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1

Teaching Labor Relations with "Norma Rae"  

ERIC Educational Resources Information Center

|Undergraduate business students in North America are often unfamiliar with the labor organizing process and frequently fail to identify with the reasons why workers join unions. This article suggests a discussion exercise based on the 1979 film, "Norma Rae," by 20th Century Fox, as an effective tool for familiarizing students with fundamental…

Taylor, Vicki Fairbanks; Provitera, Michael J.

2011-01-01

2

New approach for quantitation of short echo time in vivo 1H MR spectra of brain using AMARES.  

PubMed

Short echo time in vivo STEAM 1H MR spectra (4.7 T, TE = 16 ms) of normal rat brain were fitted in the time domain using a VARPRO-like algorithm called AMARES which allows an inclusion of a large amount of prior knowledge. The prior knowledge was derived from phantom spectra of pure metabolite solutions measured under the same experimental conditions as the in vivo spectra. The prior knowledge for the in vivo spectra was constructed as follows: for each VARPRO-fitted phantom spectrum one peak (the most prominent one in the in vivo spectrum) was chosen and left unconstrained in the AMARES fitting while all the other peaks in the metabolite spectrum (i.e. their corresponding parameters--amplitudes, damping factors, frequencies and phases) were fixed to the parameter values of the unconstrained peak via amplitude and damping ratios and frequency and phase shifts. Including N-acetyl-aspartate, glutamate, total creatine, cholines, glucose and myo-inositol into the fits provided results which were in agreement with published data. An inclusion of glutamine into the set of fitted metabolites was also investigated. PMID:9608586

Mierisová, S; van den Boogaart, A; Tkác, I; Van Hecke, P; Vanhamme, L; Liptaj, T

1998-02-01

3

NIR Ks photometry of Norma cluster (A3627) (Skelton+, 2009)  

NASA Astrophysics Data System (ADS)

A survey of the Norma cluster in the NIR was undertaken with the Simultaneous three-colour InfraRed Imager for Unbiased Surveys (SIRIUS) on the Infrared Survey Facility (IRSF), the 1.4-m Japanese telescope at the South African Astronomical Observatory (SAAO) site in Sutherland. The observations were made during three observing runs in June and July 2001 and July 2002. (1 data file).

Skelton, R. E.; Woudt, P. A.; Kraan-Korteweg, R. C.

2010-08-01

4

Low Mass Star Formation in the Norma Cloud  

Microsoft Academic Search

A small filamentary cloud in Norma hosts a number of young low-mass stars in various stages of evolution, from visible Halpha emission stars to embedded sources detected only in the sub-millimeter regime. The best known source is V346 Nor, an FU Orionis star that brightened in the early 1980s. The morphology of the cloud complex and an apparent age gradient

B. Reipurth; M. Nielbock

2008-01-01

5

U-Pb zircon geochronology and geological evolution of the Halaban- Al Amar region of the eastern Arabian Shield, Kingdom of Saudi Arabia.  

USGS Publications Warehouse

U/Pb zircon model ages for 11 major units from this region indicate three stages of evolution: 1) plate convergence, 2) plate collision and 3) post-orogenic intracratonic activity. Convergence occurred between the western Afif and eastern Ar Rayn plates that were separated by oceanic crust. Remnants of crust now comprise the ophiolitic complexes of the Urd group; the oldest plutonic unit studied is from one such complex, and gave an age of 694-698 m.y., while detrital zircons from an intercalated sedimentary formation were derived from source rocks with a mean age of 710 m.y. Plate convergence was terminated by collision of the two plates during the Al Amar orogeny which began at -670 m.y.; during collision, the Urd group rocks were deformed and in part obducted on to one or other of the plates. Synorogenic granitic rocks were intruded from 670 to 640 m.y., followed from 640 to 630 m.y. by unfoliated dioritic plutons emplaced in the Ar Rayn block.-R.A.H.

Stacey, J. S.; Stoeser, D. B.; Greenwood, W. R.; Fischer, L. B.

1984-01-01

6

Librarian of the Year 2008: New Jersey State Librarian Norma Blake  

ERIC Educational Resources Information Center

|This article profiles "Library Journal's" (LJ) chosen 2008 Librarian of the Year. Librarians and officials in education and government all recount the leadership and creativity brought to library service in New Jersey by State Librarian Norma Blake. She has sparked proactive, collaborative initiatives that have taken libraries of all types "out…

Berry, John N., III

2008-01-01

7

Proceedings of the Nordic Conference on Mathematics Teaching (NORMA-94) Lahti 1994. Research Report 141.  

ERIC Educational Resources Information Center

|This report contains papers from the Nordic Conference on Mathematics Teaching (NORMA-94). The first three papers are plenary talks aimed at giving the participants an opportunity to form a coherent view of the new theories of learning. The themes of the paper sessions addressed a variety of topics on different levels from elementary school to…

Pehkonen, Erkki, Ed.

8

Proceedings of the Nordic Conference on Mathematics Teaching (NORMA-94) Lahti 1994. Research Report 141.  

ERIC Educational Resources Information Center

This report contains papers from the Nordic Conference on Mathematics Teaching (NORMA-94). The first three papers are plenary talks aimed at giving the participants an opportunity to form a coherent view of the new theories of learning. The themes of the paper sessions addressed a variety of topics on different levels from elementary school to…

Pehkonen, Erkki, Ed.

9

Norma-System: A Legal Document System for Managing Consolidated Acts  

Microsoft Academic Search

The time element inherent in normative systems has become a central topic of the cultural and political debate and is of fundamental\\u000a concern to legal computer science. The law is under increasing pressure to keep pace with social change: normative texts and\\u000a amendments follow one another in time and get overlapped. Given this background the Norma-System project, presented in this

Monica Palmirani; Raffaella Brighi

2002-01-01

10

Preliminary Results of a Chandra X-ray Survey of the Norma Spiral Arm  

NASA Astrophysics Data System (ADS)

