Science.gov

Sample records for administrative matters electronic

  1. 10 CFR 603.600 - Administrative matters.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 4 2012-01-01 2012-01-01 false Administrative matters. 603.600 Section 603.600 Energy... Affecting Participants' Financial, Property, and Purchasing Systems § 603.600 Administrative matters. This subpart addresses “systemic” administrative matters that place requirements on the operation of...

  2. 10 CFR 603.600 - Administrative matters.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 10 Energy 4 2014-01-01 2014-01-01 false Administrative matters. 603.600 Section 603.600 Energy... Affecting Participants' Financial, Property, and Purchasing Systems § 603.600 Administrative matters. This subpart addresses “systemic” administrative matters that place requirements on the operation of...

  3. 10 CFR 603.600 - Administrative matters.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 4 2011-01-01 2011-01-01 false Administrative matters. 603.600 Section 603.600 Energy... Affecting Participants' Financial, Property, and Purchasing Systems § 603.600 Administrative matters. This subpart addresses “systemic” administrative matters that place requirements on the operation of...

  4. 10 CFR 603.600 - Administrative matters.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 4 2013-01-01 2013-01-01 false Administrative matters. 603.600 Section 603.600 Energy... Affecting Participants' Financial, Property, and Purchasing Systems § 603.600 Administrative matters. This subpart addresses “systemic” administrative matters that place requirements on the operation of...

  5. 10 CFR 603.600 - Administrative matters.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 4 2010-01-01 2010-01-01 false Administrative matters. 603.600 Section 603.600 Energy... Affecting Participants' Financial, Property, and Purchasing Systems § 603.600 Administrative matters. This subpart addresses “systemic” administrative matters that place requirements on the operation of...

  6. 48 CFR 53.204 - Administrative matters.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 2 2014-10-01 2014-10-01 false Administrative matters. 53.204 Section 53.204 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION (CONTINUED) CLAUSES AND FORMS FORMS Prescription of Forms 53.204 Administrative matters....

  7. 48 CFR 53.204 - Administrative matters.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 2 2011-10-01 2011-10-01 false Administrative matters. 53.204 Section 53.204 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION (CONTINUED) CLAUSES AND FORMS FORMS Prescription of Forms 53.204 Administrative matters....

  8. 48 CFR 53.204 - Administrative matters.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 2 2013-10-01 2013-10-01 false Administrative matters. 53.204 Section 53.204 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION (CONTINUED) CLAUSES AND FORMS FORMS Prescription of Forms 53.204 Administrative matters....

  9. 48 CFR 53.204 - Administrative matters.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 2 2010-10-01 2010-10-01 false Administrative matters. 53.204 Section 53.204 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION (CONTINUED) CLAUSES AND FORMS FORMS Prescription of Forms 53.204 Administrative matters....

  10. 48 CFR 53.204 - Administrative matters.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 2 2012-10-01 2012-10-01 false Administrative matters. 53.204 Section 53.204 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION (CONTINUED) CLAUSES AND FORMS FORMS Prescription of Forms 53.204 Administrative matters....

  11. Electron interaction in matter

    NASA Technical Reports Server (NTRS)

    Dance, W. E.; Rainwater, W. J.; Rester, D. H.

    1969-01-01

    Data on the scattering of 1-MeV electrons in aluminum for the case of non-normal incidence, electron-bremsstrahlung cross-sections in thin targets, and the production of bremstrahlung by electron interaction in thick targets, are presented both in tabular and graphic form. These results may interest physicists and radiologists.

  12. Electron Holography: phases matter.

    PubMed

    Lichte, Hannes

    2013-06-01

    Essentially, all optics is wave optics, be it with light, X-rays, neutrons or electrons. The information transfer from the object to the image can only be understood in terms of waves given by amplitude and phase. However, phases are difficult to measure: for slowly oscillating waves such as sound or low-frequency electromagnetic waves, phases can be measured directly; for high frequencies this has to be done by heterodyne detection, i.e. superposition with a reference and averaging over time. In optics, this is called interferometry. Because interference is mostly very difficult to achieve, phases have often been considered 'hidden variables' seemingly pulling the strings from backstage, only visible by their action on the image intensity. This was almost the case in conventional Electron Microscopy with the phase differences introduced by an object. However, in the face of the urgent questions from solid state physics and materials science, these phases have to be determined precisely, because they encode the most dominant object properties, such as charge distributions and electromagnetic fields. After more than six decades of very patient advancement, electron interferometry and holography offer unprecedented analytical facilities down to an atomic scale. Akira Tonomura has prominently contributed to the present state. PMID:23620338

  13. 48 CFR 952.204 - Clauses related to administrative matters.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 5 2011-10-01 2011-10-01 false Clauses related to administrative matters. 952.204 Section 952.204 Federal Acquisition Regulations System DEPARTMENT OF ENERGY... Clauses related to administrative matters....

  14. Academic Administration: Are There Differences That Matter?

    ERIC Educational Resources Information Center

    Fincher, Cameron

    1982-01-01

    The differences between academic administration and business management and the distinctions between academic administration and public administration are addressed. Attention is directed to differences in purpose and internal organization; decisions and conflict resolution; environmental relations and internal affairs; and recruitment, selection,…

  15. Electronic health records: Context matters!

    PubMed

    Ventres, William B; Frankel, Richard M

    2016-06-01

    Comments on the article by Kotay, Huang, Jordan, and Korin (see record 2016-22430-001). They tackle how to document patients' social histories in a way that is useful in real-time clinical practice-and explore the implementation of a new electronic health record (EHR) template specifically built to support their residency practice's commitment to addressing the social dimensions of patients' lives. For all of us convinced that the simultaneous integration of the biological, social, psychological, and existential dimensions of care is key to the practice of primary care, there are many questions to explore in relation to using EHRs. How are we going to do this in an environment that preferentially supports particularized data over an engaged awareness of context? How are we going to convince those with the technological expertise and administrative power that the transmission of information alone is not a substitute for insight, meaning, and relationships (Ventres & Frankel, 2010)? And ultimately, how are we going to make sure the EHR works for us instead of against us? Kotay and her colleagues have not answered all these questions in their study-such a task is beyond the abilities of one person or group of researchers- but along with others they have begun to illuminate a way forward (Cifuentes et al., 2015; Glowa-Kollisch et al., 2014). May we all now strive to continue the work that these authors have started. (PsycINFO Database Record PMID:27270249

  16. 14 CFR 120.111 - Administrative and other matters.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Administrative and other matters. 120.111 Section 120.111 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIR CARRIERS AND OPERATORS FOR COMPENSATION OR HIRE: CERTIFICATION AND OPERATIONS DRUG AND ALCOHOL TESTING PROGRAM Drug Testing...

  17. 75 FR 59102 - Defense Federal Acquisition Regulation Supplement; Part 204, Administrative Matters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-27

    ...; Part 204, Administrative Matters AGENCY: Defense Acquisition Regulations System, Department of Defense.... 0 Therefore 48 CFR part 204 is amended as follows: PART 204--ADMINISTRATIVE MATTERS 0 1....

  18. The passage of fast electrons through matter

    NASA Astrophysics Data System (ADS)

    Sorini, Adam P.

    This work regards the passage of fast electrons through matter, and in particular how electrons scatter and lose energy within a solid. The basic quantum theory of these scattering processes was first considered in the early- to mid-20th century by Bohr, Bethe, Fermi, and others. This work extends our understanding of how a relativistic electron scatters off, and loses energy to, a complex many-body system. The main idea of this work is that it is now possible to calculate, from first-principles, the inelastic losses of relativistic electrons in condensed matter. We present ab initio calculations based on a real-space Green's function approach, implemented in the FEFF8 computer program[1]. Our work focuses on three topics: Relativistic stopping power and associated loss parameters, electron energy loss spectroscopy in high energy transmission electron microscopes, and the inelastic electron scattering mixed dynamic form factor. We calculate, for the first time, ab initio stopping powers and inelastic mean free paths in real materials. The stopping powers are calculated over a broad energy range, from ten eV to above ten MeV. We also present the first ab initio calculations of the "mean excitation energy". We develop a relativistic theory of inelastic electron scattering, based on ab initio calculations of dielectric response, and the generalized Lorenz gauge. Using our relativistic dielectric theory, we calculate the EELS magic angle ratio for boron nitride and for graphite. In these anisotropic materials we find large relativistic corrections to the magic angle for high energy electron microscopes. We also predict and calculate large deviations in the EELS magic angle from the relativistic vacuum predictions in the low energy-loss regime. Finally, we present calculations of mixed dynamic form factor.

  19. Electronic bolus design impacts on administration.

    PubMed

    Hentz, F; Umstätter, C; Gilaverte, S; Prado, O R; Silva, C J A; Monteiro, A L G

    2014-06-01

    Electronic identification of animals has become increasingly important worldwide to improve and ensure traceability. In warm and hot climates, such as Brazil, boluses can have advantages over ear tags as the internal devices reduce the risks of ear tag losses, tissue damage, and lesions on the ear. Electronic boluses, however, are often perceived as having negative characteristics, including reported difficulties of administration in small ruminants. This paper describes the factors associated with bolus design that affect the swallowing of a bolus in sheep. Other factors that might influence bolus swallowing time have also been considered. In addition, the effect of bolus design on its performance was evaluated. A total of 56 Suffolk ewes were used to assess the ease of administration and retention of 3 types of electronic ruminal boluses (mini, 11.5 × 58.0 mm and 21.7 g; small, 14.8 × 48.5 mm and 29.5 g; standard, 19.3 × 69.8 mm and 74.4 g) during a whole productive year, including pregnancy and lamb suckling. Ewe age (5.6 ± 2.3 yr) and weight (85.07 ± 8.2 kg BW) were recorded, as well as time for bolus swallowing. The deglutition of the bolus and any resulting blockages in the esophagus were monitored by visual observations. Retention and readability of the boluses were regularly monitored for d 1, wk 1, mo 1, and every mo until 1 yr. Time for bolus swallowing differed substantially with bolus type and was greater (P < 0.05) for the standard bolus (32.8 ± 6.9 s) when compared to small and mini boluses, which did not differ (8.5 ± 2.0 vs. 9.2 ± 2.7 s; P > 0.05). The bolus o.d. and length were positively correlated with swallowing time (P < 0.01). The ewe weight was negatively correlated with swallowing time (P < 0.05). At 6 mo all electronic boluses showed 100% retention rate, and at 12 mo, bolus retention was 100%, 94.5%, and 100% for mini, small, and standard boluses, respectively (P > 0.05). At 12 mo, all boluses showed 100% readability, except for

  20. Electronic Transcripts--EDI in Academic Administration.

    ERIC Educational Resources Information Center

    Carson, E. W.

    1991-01-01

    Newly developed electronic data interchange (EDI) standards for exchanging academic records between colleges and universities are explained. It is argued that implementation of the new standards in college registrar and admissions offices can improve speed, costs, and accuracy and provide a prototype for a variety of campus business applications.…

  1. 32 CFR 37.600 - Which administrative matters are covered in this subpart?

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... DoD GRANT AND AGREEMENT REGULATIONS TECHNOLOGY INVESTMENT AGREEMENTS Award Terms Affecting Participants' Financial, Property, and Purchasing Systems § 37.600 Which administrative matters are covered in... operation of a participant's financial management, property management, or purchasing system....

  2. 75 FR 30109 - Open Meeting for the Electronic Tax Administration Advisory Committee (ETAAC)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-28

    ... Internal Revenue Service Open Meeting for the Electronic Tax Administration Advisory Committee (ETAAC... Internal Revenue Service established the Electronic Tax Administration Advisory Committee (ETAAC). The... electronic tax administration issues in support of the overriding goal that paperless filing should be...

  3. 78 FR 32306 - Open Meeting for the Electronic Tax Administration Advisory Committee (ETAAC)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-29

    ... Internal Revenue Service Open Meeting for the Electronic Tax Administration Advisory Committee (ETAAC... Electronic Tax Administration Advisory Committee (ETAAC) will be conducted via telephone conference call. The ETAAC will discuss recommendations for electronic tax administration which will be published in...

  4. 75 FR 71188 - Open Meeting for the Electronic Tax Administration Advisory Committee (ETAAC)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-22

    ... Internal Revenue Service Open Meeting for the Electronic Tax Administration Advisory Committee (ETAAC... Internal Revenue Service established the Electronic Tax Administration Advisory Committee (ETAAC). The... electronic tax administration issues in support of the overriding goal that paperless filing should be...

  5. Electronic Scoring of Essays: Does Topic Matter?

    ERIC Educational Resources Information Center

    James, Cindy L.

    2008-01-01

    The scoring of student essays by computer has generated much debate and subsequent research. The majority of the research thus far has focused on validating the automated scoring tools by comparing the electronic scores to human scores of writing or other measures of writing skills, and exploring the predictive validity of the automated scores.…

  6. 14 CFR 120.111 - Administrative and other matters.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... Administrator's representative to examine records required to be kept under this subpart and 49 CFR part 40. The..., or rehabilitation to a third party in accordance with 49 CFR part 40. Except as required by law, this subpart, or 49 CFR part 40, no employer shall release employee information. (d) Refusal to submit...

  7. 14 CFR 120.111 - Administrative and other matters.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... Administrator's representative to examine records required to be kept under this subpart and 49 CFR part 40. The..., or rehabilitation to a third party in accordance with 49 CFR part 40. Except as required by law, this subpart, or 49 CFR part 40, no employer shall release employee information. (d) Refusal to submit...

  8. 14 CFR 120.111 - Administrative and other matters.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... Administrator's representative to examine records required to be kept under this subpart and 49 CFR part 40. The..., or rehabilitation to a third party in accordance with 49 CFR part 40. Except as required by law, this subpart, or 49 CFR part 40, no employer shall release employee information. (d) Refusal to submit...

  9. 14 CFR 120.111 - Administrative and other matters.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... Administrator's representative to examine records required to be kept under this subpart and 49 CFR part 40. The..., or rehabilitation to a third party in accordance with 49 CFR part 40. Except as required by law, this subpart, or 49 CFR part 40, no employer shall release employee information. (d) Refusal to submit...

  10. Leadership Competency Preferences of Student Affairs Administrators: Does Generation Matter?

    ERIC Educational Resources Information Center

    Katherine, Lindsey

    2011-01-01

    The purpose of this study was to identify the leadership competencies and characteristics that are "preferred" by student affairs administrators, and to compare these preferences across generations to determine if there were any differences. The term "preferred" was used to indicate that the study asked respondents to assign a value or a level of…

  11. Morale Matters: Midlevel Administrators and Their Intent To Leave.

    ERIC Educational Resources Information Center

    Johnsrud, Linda K.; Heck, Ronald H.; Rosser, Vicki J.

    2000-01-01

    This paper attempts to define the construct of "morale" empirically and examine it within a broader theory of how organizations affect individuals. It investigates the concept's construct validity by proposing and testing a multilevel structural model to measure the impact of morale on midlevel administrators' intentions to leave their positions.…

  12. How Student Data Matters in Writing Program Administration

    ERIC Educational Resources Information Center

    Cordaro, Danielle A.

    2010-01-01

    The writing program administration literature in rhetoric and composition has long advocated the use of local data to determine the direction each writing program should take. Using a mixed-method design employing a standard survey and in-depth interviews, this dissertation describes how writing programs across institutional and programmatic…

  13. Quantum Electronic Matter in Two Dimensions

    SciTech Connect

    Eisenstein, James

    2015-01-27

    Most often, the electrical properties of a material are described as either "conducting" or "insulating". Copper, everyone knows, is a good conductor. It is the foundation of the electrical infrastructure of the nation. Glass, on the other hand, is an excellent insulator. But do these two words describe all the possibilities? The answer is emphatically no, and the basic subject of the research funded by this grant is aimed at fleshing out a more complete description of the electrical properties of materials. Many people are aware that there are also special materials called superconductors. A superconductor (e.g. aluminum when cooled to very low temperatures) is like a regular conductor except that it conducts electricity with no energy loss at all. Ordinary metals get hot when current flows through them; witness the toaster in your kitchen. In a superconductor something very special is going on: The electrons in the metal don't behave individually as they do in an ordinary conductor. Instead they act collectively. It is this collective aspect that makes superconductors so interesting to physicists. So now we have metals, insulators and superconductors. Is there anything else? We now know the answer is yes. In this research we examine special conducting materials, ones in which the mobile electrons are confined to move on a plane surface (as opposed to motion in all three directions). Examples of such "2D" materials include electrons confined to the interface between two otherwise insulating materials (as in the so-called "semiconductor heterostructures" used here) and the single atomic layer of carbon atoms now known as "graphene". Materials like these are not just museum curiosities; each of the billions of transistors in every smart-phone has a 2D electron system in it. In the work supported by this grant, the focus is on both collective conducting states in semiconductor heterostructures and on the conducting properties of graphene and its few-layer cousins. In

  14. Functional complexity in correlated electron matter

    NASA Astrophysics Data System (ADS)

    Bishop, A. R.

    2002-05-01

    We outline several themes which have now emerged in both organic and inorganic correlated electronic materials: the prevalence of intrinsic complexity realized in the coexistence or competition among broken-symmetry ground states; the origin of landscapes in coupled spin, charge and lattice (orbital) degrees-of-freedom; the importance of co-existing short- and long-range forces; and the importance of multiscale complexity for key material properties, including hierarchies of functional, connected scales, coupled intrinsic inhomogeneities in spin, charge and lattice, consequent intrinsic multiple timescales, and the importance of multifunctional “electro-elastic” materials.

  15. Magnetically guided fast electrons in cylindrically compressed matter.

    PubMed

    Pérez, F; Debayle, A; Honrubia, J; Koenig, M; Batani, D; Baton, S D; Beg, F N; Benedetti, C; Brambrink, E; Chawla, S; Dorchies, F; Fourment, C; Galimberti, M; Gizzi, L A; Gremillet, L; Heathcote, R; Higginson, D P; Hulin, S; Jafer, R; Koester, P; Labate, L; Lancaster, K L; MacKinnon, A J; MacPhee, A G; Nazarov, W; Nicolai, P; Pasley, J; Ramis, R; Richetta, M; Santos, J J; Sgattoni, A; Spindloe, C; Vauzour, B; Vinci, T; Volpe, L

    2011-08-01

    Fast electrons produced by a 10 ps, 160 J laser pulse through laser-compressed plastic cylinders are studied experimentally and numerically in the context of fast ignition. K(α)-emission images reveal a collimated or scattered electron beam depending on the initial density and the compression timing. A numerical transport model shows that implosion-driven electrical resistivity gradients induce strong magnetic fields able to guide the electrons. The good agreement with measured beam sizes provides the first experimental evidence for fast-electron magnetic collimation in laser-compressed matter. PMID:21902333

  16. Basti: Does the equipment and method of administration matter?

    PubMed Central

    Gundeti, Manohar S.; Raut, Ashwinikumar A.; Kamat, Nitin M.

    2013-01-01

    Basti is one of the five procedures of panchakarma in Ayurveda. Classically, it is advocated in the diseases of vata. It is mainly of two types viz. asthapana and anuvasana. According to the classical texts basti administration is done with the help of animal bladder (bastiputaka) and specially prepared metal/wooden nozzle/catheter (bastinetra), the whole assembly is called as bastiyantra. Nowadays, except in some of the Vaidya traditions in Kerala, basti administration is often done using enema-can or douche-set. In the aforesaid classical procedure active pressure is expected to be given on the bastiputaka whereas, in conventionally used enema-can only passive or gravitational force plays a role. This is important in the context of ‘basti danakala or pidanakala i.e. time for basti administration′. PMID:23741155

  17. The coupling of condensed matter excitations to electron probes

    SciTech Connect

    Ritchie, R.H.

    1988-01-01

    Aspects of coupling of a classical electron with bulk and surface excitations in condensed matter have been sketched. Some considerations of a self-energy approach to the complete quantal treatment of this coupling have been given. 19 refs., 3 figs.

  18. Fast-electron transport in cylindrically laser-compressed matter

    NASA Astrophysics Data System (ADS)

    Perez, F.; Koenig, M.; Batani, D.; Baton, S. D.; Beg, F. N.; Benedetti, C.; Brambrink, E.; Chawla, S.; Dorchies, F.; Fourment, C.; Galimberti, M.; Gizzi, L. A.; Heathcote, R.; Higginson, D. P.; Hulin, S.; Jafer, R.; Koester, P.; Labate, L.; Lancaster, K.; Mac Kinnon, A. J.; McPhee, A. G.; Nazarov, W.; Nicolai, P.; Pasley, J.; Ravasio, A.; Richetta, M.; Santos, J. J.; Sgattoni, A.; Spindloe, C.; Vauzour, B.; Volpe, L.

    2009-12-01

    Experimental and theoretical results of relativistic electron transport in cylindrically compressed matter are presented. This experiment, which is a part of the HiPER roadmap, was achieved on the VULCAN laser facility (UK) using four long pulses beams (~4 × 50 J, 1 ns, at 0.53 µm) to compress a hollow plastic cylinder filled with plastic foam of three different densities (0.1, 0.3 and 1 g cm-3). 2D simulations predict a density of 2-5 g cm-3 and a plasma temperature up to 100 eV at maximum compression. A short pulse (10 ps, 160 J) beam generated fast electrons that propagate through the compressed matter by irradiating a nickel foil at an intensity of 5 × 1018 W cm-2. X-ray spectrometer and imagers were implemented in order to estimate the compressed plasma conditions and to infer the hot electron characteristics. Results are discussed and compared with simulations.

  19. 77 FR 70879 - Open Meeting for the Electronic Tax Administration Advisory Committee (ETAAC)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-27

    ... Internal Revenue Service Open Meeting for the Electronic Tax Administration Advisory Committee (ETAAC... Internal Revenue Service established the Electronic Tax Administration Advisory Committee (ETAAC). The primary purpose of ETAAC is to provide an organized public forum for discussion of electronic...

  20. 76 FR 30434 - Open Meeting for the Electronic Tax Administration Advisory Committee (ETAAC)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-25

    ... Internal Revenue Service Open Meeting for the Electronic Tax Administration Advisory Committee (ETAAC... Internal Revenue Service established the Electronic Tax Administration Advisory Committee (ETAAC). The primary purpose of ETAAC is to provide an organized public forum for discussion of electronic...

  1. X-Ray Free Electron Laser Interaction With Matter

    SciTech Connect

    Hau-Riege, S

    2009-05-12

    X-ray free electron lasers (XFELs) will enable studying new areas of laser-matter interaction. We summarize the current understanding of the interaction of XFEL pulses with matter and describe some of the simulation approaches that are used to design experiments on future XFEL sources. Modified versions of these models have been successful in guiding and analyzing experiments performed at the extreme-ultraviolet FEL FLASH at wavelengths of 6 nm and longer. For photon energies of several keV, no XFEL-matter interaction experiments have been performed yet but data is anticipated to become available in the near future, which will allow to test our understanding of the interaction physics in this wavelength regime.

  2. Speaking out on Matters of Public Concern: The Precarious Nature of School Administrator Speech

    ERIC Educational Resources Information Center

    Geisel, Richard T.

    2015-01-01

    The purpose of this paper is to highlight current U.S. Supreme Court precedents regarding public employee speech on matters of public concern, and how those precedents are being applied by lower federal courts to public school administrators. Surveying the current legal landscape reveals a heightened vulnerability for school administrators…

  3. Dating Carbonaceous Matter in Archean Cherts by Electron Paramagnetic Resonance

    PubMed Central

    Bourbin, M.; Derenne, S.; Binet, L.; Le Du, Y.; Westall, F.; Kremer, B.; Gautret, P.

    2013-01-01

    Abstract Ancient geological materials are likely to be contaminated through geological times. Thus, establishing the syngeneity of the organic matter embedded in a mineral matrix is a crucial step in the study of very ancient rocks. This is particularly the case for Archean siliceous sedimentary rocks (cherts), which record the earliest traces of life. We used electron paramagnetic resonance (EPR) for assessing the syngeneity of organic matter in cherts that have a metamorphic grade no higher than greenschist. A correlation between the age of Precambrian samples and the shape of their EPR signal was established and statistically tested. As thermal treatments impact organic matter maturity, the effect of temperature on this syngeneity proxy was studied; cyanobacteria were submitted to cumulative short thermal treatment at high temperatures followed by an analysis of their EPR parameters. The resulting carbonaceous matter showed an evolution similar to that of a thermally treated young chert. Furthermore, the possible effect of metamorphism, which is a longer thermal event at lower temperatures, was ruled out for cherts older than 2 Gyr, based on the study of Silurian cherts of the same age and same precursors but various metamorphic grades. We determined that even the most metamorphosed sample did not exhibit the lineshape of an Archean sample. In the hope of detecting organic contamination in Archean cherts, a “contamination-like” mixture was prepared and studied by EPR. It resulted that the lineshape analysis alone does not allow contamination detection and that it must be performed along with cumulative thermal treatments. Such treatments were applied to three Archean chert samples, making dating of their carbonaceous matter possible. We concluded that EPR is a powerful tool to study primitive organic matter and could be used in further exobiology studies on low-metamorphic grade samples (from Mars for example). Key Words: Kerogen—Sedimentary rocks

  4. Dating carbonaceous matter in archean cherts by electron paramagnetic resonance.

    PubMed

    Bourbin, M; Gourier, D; Derenne, S; Binet, L; Le Du, Y; Westall, F; Kremer, B; Gautret, P

    2013-02-01

    Ancient geological materials are likely to be contaminated through geological times. Thus, establishing the syngeneity of the organic matter embedded in a mineral matrix is a crucial step in the study of very ancient rocks. This is particularly the case for Archean siliceous sedimentary rocks (cherts), which record the earliest traces of life. We used electron paramagnetic resonance (EPR) for assessing the syngeneity of organic matter in cherts that have a metamorphic grade no higher than greenschist. A correlation between the age of Precambrian samples and the shape of their EPR signal was established and statistically tested. As thermal treatments impact organic matter maturity, the effect of temperature on this syngeneity proxy was studied; cyanobacteria were submitted to cumulative short thermal treatment at high temperatures followed by an analysis of their EPR parameters. The resulting carbonaceous matter showed an evolution similar to that of a thermally treated young chert. Furthermore, the possible effect of metamorphism, which is a longer thermal event at lower temperatures, was ruled out for cherts older than 2 Gyr, based on the study of Silurian cherts of the same age and same precursors but various metamorphic grades. We determined that even the most metamorphosed sample did not exhibit the lineshape of an Archean sample. In the hope of detecting organic contamination in Archean cherts, a "contamination-like" mixture was prepared and studied by EPR. It resulted that the lineshape analysis alone does not allow contamination detection and that it must be performed along with cumulative thermal treatments. Such treatments were applied to three Archean chert samples, making dating of their carbonaceous matter possible. We concluded that EPR is a powerful tool to study primitive organic matter and could be used in further exobiology studies on low-metamorphic grade samples (from Mars for example). PMID:23397956

  5. Low-energy electron-induced reactions in condensed matter

    NASA Astrophysics Data System (ADS)

    Arumainayagam, Christopher R.; Lee, Hsiao-Lu; Nelson, Rachel B.; Haines, David R.; Gunawardane, Richard P.

    2010-01-01

    The goal of this review is to discuss post-irradiation analysis of low-energy (≤50 eV) electron-induced processes in nanoscale thin films. Because electron-induced surface reactions in monolayer adsorbates have been extensively reviewed, we will instead focus on low-energy electron-induced reactions in multilayer adsorbates. The latter studies, involving nanoscale thin films, serve to elucidate the pivotal role that the low-energy electron-induced reactions play in high-energy radiation-induced chemical reactions in condensed matter. Although electron-stimulated desorption (ESD) experiments conducted during irradiation have yielded vital information relevant to primary or initial electron-induced processes, we wish to demonstrate in this review that analyzing the products following low-energy electron irradiation can provide new insights into radiation chemistry. This review presents studies of electron-induced reactions in nanoscale films of molecular species such as oxygen, nitrogen trifluoride, water, alkanes, alcohols, aldehydes, ketones, carboxylic acids, nitriles, halocarbons, alkane and phenyl thiols, thiophenes, ferrocene, amino acids, nucleotides, and DNA using post-irradiation techniques such as temperature-programmed desorption (TPD), reflection-absorption infrared spectroscopy (RAIRS), X-ray photoelectron spectroscopy (XPS), high-resolution electron energy loss spectroscopy (HREELS), gel electrophoresis, and microarray fluorescence. Post-irradiation temperature-programmed desorption, in particular, has been shown to be useful in identifying labile radiolysis products as demonstrated by the first identification of methoxymethanol as a reaction product of methanol radiolysis. Results of post-irradiation studies have been used not only to identify radiolysis products, but also to determine the dynamics of electron-induced reactions. For example, studies of the radiolysis yield as a function of incident electron energy have shown that dissociative

  6. Improving Efficiency and Reducing Administrative Burden through Electronic Communication

    PubMed Central

    Cook, Katlyn E; Ludens, Gail M; Ghosh, Amit K; Mundell, William C; Fleming, Kevin C; Majka, Andrew J

    2013-01-01

    Background: The InBox messaging system is an internal, electronic program used at Mayo Clinic, Rochester, MN, to facilitate the sending, receiving, and answering of patient-specific messages and alerts. A standardized InBox was implemented in the Division of General Internal Medicine to decrease the time physicians, physician assistants, and nurse practitioners (clinicians) spend on administrative tasks and to increase efficiency. Methods: Clinicians completed surveys and a preintervention InBox pilot test to determine inefficiencies related to administrative burdens and defects (message entry errors). Results were analyzed using Pareto diagrams, value stream mapping, and root cause analysis to prioritize administrative-burden inefficiencies to develop a new, standardized InBox. Clinicians and allied health staff were the target of this intervention and received standardized InBox training followed by a postintervention pilot test for clinicians. Results: Sixteen of 28 individuals (57%) completed the preintervention survey. Twenty-eight clinicians participated in 2 separate 8-day pilot tests (before and after intervention) for the standardized InBox. The number of InBox defects was substantially reduced from 37 (Pilot 1) to 7 (Pilot 2). Frequent InBox defects decreased from 25% to 10%. More than half of clinicians believed the standardized InBox positively affected their work, and 100% of clinicians reported no negative affect on their work. Conclusions: This project demonstrated the successful implementation of the standardized InBox messaging system. Initial assessments show substantial reduction of InBox entry defects and administrative tasks completed by clinicians. The findings of this project suggest increased clinician and allied health staff efficiency, satisfaction, improved clinician work-life balance, and decreased clinician burden caused by administrative tasks. PMID:23596365

  7. Electron conductivity in warm and hot dense matter

    NASA Astrophysics Data System (ADS)

    Starrett, Charles; Charest, Marc; Feinblum, David; Burrill, Daniel

    2015-11-01

    The electronic conductivity of warm and hot dense matter is investigated by combining the Ziman-Evans approach with the recently developed pseudo-atom molecular dynamics (PAMD) method. PAMD gives an accurate description of the electronic and ionic structure of the plasma. The Ziman-Evans approach to conductivity, which takes the electronic and ionic structures as inputs, has been widely used but with numerous different assumptions on these inputs. Here we present a systematic study of these assumptions by comparing results to gold-standard QMD results that are thought to be accurate but are very expensive to produce. The study reveals that some assumptions yield very inaccurate results and should not be used, while others give consistently reasonable results. Finally, we show that the Thomas-Fermi version of PAMD can also be used to give accurate conductivities very rapidly, taking a few minutes per point on a single processor.

  8. 76 FR 6186 - Applications for Membership on the Electronic Tax Administration Advisory Committee (ETAAC)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-03

    ... Internal Revenue Service Applications for Membership on the Electronic Tax Administration Advisory... membership on the Electronic Tax Administration Advisory Committee (ETAAC). Nominations of qualified... II of the application and include recent examples of specific expertise in e- file security,...

  9. 75 FR 44163 - Antidumping and Countervailing Duty Proceedings: Electronic Filing Procedures; Administrative...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-28

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF COMMERCE... Proceedings: Electronic Filing Procedures; Administrative Protective Order Procedures AGENCY: Import Administration, International Trade Administration, Department of Commerce. ACTION: Proposed Rule; Request...

  10. Beyond Particles: Unparticles in Strongly Correlated Electron Matter

    NASA Astrophysics Data System (ADS)

    Phillips, Philip W.

    2015-07-01

    I am concerned in these lectures with the breakdown of the particle concept in strongly correlated electron matter. I first show that the standard procedure for counting particles, namely Luttinger's theorem, breaks down anytime polelike excitations are replaced by ones that have a divergent self-energy. Such a breakdown obtains in electronic systems whose pole-like excitations do not extend to the edge of the Brillouin zone, as in Fermi arcs in the cuprates. Since any non-trivial infrared dynamics in strongly correlated electron matter must be controlled by a critical fixed point, unparticles are the natural candidate to explain the presence of charged degrees of freedom that have no particle content. The continuous mass formulation of unparticles is recast as an action in anti de Sitter space. Such an action serves as the generating functional for the propagator. This mapping fixes the scaling dimension of the unparticle to be d_U = d/2 + √ {d^2 + 4/2} and ensures that the corresponding propagator has zeros with d the spacetime dimension of the unparticle field. The general dynamical mechanism by which bulk operators, such as the Pauli term, couple to the scaling dimension of the boundary operator and thereby lead to a vanishing of the spectral weight at zero energy is reviewed in the context of unparticles and zeros. The analogue of the BCS gap equations with unparticles indicates that the transition temperature increases as the attractive interaction strength decreases, indicating that unparticles are highly susceptible to a superconducting instability.

  11. Uniform electron gas at warm, dense matter conditions

    NASA Astrophysics Data System (ADS)

    Dutta, Sandipan; Dufty, James

    2013-06-01

    A simple, practical model for computing the equilibrium thermodynamics and structure of the uniform electron gas (jellium) by classical strong-coupling methods is proposed. Conditions addressed are those of interest for recent studies of warm dense matter: solid densities and temperatures from zero to plasma states. An effective pair potential and coupling constant are introduced, incorporating the ideal gas, low density, and weak-coupling quantum limits. The resulting parameter-free, analytic model is illustrated by the calculation of the pair correlation function via strong-coupling classical liquid state theory. The results compare favorably with the first finite-temperature restricted path integral Monte Carlo simulations reported recently.

  12. 76 FR 12793 - Open Meeting for the Electronic Tax Administration Advisory Committee (ETAAC)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-08

    ... Internal Revenue Service Open Meeting for the Electronic Tax Administration Advisory Committee (ETAAC... Internal Revenue Service established the Electronic Tax Administration Advisory Committee (ETAAC).The... electronic tax administration issues in support of the overriding goal that paperless filing should be...

  13. Un-Fermi Liquids: Unparticles in Strongly Correlated Electron Matter

    NASA Astrophysics Data System (ADS)

    Langley, Brandon; Phillips, Philip; Hutasoit, Jimmy

    2014-03-01

    Since any non-trivial infrared dynamics in strongly correlated electron matter must be controlled by a critical fixed point, we argue that the form of the single-particle propagator can be deduced simply by imposing scale invariance. As a consequence, the unparticle picture proposed by Georgi is the natural candidate to describe such dynamics. Unparticle stuff is scale-invariant matter with no particular mass. Scale invariance dictates that the propagator has an algebraic form which can admit zeros and hence is a candidate to explain the ubiquitous pseudogap state of the cuprates. The non-perturbative electronic state formed out of unparticles we refer to as an un-Fermi liquid. We show that the underlying action of the continuous mass formulation of unparticles can be recast as an action in anti de Sitter space which serves as the generating functional for the propagator. We find that this mapping fixes the scaling dimension of the unparticle to be dU = d / 2 +√{d2 + 4 } / 2 and ensures that the corresponding propagator has zeros with d the spacetime dimension of the unparticle field. This work was funded by NSF DMR-1104909, DMR-1005536 and DMR-0820404.

  14. 76 FR 22918 - In the Matter of Certain Handheld Electronic Computing Devices, Related Software, and Components...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-25

    ... COMMISSION In the Matter of Certain Handheld Electronic Computing Devices, Related Software, and Components... States after importation of certain handheld electronic computing devices, related software, and... importation of certain handheld electronic computing devices, related software, and components thereof...

  15. Visible and dark matter genesis and cosmic positron and electron excesses

    SciTech Connect

    Gu Peihong; Sarkar, Utpal; Zhang Xinmin

    2009-10-01

    Dark and baryonic matter contribute comparable energy density to the present universe. The dark matter may also be responsible for the cosmic positron and electron excesses. We connect these phenomena with the Dirac seesaw for neutrino masses. In our model (i) the dark matter relic density is a dark matter asymmetry generated simultaneously with the baryon asymmetry so that we can naturally understand the coincidence between the dark and baryonic matter and (ii) the dark matter mostly decays into the leptons so that its decay can interpret the anomalous cosmic rays with positron and electron excesses.

  16. Preterm white matter brain injury is prevented by early administration of umbilical cord blood cells.

    PubMed

    Li, Jingang; Yawno, Tamara; Sutherland, Amy; Loose, Jan; Nitsos, Ilias; Bischof, Robert; Castillo-Melendez, Margie; McDonald, Courtney A; Wong, Flora Y; Jenkin, Graham; Miller, Suzanne L

    2016-09-01

    Infants born very preterm are at high risk for neurological deficits including cerebral palsy. In this study we assessed the neuroprotective effects of umbilical cord blood cells (UCBCs) and optimal administration timing in a fetal sheep model of preterm brain injury. 50 million allogeneic UCBCs were intravenously administered to fetal sheep (0.7 gestation) at 12h or 5d after acute hypoxia-ischemia (HI) induced by umbilical cord occlusion. The fetal brains were collected at 10d after HI. HI (n=7) was associated with reduced number of oligodendrocytes (Olig2+) and myelin density (CNPase+), and increased density of activated microglia (Iba-1+) in cerebral white matter compared to control fetuses (P<0.05). UCBCs administered at 12h, but not 5d after HI, significantly protected white matter structures and suppressed cerebral inflammation. Activated microglial density showed a correlation with decreasing oligodendrocyte number (P<0.001). HI caused cell death (TUNEL+) in the internal capsule and cell proliferation (Ki-67+) in the subventricular zone compared to control (P<0.05), while UCBCs at 12h or 5d ameliorated these effects. Additionally, UCBCs at 12h induced a significant systemic increase in interleukin-10 at 10d, and reduced oxidative stress (malondialdehyde) following HI (P<0.05). UCBC administration at 12h after HI reduces preterm white matter injury, via anti-inflammatory and antioxidant actions. PMID:27317990

  17. Application of models for exchange of electronic documents in complex administrative services

    NASA Astrophysics Data System (ADS)

    Glavev, Victor

    2015-11-01

    The report presents application of models for exchange of electronic documents between different administrations in government and business sectors. It shows the benefits of implementing electronic exchange of documents between different local offices of one administration in government sector such as a municipality and the way it is useful for implementing complex administrative services.

  18. Application of models for exchange of electronic documents in complex administrative services

    SciTech Connect

    Glavev, Victor

    2015-11-30

    The report presents application of models for exchange of electronic documents between different administrations in government and business sectors. It shows the benefits of implementing electronic exchange of documents between different local offices of one administration in government sector such as a municipality and the way it is useful for implementing complex administrative services.

  19. 21 CFR 10.205 - Electronic media coverage of public administrative proceedings.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... Proceedings; Guideline on Policy and Procedures § 10.205 Electronic media coverage of public administrative... 21 Food and Drugs 1 2014-04-01 2014-04-01 false Electronic media coverage of public administrative proceedings. 10.205 Section 10.205 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND...

  20. 21 CFR 10.205 - Electronic media coverage of public administrative proceedings.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... Proceedings; Guideline on Policy and Procedures § 10.205 Electronic media coverage of public administrative... 21 Food and Drugs 1 2011-04-01 2011-04-01 false Electronic media coverage of public administrative proceedings. 10.205 Section 10.205 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND...

  1. 21 CFR 10.205 - Electronic media coverage of public administrative proceedings.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... Proceedings; Guideline on Policy and Procedures § 10.205 Electronic media coverage of public administrative... 21 Food and Drugs 1 2012-04-01 2012-04-01 false Electronic media coverage of public administrative proceedings. 10.205 Section 10.205 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND...

  2. 21 CFR 10.205 - Electronic media coverage of public administrative proceedings.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... Proceedings; Guideline on Policy and Procedures § 10.205 Electronic media coverage of public administrative... 21 Food and Drugs 1 2013-04-01 2013-04-01 false Electronic media coverage of public administrative proceedings. 10.205 Section 10.205 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND...

  3. 21 CFR 10.205 - Electronic media coverage of public administrative proceedings.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... Proceedings; Guideline on Policy and Procedures § 10.205 Electronic media coverage of public administrative... 21 Food and Drugs 1 2010-04-01 2010-04-01 false Electronic media coverage of public administrative proceedings. 10.205 Section 10.205 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND...

  4. Un-Fermi liquids: Unparticles in strongly correlated electron matter

    NASA Astrophysics Data System (ADS)

    Phillips, Philip W.; Langley, Brandon W.; Hutasoit, Jimmy A.

    2013-09-01

    Since any nontrivial infrared dynamics in strongly correlated electron matter must be controlled by a critical fixed point, we argue that the form of the single-particle propagator can be deduced simply by imposing scale invariance. As a consequence, the unparticle picture proposed by Georgi is the natural candidate to describe such dynamics. Unparticle stuff is scale-invariant matter with no particular mass. Scale invariance dictates that the propagator has an algebraic form which can admit zeros and hence is a candidate to explain the ubiquitous pseudogap state of the cuprates. We refer to the nonperturbative electronic state formed out of unparticles as an un-Fermi liquid. We show that the underlying action of the continuous mass formulation of unparticles can be recast as an action in anti-de Sitter space which serves as the generating functional for the propagator. We find that this mapping fixes the scaling dimension of the unparticle to be dU=d/2+d2+4/2 and ensures that the corresponding propagator has zeros with d the space-time dimension of the unparticle field. Should d=2+1, unparticles acquire the nontrivial phase 2πdU upon interchange. Because dU is noninteger and in general not half integer, clockwise and counterclockwise interchange of unparticles do not lead to the same phase and time-reversal symmetry is broken spontaneously as reported in numerous experiments in the pseudogap phase of the cuprates. The possible relevance of this mechanism to such experiments is discussed. We then formulate the analogous BCS gap using unparticles and find that in contrast to the Fermi-liquid case, the transition temperature increases as the attractive interaction strength decreases, indicating that unparticles are highly susceptible to a superconducting instability.

  5. 21 CFR 10.206 - Procedures for electronic media coverage of agency public administrative proceedings.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... public administrative proceedings. 10.206 Section 10.206 Food and Drugs FOOD AND DRUG ADMINISTRATION... Coverage of Public Administrative Proceedings; Guideline on Policy and Procedures § 10.206 Procedures for electronic media coverage of agency public administrative proceedings. (a) To facilitate the...

  6. 21 CFR 10.206 - Procedures for electronic media coverage of agency public administrative proceedings.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... public administrative proceedings. 10.206 Section 10.206 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL ADMINISTRATIVE PRACTICES AND PROCEDURES Electronic Media Coverage of Public Administrative Proceedings; Guideline on Policy and Procedures § 10.206 Procedures...

  7. 21 CFR 10.206 - Procedures for electronic media coverage of agency public administrative proceedings.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... public administrative proceedings. 10.206 Section 10.206 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL ADMINISTRATIVE PRACTICES AND PROCEDURES Electronic Media Coverage of Public Administrative Proceedings; Guideline on Policy and Procedures § 10.206 Procedures...

  8. 21 CFR 10.206 - Procedures for electronic media coverage of agency public administrative proceedings.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... public administrative proceedings. 10.206 Section 10.206 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL ADMINISTRATIVE PRACTICES AND PROCEDURES Electronic Media Coverage of Public Administrative Proceedings; Guideline on Policy and Procedures § 10.206 Procedures...

  9. 21 CFR 10.206 - Procedures for electronic media coverage of agency public administrative proceedings.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... public administrative proceedings. 10.206 Section 10.206 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL ADMINISTRATIVE PRACTICES AND PROCEDURES Electronic Media Coverage of Public Administrative Proceedings; Guideline on Policy and Procedures § 10.206 Procedures...

  10. 76 FR 64428 - Open Meeting for the Electronic Tax Administration Advisory Committee (ETAAC)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-18

    ... Internal Revenue Service Open Meeting for the Electronic Tax Administration Advisory Committee (ETAAC... Internal Revenue Service established the Electronic Tax Administration Advisory Committee (ETAAC).The primary purpose of ETAAC is to provide an organized public forum for discussion of electronic...

  11. 77 FR 31441 - Open Meeting for the Electronic Tax Administration Advisory Committee (ETAAC)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-25

    ... Internal Revenue Service Open Meeting for the Electronic Tax Administration Advisory Committee (ETAAC... Internal Revenue Service established the Electronic Tax Administration Advisory Committee (ETAAC).The primary purpose of ETAAC is to provide an organized public forum for discussion of electronic...

  12. 75 FR 4631 - Open Season for Membership to the Electronic Tax Administration Advisory Committee (ETAAC)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-28

    ... implementation of the Internal Revenue Service (IRS) strategy for electronic tax administration. The ETAAC... options and best practices), (8) system integrators (technology providers), (9) academic (marketing,...

  13. Optical Response of Warm Dense Matter Using Real-Time Electron Dynamics

    NASA Astrophysics Data System (ADS)

    Baczewski, Andrew; Shulenburger, Luke; Desjarlais, Michael; Magyar, Rudolph

    2014-03-01

    The extreme temperatures and solid-like densities in warm dense matter present a unique challenge for theory, wherein neither conventional models from condensed matter nor plasma physics capture all of the relevant phenomenology. While Kubo-Greenwood DFT calculations have proven capable of reproducing optical properties of WDM, they require a significant number of virtual orbitals to reach convergence due to their perturbative nature. Real-time TDDFT presents a complementary framework with a number of computationally favorable properties, including reduced cost complexity and better scalability, and has been used to reproduce the optical response of finite and ordered extended systems. We will describe the use of Ehrenfest-TDDFT to evolve coupled electron-nuclear dynamics in WDM systems, and the subsequent evaluation of optical response functions from the real-time electron dynamics. The advantages and disadvantages of this approach will be discussed relative to the current state-of-the-art. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy's National Security Administration under contract DE-AC04-94AL85000.

  14. Electron Shuttling Capacity of Solid-Phase Organic Matter in Forest Soils

    NASA Astrophysics Data System (ADS)

    Patel, A.; Zhao, Q.; Yang, Y.

    2015-12-01

    Soil organic matter, as an electron shuttle, plays an important role in regulating the biogeochemical cycles of metals, especially the redox reactions for iron. Microorganisms can reduce soil organic matter under anaerobic conditions, and biotically-reduced soil organic matter can abiotically donate electrons to ferric oxides. Such soil organic matter-mediated electron transport can facilitate the interactions between microorganisms and insoluble terminal electron acceptors, i.e. iron minerals. Most previous studies have been focused on the electron shuttling processes through dissolved soil organic matter, and scant information is available for solid-phase soil organic matter. In this study, we aim to quantify the electron accepting capacity for solid-phase organic matter in soils collected from four different forests in the United States, including Truckee (CA), Little Valley (NV), Howland (ME) and Hart (MI). We used Shewanella oneidensisMR-1 to biotically reduce soil slurries, and then quantified the electrons transferred to solid-phase and solution-phase organic matter by reacting them with Fe(III)-nitrilotriacetic acid (Fe(III)-NTA). The generation of Fe(II) was measured by a ferrozine assay to calculate the electron accepting capacity of soil organic matter. Our preliminary results showed that the Truckee soil organic matter can accept 0.51±0.07 mM e-/mol carbon. We will measure the electron accepting capacity for four different soils and correlate them to the physicochemical properties of soils. Potential results will provide information about the electron accepting capacity of solid-phase soil organic matter and its governing factors, with broad implication on the coupled biogeochemical cycles of carbon and iron.

