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Note: This page contains sample records for the topic "aerosol chemistry imaging" 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.


1

Molecular Chemistry of Organic Aerosols Through the Application...  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry of Organic Aerosols Through the Application of High Resolution Mass Spectrometry. Molecular Chemistry of Organic Aerosols Through the Application of High Resolution Mass...

2

Atmospheric Aerosol Chemistry Analyzer: Demonstration of feasibility  

SciTech Connect

This is the final report of a three-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). The project objective was to demonstrate the technical feasibility of an Atmospheric Aerosol Chemistry Analyzer (AACA) that will provide a continuous, real-time analysis of the elemental (major, minor and trace) composition of atmospheric aerosols. The AACA concept is based on sampling the atmospheric aerosol through a wet cyclone scrubber that produces an aqueous suspension of the particles. This suspension can then be analyzed for elemental composition by ICP/MS or collected for subsequent analysis by other methods. The key technical challenge was to develop a wet cyclone aerosol sampler suitable for respirable particles found in ambient aerosols. We adapted an ultrasonic nebulizer to a conventional, commercially available, cyclone aerosol sampler and completed collection efficiency tests for the unit, which was shown to efficiently collect particles as small as 0.2 microns. We have completed the necessary basic research and have demonstrated the feasibility of the AACA concept.

Mroz, E.J.; Olivares, J.; Kok, G.

1996-04-01T23:59:59.000Z

3

Atmospheric Aerosol Chemistry, Climate Change, and Air Quality  

NLE Websites -- All DOE Office Websites (Extended Search)

607 Atmospheric Aerosol Chemistry, Climate Change, and Air Quality An EMSL Science Theme Advisory Panel Workshop Workshop Date: January 30, 2013 Prepared for the U.S. Department of...

4

Emission and Chemistry of Organic Carbon in the Gas and Aerosol...  

NLE Websites -- All DOE Office Websites (Extended Search)

and Chemistry of Organic Carbon in the Gas and Aerosol Phase at a Sub-Urban Site Near Mexico City in March 2006 During Emission and Chemistry of Organic Carbon in the Gas and...

5

Modeling aerosol growth by aqueous chemistry in nonprecipitating stratiform cloud  

SciTech Connect

A new microphysics module based on a two-dimensional (2D) joint size distribution function representing both interstitial and cloud particles is developed and applied to studying aerosol processing in non-precipitating stratocumulus clouds. The module is implemented in a three-dimensional dynamical framework of a large-eddy simulation (LES) model and in a trajectory ensemble model (TEM). Both models are used to study the modification of sulfate aerosol by the activation - aqueous chemistry - resuspension cycle in shallow marine stratocumulus clouds. The effect of particle mixing and different size-distribution representations on modeled aerosol processing are studied in a comparison of the LES and TEM simulations with the identical microphysics treatment exposes and a comparison of TEM simulations with a 2D fixed and moving bin microphysics. Particle mixing which is represented in LES and neglected in the TEM leads to the mean relative per particle dry mass change in the TEM simulations being about 30% lower than in analogous subsample of LES domain. Particles in the final LES spectrum are mixed in from different “parcels”, some of which have experienced longer in-cloud residence times than the TEM parcels, all of which originated in the subcloud layer, have. The mean relative per particle dry mass change differs by 14% between TEM simulations with fixed and moving bin microphysics. Finally, the TEM model with the moving bin microphysics is used to evaluate assumptions about liquid water mass partitioning among activated cloud condensation nuclei (CCN) of different dry sizes. These assumptions are used in large-scale models to map the bulk aqueous chemistry sulfate production, which is largely proportional to the liquid water mass, to the changes in aerosol size distribution. It is shown that the commonly used assumptions that the droplet mass is independent of CCN size or that the droplet mass is proportional to the CCN size to the third power do not perform well in the considered case. The explicitly predicted water partitioning indicates that the mean mass of droplets participating in the models aqueous chemistry calculations is proportional to the dry CCN size.

Ovchinnikov, Mikhail; Easter, Richard C.

2010-07-29T23:59:59.000Z

6

Coupled Aerosol-Chemistry–Climate Twentieth-Century Transient Model Investigation: Trends in Short-Lived Species and Climate Responses  

Science Journals Connector (OSTI)

The authors simulate transient twentieth-century climate in the Goddard Institute for Space Studies (GISS) GCM, with aerosol and ozone chemistry fully coupled to one another and to climate including a full dynamic ocean. Aerosols include sulfate, ...

Dorothy Koch; Susanne E. Bauer; Anthony Del Genio; Greg Faluvegi; Joseph R. McConnell; Surabi Menon; Ronald L. Miller; David Rind; Reto Ruedy; Gavin A. Schmidt; Drew Shindell

2011-06-01T23:59:59.000Z

7

Ash aerosol formation from oxy-coal combustion and its relation to ash deposit chemistry  

Science Journals Connector (OSTI)

Abstract Ash aerosol and ash deposit formation during oxy-coal combustion were explored through experiments in a self-sustained 100 kW rated down-fired oxy-fuel combustor. Inlet oxidant conditions consisted of 50% inlet oxygen with CO2 (hereafter denoted as OXY50 conditions). A Berner low pressure impactor (BLPI), a scanning mobility particle sizer (SMPS), and an aerodynamic particle sizer (APS) were used to obtain size segregated ash aerosol samples and to determine the particle size distributions (PSD). A novel surface temperature controlled ash deposition probe system that allowed inside and outside deposits to be separated was used to collect the ash deposits. The ash aerosol \\{PSDs\\} given by the BLPI and those produced by SMPS/APS were consistent with each other. Data suggested that oxy-coal combustion under these conditions did not change the formation mechanisms controlling the bulk ash aerosol composition, but it did increase the formation of ultra-fine particles initially formed through metal vaporization, due to increased vaporization of silicon at the higher combustion temperature. The smaller particles contained within the deposits had higher Si and lower Na and S concentrations under OXY50 conditions than for air combustion. Moreover, the ash aerosol composition for particle sizes less than 2.4 ?m was related to the composition of the inside deposits. A higher Na in the ash aerosol resulted in higher Na in inside deposits with comparable absolute Na concentrations in both those aerosol particles and those inside deposits particles. The contribution of S and Si to the inside deposits showed that S in the vaporization modes together with Si in the ultrafine vaporization mode, contributed significantly to the composition of the inside deposits. These results provided direct evidence that prediction of the chemistry of the initial deposit layer (but not of the bulk deposits) required knowledge of the size segregated chemistry of the ash aerosol.

Zhonghua Zhan; Andrew Fry; Yanwei Zhang; Jost O.L. Wendt

2014-01-01T23:59:59.000Z

8

he Impact of Primary Marine Aerosol on Atmospheric Chemistry, Radiation and Climate: A CCSM Model Development Study  

SciTech Connect

This project examined the potential large-scale influence of marine aerosol cycling on atmospheric chemistry, physics and radiative transfer. Measurements indicate that the size-dependent generation of marine aerosols by wind waves at the ocean surface and the subsequent production and cycling of halogen-radicals are important but poorly constrained processes that influence climate regionally and globally. A reliable capacity to examine the role of marine aerosol in the global-scale atmospheric system requires that the important size-resolved chemical processes be treated explicitly. But the treatment of multiphase chemistry across the breadth of chemical scenarios encountered throughout the atmosphere is sensitive to the initial conditions and the precision of the solution method. This study examined this sensitivity, constrained it using high-resolution laboratory and field measurements, and deployed it in a coupled chemical-microphysical 3-D atmosphere model. First, laboratory measurements of fresh, unreacted marine aerosol were used to formulate a sea-state based marine aerosol source parameterization that captured the initial organic, inorganic, and physical conditions of the aerosol population. Second, a multiphase chemical mechanism, solved using the Max Planck Institute for Chemistryâ??s MECCA (Module Efficiently Calculating the Chemistry of the Atmosphere) system, was benchmarked across a broad set of observed chemical and physical conditions in the marine atmosphere. Using these results, the mechanism was systematically reduced to maximize computational speed. Finally, the mechanism was coupled to the 3-mode modal aerosol version of the NCAR Community Atmosphere Model (CAM v3.6.33). Decadal-scale simulations with CAM v.3.6.33, were run both with and without reactive-halogen chemistry and with and without explicit treatment of particulate organic carbon in the marine aerosol source function. Simulated results were interpreted (1) to evaluate influences of marine aerosol production on the microphysical properties of aerosol populations and clouds over the ocean and the corresponding direct and indirect effects on radiative transfer; (2) atmospheric burdens of reactive halogen species and their impacts on O3, NOx, OH, DMS, and particulate non-sea-salt SO42-; and (3) the global production and influences of marine-derived particulate organic carbon. The model reproduced major characteristics of the marine aerosol system and demonstrated the potential sensitivity of global, decadal-scale climate metrics to multiphase marine-derived components of Earthâ??s troposphere. Due to the combined computational burden of the coupled system, the currently available computational resources were the limiting factor preventing the adequate statistical analysis of the overall impact that multiphase chemistry might have on climate-scale radiative transfer and climate.

Keene, William C. [University of Virginia] [University of Virginia; Long, Michael S. [University of Virginia] [University of Virginia

2013-05-20T23:59:59.000Z

9

Radiotracer Chemistry and Instrumentation for Biological Imaging  

NLE Websites -- All DOE Office Websites (Extended Search)

Plant Imaging Home | Tracer Technology | Application Areas | Publications | People Plant Imaging Home | Tracer Technology | Application Areas | Publications | People The Brookhaven Plant Imaging Program uses non-invasive imaging of molecules tagged with short-lived radioisotopes including carbon-11 (half-life: 20.4 m), nitrogen-13 (half-life: 10 m) and fluorine-18 (half-life 110 m) to contribute directly to the DOE-OBER need for, "Fundamental research on microbes and plants to understand the genetic and biochemical mechanisms that control growth, development, and metabolism, provid(ing) knowledge needed ... to develop new bioenergy crops and improved biofuel production processes that are cost effective and sustainable." Our overarching goal is to investigate how key plant hormones like auxin regulate allocation and metabolism of carbon and nitrogen resources making plants hardier (i.e., stress resistant) and productive in marginal soils.

10

Gaseous Chemistry and Aerosol Mechanism Developments for Version 3.5.1 of the Online Regional Model, WRF-Chem  

SciTech Connect

We have made a number of developments in the regional coupled model WRF-Chem, with the aim of making the model more suitable for prediction of atmospheric composition and of interactions between air quality and weather. We have worked on the European domain, with a particular focus on making the model suitable for the study of night time chemistry and oxidation by the nitrate radical in the UK atmosphere. A reduced form of the Common Reactive Intermediates gas-phase chemical mechanism (CRIv2-R5) has been implemented to enable more explicit simulation of VOC degradation. N2O5 heterogeneous chemistry has been added to the existing sectional MOSAIC aerosol module, and coupled to both the CRIv2-R5 and existing CBM-Z gas phase scheme. Modifications have also been made to the sea-spray aerosol emission representation, allowing the inclusion of primary organic material in sea-spray aerosol. Driven by appropriate emissions, wind fields and chemical boundary conditions, implementation of the different developments is illustrated in order to demonstrate the impact that these changes have in the North-West European domain. These developments are now part of the freely available WRF-Chem distribution.

Archer-Nicholls, Scott; Lowe, Douglas; Utembe, Steve; Allan, James D.; Zaveri, Rahul A.; Fast, Jerome D.; Hodnebrog, Oivind; Denier van der Gon, Hugo; McFiggans, Gordon

2014-11-08T23:59:59.000Z

11

Radiotracer Chemistry and Instrumentation for Biological Imaging  

NLE Websites -- All DOE Office Websites (Extended Search)

Addiction Research at Brookhaven Addiction Research at Brookhaven History: In 1987, Brookhaven National Laboratory became the first research institution to use positron emission tomography (PET) and other medical imaging techniques to investigate the brain mechanisms underlying drug addiction. Addiction Research Press Releases brain volume Drinking Alcohol Shrinks Critical Brain Regions in Genetically Vulnerable Mice - 2/15/2012 Brain scans of two strains of mice imbibing significant quantities of alcohol reveal serious shrinkage in some brain regions - but only in mice lacking a particular type of receptor for dopamine, the brain's "reward" chemical. brain scan Gray Matter in Brain's Control Center Linked to Ability to Process Reward - 11/29/2011 Study is first to show link between structure and function in healthy people, and the impairment of both structure and function in people addicted to cocaine.

12

Chemistry  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry Chemistry1354608000000ChemistrySome of these resources are LANL-only and will require Remote Access.NoQuestions? 667-5809library@lanl.gov Chemistry Some of these...

13

Chemistry of carbonaceous aerosols : studies of atmospheric processing and OH-initiated oxidation  

E-Print Network (OSTI)

Carbonaceous aerosols are among the most prevalent yet least understood constituents of the atmosphere, particularly in urban environments. We have performed analyses of field samples and laboratory studies to probe the ...

Johnson, Kirsten S. (Kirsten Sue)

2008-01-01T23:59:59.000Z

14

Direct measurements of marine aerosols to examine the influence of biological activity, anthropogenic emissions, and secondary processing on particle chemistry  

E-Print Network (OSTI)

from a low-speed marine diesel engine, Aerosol Sci. Tech. ,from a low-speed marine diesel engine, Aerosol Sci. Tech. ,

Gaston, Cassandra Jayne

2012-01-01T23:59:59.000Z

15

Chemistry  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Abdou, Hanan E. - Department of Chemistry, Texas A&M University Agmon, Noam - Institute of Chemistry, Hebrew...

16

Chemistry  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry Print Chemical science at the ALS encompasses a broad range of approaches and specializations, including surfacesinterfaces, catalysis, chemical dynamics (gas-phase...

17

Chemistry  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry Chemistry Chemistry Print Chemical science at the ALS encompasses a broad range of approaches and specializations, including surfaces/interfaces, catalysis, chemical dynamics (gas-phase chemistry), crystallography, and physical chemistry. By one estimate, nearly 80% of all chemical reactions in nature and in human technology take place at boundaries between phases, i.e., at surfaces or interfaces. Atomic- and molecular-scale studies are needed to develop a thorough understanding of the relationships between surface properties and parameters relevant to potential applications and devices. Catalysts play a central role in processes relevant to energy, the environment, and biology. Researchers are working to develop cheaper and smarter catalysts that are fine tuned to accelerate reactions that, for example, drive fuel-refinement, sweep toxins from emissions, or convert starch to sugar.

18

Chemistry & Biology A Near-Infrared BiFC Reporter for In Vivo Imaging  

E-Print Network (OSTI)

Chemistry & Biology Resource A Near-Infrared BiFC Reporter for In Vivo Imaging of Protein of genetically encoded fluorescent probes in near-infrared region for which mammalian tissues are the most transparent. We have used a near- infrared fluorescent protein iRFP engineered from a bacterial phytochrome

Verkhusha, Vladislav V.

19

6, 93519388, 2006 Aerosol-cloud  

E-Print Network (OSTI)

ACPD 6, 9351­9388, 2006 Aerosol-cloud interaction inferred from MODIS and models G. Myhre et al Chemistry and Physics Discussions Aerosol-cloud interaction inferred from MODIS satellite data and global 6, 9351­9388, 2006 Aerosol-cloud interaction inferred from MODIS and models G. Myhre et al. Title

Paris-Sud XI, Université de

20

Tropospheric Aerosol Optical Thickness from the GOCART Model and Comparisons with Satellite and Sun Photometer Measurements  

Science Journals Connector (OSTI)

The Georgia Institute of Technology–Goddard Global Ozone Chemistry Aerosol Radiation and Transport (GOCART) model is used to simulate the aerosol optical thickness ? for major types of tropospheric aerosols including sulfate, dust, organic carbon ...

Mian Chin; Paul Ginoux; Stefan Kinne; Omar Torres; Brent N. Holben; Bryan N. Duncan; Randall V. Martin; Jennifer A. Logan; Akiko Higurashi; Teruyuki Nakajima

2002-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

Inductively coupled plasma chemistry examinations with visible acousto-optic tunable filter hyperspectral imaging{  

E-Print Network (OSTI)

to be a powerful tool for plasma chemistry research. Introduction Inductively coupled plasma optical emission

Duffin, Kirk

22

ARM - Measurement - Aerosol particle size  

NLE Websites -- All DOE Office Websites (Extended Search)

particle size particle size ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Aerosol particle size Linear size (e.g. radius or diameter) of an aerosol particle. Categories Aerosols Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. Field Campaign Instruments AEROSMASSSPEC : Aerosol Mass Spectrometer CPI : Cloud Particle Imager DRI-GND : Desert Research Institute Ground-Based Aerosol Instruments DRUM-AEROSOL : Drum Aerosol Sampler AEROSOL-TOWER-EML : EML Tower based Aerosol Measurements

23

E-Print Network 3.0 - arctic aerosol burden Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

and surface... generally exhibits low aerosol ... Source: National Oceanic and Atmospheric Administration, Pacific Marine Environmental Laboratory, Atmopsheric Chemistry and...

24

E-Print Network 3.0 - aerosol biokinetics concentrations Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

October 4, 2004 Abstract Atmospheric aerosol particles scatter and absorb shortwave (solar) radiation and Source: Brookhaven National Laboratory, Environmental Chemistry...

25

ARM Cloud Aerosol Precipitation Experiment  

NLE Websites -- All DOE Office Websites (Extended Search)

Satellite Observation CAS Cloud Aerosol Spectrometer CCN Cloud Condensation Nuclei CIP Cloud Imaging Probe CPC Condensation Particle Counter CSPHOT Cimel sunphotometer CVI...

26

EMSL: Science: Atmospheric Aerosol Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Atmospheric Aerosol Systems Atmospheric Aerosol Systems atmospheric logo Nighttime enhancement of nitrogen-containing organic compounds, or NOC Observed nighttime enhancement of nitrogen-containing organic compounds, or NOC, showed evidence of being formed by reactions that transform carbonyls into imines. The Atmospheric Aerosol Systems Science Theme focuses on understanding the chemistry, physics and molecular-scale dynamics of aerosols for model parameterization to improve the accuracy of climate model simulations and develop a predictive understanding of climate. By elucidating the role of natural and anthropogenic regional and global climate forcing mechanisms, EMSL can provide DOE and others with the ability to develop cost-effective strategies to monitor, control and mitigate them.

27

aerosols | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

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

28

Formation of ozone and growth of aerosols in young smoke plumes from biomass burning: 1. Lagrangian parcel studies  

E-Print Network (OSTI)

We have developed a new model of the gas- and aerosol-phase chemistry of biomass burning smoke plumes called Aerosol Simulation Program (ASP). Here we use ASP combined with a Lagrangian parcel model to simulate the chemistry ...

Alvarado, Matthew James

29

Spectro-microscopic Measurements of Carbonaceous Aerosol Aging in Central California  

NLE Websites -- All DOE Office Websites (Extended Search)

Spectro-microscopic Measurements of Carbonaceous Spectro-microscopic Measurements of Carbonaceous Aerosol Aging in Central California For original submission and image(s), see ARM Research Highlights http://www.arm.gov/science/highlights/ Research Highlight Atmospheric aerosols affect climate by scattering and absorbing sunlight and by modifying the properties of clouds. However, there are gaps in our understanding of chemical processes involving these airborne particulates, and these gaps contribute significantly to uncertainties in predicting future climate change. Developing more- accurate global climate models requires a more complete understanding of the aerosol lifecycle, from initial particle formation to loss through incorporation into precipitating clouds or dry deposition. In research published in the journal Atmospheric Chemistry and Physics, a team of

30

Radiotracer Chemistry  

NLE Websites -- All DOE Office Websites (Extended Search)

Radiotracer Chemistry Radiotracer Chemistry Radiotracer chemistry is focused on the short lived positron emitters. New radiotracer chemistry and molecular targeting strategies are being developed to increase the complexity and diversity of molecular probes (small molecules and plant hormones) for imaging applications. We emphasize C-11 chemistry because the substitution of stable carbon with carbon-11 provides the opportunity to measure and quantify the distribution and kinetics of physiologically relevant substrates and signaling molecules without altering the biological properties of the parent molecule. Recent accomplishments include the development of miniaturized automated systems for the production of C-11 precursor molecules, the synthesis of C-11 labeled azaleic acid and the radiolabeling of auxin for studies of their movement and metabolism in the whole plant in vivo.

31

Aerosol Cans? -Aerosol cans use a pressurized  

E-Print Network (OSTI)

? - The waste generated in the processing of images/photos contains silver. Silver is a toxic heavy metal the product. Propellants are often flammable and/or toxic. Therefore, never store aerosol cans near ignition of this pamphlet. -Carefully transfer the old paint thinner from the one gallon closable can to the 30 gallon metal

Jia, Songtao

32

Nonequilibrium atmospheric secondary organic aerosol formation and growth  

Science Journals Connector (OSTI)

...Mexico City area are shown...inorganic atmospheric aerosols...2005 ) A large organic aerosol source...photochemical and thermal studies of...Characteristic Group Frequencies—Tables and...particle thermal speed...phase-equilibrium in the atmospheric system: Aerosol...Support, Non-U.S...Determination by plasma-based...implications for atmospheric chemistry...2002) A thermal disso-ciation...

Véronique Perraud; Emily A. Bruns; Michael J. Ezell; Stanley N. Johnson; Yong Yu; M. Lizabeth Alexander; Alla Zelenyuk; Dan Imre; Wayne L. Chang; Donald Dabdub; James F. Pankow; Barbara J. Finlayson-Pitts

2012-01-01T23:59:59.000Z

33

147Chemistry Chemistry (Chem)  

E-Print Network (OSTI)

147Chemistry Chemistry (Chem) Bayly Foundation PROFESSORS FRANCE, PLEVA ASSOCIATE PROFESSORS ALty A student may complete only one of the majors listed in the Department of Chemistry. The major in chemistry leading to a Bachelor of Arts degree requires completion of 44 credits as follows: 1. Chemistry 111, 112

Dresden, Gregory

34

Product Volatilization as a Probe of the Physics and Chemistry of Latent Image Formation in Chemically Amplified Resists,  

Science Journals Connector (OSTI)

Product Volatilization as a Probe of the Physics and Chemistry of Latent Image Formation in Chemically Amplified Resists†,‡ ... The products pass through an all-glass line that uses a high-flow gas stream to extract a small fraction of the product gases through a capillary for analysis. ... Because the rates of each of the sequential steps leading to thickness lossdeprotection, volatilization, and densificationcan be no slower than the overall observed rate of densification, the data in Table 3 provide a lower limit for the rates of volatilization and film densification at 100 °C. ...

W. D. Hinsberg; F. A. Houle; G. M. Poliskie; D. Pearson; M. I. Sanchez; H. Ito

2002-08-15T23:59:59.000Z

35

Laboratory studies of the sensitivity of tropospheric ozone to the chemistry of sea salt aerosol. Final report, September 15, 1993--September 14, 1994  

SciTech Connect

Ozone plays a critical role in both the chemistry and radiation balance of the troposphere. Understanding the factors controlling tropospheric ozone levels is critical to our understanding of a variety of issues in global chemistry and climate change. Chlorine atoms have the potential to contribute significantly to the ozone balance in the free troposphere. They can react directly with ozone or alternately, with organics and may actually lead to the formation of ozone in the presence of sufficient NO. Reactions of alkali halides in sea salt particles are a potential source of atomic chlorine, hence reactions of these alkali halides, especially those producing precursors to atomic chlorine, are of great interest. Finally, the mechanisms, intermediates and products of the Cl-biogenic reactions are unknown; these could serve as unique markers of chlorine atom chemistry in the troposphere, and hence are important to define.

Finlayson-Pitts, B.J.

1994-11-15T23:59:59.000Z

36

ARM - Mobile Aerosol Observing System  

NLE Websites -- All DOE Office Websites (Extended Search)

FacilitiesMobile Aerosol Observing System FacilitiesMobile Aerosol Observing System AMF Information Science Architecture Baseline Instruments AMF1 AMF2 AMF3 Data Operations AMF Fact Sheet Images Contacts AMF Deployments Hyytiälä, Finland, 2014 Manacapuru, Brazil, 2014 Oliktok Point, Alaska, 2013 Los Angeles, California, to Honolulu, Hawaii, 2012 Cape Cod, Massachusetts, 2012 Gan Island, Maldives, 2011 Ganges Valley, India, 2011 Steamboat Springs, Colorado, 2010 Graciosa Island, Azores, 2009-2010 Shouxian, China, 2008 Black Forest, Germany, 2007 Niamey, Niger, 2006 Point Reyes, California, 2005 Mobile Aerosol Observing System Intensive aerosol observations conducted on the campus of Brookhaven National Laboratory on Long Island, New York, using the ARM Mobile Aerosol Observing System. Intensive aerosol observations conducted on the campus of Brookhaven

37

Global observations of desert dust and biomass burning aerosols  

E-Print Network (OSTI)

Global observations of desert dust and biomass burning aerosols Martin de Graaf KNMI #12; Outline · Absorbing Aerosol Index - Theory · Absorbing Aerosol Index - Reality · Biomass burning.6 Biomass burning over Angola, 09 Sep. 2004 Absorbing Aerosol Index PMD image #12;biomass burning ocean

Graaf, Martin de

38

The Proton Transfer Reaction-Mass Spectrometer for Atmospheric Chemistry Tracers of Diesel Exhaust Emissions and Measurements of Trace gas and Aerosol properties.  

E-Print Network (OSTI)

The Proton Transfer Reaction-Mass Spectrometer for Atmospheric Chemistry Tracers of Diesel Exhaust exhaust experiment It has previously been difficult to identify the emissions of diesel exhaust until reactive with organic compounds such as alkanes which are present in diesel exhaust emissions. The reaction

Collins, Gary S.

39

Department of Chemistry & Biochemistry UCLA Chemistry, Biochemistry & Chemistry Material Science  

E-Print Network (OSTI)

Department of Chemistry & Biochemistry UCLA Chemistry, Biochemistry & Chemistry Material Science ...........................................................................................................................................4 Chemistry & Biochemistry Undergraduate Office..............................................................................................6 Majors in Chemistry & Biochemistry

Levine, Alex J.

40

Resolving the internal structure of individual atmospheric aerosol particle by the combination of Atomic Force Microscopy, ESEM–EDX, Raman and ToF–SIMS imaging  

Science Journals Connector (OSTI)

Abstract In this study, internal structures of individual aerosol particles were resolved by using micro-analytical techniques in combination. We demonstrated the practical applicability of the combined use of Atomic Force Microscopy (AFM), Environmental Scanning Electron Microscopy coupled with Energy-Dispersive X-ray analysis (ESEM–EDX), Raman Microspectrometry (RMS) and Time-of-Flight Secondary Ion Mass Spectrometry (ToF–SIMS) to provide morphological, elemental, molecular and outer surface imaging of the same individual airborne particles for the first time. The characterization of single particles collected in the industrial atmosphere influenced by marine air masses demonstrated the physicochemical evolution of the particles in a short time period. The marine-derived particles were mainly encountered as genuine sea salts internally mixed with reacted sea salts such as NaNO3 and liquid NO3? which are covered by an organic thin layer. The particles collected downwind the industrial area were solid particles composed of an internal mixture of iron oxides and of marine-derived particles coated with an organic layer. The formation of these particles is a result of coalescence, agglomeration and drying processes occurring in the atmosphere during the transport of particles in a short time period (~ 15 min). It is demonstrated that the combined use of the different types of spectral and imaging data from the same individual particles in atmospheric aerosol sample provides richer information on their physicochemical characteristics than when those techniques were used alone or when two techniques in combination.

S. Sobanska; G. Falgayrac; J. Rimetz-Planchon; E. Perdrix; C. Brémard; J. Barbillat

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

Do biomass burning aerosols intensify drought in equatorial Asia during El Nińo?  

E-Print Network (OSTI)

fication of drought-induced biomass burning in Indonesiavariability in global biomass burning emissions from 1997 toChemistry and Physics Do biomass burning aerosols intensify

Tosca, M. G; Randerson, J. T; Zender, C. S; Flanner, M. G; Rasch, P. J

2010-01-01T23:59:59.000Z

42

E-Print Network 3.0 - aerosol assisted chemical Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

American Chemical... Element Methods, Aerosols, Air Pollution Modeling, ... Source: Consortium for Fossil Fuel Science, C1 Chemistry Program Collection: Fossil Fuels 36...

43

Assessing regional scale predictions of aerosols, marine stratocumulus, and their interactions during VOCALS-REx using WRF-Chem  

SciTech Connect

This study assesses the ability of the recent chemistry version (v3.3) of the Weather Research and Forecasting (WRF-Chem) model to simulate boundary layer structure, aerosols, stratocumulus clouds, and energy fluxes over the Southeast Pacific Ocean. Measurements from the VAMOS Ocean-Cloud-Atmosphere-Land Study Regional Experiment (VOCALS-REx) and satellite retrievals (i.e., products from the MODerate resolution Imaging Spectroradiometer (MODIS), Clouds and Earth's Radiant Energy System (CERES), and GOES-10) are used for this assessment. The Morrison double-moment microphysics scheme is newly coupled with interactive aerosols in the model. The 31-day (15 October-16 November 2008) WRF-Chem simulation with aerosol-cloud interactions (AERO hereafter) is also compared to a simulation (MET hereafter) with fixed cloud droplet number concentrations in the microphysics scheme and simplified cloud and aerosol treatments in the radiation scheme. The well-simulated aerosol quantities (aerosol number, mass composition and optical properties), and the inclusion of full aerosol-cloud couplings lead to significant improvements in many features of the simulated stratocumulus clouds: cloud optical properties and microphysical properties such as cloud top effective radius, cloud water path, and cloud optical thickness. In addition to accounting for the aerosol direct and semi-direct effects, these improvements feed back to the simulation of boundary-layer characteristics and energy budgets. Particularly, inclusion of interactive aerosols in AERO strengthens the temperature and humidity gradients within the capping inversion layer and lowers the marine boundary layer (MBL) depth by 130 m from that of the MET simulation. These differences are associated with weaker entrainment and stronger mean subsidence at the top of the MBL in AERO. Mean top-of-atmosphere outgoing shortwave fluxes, surface latent heat, and surface downwelling longwave fluxes are in better agreement with observations in AERO, compared to the MET simulation. Nevertheless, biases in some of the simulated meteorological quantities (e.g., MBL temperature and humidity) and aerosol quantities (e.g., underestimations of accumulation mode aerosol number) might affect simulated stratocumulus and energy fluxes over the Southeastern Pacific, and require further investigation. The well-simulated timing and outflow patterns of polluted and clean episodes demonstrate the model's ability to capture daily/synoptic scale variations of aerosol and cloud properties, and suggest that the model is suitable for studying atmospheric processes associated with pollution outflow over the ocean. The overall performance of the regional model in simulating mesoscale clouds and boundary layer properties is encouraging and suggests that reproducing gradients of aerosol and cloud droplet concentrations and coupling cloud-aerosol-radiation processes are important when simulating marine stratocumulus over the Southeast Pacific.

Yang Q.; Lee Y.; Gustafson Jr., W. I.; Fast, J. D.; Wang, H.; Easter, R. C.; Morrison, H.; Chapman, E. G.; Spak, S. N.; Mena-Carrasco, M. A.

2011-12-02T23:59:59.000Z

44

Actinide Chemistry  

NLE Websites -- All DOE Office Websites (Extended Search)

Actinide Chemistry Actinide chemistry serves a critical role in addressing global threats Project Description At Los Alamos, scientists are using actinide analytical chemistry to...

45

BNL | Mobile Aerosol Observing System (MAOS)  

NLE Websites -- All DOE Office Websites (Extended Search)

Mobile Aerosol Observing System (MAOS) Mobile Aerosol Observing System (MAOS) The Mobile Aerosol Observing System (MAOS) is a platform and instrument suite for Intensive Operation Periods (IOPs) to conduct in situ measurements of aerosols and their precursors. MAOS is part of the ARM Climate Research Facility. Physically MAOS is contained in two 20' SeaTainers custom adapted to provide a sheltered laboratory environment for operators and instruments even under harsh conditions. The two structures are designated MAOS-A and MAOS-C for Aerosol and Chemistry respectively. Although independent, with separate data systems, inlets and power distribution, the two structures are normally a single operating unit. The two enclosures comprising MAOS are designed for rapid deployment. All components (except for the Radar Wind Profiler) are transported internally

46

ARM - Surface Aerosol Observing System  

NLE Websites -- All DOE Office Websites (Extended Search)

FacilitiesSurface Aerosol Observing System FacilitiesSurface Aerosol Observing System AMF Information Science Architecture Baseline Instruments AMF1 AMF2 AMF3 Data Operations AMF Fact Sheet Images Contacts AMF Deployments Hyytiälä, Finland, 2014 Manacapuru, Brazil, 2014 Oliktok Point, Alaska, 2013 Los Angeles, California, to Honolulu, Hawaii, 2012 Cape Cod, Massachusetts, 2012 Gan Island, Maldives, 2011 Ganges Valley, India, 2011 Steamboat Springs, Colorado, 2010 Graciosa Island, Azores, 2009-2010 Shouxian, China, 2008 Black Forest, Germany, 2007 Niamey, Niger, 2006 Point Reyes, California, 2005 Surface Aerosol Observing System The ARM Mobile Facility (AMF) is equipped to quantify the interaction between clouds and aerosol particles. A counter-flow virtual impactor (CVI) is used to selectively sample cloud drops. The CVI takes advantage of the

47

ARM - Field Campaign - Aerosol Life Cycle IOP at BNL  

NLE Websites -- All DOE Office Websites (Extended Search)

govCampaignsAerosol Life Cycle IOP at BNL govCampaignsAerosol Life Cycle IOP at BNL Campaign Links Images Wiki 2011 ASR STM Presentation: Sedlacek 2011 ASR STM Presentation: Springston 2010 ASR Fall Meeting: Sedlacek News, June 14, 2011: Next-generation Aerosol-sampling Stations to Head for India Related Campaigns Aerosol Life Cycle: Chemical Ionization Mass Spectrometer - CIMS 2011.07.10, Lee, OSC Aerosol Life Cycle: HR-ToF-AMS 2011.06.15, Zhang, OSC Aerosol Life Cycle: ARM Mobile Facility 2 Aerosol Observing System 2011.06.15, Sedlacek, OSC Aerosol Life Cycle: UV-APS and Nano-SMPS 2011.06.10, Hallar, OSC Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Aerosol Life Cycle IOP at BNL 2011.06.01 - 2011.08.31 Lead Scientist : Arthur Sedlacek For data sets, see below.

48

148 Chemistry/Chinese Chemistry 347 (3)--Advanced Organic Chemistry  

E-Print Network (OSTI)

148 Chemistry/Chinese Chemistry 347 (3)--Advanced Organic Chemistry Prerequisite: Chemistry 242,syntheticmethodology,mod- ernsyntheticreactions,protectinggroups,naturalprod- uctssynthesis,andcombinatorialchemistry.France. Spring Chemistry 350 (3)--Advanced Inorganic Chemistry Prerequisites: Chemistry 250, 252, and 262. Anintro

Dresden, Gregory

49

HEMISPHERIC-SCALE CHEMICAL AND MICROPHYSICAL AEROSOL MODEL  

E-Print Network (OSTI)

Dignon Bates/Lamb DRY DEPOSITION Wesely WET DEPOSITION Berkowitz/Hales CHEMISTRY Gas Aqueous SO2 + OH [OH dependent Size Resolved Wesely WET DEPOSITION Berkowitz/Hales CHEMISTRY Gas Phase Aqueous Phase SO2 AEROSOL;Anthropogenic Anthropogenic #12;by Production Mechanism Gas phase Aqueous Phase Primary October 15, 1986 at 6 UT

Schwartz, Stephen E.

50

AT631, Spring 2011 Introduction to Atmospheric Aerosols  

E-Print Network (OSTI)

. Pandis, Atmospheric Chemistry and Physics: From Air Pollution to Climate Change, Wiley-Interscience, 2006AT631, Spring 2011 Introduction to Atmospheric Aerosols Tuesdays 9-9:50 AM, 212B ACRC Wednesdays, Lab, 1-4 PM, ACB 10 Instructor: Prof. Sonia Kreidenweis Atmospheric Chemistry Bldg., Room 19 491

51

Organofluorine chemistry  

Science Journals Connector (OSTI)

...young scientists give their visions of the future III. Chemistry and biological physics compiled by J. M. T. Thompson Organofluorine chemistry Graham Sandford Department of Chemistry, University of Durham, , South Road, Durham DH1 3LE...

2000-01-01T23:59:59.000Z

52

CLUSTER CHEMISTRY  

E-Print Network (OSTI)

Advanced Inorganic Chemistry, 11 Wiley Huetterties and C. M.Submitted to the Journal of Organometallic ChemistryCLUSTER CHEMISTRY Earl L. Muetterties TWO-WEEK LOAN COPY May

Muetterties, Earl L.

2013-01-01T23:59:59.000Z

53

Actinide Chemistry  

NLE Websites -- All DOE Office Websites (Extended Search)

Actinide Chemistry Actinide Chemistry Actinide Chemistry Research into alternative forms of energy, especially energy security, is one of the major national security imperatives of this century. Get Expertise David Gallimore Actinide Analytical Chemistry Email Rebecca Chamberlin Actinide Analytical Chemistry Email Josh Smith Chemistry Communications Email Along with the lanthanides, they are often called "the f-elements" because they have valence electrons in the f shell. Actinide chemistry serves a critical role in addressing global threats Project Description At Los Alamos, scientists are using actinide analytical chemistry to identify and quantify the chemical and isotopic composition of materials. Since the Manhattan Project, such work has supported the Laboratory's

54

Atmospheric Chemistry  

NLE Websites -- All DOE Office Websites (Extended Search)

competencies Atmospheric Chemistry Atmospheric Chemistry is the study of the composition of the atmosphere, the sources and fates of gases and particles in air, and changes induced...

55

Interfacial Chemistry  

NLE Websites -- All DOE Office Websites (Extended Search)

Interfacial Chemistry The organization's research focus, among other things, is to develop new analytical methods that advance the science of surface chemistry and contribute to...

