Broader source: Energy.gov [DOE]

Presentation covers Air Force Renewable Energy Programs and is given at the Spring 2011 Federal Utility Partnership Working Group (FUPWG) meeting.

480

Oklahoma Clean Air Act (Oklahoma)  

Broader source: Energy.gov [DOE]

This legislation establishes the authority for the Oklahoma Department of Environmental Quality to administer programs to maintain and monitor air quality across Oklahoma. The Department monitors...

Note: This page contains sample records for the topic "air particles research" 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

Nebraska Air Quality Regulations (Nebraska)  

Broader source: Energy.gov [DOE]

These regulations, promulgated by the Department of Environmental Quality, contain provisions pertaining to ambient air quality standards, pollution source operating permits, emissions reporting,...

482

Air Liquide - Biogas & Fuel Cells  

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

Liquide - Biogas & Fuel Cells Hydrogen Energy Biogas Upgrading Technology 12 June 2012 Charlie.Anderson@airliquide.com 2 Air Liquide, world leader in gases for industry,...

483

Factors affecting the concentration of outdoor particles indoors (COPI): Identification of data needs and existing data  

SciTech Connect (OSTI)

The process of characterizing human exposure to particulate matter requires information on both particle concentrations in microenvironments and the time-specific activity budgets of individuals among these microenvironments. Because the average amount of time spent indoors by individuals in the US is estimated to be greater than 75%, accurate characterization of particle concentrations indoors is critical to exposure assessments for the US population. In addition, it is estimated that indoor particle concentrations depend strongly on outdoor concentrations. The spatial and temporal variations of indoor particle concentrations as well as the factors that affect these variations are important to health scientists. For them, knowledge of the factors that control the relationship of indoor particle concentrations to outdoor levels is particularly important. In this report, we identify and evaluate sources of data for those factors that affect the transport to and concentration of outdoor particles in the indoor environment. Concentrations of particles indoors depend upon the fraction of outdoor particles that penetrate through the building shell or are transported via the air handling (HVAC) system, the generation of particles by indoor sources, and the loss mechanisms that occur indoors, such as deposition. To address these issues, we (i) identify and assemble relevant information including the behavior of particles during air leakage, HVAC operations, and particle filtration; (ii) review and evaluate the assembled information to distinguish data that are directly relevant to specific estimates of particle transport from those that are only indirectly useful and (iii) provide a synthesis of the currently available information on building air-leakage parameters and their effect on indoor particle matter concentrations.

Thatcher, Tracy L.; McKone, Thomas E.; Fisk, William J.; Sohn, Michael D.; Delp, Woody W.; Riley, William J.; Sextro, Richard G.

2001-12-01T23:59:59.000Z

484

Single Particle Laser Ablation | EMSL  

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

Single Particle Laser Ablation Single Particle Laser Ablation Leads No leads are available at this time. Effect of Solar Radiation on the Optical Properties and Molecular...

485

An air line carries air at 800 kPa and 80C. An Air line ~ O O C insulated tank initially contains 20C air at a  

E-Print Network [OSTI]

An air line carries air at 800 kPa and 80°C. An Air line ~ O O C insulated tank initially contains 20°C air at a pressure of 90kPa. The valve is opened, and air flows into the tank. Determine the final temperature of the air in the tank and the mass of air that enters the tank if the valve is left

Huang, Haimei

486

Inhalation intake of ambient air pollution in California's South Coast Air Basin  

E-Print Network [OSTI]

the impacts on air pollution and health of urban areaas a proxy for air pollution health effects (Bennett etFuel combustion, air pollution exposure, and health: The

Marshall, Julian D.; Granvold, Patrick W.; Hoats, Abigail S.; McKone, Thomas E.; Deakin, Elizabeth; Nazaroff, William W.

2006-01-01T23:59:59.000Z

487

Study of particle suspensions in microfluidics for the development of optical devices.  

E-Print Network [OSTI]

??The vision of this PhD research project is to create a microfluidic system for controlling the locations of suspended particles in order to form three… (more)

Kayani, A

2012-01-01T23:59:59.000Z

488

E-Print Network 3.0 - accelerated 56fe particles Sample Search...  

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

Search Powered by Explorit Topic List Advanced Search Sample search results for: accelerated 56fe particles Page: << < 1 2 3 4 5 > >> 1 RADIATION RESEARCH 162, 655659 (2004)...

489

Photo of the Week: What Does a Particle Accelerator Have in Common...  

Energy Savers [EERE]

could be widely used in medicine and industry -- particle accelerators are used for cancer research, processing computer chips, and even producing the shrink wrap used to keep...