  15. ASTROPHYSICS. Exclusion of leptophilic dark matter models using XENON100 electronic recoil data.

    PubMed

    2015-08-21

    Laboratory experiments searching for galactic dark matter particles scattering off nuclei have so far not been able to establish a discovery. We use data from the XENON100 experiment to search for dark matter interacting with electrons. With no evidence for a signal above the low background of our experiment, we exclude a variety of representative dark matter models that would induce electronic recoils. For axial-vector couplings to electrons, we exclude cross sections above 6 × 10(-35) cm(2) for particle masses of m(χ) = 2 GeV/c(2). Independent of the dark matter halo, we exclude leptophilic models as an explanation for the long-standing DAMA/LIBRA signal, such as couplings to electrons through axial-vector interactions at a 4.4σ confidence level, mirror dark matter at 3.6σ, and luminous dark matter at 4.6σ. PMID:26293959

  16. Exclusion of leptophilic dark matter models using XENON100 electronic recoil data

    NASA Astrophysics Data System (ADS)

    Collaboration, The XENON; Aprile, E.; Agostini, F.; Alfonsi, M.; Arazi, L.; Arisaka, K.; Arneodo, F.; Auger, M.; Balan, C.; Barrow, P.; Baudis, L.; Bauermeister, B.; Behrens, A.; Brown, A.; Brown, E.; Bruenner, S.; Bruno, G.; Budnik, R.; Bütikofer, L.; Cardoso, J. M. R.; Cervantes, M.; Coderre, D.; Colijn, A. P.; Contreras, H.; Cussonneau, J. P.; Decowski, M. P.; Di Giovanni, A.; Duchovni, E.; Fattori, S.; Ferella, A. D.; Fieguth, A.; Fulgione, W.; Gao, F.; Garbini, M.; Geis, C.; Goetzke, L. W.; Grignon, C.; Gross, E.; Hampel, W.; Itay, R.; Kaether, F.; Kaminsky, B.; Kessler, G.; Kish, A.; Landsman, H.; Lang, R. F.; Le Calloch, M.; Lellouch, D.; Levinson, L.; Levy, C.; Lindemann, S.; Lindner, M.; Lopes, J. A. M.; Lyashenko, A.; Macmullin, S.; Undagoitia, T. Marrodán; Masbou, J.; Massoli, F. V.; Mayani, D.; Fernandez, A. J. Melgarejo; Meng, Y.; Messina, M.; Miguez, B.; Molinario, A.; Morana, G.; Murra, M.; Naganoma, J.; Ni, K.; Oberlack, U.; Orrigo, S. E. A.; Pakarha, P.; Pantic, E.; Persiani, R.; Piastra, F.; Pienaar, J.; Plante, G.; Priel, N.; Rauch, L.; Reichard, S.; Reuter, C.; Rizzo, A.; Rosendahl, S.; dos Santos, J. M. F.; Sartorelli, G.; Schindler, S.; Schreiner, J.; Schumann, M.; Lavina, L. Scotto; Selvi, M.; Shagin, P.; Simgen, H.; Teymourian, A.; Thers, D.; Tiseni, A.; Trinchero, G.; Tunnell, C.; Vitells, O.; Wall, R.; Wang, H.; Weber, M.; Weinheimer, C.

    2015-08-01

    Laboratory experiments searching for galactic dark matter particles scattering off nuclei have so far not been able to establish a discovery. We use data from the XENON100 experiment to search for dark matter interacting with electrons. With no evidence for a signal above the low background of our experiment, we exclude a variety of representative dark matter models that would induce electronic recoils. For axial-vector couplings to electrons, we exclude cross sections above 6 × 10-35 cm2 for particle masses of mχ = 2 GeV/c2. Independent of the dark matter halo, we exclude leptophilic models as an explanation for the long-standing DAMA/LIBRA signal, such as couplings to electrons through axial-vector interactions at a 4.4σ confidence level, mirror dark matter at 3.6σ, and luminous dark matter at 4.6σ.

  17. Detecting electron neutrinos from solar dark matter annihilation by JUNO

    NASA Astrophysics Data System (ADS)

    Guo, Wan-Lei

    2016-01-01

    We explore the electron neutrino signals from light dark matter (DM) annihilation in the Sun for the large liquid scintillator detector JUNO. In terms of the spectrum features of three typical DM annihilation channels χχ → νbar nu, τ+τ-, bbar b, we take two sets of selection conditions to calculate the expected signals and atmospheric neutrino backgrounds based on the Monte Carlo simulation data. Then the JUNO sensitivities to the spin independent DM-nucleon and spin dependent DM-proton cross sections are presented. It is found that the JUNO projected sensitivities are much better than the current spin dependent direct detection experimental limits for the νbar nu and τ+τ- channels. In the spin independent case, the JUNO will give the better sensitivity to the DM-nucleon cross section than the LUX and CDMSlite limits for the νbar nu channel with the DM mass lighter than 6.5 GeV . If the νbar nu or τ+τ- channel is dominant, the future JUNO results are very helpful for us to understand the tension between the DAMA annual modulation signal and other direct detection exclusions.

  18. Final report for the Department of Energy funded cooperative agreement ''Electronic Research Demonstration Project'' [University electronic research administration demonstration project

    SciTech Connect

    Rodman, John

    1998-07-31

    This is the final report for the Department of Energy (DOE) funded cooperative agreement ''Electronic Research Demonstration Project (DE-FC02-92ER35180)'' for the period August 1994-July 1998. The goal of the project, referred to as NewERA, was to demonstrate the use of open standards for electronic commerce to support research administration, otherwise referred to as Electronic Research Administration (ERA). The NewERA demonstration project provided a means to test interagency standards developed within the Federal Grant Electronic Commerce Committee, a group comprised of federal granting agencies. The NewERA program was initiated by DOE. NewERA was comprised of three separate, but related, ERA activities in preaward administration, postaward administration, and secure Internet commerce. The goal of New ERA was to demonstrate an open standard implementation of ERA using electronic data interchange, e-mail and Internet transaction security between grant applicants and DOE, along with t h e other participating agencies.

  19. Condensed-matter physics: Attractive electrons from nanoengineering

    NASA Astrophysics Data System (ADS)

    Kontos, Takis

    2016-07-01

    Electrons repel each other because they are negatively charged. An experiment now confirms a fifty-year-old theory that electrons can also attract one another as a result of repulsion from other electrons. See Letter p.395

  20. Method of wave equations exact solutions in studies of neutrinos and electrons interaction in dense matter

    NASA Astrophysics Data System (ADS)

    Studenikin, A. I.

    2008-04-01

    We present quite a powerful method in investigations of different phenomena that can appear when neutrinos and electrons propagate in background matter. This method implies use of exact solutions of modified Dirac equations that contain the correspondent effective potentials accounting for the matter influence on particles. For several particular cases the exact solutions of modified Dirac and Dirac-Pauli equations for a neutrino and an electron in the background environment of different composition are obtained (the case of magnetized matter is also considered). Neutrino reflection, trapping, neutrino pair creation and annihilation in matter and neutrino energy quantization in a rotating medium are discussed. The neutrino Green functions in matter are also derived. The two recently proposed mechanisms of electromagnetic radiation by a neutrino and an electron in matter (the spin light of neutrino and electron, SLν and SLe) are considered. A possibility to introduce an effective 'matter-induced Lorentz force' acting on a neutrino and an electron is discussed. A new mechanism of electromagnetic radiation that can be emitted by an electron moving in the neutrino background with nonzero gradient of density is predicted.

  1. 75 FR 38118 - In the Matter of Certain Electronic Devices With Image Processing Systems, Components Thereof...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-01

    ... COMMISSION In the Matter of Certain Electronic Devices With Image Processing Systems, Components Thereof, and... importation, and the sale within the United States after importation of certain electronic devices with image... certain electronic devices with image processing systems, components thereof, and associated software...

  2. Electronic Survey Administration: Assessment in the Twenty-First Century

    ERIC Educational Resources Information Center

    Olsen, Danny R.; Wygant, Steven A.; Brown, Bruce L.

    2004-01-01

    Recent advances in electronic data collection have opened broad new possibilities for educational assessment. Potentially significant savings in time, money, and effort make Web-based and e-mail-based surveys more and more attractive as alternatives to mail surveys and face-to-face interviews. Yet, as with any major change, questions and obstacles…

  3. 75 FR 39971 - In the Matter of Certain Electronic Imaging Devices; Notice of Investigation

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-13

    ... From the Federal Register Online via the Government Publishing Office INTERNATIONAL TRADE COMMISSION In the Matter of Certain Electronic Imaging Devices; Notice of Investigation AGENCY: U.S... that information on this matter can be obtained by contacting the Commission's TDD terminal on...

  4. A Student Experiment to Demonstrate the Energy Loss and Straggling of Electrons in Matter.

    ERIC Educational Resources Information Center

    de Bruin, M.; Huijgen, F. W. J.

    1990-01-01

    Described is an introductory experiment that allows students to directly observe and measure the linear energy transfer in matter. Illustrated are the experimental setup including the radioactive source, electronic equipment, and the detector; measurement and calculations; and the results. (CW)

  5. 26 CFR 301.6227(c)-1 - Administrative adjustment request by the tax matters partner on behalf of the partnership.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... beginning prior to October 4, 2001, see § 301.6227(b)-1T contained in 26 CFR part 1, revised April 1, 2001. ... administrative adjustment request. Thus, for example, the tax matters partner may file suit under section 6228(a) if the Internal Revenue Service fails to take timely action on the request. (c) Effective date....

  6. Regionally-specific alterations in myelin proteins in nonhuman primate white matter following prolonged cocaine self-administration

    PubMed Central

    Smith, Hilary R.; Beveridge, Thomas J.R.; Nader, Michael A.; Porrino, Linda J.

    2014-01-01

    Background Neuroimaging studies of cocaine users have demonstrated white matter abnormalities associated with behavioral measures of impulsivity and decision-making deficits. The underlying bases for this dysregulation in white matter structure and function have yet to be determined. The aim of the present studies was to investigate the influence of prolonged cocaine self-administration on the levels of myelin-associated proteins and mRNAs in nonhuman primate white matter. Methods Rhesus monkeys (n=4) self-administered cocaine (0.3 mg/kg/inj, 30 reinforcers per session) for 300 sessions. Control animals (n=4) responded for food. Following the final session monkeys were euthanized and white matter tissue at three brain levels was processed for immunoblotting analysis of proteolipid protein (PLP) and myelin basic protein (MBP), as well as for in situ hybridization histochemical analysis of PLP and MBP mRNAs. Results Both MBP and PLP immunoreactivities in white matter at the level of the precommissural striatum were significantly lower in tissue from monkeys self-administering cocaine as compared to controls. No significant differences were seen for either protein at the levels of the prefrontal cortex or postcommissural striatum. In addition, no differences were observed in expression of mRNA for either protein. Conclusions These preliminary findings, in a nonhuman model of prolonged cocaine self-administration, provide further evidence that compromised myelin may underlie the deficits in white matter integrity described in studies of human cocaine users. PMID:24529965

  7. Administration of a Sigma Receptor Agonist Delays MCAO-Induced Neurodegeneration and White Matter Injury

    PubMed Central

    Leonardo, Christopher C.; Hall, Aaron A.; Collier, Lisa A.; Green, Suzanne M.; Willing, Alison E.; Pennypacker, Keith R.

    2010-01-01

    Many pharmacological treatments for stroke have afforded protection in rodent models but failed to show efficacy in clinical trials. This discrepancy may be due to the lack of long-term functional studies. Previously, delayed administration of the sigma receptor agonist 1,3-di-o-tolylguanidine (DTG) reduced infarct volume after middle cerebral artery occlusion (MCAO) in rats. The present study was conducted to determine whether the protective effects of DTG lead to improvements in behavioral functioning. Rats were subjected to MCAO and administered 7.5, 1.5, or 0.75 mg/kg DTG beginning 24 h post-surgery. Histological outcomes (96 h, 2 weeks, and 5 weeks) were compared with performance on a series of behavioral tests (2 and 4 weeks). Fluoro-Jade staining and immunohistochemistry were used to assess infarct volume and immune cell recruitment. All doses significantly reduced infarct volume and perturbation of striatal white matter tracts at 96 h. These reductions were associated with decreased numbers of CD11b-positive amoeboid microglia/macrophages. Despite short-term efficacy, DTG failed to improve behavioral outcomes or reduce infarct volumes after 96 h. While DTG may prove beneficial as a short-term therapy, these data highlight the importance of long-term functional recovery when evaluating novel therapies to treat stroke. PMID:20563232

  8. Elastic Scattering of Electron Vortex Beams in Magnetic Matter

    NASA Astrophysics Data System (ADS)

    Edström, Alexander; Lubk, Axel; Rusz, Ján

    2016-03-01

    Elastic scattering of electron vortex beams on magnetic materials leads to a weak magnetic contrast due to Zeeman interaction of orbital angular momentum of the beam with magnetic fields in the sample. The magnetic signal manifests itself as a redistribution of intensity in diffraction patterns due to a change of sign of the orbital angular momentum of the electron vortex beam. While in the atomic resolution regime the magnetic signal is most likely under the detection limits of present transmission electron microscopes, for electron probes with high orbital angular momenta, and correspondingly larger spatial extent, its detection is predicted to be feasible.

  9. High Energy Electron Signals from Dark Matter Annihilation in the Sun

    SciTech Connect

    Schuster, Philip; Toro, Natalia; Weiner, Neal; Yavin, Itay; /New York U., CCPP

    2012-04-09

    In this paper we discuss two mechanisms by which high energy electrons resulting from dark matter annihilations in or near the Sun can arrive at the Earth. Specifically, electrons can escape the sun if DM annihilates into long-lived states, or if dark matter scatters inelastically, which would leave a halo of dark matter outside of the sun. Such a localized source of electrons may affect the spectra observed by experiments with narrower fields of view oriented towards the sun, such as ATIC, differently from those with larger fields of view such as Fermi. We suggest a simple test of these possibilities with existing Fermi data that is more sensitive than limits from final state radiation. If observed, such a signal will constitute an unequivocal signature of dark matter.

  10. Electronic Records Administration at the Savannah River Plant

    SciTech Connect

    Hudson, B.J.

    1987-01-01

    The Savannah River Plant (SRP), which is operated by DuPont for the Department of Energy (DOE), is faced with the problem of providing ready access to information. A sitewide information network has been installed implementing electronic mail (ALL-IN-1) and various other office automation features. However, users need access to information contained in manuals, earlier research reports, and technical publications located in the central files. Planning is underway to procure a document and information storage and retrieval system linked to the sitewide information network. The system should provide retrieval of image scans of any document via full text and keyword searching of current and archived documents. Old documents will be input to the system through a high-speed image scanning system and optical disk storage. Optical character recognition (OCR) will be performed on these images and the resulting text stored in a document search and retrieval system. A user will utilize the search system to identify the documents needed, and retrieve either the text only from the search system or the image scan from the optical storage system.

  11. 75 FR 4583 - In the Matter of: Certain Electronic Devices, Including Mobile Phones, Portable Music Players...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-28

    ... COMMISSION In the Matter of: Certain Electronic Devices, Including Mobile Phones, Portable Music Players, and... electronic devices, including mobile phones, portable music players, and computers, by reason of infringement... mobile phones, portable music players, or computers that infringe one or more of claims 1-12 of...

  12. High Energy Cosmic Electrons: Messengers from Nearby Cosmic Ray Sources or Dark Matter?

    NASA Technical Reports Server (NTRS)

    Moiseev, Alexander

    2011-01-01

    This slide presentation reviews the recent discoveries by the Large Area Telescope (LAT) and the Gamma-ray Burst Monitor (GBM) on board the Fermi Gamma-Ray Telescope in reference to high energy cosmic electrons, and whether their source is cosmic rays or dark matter. Specific interest is devoted to Cosmic Ray electrons anisotropy,

  13. 76 FR 16462 - In the Matter of Heli Electronics Corp., Order of Suspension of Trading

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-23

    ... From the Federal Register Online via the Government Publishing Office SECURITIES AND EXCHANGE COMMISSION In the Matter of Heli Electronics Corp., Order of Suspension of Trading March 21, 2011. It appears... concerning the securities of Heli Electronics Corp. (``HELI''), a Nevada corporation with headquarters...

  14. PRODUCTION OF HYDRATED ELECTRONS FROM PHOTOIONIZATION OF DISSOLVED ORGANIC MATTER IN NATURAL WATERS

    EPA Science Inventory

    Under UV irradiation, an important primary photochemical reaction of colored dissolved organic matter (CDOM) is electron ejection, producing hydrated electrons (e-aq). The efficiency of this process has been studied in both fresh and seawater samples with both steady-state scave...

  15. Linking the gaseous and the condensed phases of matter: The slow electron and its interactions

    SciTech Connect

    Christophorou, L.G.

    1993-12-31

    The interfacing of the gaseous and the condensed phases of matter as effected by interphase and cluster studies on the behavior of key reactions involving slow electrons either as reacting initial particles or as products of the reactions themselves is discussed. Emphasis is placed on the measurement of both the cross sections and the energetics involved, although most of the available information to date is on the latter. The discussion is selectively focussed on electron scattering (especially the role of negative ion states in gases, clusters, and dense matter), ionization, electron attachment and photodetachment. The dominant role of the electric polarization of the medium is emphasized.

  16. Propagation in compressed matter of hot electrons created by short intense lasers

    NASA Astrophysics Data System (ADS)

    Batani, D.; Bernardinello, A.; Masella, V.; Pisani, F.; Koenig, M.; Krishnan, J.; Benuzzi, A.; Ellwi, S.; Hall, T.; Norreys, P.; Djaoui, A.; Neely, D.; Rose, S.; Fews, P.; Key, M.

    1998-02-01

    We performed the first experimental study of propagation in compressed matter of hot electrons created by a short pulse intense laser. The experiment has been carried out with the VULCAN laser at Rutherford compressing plastic targets with two ns laser beams at an intensity ⩾1014W/cm2. A CPA beam with an intensity ⩾1016W/cm2 irradiated the rear side of the target and created hot electrons propagating through the compressed matter. K-α emission was used as diagnostics of hot electron penetration by putting a chloride plastic layer inside the target.

  17. Final report of the independent counsel for Iran/Contra matters. Volume 2: Indictments, plea agreements, interim reports to the congress, and administrative matters

    SciTech Connect

    Walsh, L.E.

    1993-08-04

    In October and November 1986, two secret U.S. Government operations were publicly exposed, potentially implicating Reagan Administration officials in illegal activities. These operations were the provision of assistance to the military activities of the Nicaraguan contra rebels during an October 1984 to October 1986 prohibition on such aid, and the sale of U.S. arms to Iran in contravention of stated U.S. policy and in possible violation of arms-export controls. In late November 1986, Reagan Administration officials announced that some of the proceeds from the sale of U.S. arms to Iran had been diverted to the contras. As a result, Attorney General Edwin Meese III sought the appointment of an independent counsel to investigate and prosecute possible crimes. Volume II contains indictments, plea agreements, interim reports to Congress and administrative matters from that investigation.

  18. The Cold Dark Matter Search test stand warm electronics card

    SciTech Connect

    Hines, Bruce; Hansen, Sten; Huber, Martin; Kiper, Terry; Rau, Wolfgang; Saab, Tarek; Seitz, Dennis; Sundqvist, Kyle; Mandic, Vuk; /Minnesota U.

    2010-11-01

    A card which does the signal processing for four SQUID amplifiers and two charge sensitive channels is described. The card performs the same functions as is presently done with two custom 9U x 280mm Eurocard modules, a commercial multi-channel VME digitizer, a PCI to GPIB interface, a PCI to VME interface and a custom built linear power supply. By integrating these functions onto a single card and using the power over Ethernet standard, the infrastructure requirements for instrumenting a Cold Dark Matter Search (CDMS) detector test stand are significantly reduced.

  19. Natural organic matter as electron acceptor: experimental evidence for its important role in anaerobic respiration

    NASA Astrophysics Data System (ADS)

    Lau, Maximilian Peter; Sander, Michael; Gelbrecht, Jörg; Hupfer, Michael

    2014-05-01

    Microbial respiration is a key driver of element cycling in oxic and anoxic environments. Upon depletion of oxygen as terminal electron acceptor (TEA), a number of anaerobic bacteria can employ alternative TEA for intracellular energy generation. Redox active quinone moieties in dissolved organic matter (DOM) are well known electron acceptors for microbial respiration. However, it remains unclear whether quinones in adsorbed and particulate OM accept electrons in a same way. In our studies we aim to understand the importance of natural organic matter (NOM) as electron acceptors for microbial energy gain and its possible implications for methanogenesis. Using a novel electrochemical approach, mediated electrochemical reduction and -oxidation, we can directly quantify reduced hydroquinone and oxidized quionone moieties in dissolved and particulate NOM samples. In a mesocosm experiment, we rewetted sediment and peat soil and followed electron transfer to the inorganic and organic electron acceptors over time. We found that inorganic and organic electron acceptor pools were depleted over the same timescales. More importantly, we showed that organic, NOM-associated electron accepting moieties represent as much as 21 40% of total TEA inventories. These findings support earlier studies that propose that the reduction of quinone moieties in particulate organic matter competitively suppresses methanogenesis in wetland soils. Our results indicate that electron transfer to organic, particulate TEA in inundated ecosystems has to be accounted for when establishing carbon budgets in and projecting greenhouse gas emissions from these systems.

  20. Electron microscopy of carbonaceous matter in Allende acid residues

    NASA Technical Reports Server (NTRS)

    Lumpkin, G. R.

    1982-01-01

    On the basis of characteristic diffuse ring diffraction patterns, much of the carbonaceous matter in a large suite of Allende acid residues has been identified as a variety of turbostratic carbon. Crystallites of this phase contain randomly stacked sp(2) hybridized carbon layers and diffraction patterns resemble those from carbon black and glassy carbon. Carbynes are probably absent, and are certainly restricted to less than 0.5% of these acid residues. The work of Ott et al. (1981) provides a basis for the possibility that turbostratic carbon is a carrier of noble gases, but an additional component - amorphous carbon - may be necessary to explain the high release temperatures of noble gases as well as the glassy character of many of the carbonaceous particles. Carbynes are considered to be questionable as important carriers of noble gases in the Allende acid residues.

  1. 78 FR 77171 - Proposed Disposal of George H.W. Bush and Clinton Administration Electronic Backup Tapes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-20

    ... Federal Register on June 28, 2013 (78 FR 125, p. 39016), and contains a detailed description of this issue... Clinton Administration Electronic Backup Tapes'' on June 28, 2013, in the Federal Register (78 FR 125) for... RECORDS ADMINISTRATION Proposed Disposal of George H.W. Bush and Clinton Administration Electronic...

  2. Atomic-scale diffractive imaging of sub-cycle electron dynamics in condensed matter

    NASA Astrophysics Data System (ADS)

    Yakovlev, Vladislav S.; Stockman, Mark I.; Krausz, Ferenc; Baum, Peter

    2015-09-01

    For interaction of light with condensed-matter systems, we show with simulations that ultrafast electron and X-ray diffraction can provide a time-dependent record of charge-density maps with sub-cycle and atomic-scale resolutions. Using graphene as an example material, we predict that diffraction can reveal localised atomic-scale origins of optical and electronic phenomena. In particular, we point out nontrivial relations between microscopic electric current and density in undoped graphene.

  3. The electronics and data acquisition system for the PandaX-I dark matter experiment

    NASA Astrophysics Data System (ADS)

    Ren, X.; Chen, X.; Ji, X.; Li, S.; Lei, S.; Liu, J.; Wang, M.; Xiao, M.; Xie, P.; Yan, B.

    2016-04-01

    We describe the electronics and data acquisition system used in the first phase of the PandaX experiment—a 120 kg dual-phase liquid xenon dark matter direct detection experiment in the China Jin-Ping Underground Laboratory. This system utilized 180 channels of commercial flash ADC waveform digitizers. During the entire experimental run, the system has achieved low trigger threshold (<1 keV electron-equivalent energy) and low deadtime data acquisition.

  4. Atomic-scale diffractive imaging of sub-cycle electron dynamics in condensed matter

    PubMed Central

    Yakovlev, Vladislav S.; Stockman, Mark I.; Krausz, Ferenc; Baum, Peter

    2015-01-01

    For interaction of light with condensed-matter systems, we show with simulations that ultrafast electron and X-ray diffraction can provide a time-dependent record of charge-density maps with sub-cycle and atomic-scale resolutions. Using graphene as an example material, we predict that diffraction can reveal localised atomic-scale origins of optical and electronic phenomena. In particular, we point out nontrivial relations between microscopic electric current and density in undoped graphene. PMID:26412407

  5. Evolution of Medication Administration Workflow in Implementing Electronic Health Record System

    ERIC Educational Resources Information Center

    Huang, Yuan-Han

    2013-01-01

    This study focused on the clinical workflow evolutions when implementing the health information technology (HIT). The study especially emphasized on administrating medication when the electronic health record (EHR) systems were adopted at rural healthcare facilities. Mixed-mode research methods, such as survey, observation, and focus group, were…

  6. 77 FR 1555 - Administrative Simplification: Adoption of Standards for Health Care Electronic Funds Transfers...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-10

    ... regulatory history, see the August 22, 2008 (73 FR 49742) proposed rule entitled ``Health Insurance Reform..., 2000 Federal Register (65 FR 50312), we published a final rule entitled ``Health Insurance Reform... and 162 Administrative Simplification: Adoption of Standards for Health Care Electronic...

  7. Communication: The electronic structure of matter probed with a single femtosecond hard x-ray pulse.

    PubMed

    Szlachetko, J; Milne, C J; Hoszowska, J; Dousse, J-Cl; Błachucki, W; Sà, J; Kayser, Y; Messerschmidt, M; Abela, R; Boutet, S; David, C; Williams, G; Pajek, M; Patterson, B D; Smolentsev, G; van Bokhoven, J A; Nachtegaal, M

    2014-03-01

    Physical, biological, and chemical transformations are initiated by changes in the electronic configuration of the species involved. These electronic changes occur on the timescales of attoseconds (10(-18) s) to femtoseconds (10(-15) s) and drive all subsequent electronic reorganization as the system moves to a new equilibrium or quasi-equilibrium state. The ability to detect the dynamics of these electronic changes is crucial for understanding the potential energy surfaces upon which chemical and biological reactions take place. Here, we report on the determination of the electronic structure of matter using a single self-seeded femtosecond x-ray pulse from the Linac Coherent Light Source hard x-ray free electron laser. By measuring the high energy resolution off-resonant spectrum (HEROS), we were able to obtain information about the electronic density of states with a single femtosecond x-ray pulse. We show that the unoccupied electronic states of the scattering atom may be determined on a shot-to-shot basis and that the measured spectral shape is independent of the large intensity fluctuations of the incoming x-ray beam. Moreover, we demonstrate the chemical sensitivity and single-shot capability and limitations of HEROS, which enables the technique to track the electronic structural dynamics in matter on femtosecond time scales, making it an ideal probe technique for time-resolved X-ray experiments. PMID:26798772

  8. Communication: The electronic structure of matter probed with a single femtosecond hard x-ray pulse

    PubMed Central

    Szlachetko, J.; Milne, C. J.; Hoszowska, J.; Dousse, J.-Cl.; Błachucki, W.; Sà, J.; Kayser, Y.; Messerschmidt, M.; Abela, R.; Boutet, S.; David, C.; Williams, G.; Pajek, M.; Patterson, B. D.; Smolentsev, G.; van Bokhoven, J. A.; Nachtegaal, M.

    2014-01-01

    Physical, biological, and chemical transformations are initiated by changes in the electronic configuration of the species involved. These electronic changes occur on the timescales of attoseconds (10−18 s) to femtoseconds (10−15 s) and drive all subsequent electronic reorganization as the system moves to a new equilibrium or quasi-equilibrium state. The ability to detect the dynamics of these electronic changes is crucial for understanding the potential energy surfaces upon which chemical and biological reactions take place. Here, we report on the determination of the electronic structure of matter using a single self-seeded femtosecond x-ray pulse from the Linac Coherent Light Source hard x-ray free electron laser. By measuring the high energy resolution off-resonant spectrum (HEROS), we were able to obtain information about the electronic density of states with a single femtosecond x-ray pulse. We show that the unoccupied electronic states of the scattering atom may be determined on a shot-to-shot basis and that the measured spectral shape is independent of the large intensity fluctuations of the incoming x-ray beam. Moreover, we demonstrate the chemical sensitivity and single-shot capability and limitations of HEROS, which enables the technique to track the electronic structural dynamics in matter on femtosecond time scales, making it an ideal probe technique for time-resolved X-ray experiments. PMID:26798772

  9. Dark matter vs. astrophysics in the interpretation of AMS-02 electron and positron data

    NASA Astrophysics Data System (ADS)

    Di Mauro, Mattia; Donato, Fiorenza; Fornengo, Nicolao; Vittino, Andrea

    2016-05-01

    We perform a detailed quantitative analysis of the recent AMS-02 electron and positron data. We investigate the interplay between the emission from primary astrophysical sources, namely Supernova Remnants and Pulsar Wind Nebulae, and the contribution from a dark matter annihilation or decay signal. Our aim is to assess the information that can be derived on dark matter properties when both dark matter and primary astrophysical sources are assumed to jointly contribute to the leptonic observables measured by the AMS-02 experiment. We investigate both the possibility to set robust constraints on the dark matter annihilation/decay rate and the possibility to look for dark matter signals within realistic models that take into account the full complexity of the astrophysical background. Our results show that AMS-02 data enable to probe efficiently vast regions of the dark matter parameter space and, in some cases, to set constraints on the dark matter annihilation/decay rate that are comparable or even stronger than the ones derived from other indirect detection channels.

  10. Low energy electron/recoil discrimination for directional Dark Matter detection

    SciTech Connect

    Billard, J.; Mayet, F.; Santos, D. E-mail: mayet@lpsc.in2p3.fr

    2012-07-01

    Directional detection is a promising Dark Matter search strategy. Even though it could accommodate to a sizeable background contamination, electron/recoil discrimination remains a key and challenging issue as for direction-insensitive detectors. The measurement of the 3D track may be used to discriminate electrons from nuclear recoils. While a high rejection power is expected above 20 keV ionization, a dedicated data analysis is needed at low energy. After identifying discriminant observables, a multivariate analysis, namely a Boosted Decision Tree, is proposed, enabling an efficient event tagging for Dark Matter search. We show that it allows us to optimize rejection while keeping a rather high efficiency which is compulsory for rare event search.With respect to a sequential analysis, the rejection is about ∼ 20 times higher with a multivariate analysis, for the same Dark Matter exclusion limit.

  11. Astrophysical uncertainties in the cosmic ray electron and positron spectrum from annihilating dark matter

    SciTech Connect

    Simet, Melanie; Hooper, Dan E-mail: dhooper@fnal.gov

    2009-08-01

    In recent years, a number of experiments have been conducted with the goal of studying cosmic rays at GeV to TeV energies. This is a particularly interesting regime from the perspective of indirect dark matter detection. To draw reliable conclusions regarding dark matter from cosmic ray measurements, however, it is important to first understand the propagation of cosmic rays through the magnetic and radiation fields of the Milky Way. In this paper, we constrain the characteristics of the cosmic ray electron/positron propagation model through comparison with observational inputs, including recent data from the CREAM experiment, and use these constraints to estimate the corresponding uncertainties in the spectrum of cosmic ray electrons and positrons from dark matter particles annihilating in the halo of the Milky Way.

  12. CALET investigation of the origin of cosmic-ray electrons and search for dark matter

    NASA Astrophysics Data System (ADS)

    Yoshida, Kenji; Torii, Shoji; Kasahara, Katsuaki; Akaike, Yosui; Tamura, Tadahisa; Mori, Masaki; Ioka, Kunihito; Kawanaka, Norita

    The CALorimetric Electron Telescope, CALET, is a new all-sky gamma-ray and electron obser-vatory being developed for the Exposure Facility of Japanese Experiment Module (JEM-EF) on the International Space Station (ISS). The main instrument consists of an imaging calorimeter of scintillating fibers, IMC, a total absorption calorimeter of BGO, TASC, and silicon pixel ar-ray, SIA. CALET has a unique capability to observe high-energy electrons in 1GeV -10TeV and gamma rays in 10GeV -several TeV with an energy resolution better than a few percent above 100 GeV, an angular resolution of 0.1deg above 100GeV, and a hadron rejection power larger than 105 . The high precise measurements of electron energy spectrum and arrival directions enable us to detect distinctive features from nearby cosmic-ray electron sources and WIMP dark matter. Excellent energy resolution of CALET, which is much better than Fermi-LAT or air Cherenkov telescopes, is also ideal to detect gamma-ray lines in the GeV-TeV region from WIMP dark matter. In this paper, we present scientific prospects of CALET for investigation of the origin of cosmic-ray electrons and dark matter search.

  13. Incorporating electronic-based and computer-based strategies: graduate nursing courses in administration.

    PubMed

    Graveley, E; Fullerton, J T

    1998-04-01

    The use of electronic technology allows faculty to improve their course offerings. Four graduate courses in nursing administration were contemporized to incorporate fundamental computer-based skills that would be expected of graduates in the work setting. Principles of adult learning offered a philosophical foundation that guided course development and revision. Course delivery strategies included computer-assisted instructional modules, e-mail interactive discussion groups, and use of the electronic classroom. Classroom seminar discussions and two-way interactive video conferencing focused on group resolution of problems derived from employment settings and assigned readings. Using these electronic technologies, a variety of courses can be revised to accommodate the learners' needs. PMID:9570421

  14. 42 CFR 405.1804 - Matters not subject to administrative and judicial review under prospective payment.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... review under prospective payment. 405.1804 Section 405.1804 Public Health CENTERS FOR MEDICARE & MEDICAID... administrative and judicial review under prospective payment. Neither administrative nor judicial review is... proportional amount, of any budget neutrality adjustment in the prospective payment rates. (b)...

  15. 76 FR 55944 - In the Matter of Certain Electronic Devices With Image Processing Systems, Components Thereof...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-09

    ... filed by S3 Graphics Co. Ltd. and S3 Graphics Inc. (collectively, ``S3G''). 75 FR 38118 (July 1, 2010... 21, 2005, 70 FR 43251 (July 26, 2005). During this period, the subject articles would be entitled to... COMMISSION In the Matter of Certain Electronic Devices With Image Processing Systems, Components Thereof,...

  16. Simulation of interactions of electrons and positrons with matter in MCU-PD code

    SciTech Connect

    Kulakov, A. S.

    2011-12-15

    The Monte Carlo method is used in the MCU code-an application package for solving equations of transport of neutrons, photons, electrons, and positrons. The code has a modular structure, and every working version of the code is formed from modules and submodules depending on the problem in question. The submodules BETA and BEG, included in the SOFIZM compound physical module of the MCU-PD code, are described: BETA submodule simulates interaction of electrons and positrons with matter and BEG submodule generates photons in the electron and positron reactions with matter. The library of constants which is involved in the MCUDB50 database and supports execution of the MCU-PD code is briefly characterized.

  17. Superpositions of Free Electron Vortices and Measurement of Matter Wave Gouy Phase

    NASA Astrophysics Data System (ADS)

    McMorran, Benjamin; Harvey, Tyler; Pierce, Jordan; Linck, Martin

    2014-03-01

    We demonstrate superpositions of free electron matter wave orbital states using nanofabricated diffraction holograms. The orbital superposition is comprised of an electron beam that is a coherent mixture of two overlapped, co-propagating vortex beam modes with different topological charge. Whereas a pure mode electron vortex beam forms an annular spot when projected onto an imaging detector, the superposition has an intensity profile that is broken into azimuthal lobes. The number of lobes is given by the absolute difference in topological charge between the two orbital components. We created superpositions of vortices with various topological charges, from ml = 0 to 15. We use these superposition states to measure the Gouy phase measurement for matter waves. We discuss the possibility of using these beams to measure magnetic fields. Support from University of Oregon CAMCOR, and LBNL LDRD grant.

  18. Identification of crystals deposited in brain and kidney after xylitol administration by biochemical, histochemical, and electron diffraction methods.

    PubMed

    Evans, G W; Phillips, G; Mukherjee, T M; Snow, M R; Lawrence, J R; Thomas, D W

    1973-01-01

    The positive identification of crystals of calcium oxalate occurring in brain and kidney after xylitol administration is described. Biochemical, histochemical, conventional light and electron microscopical methods, including selected area electron diffraction, were used to characterize the crystals. PMID:4693896

  19. Identification of crystals deposited in brain and kidney after xylitol administration by biochemical, histochemical, and electron diffraction methods

    PubMed Central

    Evans, G. W.; Phillips, Gael; Mukherjee, T. M.; Snow, M. R.; Lawrence, J. R.; Thomas, D. W.

    1973-01-01

    The positive identification of crystals of calcium oxalate occurring in brain and kidney after xylitol administration is described. Biochemical, histochemical, conventional light and electron microscopical methods, including selected area electron diffraction, were used to characterize the crystals. Images PMID:4693896

  20. Characteristics of warm dense matter produced by a relativistic electron beam

    NASA Astrophysics Data System (ADS)

    Kwan, Thomas; Schmitt, Mark; Berninger, Michael

    2009-11-01

    Accurate equation-of-state theory on warm dense matter is a big challenge to model and good experimental data is difficult to obtain. One of the difficulties is the creation of a warm dense matter (WDM) suitable for experiments to examine its equation of state. We have performed calculations using MCNP and LASNEX to examine the warm dense matter created by a highly energetic electron beam such as the DARHT beam at LANL in a cylindrical sample confined by a collar. Energy deposition by the electron beam in the target and collar of different materials were calculated with different beam profiles. The energy deposition was sourced into LASNEX calculations to examine the dynamic evolution of the target and the generation of radially outward propagating shock waves. Our calculations indicated warm dense matter with a temperature of a few electron volts is achievable and the speed of the shock wave can be determined using photonic Doppler velocimetry technique. We will present results from our calculations for various materials of the target and collar and in different geometries.

  1. 41 CFR 102-118.550 - How does a TSP file an administrative claim using EDI or other electronic means?

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 41 Public Contracts and Property Management 3 2010-07-01 2010-07-01 false How does a TSP file an administrative claim using EDI or other electronic means? 102-118.550 Section 102-118.550 Public Contracts and... EDI or other electronic means? The medium and precise format of data for an administrative claim...

  2. What Knowledge Matters Most to On-the-Job School Administrators in Florida?

    ERIC Educational Resources Information Center

    Mullen, Carol A.

    2005-01-01

    This article is a report of an investigation into what practicing leaders in Florida believe they must know and be capable of in order to effectively perform their role. The focus is relevant to the preparation of principals and to best practices that can advance the profession of educational administration. Reflecting an unusual approach to…

  3. Public Administration: What is It, Why Teach It and Does It Matter?

    ERIC Educational Resources Information Center

    Fenwick, John; McMillan, Janice

    2014-01-01

    What is understood by "public administration" in the contemporary UK higher education setting? Is it still being taught and, if so, why? These questions initially appear to be fairly straightforward but any review of the topic quickly poses some rather more tricky areas of enquiry. This article will focus upon three central questions.…

  4. Solar neutrinos as background in dark matter searches involving electron detection

    NASA Astrophysics Data System (ADS)

    Thomas, A. W.; Vergados, J. D.

    2016-07-01

    In the present work we estimate the potential background of solar neutrinos on electron detectors. These detectors are considered relevant for detecting light dark matter particles in the MeV region, currently sought by experiments. We find that the copious low energy pp neutrinos are a dangerous background at the energies involved in these experiments, in fact close to the anticipated event rate, while the more energetic Boron neutrinos are harmless.

  5. Chronic cocaine administration causes extensive white matter damage in brain: diffusion tensor imaging and immunohistochemistry studies.

    PubMed

    Narayana, Ponnada A; Herrera, Juan J; Bockhorst, Kurt H; Esparza-Coss, Emilio; Xia, Ying; Steinberg, Joel L; Moeller, F Gerard

    2014-03-30

    The effect of chronic cocaine exposure on multiple white matter structures in rodent brain was examined using diffusion tensor imaging (DTI), locomotor behavior, and end point histology. The animals received either cocaine at a dose of 100mg/kg (N=19), or saline (N=17) for 28 days through an implanted osmotic minipump. The animals underwent serial DTI scans, locomotor assessment, and end point histology for determining the expressions of myelin basic protein (MBP), neurofilament-heavy protein (NF-H), proteolipid protein (PLP), Nogo-A, aquaporin-4 (AQP-4), and growth associated protein-43 (GAP-43). Differences in the DTI measures were observed in the splenium (scc) and genu (gcc) of the corpus callosum (cc), fimbria (fi), and the internal capsule (ic). A significant increase in the activity in the fine motor movements and a significant decrease in the number of rearing events were observed in the cocaine-treated animals. Reduced MBP and Nogo-A and increased GAP-43 expressions were most consistently observed in these structures. A decrease in the NF-H expression was observed in fi and ic. The reduced expression of Nogo-A and the increased expression of GAP-43 may suggest destabilization of axonal connectivity and increased neurite growth with aberrant connections. Increased GAP-43 suggests drug-induced plasticity or a possible repair mechanism response. The findings indicated that multiple white matter tracts are affected following chronic cocaine exposure. PMID:24507117

  6. A New Method for Electronic Recoil Calibration in Liquid Noble Dark Matter Detectors

    NASA Astrophysics Data System (ADS)

    Macmullin, Sean

    2014-03-01

    Calibration of next-generation liquid noble dark matter detectors present new challenges because radiation from external sources will not probe the entire target, owing to its large volume and high stopping power. For electronic recoil calibration in particular, a proposed solution is to dissolve a source of low-energy β-electrons directly into the liquid. A particularly promising candidate is 212Pb, a daughter of 220Rn. We have acquired a custom-made source of electrodeposited 228Th that efficiently emanates the desired 220Rn. Details of recent measurements of mixing 220Rn and its daughters in a liquid xenon detector and future prospects will be presented.

  7. Dark matter scattering on electrons: Accurate calculations of atomic excitations and implications for the DAMA signal

    NASA Astrophysics Data System (ADS)

    Roberts, B. M.; Dzuba, V. A.; Flambaum, V. V.; Pospelov, M.; Stadnik, Y. V.

    2016-06-01

    We revisit the WIMP-type dark matter scattering on electrons that results in atomic ionization and can manifest itself in a variety of existing direct-detection experiments. Unlike the WIMP-nucleon scattering, where current experiments probe typical interaction strengths much smaller than the Fermi constant, the scattering on electrons requires a much stronger interaction to be detectable, which in turn requires new light force carriers. We account for such new forces explicitly, by introducing a mediator particle with scalar or vector couplings to dark matter and to electrons. We then perform state-of-the-art numerical calculations of atomic ionization relevant to the existing experiments. Our goals are to consistently take into account the atomic physics aspect of the problem (e.g., the relativistic effects, which can be quite significant) and to scan the parameter space—the dark matter mass, the mediator mass, and the effective coupling strength—to see if there is any part of the parameter space that could potentially explain the DAMA modulation signal. While we find that the modulation fraction of all events with energy deposition above 2 keV in NaI can be quite significant, reaching ˜50 %, the relevant parts of the parameter space are excluded by the XENON10 and XENON100 experiments.

  8. 75 FR 28651 - In the Matter of Certain Electronic Paper Towel Dispensing Devices and Components Thereof; Notice...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-21

    ... COMMISSION In the Matter of Certain Electronic Paper Towel Dispensing Devices and Components Thereof; Notice... the sale within the United States after importation of certain electronic paper towel dispensing... electronic paper towel dispensing devices or components thereof that infringe one or more of claims 1-7 of...

  9. Statins and myocardial infarction: Type, dose, and administration time: Does it matter?

    PubMed

    Papageorgiou, Nikolaos; Zacharia, Effimia; Briasoulis, Alexandros; Androulakis, Emmanuel; Tousoulis, Dimitris

    2016-07-01

    Patients with ST-elevation myocardial infarction (STEMI) constitute a vulnerable group that demands the careful assessment and application of all the up-to-date clinical and experimental knowledge, with final aim, the improvement of their prognosis. Statins are an indispensable part of the primary and secondary prevention of coronary artery disease (CAD), not only due to their strong hypolipidemic effect, but also due to their numerous pleiotropic properties that play an important role in the treatment of CAD, especially when the more vulnerable group of STEMI patients is addressed. Nevertheless, there are still issues that require further discussion and clarification, such as the type of statin, the dose of the regimen, the administration time, and the treatment duration. PMID:26948202

  10. Intranasal administration of aTf protects and repairs the neonatal white matter after a cerebral hypoxic-ischemic event.

    PubMed

    Guardia Clausi, Mariano; Paez, Pablo M; Campagnoni, Anthony T; Pasquini, Laura A; Pasquini, Juana M

    2012-10-01

    Our previous studies showed that the intracerebral injection of apotransferrin (aTf) attenuates white matter damage and accelerates the remyelination process in a neonatal rat model of cerebral hypoxia-ischemia (HI) injury. However, the intracerebral injection of aTf might not be practical for clinical treatments. Therefore, the development of less invasive techniques capable of delivering aTf to the central nervous system would clearly aid in its effective clinical use. In this work, we have determined whether intranasal (iN) administration of human aTf provides neuroprotection to the neonatal mouse brain following a cerebral hypoxic-ischemic event. Apotransferrin was infused into the naris of neonatal mice and the HI insult was induced by right common carotid artery ligation followed by exposure to low oxygen concentration. Our results showed that aTf was successfully delivered into the neonatal HI brain and detected in the olfactory bulb, forebrain and posterior brain 30 min after inhalation. This treatment successfully reduced white matter damage, neuronal loss and astrogliosis in different brain regions and enhanced the proliferation and survival of oligodendroglial progenitor cells (OPCs) in the subventricular zone and corpus callosum (CC). Additionally, using an in vitro hypoxic model, we demonstrated that aTf prevents oligodendrocyte progenitor cell death by promoting their differentiation. In summary, these data suggest that iN administration of aTf has the potential to be used for clinical treatment to protect myelin and to induce remyelination in demyelinating hypoxic-ischemic events in the neonatal brain. PMID:22736466

  11. 75 FR 34484 - In the Matter of: Certain Portable Electronic Devices and Related Software; Notice of Investigation

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-17

    ... From the Federal Register Online via the Government Publishing Office INTERNATIONAL TRADE COMMISSION In the Matter of: Certain Portable Electronic Devices and Related Software; Notice of... 202-205-2000. Hearing impaired individuals are advised that information on this matter can be...

  12. Electronic polymers and soft-matter-like broken symmetries in underdoped cuprates

    PubMed Central

    Capati, M.; Caprara, S.; Di Castro, C.; Grilli, M.; Seibold, G.; Lorenzana, J.

    2015-01-01

    Empirical evidence in heavy fermion, pnictide and other systems suggests that unconventional superconductivity appears associated to some form of real-space electronic order. For the cuprates, despite several proposals, the emergence of order in the phase diagram between the commensurate antiferromagnetic state and the superconducting state is not well understood. Here we show that in this regime doped holes assemble in ‘electronic polymers'. Within a Monte Carlo study, we find that in clean systems by lowering the temperature the polymer melt condenses first in a smectic state and then in a Wigner crystal both with the addition of inversion symmetry breaking. Disorder blurs the positional order leaving a robust inversion symmetry breaking and a nematic order, accompanied by vector chiral spin order and with the persistence of a thermodynamic transition. Such electronic phases, whose properties are reminiscent of soft-matter physics, produce charge and spin responses in good accord with experiments. PMID:26144868

  13. Matter under extreme conditions probed by a seeded free-electron-laser

    NASA Astrophysics Data System (ADS)

    Bencivenga, F.; Principi, E.; Giangrisostomi, E.; Battistoni, A.; Cucini, R.; Danailov, M. B.; Demidovich, A.; Di Cicco, A.; D'Amico, F.; Di Fonzo, S.; Filipponi, A.; Gessini, A.; Gunnella, R.; Hatada, K.; Kurdi, N.; Mahne, N.; Mincigrucci, R.; Raimondi, L.; Svetina, C.; Zangrando, M.; Masciovecchio, C.

    2015-08-01

    FERMI is the first user dedicated seeded free-electron-laser (FEL) working in the extreme ultraviolet (XUV) and soft x-ray range. The EIS-TIMEX experimental end-station was availabe to external users since from the beginning of the user operation of the facility, in Dicember 2012. EIS-TIMEX has been conceived to exploit the unique properties of the FERMI source to study matter under extreme and metastable thermodynamic conditions. We hereby report on its basic parameters and applications, which includes very low jitter (i.e., high time resolution) pump-probe measurements.