56

Imaging  

NLE Websites -- All DOE Office Websites (Extended Search)

Imaging Print Imaging Print The wavelengths of soft x-ray photons (1-15 nm) are very well matched to the creation of "nanoscopes" capable of probing the interior structure of biological cells and inorganic mesoscopic systems.Topics addressed by soft x-ray imaging techniques include cell biology, nanomagnetism, environmental science, and polymers. The tunability of synchrotron radiation is absolutely essential for the creation of contrast mechanisms. Cell biology CAT scans are performed in the "water window" (300-500 eV). Nanomagnetism studies require the energy range characteristic of iron, cobalt, and nickel (600-900 eV). Mid- and far-infrared (energies below 1 eV) microprobes using synchrotron radiation are being used to address problems such as chemistry in biological tissues, chemical identification and molecular conformation, environmental biodegradation, mineral phases in geological and astronomical specimens, and electronic properties of novel materials. Infrared synchrotron radiation is focused through, or reflected from, a small spot on the specimen and then analyzed using a spectrometer. Tuning to characteristic vibrational frequencies serves as a sensitive fingerprint for molecular species. Images of the various species are built up by raster scanning the specimen through the small illuminated spot.

57

CLUSTER CHEMISTRY  

SciTech Connect

Metal cluster chemistry is one of the most rapidly developing areas of inorganic and organometallic chemistry. Prior to 1960 only a few metal clusters were well characterized. However, shortly after the early development of boron cluster chemistry, the field of metal cluster chemistry began to grow at a very rapid rate and a structural and a qualitative theoretical understanding of clusters came quickly. Analyzed here is the chemistry and the general significance of clusters with particular emphasis on the cluster research within my group. The importance of coordinately unsaturated, very reactive metal clusters is the major subject of discussion.

Muetterties, Earl L.

1980-05-01T23:59:59.000Z

58

ARM - Field Campaign - MArine Stratus Radiation Aerosol and Drizzle  

NLE Websites -- All DOE Office Websites (Extended Search)

govCampaignsMArine Stratus Radiation Aerosol and Drizzle (MASRAD) IOP govCampaignsMArine Stratus Radiation Aerosol and Drizzle (MASRAD) IOP Campaign Links Science Plan AMF Point Reyes Website AMF Point Reyes Data Plots Related Campaigns MASRAD: Pt. Reyes Stratus Cloud and Drizzle Study 2005.07.07, Coulter, AMF MASRAD: Cloud Condensate Nuclei Chemistry Measurements 2005.07.01, Berkowitz, AMF MASRAD - Aerosol Optical Properties 2005.06.29, Strawa, AMF MASRAD:Sub-Micron Aerosol Measurements 2005.06.20, Wang, AMF MASRAD: Cloud Study from the 2NFOV at Pt. Reyes Field Campaign 2005.06.02, Wiscombe, AMF Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : MArine Stratus Radiation Aerosol and Drizzle (MASRAD) IOP 2005.03.14 - 2005.09.14 Website : http://www.arm.gov/sites/amf/pye/ Lead Scientist : Mark Miller

59

Direct Insertion of MODIS Radiances in a Global Aerosol Transport Model CLARK WEAVER,* ARLINDO DA SILVA, MIAN CHIN,# PAUL GINOUX,@ OLEG DUBOVIK,&,@@  

E-Print Network (OSTI)

is directly inserted into the Goddard Chemistry and Aerosol Radiation Transport model (GOCART), which aerosol radiative forcing in the thermody- namic equation of GCMs, 3) to account for the reduc- tionDirect Insertion of MODIS Radiances in a Global Aerosol Transport Model CLARK WEAVER,* ARLINDO DA

Chin, Mian

60

Direct radiative effect of aerosols emitted by transport from road, shipping and  

E-Print Network (OSTI)

Direct radiative effect of aerosols emitted by transport from road, shipping and aviation 1234567.0 License. Atmospheric Chemistry and Physics Direct radiative effect of aerosols emitted by transport: from road, shipping and aviation Y. Balkanski1, G. Myhre2,3, M. Gauss2,*, G. R�adel4, E. J. Highwood4, and K

Wirosoetisno, Djoko

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

Formation of Ozone and Growth of Aerosols in Young Smoke Plumes from Biomass Burning  

E-Print Network (OSTI)

Physics and Chemistry Abstract The combustion of biomass is a major source of atmospheric trace gasesFormation of Ozone and Growth of Aerosols in Young Smoke Plumes from Biomass Burning by Matthew and Planetary Sciences #12;Formation of Ozone and Growth of Aerosols in Young Smoke Plumes from Biomass Burning

62

Near-Edge X-ray Absorption Fine Structure Imaging of Spherical and Flat Counterfaces of Ultrananocrystalline Diamond Tribological Contacts: A Correlation of Surface Chemistry and Friction  

SciTech Connect

A recently installed synchrotron radiation near-edge X-ray absorption fine structure (NEXAFS) full field imaging electron spectrometer was used to spatially resolve the chemical changes of both counterfaces from an ultra-nanocrystalline diamond (UNCD) tribological contact. A silicon flat and Si{sub 3}N{sub 4} sphere were both coated with UNCD, and employed to form two wear tracks on the flat in a linear reciprocating tribometer. The first wear track was produced using a new, unconditioned sphere whose surface was thus conditioned during this first experiment. This led to faster run-in and lower friction when producing a second wear track using the conditioned sphere. The large depth of field of the magnetically guided NEXAFS imaging detector enabled rapid, large area spectromicroscopic imaging of both the spherical and flat surfaces. Laterally resolved NEXAFS data from the tribological contact area revealed that both substrates had an as-grown surface layer that contained a higher fraction of sp{sup 2}-bonded carbon and oxygen which was mechanically removed. Unlike the flat, the film on the sphere showed evidence of having graphitic character, both before and after sliding. These results show that the graphitic character of the sphere is not solely responsible for low friction and short run-in. Rather, conditioning the sphere, likely by removing asperities and passivating dangling bonds, leads to lower friction with less chemical modification of the substrate in subsequent tests. The new NEXAFS imaging spectroscopy detector enabled a more complete understanding of the tribological phenomena by imaging, for the first time, the surface chemistry of the spherical counterface which had been in continual contact during wear track formation.

A Konicek; C Jaye; M Hamilton; W Sawyer; D Fischer; R Carpick

2011-12-31T23:59:59.000Z

63

Chemical Imaging Analysis of Environmental Particles Using the Focused Ion Beam/Scanning Electron Microscopy Technique: Microanalysis Insights into Atmospheric Chemistry of Fly Ash  

SciTech Connect

Airborne fly ash from coal combustion may represent a source of bioavailable iron (Fe) in the open ocean. However, few studies have been made focusing on Fe speciation and distribution in coal fly ash. In this study, chemical imaging of fly ash has been performed using a dual-beam FIB/SEM (focused ion beam/scanning electron microscope) system for a better understanding of how simulated atmospheric processing modify the morphology, chemical compositions and element distributions of individual particles. A novel approach has been applied for cross-sectioning of fly ash specimen with a FIB in order to explore element distribution within the interior of individual particles. Our results indicate that simulated atmospheric processing causes disintegration of aluminosilicate glass, a dominant material in fly ash particles. Aluminosilicate-phase Fe in the inner core of fly ash particles is more easily mobilized compared with oxide-phase Fe present as surface aggregates on fly ash spheres. Fe release behavior depends strongly on Fe speciation in aerosol particles. The approach for preparation of cross-sectioned specimen described here opens new opportunities for particle microanalysis, particular with respect to inorganic refractive materials like fly ash and mineral dust.

Chen, Haihan; Grassian, Vicki H.; Saraf, Laxmikant V.; Laskin, Alexander

2013-01-21T23:59:59.000Z

64

Chemistry | ornl.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Home | Science & Discovery | Supercomputing and Computation | Research Areas | Chemistry SHARE Chemistry Computational Chemistry at ORNL uses principles of computer science...

65

Composition and Reactions of Atmospheric Aerosol Particles  

NLE Websites -- All DOE Office Websites (Extended Search)

Composition and Reactions of Composition and Reactions of Atmospheric Aerosol Particles Composition and Reactions of Atmospheric Aerosol Particles Print Wednesday, 29 June 2005 00:00 Microscopic aerosol particles in the atmosphere contain carbonaceous components from mineral dust and combustion emissions released from around the world. How long these tiny particles remain in the atmosphere can have a huge impact on the global climate. Measurements based on high-resolution scanning transmission x-ray images obtained at the ALS have revealed chemical reactions on and in atmospheric aerosol particles that caused particle growth while changing organic composition by 13 to 24% per day, an oxidation rate significantly slower than is currently used in atmospheric models. Since oxidation has a strong effect on particle lifetime in the atmosphere, these results will help climate scientists refine the computer models used to predict climate change.

66

Composition and Reactions of Atmospheric Aerosol Particles  

NLE Websites -- All DOE Office Websites (Extended Search)

Composition and Reactions of Atmospheric Aerosol Particles Print Composition and Reactions of Atmospheric Aerosol Particles Print Microscopic aerosol particles in the atmosphere contain carbonaceous components from mineral dust and combustion emissions released from around the world. How long these tiny particles remain in the atmosphere can have a huge impact on the global climate. Measurements based on high-resolution scanning transmission x-ray images obtained at the ALS have revealed chemical reactions on and in atmospheric aerosol particles that caused particle growth while changing organic composition by 13 to 24% per day, an oxidation rate significantly slower than is currently used in atmospheric models. Since oxidation has a strong effect on particle lifetime in the atmosphere, these results will help climate scientists refine the computer models used to predict climate change.

67

Composition and Reactions of Atmospheric Aerosol Particles  

NLE Websites -- All DOE Office Websites (Extended Search)

Composition and Reactions of Atmospheric Aerosol Particles Print Composition and Reactions of Atmospheric Aerosol Particles Print Microscopic aerosol particles in the atmosphere contain carbonaceous components from mineral dust and combustion emissions released from around the world. How long these tiny particles remain in the atmosphere can have a huge impact on the global climate. Measurements based on high-resolution scanning transmission x-ray images obtained at the ALS have revealed chemical reactions on and in atmospheric aerosol particles that caused particle growth while changing organic composition by 13 to 24% per day, an oxidation rate significantly slower than is currently used in atmospheric models. Since oxidation has a strong effect on particle lifetime in the atmosphere, these results will help climate scientists refine the computer models used to predict climate change.

68

Improved solid aerosol generator  

DOE Patents (OSTI)

An improved solid aerosol generator used to produce a gas borne stream of dry, solid particles of predetermined size and concentration. The improved solid aerosol generator nebulizes a feed solution of known concentration with a flow of preheated gas and dries the resultant wet heated aerosol in a grounded, conical heating chamber, achieving high recovery and flow rates. 2 figs.

Prescott, D.S.; Schober, R.K.; Beller, J.

1988-07-19T23:59:59.000Z

69

Organophosphorus chemistry  

E-Print Network (OSTI)

2087 Organophosphorus chemistry Paul R. Hanson Editorial Open Access Address: Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS 66045-7582, USA Email: Paul R. Hanson - phanson@ku.edu. Keywords: organophosphorus... Beilstein J. Org. Chem. 2014, 10, 2087–2088. doi:10.3762/bjoc.10.217 Received: 28 July 2014 Accepted: 06 August 2014 Published: 04 September 2014 This article is part of the Thematic Series "Organophosphorus chemistry" Guest Editor: P. R. Hanson © 2014...

Hanson, Paul R.

2014-09-04T23:59:59.000Z

70

The Aerosol Modeling Testbed: A community tool to objectively evaluate aerosol process modules  

SciTech Connect

This study describes a new modeling paradigm that significantly advances how the third activity is conducted while also fully exploiting data and findings from the first two activities. The Aerosol Modeling Testbed (AMT) is a computational framework for the atmospheric sciences community that streamlines the process of testing and evaluating aerosol process modules over a wide range of spatial and temporal scales. The AMT consists of a fully-coupled meteorology-chemistry-aerosol model, and a suite of tools to evaluate the performance of aerosol process modules via comparison with a wide range of field measurements. The philosophy of the AMT is to systematically and objectively evaluate aerosol process modules over local to regional spatial scales that are compatible with most field campaigns measurement strategies. The performance of new treatments can then be quantified and compared to existing treatments before they are incorporated into regional and global climate models. Since the AMT is a community tool, it also provides a means of enhancing collaboration and coordination among aerosol modelers.

Fast, Jerome D.; Gustafson, William I.; Chapman, Elaine G.; Easter, Richard C.; Rishel, Jeremy P.; Zaveri, Rahul A.; Grell, Georg; Barth, Mary

2011-03-02T23:59:59.000Z

71

E-Print Network 3.0 - aerosol size classification Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Imaging Spectroradiometer observations: Top-of-atmosphere albedo change Summary: Panel on Climate Change, 2007. Aerosol particles have a variety of shapes, sizes, and...

72

Modeling aerosols and their interactions with shallow cumuli during the 2007 CHAPS field study  

SciTech Connect

The Weather Research and Forecasting model coupled with chemistry (WRF-Chem) is used to simulate relationships between aerosols and clouds in the vicinity of Oklahoma City during the June 2007 Cumulus Humilis Aerosol Processing Study (CHAPS). The regional scale simulation completed using 2 km horizontal grid spacing evaluates four important relationships between aerosols and shallow cumulus clouds observed during CHAPS. First, the model reproduces the trends of higher nitrate volume fractions in cloud droplet residuals compared to interstitial non-activated aerosols, as measured using the Aerosol Mass Spectrometer. Comparing simulations with cloud chemistry turned on and off, we show that nitric acid vapor uptake by cloud droplets explains the higher nitrate content of cloud droplet residuals. Second, as documented using an offline code, both aerosol water and other inorganics (OIN), which are related to dust and crustal emissions, significantly affect predicted aerosol optical properties. Reducing the OIN content of wet aerosols by 50% significantly improves agreement of model predictions with measurements of aerosol optical properties. Third, the simulated hygroscopicity of aerosols is too high as compared to their hygroscopicity derived from cloud condensation nuclei and particle size distribution measurements, indicating uncertainties associated with simulating size-dependent chemical composition and treatment of aerosol mixing state within the model. Fourth, the model reasonably represents the observations of the first aerosol indirect effect where pollutants in the vicinity of Oklahoma City increase cloud droplet number concentrations and decrease the droplet effective radius. While previous studies have often focused on cloud-aerosol interactions in stratiform and deep convective clouds, this study highlights the ability of regional-scale models to represent some of the important aspects of cloud-aerosol interactions associated with fields of short-lived shallow cumuli.

Shrivastava, ManishKumar B.; Berg, Larry K.; Fast, Jerome D.; Easter, Richard C.; Laskin, Alexander; Chapman, Elaine G.; Gustafson, William I.; Liu, Ying; Berkowitz, Carl M.

2013-02-07T23:59:59.000Z

73

ORGANIC CHEMISTRY UCLA Organic Chemistry Faculty  

E-Print Network (OSTI)

ORGANIC CHEMISTRY UCLA Organic Chemistry Faculty perform research in molecular machines, exotic CHEMISTRY FACULTY RESEARCH INTERESTS Anne M. Andrews, Professor-in-Residence: Understanding how areas of interest include cross- coupling reactions, green chemistry, heterocycle synthesis, and natural

Levine, Alex J.

74

Development and Characterization of a Thermodenuder for Aerosol Volatility Measurements  

SciTech Connect

This SBIR Phase I project addressed the critical need for improved characterization of carbonaceous aerosol species in the atmosphere. The proposed work focused on the development of a thermodenuder (TD) system capable of systematically measuring volatility profiles of primary and secondary organic aerosol species and providing insight into the effects of absorbing and nonabsorbing organic coatings on particle absorption properties. This work provided the fundamental framework for the generation of essential information needed for improved predictions of ambient aerosol loadings and radiative properties by atmospheric chemistry models. As part of this work, Aerodyne Research, Inc. (ARI) continued to develop and test, with the final objective of commercialization, an improved thermodenuder system that can be used in series with any aerosol instrument or suite of instruments (e.g., aerosol mass spectrometers-AMS, scanning mobility particle sizers-SMPS, photoacoustic absorption spectrometers-PAS, etc.) to obtain aerosol chemical, physical, and optical properties as a function of particle volatility. In particular, we provided the proof of concept for the direct coupling of our improved TD design with a full microphysical model to obtain volatility profiles for different organic aerosol components and to allow for meaningful comparisons between different TD-derived aerosol measurements. In a TD, particles are passed through a heated zone and a denuding (activated charcoal) zone to remove semi-volatile material. Changes in particle size, number concentration, optical absorption, and chemical composition are subsequently detected with aerosol instrumentation. The aerosol volatility profiles provided by the TD will strengthen organic aerosol emission inventories, provide further insight into secondary aerosol formation mechanisms, and provide an important measure of particle absorption (including brown carbon contributions and identification, and absorption enhancements due to coatings on soot particles). The successfully completed Phase I project included construction of a prototype design for the TD with detailed physical modeling, testing with laboratory and ambient aerosol particles, and the initiation of a detailed microphysical model of the aerosol particles passing through the TD to extract vapor pressure distributions. The objective of the microphysical model is to derive vapor pressure distributions (i.e. vapor pressure ranges, including single chemical compounds, mixtures of known compounds, and complex ‘real-world’ aerosols, such as SOA, and soot particles with absorbing and nonabsorbing coatings) from TD measurements of changes in particle size, mass, and chemical composition for known TD temperatures and flow rates (i.e. residence times). The proposed Phase II project was designed to optimize several TD systems for different instrument applications and to combine the hardware and modeling into a robust package for commercial sales.

Dr. Timothy Onasch

2009-09-09T23:59:59.000Z

75

PNNL-MILAGRO Aerosol Modeling in Mexico | Open Energy Information  

Open Energy Info (EERE)

PNNL-MILAGRO Aerosol Modeling in Mexico PNNL-MILAGRO Aerosol Modeling in Mexico Jump to: navigation, search Name PNNL-MILAGRO Aerosol Modeling in Mexico Agency/Company /Organization Pacific Northwest National Laboratory Topics Co-benefits assessment Resource Type Dataset, Maps Website http://www.pnl.gov/atmospheric Country Mexico UN Region Latin America and the Caribbean References PNNL-MILAGRO Aerosol Modeling in Mexico[1] "MILGARO surface data includes measurements from Supersites, RAMA (Red Automatica de Monitoreo Atmosferico), Mobile, and Other sites. A description of each site type follows along with a plot of the site locations. Supersites Supersites provide detailed atmospheric chemistry and meteorological measurements; these sites included: T0 (located at the Instituto Mexicano

76

ARM - Measurement - Aerosol absorption  

NLE Websites -- All DOE Office Websites (Extended Search)

absorption absorption ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Aerosol absorption The process in which radiation energy is retained by aerosols. Categories Aerosols Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AOS : Aerosol Observing System CSPHOT : Cimel Sunphotometer IAP : In-situ Aerosol Profiles (Cessna Aerosol Flights) PSAP : Particle Soot Absorption Photometer PASS : Photoacoustic Soot Spectrometer External Instruments OMI : Ozone Monitoring Instrument

77

ARM - Measurement - Aerosol concentration  

NLE Websites -- All DOE Office Websites (Extended Search)

concentration concentration ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Aerosol concentration A measure of the amount of aerosol particles (e.g. number, mass, volume) per unit volume of air. Categories Aerosols Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AOS : Aerosol Observing System CSPHOT : Cimel Sunphotometer CPC : Condensation Particle Counter IAP : In-situ Aerosol Profiles (Cessna Aerosol Flights) TDMA : Tandem Differential Mobility Analyzer

78

Carbonaceous Aerosols and Radiative...  

NLE Websites -- All DOE Office Websites (Extended Search)

and absorption of light by aerosols. At the ground sites, a new Humidigraph, a Cloud Condensation Nuclei Counter, a Scanning Mobility Particle Sizer, and an upgraded 915-MHz...

79

AVIRIS Canopy Chemistry Data (ACCP)  

NLE Websites -- All DOE Office Websites (Extended Search)

Canopy Chemistry Data Canopy Chemistry Data The ORNL DAAC has added a data set to its holdings from the Accelerated Canopy Chemistry Program (ACCP). The new data set is entitled "Site AVIRIS Images, 1992 (ACCP)." ACCP was an investigation to determine the theoretical and empirical basis for remote sensing of nitrogen and lignin concentrations in vegetation canopies of various ecosystems in the United States. Ten AVIRIS image scenes over selected ACCP sites were acquired in 1992. Pixels that coincided with ACCP field sites were extracted, and surface reflectance values were calculated. The purpose of the data set was to measure spectra of naturally occurring canopies where the chemical constituents were measured. The ORNL DAAC also holds ACCP data related to leaf chemistry, seedling

80

DOE research on atmospheric aerosols  

SciTech Connect

Atmospheric aerosols are the subject of a significant component of research within DOE`s environmental research activities, mainly under two programs within the Department`s Environmental Sciences Division, the Atmospheric Radiation Measurement (ARM) Program and the Atmospheric Chemistry Program (ACP). Research activities conducted under these programs include laboratory experiments, field measurements, and theoretical and modeling studies. The objectives and scope of these programs are briefly summarized. The ARM Program is the Department`s major research activity focusing on atmospheric processes pertinent to understanding global climate and developing the capability of predicting global climate change in response to energy related activities. The ARM approach consists mainly of testing and improving models using long-term measurements of atmospheric radiation and controlling variables at highly instrumented sites in north central Oklahoma, in the Tropical Western Pacific, and on the North Slope of Alaska. Atmospheric chemistry research within DOE addresses primarily the issue of atmospheric response to emissions from energy-generation sources. As such this program deals with the broad topic known commonly as the atmospheric source-receptor sequence. This sequence consists of all aspects of energy-related pollutants from the time they are emitted from their sources to the time they are redeposited at the Earth`s surface.

Schwartz, S.E.

1995-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

Position: Assistant Professor of Chemistry, Physical Chemistry  

E-Print Network (OSTI)

John Grey Position: Assistant Professor of Chemistry, Physical Chemistry Email: jkgrey@unm.edu Phone: 505.277.1658; Fax: 505.277.2609 Office: Clark Hall B70 Homepage: http://chemistry.unm.edu/faculty_web/jgrey Education B.S. in Chemistry, 1999, Michigan Technological University, Houghton, MI Ph.D. in Chemistry

82

Green Chemistry and Workers  

E-Print Network (OSTI)

of green chemistry and green engineering and by consideringResearch, Green Chemistry and Green Engineering Center, YaleOF GREEN CHEMISTRY AND GREEN ENGINEERING Julie Zimmerman By

2009-01-01T23:59:59.000Z

83

UCLA CHEMISTRY & BIOCHEMISTRY  

E-Print Network (OSTI)

UCLA CHEMISTRY & BIOCHEMISTRY ORIENTATION HANDBOOK 2012-2013 #12;Table of Contents Introduction .............................................................................................................................................2 Chemistry & Biochemistry Undergraduate Office ..................................................................................................3 Majors in Chemistry

Levine, Alex J.

84

Green Chemistry and Workers  

E-Print Network (OSTI)

J. Warner. 1998. Green Chemistry: Theory and Practice. NewNew Science, Green Chemistry and Environmental Health.abstract.html 5. American Chemistry Council. 2003. Guide to

2009-01-01T23:59:59.000Z

85

Direct Aerosol Forcing Uncertainty  

DOE Data Explorer (OSTI)

Understanding sources of uncertainty in aerosol direct radiative forcing (DRF), the difference in a given radiative flux component with and without aerosol, is essential to quantifying changes in Earth's radiation budget. We examine the uncertainty in DRF due to measurement uncertainty in the quantities on which it depends: aerosol optical depth, single scattering albedo, asymmetry parameter, solar geometry, and surface albedo. Direct radiative forcing at the top of the atmosphere and at the surface as well as sensitivities, the changes in DRF in response to unit changes in individual aerosol or surface properties, are calculated at three locations representing distinct aerosol types and radiative environments. The uncertainty in DRF associated with a given property is computed as the product of the sensitivity and typical measurement uncertainty in the respective aerosol or surface property. Sensitivity and uncertainty values permit estimation of total uncertainty in calculated DRF and identification of properties that most limit accuracy in estimating forcing. Total uncertainties in modeled local diurnally averaged forcing range from 0.2 to 1.3 W m-2 (42 to 20%) depending on location (from tropical to polar sites), solar zenith angle, surface reflectance, aerosol type, and aerosol optical depth. The largest contributor to total uncertainty in DRF is usually single scattering albedo; however decreasing measurement uncertainties for any property would increase accuracy in DRF. Comparison of two radiative transfer models suggests the contribution of modeling error is small compared to the total uncertainty although comparable to uncertainty arising from some individual properties.

Mccomiskey, Allison

86

BNL | Aerosol Lifecycle IOP  

NLE Websites -- All DOE Office Websites (Extended Search)

Program Program Aerosol Life Cycle IOP The primary objectives that make up the Aerosol Life Cycle IOP can be broken down into three categories: Scientific; Logistical; and GVAX preparation. Scientific Objectives The science goals are to conduct intensive aerosol observations in a region exposed to anthropogenic, biogenic, and marine emissions with atmospheric processing times depending on air mass trajectories and time of day. Take advantage of new instruments in the MAOS (e.g., SP2, HR-PTRMS, ACSM, Trace Gas Suite, PASS-3, Aethelometer, UHSAS). Within this broad umbrella are embedded three main foci: Aerosol light absorption: How does the aerosol mass absorption coefficient (absorption per unit mass of BC) vary with atmospheric processing? Do observations agree with a shell-core model?

87

Characterizing the formation of secondary organic aerosols  

SciTech Connect

Organic aerosol is an important fraction of the fine particulate matter present in the atmosphere. This organic aerosol comes from a variety of sources; primary organic aerosol emitted directly from combustion process, and secondary aerosol formed in the atmosphere from condensable vapors. This secondary organic aerosol (SOA) can result from both anthropogenic and biogenic sources. In rural areas of the United States, organic aerosols can be a significant part of the aerosol load in the atmosphere. However, the extent to which gas-phase biogenic emissions contribute to this organic load is poorly understood. Such an understanding is crucial to properly apportion the effect of anthropogenic emissions in these rural areas that are sometimes dominated by biogenic sources. To help gain insight on the effect of biogenic emissions on particle concentrations in rural areas, we have been conducting a field measurement program at the University of California Blodgett Forest Research Facility. The field location includes has been used to acquire an extensive suite of measurements resulting in a rich data set, containing a combination of aerosol, organic, and nitrogenous species concentration and meteorological data with a long time record. The field location was established in 1997 by Allen Goldstein, a professor in the Department of Environmental Science, Policy and Management at the University of California at Berkeley to study interactions between the biosphere and the atmosphere. The Goldstein group focuses on measurements of concentrations and whole ecosystem biosphere-atmosphere fluxes for volatile organic compounds (VOC's), oxygenated volatile organic compounds (OVOC's), ozone, carbon dioxide, water vapor, and energy. Another important collaborator at the Blodgett field location is Ronald Cohen, a professor in the Chemistry Department at the University of California at Berkeley. At the Blodgett field location, his group his group performs measurements of the concentrations of important gas phase nitrogen compounds. Experiments have been ongoing at the Blodgett field site since the fall of 2000, and have included portions of the summer and fall of 2001, 2002, and 2003. Analysis of both the gas and particle phase data from the year 2000 show that the particle loading at the site correlates with both biogenic precursors emitted in the forest and anthropogenic precursors advected to the site from Sacramento and the Central Valley of California. Thus the particles at the site are affected by biogenic processing of anthropogenic emissions. Size distribution measurements show that the aerosol at the site has a geometric median diameter of approximately 100 nm. On many days, in the early afternoon, growth of nuclei mode particles (<20 nm) is also observed. These growth events tend to occur on days with lower average temperatures, but are observed throughout the summer. Analysis of the size resolved data for these growth events, combined with typical measured terpene emissions, show that the particle mass measured in these nuclei mode particles could come from oxidation products of biogenic emissions, and can serve as a significant route for SOA partitioning into the particle phase. During periods of each year, the effect of emissions for forest fires can be detected at the Blodgett field location. During the summer of 2002 emissions from the Biscuit fire, a large fire located in Southwest Oregon, was detected in the aerosol data. The results show that increases in particle scattering can be directly related to increased black carbon concentration and an appearance of a larger mode in the aerosol size distribution. These results show that emissions from fires can have significant impact on visibility over large distances. The results also reinforce the view that forest fires can be a significant source of black carbon in the atmosphere, which has important climate and visibility. Continuing work with the 2002 data set, particularly the combination of the aerosol and gas phase data, will continue to provide important information o

Lunden, Melissa; Black, Douglas; Brown, Nancy

2004-02-01T23:59:59.000Z

88

Nanoscience and chemistry Nanoscience, Nanotechnology, and Chemistry**  

E-Print Network (OSTI)

Nanoscience and chemistry Nanoscience, Nanotechnology, and Chemistry** George M. Whitesides* Keywords: · chemistry · devices · nanoscience · nanotechnology What is Nanoscience? "Nanoscience and electrical en- gineering, nanoscience is most often associated with quan- tum behavior, and the behavior

Prentiss, Mara

89

for Undergraduate CHEMISTRY MAJORS  

E-Print Network (OSTI)

and Marketing, Consulting, Environmental Chemistry, Chemical Education, Chemical Engineering, ChemicalHANDBOOK for Undergraduate CHEMISTRY MAJORS DEPARTMENT OF CHEMISTRY Fall 2010 #12;#12;TABLE OF CONTENTS A Career in Chemistry - What It Means ___________________________________________ 4 What do

Stuart, Steven J.

90

Clinical Chemistry  

Science Journals Connector (OSTI)

Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, New Mexico 88003 ... The use of europium chelates in a homogeneous fluorescence energy-transfer immunoassay was also examined (A210). ... Finally, the escalating costs have spurred health care reform and more specifically managed care and capitation environments within which laboratories are forced to operate. ...

David J. Anderson; Baochuan Guo; Yan Xu; Lily M. Ng; Larry J. Kricka; Kristen J. Skogerboe; David S. Hage; Larry Schoeff; Joseph Wang; Lori J. Sokoll; Daniel W. Chan; Kory M. Ward; Katherine A. Davis

1997-06-15T23:59:59.000Z

91

Chemistry 411/611 Inorganic Chemistry (2011)  

E-Print Network (OSTI)

1 Chemistry 411/611 Inorganic Chemistry (2011) Instructor: Assistant Professor Mathew M. Maye Chemistry", 5th Edition, Freeman Press. Available at SU bookstore. The solution manual is optional. (Suggested for CHE611 Students pursuing Inorganic) Huheey, "Inorganic Chemistry: Principles of Structure

Mather, Patrick T.

92

Chemistry 675 (CHE 675) Advanced Organic Chemistry  

E-Print Network (OSTI)

Chemistry 675 (CHE 675) Advanced Organic Chemistry Fall Semester 2011 Professor James Hougland675 is a graduate-level organic chemistry course that can be continued in the Spring semester as CHE685. These two courses focus on physical organic chemistry, which deals with the structure

Mather, Patrick T.

93

Chemistry 106X -Fall 2010 General Chemistry  

E-Print Network (OSTI)

Chemistry 106X - Fall 2010 General Chemistry Instructor: Christopher Iceman Class: MWF 9 bookstore or elsewhere: · Chemistry and Chemical Reactivity 7th Ed. by Kotz, Treichel, and Townsend-0-495-38703-9 Electronic Book - ISBN 978-0-495-68043-7 · OWL pin number for Chemistry and Chemical Reactivity 7th Ed. (1

Wagner, Diane

94

Chemistry 106X -Spring 2011 General Chemistry  

E-Print Network (OSTI)

Chemistry 106X - Spring 2011 General Chemistry Instructor: Christopher Iceman Class: MWF 1 and can be purchased in the UAF bookstore or elsewhere: · Chemistry and Chemical Reactivity 7th Ed for Chemistry and Chemical Reactivity 7th Ed. (1 or 2 semester) · TurningPoint Technologies ResponseCard RF

Wagner, Diane

95

A World-wide Stratospheric Aerosol Layer  

Science Journals Connector (OSTI)

...Massachusetts An aerosol layer has been identified by a stratospheric balloon and aircraft aerosol collection program. Measurements...Abstract. An aerosol layer has been identified by a stratospheric balloon and aircraft aerosol collection program. Meas-urements...

Christian E. Junge; Charles W. Chagnon; James E. Manson

1961-05-12T23:59:59.000Z

96

SAGE II long-term measurements of stratospheric and upper tropospheric aerosols  

SciTech Connect

The Stratospheric Aerosol and Gas Experiment (SAGE) II solar occultation instrument has been making measurements on stratospheric aerosols and gases continually since October 1984. Observations from the SAGE II instrument provide a valuable long-term data set for study of the aerosol in the stratosphere and aerosol and cloud in the upper troposphere. The period of observation covers the decay phase of material injected by the El Chichon volcanic eruption in 1982, the years 1988--1990 when stratospheric aerosol levels approached background levels, and the period after the eruption of Mount Pinatubo in 1991. The Mount Pinatubo eruption caused the largest perturbation in stratospheric aerosol loading in this century, with effects on stratospheric dynamics and chemistry. The SAGE II data sequence shows the global dispersion of aerosols following the Mount Pinatubo eruption, as well as the changes occurring in stratospheric aerosol mass and surface area. The downward transfer of stratospheric aerosols into the upper troposphere following the earlier eruption of El Chichon is clearly visible. Estimates have been made of the amount of volcanic material lying in the upper troposphere and the way in which this varies with latitude and season.

Wang, P.H.; Kent, G.S. [Science and Technology Corp., Hampton, VA (United States); McCormick, M.P.; Thomason, L.W. [NASA Langley Research Center, Hampton, VA (United States). Atmospheric Sciences Div.

1995-12-31T23:59:59.000Z

97

Sulfate aerosols and polar stratospheric cloud formation  

SciTech Connect

Before the discovery of the Antarctic ozone hole, it was generally assumed that gas-phase chemical reactions controlled the abundance of stratospheric ozone. However, the massive springtime ozone losses over Antarctica first reported by Farman et al in 1985 could not be explained on the basis of gas-phase chemistry alone. In 1986, Solomon et al suggested that chemical reactions occurring on the surfaces of polar stratospheric clouds (PSCs) could be important for the observed ozone losses. Since that time, an explosion of laboratory, field, and theoretical research in heterogeneous atmospheric chemistry has occurred. Recent work has indicated that the most important heterogeneous reaction on PSCs is ClONO[sub 2] + HCl [yields] Cl[sub 2] + HNO[sub 3]. This reaction converts inert chlorine into photochemically active Cl[sub 2]. Photolysis of Cl[sub 2] then leads to chlorine radicals capable of destroying ozone through very efficient catalytic chain reactions. New observations during the second Airborne Arctic Stratospheric Expedition found stoichiometric loss of ClONO[sub 2] and HCl in air processed by PSCs in accordance with reaction 1. Attention is turning toward understanding what kinds of aerosols form in the stratospheric, their formation mechanism, surface area, and specific chemical reactivity. Some of the latest findings, which underline the importance of aerosols, were presented at a recent National Aeronautics and Space Administration workshop in Boulder, Colorado.

Tolbert, M.A. (Univ. of Colorado, Boulder, CO (United States))

1994-04-22T23:59:59.000Z

98

Aerosols and Clouds: In Cahoots to Change Climate  

ScienceCinema (OSTI)

Key knowledge gaps persist despite advances in the scientific understanding of how aerosols and clouds evolve and affect climate. The Two-Column Aerosol Project, or TCAP, was designed to provide a detailed set of observations to tackle this area of unknowns. Led by PNNL atmospheric scientist Larry Berg, ARM's Climate Research Facility was deployed in Cape Cod, Massachusetts for the 12-month duration of TCAP, which came to a close in June 2013. "We are developing new tools to look at particle chemistry, like our mass spectrometer used in TCAP that can tell us the individual chemical composition of an aerosol," said Berg. "Then, we'll run our models and compare it with the data that we have to make sure we're getting correct answers and make sure our climate models are reflecting the best information."

Berg, Larry

2014-06-02T23:59:59.000Z

99

School of Chemistry CHEM3100: Chemistry at a Molecular Level  

E-Print Network (OSTI)

School of Chemistry CHEM3100: Chemistry at a Molecular Level Tutorial Groups 2013/14 Name Programme Tutor Ahmed, Zacher Medicinal Chemistry Arif, Saboor Chemistry Bagnall, Samuel Chemistry Barbara, David Chemistry Beaumont, Nicholas Chemistry Quinn, Michael J Chemistry Bennett, Matthew Chemistry Booth, Natalie

Rzepa, Henry S.

100

Representing Cloud Processing of Aerosol in Numerical Models  

SciTech Connect

The satellite imagery in Figure 1 provides dramatic examples of how aerosol influences the cloud field. Aerosol from ship exhaust can serve as nucleation centers in otherwise cloud-free regions, forming ship tracks (top image), or can enhance the reflectance/albedo in already cloudy regions. This image is a demonstration of the first indirect effect, in which changes in aerosol modulate cloud droplet radius and concentration, which influences albedo. It is thought that, through the effects it has on precipitation (drizzle), aerosol can also affect the structure and persistence of planetary boundary layer (PBL) clouds. Regions of cellular convection, or open pockets of cloudiness (bottom image) are thought to be remnants of strongly drizzling PBL clouds. Pockets of Open Cloudiness (POCs) (Stevens et al. 2005) or Albrecht's ''rifts'' are low cloud fraction regions characterized by anomalously low aerosol concentrations, implying they result from precipitation. These features may in fact be a demonstration of the second indirect effect. To accurately represent these clouds in numerical models, we have to treat the coupled cloud-aerosol system. We present the following series of mesoscale and large eddy simulation (LES) experiments to evaluate the important aspects of treating the coupled cloud-aerosol problem. 1. Drizzling and nondrizzling simulations demonstrate the effect of drizzle on a mesoscale forecast off the California coast. 2. LES experiments with explicit (bin) microphysics gauge the relative importance of the shape of the aerosol spectrum on the 3D dynamics and cloud structure. 3. Idealized mesoscale model simulations evaluate the relative roles of various processes, sources, and sinks.

Mechem, D.B.; Kogan, Y.L.

2005-03-18T23:59:59.000Z

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

ARM - Field Campaign - MASRAD: Cloud Condensate Nuclei Chemistry  

NLE Websites -- All DOE Office Websites (Extended Search)

govCampaignsMASRAD: Cloud Condensate Nuclei Chemistry Measurements govCampaignsMASRAD: Cloud Condensate Nuclei Chemistry Measurements Campaign Links AMF Point Reyes Website Related Campaigns MArine Stratus Radiation Aerosol and Drizzle (MASRAD) IOP 2005.03.14, Miller, AMF Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : MASRAD: Cloud Condensate Nuclei Chemistry Measurements 2005.07.01 - 2005.07.30 Lead Scientist : Carl Berkowitz For data sets, see below. Description Principal Investigators: J. Ogren, C. Berkowitz, R. Halthore, A. Laskin, A. Strawa, J. Wang, A. Wexler As part of the ARM Mobile Facility (AMF) deployment to Point Reyes, CA in the spring and summer of 2005, a suite of instrumentation was installed to measure the chemical, physical and optical properties of aerosol particles

102

CHEMISTRY CURRICULUM SEMESTER I  

E-Print Network (OSTI)

CHEMISTRY CURRICULUM SEMESTER ­ I Chemistry-I: Physical principles (2:1) Atomic structure-state approximation, Arrhenius equation and collision theory and catalysis. SEMESTER ­ II Chemistry-II: Structure orbital theory: polyatomic molecules - Walsh diagram; Main group chemistry: periodic properties, chemistry

Srinivasan, N.