We present preliminary results of an X-ray survey of a 2° by 0.8° region of the Norma spiral arm observed by the ACIS instrument on the Chandra X-Ray Observatory. The primary scientific goal of this survey is to find new High-Mass X-ray Binaries (HMXBs) to further our understanding of HMXB evolution, help constrain estimates of the NS/NS, NS/BH, and BH/BH binaries in the Galaxy for Advanced-LIGO studies, and probe the faint end of the HMXB luminosity function. This region was selected because hard X-ray imaging of the Galactic plane by the INTErnational Gamma-Ray Astrophysics Laboratory (INTEGRAL) showed that, after the Galactic Center, the Norma spiral arm is the region most crowded with hard X-ray sources. Furthermore, this region contains a large number of OB associations and Spitzer 8 ?m images and radio maps show that it is a region of ongoing star formation, near which we would expect to find HMXBs. Our preliminary data analysis has uncovered 1,500 X-ray sources in this field. Approximately 30 of these sources are bright, hard X-ray sources, having more than 50 counts in a 20 ks exposure, making them plausible HMXB candidates. Near-infrared imaging and spectroscopic follow-up will help us determine the true nature of these hard X-ray sources. Our Chandra survey also includes two previously identified HMXBs and at least five extended sources, one of which is a previously studied pulsar wind nebula. Our final catalog will be useful for studies of individual X-ray sources, serve as a companion and comparison to similar surveys of X-ray populations in different regions of the Galaxy, and provide identifications for hard X-ray sources found when the Nuclear Spectroscopic Telescope ARray (NuSTAR) surveys this region after its launch in early 2012.

Fornasini, Francesca; Tomsick, J. A.; Gotthelf, E. V.; Bodaghee, A.; Boggs, S. E.; Rahoui, F.; Kaspi, V. M.

2012-01-01

11

Avaliação das normas de biossegurança nas clínicas odonto- lógicas da UFPE Evaluation of biosecutrity norms in UFPE dental clinics  

Microsoft Academic Search

Key-words O objetivo deste trabalho foi observar o cumprimento das normas de biossegurança e os cuidados com os riscos ocupacionais pelos alunos que atenderam nas clínicas de Odontologia Preventiva, Odontopediatria, Dentística, Endodontia e nos procedimentos cirúrgicos nas clínicas de Periodontia e Cirurgia, da Faculdade de Odontologia da Universidade Federal de Pernambuco. Este trabalho consistiu em um estudo observacional, no qual

Márcia Maria; Vendiciano Barbosa Vasconcelos; Catarina da Mot; Vasconcelos Brasi; Cláudia Cristina; Brainer de Oliveira Mot; Rabelo de Carvalho

12

Cranial vault shape in fossil hominids: Fourier descriptors in norma lateralis.  

PubMed

Two major views of human evolution have elicited considerable controversy. These are: [1] the "out of Africa" hypothesis and [2] the "multiregional" hypothesis. This paper is an attempt to try to reconcile these two scenarios using hominid cranial vault data. Elliptical Fourier functions (EFFs) were used to describe, in visual and numerical terms, the shape of the human cranial vault in norma lateralis. Using jpeg images, contours of the cranial vault of a large sample of hominid specimens were pre-processed in Photoshop CS and rotated in 2D space (positional-orientation) so that a line drawn from nasion to porion was horizontal. The cranial vault image was then digitized with 72 closely-spaced points and submitted to a specially written routine that computed EFFs normalized by scaling (size-standardization). This ensured that the representation was invariant with respect to starting point, size and orientation. Statistically significant differences were found between the H. sapiens sample and both the H. erectus and H. neanderthalensis samples. In contrast, there were no statistically significant differences between the H. erectus and H. neanderthalensis groups, leading to three conclusions: [1] the similarity in cranial vault shape between H. erectus and H. neanderthalensis suggests a single gradually evolving lineage; [2] The taxon H. heidelbergensis can be embedded into the H. erectus?H. neanderthalensis line; and [3] H. sapiens seems to be a separate evolutionary development and is considered here either as a separate species or as a possible example of an allopatric semispecies (Grant, 1977). The results here suggest that human evolution over the last 2 Ma may turn out to be neither totally multiregional or simply out of Africa but rather represents a considerably more complicated picture. PMID:20801442

Lestrel, P E; Ohtsuki, F; Wolfe, C A

2010-10-01

13

Norma Vanderhorst Labeling Specialist GE Healthcare 101 ...  

Center for Drug Evaluation (CDER)

Text Version... with an autonomously functioning thyroid nodule; use ... potential delayed hemodynamic renal function disturbances in ... toward fewer patient reports of ... More results from www.fda.gov/downloads/drugs/guidancecomplianceregulatoryinformation

14

NORMAS DE BUENAS PRÁCTICAS CLÍNICAS (BPC)  

Center for Biologics Evaluation and Research (CBER)

Text Version... Unión Europea, Japón y los Estados Unidos, así como las de Australia, Canadá, los países Nórdicos y la Organización Mundial de la Salud (OMS). ... More results from www.fda.gov/downloads/drugs/guidancecomplianceregulatoryinformation

15

Revisión General de la Norma Final Provisional de Registro ...  

Center for Food Safety and Applied Nutrition (CFSAN)

... Implementando la Ley de Bioterrorismo. Octubre 2003. También está disponible en Inglés (English) y Francés (French). -. Power Point. ... More results from www.fda.gov/food/guidanceregulation/foodfacilityregistration

16

Hoja Informativa Sobre la Nueva Norma de la FDA en ...  

Center for Food Safety and Applied Nutrition (CFSAN)

... la Salud Pública y Preparación y Respuesta ante el Bioterrorismo del 2002 (la Ley de Bioterrorismo) orienta las medidas y acciones del Secretario ... More results from www.fda.gov/food/guidanceregulation/foodfacilityregistration

17

Mandibular shape analysis in fossil hominins: Fourier descriptors in norma lateralis.  