490

Particle deposition in ventilation ducts: Connectors, bends anddeveloping flow  

SciTech Connect (OSTI)

In ventilation duct flow the turbulent flow profile is commonly disturbed or not fully developed and these conditions are likely to influence particle deposition to duct surfaces. Particle deposition rates at eight S-connectors, in two 90{sup o} duct bends and in two ducts where the turbulent flow profile was not fully developed were measured in a laboratory duct system with both galvanized steel and internally insulated ducts with hydraulic diameters of 15.2 cm. In the steel duct system, experiments with nominal particle diameters of 1, 3, 5, 9 and 16 {micro}m were conducted at each of three nominal air speeds: 2.2, 5.3 and 9.0 m/s. In the insulated duct system, deposition of particles with nominal diameters of 1, 3, 5, 8 and 13 {micro}m was measured at nominal air speeds of 2.2, 5.3 and 8.8 m/s. Fluorescent techniques were used to directly measure the deposition velocities of monodisperse fluorescent particles to duct surfaces. Deposition at S-connectors, in bends and in straight ducts with developing turbulence was often greater than deposition in straight ducts with fully developed turbulence for equal particle sizes, air speeds and duct surface orientations. Deposition rates at all locations were found to increase with an increase in particle size or air speed. High deposition rates at S-connectors resulted from impaction and these rates were nearly independent of the orientation of the S-connector. Deposition rates in the two 90{sup o} bends differed by more than an order of magnitude in some cases, probably because of the difference in turbulence conditions at the bend inlets. In straight steel ducts where the turbulent flow profile was developing, the deposition enhancement relative to fully developed turbulence generally increased with air speed and decreased with downstream distance from the duct inlet. This enhancement was greater at the duct ceiling and wall than at the duct floor. In insulated ducts, deposition enhancement was less pronounced overall than in steel ducts. Trends that were observed in steel ducts were present, but weaker, in insulated ducts.

Sippola, Mark R.; Nazaroff, William W.

2004-03-01T23:59:59.000Z

491

Muon production in extensive air showers and its relation to hadronic interactions  

E-Print Network [OSTI]

In this work, the relation between muon production in extensive air showers and features of hadronic multiparticle production at low energies is studied. Using CORSIKA, we determine typical energies and phase space regions of secondary particles which are important for muon production in extensive air showers and confront the results with existing fixed target measurements. Furthermore possibilities to measure relevant quantities of hadron production in existing and planned accelerator experiments are discussed.

C. Meurer; J. Bluemer; R. Engel; A. Haungs; M. Roth

2005-12-21T23:59:59.000Z

492

Diesel particles -a health hazard 1 Diesel particles  

E-Print Network [OSTI]

Diesel particles - a health hazard 1 Diesel particles - a health hazard #12;The Danish Ecological Council - August 20042 Diesel particles - a health hazard ISBN: 87-89843-61-4 Text by: Christian Ege 33150777 Fax no.: +45 33150971 E-mail: info@ecocouncil.dk www.ecocouncil.dk #12;Diesel particles - a health

493

In-place HEPA (high efficiency, particulate air) filter testing at Hanford: Operating experiences, calibrations, and lessons learned  

SciTech Connect (OSTI)

High Efficiency, Particulate Air (HEPA) Filters provide a minimum of 99.97% removal efficiency for particles greater than or equal to .3 microns in diameter. Each HEPA filter installation at Hanford is, at specified intervals, functionally tested for leaks. The test procedure involves a dioctylphthalate (DOP) smoke generator and a calibrated airborne particle detector. The DOP generator produces smoke of a known quantitative particle size distribution upstream of the filter. The airborne particle detector is first placed upstream, and then downstream of the filter to determine percent penetration. The smoke generator is characterized using a calibrated laser spectrometer, and the particle detector is calibrated using a calibrated picoammeter. 2 refs., 4 figs.

Flores, D.S.; Decelis, D.G.

1989-10-01T23:59:59.000Z

494

ORIGINAL ARTICLE Ambient Air Pollution  

E-Print Network [OSTI]

ORIGINAL ARTICLE Ambient Air Pollution and Respiratory Emergency Department Visits Jennifer L. Peel pollution and respiratory outcomes. More refined assessment has been limited by study size and available air quality data. Methods: Measurements of 5 pollutants (particulate matter PM10 , ozone, nitrogen dioxide NO2

Mulholland, James A.

495

Air Force Enhanced Use Lease  

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

S e r v i c e - E x c e l l e n c e Headquarters U.S. Air Force 1 Air Force Enhanced Use Lease Mr. Brian Brown 16 Oct. 12 I n t e g r i t y - S e r v i c e - E x c e l l e n c e 2...