103

Discrimination between thin cirrus and and tropospheric aerosol using  

NLE Websites -- All DOE Office Websites (Extended Search)

Discrimination between thin cirrus and and tropospheric aerosol using Discrimination between thin cirrus and and tropospheric aerosol using multiple measurements from Darwin ARCS Mitchell, Ross CSIRO Category: Aerosols Thin cirrus cloud occurs frequently in the tropics, and is often difficult to distinguish from tropospheric aerosol on the basis of temporal variations in ground based measurements, since both can be rather spatially uniform. In this study we investigate their discrimination by combining data from three instruments at the Darwin Atmospheric Radiation and Cloud Station (ARCS): the Cimel sun photometer (CSP), the micropulse lidar (MPL), and the total sky imager (TSI). The study was carried out over the dry season of 2005, with the usual widespread burning of tropical savanna leading to extensive smoke plumes. It is shown that the locus of data in

104

Nuclear chemistry at Harvard  

Science Journals Connector (OSTI)

Nuclear chemistry at Harvard ... This article points out the potential of the chemistry department at Harvard University for research in nuclear chemistry for students who wish to do work in the field for the Ph.D. degree. ... Nuclear / Radiochemistry ...

Geoffrey Wilkinson; Richard M. Diamond; Eugene G. Rochow

1954-01-01T23:59:59.000Z

105

ALS Chemistry Lab  

NLE Websites -- All DOE Office Websites (Extended Search)

ALS Chemistry Lab Print ALS Chemistry Labs The ALS Chemistry Labs are located in the User Support Building (15-130) and in Building 6 (6-2233)*. These spaces are dedicated for...

106

ALS Chemistry Lab  

NLE Websites -- All DOE Office Websites (Extended Search)

Safety Safety for Users ALS Chemistry Lab Print ALS Chemistry Labs The ALS Chemistry Labs are located in the User Support Building (15-130) and in Building 6 (6-2233)*. These...

107

ALS Chemistry Lab  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry Lab Print ALS Chemistry Labs The ALS Chemistry Labs are located in the User Support Building (15-130) and in Building 6 (6-2233)*. These spaces are dedicated for...

108

Shock-induced Chemistry  

NLE Websites -- All DOE Office Websites (Extended Search)

Shock-induced Chemistry 1663 Los Alamos science and technology magazine Latest Issue:August 2014 All Issues submit Shock-induced Chemistry New paradigms in chemical reactivity...

109

Green Chemistry and Workers  

E-Print Network (OSTI)

19. P. Anastas, J. Warner. 1998. Green Chemistry: Theory andto Advance New Science, Green Chemistry and EnvironmentalChronicle Extra: Guide to Green Jobs. Field with a Future.

2009-01-01T23:59:59.000Z

110

Modern Organic Chemistry  

Science Journals Connector (OSTI)

... to organic chemistry, tautomerism, glutaconic acids, the constitution of urea, the menthone chemistry, carene, hydroxymethylenecamphor, squalene, insulin, the production of acetic acid from cellulose by anaerobic fermentation ...

J. R.

1928-06-02T23:59:59.000Z

111

Chemistry Applications at NERSC  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry Chemistry Applications Gaussian 09 Gaussian 09 is a connected series of programs for performing semi-empirical, density functional theory and ab initio molecular orbital...

112

Sustainable Process Chemistry  

Science Journals Connector (OSTI)

Sustainable Process Chemistry ... Increase energy efficiency ... Implementation of such processes is believed to reduce waste (first principle of Green Chemistry) and increase sustainability. ...

Robert Appell; Dinesh Gala; Yogesh S. Sanghvi

2011-06-06T23:59:59.000Z

113

Combustion chemistry  

SciTech Connect

This research is concerned with the development and use of sensitivity analysis tools to probe the response of dependent variables to model input variables. Sensitivity analysis is important at all levels of combustion modeling. This group`s research continues to be focused on elucidating the interrelationship between features in the underlying potential energy surface (obtained from ab initio quantum chemistry calculations) and their responses in the quantum dynamics, e.g., reactive transition probabilities, cross sections, and thermal rate coefficients. The goals of this research are: (i) to provide feedback information to quantum chemists in their potential surface refinement efforts, and (ii) to gain a better understanding of how various regions in the potential influence the dynamics. These investigations are carried out with the methodology of quantum functional sensitivity analysis (QFSA).

Brown, N.J. [Lawrence Berkeley Laboratory, CA (United States)

1993-12-01T23:59:59.000Z

114

Geometrical Optics of Dense Aerosols  

SciTech Connect

Assembling a free-standing, sharp-edged slab of homogeneous material that is much denser than gas, but much more rare ed than a solid, is an outstanding technological challenge. The solution may lie in focusing a dense aerosol to assume this geometry. However, whereas the geometrical optics of dilute aerosols is a well-developed fi eld, the dense aerosol limit is mostly unexplored. Yet controlling the geometrical optics of dense aerosols is necessary in preparing such a material slab. Focusing dense aerosols is shown here to be possible, but the nite particle density reduces the eff ective Stokes number of the flow, a critical result for controlled focusing. __________________________________________________

Hay, Michael J.; Valeo, Ernest J.; Fisch, Nathaniel J.

2013-04-24T23:59:59.000Z

115

BNL | Aerosol, Cloud, Precipitation Interactions  

NLE Websites -- All DOE Office Websites (Extended Search)

Cloud-Aerosol-Precipitation Interactions Cloud-Aerosol-Precipitation Interactions Atmospheric aerosols exert important "indirect effects" on clouds and climate by serving as cloud condensation nuclei (CCN) and ice nuclei that affect cloud radiative and microphysical properties. For example, an increase in CCN increases the number concentration of droplets enhances cloud albedo, and suppresses precipitation that alters cloud coverage and lifetime. However, in the case of moist and strong convective clouds, increasing aerosols may increase precipitation and enhance storm development. Although aerosol-induced indirect effects on climate are believed to have a significant impact on global climate change, estimating their impact continues to be one of the most uncertain climate forcings.

116

Jankovic Aerosol Characterization.ppt  

NLE Websites -- All DOE Office Websites (Extended Search)

Characterization, Characterization, Aerosol Characterization, Interpretation, and Interpretation, and Application of Data Application of Data NSRC Symposium NSRC Symposium July 8, 2008 John Jankovic, CIH CIH Center for Nanophase Materials Sciences Center for Nanophase Materials Sciences Aerosol Characterization, Interpretation, and Aerosol Characterization, Interpretation, and Application of Data Application of Data Department of Energy (DOE) Nanoscale Science Research Centers (NSRC) developing Approach to Nanomaterial ES&H - The CNMS Approach * Establish Exposure Control Guideline (ECG) - Characterize Aerosol * Collect and interpret data * Assign Process to a Control Band Aerosol Particle Characterization * Size distribution (geometric mean and geometric standard deviation related to either mass, surface, or number)

117

FACULTY POSITION IN INORGANIC CHEMISTRY Department of Chemistry  

E-Print Network (OSTI)

FACULTY POSITION IN INORGANIC CHEMISTRY Department of Chemistry Syracuse University The Department of Chemistry at Syracuse University invites applications for a tenure track faculty position at the Assistant Professor level in inorganic chemistry with specialization in materials chemistry (broadly defined

Doyle, Robert

118

Chemistry 320N Organic Chemistry II  

E-Print Network (OSTI)

Chemistry 320N Organic Chemistry II for Prehealth Professionals Unique number: 52365 Spring 2013 M students can access the information. #12;Required Text: Brown, Foote, Iverson, & Anslyn Organic Chemistry have the 6th Edition book, as many homework and exam questions will come directly from the 6th Edition

119

Department of Chemistry "Supramolecular Chemistry in Polymeric  

E-Print Network (OSTI)

Department of Chemistry "Supramolecular Chemistry in Polymeric Systems: From Nanoassemblies Colloquium Friday, May 15, 2009 3:00 p.m. 502 Rieveschl #12;Supramolecular Chemistry in Polymeric Systems and Engineering, Case Western Reserve University, 2100 Adelbert Road, Cleveland, OH 44106-7202, USA stuart

Mark, James E.

120

Evolution of Asian aerosols during transpacific transport in INTEX-B  

SciTech Connect

Measurements of aerosol composition were made with an Aerodyne High Resolution Time-of-Flight Aerosol Mass Spectrometer (HR-ToF-AMS) on board the NSF/NCAR C-130 aircraft as part of the Intercontinental Chemical Transport Experiment Phase B 5 (INTEX-B) field campaign over the Eastern Pacific Ocean. The HR-ToF-AMS measurements of non-refractory submicron aerosol mass are shown to compare well with other aerosol instrumentation in the INTEX-B field study. Two case studies are described for pollution layers transported across the Pacific from the Asian continent, intercepted 3–4 days and 7–10 days downwind of Asia, respectively. Aerosol chemistry is shown to 10 be a robust tracer for air masses originating in Asia, specifically the presence of sulfate dominated aerosol is a distinguishing feature of Asian pollution layers that have been transported to the Eastern Pacific. We examine the time scales of processing for sulfate and organic aerosol in the atmosphere and show that our observations confirm a conceptual model for transpacific transport from Asia proposed by Brock et al. (2004). 15 Our observations of both sulfate and organic aerosol in aged Asian pollution layers are consistent with fast formation near the Asian continent, followed by washout during lofting and subsequent transformation during transport across the Pacific. Our observations are the first atmospheric measurements to indicate that although secondary organic aerosol (SOA) formation from pollution happens on the timescale of one day, 20 the oxidation of organic aerosol continues at longer timescales in the atmosphere. Comparisons with chemical transport models of data from the entire campaign reveal an under-prediction of SOA mass in the MOZART model, but much smaller discrepancies with the GEOS-Chem model than found in previous studies over the Western Pacific. No evidence is found to support a previous hypothesis for significant secondary 25 organic aerosol formation in the free troposphere.

Dunlea, E. J.; DeCarlo, Peter; Aiken, Allison; Kimmel, Joel; Peltier, R. E.; Weber, R. J.; Tomlinson, Jason M.; Collins, Donald R.; Shinozuka, Yohei; McNaughton, C. S.; Howell, S. G.; Clarke, A. D.; Emmons, L.; Apel, Eric; Pfister, G. G.; van Donkelaar, A.; Martin, R. V.; Millet, D. B.; Heald, C. L.; Jimenez, J. L.

2009-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

aerosols and climate : uncertainties  

E-Print Network (OSTI)

contributes to creating a level playing field. (BC emissions tradeble like CO2 emissions?) OUTLINE #12;size. policy measures, is even more uncertain (emissions & their chemical fingerprint are uncertain (not just aerosol emissions, not just climate impacts) OUTLINE #12;- Standardization doesn't reduce

122

Tropospheric Aerosols Lead authors: Jost Heintzenberg Frank Raes Stephen E. Schwartz  

E-Print Network (OSTI)

-F.Graf · Jeremy M.Hales · Hartmut Herrmann Thorsten Hoffman · Barry Huebert · Rudolf B. Husar · Ruprecht Jaenicke advances in atmos- pheric chemistry were made in gas-phase photochem- istry, except perhaps for a brief-scale chemical transport models is essen- tial. As aerosol particles are strongly coupled with gas- phase

Schwartz, Stephen E.

123

Retrieval of Non-Spherical Dust Aerosol Properties from Satellite Observations  

E-Print Network (OSTI)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 4.2 Comparison between the MODIS RGB image (left panel) and aerosol optical depth derived in the MODIS Deep Blue product (right panel) over the Sahara Desert on April 1, 2010. . . . . . . . . . . . . . . . . 85 xii 4.3 Comparison between.... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 4.2 Comparison between the MODIS RGB image (left panel) and aerosol optical depth derived in the MODIS Deep Blue product (right panel) over the Sahara Desert on April 1, 2010. . . . . . . . . . . . . . . . . 85 xii 4.3 Comparison between...

Huang, Xin

2013-08-01T23:59:59.000Z

124

Aerosols in a Changing Atmosphere: From Detailed Aerosol Microphysics to  

NLE Websites -- All DOE Office Websites (Extended Search)

Aerosols in a Changing Atmosphere: From Detailed Aerosol Microphysics to Aerosols in a Changing Atmosphere: From Detailed Aerosol Microphysics to Policy Applications Speaker(s): Susanne Bauer Date: December 6, 2011 - 4:00pm Location: 90-4133 Seminar Host/Point of Contact: Surabi Menon The anthropogenic increase in aerosol concentrations since preindustrial times and its net cooling effect on the atmosphere is thought to mask some of the greenhouse gas induced warming. Although the overall effect of aerosols on solar radiation and clouds is most certainly negative, some individual forcing agents and feedbacks have positive forcing effects. Recent studies have tried to identify some of those positive forcing agents and their individual emission sectors, However, understanding the net effect of multi-source emitting sectors and the involved cloud feedbacks is

125

Why chemistry? Chemistry is fundamental: it is the enabling  

E-Print Network (OSTI)

Chemistry Why chemistry? Chemistry is fundamental: it is the enabling science that underlies many technology. A chemistry degree gives you the understanding to contribute to our future in very topical areas) in Chemistry BSc (Hons) in Chemistry MChem (Hons) in Chemistry (with an industrial placement year) MChem (Hons

Sussex, University of

126

Aerosol Observing System (AOS) Handbook  

SciTech Connect

The Aerosol Observing System (AOS) is a suite of in situ surface measurements of aerosol optical and cloud-forming properties. The instruments measure aerosol properties that influence the earth’s radiative balance. The primary optical measurements are those of the aerosol scattering and absorption coefficients as a function of particle size and radiation wavelength and cloud condensation nuclei (CCN) measurements as a function of percent supersaturation. Additional measurements include those of the particle number concentration and scattering hygroscopic growth. Aerosol optical measurements are useful for calculating parameters used in radiative forcing calculations such as the aerosol single-scattering albedo, asymmetry parameter, mass scattering efficiency, and hygroscopic growth. CCN measurements are important in cloud microphysical models to predict droplet formation.

Jefferson, A

2011-01-17T23:59:59.000Z

127

Experimental study of nuclear workplace aerosol samplers  

E-Print Network (OSTI)

LITERATURE REVIEW Aerosol Losses in an Inlet . Aerosol Losses in a Transport System Aerosol Losses in CAMs Critical Flow Venturi 8 13 15 16 EXPERIMENT PROCEDURE 18 CAM Evaluation Consideration FAS Evaluation Consideration Test Protocol Mixing... Chamber Setup High Speed Aerosol Wind Tunnel Setup Low Speed Aerosol Wind Tunnel Setup Critical Flow Venturi 18 19 21 22 24 25 27 RESULTS AND DISCUSSION Page 28 Aerosol Penetration through Transport Systems and CAM Areal Uniformity Deposits...

Parulian, Antony

2012-06-07T23:59:59.000Z

128

Two-Column Aerosol Project  

NLE Websites -- All DOE Office Websites (Extended Search)

help find the answer, the Department of Energy's Atmospheric Radiation Measurement (ARM) Climate Research Facility is conducting the Two-Column Aerosol Project (TCAP) at Cape Cod...

129

Molecular Characterization of Biomass Burning Aerosols Using...  

NLE Websites -- All DOE Office Websites (Extended Search)

Biomass Burning Aerosols Using High Resolution Mass Spectrometry. Molecular Characterization of Biomass Burning Aerosols Using High Resolution Mass Spectrometry. Abstract: Chemical...

130

Chemistry on the inside: green chemistry in mesoporous materials  

Science Journals Connector (OSTI)

...millennium: young scientists give their visions of the future III. Chemistry and biological physics compiled by J. M. T. Thompson Chemistry on the inside: green chemistry in mesoporous materials Duncan J. Macquarrie Department of Chemistry...

2000-01-01T23:59:59.000Z

131

Final Report for LDRD Project ''A New Era of Research in Aerosol/Cloud/Climate Interactions at LLNL''  

SciTech Connect

Observations of global temperature records seem to show less warming than predictions of global warming brought on by increasing concentrations of CO{sub 2} and other greenhouse gases. One of the reasonable explanations for this apparent inconsistency is that the increasing concentrations of anthropogenic aerosols may be partially counteracting the effects of greenhouse gases. Aerosols can scatter or absorb the solar radiation, directly change the planetary albedo. Aerosols, unlike CO{sub 2}, may also have a significant indirect effect by serving as cloud condensation nuclei (CCN). Increases in CCN can result in clouds with more but smaller droplets, enhancing the reflection of solar radiation. Aerosol direct and indirect effects are a strong function of the distributions of all aerosol types and the size distribution of the aerosol in question. However, the large spatial and temporal variabilities in the concentration, chemical characteristics, and size distribution of aerosols have made it difficult to assess the magnitude of aerosol effects on atmospheric radiation. These variabilities in aerosol characteristics as well as their effects on clouds are the leading sources of uncertainty in predicting future climate variation. Inventory studies have shown that the present-day anthropogenic emissions contribute more than half of fine particle mass primarily due to sulfate and carbonaceous aerosols derived from fossil fuel combustion and biomass burning. Parts of our earlier studies have been focused on developing an understanding of global sulfate and carbonaceous aerosol abundances and investigating their climate effects [Chuang et al., 1997; Penner et al., 1998]. We have also modeled aerosol optical properties to account for changes in the refractive indices with relative humidity and dry aerosol composition [Grant et al., 1999]. Moreover, we have developed parameterizations of cloud response to aerosol abundance for use in global models to evaluate the importance of aerosol/cloud interactions on climate forcing [Chuang and Penner, 1995]. Our research has been recognized as one of a few studies attempting to quantify the effects of anthropogenic aerosols on climate in the IPCC Third Assessment Report [IPCC, 2001]. Our previous assessments of aerosol climate effects were based on a general circulation model (NCAR CCM1) fully coupled to a global tropospheric chemistry model (GRANTOUR). Both models, however, were developed more than a decade ago. The lack of advanced physics representation and techniques in our current models limits us from further exploring the interrelationship between aerosol, cloud, and climate variation. Our objective is to move to a new era of aerosol/cloud/climate modeling at LLNL by coupling the most advanced chemistry and climate models and by incorporating an aerosol microphysics module. This modeling capability will enable us to identify and analyze the responsible processes in aerosol/cloud/climate interactions and therefore, to improve the level of scientific understanding for aerosol climate effects. This state-of-the-art coupled models will also be used to address the relative importance of anthropogenic and natural emissions in the spatial pattern of aerosol climate forcing in order to assess the potential of human induced climate change.

Chuang, C; Bergman, D J; Dignon, J E; Connell, P S

2002-01-31T23:59:59.000Z

132

Computational Chemistry Robots  

E-Print Network (OSTI)

Computational Chemistry Robots ACS Sep 2005 Computational Chemistry Robots J. A. Townsend, P. Murray-Rust, S. M. Tyrrell, Y. Zhang jat45@cam.ac.uk Can high-throughput computation provide a reliable “experimental” resource for molecular...

Townsend, Joseph A; Murray-Rust, Peter; Tyrrell, Simon M; Zhang, Yong

133

surface chemistry | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

surface chemistry surface chemistry Leads No leads are available at this time. FeSSZ-13 as an NH3-SCR Catalyst: A Reaction Kinetics and FTIRMössbauer Spectroscopic Study....

134

Why chemistry? Chemistry is fundamental: it is the enabling science  

E-Print Network (OSTI)

Chemistry Why chemistry? Chemistry is fundamental: it is the enabling science that underlies many technology. A chemistry degree allows you to understand and to contribute to our future. Chemistry is challenging: understanding the very fabric of matter is both stimulating and rewarding. Studying chemistry

Sussex, University of

135

4, 58315854, 2004 Fluorescing aerosol  

E-Print Network (OSTI)

released by combustion into the atmosphere absorbs radiation and therefore heats the climate counteracting such as polycyclic aromatic hydrocarbons sticking to the aerosol particles, or bioaerosol such as bacteria, spores) or by combustion processes (soot), or they form in situ by gas to particle conversion, like sulphate aerosol. While

Paris-Sud XI, Université de

136

Chemistry Division Department of Biological  

E-Print Network (OSTI)

1 Chemistry Division Department of Biological and Chemical Sciences, Illinois Institute-13 Chemistry Division invites nominations for Kilpatrick Fellowship for the academic year 2012's Chemistry Department from 1947­1960. Mary Kilpatrick was a chemistry faculty member from 1947

Heller, Barbara

137

Flame Chemistry and Diagnostics  

NLE Websites -- All DOE Office Websites (Extended Search)

Details Photoionization Mass Spectrometer Flame Conditions Flame Chemistry Insights (n-butanol flame) Experiment vs. Model Fuel-Consumption Pathways...

138

Chemistry | More Science | ORNL  

NLE Websites -- All DOE Office Websites (Extended Search)

Soft Matter Chemical and Engineering Materials Quantum Condensed Matter Computational Chemistry Nuclear Sciences Engineering Computer Science Earth and Atmospheric Sciences...

139

Bringing chemistry to Cambridge  

Science Journals Connector (OSTI)

...2006 book-review Book Review Bringing chemistry to Cambridge J.S Rowlinson * * Author...ac.uk ) Physical and Theoretical Chemistry Laboratory, South Parks Road, Oxford...C.D Haley, eds, The 1702 chair of chemistry at Cambridge: transformation and change...

2006-01-01T23:59:59.000Z

140

Chemistry and Biochemistry Scholarships  

E-Print Network (OSTI)

Chemistry and Biochemistry Scholarships Complete Scholarship Name Application Deadline Date Contact to Chemistry and Biochemistry entering graduate students who have asked for consideration to serve as research@chem.sc.edu Hiram and Lawanda Allen Scholarship for Excellence in Chemistry This award is given to a graduating

Almor, Amit

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

Chemistry and Biochemistry Scholarships  

E-Print Network (OSTI)

Chemistry and Biochemistry Scholarships Complete Scholarship Name Application Deadline Date Contact Endowment Fund To provide support for undergraduate biomedical research in the Department of Chemistry/or the purchase of supplies. Yes w/recommendation s from faculty Call goes out in February to all chemistry

Almor, Amit

142

CHEMISTRY DEPARTMENT HANDBOOKFOR STUDENTS  

E-Print Network (OSTI)

CHEMISTRY DEPARTMENT HANDBOOKFOR STUDENTS Millersville University Millersville, Pennsylvania in the ChemistryDepartment. It brings together material not collected in other places and is not meant Resources 2 Programs in Chemistry and The General Education Curriculum Record Form 3 The Major Requirements

Hardy, Christopher R.

143

Adam Benoit Medicinal Chemistry  

E-Print Network (OSTI)

#12;Adam Benoit Medicinal Chemistry Ph.D. Thesis Title: Synthesis and Evaluation of Acridine Country: United States #12;Amit Gangar Medicinal Chemistry Ph.D. Thesis Title: Design and Development Wagner Home Country: India #12;Dan Wang Medicinal Chemistry M.S. Thesis Title: Synthesis and Evaluation

Thomas, David D.

144

Computational Chemistry | More Science | ORNL  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry Advanced Materials Nuclear Forensics Climate & Environment Biology and Soft Matter Chemical and Engineering Materials Quantum Condensed Matter Computational Chemistry...

145

Nanomaterials Chemistry Group - CSD  

NLE Websites -- All DOE Office Websites (Extended Search)

CSD CSD Organization Contact List Search Other Links CSD CSD Organization Contact List Search Other Links Selected Research and Development Projects The Nanomaterials Chemistry Group at Chemical Sciences Division, the Oak Ridge National Laboratory conducts fundamental research related to synthesis and characterization of nanoscopic materials as well as ionic liquids for fundamental investigation of separation and catalysis processes. This group also conducts the applied research related to the applications of nanomaterials in advanced scintillators for radiation sensing, catalysts for fuel cells, radioactive tracers for medical imaging, novel electrodes for energy storage, and sensing devices for biological agents. Extensive synthesis capabilities exist within the group for preparation of mesoporous materials (oxides and carbons), low-dimensional materials (e.g., quantum dots and nanowires), sol-gel materials, inorganic and hybrid monoliths (e.g., membranes), and nanocatalysts. Solvothermal, ionothermal, templating synthesis, chemical vapor deposition (CVD), and atomic layer deposition (ALD) methods are extensively utilized in the group for tailored synthesis of nanostructured materials. An array of techniques for characterizing physical and chemical properties related to separation and catalysis are in place or are currently being developed. This research program also takes advantage of the unique resources at ORNL such as small-angle x-ray scattering, small-angle neutron scattering at the High Flux Isotope Reactor and Spallation Neutron Source (SNS), structural analysis by a variety of electron microscopes (SEM, TEM, STEM, HRTEM) and powdered X-ray diffraction (XRD) techniques. A wide variety of other facilities for routine and novel techniques are also utilized including the Center for Nanophase Materials Science. Computational chemistry tools are employed to understand experimental results related to separation and other interfacial chemical processes and design better nanomaterials and ionic liquids. Commonly used methods include first principles density functional theory (DFT) and mixed quantum mechanical/molecular mechanical (QM/MM) techniques.

146

Aerosol Laboratory - Nuclear Engineering Division (Argonne)  

NLE Websites -- All DOE Office Websites (Extended Search)

Capabilities > Engineering Capabilities > Engineering Experimentation > Aerosol Laboratory Capabilities Engineering Experimentation Reactor Safety Experimentation Aerosol Experiments System Components Laser Applications Robots Applications Other Facilities Other Capabilities Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Aerosol Laboratory The Aerosol Laboratory (AL) houses equipment to measure and record the physical parameters necessary to characterize the formation and transport of aerosols. Bookmark and Share The Aerosol Laboratory (AL) has extensive analytic and experimental capabilities to characterize the formation and transport of aerosols formed from the condensation of vapors. Computer codes have been developed to

147

CIRRICULUM VITAE: TOM BREIDER Atmospheric Chemistry Post-Doctoral Research Fellow  

E-Print Network (OSTI)

to changing anthropogenic and dynamic biogenic emissions of trace gases and aerosols. These chemistry and trace gas factors affecting the number concentration of atmospheric Aitken (Dp=50 nm) particles. Discuss., 3, 1185-1221, 2010 4) Hossani, R., M. P. Chipperfield, W. Feng, T. J. Breider, E. Atlas, S. A

Jacob, Daniel J.

148

Organic Chemistry 51B -Winter 2013 Organic Chemistry Peer Tutoring Program Chemistry 51B Reactions List  

E-Print Network (OSTI)

Organic Chemistry 51B - Winter 2013 Organic Chemistry Peer Tutoring Program Chemistry 51B Reactions(s). Chapter 7: Nucleophilic Substitution + + NaOH CH3O- #12;Organic Chemistry 51B - Winter 2013 Organic Chemistry Peer Tutoring Program Chapter 8: Elimination Reactions #12;Organic Chemistry 51B - Winter 2013

Rose, Michael R.

149

Spatial characteristics of the difference between MISR and MODIS aerosol optical depth retrievals over mainland Southeast Asia  

E-Print Network (OSTI)

autoregressive (SAR) model Spatial clustering Data assimilation Mainland Southeast Asia The difference between satellite, aerosol products generated using data from these two sensors often exhibit noticeable differences Resolution Imaging Spectroradiometer (MODIS) aboard the NASA Earth Observation System's Terra satellite

Shi, Tao

150

B.A. DEGREE REQUIREMENTS FOR CHEMISTRY (CHEMISTRY TRACK)  

E-Print Network (OSTI)

B.A. DEGREE REQUIREMENTS FOR CHEMISTRY (CHEMISTRY TRACK) Requirements include 36 credits in chemistry core courses, 32 of which are taken in specific courses. Each student's course of study includes the following: 1.) Required Chemistry Core Courses CHE 106: General Chemistry Lecture I (3) CHE 116: General

Doyle, Robert

151

EMSL - surface chemistry  

NLE Websites -- All DOE Office Websites (Extended Search)

surface-chemistry en FeSSZ-13 as an NH3-SCR Catalyst: A Reaction Kinetics and FTIRMössbauer Spectroscopic Study. http:www.emsl.pnl.govemslwebpublications...

152

Advances in Physical Chemistry  

NLE Websites -- All DOE Office Websites (Extended Search)

Hindawi Publishing Corporation Advances in Physical Chemistry Volume 2011, Article ID 907129, 18 pages doi:10.11552011907129 Review Article Contrast and Synergy between...

153

Analytical Chemistry Applied Mathematics  

E-Print Network (OSTI)

Analytical Chemistry Applied Mathematics Architectural Engineering Architecture Architecture Electricity Markets Environmental Engineering Food Process Engineering Food Safety & Technology Architecture Information Technology & Management Integrated Building Delivery Landscape Architecture Management

Heller, Barbara

154

World Wide Chemistry  

Science Journals Connector (OSTI)

World Wide Chemistry ... Plutonium has been produced for the first time at Britain's Atomic Energy Research Establishment at Harwell. ... Indian Ore Reserves ...

G. ABRAHAMSON; RAFFAELE SANSONE

1949-04-11T23:59:59.000Z

155

Importance of Iron Mineralogy to Aerosol Solubility: Potential Effects of  

NLE Websites -- All DOE Office Websites (Extended Search)

Importance of Iron Mineralogy to Importance of Iron Mineralogy to Aerosol Solubility: Potential Effects of Aerosol Source on Ocean Photosynthesis figure 1 Figure 1. Dust storm blowing glacial dusts from the Copper River Basin of southeast Alaska into the North Pacific Ocean, which depends on this and other external iron sources to support its biological communities. (Image: NASA MODIS satellite image, Nov. 1, 2006. http://earthobservatory.nasa.gov/IOTD/view.php?id=7094) Iron is one of the most important elements to life. Despite its paramount importance and relative abundance, dissolved iron concentrations are often very low, in part due to the formation of very stable iron minerals in most oxidizing environments. Since soluble iron is available to living organisms, iron deficiencies are widespread, and the factors that influence

156

Chemistry @ Imperial College 2007 Introduction  

E-Print Network (OSTI)

Chemistry @ Imperial College 2007 #12;2 Introduction Imperial College is a world leading University. As the central science Chemistry has been a major contributor to this success. The Chemistry Department is at the forefront of modern Chemistry research, both in our core discipline and at the interfaces of Chemistry

157

TU KAISERSLAUTERN DEPARTMENT OF CHEMISTRY  

E-Print Network (OSTI)

TU KAISERSLAUTERN DEPARTMENT OF CHEMISTRY - STUDY GUIDE - H Rb Sr K Ca ...Mn Fe... ONC He P S Br Kr .................................................................................................22 FOOD CHEMISTRY AND TOXICOLOGY: JUN.-Prof. Dr. M. Esselen...............................................................................24 FOOD CHEMISTRY AND TOXICOLOGY: Prof. Dr. E. Richling

Madlener, Klaus

158

Direct and semi-direct aerosol effects of Southern African1 biomass burning aerosol2  

E-Print Network (OSTI)

1 Direct and semi-direct aerosol effects of Southern African1 biomass burning aerosol2 Naoko effects of biomass burning aerosols from Southern African fires9 during July-October are investigated region the overall TOA radiative effect from the23 biomass burning aerosols is almost zero due

Wood, Robert

159

NWChem and Actinide Chemistry  

NLE Websites -- All DOE Office Websites (Extended Search)

ACTINIDE CHEMISTRY MEETS COMPUTATION ACTINIDE CHEMISTRY MEETS COMPUTATION Capturing how contaminants migrate across groundwater-surface water inter- faces is a challenge that researchers at the Department of Energy's EMSL-the Environmental Molecular Sciences Laboratory-are rising to. This challenge, a top priority for waste cleanup efforts at the Hanford Site in Richland, Washington, and other parts of the DOE weapons complex, is being addressed using NWChem, a computational chemistry package developed at EMSL that is designed to run on high-performance parallel supercomputers, such as EMSL's Chinook. NWChem is enabling breakthrough discoveries in actinide behavior and chemistry, in part because it allows researchers to accurately model the dynamical formation, speciation, and redox chemistry of actinide complexes in realistic complex mo-

160

ARM - Evaluation Product - Organic Aerosol Component VAP  

NLE Websites -- All DOE Office Websites (Extended Search)

ProductsOrganic Aerosol Component VAP ProductsOrganic Aerosol Component VAP Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : Organic Aerosol Component VAP 2011.01.08 - 2012.03.24 Site(s) SGP General Description Organic aerosol (OA, i.e., the organic fraction of particles) accounts for 10-90% of the fine aerosol mass globally and is a key determinant of aerosol radiative forcing. But atmospheric OA is poorly characterized and its life cycle insufficiently represented in models. As a result, current models are unable to simulate OA concentrations and properties. This deficiency represents a large source of uncertainty in the quantification of aerosol direct and indirect effects and the prediction of future climate change. The Organic Aerosol Component (OACOMP) value-added product (VAP) uses

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

ARM - Field Campaign - Fall 1997 Aerosol IOP  

NLE Websites -- All DOE Office Websites (Extended Search)

Aerosol IOP Aerosol IOP Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Fall 1997 Aerosol IOP 1997.09.15 - 1997.10.05 Lead Scientist : Stephen Schwartz For data sets, see below. Summary The Aerosol IOP was highlighted by the Gulfstream-1 aircraft flying clear-sky aerosol missions over the Central Facility to study the effect of aerosol loading on clear sky radiation fields, with weather particularly favorable for these flights during the first and third weeks of the IOP. A secondary but important goal of this IOP was to fly cloudy-sky missions over the Central Facility to study the effect of aerosol loading on cloud microphysics, and the effect of the microphysics on cloud optical properties. The Gulfstream obtained aerosol data in support of some of the

162

Reflective Aerosols and the Greenhouse Effect  

Science Journals Connector (OSTI)

The contributions of atmospheric aerosols to add to either a climate-warming effect or climate-cooling effect depend on the chemical composition of the aerosol and the local environment. The best estimation is...

Kathryn E. Kautzman

2014-07-01T23:59:59.000Z

163

Antiviral therapy with small particle aerosols  

Science Journals Connector (OSTI)

The generation and use of small particle aqueous aerosols (1.23 µm aerodynamic mass median diameter, GSD=2.0 µm) containing ribavirin is described. Administered via aerosol, ribavirin will be deposited rather ...

V. Knight; B. Gilbert

1988-12-01T23:59:59.000Z

164

E-Print Network 3.0 - airborne aerosol prediction Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

profiles of aerosol extinction and optical depth Evaluate predictions from aerosol transport... aerosol measurements. Comparison of AOT ... Source: Brookhaven National...

165

Detecting bioterrorism: Is chemistry enough?  

NLE Websites -- All DOE Office Websites (Extended Search)

Detecting bioterrorism: Is chemistry enough? Detecting bioterrorism: Is chemistry enough? In an online webinar, Kristin Omberg will offer discussion on the possibilities and...

166

2, 20952131, 2002 Below-cloud aerosol  

E-Print Network (OSTI)

). In addition, the understanding of wet removal processes remains crucial in local and regional pollutionACPD 2, 2095­2131, 2002 Below-cloud aerosol removal C. Andronache Title Page Abstract Introduction-cloud aerosol removal by rainfall for observed aerosol size distributions C. Andronache Boston College, Chestnut

Paris-Sud XI, Université de

167

DUAL ORIGIN OF AEROSOLS IN TITAN'S DETACHED HAZE LAYER  

SciTech Connect

We have analyzed scattered light profiles from the Cassini Imaging Science Subsystem, taken at the limb and at several large phase angles. We also used results from an occultation observed by Ultraviolet Imaging Spectrograph in the ultraviolet. We found that particles responsible for the scattering in the detached haze have an effective radius around 0.15 {mu}m and the aerosol size distribution follows a power law (exponent about -4.5). We discuss these results along with microphysical constraints and thermal equilibrium of the detached haze, and we conclude that only a strong interaction with atmospheric dynamics can explain such a structure.

Cours, T.; Burgalat, J.; Rannou, P. [Groupe de Spectrometrie Moleculaire et Atmospherique (GSMA), CNRS UMR-6089, Universite de Reims Champagne-Ardenne, 51687 Reims Cedex 2 (France); Rodriguez, S.; Brahic, A. [Laboratoire AIM, Universite Paris 7, CNRS UMR-7158, CEA-Saclay/DSM/IRFU/SAp, 91191 Gif/Yvette (France); West, R. A., E-mail: thibaud.cours@univ-reims.fr [Jet Propulsion Laboratory M/S 169-237, Pasadena, CA 91109 (United States)

2011-11-10T23:59:59.000Z

168

Emission Controls Versus Meteorological Conditions in Determining Aerosol Concentrations in Beijing during the 2008 Olympic Games  

SciTech Connect

A series of emission control measures were undertaken in Beijing and the adjacent provinces in China during the 2008 Beijing Olympic Games on August 8th-24th, 2008. This provides a unique opportunity for investigating the effectiveness of emission controls on air pollution in Beijing. We conducted a series of numerical experiments over East Asia for the period of July to September 2008 using a coupled meteorology-chemistry model (WRF-Chem). Model can generally reproduce the observed variation of aerosol concentrations. Consistent with observations, modeled concentrations of aerosol species (sulfate, nitrate, ammonium, black carbon, organic carbon, total particulate matter) in Beijing were decreased by 30-50% during the Olympic period compared to the other periods in July and August in 2008 and the same period in 2007. Model results indicate that emission controls were effective in reducing the aerosol concentrations by comparing simulations with and without emission controls. However, our analysis suggests that meteorological conditions (e.g., wind direction and precipitation) are at least as important as emission controls in producing the low aerosol concentrations appearing during the Olympic period. Transport from the regions surrounding Beijing determines the temporal variation of aerosol concentrations in Beijing. Based on the budget analysis, we suggest that emission control strategy should focus on the regional scale instead of the local scale to improve the air quality over Beijing.