PubMed

Biological shape can be defined as the boundary of a form in 2-space (R(2)). An earlier study (Lestrel et al., 2010, HOMO-J. Comp. Hum. Biol.) of the cranial vault found that there were statistically significant differences between each of the three groups: H. erectus, H. heidelbergensis, and H. neanderthalensis compared with H. sapiens. In contrast, there was no statistically significant difference among the first three groups. These results suggest that these three groups may have formed single evolving lineage while H. sapiens represents a separate evolutionary development. The purpose of the current research was to discern if the mandible reflected a similar pattern as the cranial vault data. This study used lateral jpeg images of the mandible. Five fossil samples were used: A. robustus (n=7), H. erectus (n=12), H. heidelbergensis (n=4), H. neanderthalensis (n=22) and H. sapiens (n=61). Each mandible image was pre-processed with Photoshop Elements. Each image was then submitted to a specially written routine that digitized the 84 points along the mandible boundary. Each mandible was fitted with elliptical Fourier functions (EFFs). Procrustes superimposition was imposed to insure minimum shape differences. The mandible results largely mirrored the earlier cranial vault study with one exception. Statistically significant results were obtained for the mandible between the H. erectus and H. neanderthalensis samples in contrast to the earlier cranial vault data. F-tests disclosed that the statistical significance was limited to the anterior symphysis of the mandible. This mosaic pattern may be explained by the reduction in prognathism with the concomitant if rudimentary development of the chin as seen in H. neanderthalensis compared to H. erectus. PMID:23769600

Lestrel, P E; Wolfe, C A; Bodt, A

2013-06-14

18

Norma J. Kriger - Liberation from Constitutional Constraints: Land Reform in Zimbabwe - SAIS Review 27:2  

Microsoft Academic Search

In 1980, Zimbabwe's white minority owned commercial farms covered nearly half the country's agricultural land. Yet today, the state of Zimbabwe, controlled by the ruling Zimbabwe African National Union—Patriotic Front party, holds titles to almost all formerly white . . . owned agricultural land. The removal of constitutional constraints, which accelerated after 2000, was the crucial variable that enabled this

Norma Kriger

2007-01-01

19

Avaliação situada de usabilidade em equipamentos médicos para atendimento à norma IEC 60601-1-6  

Microsoft Academic Search

This work introduces SUE - situated usability evaluation. We show that using SUE in medical systems evaluation provides better results than laboratory usability evaluations. Also, we discuss that SUE can help in compliance with Brazilian standards of usability, medical electrical equipment standards and concepts of ergonomic work analysis. Using SUE in medical equipment design can result in more adequate projects

Barbara Dariano Silva; Lucia Vilela; Leite Filgueiras

20

Infrared photometry of the young stellar objects V346 Normae and RE 13  

Microsoft Academic Search

We have examined the infrared properties of Re 13 and V346 Nor which excite Herbig-Haro objects 56 and 57 respectively. We provide the first detection of Re 13 in the infrared. In the IRAS Point Source Catlaog Re 13 and V346 Nor are confused into a single source IRAS 16289-4449. We have applied maximum entropy based deconvolution techniques to demonstrate

T. Prusti; Tj. R. Bontekoe; J. E. Chiar; D. J. M. Kester; D. C. B. Whittet

1993-01-01

21

CASE REPORT Postoperative Use of the NormaTec Pneumatic Compression Device in Vascular Anomalies  

PubMed Central

Arteriovenous malformations have a wide range of clinical presentations and an unfortunately unpredictable response to both nonsurgical and surgical intervention. The authors report on the surgical treatment of a 19-year-old man with a complex lower extremity arteriovenous malformation, previously unsuccessfully treated with numerous local sclerotherapy and interventional radiology embolization procedures leading to massive tissue necrosis and deep infection. The patient was definitively treated with wide excision of the necrotic tissue, coils, and arteriovenous malformation, but with preservation of the tibial nerve and vascular supply to the foot. Significant postoperative complications were prevented with the use of a novel dynamic compression device employing peristaltic pulse pneumatic compression.

Talbot, Simon G.; Kerstein, David; Jacobs, Laura F.; Upton, Joseph

2012-01-01

22

Total parenteral nutrition with glutamine in bone marrow transplantation and other clinical applications (A randomised double-blind study) Schloerb P and Amare M. JPEN 1993: 17: 407-413.  

PubMed

29 patients with either haematological or solid tumours, and receiving allogeneic or autologous bone marrow transplants (BMT) were included in a double-blind, randomised study of glutamine-free versus glutamine-supplemented TPN. Patients were given isocaloric, isonitrogenous TPN after BMT until they consumed 50% of their required diet orally. Length of hospital stay was significantly (5.8 days) less in patients receiving TPN/GLN. Incidence of positive bacterial cultures, clinical infections and mortality did not differ significantly between the two groups. PMID:16843361

Jebb, S A

1994-02-01

23

Los derechos humanos en las normas sobre el VIH\\/SIDA en México y Centroamérica: 1993-2000  

Microsoft Academic Search

Objective. To analyze the inclusion of human rights in HIV\\/ AIDS norms in Mexico and Central America for the 1993- 2000 period. Material and Methods. Norms and regula- tions for HIV\\/AIDS prevention and control in this region were analyzed. A constructivist perspective of judiciary subsystems and human rights was used as a reference frame- work, to establish categories of analysis

Silvia Magali Cuadra-Hernández; René Leyva-Flores; Daniel Hernández-Rosete; Mario N Bronfman-Pertzovsky

2002-01-01

24

FOUR HIGHLY LUMINOUS MASSIVE STAR-FORMING REGIONS IN THE NORMA SPIRAL ARM. I. MOLECULAR GAS AND DUST OBSERVATIONS  

SciTech Connect

We report molecular line and dust continuum observations, made with the Swedish-ESO Submillimeter Telescope, toward four young high-mass star-forming regions associated with highly luminous (L>6x10{sup 5}L{sub odot}) Infrared Astronomical Satellite sources (15290-5546, 15502-5302, 15567-5236, and 16060-5146). Molecular emission was mapped in three lines of CS (J = 2 -> 1, 3 -> 2, and 5 -> 4), two lines of SiO (J = 2 -> 1 and 3 -> 2), two rotational transitions of CH{sub 3}OH (J{sub k} = 3{sub k} -> 2{sub k} and 2{sub k} -> 1{sub k}), and in the C{sup 34}S(J = 3 -> 2) line. In addition, single spectra at the peak position were taken in the CO(J = 1 -> 0), {sup 13}CO(J = 1 -> 0), and C{sup 18}O(J = 1 -> 0) lines. We find that the luminous star-forming regions are associated with molecular gas and dust structures with radii of typically 0.5 pc, masses of {approx}5 x 10{sup 3} M{sub sun}, column densities of {approx}5 x 10{sup 23} cm{sup -2}, molecular hydrogen densities of typically {approx}2 x 10{sup 5} cm{sup -3}, and dust temperatures of {approx}40 K. The 1.2 mm dust continuum observations further indicate that the cores are centrally condensed, having radial density profiles with power-law indices in the range 1.9-2.3. We find that under these conditions dynamical friction by the gas plays an important role in the migration of high-mass stars toward the central core region, providing an explanation for the observed stellar mass segregation within the cores. The CS profiles show two distinct emission components: a bright component, with line widths of typically 5 km s{sup -1} (FWHM), and a weaker and wider velocity component, which typically extends up to +-13 km s{sup -1} from the ambient cloud velocity. The SiO profiles also show emission from both components, but the intensity of the pedestal feature relative to that of the bright component is stronger than for CS. The narrow SiO component is likely to trace warm ambient gas close to the recently formed massive stars, whereas the high velocity emission indicates mass outflows produced by either the expansion of the H II regions, stellar winds, and/or collimated outflows. We find that the abundances of CS, CH{sub 3}OH, and SiO, relative to H{sub 2}, in the warm ambient gas of the massive cores are typically 4 x 10{sup -8}, 6 x 10{sup -9}, and 5 x 10{sup -11}, respectively.