  14. Matter under extreme conditions probed by a seeded free-electron-laser

    SciTech Connect

    Bencivenga, F.; Principi, E.; Cucini, R.; Danailov, M. B.; Demidovich, A.; D’Amico, F.; Di Fonzo, S.; Gessini, A.; Kurdi, N.; Mahne, N.; Raimondi, L.; Zangrando, M.; Masciovecchio, C.; Giangrisostomi, E.; Battistoni, A.; Svetina, C.; Di Cicco, A.; Gunnella, R.; Hatada, K.; Filipponi, A.; and others

    2015-08-17

    FERMI is the first user dedicated seeded free-electron-laser (FEL) working in the extreme ultraviolet (XUV) and soft x-ray range. The EIS-TIMEX experimental end-station was availabe to external users since from the beginning of the user operation of the facility, in Dicember 2012. EIS-TIMEX has been conceived to exploit the unique properties of the FERMI source to study matter under extreme and metastable thermodynamic conditions. We hereby report on its basic parameters and applications, which includes very low jitter (i.e., high time resolution) pump-probe measurements.

  15. What matters most for end-of-life care? Perspectives from community-based palliative care providers and administrators

    PubMed Central

    Mistry, Bina; Bainbridge, Daryl; Bryant, Deanna; Tan Toyofuku, Sue; Seow, Hsien

    2015-01-01

    Objectives There has been little research conducted to understand the essential meaning of quality, community-based, end-of-life (EOL) care, despite the expansion of these services. The purpose of this study was to define what matters most for EOL care from the perspective of a diverse range of palliative care providers in the community who have daily encounters with death and dying. Methods We used interviews to explore the perceptions of providers and administrators from 14 specialised palliative care teams in Ontario, Canada. Participants were prompted with the question ‘What matters most for EOL care?’ Responses were analysed using a phenomenological approach to derive themes depicting the universal essence of EOL care. Results Data from 107 respondents were obtained and analysed, from which 40 formulated concepts emerged; these were further grouped into 9 themes. Of the respondents, 39% were nurses, 19% physicians, 27% were supervisors or executives and 15% other. The most predominate concept was that Patient's Wishes are Fulfilled, cited by almost half the respondents. The most prominent themes were Addressing the Non-physical Needs, Healthcare Teams’ Nature of Palliative Care Delivery, Patient Wishes are Honoured, Addressing the Physical Needs, Preparing for and Accepting Death, Communication and Relationship Development, and Involving and Supporting the Family. Conclusions 9 critical domains of EOL care evolved from the interviews, indicating that quality EOL care extends beyond managing physical pain, but includes a holistic perspective of care, a healthcare team dedicated to the EOL journey and a patient-centred pathway. Tailoring the provision of care to consider these important elements plays a critical role in supporting a positive EOL experience for patients and families. PMID:26124510

  16. Free-electron laser measurements of plasmons in warm dense matter

    NASA Astrophysics Data System (ADS)

    Gamboa, Eliseo

    2014-10-01

    Strong plasmon resonances characteristic of electron density fluctuations in warm dense matter (WDM) plasmas have recently been observed for the first time at the Linac Coherent Light Source (LCLS). These experiments record forward scattering from ultrabright 8 keV x-ray pulses to probe dynamically compressed solids driven by shaped ns laser pulses at the Matter in Extreme Conditions (MEC) instrument. From the x-ray scattering spectra we observe well-pronounced plasmon peaks that directly access the electron densities and temperatures. We can access densities >5 g/cm3 and pressures approaching 5 Mbar that are important for planetary and material science as well as inertial confinement fusion research. In this talk we characterize the plasmon loss against wavenumber-resolved x-ray scattering that provides an independent density measurement through shifted Bragg and ion-ion correlation scattering features. We will compare ideal plasma states achieved in heated aluminum with those measured from uncompressed and compressed CVD diamond. The latter shows plasmon energies strongly affected by the band structure up to the highest experimental pressures of several Mbar. This method is presently being applied in numerous experiments to characterize the physical properties of dense plasmas. We will describe the first demonstration of this technique at LCLS, present applications to characterize shocks in dense plasmas, and discuss novel ideas for measuring the properties of high-pressure materials.

  17. Developing Nuclear Magnetic Resonance Force Microscopy (NMRFM) as an Electronic Probe of Nanoscale Condensed Matter Systems

    NASA Astrophysics Data System (ADS)

    Paster, Jeremy W.; Tennant, Daniel M.; Mozaffari, Shirin; Markert, John T.

    2015-03-01

    The investigation of NMR via magnetic force coupling in a large field gradient has led to vast improvements in spatial resolution over the conventional inductive method. It has been demonstrated that nanoscale force sensors could be scaled to distinguish a single nuclear spin, assuming experimental noise can be minimized and other specious force signatures stifled. Accordingly, there are many efforts aimed at repurposing NMR for 3D imaging on the atomic scale. In addition to proof-of-concept experiments aimed at separately resolving some of the eventual experimental barriers to atomic resolution, some of us have directed our attention to using NMR to probe the electronic environment in larger condensed matter systems which are not well suited for other scanning probe microscopy techniques and which are prohibitively small for inductive NMR detection. Previously, we proposed using NMRFM to probe superconducting transitions in microcrystals. In parallel, we revamped our investigation of thin films to explore two-dimensional conducting interfaces between insulating oxides. Presented here is a survey of the technical impediments as well as current strategies for unlocking this exciting potential for NMRFM, as a tool to investigate sub-surface electronic transport in microscale and nanoscale condensed matter systems.

  18. 75 FR 8115 - In the Matter of Certain Electronic Devices Having Image Capture or Display Functionality and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-23

    .... 5,995,767, 5,774,131, and 6,281,895. 74 FR 14157 (2009). The complainant named Eastman Kodak Company... COMMISSION In the Matter of Certain Electronic Devices Having Image Capture or Display Functionality and... sale within the United States after importation of certain electronic devices having image capture...

  19. Use of Electronic Medication Administration Records to Reduce Perceived Stress and Risk of Medication Errors in Nursing Homes.

    PubMed

    Alenius, Malin; Graf, Peter

    2016-07-01

    Concerns have been raised about the effects of current medication administration processes on the safety of many of the aspects of medication administration. Keeping electronic medication administration records could decrease many of these problems. Unfortunately, there has not been much research on this topic, especially in nursing homes. A prospective case-control survey was consequently performed at two nursing homes; the electronic record system was introduced in one, whereas the other continued to use paper records. The personnel were asked to fill in a questionnaire of their perceptions of stress and risk of medication errors at baseline (n = 66) and 20 weeks after the intervention group had started recording medication administration electronically (n = 59). There were statistically significant decreases in the perceived risk of omitting a medication, of medication errors occurring because of communication problems, and of medication errors occurring because of inaccurate medication administration records in the intervention group (all P < .01 vs the control group). The perceived overall daily stress levels were also reduced in the intervention group (P < .05). These results indicate that the utilization of electronic medication administration records will reduce many of the concerns regarding the medication administration process. PMID:27270628

  20. Investigations on the usefulness of the Massively Parallel Processor for study of electronic properties of atomic and condensed matter systems

    NASA Technical Reports Server (NTRS)

    Das, T. P.

    1988-01-01

    The usefulness of the Massively Parallel Processor (MPP) for investigation of electronic structures and hyperfine properties of atomic and condensed matter systems was explored. The major effort was directed towards the preparation of algorithms for parallelization of the computational procedure being used on serial computers for electronic structure calculations in condensed matter systems. Detailed descriptions of investigations and results are reported, including MPP adaptation of self-consistent charge extended Hueckel (SCCEH) procedure, MPP adaptation of the first-principles Hartree-Fock cluster procedure for electronic structures of large molecules and solid state systems, and MPP adaptation of the many-body procedure for atomic systems.

  1. Electron microscopic study of soot particulate matter emissions from aircraft turbine engines.

    PubMed

    Liati, Anthi; Brem, Benjamin T; Durdina, Lukas; Vögtli, Melanie; Dasilva, Yadira Arroyo Rojas; Eggenschwiler, Panayotis Dimopoulos; Wang, Jing

    2014-09-16

    The microscopic characteristics of soot particulate matter (PM) in gas turbine exhaust are critical for an accurate assessment of the potential impacts of the aviation industry on the environment and human health. The morphology and internal structure of soot particles emitted from a CFM 56-7B26/3 turbofan engine were analyzed in an electron microscopic study, down to the nanoscale, for ∼ 100%, ∼ 65%, and ∼ 7% static engine thrust as a proxy for takeoff, cruising, and taxiing, respectively. Sampling was performed directly on transmission electron microscopy (TEM) grids with a state-of-the-art sampling system designed for nonvolatile particulate matter. The electron microscopy results reveal that ∼ 100% thrust produces the highest amount of soot, the highest soot particle volume, and the largest and most crystalline primary soot particles with the lowest oxidative reactivity. The opposite is the case for soot produced during taxiing, where primary soot particles are smallest and most reactive and the soot amount and volume are lowest. The microscopic characteristics of cruising condition soot resemble the ones of the ∼ 100% thrust conditions, but they are more moderate. Real time online measurements of number and mass concentration show also a clear correlation with engine thrust level, comparable with the TEM study. The results of the present work, in particular the small size of primary soot particles present in the exhaust (modes of 24, 20, and 13 nm in diameter for ∼ 100%, ∼ 65% and ∼ 7% engine thrust, respectively) could be a concern for human health and the environment and merit further study. This work further emphasizes the significance of the detailed morphological characteristics of soot for assessing environmental impacts. PMID:25180674

  2. Design and implementation of web-based mobile electronic medication administration record.

    PubMed

    Hsieh, Sung-Huai; Hou, I-Ching; Cheng, Po-Hsun; Tan, Ching-Ting; Shen, Po-Chao; Hsu, Kai-Ping; Hsieh, Sheau-Ling; Lai, Feipei

    2010-10-01

    Patients' safety is the most essential, critical issue, however, errors can hardly prevent, especially for human faults. In order to reduce the errors caused by human, we construct Electronic Health Records (EHR) in the Health Information System (HIS) to facilitate patients' safety and to improve the quality of medical care. During the medical care processing, all the tasks are based upon physicians' orders. In National Taiwan University Hospital (NTUH), the Electronic Health Record committee proposed a standard of order flows. There are objectives of the standard: first, to enhance medical procedures and enforce hospital policies; secondly, to improve the quality of medical care; third, to collect sufficient, adequate data for EHR in the near future. Among the proposed procedures, NTUH decides to establish a web-based mobile electronic medication administration record (ME-MAR) system. The system, build based on the service-oriented architecture (SOA) as well as embedded the HL7/XML standard, is installed in the Mobile Nursing Carts. It also implement accompany with the advanced techniques like Asynchronous JavaScript and XML (Ajax) or Web services to enhance the system usability. According to researches, it indicates that medication errors are highly proportion to total medical faults. Therefore, we expect the ME-MAR system can reduce medication errors. In addition, we evaluate ME-MAR can assist nurses or healthcare practitioners to administer, manage medication properly. This successful experience of developing the NTUH ME-MAR system can be easily applied to other related system. Meanwhile, the SOA architecture of the system can also be seamless integrated to NTUH or other HIS system. PMID:20703613

  3. Direct detection of dark matter via single-electron excitations in semiconductors

    NASA Astrophysics Data System (ADS)

    Essig, Rouven; Fernandez-Serra, Marivi; Mardon, Jeremy; Soto, Adrian; Volansky, Tomer; Yu, Tien-Tien

    Over the last several decades, there has been an enormous experimental effort to search for dark matter (DM). Traditionally, semiconductors have been used to detect DM via scattering with nuclei and the subsequent relaxation of the crystal. However, if DM has mass below order 10 GeV these methods lose detection sensitivity. This is because the DM is lighter than a typical nucleus and, since DM particles move at non-relativistic speeds, they cannot transfer enough energy and momentum to the crystal to produce observable signals. In our work [arXiv:1509.01598], we demonstrate that DM-electron scattering in semiconductors increases the sensitivity of DM detection in this mass regime by several orders of magnitude and is a viable avenue for the direct detection of sub-GeV DM. We use density functional theory (DFT) to calculate the crystal wavefunctions and the band energies, which we correct with an empirical scissor operator. These wavefunctions are used to do perturbation theory, which allows us to calculate the DM-electron scattering rates. In this talk we will focus on the computational and theoretical challenges, discuss future directions and present new expected limits for DM-electron scattering.

  4. [University qualifying work (dissertations), their current registration, electronic access and related technical, administrative and legal questions].

    PubMed

    Spála, M; Bratková, E

    2004-01-01

    Many countries (USA, Australia, Canada, Latin America, Spain, France, SRN) have national or international systems (e.g. Networked Digital Library of Theses and Dissertations--NDLTD), which openly (NDLTD) or commercially (University Microfilm International--UMI) present up to 50% of master dissertations and doctoral theses in a full text form. Such systems are in agreement with legal regulations of the given country and the author is the only holder of the work--of the dissertation. Authors are at the same time informed that dissertation represents a university document, which presents results of the given scientific community and it should be therefore distributed free of charge. Presentation is also the matter of honour of the author and his university. In the contemporary Czech Auctorial Law (No. 121/2000 Sb.) dissertation is considered as not fully defined "Educational work" and from the practical point the duration of necessary storage is not solved. For the contemporary worldwide conversion to electronically presented dissertations, the necessary technical and library standards has been prepared with the first positive experience. The supplement of the Auctorial and University Law appears to be necessary. It is inevitable to be prepared for that situation before the Czech Republic will join EU. PMID:15134043

  5. Using Betatron Emissions from Laser Wakefield Accelerated Electrons to Probe Ultra-fast Warm Dense Matter

    NASA Astrophysics Data System (ADS)

    Kotick, Jordan; Schumaker, Will; Condamine, Florian; Albert, Felicie; Barbrel, Benjamin; Galtier, Eric; Granados, Eduardo; Ravasio, Alessandra; Glenzer, Siegfried

    2015-11-01

    Laser wakefield acceleration (LWFA) has been shown to produce short X-ray pulses from betatron oscillations of electrons within the plasma wake. These betatron X-rays pulses have a broad, synchrotron-like energy spectrum and a duration on the order of the driving laser pulse, thereby enabling probing of ultrafast interactions. Using the 1 J, 40fs short-pulse laser at the Matter in Extreme Conditions experimental station at LCLS, we have implemented LWFA to generate and subsequently characterized betatron X-rays. Notch filtering and single photon counting techniques were used to measure the betatron X-ray spectrum while the spatial profile was measured using X-ray CCDs and image plates. We used an ellipsoidal mirror to focus the soft betatron X-rays for pump-probe studies on various targets in conjunction with LCLS X-ray and optical laser pulses. This experimental platform provides the conditions necessary to do a detailed study of warm-dense matter dynamics on the ultrafast time-scale.

  6. Electron microscopic time-lapse visualization of surface pore filtration on particulate matter trapping process.

    PubMed

    Sanui, Ryoko; Hanamura, Katsunori

    2016-09-01

    A scanning electron microscope (SEM) was used to dynamically visualize the particulate matter (PM) trapping process on diesel particulate filter (DPF) walls at a micro scale as 'time-lapse' images corresponding to the increase in pressure drop simultaneously measured through the DPF. This visualization and pressure drop measurement led to the conclusion that the PM trapping in surface pores was driven by PM bridging and stacking at constricted areas in porous channels. This caused a drastic increase in the pressure drop during PM accumulation at the beginning of the PM trapping process. The relationship between the porous structure of the DPF and the depth of the surface pore was investigated in terms of the porosity distribution and PM penetration depth near the wall surface with respect to depth. The pressure drop calculated with an assumed surface pore depth showed a good correspondence to the measured pressure drop. PMID:26923765

  7. Demonstration of surface electron rejection with interleaved germanium detectors for dark matter searches

    SciTech Connect

    Agnese, R.; Balakishiyeva, D.; Saab, T.; Welliver, B.; Anderson, A. J.; Figueroa-Feliciano, E.; Hertel, S. A.; McCarthy, K. A.; Basu Thakur, R.; Bauer, D. A.; Holmgren, D.; Hsu, L.; Loer, B.; Schmitt, R.; Borgland, A.; Brandt, D.; Brink, P. L.; Do Couto E Silva, E.; Godfrey, G. L.; Hasi, J. [SLAC National Accelerator Laboratory Collaboration: The SuperCDMS Collaboration; and others

    2013-10-14

    The SuperCDMS experiment in the Soudan Underground Laboratory searches for dark matter with a 9-kg array of cryogenic germanium detectors. Symmetric sensors on opposite sides measure both charge and phonons from each particle interaction, providing excellent discrimination between electron and nuclear recoils, and between surface and interior events. Surface event rejection capabilities were tested with two {sup 210}Pb sources producing ∼130 beta decays/hr. In ∼800 live hours, no events leaked into the 8–115 keV signal region, giving upper limit leakage fraction 1.7 × 10{sup −5} at 90% C.L., corresponding to < 0.6 surface event background in the future 200-kg SuperCDMS SNOLAB experiment.

  8. Demonstration of Surface Electron Rejection with Interleaved Germanium Detectors for Dark Matter Searches

    SciTech Connect

    Agnese, R.; Anderson, A. J.; Balakishiyeva, D.; Basu Thakur, R.; Bauer, D. A.; Borgland, A.; Brandt, D.; Brink, P. L.; Bunker, R.; Cabrera, B.; Caldwell, D. O.; Cerdeno, D. G.; Chagani, H.; Cherry, M.; Cooley, J.; Cornell, B.; Crewdson, C. H.; Cushman, Priscilla B.; Daal, M.; Di Stefano, P. C.; Do Couto E Silva, E.; Doughty, T.; Esteban, L.; Fallows, S.; Figueroa-Feliciano, E.; Fox, J.; Fritts, M.; Godfrey, G. L.; Golwala, S. R.; Hall, Jeter C.; Harris, H. R.; Hasi, J.; Hertel, S. A.; Hines, B. A.; Hofer, T.; Holmgren, D.; Hsu, L.; Huber, M. E.; Jastram, A.; Kamaev, O.; Kara, B.; Kelsey, M. H.; Kenany, S.; Kennedy, A.; Kenney, C. J.; Kiveni, M.; Koch, K.; Loer, B.; Lopez Asamar, E.; Mahapatra, R.; Mandic, V.; Martinez, C.; McCarthy, K. A.; Mirabolfathi, N.; Moffatt, R. A.; Moore, D. C.; Nadeau, P.; Nelson, R. H.; Novak, L.; Page, K.; Partridge, R.; Pepin, M.; Phipps, A.; Prasad, K.; Pyle, M.; Qiu, H.; Radpour, R.; Rau, W.; Redl, P.; Reisetter, A.; Resch, R. W.; Ricci, Y.; Saab, T.; Sadoulet, B.; Sander, J.; Schmitt, R.; Schneck, K.; Schnee, Richard; Scorza, S.; Seitz, D.; Serfass, B.; Shank, B.; Speller, D.; Tomada, A.; Villano, A. N.; Welliver, B.; Wright, D. H.; Yellin, S.; Yen, J. J.; Young, B. A.; Zhang, J.

    2013-10-17

    The SuperCDMS experiment in the Soudan Underground Laboratory searches for dark matter with a 9-kg array of cryogenic germanium detectors. Symmetric sensors on opposite sides measure both charge and phonons from each particle interaction, providing excellent discrimination between electron and nuclear recoils, and between surface and interior events. Furthermore, surface event rejection capabilities were tested with two 210Pb sources producing ~130 beta decays/hr. We found that in ~800 live hours, no events leaked into the 8–115 keV signal region, giving upper limit leakage fraction 1.7 x 10-5 at 90% C.L., corresponding to<0.6 surface event background in the future 200-kg SuperCDMS SNOLAB experiment.

  9. Conducting research using the electronic health record across multi-hospital systems: semantic harmonization implications for administrators.

    PubMed

    Bowles, Kathryn H; Potashnik, Sheryl; Ratcliffe, Sarah J; Rosenberg, Melissa; Shih, Nai-Wei; Topaz, Maxim; Holmes, John H; Naylor, Mary D

    2013-06-01

    Administrators play a major role in choosing and managing the use of the electronic health record (EHR). The documentation policies and EHR changes enacted or approved by administrators affect the ability to use clinical data for research. This article illustrates the challenges that can be avoided through awareness of the consequences of customization, variations in documentation policies and quality, and user interface features. Solutions are posed that assist administrators in avoiding these challenges and promoting data harmonization for research and quality improvement. PMID:23708504

  10. Atomic ionization due to dark matter scattering on electrons: Implications for DAMA and XENON interpretation

    NASA Astrophysics Data System (ADS)

    Roberts, Benjamin; Stadnik, Yevgeny; Dzuba, Vladimir; Flambaum, Victor; Gribakin, Gleb; Pospelov, Maxim

    2016-05-01

    Atoms can become ionized during the scattering of a particle off a bound electron. Such interactions involving WIMP dark matter are a potential explanation for the anomalous 9 σ annual modulation in the DAMA direct detection experiment 1. Conventional wisdom has it that the amplitude for such a process should be exponentially small. We show, however, that due to nonanalytic, cusp-like behaviour of Coulomb functions close to the nucleus this suppression is removed, leading to an effective atomic structure enhancement. Crucially, we show that due to this behavior, the electron relativistic effects give the dominant contribution to such a process, enhancing the cross section by orders of magnitude 2. Ab initio relativistic calculations are therefore necessary for the proper analysis of such a problem. Therefore, we perform high-accuracy relativistic calculations of atomic ionization. We scan the parameter space: the DM mass, the mediator mass, and the effective coupling strength, to determine if there is any region that could potentially explain the DAMA signal 3.

  11. Interaction of Single Electron Tunneling and Collective Modes in Quantum Dot Matter

    NASA Astrophysics Data System (ADS)

    Stopa, Michael

    1996-03-01

    We consider arrays of N^d quantum dots in d dimensions coupled by tunnel junctions and we define the limit of N arrow ∞ as ``quantum dot matter'' (QDM). For d=1 QDM we determine the dispersion relation for collective oscillations of the junction charges by ascribing a capacitance to ground and two small internal inductances to each dot. We consider the influence of this electromagnetic environment on single electron tunneling (SET). This differs from the standard treatment (G. -L. Ingold and Yu. V. Nazarov in Single Charge Tunneling), edited by H. Grabert and M. H. Devoret, NATO ASI, Ser. B (Plenum Press, New York, 1992), Chap. 2 where electrons in an array are assumed to be isolated from the environment by the presence of other junctions and tunneling is assumed to be between equilibrium charge states. We compute the junction charge fluctuation <δ Q_k^2> and show that, as in the single junction case, charging effects are suppressed by the environment. Finally, we consider modifications to the ``global rule'' from the finite speed of electromagnetic waves in QDM.

  12. Electronic Contributions to the Equation-of-State of Warm Dense Matter*

    NASA Astrophysics Data System (ADS)

    Albritton, J. R.; Liberman, D. A.; Sonnad, V.; Young, D. A.; Reisman, D. B.; Cauble, R. C.

    2001-10-01

    We describe calculations with the INFERNO[1] atom-in-jellium model to produce single-shock Hugoniot curves for aluminum, copper, and still other elements, from their normal initial density and also from "expanded" states of initial density of about 1/10 normal. These calculations address the regime of "warm-dense-matter", the former in support of experiments toward maximum compression, and the latter in support of experiments toward isentropic compression. INFERNO provides the electronic contributions to the internal energy and pressure, and ideal-gas or QEOS[2] atomic nuclear contributions complete the scheme. We compare INFERNO’s fully quantum-mechanical treatment of electrons with the familiar Thomas-Fermi model. We also investigate the one-component-plasma[3] model for the non-ideal contributions of atomic ions in strongly-coupled plasmas. [1] D.A. Liberman, Phys Rev B, 20, 4981 (1979) [2] R.M. More, K.H. Warren, D.A. Young, and G.B. Zimmerman, Phys Fluids, 31, 3059 (1988) [3] H. DeWitt, W. Slattery, and Gilles Chabrier, Physica B, 228, 21 (1996) *This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract No. W-7405-Eng-48.

  13. How Electron Spectroscopy with Synchrotron Light Can Help Us Understand High-Tc Superconductivity and Other Complex States of Matter

    SciTech Connect

    Campuzano, Juan Carlos

    2012-03-07

    All the physical, chemical, and mechanical properties of materials are controlled by electrons that occupy the highest energy levels in solids, those near the Fermi energy. Many techniques were developed to study those electrons, leading to the great successes of condensed matter physics. Newer and complex materials, such as the high-temperature superconductors, tend to exhibit very large anisotropies in their physical properties, requiring a more detailed knowledge of the behavior of electrons not only as a function of their energy, but also their momentum. Angle-resolved photoemission can contribute to our understanding by providing a great deal of information on many of the momentum-dependent properties of electrons and their interactions. In this talk, I will present a brief overview of how a long-term and focused collaboration between scientists at Argonne and other institutions has contributed to making angle-resolved photoemissions a most useful tool in the study of complex states of matter.

  14. New constraints for low-momentum electronic excitations in condensed matter: fundamental consequences from classical and quantum dielectric theory.

    PubMed

    Chantler, C T; Bourke, J D

    2015-11-18

    We present new constraints for the transportation behaviour of low-momentum electronic excitations in condensed matter systems, and demonstrate that these have both a fundamental physical interpretation and a significant impact on the description of low-energy inelastic electron scattering. The dispersion behaviour and characteristic lifetime properties of plasmon and single-electron excitations are investigated using popular classical, semi-classical and quantum dielectric models. We find that, irrespective of constrained agreement to the well known high-momentum and high-energy Bethe ridge limit, standard descriptions of low-momentum electron excitations are inconsistent and unphysical. These observations have direct impact on calculations of transport properties such as inelastic mean free paths, stopping powers and escape depths of charged particles in condensed matter systems. PMID:26490726

  15. New constraints for low-momentum electronic excitations in condensed matter: fundamental consequences from classical and quantum dielectric theory

    NASA Astrophysics Data System (ADS)

    Chantler, C. T.; Bourke, J. D.

    2015-11-01

    We present new constraints for the transportation behaviour of low-momentum electronic excitations in condensed matter systems, and demonstrate that these have both a fundamental physical interpretation and a significant impact on the description of low-energy inelastic electron scattering. The dispersion behaviour and characteristic lifetime properties of plasmon and single-electron excitations are investigated using popular classical, semi-classical and quantum dielectric models. We find that, irrespective of constrained agreement to the well known high-momentum and high-energy Bethe ridge limit, standard descriptions of low-momentum electron excitations are inconsistent and unphysical. These observations have direct impact on calculations of transport properties such as inelastic mean free paths, stopping powers and escape depths of charged particles in condensed matter systems.

  16. Generation and characterization of warm dense matter isochorically heated by laser-induced relativistic electrons in a wire target

    NASA Astrophysics Data System (ADS)

    Schönlein, A.; Boutoux, G.; Pikuz, S.; Antonelli, L.; Batani, D.; Debayle, A.; Franz, A.; Giuffrida, L.; Honrubia, J. J.; Jacoby, J.; Khaghani, D.; Neumayer, P.; Rosmej, O. N.; Sakaki, T.; Santos, J. J.; Sauteray, A.

    2016-05-01

    We studied the interaction of a high-intensity laser with mass-limited Ti-wires. The laser was focused up to 7× 1020 \\text{W/cm}2 , with contrast of 10-10 to produce relativistic electrons. High-spatial-resolution X-ray spectroscopy was used to measure isochoric heating induced by hot electrons propagating along the wire up to 1 mm depth. For the first time it was possible to distinguish surface target regions heated by mixed plasma mechanisms from those heated only by the hot electrons that generate warm dense matter with temperatures up to 50 eV. Our results are compared to simulations that highlight both the role of electron confinement inside the wire and the importance of resistive stopping powers in warm dense matter.

  17. Visualizing, dating and determining the origin of the primitive carbonaceous matter in rocks: the potential of electron paramagnetic resonance

    NASA Astrophysics Data System (ADS)

    Binet, Laurent; Gourier, Didier; Delpoux, Olivier; Skrzypczak-Bonduelle, Audrey; Vezin, Herve; Derenne, Sylvie; Robert, Francois

    The study of primitive life on Earth is an essential task to determine the physical and chemical processes, which can lead to the emergence of life, and to devise methods to detect possible traces of life on Mars. Traces of primitive life should occur as residual fossil carbonaceous matter embedded in ancient rocks. However, on the early Earth or the early Mars, several sources, namely biological, chemical or extraplanetary, of carbonaceous matter must be considered. Besides, any fossilized carbonaceous matter, whether biological or abiotic, undergoes a complex evolution over geological times so that the memory of its precursors may be partially lost. Therefore the origin of ancient carbonaceous matter is difficult to assess on a chemical or structural basis. In addition, in the case of terrestrial rocks, unavoidable biogenic contamination by endolithic bacteria complicates the problem of proving the origin of primitive terrestrial organic matter. In the specific case of possible Martian rocks, it appears compelling to use techniques able to perform a non-destructive detection and analysis of the possible carbonaceous matter in such precious samples. Fossil carbonaceous matters contain radicals corresponding to unpaired electrons associated with broken chemical bonds or structural defects. These organic radicals are magnetic species, which can be detected and analyzed by Electron Paramagnetic Resonance (EPR). This technique is non-destructive, and sensitive enough to detect ideally 1 ppm of carbonaceous matter in a rock. To assess the potential of radicals to trace back the history and the origin of ancient carbonaceous matter, we performed an EPR study of a series of siliceous rocks (cherts) containing fossil carbonaceous matter with ages ranging from 45 Myr to 3.46 Byr. We showed that the distribution of the carbonaceous matter can be visualized within bulk sample by EPR imaging, with a submillimeter resolution, which may help detecting possible fossil bacterial

  18. Using a Relativistic Electron Beam to Generate Warm Dense Matter for Equation of State Studies

    SciTech Connect

    Berninger, M.

    2011-06-24

    Experimental equation-of-state (EOS) data are difficult to obtain for warm dense matter (WDM)–ionized materials at near-solid densities and temperatures ranging from a few to tens of electron volts–due to the difficulty in preparing suitable plasmas without significant density gradients and transient phenomena. We propose that the Dual Axis Radiographic Hydrodynamic Test (DARHT) facility can be used to create a temporally stationary and spatially uniform WDM. DARHT has an 18 MeV electron beam with 2 kA of current and a programmable pulse length of 20 ns to 200 ns. This poster describes how Monte Carlo n-Particle (MCNP) radiation transport and LASNEX hydrodynamics codes were used to demonstrate that the DARHT beam is favorable for avoiding the problems that have hindered past attempts to constrain WDM properties. In our concept, a 60 ns pulse of electrons is focused onto a small, cylindrical (1 mm diameter × 1 mm long) foam target, which is inside a stiff high-heat capacity tube that both confines the WDM and allows pressure measurements. In our model, the foam is made of 30% density Au and the tamper is a B4C tube. An MCNP model of the DARHT beam investigated electron collisions and the amount of energy deposited in the foam target. The MCNP data became the basis for a LASNEX source model, where the total energy was distributed over a 60 ns time-dependent linear ramp consistent with the DARHT pulse. We used LASNEX to calculate the evolution of the foam EOS properties during and after deposition. Besides indicating that a ~3 eV Au plasma can be achieved, LASNEX models also showed that the WDM generates a shock wave into the tamper whose speed can be measured using photonic Doppler velocimetry. EOS pressures can be identified to better than 10% precision. These pressures can be correlated to energy deposition with electron spectrometry in order to obtain the Au EOS. Radial uniformity in the DARHT beam was also investigated. To further obtain uniform radial

  19. 76 FR 32373 - In the Matter of Certain Electronic Devices Having a Digital Television Receiver and Components...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-06

    ... COMMISSION In the Matter of Certain Electronic Devices Having a Digital Television Receiver and Components... devices having a digital television receiver and components thereof by reason of infringement of certain... Practice and Procedure, 19 CFR 210.10 (2011). Scope of Investigation: Having considered the complaint,...

  20. 76 FR 30967 - In the Matter of Certain Electronic Devices With Multi-Touch Enabled Touchpads and Touchscreens...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-27

    ... From the Federal Register Online via the Government Publishing Office INTERNATIONAL TRADE COMMISSION In the Matter of Certain Electronic Devices With Multi-Touch Enabled Touchpads and Touchscreens; Notice of Request for Statements on the Public Interest Section 337 of the Tariff Act of 1930 provides that if the Commission finds a violation...

  1. 76 FR 31983 - In the Matter of Certain Electronic Devices, Including Mobile Phones, Portable Music Players, and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-02

    ... Nokia Corporation of Finland and Nokia Inc. of White Plains, New York (collectively, ``Nokia''). 75 FR... disapprove the Commission's action. See Presidential Memorandum of July 21, 2005, 70 FR 43251 (July 26, 2005... COMMISSION In the Matter of Certain Electronic Devices, Including Mobile Phones, Portable Music Players,...

  2. 76 FR 40930 - In the Matter of Certain Electronic Devices, Including Mobile Phones, Portable Music Players, and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-12

    ... White Plains, New York (collectively, ``Nokia''). 75 FR 4583-4 (Jan. 28, 2010). The complaint alleged... the parties on the issues under review. 76 FR 31938 (June 2, 2011). On June 9, 2011, the parties... COMMISSION In the Matter of Certain Electronic Devices, Including Mobile Phones, Portable Music Players,...

  3. AMS-02 positron excess: New bounds on dark matter models and hint for primary electron spectrum hardening

    NASA Astrophysics Data System (ADS)

    Feng, Lei; Yang, Rui-Zhi; He, Hao-Ning; Dong, Tie-Kuang; Fan, Yi-Zhong; Chang, Jin

    2014-01-01

    The data collected by ATIC, CREAM and PAMELA all display remarkable cosmic ray nuclei spectrum hardening above the magnetic rigidity ∼240 GV. One natural speculation is that the primary electron spectrum also gets hardened (possibly at ∼80 GV) and the hardening partly accounts for the electron/positron total spectrum excess discovered by ATIC, HESS and Fermi-LAT. If it is the case, the increasing behavior of the subsequent positron-to-electron ratio will get flattened and the spectrum hardening should be taken into account in the joint fit of the electron/positron data otherwise the inferred parameters will be biased. Our joint fits of the latest AMS-02 positron fraction data together with the PAMELA/Fermi-LAT electron/positron spectrum data suggest that the primary electron spectrum hardening is needed in most though not all modelings. The bounds on dark matter models have also been investigated. In the presence of spectrum hardening of primary electrons, the amount of dark-matter-originated electron/positron pairs needed in the modeling is smaller. Even with such a modification, the annihilation channel χχ→μ+μ- has been tightly constrained by the Fermi-LAT Galactic diffuse emission data. The decay channel χ→μ+μ- is found to be viable.

  4. Fast electron generation and transport in solid matter irradiated at relativistic intensities. Evidence of vxB acceleration

    NASA Astrophysics Data System (ADS)

    Baton, S. D.; Santos, J. J.; Amiranoff, F.; Popescu, H.; Gremillet, L.; Koenig, M.; Martinolli, E.; Rousseaux, C.; Rabec-Le-Gloahec, M.; Hall, T. A.; Batani, D.; Perelli, E.; Scianitti, F.; Cowan, T. E.

    2002-11-01

    In the context of the fast electron transport in solid matter and the fast ignitor scheme,we report on measurements of second harmonic of the laser light observed on the rear side of solid targets irradiated by the 100 TW laser at LULI. This emission can be explained by the acceleration of short bunches of electrons in the front of the target by the vxB force. The observations indicate that, in our conditions, the minimum fraction of the laser energy transferred to these electron bunches is of the order of 1 °.

  5. Electronic and nuclear contributions in sub-GeV dark matter scattering: A case study with hydrogen

    NASA Astrophysics Data System (ADS)

    Chen, Jiunn-Wei; Chi, Hsin-Chang; Liu, C.-P.; Wu, Chih-Liang; Wu, Chih-Pan

    2015-11-01

    The scattering of sub-GeV dark matter (DM) particles with hydrogen atoms is studied in this paper. The interactions of DM with electrons and nucleons are both included and formulated in a general framework based on nonrelativistic effective field theory. On the assumption of the same dark matter coupling strengths, it is found that DM-electron interactions dominate the inelastic atomic transitions to discrete excited states and ionization continuum around the threshold regions, and DM-nucleon interactions become more important with increasing energy and dominate in elastic scattering. The conclusion should apply, qualitatively, to practical detector species so that electronic and nuclear contributions in DM scattering processes can be disentangled, while issues including binding effects and the recoil mechanism in many-body systems will require further detailed calculations.

  6. Probing Warm Dense Matter electronic structure using X-ray absorption Near Edge Spectroscopy (XANES)

    NASA Astrophysics Data System (ADS)

    Benuzzi Mounaix, Alessandra

    2011-06-01

    The behavior and physical properties of warm dense matter, fundamental for various branches of physics including planetology and Inertial Confinement Fusion, are non trivial to simulate either theoretically, numerically or experimentally. Despite important progress obtained in the last decade on macroscopic characterization (e.g. equations of state), microscopic studies are today necessary to investigate finely the WDM structure changes, the phase transitions and to test physical hypothesis and approximations commonly used in calculations. In this work, highly compressed aluminum has been investigated with the aim of bringing information on the evolution of its electronic structure by using K-edge shift and XANES. The experiment was performed at LULI laboratory where we used one long pulse (500 ps, IL ~ 8 1013 W/cm2) to create a uniform shock and a second ps beam (IL ~ 1017 W/cm2) to generate an ultra-short broadband X-ray source near the Al K-edge. The spectra were registered by using two conical KAP Bragg crystals. The main target was designed to probe the Aluminum in reshocked conditions allowing us to probe and to test theories in an extreme regime up to now unexplored (ρ ~ 3 ρ0 and T ~ 8 eV). The hydrodynamical Al conditions were measured by using VISARs interferometers and self-emission diagnostics. By increasing the delay between the two beams, we have been able to observe the modification of absorption spectra for unloading Al conditions (ρ >= 0.5 g/cc), and to put in evidence the relocalization of the 3p valence electrons occurring in the metal-non metal transition. All data have been compared to ab initio and dense plasma calculations.

  7. Average Energy Expended Per Electron-Hole Pair in Germanium Detector for Dark Matter Searches

    NASA Astrophysics Data System (ADS)

    Wei, Wenzhao; Wang, Lu; Mei, Dongming; Cubed Collaboration

    2016-03-01

    The value of ɛ, the average energy expended per electron-hole pair, plays a critical role in determining the energy threshold of a bolometer detector with germanium in dark matter searches. We propose an independent method to estimate the value of ɛ down to milli-Kelvin range, which is the operating temperature for a SuperCDMS-like detector. A theoretical model and experimental analysis algorithm are developed in this work to estimate the value of ɛ based on the relationship between ɛ, detector energy resolution (Fano factor) and the primary phonon energy. We also investigated the energy threshold for a SuperCDMS-like detector with the value of ɛ calculated from our model. In this work, we present our theoretical calculation and show how to use experimental data to evaluate the value of ɛ. Subsequently, we report the temperature dependence of ɛ and its value at 50 milli-Kelvin. This work is supported by NSF in part by the NSF OIA 1434142, DOE Grant DE-FG02-10ER46709, and the State of South Dakota.

  8. Applications of scanning electron microscopy to the study of mineral matter in peat

    SciTech Connect

    Raymond, R. Jr.; Andrejko, M.J.; Bardin, S.W.

    1983-01-01

    Scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS) have been used for in situ analysis of minerals in peats by combining methods for producing oriented microtome sections of peat with methods for critical point drying. The combined technique allows SEM analysis of the inorganic components and their associated botanical constituents, along with petrographic identification of the botanical constituents. In peat deposits with abundant fluvial- or marine-derived minerals, one may use the above technique and/or medium- or low-temperature ashing followed by x-ray diffraction to readily identify the various mineral components. However, in some freshwater environments the scarcity of non-silica minerals makes the above techniques impractical. By separating the inorganic residues from the peat, one can isolate the non-silica mineral matter in the SEM for analysis by EDS. Furthermore, such separation allows SEM analysis of features and textures of both silica and non-silica mineral particles that might otherwise be unidentifiable. Results indicate the occurrence of detritial minerals in both Okefenokee and Snuggedy Swamp peats, the presence of authigenic or diagenetic minerals growing within peats, and dissolution features on freshwater sponge spicules that may account for the absence of spicules in Tertiary lignites.

  9. Safeguarding the process of drug administration with an emphasis on electronic support tools

    PubMed Central

    Seidling, Hanna M; Lampert, Anette; Lohmann, Kristina; Schiele, Julia T; Send, Alexander J F; Witticke, Diana; Haefeli, Walter E

    2013-01-01

    Aims The aim of this work is to understand the process of drug administration and identify points in the workflow that resulted in interventions by clinical information systems in order to improve patient safety. Methods To identify a generic way to structure the drug administration process we performed peer-group discussions and supplemented these discussions with a literature search for studies reporting errors in drug administration and strategies for their prevention. Results We concluded that the drug administration process might consist of up to 11 sub-steps, which can be grouped into the four sub-processes of preparation, personalization, application and follow-up. Errors in drug handling and administration are diverse and frequent and in many cases not caused by the patient him/herself, but by family members or nurses. Accordingly, different prevention strategies have been set in place with relatively few approaches involving e-health technology. Conclusions A generic structuring of the administration process and particular error-prone sub-steps may facilitate the allocation of prevention strategies and help to identify research gaps. PMID:24007450

  10. Single-shot mega-electronvolt ultrafast electron diffraction for structure dynamic studies of warm dense matter

    DOE PAGESBeta

    Mo, M. Z.; Shen, X.; Chen, Z.; Li, R. K.; Dunning, M.; Sokolowski-Tinten, K.; Zheng, Q.; Weathersby, S. P.; Reid, A. H.; Coffee, R.; et al

    2016-08-04

    We have developed a single-shot mega-electronvolt ultrafast-electron-diffraction system to measure the structural dynamics of warm dense matter. The electron probe in this system is featured by a kinetic energy of 3.2 MeV and a total charge of 20 fC, with the FWHM pulse duration and spot size at sample of 350 fs and 120 µm respectively. We demonstrate its unique capability by visualizing the atomic structural changes of warm dense gold formed from a laser-excited 35-nm freestanding single-crystal gold foil. The temporal evolution of the Bragg peak intensity and of the liquid signal during solid-liquid phase transition are quantitatively determined.more » This experimental capability opens up an exciting opportunity to unravel the atomic dynamics of structural phase transitions in warm dense matter regime« less

  11. Measurement of reflectivity of spherically bent crystals using Kα signal from hot electrons produced by laser-matter interaction

    SciTech Connect

    Antonelli, L.; Forestier-Colleoni, P.; Folpini, G.; Bouillaud, R.; Fedeli, L.; Fourment, C.; Giuffrida, L.; Hulin, S.; Santos, J. J.; Volpe, L.; Batani, D.; Faenov, A.; Pikuz, S.

    2015-07-15

    In an experiment at the laser facility ECLIPSE of the CELIA laboratory, University of Bordeaux, we measure the reflectivity of spherically bent crystals that are commonly used to investigate the propagation of fast electrons through the Kα radiation they generate in matter. The experimental reflectivity compares well with predictions from a ray-tracing code that takes into account the specific geometry, although the crystals seem to suffer from aging problems.

  12. Condensed-matter ab initio approach for strongly correlated electrons: Application to a quantum spin liquid candidate

    SciTech Connect

    Yamaji, Youhei

    2015-12-31

    Recently, condensed-matter ab initio approaches to strongly correlated electrons confined in crystalline solids have been developed and applied to transition-metal oxides and molecular conductors. In this paper, an ab initio scheme based on constrained random phase approximations and localized Wannier orbitals is applied to a spin liquid candidate Na{sub 2}IrO{sub 3} and is shown to reproduce experimentally observed specific heat.

  13. Dark matter mini-halo around the compact objects: the formation, evolution and possible contribution to the cosmic ray electrons/positrons

    SciTech Connect

    Yang, Rui-Zhi; Fan, Yi-Zhong; Chang, Jin; Waldman, Roni E-mail: yzfan@pmo.ac.cn E-mail: chang@pmo.ac.cn

    2012-01-01

    Dark matter particles may be captured by a star and then thermalized in the star's core. At the end of its life a massive star collapses suddenly and a compact object is formed. The dark matter particles redistribute accordingly. In the inelastic dark matter model, an extended dense dark matter mini-halo surrounding the neutron star may be formed. Such mini-halos may be common in the Galaxy. The electron/positron flux resulting in the annihilation of dark matter particles, however, is unable to give rise to observable signal unless a nascent mini-halo is within a distance ∼ a few 0.1 pc from the Earth.

  14. Free-electron x-ray laser measurements of collisionally-damped plasmons in warm dense matter

    NASA Astrophysics Data System (ADS)

    Sperling, Philipp; Gamboa, Eliseo; Chung, Hyun; Omarbakiyeva, Yultuz; Reinholz, Heidi; Röpke, Gerd; Zastrau, Ulf; Fletcher, Luke; Lee, Hae-Ja; Glenzer, Siegfried

    2015-06-01

    In this talk, we will discuss the first measurement of strong collisions and dynamical screening effects affecting the electron-ion collisions and the electric conductivity of solid matter. We observed collisionally-damped plasmons in highly-spectrally resolved measurements of x-ray scattering from isochorically heated solid aluminum, which permits the first determination of the effects of dynamical screening and strong electron-ion collisions on the dynamic electrical conductivity. X-ray pulses from the seeded Linac Coherent Light Source delivering an average of 0 . 3 mJ of 8 keV x-ray photons in a 0 . 005 % bandwidth pulse, have been focused to micrometer diameter focal spots isochorically heating solid aluminum foils to temperatures up to 6 eV. The forward scattering spectra show plasmons that directly determine the temperature from detailed balance indicating a warm dense matter state. These experiments show a reduced electrical conductivity as well as a non-quadratic plasmon dispersion relation best described by taking into account electron-electron collisions as well as strong electron-ion collisions and dynamical screening effects that are beyond the Born approximation. These findings will affect measurements in the compressed density regime.

  15. Anisotropic diffusion of electrons in liquid xenon with application to improving the sensitivity of direct dark matter searches

    SciTech Connect

    Sorensen, P

    2011-02-14

    Electron diffusion in a liquid xenon time projection chamber has recently been used to infer the z coordinate of a particle interaction, from the width of the electron signal. The goal of this technique is to reduce the background event rate by discriminating edge events from bulk events. Analyses of dark matter search data which employ it would benefit from increased longitudinal electron diffusion. We show that a significant increase is expected if the applied electric field is decreased. This observation is trivial to implement but runs contrary to conventional wisdom and practice. We also extract a first measurement of the longitudinal diffusion coefficient, and confirm the expectation that electron diffusion in liquid xenon is highly anisotropic under typical operating conditions.

  16. School Administrators' Perceptions of the Use of Electronic Portfolios in K-8 Teacher Hiring

    ERIC Educational Resources Information Center

    Painter, Suzanne; Wetzel, Keith

    2005-01-01

    This study analyzed the responses of K-8 human resource directors and principals to teacher education students' electronic portfolios used for hiring. From the focus groups several themes emerged. First, because the principals do not have much time to examine portfolios of any kind, the ideal electronic portfolio would include only a few clearly…

  17. Health Literacy Assessment of the STOFHLA: Paper versus Electronic Administration Continuation Study

    ERIC Educational Resources Information Center

    Chesser, Amy K.; Keene Woods, Nikki; Wipperman, Jennifer; Wilson, Rachel; Dong, Frank

    2014-01-01

    Low health literacy is associated with poor health outcomes. Research is needed to understand the mechanisms and pathways of its effects. Computer-based assessment tools may improve efficiency and cost-effectiveness of health literacy research. The objective of this preliminary study was to assess if administration of the Short Test of Functional…

  18. 76 FR 39263 - Antidumping and Countervailing Duty Proceedings: Electronic Filing Procedures; Administrative...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-06

    ...'') proceedings and requested comments from the public. 75 FR 44163 (September 28, 2010) (``Proposed Rule''). The... 1, 2010 through September 30, 2010. 75 FR 32341 (June 8, 2010); Import Administration IA ACCESS Pilot Program, Public Notice and Request For Comments; Correction, 75 FR 34960 (June 21, 2010)....