Gao, Yi; Liu, Xiaohong; Zhao, Chun; Zhang, Meigen

2011-12-12T23:59:59.000Z

169

ARM - Measurement - Aerosol optical depth  

NLE Websites -- All DOE Office Websites (Extended Search)

depth depth ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Aerosol optical depth A measure of how much light aerosols prevent from passing through a column of atmosphere. Categories Aerosols Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments HSRL : High Spectral Resolution Lidar MPL : Micropulse Lidar MFRSR : Multifilter Rotating Shadowband Radiometer NIMFR : Normal Incidence Multifilter Radiometer Field Campaign Instruments AOS-PMFOV : Acoustical Optical Spectrometer-Photometer with Multiple

170

ARM - Measurement - Aerosol optical properties  

NLE Websites -- All DOE Office Websites (Extended Search)

properties properties ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Aerosol optical properties The optical properties of aerosols, including asymmetry factor, phase-function, single-scattering albedo, refractive index, and backscatter fraction. Categories Aerosols Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CSPHOT : Cimel Sunphotometer NEPHELOMETER : Nephelometer Field Campaign Instruments AOS-PMFOV : Acoustical Optical Spectrometer-Photometer with Multiple

171

ARM - Measurement - Aerosol backscattered radiation  

NLE Websites -- All DOE Office Websites (Extended Search)

backscattered radiation backscattered radiation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Aerosol backscattered radiation The scattering of radiant energy into the hemisphere of space bounded by a plane normal to the direction of the incident radiation and lying on the same side as the incident ray. Categories Aerosols Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AOS : Aerosol Observing System MPL : Micropulse Lidar NEPHELOMETER : Nephelometer

172

I. Required core Chemistry Courses (1905 & 1925) Chemistry  

E-Print Network (OSTI)

Advisor: Advisee: I. Required core Chemistry Courses (1905 & 1925) Chemistry CH 111 PY 211 _____ PY 212 _____ (or PY 242 _____ or PY 252 ______) II. Chemistry Options (one required) 1905 (Concentration in Chemistry) Option A (2 advanced CH courses, 401 or higher, only one may

173

National Chemistry Week Theme: "Candy: The Sweet Side of Chemistry"  

E-Print Network (OSTI)

National Chemistry Week Theme: "Candy: The Sweet Side of Chemistry" Super Science Saturday Saturday-on chemistry and science demonstrations! All students & families are welcome! Fun & educational for all ages! Sponsored by: American Chemical Society LSU Department of Chemistry LSU Athletic Department Free admission

Stephens, Jacqueline

174

Chemistry in Bioinformatics  

E-Print Network (OSTI)

F R O N T M A T T E R Chemistry in Bioinformatics Peter Murray?Rust,1 John B. O. Mitchell,1 and Henry S. Rzepa2 1 Unilever Centre for Molecular Science Informatics, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge. CB2... 1EW, UK. 2 Department of Chemistry, Imperial College London, SW7 2AY, UK. Abstract Chemical information is now seen as critical for most areas of life sciences. But unlike Bioinformatics, where data is Openly available and freely re...

Murray-Rust, Peter; Mitchell, John B O; Rzepa, Henry S

2005-05-19T23:59:59.000Z

175

Multi-year Satellite and Surface Observations of AOD in support of Two-Column Aerosol Project (TCAP) Field Campaign  

SciTech Connect

We use combined multi-year measurements from the surface and space for assessing the spatial and temporal distribution of aerosol properties within a large (~400x400 km) region centered on Cape Cod, Massachusetts, along the East Coast of the United States. The ground-based Aerosol Robotic Network (AERONET) measurements at Martha’s Vineyard Coastal Observatory (MVCO) site and Moderate Resolution Imaging Spectrometer (MODIS) sensors on board the Terra and Aqua satellites provide horizontal and temporal variations of aerosol optical depth, while the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) offers the altitudes of aerosol-layers. The combined ground-based and satellite measurements indicated several interesting features among which were the large differences in the aerosol properties observed in July and February. We applied the climatology of aerosol properties for designing the Two-Column Aerosol Project (TCAP), which is supported by the U.S. Department of Energy’s (DOE’s) Atmospheric Radiation Measurement (ARM) Program. The TCAP field campaign involves 12-month deployment (started July 1, 2012) of the ground-based ARM Mobile Facility (AMF) and Mobile Aerosol Observing System (MAOS) on Cape Cod and complimentary aerosol observations from two research aircraft: the DOE Gulfstream-1 (G-1) and the National Aeronautics and Space Administration (NASA) B200 King Air. Using results from the coordinated G-1 and B200 flights during the recent (July, 2012) Intensive Observation Period, we demonstrated that the G-1 in situ measurements and B200 active remote sensing can provide complementary information on the temporal and spatial changes of the aerosol properties off the coast of North America.

Kassianov, Evgueni I.; Chand, Duli; Berg, Larry K.; Fast, Jerome D.; Tomlinson, Jason M.; Ferrare, R.; Hostetler, Chris A.; Hair, John

2012-11-01T23:59:59.000Z

176

Chemistry, Reservoir, and Integrated Models  

Energy.gov (U.S. Department of Energy (DOE))

Below are the project presentations and respective peer review results for Chemistry, Reservoir and Integrated Models.

177

WESTERN UNIVERSITY DEPARTMENT OF CHEMISTRY  

E-Print Network (OSTI)

WESTERN UNIVERSITY DEPARTMENT OF CHEMISTRY The Department of Chemistry invites applications for a probationary (tenure-track) faculty position at the rank of Assistant Professor in Inorganic Chemistry, externally funded research program, and to develop and teach innovative courses in chemistry

Sinnamon, Gordon J.

178

The Entire Chemistry Archive  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry Archives Chemistry Archives Chemistry Archives, Since November 1991 Table of Contents: When entropy = 0, does atomic motion stop? When H2O and methanol mix Heavy element names Radon Bee's wax CFC's and ozone depletion Solar cells and Phosphorous vs Chlorophyll B Aromaticity Hypercolor t-shirt Bonds for tie dye Soda POP General chemistry questions Tyndall Effect Silicon chips Molecules and cancer Acetylene safety Picric acid Buckyballs Piezoelectric Weak pennies Extracting fats Anti-oxidants Batteries & chemicals Hydrogen, can it be an isotope? Can soda conduct electricity? pH What is the biggest molecule? Smallest molecule Metallic zinc as catalyst Bond order in carbon bonds Packing of crystal structure Advantages, disadvantages of chloroform Coloring oil Free-radicals Acid-Base reaction

179

Chemistry Department Seminar Archive  

NLE Websites -- All DOE Office Websites (Extended Search)

Archive of Chemistry Department Seminars Archive of Chemistry Department Seminars See also: recent Department seminars Friday, July 27, 2012 "Precise Design of Donor-Acceptor Interface based on Microphase Segregated Nanostructure" Sadayuki Asaoka, Kyoto Institute of Technology Hosted by Dr. John Miller 11:00 AM, Room 300, Chemistry Bldg. 555 Thursday, April 26, 2012 ""NOx Catalysis from the Bottom Up"" Dr. William F. Schneider, Dept. of Chemical and Biomolecular Engineering, University of Notre Dame Hosted by Ping Liu 11:00 AM, Hamilton Seminar Room, Bldg. 555 Friday, April 13, 2012 "High-energy resolution x-ray emission spectroscopy for catalysis and materials chemistry" Olga Safonova, Swiss Light Source & Energy Dept. at Paul Scherrer Institute Hosted by Dario Stacchiola

180

Chemistry Industry in Egypt  

Science Journals Connector (OSTI)

Chemistry Industry in Egypt ... FROM antiquity the Egyptian economy has been predominately agricultural. ... Nevertheless, it is most probable that the ancient Egyptians were the world's first practical or industrial chemists. ...

1953-08-10T23:59:59.000Z

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

Chemistry 455 Chemical Nanotechnology  

E-Print Network (OSTI)

Chemistry 455 Chemical Nanotechnology 4 units Prof. Richard Brutchey, Fall 2014 (Lecture = 12:00�12:50 pm MWF) CHEM 455 is an upper-division undergraduate course in Chemical Nanotechnology. The intent

Rohs, Remo

182

Agricultural Chemistry and Bioenergy  

Science Journals Connector (OSTI)

Agricultural Chemistry and Bioenergy ... Renewed interest in converting biomass to biofuels such as ethanol, other forms of bioenergy, and bioenergy byproducts or coproducts of commercial value opens opportunities for chemists, including agricultural chemists and related disciplines. ...

William J. Orts; Kevin M. Holtman; James N. Seiber

2008-05-13T23:59:59.000Z

183

Physical chemistry - Thermodynamics  

Science Journals Connector (OSTI)

Physical chemistry - Thermodynamics ... A style of question that allows the instructor of thermodynamics to cover a wide range of material at varying levels of achievement in a reasonable period of time. ... Thermodynamics ...

Jack Richlin

1982-01-01T23:59:59.000Z

184

Green Chemistry COMMUNICATION  

E-Print Network (OSTI)

Green Chemistry COMMUNICATION Cite this: Green Chem., 2013, 15, 2060 Received 8th April 2013 5042, Australia. E-mail: colin.raston@flinders.edu.au; Tel: +08 8021 7958 2060 | Green Chem., 2013, 15

185

SC e-journals, Chemistry  

Office of Scientific and Technical Information (OSTI)

Chemistry Chemistry Accounts of Chemical Research Accreditation and Quality Assurance ACS Chemical Biology ACS Nano Acta Biotheoretica Acta Materialia Acta Neuropathologica Adsorption Advanced Engineering Materials Advances in Physical Chemistry - OAJ AlChE Journal Amino Acids Analyst Analytica Chimica Acta Analytical and Bioanalytical Chemistry Analytical Biochemistry Analytical Chemistry Analytical Sciences - OAJ Angewandte Chemie - International Edition Annual Review of Analytical Chemistry Annual Review of Biochemistry Annual Review of Biophysics Annual Review of Materials Research Annual Review of Physical Chemistry Antimicrobial Agents and Chemotherapy Applied Geochemistry Applied Radiation and Isotopes Applied Surface Science Applied Thermal Engineering Aquatic Geochemistry

186

Review of models applicable to accident aerosols  

SciTech Connect

Estimations of potential airborne-particle releases are essential in safety assessments of nuclear-fuel facilities. This report is a review of aerosol behavior models that have potential applications for predicting aerosol characteristics in compartments containing accident-generated aerosol sources. Such characterization of the accident-generated aerosols is a necessary step toward estimating their eventual release in any accident scenario. Existing aerosol models can predict the size distribution, concentration, and composition of aerosols as they are acted on by ventilation, diffusion, gravity, coagulation, and other phenomena. Models developed in the fields of fluid mechanics, indoor air pollution, and nuclear-reactor accidents are reviewed with this nuclear fuel facility application in mind. The various capabilities of modeling aerosol behavior are tabulated and discussed, and recommendations are made for applying the models to problems of differing complexity.

Glissmeyer, J.A.

1983-07-01T23:59:59.000Z

187

Chemistry Student Handbook College of Science  

E-Print Network (OSTI)

Chemistry Student Handbook College of Science React. Science #12;Contents 2 Welcome to the Department of Chemistry 2 Course Advice 3 What is Chemistry? 4 Career Profiles in Chemistry 5 An Undergraduate Degree in Chemistry 6 Chemistry Streams 13 Chemistry Honours Programme 14 Research

Hickman, Mark

188

Observing chemistry of atmospheric particles | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

Observing chemistry of atmospheric particles Observing chemistry of atmospheric particles Review article reached the International Reviews in Physical Chemistry most read list NULL...

189

Chemistry at the Dirac Point of Graphene  

E-Print Network (OSTI)

Haddon, R. C. Covalent Chemistry for Graphene Electronics.P. K. ; Yang, J. X. The Chemistry of Graphene. J. Mater.R. C. Organometallic Chemistry of Extended Periodic ?-

Sarkar, Santanu

2013-01-01T23:59:59.000Z

190

Chemistry and Transport - Combustion Energy Frontier Research...  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry and Transport Chemistry and Transport The overall goal of the flame chemistry working group is to obtain fundamental combustion and emission properties of low and high...

191

“Greening Up” Cross-Coupling Chemistry  

E-Print Network (OSTI)

today. Insofar as green chemistry is concerned, however,Handbook of organopalladium chemistry for organic synthesis.Hanefeld U (2007) Green chemistry and catalysis. Wiley-VCH,

Lipshutz, Bruce H.; Abela, Alexander R.; Boškovi?, Žarko V.; Nishikata, Takashi; Duplais, Christophe; Krasovskiy, Arkady

2010-01-01T23:59:59.000Z

192

CMR: Chemistry and Metallurgy Research Facility  

NLE Websites -- All DOE Office Websites (Extended Search)

CMR: Chemistry and Metallurgy Research Facility CMR: Chemistry and Metallurgy Research Facility The Los Alamos National Laboratory (LANL) Chemistry and Metallurgy Research (CMR)...

193

Examination of the Effects of Sea Salt Aerosols on Southeast Texas Ozone and Secondary Organic Aerosol  

E-Print Network (OSTI)

of this research is to examine sea salt aerosols and their impact on polluted environments. Sea salt aerosols act as Cloud Condensation Nuclei (CCN) as well as providing a surface for heterogeneous reactions. Such reactions have implications for trace gases...

Benoit, Mark David

2013-02-06T23:59:59.000Z

194

Limits to the Aerosol Indirect Radiative Effect Derived from Observations of Ship Tracks  

E-Print Network (OSTI)

reflectivities. #12;3 In recent years, simulations of the aerosol indirect effect in general circulation models in satellite imagery data. Images at 3.7 µm are used in a semi-automated procedure for identifying polluted concentrations of cloud condensation nuclei (CCN) and more cloud droplets. Because droplet formation is rapid

195

INTRODUCTION Aerosol information derived from geostationary remote sensing instruments can comple-  

E-Print Network (OSTI)

- ments those obtained from polar orbiting sensors (e.g. MODIS, MERIS, or AVHRR). The high scanning, and a background aero- sol (AOD=0.05) using meteorological auxiliary data and the radiative transfer code SMAC , assuming continental aerosol model. Compilation of background composites (clear sky image) of the lowest

Wunderle, Stefan

196

Guide to Chemistry Dept  

NLE Websites -- All DOE Office Websites (Extended Search)

Guide to the Chemistry Building Guide to the Chemistry Building The main Chemistry building (Building 555) has been designed to make adequate facilities available for research and to provide an informal atmosphere for free exchange among Department members. There are public areas, shared laboratories, shared office space, and privately assigned places. A newcomer to the building should become familiar with locations of the key areas. Stairs and Elevators - Building 555 The central main staircase and a passenger elevator are for personnel traffic only. Each wing has a staircase. There is a rear staircase for traffic directly to service areas. The building has a freight elevator at the rear core. Flammable material, chemicals, solvents, gas cylinders, etc. can be transported in the freight elevator but not in the passenger elevator. Do not ride with gas cylinders or dewars charged with cryogens as the presence of these in a confined space introduces a suffocation hazard.

197

Reaction chemistry of cerium  

SciTech Connect

It is truly ironic that a synthetic organic chemist likely has far greater knowledge of the reaction chemistry of cerium(IV) than an inorganic colleague. Cerium(IV) reagents have long since been employed as oxidants in effecting a wide variety of organic transformations. Conversely, prior to the late 1980s, the number of well characterized cerium(IV) complexes did not extend past a handful of known species. Though in many other areas, interest in the molecular chemistry of the 4f-elements has undergone an explosive growth over the last twenty years, the chemistry of cerium(IV) has for the most part been overlooked. This report describes reactions of cerium complexes and structure.

NONE

1997-01-01T23:59:59.000Z

198

Home / Chemistry / Chemistry (general) Angewandte Chemie International Edition  

E-Print Network (OSTI)

JOURNALS Home / Chemistry / Chemistry (general) Angewandte Chemie International Edition See Also: Angewandte Chemie Copyright © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim View all previous titles

Jo, Moon-Ho

199

ARM - PI Product - Direct Aerosol Forcing Uncertainty  

NLE Websites -- All DOE Office Websites (Extended Search)

ProductsDirect Aerosol Forcing Uncertainty ProductsDirect Aerosol Forcing Uncertainty Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : Direct Aerosol Forcing Uncertainty Site(s) NSA SGP TWP General Description Understanding sources of uncertainty in aerosol direct radiative forcing (DRF), the difference in a given radiative flux component with and without aerosol, is essential to quantifying changes in Earth's radiation budget. We examine the uncertainty in DRF due to measurement uncertainty in the quantities on which it depends: aerosol optical depth, single scattering albedo, asymmetry parameter, solar geometry, and surface albedo. Direct radiative forcing at the top of the atmosphere and at the surface as well as sensitivities, the changes in DRF in response to unit changes in

200

ARM - Field Campaign - Two-Column Aerosol Project (TCAP)  

NLE Websites -- All DOE Office Websites (Extended Search)

govCampaignsTwo-Column Aerosol Project (TCAP) govCampaignsTwo-Column Aerosol Project (TCAP) Campaign Links TCAP website Related Campaigns Two-Column Aerosol Project (TCAP): Field Evaluation of Real-time Cloud OD Sensor TWST 2013.04.15, Scott, AMF Two-Column Aerosol Project (TCAP): Winter Aerosol Effects on Cloud Formation 2013.02.04, Cziczo, AMF Two-Column Aerosol Project (TCAP): CU GMAX-DOAS Deployment 2012.07.15, Volkamer, AMF Two-Column Aerosol Project (TCAP): Aerosol Light Extinction Measurements 2012.07.15, Dubey, AMF Two-Column Aerosol Project (TCAP): Aerial Campaign 2012.07.07, Berg, AAF Two-Column Aerosol Project (TCAP): Aerodynamic Particle Sizer 2012.07.01, Berg, AMF Two-Column Aerosol Project (TCAP): KASPRR Engineering Tests 2012.07.01, Mead, AMF Two-Column Aerosol Project (TCAP): Airborne HSRL and RSP Measurements

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

Effects of anthropogenic activities on the molecular composition of urban organic aerosols: an ultrahigh resolution mass spectrometry study  

E-Print Network (OSTI)

of Chemistry, Aarhus University, Aarhus, DK-8000, Denmark 11 4Department of Analytical Chemistry, Ghent University, Krijgslaan 281, S12, BE-9000 12 Ghent, Belgium 13 5Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, BE-14... ). 95 The objective of the current study is to apply nanoESI UHRMS to determine the molecular 96 composition of urban PM2.5 (particles with ?2.5µm). Aerosol samples were collected at the 97 industrial site in Cork Ireland during summer with the aim...

Kourtchev, I.; O'Connor, I. P.; Giorio, C.; Fuller, S.; Kristenen, K.; Maenhaut, W.; Wenger, J. C.; Sodeau, J. R.; Glasius, M.; Kalberer, M.

2014-02-23T23:59:59.000Z

202

Direct and semidirect aerosol effects of southern African biomass burning aerosol  

E-Print Network (OSTI)

Direct and semidirect aerosol effects of southern African biomass burning aerosol Naoko Sakaeda,1 2011; published 21 June 2011. [1] Direct and semidirect radiative effects of biomass burning aerosols static stability. Over the entire region the overall TOA radiative effect from the biomass burning

Wood, Robert

203

Separating Cloud Forming Nuclei from Interstitial Aerosol  

SciTech Connect

It has become important to characterize the physicochemical properties of aerosol that have initiated the warm and ice clouds. The data is urgently needed to better represent the aerosol-cloud interaction mechanisms in the climate models. The laboratory and in-situ techniques to separate precisely the aerosol particles that act as cloud condensation nuclei (CCN) and ice nuclei (IN), termed as cloud nuclei (CN) henceforth, have become imperative in studying aerosol effects on clouds and the environment. This review summarizes these techniques, design considerations, associated artifacts and challenges, and briefly discusses the need for improved designs to expand the CN measurement database.

Kulkarni, Gourihar R.

2012-09-12T23:59:59.000Z

204

Carbonaceous Aerosol Study Using Advanced Particle Instrumentation  

E-Print Network (OSTI)

particles from the combustion of biomass fuels. Environ.range transport of biomass combustion aerosols. Environ.during the open combustion of biomass in the laboratory, J.

Qi, Li

2010-01-01T23:59:59.000Z

205

Comparative Analysis of Urban Atmospheric Aerosol by Particle...  

NLE Websites -- All DOE Office Websites (Extended Search)

Analysis of Urban Atmospheric Aerosol by Particle-Induced X-ray Emission (PIXE), Proton Elastic Scattering Analysis Comparative Analysis of Urban Atmospheric Aerosol by...

206

The Two-Column Aerosol Project Definitions TCAP Educational  

NLE Websites -- All DOE Office Websites (Extended Search)

What's the big deal about aerosols? The Two-Column Aerosol Project Definitions TCAP Educational Outreach Activity About ARM: The Atmospheric Radiation Measurement (ARM) Climate...

207

Reduction in biomass burning aerosol light absorption upon humidificat...  

NLE Websites -- All DOE Office Websites (Extended Search)

in biomass burning aerosol light absorption upon humidification: Roles of inorganically-induced hygroscopicity, Reduction in biomass burning aerosol light absorption upon...

208

The Indirect and Semi-Direct Aerosol Campaign  

SciTech Connect

Research projects like the Indirect and Semi-Direct Aerosol Campaign, or ISDAC, increase our knowledge of atmospheric aerosol particles and cloud physics.

Ghan, Steve

2014-03-24T23:59:59.000Z

209

Overview of the COPS Aerosol and Cloud Microphysics (ACM) Subgroup...  

NLE Websites -- All DOE Office Websites (Extended Search)

properties of orographically induced clouds and how do these depend on dynamics, thermodynamics, and aerosol microphysics? * What is the role of aerosols and changing cloud...

210

Optical, physical, and chemical properties of springtime aerosol...  

NLE Websites -- All DOE Office Websites (Extended Search)

Optical, physical, and chemical properties of springtime aerosol over Barrow Alaska in 2008. Optical, physical, and chemical properties of springtime aerosol over Barrow Alaska in...

211

Recovery Boiler Corrosion Chemistry  

E-Print Network (OSTI)

11/13/2014 1 Recovery Boiler Corrosion Chemistry Sandy Sharp and Honghi Tran Symposium on Corrosion of a recovery boiler each cause their own forms of corrosion and cracking Understanding the origin of the corrosive conditions enables us to operate a boiler so as to minimize corrosion and cracking select

Das, Suman

212

Green Chemistry TUTORIAL REVIEW  

E-Print Network (OSTI)

Green Chemistry TUTORIAL REVIEW Cite this: Green Chem., 2014, 16, 1740 Received 16th October 2013: Deep eutectic solvents, new media for lipase catalyzed reactions? Through his research he has pub- lished several journal papers to assess and develop the potential of this new "green" reaction medium

Boyer, Edmond

213

Conference on phosphorus chemistry  

Science Journals Connector (OSTI)

The International Conference on Phosphorus Chemistry will be held on June 1-5,1981, in Durham, N.C. It is a continuation of the series of international conferences which last assembled in Halle, West Germany, in 1979. The conference will be held at Duke ...

1980-12-01T23:59:59.000Z

214

Frontiers in Chemistry  

Science Journals Connector (OSTI)

...can mediate such solar energy-promoted...compressibility, specific heat, interfacial tension-all...symmetry-based analyses have assisted experimen-talists...by tuning the HF pump laser to different...polarization of the pump laser output to select...thereby causing laser-assisted chemistry to occur...

Robert M Joyce

1980-07-04T23:59:59.000Z

215

How dangerous is chemistry?  

Science Journals Connector (OSTI)

... Is chemistry really so dangerous? Those responsible for the safety of research labs say such stories may perpetuate out- ... says Alan Kendall, safety officer at the University of Oxford, UK. Swathes of occupational-health legislation in the 1970s, which established, for example, the US government's Occupational ...

2006-05-31T23:59:59.000Z

216

Assessing regional scale predictions of aerosols, marine stratocumulus, and their interactions during VOCALS-REx using WRF-Chem  

SciTech Connect

In the recent chemistry version (v3.3) of the Weather Research and Forecasting (WRF-Chem) model, we have coupled the Morrison double-moment microphysics scheme with interactive aerosols so that full two-way aerosol-cloud interactions are included in simulations. We have used this new WRF-Chem functionality in a study focused on assessing predictions of aerosols, marine stratocumulus clouds, and their interactions over the Southeast Pacific using measurements from the VAMOS Ocean-Cloud-Atmosphere-Land Study Regional Experiment (VOCALS-REx) and satellite retrievals. This study also serves as a detailed analysis of our WRF-Chem simulations contributed to the VOCALS model Assessment (VOCA) project. The WRF-Chem 31-day (October 15-November 16, 2008) simulation with aerosol-cloud interactions (AERO hereafter) is also compared to a simulation (MET hereafter) with fixed cloud droplet number concentrations assumed by the default in Morrison microphysics scheme with no interactive aerosols. The well-predicted aerosol properties such as number, mass composition, and optical depth lead to significant improvements in many features of the predicted stratocumulus clouds: cloud optical properties and microphysical properties such as cloud top effective radius, cloud water path, and cloud optical thickness, and cloud macrostructure such as cloud depth and cloud base height. These improvements in addition to the aerosol direct and semi-direct effects, in turn, feed back to the prediction of boundary-layer characteristics and energy budgets. Particularly, inclusion of interactive aerosols in AERO strengths temperature and humidity gradients within capping inversion layer and lowers the MBL depth by 150 m from that of the MET simulation. Mean top-of-the-atmosphere outgoing shortwave fluxes, surface latent heat, and surface downwelling longwave fluxes are in better agreement with observations in AERO, compared to the MET simulation. Nevertheless, biases in some of the simulated meteorological quantities (e.g., MBL temperature and humidity over the remote ocean) and aerosol quantities (e.g., overestimations of supermicron sea salt mass) might affect simulated stratocumulus and energy fluxes over the SEP, and require further investigations. Although not perfect, the overall performance of the regional model in simulating mesoscale aerosol-cloud interactions is encouraging and suggests that the inclusion of spatially varying aerosol characteristics is important when simulating marine stratocumulus over the southeastern Pacific.

Yang, Qing; Gustafson, William I.; Fast, Jerome D.; Wang, Hailong; Easter, Richard C.; Morrison, H.; Lee, Y.- N.; Chapman, Elaine G.; Spak, S. N.; Mena-Carrasco, M. A.

2011-12-02T23:59:59.000Z

217

Curriculum Vitae Department of Chemistry  

E-Print Network (OSTI)

Curriculum Vitae Yi Lu Department of Chemistry University of Illinois at Urbana-Champaign Urbana ___________________________________________________________________________________________________________________________________________________________ Yi Lu Department of Chemistry University of Illinois at Urbana-Champaign Urbana, Illinois 61801 EDUCATION University of California Los Angeles, CA Ph.D. in Chemistry 1987 - 1992 Peking University Peking

Braun, Paul

218

Curriculum Vitae Department of Chemistry  

E-Print Network (OSTI)

Curriculum Vitae Yi Lu Department of Chemistry University of Illinois at Urbana-Champaign Urbana ___________________________________________________________________________________________________________________________________________________________ Yi Lu Depfartment of Chemistry University of Illinois at Urbana-Champaign Urbana, Illinois 61801 EDUCATION University of California Los Angeles, CA Ph.D. in Chemistry 1987 - 1992 Peking University Peking

Braun, Paul

219

Chemistry Department Colloquium: Spring, 2012  

E-Print Network (OSTI)

Chemistry Department Colloquium: Spring, 2012 Friday, March 16; 3:30 Seminar Hall (room 1315 Chemistry) Lost in Translation: How Regulators Use Science and How Scientists Can Help Bridge Gaps Stephanie to combine her Chemistry background with a legal education to improve the use of science in environmental

Sheridan, Jennifer

220

THE COORDINATION CHEMISTRY OF METAL SURFACES  

E-Print Network (OSTI)

result 7 ' 30 u 31 in metal carbide cluster chemistry willin metal chemistry. Oxidation of the iron carbide cluster

Muetterties, Earl L.

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

Screen Electrode Materials & Cell Chemistries and Streamlining...  

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

Screen Electrode Materials & Cell Chemistries and Streamlining Optimization of Electrode Screen Electrode Materials & Cell Chemistries and Streamlining Optimization of Electrode...

222

Thermodynamics in the physical chemistry course  

Science Journals Connector (OSTI)

Thermodynamics in the physical chemistry course ... Provides suggestions for effectively integrating thermodynamics in the physical chemistry course. ... Thermodynamics ...

James L. Dye

1965-01-01T23:59:59.000Z

223

Chemistry and Materials Science at NERSC  

NLE Websites -- All DOE Office Websites (Extended Search)

Highlights NERSC Citations HPC Requirements Reviews Home Science at NERSC Chemistry & Materials Science Chemistry & Materials Science Simulation plays an indispensable...

224

Chemistry Dept. Research Programs  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry Department Overview: Chemistry Department Overview: While the subjects of chemical research in the Chemistry Department are diverse, several predominant themes span traditional research fields and research groups. These themes include: artificial photosynthesis, charge transfer for energy conversion, chemistry with ionizing radiation, catalysis and surface science, nanoscience, combustion, and nuclear chemistry. Artificial Photosynthesis This program addresses major issues hindering progress in photoinduced catalytic reduction of carbon dioxide, water splitting, and small molecule activation using an integrated experimental and theoretical approach that offers fundamental insights into the underlying photochemical processes. One thrust investigates factors controlling reductive half-reactions. Among these are: (1) searching for visible-light absorbers to couple with electron transfer and/or catalytic processes; (2) avoiding high-energy intermediates through multi-electron, multi-proton processes; (3) using earth-abundant metals, or metal complexes that have bio-inspired or non-innocent ligands to achieve low-energy pathways via second-coordination sphere interactions or redox leveling; (4) adopting water as the target solvent and the source of protons and electrons; and (5) immobilizing catalysts on electrode or semiconductor surfaces for better turnover rates and frequencies. Another thrust investigates water oxidation, focusing on photoelectrolysis processes occurring in band-gap-narrowed semiconductor and catalyst components by: (i) tuning semiconductors to control their light-harvesting and charge-separation abilities; (ii) developing viable catalysts for the four-electron water oxidation process; (iii) immobilizing the homogenous catalysts and metal oxide catalysts on electrodes and/or metal-oxide nanoparticles; and (iv) exploring the interfacial water-decomposition reactions using carriers generated by visible-light irradiation with the goal of understanding semiconductorccatalystcwater charge transport.

225

Atomic-resolution characterization of interface structure and chemistry in the STEM  

SciTech Connect

Combination of Z-contrast imaging and EELS (electron energy loss spectroscopy) allows the local structure and chemistry of interfaces to be determined on the atomic scale. In this paper, these two complementary techniques are used to analyze the structure and chemistry of a nominally 25 degree [100] symmetric tilt boundary in an electroceramic SrTiO{sub 3} bicrystal.

Browning, N.D.; McGibbon, M.M.; McGibbon, A.J.; Chisholm, M.F.; Pennycook, S.J. [Oak Ridge National Lab., TN (United States); Ravikumar, V.; Dravid, V.P. [Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering

1994-03-01T23:59:59.000Z

226

The Opposed Migration Aerosol Classifier (OMAC)  

NLE Websites -- All DOE Office Websites (Extended Search)

The Opposed Migration Aerosol Classifier (OMAC) The Opposed Migration Aerosol Classifier (OMAC) Speaker(s): Harmony Gates Date: February 22, 2007 - 12:00pm Location: 90-4133 Seminar Host/Point of Contact: Melissa Lunden A new differential mobility classifier will be described. The instrument classifies aerosol particles in a channel flow between porous (or screen) electrodes. The aerosol enters the channel parallel to the porous electrodes, while a larger, particle-free cross-flow enters through one of the porous electrode. A potential difference between electrodes causes the charged aerosol particles to migrate upstream against the cross-flow. Only particles whose upward migration velocity balances the cross flow will be transmitted along the path of the classifier. Simulations of the OMAC show that it should give the same resolution at the traditional

227

Chemistry Department Directory  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry Staff Directory Chemistry Staff Directory Last Name, First Phone E-mail Note: All listed phone extensions are in the format of (631) 344-xxxx. Adzic, Radoslav 4522 adzic@bnl.gov Akimov, Alexey No Entry akimov@bnl.gov An, Wei 4317 weian@bnl.gov Anselmini, James 4399 anselmini@bnl.gov Baber, Ashleigh 4317 ababer@bnl.gov Badiei, Yosra 4360 ybadiei@bnl.gov Bak, Seong Min BAK 3663 smbak@bnl.gov Bakalis, Jin No Entry jbakalis@bnl.gov Bird, Matthew 4331 mbird@bnl.gov Cabelli, Diane 4361 cabelli@bnl.gov Camillone III, Nicholas 4412 nicholas@bnl.gov Chen, Jingguang 2655 jgchen@bnl.gov Chen, Wei-Fu 4360 wfchen@bnl.gov Concepcion, Javier 4369 jconcepc@bnl.gov Cook, Andrew 4782 acook@bnl.gov Cumming, James 4338 cumming@bnl.gov Duan, Lele 4357 lduan@bnl.gov Ertem, Mehmed No Entry mzertem@bnl.gov

228

ADVANCED CHEMISTRY BASINS MODEL  

SciTech Connect

The advanced Chemistry Basin Model project has been operative for 48 months. During this period, about half the project tasks are on projected schedule. On average the project is somewhat behind schedule (90%). Unanticipated issues are causing model integration to take longer then scheduled, delaying final debugging and manual development. It is anticipated that a short extension will be required to fulfill all contract obligations.

William Goddard III; Lawrence Cathles III; Mario Blanco; Paul Manhardt; Peter Meulbroek; Yongchun Tang

2004-05-01T23:59:59.000Z

229

Complementary Chemistry and Matched Materials | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Complementary Chemistry and Matched Materials Complementary Chemistry and Matched Materials Complementary Chemistry and Matched Materials November 15, 2013 - 1:45pm Addthis DNA linkers allow different kinds of nanoparticles to self-assemble and form relatively large-scale nanocomposite arrays. This approach allows for mixing and matching components for the design of multifunctional materials. | Image courtesy of Brookhaven National Laboratory. DNA linkers allow different kinds of nanoparticles to self-assemble and form relatively large-scale nanocomposite arrays. This approach allows for mixing and matching components for the design of multifunctional materials. | Image courtesy of Brookhaven National Laboratory. Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science What are the key facts?

230

Advanced Chemistry Basins Model  

SciTech Connect

The DOE-funded Advanced Chemistry Basin model project is intended to develop a public domain, user-friendly basin modeling software under PC or low end workstation environment that predicts hydrocarbon generation, expulsion, migration and chemistry. The main features of the software are that it will: (1) afford users the most flexible way to choose or enter kinetic parameters for different maturity indicators; (2) afford users the most flexible way to choose or enter compositional kinetic parameters to predict hydrocarbon composition (e.g., gas/oil ratio (GOR), wax content, API gravity, etc.) at different kerogen maturities; (3) calculate the chemistry, fluxes and physical properties of all hydrocarbon phases (gas, liquid and solid) along the primary and secondary migration pathways of the basin and predict the location and intensity of phase fractionation, mixing, gas washing, etc.; and (4) predict the location and intensity of de-asphaltene processes. The project has be operative for 36 months, and is on schedule for a successful completion at the end of FY 2003.

William Goddard; Mario Blanco; Lawrence Cathles; Paul Manhardt; Peter Meulbroek; Yongchun Tang

2002-11-10T23:59:59.000Z

231

Studying trends in biomass burning aerosol using the Absorbing Aerosol Index derived from GOME, SCIAMACHY, and GOME-2  

E-Print Network (OSTI)

Studying trends in biomass burning aerosol using the Absorbing Aerosol Index derived from GOME the resulting time series, we use tropospheric NO2 data as a reference in the regions dominated by biomass sensitive to desert dust aerosols (DDA) and biomass burning aerosols (BBA). See Figure 1. The AAI

Tilstra, Gijsbert

232

E-Print Network 3.0 - aerosol chemical composition Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Aerosol on Clouds Summary: chemical composition and mixing stateTime-Resolved Aerosol Collector CCSEMEDX (ASP) Single particle... Sizer CCN spectrum Aerosol absorptionDRI...

233

E-Print Network 3.0 - aerosol number distributions Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

inorganic composition PILS-IC Summary: 3563 nephelometers Aerosol number concentration CNC (TSI 3010, 3025) Aerosol size distribution DMA... and APS Non-volatile aerosol size...

234

Indirect and Semi-Direct Aerosol Campaign: The Impact of Arctic...  

NLE Websites -- All DOE Office Websites (Extended Search)

Aerosol Campaign: The Impact of Arctic Aerosols on Clouds . Abstract: A comprehensive dataset of microphysical and radiative properties of aerosols and clouds in the arctic...

235

E-Print Network 3.0 - aerosol jet system Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

-controlled laminar aerosol jets and their application for studying aerosol combustion processes Author(s): Shoshin Y... 2002 Times Cited: 6 48. Title: Exhaust aerosol of a...

236

CARES: Carbonaceous Aerosol and Radiative Effects Study Science Plan  

SciTech Connect

Carbonaceous aerosol components, which include black carbon (BC), urban primary organic aerosols (POA), biomass burning aerosols, and secondary organic aerosols (SOA) from both urban and biogenic precursors, have been previously shown to play a major role in the direct and indirect radiative forcing of climate. The primary objective of the CARES 2010 intensive field study is to investigate the evolution of carbonaceous aerosols of different types and their effects on optical and cloud formation properties.

Zaveri, RA; Shaw, WJ; Cziczo, DJ

2010-05-27T23:59:59.000Z

237

Henry Taube and Coordination Chemistry  

Office of Scientific and Technical Information (OSTI)

Henry Taube and Coordination Chemistry Henry Taube and Coordination Chemistry Resources with Additional Information Henry Taube Chuck Painter/Stanford News Service Henry Taube, a Marguerite Blake Wilbur Professor of Chemistry, Emeritus, at Stanford University, received the 1983 Nobel Prize in Chemistry "for his work on the mechanisms of electron transfer reactions, especially in metal complexes" Taube 'received a doctorate from the University of California-Berkeley in 1940 and was an instructor there from 1940-41. "I became deeply interested in chemistry soon after I came to Berkeley," Taube recalled. ... He joined the Cornell University faculty in 1941, becoming a naturalized United States citizen in 1942, and then moved in 1946 to the University of Chicago where he remained until 1961. A year later he joined the Stanford faculty as professor of chemistry, a position he held until 1986, when he became professor emeritus. ...