Garay, Guido; Mardones, Diego; Bronfman, Leonardo; May, Jorge; Chavarria, Luis [Departamento de Astronomia, Universidad de Chile, Camino del Observatorio 1515, Las Condes, Santiago (Chile); Nyman, Lars-Ake [European Southern Observatory, Casilla 19001, Santiago (Chile)

2010-02-10

25

Standard 'Principle guides of radioprotection': introduced concepts and future forecasting. (Norma 'Diretrizes basicas de Radioprotecao': Conceitos introduzidos e perspectivas futuras).  

National Technical Information Service (NTIS)

The main topics introduced by the new CNEN standard NE 3.01 - Basic Directrix of Radioprotection directly associated to the field work in industrial radiography are presented. It's showed a practical example which evidences the need of information exchang...

R. Dagnino

1989-01-01

26

El Escritor y las Normas del Canon Literario (The Writer and the Norms of the Literary Canon).  

ERIC Educational Resources Information Center

|This paper speculates about whether a literary canon exists in contemporary Latin American literature, particularly in the prose genre. The paper points to Carlos Fuentes, Gabriel Garcia Marquez, and Mario Vargas Llosa as the three authors who might form this traditional and liberal canon with their works "La Muerte de Artemio Cruz" (Fuentes),…

Policarpo, Alcibiades

27

La cohabitation : un million de couples non mariés  

Microsoft Academic Search

[spa] La convivencia : un million de parejas sin contraer matrimonio - En 1968, se hacia el recuento de 67 000 parejas sin casar en las que el varon no llegaba a los 35 años. Hoy dia se elevan aproximadamente a 600 000. Estas cifras dan la medida de la extension del matrimonio consensual entre la juventud. Al propio tiempo

Pierre-Alain Audirac

1986-01-01

28

Premarital pregnancies and out-of-wedlock births in denmark, 1950–65  

Microsoft Academic Search

\\u000a Resumen  A pesar de que una comprensiva investigación de los modelos de espaciamiento de nacimientos requiere tambien la consideración\\u000a de aquellos que son concebidos antes del matrimonio, la información detallada sobre esios nacimientos frecuentemente no existe,\\u000a sobre todo en los Estados Unidos. En cambio, las estadisticas de Dinamarca sobre primeros nacimientos de acuerdo a la duración\\u000a del matrimonio, y de nacimientos

Sidney Goldstein

1967-01-01

29

What Is a Science Notebook?  

NSDL National Science Digital Library

Student science notebooks are advocated by researchers who believe that writing in science enhances student understanding of science content and process skills (Amaral et al. 2002; Campbell and Fulton, 2003; Klentschy and Molina-De La Torre 2004; Rivard a

Klentschy, Michael P.

2008-04-01

30

High resolution topography of the Rainbow hydrothermal area, Mid-Atlantic Ridge, 36° 14 N  

Microsoft Academic Search

The Rainbow hydrothermal field at 36° 14 N on the Mid-Atlantic Ridge is one of the few known sites hosted in ultramafic environment. The active site is located on a dome structure in the non-transform offset between the AMAR and South AMAR second-order ridge segments. One of the objectives of Cruise MOMAR DREAM (Aug-Sept 2008, R\\/V Atalante and ROV Victor)

P. Gente; R. Thibaud; J. Dyment; Y. Fouquet; B. Ildefonse; E. Hoise; D. Bissessur; V. Yatheesh; M. Scientific Party

2008-01-01

31

Geological mapping of the Rainbow Massif, Mid-Atlantic Ridge, 36°14'N  

Microsoft Academic Search

The Rainbow hydrothermal field at 36°14'N on the Mid-Atlantic Ridge is one of the few known sites hosted in ultramafic basement. The Rainbow Massif is located along the non-transform offset between the AMAR and South AMAR second-order ridge segments, and presents the characteristic dome morphology of oceanic core complexes, although no corrugated surface has been observed so far. One of

B. Ildefonse; Y. Fouquet; E. Hoisé; J. Dyment; P. Gente; R. Thibaud; D. Bissessur; V. Yatheesh

2008-01-01

32

Forecasting ARIMA models for atmospheric vineyard pathogens in Galicia and Northern Portugal: Botrytis cinerea spores.  

PubMed

Botrytis cinerea is the cause of the most common disease in the Galician and Portuguese vineyards. Knowledge of the spore levels in the atmosphere of vineyards is a tool for forecasting models of the concentration of spores in order to adjust the phytosanitary treatments to real risk infection periods. The presented study was conducted in two vineyards, one located in Cenlle (Spain) and other in Amares (Portugal), from 2005-2007. A volumetric trap, model Lanzoni VPPS-2000, was used for the aerobiological study. Phenological observations were conducted on 20 vines of three grape varieties in Cenlle (Treixadura, Godello and Loureira) and in Amares (Trajadura, Loureiro and Pedernã), by using the BBCH scale. The highest total spore concentrations during the grapevine cycle were recorded in 2007 in both locations (Cenlle:16,145 spores; Amares:1,858 spores), and the lowest, in 2005 in Cenlle (1,700 spores) and in Amares (800 spores) in 2006. In Cenlle, the best adjusted model was an ARIMA (0,2,2), including the relative humidity four days earlier, while in Amares there was an ARIMA (1,2,3), considering the relative humidity three days earlier and rainfall two days earlier. The t-test showed no significant difference between observed and predicted data by the model. PMID:22742797