496

Air Force Renewable Energy Programs  

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

in All We Do" I n t e g r i t y - S e r v i c e - E x c e l l e n c e THINK GREEN, BUILD GREEN, Topics Air Force Energy Use Air Force Facility Energy Center Current RE...

497

Protective supplied breathing air garment  

DOE Patents [OSTI]

A breathing air garment is disclosed for isolating a wearer from hostile environments containing toxins or irritants includes a suit and a separate head protective enclosure or hood engaging a suit collar in sealing attachment. The hood and suit collar are cylindrically shaped and dimensioned to enable the wearer to withdraw his hands from the suit sleeves to perform manual tasks within the hood interior. Breathing air is supplied from an external air line with an air delivery hose attached to the hood interior. The hose feeds air into an annular halo-like fiber-filled plenum having spaced discharge orifices attached to the hood top wall. A plurality of air exhaust/check valves located at the suit extremities cooperate with the hood air delivery system to provide a cooling flow of circulating air from the hood throughout the suit interior. A suit entry seal provided on the suit rear torso panel permits access into the suit and is sealed with an adhesive sealing flap. 17 figs.

Childers, E.L.; Hortenau, E.F. von.

1984-07-10T23:59:59.000Z

498

Low-Flow Liquid Desiccant Air Conditioning: General Guidance and Site Considerations  

SciTech Connect (OSTI)

Dehumidification or latent cooling in buildings is an area of growing interest that has been identified as needing more research and improved technologies for higher performance. Heating, ventilating, and air-conditioning (HVAC) systems typically expend excessive energy by using overcool-and-reheat strategies to dehumidify buildings. These systems first overcool ventilation air to remove moisture and then reheat the air to meet comfort requirements. Another common strategy incorporates solid desiccant rotors that remove moisture from the air more efficiently; however, these systems increase fan energy consumption because of the high airside pressure drop of solid desiccant rotors and can add heat of absorption to the ventilation air. Alternatively, liquid desiccant air-conditioning (LDAC) technology provides an innovative dehumidification solution that: (1) eliminates the need for overcooling and reheating from traditional cooling systems; and (2) avoids the increased fan energy and air heating from solid desiccant rotor systems.

Kozubal, E.; Herrmann, L.; Deru, M.; Clark, J.

2014-09-01T23:59:59.000Z

499

Supertwistors and massive particles  

SciTech Connect (OSTI)

In the (super)twistor formulation of massless (super)particle mechanics, the mass-shell constraint is replaced by a “spin-shell” constraint from which the spin content can be read off. We extend this formalism to massive (super)particles (with N-extended space–time supersymmetry) in three and four space–time dimensions, explaining how the spin-shell constraints are related to spin, and we use it to prove equivalence of the massive N=1 and BPS-saturated N=2 superparticle actions. We also find the supertwistor form of the action for “spinning particles” with N-extended worldline supersymmetry, massless in four dimensions and massive in three dimensions, and we show how this simplifies special features of the N=2 case. -- Highlights: •Spin-shell constraints are related to Poincaré Casimirs. •Twistor form of 4D spinning particle for spin N/2. •Twistor proof of scalar/antisymmetric tensor equivalence for 4D spin 0. •Twistor form of 3D particle with arbitrary spin. •Proof of equivalence of N=1 and N=2 BPS massive 4D superparticles.

Mezincescu, Luca, E-mail: mezincescu@server.physics.miami.edu [Department of Physics, University of Miami, Coral Gables, FL 33124 (United States); Routh, Alasdair J., E-mail: a.j.routh@damtp.cam.ac.uk [DAMTP, CMS, Wilberforce Road, Cambridge CB3 0WA (United Kingdom); Townsend, Paul K., E-mail: p.k.townsend@damtp.cam.ac.uk [DAMTP, CMS, Wilberforce Road, Cambridge CB3 0WA (United Kingdom)

2014-07-15T23:59:59.000Z

500

Big Bang Day: 5 Particles - 3. The Anti-particle  

ScienceCinema (OSTI)

Simon Singh looks at the stories behind the discovery of 5 of the universe's most significant subatomic particles: the Electron, the Quark, the Anti-particle, the Neutrino and the "next particle". 3. The Anti-particle. It appears to be the stuff of science fiction. Associated with every elementary particle is an antiparticle which has the same mass and opposite charge. Should the two meet and combine, the result is annihilation - and a flash of light. Thanks to mysterious processes that occurred after the Big Bang there are a vastly greater number of particles than anti-particles. So how could their elusive existence be proved? At CERN particle physicists are crashing together subatomic particles at incredibly high speeds to create antimatter, which they hope will finally reveal what happened at the precise moment of the Big Bang to create the repertoire of elementary particles and antiparticles in existence today.

None

2011-04-25T23:59:59.000Z