238

Capstone Depleted Uranium Aerosols: Generation and Characterization  

SciTech Connect

In a study designed to provide an improved scientific basis for assessing possible health effects from inhaling depleted uranium (DU) aerosols, a series of DU penetrators was fired at an Abrams tank and a Bradley fighting vehicle. A robust sampling system was designed to collect aerosols in this difficult environment and continuously monitor the sampler flow rates. Aerosols collected were analyzed for uranium concentration and particle size distribution as a function of time. They were also analyzed for uranium oxide phases, particle morphology, and dissolution in vitro. The resulting data provide input useful in human health risk assessments.

Parkhurst, MaryAnn; Szrom, Fran; Guilmette, Ray; Holmes, Tom; Cheng, Yung-Sung; Kenoyer, Judson L.; Collins, John W.; Sanderson, T. Ellory; Fliszar, Richard W.; Gold, Kenneth; Beckman, John C.; Long, Julie

2004-10-19T23:59:59.000Z

239

The role of chemistry in the utilization of nuclear energy  

Science Journals Connector (OSTI)

The role of chemistry in the utilization of nuclear energy ... Considers the topics of tracer chemistry, nuclear chemistry, radiation chemistry, and the development of nuclear power. ...

Herbert M. Clark

1958-01-01T23:59:59.000Z

240

Atmospheric Chemistry of Dichlorvos  

Science Journals Connector (OSTI)

Atmospheric Chemistry of Dichlorvos ... In the positive ion mode, protonated water hydrates (H3O+(H2O)n) generated by the corona discharge in the chamber diluent air were responsible for the protonation of analytes, and the ions that were mass analyzed were mainly protonated molecules ([M + H]+) and their protonated homo- and heterodimers. ... Methyl nitrite, 2-propyl nitrite and N2O5 were prepared and stored as described previously,(8, 10) and O3 in O2 diluent was generated using a Welsbach T-408 ozone generator. ...

Sara M. Aschmann; Ernesto C. Tuazon; William D. Long; Roger Atkinson

2011-03-15T23:59:59.000Z

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

Black Hole Chemistry  

E-Print Network (OSTI)

The mass of a black hole has traditionally been identified with its energy. We describe a new perspective on black hole thermodynamics, one that identifies the mass of a black hole with chemical enthalpy, and the cosmological constant as thermodynamic pressure. This leads to an understanding of black holes from the viewpoint of chemistry, in terms of concepts such as Van der Waals fluids, reentrant phase transitions, and triple points. Both charged and rotating black holes exhibit novel chemical-type phase behaviour, hitherto unseen.

David Kubiznak; Robert B. Mann

2014-04-08T23:59:59.000Z

242

Chemistry Major and Minor At A Glance  

E-Print Network (OSTI)

Chemistry Major and Minor At A Glance Major I ­ Pre-professional (Medicine, Dentistry, Business, Law, Engineering) Major II ­ ACS Certified e.g. Graduate Study or Entry Level Chemistry Employment. Major III ­ Forensic Chemistry Major IV** ­ Biochemistry Option Chemistry Minor General Chemistry I & II

Schmitt, William R.

243

College of Science Department of Chemistry  

E-Print Network (OSTI)

College of Science Department of Chemistry CHEMISTRY MINOR CHECKSHEET For students graduating in calendar year 2015 I. Required Courses (19 hours) CHEM 1035 1 -10362 General Chemistry (3) ____ (3) ____ CHEM 1045 3 -10464 General Chemistry Labs (1) ____ (1) ____ CHEM 2535-2536 Organic Chemistry (3

Crawford, T. Daniel

244

College of Science Department of Chemistry  

E-Print Network (OSTI)

College of Science Department of Chemistry CHEMISTRY MINOR CHECKSHEET For students graduating in calendar year 2013 I. Required Courses (19 hours) CHEM 1035 1 -10362 General Chemistry (3) ____ (3) ____ CHEM 1045 3 -10464 General Chemistry Labs (1) ____ (1) ____ CHEM 2535-2536 Organic Chemistry (3

Crawford, T. Daniel

245

College of Science Department of Chemistry  

E-Print Network (OSTI)

College of Science Department of Chemistry CHEMISTRY MINOR CHECKSHEET For students graduating in calendar year 2014 I. Required Courses (19 hours) CHEM 1035 1 -10362 General Chemistry (3) ____ (3) ____ CHEM 1045 3 -10464 General Chemistry Labs (1) ____ (1) ____ CHEM 2535-2536 Organic Chemistry (3

Crawford, T. Daniel

246

Chemistry and Biochemistry Graduate Student Spring 2012  

E-Print Network (OSTI)

Chemistry and Biochemistry Graduate Student Tutors Spring 2012 (All arrangements are solely between.axelrod@mail.utexas.edu Organic Chemistry Chris Bates chrismbates@gmail.com General Chemistry Lecture/Lab Organic Chemistry Amy Bonaparte abonaparte@mail.utexas.edu General and Organic Chemistry Shelly Casciato slcasciato

247

Chemistry and Biochemistry Graduate Student Summer 2012  

E-Print Network (OSTI)

Chemistry and Biochemistry Graduate Student Tutors Summer 2012 (All arrangements are solely between.axelrod@mail.utexas.edu Organic Chemistry Chris Bates chrismbates@gmail.com General Chemistry Lecture/Lab Organic Chemistry Amy Bonaparte abonaparte@mail.utexas.edu General and Organic Chemistry Shelly Casciato slcasciato

248

Chemistry UMass Lowell Commonwealth Honors Track  

E-Print Network (OSTI)

Chemistry UMass Lowell Commonwealth Honors Track Scholarship Rises. Freshman Year/ Fall Semester Cr) Honors Chemistry I 3 84.136 (H) Honors Chemistry II 3 84.123 (H) Honors Chemistry I Lab 1 84.124 (H) Honors Chemistry II Lab 1 92.131 Calculus I 4 92.132 Honors Calculus II 4 Hon 110 Honors FYSH (AH) 3 Gen

Massachusetts at Lowell, University of

249

College of Science Department of Chemistry  

E-Print Network (OSTI)

College of Science Department of Chemistry CHEMISTRY MINOR CHECKSHEET For students graduating in calendar year 2012 I. Required Courses (19 hours) CHEM 1035 1 -10362 General Chemistry (3) ____ (3) ____ CHEM 1045 3 -10464 General Chemistry Labs (1) ____ (1) ____ CHEM 2535-2536 Organic Chemistry (3

Crawford, T. Daniel

250

Assessment of Aerosol Radiative Impact over Oceanic Regions Adjacent to Indian Subcontinent using Multi-Satellite Analysis  

SciTech Connect

Using data from Ozone Monitoring Instrument (OMI) and Moderate Resolution Imaging Spectroradiometer (MODIS) instruments, we have retrieved regional distribution of aerosol column single scattering albedo (parameter indicative of the relative dominance of aerosol absorption and scattering effects), a most important, but least understood aerosol property in assessing its climate impact. Consequently we provide improved assessment of short wave aerosol radiative forcing (ARF) (on both regional and seasonal scales) estimates over this region. Large gradients in north-south ARF were observed as a consequence of gradients in single scattering albedo as well as aerosol optical depth. The highest ARF (-37 W m-2 at the surface) was observed over the northern Arabian Sea during June to August period (JJA). In general, ARF was higher over northern Bay of Bengal (NBoB) during winter and pre-monsoon period, whereas the ARF was higher over northern Arabian Sea (NAS) during the monsoon and post- monsoon period. The largest forcing observed over NAS during JJA is the consequence of large amounts of desert dust transported from the west Asian dust sources. High as well as seasonally invariant aerosol single scattering albedos (~0.98) were observed over the southern Indian Ocean region far from continents. The ARF estimates based on direct measurements made at a remote island location, Minicoy (8.3°N, 73°E) in the southern Arabian Sea are in good agreement with the estimates made following multisatellite analysis.

Satheesh, S. K.; Vinoj, V.; Krishnamoorthy, K.

2010-10-01T23:59:59.000Z

251

Southern hemisphere tropospheric aerosol microphysics  

SciTech Connect

Aerosol particle size distribution data have been obtained in the southern hemisphere from approximately 4{degree}S to 44{degree}S and between ground level and 6 km, in the vicinity of eastern Australia. The relative shape of the free-tropospheric size distribution for particles with radii larger than approximately 0.04 {mu}m was found to be remarkably stable with time, altitude, and location for the autumn-winter periods considered. This was despite some large concentration changes which were found to be typical of the southeastern Australian coastal region. The majority of free-troposphere large particles were found to have sulfuric acid or lightly ammoniated sulfate morphology. Large particles in the boundary layer almost exclusively had a sea-salt morphology.

Gras, J.L. (Commonwealth Scientific and Industrial Research Organization, Aspendale (Australia))

1991-03-20T23:59:59.000Z

252

ARM - Measurement - Aerosol particle size distribution  

NLE Websites -- All DOE Office Websites (Extended Search)

particle size distribution particle size distribution ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Aerosol particle size distribution The number of aerosol particles present in any given volume of air within a specificied size range Categories Aerosols Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments SMPS : Scanning mobility particle sizer TDMA : Tandem Differential Mobility Analyzer UHSAS : Ultra-High Sensitivity Aerosol Spectrometer Field Campaign Instruments

253

BNL | Two-Column Aerosol Program (TCAP)  

NLE Websites -- All DOE Office Websites (Extended Search)

Two-Column Aerosol Project (TCAP) Two-Column Aerosol Project (TCAP) There remain many key knowledge gaps despite advances in the scientific understanding of how aerosols and clouds evolve and affect climate. Many climatically important processes depend on particles that undergo continuous changes within a size range spanning a few nanometers to a few microns, and with compositions that consist of a variety of carbonaceous materials, soluble inorganic salts and acids and insoluble mineral dust. Primary particles, which are externally-mixed when emitted, are subject to coagulation and chemical changes associated with the condensation of semi-volatile gases to their surface resulting in a spectrum of compositions or mixing-states with a range of climate-affecting optical and hygroscopic properties. The numerical treatments of aerosol transformation

254

NASA's Aerosol-Cloud-Ecosystems (ACE) Mission  

Science Journals Connector (OSTI)

Plans for NASA’s Aerosol-Cloud-Ecosystem (ACE) mission is described. Recommended by Earth Science Decadal Survey in 2007, ACE is nominally planned for a 2021 launch. ACE is...

Starr, David O'C

255

Aerosol Best Estimate Value-Added Product  

SciTech Connect

The objective of the Aerosol Best Estimate (AEROSOLBE) value-added product (VAP) is to provide vertical profiles of aerosol extinction, single scatter albedo, asymmetry parameter, and Angstroem exponents for the atmospheric column above the Central Facility at the ARM Southern Great Plains (SGP) site. We expect that AEROSOLBE will provide nearly continuous estimates of aerosol optical properties under a range of conditions (clear, broken clouds, overcast clouds, etc.). The primary requirement of this VAP was to provide an aerosol data set as continuous as possible in both time and height for the Broadband Heating Rate Profile (BBHRP) VAP in order to provide a structure for the comprehensive assessment of our ability to model atmospheric radiative transfer for all conditions. Even though BBHRP has been completed, AEROSOLBE results are very valuable for environmental, atmospheric, and climate research.

Flynn, C; Turner, D; Koontz, A; Chand, D; Sivaraman, C

2012-07-19T23:59:59.000Z

256

ADVANCED INORGANIC LABORATORY FALL 2008 CHEMISTRY 410 (CRN 11299:), CHEMISTRY 510 (CRN 11315)  

E-Print Network (OSTI)

ADVANCED INORGANIC LABORATORY ­ FALL 2008 CHEMISTRY 410 (CRN 11299:), CHEMISTRY 510 (CRN 11315: 373C Klamath E-Mail: cpage@uoregon.edu Phone: 346-4693 Office Hours: M 11:00 am, U 11:00 am, coordination chemistry, main group chemistry, organometallic chemistry, and bioinorganic chemistry. Because

Richmond, Geraldine L.

257

BA in CHEMISTRY (692827) MAP Sheet Department of Chemistry and Biochemistry  

E-Print Network (OSTI)

BA in CHEMISTRY (692827) MAP Sheet Department of Chemistry and Biochemistry For students entering Chemistry and Biochemistry Department requires the final 10 hours of required chemistry credit to be taken for graduation. Complete the following: Chem 111* Honors Principles of Chemistry Chem 112 Principles of Chemistry

Seamons, Kent E.

258

http://chemistry.usc.edu/ Tel: (213) 7407036 UndergraduateProgramsDepartment of Chemistry  

E-Print Network (OSTI)

http://chemistry.usc.edu/ Tel: (213) 7407036 UndergraduateProgramsDepartment of Chemistry Chemistry NanoscienceChemical BiologyBiochemistryResearch Five Majors, One Vision #12;Department of Chemistry, Undergraduate Programs Information about the programs B.S. degree in Chemistry: The B.S. degree in Chemistry

Rohs, Remo

259

Chemistry -Bachelor of Science (SCHUG) Total Credits Required: 128 Chemistry -ACS Certified  

E-Print Network (OSTI)

Chemistry - Bachelor of Science (SCHUG) Total Credits Required: 128 Chemistry - ACS Certified Major of the following courses Course Credits Course Credits CH1150 University Chemistry I AND 3 CH4110 Pharmaceutical Chemistry: Drug Action 3 CH1151 University Chemistry Lab 1 AND 1 CH4120 Pharmaceutical Chemistry: Drug

260

Chemistry -Bachelor of Science (SCH1UG) Total Credits Required: 128 Chemistry/Polymers -ACS Certified  

E-Print Network (OSTI)

Chemistry - Bachelor of Science (SCH1UG) Total Credits Required: 128 Chemistry/Polymers - ACS credits Course Credits Course Credits CH1150 University Chemistry I AND 3 CH4610 Intro to Polymer Science 3 CH1151 University Chemistry Lab 1 AND 1 CH4620 Polymer Chemistry 3 CH1153 University Chemistry

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

ARM - Publications: Science Team Meeting Documents: A decade long aerosol  

NLE Websites -- All DOE Office Websites (Extended Search)

A decade long aerosol and cloud statistics and aerosol indirect effect at A decade long aerosol and cloud statistics and aerosol indirect effect at the ARM SGP site Min, Qilong State University of New York at Albany Duan, Minzheng State University of New York at Albany Harrison, Lee State University of New York Joseph, Everette Howard University Twelve-year data of MFRSR and MWR have been used to derive aerosol and cloud optical properties at the ARM SGP. Diurnal, monthly, seasonal and interannual variability of aerosol (optical depth and Angstrom coefficient) and cloud (optical depth and effective radius) have been analyzed. We specially focused on aerosol-cloud interactions. We found a signature of indirect aerosol effect for summer data: increased aerosol index has a statistically-significant anti-correlation with mean effective radius. No

262

Chemistry & Physics at Interfaces | Advanced Materials | ORNL  

NLE Websites -- All DOE Office Websites (Extended Search)

Oxide Interfaces Chemical Imaging Grain Boundaries Related Research Materials Synthesis from Atoms to Systems Materials Characterization Materials Theory and Simulation Energy Frontier Research Centers Advanced Materials Home | Science & Discovery | Advanced Materials | Research Areas | Chemistry and Physics at Interfaces SHARE Chemistry and Physics at Interfaces Chemical transformations and physical phenomena at gas, liquid and solid interfaces lie at the heart of today's energy technologies. They underpin ORNL's research strategies to deliver scientific discoveries and technical breakthroughs that will accelerate the development and deployment of solutions in clean energy. Understanding, predicting and controlling the structure, transport and reactivity at interfaces will lead to advances in

263

DETERMINATION OF RADIAL MOMENTS OF AN AEROSOL  

NLE Websites -- All DOE Office Websites (Extended Search)

DETERMINATION OF RADIAL MOMENTS OF AN AEROSOL DETERMINATION OF RADIAL MOMENTS OF AN AEROSOL SIZE DISTRIBUTION FROM MEASUREMENTS OF LIGHT TRANSMITTANCE AND SCATTERING Ernie R. Lewis and Stephen E. Schwartz Brookhaven National Laboratory, Upton, NY 11933 ses@bnl.gov elewis@bnl.gov MOMENTS FROM MEASUREMENTS As each of the measured quantities is linear in the size distribution dn/dr, it is possible to construct linear combinations of measurements that yield

264

Aerosol fabrication methods for monodisperse nanoparticles  

DOE Patents (OSTI)

Exemplary embodiments provide materials and methods for forming monodisperse particles. In one embodiment, the monodisperse particles can be formed by first spraying a nanoparticle-containing dispersion into aerosol droplets and then heating the aerosol droplets in the presence of a shell precursor to form core-shell particles. By removing either the shell layer or the nanoparticle core of the core-shell particles, monodisperse nanoparticles can be formed.

Jiang, Xingmao; Brinker, C Jeffrey

2014-10-21T23:59:59.000Z

265

Electrically Driven Technologies for Radioactive Aerosol Abatement  

SciTech Connect

The purpose of this research project was to develop an improved understanding of how electriexecy driven processes, including electrocoalescence, acoustic agglomeration, and electric filtration, may be employed to efficiently treat problems caused by the formation of aerosols during DOE waste treatment operations. The production of aerosols during treatment and retrieval operations in radioactive waste tanks and during thermal treatment operations such as calcination presents a significant problem of cost, worker exposure, potential for release, and increased waste volume.

David W. DePaoli; Ofodike A. Ezekoye; Costas Tsouris; Valmor F. de Almeida

2003-01-28T23:59:59.000Z

266

Development of plutonium aerosol fractionation system  

E-Print Network (OSTI)

DEVELOPMENT OF A PLUTONIUM AEROSOL FRACTIONATION SYSTEM A Thesis by MALLA R. MEKALA Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August... 1993 Major Subject: Mechanical Engineering DEVELOPMENT OP A PLUTONIUM AEROSOL FRACTIONATION SYSTEM A Thesis by MALLA R. MEKALA Approved as to style and content by: A. R. McFarland (Chair of Committee) N. K. Anand (Mer toer) (', & C. B...

Mekala, Malla R.

1993-01-01T23:59:59.000Z

267

Center for the history of chemistry resources  

Science Journals Connector (OSTI)

Center for the history of chemistry resources ... A note alerting those interested in the histories of chemistry, chemical engineering, and chemical process industries to the resources available from the Center for the History of Chemistry. ... Chemical Engineering ...

Bruce V. Lewenstein

1988-01-01T23:59:59.000Z

268

Coordination Chemistry in the Solid State  

Science Journals Connector (OSTI)

...February 1996 research-article Coordination Chemistry in the Solid State Peter G. Bruce Salts...form a vital bridge between coordination chemistry in solution and more classical solid-state chemistry. The solid coordination compounds are...

1996-01-01T23:59:59.000Z

269

Enzymes as Reagents in Clinical Chemistry  

Science Journals Connector (OSTI)

...research-article Enzymes as Reagents in Clinical Chemistry C. P. Price Clinical chemistry is concerned with the measurement of substances...Therefore analytical techniques in clinical chemistry must be sensitive, specific and rapid. Many...

1983-01-01T23:59:59.000Z

270

Microfluidics for High School Chemistry Students  

Science Journals Connector (OSTI)

Microfluidics for High School Chemistry Students ... We present a laboratory experiment that introduces high school chemistry students to microfluidics while teaching fundamental properties of acid–base chemistry. ... Electrolysis of Water in the Secondary School Science Laboratory with Inexpensive Microfluidics ...

Melissa Hemling; John A. Crooks; Piercen M. Oliver; Katie Brenner; Jennifer Gilbertson; George C. Lisensky; Douglas B. Weibel

2013-12-09T23:59:59.000Z

271

Binghamton University Department of Chemistry  

E-Print Network (OSTI)

Binghamton University Department of Chemistry Graduate Student Handbook 2009 -2010 #12;State Director. The GPC does the following: (a) administers the placement examinations, (b) makes recommendations, inorganic, organic and physical) and one graduate student chosen by the Graduate Chemistry Club. B

Suzuki, Masatsugu

272

Synthetic and Mechanistic Chemistry publications  

NLE Websites -- All DOE Office Websites (Extended Search)

Synthetic and Mechanistic Chemistry » Synthetic and Mechanistic Chemistry » Synthetic and Mechanistic Synthetic and Mechanistic publications Research into alternative forms of energy, especially energy security, is one of the major national security imperatives of this century. Get Expertise Dave Thorn Chemistry Program Manager Email Josh Smith Chemistry Communications Email "Research into alternative forms of energy, of which biofuels is a key component, is one of the major national security imperatives of this century. Energy security is vital to our future national security and the efficient functioning of our market economy." -LANL Director Charles McMillan Harshini Mukundan, Hongzhi Xie, Aaron S. Anderson, W. Kevin Grace, John E. Shively, and Basil I. Swanson, "Optimizing a waveguide-based sandwich immunoassay for tumor biomarkers: Evaluating fluorescent labels and functional surfaces," Bioconjugate Chemistry 20(2), 222-230 (2009).

273

Transport and Mixing Patterns over Central California during the Carbonaceous Aerosol and Radiative Effects Study (CARES)  

SciTech Connect

We describe the synoptic and regional-scale meteorological conditions that affected the transport and mixing of trace gases and aerosols in the vicinity of Sacramento, California during June 2010 when the Carbonaceous Aerosol and Radiative Effects Study (CARES) was conducted. The meteorological measurements collected by various instruments deployed during the campaign and the performance of the chemistry version of the Weather Research and Forecasting model (WRF-Chem) are both discussed. WRF-Chem was run daily during the campaign to forecast the spatial and temporal variation of carbon monoxide emitted from 20 anthropogenic source regions in California to guide aircraft sampling. The model is shown to reproduce the overall circulations and boundary-layer characteristics in the region, although errors in the upslope wind speed and boundary-layer depth contribute to differences in the observed and simulated carbon monoxide. Thermally-driven upslope flows that transported pollutants from Sacramento over the foothills of the Sierra Nevada occurred every afternoon, except during three periods when the passage of mid-tropospheric troughs disrupted the regional-scales flow patterns. The meteorological conditions after the passage of the third trough were the most favorable for photochemistry and likely formation of secondary organic aerosols. Meteorological measurements and model forecasts indicate that the Sacramento pollutant plume was likely transported over a downwind site that collected trace gas and aerosol measurements during 23 periods; however, direct transport occurred during only eight of these periods. The model also showed that emissions from the San Francisco Bay area transported by intrusions of marine air contributed a large fraction of the carbon monoxide in the vicinity of Sacramento, suggesting that this source likely affects local chemistry. Contributions from other sources of pollutants, such as those in the Sacramento Valley and San Joaquin Valley, were relatively low. Aerosol layering in the free troposphere was observed during the morning by an airborne Lidar; WRF-Chem forecasts showed that mountain venting processes contributed to aged pollutants aloft in the valley atmosphere which then can be entrained into the growing boundary layer the subsequent day.

Fast, Jerome D.; Gustafson, William I.; Berg, Larry K.; Shaw, William J.; Pekour, Mikhail S.; Shrivastava, ManishKumar B.; Barnard, James C.; Ferrare, R.; Hostetler, Chris A.; Hair, John; Erickson, Matthew H.; Jobson, Tom; Flowers, Bradley; Dubey, Manvendra K.; Springston, Stephen R.; Pirce, Bradley R.; Dolislager, Leon; Pederson, J. R.; Zaveri, Rahul A.

2012-02-17T23:59:59.000Z

274

Transport and mixing patterns over Central California during the carbonaceous aerosol and radiative effects study (CARES)  

SciTech Connect

We describe the synoptic and regional-scale meteorological conditions that affected the transport and mixing of trace gases and aerosols in the vicinity of Sacramento, California during June 2010 when the Carbonaceous Aerosol and Radiative Effects Study (CARES) was conducted. The meteorological measurements collected by various instruments deployed during the campaign and the performance of the chemistry version of the Weather Research and Forecasting model (WRF-Chem) are both discussed. WRF-Chem was run daily during the campaign to forecast the spatial and temporal variation of carbon monoxide emitted from 20 anthropogenic source regions in California to guide aircraft sampling. The model is shown to reproduce the overall circulations and boundary-layer characteristics in the region, although errors in the upslope wind speed and boundary-layer depth contribute to differences in the observed and simulated carbon monoxide. Thermally-driven upslope flows that transported pollutants from Sacramento over the foothills of the Sierra Nevada occurred every afternoon, except during three periods when the passage of mid-tropospheric troughs disrupted the regional-scale flow patterns. The meteorological conditions after the passage of the third trough were the most favorable for photochemistry and likely formation of secondary organic aerosols. Meteorological measurements and model forecasts indicate that the Sacramento pollutant plume was likely transported over a downwind site that collected trace gas and aerosol measurements during 23 time periods; however, direct transport occurred during only eight of these periods. The model also showed that emissions from the San Francisco Bay area transported by intrusions of marine air contributed a large fraction of the carbon monoxide in the vicinity of Sacramento, suggesting that this source likely affects local chemistry. Contributions from other sources of pollutants, such as those in the Sacramento Valley and San Joaquin Valley, were relatively low. Aerosol layering in the free troposphere was observed during the morning by an airborne Lidar. WRF-Chem forecasts showed that mountain venting processes contributed to aged pollutants aloft in the valley atmosphere that are then entrained into the growing boundary layer the subsequent day.

Fast J. D.; Springston S.; Gustafson Jr., W. I.; Berg, L. K.; Shaw, W. J.; Pekour, M.; Shrivastava, M.; Barnard, J. C.; Ferrare, R. A.; Hostetler, C. A.; Hair, J. A.; Erickson, M.; Jobson, B. T.; Flowers, B.; Dubey, M. K.; Pierce, R. B.; Dolislager, L.; Pederson, J.; Zaveri, R. A.

2012-02-17T23:59:59.000Z

275

E-Print Network 3.0 - aerosol microphysical characteristics Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

new particle formation, aerosol microphysical evolution, three-dimensional transport, and wet... of aerosol microphysical properties. Some of ... Source: Brookhaven...

276

E-Print Network 3.0 - aerosol chemical vapor Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

chemical and microphysical properties influence aerosol optical properties and radiative effects... distribution of aerosol extensive and intensive properties will aid ......

277

Chemistry & Physics at Interfaces | Advanced Materials | ORNL  

NLE Websites -- All DOE Office Websites (Extended Search)

Advanced Materials Home | Science & Discovery | Advanced Materials | Research Areas | Chemistry and Physics at Interfaces SHARE Chemistry and Physics at Interfaces Chemical...

278

Nanostructure, Chemistry and Crystallography of Iron Nitride...  

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

Nanostructure, Chemistry and Crystallography of Iron Nitride Magnetic Materials by Ultra-High-Resolution Electron Microscopy and Related Methods Nanostructure, Chemistry and...

279

A chemistry tale of two carbons | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

A chemistry tale of two carbons A chemistry tale of two carbons Comprehensive field study of urban, natural emissions interacting to affect climate change Data from the CARES...

280

Chemistry for Measurement and Detection Science  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry for Measurement and Detection Science Chemistry for Measurement and Detection Science Research into alternative forms of energy, especially energy security, is one of the...

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

Exhaust Phosphorous Chemistry and Catalyst Poisoning | Department...  

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

Chemistry and Catalyst Poisoning Exhaust Phosphorous Chemistry and Catalyst Poisoning 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Oak Ridge National...

282

Cetane Performance and Chemistry Comparing Conventional Fuels...  

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

Cetane Performance and Chemistry Comparing Conventional Fuels and Fuels Derived from Heavy Crude Sources Cetane Performance and Chemistry Comparing Conventional Fuels and Fuels...

283

Exhaust Phosphorous Chemistry | Department of Energy  

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

Chemistry Exhaust Phosphorous Chemistry 2003 DEER Conference Presentation: Oak Ridge National Laboratory deer2003bunting2.pdf More Documents & Publications Exhaust Phosphorous...

284

Coordination Chemistry in magnesium battery electrolytes: how...  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry in magnesium battery electrolytes: how ligands affect their performance. Coordination Chemistry in magnesium battery electrolytes: how ligands affect their performance....

285

Chemistry and Material Sciences Codes at NERSC  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry and Material Sciences Codes Chemistry and Material Sciences Codes at NERSC April 6, 2011 L ast edited: 2014-06-02 08:59:45...

286

Chemistry: Mechanism and Experiment - Combustion Energy Frontier...  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry: Mechanism and Experiment Chemistry: Mechanism and Experiment The Mechanism and Experiment DWG uses an array of advanced experimental apparatus to probe the combustion...

287

Chemistry Department Administration  

NLE Websites -- All DOE Office Websites (Extended Search)

Administration Administration A. Harris, Chair (631) 344-4301 alexh@bnl.gov G. Hall, Deputy Chair (631) 344-4376 gehall@bnl.gov S. McAlary, Deputy BES Manager (631) 344-4305 mcalary2@bnl.gov J. Petterson, Senior Administrative Assistant (631) 344-4302 jpetter@bnl.gov Administrative Support Includes budgeting, procurement activities, foreign/domestic travel, seminars and general administrative concerns. Guest Appointments and Personnel matters should be referred to the Department's Senior Administrative Assistant. L. Sallustio (631) 344-4303 lsallust@bnl.gov Building and Stockroom Maintain the Chemistry Department stockroom and provide technical and building support to the staff. Information on the BNL Chemical Management Inventory system is available through the stockroom. Click here to view

288

Silane discharge ion chemistry  

SciTech Connect

Silane dc, rf, and dc proximity discharges have been studied using mass spectroscopic measurements of the positive ions as a detailed diagnostic for the type of discharge used to produce hydrogenated amorphous silicon solar photovoltaic cells. The properties and quality of these films depends in a very complex way upon the interactions of the many reactive neutral and ion species in the discharge. Qualitative models of the ion chemical processes in these discharges have been developed from experimental measurements. Knowledge of the ion-molecule and electron-molecule collision cross sections is important to any attempt at understanding silane discharge chemistry. Consequently, the electron impact ionization cross sections for silane and disilane have been measured and for comparison purposes also for methane and ethane. In addition, the rate coefficients for charge exchange reactions of He , Ne , and Ar with silane, disilane, methane, and ethane have been measured as these are important to understanding discharges in inert gas-silane mixtures. A detailed quantitative model of the cathode sheath region of a silane dc discharge has been developed by extending the best recent calculation of the electron motion in the sheath to a self-consistent form which includes the ion motion. This model is used with comparison of silane dc discharge data to diagnose the ion chemistry occurring in the sheath region of silane dc discharge. The understanding of the discharge ion chemical processes that have been gained in this study represent an important step toward understanding the chemical and physical processes leading to film growth.

Chatham, R.H. III

1984-01-01T23:59:59.000Z

289

Model analysis of the anthropogenic aerosol effect on clouds over East Asia  

SciTech Connect

A coupled meteorology and aerosol/chemistry model WRF-Chem (Weather Research and Forecast model coupled with Chemistry) was used to conduct a pair of simulations with present-day (PD) and preindustrial (PI) emissions over East Asia to examine the aerosol indirect effect on clouds. As a result of an increase in aerosols in January, the cloud droplet number increased by 650 cm{sup -3} over the ocean and East China, 400 cm{sup -3} over Central and Southwest China, and less than 200 cm{sup -3} over North China. The cloud liquid water path (LWP) increased by 40-60 g m{sup -2} over the ocean and Southeast China and 30 g m{sup -2} over Central China; the LWP increased less than 5 g m{sup -2} or decreased by 5 g m{sup -2} over North China. The effective radius (Re) decreased by more than 4 {mu}m over Southwest, Central, and Southeast China and 2 {mu}m over North China. In July, variations in cloud properties were more uniform; the cloud droplet number increased by approximately 250-400 cm{sup -3}, the LWP increased by approximately 30-50 g m{sup -2}, and Re decreased by approximately 3 {mu}m over most regions of China. In response to cloud property changes from PI to PD, shortwave (SW) cloud radiative forcing strengthened by 30 W m{sup -2} over the ocean and 10 W m{sup -2} over Southeast China, and it weakened slightly by approximately 2-10 W m{sup -2} over Central and Southwest China in January. In July, SW cloud radiative forcing strengthened by 15 W m{sup -2} over Southeast and North China and weakened by 10 W m{sup -2} over Central China. The different responses of SW cloud radiative forcing in different regions was related to cloud feedbacks and natural variability.

Gao, Yi; Zhang, Meigen; Liu, Xiaohong; Zhao, Chun

2012-01-16T23:59:59.000Z

290

ARM Aerosol Working Group Meeting  

NLE Websites -- All DOE Office Websites (Extended Search)

and MFRSR Measurements ARM STM 2008 Norfolk, VA Connor Flynn 1 , Annette Koontz 1 , Anne Jefferson 2 , Jim Barnard 1 , Sally McFarlane 1 1 Pacific Northwest National Laboratory 2 CIRES, University of Colorado, Boulder Progress towards ARM DOE 2008 Performance Metric 3 & 4 * Produce and make available new continuous time series of aerosol total column depth, based on results from the AMF deployment in Niger, Africa. * Produce and make available new continuous time series of retrieved dust properties, based on results from the AMF deployment in Niger, Africa. 0 100 200 300 400 0 20 40 60 80 100 ITF movement and surface RH % RH day of year (2006) 0 100 200 300 400 0 50 100 150 200 250 300 350 day of year wind direction (N = 0, E = 90) 2 4 6 8 10 12 14 Wind speed m/s 0 100 200 300 1.4 1.6 1.8 2 MFRSR Vo for filter2, Niamey

291

ARM - Field Campaign - Carbonaceous Aerosol and Radiative Effects Study  

NLE Websites -- All DOE Office Websites (Extended Search)

govCampaignsCarbonaceous Aerosol and Radiative Effects Study (CARES) govCampaignsCarbonaceous Aerosol and Radiative Effects Study (CARES) Campaign Links CARES Website Related Campaigns Carbonaceous Aerosol and Radiation Effects Study (CARES) - Surface Meteorological Sounding 2010.05.26, Zaveri, OSC Carbonaceous Aerosol and Radiation Effects Study (CARES) Photo-Acoustic Aerosol Light Absorption and Scattering 2010.05.26, Arnott, OSC Carbonaceous Aerosol and Radiative Effects Study (CARES): SMPS & CCN counter deployment during CARES/Cal-NEx 2010.05.04, Wang, OSC Carbonaceous Aerosol and Radiative Effects Study (CARES) Ground Based Instruments 2010.04.01, Cziczo, OSC Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Carbonaceous Aerosol and Radiative Effects Study (CARES)

292

Distinguishing Aerosol Impacts on Climate over the Past Century  

Science Journals Connector (OSTI)

Aerosol direct (DE), indirect (IE), and black carbon–snow albedo (BAE) effects on climate between 1890 and 1995 are compared using equilibrium aerosol–climate simulations in the Goddard Institute for Space Studies General Circulation Model ...

Dorothy Koch; Surabi Menon; Anthony Del Genio; Reto Ruedy; Igor Alienov; Gavin A. Schmidt

2009-05-01T23:59:59.000Z

293

Atmospheric Aerosol Optical Properties in the Persian Gulf  

Science Journals Connector (OSTI)

Aerosol optical depth measurements over Bahrain acquired through the ground-based Aerosol Robotic Network (AERONET) are analyzed. Optical depths obtained from ground-based sun/sky radiometers showed a pronounced temporal trend, with a maximum ...

Alexander Smirnov; Brent N. Holben; Oleg Dubovik; Norm T. O'Neill; Thomas F. Eck; Douglas L. Westphal; Andreas K. Goroch; Christophe Pietras; Ilya Slutsker

2002-02-01T23:59:59.000Z

294

Photometric Variations as Small Perturbations in Aerosol Content  

NLE Websites -- All DOE Office Websites (Extended Search)

Photometric Variations as Photometric Variations as Small Perturbations in Aerosol Content I. Musat Department of Meteorology University of Maryland College Park, Maryland R. G. Ellingson Department of Meteorology Florida State University Tallahassee, Florida Abstract The quality of profile fitting of resolved stars depends ultimately upon the accuracy with which spectral differences of the sources are retrievable within the data, because the radiation color of well-separated known sources can serve as an indicator of the origin of the optical depth variations one observes during the night. The particularities of the whole sky imager (WSI) detector and optical system are such that the data suffer from lack of the spatial resolution required in a common astronomical observation.

295

Environmental Chemistry at Vapor/Water Interfaces  

E-Print Network (OSTI)

Environmental Chemistry at Vapor/Water Interfaces: Insights from Vibrational Sum Frequency Generation Spectroscopy Aaron M. Jubb, Wei Hua, and Heather C. Allen Department of Chemistry, The Ohio State/0505-0107$20.00 Keywords salts, lipids, atmospheric chemistry, ion binding, oxidation Abstract The chemistry that occurs

296

Supramolecular chemistry and crystal engineering ASHWINI NANGIA  

E-Print Network (OSTI)

Supramolecular chemistry and crystal engineering ASHWINI NANGIA School of Chemistry, University. This article traces the evolution of supramolecular chemistry and crystal engineering starting from the early of Hyderabad, Hyderabad 500 046, India. e-mail: ashwini.nangia@gmail.com Advances in supramolecular chemistry

Joshi, Yogesh Moreshwar

297

Thermodynamics and Chemistry (DeVoe, Howard)  

Science Journals Connector (OSTI)

Thermodynamics and Chemistry (DeVoe, Howard) ... Covers all important topics in chemical thermodynamics. ... Thermodynamics ...

Eric A. Gislason

2001-09-01T23:59:59.000Z

298

Environmental Chemistry 2.1 INTRODUCTION  

E-Print Network (OSTI)

I CHAPTER 2 Environmental Chemistry 2.1 INTRODUCTION 2.2 STOICHIOMETRY 2.3 ENTHALPY IN CHEMICAL SYSTEMS 2.4 CHEMICAL EQUILIBRIA 2.S ORGANIC CHEMISTRY 2.6 NUCLEAR CHEMISTRY PROBLEMS REFERENCES It often #12;40 Chapter 2 Environmental Chemistry TABLE 2.1 Atomic Numbers andAtomic Weights Atomic Atomic

Kammen, Daniel M.

299

Emission-Induced Nonlinearities in the Global Aerosol System: Results from the ECHAM5-HAM Aerosol-Climate Model  

Science Journals Connector (OSTI)

In a series of simulations with the global ECHAM5-HAM aerosol-climate model, the response to changes in anthropogenic emissions is analyzed. Traditionally, additivity is assumed in the assessment of the aerosol climate impact, as the underlying ...

Philip Stier; Johann Feichter; Silvia Kloster; Elisabetta Vignati; Julian Wilson

2006-08-01T23:59:59.000Z

300

Toward a Minimal Representation of Aerosols in Climate Models: Comparative Decomposition of Aerosol Direct, Semidirect, and Indirect Radiative Forcing  

Science Journals Connector (OSTI)

The authors have decomposed the anthropogenic aerosol radiative forcing into direct contributions from each aerosol species to the planetary energy balance through absorption and scattering of solar radiation, indirect effects of anthropogenic ...