Fernández-González, María; Rodríguez-Rajo, Francisco Javier; Jato, Victoria; Aira, María Jesús; Ribeiro, Helena; Oliveira, Manuela; Abreu, Iida

2012-01-01

33

CONSIDERAÇÕES TÉCNICAS SOBRE A IMPORTÂNCIA DO ENSAIO DE IMPULSO DE TENSÃO NO PROCESSO PRODUTIVO DE BOBINAS DE MÚLTIPLAS ESPIRAS: Normas de ensaio, dimensionamento de isolação entre espiras e métodos preventivos de falhas  

Microsoft Academic Search

This paper presents technical considerations regarding the importance of the surge test for generators multiturn coils. The test is very useful to verify the correct dimensioning of the interturn insulation of coils concerning its ability to undergo transient overvoltages which they are subjected. This test prescribed by IEEE 522 and IEC60034 part 15, is the only means to check the

Fábio Salomão; Engenheiro Especialista; Mauro Ken; Iti UEMORI

34

Linear Regression and Best Fit  

NSDL National Science Digital Library

This lesson, created by Amar Patel of the University of Illinois - Urbana-Champaign, introduces simple linear regression with several Excel spreadsheet examples such as temperature versus cricket chirps, height versus shoe size, and laziness versus amount of television watched. These activities require class participation. This would be a great interactive lesson for a classroom studying statistics.

Patel, Amar

2009-01-22

35

A framework for modelling fish and shellfish responses to future climate change  

Microsoft Academic Search

Hollowed, A. B., Bond, N. A., Wilderbuer, T. K., Stockhausen, W. T., A'mar, Z. T., Beamish, R. J., Overland, J. E., and Schirripa, M. J. 2009. A framework for modelling fish and shellfish responses to future climate change. - ICES Journal of Marine Science, 66: 000-000. A framework is outlined for a unified approach to forecasting the implications of climate

Anne Babcock Hollowed; Nicholas A. Bond; Thomas K. Wilderbuer; William T. Stockhausen; Z. T. A'mar; Richard J. Beamish; James E. Overland; Michael J. Schirripa

2009-01-01

36

IN PLANTA INTERACTIONS OF THREE PLUM POX POTYVIRUS STRAINS WITHIN CULTIVAR LOVELL PEACH SEEDLINGS  

Technology Transfer Automated Retrieval System (TEKTRAN)

Plum pox potyvirus (PPV) exists as several distinct strains: Dideron (D), Marcus (M), El Amar (EA), and Cherry (C). The M strain is considered the most easily aphid transmissible and epidemic form in peach. The D strain is the oldest recognized strain, most widely distributed worldwide, and the on...

37

Review on clinical studies with cannabis and cannabinoids 2005-2009  

Microsoft Academic Search

To date, a large number of controlled clinical trials have been done evaluating the therapeutic ap- plications of cannabis and cannabis-based preparations. In 2006, an excellent review was pub- lished, discussing the clinical trials performed in the period 1975 to June 2005 (Ben Amar 2006). The current review reports on the more recent clinical data available. A systematic search was

Arno Hazekamp; Franjo Grotenhermen

2010-01-01

38

Improved Method for Accurate and Efficient Quantification of MRS Data with Use of Prior Knowledge  

Microsoft Academic Search

We introduce AMARES (advancedmethod foraccurate,robust, andefficientspectral fitting), an improved method for accurately and efficiently estimating the parameters of noisy magnetic resonance spectroscopy (MRS) signals in the time domain. As a reference time domain method we take VARPRO. VARPRO uses a simple Levenberg–Marquardt algorithm to minimize the variable projection functional. This variable projection functional is derived from a general functional, which

Leentje Vanhamme; Aad van den Boogaart; Sabine Van Huffel

1997-01-01

39

Higher education and equity in Portugal  

Microsoft Academic Search

The main topic of this article is to consider the role of the State in providing higher education in Portugal, paying attention to the fact that the privatisation of higher education has been in place since the eighties (Amaral 1999) and also that it is difficult for students and their families to find the monetary resources needed for attendance at

Belmiro Gil Cabrito

2001-01-01

40

Demographic implications of the New United States certificates  

Microsoft Academic Search

\\u000a Resumen  Rara atender al desarrollo de una información uniforme de sucesos vitales en los cincuenta estados, junto con Puerto Rico\\u000a y las islas Vírgenes, el gobierno de los Estados Unidos prepara cettificados estandar de nacimienios, muertes fetales, muertes,\\u000a matrimonios y divorcios. Estos modelos son revisados aproximadamente cada diez años con asistencia de todos los esiados, Actualmente\\u000a se está preparando una revisión

Anders S. Lunde; Robert D. Grove

1966-01-01

41

Perturbative stability of catenoidal soap films  

NASA Astrophysics Data System (ADS)

The perturbative stability of catenoidal soap films formed between parallel, equal radii, coaxial rings is studied using analytical and semi-analytical methods. Using a theorem on the nature of eigenvalues for a class of Sturm-Liouville operators, we show that, for the given boundary conditions, azimuthally asymmetric perturbations are stable, while symmetric perturbations lead to an instability --a result demonstrated in Ben Amar et al. (Eur. Phys. J. B 3, 197 (1998)) using numerics and experiment. Further, we show how to obtain the lowest real eigenvalue of perturbations, using the semi-analytical Asymptotic Iteration Method (AIM). Conclusions using AIM support the analytically obtained result as well as the results by Ben Amar et al.. Finally, we compute the eigenfunctions and show, pictorially, how the perturbed soap film evolves in time.

Jana, Soumya; Kar, Sayan

2013-09-01

42

A Self-assessment of Higher Education Institutions from the Perspective of the EFQM Excellence Model  

Microsoft Academic Search

Fifteen years ago Peter Drucker (cited in Massy 2003) predicted that “universities will be relics in 30 years”. Although Drucker\\u000a may have overstated the case, the fact is that nowadays higher education can no longer take its values and privileges for\\u000a granted (Massy 2003). For Amaral, Magalh?es, and Santiago (2003: 131), higher education is being exposed to the influence\\u000a of

MARIA JOÃO ROSA; Alberto Amaral

43

Wolff type estimates and the H p corona problem in strictly pseudoconvex domains  

NASA Astrophysics Data System (ADS)

Let D be a strictly pseudoconvex domain in C n . We prove thatbar partial u = ? , ? , ? abar partial (0,1)-form, admits solutions in L p (? D), 1? pAmar in the ball, but under slightly stronger hypotheses. As a corollary we obtain a H p -corona result for two generators.