  19. 78 FR 45026 - Revisions to the Export Administration Regulations (EAR): Control of Military Electronic...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-25

    ... Administration Regulations: Initial Implementation of Export Control Reform'' (78 FR 22660, April 16, 2013... Control under the United States Munitions List (USML)'' (77 FR 70945, November 28, 2012) (``November 28... Munitions List Category XI and Definition for `Equipment' '' (77 FR 70958, November 28, 2012)...

  20. The Fall of the Faculty: The Rise of the All-Administrative University and Why It Matters

    ERIC Educational Resources Information Center

    Ginsberg, Benjamin

    2011-01-01

    Until very recently, American universities were led mainly by their faculties, which viewed intellectual production and pedagogy as the core missions of higher education. Today, as Benjamin Ginsberg warns in this eye-opening, controversial book, "deanlets"--administrators and staffers often without serious academic backgrounds or experience--are…

  1. CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES: Electron Dispersion in Liquid Alkali and Their Alloys

    NASA Astrophysics Data System (ADS)

    Vora, Aditya M.

    2010-07-01

    Ashcroft's local empty core (EMC) model pseudopotential in the second-order perturbation theory is used to study the electron dispersion relation, the Fermi energy, and deviation in the Fermi energy from free electron value for the liquid alkali metals and their equiatomic binary alloys for the first time. In the present computation, the use of pseudo-alloy-atom model (PAA) is proposed and found successful. The influence of the six different forms of the local field correction functions proposed by Hartree (H), Vashishta-Singwi (VS), Taylor (T), Ichimaru-Utsumi (IU), Farid et al. (F), and Sarkar et al. (S) on the aforesaid electronic properties is examined explicitly, which reflects the varying effects of screening. The depth of the negative hump in the electron dispersion of liquid alkalis decreases in the order Li → K, except for Rb and Cs, it increases. The results of alloys are in predictive nature.

  2. Very low electron temperature in warm dense matter formed by focused picosecond soft x-ray laser pulses

    SciTech Connect

    Ishino, Masahiko Hasegawa, Noboru; Nishikino, Masaharu; Kawachi, Tetsuya; Yamagiwa, Mitsuru; Pikuz, Tatiana; Skobelev, Igor; Faenov, Anatoly; Inogamov, Nail

    2014-11-14

    We investigated the optical emission from the ablating surfaces induced by the irradiations of soft x-ray laser (SXRL) pulses with the aim of estimation of the maximum electron temperature. No emission signal in the spectral range of 400–800 nm could be observed despite the formation of damage structures on the target surfaces. Hence, we estimated an upper limit for the electron temperature of 0.4–0.7 eV for the process duration of 100–1000 ps. Our results imply that the ablation and/or surface modification by the SXRL is not accompanied by plasma formation but is induced by thermo-mechanical pressure, which is so called a spallative ablation. This spallative ablation process occurs in the low electron temperature region of a non-equilibrium state of warm dense matter.

  3. Observation of Dynamical spin shielding in Ce: Why It Matters for Pu Electronic Structure

    SciTech Connect

    Tobin, J G; Yu, S W; Chung, B W; Morton, S A; Komesua, T; Waddill, G D

    2007-03-08

    In a series of experiments and linked theoretical modeling, the range of possible solutions for Pu electronic structure has been dramatically reduced. Nevertheless, the key issue of electron correlation remains.

  4. 77 FR 48007 - Administrative Simplification: Adoption of Operating Rules for Health Care Electronic Funds...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-10

    ... (74 FR 3296), we published a final rule titled, ``Health Insurance Reform; Modifications to the Health... IFC (76 FR 40458). 4. Affordable Care Act: Standards and Operating Rules for Electronic Funds... implements parts of section 1104 of the Affordable Care Act which requires the adoption of operating...

  5. Contributions of organic matter and organic sulfur redox processes to electron flow in anoxic incubations of peat

    NASA Astrophysics Data System (ADS)

    YU, Zhiguo; Peiffer, Stefan; Göttlicher, Jörg; Knorr, Klaus-Holger

    2015-04-01

    Anaerobic decomposition of peat soils involves a number of interdependent microbial processes that ultimately generate CO2 and CH4. In many peat soils, a high ratio of CO2:CH4 was reported, which presumably results from a direct or indirect role of soil organic matter serving as an electron acceptor. Therefore, in this study we intended to test the hypothesis that organic matter (OM) suppresses methanogenesis and sustains anaerobic CO2 production, serving as i) direct electron acceptor or ii) via supporting internal sulfur cycling to maintains CO2 production through bacterial sulfate reduction (BSR). We incubated peat samples of commercial bog peat, inoculated with a small amount of fresh peat to introduce an active microbial community. Samples were amended with sulfate or sulfide and incubated under anoxic conditions for 6 weeks at 30 ° C. Upon anaerobic incubation of peat virtually devoid of inorganic electron acceptors, CO2 and CH4 were produced at a ratio of 3.2. According to the electron budget, the calculated electron accepting capacity (EAC) of OM was 2.36 μeq cm3 d-1. Addition of sulfate significantly increased CO2 production and effectively suppressed CH4 production. After subtracting the EAC provided though sulfate addition (0.97~2.81 μeq cm-3 d-1), EACs supplied by OM reached 3.88 to 4.85 μeq cm-3 d-1.The contribution of organic sulfur was further evaluated by XANES spectroscopy and using natural abundance of δ34S as a tracer. Results demonstrated that BSR involved both addition of H2S and sulfate to OM leading to a formation of reduced organic sulfur and partial changes of oxidized organic sulfur species. The original peat prior to incubation contained 70.5% reduced organic S (R-S-H, R-S-R, R-S-S-R), and 25.9% oxidized S (R-SO3, R-SO2-R, R-SO4-R), whereas the treatment with H2S or sulfate addition comprised 75.7~ 81.1% reduced organic S, and only 21.1~18.9 % oxidized S. Our results imply that that organic matter contributes to anaerobic respiration

  6. Standardization of chemotherapy administration: a multidisciplinary process utilizing electronic learning vignettes.

    PubMed

    Vioral, Anna N

    2014-01-01

    This study describes oncology nurses' knowledge of new chemotherapy safety standards and satisfaction with education using simulated electronic learning vignettes. A quasi-experimental longitudinal, one-group pretest-posttest design was used to examine satisfaction and chemotherapy errors over time. Findings showed the mean number of error scores differed significantly across time points, indicating follow-up should occur to reinforce new standards. Nurse educators also may require more education about innovative educational strategies. PMID:24658042

  7. Hot-electron surface retention in intense short-pulse laser-matter interactions

    SciTech Connect

    Mason, R.J.; Dodd, E.S.; Albright, B.J.

    2005-07-01

    Implicit hybrid plasma simulations predict that a significant fraction of the energy deposited into hot electrons can be retained near the surface of targets with steep density gradients illuminated by intense short-pulse lasers. This retention derives from the lateral transport of heated electrons randomly emitted in the presence of spontaneous magnetic fields arising near the laser spot, from geometric effects associated with a small hot-electron source, and from E fields arising in reaction to the ponderomotive force. Below the laser spot hot electrons are axially focused into a target by the B fields, and can filament in moderate Z targets by resistive Weibel-like instability, if the effective background electron temperature remains sufficiently low. Carefully engineered use of such retention in conjunction with ponderomotive density profile steepening could result in a reduced hot-electron range that aids fast ignition. Alternatively, such retention may disturb a deeper deposition needed for efficient radiography and backside fast ion generation.

  8. Hot and Cold Electron Dynamics Following High-Intensity Laser Matter Interaction

    SciTech Connect

    Antici, P.; Fuchs, J.; Mancic, A.; Audebert, P.; Borghesi, M.; Cecchetti, C. A.; Gremillet, L.; Grismayer, T.; Mora, P.; Sentoku, Y.; D'Humieres, E.; Pipahl, A. C.; Toncian, T.; Willi, O.

    2008-09-05

    The characteristics of fast electrons laser accelerated from solids and expanding into a vacuum from the rear target surface have been measured via optical probe reflectometry. This allows access to the time- and space-resolved dynamics of the fast electron density and temperature and of the energy partition into bulk (cold) electrons. In particular, it is found that the density of the hot electrons on the target rear surface is bell shaped, and that their mean energy at the same location is radially homogeneous and decreases with the target thickness.

  9. Hot and cold electron dynamics following high-intensity laser matter interaction.

    PubMed

    Antici, P; Fuchs, J; Borghesi, M; Gremillet, L; Grismayer, T; Sentoku, Y; d'Humières, E; Cecchetti, C A; Mancić, A; Pipahl, A C; Toncian, T; Willi, O; Mora, P; Audebert, P

    2008-09-01

    The characteristics of fast electrons laser accelerated from solids and expanding into a vacuum from the rear target surface have been measured via optical probe reflectometry. This allows access to the time- and space-resolved dynamics of the fast electron density and temperature and of the energy partition into bulk (cold) electrons. In particular, it is found that the density of the hot electrons on the target rear surface is bell shaped, and that their mean energy at the same location is radially homogeneous and decreases with the target thickness. PMID:18851222

  10. Gambling revenues as a public administration issue: electronic gaming machines in Victoria.

    PubMed

    Pickernell, David; Keast, Robyn; Brown, Kerry; Yousefpour, Nina; Miller, Chris

    2013-12-01

    Gambling activities and the revenues derived have been seen as a way to increase economic development in deprived areas. There are also, however, concerns about the effects of gambling in general and electronic gaming machines (EGMs) in particular, on the resources available to the localities in which they are situated. This paper focuses on the factors that determine the extent and spending of community benefit-related EGM-generated resources within Victoria, Australia, focusing in particular on the relationships between EGM activity and socio-economic and social capital indicators, and how this relates to the community benefit resources generated by gaming. PMID:23065238

  11. 76 FR 12994 - In the Matter of Certain Digital Televisions and Components Thereof, and Certain Electronic...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-09

    ... Devices Having a Blu-Ray Disc Player and Components Thereof; Notice of Investigation AGENCY: U.S... within the United States after importation of certain electronic devices having a Blu-ray Disc player and... the sale within the United States after importation of certain electronic devices having a...

  12. 75 FR 10502 - In the Matter of Certain Electronic Devices, Including Handheld Wireless Communications Devices...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-08

    ..., based on a complaint filed by Saxon Innovation, LLC of Tyler, Texas (``Saxon''). 74 FR 4231. The... a complaint filed by Saxon. 74 FR 14578-9. The complaint, as amended and supplemented, alleges... respondents Samsung Electronics Co., Ltd. of Seoul, Korea; Samsung Electronics America, Inc. of...

  13. How Klingler's dissection permits exploration of brain structural connectivity? An electron microscopy study of human white matter.

    PubMed

    Zemmoura, Ilyess; Blanchard, Emmanuelle; Raynal, Pierre-Ivan; Rousselot-Denis, Cécilia; Destrieux, Christophe; Velut, Stéphane

    2016-06-01

    The objective of this study is to explore histological and ultrastructural changes induced by Klingler's method. Five human brains were prepared. First, the effects of freezing-defrosting on white matter were explored with optical microscopy on corpus callosum samples of two brains; one prepared in accordance with the description of Klingler (1956) and the other without freezing-defrosting. Then, the combined effect of formalin fixation and freezing-defrosting was explored with transmission electron microscopy (EM) on samples of cingulum from one brain: samples from one hemisphere were fixed in paraformaldehyde-glutaraldehyde (para/gluta), other samples from the other hemisphere were fixed in formalin; once fixed, half of the samples were frozen-defrosted. Finally, the effect of dissection was explored from three formalin-fixed brains: one hemisphere of each brain was frozen-defrosted; samples of the corpus callosum were dissected before preparation for scanning EM. Optical microscopy showed enlarged extracellular space on frozen samples. Transmission EM showed no significant alteration of white matter ultrastructure after formalin or para/gluta fixation. Freezing-defrosting created extra-axonal lacunas, larger on formalin-fixed than on para/gluta-fixed samples. In all cases, myelin sheaths were preserved, allowing maintenance of axonal integrity. Scanning EM showed the destruction of most of the extra-axonal structures after freezing-defrosting and the preservation of most of the axons after dissection. Our results are the first to highlight the effects of Klingler's preparation and dissection on white matter ultrastructure. Preservation of myelinated axons is a strong argument to support the reliability of Klingler's dissection to explore the structure of human white matter. PMID:25905864

  14. Electron attachment to the cytosine-centered DNA single strands: does base stacking matter?

    PubMed

    Gu, Jiande; Wang, Jing; Leszczynski, Jerzy

    2012-02-01

    Electron attachment to the trimer of nucleotide, dGpdCpdG, has been investigated by a quantum mechanical approach at a reliable level of theory. The study of the electron attached dGpdCpdG species demonstrates that cytosine contained DNA single strands have a strong tendency to capture low-energy electrons and to form electronically stable cytosine-centered radical anions. The comparative study of the model molecules pdCpdG and dGpdCp reveals that base stacking has little contribution to the adiabatic electron affinity (AEA) of cytosine in DNA single strands. Additionally, the base-base stacking does not affect the vertical detachment energy (VDE) of the cytosine-centered radicals. Intrastrand H-bonding is found to be critical in increasing the values of the AEA and VDE. However, base-base stacking is revealed to be important in enlarging the vertical electron affinity (VEA) of cytosine. The electron attachment to the cytosine moiety intensifies the intrastrand H-bonding between the neighboring G and C bases. This process disrupts the base-base stacking interaction in the radical anion of dGpdCpdG. PMID:22225006

  15. Searching for Dark Matter Signatures in the GLAST LAT Electron Flux

    NASA Technical Reports Server (NTRS)

    Moiseev, Alexander; Profumo, Stefano

    2008-01-01

    We explored several viable scenarios of how LAT might observe DM, when the spectral feature is predicted to be observed in the HE electron flux It has been demonstrated elsewhere that LAT will be capable to detect HE electrons flux in energy range from 20 GeV to - 1 TeV with 520% energy resolution and good statistics If there is a DM-caused feature in the HE electron flux (in the range 20 GeV - 1 TeV), LAT will be the best current instrument to observe it!

  16. Neutrino emissivity from electron-positron annihilation in hot matter in a strong magnetic field

    SciTech Connect

    Amsterdamski, P.; Haensel, P. )

    1990-10-15

    The neutrino emissivity due to electron-positron annihilation in a strong magnetic field is computed. A strong magnetic field can significantly increase the neutrino emissivity at {ital T}{similar to}10{sup 9} K.

  17. Impairment of electron transfer chain induced by acute carnosine administration in skeletal muscle of young rats.

    PubMed

    Macarini, José Roberto; Maravai, Soliany Grassi; Cararo, José Henrique; Dimer, Nádia Webber; Gonçalves, Cinara Ludvig; Kist, Luiza Wilges; Bogo, Mauricio Reis; Schuck, Patrícia Fernanda; Streck, Emilio Luiz; Ferreira, Gustavo Costa

    2014-01-01

    Serum carnosinase deficiency is an inherited disorder that leads to an accumulation of carnosine in the brain tissue, cerebrospinal fluid, skeletal muscle, and other tissues of affected patients. Considering that high levels of carnosine are associated with neurological dysfunction and that the pathophysiological mechanisms involved in serum carnosinase deficiency remain poorly understood, we investigated the in vivo effects of carnosine on bioenergetics parameters, namely, respiratory chain complexes (I-III, II, and II-III), malate dehydrogenase, succinate dehydrogenase, and creatine kinase activities and the expression of mitochondrial-specific transcription factors (NRF-1, PGC-1α , and TFAM) in skeletal muscle of young Wistar rats. We observed a significant decrease of complexes I-III and II activities in animals receiving carnosine acutely, as compared to control group. However, no significant alterations in respiratory chain complexes, citric acid cycle enzymes, and creatine kinase activities were found between rats receiving carnosine chronically and control group animals. As compared to control group, mRNA levels of NRF-1, PGC-1α , and TFAM were unchanged. The present findings indicate that electron transfer through the respiratory chain is impaired in skeletal muscle of rats receiving carnosine acutely. In case these findings are confirmed by further studies and ATP depletion is also observed, impairment of bioenergetics could be considered a putative mechanism responsible for the muscle damage observed in serum carnosinase-deficient patients. PMID:24877122

  18. Impairment of Electron Transfer Chain Induced by Acute Carnosine Administration in Skeletal Muscle of Young Rats

    PubMed Central

    Macarini, José Roberto; Maravai, Soliany Grassi; Cararo, José Henrique; Dimer, Nádia Webber; Gonçalves, Cinara Ludvig; Kist, Luiza Wilges; Bogo, Mauricio Reis; Schuck, Patrícia Fernanda; Streck, Emilio Luiz; Ferreira, Gustavo Costa

    2014-01-01

    Serum carnosinase deficiency is an inherited disorder that leads to an accumulation of carnosine in the brain tissue, cerebrospinal fluid, skeletal muscle, and other tissues of affected patients. Considering that high levels of carnosine are associated with neurological dysfunction and that the pathophysiological mechanisms involved in serum carnosinase deficiency remain poorly understood, we investigated the in vivo effects of carnosine on bioenergetics parameters, namely, respiratory chain complexes (I–III, II, and II-III), malate dehydrogenase, succinate dehydrogenase, and creatine kinase activities and the expression of mitochondrial-specific transcription factors (NRF-1, PGC-1α, and TFAM) in skeletal muscle of young Wistar rats. We observed a significant decrease of complexes I–III and II activities in animals receiving carnosine acutely, as compared to control group. However, no significant alterations in respiratory chain complexes, citric acid cycle enzymes, and creatine kinase activities were found between rats receiving carnosine chronically and control group animals. As compared to control group, mRNA levels of NRF-1, PGC-1α, and TFAM were unchanged. The present findings indicate that electron transfer through the respiratory chain is impaired in skeletal muscle of rats receiving carnosine acutely. In case these findings are confirmed by further studies and ATP depletion is also observed, impairment of bioenergetics could be considered a putative mechanism responsible for the muscle damage observed in serum carnosinase-deficient patients. PMID:24877122

  19. Hot electron generation forming a steep interface in superintense laser-matter interaction

    NASA Astrophysics Data System (ADS)

    Mishra, R.; Sentoku, Y.; Kemp, A. J.

    2009-11-01

    Superintense laser light (>1020 W/cm2) is able to sweep the preplasma over short times and compress the preplasma density gradient typically generated by the prepulse of today's high-intensity, high energy laser systems. Hot electron generation at steep plasma density gradients has been studied in a previous paper [A. J. Kemp, Y. Sentoku, and M. Tabak, Phys. Rev. Lett. 101, 075004 (2008)], which identified a mode of hot electron acceleration that is characterized by the formation of low-density shelf in front of the target. In this paper, we deal with laser incidence on slab target in one-dimensional situation and follow the formation of a steep interface and hot electron acceleration up to later stages of the interaction. We find that a novel mode of absorption appears during which the coupling efficiency drops, while a large number of sub-MeV hot electrons is produced at the interface. These dc-ponderomotive electrons play a dominant role in the bulk heating of solid density targets. We propose an analytical model to describe this absorption mode, explain electron energy spectra, and identify the parameter regime where it appears.

  20. Hot electron generation forming a steep interface in superintense laser-matter interaction

    SciTech Connect

    Mishra, R.; Sentoku, Y.; Kemp, A. J.

    2009-11-15

    Superintense laser light (>10{sup 20} W/cm{sup 2}) is able to sweep the preplasma over short times and compress the preplasma density gradient typically generated by the prepulse of today's high-intensity, high energy laser systems. Hot electron generation at steep plasma density gradients has been studied in a previous paper [A. J. Kemp, Y. Sentoku, and M. Tabak, Phys. Rev. Lett. 101, 075004 (2008)], which identified a mode of hot electron acceleration that is characterized by the formation of low-density shelf in front of the target. In this paper, we deal with laser incidence on slab target in one-dimensional situation and follow the formation of a steep interface and hot electron acceleration up to later stages of the interaction. We find that a novel mode of absorption appears during which the coupling efficiency drops, while a large number of sub-MeV hot electrons is produced at the interface. These dc-ponderomotive electrons play a dominant role in the bulk heating of solid density targets. We propose an analytical model to describe this absorption mode, explain electron energy spectra, and identify the parameter regime where it appears.

  1. Comparison of electron transport calculations in warm dense matter using the Ziman formula

    DOE PAGESBeta

    Burrill, D. J.; Feinblum, D. V.; Charest, M. R. J.; Starrett, C. E.

    2016-02-10

    The Ziman formulation of electrical conductivity is tested in warm and hot dense matter using the pseudo-atom molecular dynamics method. Several implementation options that have been widely used in the literature are systematically tested through a comparison to the accurate, but expensive Kohn–Sham density functional theory molecular dynamics (KS-DFT-MD) calculations. As a result, the comparison is made for several elements and mixtures and for a wide range of temperatures and densities, and reveals a preferred method that generally gives very good agreement with the KS-DFT-MD results, but at a fraction of the computational cost.

  2. Comparison of electron transport calculations in warm dense matter using the Ziman formula

    NASA Astrophysics Data System (ADS)

    Burrill, D. J.; Feinblum, D. V.; Charest, M. R. J.; Starrett, C. E.

    2016-06-01

    The Ziman formulation of electrical conductivity is tested in warm and hot dense matter using the pseudo-atom molecular dynamics method. Several implementation options that have been widely used in the literature are systematically tested through a comparison to the accurate, but expensive Kohn-Sham density functional theory molecular dynamics (KS-DFT-MD) calculations. The comparison is made for several elements and mixtures and for a wide range of temperatures and densities, and reveals a preferred method that generally gives very good agreement with the KS-DFT-MD results, but at a fraction of the computational cost.

  3. Mechanism of heating of pre-formed plasma electrons in relativistic laser-matter interaction

    SciTech Connect

    Paradkar, B. S.; Krasheninnikov, S. I.; Beg, F. N.

    2012-06-15

    The role of the longitudinal ambipolar electric field, present inside a pre-formed plasma, in electron heating and beam generation is investigated by analyzing single electron motion in the presence of one electromagnetic plane wave and 'V' shaped potential well (constant electric field) in a one dimensional slab approximation. It is shown that for the electron confined in an infinite potential well, its motion becomes stochastic when the ratio of normalized laser electric field a{sub 0}, to normalized longitudinal electric field E{sub z}, exceeds unity, i.e., a{sub 0}/E{sub z} Greater-Than-Or-Equivalent-To 1. For a more realistic potential well of finite depth, present inside the pre-formed plasma, the condition for stochastic heating of electrons gets modified to 1 Less-Than-Or-Equivalent-To a{sub 0}/E{sub z} Less-Than-Or-Equivalent-To {radical}(L), where L is the normalized length of the potential well. The energy of electron beam leaving such a potential well and entering the solid scales {approx}a{sub 0}{sup 2}/E{sub z}, which can exceed the laser ponderomotive energy ({approx}a{sub 0}) in the stochastic regime.

  4. Accuracy of administratively-assigned ancestry for diverse populations in an electronic medical record-linked biobank.

    PubMed

    Hall, Jacob B; Dumitrescu, Logan; Dilks, Holli H; Crawford, Dana C; Bush, William S

    2014-01-01

    Recently, the development of biobanks linked to electronic medical records has presented new opportunities for genetic and epidemiological research. Studies based on these resources, however, present unique challenges, including the accurate assignment of individual-level population ancestry. In this work we examine the accuracy of administratively-assigned race in diverse populations by comparing assigned races to genetically-defined ancestry estimates. Using 220 ancestry informative markers, we generated principal components for patients in our dataset, which were used to cluster patients into groups based on genetic ancestry. Consistent with other studies, we find a strong overall agreement (Kappa  = 0.872) between genetic ancestry and assigned race, with higher rates of agreement for African-descent and European-descent assignments, and reduced agreement for Hispanic, East Asian-descent, and South Asian-descent assignments. These results suggest caution when selecting study samples of non-African and non-European backgrounds when administratively-assigned race from biobanks is used. PMID:24896101

  5. Nearsightedness of electronic matter as seen by a physicist and a chemist.

    PubMed

    Bader, Richard F W

    2008-12-25

    The theorem of Hohenberg and Kohn, that the electron density is a unique functional of the external potential, applies to a closed system with a fixed number of electrons. Transferability of the electron density of an atom between two systems, necessary to account for the fundamental role of a functional group with characteristic properties in chemistry, however, is a problem in the physics of an open system. Transferability in chemistry requires a new theorem stated in terms of the density: that the electron density of an atom in a molecule or crystal determines its additive contribution to all properties of the total system, its transferability being determined by a paralleling degree of transferability in the atom's virial field, the virial of the Ehrenfest force exerted on its electron density. Transferability of the virial field is found in spite of unavoidable changes in the external potential that occur on transfer. The properties of an atom in a molecule are determined by the Heisenberg equation of motion for a "proper open system" derived from the principle of stationary action. The theorem is grounded in the common sense observation that two atoms that "look the same", i.e., have the same charge distribution, must possess identical properties. Transferability is discussed in terms of the properties of the electron density, the one-density and the two-density matrix, the latter demonstrating that both the Coulombic and exchange contributions to the energy of a group are separately transferable. It is demonstrated that the exchange indices determined by the two-density matrix provide a readily determinable measure of the effective range of the exchange energy. PMID:19032142

  6. Hot electron energy coupling in ultra-intense laser matter interaction

    SciTech Connect

    Kemp, A J; Sentoku, Y; Tabak, M

    2008-04-15

    We investigate the hydrodynamic response of plasma gradients during the interaction with ultra-intense energetic laser pulses, using one-dimensional kinetic particle simulations. As energetic laser pulses are capable of compressing the preformed plasma over short times, the coupling efficiency as well as the temperature of hot electrons drop, leading to localized heating near the point of absorption. We describe the cause of this drop, explain the electron spectra and identify the parametric region where strong compression occurs. Finally, we discuss implications for fast ignition and other applications.

  7. Nonthermal electron-positron pairs and cold matter in the central engines of active galactic nuclei

    NASA Technical Reports Server (NTRS)

    Zdziarski, Andrzej A.

    1992-01-01

    The nonthermal e(+/-) pair model of the central engine of active galactic nuclei (AGNs) is discussed. The model assumes that nonthermal e(+/-) pairs are accelerated to highly relativistic energies in a compact region close to the central black hole and in the vicinity of some cold matter. The model has a small number of free parameters and explains a large body of AGN observations from EUV to soft gamma-rays. In particular, the model explains the existence of the UV bump, the soft X-rays excess, the canonical hard X-ray power law, the spectral hardening above about 10 keV, and some of the variability patterns in the soft and hard X-rays. In addition, the model explains the spectral steepening above about 50 keV seen in NGC 4151.

  8. 76 FR 24051 - In the Matter of Certain Electronic Devices, Including Mobile Phones, Mobile Tablets, Portable...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-29

    ... Music Players, and Computers, and Components Thereof; Notice of Institution of Investigation AGENCY: U.S... tablets, portable music players, and computers, and components thereof by reason of infringement of... importation of certain electronic devices, including mobile phones, mobile tablets, portable music...

  9. Recent experiments on electron transport in high-intensity laser matter interaction

    NASA Astrophysics Data System (ADS)

    Baton, S. D.; Batani, D.; Manclossi, M.; Morace, A.; Piazza, D.; Benuzzi-Mounaix, A.; Koenig, M.; Guillou, P.; Loupias, B.; Fuchs, J.; Amiranoff, F.; Rabec LeGloahec, M.; Popescu, H.; Rousseaux, C.; Borghesi, M.; Cecchetti, C.; Kodama, R.; Norimatsu, T.; Nakatsutsumi, M.; Aglitskiy, Y.

    2005-12-01

    We present the results of some recent experiments performed at the LULI laboratory using the 100 TW laser facility concerning the study of the propagation of fast electrons in gas and solid targets. Novel diagnostics have been implemented including chirped shadowgraphy and proton radiography. Proton radiography images did show the presence of very strong fields in the gas probably produced by charge separation. In turn these imply a slowing down of the fast electron cloud as it penetrates in the gas and a strong inhibition of propagation. Indeed chirped shadowgraphy images show a strong reduction in time of the velocity of the electron cloud from the initial value, which is of the order of a fraction of c. We also performed some preliminary experiments with cone targets in order to verify the guiding effect and fast electron propagation in presence of the cone. Finally we compared results obtained by changing the target size. Here we only give a first presentation and preliminary analysis of data, which will be addressed in detail in a following paper.

  10. Electron transfer budgets and kinetics of abiotic oxidation and incorporation of aqueous sulfide by dissolved organic matter.

    PubMed

    Yu, Zhi-Guo; Peiffer, Stefan; Göttlicher, Jörg; Knorr, Klaus-Holger

    2015-05-01

    The reactivity of natural dissolved organic matter toward sulfide and has not been well studied with regard to electron transfer, product formation, and kinetics. We thus investigated the abiotic transformation of sulfide upon reaction with reduced and nonreduced Sigma-Aldrich humic acid (HA), at pH 6 under anoxic conditions. Sulfide reacted with nonreduced HA at conditional rate constants of 0.227-0.325 h(-1). The main transformation products were elemental S (S0) and thiosulfate (S2O3(2-)), yielding electron accepting capacities of 2.82-1.75 μmol e- (mg C)(-1). Native iron contents in the HA could account for only 6-9% of this electron transfer. About 22-37% of S reacted with the HA to form organic S (Sorg). Formation of Sorg was observed and no inorganic transformation products occurred for reduced HA. X-ray absorption near edge structure spectroscopy supported Sorg to be mainly zerovalent, such as thiols, organic di- and polysulfides, or heterocycles. In conclusion, our results demonstrate that HA can abiotically reoxidize sulfide in anoxic environments at rates competitive to sulfide oxidation by molecular oxygen or iron oxides. PMID:25850807

  11. The development and application of electronic information system for safety administration of newborns in the rooming-in care

    PubMed Central

    Wang, Fang; Dong, Jian-Cheng; Chen, Jian-Rong; Wu, Hui-Qun; Liu, Man-Hua; Xue, Li-Ly; Zhu, Xiang-Hua; Wang, Jian

    2015-01-01

    Objective: To independently research and develop an electronic information system for safety administration of newborns in the rooming-in care, and to investigate the effects of its clinical application. Methods: By VS 2010 SQL SERVER 2005 database and adopting Microsoft visual programming tool, an interactive mobile information system was established, with integrating data, information and knowledge with using information structures, information processes and information technology. From July 2011 to July 2012, totally 210 newborns from the rooming-in care of the Obstetrics Department of the Second Affiliated Hospital of Nantong University were chosen and randomly divided into two groups: the information system monitoring group (110 cases) and the regular monitoring group (100 cases). Incidence of abnormal events and degree of satisfaction were recorded and calculated. Results: ① The wireless electronic information system has four main functions including risk scaling display, identity recognition display, nursing round notes board and health education board; ② statistically significant differences were found between the two groups both on the active or passive discovery rate of abnormal events occurred in the newborns (P<0.05) and the satisfaction degree of the mothers and their families (P<0.05); ③ the system was sensitive and reliable, and the wireless transmission of information was correct and safety. Conclusions: The system is with high practicability in the clinic and can ensure the safety for the newborns with improved satisfactions. PMID:26885202

  12. Distribution of axon diameters in cortical white matter: an electron-microscopic study on three human brains and a macaque.

    PubMed

    Liewald, Daniel; Miller, Robert; Logothetis, Nikos; Wagner, Hans-Joachim; Schüz, Almut

    2014-10-01

    The aim of this study was to obtain information on the axonal diameters of cortico-cortical fibres in the human brain, connecting distant regions of the same hemisphere via the white matter. Samples for electron microscopy were taken from the region of the superior longitudinal fascicle and from the transitional white matter between temporal and frontal lobe where the uncinate and inferior occipitofrontal fascicle merge. We measured the inner diameter of cross sections of myelinated axons. For comparison with data from the literature on the human corpus callosum, we also took samples from that region. For comparison with well-fixed material, we also included samples from corresponding regions of a monkey brain (Macaca mulatta). Fibre diameters in human brains ranged from 0.16 to 9 μm. Distributions of diameters were similar in the three systems of cortico-cortical fibres investigated, both in humans and the monkey, with most of the average values below 1 μm diameter and a small population of much thicker fibres. Within individual human brains, the averages were larger in the superior longitudinal fascicle than in the transitional zone between temporal and frontal lobe. An asymmetry between left and right could be found in one of the human brains, as well as in the monkey brain. A correlation was also found between the thickness of the myelin sheath and the inner axon diameter for axons whose calibre was greater than about 0.6 μm. The results are compared to white matter data in other mammals and are discussed with respect to conduction velocity, brain size, cognition, as well as diffusion weighted imaging studies. PMID:25142940

  13. Fraunhofer-type diffraction patterns of matter-wave scattering of projectiles: Electron transfer in energetic ion-atom collisions

    NASA Astrophysics Data System (ADS)

    Agueny, Hicham

    2015-07-01

    We present results for single and double electron captures in intermediate energies H+ and 2H+ projectiles colliding with a helium target. The processes under investigations are treated using a nonperturbative semiclassical approach in combination with Eikonal approximation to calculate the scattering differential cross sections. The latter reveals pronounced minima and maxima in the scattering angles, in excellent agreement with the recent experimental data. It turns out that the present structure depends strongly on the projectile energy and shows only slight variations with different capture channels. The observed structure demonstrates the analogy of atomic de Broglie's matter-wave scattering with λd B=1.3 -3.2 ×10-3 a.u. and Fraunhofer-type diffraction of light waves.

  14. Colloquium: Illuminating the Kapitza-Dirac effect with electron matter optics

    SciTech Connect

    Batelaan, H.

    2007-07-15

    The observation of the Kapitza-Dirac effect raises conceptual, theoretical, and experimental questions. The Kapitza-Dirac effect is often described as diffraction of free electrons from a standing wave of light or stimulated Compton scattering. However, for the two-color Kapitza-Dirac effect these two interpretations appear to lead to paradoxical conclusions. The discussion of this paradox deepens our understanding of both of these versions of the Kapitza-Dirac effect.

  15. Magnetic collimation of relativistic positrons and electrons from high intensity laser–matter interactions

    SciTech Connect

    Chen, Hui; Heeter, R. F.; Link, A.; Fiksel, G.; Barnak, D.; Chang, P.-Y.; Meyerhofer, D. D.

    2014-04-15

    Collimation of positrons produced by laser-solid interactions has been observed using an externally applied axial magnetic field. The collimation leads to a narrow divergence positron beam, with an equivalent full width at half maximum beam divergence angle of 4° vs the un-collimated divergence of about 20°. A fraction of the laser-produced relativistic electrons with energies close to those of the positrons is collimated, so the charge imbalance ratio (n{sub e−}/n{sub e+}) in the co-propagating collimated electron-positron jet is reduced from ∼100 (no collimation) to ∼2.5 (with collimation). The positron density in the collimated beam increased from 5 × 10{sup 7} cm{sup −3} to 1.9 × 10{sup 9} cm{sup −3}, measured at the 0.6 m from the source. This is a significant step towards the grand challenge of making a charge neutral electron-positron pair plasma jet in the laboratory.

  16. Studies of the Relativistic Electron Source and Related Phenomena in Petawatt Laser Matter Interactions

    SciTech Connect

    Key, M.H.; Campbell, E.M.; Cowen, T.E.; Hatchett, S.P.; Jenary, E.A.; Koch, J.A.; Langson, A.B.; Lasinski, B.F.; Lee, W.; Mackinnon, A.; Offenberger, A.A.; Perry, M.D.; Phillips, T.J.; Roth, M.; Sangster, T.C.; Singh, M.S.; Snavely, R.; Stoyer, M.A.; Wilks, S.C.; Yaskire, K.Y.

    1999-11-11

    The interaction of laser radiation with solid targets at 1 petawatt power and intensity up to 3 x 10{sup 20} Wcm{sup -2} has been studied with emphasis on relativistic electrons and high-energy ions. Secondary effects including Bremsstrahlung radiation, nuclear interactions and heating have been characterized. A collimated beam of protons with up to 55 MeV energy is emitted normal to the rear surface of thin targets and its characteristics and origin are discussed. The significance of the data for radiography, fast ignition and proton beam applications is summarized.

  17. Studies of the relativistic electron source and related phenomena in Petawatt Laser matter interactions

    SciTech Connect

    Key, M H; Campbell, E M; Cowan, T E; Hatchett, S P; Henry, E A; Koch, J A; Landgon, A B; Lasinski, B F; Lee, R W; MacKinnon, A; Offenberger, A; Pennington, D M; Perry, M D; Sangster, T C; Yasuike, K; Snavely, R; Roth, M; Phillips, T W; Stoyer, M A; Wilks, S C; Singh, M S

    1999-09-27

    The interaction of laser radiation with solid targets at 1 petawatt power and intensity up to 3x10{sup 20} Wcm{sup -2} has been studied with emphasis on relativistic electrons and high energy ions. Secondary effects including Bremsstrahlung radiation, nuclear interactions and heating have been characterized. A collimated beam of protons with up to 55 MeV energy is emitted normal to the rear surface of thin targets and its characteristics and origin are discussed. The significance of the data for radiography, fast ignition and proton beam applications is summarized.

  18. Transient and Sustained Changes in Operational Performance, Patient Evaluation, and Medication Administration During Electronic Health Record Implementation in the Emergency Department

    PubMed Central

    Ward, Michael J.; Froehle, Craig M.; Hart, Kimberly W.; Collins, Sean P.; Lindsell, Christopher J.

    2014-01-01

    Study objective Little is known about the transient and sustained operational effects of electronic health records on emergency department (ED) performance. We quantify how the implementation of a comprehensive electronic health record was associated with metrics of operational performance, test ordering, and medication administration at a single-center ED. Methods We performed a longitudinal analysis of electronic data from a single, suburban, academic ED during 28 weeks between May 2011 and November 2011. We assessed length of stay, use of diagnostic testing, medication administration, radiologic imaging, and patient satisfaction during a 4-week baseline measurement period and then tracked changes in these variables during the 24 weeks after implementation of the electronic health record. Results Median length of stay increased and patient satisfaction was reduced transiently, returning to baseline after 4 to 8 weeks. Rates of laboratory testing, medication administration, overall radiologic imaging, radiographs, computed tomography scans, and ECG ordering all showed sustained increases throughout the 24 weeks after electronic health record implementation. Conclusion Electronic health record implementation in this single-center study was associated with both transient and sustained changes in metrics of ED performance, as well as laboratory and medication ordering. Understanding ways in which an ED can be affected by electronic health record implementation is critical to providing insight about ways to mitigate transient disruption and to maximize potential benefits of the technology. PMID:24041783

  19. Constraining the Cosmic Ray Electron Distribution and the Halo Dark Matter from the High Energy Gamma-Ray Background

    NASA Astrophysics Data System (ADS)

    Chary, R.; Wright, E. L.

    2000-10-01

    We present an independent estimate of the high latitude (|b|>20 deg) contribution to the E>30 MeV gamma-ray background from Galactic nucleon-nucleon, electron bremsstrahlung and inverse Compton processes. In particular, the inverse Compton contribution has been estimated for different cosmic ray electron distributions and after factoring in the anisotropy in the interstellar radiation field and the anisotropic Klein-Nishina scattering cross section. We find that the emission from the inverse Compton process when the anisotropy in the radiation field is included can be higher by up to 50% when compared to estimates that adopt an isotropic radiation field. Simulated inverse Compton maps with a cosmic ray electron distribution represented by a ``pill box'' extending up to a distance of 5 kpc above the Galactic plane provide better fits to the EGRET intensity maps suggesting that the cosmic ray halo may be larger than previously thought. Fitting for the Galactic components of gamma-ray emission confirms the existence of an isotropic component with an intensity that can be represented by the form 27.7*(E/MeV)-2.16 ph m-2 s-1 sr-1 MeV-1, in excellent agreement with previous estimates. The spectrum of the isotropic component further argues strongly in favor of unresolved gamma-ray blazars being the source of this emission. Introduction of an anisotropic component improves the quality of the fits. However, this component, which could potentially arise from the dark matter in the Galactic halo, is not well characterized by a single power law which might be associated with any single dark matter candidate. It has an intensity of about a third of the isotropic background above E > 100 MeV at the level of 3*10-2 ph m-2 s-1 sr-1. The best fit power law spectrum to this component has a photon index of -1.7. Based on the intensity and spectrum of the anisotropic component we derive upper limits of 109Msun for the mass of cold, baryonic gas within the solar circle and a primordial

  20. Ultrawide electrical tuning of light matter interaction in a high electron mobility transistor structure

    PubMed Central

    Pal, Shovon; Nong, Hanond; Markmann, Sergej; Kukharchyk, Nadezhda; Valentin, Sascha R.; Scholz, Sven; Ludwig, Arne; Bock, Claudia; Kunze, Ulrich; Wieck, Andreas D.; Jukam, Nathan

    2015-01-01

    The interaction between intersubband resonances (ISRs) and metamaterial microcavities constitutes a strongly coupled system where new resonances form that depend on the coupling strength. Here we present experimental evidence of strong coupling between the cavity resonance of a terahertz metamaterial and the ISR in a high electron mobility transistor (HEMT) structure. The device is electrically switched from an uncoupled to a strongly coupled regime by tuning the ISR with epitaxially grown transparent gate. The asymmetric potential in the HEMT structure enables ultrawide electrical tuning of ISR, which is an order of magnitude higher as compared to an equivalent square well. For a single heterojunction with a triangular confinement, we achieve an avoided splitting of 0.52 THz, which is a significant fraction of the bare intersubband resonance at 2 THz. PMID:26578287

  1. Soft x-ray free electron laser microfocus for exploring matter under extreme conditions.

    PubMed

    Nelson, A J; Toleikis, S; Chapman, H; Bajt, S; Krzywinski, J; Chalupsky, J; Juha, L; Cihelka, J; Hajkova, V; Vysin, L; Burian, T; Kozlova, M; Fäustlin, R R; Nagler, B; Vinko, S M; Whitcher, T; Dzelzainis, T; Renner, O; Saksl, K; Khorsand, A R; Heimann, P A; Sobierajski, R; Klinger, D; Jurek, M; Pelka, J; Iwan, B; Andreasson, J; Timneanu, N; Fajardo, M; Wark, J S; Riley, D; Tschentscher, T; Hajdu, J; Lee, R W

    2009-09-28

    We have focused a beam (BL3) of FLASH (Free-electron LASer in Hamburg: lambda = 13.5 nm, pulse length 15 fs, pulse energy 10-40 microJ, 5 Hz) using a fine polished off-axis parabola having a focal length of 270 mm and coated with a Mo/Si multilayer with an initial reflectivity of 67% at 13.5 nm. The OAP was mounted and aligned with a picomotor controlled six-axis gimbal. Beam imprints on poly(methyl methacrylate) - PMMA were used to measure focus and the focused beam was used to create isochoric heating of various slab targets. Results show the focal spot has a diameter of < or =1 microm. Observations were correlated with simulations of best focus to provide further relevant information. PMID:19907618

  2. CKD screening and management in the Veterans Health Administration: the impact of system organization and an innovative electronic record.

    PubMed

    Patel, Thakor G; Pogach, Leonard M; Barth, Robert H

    2009-03-01

    At the beginning of this decade, Healthy People 2010 issued a series of objectives to "reduce the incidence, morbidity, mortality and health care costs of chronic kidney disease." A necessary feature of any program to reduce the burden of kidney disease in the US population must include mechanisms to screen populations at risk and institute early the aspects of management, such as control of blood pressure, management of diabetes, and, in patients with advanced chronic kidney disease (CKD), preparation for dialysis therapy and proper vascular access management, that can retard CKD progression and improve long-term outcome. The Department of Veterans Affairs and the Veterans Health Administration is a broad-based national health care system that is almost uniquely situated to address these issues and has developed a number of effective approaches using evidence-based clinical practice guidelines, performance measures, innovative use of a robust electronic medical record system, and system oversight during the past decade. In this report, we describe the application of this systems approach to the prevention of CKD in veterans through the treatment of risk factors, identification of CKD in veterans, and oversight of predialysis and dialysis care. The lessons learned and applicability to the private sector are discussed. PMID:19231765

  3. Electron Paramagnetic Resonance: a tool for in situ detection, imaging and dating of biosignatures in primitive organic matter

    NASA Astrophysics Data System (ADS)

    Gourier, D.; Binet, L.; Vezin, H.

    2012-04-01

    Electron Paramagnetic Resonance (EPR) spectroscopy and imaging are based on the interaction of a microwave electromagnetic field (typically in the GHz range) with electron spins in presence of an external magnetic field. Contrary to UV-visible and Infrared light, microwave radiation can penetrate in most non conducting materials, so that EPR is sensitive to the bulk (and not to the surface) of samples. All the paramagnetic defects, impurities, point defects in the mineral matrix, radicals in carbonaceous matter of an ancient rock can be detected by this technique. As the most ancient traces of life, as old as 3.5 Gy, are recorded as carbonaceous microstructures in siliceous sedimentary structures (cherts), the radical defects of these microstructures can be probed in situ without sample preparation. By using continuous-wave EPR, the fossilized carbonaceous matter can be mapped at the sub-millimeter scale (EPR imaging)[1], and can be dated with respect to the host rock (evolution of the EPR lineshape)[2]. Thus this method could be used for contamination detection (endolithic bacteria, infiltration etc…). By using pulsed-EPR spectroscopy (instead of continuous wave), nuclear magnetic transitions of elements in and around radicals can be detected with a high resolution and sensitivity. We show that specific nuclear transitions for hydrogen (1H and 2D) and 13C (and other nuclei such as 29Si and 31P) can be identified in extraterrestrial carbonaceous matter (meteorites) and in Precambrian and younger cherts. These pulsed techniques provide molecular scale biosignatures for primitive life detection and internal probes to study the history of organic matter in the early solar system [3,4]. Paramagnetic biosignatures are not limited to the organic component of cherts. Specific EPR biosignatures of metal ions can be detected in biominerals such as MnO2 [5] or in molecular V4+ complexes [6]. EPR is thus a potential technique for the search of primitive life on Earth and

  4. Excited electronic states of complex heteroatomic molecules in series and in different aggregation states of matter

    NASA Astrophysics Data System (ADS)

    Obukhov, Alexandr E.

    1995-01-01

    We investigate the spectroscopic and photophysical properties of new series complex molecules, which is capable of fluorescence and some generating light in solvents of various kinds within the wavelength region 308 - 420 nm with a high fluorescence quantum yield (gamma) equals 0.01 - 0.97 and a low threshold pump density Elp(Plp). We worked from the measured lifetimes and to calculate the rate constants for radiative decay (Kfl) and intercombinational conversion, (KST), the cross section for a stimulated emission ((sigma) 31osc), and the characteristic time tlp in solvents of various types and in the vapor. The latter is the limiting rise time of the pump pulse (tlp) at which the generation of electromagnetic radiation is still possible. The cross sections for the induced singlet-singlet ((sigma) 3S*) and triplet-triplet ((sigma) 2T*) absorption in the generation band, required for calculating tlp, were taken from a variety of sources: experimental and for all other complex molecules, we used results calculated by some semiempirical methods SCF MO LKAO the Pariser-Parr-Pople (PPP/CI) and in complete neglect of differential overlap (INDO/S-CI). The results show that the decrease or increase of in the switch from solution to vapor, or as the properties of the solvent change, stems from dynamic separation or overlap of the lasing and induced absorption bands of the S1* yields Sn* and T1 yields Tn transitions. Lasing does not occur in concentrated acids because of the nearly complete overlap of the limiting gain and induced absorption T1 yields Tn transitions (compare it with the behavior of dyes in their chemo absorbed state). Using the density matrix method, we show that the solvent affects the distribution of electron density among the individual atoms and fragments of the complex geteratomic molecule in the ground state, leading to systematic changes in geometry. As a result, there are changes in the distribution of bond lengths in the rings of the azo

  5. Long-Term Exposure to Ambient Fine Particulate Matter and Renal Function in Older Men: The Veterans Administration Normative Aging Study

    PubMed Central

    Mehta, Amar J.; Zanobetti, Antonella; Bind, Marie-Abele C.; Kloog, Itai; Koutrakis, Petros; Sparrow, David; Vokonas, Pantel S.; Schwartz, Joel D.