S. J. Ghan; X. Liu; R. C. Easter; R. Zaveri; P. J. Rasch; J.-H. Yoon; B. Eaton

2012-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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 Nuclear Chemistry Summer School  

Energy.gov (U.S. Department of Energy (DOE))

The Division of Nuclear Chemistry and Technology of the American Chemical Society (ACS) is sponsoring two INTENSIVE six-week Summer Schools in Nuclear and Radiochemistry for undergraduates. Funding is provided by the US Department of Energy.

302

Handbook of Physics and Chemistry  

Science Journals Connector (OSTI)

... many authoritative sources the requisite information necessary for students preparing for the First Examination in physics and chemistry of the Conjoint Board of the Royal Colleges of Physicians and Surgeons. ...

1899-01-04T23:59:59.000Z

303

Chemistry, Life, and Earth Sciences  

NLE Websites -- All DOE Office Websites (Extended Search)

Nan Sauer named Associate Director for Chemistry, Life, and Earth Sciences August 9, 2011 - 2 - LOS ALAMOS, New Mexico, August 9, 2011- Nancy ("Nan") Sauer is the new associate...

304

Advanced Chemistry Basins Model  

SciTech Connect

The objective of this project is to: (1) Develop a database of additional and better maturity indicators for paleo-heat flow calibration; (2) Develop maturation models capable of predicting the chemical composition of hydrocarbons produced by a specific kerogen as a function of maturity, heating rate, etc.; assemble a compositional kinetic database of representative kerogens; (3) Develop a 4 phase equation of state-flash model that can define the physical properties (viscosity, density, etc.) of the products of kerogen maturation, and phase transitions that occur along secondary migration pathways; (4) Build a conventional basin model and incorporate new maturity indicators and data bases in a user-friendly way; (5) Develop an algorithm which combines the volume change and viscosities of the compositional maturation model to predict the chemistry of the hydrocarbons that will be expelled from the kerogen to the secondary migration pathways; (6) Develop an algorithm that predicts the flow of hydrocarbons along secondary migration pathways, accounts for mixing of miscible hydrocarbon components along the pathway, and calculates the phase fractionation that will occur as the hydrocarbons move upward down the geothermal and fluid pressure gradients in the basin; and (7) Integrate the above components into a functional model implemented on a PC or low cost workstation.

Blanco, Mario; Cathles, Lawrence; Manhardt, Paul; Meulbroek, Peter; Tang, Yongchun

2003-02-13T23:59:59.000Z

305

Organic and Inorganic Aerosol Below-Cloud Scavenging by  

E-Print Network (OSTI)

concentrations, with an average gravimetric PM1.0 of 8.2 ( 1.6 µg m-3 and an average Fourier transform infrared-rinsing behavior was unaffected by source type. The aerosol OM was hydrophilic throughout the sampling period the description of aerosol lifetimes in global models. Introduction Wet and dry deposition of aerosol particles

Russell, Lynn

306

Project of Aerosol Optical Depth Change in South America  

E-Print Network (OSTI)

AerosolDepth Brazil Bolivia French Guiana Suriname Guyana Venezuela Colombia Ecuador Peru Chile Argentina Suriname Guyana Venezuela Colombia Ecuador Peru Chile Argentina Paraguay Uruguay #12;Statistics of Aerosol M ean D ec 01 to 06 Mean Month AerosolDepth Brazil Bolivia French Guiana Suriname Guyana Venezuela

Frank, Thomas D.

307

DO AEROSOLS CHANGE CLOUD COVER AND AFFECT CLIMATE?  

E-Print Network (OSTI)

AS SEEN FROM SPACE Fire plumes from southern Mexico transported north into Gulf of Mexico. #12;CLOUD IPCC AR4 (2007) 3210-1-2 Forcing, W m-2 CO2 CH4 CFCs N2O Long Lived Greenhouse Gases Tropospheric;AEROSOL INFLUENCES ON CLIMATE AND CLIMATE CHANGE #12;DMS #12;AEROSOL IN MEXICO CITY BASIN #12;AEROSOL

Schwartz, Stephen E.

308

Chemistry of Personalized Solar Energy  

Science Journals Connector (OSTI)

Chemistry of Personalized Solar Energy ... Daniel G. Nocera is the Henry Dreyfus Professor of Energy and Professor of Chemistry, Director of the Solar Revolutions Project, and Director of the Eni Solar Frontiers Center at MIT. ... By providing solar energy to the individual, an energy supply becomes secure and available to people of both legacy and nonlegacy worlds and minimally contributes to an increase in the anthropogenic level of carbon dioxide. ...

Daniel G. Nocera

2009-09-23T23:59:59.000Z

309

Virginia Tech Department of Chemistry Faculty Position in Theoretical/Computational Chemistry  

E-Print Network (OSTI)

Virginia Tech Department of Chemistry Faculty Position in Theoretical/Computational Chemistry The Department of Chemistry announces a tenure-track opening in the area of Theoretical/Computational Chemistry have a Ph.D. in chemistry or a related field by time of appointment and 1 year of postdoctoral

Beex, A. A. "Louis"

310

Air Pollution Physics and Chemistry EAS 6790 Home Work Assignment Ozone Chemistry 2  

E-Print Network (OSTI)

1 Air Pollution Physics and Chemistry EAS 6790 Fall 2010 Home Work Assignment Ozone Chemistry 2 and Chemistry EAS 6790 Fall 2006 Home Work Assignment No. 4, Ozone Chemistry Problems 11.8 and 11.9 (sub-part 1 and 2 only). Daniel Jacob, Atmospheric Chemistry #12;2 Problem 2: 2 2. Consider an air parcel ventilated

Weber, Rodney

311

Courses: Chemistry (CHEM) Page 271Sonoma State University 2011-2012 Catalog Chemistry (CHEM)  

E-Print Network (OSTI)

Courses: Chemistry (CHEM) Page 271Sonoma State University 2011-2012 Catalog Chemistry (CHEM) CheM 102 CheMiStry And SOCiety (3) Lecture, 2 hours; laboratory, 3 hours. An introductory course in chemistry for non- majors. Covers the basics of chemistry in an effort to better understand current

Ravikumar, B.

312

Chemistry -Bachelor of Science (SCH2UG) Total Credits Required: 128 Chemistry/Biochemistry -ACS Certified  

E-Print Network (OSTI)

Chemistry - Bachelor of Science (SCH2UG) Total Credits Required: 128 Chemistry/Biochemistry - ACS credits Course Credits Course Credits CH1150 University Chemistry I AND 3 BL1040 Principles of Biology 4 CH1151 University Chemistry Lab 1 AND 1 BL4820 Biochem Techniques I 2 CH1153 University Chemistry

313

Chemistry 685 (CHE 685) Advanced Organic Chemistry: Organic Reaction Mechanisms and Molecular Interactions  

E-Print Network (OSTI)

Chemistry 685 (CHE 685) Advanced Organic Chemistry: Organic Reaction Mechanisms and Molecular and physical chemistry Course description and rationale CHE685 is a graduate-level organic chemistry course. These two courses focus on physical organic chemistry, which deals with the structure and reactivity

Mather, Patrick T.

314

CHEMISTRY 2011 Academic regulations for the Bachelor's degree in Chemistry 2011  

E-Print Network (OSTI)

CHEMISTRY 2011 Academic regulations for the Bachelor's degree in Chemistry 2011 1. Framework) in Chemistry. Academic line and main subject areas of the degree The Bachelor's degree in Chemistry students a basic introduction to the Chemistry disciplines. In addition, the Bachelor's degree programme

315

Indirect and Semi-Direct Aerosol Campaign  

NLE Websites -- All DOE Office Websites (Extended Search)

Campaign Campaign For the month of April, researchers are descending on and above Barrow, Alaska, to obtain data from the atmosphere that will help them understand the impacts that aerosols have on Arctic clouds and climate. Scientists sponsored by the U.S. Department of Energy's Atmospheric Radiation Measurement (ARM) Climate Research Facility are using a heavily instrumented aircraft to collect data from the sky, while instruments based at surface sites in Barrow and Atqasuk, Alaska, are obtaining measurements from the ground. Information obtained during the Indirect and Semi-Direct Aerosol Campaign, or ISDAC, will help scientists analyze the role of aerosols in climate, and represents a key contribution to Arctic climate research during International Polar Year.

316

Researchers Model Impact of Aerosols Over California  

NLE Websites -- All DOE Office Websites (Extended Search)

Researchers Model Researchers Model Impact of Aerosols Over California Researchers Model Impact of Aerosols Over California Research may clarify the effectiveness of regional pollution controls May 28, 2013 | Tags: Climate Research, Hopper Contact: Linda Vu, lvu@lbl.gov, (510) 495-2404 LosAngelesSmogv1.jpg Smog over downtown Los Angeles. Aerosols are microscopic particles-like dust, pollen and soot-that ubiquitously float around in our atmosphere. Despite their tiny stature, these particles can have a huge impact on human health, climate and the environment. So scientists from the Pacific Northwest National Laboratory (PNNL), Colorado State University and the California Air Resources Board have set out to characterize the roles of various particles as atmospheric change agents on a regional scale.

317

Aerodynamic Focusing Of High-Density Aerosols  

SciTech Connect

High-density micron-sized particle aerosols might form the basis for a number of applications in which a material target with a particular shape might be quickly ionized to form a cylindrical or sheet shaped plasma. A simple experimental device was built in order to study the properties of high-density aerosol focusing for 1#22; m silica spheres. Preliminary results recover previous findings on aerodynamic focusing at low densities. At higher densities, it is demonstrated that the focusing properties change in a way which is consistent with a density dependent Stokes number.

Ruiz, D. E.; Fisch, Nathaniel

2014-02-24T23:59:59.000Z

318

Near real time vapor detection and enhancement using aerosol adsorption  

SciTech Connect

A vapor sample detection method where the vapor sample contains vapor and ambient air and surrounding natural background particles. The vapor sample detection method includes the steps of generating a supply of aerosol that have a particular effective median particle size, mixing the aerosol with the vapor sample forming aerosol and adsorbed vapor suspended in an air stream, impacting the suspended aerosol and adsorbed vapor upon a reflecting element, alternatively directing infrared light to the impacted aerosol and adsorbed vapor, detecting and analyzing the alternatively directed infrared light in essentially real time using a spectrometer and a microcomputer and identifying the vapor sample.

Novick, Vincent J.; Johnson, Stanley A.

1997-12-01T23:59:59.000Z

319

Technical Note: Estimating Aerosol Effects on Cloud Radiative Forcing  

SciTech Connect

Estimating anthropogenic aerosol effects on the planetary energy balance through the aerosol influence on clouds using the difference in cloud radiative forcing from simulations with and without anthropogenic emissions produces estimates that are positively biased. A more representative method is suggested using the difference in cloud radiative forcing calculated with aerosol radiative effects neglected. The method also yields an aerosol radiative forcing decomposition that includes a term quantifying the impact of changes in surface albedo. The method requires only two additional diagnostic calculations: the whole-sky and clear-sky top-of-atmosphere radiative flux with aerosol radiative effects neglected.

Ghan, Steven J.

2013-10-09T23:59:59.000Z

320

Near real time vapor detection and enhancement using aerosol adsorption  

DOE Patents (OSTI)

A vapor sample detection method is described where the vapor sample contains vapor and ambient air and surrounding natural background particles. The vapor sample detection method includes the steps of generating a supply of aerosol that have a particular effective median particle size, mixing the aerosol with the vapor sample forming aerosol and adsorbed vapor suspended in an air stream, impacting the suspended aerosol and adsorbed vapor upon a reflecting element, alternatively directing infrared light to the impacted aerosol and adsorbed vapor, detecting and analyzing the alternatively directed infrared light in essentially real time using a spectrometer and a microcomputer and identifying the vapor sample. 13 figs.

Novick, V.J.; Johnson, S.A.

1999-08-03T23:59:59.000Z

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

Near real time vapor detection and enhancement using aerosol adsorption  

DOE Patents (OSTI)

A vapor sample detection method where the vapor sample contains vapor and ambient air and surrounding natural background particles. The vapor sample detection method includes the steps of generating a supply of aerosol that have a particular effective median particle size, mixing the aerosol with the vapor sample forming aerosol and adsorbed vapor suspended in an air stream, impacting the suspended aerosol and adsorbed vapor upon a reflecting element, alternatively directing infrared light to the impacted aerosol and adsorbed vapor, detecting and analyzing the alternatively directed infrared light in essentially real time using a spectrometer and a microcomputer and identifying the vapor sample.

Novick, Vincent J. (Downers Grove, IL); Johnson, Stanley A. (Countryside, IL)

1999-01-01T23:59:59.000Z

322

Aerosol Science and Technology, 41:202216, 2007 Copyright c American Association for Aerosol Research  

E-Print Network (OSTI)

processes, such as con- densation, coagulation, gas-to-particle conversion (Reid et al. 1998), and particle Aerosol size distribution is, along with particle refractive in- dex and shape, one of important

323

NEAR-FIELD IMAGING OF OBSTACLES Peijun Li and Yuliang Wang  

E-Print Network (OSTI)

applications in modern science and technology, such as nanotechnology, biology, information storage, and surface chemistry. Using near-field imaging, we

2014-06-30T23:59:59.000Z

324

A balloon-borne aerosol spectrometer for high altitude low aerosol concentration measurements  

SciTech Connect

Funded by Air Force Wright Aeronautical Laboratory, a new balloon-borne high altitude aerosol spectrometer, for the measurement of cirrus cloud ice crystals, has been developed and successfully flown by Sandia National Laboratories and Radiance Research. This report (1) details the aerosol spectrometer design and construction, (2) discusses data transmission and decoding, (3) presents data collected on three Florida flights in tables and plots. 2 refs., 11 figs., 3 tabs.

Brown, G.S. (Sandia National Labs., Albuquerque, NM (USA)); Weiss, R.E. (Radiance Research, Seattle, WA (USA))

1990-08-01T23:59:59.000Z

325

Understanding Brown Carbon Aerosols and Their Role in Climate Change  

NLE Websites -- All DOE Office Websites (Extended Search)

Brown Carbon Aerosols Brown Carbon Aerosols Tiny aerosol particles in the atmosphere are a possible cause of climate change. Among the many contributors to climate change are aerosols in the atmosphere. These tiny particles suspended in the air come from many sources, some natural and some man-made. Some aerosols are organic (containing carbon), while others are inorganic (such as sea salt and sulfates). Most aerosols reflect sunlight, and some also absorb it. Many of these nanoparticles have severe health effects in addition to climate effects. Human activities that produce aerosols include transportation, industry, and agriculture. Black carbon particles (a component of soot) originating from combustion processes have been known for some time to absorb sunlight and warm the

326

Response of California temperature to regional anthropogenic aerosol  

NLE Websites -- All DOE Office Websites (Extended Search)

Response of California temperature to regional anthropogenic aerosol Response of California temperature to regional anthropogenic aerosol changes Title Response of California temperature to regional anthropogenic aerosol changes Publication Type Journal Article Year of Publication 2008 Authors Novakov, Tihomir, Thomas W. Kirchstetter, Surabi Menon, and Jeffery Aguiar Journal Geophysical Research Letters Volume 35 Issue 19 Abstract In this paper, we compare constructed records of concentrations of black carbon (BC) - an indicator of anthropogenic aerosols - with observed surface temperature trends in California. Annual average BC concentrations in major air basins in California significantly decreased after about 1990, coincident with an observed statewide surface temperature increase. Seasonal aerosol concentration trends are consistent with observed seasonal temperature trends. These data suggest that the reduction in anthropogenic aerosol concentrations contributed to the observed surface temperature increase. Conversely, high aerosol concentrations may lower surface temperature and partially offset the temperature increase of greenhouse gases.

327

Experimenting with the Sweet Side of Chemistry: Connecting Students and Science through Food Chemistry  

Science Journals Connector (OSTI)

Experimenting with the Sweet Side of Chemistry: Connecting Students and Science through Food Chemistry ... Food science is the greenest of all sciences. ...

Sally B. Mitchell

2014-10-14T23:59:59.000Z

328

Source Apportionment of Carbonaceous Aerosols using  

E-Print Network (OSTI)

are different than the collection of particles from water Filtration has high efficiency for all sizes Size Condensation Nuclei (CCN) Human health Carbonaceous aerosol implicated as important for toxicity and adverse of particulate matter Again, agreement between these two approaches would give a high level of confidence

Einat, Aharonov

329

Photophoretic levitation of engineered aerosols for geoengineering  

Science Journals Connector (OSTI)

...W. Keith Energy and Environmental...space-based solar scattering...The salient advantage of sulfate aerosols...instrument. Disadvantages of sulfates...concentrating solar power systems...higher energy than molecules...solving the energy balance equation...ratio of solar-spectrum to thermal-spectrum...two of the disadvantages of stratospheric...

David W. Keith

2010-01-01T23:59:59.000Z

330

Modeling Semivolatile Organic Aerosol Mass Emissions from  

E-Print Network (OSTI)

in diluted diesel and wood combustion exhaust are interpreted using a two-component absorptive with dilution of both wood smoke and diesel exhaust can be described by two lumped compounds in roughly equal. Introduction Sources of organic aerosol such as diesel engines and wood stoves emit semivolatile organic

Stanier, Charlie

331

ADEPT. aerosol deposition in cylindrical pipes  

SciTech Connect

ADEPT calculates the deposition of aerosols in straight cylindrical pipes during turbulent air flow. Aerosol deposition is calculated in a time-dependent manner based on empirical correlations for turbulent flow in pipes. The calculated deposition during a single time interval is cumulative with that of previous time intervals and results in a decreasing inner diameter of the pipe. The calculated deposition is assumed uniform over the length of the pipe. The entering aerosol distribution is specified by the user in the form of a log-normal distribution of accumulated mass versus particle size and may be time dependent. Entering flow conditions are also specified by the user and may also be time dependent. For simplicity and generality, the geometry implicit in the program is that of a cylindrical pipe with no bends or fittings. The flow is turbulent and monodirectional; only one set of inlet conditions may be applied at a given time. The flow parameters are not calculated along the length of pipe; therefore, the dynamic behavior of the aerosol within the pipe as well as the effects of reentrainment cannot be determined explicitly. A typical problem requires 2 minutes of CPU time.

Fazekas, P.; Tewarson, S.C (Burns and Roe, Oradell, NJ (United States))

1985-01-01T23:59:59.000Z

332

ADEPT. Aerosol Deposition in Cylindrical Pipes  

SciTech Connect

ADEPT calculates the deposition of aerosols in straight cylindrical pipes during turbulent air flow. Aerosol deposition is calculated in a time-dependent manner based on empirical correlations for turbulent flow in pipes. The calculated deposition during a single time interval is cumulative with that of previous time intervals and results in a decreasing inner diameter of the pipe. The calculated deposition is assumed uniform over the length of the pipe. The entering aerosol distribution is specified by the user in the form of a log-normal distribution of accumulated mass versus particle size and may be time dependent. Entering flow conditions are also specified by the user and may also be time dependent. For simplicity and generality, the geometry implicit in the program is that of a cylindrical pipe with no bends or fittings. The flow is turbulent and monodirectional; only one set of inlet conditions may be applied at a given time. The flow parameters are not calculated along the length of pipe; therefore, the dynamic behavior of the aerosol within the pipe as well as the effects of reentrainment cannot be determined explicitly. A typical problem requires 2 minutes of CPU time.

Fazekas, P.; Tewarson, S.C [Burns and Roe, Oradell, NJ (United States)

1985-01-01T23:59:59.000Z

333

3, 59195976, 2003 The nitrate aerosol  

E-Print Network (OSTI)

ACPD 3, 5919­5976, 2003 The nitrate aerosol field over Europe M. Schaap et al. Title Page Abstract of Utrecht, Institute of Marine and Atmospheric Science, PO Box 80005, 3508 TA, Utrecht, The Netherlands 2, The Netherlands 3 Netherlands Energy Research Foundation (ECN), PO Box 1, 1755 LE Petten, The Netherlands 4 Joint

Paris-Sud XI, Université de

334

Chemistry of Secondary Organic Aerosol Formation From the Reaction of Hydroxyl Radicals With Aromatic Compounds  

E-Print Network (OSTI)

R.M. , Seinfeld J.H. , Wallington T.J. , Yarwood G. , 2002.R.M. , Seinfeld J.H. , Wallington T.J. , Yarwood G. , 2002.R.M. , Seinfeld J.H. , Wallington T.J. , Yarwood G. , 2002.

Strollo Gordon, Christen Michelle

2013-01-01T23:59:59.000Z

335

Chemistry of atmospheric aerosol particles and their resulting warm cloud-nucleation properties  

E-Print Network (OSTI)

Fossil fuel combustion versus biomass-burning signatures,from smoldering biomass combustion, Atmospheric Chemistryfrom the Combustion of Biomass Fuels, Environmental Science

Moore, Meagan Julia Kerry

2011-01-01T23:59:59.000Z

336

1997 Atmospheric Chemistry Colloquium for Emerging Senior Scientists  

SciTech Connect

DOE's Atmospheric Chemistry Program is providing partial funding for the Atmospheric Chemistry Colloquium for Emerging Senior Scientists (ACCESS) and FY 1997 Gordon Research Conference in Atmospheric Chemistry

Paul H. Wine

1998-11-23T23:59:59.000Z

337

Role of inorganic chemistry on nuclear energy examined  

NLE Websites -- All DOE Office Websites (Extended Search)

July Role of inorganic chemistry on nuclear energy examined Role of inorganic chemistry on nuclear energy examined Inorganic chemistry can provide insight and improve technical...

338

Chemistry & Biology Directed Evolution of the Nonribosomal Peptide  

E-Print Network (OSTI)

Chemistry & Biology Article Directed Evolution of the Nonribosomal Peptide Synthetase Adm University of Illinois, Urbana, IL 61801, USA 3Department of Chemistry 4The Chemistry of Life Processes

Zhao, Huimin

339

Direct and semidirect aerosol effects of Southern African biomass burning aerosol  

SciTech Connect

The direct and semi-direct radiative effects of biomass burning aerosols from Southern African fires during July-October are investigated using 20 year runs of the Community Atmospheric Model (CAM) coupled to a slab ocean model. The aerosol optical depth is constrained using observations in clear skies from MODIS and for aerosol layers above clouds from CALIPSO. Over the ocean, where the absorbing biomass burning aerosol layers are primarily located above cloud, negative top of atmosphere (TOA) semi-direct radiative effects associated with increased low cloud cover dominate over a weaker positive all-sky direct radiative effect (DRE). In contrast, over the land where the aerosols are often below or within cloud layers, reductions in cloud liquid water path (LWP) lead to a positive semi-direct radiative effect that dominates over a near-zero DRE. Over the ocean, the cloud response can be understood as a response to increased lower tropospheric stability (LTS) which is caused both by aerosol absorptive warming in overlying layers and surface cooling in response to direct aerosol forcing. The ocean cloud changes are robust to changes in the cloud parameterization (removal of the hard-wired dependence of clouds on LTS), suggesting that they are physically realistic. Over land where cloud cover changes are minimal, decreased LWP is consistent with weaker convection driven by increased static stability. Over the entire region the overall TOA radiative effect from the biomass burning aerosols is almost zero due to opposing effects over the land and ocean. However, the surface forcing is strongly negative requiring a reduction in precipitation. This is primarily realized through reductions in convective precipitation on both the southern and northern flanks of the convective precipitation region spanning the equatorial rainforest and the ITCZ in the southern Sahel. The changes are consistent with the low-level aerosol forced cooling pattern. The results highlight the importance of semi-direct radiative effects and precipitation responses for determining the climatic effects of aerosols in the African region.

Sakaeda, Naoko; Wood, Robert; Rasch, Philip J.

2011-06-21T23:59:59.000Z

340

UNDERSTANDING THE INFLUENCES OF ATMOSPHERIC AEROSOLS ON CLIMATE AND CLIMATE CHANGE  

E-Print Network (OSTI)

.ecd.bnl.gov/steve BOB BRAWDY / AP #12;OVERVIEW Aerosol influences on climate and climate change Earth's energy balance remarks #12;DMS #12;AEROSOL IN MEXICO CITY BASIN #12;AEROSOL IN MEXICO CITY BASIN Light scattering by aerosols decreases absorption of solar radiation. #12;AEROSOLS AS SEEN FROM SPACE Fire plumes from southern

Schwartz, Stephen E.

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

Archaeopteryx Feathers and Bone Chemistry Fully Revealed via Synchrotron  

NLE Websites -- All DOE Office Websites (Extended Search)

Archaeopteryx Feathers and Bone Chemistry Fully Revealed via Archaeopteryx Feathers and Bone Chemistry Fully Revealed via Synchrotron Imaging Archaeopteryx specimens are important but extremely rare fossils. Due to their possession of both reptilian (jaws with teeth, long bony tail) and avian (feathered wings) characters, Archaeopteryx has been crucial in the development of Darwinian evolution. Despite their importance, no Archaeopteryx specimen has ever been chemically analyzed. This in large part may be explained by the analytical obstacles which preclude applying standard methods to such valuable specimens; destructive sampling is not an option and most non-destructive methods cannot handle large specimens. Furthermore, mapping using conventional methods is far too slow to enable chemical zonation to be reasonably determined. Mapping of trace element chemistry is of tremendous interest, however, because it opens a window into understanding several critical questions about Archaeopteryx in particular, and about fossil specimens in general. Preserved trace chemistry in bones and soft tissue may be remnants of the living organism, and therefore may give insight into life processes of extinct organisms. When mapping includes the embedding rock matrix, mass transfer between the fossil and the matrix can be constrained, hence giving information about mode of preservation. Chemical analysis can also resolve artefacts of the curation process. Finally, accurate chemical maps can also be useful for directing future work by highlighting regions that may be promising for other types of analysis including structural methods (CT, diffraction) or techniques that use other parts of the electromagnetic spectrum (infra-red).

342

Lifetimes and time scales in atmospheric chemistry  

Science Journals Connector (OSTI)

...such as for years with extensive forest fires. Moving beyond atmospheric chemistry, extension of this approach to Earth system models could yield surprises. The coupling across different components of the chemistry-climate system, such as atmospheric...

2007-01-01T23:59:59.000Z

343

University of Connecticut Department of Chemistry  

E-Print Network (OSTI)

University of Connecticut Department of Chemistry NSF Research Experience for Undergraduates (REUREU@uconn.edu Fax: (860) 486-2981 Mail: REU Site Coordinator Department of Chemistry, University of Connecticut

Michel, Robert G.

344

Thermal chemistry and photochemistry of hexafluoroacetone on...  

NLE Websites -- All DOE Office Websites (Extended Search)

chemistry and photochemistry of hexafluoroacetone on rutile TiO2(110) . Thermal chemistry and photochemistry of hexafluoroacetone on rutile TiO2(110) . Abstract: The ultraviolet...

345

Capturing Chemistry in XML/CML  

E-Print Network (OSTI)

Chemical Markup Language (CML) is an XML-conformant Schema that describes molecules, spectra, reactions, and computational chemistry. It is capable of capturing the chemistry in a variety of current publications and is becoming adopted by many...

Townsend, Joseph A; Adams, Sam; Goodman, Jonathan M; Murray-Rust, Peter; Waudby, Chris A

346

Chemistry of Cobalt-Platinum Nanocatalysts  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry of Cobalt-Platinum Nanocatalysts Chemistry of Cobalt-Platinum Nanocatalysts Print Monday, 25 February 2013 15:59 Bimetallic cobalt-platinum (CoPt) nanoparticles are...

347

Digital Control Computers In Analytical Chemistry  

Science Journals Connector (OSTI)

Digital Control Computers In Analytical Chemistry ... Time-Sharing Minicomputer Data Acquisition-Processing System ... Automation of organic elemental analysis ...

Jack W. Frazer

1968-07-01T23:59:59.000Z

348

Chemistry / Biochemistry B.S. Curriculum  

E-Print Network (OSTI)

Chemistry / Biochemistry B.S. Curriculum Freshman Chemistry CHE 133/133L, 134/134L; ENG 131, 132, BIO elective Sophomore Chemistry CHE 231/231L, 241/241L, 331/331L, 332/332L; MTH 233, 234; PHY 241 elective Junior Chemistry CHE 337/337L, 338/338L, 452/452L; CSC 101 or 201, ENG 273, Eng. Lit; Core

Long, Nicholas

349

Cryogenic Ion Chemistry and Spectroscopy  

Science Journals Connector (OSTI)

Cryogenic Ion Chemistry and Spectroscopy ... His research focuses on developing and applying cryogenic ion processing for the characterization of hydrogen bonding motifs in macromolecules and activated organometallic catalysts. ... In this Account, we discuss how cryogenic cooling, mass selection, and reactive processing together provide a powerful way to characterize ion structures as well as rationally synthesize labile reaction intermediates. ...

Arron B. Wolk; Christopher M. Leavitt; Etienne Garand; Mark A. Johnson

2013-08-23T23:59:59.000Z

350

CHEMISTRY AND THE SOLID EARTH  

Science Journals Connector (OSTI)

CHEMISTRY AND THE SOLID EARTH ... By now, he has almost completely filled the blackboard, as he keeps up a steady drumfire of excited talk of the latest findings in geochemistry and geophysics—touching on everything from the origin of the solar system to the chemical nature of the earth's core to the enigmatic structure of the Mohorovi?i? discontinuity. ...

HOWARD J. SANDERS

1967-10-02T23:59:59.000Z

351

Impact of natural and anthropogenic aerosols on stratocumulus and precipitation in the Southeast Pacific: A regional modeling study using WRF-Chem  

SciTech Connect

Cloud-system resolving simulations with the chemistry version of the Weather Research and Forecasting (WRF-Chem) model are used to quantify the impacts of regional anthropogenic and oceanic emissions on changes in aerosol properties, cloud macro- and microphysics, and cloud radiative forcing over the Southeast Pacific (SEP) during the VAMOS Ocean-Cloud-Atmosphere-Land Study Regional Experiment (VOCALS-REx) (15 Oct–Nov 16, 2008). The effects of oceanic aerosols on cloud properties, precipitation, and the shortwave forcing counteract those of anthropogenic aerosols. Despite the relatively small changes in Na concentrations (2-12%) from regional oceanic emissions, their net effect (direct and indirect) on the surface shortwave forcing is opposite and comparable or even larger in magnitude compared to those of regional anthropogenic emissions over the SEP. Two distinct regions are identified in the VOCALS-REx domain. The near-coast polluted region is characterized with strong droplet activation suppression of small particles by sea-salt particles, the more important role of the first than the second indirect effect, low surface precipitation rate, and low aerosol-cloud interaction strength associated with anthropogenic emissions. The relatively clean remote region is characterized with large contributions of Cloud Condensation Nuclei (CCN, number concentration denoted by NCCN) and droplet number concentrations (Nd) from non-local sources (lateral boundaries), a significant amount of surface precipitation, and high aerosol-cloud interactions under a scenario of five-fold increase in anthropogenic emissions. In the clean region, cloud properties have high sensitivity (e.g., 13% increase in cloud-top height and a 9% surface albedo increase) to the moderate increase in CCN concentration (?Nccn = 13 cm-3; 25%) produced by a five-fold increase in regional anthropogenic emissions. The increased anthropogenic aerosols reduce the precipitation amount over the relatively clean remote ocean. The reduction of precipitation (as a cloud water sink) more than doubles the wet scavenging timescale, resulting in an increased aerosol lifetime in the marine boundary layer. Therefore, the aerosol impacts on precipitation are amplified by the positive feedback of precipitation on aerosol. The positive feedback ultimately alters the cloud micro- and macro-properties, leading to strong aerosol-cloud-precipitation interactions. The higher sensitivity of clouds to anthropogenic aerosols over this region is also related to a 16% entrainment rate increase due to anthropogenic aerosols. The simulated aerosol-cloud-precipitation interactions are stronger at night over the clean marine region, while during the day, solar heating results in more frequent decoupling, thinner clouds, reduced precipitation, and reduced sensitivity to anthropogenic emissions. The simulated high sensitivity to the increased anthropogenic emissions over the clean region suggests that the perturbation of the clean marine environment with anthropogenic aerosols may have a larger effect on climate than that of already polluted marine environments.

Yang, Qing; Gustafson, William I.; Fast, Jerome D.; Wang, Hailong; Easter, Richard C.; Wang, Minghuai; Ghan, Steven J.; Berg, Larry K.; Leung, Lai-Yung R.; Morrison, H.

2012-09-28T23:59:59.000Z

352

Chemistry 109 (3 credit hours) Honors General Chemistry Lecture, Part I; Fall 2014  

E-Print Network (OSTI)

of the book are available at the University Bookstore. Corequisite: CHE 129 ­ Honors General Chemistry introduce you to all areas of chemistry: physical, organic, inorganic, quantum, biophysical, and analyticalChemistry 109 (3 credit hours) Honors General Chemistry Lecture, Part I; Fall 2014 Instructor

Doyle, Robert

353

Onderwerpscodes Chemie -Farmacie / Subject headings Chemistry -Pharmacy, 2009, April1 Rubrieken Chemie -Farmacie: Subject headings Chemistry -  

E-Print Network (OSTI)

chemie 07 Inorganic chemistry 11.14 - 08 Organische chemie 08 Organic chemistry 12.11 - 10 Didactics and priciples of chemistry 14.03 - 16 Vervolgwerken - Annuals 16 Book series and annuals 14Onderwerpscodes Chemie - Farmacie / Subject headings Chemistry - Pharmacy, 2009, April1 Rubrieken

Galis, Frietson

354

Chemistry and Metallurgy Research Facility The Los Alamos National Laboratory (LANL) Chemistry and  

E-Print Network (OSTI)

CMR Chemistry and Metallurgy Research Facility The Los Alamos National Laboratory (LANL) Chemistry analytical chemistry and metallurgy. In 1952, the first LANL CMR facility was completed. At that time chemistry and metallurgy. Upgrades to the original CMR were completed in 2002. In 2012, the CMR facility

355

Roadmap: Chemistry Materials Chemistry -Bachelor of Science [AS-BS-CHEM-MCHM  

E-Print Network (OSTI)

Roadmap: Chemistry ­ Materials Chemistry - Bachelor of Science [AS-BS-CHEM-MCHM] College of Arts and Sciences Department of Chemistry and Biochemistry Catalog Year: 2012­2013 Page 1 of 3 | Last Updated: 17 Major GPA Important Notes Semester One: [14 Credit Hours] CHEM 10060 General Chemistry I (4) and CHEM

Sheridan, Scott

356

BS in CHEMISTRY EDUCATION (692828) MAP Sheet Department of Chemistry and Biochemistry  

E-Print Network (OSTI)

BS in CHEMISTRY EDUCATION (692828) MAP Sheet Department of Chemistry and Biochemistry For students a cumulative 2.85 GPA in teaching major/minor courses to qualify for student teaching. --The Chemistry and Biochemistry Department requires the final 10 hours of required chemistry credit must be taken in residence

Olsen Jr., Dan R.

357

Roadmap: Chemistry Materials Chemistry -Bachelor of Science [AS-BS-CHEM-MCHM  

E-Print Network (OSTI)

Roadmap: Chemistry ­ Materials Chemistry - Bachelor of Science [AS-BS-CHEM-MCHM] College of Arts and Sciences Department of Chemistry and Biochemistry Catalog Year: 2013-2014 Page 1 of 3 | Last Updated: 30 Major GPA Important Notes Semester One: [14 Credit Hours] CHEM 10060 General Chemistry I (4) and CHEM

Sheridan, Scott

358

BA in CHEMISTRY (692827) MAP Sheet Department of Chemistry and Biochemistry  

E-Print Network (OSTI)

BA in CHEMISTRY (692827) MAP Sheet Department of Chemistry and Biochemistry For students entering in major courses. --The Chemistry and Biochemistry Department requires the final 10 hours of required chemistry credit to be taken in residence at BYU for this degree program. These hours may also go toward BYU

Seamons, Kent E.

359

Why Study Chemistry at ESF A Rigorous Education: Chemistry faculty bring their  

E-Print Network (OSTI)

Why Study Chemistry at ESF A Rigorous Education: Chemistry faculty bring their expertise in cutting and real-world examples. Also, in addition to the usual chemistry courses, undergraduates take three our students receive: 95% of our students are employed in chemistry or accepted into graduate

Chatterjee, Avik P.

360

Minor in Chemistry Handout1.doc (04/30/08) Department of Chemistry  

E-Print Network (OSTI)

Minor in Chemistry Handout1.doc (04/30/08) Department of Chemistry Undergraduate Student Academic.fleming@ucr.edu Minor in Chemistry Procedure: It is assumed that you have completed the requirements listed in section to Declare a Minor to Chemistry. Include the following: full name, student identification number, and email

Reed, Christopher A.

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

Roadmap: Chemistry Chemistry -Bachelor of Science [AS-BS-CHEM-CHEM  

E-Print Network (OSTI)

Roadmap: Chemistry ­ Chemistry - Bachelor of Science [AS-BS-CHEM-CHEM] College of Arts and Sciences Department of Chemistry and Biochemistry Catalog Year: 2013-2014 Page 1 of 2 | Last Updated: 30-Apr-13/LNHD for certification by the American Chemical Society CHEM 10060 General Chemistry I (4) and CHEM 10062 General

Sheridan, Scott

362

CHEMISTRY AND TECHNOLOGY 2011 Academic regulations for the Bachelor's degree in Chemistry and Technology  

E-Print Network (OSTI)

CHEMISTRY AND TECHNOLOGY 2011 Academic regulations for the Bachelor's degree in Chemistry Bachelor's degree programme provides graduates with the title Bachelor of Science (BSc) in Chemistry and Technology. Academic line and main subject areas of the degree The Bachelor's degree in Chemistry

363

Chemistry -Bachelor of Science (SCH5UG) Total Credits Required: 128 Chemistry/Environmental -ACS Certified  

E-Print Network (OSTI)

Chemistry - Bachelor of Science (SCH5UG) Total Credits Required: 128 Chemistry/Environmental - ACS credits Course Credits Course Credits CH1150 University Chemistry I AND 3 BL1040 Principles of Biology 4 CH1151 University Chemistry Lab 1 AND 1 BL3310 Environmental Microbiology 3 CH1153 University

364

BS in CHEMISTRY EDUCATION (692828) MAP Sheet Department of Chemistry and Biochemistry  

E-Print Network (OSTI)

BS in CHEMISTRY EDUCATION (692828) MAP Sheet Department of Chemistry and Biochemistry For students is allowed in major courses. --The Chemistry and Biochemistry Department requires the final 10 hours of required chemistry credit must be taken in residence at BYU for this degree program. These hours may also

Seamons, Kent E.