Andersson, Mats; Carlsson, Hasse

1994-10-01

44

Brane configurations for nonsupersymmetric meta-stable vacua in SQCD with adjoint matter  

NASA Astrophysics Data System (ADS)

We present the configurations of intersecting branes in type IIA string theory corresponding to the meta-stable supersymmetry breaking vacua (Amariti, Girardello and Mariotti 2006 J. High Energy Phys. JHEP12(2006)058 (Preprint hep-th/0608063)) in the four-dimensional {\\cal N}=1 supersymmetric Yang Mills-theory-coupled massive flavours with adjoint matter where the superpotential has three deformed terms.

Ahn, Changhyun

2007-03-01

45

Solids Far from Equilibrium  

NASA Astrophysics Data System (ADS)

Preface; 1. Shape and growth of crystals P. Nozières; 2. Instabilities of planar solidification fronts B. Caroli, C. Caroli and B. Roulet; 3. An introduction to the kinetics of first-order phase transition J. S. Langer; 4. Dendritic growth and related topics Y. Pomeau and M. Ben Amar; 5. Growth and aggregation far from equilibrium L. M. Sander; 6. Kinetic roughening of growing surfaces J. Krug and H. Spohn; Acknowledgements; References; Index.

Godrèche, C.

2011-03-01

46

Higher Education and Equity in Portugal  

Microsoft Academic Search

The main topic of this article is to consider the role of the State in providing higher education in Portugal, paying attention\\u000a to the fact that the privatisation of higher education has been in place since the eighties (Amaral 1999) and also that it\\u000a is difficult for students and their families to find the monetary resources needed for attendance at

Belmiro Gil Cabrito

2001-01-01

47

Three-dimensional Hybrid Continuum-Atomistic Simulations for Multiscale Hydrodynamics  

SciTech Connect

We present an adaptive mesh and algorithmic refinement (AMAR) scheme for modeling multi-scale hydrodynamics. The AMAR approach extends standard conservative adaptive mesh refinement (AMR) algorithms by providing a robust flux-based method for coupling an atomistic fluid representation to a continuum model. The atomistic model is applied locally in regions where the continuum description is invalid or inaccurate, such as near strong flow gradients and at fluid interfaces, or when the continuum grid is refined to the molecular scale. The need for such ''hybrid'' methods arises from the fact that hydrodynamics modeled by continuum representations are often under-resolved or inaccurate while solutions generated using molecular resolution globally are not feasible. In the implementation described herein, Direct Simulation Monte Carlo (DSMC) provides an atomistic description of the flow and the compressible two-fluid Euler equations serve as our continuum-scale model. The AMR methodology provides local grid refinement while the algorithm refinement feature allows the transition to DSMC where needed. The continuum and atomistic representations are coupled by matching fluxes at the continuum-atomistic interfaces and by proper averaging and interpolation of data between scales. Our AMAR application code is implemented in C++ and is built upon the SAMRAI (Structured Adaptive Mesh Refinement Application Infrastructure) framework developed at Lawrence Livermore National Laboratory. SAMRAI provides the parallel adaptive gridding algorithm and enables the coupling between the continuum and atomistic methods.

Wijesinghe, S; Hornung, R; Garcia, A; Hadjiconstantinou, N

2004-04-15

48

A method for determining the normative mineralogy of tills  

Microsoft Academic Search

A new computer program, NORMA, was developed for calculating the normative mineral composition of till from analytical data. The NORMA program manipulates concentrations of elements totally dissolved by hot aqua regia and total element concentrations measured by either total dissolution or X-ray fluorescence method. Minerals dissolving in aqua regia are presumed to be trioctahedral micas (biotite), clay minerals (chlorite), and

Soile Aatos; Marja-Liisa Räisänen

1996-01-01

49

SÓCRATES CONTRA A EDUCAÇÃO SOFÍSTICA NO PROTÁGORAS  

Microsoft Academic Search

RESUMO: No Protágoras de Platão, Sócrates discute o problema fundamental da educação: a virtude pode ser ensinada? A questão pode ser reformulada como segue: virtude pode ser ensinada nos termos da pedagogia sofística, isto é, uma aprendizagem dos valores, normas e padrões pelos quais uma cidade é organizada, e o ensino de como manipular estes valores e normas para benefício

José Lourenço Pereira da Silva

2009-01-01

50

Instabilities and waves in thin films of living fluids  

NASA Astrophysics Data System (ADS)

We formulate the thin-film hydrodynamics of a suspension of polar self-driven particles and show that it is prone to several instabilities through the interplay of activity, polarity and the existence of a free surface. Our approach extends, to self-propelling systems, the work of Ben Amar and Cummings [Phys Fluids 13 (2001) 1160] on thin-film nematics. Based on our estimates the instabilities should be seen in bacterial suspensions and the lamellipodium, and are potentially relevant to the morphology of biofilms. We suggest several experimental tests of our theory.

Sankararaman, Sumithra; Ramaswamy, Sriram

2009-03-01

51

Instabilities and Waves in Thin Films of Living Fluids  

NASA Astrophysics Data System (ADS)

We formulate the thin-film hydrodynamics of a suspension of polar self-driven particles and show that it is prone to several instabilities through the interplay of activity, polarity, and the existence of a free surface. Our approach extends, to self-propelling systems, the work of Ben Amar and Cummings [Phys. FluidsPHFLE61070-6631 13 1160 (2001)10.1063/1.1359748] on thin-film nematics. Based on our estimates the instabilities should be seen in bacterial suspensions and the lamellipodium, and are potentially relevant to the morphology of biofilms. We suggest several experimental tests of our theory.