    2016-01-01

    Background: It is unknown if ambient fine particulate matter (PM2.5) is associated with lower renal function, a cardiovascular risk factor. Objective: We investigated whether long-term PM2.5 exposure was associated with estimated glomerular filtration rate (eGFR) in a cohort of older men living in the Boston Metropolitan area. Methods: This longitudinal analysis included 669 participants from the Veterans Administration Normative Aging Study with up to four visits between 2000 and 2011 (n = 1,715 visits). Serum creatinine was measured at each visit, and eGFR was calculated according to the Chronic Kidney Disease Epidemiology Collaboration equation. One-year exposure to PM2.5 prior to each visit was assessed using a validated spatiotemporal model that utilized satellite remote-sensing aerosol optical depth data. eGFR was modeled in a time-varying linear mixed-effects regression model as a continuous function of 1-year PM2.5, adjusting for important covariates. Results: One-year PM2.5 exposure was associated with lower eGFRs; a 2.1-μg/m3 interquartile range higher 1-year PM2.5 was associated with a 1.87 mL/min/1.73 m2 lower eGFR [95% confidence interval (CI): –2.99, –0.76]. A 2.1 μg/m3-higher 1-year PM2.5 was also associated with an additional annual decrease in eGFR of 0.60 mL/min/1.73 m2 per year (95% CI: –0.79, –0.40). Conclusions: In this longitudinal sample of older men, the findings supported the hypothesis that long-term PM2.5 exposure negatively affects renal function and increases renal function decline. Citation: Mehta AJ, Zanobetti A, Bind MC, Kloog I, Koutrakis P, Sparrow D, Vokonas PS, Schwartz JD. 2016. Long-term exposure to ambient fine particulate matter and renal function in older men: the VA Normative Aging Study. Environ Health Perspect 124:1353–1360; http://dx.doi.org/10.1289/ehp.1510269 PMID:26955062

  6. Fibrillar polysaccharides in marine macromolecular organic matter as imaged by atomic force microscopy and transmission electron microscopy

    SciTech Connect

    Santschi, P.H.; Balnois, E.; Wilkinson, K.J.; Zhang, J.; Buffle, J.; Guo, L.

    1998-07-01

    A consensus is now emerging that the structure of organic macromolecules will determine their function in aquatic systems. Transmission electron microscopy (TEM) and atomic force microscopy (AFM) are highly complementary techniques for the study of natural colloids and can, when used together, reveal complementary information about the relative abundance and structures of aquatic macromolecules and colloids. In this study, colloid samples from the Gulf of Mexico and Middle Atlantic Bight of nominal sizes 1--200 nm were collected by cross-flow ultrafiltration, diafiltered, and freeze-dried. Rehydrated colloids were analyzed in parallel by AFM and TEM using standardized techniques. Results from estuarine, surface-, and deep-water samples show that an important fraction of colloidal organic matter (COM) consists of fibrillar material, which is rich in polysaccharides and fresher (i.e., has a younger radiocarbon age) than the bulk COM. This result is important because COM makes up 30--70% of oceanic and estuarine nominally dissolved organic matter. Other microparticles appear to be quasi-spherical, often attached to the fibrils like pearls. In the surface waters of the Gulf of Mexico, Middle Atlantic Bight, and Trinity River, fibrils with diameters of 1--3 nm and lengths of 100--2,000 nm were predominant. Although fibrils were also observed in samples from the benthic nepheloid layer in the Gulf of Mexico (1,600 m) and Middle Atlantic Bight (2,600 m), a much greater heterogeneity of colloid and macromolecule shapes and sizes was observed in these deeper waters.

  7. Biologically Inspired Electronic, Photovoltaic and Microfluidic Devices Based on Aqueous Soft Matter

    NASA Astrophysics Data System (ADS)

    Koo, Hyung Jun

    Hydrogels are a water-based soft material where three dimensional networks of hydrophilic polymer retain large amounts of water. We developed hydrogel based devices with new functionalities inspired by materials, structures and processes in nature. The advantages, such as softness, biocompatibility and high ionic conductivity, could enable hydrogels to be novel materials for biomimetic devices operated by ionic current. Moreover, microfluidic patterns are easily embedded in moldable hydrogels and allow for unique convective/diffusive transport mechanism in porous gel to be used for uniform delivery of reagent solution. We first developed and characterized a device with unidirectional ionic current flow across a SiO2/Gel junction, which showed highly efficient rectification of the ionic current by non-linear conductivity of SiO2 films. Addition of polyelectrolytes and salt to the gel layer significantly improved the performance of the new diode device because of the enhanced gel conductance. A soft matter based diode composed of hydrogel and liquid metal (eutectic gallium indium, EGaIn) was also presented. The ability to control the thickness, and thus resistivity, of an insulating oxide skin on the metal enables the current rectification. The effect of ionic conductivity and pH on the formation of the insulating oxide was investigated in a simple model system with liquid metal/electrolyte solution or hydrogel/Pt interfaces. Finally, we present a diode composed entirely of soft materials by replacing the platinum electrode with a second liquid metal electrode. A new type of hydrogel-based photovoltaic systems (HGPVs) was constructed. Two photosensitive ionized molecules embedded in aqueous gel served as photoactive species. The HGPVs showed performance comparable with or higher than those of some other biomimetic or ionic photovoltaic systems reported recently. We suggest a provisional mechanism of the device operation, based on a synergetic effect of the two dye

  8. Biologically Inspired Electronic, Photovoltaic and Microfluidic Devices Based on Aqueous Soft Matter

    NASA Astrophysics Data System (ADS)

    Koo, Hyung Jun

    Hydrogels are a water-based soft material where three dimensional networks of hydrophilic polymer retain large amounts of water. We developed hydrogel based devices with new functionalities inspired by materials, structures and processes in nature. The advantages, such as softness, biocompatibility and high ionic conductivity, could enable hydrogels to be novel materials for biomimetic devices operated by ionic current. Moreover, microfluidic patterns are easily embedded in moldable hydrogels and allow for unique convective/diffusive transport mechanism in porous gel to be used for uniform delivery of reagent solution. We first developed and characterized a device with unidirectional ionic current flow across a SiO2/Gel junction, which showed highly efficient rectification of the ionic current by non-linear conductivity of SiO2 films. Addition of polyelectrolytes and salt to the gel layer significantly improved the performance of the new diode device because of the enhanced gel conductance. A soft matter based diode composed of hydrogel and liquid metal (eutectic gallium indium, EGaIn) was also presented. The ability to control the thickness, and thus resistivity, of an insulating oxide skin on the metal enables the current rectification. The effect of ionic conductivity and pH on the formation of the insulating oxide was investigated in a simple model system with liquid metal/electrolyte solution or hydrogel/Pt interfaces. Finally, we present a diode composed entirely of soft materials by replacing the platinum electrode with a second liquid metal electrode. A new type of hydrogel-based photovoltaic systems (HGPVs) was constructed. Two photosensitive ionized molecules embedded in aqueous gel served as photoactive species. The HGPVs showed performance comparable with or higher than those of some other biomimetic or ionic photovoltaic systems reported recently. We suggest a provisional mechanism of the device operation, based on a synergetic effect of the two dye

  9. CHARACTERIZATION OF PARTICULATE MATTER FROM PHOENIX, ARIZONA, USING RAY FLUORESCENCE AND COMPUTER-CONTROLLED SCANNING ELECTRON MICROSCOPY

    EPA Science Inventory

    Numerous epidemiological studies have found associations between airborne particulate matter measured at community monitors and increased mortality and morbidity. Chemical and physical characteristics of particulate matter (e.g., elemental composition, size) and source identifi...

  10. Evaluating Maintenance Performance: Test Administrator's Manual and Test Subject's Instructions for Criterion Referenced Job Task Performance Tests for Electronic Maintenance. Final Report.

    ERIC Educational Resources Information Center

    Shriver, Edgar L.; And Others

    This document furnishes a complete copy of the Test Subject's Instructions and the Test Administrator's Handbook for a battery of criterion referenced Job Task Performance Tests (JTPT) for electronic maintenance. General information is provided on soldering, Radar Set AN/APN-147(v), Radar Set Special Equipment, Radar Set Bench Test Set-Up, and…

  11. A Study on the Attitudes of Students, Instructors, and Educational Principals to Electronic Administration of Final-Semester Examinations in Payame Noor University in Iran

    ERIC Educational Resources Information Center

    Omidian, Faranak; Nedayeh Ali, Farzaneh

    2015-01-01

    The aim of this study was to investigate the attitudes of students, instructors, and educational principals to electronic administration of final-semester examinations at undergraduate and post- graduate levels in Payame Noor University in Khuzestan. The statistical population of this study consisted of all educational principals, instructors, of…

  12. Experimental station to study the interaction of intense femtosecond vacuum ultraviolet pulses with matter at TTF1 free electron laser

    NASA Astrophysics Data System (ADS)

    Sobierajski, R.; Krzywinski, J.; Andrejczuk, A.; Hahn, U.; Treusch, R.; Jurek, M.; Klinger, D.; Nietubyć, R.; Pełka, J. B.; Reniewicz, H.; Sikora, M.; Sobala, W.

    2005-01-01

    An experimental station to study the interaction of intense femtosecond vacuum ultraviolet pulses generated by the TTF1 free electron laser (FEL) (DESY, Germany) with solids was developed. The vacuum chamber, the sample holder and the detectors had been designed to fulfill strong constraints caused both by the unique properties of the interacting radiation and by TTF1 FEL innovative design. The applied mounting system allowed one to move and rotate the samples precisely with 4degrees of freedom and to heat them up to the maximal temperature of 1000K. In order to accomplish the in situ growth of thin metallic layers on the sample surfaces, evaporation cells had been installed in the vacuum chamber. A time-of-flight apparatus capable of recording both electrons and ions excited on the solid surfaces by the laser pulses had been included in the chamber design. A pulse energy monitor had been placed in the laser beam outside the experimental chamber. A second energy detector had been mounted inside the chamber on a rotational arm, permitting the angular resolved reflectivity measurements. The detectors placed in the chamber enabled a real-time study both of the ionized damage products and the reflected light from the interaction place on the sample surfaces. The measurements were made with respect to the primary beam incident angle and energy. Examples of the experimental results as well as an off-line analysis are presented. The usability of constructed experimental system to study of the interaction of intense, femtosecond pulses with solid matter is demonstrated.

  13. Characterization of leaf-level particulate matter for an industrial city using electron microscopy and X-ray microanalysis.

    PubMed

    Sgrigna, G; Baldacchini, C; Esposito, R; Calandrelli, R; Tiwary, A; Calfapietra, C

    2016-04-01

    This study reports application of monitoring and characterization protocol for particulate matter (PM) deposited on tree leaves, using Quercus ilex as a case study species. The study area is located in the industrial city of Terni in central Italy, with high PM concentrations. Four trees were selected as representative of distinct pollution environments based on their proximity to a steel factory and a street. Wash off from leaves onto cellulose filters were characterized using scanning electron microscopy and energy dispersive X-ray spectroscopy, inferring the associations between particle sizes, chemical composition, and sampling location. Modeling of particle size distributions showed a tri-modal fingerprint, with the three modes centered at 0.6 (factory related), 1.2 (urban background), and 2.6μm (traffic related). Chemical detection identified 23 elements abundant in the PM samples. Principal component analysis recognized iron and copper as source-specific PM markers, attributed mainly to industrial and heavy traffic pollution respectively. Upscaling these results on leaf area basis provided a useful indicator for strategic evaluation of harmful PM pollutants using tree leaves. PMID:26802337

  14. Probing local and electronic structure in Warm Dense Matter: single pulse synchrotron x-ray absorption spectroscopy on shocked Fe

    PubMed Central

    Torchio, Raffaella; Occelli, Florent; Mathon, Olivier; Sollier, Arnaud; Lescoute, Emilien; Videau, Laurent; Vinci, Tommaso; Benuzzi-Mounaix, Alessandra; Headspith, Jon; Helsby, William; Bland, Simon; Eakins, Daniel; Chapman, David; Pascarelli, Sakura; Loubeyre, Paul

    2016-01-01

    Understanding Warm Dense Matter (WDM), the state of planetary interiors, is a new frontier in scientific research. There exists very little experimental data probing WDM states at the atomic level to test current models and those performed up to now are limited in quality. Here, we report a proof-of-principle experiment that makes microscopic investigations of materials under dynamic compression easily accessible to users and with data quality close to that achievable at ambient. Using a single 100 ps synchrotron x-ray pulse, we have measured, by K-edge absorption spectroscopy, ns-lived equilibrium states of WDM Fe. Structural and electronic changes in Fe are clearly observed for the first time at such extreme conditions. The amplitude of the EXAFS oscillations persists up to 500 GPa and 17000 K, suggesting an enduring local order. Moreover, a discrepancy exists with respect to theoretical calculations in the value of the energy shift of the absorption onset and so this comparison should help to refine the approximations used in models. PMID:27246145

  15. Probing local and electronic structure in Warm Dense Matter: single pulse synchrotron x-ray absorption spectroscopy on shocked Fe

    NASA Astrophysics Data System (ADS)

    Torchio, Raffaella; Occelli, Florent; Mathon, Olivier; Sollier, Arnaud; Lescoute, Emilien; Videau, Laurent; Vinci, Tommaso; Benuzzi-Mounaix, Alessandra; Headspith, Jon; Helsby, William; Bland, Simon; Eakins, Daniel; Chapman, David; Pascarelli, Sakura; Loubeyre, Paul

    2016-06-01

    Understanding Warm Dense Matter (WDM), the state of planetary interiors, is a new frontier in scientific research. There exists very little experimental data probing WDM states at the atomic level to test current models and those performed up to now are limited in quality. Here, we report a proof-of-principle experiment that makes microscopic investigations of materials under dynamic compression easily accessible to users and with data quality close to that achievable at ambient. Using a single 100 ps synchrotron x-ray pulse, we have measured, by K-edge absorption spectroscopy, ns-lived equilibrium states of WDM Fe. Structural and electronic changes in Fe are clearly observed for the first time at such extreme conditions. The amplitude of the EXAFS oscillations persists up to 500 GPa and 17000 K, suggesting an enduring local order. Moreover, a discrepancy exists with respect to theoretical calculations in the value of the energy shift of the absorption onset and so this comparison should help to refine the approximations used in models.

  16. Probing local and electronic structure in Warm Dense Matter: single pulse synchrotron x-ray absorption spectroscopy on shocked Fe.

    PubMed

    Torchio, Raffaella; Occelli, Florent; Mathon, Olivier; Sollier, Arnaud; Lescoute, Emilien; Videau, Laurent; Vinci, Tommaso; Benuzzi-Mounaix, Alessandra; Headspith, Jon; Helsby, William; Bland, Simon; Eakins, Daniel; Chapman, David; Pascarelli, Sakura; Loubeyre, Paul

    2016-01-01

    Understanding Warm Dense Matter (WDM), the state of planetary interiors, is a new frontier in scientific research. There exists very little experimental data probing WDM states at the atomic level to test current models and those performed up to now are limited in quality. Here, we report a proof-of-principle experiment that makes microscopic investigations of materials under dynamic compression easily accessible to users and with data quality close to that achievable at ambient. Using a single 100 ps synchrotron x-ray pulse, we have measured, by K-edge absorption spectroscopy, ns-lived equilibrium states of WDM Fe. Structural and electronic changes in Fe are clearly observed for the first time at such extreme conditions. The amplitude of the EXAFS oscillations persists up to 500 GPa and 17000 K, suggesting an enduring local order. Moreover, a discrepancy exists with respect to theoretical calculations in the value of the energy shift of the absorption onset and so this comparison should help to refine the approximations used in models. PMID:27246145

  17. The Institute of Public Administration's Document Center: From Paper to Electronic Records--A Full Image Government Documents Database.

    ERIC Educational Resources Information Center

    Al-Zahrani, Rashed S.

    Since its establishment in 1960, the Institute of Public Administration (IPA) in Riyadh, Saudi Arabia has had responsibility for documenting Saudi administrative literature, the official publications of Saudi Arabia, and the literature of regional and international organizations through establishment of the Document Center in 1961. This paper…

  18. Database Administrator

    ERIC Educational Resources Information Center

    Moore, Pam

    2010-01-01

    The Internet and electronic commerce (e-commerce) generate lots of data. Data must be stored, organized, and managed. Database administrators, or DBAs, work with database software to find ways to do this. They identify user needs, set up computer databases, and test systems. They ensure that systems perform as they should and add people to the…

  19. 48 CFR 204.270 - Electronic Document Access.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 48 Federal Acquisition Regulations System 3 2012-10-01 2012-10-01 false Electronic Document Access..., DEPARTMENT OF DEFENSE GENERAL ADMINISTRATIVE MATTERS Contract Distribution 204.270 Electronic Document Access. Follow the procedures at PGI 204.270 relating to obtaining an account in the Electronic Document...

  20. 48 CFR 204.270 - Electronic Document Access.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 3 2013-10-01 2013-10-01 false Electronic Document Access..., DEPARTMENT OF DEFENSE GENERAL ADMINISTRATIVE MATTERS Contract Distribution 204.270 Electronic Document Access. Follow the procedures at PGI 204.270 relating to obtaining an account in the Electronic Document...

  1. 48 CFR 204.270 - Electronic Document Access.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 3 2014-10-01 2014-10-01 false Electronic Document Access..., DEPARTMENT OF DEFENSE GENERAL ADMINISTRATIVE MATTERS Contract Distribution 204.270 Electronic Document Access. Follow the procedures at PGI 204.270 relating to obtaining an account in the Electronic Document...

  2. 48 CFR 204.270 - Electronic Document Access.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 3 2011-10-01 2011-10-01 false Electronic Document Access..., DEPARTMENT OF DEFENSE GENERAL ADMINISTRATIVE MATTERS Contract Distribution 204.270 Electronic Document Access. Follow the procedures at PGI 204.270 relating to obtaining an account in the Electronic Document...

  3. 48 CFR 204.270 - Electronic Document Access.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ..., DEPARTMENT OF DEFENSE GENERAL ADMINISTRATIVE MATTERS Contract Distribution 204.270 Electronic Document Access. Follow the procedures at PGI 204.270 relating to obtaining an account in the Electronic Document Access... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Electronic Document...

  4. Propagation In Matter Of Currents Of Relativistic Electrons Beyond The Alfven Limit, Produced In Ultra-High-Intensity Short-Pulse Laser-Matter Interactions

    NASA Astrophysics Data System (ADS)

    Batani, D.; Baton, S. D.; Manclossi, M.; Amiranoff, F.; Koenig, M.; Santos, J. J.; Martinolli, E.; Gremillet, L.; Popescu, H.; Antonicci, A.; Rousseaux, C.; Rabec Le Gloahec, M.; Hall, T.; Malka, V.; Cowan, T. E.; Stephens, R.; Key, M.; King, J.; Freeman, R.

    2004-12-01

    This paper reports the results of several experiments performed at the LULI laboratory (Palaiseau, France) concerning the propagation of large relativistic currents in matter from ultra-high-intensity laser pulse interaction with target. We present our results according to the type of diagnostics used in the experiments: 1) Kα emission and Kα imaging, 2) study of target rear side emission in the visible region, 3) time resolved optical shadowgraphy.

  5. Machine-learning prediction of cancer survival: a retrospective study using electronic administrative records and a cancer registry

    PubMed Central

    Gupta, Sunil; Tran, Truyen; Luo, Wei; Phung, Dinh; Kennedy, Richard Lee; Broad, Adam; Campbell, David; Kipp, David; Singh, Madhu; Khasraw, Mustafa; Matheson, Leigh; Ashley, David M; Venkatesh, Svetha

    2014-01-01

    Objectives Using the prediction of cancer outcome as a model, we have tested the hypothesis that through analysing routinely collected digital data contained in an electronic administrative record (EAR), using machine-learning techniques, we could enhance conventional methods in predicting clinical outcomes. Setting A regional cancer centre in Australia. Participants Disease-specific data from a purpose-built cancer registry (Evaluation of Cancer Outcomes (ECO)) from 869 patients were used to predict survival at 6, 12 and 24 months. The model was validated with data from a further 94 patients, and results compared to the assessment of five specialist oncologists. Machine-learning prediction using ECO data was compared with that using EAR and a model combining ECO and EAR data. Primary and secondary outcome measures Survival prediction accuracy in terms of the area under the receiver operating characteristic curve (AUC). Results The ECO model yielded AUCs of 0.87 (95% CI 0.848 to 0.890) at 6 months, 0.796 (95% CI 0.774 to 0.823) at 12 months and 0.764 (95% CI 0.737 to 0.789) at 24 months. Each was slightly better than the performance of the clinician panel. The model performed consistently across a range of cancers, including rare cancers. Combining ECO and EAR data yielded better prediction than the ECO-based model (AUCs ranging from 0.757 to 0.997 for 6 months, AUCs from 0.689 to 0.988 for 12 months and AUCs from 0.713 to 0.973 for 24 months). The best prediction was for genitourinary, head and neck, lung, skin, and upper gastrointestinal tumours. Conclusions Machine learning applied to information from a disease-specific (cancer) database and the EAR can be used to predict clinical outcomes. Importantly, the approach described made use of digital data that is already routinely collected but underexploited by clinical health systems. PMID:24643167

  6. Cocaine-induced loss of white matter proteins in the adult mouse nucleus accumbens is attenuated by administration of a β-lactam antibiotic during cocaine withdrawal.

    PubMed

    Kovalevich, Jane; Corley, Gladys; Yen, William; Rawls, Scott M; Langford, Dianne

    2012-12-01

    We report significantly decreased white matter protein levels in the nucleus accumbens in an adult mouse model of chronic cocaine abuse. Previous studies from human cocaine abuse patients show disruption of white matter and myelin loss, thus supporting our observations. Understanding the neuropathological mechanisms for white matter disruption in cocaine abuse patients is complicated by polydrug use and other comorbid factors, hindering the development of effective therapeutic strategies to ameliorate damage or compliment rehabilitation programs. In this context, our data further demonstrate that cocaine-induced loss of white matter proteins is absent in mice treated with the β-lactam antibiotic, ceftriaxone, during cocaine withdrawal. Other studies report that ceftriaxone, a glutamate transporter subtype-1 activator, is neuroprotective in murine models of multiple sclerosis, thereby demonstrating potential therapeutic properties for diseases with white matter loss. Cocaine-induced white matter abnormalities likely contribute to the cognitive, motor, and psychological deficits commonly afflicting cocaine abusers, yet the underlying mechanisms responsible for these changes remain unknown. Our observations describe an adult animal model for the study of cocaine-induced myelin loss for the first time, and highlight a potential pharmacological intervention to ameliorate cocaine-induced white matter loss. PMID:23031254

  7. Cocaine-Induced Loss of White Matter Proteins in the Adult Mouse Nucleus Accumbens Is Attenuated by Administration of a β-Lactam Antibiotic during Cocaine Withdrawal

    PubMed Central

    Kovalevich, Jane; Corley, Gladys; Yen, William; Rawls, Scott M.; Langford, Dianne

    2013-01-01

    We report significantly decreased white matter protein levels in the nucleus accumbens in an adult mouse model of chronic cocaine abuse. Previous studies from human cocaine abuse patients show disruption of white matter and myelin loss, thus supporting our observations. Understanding the neuropathological mechanisms for white matter disruption in cocaine abuse patients is complicated by polydrug use and other comorbid factors, hindering the development of effective therapeutic strategies to ameliorate damage or compliment rehabilitation programs. In this context, our data further demonstrate that cocaine-induced loss of white matter proteins is absent in mice treated with the β-lactam antibiotic, ceftriaxone, during cocaine withdrawal. Other studies report that ceftriaxone, a glutamate transporter subtype-1 activator, is neuroprotective in murine models of multiple sclerosis, thereby demonstrating potential therapeutic properties for diseases with white matter loss. Cocaine-induced white matter abnormalities likely contribute to the cognitive, motor, and psychological deficits commonly afflicting cocaine abusers, yet the underlying mechanisms responsible for these changes remain unknown. Our observations describe an adult animal model for the study of cocaine-induced myelin loss for the first time, and highlight a potential pharmacological intervention to ameliorate cocaine-induced white matter loss. PMID:23031254

  8. Real-Time Cell-Electronic Sensing of Coal Fly Ash Particulate Matter for Toxicity-Based Air Quality Monitoring.

    PubMed

    Moe, Birget; Yuan, Chungang; Li, Jinhua; Du, Haiying; Gabos, Stephan; Le, X Chris; Li, Xing-Fang

    2016-06-20

    The development of a unique bioassay for cytotoxicity analysis of coal fly ash (CFA) particulate matter (PM) and its potential application for air quality monitoring is described. Using human cell lines, A549 and SK-MES-1, as live probes on microelectrode-embedded 96-well sensors, impedance changes over time are measured as cells are treated with varying concentrations (1 μg/mL-20 mg/mL) of CFA samples. A dose-dependent impedance change is determined for each CFA sample, from which an IC50 histogram is obtained. The assay was successfully applied to examine CFA samples collected from three coal-fired power plants (CFPs) in China. The samples were separated into three size fractions: PM2.5 (<2.5 μm), PM10-2.5 (2.5 μm < x < 10 μm), and PM10 (>10 μm). Dynamic cell-response profiles and temporal IC50 histograms of all samples show that CFA cytotoxicity depends on concentration, exposure time (0-60 h), and cell-type (SK-MES-1 > A549). The IC50 values differentiate the cytotoxicity of CFA samples based on size fraction (PM2.5 ≈ PM10-2.5 ≫ PM10) and the sampling location (CFP2 > CFP1 ≈ CFP3). Differential cytotoxicity measurements of particulates in human cell lines using cell-electronic sensing provide a useful tool for toxicity-based air quality monitoring and risk assessment. PMID:27124590

  9. Nuclear Thermal Motion Driven Adiabatic Electron States Thermalization and the Induced Phase Transition From Insulator To Metal in Warm Dense Matters

    NASA Astrophysics Data System (ADS)

    Kang, Dongdong; Hou, Yong; Gao, Cheng; Zeng, Jiaolong; Yuan, Jianmin

    2016-05-01

    In warm dense matter(WDM), the thermal motion energy of a nucleus may be comparable to its coupling energy with the neighbor nuclei and comparable to the valence electronic orbital motion energy. As the much small mass of electrons, the fluctuations of the electron orbitals are almost adiabatic dynamical changes with nuclear motion. The electronic and nuclear structure of warm and dense He and Ar are simulated by using the density functional based molecular dynamics method. The nuclear thermal motion driven adiabatic thermalization of the electron states, depression of the energy band gap and even phase transitions of electron states from insulator to metal are predicted when the nuclear thermal motion energy is comparable to the coupling energy between the neighboring atoms as well as to the valence electronic orbital motion energy. These kind of nuclear thermal motion driven adiabatic electronic states from insulator to metal phase transition occurs at much lower temperatures than the normal thermal collision excitation in low density and high temperature gases.

  10. A study of the quality and effectiveness of the Airway Science Electronic Systems program to meet the workforce needs of the Federal Aviation Administration

    NASA Astrophysics Data System (ADS)

    Hedge, Clarence Alvin

    1999-11-01

    Scope and method of study. The purpose of the study was to determine the quality and effectiveness of the Airway Science Electronics Systems program to meet the workforce needs of the Federal Aviation Administration (FAA). The study was to research traditional FAA hired electronics technicians and Airway Science degree graduate electronics technicians. More specially, the study sought (1) to compare the traditional electronics training course requirements to the Airway Science curriculum course requirements, (2) to examine the ratio of Airway Science Electronics Systems graduates to graduates of other Airway Science options and also related electronics training and (3) to determine strengths and weaknesses in the Airway Science Electronics System. Findings and conclusions. The data were obtained by questionnaires sent to (1) the 61 recognized Airway Science Institutions, (2) personal interviews with department chairmen who are members of the Oklahoma City Aviation Aerospace Alliance and (3) personal interviews were also conducted with Electronics Technicians and supervisors at the Mike Monroney Aeronautical Center, Oklahoma City, Oklahoma. It was found that the present area of airway science curriculum encompasses Airway Science Management, Airway Computer Science, Airway Electronics Systems, Aviation Maintenance Management and Aircraft Systems Management. Programs in airway science are designed specifically to help prepare individuals for meeting the requirements for a strong educational background for tomorrow's aviation leaders. The data indicated that the majority of airway science students pursue careers with the FAA but also find even greater opportunities in industry. The data also shows that in the surveyed schools with approved airway science programs, Airway Science Management was the most frequent offered program.

  11. Experimental evidence of electric inhibition in fast electron penetration and of electric-field-limited fast electron transport in dense matter

    PubMed

    Pisani; Bernardinello; Batani; Antonicci; Martinolli; Koenig; Gremillet; Amiranoff; Baton; Davies; Hall; Scott; Norreys; Djaoui; Rousseaux; Fews; Bandulet; Pepin

    2000-11-01

    Fast electron generation and propagation were studied in the interaction of a green laser with solids. The experiment, carried out with the LULI TW laser (350 fs, 15 J), used K(alpha) emission from buried fluorescent layers to measure electron transport. Results for conductors (Al) and insulators (plastic) are compared with simulations: in plastic, inhibition in the propagation of fast electrons is observed, due to electric fields which become the dominant factor in electron transport. PMID:11102017

  12. Electron-ion and ion-ion potentials for modeling warm dense matter: Applications to laser-heated or shock-compressed Al and Si.

    PubMed

    Dharma-wardana, M W C

    2012-09-01

    The pair interactions Uij(r) determine the thermodynamics and linear transport properties of matter via the pair-distribution functions (PDFs), i.e., gij(r). Great simplicity is achieved if Uij(r) could be directly used to predict material properties via classical simulations, avoiding many-body wave functions. Warm dense matter (WDM) is encountered in quasiequilibria where the electron temperature Te differs from the ion temperature Ti, as in laser-heated or in shock-compressed matter. The electron PDFs gee(r) as perturbed by the ions are used to evaluate fully nonlocal exchange-correlation corrections to the free energy, using hydrogen as an example. Electron-ion potentials for ions with a bound core are discussed with Al and Si as examples, for WDM with Te≠Ti, and valid for times shorter than the electron-ion relaxation time. In some cases the potentials develop attractive regions and then become repulsive and "Yukawa-like" for higher Te. These results clarify the origin of initial phonon hardening and rapid release. Pair potentials for shock-heated WDM show that phonon hardening would not occur in most such systems. Defining meaningful quasiequilibrium static transport coefficients consistent with the dynamic values is addressed. There seems to be no meaningful "static conductivity" obtainable by extrapolating experimental or theoretical σ(ω,Ti,Te) to ω→0, unless Ti→Te as well. Illustrative calculations of quasistatic resistivities R(Ti,Te) of laser-heated as well as shock-heated aluminum and silicon are presented using our pseudopotentials, pair potentials, and classical integral equations. The quasistatic resistivities display clear differences in their temperature evolutions, but are not the strict ω→0 limits of the dynamic values. PMID:23031034

  13. Electron-ion and ion-ion potentials for modeling warm dense matter: Applications to laser-heated or shock-compressed Al and Si

    NASA Astrophysics Data System (ADS)

    Dharma-wardana, M. W. C.

    2012-09-01

    The pair interactions Uij(r) determine the thermodynamics and linear transport properties of matter via the pair-distribution functions (PDFs), i.e., gij(r). Great simplicity is achieved if Uij(r) could be directly used to predict material properties via classical simulations, avoiding many-body wave functions. Warm dense matter (WDM) is encountered in quasiequilibria where the electron temperature Te differs from the ion temperature Ti, as in laser-heated or in shock-compressed matter. The electron PDFs gee(r) as perturbed by the ions are used to evaluate fully nonlocal exchange-correlation corrections to the free energy, using hydrogen as an example. Electron-ion potentials for ions with a bound core are discussed with Al and Si as examples, for WDM with Te≠Ti, and valid for times shorter than the electron-ion relaxation time. In some cases the potentials develop attractive regions and then become repulsive and “Yukawa-like” for higher Te. These results clarify the origin of initial phonon hardening and rapid release. Pair potentials for shock-heated WDM show that phonon hardening would not occur in most such systems. Defining meaningful quasiequilibrium static transport coefficients consistent with the dynamic values is addressed. There seems to be no meaningful “static conductivity” obtainable by extrapolating experimental or theoretical σ(ω,Ti,Te) to ω→0, unless Ti→Te as well. Illustrative calculations of quasistatic resistivities R(Ti,Te) of laser-heated as well as shock-heated aluminum and silicon are presented using our pseudopotentials, pair potentials, and classical integral equations. The quasistatic resistivities display clear differences in their temperature evolutions, but are not the strict ω→0 limits of the dynamic values.

  14. SPiRIT-TPC with GET readout electronics for the study of density dependent symmetry energy of high dense matter with Heavy RI collisions

    NASA Astrophysics Data System (ADS)

    Isobe, Tadaaki; SPiRIT Collaboration

    2014-09-01

    The nuclear Equation of State (EoS) is a fundamental property of nuclear matter that describes the relationships between the parameters for a nuclear system, such as energy, density and temperature. An international collaboration, named SPiRIT, to study the nuclear EoS has been formed recently. One of the main devices of experimental setup is a Time Projection Chamber (TPC) which will be installed into the SAMURAI dipole magnet at RIKEN-RIBF. The TPC can measure charged pions, protons and light ions simultaneously in heavy RI collisions, and those will be used as probes to study the asymmetric dense nuclear matter. In addition to the status of the SPiRIT project, testing of SPiRIT-TPC with GET electronics will be presented in this talk. GET, general electronics for TPC, is a project for the development of novel electronics for TPC supported by NSF and ANR. This work is supported in part by the Japan Grant-in-Aide award and the US DOE grant DE-SC0004835 and JUSEIPEN.

  15. High-sensitivity nuclear magnetic resonance at Giga-Pascal pressures: a new tool for probing electronic and chemical properties of condensed matter under extreme conditions.

    PubMed

    Meier, Thomas; Haase, Jürgen

    2014-01-01

    Nuclear Magnetic Resonance (NMR) is one of the most important techniques for the study of condensed matter systems, their chemical structure, and their electronic properties. The application of high pressure enables one to synthesize new materials, but the response of known materials to high pressure is a very useful tool for studying their electronic structure and developing theories. For example, high-pressure synthesis might be at the origin of life; and understanding the behavior of small molecules under extreme pressure will tell us more about fundamental processes in our universe. It is no wonder that there has always been great interest in having NMR available at high pressures. Unfortunately, the desired pressures are often well into the Giga-Pascal (GPa) range and require special anvil cell devices where only very small, secluded volumes are available. This has restricted the use of NMR almost entirely in the past, and only recently, a new approach to high-sensitivity GPa NMR, which has a resonating micro-coil inside the sample chamber, was put forward. This approach enables us to achieve high sensitivity with experiments that bring the power of NMR to Giga-Pascal pressure condensed matter research. First applications, the detection of a topological electronic transition in ordinary aluminum metal and the closing of the pseudo-gap in high-temperature superconductivity, show the power of such an approach. Meanwhile, the range of achievable pressures was increased tremendously with a new generation of anvil cells (up to 10.1 GPa), that fit standard-bore NMR magnets. This approach might become a new, important tool for the investigation of many condensed matter systems, in chemistry, geochemistry, and in physics, since we can now watch structural changes with the eyes of a very versatile probe. PMID:25350694

  16. Quality of Book-Reading Matters for Emergent Readers: An Experiment with the Same Book in Regular or Electronic Format.

    ERIC Educational Resources Information Center

    de Jong, Maria T.; Bus, Adriana G.

    2002-01-01

    An adult read to 12 children from a regular paper book. Twenty-four children explored a similar electronic book. For half of this group, the electronic book was with and for half without restrictions on games. Regular book format was more supportive of learning story content and phrasing; both formats supported internalization of features of…

  17. Free-Electron X-Ray Laser Measurements of Collisional-Damped Plasmons in Isochorically Heated Warm Dense Matter

    NASA Astrophysics Data System (ADS)

    Sperling, P.; Gamboa, E. J.; Lee, H. J.; Chung, H. K.; Galtier, E.; Omarbakiyeva, Y.; Reinholz, H.; Röpke, G.; Zastrau, U.; Hastings, J.; Fletcher, L. B.; Glenzer, S. H.

    2015-09-01

    We present the first highly resolved measurements of the plasmon spectrum in an ultrafast heated solid. Multi-keV x-ray photons from the Linac Coherent Light Source have been focused to one micrometer diameter focal spots producing solid density aluminum plasmas with a known electron density of ne=1.8 ×1023 cm-3 . Detailed balance is observed through the intensity ratio of up- and down-shifted plasmons in x-ray forward scattering spectra measuring the electron temperature. The plasmon damping is treated by electron-ion collision models beyond the Born approximation to determine the electrical conductivity of warm dense aluminum.

  18. The estimations of electron-positron pair's production at the high-intensity laser interactions with matter

    SciTech Connect

    Gryaznykh, D. A.; Kandiev, Y. Z.; Lykov, V. A.

    1997-04-15

    The processes of electron-positron pairs generation induced by laser radiation of 10{sup 18}-10{sup 20} W/cm{sup 2} are studied. The results of pairs production in Coulomb field of nucleus by relativistic electrons are presented. The estimations of positrons generation and yield from targets considering production from electrons and bremsstrahlung photons are made. The PRIZMA-code simulations performed using Monte-Carlo method confirm the estimations. The positrons yield of 10{sup 8}-10{sup 10} from high-Z targets irradiated by picosecond lasers of power 10{sup 2}-10{sup 3} TW is found to be possible.

  19. Use of an Electronic Medication Administration Record (eMAR) for Surveillance of Medication Omissions: Results of a One Year Study of Antimicrobials in the Inpatient Setting

    PubMed Central

    Dalton, Bruce R.; Sabuda, Deana M.; Bresee, Lauren C.; Conly, John M.

    2015-01-01

    Introduction Medication administration omissions (MAO) are usually considered medication errors but not all MAO are clinically relevant. We determined the frequency of clinically relevant MAO of antimicrobial drugs in adult hospitals in Calgary, Alberta, Canada based on electronic medication administration record (eMAR). Methods We examined 2011 data from eMAR records on medical wards and developed a reproducible assessment scheme to categorize and determine clinical relevance of MAO. We applied this scheme to records from 2012 in a retrospective cohort study to quantify clinically relevant MAO. Significant predictors of clinically relevant MAO were identified. Results A total of 294,718 dose records were assessed of which 10,282 (3.49%) were for doses not administered. Among these 4903 (1.66% of total); 47.68% of MAO were considered clinically relevant. Significant positive predictors of clinically relevant MAO included inhaled (OR 4.90, 95% CI 3.54-6.94) and liquid oral (OR 1.32, 95% CI 1.18-1.47) route of medication compared to solid oral and irregular dose schedules. Evening nursing shift compared to night shift (OR 0.77 95% CI 0.70-0.85) and parenteral (OR 0.50, 95% CI 0.46-0.54) were negative predictors, The commonest reasons for relevant MAO were patient preference, unspecified reason, administration access issues, drug not available or patient condition. Conclusion Assessment of MAO by review of computer records provides a greater scope and sample size than directly observed medication administration assessments without “observer” effect. We found that MAO of antimicrobials in inpatients were uncommon but were seen more frequently with orally administered antimicrobials which may have significance to antimicrobial stewardship initiatives. PMID:25856373

  20. Wait times to rheumatology care for patients with rheumatic diseases: a data linkage study of primary care electronic medical records and administrative data

    PubMed Central

    Widdifield, Jessica; Bernatsky, Sasha; Thorne, J. Carter; Bombardier, Claire; Jaakkimainen, R. Liisa; Wing, Laura; Paterson, J. Michael; Ivers, Noah; Butt, Debra; Lyddiatt, Anne; Hofstetter, Catherine; Ahluwalia, Vandana; Tu, Karen

    2016-01-01

    Background: The Wait Time Alliance recently established wait time benchmarks for rheumatology consultations in Canada. Our aim was to quantify wait times to primary and rheumatology care for patients with rheumatic diseases. Methods: We identified patients from primary care practices in the Electronic Medical Record Administrative data Linked Database who had referrals to Ontario rheumatologists over the period 2000-2013. To assess the full care pathway, we identified dates of symptom onset, presentation in primary care and referral from electronic medical records. Dates of rheumatologist consultations were obtained by linking with physician service claims. We determined the duration of each phase of the care pathway (symptom onset to primary care encounter, primary care encounter to referral, and referral to rheumatologist consultation) and compared them with established benchmarks. Results: Among 2430 referrals from 168 family physicians, 2015 patients (82.9%) were seen by 146 rheumatologists within 1 year of referral. Of the 2430 referrals, 2417 (99.5%) occurred between 2005 and 2013. The main reasons for referral were osteoarthritis (32.4%) and systemic inflammatory rheumatic diseases (30.6%). Wait times varied by diagnosis and geographic region. Overall, the median wait time from referral to rheumatologist consultation was 74 (interquartile range 27-101) days; it was 66 (interquartile range 18-84) days for systemic inflammatory rheumatic diseases. Wait time benchmarks were not achieved, even for the most urgent types of referral. For systemic inflammatory rheumatic diseases, most of the delays occurred before referral. Interpretation: Rheumatology wait times exceeded established benchmarks. Targeted efforts are needed to promote more timely access to both primary and rheumatology care. Routine linkage of electronic medical records with administrative data may help fill important gaps in knowledge about waits to primary and specialty care. PMID:27398365

  1. Prospects for the diagnosis of electron-ion temperature equilibration rates of warm dense matter by ultra-short pulse hard X-ray diffraction with an X-ray free electron laser

    NASA Astrophysics Data System (ADS)

    Angulo Gareta, J. J.; Riley, D.

    2006-10-01

    Ultra-short pulse kiloelectronvolt X-ray diffraction with an X-ray free electron laser and its potential for the diagnosis of electron-ion equilibration rates of warm dense matter are evaluated. A simple experimental configuration is suggested for the generation and subsequent probing of warm dense aluminium with the TESLA X-ray free electron laser. Differential scattering cross-sections are computed in an approximate manner with Thomas-Fermi form factors and tabular ion-ion static structure factors of one-component plasmas, inclusive of electron screening and degeneracy. This requires simulation of the sample, for which we use a hydrodynamic code featuring the Sesame equation of state, Thomas-Fermi ionisation and cold solid opacities (for the calculation of energy deposition). The effect of electron-ion equilibration rate on the evolution of the diffraction pattern on a picosecond time-scale is investigated. Finally, the signal level expected from experiment is estimated, indicating that measurements with good angular-resolution are possible.

  2. Optical shadowgraphy and proton imaging as diagnostics tools for fast electron propagation in ultrahigh-intensity laser-matter interaction

    NASA Astrophysics Data System (ADS)

    Manclossi, M.; Batani, D.; Piazza, D.; Baton, S.; Amiranoff, F.; Koenig, M.; Popescu, H.; Audebert, P.; Santos, J. J.; Martinolli, E.; Benuzzi-Mounaix, A.; Le Gloahec, M. R.; Antonicci, A.; Rousseaux, C.; Borghesi, M.; Cecchetti, C.; Malka, V.; Hall, T.

    2005-10-01

    This paper reports the results of some recent experiments performed at the LULI laboratory (Palaiseau, France) concerning the propagation of large relativistic electron currents in a gas jet. We present our experimental results according to the type of diagnostics used in the experiments: (1) time resolved optical shadowgraphy and (2) proton imaging. Proton radiography images did show the presence of very strong fields in the gas probably produced by charge separation. In turn, these imply a slowing down of the fast electron cloud as it penetrates in the gas. Indeed, shadowgraphy images show a strong inhibition of propagation and a strong reduction in time of the velocity of the electron cloud from the initial value, which is of the order of a fraction of c.

  3. ANTHEM: a two-dimensional multicomponent self-consistent hydro-electron transport code for laser-matter interaction studies

    SciTech Connect

    Mason, R.J.

    1982-01-01

    The ANTHEM code for the study of CO/sub 2/-laser-generated transport is outlined. ANTHEM treats the background plasma as coupled Eulerian thermal and ion fluids, and the suprathermal electrons as either a third fluid or a body of evolving collisional PIC particles. The electrons scatter off the ions; the suprathermals drag against the thermal background. Self-consistent E- and B-fields are computed by the Implicit Moment Method. The current status of the code is described. Typical output from ANTHEM is discussed with special application to Augmented-Return-Current CO/sub 2/-laser-driven targets.

  4. 76 FR 54496 - In the Matter of Certain Electronic Devices Having a Digital Television Receiver and Components...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-01

    ..., SW., Washington, DC 20436, telephone (202) 708-2310. Copies of non- confidential documents filed in... instituted this investigation on June 6, 2011, based on a complaint filed by Zenith Electronics LLC of Lincolnshire, Illinois. 76 FR. 32373-74. The complaint alleges violations of section 337 of the Tariff Act...

  5. Oral Administration of Electron-Beam Inactivated Rhodococcus equi Failed to Protect Foals against Intrabronchial Infection with Live, Virulent R. equi

    PubMed Central

    Rocha, Joana N.; Cohen, Noah D.; Bordin, Angela I.; Brake, Courtney N.; Giguère, Steeve; Coleman, Michelle C.; Alaniz, Robert C.; Lawhon, Sara D.; Mwangi, Waithaka; Pillai, Suresh D.

    2016-01-01

    There is currently no licensed vaccine that protects foals against Rhodococcus equi–induced pneumonia. Oral administration of live, virulent R. equi to neonatal foals has been demonstrated to protect against subsequent intrabronchial challenge with virulent R. equi. Electron beam (eBeam)-inactivated R. equi are structurally intact and have been demonstrated to be immunogenic when administered orally to neonatal foals. Thus, we investigated whether eBeam inactivated R. equi could protect foals against developing pneumonia after experimental infection with live, virulent R. equi. Foals (n = 8) were vaccinated by gavaging with eBeam-inactivated R. equi at ages 2, 7, and 14 days, or gavaged with equal volume of saline solution (n = 4), and subsequently infected intrabronchially with live, virulent R. equi at age 21 days. The proportion of vaccinated foals that developed pneumonia following challenge was similar among the vaccinated (7/8; 88%) and unvaccinated foals (3/4; 75%). This vaccination regimen did not appear to be strongly immunogenic in foals. Alternative dosing regimens or routes of administration need further investigation and may prove to be immunogenic and protective. PMID:26828865

  6. Oral Administration of Electron-Beam Inactivated Rhodococcus equi Failed to Protect Foals against Intrabronchial Infection with Live, Virulent R. equi.

    PubMed

    Rocha, Joana N; Cohen, Noah D; Bordin, Angela I; Brake, Courtney N; Giguère, Steeve; Coleman, Michelle C; Alaniz, Robert C; Lawhon, Sara D; Mwangi, Waithaka; Pillai, Suresh D

    2016-01-01

    There is currently no licensed vaccine that protects foals against Rhodococcus equi-induced pneumonia. Oral administration of live, virulent R. equi to neonatal foals has been demonstrated to protect against subsequent intrabronchial challenge with virulent R. equi. Electron beam (eBeam)-inactivated R. equi are structurally intact and have been demonstrated to be immunogenic when administered orally to neonatal foals. Thus, we investigated whether eBeam inactivated R. equi could protect foals against developing pneumonia after experimental infection with live, virulent R. equi. Foals (n = 8) were vaccinated by gavaging with eBeam-inactivated R. equi at ages 2, 7, and 14 days, or gavaged with equal volume of saline solution (n = 4), and subsequently infected intrabronchially with live, virulent R. equi at age 21 days. The proportion of vaccinated foals that developed pneumonia following challenge was similar among the vaccinated (7/8; 88%) and unvaccinated foals (3/4; 75%). This vaccination regimen did not appear to be strongly immunogenic in foals. Alternative dosing regimens or routes of administration need further investigation and may prove to be immunogenic and protective. PMID:26828865

  7. Fitting the Fermi-LAT GeV excess: On the importance of including the propagation of electrons from dark matter

    NASA Astrophysics Data System (ADS)

    Lacroix, Thomas; BÅ`hm, Céline; Silk, Joseph

    2014-08-01

    An excess of gamma rays at GeV energies has been pointed out in the Fermi-LAT data. This signal comes from a narrow region centred around the Galactic center and has been interpreted as possible evidence for light dark matter particles annihilating either into a mixture of leptons-antileptons and bb ¯ or into bb ¯ only. Focusing on the prompt gamma-ray emission, previous works found that the best fit to the data corresponds to annihilations proceeding predominantly into bb ¯. However, here we show that omitting the photon emission originating from primary and secondary electrons produced in dark matter annihilations, and undergoing diffusion through the Galactic magnetic field, can actually lead to the wrong conclusion. Accounting for this emission, we find that not only are annihilations of ˜10 GeV particles into a purely leptonic final state allowed, but the democratic scenario actually provides a better fit to the spectrum of the excess than the pure bb ¯ channel. We conclude our work with a discussion on constraints on these leptophilic scenarios based on the AMS data and the morphology of the excess.