365

Roadmap: Chemistry Chemistry -Bachelor of Science [AS-BS-CHEM-CHEM  

E-Print Network (OSTI)

Roadmap: Chemistry ­ Chemistry - Bachelor of Science [AS-BS-CHEM-CHEM] College of Arts and Sciences Department of Chemistry and Biochemistry Catalog Year: 2012­2013 Page 1 of 2 | Last Updated: 17-May-12/LNHD for certification by the American Chemical Society CHEM 10060 General Chemistry I (4) and CHEM 10062 General

Sheridan, Scott

366

Prebiotic chemistry: a new modus operandi  

Science Journals Connector (OSTI)

...Lilley and John D. Sutherland Prebiotic chemistry: a new modus operandi Matthew W. Powner...mrc-lmb.cam.ac.uk ). School of Chemistry, The University of Manchester, , Oxford...implausibility of multi-component reaction chemistry producing such a mixture. The concept...

2011-01-01T23:59:59.000Z

367

Safety Statement Virginia Tech Chemistry Department  

E-Print Network (OSTI)

Safety Statement Virginia Tech Chemistry Department This safety statement was prepared by the Chemistry Department Safety Committee and approved by the Department Chairperson on October 24, 2006. 1. Laboratory safety, chemical hygiene, and environmental responsibility are central objectives of the Chemistry

Crawford, T. Daniel

368

The School of Chemistry Handbook for Postgraduate  

E-Print Network (OSTI)

The School of Chemistry Handbook for Postgraduate Research Students 2013/14 School of Chemistry FACULTY OF MATHS AND PHYSICAL SCIENCES #12;2 Welcome The School of Chemistry welcomes new postgraduate students to Leeds and welcomes back returning students. This handbook is intended to give you information

Rzepa, Henry S.

369

GENERAL CHEMISTRY TEXTBOOK LIST ISBN Number  

E-Print Network (OSTI)

FALL 2013 GENERAL CHEMISTRY TEXTBOOK LIST Course Number ISBN Number Title of Text and/or Material Edition Author Publishers 11100 978-1-2591-9687-4 Introduction to Chemistry, 3rd ed. (packaged w 978-1-2591-6192-6 Chemistry, The Molecular Nature of Matter and Change, 6e (packaged w

Jiang, Wen

370

ATS621, Fall 2013 Atmospheric Chemistry  

E-Print Network (OSTI)

ATS621, Fall 2013 Atmospheric Chemistry Tuesdays and Thursdays, 10 ­ 10:50, 212B ACRC) 491-8587 Teaching Assistant: Lauren Potter Atmospheric Chemistry Bldg., Room 11 Lepotter, transport, chemistry and deposition impact atmospheric chemical composition; 2) Explain the chemical

371

4, 419470, 2004 HOx chemistry in  

E-Print Network (OSTI)

ACPD 4, 419­470, 2004 HOx chemistry in clean marine air R. Sommariva et al. Title Page Abstract-ID: 1680-7375/acpd/2004-4-419 © European Geosciences Union 2004 Atmospheric Chemistry and Physics Discussions OH and HO2 chemistry in clean marine air during SOAPEX-2 R. Sommariva 1 , A.-L. Haggerstone 2 , L

Paris-Sud XI, Université de

372

ATS621, Fall 2014 Atmospheric Chemistry  

E-Print Network (OSTI)

ATS621, Fall 2014 Atmospheric Chemistry Monday and Wednesday, 9 ­ 9:50, 212B ACRC Instructor: Prof) Understand quantitatively how emissions, transport, chemistry and deposition impact atmospheric chemical to Atmospheric Chemistry, D.J. Jacob Princeton University Press, 1999 PDF versions of the chapters can

Collett Jr., Jeffrey L.

373

Chemistry Department Assessment Table of Contents  

E-Print Network (OSTI)

0 Chemistry Department Assessment May, 2006 Table of Contents Page Executive Summary 1 Prelude 1 Mission Statement and Learning Goals 1 Facilities 2 Staffing 3 Students: Chemistry Majors and Student Taking Service Courses Table: 1997-2005 graduates profile Table: GRE Score for Chemistry Majors, 1993

Bogaerts, Steven

374

College of Arts and Sciences CHE Chemistry  

E-Print Network (OSTI)

College of Arts and Sciences CHE Chemistry KEY: # = new course * = course changed = course dropped will be discussed in terms of their properties and impact on our everyday real world experience. CHE 103 CHEMISTRY, or completion of MA 108R. CHE 104 INTRODUCTORY GENERAL CHEMISTRY. (3

MacAdam, Keith

375

Chemistry in Sustainable Development and Global Environment  

Science Journals Connector (OSTI)

Chemistry in Sustainable Development and Global Environment ... Surely, a subject as all-encompassing as chemistry can play a role in sustainability. ... SolEn for a Sustainable Future: Developing and Teaching a Multidisciplinary Course on Solar Energy To Further Sustainable Education in Chemistry ...

Peter Abeta Iyere

2008-12-01T23:59:59.000Z

376

ARM - Field Campaign - Biogenic Aerosols - Effects on Clouds and Climate:  

NLE Websites -- All DOE Office Websites (Extended Search)

govCampaignsBiogenic Aerosols - Effects on Clouds and Climate: govCampaignsBiogenic Aerosols - Effects on Clouds and Climate: FIGAERO-ToF-CIMS Instrument in Hyytiala with AMF-2 Related Campaigns Biogenic Aerosols- Effects on Clouds and Climate 2014.02.01, Petäjä, AMF Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Biogenic Aerosols - Effects on Clouds and Climate: FIGAERO-ToF-CIMS Instrument in Hyytiala with AMF-2 2014.04.01 - 2014.06.01 Lead Scientist : Joel Thornton Description The ultimate goal of this work is to connect field and laboratory observations of organic aerosol chemical and physical properties during the nascent growth stage to the diurnal and vertical distributions of aerosol abundance measured over the boreal forest by the ARM Mobile Facility 2

377

Aerosol Modeling at LLNL - Our capability, results, and perspective  

NLE Websites -- All DOE Office Websites (Extended Search)

Aerosol Indirect Effects to Cloud Aerosol Indirect Effects to Cloud Parameterizations in Short-Range Weather Forecasts with CAM3 Over the Southern Great Plains during May 2003 IOP Lawrence Livermore National Laboratory This work performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344 Catherine Chuang, James Boyle Shaocheng Xie and James Kelly LLNL-POST-401948 March 11, 2008 Why are aerosol/cloud interactions important? The greatest uncertainty in the assessment of radiative forcing arises from the interactions of aerosols with clouds. Radiative forcing of climate between 1750 and 2005 (IPCC, 2007) Sources of uncertainty Emissions Gas to particle conversion Aerosol size distribution Linkage between aerosols

378

ARM - Field Campaign - 2007 Cumulus Humilis Aerosol Process Study (CHAPS)  

NLE Websites -- All DOE Office Websites (Extended Search)

7 Cumulus Humilis Aerosol Process Study (CHAPS) 7 Cumulus Humilis Aerosol Process Study (CHAPS) Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : 2007 Cumulus Humilis Aerosol Process Study (CHAPS) 2007.06.04 - 2007.06.25 Lead Scientist : Carl Berkowitz For data sets, see below. Description The primary goal of this campaign was to characterize and contrast freshly emitted aerosols above, within and below fields of cumulus humilis (or fair-weather cumulus, FWC) and to use these observations to address how below-cloud and above-cloud aerosol optical and cloud nucleating properties differ downwind of a mid-size city relative to similar aerosols in air less affected by emissions. The observations from this campaign can also be used to aid in the development and evaluation of parameterizations of the

379

AEROgui: A graphical user interface for the optical properties of aerosols  

Science Journals Connector (OSTI)

Atmospheric aerosols have an uncertain effect on climate, and serious impact on human health. The uncertainty in the aerosols role on climate has several sources. First, aerosols present a great spatial and temporal variability. The spatial variability ...

R. Pedrós; J.L. Gómez-Amo; C.R. Marcos; M.P. Utrillas; S. Gandía; F. Tena; J.A. Martinez Lozano

380

Retrieval of ozone and nitrogen dioxide concentrations from Stratospheric Aerosol and Gas Experiment III (SAGE III)  

E-Print Network (OSTI)

Retrieval of ozone and nitrogen dioxide concentrations from Stratospheric Aerosol and Gas extinction. We retrieve ozone and nitrogen dioxide number densities and aerosol extinction from transmission), Retrieval of ozone and nitrogen dioxide concentrations from Stratospheric Aerosol and Gas Experiment III

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

Aerosol climate effects and air quality impacts from 1980 to 2030  

E-Print Network (OSTI)

Aerosol climate e?ects and air quality impacts from 1980 toAerosol climate e?ects and air quality impacts from 1980 toAerosol climate e?ects and air quality impacts from 1980 to

Menon, Surabi

2008-01-01T23:59:59.000Z

382

Statistical analysis of aerosol species, trace gasses, and meteorology in Chicago  

E-Print Network (OSTI)

possible pollutant sources. Keywords Atmospheric aerosols . Canonical correlation analysis . Chicago air pollution studies involve collection and anal- ysis of atmospheric aerosols and concurrent meteorol- ogy) and principal component analysis (PCA) were applied to atmospheric aerosol and trace gas concentrations

O'Brien, Timothy E.

383

Final Report for Ă?¢Ă?Â?Ă?Â?Cloud-Aerosol Physics in Super-Parameterized Atmospheric Regional Climate Simulations (CAP-SPARCS)Ă?¢Ă?Â?Ă?Âť (DE-SC0002003) for 8/15/2009 through 8/14/2012  

SciTech Connect

Improving the representation of local and non-local aerosol interactions in state-of-the-science regional climate models is a priority for the coming decade (Zhang, 2008). With this aim in mind, we have combined two new technologies that have a useful synergy: (1) an aerosol-enabled regional climate model (Advanced Weather Research and Forecasting Model with Chemistry WRF-Chem), whose primary weakness is a lack of high quality boundary conditions and (2) an aerosol-enabled multiscale modeling framework (PNNL Multiscale Aerosol Climate Model (MACM)), which is global but captures aerosol-convection-cloud feedbacks, and thus an ideal source of boundary conditions. Combining these two approaches has resulted in an aerosol-enabled modeling framework that not only resolves high resolution details in a particular region, but crucially does so within a global context that is similarly faithful to multi-scale aerosol-climate interactions. We have applied and improved the representation of aerosol interactions by evaluating model performance over multiple domains, with (1) an extensive evaluation of mid-continent precipitation representation by multiscale modeling, (2) two focused comparisons to transport of aerosol plumes to the eastern United States for comparison with observations made as part of the International Consortium for Atmospheric Research on Transport and Transformation (ICARTT), with the first being idealized and the second being linked to an extensive wildfire plume, and (3) the extension of these ideas to the development of a new approach to evaluating aerosol indirect effects with limited-duration model runs by �¢����nudging�¢��� to observations. This research supported the work of one postdoc (Zhan Zhao) for two years and contributed to the training and research of two graduate students. Four peer-reviewed publications have resulted from this work, and ground work for a follow-on project was completed.

Lynn M. Russell; Richard C.J. Somerville

2012-11-05T23:59:59.000Z

384

Priorities for In-situ Aerosol Measurements  

NLE Websites -- All DOE Office Websites (Extended Search)

Priorities for In-situ Priorities for In-situ Aerosol Measurements Parameters * Aerosol light absorption coefficient - spectral, including UV, vis, and IR - as f(RH), and at ambient RH * Phase function - or relevant integral properties (how many?) * Ice nuclei * Scattering vs. RH, for RH>90% * CCN, as f(S, D p ) * Size distribution * Chemical composition - for determining climate forcing, vs. radiative effect Calibration * Number concentration * Size and shape * Light absorption reference method Characterization * Accuracy and precision - need well-understood error bars * Algorithm comparisons * Closure studies * Facilities for method testing - aircraft time Methods * Inlets - shattering/splashing - location on airplane - passing efficiency - inletless analyzers/samplers * Packaging - modular/portable "pods" for multiple a/c

385

Aerosol and graphitic carbon content of snow  

SciTech Connect

Snow samples from southern New Mexico, west Texas, Antarctica, and Greenland were analyzed for aerosol and graphitic carbon. Graphitic carbon contents were found to be between 2.2 and 25 ..mu..g L/sup -1/ of snow meltwater; water-insoluble aerosol content varied between 0.62 and 8.5 mg L/sup -1/. For comparison, two samples of Camp Century, Greenland, ice core, having approximate ages of 4,000 and 6,000 years, were also analyzed. Ice core graphitic carbon contents were found to be 2.5 and 1.1 ..mu..g L/sup -1/. copyrightAmerican Geophysical Union 1987

Chy-acute-accentlek, P.; Srivastava, V.; Cahenzli, L.; Pinnick, R.G.; Dod, R.L.; Novakov, T.; Cook, T.L.; Hinds, B.D.

1987-08-20T23:59:59.000Z

386

Revised 4/18/12 Department of Chemistry  

E-Print Network (OSTI)

Revised 4/18/12 Department of Chemistry Undergraduate Handbook #12;2 #12;3 Table of Contents THE CHAIRMAN'S WELCOME 7 CAREER PATHS IN CHEMISTRY AND MEDICINAL CHEMISTRY 8 CHEMISTRY PROGRAMS AT UB 11 ADMISSION TO THE PROGRAM 14 CHANGING YOUR MAJOR TO CHEMISTRY/ MEDICINAL CHEMISTRY 14 ADVISEMENT 15 UB HUB

ColĂłn, Luis A.

387

Revised 8/01/12 Department of Chemistry  

E-Print Network (OSTI)

Revised 8/01/12 Department of Chemistry Undergraduate Handbook #12;2 #12;3 Table of Contents THE CHAIRMAN'S WELCOME 7 CAREER PATHS IN CHEMISTRY AND MEDICINAL CHEMISTRY 7 CHEMISTRY PROGRAMS AT UB 11 ADMISSION TO THE PROGRAM 14 CHANGING YOUR MAJOR TO CHEMISTRY/ MEDICINAL CHEMISTRY 14 ADVISEMENT 15 UB HUB

ColĂłn, Luis A.

388

Courses: Chemistry (CHEM) Page 277Sonoma State University 2013-2014 Catalog Chemistry (CHEM)  

E-Print Network (OSTI)

Courses: Chemistry (CHEM) Page 277Sonoma State University 2013-2014 Catalog Chemistry (CHEM) CHeM nC SeLeCted topiCS (0) CHeM 102 CHeMiStry And SoCiety (3) Lecture, 2 hours; laboratory, 3 hours. An introductory course in chemistry for non-majors. Covers the basics of chemistry related to everyday life

Ravikumar, B.

389

On The Importance of Organic Oxygen for Understanding Organic Aerosol  

NLE Websites -- All DOE Office Websites (Extended Search)

On The Importance of Organic Oxygen for Understanding Organic Aerosol On The Importance of Organic Oxygen for Understanding Organic Aerosol Particles Title On The Importance of Organic Oxygen for Understanding Organic Aerosol Particles Publication Type Journal Article Year of Publication 2006 Authors Pang, Yanbo, B. J. Turpin, and Lara A. Gundel Journal Journal of Aerosol Science and Technology Volume 40 Start Page Chapter Pagination 128-133 Abstract This study shows how aerosol organic oxygen data could provide new and independent information about organic aerosol mass, aqueous solubility of organic aerosols, formation of secondary organic aerosol (SOA) and the relative contributions of anthropogenic and biogenic sources. For more than two decades atmospheric aerosol organic mass concentration has usually been estimated by multiplying the measured carbon content by an assumed organic mass (OM)-to-organic carbon (OC ) factor of 1.4. However, this factor can vary from 1.0 to 2.5 depending on location. This great uncertainty about aerosol organic mass limits our understanding of the influence of organic aerosol on climate, visibility and health.New examination of organic aerosol speciation data shows that the oxygen content is the key factor responsible for the observed range in the OM-to-OC factor. When organic oxygen content is excluded, the ratio of non-oxygen organic mass to carbon mass varies very little across different environments (1.12 to 1.14). The non-oxygen-OM-to-non-oxygen OC factor for all studied sites (urban and non-urban) is 1.13± 0.02. The uncertainty becomes an order of magnitude smaller than the uncertainty in the best current estimates of organic mass to organic carbon ratios (1.6± 0.2 for urban and 2.1± 0.2 for non-urban areas). When aerosol organic oxygen data become available, organic aerosol mass can be quite accurately estimated using just OC and organic oxygen (OO) without the need to know whether the aerosol is fresh or aged. In addition, aerosol organic oxygen data will aid prediction of water solubility since compounds with OO-to-OC higher than 0.4 have water solubilities higher than 1g per 100 g water

390

Aerosol generation and entrainment model for cough simulations.  

E-Print Network (OSTI)

??The airborne transmission of diseases is of great concern to the public health community. The possible spread of infectious disease by aerosols is of particular… (more)

Ersahin, Cem.

2007-01-01T23:59:59.000Z

391

ARM AOS Processing Status and Aerosol Intensive Properties VAP  

NLE Websites -- All DOE Office Websites (Extended Search)

Andrews, and P. J. Sheridan National Oceanic and Atmospheric Administration Boulder, Colorado Abstract The Atmospheric Radiation Measurement (ARM) Aerosol Observing System (AOS)...

392

Method of Preparing Super-Concentrated Jets From Dense Aerosol...  

NLE Websites -- All DOE Office Websites (Extended Search)

Michael J. Hay, Ernest J. Valeo, and Nathaniel J. Fisch This is improvement in aerodynamic focusing of dilute aerosol suspensions. All previous work on this subject has...

393

ARM - Field Campaign - Pajarito Aerosol Coupling to Ecosystems...  

NLE Websites -- All DOE Office Websites (Extended Search)

properties during the winter-spring transition. Opportunity to investigate fire and automobile emission interactions with biogenic aerosols will also harnessed MAOS will be...

394

Heavy Duty Diesel Engine Exhaust Aerosol Particle and Ion Measurements  

Science Journals Connector (OSTI)

Heavy Duty Diesel Engine Exhaust Aerosol Particle and Ion Measurements ... diesel engines have received increasing attention due to their potential health effects. ...

Tero Lähde; Topi Rönkkö; Annele Virtanen; Tanja J. Schuck; Liisa Pirjola; Kaarle Hämeri; Markku Kulmala; Frank Arnold; Dieter Rothe; Jorma Keskinen

2008-12-09T23:59:59.000Z

395

Raman Lidar Measurements of Aerosols and Water Vapor During the...  

NLE Websites -- All DOE Office Websites (Extended Search)

modifications reduced but could not eliminate these adverse effects. The Raman lidar water vapor (aerosol extinction) measurements produced by these modified algorithms were,...

396

aerosol influenza transmission: Topics by E-print Network  

NLE Websites -- All DOE Office Websites (Extended Search)

and Information Sciences Websites Summary: . In preliminary work, we used artificial neural networks (ANNs) to construct global aerosol predictors by learningIntegration...

397

E-Print Network 3.0 - aerosol particle size Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Summary: of aerosol over many orders-of-magnitude of particle size range, from subcritical clusters on the molecular... to modeling aerosol dynamics under conditions of new...

398

E-Print Network 3.0 - aerosol modeling decadal Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Geosciences 8 Absorbing aerosols and pre-summer monsoon hydroclimate variability over the Indian subcontinent: The challenge in investigating links Summary: in the aerosol-monsoon...

399

E-Print Network 3.0 - aerosol radiative forcing Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

No. DE- Summary: : WHY MEASUREMENTS ALONE CANNOT QUANTIFY AEROSOL RADIATIVE FORCING OF CLIMATE CHANGE Stephen E. Schwartz... of radiative forcing of climate change by aerosols,...

400

E-Print Network 3.0 - aerosols nanometriques application Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

is studying how aerosol particles affect everything from Summary: of aerosol particles on climate change, public health, and renewable energy applications. In particular, he......

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

E-Print Network 3.0 - aerosol lung inhalation Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

aerosolized by means... is aerosolized upon inhalation by utilizing the ... Source: Groningen, Rijksuniversiteit - Centre for Ecological and Evolutionary Studies, Department of...

402

E-Print Network 3.0 - aerosol condensation model Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Applied Science Collection: Environmental Sciences and Ecology 8 DETERMINING AEROSOL RADIATIVE FORCING AT ARM SITES Summary: OF AEROSOL DIRECT FORCING By linear model and by...

403

E-Print Network 3.0 - aerosol code comparisons Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

and Ecology 4 Estimates of global radiative forcing derived from the GlobAEROSOL dataset Summary: -sky direct aerosol radiative forcing. The Edwards and Slingo (1996)...

404

Aerosol-Cloud-Precipitation Interactions in the Trade Wind Boundary Layer.  

E-Print Network (OSTI)

??This dissertation includes an overview of aerosol, cloud, and precipitation properties associated with shallow marine cumulus clouds observed during the Barbados Aerosol Cloud Experiment (BACEX,… (more)

Jung, Eunsil

2012-01-01T23:59:59.000Z

405

E-Print Network 3.0 - aerosols harbor diverse Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Cloud & Aerosol Process Group CSDESRLNOAA Presented at: NIST... Aerosol Metrology for Climate Workshop 15th March, 2011 12;Deposition Snow Darkens and Warms BC...

406

E-Print Network 3.0 - aerosol light absorption Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

AND Summary: population centers were used to calculate the aerosol forcing due to light scattering and absorption. Directly... , NY www.bnl.gov ABSTRACT Aerosols influence...

407

Large Aerosols Play Unexpected Role in Ganges Valley | U.S. DOE...  

Office of Science (SC) Website

The data have revealed that large aerosols in this region absorb a greater amount of light than expected. The Science Aerosol particles in the atmosphere may absorb solar...

408

E-Print Network 3.0 - aerosol atmospheric interactions Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

for Climate Summary: order estimates of aerosol-climate interaction But... only Earth System Models can include all... of the interactions (in theory at least) 12;Aerosols <>...

409

E-Print Network 3.0 - alkali sulfate aerosol Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Aerosol Formation during... " and "Mechanism of Alkali Sulfate Aerosols Formation during Biomass Combustion" describe the development... the ... Source: Ris National Laboratory...

410

E-Print Network 3.0 - atmospheric aerosol size Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

for about ten percent of all aerosols in the atmosphere. We... , can actually absorb solar energy and warm the atmosphere. Atmospheric aerosols are very important... by...

411

BNL Photo- and Radiation Chemistry Group Members  

NLE Websites -- All DOE Office Websites (Extended Search)

and Radiation Chemistry Group and Radiation Chemistry Group Chemistry Department, Brookhaven National Laboratory Staff Diane E. Cabelli Redox chemistry of high oxidation state transition-metal complexes, particularly CuIII, MnIII/MnIV; Superoxide chemistry in aqueous solutions: dismutation of superoxide radical; copper-zinc superoxide dismutase and model compounds. Andrew R. Cook Excited state structure, dynamics and electron transfer reactions of a variety of organic radicals in both low temperature matrices and room temperature solutions using radiation chemistry techniques. Robert A. Crowell Ultrafast reaction phenomena. Etsuko Fujita Photochemistry of transition-metal complexes, small molecule activation by high- and low-oxidation state metal complexes; and biomimetic chemistry of porphyrins and enzymes.

412

Development of Aerosol Models for Radiative Flux Calculations at ARM Sites: Utility of Trajectory Clustering for Characterizing Aerosol Climatology  

NLE Websites -- All DOE Office Websites (Extended Search)

Development of Aerosol Models for Radiative Flux Development of Aerosol Models for Radiative Flux Calculations at ARM Sites: Utility of Trajectory Clustering for Characterizing Aerosol Climatology E. Andrews Cooperative Institute for Research in the Environment University of Colorado Boulder, Colorado E. Andrews, J. A. Ogren, P. J. Sheridan, and J. M. Harris Climate Monitoring and Diagnostics Laboratory National Oceanic and Atmospheric Administration Boulder, Colorado P. K. Quinn Pacific Marine Environmental Laboratory National Oceanic and Atmospheric Administration Seattle, Washington Abstract The uncertainties associated with assumptions of generic aerosol properties in radiative transfer codes are unknown, which means that these uncertainties are frequently invoked when models and

413

UCLA PHYSICAL CHEMISTRY CONCENTRATION 2012-2013 CHEMISTRY MAJOR (B.S.), PHYSICAL CHEMISTRY CONCENTRATION: This concentration is designed primarily for  

E-Print Network (OSTI)

UCLA PHYSICAL CHEMISTRY CONCENTRATION 2012-2013 CHEMISTRY MAJOR (B.S.), PHYSICAL CHEMISTRY CONCENTRATION: This concentration is designed primarily for Chemistry majors who are interested in attending graduate school in Physical Chemistry/Physics or related areas. It may also satisfy some of the needs

Levine, Alex J.

414

NUMERICAL VERIFICATION OF EQUILIBRIUM CHEMISTRY  

SciTech Connect

A numerical tool is in an advanced state of development to compute the equilibrium compositions of phases and their proportions in multi-component systems of importance to the nuclear industry. The resulting software is being conceived for direct integration into large multi-physics fuel performance codes, particularly for providing boundary conditions in heat and mass transport modules. However, any numerical errors produced in equilibrium chemistry computations will be propagated in subsequent heat and mass transport calculations, thus falsely predicting nuclear fuel behaviour. The necessity for a reliable method to numerically verify chemical equilibrium computations is emphasized by the requirement to handle the very large number of elements necessary to capture the entire fission product inventory. A simple, reliable and comprehensive numerical verification method is presented which can be invoked by any equilibrium chemistry solver for quality assurance purposes.

Piro, Markus [Royal Military College of Canada; Lewis, Brent [Royal Military College of Canada; Thompson, Dr. William T. [Royal Military College of Canada; Simunovic, Srdjan [ORNL; Besmann, Theodore M [ORNL

2010-01-01T23:59:59.000Z

415

Storytelling with Chemistry and Related Hands-On Activities: Informal Learning Experiences To Prevent “Chemophobia” and Promote Young Children’s Scientific Literacy  

Science Journals Connector (OSTI)

The dissemination of chemistry has been experienced as a difficult task, largely because of the negative image that the public has of this science, but also because of its inherent complexity and its own semantics and symbolism. Science centers, as ...

Carla Morais

2014-10-22T23:59:59.000Z

416

NWChem: scalable parallel computational chemistry  

SciTech Connect

NWChem is a general purpose computational chemistry code specifically designed to run on distributed memory parallel computers. The core functionality of the code focuses on molecular dynamics, Hartree-Fock and density functional theory methods for both plane-wave basis sets as well as Gaussian basis sets, tensor contraction engine based coupled cluster capabilities and combined quantum mechanics/molecular mechanics descriptions. It was realized from the beginning that scalable implementations of these methods required a programming paradigm inherently different from what message passing approaches could offer. In response a global address space library, the Global Array Toolkit, was developed. The programming model it offers is based on using predominantly one-sided communication. This model underpins most of the functionality in NWChem and the power of it is exemplified by the fact that the code scales to tens of thousands of processors. In this paper the core capabilities of NWChem are described as well as their implementation to achieve an efficient computational chemistry code with high parallel scalability. NWChem is a modern, open source, computational chemistry code1 specifically designed for large scale parallel applications2. To meet the challenges of developing efficient, scalable and portable programs of this nature a particular code design was adopted. This code design involved two main features. First of all, the code is build up in a modular fashion so that a large variety of functionality can be integrated easily. Secondly, to facilitate writing complex parallel algorithms the Global Array toolkit was developed. This toolkit allows one to write parallel applications in a shared memory like approach, but offers additional mechanisms to exploit data locality to lower communication overheads. This framework has proven to be very successful in computational chemistry but is applicable to any engineering domain. Within the context created by the features above NWChem has grown into a general purpose computational chemistry code that supports a wide variety of energy expressions and capabilities to calculate properties based there upon. The main energy expressions are classical mechanics force fields, Hartree-Fock and DFT both for finite systems and condensed phase systems, coupled cluster, as well as QM/MM. For most energy expressions single point calculations, geometry optimizations, excited states, and other properties are available. Below we briefly discuss each of the main energy expressions and the critical points involved in scalable implementations thereof.

van Dam, Hubertus JJ; De Jong, Wibe A.; Bylaska, Eric J.; Govind, Niranjan; Kowalski, Karol; Straatsma, TP; Valiev, Marat

2011-11-01T23:59:59.000Z

417

Physicochemical Characterization of Capstone Depleted Uranium Aerosols I: Uranium Concentration in Aerosols as a Function of Time and Particle Size  

SciTech Connect

During the Capstone Depleted Uranium (DU) Aerosol Study, aerosols containing depleted uranium were produced inside unventilated armored vehicles (i.e., Abrams tanks and Bradley Fighting Vehicles) by perforation with large-caliber DU penetrators. These aerosols were collected and characterized, and the data were subsequently used to assess human health risks to personnel exposed to DU aerosols. The DU content of each aerosol sample was first quantified by radioanalytical methods, and selected samples, primarily those from the cyclone separator grit chambers, were analyzed radiochemically. Deposition occurred inside the vehicles as particles settled on interior surfaces. Settling rates of uranium from the aerosols were evaluated using filter cassette samples that collected aerosol as total mass over eight sequential time intervals. A moving filter was used to collect aerosol samples over time particularly within the first minute after the shot. The results demonstrate that the peak uranium concentration in the aerosol occurred in the first 10 s, and the concentration decreased in the Abrams tank shots to about 50% within 1 min and to less than 2% 30 min after perforation. In the Bradley vehicle, the initial (and maximum) uranium concentration was lower than those observed in the Abrams tank and decreased more slowly. Uranium mass concentrations in the aerosols as a function of particle size were evaluated using samples collected in the cyclone samplers, which collected aerosol continuously for 2 h post perforation. The percentages of uranium mass in the cyclone separator stages from the Abrams tank tests ranged from 38% to 72% and, in most cases, varied with particle size, typically with less uranium associated with the smaller particle sizes. Results with the Bradley vehicle ranged from 18% to 29% and were not specifically correlated with particle size.

Parkhurst, MaryAnn; Cheng, Yung-Sung; Kenoyer, Judson L.; Traub, Richard J.

2009-03-01T23:59:59.000Z

418

Aerosol radiative forcing and the accuracy of satellite aerosol optical depth retrieval  

E-Print Network (OSTI)

, New Mexico, USA Michael Mishchenko Goddard Institute for Space Studies, NASA, New York, New York, USA between t = 0.1 and t = 0.8. The Department of Energy research satellite instrument, the Multispectral [Hobbs et al., 1997]. The aerosols' direct effect involves their interaction with solar and terrestrial

419

CLOUD PHYSICS From aerosol-limited to invigoration  

E-Print Network (OSTI)

CLOUD PHYSICS From aerosol-limited to invigoration of warm convective clouds Ilan Koren,1 * Guy Dagan,1 Orit Altaratz1 Among all cloud-aerosol interactions, the invigoration effect is the most elusive. Most of the studies that do suggest this effect link it to deep convective clouds with a warm base

Napp, Nils

420

Deposition of Biological Aerosols on HVAC Heat Exchangers  

E-Print Network (OSTI)

LBNL-47669 Deposition of Biological Aerosols on HVAC Heat Exchangers Jeffrey Siegel and Iain Walker of Biological Aerosols on HVAC Heat Exchangers Jeffrey A. Siegel Iain S. Walker, Ph.D. ASHRAE Student Member that are found in commercial and residential HVAC systems of 1 - 6 m/s (200 - 1200 ft/min), particle diameters

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

Climatology of aerosol optical depth in northcentral Oklahoma: 19922008  

E-Print Network (OSTI)

of aerosol models; for identification of aerosols from spe- cific events (e.g., the Central American fires Radiation Measurement Program central facility near Lamont, Oklahoma, since the fall of 1992. Most dimming; that is, the decrease in solar radiation reaching Earth's surface. Additionally, the wavelength

422

Determination of vertical profiles of aerosol extinction, single scatter  

NLE Websites -- All DOE Office Websites (Extended Search)

Determination of vertical profiles of aerosol extinction, single scatter Determination of vertical profiles of aerosol extinction, single scatter albedo and asymmetry parameter at Barrow. Sivaraman, Chitra Pacific Northwest National Laboratory Flynn, Connor Pacific Northwest National Laboratory Turner, David University of Wisconsin-Madison Category: Aerosols Efforts are currently underway to run and evaluate the Broadband Heating Rate Profile project at the ARM North Slope of Alaska (NSA) Barrow site for the time period March 2004 - February 2005. The Aerosol Best-Estimate (ABE) Value-Added Procedure (VAP) is to provide continuous estimates of vertical profiles of aerosol extinction, single-scatter albedo, and asymmetry parameter above the Northern Slopes of Alaska (NSA) facility. In the interest of temporal continuity, we have developed an algorithm that

423

Aerosol Retrievals under Partly Cloudy Conditions: Challenges and Perspectives  

SciTech Connect

There are lots of interesting and intriguing features of aerosols near clouds – many of which can be quite engaging, as well being useful and climate-related. Exploring aerosol with the aid of the remote sensing, in situ observations and numerical modeling has piqued our curiosity and led to improve insights into the nature of aerosol and clouds and their complex relationship. This chapter conveys the outstanding issues of cloudy-sky aerosol retrievals of important climate properties and outlines their fruitful connections to other research areas such as in situ measurements and model simulations. The chapter focuses mostly on treating the inverse problems in the context of the passive satellite remote sensing and how they can improve our understanding of the cloud-aerosol interactions. The presentation includes a basis in the inverse problem theory, reviews available approaches and discusses their applications to partly cloudy situations. Potential synergy of observations and model simulations is described as well.

Kassianov, Evgueni I.; Ovchinnikov, Mikhail; Berg, Larry K.; Flynn, Connor J.

2011-06-01T23:59:59.000Z

424

Do Diurnal Aerosol Changes Affect Daily Average Radiative Forcing?  

SciTech Connect

Strong diurnal variability of aerosol has been observed frequently for many urban/industrial regions. How this variability may alter the direct aerosol radiative forcing (DARF), however, is largely unknown. To quantify changes in the time-averaged DARF, we perform an assessment of 29 days of high temporal resolution ground-based data collected during the Two-Column Aerosol Project (TCAP) on Cape Cod, which is downwind of metropolitan areas. We demonstrate that strong diurnal changes of aerosol loading (about 20% on average) have a negligible impact on the 24-h average DARF, when daily averaged optical properties are used to find this quantity. However, when there is a sparse temporal sampling of aerosol properties, which may preclude the calculation of daily averaged optical properties, large errors (up to 100%) in the computed DARF may occur. We describe a simple way of reducing these errors, which suggests the minimal temporal sampling needed to accurately find the forcing.

Kassianov, Evgueni I.; Barnard, James C.; Pekour, Mikhail S.; Berg, Larry K.; Michalsky, Joseph J.; Lantz, K.; Hodges, G. B.

2013-06-17T23:59:59.000Z

425

Atmospheric aerosol monitoring at the Pierre Auger Observatory  

SciTech Connect

For a ground based cosmic-ray observatory the atmosphere is an integral part of the detector. Air fluorescence detectors (FDs) are particularly sensitive to the presence of aerosols in the atmosphere. These aerosols, consisting mainly of clouds and dust, can strongly affect the propagation of fluorescence and Cherenkov light from cosmic-ray induced extensive air showers. The Pierre Auger Observatory has a comprehensive program to monitor the aerosols within the atmospheric volume of the detector. In this paper the aerosol parameters that affect FD reconstruction will be discussed. The aerosol monitoring systems that have been deployed at the Pierre Auger Observatory will be briefly described along with some measurements from these systems.

Cester, R.; Chiosso, M.; Chirin, J.; Clay, R.; Dawson, B.; Fick, B.; Filipcic, A.; Garcia, B.; Grillo, A.; Horvat, M.; Iarlori, M.; Malek, M.; Matthews, J.; Matthews,; Melo, D.; Meyhandan, R.; Mostafa, M.; Mussa, R.; Prouza, M.; Raefert, B.; Rizi, V.

2005-07-01T23:59:59.000Z

426

Experiments related to the resuspension of aerosols during hydrogen burns  

SciTech Connect

We have performed seven ''add-on'' experiments in two large combustion facilities to investigate the capability of hydrogen burns to remove simulated structural and fission product aerosols previously deposited on small metal discs that have surfaces prototypical of those found in nuclear reactor containments. Our results suggest that hydrogen combustion provides an especially effective mechanism for removal (and, presumably, resuspension) of sedimented aerosols produced in a hypothetical nuclear reactor core-degradation or core-melting accident. The presence of condensing steam does not seem to assure adhesion of sedimented aerosols during hydrogen burns. Differences are exhibited between different surfaces as well as between types of aerosol. In-depth studies will be required to assess the impact exposure of sedimented aerosols to hydrogen burns might have on the radiological source term.

Nelson, L.S.; Guay, K.P.

1987-01-01T23:59:59.000Z

427

6, 43414373, 2006 Cloud-borne aerosol  

E-Print Network (OSTI)

.g., par- ticle nucleation, coagulation, gravitational settling, dry deposition); some involve AP attached to a single type of cloud/precipitation particle (e.g., aqueous and heteroge-25 neous chemistry), and some, transformation, and removal processes on the attachment state, one might expect that model simulations

Paris-Sud XI, Université de

428

Optimization of aerosol penetration through transport lines  

E-Print Network (OSTI)

, F is the numerical reading from the fluorometer , L is the liquid volume of the measured (23) solution, 8 is the testing time for each filter, and V is the filter flow rate during the sample period. Penetration, P, of aerosol through... defined maxima on the penetration versus Reynolds number (or flow rate, since the diameter is constant for a given tube) curves for each tube size. Also, in order to observe an optimum tube diameter , a (10) fixed flow rate of 86 L/min was tested for a...

Wong Luque, Fermin Samuel

2012-06-07T23:59:59.000Z

429

A shrouded probe aerosol sampling cyclone  

E-Print Network (OSTI)

the air stream. In the present design, three concentric shrouds and a probe will be attached to the entrance of the cyclone. The shroud concept was first used in an aircraft-horne sampling device for collecting tropospheric aerosol particles... by A. R. McFarland and S. A. Batterman. College Station, Texas: 1989. 5. Strauss, W. and S. J. Nainwaring: Air Pollution. London, Baltimore, Maryland: Edward Arnold, 1984. pp. 95-96. 6. Moore, N. E. , and A. R. NcFarland: Stairmand-Type Sampling...