Sankararaman, Sumithra; Ramaswamy, Sriram

2009-03-01

52

Letter Written by Warren E. Ungberg to the Bryant College Service Club Dated March 2, 1944  

Microsoft Academic Search

[Transcription begins]\\u000aMar 2, 1944\\u000aBryant Service Club Bryant College\\u000aDear Friends,\\u000aThank you for your letter of Dec 8th. It has been chasing me over a good portion of New Guinea I guess thus the delay. As yet your xmas package has not arrived. I suspect that it too is having difficulty finding me.\\u000aAt present I’m at an

Warren E. Ungberg

1944-01-01

53

Guidance for Industry  

Center for Biologics Evaluation and Research (CBER)

Text Version... Puede usar un enfoque alternativo si el mismo cumple los requisitos de las normas y regulaciones correspondientes. Si ... More results from www.fda.gov/downloads/drugs/guidancecomplianceregulatoryinformation

54

Remediation of Coordination Deficits in Youth with Minimal Cerebral Dysfunction.  

National Technical Information Service (NTIS)

The research to develop an accurate assessment tool to diagnose minimal cerebral dysfunction in children discovered that the Devereaux Test of Extremity Coordination (DTEC) is able to discriminate between children with minimal brain dysfunction and 'norma...

G. E. DeHaven J. D. Bruce D. C. Bryan

1971-01-01

55

Cognitive Effects of Hypoxia Exposure Persist Following Restoration of Blood Oxygen Saturation.  

National Technical Information Service (NTIS)

Hypoxia is a major physiological threat to Navy pilots and aircrew. The insidious nature of onset and the significant variability in individual symptoms make recognition and corrective action difficult. The time required for individuals to return to norma...

J. Phillips

2010-01-01

56

CFSAN Office of Regulations and Policy  

Center for Food Safety and Applied Nutrition (CFSAN)

Text VersionRevisión General de la Norma Final Provisional de Registro Implementando la Ley de Bioterrorismo. (68 FR 58894, 10 de octubre del 2003). ... More results from www.fda.gov/downloads/food/guidanceregulation

57

La irradiación de alimentos  

Center for Food Safety and Applied Nutrition (CFSAN)

Text Version... contaminarse con organismos que provocan enfermedades después de la irradiación si no se siguen las normas básicas de seguridad alimentaria ... More results from www.fda.gov/downloads/food/ingredientspackaginglabeling

58

FACTORS AFFECTING SENSITIVITY OF CHEMICAL AND ECOLOGICAL RESPONSES OF MARINE EMBAYMEMTS TO NITROGEN LOADING  

EPA Science Inventory

This paper summarizes an ongoing examination of the primary factors that affect sensitivity of marine embayment responses to nitrogen loading. Included is a discussion of two methods for using these factors: classification of embayments into discrete sensitivity classes and norma...

59

The Statistical Nature of Fatigue Crack Propagation.  

National Technical Information Service (NTIS)

A statistical investigation of the fatigue crack propagation process was conducted. Sixty-eight replicate constant amplitude crack propagation tests were conducted on 2024-T3 aluminum alloy. The following distributions were considered: two-parameter norma...

B. M. Hillberry D. A. Virkler P. K. Goel

1977-01-01

60

75 FR 3904 - Appointments to the Medicaid and CHIP Payment and Access Commission (MACPAC)  

Federal Register 2010, 2011, 2012, 2013

...Center; Norma Martinez Rogers, PhD, RN, FAAN, Professor, Department of Family Nursing, University of Texas Health Science Center at San Antonio; and Sara Rosenbaum, JD, Chair, Department of Health Policy and Harold and Jane Hirsh...

2010-01-25

61

"Flash" Updates of GSC projects (GSC8 Meeting)  

SciTech Connect

The Genomic Standards Consortium was formed in September 2005. It is an international, open-membership working body which promotes standardization in the description of genomes and the exchange and integration of genomic data. The 2009 meeting was an activity of a five-year funding "Research Coordination Network" from the National Science Foundation and was organized held at the DOE Joint Genome Institute with organizational support provided by the JGI and by the University of California - San Diego. In quick succession, MPI-Bremen's Frank Oliver Glockner, Berkeley Lab's Victor Markowitz, DOE JGI's Nikos Kyrpides, Argonne National Laboratory's Folker Meyer, the Marine Biology Laboratory's Linda Amaral-Zettler and Michigan State University's James Cole provide updates on a number of topics related to GSC projects at the Genomic Standards Consortium's 8th meeting at the DOE JGI in Walnut Creek, Calif. on Sept. 9, 2009.

Glockner, Frank Oliver; Markowitz, Victor; Kyrpides, Nikos; Meyer, Folker; Amaral-Zettler, Linda; Cole, James

2009-09-09

62

Vitamin C in leaves and seed oil composition of the Amaranthus species.  

PubMed

The foliage of 62 specimens of Amaranthus belonging to 10 species of grain and four of vegetable type were analysed for vitamin C content. The overall range of vitamin C was from 69 (A. cruentus, AG-122) to 288 mg/100 g (A. hypochondriacus, Rasna) in the grain type and 62 (A. tricolor, Amar-peet) to 209 mg/100 g (A. tricolor, AV-101, exp) in the vegetable type (fresh weight). Variation of vitamin C with leaf position (age) was also studied. While the oil content in 110 lines of A. hypochondriacus varied from 4.4 to 13.2%, most of the specimens had promising oil composition with regard to unsaturated fatty acids. PMID:7712342

Prakash, D; Joshi, B D; Pal, M

1995-02-01

63

Avalanches in Interfacial Motion in a Model Porous Medium  

NASA Astrophysics Data System (ADS)

I report measurements of the dynamics of an air/water interface moving through a model porous medium composed of glass beads. At low capillary number, the interface does not move uniformly. Instead, some small regions stay pinned, while others move, at least for a short time. These bursts of motion are called avalanches. In several theoretical models, (See, for example, L.A.N. Amaral, A.-L. Barabasi, S.V. Buldyrev, S. Havlin, S.T. Harrington, R. Sadr, and H.E. Stanley, Phys. Rev. E, 51, 4655 (1995) and references therein.) for driving forces F close to the critical force F_c, the avalanches follow a power-law distribution. In contrast, I find that the number N(s) of moving regions of size s decays exponentially with s, even at very low capillary number. I will discuss some of the important features of the experiments and models that might help explain the different avalanche behavior.