  8. 13C Nuclear Magnetic Resonance and Electron Paramagnetic Spectroscopic Comparison of Hydrophobic Acid, Transphilic Acid, and Reverse Osmosis May 2012 Isolates of Organic Matter from the Suwannee River

    PubMed Central

    Nwosu, Ugwumsinachi G.; Cook, Robert L.

    2015-01-01

    Abstract Dissolved organic matter (DOM) is found in most natural waters at concentrations low enough to make DOM isolation methodologies critical to full analytical characterization and preservation. During the last few decades, two major protocols have been developed for the extraction of DOM isolates from natural waters. These methods utilize XAD resins and reverse osmosis (RO). In this work, the hydrophobic acid (May 2012 HPOA) and transphilic acid (May 2012 TPIA) isolates from XAD-8 and XAD-4 resins, respectively, were compared with the RO (May 2012 RO) natural organic matter isolate of the Suwannee River water using 13C nuclear magnetic resonance (NMR) and electron paramagnetic resonance (EPR) spectroscopies. 13C NMR analysis showed that the May 2012 RO isolate could be viewed as a hybrid of the more hydrophobic May 2012 HPOA isolate and more hydrophilic May 2012 TPIA isolate. The May 2012 HPOA isolate is shown to be higher in alkyl and aromatic moieties, while the May 2012 TPIA isolate is higher in O-alkyl moieties. EPR analysis revealed that the May 2012 TPIA and, in particular, May 2012 HPOA isolates had higher radical concentrations than the May 2012 RO isolate. It is postulated that some of the radical concentrations came from the use of base during the isolation procedures, especially in the XAD method. PMID:25565761

  9. Suprathermal electrons in kJ-laser produced plasmas: M- shell resolved high-resolution x-ray spectroscopic study of transient matter evolution

    NASA Astrophysics Data System (ADS)

    Condamine, F. P.; Šmíd, M.; Renner, O.; Dozières, M.; Thais, F.; Angelo, P.; Bobin, J.-L.; Rosmej, F. B.

    2016-05-01

    Hot electrons are of key importance to understand many physical processes in plasma physics. They impact strongly on atomic physics as almost all radiative properties are seriously modified. X-ray spectroscopy is of particular interest due to reduced photoabsorption in dense matter. We report on a study of the copper Kα X-ray emission conducted at the ns, kJ laser facility PALS, Prague, Czech Republic. Thin copper foils have been irradiated with 1ω pulses. Two spherically bent quartz Bragg crystal spectrometers with high spectral and spatial resolution have been set up simultaneously to achieve a high level of confidence in the spectral distribution. In particular, an emission on the red wing of the Kα2 transition (λ = 1.5444 Å) could be identified with complex atomic structure calculations. We discuss possible implications for the analysis of non-equilibrium phenomena and present first atomic physics simulations.

  10. Laser-to-hot-electron conversion limitations in relativistic laser matter interactions due to multi-picosecond dynamics

    SciTech Connect

    Schollmeier, M.; Sefkow, A. B.; Geissel, M.; Kimmel, M. W.; Rambo, P. K.; Schwarz, J.; Arefiev, A. V.; Flippo, K. A.; Johnson, R. P.; Shimada, T.; Gaillard, S. A.; Offermann, D. T.

    2015-04-15

    High-energy short-pulse lasers are pushing the limits of plasma-based particle acceleration, x-ray generation, and high-harmonic generation by creating strong electromagnetic fields at the laser focus where electrons are being accelerated to relativistic velocities. Understanding the relativistic electron dynamics is key for an accurate interpretation of measurements. We present a unified and self-consistent modeling approach in quantitative agreement with measurements and differing trends across multiple target types acquired from two separate laser systems, which differ only in their nanosecond to picosecond-scale rising edge. Insights from high-fidelity modeling of laser-plasma interaction demonstrate that the ps-scale, orders of magnitude weaker rising edge of the main pulse measurably alters target evolution and relativistic electron generation compared to idealized pulse shapes. This can lead for instance to the experimentally observed difference between 45 MeV and 75 MeV maximum energy protons for two nominally identical laser shots, due to ps-scale prepulse variations. Our results show that the realistic inclusion of temporal laser pulse profiles in modeling efforts is required if predictive capability and extrapolation are sought for future target and laser designs or for other relativistic laser ion acceleration schemes.

  11. Laser-to-hot-electron conversion limitations in relativistic laser matter interactions due to multi-picosecond dynamics

    SciTech Connect

    Schollmeier, Marius; Sefkow, Adam B.; Geissel, Matthias; Arefiev, Alexey V.; Flippo, Kirk A.; Gaillard, Sandrine A.; Johnson, Randy P.; Kimmel, Mark W.; Offermann, Dustin T.; Rambo, Patrick K.; Schwarz, Jens; Shimada, Tom

    2015-04-20

    High-energy short-pulse lasers are pushing the limits of plasma-based particle acceleration, x-ray generation, and high-harmonic generation by creating strong electromagnetic fields at the laser focus where electrons are being accelerated to relativistic velocities. Understanding the relativistic electron dynamics is key for an accurate interpretation of measurements. We present a unified and self-consistent modeling approach in quantitative agreement with measurements and differing trends across multiple target types acquired from two separate laser systems, which differ only in their nanosecond to picosecond-scale rising edge. Insights from high-fidelity modeling of laser-plasma interaction demonstrate that the ps-scale, orders of magnitude weaker rising edge of the main pulse measurably alters target evolution and relativistic electron generation compared to idealized pulse shapes. This can lead for instance to the experimentally observed difference between 45 MeV and 75 MeV maximum energy protons for two nominally identical laser shots, due to ps-scale prepulse variations. Our results indicate that the realistic inclusion of temporal laser pulse profiles in modeling efforts is required if predictive capability and extrapolation are sought for future target and laser designs or for other relativistic laser ion acceleration schemes.

  12. Laser-to-hot-electron conversion limitations in relativistic laser matter interactions due to multi-picosecond dynamics

    DOE PAGESBeta

    Schollmeier, Marius; Sefkow, Adam B.; Geissel, Matthias; Arefiev, Alexey V.; Flippo, Kirk A.; Gaillard, Sandrine A.; Johnson, Randy P.; Kimmel, Mark W.; Offermann, Dustin T.; Rambo, Patrick K.; et al

    2015-04-20

    High-energy short-pulse lasers are pushing the limits of plasma-based particle acceleration, x-ray generation, and high-harmonic generation by creating strong electromagnetic fields at the laser focus where electrons are being accelerated to relativistic velocities. Understanding the relativistic electron dynamics is key for an accurate interpretation of measurements. We present a unified and self-consistent modeling approach in quantitative agreement with measurements and differing trends across multiple target types acquired from two separate laser systems, which differ only in their nanosecond to picosecond-scale rising edge. Insights from high-fidelity modeling of laser-plasma interaction demonstrate that the ps-scale, orders of magnitude weaker rising edge ofmore » the main pulse measurably alters target evolution and relativistic electron generation compared to idealized pulse shapes. This can lead for instance to the experimentally observed difference between 45 MeV and 75 MeV maximum energy protons for two nominally identical laser shots, due to ps-scale prepulse variations. Our results indicate that the realistic inclusion of temporal laser pulse profiles in modeling efforts is required if predictive capability and extrapolation are sought for future target and laser designs or for other relativistic laser ion acceleration schemes.« less

  13. CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES: Synthesis and electrical characterization of tungsten oxide nanowires

    NASA Astrophysics Data System (ADS)

    Huang, Rui; Zhu, Jing; Yu, Rong

    2009-07-01

    Tungsten oxide nanowires of diameters ranging from 7 to 200 nm are prepared on a tungsten rod substrate by using the chemical vapour deposition (CVD) method with vapour-solid (VS) mechanism. Tin powders are used to control oxygen concentration in the furnace, thereby assisting the growth of the tungsten oxide nanowires. The grown tungsten oxide nanowires are determined to be of crystalline W18O49. I-V curves are measured by an in situ transmission electron microscope (TEM) to investigate the electrical properties of the nanowires. All of the I-V curves observed are symmetric, which reveals that the tungsten oxide nanowires are semiconducting. Quantitative analyses of the experimental I-V curves by using a metal-semiconductor-metal (MSM) model give some intrinsic parameters of the tungsten oxide nanowires, such as the carrier concentration, the carrier mobility and the conductivity.

  14. CONSTRAINTS ON THE MINIMUM ELECTRON LORENTZ FACTOR AND MATTER CONTENT OF JETS FOR A SAMPLE OF BRIGHT FERMI BLAZARS

    SciTech Connect

    Kang, Shi-Ju; Wu, Qingwen; Chen, Liang

    2014-11-01

    We fit (quasi-)simultaneous multi-waveband spectral energy distributions for a sample of low-synchrotron-peaked (LSP) blazars with a one-zone leptonic model. The seed photons that predominantly come from the broad line region (BLR) and infrared (IR) molecular torus are considered in the context of an external Compton process. We find that modeling with IR seed photons is systematically better than that with BLR photons based on a χ{sup 2} test, which suggests that γ-ray-emitting regions are most likely found outside the BLR. The minimum electron Lorentz factor, γ{sub min}, is constrained from the modeling of these LSP blazars with good soft X-ray data (ranging from 5 to 160 with a median value of 55), which plays a key role in jet power estimation. Assuming a one-to-one ratio of protons to electrons, we find that the jet power for LSP blazars is systematically higher than that of FR II radio galaxies at a 151 MHz radio luminosity, L {sub 151} {sub MHz} even though FR IIs are regarded as the same as LSP blazars in a unification scheme except at the jet viewing angle. A possible reason for this is that there are some e {sup ±} pairs in the jets of these blazars. If this is the case, we find that the number density of e {sup ±} pairs should be several times higher than that of e {sup –}-p pairs by assuming the jet power is the same for LSP blazars and FR IIs at the given L {sub 151} {sub MHz}.

  15. School Business Administration.

    ERIC Educational Resources Information Center

    Jordan, K. Forbis; Webb, L. Dean

    1986-01-01

    Reviews the societal and organizational changes affecting school business administration, describes major activities encompassed in the practice of school business administration, and reviews current literature specifically related to such activities as electronic data processing, fiscal planning and budgeting, purchasing and property management,…

  16. Head of Administration

    NASA Astrophysics Data System (ADS)

    2005-03-01

    Purpose and scope of the position: The main task is to provide efficient administrative services and advice to the Director General, Division Leaders and to staff members in the scientific and technical areas in the fields of financial planning and accounting, personnel management, purchasing, legal and contractual matters, information systems and building and site maintenance. As a member of the ESO Management the Head of Administration contributes essentially to the development of the overall policy, strategic planning, relations to the members of the personnel and maintains professional contacts at highest level outside the Organisation. ESO employs in total approximately 650 staff members and the Administration Division comprises the Administration at the Headquarters in Garching near Munich and the Administration in Santiago (Chile). The successful candidate will be supported by some 50 qualified staff members.

  17. 7 CFR 201.51 - Inert matter.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 3 2011-01-01 2011-01-01 false Inert matter. 201.51 Section 201.51 Agriculture... REGULATIONS Purity Analysis in the Administration of the Act § 201.51 Inert matter. Inert matter shall include.... Also included as inert matter are separated cotyledons of legumes, irrespective of whether or not...

  18. 7 CFR 201.51 - Inert matter.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 3 2012-01-01 2012-01-01 false Inert matter. 201.51 Section 201.51 Agriculture... REGULATIONS Purity Analysis in the Administration of the Act § 201.51 Inert matter. Inert matter shall include.... Also included as inert matter are separated cotyledons of legumes, irrespective of whether or not...

  19. 7 CFR 201.51 - Inert matter.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 3 2014-01-01 2014-01-01 false Inert matter. 201.51 Section 201.51 Agriculture... REGULATIONS Purity Analysis in the Administration of the Act § 201.51 Inert matter. Inert matter shall include.... Also included as inert matter are separated cotyledons of legumes, irrespective of whether or not...

  20. 7 CFR 201.51 - Inert matter.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 3 2013-01-01 2013-01-01 false Inert matter. 201.51 Section 201.51 Agriculture... REGULATIONS Purity Analysis in the Administration of the Act § 201.51 Inert matter. Inert matter shall include.... Also included as inert matter are separated cotyledons of legumes, irrespective of whether or not...

  1. Electron paramagnetic resonance study of the generation of reactive oxygen species catalysed by transition metals and quinoid redox cycling by inhalable ambient particulate matter.

    PubMed

    Valavanidis, A; Fiotakis, K; Bakeas, E; Vlahogianni, T

    2005-01-01

    A range of epidemiological studies in the 1990s showed that exposure to ambient particulate matter (PM) is associated with adverse health effects in the respiratory system and increased morbidity and mortality rates. Oxidative stress has emerged as a pivotal mechanism that underlies the toxic pulmonary effects of PM. A key question from a variety of studies was whether the adverse health effects of PM are mediated by the carbonaceous particles of their reactive chemical compounds adsorbed into the particles. Experimental evidence showed that PM contains redox-active transition metals, redox cycling quinoids and polycyclic aromatic hydrocarbons (PAHs) which act synergistically to produce reactive oxygen species (ROS). Fine PM has the ability to penetrate deep into the respiratory tree where it overcomes the antioxidant defences in the fluid lining of the lungs by the oxidative action of ROS. From a previous study [Valavanidis A, Salika A, Theodoropoulou A. Generation of hydroxyl radicals by urban suspended particulate air matter. The role of iron ions. Atmospher Environ 2000; 34 : 2379-2386], we established that ferrous ions in PM play an important role in the generation of hydroxyl radicals in the presence of hydrogen peroxide (H2O2). In the present study, we investigated the synergistic effect of transition metals and persistent quinoid and semiquinone radicals for the generation of ROS without the presence of H2O2. We experimented with airborne particulate matter, such as TSPs (total suspended particulates), fresh automobile exhaust particles (diesel, DEP and gasoline, GEP) and fresh wood smoke soot. Using electron paramagnetic resonance (EPR), we examined the quantities of persistent free radicals, characteristic of a mixture of quinoid radicals with different structures and a carbonaceous core of carbon-centred radicals. We extracted, separated and analysed the quinoid compounds by EPR at alkaline solution (pH 9.5) and by TLC. Also, we studied the direct

  2. Tissue oxygen is reduced in white matter of spontaneously hypertensive-stroke prone rats: a longitudinal study with electron paramagnetic resonance.

    PubMed

    Weaver, John; Jalal, Fakhreya Y; Yang, Yi; Thompson, Jeffrey; Rosenberg, Gary A; Liu, Ke J

    2014-05-01

    Small vessel disease is associated with white-matter (WM) magnetic resonance imaging (MRI) hyperintensities (WMHs) in patients with vascular cognitive impairment (VCI) and subsequent damage to the WM. Although WM is vulnerable to hypoxic-ischemic injury and O₂ is critical in brain physiology, tissue O₂ level in the WM has not been measured and explored in vivo. We hypothesized that spontaneously hypertensive stroke-prone rat (SHR/SP) fed a Japanese permissive diet (JPD) and subjected to unilateral carotid artery occlusion (UCAO), a model to study VCI, would lead to reduced tissue oxygen (pO₂) in the deep WM. We tested this hypothesis by monitoring WM tissue pO₂ using in vivo electron paramagnetic resonance (EPR) oximetry in SHR/SP rats over weeks before and after JPD/UCAO. The SHR/SP rats experienced an increase in WM pO₂ from 9 to 12 weeks with a maximal 32% increase at week 12, followed by a dramatic decrease in WM pO₂ to near hypoxic conditions during weeks 13 to 16 after JPD/UCAO. The decreased WM pO₂ was accompanied with WM damage and hemorrhages surrounding microvessels. Our findings suggest that changes in WM pO₂ may contribute to WM damage in SHR/SP rat model, and that EPR oximetry can monitor brain pO₂ in the WM of small animals. PMID:24549186

  3. 48 CFR 1253.204 - Administrative matters.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... prescribed for use in the closeout of applicable contracts, as specified in (TAR) 48 CFR 1204.804-570: (a) Form DOT F 4220.4, Contractor's Release. (See (TAR) 48 CFR 1204.804-570.) Form DOT F 4220.4 is... (TAR) 48 CFR 1204.804-570.) Form DOT F 4220.45 is authorized for local reproduction and a copy...

  4. 48 CFR 1253.204 - Administrative matters.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... prescribed for use in the closeout of applicable contracts, as specified in (TAR) 48 CFR 1204.804-570: (a) Form DOT F 4220.4, Contractor's Release. (See (TAR) 48 CFR 1204.804-570.) Form DOT F 4220.4 is... (TAR) 48 CFR 1204.804-570.) Form DOT F 4220.45 is authorized for local reproduction and a copy...

  5. 48 CFR 1253.204 - Administrative matters.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... prescribed for use in the closeout of applicable contracts, as specified in (TAR) 48 CFR 1204.804-570: (a) Form DOT F 4220.4, Contractor's Release. (See (TAR) 48 CFR 1204.804-570.) Form DOT F 4220.4 is... (TAR) 48 CFR 1204.804-570.) Form DOT F 4220.45 is authorized for local reproduction and a copy...

  6. 48 CFR 1253.204 - Administrative matters.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... prescribed for use in the closeout of applicable contracts, as specified in (TAR) 48 CFR 1204.804-570: (a) Form DOT F 4220.4, Contractor's Release. (See (TAR) 48 CFR 1204.804-570.) Form DOT F 4220.4 is... (TAR) 48 CFR 1204.804-570.) Form DOT F 4220.45 is authorized for local reproduction and a copy...

  7. 48 CFR 1253.204 - Administrative matters.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... prescribed for use in the closeout of applicable contracts, as specified in (TAR) 48 CFR 1204.804-570: (a) Form DOT F 4220.4, Contractor's Release. (See (TAR) 48 CFR 1204.804-570.) Form DOT F 4220.4 is... (TAR) 48 CFR 1204.804-570.) Form DOT F 4220.45 is authorized for local reproduction and a copy...

  8. When matter matters

    SciTech Connect

    Easson, Damien A.; Sawicki, Ignacy; Vikman, Alexander E-mail: ignacy.sawicki@uni-heidelberg.de

    2013-07-01

    We study a recently proposed scenario for the early universe:Subluminal Galilean Genesis. We prove that without any other matter present in the spatially flat Friedmann universe, the perturbations of the Galileon scalar field propagate with a speed at most equal to the speed of light. This proof applies to all cosmological solutions — to the whole phase space. However, in a more realistic situation, when one includes any matter which is not directly coupled to the Galileon, there always exists a region of phase space where these perturbations propagate superluminally, indeed with arbitrarily high speed. We illustrate our analytic proof with numerical computations. We discuss the implications of this result for the possible UV completion of the model.

  9. Administrative Synergy

    ERIC Educational Resources Information Center

    Hewitt, Kimberly Kappler; Weckstein, Daniel K.

    2012-01-01

    One of the biggest obstacles to overcome in creating and sustaining an administrative professional learning community (PLC) is time. Administrators are constantly deluged by the tyranny of the urgent. It is a Herculean task to carve out time for PLCs, but it is imperative to do so. In this article, the authors describe how an administrative PLC…

  10. Elastically Decoupling Dark Matter

    NASA Astrophysics Data System (ADS)

    Kuflik, Eric; Perelstein, Maxim; Lorier, Nicolas Rey-Le; Tsai, Yu-Dai

    2016-06-01

    We present a novel dark matter candidate, an elastically decoupling relic, which is a cold thermal relic whose present abundance is determined by the cross section of its elastic scattering on standard model particles. The dark matter candidate is predicted to have a mass ranging from a few to a few hundred MeV, and an elastic scattering cross section with electrons, photons and/or neutrinos in the 10-3- 1 fb range.

  11. Elastically Decoupling Dark Matter.

    PubMed

    Kuflik, Eric; Perelstein, Maxim; Lorier, Nicolas Rey-Le; Tsai, Yu-Dai

    2016-06-01

    We present a novel dark matter candidate, an elastically decoupling relic, which is a cold thermal relic whose present abundance is determined by the cross section of its elastic scattering on standard model particles. The dark matter candidate is predicted to have a mass ranging from a few to a few hundred MeV, and an elastic scattering cross section with electrons, photons and/or neutrinos in the 10^{-3}-1  fb range. PMID:27314712

  12. Particulate Matter

    MedlinePlus

    ... Technology Laws & Regulations About EPA Contact Us Particulate Matter (PM) You are here: EPA Home Air & Radiation Six Common Pollutants Particulate Matter Announcements March 13, 2013 - An updated “Strategies ...

  13. Modernizing Administration.

    ERIC Educational Resources Information Center

    Lombardi, Vincent L.; Hildebrand, Verna

    1981-01-01

    Suggests assignment of research duties and rotation of teaching and management roles for college administrators, to increase their effectiveness and diminish the negative effects of declining enrollments. (JD)

  14. 7 CFR 633.3 - Administration.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 6 2012-01-01 2012-01-01 false Administration. 633.3 Section 633.3 Agriculture... AGRICULTURE LONG TERM CONTRACTING WATER BANK PROGRAM § 633.3 Administration. (a) The regulations in this part... administration and related policy matters. No determination by the State Technical Committee shall compel...

  15. 7 CFR 633.3 - Administration.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 6 2011-01-01 2011-01-01 false Administration. 633.3 Section 633.3 Agriculture... AGRICULTURE LONG TERM CONTRACTING WATER BANK PROGRAM § 633.3 Administration. (a) The regulations in this part... administration and related policy matters. No determination by the State Technical Committee shall compel...

  16. 7 CFR 633.3 - Administration.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 6 2013-01-01 2013-01-01 false Administration. 633.3 Section 633.3 Agriculture... AGRICULTURE LONG TERM CONTRACTING WATER BANK PROGRAM § 633.3 Administration. (a) The regulations in this part... administration and related policy matters. No determination by the State Technical Committee shall compel...

  17. 7 CFR 633.3 - Administration.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 6 2010-01-01 2010-01-01 false Administration. 633.3 Section 633.3 Agriculture... AGRICULTURE LONG TERM CONTRACTING WATER BANK PROGRAM § 633.3 Administration. (a) The regulations in this part... administration and related policy matters. No determination by the State Technical Committee shall compel...

  18. Administrative Support.

    ERIC Educational Resources Information Center

    Doran, Dorothy; And Others

    This guide is intended to assist business education teachers in administrative support courses. The materials presented are based on the Arizona validated occupational competencies and tasks for the occupations of receptionist, secretary, and administrative assistant. Word processing skills have been infused into each of the three sections. The…

  19. Administrative Ecology

    ERIC Educational Resources Information Center

    McGarity, Augustus C., III; Maulding, Wanda

    2007-01-01

    This article discusses how all four facets of administrative ecology help dispel the claims about the "impossibility" of the superintendency. These are personal ecology, professional ecology, organizational ecology, and community ecology. Using today's superintendency as an administrative platform, current literature describes a preponderance of…

  20. Superconducting Detectors for Superlight Dark Matter.

    PubMed

    Hochberg, Yonit; Zhao, Yue; Zurek, Kathryn M

    2016-01-01

    We propose and study a new class of superconducting detectors that are sensitive to O(meV) electron recoils from dark matter-electron scattering. Such devices could detect dark matter as light as the warm dark-matter limit, m(X)≳1  keV. We compute the rate of dark-matter scattering off of free electrons in a (superconducting) metal, including the relevant Pauli blocking factors. We demonstrate that classes of dark matter consistent with terrestrial and cosmological or astrophysical constraints could be detected by such detectors with a moderate size exposure. PMID:26799009

  1. Superconducting Detectors for Superlight Dark Matter

    NASA Astrophysics Data System (ADS)

    Hochberg, Yonit; Zhao, Yue; Zurek, Kathryn M.

    2016-01-01

    We propose and study a new class of superconducting detectors that are sensitive to O (meV ) electron recoils from dark matter-electron scattering. Such devices could detect dark matter as light as the warm dark-matter limit, mX≳1 keV . We compute the rate of dark-matter scattering off of free electrons in a (superconducting) metal, including the relevant Pauli blocking factors. We demonstrate that classes of dark matter consistent with terrestrial and cosmological or astrophysical constraints could be detected by such detectors with a moderate size exposure.

  2. Archival Administration in the Electronic Information Age: An Advanced Institute for Government Archivists (2nd, Pittsburgh, Pennsylvania, June 3-14, 1991).

    ERIC Educational Resources Information Center

    Pittsburgh Univ., PA. Graduate School of Library and Information Sciences.

    This report describes the first phase of an institute that was designed to provide technical information to the chief administrative officials of state archival agencies about new trends in information technology and to introduce them to management tools needed for operating in this environment. Background information on the first institute…

  3. Administrative simplification: adoption of operating rules for health care electronic funds transfers (EFT) and remittance advice transactions. Interim final rule with comment period.

    PubMed

    2012-08-10

    This interim final rule with comment period implements parts of section 1104 of the Affordable Care Act which requires the adoption of operating rules for the health care electronic funds transfers (EFT) and remittance advice transaction. PMID:22888504

  4. Dark Matters

    ScienceCinema

    Joseph Silk

    2010-01-08

    One of the greatest mysteries in the cosmos is that it is mostly dark.  Astronomers and particle physicists today are seeking to unravel the nature of this mysterious, but pervasive dark matter which has profoundly influenced the formation of structure in the universe.  I will describe the complex interplay between galaxy formation and dark matter detectability and review recent attempts to measure particle dark matter by direct and indirect means.

  5. Dark Matters

    SciTech Connect

    Joseph Silk

    2009-09-23

    One of the greatest mysteries in the cosmos is that it is mostly dark.  Astronomers and particle physicists today are seeking to unravel the nature of this mysterious, but pervasive dark matter which has profoundly influenced the formation of structure in the universe.  I will describe the complex interplay between galaxy formation and dark matter detectability and review recent attempts to measure particle dark matter by direct and indirect means.

  6. Dark matters

    NASA Astrophysics Data System (ADS)

    Steigman, Gary

    The observational evidence for dark matter in the universe is reviewed. Constraints on the baryon density from primordial nucleosynthesis are presented and compared to the dynamical estimates of the mass on various scales. Baryons can account for the observed luminous mass as well as some, perhaps most, of the 'observed' dark mass. However if, as inflation/naturalness suggest, the total density of the universe is equal to the critical density, then nonbaryonic dark matter is required. The assets and liabilities of, as well as the candidates for, hot and cold dark matter are outlined. At present, there is no completely satisfactory candidate for nonbaryonic dark matter.

  7. Dark Matter

    SciTech Connect

    Bashir, A.; Cotti, U.; De Leon, C. L.; Raya, A; Villasenor, L.

    2008-07-02

    One of the biggest scientific mysteries of our time resides in the identification of the particles that constitute a large fraction of the mass of our Universe, generically known as dark matter. We review the observations and the experimental data that imply the existence of dark matter. We briefly discuss the properties of the two best dark-matter candidate particles and the experimental techniques presently used to try to discover them. Finally, we mention a proposed project that has recently emerged within the Mexican community to look for dark matter.

  8. Electronic Homework.

    ERIC Educational Resources Information Center

    Lee, Fong-lok; Heyworth, Rex M.

    The Electronic Homework assistant system is composed of two components: the Computer Tutor and the Homework Administrator. The Computer Tutor is an intelligent tutoring system that can provide personal assistance like supplying hints, checking errors, providing remediation and prioritizing problems. The Homework Administrator is a teacher's…

  9. Direct Student Loans: Additional Steps Would Increase Borrowers' Awareness of Electronic Debiting and Reduce Federal Administrative Costs. Report to the Honorable James M. Jeffords, U.S. Senate.

    ERIC Educational Resources Information Center

    Ashby, Cornelia M.

    In November 1999, the U.S. Department of Education began offering a 0.25% interest rate reduction to borrowers under the Direct Loan program who agree to have their monthly loan payments automatically withdrawn from a bank account through its electronic debit account (EDA) program. The Department of Education submitted a justification to the…

  10. Administrative simplification: adoption of standards for health care electronic funds transfers (EFTs) and remittance advice. Interim final rule with comment period.

    PubMed

    2012-01-10

    This interim final rule with comment period implements parts of section 1104 of the Affordable Care Act which requires the adoption of a standard for electronic funds transfers (EFT). It defines EFT and explains how the adopted standards support and facilitate health care EFT transmissions. PMID:22359791

  11. Parent Perceptions of the Efficacy of Electronic School-Home Communication Methods Used by the Faculty and Administration of a Rural High School in Southern Georgia

    ERIC Educational Resources Information Center

    Parker, Arlie, III; Sparkman, Dana

    2008-01-01

    The purpose of this study was to determine parent perceptions of the efficacy of the use of three forms of electronic school-home communication used by faculty and staff in a rural high school in southern Georgia--e-mail, PowerSchool, and School Messenger. An anonymous survey instrument containing Likert scale questions, yes/no questions, and…

  12. Language Matters

    ERIC Educational Resources Information Center

    Silverberg, Ruth P.; Kottkamp, Robert B.

    2006-01-01

    In 1993, a Special Interest Group, "Teaching in Educational Administration" (TEA/SIG), was born at the annual meeting of the American Educational Research Association as a result of work of the Division A (Administration) Task Force on Teaching and Learning in Educational Administration and the particular efforts of Jane Lindle and Paul Bredeson.…

  13. Preparing Administrators for Connected Schools.

    ERIC Educational Resources Information Center

    Ross, Tweed W.

    New technology, in the form of electronic connectivity, has opened up vast new arenas for educational development. Many administrators, however, have not been prepared for the sudden change brought about by such technology. The problem for school administrators is how to lead effectively without being overcome by the new information technologies.…

  14. Administrative IT

    ERIC Educational Resources Information Center

    Grayson, Katherine, Ed.

    2006-01-01

    When it comes to Administrative IT solutions and processes, best practices range across the spectrum. Enterprise resource planning (ERP), student information systems (SIS), and tech support are prominent and continuing areas of focus. But widespread change can also be accomplished via the implementation of campuswide document imaging and sharing,…

  15. Engineering Administration.

    ERIC Educational Resources Information Center

    Naval Personnel Program Support Activity, Washington, DC.

    This book is intended to acquaint naval engineering officers with their duties in the engineering department. Standard shipboard organizations are analyzed in connection with personnel assignments, division operations, and watch systems. Detailed descriptions are included for the administration of directives, ship's bills, damage control, training…

  16. ADMINISTRATIVE CLIMATE.

    ERIC Educational Resources Information Center

    BRUCE, ROBERT L.; CARTER, G.L., JR.

    IN THE COOPERATIVE EXTENSION SERVICE, STYLES OF LEADERSHIP PROFOUNDLY AFFECT THE QUALITY OF THE SERVICE RENDERED. ACCORDINGLY, MAJOR INFLUENCES ON ADMINISTRATIVE CLIMATE AND EMPLOYEE PRODUCTIVITY ARE EXAMINED IN ESSAYS ON (1) SOURCES OF JOB SATISFACTION AND DISSATISFACTION, (2) MOTIVATIONAL THEORIES BASED ON JOB-RELATED SATISFACTIONS AND NEEDS,…

  17. Large Extra Dimension and Dark Matter Detection

    SciTech Connect

    Qin Bo; Starkman, Glenn D.; Silk, Joseph

    2008-01-03

    If our space has the large extra dimensions as proposed by Arkani-Hamed, Dimopoulos and Dvali (ADD), then gravity would start to deviate from Newtonian gravity and be greatly enhanced in sub-millimeter scales. Here we show that in the ADD scenario, gravity could play an important role (compared to the weak interaction) in the interactions between dark matter particles and the electron. We find that for typical WIMP dark matter, such dark matter-electron 'gravitational' scattering cross section may be much larger than the dark matter-nucleon cross section constrained by current dark matter experiments.

  18. Large Extra Dimension and Dark Matter Detection

    NASA Astrophysics Data System (ADS)

    Qin, Bo; Starkman, Glenn D.; Silk, Joseph

    2008-01-01

    If our space has the large extra dimensions as proposed by Arkani-Hamed, Dimopoulos and Dvali (ADD), then gravity would start to deviate from Newtonian gravity and be greatly enhanced in sub-millimeter scales. Here we show that in the ADD scenario, gravity could play an important role (compared to the weak interaction) in the interactions between dark matter particles and the electron. We find that for typical WIMP dark matter, such dark matter-electron ``gravitational'' scattering cross section may be much larger than the dark matter-nucleon cross section constrained by current dark matter experiments.

  19. International Conference on Harmonisation; Electronic Transmission of Postmarket Individual Case Safety Reports for Drugs and Biologics, Excluding Vaccines; Availability of Food and Drug Administration Regional Implementation Specifications for ICH E2B(R3) Reporting to the Food and Drug Administration Adverse Event Reporting System. Notice of Availability.

    PubMed

    2016-06-23

    The Food and Drug Administration (FDA) is announcing the availability of its FDA Adverse Event Reporting System (FAERS) Regional Implementation Specifications for the International Conference on Harmonisation (ICH) E2B(R3) Specification. FDA is making this technical specifications document available to assist interested parties in electronically submitting individual case safety reports (ICSRs) (and ICSR attachments) to the Center for Drug Evaluation and Research (CDER) and the Center for Biologics Evaluation and Research (CBER). This document, entitled "FDA Regional Implementation Specifications for ICH E2B(R3) Implementation: Postmarket Submission of Individual Case Safety Reports (ICSRs) for Drugs and Biologics, Excluding Vaccines" supplements the "E2B(R3) Electronic Transmission of Individual Case Safety Reports (ICSRs) Implementation Guide--Data Elements and Message Specification" final guidance for industry and describes FDA's technical approach for receiving ICSRs, for incorporating regionally controlled terminology, and for adding region-specific data elements when reporting to FAERS. PMID:27373012

  20. 28 CFR 12.2 - Administration of act.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 28 Judicial Administration 1 2010-07-01 2010-07-01 false Administration of act. 12.2 Section 12.2 Judicial Administration DEPARTMENT OF JUSTICE REGISTRATION OF CERTAIN PERSONS HAVING KNOWLEDGE OF FOREIGN ESPIONAGE, COUNTERESPIONAGE, OR SABOTAGE MATTERS UNDER THE ACT OF AUGUST 1, 1956 § 12.2 Administration...

  1. 28 CFR 12.2 - Administration of act.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 28 Judicial Administration 1 2014-07-01 2014-07-01 false Administration of act. 12.2 Section 12.2 Judicial Administration DEPARTMENT OF JUSTICE REGISTRATION OF CERTAIN PERSONS HAVING KNOWLEDGE OF FOREIGN ESPIONAGE, COUNTERESPIONAGE, OR SABOTAGE MATTERS UNDER THE ACT OF AUGUST 1, 1956 § 12.2 Administration...

  2. 28 CFR 12.2 - Administration of act.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 28 Judicial Administration 1 2013-07-01 2013-07-01 false Administration of act. 12.2 Section 12.2 Judicial Administration DEPARTMENT OF JUSTICE REGISTRATION OF CERTAIN PERSONS HAVING KNOWLEDGE OF FOREIGN ESPIONAGE, COUNTERESPIONAGE, OR SABOTAGE MATTERS UNDER THE ACT OF AUGUST 1, 1956 § 12.2 Administration...

  3. 28 CFR 12.2 - Administration of act.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 28 Judicial Administration 1 2012-07-01 2012-07-01 false Administration of act. 12.2 Section 12.2 Judicial Administration DEPARTMENT OF JUSTICE REGISTRATION OF CERTAIN PERSONS HAVING KNOWLEDGE OF FOREIGN ESPIONAGE, COUNTERESPIONAGE, OR SABOTAGE MATTERS UNDER THE ACT OF AUGUST 1, 1956 § 12.2 Administration...

  4. 28 CFR 12.2 - Administration of act.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 28 Judicial Administration 1 2011-07-01 2011-07-01 false Administration of act. 12.2 Section 12.2 Judicial Administration DEPARTMENT OF JUSTICE REGISTRATION OF CERTAIN PERSONS HAVING KNOWLEDGE OF FOREIGN ESPIONAGE, COUNTERESPIONAGE, OR SABOTAGE MATTERS UNDER THE ACT OF AUGUST 1, 1956 § 12.2 Administration...

  5. Quark matter droplets in neutron stars

    NASA Technical Reports Server (NTRS)

    Heiselberg, H.; Pethick, C. J.; Staubo, E. F.

    1993-01-01

    We show that, for physically reasonable bulk and surface properties, the lowest energy state of dense matter consists of quark matter coexisting with nuclear matter in the presence of an essentially uniform background of electrons. We estimate the size and nature of spatial structure in this phase, and show that at the lowest densities the quark matter forms droplets embedded in nuclear matter, whereas at higher densities it can exhibit a variety of different topologies. A finite fraction of the interior of neutron stars could consist of matter in this new phase, which would provide new mechanisms for glitches and cooling.

  6. 7 CFR 550.33 - Administrative supervision.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... OF AGRICULTURE GENERAL ADMINISTRATIVE POLICY FOR NON-ASSISTANCE COOPERATIVE AGREEMENTS Management of Agreements Program Management § 550.33 Administrative supervision. REE employees are prohibited from engaging in matters related to cooperator employer/employee relations such as personnel, performance and...

  7. 7 CFR 550.33 - Administrative supervision.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... OF AGRICULTURE GENERAL ADMINISTRATIVE POLICY FOR NON-ASSISTANCE COOPERATIVE AGREEMENTS Management of Agreements Program Management § 550.33 Administrative supervision. REE employees are prohibited from engaging in matters related to cooperator employer/employee relations such as personnel, performance and...

  8. 7 CFR 550.33 - Administrative supervision.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... OF AGRICULTURE GENERAL ADMINISTRATIVE POLICY FOR NON-ASSISTANCE COOPERATIVE AGREEMENTS Management of Agreements Program Management § 550.33 Administrative supervision. REE employees are prohibited from engaging in matters related to cooperator employer/employee relations such as personnel, performance and...

  9. 7 CFR 550.33 - Administrative supervision.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... OF AGRICULTURE GENERAL ADMINISTRATIVE POLICY FOR NON-ASSISTANCE COOPERATIVE AGREEMENTS Management of Agreements Program Management § 550.33 Administrative supervision. REE employees are prohibited from engaging in matters related to cooperator employer/employee relations such as personnel, performance and...

  10. 27 CFR 11.6 - Administrative provisions.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... Title 15, United States Code, to the jurisdiction, powers and duties of the Administrator under this Act... Administrator under this Act. (b) Examination and subpoena. Any appropriate TTB officer shall at all reasonable... production of all such documentary evidence relating to any matter under investigation, upon a...

  11. 27 CFR 11.6 - Administrative provisions.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... Title 15, United States Code, to the jurisdiction, powers and duties of the Administrator under this Act... Administrator under this Act. (b) Examination and subpoena. Any appropriate TTB officer shall at all reasonable... production of all such documentary evidence relating to any matter under investigation, upon a...

  12. 27 CFR 11.6 - Administrative provisions.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... Title 15, United States Code, to the jurisdiction, powers and duties of the Administrator under this Act... Administrator under this Act. (b) Examination and subpoena. Any appropriate TTB officer shall at all reasonable... production of all such documentary evidence relating to any matter under investigation, upon a...

  13. PM2D code simulation of electronic dynamics and electro-magnetic fields generation by ultra-short laser pulses interaction with matter

    SciTech Connect

    Litvinenko, I. A.; Lykov, V. A.

    1997-04-15

    The results of numerical simulation of fast electrons motion and generated electro-magnetic fields at the picosecond pulse laser interaction with flat target are presented. The calculations were performed with PM2D code, where relativistic equation of electron motion joint with Maxwell equations is solved by particle method in cells. The efficiency of fast electrons energy conversion to the transverse electromagnetic wave of picosecond duration can reach the value 10{sup -4} for the intensity of ultrashort laser pulse at the target 10{sup 16}-10{sup 17} W/cm{sup 2}.

  14. Cognitive analyses of a paper medical record and electronic medical record on the documentation of two nursing tasks: patient education and adherence assessment of insulin administration.

    PubMed Central

    Rinkus, Susan M.; Chitwood, Ainsley

    2002-01-01

    The incorporation of electronic medical records into busy physician clinics has been a major development in the healthcare industry over the past decade. Documentation of key nursing activities, especially when interacting with patients who have chronic diseases, is often lacking or missing from the paper medical record. A case study of a patient with diabetes mellitus was created. Well established methods for the assessment of usability in the areas of human-computer interaction and computer supported cooperative work were employed to compare the nursing documentation of two tasks in a commercially available electronic medical record (eRecord) and in a paper medical record. Overall, the eRecord was found to improve the timeliness and quality of nursing documentation. With certain tasks, the number of steps to accomplish the same task was higher, which may result in the perception by the end user that the tool is more complex and therefore difficult to use. Recommendations for the eRecord were made to expand the documentation of patient teaching and adherence assessment and to incorporate web technology for patient access to medical records and healthcare information. PMID:12463905

  15. Gravitino Dark Matter

    SciTech Connect

    Buchmueller, Wilfried

    2010-02-10

    Gravitino dark matter, together with thermal leptogenesis, implies an upper bound on the masses of superparticles. In the case of broken R-parity the constraints from primordial nucleosynthesis are naturally satisfied and decaying gravitinos lead to characteristic signatures in high energy cosmic rays. Electron and positron fluxes from gravitino decays cannot explain both, the PAMELA positron fraction and the electron+positron flux recently measured by Fermi LAT. The observed fluxes require astrophysical sources. The measured antiproton flux allows for a sizable contribution of decaying gravitinos to the gamma-ray spectrum, in particular a line at an energy below 300 GeV.

  16. Comparison of the Risk of Gastrointestinal Bleeding among Different Statin Exposures with Concomitant Administration of Warfarin: Electronic Health Record-Based Retrospective Cohort Study

    PubMed Central

    Lim, Sun Gyo; Hong, Ji Man; Park, Rae Woong; Lee, Jin Soo

    2016-01-01

    Background and Objective Patients who should be treated with both warfarin and a statin are frequently seen in vascular clinics. The risk for bleeding and potential drug interactions should be considered when prescribing both medications together. This study aimed to compare the risk for gastrointestinal bleeding among different statin exposures with concomitant administration of warfarin. Materials and Methods This is a single-hospital retrospective cohort study. We included patients who were concomitantly exposed to one of four statins (pravastatin, simvastatin, atorvastatin, and rosuvastatin) and warfarin for up to 2 years (730 days). The observation period ended when a gastrointestinal bleeding event occurred or the observation was censored. Within-class comparisons were used, and 1:1 matching using a propensity score was performed for comparisons between each statin and all of the other statins. Kaplan-Meier analyses with log-rank tests and Cox proportional hazard regression analyses were conducted to determine associations with the risk of gastrointestinal bleeding. Results Data were analyzed for 1,686 patients who were concomitantly administered a statin and warfarin. Log-rank tests for the gastrointestinal bleeding-free survival rate showed that the risk for gastrointestinal bleeding was significantly lower in the pravastatin group (p = 0.0499) and higher in the rosuvastatin group (p = 0.009). In the Cox proportional hazard regression analysis, the hazard ratio of 5.394 for gastrointestinal bleeding based on statin exposure in the rosuvastatin group was significant (95% confidence interval, 1.168–24.916). Conclusions There was a relatively high risk of gastrointestinal bleeding with rosuvastatin when administered concomitantly with warfarin. PMID:27386858

  17. A Rigorous Curriculum Really Matters

    ERIC Educational Resources Information Center

    Cook, Erika

    2013-01-01

    As every good secondary administrator knows, rigorous curricula matter. Challenging curricula is the factor in lifting each student to reach their potential: "the academic intensity of the student's high school curriculum still counts more than anything else...in providing momentum toward completing a bachelor's degree"…

  18. Hatchery Spray Cabinet Administration Does Not Damage Avian Coronavirus Infectious Bronchitis Virus Vaccine Based on Analysis by Electron Microscopy and Virus Titration.

    PubMed

    Roh, Ha-Jung; Jordan, Brian J; Hilt, Deborah A; Ard, Mary B; Jackwood, Mark W

    2015-03-01

    studies in our laboratory showed that the Arkansas-Delmarva Poultry Industry (Ark-DPI) vaccine given to 1-day-old chickens by hatchery spray cabinet replicated poorly and failed to adequately protect broilers against homologous virus challenge, whereas the same vaccine given by eye-drop did replicate and the birds were protected following homologous virus challenge. To determine if mechanical damage following spray application plays a role in failure of the Ark-DPI vaccine, we examined the morphology of three Ark-DPI vaccines from different manufacturers using an electron microscope and included a Massachusetts (Mass) vaccine as control. One of the Ark-DPI vaccines (vaccine A) and the Mass vaccine had significantly (P < 0.005) fewer spikes than the other two Ark-DPI vaccines. We also found that the Ark-DPI and Mass vaccines had significantly (P < 0.005) fewer spike proteins per virus particle when compared to their respective challenge viruses. This observation is interesting and may provide some insight into the mechanism behind infectious bronchitis virus attenuation. No obvious differences were observed in virus morphology and no consistent trend in the number of spikes per virion was found in before- and after-spray samples. We also determined the vaccine titer before and after spray in embryonated eggs and found that both Ark-DPI and Mass vaccines had a similar drop in titer, 0.40 logi and 0.310 logi, respec10ively. Based on these data, it appears that mechanical damage to the Ark-DPI vaccine is not occurring when delivered by a hatchery spray cabinet, suggesting that some other factor is contributing to the failure of that vaccine when given by that method. PMID:26292549

  19. Plasma dark matter direct detection

    NASA Astrophysics Data System (ADS)

    Clarke, J. D.; Foot, R.

    2016-01-01

    Dark matter in spiral galaxies like the Milky Way may take the form of a dark plasma. Hidden sector dark matter charged under an unbroken U(1)' gauge interaction provides a simple and well defined particle physics model realising this possibility. The assumed U(1)' neutrality of the Universe then implies (at least) two oppositely charged dark matter components with self-interactions mediated via a massless "dark photon" (the U(1)' gauge boson). In addition to nuclear recoils such dark matter can give rise to keV electron recoils in direct detection experiments. In this context, the detailed physical properties of the dark matter plasma interacting with the Earth is required. This is a complex system, which is here modelled as a fluid governed by the magnetohydrodynamic equations. These equations are numerically solved for some illustrative examples, and implications for direct detection experiments discussed. In particular, the analysis presented here leaves open the intriguing possibility that the DAMA annual modulation signal is due primarily to electron recoils (or even a combination of electron recoils and nuclear recoils). The importance of diurnal modulation (in addition to annual modulation) as a means of probing this kind of dark matter is also emphasised.

  20. Dark matter detection

    NASA Astrophysics Data System (ADS)

    Baudis, Laura

    2016-08-01

    More than 80 years after its first postulation in modern form, the existence and distribution of dark matter in our Universe is well established. Dark matter is the gravitational glue that holds together galaxies, galaxy clusters and structures on the largest cosmological scales, and an essential component to explain the observed fluctuations in the cosmic microwave background. Yet its existence is inferred indirectly, through its gravitational influence on luminous matter, and its nature is not known. A viable hypothesis is that dark matter is made of new, elementary particles, with allowed masses and interaction strengths spanning a wide range. Two well-motivated classes of candidates are axions and weakly interacting massive particles (WIMPs), and experimental efforts have now reached sensitivities that allow them to test this hypothesis. Axions, produced non-thermally in the early Universe, can be detected by exploiting their predicted couplings to photons and electrons. WIMPs can be detected directly by looking for their collisions with atomic nuclei ultra-low background detectors, or indirectly, through the observation of their annihilation products such as neutrinos, gamma rays, positrons and antiprotons over the astrophysical background. A complementary method is the production of dark matter particles at colliders such as the Large Hadron Collider, where they could be observed indirectly via missing transverse energy, or via associated particle production. I will review the main experimental efforts to search for dark matter particles, and the existing constraints on the interaction cross sections. I will also discuss future experiments, their complementarity and their ability to measure the properties of these particles.