Little, Stewart Craig

2012-06-07T23:59:59.000Z

430

Method of dispersing particulate aerosol tracer  

DOE Patents (OSTI)

A particulate aerosol tracer which comprises a particulate carrier of sheet silicate composition having a particle size up to one micron, and a cationic dopant chemically absorbed in solid solution in the carrier. The carrier is preferably selected from the group consisting of natural mineral clays such as bentonite, and the dopant is selected from the group consisting of rare earth elements and transition elements. The tracers are dispersed by forming an aqueous salt solution with the dopant present as cations, dispersing the carriers in the solution, and then atomizing the solution under heat sufficient to superheat the solution droplets at a level sufficient to prevent reagglomeration of the carrier particles.

O'Holleran, Thomas P. (Belleville, MI)

1988-01-01T23:59:59.000Z

431

Light Absorption by Secondary Organic Aerosol from ?-Pinene: Effects of Oxidants, Seed Aerosol Acidity, and Relative Humidity  

SciTech Connect

It is well known that light absorption from dust and black carbon aerosols has a warming effect on climate while light scattering from sulfate, nitrate, and sea salt aerosols has a cooling effect. However, there are large uncertainties associated with light absorption and scattering by different types of organic aerosols, especially in the near-UV and UV spectral regions. In this paper, we present the results from a systematic laboratory study focused on measuring light absorption by secondary organic aerosols (SOA) generated from ozonolysis or NO3 oxidation of ?-pinene in the presence of neutral and acidic sulfate seed aerosols. Light absorption was monitored using photoacoustic spectrometers at four different wavelengths: 355, 405, 532 and 870 nm. Light absorption at 355 and 405 nm was observed by SOA generated from oxidation of ?-pinene in the presence of acidic sulfate seed aerosols, under dry conditions. No absorption was observed when the relative humidity was elevated to greater than 27%, or in the presence of neutral sulfate seed aerosols. The light-absorbing compounds are speculated to be aldol condensation oligomers with organosulfate and organic nitrate groups. The results of this study also indicate that organic nitrates from ?-pinene SOA formed in the presence of neutral sulfate seed aerosols do not appear to absorb near-UV and UV radiation.

Song, Chen; Gyawali, Madhu S.; Zaveri, Rahul A.; Shilling, John E.; Arnott, W. Patrick

2013-10-25T23:59:59.000Z

432

Sources and Formation of OrganicSources and Formation of Organic Aerosols in our AtmosphereAerosols in our Atmosphere  

E-Print Network (OSTI)

;Carnegie Mellon University Smog Chamber Air supply Computer Temperature control Clean air 10 m3 Teflon spectrometer Aerosol mass spectrometerOzone monitor Air supply Computer Temperature control Clean air 10 m3 on temperature Hevap also needed Assumes no interactions among organic aerosol species or with inorganics. #12

Einat, Aharonov

433

Last updated 6/13/2011 Chemistry Major III: FORENSIC CHEMISTRY  

E-Print Network (OSTI)

Last updated 6/13/2011 Chemistry Major III: FORENSIC CHEMISTRY Suggested Program of Study FIRST and 3 of the arts. ***Three additional Forensic Sciences courses must be taken: FORS 6238-6239 plus FORS

Vertes, Akos

434

Beryllium Carcinogenesis. I. Inhalation Exposure of Rats to Beryllium Sulfate Aerosol  

Science Journals Connector (OSTI)

...aerosol at a mean atmospheric concentration of...aerosol at a mean atmospheric concentration of...in the drinking water) for 2 weeks...a glass aerosol generator, with an airflow...chamber, distilled water was disseminated...aerosol generation, atmospheric concentration control...

Andrew L. Reeves; Daniel Deitch; and Arthur J. Vorwald

1967-03-01T23:59:59.000Z

435

Improving aerosol distributions below clouds by assimilating satellite-retrieved cloud droplet number  

Science Journals Connector (OSTI)

...remainder of the map to the...distributions for mass, number, composition...such as vertical velocity and aerosol composition...updated aerosol mass for each compound...aerosols in trade wind cumulus observed by...spectrum of updraft velocities and the internally...Starting from aerosol mass (M) and number...

Pablo E. Saide; Gregory R. Carmichael; Scott N. Spak; Patrick Minnis; J. Kirk Ayers

2012-01-01T23:59:59.000Z

436

spectra from size-resolved particle samples col-lected from the Southeastern Aerosol Visibility  

E-Print Network (OSTI)

and acrolein aerosols. We believe that these transformations are due to acid-catalyzed heterogeneous reac

Bishop, James K.B.

437

Calibration of laser ablation inductively coupled plasma mass spectrometry using dried solution aerosols for the quantitative analysis of solid samples  

SciTech Connect

Inductively coupled plasma mass spectrometry (ICP-MS) has become the method of choice for elemental and isotopic analysis. Several factors contribute to its success. Modern instruments are capable of routine analysis at part per trillion levels with relative detection limits in part per quadrillion levels. Sensitivities in these instruments can be as high as 200 million counts per second per part per million with linear dynamic ranges up to eight orders of magnitude. With standards for only a few elements, rapid semiquantitative analysis of over 70 elements in an individual sample can be performed. Less than 20 years after its inception ICP-MS has shown to be applicable to several areas of science. These include geochemistry, the nuclear industry, environmental chemistry, clinical chemistry, the semiconductor industry, and forensic chemistry. In this introduction, the general attributes of ICP-MS will be discussed in terms of instrumentation and sample introduction. The advantages and disadvantages of current systems are presented. A detailed description of one method of sample introduction, laser ablation, is given. The paper also gives conclusions and suggestions for future work. Chapter 2, Quantitative analysis of solids by laser ablation inductively coupled plasma mass spectrometry using dried solution aerosols for calibration, has been removed for separate processing.

Leach, J.

1999-02-12T23:59:59.000Z

438

Review of Chemistry of Sustainable Energy  

Science Journals Connector (OSTI)

Review of Chemistry of Sustainable Energy ... Green synthesis methods are being researched, so this sustainability problem may not always remain an issue. ...

Cherie Turner

2014-11-20T23:59:59.000Z

439

Nanostructured photocatalysts for green chemistry and sustainable...  

NLE Websites -- All DOE Office Websites (Extended Search)

Nanostructured photocatalysts for green chemistry and sustainable catalysis Nanoscale materials with precise structure and composition offer unique opportunities in the development...

440

Symposium on high temperature and materials chemistry  

SciTech Connect

This volume contains the written proceedings of the Symposium on High Temperature and Materials Chemistry held in Berkeley, California on October 24--25, 1989. The Symposium was sponsored by the Materials and Chemical Sciences Division of Lawrence Berkeley Laboratory and by the College of Chemistry of the University of California at Berkeley to discuss directions, trends, and accomplishments in the field of high temperature and materials chemistry. Its purpose was to provide a snapshot of high temperature and materials chemistry and, in so doing, to define status and directions.

Not Available

1989-10-01T23:59:59.000Z

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441

Phase-Transfer Catalysis in Analytical Chemistry  

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In analytical chemistry, analytes must sometimes be reacted with derivatizing reagents to facilitate analysis. Derivatization is needed when the analytes, without modification, cannot be easily separated using...

Charles M. Starks; Charles L. Liotta; Marc E. Halpern

1994-01-01T23:59:59.000Z

442

Chemistry of Cobalt-Platinum Nanocatalysts  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry of Cobalt-Platinum Nanocatalysts Print Bimetallic cobalt-platinum (CoPt) nanoparticles are drawing attention in many areas of catalysis as scientists attempt to reduce...

443

Characteristics and Effects of Lubricant Additive Chemistry...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Characteristics and Effects of Lubricant Additive Chemistry and Exhaust Conditions on Diesel Particulate Filter Service Life and Vehicle Fuel Economy A Consortium to Optimize...

444

Cetane Performance and Chemistry Comparing Conventional Fuels...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Cetane Performance and Chemistry Comparing Conventional Fuels and Fuels Derived from Heavy Crude Sources Bruce Bunting, Sam Lewis, John Storey OAK RIDGE NATIONAL LABORATORY U. S....

445

Chemistry: Theory - Combustion Energy Frontier Research Center  

NLE Websites -- All DOE Office Websites (Extended Search)

Theory Chemistry: Theory Presentations from 2010 CEFRC First Annual Conference MultireferenceCorrelated WavefunctionCalculations and Reaction Flux Analyses of Methyl Ester...

446

Energy & Sustainable Chemistry: Light Harvesting & Biocatalysis...  

NLE Websites -- All DOE Office Websites (Extended Search)

& Sustainable Chemistry: Light Harvesting & Biocatalysis November 30, 1999 at http:www.rle.mit.eduexcitonicswp-contentuploads201408Olsen-efrc-video-highlight-artf.chloro..m...

447

Appendix C Analytical Chemistry Data  

Office of Legacy Management (LM)

Analytical Chemistry Data This page intentionally left blank Contents Section Analytical Data for Deleted Contaminants of Concern ............................................................. C1.O Mol~tezuma Creek Hardness Dat Surface Water Copper Data Summa ................ CI-9 Surface Water Radium-228 Dat Surface Water Radon-222 Data Summary ....................... ....................................... . . . . . . . . . . . C l - I 2 Alluvial Ground Water Aln~noniuu~ as Nitrogen Data Summary ....................... . . . ................................ Cl-15 Alluvial Ground Water Cobalt Data Summary ........... Alluvial Ground Water Copper Data Sumrl Alluvial Ground Water Lead Data Su~nmary ................................. C1-19 Alluvial Ground Water Lead-210 Data Sutl~rnary

448

THE ADVANCED CHEMISTRY BASINS PROJECT  

SciTech Connect

In the next decades, oil exploration by majors and independents will increasingly be in remote, inaccessible areas, or in areas where there has been extensive shallow exploration but deeper exploration potential may remain; areas where the collection of data is expensive, difficult, or even impossible, and where the most efficient use of existing data can drive the economics of the target. The ability to read hydrocarbon chemistry in terms of subsurface migration processes by relating it to the evolution of the basin and fluid migration is perhaps the single technological capability that could most improve our ability to explore effectively because it would allow us to use a vast store of existing or easily collected chemical data to determine the major migration pathways in a basin and to determine if there is deep exploration potential. To this end a the DOE funded a joint effort between California Institute of Technology, Cornell University, and GeoGroup Inc. to assemble a representative set of maturity and maturation kinetic models and develop an advanced basin model able to predict the chemistry of hydrocarbons in a basin from this input data. The four year project is now completed and has produced set of public domain maturity indicator and maturation kinetic data set, an oil chemistry and flash calculation tool operable under Excel, and a user friendly, graphically intuitive basin model that uses this data and flash tool, operates on a PC, and simulates hydrocarbon generation and migration and the chemical changes that can occur during migration (such as phase separation and gas washing). The DOE Advanced Chemistry Basin Model includes a number of new methods that represent advances over current technology. The model is built around the concept of handling arbitrarily detailed chemical composition of fluids in a robust finite-element 2-D grid. There are three themes on which the model focuses: chemical kinetic and equilibrium reaction parameters, chemical phase equilibrium, and physical flow through porous media. The chemical kinetic scheme includes thermal indicators including vitrinite, sterane ratios, hopane ratios, and diamonoids; and a user-modifiable reaction network for primary and secondary maturation. Also provided is a database of type-specific kerogen maturation schemes. The phase equilibrium scheme includes modules for primary and secondary migration, multi-phase equilibrium (flash) calculations, and viscosity predictions.

William Goddard; Peter Meulbroek; Yongchun Tang; Lawrence Cathles III

2004-04-05T23:59:59.000Z

449

Radioactivity, Radiation, and the Chemistry of Nuclear Waste  

Science Journals Connector (OSTI)

Radioactivity, Radiation, and the Chemistry of Nuclear Waste ... A chemistry course for nonmajors, which centers on the chemistry of nuclear waste, has as a prerequisite at least two semesters of general chemistry. ... The final section of the course is devoted to the treatment of nuclear waste by vitrification and applications based on nuclear or radiation chemistry. ...

Nick Zevos

2002-06-01T23:59:59.000Z

450

CHEMISTRY COURSE OFFERINGS, SPRING, 2014 (Updated 12/05/2013)  

E-Print Network (OSTI)

CHEMISTRY COURSE OFFERINGS, SPRING, 2014 (Updated 12/05/2013) CHEM 0001-01 - CHEMICAL FUNDAMENTALS and chemistry of materials. Three lectures, one laboratory, one recitation. Only one of Chemistry 1, 11, or 16, and coordination chemistry, and chemistry of selected elements. Three lectures, one laboratory, one recitation

Kounaves, Samuel P.

451

Chemistry and Biochemistry University of Mississippi Gregory S. Tschumper  

E-Print Network (OSTI)

Chemistry and Biochemistry University of Mississippi Gregory S. Tschumper 3 June 2014 http://quantum.chem.olemiss.edu Introduction to Computational Quantum Chemistry I #12;Chemistry and Biochemistry University of Mississippi chemistry § Convergent quantum chemistry · Basis sets · Methods �Part II § A case

Tchumper, Gregory S.

452

Chemistry and Biochemistry University of Mississippi Gregory S. Tschumper  

E-Print Network (OSTI)

Chemistry and Biochemistry University of Mississippi Gregory S. Tschumper 4 June 2014 http://quantum.chem.olemiss.edu Introduction to Computational Quantum Chemistry II #12;Chemistry and Biochemistry University of Mississippi chemistry § Convergent quantum chemistry · Basis sets · Methods �Part II § A case

Tchumper, Gregory S.

453

CHEMISTRY COURSE OFFERINGS, SPRING, 2015 (updated Oct.28, 2014 )  

E-Print Network (OSTI)

CHEMISTRY COURSE OFFERINGS, SPRING, 2015 (updated Oct.28, 2014 ) CHEM 0001 - CHEMICAL FUNDAMENTALS and chemistry of materials. Three lectures, one laboratory, one recitation. Only one of Chemistry 1, 11, or 16, and coordination chemistry, and chemistry of selected elements. Three lectures, one laboratory, one recitation

Kounaves, Samuel P.

454

Rev. 3/1/10 NEW.........Minor in Chemistry  

E-Print Network (OSTI)

Rev. 3/1/10 NEW.........Minor in Chemistry The Department of Chemistry offers a minor in chemistry to students who wish to enhance their degrees with a strong concentration in this area. The Chemistry minor and enhances the records of students. The Chemistry minor provides a broad and general exposure

Chatterjee, Avik P.

455

CHEMISTRY 1 Faculty of Natural Sciences, Department of  

E-Print Network (OSTI)

CHEMISTRY 1 Faculty of Natural Sciences, Department of --Chemistry This publication refers.imperial.ac.uk/pgprospectus. Chemistry Interests in chemistry at Imperial College cover physical, organic, inorganic, analytical, polymer and biological chemistry and chemical crystallography, as well as intersectional and medical topics

456

CHEMISTRY COURSE OFFERINGS, FALL, 2013 (Updated 8/1/13)  

E-Print Network (OSTI)

CHEMISTRY COURSE OFFERINGS, FALL, 2013 (Updated 8/1/13) CHEM 0001-01 & 0001-02 - CHEMICAL and chemistry of materials. Three lectures, one laboratory, one recitation. Only one of Chemistry 1, 11, or 16, and coordination chemistry, and chemistry of selected elements. Three lectures, one laboratory, one recitation

Kounaves, Samuel P.

457

Hyperspectral Aerosol Optical Depths from TCAP Flights  

SciTech Connect

4STAR (Spectrometer for Sky-Scanning, Sun-Tracking Atmospheric Research), the world’s first hyperspectral airborne tracking sunphotometer, acquired aerosol optical depths (AOD) at 1 Hz during all July 2012 flights of the Two Column Aerosol Project (TCAP). Root-mean square differences from AERONET ground-based observations were 0.01 at wavelengths between 500-1020 nm, 0.02 at 380 and 1640 nm and 0.03 at 440 nm in four clear-sky fly-over events, and similar in ground side-by-side comparisons. Changes in the above-aircraft AOD across 3-km-deep spirals were typically consistent with integrals of coincident in situ (on DOE Gulfstream 1 with 4STAR) and lidar (on NASA B200) extinction measurements within 0.01, 0.03, 0.01, 0.02, 0.02, 0.02 at 355, 450, 532, 550, 700, 1064 nm, respectively, despite atmospheric variations and combined measurement uncertainties. Finer vertical differentials of the 4STAR measurements matched the in situ ambient extinction profile within 14% for one homogeneous column. For the AOD observed between 350-1660 nm, excluding strong water vapor and oxygen absorption bands, estimated uncertainties were ~0.01 and dominated by (then) unpredictable throughput changes, up to +/-0.8%, of the fiber optic rotary joint. The favorable intercomparisons herald 4STAR’s spatially-resolved high-frequency hyperspectral products as a reliable tool for climate studies and satellite validation.

Shinozuka, Yohei; Johnson, Roy R.; Flynn, Connor J.; Russell, P. B.; Schmid, Beat; Redemann, Jens; Dunagan, Stephen; Kluzek, Celine D.; Hubbe, John M.; Segal-Rosenheimer, Michal; Livingston, J. M.; Eck, T.; Wagener, Richard; Gregory, L.; Chand, Duli; Berg, Larry K.; Rogers, Ray; Ferrare, R. A.; Hair, John; Hostetler, Chris A.; Burton, S. P.

2013-11-13T23:59:59.000Z

458

CARES Helps Explain Secondary Organic Aerosols  

ScienceCinema (OSTI)

What happens when urban man-made pollution mixes with what we think of as pristine forest air? To know more about what this interaction means for the climate, the Carbonaceous Aerosol and Radiative Effects Study, or CARES, field campaign was designed in 2010. The sampling strategy during CARES was coordinated with CalNex 2010, another major field campaign that was planned in California in 2010 by the California Air Resources Board (CARB), the National Oceanic and Atmospheric Administration (NOAA), and the California Energy Commission (CEC). "We found two things. When urban pollution mixes with forest pollutions we get more secondary organic aerosols," said Rahul Zaveri, FCSD scientist and project lead on CARES. "SOAs are thought to be formed primarily from forest emissions but only when they interact with urban emissions. The data is saying that there will be climate cooling over the central California valley because of these interactions." Knowledge gained from detailed analyses of data gathered during the CARES campaign, together with laboratory experiments, is being used to improve existing climate models.

Zaveri, Rahul

2014-06-02T23:59:59.000Z

459

Berkeley Center for Green Chemistry Newsletter First mobile app for green chemistry fosters sustainable manufacturing of  

E-Print Network (OSTI)

Berkeley Center for Green Chemistry Newsletter First mobile app for green chemistry fosters of the environmentally friendly and sustainable principles of green chemistry -- is the topic of a report in the American on doing so for solvents, key ingredients in processes for making medicines. Some traditional processes

Silver, Whendee

460

Quantum Chemistry at Finite Temperature  

E-Print Network (OSTI)

In this article, we present emerging fields of quantum chemistry at finite temperature. We discuss its recent developments on both experimental and theoretical fronts. First, we describe several experimental investigations related to the temperature effects on the structures, electronic spectra, or bond rupture forces for molecules. These include the analysis of the temperature impact on the pathway shifts for the protein unfolding by atomic force microscopy (AFM), the temperature dependence of the absorption spectra of electrons in solvents, and the temperature influence over the intermolecular forces measured by the AFM. On the theoretical side, we review advancements made by the author in the coming fields of quantum chemistry at finite temperature. Starting from the Bloch equation, we have derived the sets of hierarchy equations for the reduced density operators in both canonical and grand canonical ensembles. They provide a law according to which the reduced density operators vary in temperature for the identical and interacting many-body systems. By taking the independent particle approximation, we have solved the equations in the case of a grand canonical ensemble, and obtained an energy eigenequation for the molecular orbitals at finite temperature. The explicit expression for the temperature-dependent Fock operator is also given. They form a mathematical foundation for the examination of the molecular electronic structures and their interplay with finite temperature. Moreover, we clarify the physics concerning the temperature effects on the electronic structures or processes of the molecules, which is crucial for both theoretical understanding and computation. Finally, ....

Liqiang Wei

2006-05-23T23:59:59.000Z

Note: This page contains sample records for the topic "aerosol chemistry imaging" 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

The Two-Column Aerosol Project (TCAP) Science Plan  

SciTech Connect

The Two-Column Aerosol Project (TCAP) field campaign will provide a detailed set of observations with which to (1) perform radiative and cloud condensation nuclei (CCN) closure studies, (2) evaluate a new retrieval algorithm for aerosol optical depth (AOD) in the presence of clouds using passive remote sensing, (3) extend a previously developed technique to investigate aerosol indirect effects, and (4) evaluate the performance of a detailed regional-scale model and a more parameterized global-scale model in simulating particle activation and AOD associated with the aging of anthropogenic aerosols. To meet these science objectives, the Atmospheric Radiation Measurement (ARM) Climate Research Facility will deploy the ARM Mobile Facility (AMF) and the Mobile Aerosol Observing System (MAOS) on Cape Cod, Massachusetts, for a 12-month period starting in the summer of 2012 in order to quantify aerosol properties, radiation, and cloud characteristics at a location subject to both clear and cloudy conditions, and clean and polluted conditions. These observations will be supplemented by two aircraft intensive observation periods (IOPs), one in the summer and a second in the winter. Each IOP will deploy one, and possibly two, aircraft depending on available resources. The first aircraft will be equipped with a suite of in situ instrumentation to provide measurements of aerosol optical properties, particle composition and direct-beam irradiance. The second aircraft will fly directly over the first and use a multi-wavelength high spectral resolution lidar (HSRL) and scanning polarimeter to provide continuous optical and cloud properties in the column below.

Berkowitz, CM; Berg, LK; Cziczo, DJ; Flynn, CJ; Kassianov, EI; Fast, JD; Rasch, PJ; Shilling, JE; Zaveri, RA; Zelenyuk, A; Ferrare, RA; Hostetler, CA; Cairns, B; Russell, PB; Ervens, B

2011-07-27T23:59:59.000Z

462

Page 1 | B.A. in Chemistry | Academic Plan of Study Updated April 2014 B.A. in Chemistry  

E-Print Network (OSTI)

Page 1 | B.A. in Chemistry | Academic Plan of Study Updated April 2014 B.A. in Chemistry Academic Plan of Study College of Liberal Arts & Sciences Department of Chemistry chemistry.uncc.edu PROGRAM to declare the major. · Advising (For the Major): completed by your chemistry faculty advisor (please refer

Raja, Anita

463

User:Smallman12q/articles/Chemistry 1 User:Smallman12q/articles/Chemistry  

E-Print Network (OSTI)

User:Smallman12q/articles/Chemistry 1 User:Smallman12q/articles/Chemistry Chemistry is the science during chemical reactions. Chemistry is the study of interactions of chemical substances with one another and energy. Chemistry (from Egyptian kme (chem), meaning "earth" [1] ) is the science concerned

Ferreira, Márcia M. C.

464

Minor in Chemistry 1. A Chemistry Minor is achieved by taking courses with a "CHEM" label. Biochemistry ("BCHM")  

E-Print Network (OSTI)

Minor in Chemistry 1. A Chemistry Minor is achieved by taking courses with a "CHEM" label. Biochemistry ("BCHM") courses do not count toward a Chemistry Minor. The following CHEM courses in Chemistry unless you have completed Physical Chemistry 1 (Chem 683) and the accompanying laboratory course

New Hampshire, University of

465

Chemistry -Bachelor of Science (SCH3UG) Total Credits Required: 128 Chemistry/Secondary Education -ACS Certified  

E-Print Network (OSTI)

Chemistry - Bachelor of Science (SCH3UG) Total Credits Required: 128 Chemistry/Secondary Education - 40 credits Course Credits Course Credits CH1150 University Chemistry I AND 3 CH3020 Laboratory Teaching Internship 2 CH1151 University Chemistry Lab 1 AND 1 CH4810 Design/Oper of High School Chemistry

466

Page 1 | B.S. in Chemistry | Academic Plan of Study Updated April 2014 B.S. in Chemistry  

E-Print Network (OSTI)

Page 1 | B.S. in Chemistry | Academic Plan of Study Updated April 2014 B.S. in Chemistry Academic Plan of Study College of Liberal Arts & Sciences Department of Chemistry chemistry.uncc.edu PROGRAM to declare the major. · Advising (For the Major): completed by your chemistry faculty advisor (please refer

Raja, Anita

467

Chemistry -Bachelor of Science (SCH4UG) Total Credits Required: 128 Chemistry/Chemical Physics -ACS Certified  

E-Print Network (OSTI)

Chemistry - Bachelor of Science (SCH4UG) Total Credits Required: 128 Chemistry/Chemical Physics - 49 credits Course Credits Course Credits CH1150 University Chemistry I AND 3 CH4560 Computational Chemistry 3 CH1151 University Chemistry Lab 1 AND 1 PH2300 Univ Physics III - Fluids & Thermo 2 CH1153

468

Research Unit on Biosphere -Aerosol -Cloud -Climate Interactions  

E-Print Network (OSTI)

-222. Seinfeld J., 1986: Atmospheric Chemistry and Physics of Air Pollution. Jonh Wiley and sons. New York, USA that dry deposition and surface exchange processes require a better description in atmospheric chemistry.R. and Lenschow D.H., 1983) in the modelling. Finlayson-Pitts B.J. and Pitts J.N., 1986: Atmospheric Chemistry

469

Chemistry and biology of the polyene macrolide antibiotics.  

Science Journals Connector (OSTI)

...research-article Research Article Chemistry and biology of the polyene macrolide...antibiotics. J M Hamilton-Miller Chemistry and biology of the polyene macrolide...use toxicity Chemical Phenomena Chemistry Drug Resistance, Microbial Models...

J M Hamilton-Miller

1973-06-01T23:59:59.000Z

470

Chemistry and biology of the polyene macrolide antibiotics.  

Science Journals Connector (OSTI)

...research-article Research Article Chemistry and biology of the polyene macrolide...antibiotics. J M Hamilton-Miller Chemistry and biology of the polyene macrolide...drug effects Chemical Phenomena Chemistry Drug Resistance, Microbial Glycosides...

J M Hamilton-Miller

1973-09-01T23:59:59.000Z

471

Chemistry courses as the turning point for premedical students  

E-Print Network (OSTI)

009-9165-3 ORIGINAL PAPER Chemistry courses as the turningnegative experiences in chemistry courses are a major factorTo determine if chemistry courses have a similar effect at a

Barr, Donald A.; Matsui, John; Wanat, Stanley F.; Gonzalez, Maria Elena

2010-01-01T23:59:59.000Z

472

The Chemistry of Cold Interstellar Cloud Cores Eric Herbst  

E-Print Network (OSTI)

Chapter 1 The Chemistry of Cold Interstellar Cloud Cores Eric Herbst Department of Physics and Their Chemistry . . . . . . . . . . . . . 4 1.2 Gas-Phase Chemical Processes . . . . . . . . . . . . . . . . . . . . . . . . . . 13 1.2.4 Organic Chemistry . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 1.2.5 Negative

Millar, Tom

473

ONE FACULTY POSITIONS IN ANALYTICAL, FORENSIC CHEMISTRY OR TOXICOLOGY  

E-Print Network (OSTI)

ONE FACULTY POSITIONS IN ANALYTICAL, FORENSIC CHEMISTRY OR TOXICOLOGY The Department of Chemistry, we seek one outstanding individual to join our recently established Forensic Technology Institute and our FEPAC- accredited Forensics Chemistry Program. A primary focus on forensics research should

Linsley, Braddock K.

474

CH353 Physical Chemistry I Summer 2012  

E-Print Network (OSTI)

CH353 Physical Chemistry I Summer 2012 OUTLINE AND SCHEDULE This course will be team taught by Prof. Robert Wyatt and Lauren Webb Text: P. Atkins and J. de Paula, Physical Chemistry, 9th edition This course-T phase diagrams 2. Sublimation curve, vaporization curve, melting curve, triple point, critical point 3

475

New trends in cometary chemistry Jacques Crovisier  

E-Print Network (OSTI)

New trends in cometary chemistry Jacques Crovisier Received 29th November 2005, Accepted 19th some of the implications of new comet observations for cometary chemistry: recent observations in the coma by the sublimation of nucleus ices. This technique has been in use since the beginnings

Demoulin, Pascal

476

Center for History of Chemistry Inaugurated  

Science Journals Connector (OSTI)

Center for History of Chemistry Inaugurated ... The center already is laying out an active and varied set of programs to discover and disseminate information about chemical historical resources and to encourage research, scholarship, and popular writing about the history of chemistry, chemical engineering, and chemical process industries. ...

RICHARD J. SELTZER

1983-04-04T23:59:59.000Z

477

PHILOSOPHY OF CHEMISTRY Bernadette Bensaude-Vincent  

E-Print Network (OSTI)

PHILOSOPHY OF CHEMISTRY Bernadette Bensaude-Vincent in A. Brenner, J. Gayon eds, French Studies in the Philosophy of Science, Boston Studies in the Philosophy of Science, Springer, 2009, 165-185. The notion of "philosophy of chemistry" challenges the singular in the phrase "philosophy of science", which is the standard

Paris-Sud XI, Université de

478

WoodChemistry Wood Degradation & Preservation  

E-Print Network (OSTI)

31 WoodChemistry Wood Degradation & Preservation Chemical Utilization of Wood Pulp & Paper and carbohydrates is of considerable interest in connection with a number of issues in wood chemistry, such as the reactions taking place during the formation of wood, the natural molecular weight distribution of lignin

Geldenhuys, Jaco

479

CHEMISTRY 324W Fall 2010 ORGANIC LABORATORY  

E-Print Network (OSTI)

1 CHEMISTRY 324W Fall 2010 ORGANIC LABORATORY Lecture: ...................Monday and Friday 2 book for over 10,000 important organic substances. It has a handy cross index and molecular formula.) Advanced Organic Chemistry: Reactions, Mechanisms, and Structure by March (McGraw-Hill) is particularly

Wagner, Diane

480

Summer 2009 Chemistry Olympiad in Cambridge  

E-Print Network (OSTI)

, then head of organic chemistry at the University of Cape Town, but it was at the time of the first electionsSummer 2009 Chemistry Olympiad in Cambridge Protein folding ­ and misfolding about the academic staff in the department, but I looked through the book- let they sent me and I

Keeler, James

Note: This page contains sample records for the topic "aerosol chemistry imaging" from the National Library of EnergyBeta (NLEBeta).
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to obtain the most current and comprehensive results.


481

A Handbook of Physics and Chemistry  

Science Journals Connector (OSTI)

... THE requirements of the new syllabus for the First Examination in physics and chemistry of the Conjoint Board of the Royal Colleges of Physicians and Surgeons have ... view of making the book more useful to students preparing for other elementary examinations in physics and chemistry. ...

1920-08-23T23:59:59.000Z

482

General Chemistry Introduction: Definitions and Measurements  

E-Print Network (OSTI)

Measurements SI Fundamental Units of Measurement Physical Quantity (Dimension) Unit Name Abbreviation MassGeneral Chemistry Introduction: Definitions and Measurements CHM1050_3 *Aspartame ­ NutraSweetTM. 5 transformations and energy associated with those transformations. CHM1050_3 Chemistry: A Definition #12;CHM1050

Zakarian, Armen

483

Chemistry Add-In for Word  

E-Print Network (OSTI)

The Chemistry Add-In for Word is an Open Source program that allows chemists to create, edit and manipulate chemistry (labels and 2D structures) in the Word environment. the on-screen representation is backed by semantic data in Chemical Markup...

Townsend, Joseph A

2011-07-05T23:59:59.000Z

484

A New Aerosol Flow System for Photochemical and Thermal Studies of Tropospheric Aerosols  

SciTech Connect

For studying the formation and photochemical/thermal reactions of aerosols relevant to the troposphere, a unique, high-volume, slow-flow, stainless steel aerosol flow system equipped with 5 UV lamps has been constructed and characterized experimentally. The total flow system length 6 is 8.5 m and includes a 1.2 m section used for mixing, a 6.1 m reaction section and a 1.2 m 7 transition cone at the end. The 45.7 cm diameter results in a smaller surface to volume ratio than is found in many other flow systems and thus reduces the potential contribution from wall reactions. The latter are also reduced by frequent cleaning of the flow tube walls which is made feasible by the ease of disassembly. The flow tube is equipped with ultraviolet lamps for photolysis. This flow system allows continuous sampling under stable conditions, thus increasing the amount of sample available for analysis and permitting a wide variety of analytical techniques to be applied simultaneously. The residence time is of the order of an hour, and sampling ports located along the length of the flow tube allow for time-resolved measurements of aerosol and gas-phase products. The system was characterized using both an inert gas (CO2) and particles (atomized NaNO3). Instruments interfaced directly to this flow system include a NOx analyzer, an ozone analyzer, relative humidity and temperature probes, a scanning mobility particle sizer spectrometer, an aerodynamic particle sizer spectrometer, a gas chromatograph-mass spectrometer, an integrating nephelometer, and a Fourier transform infrared spectrophotometer equipped with a long path (64 m) cell. Particles collected with impactors and filters at the various sampling ports can be analyzed subsequently by a variety of techniques. Formation of secondary organic aerosol from ?-pinene reactions (NOx photooxidation and ozonolysis) are used to demonstrate the capabilities of this new system.

Ezell, Michael J.; Johnson, Stanley N.; Yu, Yong; Perraud, Veronique; Bruns, Emily; Alexander, M. L.; Zelenyuk, Alla; Dabdub, Donald; Finlayson-Pitts, Barbara J.

2010-05-01T23:59:59.000Z

485

George A. Olah, Carbocation and Hydrocarbon Chemistry  

Office of Scientific and Technical Information (OSTI)

George A. Olah, Carbocation and Hydrocarbon Chemistry George A. Olah, Carbocation and Hydrocarbon Chemistry Resources with Additional Information · Patents George A. Olah Courtesy Rand Larson, Morningstar Productions George Olah received the 1994 Nobel Prize in Chemistry "for his contribution to carbocation chemistry" and his 'role in the chemistry of hydrocarbons. In particular, he developed superacids ... that are much stronger than ordinary acids, are non-nucleophilic, and are fluid at low temperatures. In such media ... carbocations are stable and their physical properties ... can be observed, thus allowing details of their structures to be determined. Besides trivalent ions ... Olah demonstrated the existence of higher coordinate carbocations ... . These species do not violate the octet rule, but involve 2-electron 3-center bonding. '1

486

Plastic Bags to Batteries: A Green Chemistry Solution | Argonne...  

NLE Websites -- All DOE Office Websites (Extended Search)

Plastic Bags to Batteries: A Green Chemistry Solution Share Description Plastic bags are the scourge of roadsides, parking lots and landfills. But chemistry comes to the rescue At...

487

Enriched Stable Isotope Materials and Chemistry | ornl.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Enriched Stable Isotope Materials and Chemistry SHARE Enriched Stable Isotope Materials and Chemistry Reductiondistillation of calcium-48 metal valued at over 900,000. An...

488

The Chemistry Magic Show Captivates Kids | GE Global Research  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry Magic Show Captivates Kids The Chemistry Magic Show Captivates Kids Vin Smentkowski 2012.11.16 My colleague, Christopher (Chris) Dosch, also known as Ignito the Magician,...

489

Fuel Chemistry and Cetane Effects on HCCI Performance, Combustion...  

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

Coal-Derived Liquids to Enable HCCI Technology Fuel Chemistry and Cetane Effects on HCCI Performance, Combustion, and Emissions Cetane Performance and Chemistry Comparing...

490

Reductant Chemistry during LNT Regeneration for a Lean Gasoline...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Reductant Chemistry during LNT Regeneration for a Lean Gasoline Engine Reductant Chemistry during LNT Regeneration for a Lean Gasoline Engine Poster presented at the 16th...

491

Chemistry and Material Sciences Applications Training at NERSC...  

NLE Websites -- All DOE Office Websites (Extended Search)

Chemistry and Material Sciences Applications Chemistry and Material Sciences Applications June 26, 2012 Jack Zhengji NERSC Training Event 09:00 - 12:00 PST June 26, 2012...

492

Modeling the Regeneration Chemistry of Lean NOx Traps | Department...  

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

the Regeneration Chemistry of Lean NOx Traps Modeling the Regeneration Chemistry of Lean NOx Traps Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored...

493

Bridging the Gap between Fundamental Physics and Chemistry and...  

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

Bridging the Gap between Fundamental Physics and Chemistry and Applied Models for HCCI Engines Bridging the Gap between Fundamental Physics and Chemistry and Applied Models for...

494

Organic Semiconductor Chemistry | MIT-Harvard Center for Excitonics  

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Organic Semiconductor Chemistry December 13, 2012 at 3pm36-428 Seth Marder Department of ChemistryBiochemistry, Director, Center for Organic Photonics and Electronics, Georgia...

495

Private Company Uses EERE-Supported Chemistry Model to Substantially...  

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

Private Company Uses EERE-Supported Chemistry Model to Substantially Improve Combustion Engine Simulation Software Private Company Uses EERE-Supported Chemistry Model to...

496

Redox Chemistry in Thin Layers of Organometallic Complexes Prepared...  

NLE Websites -- All DOE Office Websites (Extended Search)

Redox Chemistry in Thin Layers of Organometallic Complexes Prepared Using Ion Soft Landing. Redox Chemistry in Thin Layers of Organometallic Complexes Prepared Using Ion Soft...

497

Role of inorganic chemistry on nuclear energy examined  

NLE Websites -- All DOE Office Websites (Extended Search)

Role of inorganic chemistry on nuclear energy examined Inorganic chemistry can provide insight and improve technical issues surrounding nuclear power production and waste...

498

Physical Organic Chemistry of Reactive Intermediates | The Ames...  

NLE Websites -- All DOE Office Websites (Extended Search)

Physical Organic Chemistry of Reactive Intermediates The Jenks group specializes in physical organic chemistry, the "how" of organic reactions. Much of the work has centered on...

499

Tropospheric Chemistry of Internally Mixed Sea Salt and Organic...  

NLE Websites -- All DOE Office Websites (Extended Search)

Tropospheric Chemistry of Internally Mixed Sea Salt and Organic Particles: Surprising Reactivity of NaCl with Weak Organic Acids Tropospheric Chemistry of Internally Mixed Sea Salt...

500

High Level Computational Chemistry Approaches to the Prediction...  

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

High Level Computational Chemistry Approaches to the Prediction of Energetic Properties of Chemical Hydrogen Storage Systems High Level Computational Chemistry Approaches to the...