  1. Changes Matter!

    ERIC Educational Resources Information Center

    Lott, Kimberly; Jensen, Anitra

    2012-01-01

    Being able to distinguish between physical and chemical changes of matter is a foundational chemistry concept that at first seems like a simple elementary concept to teach, but students often have misconceptions that hinder their understanding. These misconceptions are seen among elementary students, but these ideas are perpetuated throughout…

  2. Performance Matters

    ERIC Educational Resources Information Center

    Miller-Day, Michelle

    2008-01-01

    After being told in an end-of-year job review that performances are not considered valuable research outcomes, the author argues in this essay that performance matters. This essay makes a case for recognizing performance ethnographies as research, pedagogy, and active service and concludes with guidelines for performance ethnographers who are…

  3. Chemical characterization of outdoor and subway fine (PM(2.5-1.0)) and coarse (PM(10-2.5)) particulate matter in Seoul (Korea) by computer-controlled scanning electron microscopy (CCSEM).

    PubMed

    Byeon, Sang-Hoon; Willis, Robert; Peters, Thomas M

    2015-02-01

    Outdoor and indoor (subway) samples were collected by passive sampling in urban Seoul (Korea) and analyzed with computer-controlled scanning electron microscopy coupled with energy dispersive x-ray spectroscopy (CCSEM-EDX). Soil/road dust particles accounted for 42%-60% (by weight) of fine particulate matter larger than 1 µm (PM(2.5-1.0)) in outdoor samples and 18% of PM2.5-1.0 in subway samples. Iron-containing particles accounted for only 3%-6% in outdoor samples but 69% in subway samples. Qualitatively similar results were found for coarse particulate matter (PM(10-2.5)) with soil/road dust particles dominating outdoor samples (66%-83%) and iron-containing particles contributing most to subway PM(10-2.5) (44%). As expected, soil/road dust particles comprised a greater mass fraction of PM(10-2.5) than PM(2.5-1.0). Also as expected, the mass fraction of iron-containing particles was substantially less in PM(10-2.5) than in PM(2.5-1.0). Results of this study are consistent with known emission sources in the area and with previous studies, which showed high concentrations of iron-containing particles in the subway compared to outdoor sites. Thus, passive sampling with CCSEM-EDX offers an inexpensive means to assess PM(2.5-1.0) and PM(10-2.5) simultaneously and by composition at multiple locations. PMID:25689348

  4. CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES: Self-consistent nonlinear analysis of a frequency-quadrupling terahertz gyroklystron

    NASA Astrophysics Data System (ADS)

    Liu, Di-Wei; Yuan, Xue-Song; Yan, Yang; Liu, Sheng-Gang

    2009-12-01

    This paper analyses a three-cavity frequency-quadrupling terahertz gyroklystron with successive frequency-doubling in each cavity with self-consistent nonlinear theory. The beam-wave interaction efficiency and the electron bunching process are studied. The variation of output efficiency with the length of drift tubes and output power and the variation of Ohmic loss with the length of output cavity are considered. Numerical simulations predict an optimal output efficiency of 1.8%, a power output of more than 2 kW and a gain of 33 dB after taking into account Ohmic losses when the frequency-quadrupling gyroklystron, driven by a 40-kV, 3-A electron beam and 1 Watt input power, operates at 225 GHz.

  5. Fast Crystallization and Improved Stability of Perovskite Solar Cells with Zn2SnO4 Electron Transporting Layer: Interface Matters.

    PubMed

    Bera, Ashok; Sheikh, Arif D; Haque, Md Azimul; Bose, Riya; Alarousu, Erkki; Mohammed, Omar F; Wu, Tom

    2015-12-30

    Here we report that mesoporous ternary oxide Zn2SnO4 can significantly promotes the crystallization of hybrid perovskite layers and serves as an efficient electron transporting material in perovskite solar cells. Such devices exhibit an energy conversion efficiency of 13.34%, which is even higher than that achieved with the commonly used TiO2 in the similar experimental conditions (9.1%). Simple one-step spin coating of CH3NH3PbI3-xClx on Zn2SnO4 is found to lead to rapidly crystallized bilayer perovskite structure without any solvent engineering. Furthermore, ultrafast transient absorption measurement reveals efficient charge transfer at the Zn2SnO4/perovskite interface. Most importantly, solar cells with Zn2SnO4 as the electron-transporting material exhibit negligible electrical hysteresis and exceptionally high stability without encapsulation for over one month. Besides underscoring Zn2SnO4 as a highly promising electron transporting material for perovskite solar cells, our results demonstrate the significant role of interfaces on improving the perovskite crystallization and photovoltaic performance. PMID:26633572

  6. 5 CFR 534.505 - Pay related matters.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Pay related matters. 534.505 Section 534.505 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS PAY UNDER OTHER SYSTEMS Pay for Senior-Level and Scientific and Professional Positions § 534.505 Pay related matters....

  7. 5 CFR 534.505 - Pay related matters.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 5 Administrative Personnel 1 2013-01-01 2013-01-01 false Pay related matters. 534.505 Section 534.505 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS PAY UNDER OTHER SYSTEMS Pay for Senior-Level and Scientific and Professional Positions § 534.505 Pay related matters....

  8. 5 CFR 534.505 - Pay related matters.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 5 Administrative Personnel 1 2014-01-01 2014-01-01 false Pay related matters. 534.505 Section 534.505 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS PAY UNDER OTHER SYSTEMS Pay for Senior-Level and Scientific and Professional Positions § 534.505 Pay related matters....

  9. 5 CFR 534.505 - Pay related matters.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 5 Administrative Personnel 1 2011-01-01 2011-01-01 false Pay related matters. 534.505 Section 534.505 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS PAY UNDER OTHER SYSTEMS Pay for Senior-Level and Scientific and Professional Positions § 534.505 Pay related matters....

  10. 5 CFR 534.505 - Pay related matters.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 5 Administrative Personnel 1 2012-01-01 2012-01-01 false Pay related matters. 534.505 Section 534.505 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS PAY UNDER OTHER SYSTEMS Pay for Senior-Level and Scientific and Professional Positions § 534.505 Pay related matters....

  11. Mindset matters

    NASA Astrophysics Data System (ADS)

    Cato, John

    2011-01-01

    We all love those students who just refuse to quit. At sometime during their lives, they adopted a philosophy that they were going to do the best they could, and they recognized that accomplishing their dreams was simply a matter of doing the necessary work in order to be successful. But we also have had those students who didn't even seem to try, and there was very little we could do to get them going. They coasted along, made poor grades, and always seemed to indicate that they weren't going to try. They were "smart," they never needed to study, and they certainly weren't about to start now no matter what was said to them. Better yet, their struggles weren't their fault, but rather due to "bad teaching." I thought that was just the way it was going to be.

  12. Dark matter.

    PubMed

    Peebles, P James E

    2015-10-01

    The evidence for the dark matter (DM) of the hot big bang cosmology is about as good as it gets in natural science. The exploration of its nature is now led by direct and indirect detection experiments, to be complemented by advances in the full range of cosmological tests, including judicious consideration of the rich phenomenology of galaxies. The results may confirm ideas about DM already under discussion. If we are lucky, we also will be surprised once again. PMID:24794526

  13. Dark matter

    PubMed Central

    Peebles, P. James E.

    2015-01-01

    The evidence for the dark matter (DM) of the hot big bang cosmology is about as good as it gets in natural science. The exploration of its nature is now led by direct and indirect detection experiments, to be complemented by advances in the full range of cosmological tests, including judicious consideration of the rich phenomenology of galaxies. The results may confirm ideas about DM already under discussion. If we are lucky, we also will be surprised once again. PMID:24794526

  14. 15 CFR 766.11 - Matter protected against disclosure.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 15 Commerce and Foreign Trade 2 2012-01-01 2012-01-01 false Matter protected against disclosure... ADMINISTRATIVE ENFORCEMENT PROCEEDINGS § 766.11 Matter protected against disclosure. (a) Protective measures. It... determines that documents containing the sensitive matter need to be made available to a respondent to...

  15. 28 CFR 0.47 - Alien property matters.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 28 Judicial Administration 1 2012-07-01 2012-07-01 false Alien property matters. 0.47 Section 0.47....47 Alien property matters. The Office of Alien Property shall be a part of the Civil Division: (a) The following described matters are assigned to, and shall be conducted, handled, or supervised by...

  16. 15 CFR 766.11 - Matter protected against disclosure.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 15 Commerce and Foreign Trade 2 2013-01-01 2013-01-01 false Matter protected against disclosure... ADMINISTRATIVE ENFORCEMENT PROCEEDINGS § 766.11 Matter protected against disclosure. (a) Protective measures. It... determines that documents containing the sensitive matter need to be made available to a respondent to...

  17. 15 CFR 766.11 - Matter protected against disclosure.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 15 Commerce and Foreign Trade 2 2011-01-01 2011-01-01 false Matter protected against disclosure... ADMINISTRATIVE ENFORCEMENT PROCEEDINGS § 766.11 Matter protected against disclosure. (a) Protective measures. It... determines that documents containing the sensitive matter need to be made available to a respondent to...

  18. 28 CFR 0.47 - Alien property matters.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 28 Judicial Administration 1 2011-07-01 2011-07-01 false Alien property matters. 0.47 Section 0.47....47 Alien property matters. The Office of Alien Property shall be a part of the Civil Division: (a) The following described matters are assigned to, and shall be conducted, handled, or supervised by...

  19. 28 CFR 0.47 - Alien property matters.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 28 Judicial Administration 1 2010-07-01 2010-07-01 false Alien property matters. 0.47 Section 0.47....47 Alien property matters. The Office of Alien Property shall be a part of the Civil Division: (a) The following described matters are assigned to, and shall be conducted, handled, or supervised by...

  20. 17 CFR 10.41 - Prehearing conferences; procedural matters.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...; procedural matters. 10.41 Section 10.41 Commodity and Securities Exchanges COMMODITY FUTURES TRADING... Prehearing conferences; procedural matters. In any proceeding the Administrative Law Judge may direct that...) Determining matters of which official notice may be taken; (d) Discussing amendments to pleadings;...

  1. 17 CFR 10.41 - Prehearing conferences; procedural matters.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...; procedural matters. 10.41 Section 10.41 Commodity and Securities Exchanges COMMODITY FUTURES TRADING... Prehearing conferences; procedural matters. In any proceeding the Administrative Law Judge may direct that...) Determining matters of which official notice may be taken; (d) Discussing amendments to pleadings;...

  2. 7 CFR 1412.50 - Matters of general applicability.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false Matters of general applicability. 1412.50 Section... and Peanuts 2008 through 2012 § 1412.50 Matters of general applicability. These regulations and CCC's... matters of general applicability and are not individually appealable in administrative appeals...

  3. 17 CFR 10.41 - Prehearing conferences; procedural matters.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...; procedural matters. 10.41 Section 10.41 Commodity and Securities Exchanges COMMODITY FUTURES TRADING... Prehearing conferences; procedural matters. In any proceeding the Administrative Law Judge may direct that...) Determining matters of which official notice may be taken; (d) Discussing amendments to pleadings;...

  4. 28 CFR 0.47 - Alien property matters.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 28 Judicial Administration 1 2014-07-01 2014-07-01 false Alien property matters. 0.47 Section 0.47....47 Alien property matters. The Office of Alien Property shall be a part of the Civil Division: (a) The following described matters are assigned to, and shall be conducted, handled, or supervised by...

  5. 15 CFR 766.11 - Matter protected against disclosure.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 15 Commerce and Foreign Trade 2 2010-01-01 2010-01-01 false Matter protected against disclosure... ADMINISTRATIVE ENFORCEMENT PROCEEDINGS § 766.11 Matter protected against disclosure. (a) Protective measures. It... determines that documents containing the sensitive matter need to be made available to a respondent to...

  6. 7 CFR 1412.50 - Matters of general applicability.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 10 2014-01-01 2014-01-01 false Matters of general applicability. 1412.50 Section... and Peanuts 2008 Through 2012 § 1412.50 Matters of general applicability. These regulations and CCC's... matters of general applicability and are not individually appealable in administrative appeals...

  7. 7 CFR 1412.50 - Matters of general applicability.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 10 2012-01-01 2012-01-01 false Matters of general applicability. 1412.50 Section... and Peanuts 2008 through 2012 § 1412.50 Matters of general applicability. These regulations and CCC's... matters of general applicability and are not individually appealable in administrative appeals...

  8. 17 CFR 10.41 - Prehearing conferences; procedural matters.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...; procedural matters. 10.41 Section 10.41 Commodity and Securities Exchanges COMMODITY FUTURES TRADING... Prehearing conferences; procedural matters. In any proceeding the Administrative Law Judge may direct that...) Determining matters of which official notice may be taken; (d) Discussing amendments to pleadings;...

  9. 7 CFR 1412.50 - Matters of general applicability.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 10 2013-01-01 2013-01-01 false Matters of general applicability. 1412.50 Section... and Peanuts 2008 Through 2012 § 1412.50 Matters of general applicability. These regulations and CCC's... matters of general applicability and are not individually appealable in administrative appeals...

  10. 7 CFR 1412.50 - Matters of general applicability.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 10 2011-01-01 2011-01-01 false Matters of general applicability. 1412.50 Section... and Peanuts 2008 through 2012 § 1412.50 Matters of general applicability. These regulations and CCC's... matters of general applicability and are not individually appealable in administrative appeals...

  11. 28 CFR 0.71 - Delegation respecting immunity matters.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 28 Judicial Administration 1 2011-07-01 2011-07-01 false Delegation respecting immunity matters. 0... JUSTICE Tax Division § 0.71 Delegation respecting immunity matters. The Assistant Attorney General in charge of the Tax Division is authorized to handle matters involving the immunity of the...

  12. 28 CFR 0.71 - Delegation respecting immunity matters.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 28 Judicial Administration 1 2013-07-01 2013-07-01 false Delegation respecting immunity matters. 0... JUSTICE Tax Division § 0.71 Delegation respecting immunity matters. The Assistant Attorney General in charge of the Tax Division is authorized to handle matters involving the immunity of the...

  13. 28 CFR 0.71 - Delegation respecting immunity matters.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 28 Judicial Administration 1 2010-07-01 2010-07-01 false Delegation respecting immunity matters. 0... JUSTICE Tax Division § 0.71 Delegation respecting immunity matters. The Assistant Attorney General in charge of the Tax Division is authorized to handle matters involving the immunity of the...

  14. 28 CFR 0.71 - Delegation respecting immunity matters.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 28 Judicial Administration 1 2012-07-01 2012-07-01 false Delegation respecting immunity matters. 0... JUSTICE Tax Division § 0.71 Delegation respecting immunity matters. The Assistant Attorney General in charge of the Tax Division is authorized to handle matters involving the immunity of the...

  15. 28 CFR 0.71 - Delegation respecting immunity matters.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 28 Judicial Administration 1 2014-07-01 2014-07-01 false Delegation respecting immunity matters. 0... JUSTICE Tax Division § 0.71 Delegation respecting immunity matters. The Assistant Attorney General in charge of the Tax Division is authorized to handle matters involving the immunity of the...

  16. 13 CFR 117.13 - Investigation and resolution of matters.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... matters. 117.13 Section 117.13 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION... 1975, AS AMENDED § 117.13 Investigation and resolution of matters. (a) SBA will make a prompt... complying, is not complying, or has failed to comply with this part. (b) Resolution of matters. If...

  17. INTERACTION OF LASER RADIATION WITH MATTER. LASER PLASMA: Energetic electrons and x-ray photons from multiterawatt Ti:sapphire lasers

    NASA Astrophysics Data System (ADS)

    Nickles, P. V.; Kalachnikov, M. P.; Warwick, P. J.; Janulewicz, K. A.; Sandner, W.; Jahnke, U.; Hilscher, D.; Schnurer, M.; Nolte, R.; Rousse, A.

    1999-05-01

    The energy distribution and yield of electrons and hard x-ray photons were investigated by irradiating tungsten and tantalum targets with ~ 30 fs pulses in the intensity range 1018 — 1019 W cm-2 by using the Laboratoire d'Optique Appliquee (LOA) as well as the Max Born Institut (MBI) multiterawatt Ti:sapphire lasers. For the measurement of the hard x-ray emission in the energy range from 15 keV to 700 keV at the LOA a 9-channel spectrometer of calibrated thermoluminescence detectors (TLD) was used. The scaling of the hard x-rays was studied by varying the incident laser energy within one order of magnitude and the pulsewidth by a factor of 5. The hot electron output was investigated in the range 300 keV — 1 MeV with the new MBI Ti:sapphire laser by using a time-of-flight spectrometer. The results indicate a sensitive interplay between the temporal laser shape and laser intensity.

  18. CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES: Thermal annealing behaviour of Al/Ni/Au multilayer on n-GaN Schottky contacts

    NASA Astrophysics Data System (ADS)

    Liu, Fang; Wang, Tao; Shen, Bo; Huang, Sen; Lin, Fang; Ma, Nan; Xu, Fu-Jun; Wang, Peng; Yao, Jian-Quan

    2009-04-01

    Recently GaN-based high electron mobility transistors (HEMTs) have revealed the superior properties of a high breakdown field and high electron saturation velocity. Reduction of the gate leakage current is one of the key issues to be solved for their further improvement. This paper reports that an Al layer as thin as 3 nm was inserted between the conventional Ni/Au Schottky contact and n-GaN epilayers, and the Schottky behaviour of Al/Ni/Au contact was investigated under various annealing conditions by current-voltage (I-V) measurements. A non-linear fitting method was used to extract the contact parameters from the I-V characteristic curves. Experimental results indicate that reduction of the gate leakage current by as much as four orders of magnitude was successfully recorded by thermal annealing. And high quality Schottky contact with a barrier height of 0.875 eV and the lowest reverse-bias leakage current, respectively, can be obtained under 12 min annealing at 450 °C in N2 ambience.

  19. CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES: Field Emission Properties of Ball-Like Nano-Carbon Thin Films Deposited on Mo Films with Accidented Topography

    NASA Astrophysics Data System (ADS)

    Wang, Long-Yang; Wang, Xiao-Ping; Wang, Li-Jun; Zhang, Lei

    2008-11-01

    Ball-like nano-carhon thin films (BNCTs) are grown on Mo layers by microwave plasma chemical vapour deposition (MPCVD) system. The Mo layers are deposited on ceramic substrates by electron beam deposition method and are pretreated by ultrasonically scratching. The optimization effects of ultrasonically scratching pretreat-ment on the surface micro-structures of carbon films are studied. It is found from field-emission scanning electron microscope (FE-SEM) images and Raman spectra that the surface structures of the carbon films deposited on Mo pretreated are improved, which are composed of highly uniform nano-structured carbon balls with considerable disorder structures. Field emission (FE) measurements are carried out using a diode structure. The experimental results indicate that the BNCTs exhibit good FE properties, which have the turn on field of 1.56 V/μm, and the current density of 1.0mA/cm2 at electric field of 4.0 V/μm, the uniformly distributed emission site density from a broad well-proportioned emission area of 4 cm2 are also obtained. Linearity is observed in Fowler-Nordheim (F-N) plots in higher Geld region, and the possible emission mechanism of BNCTs is discussed.

  20. 32 CFR 700.720 - Administration and discipline: Staff embarked.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 32 National Defense 5 2010-07-01 2010-07-01 false Administration and discipline: Staff embarked... Commanders In Chief and Other Commanders Administration and Discipline § 700.720 Administration and discipline: Staff embarked. In matters of general discipline, the staff of a commander embarked and...

  1. 48 CFR 4.705-2 - Pay administration records.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 1 2011-10-01 2011-10-01 false Pay administration records. 4.705-2 Section 4.705-2 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION GENERAL ADMINISTRATIVE MATTERS Contractor Records Retention 4.705-2 Pay administration records....

  2. 77 FR 59790 - General Services Administration Acquisition Regulation (GSAR); Rewrite of Part 504...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-01

    ... October 9, 2008, GSA published in the Federal Register at 73 FR 59589 a proposed rule with a request for... (GSAR); Rewrite of Part 504; Administrative Matters AGENCY: Office of Acquisition Policy, General... Administrative Matters and Forms. This final rule is part of the General Services Administration...

  3. Front matter.

    PubMed

    2015-01-01

    The pHealth 2015 Conference is the 12th in a series of scientific events bringing together expertise from medical, technological, political, administrative, and social domains, and even from philosophy or linguistics. It opens a new chapter in the success story of the series of international conferences on wearable or implantable micro and nano technologies for personalized medicine by presenting keynotes, invited talks, oral presentations, and short poster presentations provided by close to 100 authors from 20 countries from various parts of the world. Starting in 2003 with personal health management systems, pHealth conferences have evolved to truly interdisciplinary and global events by covering technological and biomedical facilities, legal, ethical, social, and organizational requirements and impacts as well as necessary basic research for enabling future proof care paradigms. Thereby, it combines medical services with public health, prevention, social and elderly care, wellness and personal fitness to establish participatory, predictive, personalized, preventive, and effective care settings. By this way, it has attracted scientists, developers, and practitioners from various technologies, medical and health disciplines, legal affairs, politics, and administration from all over the world. The conference brought together health services vendor and provider institutions, payer organizations, governmental departments, academic institutions, professional bodies, but also patient and citizens representatives. Smart mobile systems such as microsystems, smart textiles, smart implants, sensor-controlled medical devices, and innovative sensor and actuator principles and techniques as well as related body, local and wide area networks up to Cloud services have become important enablers for telemedicine and ubiquitous pervasive health as the next generation health services. Social media and gamification have added even further knowledge to pHealth as an eco-system. OECD

  4. AMS-02 fits dark matter

    NASA Astrophysics Data System (ADS)

    Balázs, Csaba; Li, Tong

    2016-05-01

    In this work we perform a comprehensive statistical analysis of the AMS-02 electron, positron fluxes and the antiproton-to-proton ratio in the context of a simplified dark matter model. We include known, standard astrophysical sources and a dark matter component in the cosmic ray injection spectra. To predict the AMS-02 observables we use propagation parameters extracted from observed fluxes of heavier nuclei and the low energy part of the AMS-02 data. We assume that the dark matter particle is a Majorana fermion coupling to third generation fermions via a spin-0 mediator, and annihilating to multiple channels at once. The simultaneous presence of various annihilation channels provides the dark matter model with additional flexibility, and this enables us to simultaneously fit all cosmic ray spectra using a simple particle physics model and coherent astrophysical assumptions. Our results indicate that AMS-02 observations are not only consistent with the dark matter hypothesis within the uncertainties, but adding a dark matter contribution improves the fit to the data. Assuming, however, that dark matter is solely responsible for this improvement of the fit, it is difficult to evade the latest CMB limits in this model.

  5. Insights into complexation of dissolved organic matter and Al(III) and nanominerals formation in soils under contrasting fertilizations using two-dimensional correlation spectroscopy and high resolution-transmission electron microscopy techniques.

    PubMed

    Wen, Yongli; Li, Huan; Xiao, Jian; Wang, Chang; Shen, Qirong; Ran, Wei; He, Xinhua; Zhou, Quansuo; Yu, Guanghui

    2014-09-01

    Understanding the organomineral associations in soils is of great importance. Using two-dimensional correlation spectroscopy (2DCOS) and high resolution-transmission electron microscopy (HRTEM) techniques, this study compared the binding characteristics of organic ligands to Al(III) in dissolved organic matter (DOM) from soils under short-term (3-years) and long-term (22-years) fertilizations. Three fertilization treatments were examined: (i) no fertilization (Control), (ii) chemical nitrogen, phosphorus and potassium (NPK), and (iii) NPK plus swine manure (NPKM). Soil spectra detected by the 2DCOS Fourier transform infrared (FTIR) spectroscopy showed that fertilization modified the binding characteristics of organic ligands to Al(III) in soil DOM at both short- and long- term location sites. The CH deformations in aliphatic groups played an important role in binding to Al(III) but with minor differences among the Control, NPK and NPKM at the short-term site. While at the long-term site both C-O stretching of polysaccharides or polysaccharide-like substances and aliphatic O-H were bound to Al(III) under the Control, whereas only aliphatic O-H, and only polysaccharides and silicates, were bound to Al(III) under NPK and NPKM, respectively. Images from HRTEM demonstrated that crystalline nanominerals, composed of Fe and O, were predominant in soil DOM under NPK, while amorphous nanominerals, predominant in Al, Si, and O, were dominant in soil DOM under Control and NPKM. In conclusion, fertilization strategies, especially under long-term, could affect the binding of organic ligands to Al(III) in soil DOM, which resulted in alterations in the turnover, reactivity, and bioavailability of soil organic matter. Our results demonstrated that the FTIR-2DCOS combined with HRTEM techniques could enhance our understanding in the binding characteristics of DOM to Al(III) and the resulted nanominerals in soils. PMID:24997950

  6. Chemical Characterization of Outdoor and Subway Fine (PM2.5–1.0) and Coarse (PM10–2.5) Particulate Matter in Seoul (Korea) by Computer-Controlled Scanning Electron Microscopy (CCSEM)

    PubMed Central

    Byeon, Sang-Hoon; Willis, Robert; Peters, Thomas M.

    2015-01-01

    Outdoor and indoor (subway) samples were collected by passive sampling in urban Seoul (Korea) and analyzed with computer-controlled scanning electron microscopy coupled with energy dispersive x-ray spectroscopy (CCSEM-EDX). Soil/road dust particles accounted for 42%–60% (by weight) of fine particulate matter larger than 1 µm (PM2.5–1.0) in outdoor samples and 18% of PM2.5–1.0 in subway samples. Iron-containing particles accounted for only 3%–6% in outdoor samples but 69% in subway samples. Qualitatively similar results were found for coarse particulate matter (PM10–2.5) with soil/road dust particles dominating outdoor samples (66%–83%) and iron-containing particles contributing most to subway PM10–2.5 (44%). As expected, soil/road dust particles comprised a greater mass fraction of PM10–2.5 than PM2.5–1.0. Also as expected, the mass fraction of iron-containing particles was substantially less in PM10–2.5 than in PM2.5–1.0. Results of this study are consistent with known emission sources in the area and with previous studies, which showed high concentrations of iron-containing particles in the subway compared to outdoor sites. Thus, passive sampling with CCSEM-EDX offers an inexpensive means to assess PM2.5–1.0 and PM10-2.5 simultaneously and by composition at multiple locations. PMID:25689348

  7. Distributed Access to Administrative Systems.

    ERIC Educational Resources Information Center

    Carson, Eugene

    1987-01-01

    Administrators, faculty, and staff should have electronic access to records needed to perform their jobs, and students should have access to their own records--course registration and addresses. User-directed analysis and reporting are discussed and the security and audit issues are examined. (Author/MLW)

  8. Senior Administrators Should Have Administrative Contracts.

    ERIC Educational Resources Information Center

    Posner, Gary J.

    1987-01-01

    Recognizing that termination is viewed by the employee as the equivalent to capital punishment of a career, an administrative contract can reduce the emotional and financial entanglements that often result. Administrative contracts are described. (MLW)

  9. Novice Administrators: Personality and Administrative Style Changes.

    ERIC Educational Resources Information Center

    Schmidt, Linda J.; Kosmoski, Georgia J.; Pollack, Dennis R.

    Since the advent of effective-schools research findings, educational administration experts have advocated a democratic and collegial leadership style for school administrators. This paper provides the findings of a study that examined 43 beginning administrators (25 females, 32 Caucasians, 9 African-Americans, 2 Hispanics) to determine what…

  10. Electron Diffraction Using Transmission Electron Microscopy

    PubMed Central

    Bendersky, Leonid A.; Gayle, Frank W.

    2001-01-01

    Electron diffraction via the transmission electron microscope is a powerful method for characterizing the structure of materials, including perfect crystals and defect structures. The advantages of electron diffraction over other methods, e.g., x-ray or neutron, arise from the extremely short wavelength (≈2 pm), the strong atomic scattering, and the ability to examine tiny volumes of matter (≈10 nm3). The NIST Materials Science and Engineering Laboratory has a history of discovery and characterization of new structures through electron diffraction, alone or in combination with other diffraction methods. This paper provides a survey of some of this work enabled through electron microscopy.

  11. Model-Independent Studies of Dark Matter

    NASA Astrophysics Data System (ADS)

    Chen, Chuan-Ren

    The excess in cosmic-ray positrons and electrons observed by PAMELA, ATIC, PPB-BET and Fermi can be explained by dark matter decay or annihilation. On the other hand, the negative results from CDMS II and XENON direct detections of dark matter put an upper limit on the elastic-scattering cross section between dark matter and nucleon. We adopted model-independent approaches to study dark matter in cosmic-ray electrons, gamma-ray, relic density, direct detection experiments and LHC. We studied the distribution of the cosmic-ray electron flux observed at the Earth and found that it can reflect the initial energy spectrum of electrons generated from dark matter decay or annihilation even after propagation. We also derive constraints on the decay rate of dark matter into various two-body final states using Fermi and HESS gamma-ray data. We found that the μ+μ- or τ+τ- final state is favored in order to simultaneously explain electron excess and meet all gamma-ray constraints. Finally, we examined various tree-level induced operators of dimension six and constrain them using the current experimental data, including the WMAP data of the relic abundance and CDMS II direct detection of the spin-independent scattering. The implication of LHC search is also explored.

  12. Microvasculature of the human cerebral white matter: arteries of the deep white matter.

    PubMed

    Nonaka, Hiroko; Akima, Michio; Hatori, Tsutomu; Nagayama, Tadashi; Zhang, Zean; Ihara, Fumie

    2003-06-01

    The vascular architecture of the human cerebral deep white matter was studied using soft X-ray and diaphanized specimens, achieved by intra-arterial injection of barium and vascular stain respectively, and also by electron microscopic examination of the corrosion cast of arteries in normal adult brains. The deep white matter arteries passed through the cerebral cortex with a few branches to the cortex and ran straight through the white matter. The arteries concentrated ventriculopetally to the white matter around the lateral ventricle. Anastomoses were noted around the ventricular wall at the terminals of the deep white matter arteries. No centrifugal branches irrigating the periventricular white matter from the lenticulo-striate arteries were observed in the present study. The presence of anastomoses among the terminal branches of deep white matter arteries protects against ischemic change or infarction in this area from an occlusion of a single deep white matter artery. This may lead to development of terminal zone infarction from ischemia or vascular diseases, affecting multiple deep white matter arteries. The subcortical and deep white matter arteries had thick adventitial sheaths and large adventitial spaces in the white matter but not in the cortex. The presence or absence of the adventitial space is regarded as another characteristic difference between the arteries in the white matter and cortex. This difference may influence pathological changes in vascular lesions in these respective areas. PMID:12777099

  13. The DAMIC Dark Matter Experiment

    SciTech Connect

    de Mello Neto, J. R.T.

    2015-10-07

    The DAMIC (DArk Matter In CCDs) experiment uses high-resistivity, scientific-grade CCDs to search for dark matter. The CCD’s low electronic noise allows an unprecedently low energy threshold of a few tens of eV; this characteristic makes it possible to detect silicon recoils resulting from interactions of low-mass WIMPs. In addition, the CCD’s high spatial resolution and the excellent energy response results in very effective background identification techniques. The experiment has a unique sensitivity to dark matter particles with masses below 10 GeV/c2. Previous results have motivated the construction of DAMIC100, a 100 grams silicon target detector currently being installed at SNOLAB. The mode of operation and unique imaging capabilities of the CCDs, and how they may be exploited to characterize and suppress backgrounds are discussed, as well as physics results after one year of data taking.

  14. An Overview of Some Electronic Identification Use Cases in Europe

    NASA Astrophysics Data System (ADS)

    Mattatia, Fabrice

    As online services become more and more widely used, and as the exchanges of personal data become more and more widespread, electronic identification appears to be a key function for the security of the process and for the protection of privacy. It is the sole means of ensuring only authorized people have access to the data. In France and throughout Europe, e-government services, as well as private services, already use different means of electronic identification. Among the different technical solutions stand the electronic identity card: around 20 million eID cards have already been issued in Europe. The question of their interoperability is now open, in order that all European citizens may access the e-services of any Member State. With the development of electronic administration comes the need for the citizen to be able to prove his or her identity. This is essential if the citizen wants access to her personal data or administrative files, or if he wants to claim a right attached to his very identity. On the other hand, administrations have the obligation to ensure the personal data they store are not displayed to people who are not entitled to see them. They also have the need to detect fraudsters. Electronic identification, which is the ability to prove someone's identity on the Internet, thus becomes a central matter.

  15. Electronic Reference Services: Some Suggested Guidelines.

    ERIC Educational Resources Information Center

    Sloan, Bernie

    1998-01-01

    Suggests guidelines to help libraries formalize their electronic reference services. Covers the following issues: administration/management (library division/department, library administration, campus administration, academic departments); services; primary clientele; personnel; infrastructure/facilities; finances; and evaluation. (AEF)

  16. 28 CFR 0.157 - Federal Bureau of Investigation-Drug Enforcement Administration Senior Executive Service.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 28 Judicial Administration 1 2011-07-01 2011-07-01 false Federal Bureau of Investigation-Drug... Administrative Matters § 0.157 Federal Bureau of Investigation—Drug Enforcement Administration Senior Executive... within the Federal Bureau of Investigation (FBI) and the Drug Enforcement Administration (DEA) to......

  17. 28 CFR 0.138 - Federal Bureau of Investigation, Drug Enforcement Administration, Bureau of Alcohol, Tobacco...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 28 Judicial Administration 1 2013-07-01 2013-07-01 false Federal Bureau of Investigation, Drug... Administrative Matters § 0.138 Federal Bureau of Investigation, Drug Enforcement Administration, Bureau of.... (a) The Director of the Federal Bureau of Investigation, the Administrator......

  18. 28 CFR 0.157 - Federal Bureau of Investigation-Drug Enforcement Administration Senior Executive Service.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 28 Judicial Administration 1 2013-07-01 2013-07-01 false Federal Bureau of Investigation-Drug... Administrative Matters § 0.157 Federal Bureau of Investigation—Drug Enforcement Administration Senior Executive... within the Federal Bureau of Investigation (FBI) and the Drug Enforcement Administration (DEA) to......

  19. 28 CFR 0.157 - Federal Bureau of Investigation-Drug Enforcement Administration Senior Executive Service.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 28 Judicial Administration 1 2010-07-01 2010-07-01 false Federal Bureau of Investigation-Drug... Administrative Matters § 0.157 Federal Bureau of Investigation—Drug Enforcement Administration Senior Executive... within the Federal Bureau of Investigation (FBI) and the Drug Enforcement Administration (DEA) to......

  20. 28 CFR 0.138 - Federal Bureau of Investigation, Drug Enforcement Administration, Bureau of Alcohol, Tobacco...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 28 Judicial Administration 1 2014-07-01 2014-07-01 false Federal Bureau of Investigation, Drug... Administrative Matters § 0.138 Federal Bureau of Investigation, Drug Enforcement Administration, Bureau of.... (a) The Director of the Federal Bureau of Investigation, the Administrator......

  1. 28 CFR 0.157 - Federal Bureau of Investigation-Drug Enforcement Administration Senior Executive Service.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 28 Judicial Administration 1 2012-07-01 2012-07-01 false Federal Bureau of Investigation-Drug... Administrative Matters § 0.157 Federal Bureau of Investigation—Drug Enforcement Administration Senior Executive... within the Federal Bureau of Investigation (FBI) and the Drug Enforcement Administration (DEA) to......

  2. 28 CFR 0.157 - Federal Bureau of Investigation-Drug Enforcement Administration Senior Executive Service.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 28 Judicial Administration 1 2014-07-01 2014-07-01 false Federal Bureau of Investigation-Drug... Administrative Matters § 0.157 Federal Bureau of Investigation—Drug Enforcement Administration Senior Executive... within the Federal Bureau of Investigation (FBI) and the Drug Enforcement Administration (DEA) to......

  3. 28 CFR 0.138 - Federal Bureau of Investigation, Drug Enforcement Administration, Bureau of Alcohol, Tobacco...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 28 Judicial Administration 1 2012-07-01 2012-07-01 false Federal Bureau of Investigation, Drug... Administrative Matters § 0.138 Federal Bureau of Investigation, Drug Enforcement Administration, Bureau of.... (a) The Director of the Federal Bureau of Investigation, the Administrator......

  4. 28 CFR 0.138 - Federal Bureau of Investigation, Drug Enforcement Administration, Bureau of Alcohol, Tobacco...

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 28 Judicial Administration 1 2011-07-01 2011-07-01 false Federal Bureau of Investigation, Drug... Administrative Matters § 0.138 Federal Bureau of Investigation, Drug Enforcement Administration, Bureau of.... (a) The Director of the Federal Bureau of Investigation, the Administrator......

  5. 28 CFR 0.138 - Federal Bureau of Investigation, Drug Enforcement Administration, Bureau of Alcohol, Tobacco...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 28 Judicial Administration 1 2010-07-01 2010-07-01 false Federal Bureau of Investigation, Drug... Administrative Matters § 0.138 Federal Bureau of Investigation, Drug Enforcement Administration, Bureau of.... (a) The Director of the Federal Bureau of Investigation, the Administrator......

  6. Organization/Administration.

    ERIC Educational Resources Information Center

    Chaffee, Ellen Earle

    Patterns that emerged from reviewing 26 syllabi for courses on organization and administration in higher education are discussed, and six sample syllabi are presented. The syllabi focused more on organization than administration. Of the 26 syllabi, 19 dealt with organization and administration generally; 5 with administration in a specific…

  7. Front matter.

    PubMed

    2014-01-01

    The pHealth 2014 Conference is the 11th in a series of scientific events bringing together expertise from medical, technological, political, administrative, and social domains, all related to the provision of personalized health services. Aspects such as cooperation between primary, secondary and tertiary health care establishments, the inclusion of social care, home care and lifestyle management, practical experiences with local or regional telemedicine services, management of chronic diseases, Quality assurance challenges, health games, terminologies and ontologies, data management and visualizations, medical decision support, monitoring of environmental and living conditions of citizens using mobile wearable or implementable technologies as well as social and ethical issues of health (care) provision are to be addressed by almost 40 speakers from various parts of the world. Keynotes, invited talks, and oral presentations discuss foundations and principles, requirements and solutions for pHealth. European success stories and national pilots as well as innovations and industrial products enabling the paradigm change towards participative and personalized health form the scientific program, together with demonstrations of existing and emerging applications in the pHealth domain. Presentations will be complemented by a students' poster competition. In the last years, the pHealth conferences have emerged as the leading international conference series on wearable micro and nano technologies for personalized medicine and personalized health service provision. Starting in 2003, pHealth has gained importance for attracting well acknowledged scientists in the domains of relevant technologies, medical doctors, and policy makers from academic institutions, hospital administrations, governmental and regulatory bodies, the healthcare industry and allied professions. Collecting the experience of a dynamically emerging professional community from Europe and beyond, the p

  8. White matter dementia in CADASIL.

    PubMed

    Filley, C M; Thompson, L L; Sze, C I; Simon, J A; Paskavitz, J F; Kleinschmidt-DeMasters, B K

    1999-03-01

    Cerebral white matter disorders may be associated with profound neurobehavioral dysfunction. We report a 62-year-old man who had a slowly progressive 25-year history of personality change, psychosis, mood disorder, and dementia. Neurologic examination disclosed abulia, impaired memory retrieval, and preserved language, with only minimal motor impairment. Neuropsychological testing found a sustained attention deficit, cognitive slowing, impaired learning with intact recognition, and perseveration. Magnetic resonance imaging of the brain revealed extensive leukoencephalopathy. Right frontal brain biopsy showed ill-defined white matter pallor with hyaline narrowing of white matter arterioles. Granular osmiophilic material adjacent to vascular smooth muscle cells on electron microscopy of a skin biopsy, and an arginine for cysteine replacement at position 169 in the 4 EGF motif of the notch 3 region on chromosome 19q12 established the diagnosis of cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). This case illustrates that CADASIL can manifest as an isolated neurobehavioral disorder over an extended time period. The dementia associated with CADASIL closely resembles that which may occur with other white matter disorders, and represents an example of white matter dementia. PMID:10371078

  9. Conducting Compositions of Matter

    NASA Technical Reports Server (NTRS)

    Viswanathan, Tito (Inventor)

    1999-01-01

    The invention provides conductive compositions of matter, as well as methods for the preparation of the conductive compositions of matter, solutions comprising the conductive compositions of matter, and methods of preparing fibers or fabrics having improved anti-static properties employing the conductive compositions of matter.

  10. Conducting compositions of matter

    NASA Technical Reports Server (NTRS)

    Viswanathan, Tito (Inventor)

    2000-01-01

    The invention provides conductive compositions of matter, as well as methods for the preparation of the conductive compositions of matter, solutions comprising the conductive compositions of matter, and methods of preparing fibers or fabrics having improved anti-static properties employing the conductive compositions of matter.

  11. 48 CFR 3053.204-70 - Administrative matters.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... specified in (HSAR) 48 CFR 3004.804-570: (a) DHS Form 700-1, Cumulative Claim and Reconciliation Statement. (See (HSAR) 48 CFR 3004.804-570(a)(3).) (b) DHS Form 700-2, Contractor's Assignment of Refunds, Rebates, Credits and Other Amounts. (See (HSAR) 48 CFR 3004.804-570(a)(2).) (c) DHS Form 700-3, Contractor...

  12. 48 CFR 3053.204-70 - Administrative matters.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... specified in (HSAR) 48 CFR 3004.804-570: (a) DHS Form 700-1, Cumulative Claim and Reconciliation Statement. (See (HSAR) 48 CFR 3004.804-570(a)(3).) (b) DHS Form 700-2, Contractor's Assignment of Refunds, Rebates, Credits and Other Amounts. (See (HSAR) 48 CFR 3004.804-570(a)(2).) (c) DHS Form 700-3, Contractor...

  13. 48 CFR 3053.204-70 - Administrative matters.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... specified in (HSAR) 48 CFR 3004.804-570: (a) DHS Form 0700-01, Cumulative Claim and Reconciliation Statement. (See (HSAR) 48 CFR 3004.804-570(a)(1).) (b) DHS Form 0700-02, Contractor's Assignment of Refunds, Rebates, Credits and Other Amounts. (See (HSAR) 48 CFR 3004.570(a)(2).) (c) DHS Form 0700-03,...

  14. 48 CFR 3053.204-70 - Administrative matters.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... specified in (HSAR) 48 CFR 3004.804-570: (a) DHS Form 700-1, Cumulative Claim and Reconciliation Statement. (See (HSAR) 48 CFR 3004.804-570(a)(3).) (b) DHS Form 700-2, Contractor's Assignment of Refunds, Rebates, Credits and Other Amounts. (See (HSAR) 48 CFR 3004.804-570(a)(2).) (c) DHS Form 700-3, Contractor...

  15. 48 CFR 3053.204-70 - Administrative matters.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... specified in (HSAR) 48 CFR 3004.804-570: (a) DHS Form 0700-01, Cumulative Claim and Reconciliation Statement. (See (HSAR) 48 CFR 3004.804-570(a)(1).) (b) DHS Form 0700-02, Contractor's Assignment of Refunds, Rebates, Credits and Other Amounts. (See (HSAR) 48 CFR 3004.570(a)(2).) (c) DHS Form 0700-03,...

  16. Front Matter.

    PubMed

    2016-01-01

    The pHealth 2016 Conference is the 13th in a series of scientific events bringing together expertise from medical, technological, political, administrative, legal and social domains. pHealth 2016 opens a new chapter in the success story of the series of international conferences on wearable or implantable micro, nano and biotechnologies for personalized health. Starting in 2003 with personal health management systems, pHealth has continuously extended its scope evolving to a truly interdisciplinary event by covering technological and biomedical facilities, legal, ethical, social, and organizational requirements and impacts as well as necessary basic research for enabling the future proof care paradigms. Thereby, pHealth increasingly combines medical devices and eHealth based services with public health, prevention, social and elderly care, wellness and personal fitness to establish participatory, predictive, personalized, preventive, and effective care settings. Smart mobile systems, eHealth and telemedicine have become important enablers for ubiquitous pervasive health as the next generation health services. Social media and gamification has added even further knowledge to pHealth both as a business domain and as a community safety-net. The pHealth2016 conference aims to further emphasise on the integration of biology and medical data, systems and information using mobile technologies through the development of micro-nano-bio smart systems for pHealth emphasizing on personalized health, virtual care, precision medicine, big bio-data management and analytics as well as security, privacy and safety issues. We welcome you to the city of Heraklion on the beautiful island of Crete for the pHealth 2016 conference to share experiences and results, and to open up for the future! Following a long-term tradition, pHealth 2016 is supported by the European Federation for Medical Informatics (EFMI)but also the HL7 International. The pHealth 2016 presentations are complemented

  17. HEALTH ASSESSMENT DOCUMENT FOR POLYCYCLIC ORGANIC MATTER

    EPA Science Inventory

    The document responds to Section 122 of the Clean Air Act as Amended August 1977, which requires the Administrator to decide whether atmospheric emissions of polycyclic organic matter (POM) potentially endanger public health. This document reviews POM data on chemical and physica...

  18. 12 CFR 791.6 - Subject matter of a meeting.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 12 Banks and Banking 6 2011-01-01 2011-01-01 false Subject matter of a meeting. 791.6 Section 791.6 Banks and Banking NATIONAL CREDIT UNION ADMINISTRATION REGULATIONS AFFECTING THE OPERATIONS OF THE... REGULATIONS; PUBLIC OBSERVATION OF NCUA BOARD MEETINGS Rules of NCUA Board Procedure § 791.6 Subject matter...

  19. 12 CFR 791.6 - Subject matter of a meeting.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 7 2012-01-01 2012-01-01 false Subject matter of a meeting. 791.6 Section 791.6 Banks and Banking NATIONAL CREDIT UNION ADMINISTRATION REGULATIONS AFFECTING THE OPERATIONS OF THE... REGULATIONS; PUBLIC OBSERVATION OF NCUA BOARD MEETINGS Rules of NCUA Board Procedure § 791.6 Subject matter...

  20. 12 CFR 791.6 - Subject matter of a meeting.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 7 2013-01-01 2013-01-01 false Subject matter of a meeting. 791.6 Section 791.6 Banks and Banking NATIONAL CREDIT UNION ADMINISTRATION REGULATIONS AFFECTING THE OPERATIONS OF THE... REGULATIONS; PUBLIC OBSERVATION OF NCUA BOARD MEETINGS Rules of NCUA Board Procedure § 791.6 Subject matter...

  1. 12 CFR 791.6 - Subject matter of a meeting.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 7 2014-01-01 2014-01-01 false Subject matter of a meeting. 791.6 Section 791.6 Banks and Banking NATIONAL CREDIT UNION ADMINISTRATION REGULATIONS AFFECTING THE OPERATIONS OF THE... REGULATIONS; PUBLIC OBSERVATION OF NCUA BOARD MEETINGS Rules of NCUA Board Procedure § 791.6 Subject matter...

  2. 12 CFR 791.6 - Subject matter of a meeting.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 12 Banks and Banking 6 2010-01-01 2010-01-01 false Subject matter of a meeting. 791.6 Section 791.6 Banks and Banking NATIONAL CREDIT UNION ADMINISTRATION REGULATIONS AFFECTING THE OPERATIONS OF THE... REGULATIONS; PUBLIC OBSERVATION OF NCUA BOARD MEETINGS Rules of NCUA Board Procedure § 791.6 Subject matter...

  3. 28 CFR 0.47 - Alien property matters.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 28 Judicial Administration 1 2013-07-01 2013-07-01 false Alien property matters. 0.47 Section 0.47....47 Alien property matters. The Office of Alien Property shall be a part of the Civil Division: (a... Alien Property: (1) Exercising or performing all the authority, rights, privileges, powers, duties,...

  4. 19 CFR 174.11 - Matters subject to protest.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... request made pursuant to the terms set forth in § 173.4 (19 CFR 173.4). (b) Administrative decisions. CBP... 19 Customs Duties 2 2013-04-01 2013-04-01 false Matters subject to protest. 174.11 Section 174.11... TREASURY (CONTINUED) PROTESTS Protests § 174.11 Matters subject to protest. The following decisions of...

  5. 19 CFR 174.11 - Matters subject to protest.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... request made pursuant to the terms set forth in § 173.4 (19 CFR 173.4). (b) Administrative decisions. CBP... 19 Customs Duties 2 2012-04-01 2012-04-01 false Matters subject to protest. 174.11 Section 174.11... TREASURY (CONTINUED) PROTESTS Protests § 174.11 Matters subject to protest. The following decisions of...

  6. 19 CFR 174.11 - Matters subject to protest.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... request made pursuant to the terms set forth in § 173.4 (19 CFR 173.4). (b) Administrative decisions. CBP... 19 Customs Duties 2 2014-04-01 2014-04-01 false Matters subject to protest. 174.11 Section 174.11... TREASURY (CONTINUED) PROTESTS Protests § 174.11 Matters subject to protest. The following decisions of...

  7. 19 CFR 174.11 - Matters subject to protest.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... request made pursuant to the terms set forth in § 173.4 (19 CFR 173.4). (b) Administrative decisions. CBP... 19 Customs Duties 2 2011-04-01 2011-04-01 false Matters subject to protest. 174.11 Section 174.11... TREASURY (CONTINUED) PROTESTS Protests § 174.11 Matters subject to protest. The following decisions of...

  8. Matter and twin matter in bimetric MOND

    NASA Astrophysics Data System (ADS)

    Milgrom, Mordehai

    2010-06-01

    Bimetric MOND (BIMOND) theories, propounded recently, predict peculiar gravitational interactions between matter and twin matter (TM). TM is the hypothetical matter that might couple directly only to the second metric of the theory, as standard matter couples only to the first. Considerations of cosmology in the BIMOND framework suggest that such TM might exist and copy matter in its attributes. Here, I investigate the indirect interactions that BIMOND theories predict between local, non-relativistic mass concentrations of matter and TM. The most salient result is that in the deep-MOND regime of the matter-TM symmetric theories, TM behaves as if it has a negative gravitational mass relative to matter (active and passive, with the inertial mass still positive). To wit, interaction within each sector is attractive MOND gravity, but between matter and TM it is repulsive MOND gravity. Using the space-conformal invariance of the theory in the deep-MOND regime, I derive various exact results; e.g. the repulsive force between a matter and TM point masses (space-conformal theories are a natural framework for masses of opposite signs). In the high-acceleration regime, the interaction depends on a parameter, (the strength of the Einstein-Hilbert action for matter). For the favoured value , matter and TM do not interact in this regime, for they attract and for they repel each other. Such interactions may have substantial ramifications for all aspects of structure formation, such as matter distribution, peculiar velocities and effects on the cosmic microwave background. The repulsive interactions probably lead to segregation of matter and TM structures, leading, in turn, to intermeshing of the respective cosmic webs, with high-density nodes of one sector residing in the voids of the other (possibly conducing to efficient evacuation of the voids). Weak gravitational lensing by TM seems the best way to detect it or constrain its attributes. In the MOND regime, a TM body acts on

  9. Front Matter.

    PubMed

    2016-01-01

    The current volume presents the accepted papers of the ICIMTH (International Conference on Informatics, Management, and Technology in Healthcare) Conference, which is being held from 1 to 3 July 2016 in Athens, Greece. The ICIMTH 2016 Conference is the 14th Annual Conference in this series of scientific events, gathering scientists from all continents as well as from the hosting country, in the field of Biomedical and Health Informatics. The main theme of the Conference is unifying the applications and foundations of Biomedical Informatics in the whole spectrum from Clinical Informatics, Health Informatics to Public Health Informatics as applied in the Healthcare domain. Considering that management, organizational and public health issues play an important role in the implementation of Biomedical Informatics applications, topics related to the above themes are also included as an integral part to the overall theme of the Conference. We are treating the field of Biomedical Informatics in a very broad framework by examining the research and applications outcomes of Informatics from cell to populations, including a number of Technologies such as Imaging, Sensors, Mobile communications, Biomedical Equipment, and Management subjects, as well as legal and societal issues in applying Health Informatics. In this volume we have incorporated papers accepted for oral presentation, whereas all other scientific events within the Conference are incorporated within the local electronic version of the proceedings. It should be noted that the Proceedings are published in this series of the Conference as an e-book with e-access for ease of use and browsing, without losing any of the advantages of indexing and citation in the largest scientific literature databases, such as Medline and Scopus, that the series of Studies in Health Technology and Informatics (SHTI) of IOS Press provides. At the end of the deadline we had almost a hundred submissions. After reviewing we have accepted 68

  10. Lifetime constraints for late dark matter decay

    SciTech Connect

    Bell, Nicole F.; Galea, Ahmad J.; Petraki, Kalliopi

    2010-07-15

    We consider a class of late-decaying dark matter models, in which a dark matter particle decays to a heavy stable daughter of approximately the same mass, together with one or more relativistic particles which carry away only a small fraction of the parent rest mass. Such decays can affect galactic halo structure and evolution, and have been invoked as a remedy to some of the small-scale structure formation problems of cold dark matter. There are existing stringent limits on the dark matter lifetime if the decays produce photons. By considering examples in which the relativistic decay products instead consist of neutrinos or electron-position pairs, we derive stringent limits on these scenarios for a wide range of dark matter masses. We thus eliminate a sizable portion of the parameter space for these late-decay models if the dominant decay channel involves standard model final states.

  11. Front matter.

    PubMed

    2014-01-01

    The current volume presents the papers of the ICIMTH (International Conference on Informatics, Management, and Technology in Healthcare). The Organising Committee and the Scientific Programme Committee would like to present to the academic community the scientific outcomes of the ICIMTH 2014 Conference, which is being held from 10 to 13 July, 2014 in Athens, Greece. The ICIMTH 2014 Conference is the 12th Annual Conference in this series of scientific events, gathering scientists from all continents as well as from the hosting country in the field of Biomedical and Health Informatics. The Conference has a major focus on the integration of the applications of Biomedical Informatics from Clinical Informatics, Health Informatics to Public Health Informatics as well as on ICT applications in the Healthcare domain. Considering that Management and Organisational Issues play an important role in the implementation phase of Biomedical Informatics applications, topics related to the above themes are also included as an integral part to the overall theme of the Conference. We are treating the field of Biomedical Informatics in a very broad framework examining the research and applications outcomes of Informatics from cell to populations, including a number of Technologies such as Imaging, Sensors, and Biomedical Equipment and Management and Organisational subjects, such as such as legal and social issues and setting research priorities in Health Informatics. However, in this volume we have incorporated only the papers and posters accepted for presentation, whereas all other scientific events within the Conference are incorporated within the local electronic version of the proceedings. It should be noted that the Proceedings are published for the first time in this series of the Conference as an e-book for ease of use and browsing without losing any of the advantages of indexing and citation in the biggest Scientific Literature Databases, such as Medline and Scopus that this

  12. Front Matter.

    PubMed

    2015-01-01

    The current volume presents the accepted papers of the ICIMTH (International Conference on Informatics, Management, and Technology in Healthcare). The Organising Committee and the Scientific Programme Committee would like to present to the academic community the scientific outcomes of the ICIMTH 2015 Conference, which is being held from 9 to 11 July, 2015 in Athens, Greece. The ICIMTH 2015 Conference is the 13th Annual Conference in this series of scientific events, gathering scientists from all continents as well as from the hosting country in the field of Biomedical and Health Informatics. The Conference has as a major focus the enabling of Biomedical Informatics applications in the whole spectrum from Clinical Informatics, Health Informatics to Public Health Informatics as applied in the Healthcare domain. Considering that Management and organisational issues play an important role in the implementation phase of Biomedical Informatics applications, topics related to the above themes are also included as an integral part to the overall theme of the Conference. We are treating the field of Biomedical Informatics in a very broad framework examining the research and applications outcomes of Informatics from cell to populations, including a number of Technologies such as Imaging, Sensors, and Biomedical Equipment and Management and Organisational subjects, such as legal and social issues and setting research priorities in Health Informatics. However, in this volume we have incorporated only full papers accepted for oral presentation, whereas all other scientific events within the Conference are incorporated within the local electronic version of the proceedings. It should be noted that the Proceedings are published in this series of the Conference as an e-book with e-access for ease of use and browsing without losing any of the advantages of indexing and citation in the biggest Scientific Literature Databases, such as Medline and Scopus that the series of Studies in

  13. Front Matter.

    PubMed

    2016-01-01

    policy level. There are 24 paper sessions, 20 poster sessions, 23 panel discussions, 14 workshops, 1 demonstration, 8 tutorials and 6 student competitions to attend. The exhibit hall will provide attendees with the opportunity to learn about the latest products and services in health and nursing information and information technology. The NI 2016 is adding two new features, a Wearable Fashion Show and an Interoperability Showcase. The Wearable Fashion Show will present how technology and fashion can be merged for healthcare. The Interoperability Showcase will present how EHR Applications, Devices and Apps communicate patient data electronically using HL7 standards and IHE profiles. This showcase is jointly organized by the HL7 Nurses Work Group with HL7 PCWG EHRWG, CICWG and Associations such as IMIA-NI, ICN, HIMSS and IHE. I hope that all participants have the opportunity to learn from and network with others through tutorials, keynotes, paper sessions, poster sessions, panel discussions, and workshops and find new and exciting ideas to inspire them. I am very grateful to the contributors for their contributions and the reviewers for providing expert reviews. I am especially grateful to Patrick Weber, Chair of the NI 2016 Local Organizing Committee, and Maria Muller-Staub and Margie Kennedy, Co-chairs of the Scientific Program Committee, for their leadership and strong support. We are in Geneva, Switzerland and I hope you find some time before or after the conference to enjoy this beautiful city and country. Hyeoun-Ae Park, PhD, RN, FAAN Chair, Scientific Program Committee, Professor in College of Nursing and Systems Biomedical Informatics Research Center, Seoul National University. PMID:27332498

  14. Decaying hidden dark matter in warped compactification

    SciTech Connect

    Chen, Xingang

    2009-09-01

    The recent PAMELA and ATIC/Fermi/HESS experiments have observed an excess of electrons and positrons, but not anti-protons, in the high energy cosmic rays. To explain this result, we construct a decaying hidden dark matter model in string theory compactification that incorporates the following two ingredients, the hidden dark matter scenario in warped compactification and the phenomenological proposal of hidden light particles that decay to the Standard Model. In this model, on higher dimensional warped branes, various warped Kaluza-Klein particles and the zero-mode of gauge field play roles of the hidden dark matter or mediators to the Standard Model.

  15. Administration for Community Living

    MedlinePlus

    ... by Acting Assistant Secretary for Aging and ACL Administrator Edwin Walker at the HCBS Conference (08/29/ ... Remarks by Assistant Secretary on Aging and ACL Administrator Kathy Greenlee at the n4a Answers on Aging ...

  16. The New Administrative Computing.

    ERIC Educational Resources Information Center

    Green, Kenneth C.

    1988-01-01

    The past decade has seen dramatic changes in administrative computing, including more systems, more applications, a new group of computer users, and new opportunities for computer use in campus administration. (Author/MSE)

  17. Transportation Security Administration

    MedlinePlus

    ... content Official website of the Department of Homeland Security Transportation Security Administration When I fly can I bring my... ... to know if you could bring through the security checkpoint. Main menu Administrator Travel Security Screening Special ...

  18. NASA, NOAA administrators nominated

    NASA Astrophysics Data System (ADS)

    Richman, Barbara T.

    President Ronald Reagan recently said he intended to nominate James Montgomery Beggs as NASA Administrator and John V. Byrne as NOAA Administrator. These two positions are key scientific posts that have been vacant since the start of the Reagan administration on January 20. The President also said he intends to nominate Hans Mark as NASA Deputy Administrator. At press time, Reagan had not designated his nominee for the director of the Office of Science and Technology Policy.

  19. A Philosophy of Administration.

    ERIC Educational Resources Information Center

    Bruening, William H.

    Justification is given for paying relatively large salaries to college administrators, specifically the president or chancellor and the chief academic officer. Three administrative task areas are discussed as criteria: management, administration per se, and leadership. It is contended that only leadership can be used as a criterion for…

  20. School Business Administration.

    ERIC Educational Resources Information Center

    Jordan, K. Forbis; And Others

    This textbook reviews the principal concerns within each of 13 major responsibility areas in school business administration. The first chapter assesses the political, social, and economic context in which schools function and school administrators work. The role and function of the school business administrator within this context is addressed in…

  1. Front Matter.

    PubMed

    2016-01-01

    ://www.inclusivedesigntoolkit.com/betterdesign2/whatis/whatis.html#p3b. . However in the guide itself, the definition is widened to include services: "the design of mainstream products and/or services that are accessible to, and usable by, as many people as reasonably possible without the need for special adaptation or specialised design" BS 7000-6, 2005. Design Management Systems: Managing Inclusive Design, BSi, London, UK. http://shop.bsigroup.com/en/ProductDetail/?pid=000000000030142267. . With the term Inclusive Design, the notion that the design is of mutual benefit to all stakeholders, as in Design for All, was lost. It is perhaps telling that the Scandinavian countries with their tradition of collaborative and participatory design are the main supporters of the term Design for All as the most appropriate one to use [6]. It is a term no longer in such evident use by the European Commission. However, it is notable that in the proposal for what is being more commonly referred to as the European Accessibility Act, there is a somewhat awkward paraphrase "Accessibility following a 'design for all' approach" Section 1.2, European Commission (2015) COM(2015) 615 final2015/0278 (COD) Proposal for a Directive of the European Parliament and of the Council on the approximation of the laws, regulations and administrative provisions of the Member States as regards the accessibility requirements for products and services. which could be understood as an attempt to keep the "mutual benefit" notion, since the Directive is not calling for human rights non-discriminatory legislation directly, but for support of the Single Market. (ABSTRACT TRUNCATED) PMID:27534368

  2. Spinor Structure and Matter Spectrum

    NASA Astrophysics Data System (ADS)

    Varlamov, V. V.

    2016-08-01

    Classification of relativistic wave equations is given on the ground of interlocking representations of the Lorentz group. A system of interlocking representations is associated with a system of eigenvector subspaces of the energy operator. Such a correspondence allows one to define matter spectrum, where the each level of this spectrum presents a some state of elementary particle. An elementary particle is understood as a superposition of state vectors in nonseparable Hilbert space. Classification of indecomposable systems of relativistic wave equations is produced for bosonic and fermionic fields on an equal footing (including Dirac and Maxwell equations). All these fields are equivalent levels of matter spectrum, which differ from each other by the value of mass and spin. It is shown that a spectrum of the energy operator, corresponding to a given matter level, is non-degenerate for the fields of type (l, 0) ⊕ (0, l), where l is a spin value, whereas for arbitrary spin chains we have degenerate spectrum. Energy spectra of the stability levels (electron and proton states) of the matter spectrum are studied in detail. It is shown that these stability levels have a nature of threshold scales of the fractal structure associated with the system of interlocking representations of the Lorentz group.

  3. States of Matter

    NASA Video Gallery

    NASA scientists and engineers utilize the basic principles of the states of matter on a daily basis. The states and properties of matter are very important to the design and construction of NASA sp...

  4. Asymmetric dark matter

    SciTech Connect

    Kumar, Jason

    2014-06-24

    We review the theoretical framework underlying models of asymmetric dark matter, describe astrophysical constraints which arise from observations of neutron stars, and discuss the prospects for detecting asymmetric dark matter.

  5. Mind Over Matter: Methamphetamine

    MedlinePlus

    ... Term(s): Teachers / NIDA Teaching Guide / Mind Over Matter Teaching Guide and Series / Methamphetamine Print Mind Over Matter: Methamphetamine (Meth) Order Free Publication in: English Spanish Download PDF 739.54 KB Methamphetamine comes in ...

  6. Mind Over Matter: Cocaine

    MedlinePlus

    ... Term(s): Teachers / NIDA Teaching Guide / Mind Over Matter Teaching Guide and Series / Cocaine Print Mind Over Matter: Cocaine Order Free Publication in: English Spanish Download PDF 806.08 KB Cocaine is made ...

  7. Nonthermal Supermassive Dark Matter

    NASA Technical Reports Server (NTRS)

    Chung, Daniel J. H.; Kolb, Edward W.; Riotto, Antonio

    1999-01-01

    We discuss several cosmological production mechanisms for nonthermal supermassive dark matter and argue that dark matter may he elementary particles of mass much greater than the weak scale. Searches for dark matter should ma be limited to weakly interacting particles with mass of the order of the weak scale, but should extend into the supermassive range as well.

  8. Dark matter and sterility

    NASA Astrophysics Data System (ADS)

    Smith, Peter F.

    2014-10-01

    In reply to Louise Mayor's dark-matter flow-chart "What's the matter?" (July pp30-31), which summarized the most likely candidates for galactic dark matter, and to Jon Cartwright's feature "A fourth type of neutrino" on the possibility of "sterile" neutrinos (August pp24-28).

  9. 5 CFR 2429.5 - Matters not previously presented; official notice.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 5 Administrative Personnel 3 2011-01-01 2011-01-01 false Matters not previously presented; official notice. 2429.5 Section 2429.5 Administrative Personnel FEDERAL LABOR RELATIONS AUTHORITY, GENERAL... REQUIREMENTS Miscellaneous § 2429.5 Matters not previously presented; official notice. The Authority will...

  10. 5 CFR 2429.5 - Matters not previously presented; official notice.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 5 Administrative Personnel 3 2012-01-01 2012-01-01 false Matters not previously presented; official notice. 2429.5 Section 2429.5 Administrative Personnel FEDERAL LABOR RELATIONS AUTHORITY, GENERAL... REQUIREMENTS Miscellaneous § 2429.5 Matters not previously presented; official notice. The Authority will...

  11. 5 CFR 2429.5 - Matters not previously presented; official notice.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 5 Administrative Personnel 3 2013-01-01 2013-01-01 false Matters not previously presented; official notice. 2429.5 Section 2429.5 Administrative Personnel FEDERAL LABOR RELATIONS AUTHORITY, GENERAL... REQUIREMENTS Miscellaneous § 2429.5 Matters not previously presented; official notice. The Authority will...

  12. 5 CFR 2429.5 - Matters not previously presented; official notice.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 5 Administrative Personnel 3 2010-01-01 2010-01-01 false Matters not previously presented; official notice. 2429.5 Section 2429.5 Administrative Personnel FEDERAL LABOR RELATIONS AUTHORITY, GENERAL... REQUIREMENTS Miscellaneous § 2429.5 Matters not previously presented; official notice. The Authority will...

  13. 5 CFR 2429.5 - Matters not previously presented; official notice.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 5 Administrative Personnel 3 2014-01-01 2014-01-01 false Matters not previously presented; official notice. 2429.5 Section 2429.5 Administrative Personnel FEDERAL LABOR RELATIONS AUTHORITY, GENERAL... REQUIREMENTS Miscellaneous § 2429.5 Matters not previously presented; official notice. The Authority will...

  14. 18 CFR 385.1304 - Procedure governing matters referred to a board (Rule 1304).

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... matter arising in the administration either of the Natural Gas Act or Part II of the Federal Power Act... by such matter, the procedure will be as follows: The Commission will send a request to each... particular matter to such board, and such order will fix the time and place of hearing, define the “force...

  15. 18 CFR 385.1304 - Procedure governing matters referred to a board (Rule 1304).

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... matter arising in the administration either of the Natural Gas Act or Part II of the Federal Power Act... by such matter, the procedure will be as follows: The Commission will send a request to each... particular matter to such board, and such order will fix the time and place of hearing, define the “force...

  16. 18 CFR 385.1304 - Procedure governing matters referred to a board (Rule 1304).

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... matter arising in the administration either of the Natural Gas Act or Part II of the Federal Power Act... by such matter, the procedure will be as follows: The Commission will send a request to each... particular matter to such board, and such order will fix the time and place of hearing, define the “force...

  17. DPIS for warm dense matter

    SciTech Connect

    Kondo, K.; Kanesue, T.; Horioka, K.; Okamura, M.

    2010-05-23

    Warm Dense Matter (WDM) offers an challenging problem because WDM, which is beyond ideal plasma, is in a low temperature and high density state with partially degenerate electrons and coupled ions. WDM is a common state of matter in astrophysical objects such as cores of giant planets and white dwarfs. The WDM studies require large energy deposition into a small target volume in a shorter time than the hydrodynamical time and need uniformity across the full thickness of the target. Since moderate energy ion beams ({approx} 0.3 MeV/u) can be useful tool for WDM physics, we propose WDM generation using Direct Plasma Injection Scheme (DPIS). In the DPIS, laser ion source is connected to the Radio Frequency Quadrupole (RFQ) linear accelerator directly without the beam transport line. DPIS with a realistic final focus and a linear accelerator can produce WDM.

  18. Anderson and Condensed Matter Physics

    NASA Astrophysics Data System (ADS)

    Ramakrishnan, T. V.

    The legacy of P. W. Anderson, perhaps the most fertile and influential condensed matter physicist of the second half of the twentieth century, is briefly mentioned here. I note three pervasive values. They are: emergence with its constant tendency to surprise us and to stretch our imagination, the Baconian emphasis on the experimental moorings of modern science, and mechanism as the explanatory core. Out of his work, which is spread over more than six decades and in many ways has charted modern condensed matter physics, nearly a dozen seminal contributions, chosen idiosyncratically, are mentioned at the risk of leaving out many which may also have started subfields. Some of these are: antiferromagnestism and broken symmetry, superexchange and strong electron correlations, localization in disordered systems, gauge invariance and mass, and the resonating valence bond in magnetic systems as well as in high-temperature superconductivity...

  19. Swift Heavy Ions in Matter

    NASA Astrophysics Data System (ADS)

    Rothard, Hermann; Severin, Daniel; Trautmann, Christina

    2015-12-01

    The present volume contains the proceedings of the Ninth International Symposium on Swift Heavy Ions in Matter (SHIM). This conference was held in Darmstadt, from 18 to 21 May 2015. SHIM is a triennial series, which started about 25 years ago by a joint initiative of CIRIL - Caen and GSI - Darmstadt, with the aim of promoting fundamental and applied interdisciplinary research in the field of high-energy, heavy-ion interaction processes with matter. SHIM was successively organized in Caen (1989), Bensheim (1992), Caen (1995), Berlin (1998), Catania (2002), Aschaffenburg (2005), Lyon (2008), and Kyoto (2012). The conference attracts scientists from many different fields using high-energy heavy ions delivered by large accelerator facilities and characterized by strong and short electronic excitations.

  20. The physics of strange matter

    SciTech Connect

    Olinto, A.V. |

    1991-12-01

    Strange matter may be the ground state of matter. We review the phenomenology and astrophysical implications of strange matter, and discuss the possible ways for testing the strange matter hypothesis.

  1. Big Questions: Dark Matter

    ScienceCinema

    Lincoln, Don

    2014-08-07

    Carl Sagan's oft-quoted statement that there are "billions and billions" of stars in the cosmos gives an idea of just how much "stuff" is in the universe. However scientists now think that in addition to the type of matter with which we are familiar, there is another kind of matter out there. This new kind of matter is called "dark matter" and there seems to be five times as much as ordinary matter. Dark matter interacts only with gravity, thus light simply zips right by it. Scientists are searching through their data, trying to prove that the dark matter idea is real. Fermilab's Dr. Don Lincoln tells us why we think this seemingly-crazy idea might not be so crazy after all.

  2. Big Questions: Dark Matter

    SciTech Connect

    Lincoln, Don

    2013-12-05

    Carl Sagan's oft-quoted statement that there are "billions and billions" of stars in the cosmos gives an idea of just how much "stuff" is in the universe. However scientists now think that in addition to the type of matter with which we are familiar, there is another kind of matter out there. This new kind of matter is called "dark matter" and there seems to be five times as much as ordinary matter. Dark matter interacts only with gravity, thus light simply zips right by it. Scientists are searching through their data, trying to prove that the dark matter idea is real. Fermilab's Dr. Don Lincoln tells us why we think this seemingly-crazy idea might not be so crazy after all.

  3. The NSF Condensed Matter Physics Program

    NASA Astrophysics Data System (ADS)

    Sokol, Paul

    The Condensed Matter Physics (CMP) program in the NSF Division of Materials Research (DMR) supports experimental, as well as combined experiment and theory projects investigating the fundamental physics behind phenomena exhibited by condensed matter systems. CMP is the largest Individual Investigator Award program in DMR and supports a broad portfolio of research spanning both hard and soft condensed matter. Representative research areas include: 1) phenomena at the nano- to macro-scale including: transport, magnetic, and optical phenomena; classical and quantum phase transitions; localization; electronic, magnetic, and lattice structure or excitations; superconductivity; topological insulators; and nonlinear dynamics. 2) low-temperature physics: quantum fluids and solids; 1D & 2D electron systems. 3) soft condensed matter: partially ordered fluids, granular and colloid physics, liquid crystals, and 4) understanding the fundamental physics of new states of matter as well as the physical behavior of condensed matter under extreme conditions e.g., low temperatures, high pressures, and high magnetic fields. In this talk I will review the current CMP portfolio and discuss future funding trends for the program. I will also describe recent activities in the program aimed at addressing the challenges facing current and future principal investigators.

  4. Veterans Administration Databases

    Cancer.gov

    The Veterans Administration Information Resource Center provides database and informatics experts, customer service, expert advice, information products, and web technology to VA researchers and others.

  5. 75 FR 47548 - President's Export Council Subcommittee on Export Administration; Notice of Recruitment of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-06

    ...The President's Export Council Subcommittee on Export Administration (PECSEA) advises the U.S. Government on matters and issues pertinent to implementation of the provisions of the Export Administration Act and the Export Administration Regulations, as amended, and related statutes and regulations. These issues relate to U.S. export controls as mandated by law for national security, foreign......

  6. 75 FR 54857 - President's Export Council, Subcommittee on Export Administration; Notice of Recruitment of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-09

    ...The President's Export Council Subcommittee on Export Administration (PECSEA) advises the U.S. Government on matters and issues pertinent to implementation of the provisions of the Export Administration Act and the Export Administration Regulations, as amended, and related statutes and regulations. These issues relate to U.S. export controls as mandated by law for national security, foreign......

  7. 5 CFR 2423.24 - Powers and duties of the Administrative Law Judge during prehearing proceedings.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... Law Judge during prehearing proceedings. 2423.24 Section 2423.24 Administrative Personnel FEDERAL... duties of the Administrative Law Judge during prehearing proceedings. (a) Prehearing procedures. The Administrative Law Judge shall regulate the course and scheduling of prehearing matters, including...

  8. 15 CFR 280.218 - Decision of the administrative law judge.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 15 Commerce and Foreign Trade 1 2013-01-01 2013-01-01 false Decision of the administrative law... ASSESSMENT PROGRAMS FASTENER QUALITY Enforcement § 280.218 Decision of the administrative law judge. (a) Predecisional matters. Except for default proceedings under § 280.208 of this part, the administrative law...

  9. 15 CFR 280.218 - Decision of the administrative law judge.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 15 Commerce and Foreign Trade 1 2010-01-01 2010-01-01 false Decision of the administrative law... ASSESSMENT PROGRAMS FASTENER QUALITY Enforcement § 280.218 Decision of the administrative law judge. (a) Predecisional matters. Except for default proceedings under § 280.208 of this part, the administrative law...

  10. 15 CFR 280.218 - Decision of the administrative law judge.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 15 Commerce and Foreign Trade 1 2011-01-01 2011-01-01 false Decision of the administrative law... ASSESSMENT PROGRAMS FASTENER QUALITY Enforcement § 280.218 Decision of the administrative law judge. (a) Predecisional matters. Except for default proceedings under § 280.208 of this part, the administrative law...

  11. 15 CFR 280.218 - Decision of the administrative law judge.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 15 Commerce and Foreign Trade 1 2012-01-01 2012-01-01 false Decision of the administrative law... ASSESSMENT PROGRAMS FASTENER QUALITY Enforcement § 280.218 Decision of the administrative law judge. (a) Predecisional matters. Except for default proceedings under § 280.208 of this part, the administrative law...

  12. 15 CFR 280.218 - Decision of the administrative law judge.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 15 Commerce and Foreign Trade 1 2014-01-01 2014-01-01 false Decision of the administrative law... ASSESSMENT PROGRAMS FASTENER QUALITY Enforcement § 280.218 Decision of the administrative law judge. (a) Predecisional matters. Except for default proceedings under § 280.208 of this part, the administrative law...

  13. Exotic States of Nuclear Matter

    NASA Astrophysics Data System (ADS)

    Lombardo, Umberto; Baldo, Marcello; Burgio, Fiorella; Schulze, Hans-Josef

    2008-02-01

    ência et al. Quartetting in nuclear matter and [symbol] particle condensation in nuclear systems / G. Röpke & P. Schuck et al. -- pt. C. Neutron star structure and dynamics. Shear viscosity of neutron matter from realistic nuclear interactions / O. Benhar & M. Valli. Protoneutron star dynamo: theory and observations / A. Bonanno & V. Urpin. Magnetic field dissipation in neutron stars: from magnetars to isolated neutron stars / J. A. Pons. Gravitational radiation and equations of state in super-dense cores of core-collapse supernovae / K. Kotake. Joule heating in the cooling of magnetized neutron stars / D. N. Aguilera, J. A. Pons & J. A. Miralles. Exotic fermi surface of dense neutron matter / M. V. Zverev, V. A. Khodel & J. W. Clark. Coupling of nuclear and electron modes in relativistic stellar matter / A. M. S. Santos et al. Neutron stars in the relativistic Hartree-Fock theory and hadron-quark phase transition / B. Y. Sun ... [et al.] -- pt. D. Prospects of present and future observations. Measurements of neutron star masses / D. G. Yakovlev. Dense nuclear matter: constraints from neutron stars / J. M. Lattimer. Neutron star versus heavy-ion data: is the nuclear equation of state hard or soft? / J. Schaffner-Bielich ... [et al.]. Surface emission from x-ray dim isolated neutron stars / R. Turolla. High energy neutrino astronomy / E. Migneco. What gravitational waves say about the inner structure of neutron stars / V. Ferrari. Reconciling 2 M[symbol] pulsars and SN1987A: two branches of neutron stars / P. Haensel, M. Bejger & J. L. Zdunik. EOS of dense matter and fast rotation of neutron stars / J. L. Zdunik ... [et al.] -- pt. E. Quark and strange matter in neutron stars. Bulk viscosity of color-superconducting quark matter / M. Alford. Chiral symmetry restoration and quark deconfinement at large densities and temperature / A. Drago, L. Bonanno & A. Lavagno. Color superconducting quark matter in compact stars / D. B. Blaschke, T. Klähn & F. Sandin. Thermal

  14. Modeling Soft Matter

    NASA Astrophysics Data System (ADS)

    Kremer, Kurt

    Soft matter science or soft materials science is a relatively new term for the science of a huge class of rather different materials such as colloids, polymers (of synthetic or biological origin), membranes, complex molecular assemblies, complex fluids, etc. and combinations thereof. While many of these systems are contained in or are even the essential part of everyday products ("simple" plastics such as yoghurt cups, plastic bags, CDs, many car parts; gels and networks such as rubber, many low fat foods, "gummi" bears; colloidal systems such as milk, mayonnaise, paints, almost all cosmetics or body care products, the border lines between the different applications and systems are of course not sharp) or as biological molecules or assemblies (DNA, proteins, membranes and cytoskeleton, etc.) are central to our existence, others are basic ingredients of current and future high tech products (polymers with specific optical or electronic properties, conducting macromolecules, functional materials). Though the motivation is different in life science rather than in materials science biomolecular simulations, the basic structure of the problems faced in the two fields is very similar.

  15. Cosmic Ray Spectra in Nambu-Goldstone Dark Matter Models

    SciTech Connect

    Ibe, Masahiro; Murayama, Hitoshi; Shirai, Satoshi; Yanagida, Tsutomu T.; ,

    2010-06-11

    We discuss the cosmic ray spectra in annihilating/decaying Nambu-Goldstone dark matter models. The recent observed positron/electron excesses at PAMELA and Fermi experiments are well fitted by the dark matter with a mass of 3TeV for the annihilating model, while with a mass of 6TeV for the decaying model. We also show that the Nambu-Goldstone dark matter models predict a distinctive gamma-ray spectrum in a certain parameter space.

  16. Shocking signals of dark matter annihilation

    NASA Astrophysics Data System (ADS)

    Davis, Jonathan H.; Silk, Joseph; BÅ`hm, Céline; Kotera, Kumiko; Norman, Colin

    2016-05-01

    We examine whether charged particles injected by self-annihilating dark matter (DM) into regions undergoing diffuse shock acceleration can be accelerated to high energies. We consider three astrophysical sites where shock acceleration is supposed to occur, namely the Galactic center and galaxy cluster mergers. For the Milky Way, we find that the acceleration of cosmic rays injected by dark matter could lead to a bump in the cosmic ray spectrum provided that the product of the efficiency of the acceleration mechanism and the concentration of DM particles is high enough. Within the Galaxy, we find that the Fermi bubbles are a potentially more efficient accelerator than supernovae remnants. However, both could in principle accelerate electrons and protons injected by dark matter to very high energies. At the extragalactic level, the acceleration of dark matter annihilation products could be responsible for enhanced radio emission from colliding clusters.

  17. Interaction of Radiation with Matter

    NASA Astrophysics Data System (ADS)

    Horváth, D.; Vértes, A.

    The effects of interactions of the various kinds of nuclear radiation with matter are summarized with special emphasis on relations to nuclear chemistry and possible applications. The Bethe-Bloch theory describes the slowing down process of heavy charged particles via ionization, and it is modified for electrons and photons to include radiation effects like bremsstrahlung and pair production. Special emphasis is given to processes involved in particle detection, the Cherenkov effect and transition radiation. Useful formulae, numerical constants, and graphs are provided to help calculations of the stopping power of particles in simple and composite materials.

  18. Attraction by Repulsion: Pairing Electrons using Electrons

    NASA Astrophysics Data System (ADS)

    Ilani, Shahal

    One of the fundamental properties of electrons is their mutual Columbic repulsion. If electrons are placed in a solid, however, this basic property may change. A famous example is that of superconductors, where coupling to lattice vibrations makes electrons attractive and leads to the formation of bound pairs. But what if all the degrees of freedom in the solid are electronic? Is it possible to make electrons attract each other only by their repulsion to other electrons? Such an `excitonic' mechanism for attraction was proposed fifty years ago by W. A. Little, with the hope that it could lead to better and more exotic superconductivity. Yet, despite many efforts to synthesize materials that possess this unique property, to date there is still no evidence for electronic-based attraction. In this talk I will present our recent experiments that observe this unusual electronic attraction using a different, bottom-up approach. Our experiments are based on a new generation of quantum devices made from pristine carbon nanotubes, combined with precision cryogenic manipulation. Using this setup we can now assemble the fundamental building block of the excitonic attraction and demonstrate that two electrons that naturally repel each other can be made attractive using an independent electronic system as the binding glue. I will discuss the lessons learned from these experiments on what is achievable with plain electrostatics, and on the possibility to use the observed mechanism for creating exotic states of matter.

  19. Condensed Matter Nuclear Science

    NASA Astrophysics Data System (ADS)

    Biberian, Jean-Paul

    2006-02-01

    1. General. A tribute to gene Mallove - the "Genie" reactor / K. Wallace and R. Stringham. An update of LENR for ICCF-11 (short course, 10/31/04) / E. Storms. New physical effects in metal deuterides / P. L. Hagelstein ... [et al.]. Reproducibility, controllability, and optimization of LENR experiments / D. J. Nagel -- 2. Experiments. Electrochemistry. Evidence of electromagnetic radiation from Ni-H systems / S. Focardi ... [et al.]. Superwave reality / I. Dardik. Excess heat in electrolysis experiments at energetics technologies / I. Dardik ... [et al.]. "Excess heat" during electrolysis in platinum/K[symbol]CO[symbol]/nickel light water system / J. Tian ... [et al.]. Innovative procedure for the, in situ, measurement of the resistive thermal coefficient of H(D)/Pd during electrolysis; cross-comparison of new elements detected in the Th-Hg-Pd-D(H) electrolytic cells / F. Celani ... [et al.]. Emergence of a high-temperature superconductivity in hydrogen cycled Pd compounds as an evidence for superstoihiometric H/D sites / A. Lipson ... [et al.]. Plasma electrolysis. Calorimetry of energy-efficient glow discharge - apparatus design and calibration / T. B. Benson and T. O. Passell. Generation of heat and products during plasma electrolysis / T. Mizuno ... [et al.]. Glow discharge. Excess heat production in Pd/D during periodic pulse discharge current in various conditions / A. B. Karabut. Beam experiments. Accelerator experiments and theoretical models for the electron screening effect in metallic environments / A. Huke, K. Czerski, and P. Heide. Evidence for a target-material dependence of the neutron-proton branching ratio in d+d reactions for deuteron energies below 20keV / A. Huke ... [et al.]. Experiments on condensed matter nuclear events in Kobe University / T. Minari ... [et al.]. Electron screening constraints for the cold fusion / K. Czerski, P. Heide, and A. Huke. Cavitation. Low mass 1.6 MHz sonofusion reactor / R. Stringham. Particle detection. Research

  20. EDITORIAL: Focus on Dark Matter and Particle Physics

    NASA Astrophysics Data System (ADS)

    Aprile, Elena; Profumo, Stefano

    2009-10-01

    The quest for the nature of dark matter has reached a historical point in time, with several different and complementary experiments on the verge of conclusively exploring large portions of the parameter space of the most theoretically compelling particle dark matter models. This focus issue on dark matter and particle physics brings together a broad selection of invited articles from the leading experimental and theoretical groups in the field. The leitmotif of the collection is the need for a multi-faceted search strategy that includes complementary experimental and theoretical techniques with the common goal of a sound understanding of the fundamental particle physical nature of dark matter. These include theoretical modelling, high-energy colliders and direct and indirect searches. We are confident that the works collected here present the state of the art of this rapidly changing field and will be of interest to both experts in the topic of dark matter as well as to those new to this exciting field. Focus on Dark Matter and Particle Physics Contents DARK MATTER AND ASTROPHYSICS Scintillator-based detectors for dark matter searches I S K Kim, H J Kim and Y D Kim Cosmology: small-scale issues Joel R Primack Big Bang nucleosynthesis and particle dark matter Karsten Jedamzik and Maxim Pospelov Particle models and the small-scale structure of dark matter Torsten Bringmann DARK MATTER AND COLLIDERS Dark matter in the MSSM R C Cotta, J S Gainer, J L Hewett and T G Rizzo The role of an e+e- linear collider in the study of cosmic dark matter M Battaglia Collider, direct and indirect detection of supersymmetric dark matter Howard Baer, Eun-Kyung Park and Xerxes Tata INDIRECT PARTICLE DARK MATTER SEARCHES:EXPERIMENTS PAMELA and indirect dark matter searches M Boezio et al An indirect search for dark matter using antideuterons: the GAPS experiment C J Hailey Perspectives for indirect dark matter search with AMS-2 using cosmic-ray electrons and positrons B Beischer, P von

  1. CDS - Database Administrator's Guide

    NASA Astrophysics Data System (ADS)

    Day, J. P.

    This guide aims to instruct the CDS database administrator in: o The CDS file system. o The CDS index files. o The procedure for assimilating a new CDS tape into the database. It is assumed that the administrator has read SUN/79.

  2. Vocational Education Administration Handbook.

    ERIC Educational Resources Information Center

    Ryals, Karen, Ed.; Doherty, Susan Sloan, Ed.

    This handbook for vocational administrators presents an overview of vocational education programs, services, and administrative structures in Alaska. The manual contains three parts. The first, brief section introduces secondary vocational education and lists its enabling legislation. The second part presents a detailed overview of vocational…

  3. Reframing Research Administration

    ERIC Educational Resources Information Center

    Cole, Sharon Stewart

    2010-01-01

    The purpose of this paper is to inform administrators and organizational leaders that a change in the support offered to faculty and the environment of research administration is desirable. This recommendation is supported by the results of a Delphi study that was undertaken to gather expert opinions and recommendations from research faculty…

  4. Justifying Educational Administration.

    ERIC Educational Resources Information Center

    Evers, Colin; Lakomski, Gabriele

    1993-01-01

    The traditional conceptions of science dominating educational administration are mistaken. Unacceptable epistemologies, like those implicit in logical positivism, justify knowledge solely in terms of empirical adequacy. An improved science of educational administration embraces a coherent global theory accounting for all the phenomena of human…

  5. Migrant Education Administrative Guide.

    ERIC Educational Resources Information Center

    North Carolina State Dept. of Public Instruction, Raleigh. Div. of Compensatory Education.

    Relating specifically to the North Carolina migrant education program's administrative responsibilities, this guide is designed to aid administrators in program management, monitoring project activities, project evaluation, self-assessment, determining needs for training and staff development, site-visit preparation, policy development, and…

  6. DIMENSIONS OF ADMINISTRATIVE PERFORMANCE.

    ERIC Educational Resources Information Center

    HEMPHILL, JOHN; AND OTHERS

    THE MAJOR OBJECTIVES WERE TO DEVELOP CRITERIA FOR THE EVALUATION OF SCHOOL ADMINISTRATION, TO DEFINE THE NATURE OF THE JOB, AND TO DEVELOP AN INSTRUMENT FOR THE SELECTION OF ADMINISTRATORS. THE ELEMENTARY SCHOOL PRINCIPAL WAS CHOSEN FOR THE STUDY BECAUSE OF THE HOST OF PROBLEMS RELATED TO THE CONDUCT OF AN EDUCATIONAL PROGRAM, INCLUDING THE…

  7. Test Administration Models

    ERIC Educational Resources Information Center

    Becker, Kirk A.; Bergstrom, Betty A.

    2013-01-01

    The need for increased exam security, improved test formats, more flexible scheduling, better measurement, and more efficient administrative processes has caused testing agencies to consider converting the administration of their exams from paper-and-pencil to computer-based testing (CBT). Many decisions must be made in order to provide an optimal…

  8. Networked Administration Streamlines Operations.

    ERIC Educational Resources Information Center

    School Planning and Management, 1996

    1996-01-01

    An Iowa school district has retooled its computer systems for more standardized administration. In addition to administration, the district is doing inhouse databasing of financial accounting, and doing inhouse scheduling and grade reporting. A partnership with the Chamber of Commerce contributed $500,000 for the network system. (MLF)

  9. The Administrative Power Grab

    ERIC Educational Resources Information Center

    Sorenson, Richard D.

    2007-01-01

    Administrative power for some school teachers can be an aphrodisiac that can be applied negatively, especially when a leader has devastating instinct for the weaknesses of others. A leader's intellect and heart closes shop and ceases to function when drunk on power. In this article, the author describes how the use of administrative power can be…

  10. Champions of Children. Administrators . . .

    ERIC Educational Resources Information Center

    Chaffee, John; Olds, H. Robert

    Today, in an era of taxpayer revolts, lack of clarity in values, and changing family structure, children need advocates in the political arena as well as in the schools. This pamphlet suggests that administrators are in an excellent position to defend the rights of children on all fronts. It focuses on what administrators have done and specific…

  11. Administration for Student Development.

    ERIC Educational Resources Information Center

    Bergen, J. J., Ed.

    This collection of papers focuses on school administration and its relation to students. It is contended that toay's student matures earlier; has higher expectations; is more affluent; is more isolated from adults; is more critical and outspoken; and, therefore, must be heard by teachers and administrators. A related document is EA 001578.…

  12. Administration of Computer Resources.

    ERIC Educational Resources Information Center

    Franklin, Gene F.

    Computing at Stanford University has, until recently, been performed at one of five facilities. The Stanford hospital operates an IBM 370/135 mainly for administrative use. The university business office has an IBM 370/145 for its administrative needs and support of the medical clinic. Under the supervision of the Stanford Computation Center are…

  13. Rural Administrative Leadership Handbook.

    ERIC Educational Resources Information Center

    Tift, Carolyn

    This resource book on rural administrative leadership is the result of 1988 interviews with school administrators involved in successful rural educational programs. The material is divided into eight chapters, each self-contained for separate use. Chapter 1, "Getting to Know the Community," addresses qualities of living and working in rural…

  14. The Administrative Team.

    ERIC Educational Resources Information Center

    Ohio Association of Elementary School Principals, Westerville.

    Although needs of school districts vary with size, degree of teacher negotiation procedures, and type of community involvement, the administrative team model is presented as an effective, appropriate administrative organization. Based on an assumption that each level of authority in a school district possesses and exercises expertise and unique…

  15. Handbook for Alumni Administration.

    ERIC Educational Resources Information Center

    Webb, Charles H., Ed.

    A definitive look at the field of alumni administration is presented, noting that the subject has until now received little attention. The 34 chapters are divided into nine sections: an overview of alumni administration; alumni as an essential resource; people management; budget and records; programming; communications; alumni education programs…

  16. Basic Electronics II.

    ERIC Educational Resources Information Center

    Willison, Neal A.; Shelton, James K.

    Designed for use in basic electronics programs, this curriculum guide is comprised of 15 units of instruction. Unit titles are Review of the Nature of Matter and the P-N Junction, Rectifiers, Filters, Special Semiconductor Diodes, Bipolar-Junction Diodes, Bipolar Transistor Circuits, Transistor Amplifiers, Operational Amplifiers, Logic Devices,…

  17. Nonadiabatic three-neutrino oscillations in matter

    SciTech Connect

    DOlivo, J.C.; Oteo, J.A.

    1996-07-01

    Oscillations of three neutrinos in matter are analyzed by using the Magnus expansion for the time-evolution operator. We derive a simple expression for the electron-neutrino survival probability which is applied to the examination of the effect of a third neutrino on the nonadiabatic flavor transformations. {copyright} {ital 1996 The American Physical Society.}

  18. 47 CFR 54.715 - Administrative expenses of the Administrator.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 3 2011-10-01 2011-10-01 false Administrative expenses of the Administrator. 54.715 Section 54.715 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES (CONTINUED) UNIVERSAL SERVICE Administration § 54.715 Administrative expenses of the Administrator. (a) The annual administrative expenses...

  19. 47 CFR 54.715 - Administrative expenses of the Administrator.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 3 2010-10-01 2010-10-01 false Administrative expenses of the Administrator. 54.715 Section 54.715 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES (CONTINUED) UNIVERSAL SERVICE Administration § 54.715 Administrative expenses of the Administrator. (a) The annual administrative expenses...

  20. Constraining decaying dark matter with Fermi LAT gamma-rays

    SciTech Connect

    Zhang, Le; Sigl, Günter; Weniger, Christoph; Maccione, Luca; Redondo, Javier E-mail: christoph.weniger@desy.de E-mail: redondo@mppmm.mpg.de

    2010-06-01

    High energy electrons and positrons from decaying dark matter can produce a significant flux of gamma rays by inverse Compton off low energy photons in the interstellar radiation field. This possibility is inevitably related with the dark matter interpretation of the observed PAMELA and FERMI excesses. The aim of this paper is providing a simple and universal method to constrain dark matter models which produce electrons and positrons in their decay by using the Fermi LAT gamma-ray observations in the energy range between 0.5 GeV and 300 GeV. We provide a set of universal response functions that, once convolved with a specific dark matter model produce the desired constraints. Our response functions contain all the astrophysical inputs such as the electron propagation in the galaxy, the dark matter profile, the gamma-ray fluxes of known origin, and the Fermi LAT data. We study the uncertainties in the determination of the response functions and apply them to place constraints on some specific dark matter decay models that can well fit the positron and electron fluxes observed by PAMELA and Fermi LAT. To this end we also take into account prompt radiation from the dark matter decay. We find that with the available data decaying dark matter cannot be excluded as source of the PAMELA positron excess.