Dougherty, Andrew

1997-03-01

64

Imaging of Active Microwave Devices at Cryogenic Temperatures using Scanning Near-Field Microwave Microscopy  

NASA Astrophysics Data System (ADS)

The ability to image electric fields in operating microwave devices is interesting both from the fundamental point of view and for diagnostic purposes. To that end we have constructed a scanning near-field microwave microscope which uses an open-ended coaxial probe and operates at cryogenic temperatures.(For related publications see: C. P. Vlahacos, R. C. Black, S. M. Anlage, A. Amar and F. C. Wellstood, Appl. Phys. Lett. 69), 3274 (1996) and S. M. Anlage, C. P. Vlahacos, Sudeep Dutta and F. C. Wellstood, IEEE Trans. Appl. Supercond. 7, 3686 (1997). Using this system we have imaged electric fields generated by both normal metal and superconducting microstrip resonators at temperatures ranging from 77 K to 300 K. We will present images and discuss our results including observations of clear standing wave patterns at the fundamental resonant frequency and an increased quality factor of the resonators at low temperatures.

Thanawalla, Ashfaq S.; Dutta, S. K.; Vlahacos, C. P.; Steinhauer, D. E.; Feenstra, B. J.; Anlage, Steven M.; Wellstood, F. C.

1998-03-01

65

Fast quantification of proton magnetic resonance spectroscopic imaging with artificial neural networks  

NASA Astrophysics Data System (ADS)

Accurate quantification of the MRSI-observed regional distribution of metabolites involves relatively long processing times. This is particularly true in dealing with large amount of data that is typically acquired in multi-center clinical studies. To significantly shorten the processing time, an artificial neural network (ANN)-based approach was explored for quantifying the phase corrected (as opposed to magnitude) spectra. Specifically, in these studies radial basis function neural network (RBFNN) was used. This method was tested on simulated and normal human brain data acquired at 3T. The N-acetyl aspartate (NAA)/creatine (Cr), choline (Cho)/Cr, glutamate + glutamine (Glx)/Cr, and myo-inositol (mI)/Cr ratios in normal subjects were compared with the line fitting (LF) technique and jMRUI-AMARES analysis, and published values. The average NAA/Cr, Cho/Cr, Glx/Cr and mI/Cr ratios in normal controls were found to be 1.58 ± 0.13, 0.9 ± 0.08, 0.7 ± 0.17 and 0.42 ± 0.07, respectively. The corresponding ratios using the LF and jMRUI-AMARES methods were 1.6 ± 0.11, 0.95 ± 0.08, 0.78 ± 0.18, 0.49 ± 0.1 and 1.61 ± 0.15, 0.78 ± 0.07, 0.61 ± 0.18, 0.42 ± 0.13, respectively. These results agree with those published in literature. Bland Altman analysis indicated an excellent agreement and minimal bias between the results obtained with RBFNN and other methods. The computational time for the current method was 15 s compared to approximately 10 min for the LF-based analysis.

Bhat, Himanshu; Sajja, Balasrinivasa Rao; Narayana, Ponnada A.

2006-11-01

66

Further Geological Sampling Around the Rainbow Hydrothermal Site, Mid-Atlantic Ridge  

NASA Astrophysics Data System (ADS)

The Rainbow hydrothermal site, at 36°14'N on the Mid-Atlantic Ridge, is one of the few known site hosted in ultramafic basement. The MOMAR DREAM cruise (July 2007, R/V Pourquoi Pas ?) combined biological and geological objectives to study the role of abundant iron in controlling geological, biological and hydrological active processes at all scales. Two Nautile dives and a dredging program were achieved to further constrain the lithology and geological structures on the seafloor at the scale of the massif that hosts Rainbow. This massif is an inside corner high of the non-transform offset between the AMAR and South AMAR second-order ridge segments, and presents the characteristic dome morphology of oceanic core complexes. The abundant sediment cover of the massif precludes continuous geological mapping and completely successful dredging. However, our limited sampling is consistent with the lithological variability encountered in other oceanic core complexes along the Mid-Atlantic Ridge. The Rainbow serpentinite basement was continuously observed to a distance of about 1 km to the south of the hydrothermal site, with serpentinites sampled along N-S trending, fault planes steeply dipping to the West. Serpentinites were also found on the northwestern, northern, and northeastern flanks of the massif. Approximately 800 m the North of the hydrothermal site, the most prominent outcrop, cut by a family of subvertical, ~ E-W faults, is at least partly made of olivine- orthopyroxene bearing gabbro. Basalts and fresh basaltic glass were also recovered in talus and sediments on the Southwest and Northeast flanks of the massif.

Ildefonse, B.; Andréani, M.; Hoisé, E.; Ballu, V.; Escartin, J.; Dyment, J.; Gaill, F.; Fouquet, Y.

2007-12-01

67

Apuntes sobre el Sistema Interamericano  

Microsoft Academic Search

El primer artículo nos plantea uno de los más importantes aportes de la Corte Interamericana de Derechos Humanos, es la construcción de toda una teoría respecto de las normas que integran el derecho imperativo internacional. El segundo contempla a la igualdad que ha sido una preocupación de todas las ciencias sociales y humanas, incluyendo la ciencia jurídica que, reflejando la

Autores varios

68

LA RESPONSABILIDAD SOCIAL DE LAS EMPRESAS TURÍSTICAS: PERCEPCIONES DE LOS ESTUDIANTES  

Microsoft Academic Search

El interés por la Responsabilidad Social Corporativa en el sector turístico queda reflejado por varios hechos. El primero es de naturaleza académica y hace referencia a que en las normas, documentos y propuestas del Espacio Europeo de Educación Superior se le otorga una importancia crítica a que el aprendizaje de competencias conlleven el respeto al medio ambiente y al patrimonio

José Alberto Martínez González

2012-01-01

69

A dinâmica discursiva na sala de aula e a apropriação da escrita  

Microsoft Academic Search

RESUMO: Este trabalho discute, no contexto da teoria sociocultural, alguns elementos que constituem a dinâmica discursiva de uma sala de aula em que a escrita e as normas ortográficas são ob- jetos de ensino-aprendizagem. O vídeo foi usado na coleta de dados e as transcrições, organizadas na forma de episódios de ensi- no, foram submetidas à análise microgenética. Essa análise

Maria do Socorro Alencar Nunes Macedo; Eduardo Fleury Mortimer

2000-01-01

70

Human Security and the Copenhagen School's Securitization Approach  

Microsoft Academic Search

The article compares the Copenhagen School's securitization approach to the human security approach, both in terms of analytical utility and norma- tive utility. It states that human security lacks any analytical utility, while having the upper hand on the securitization approach in terms of normative utility. The Copenhagen School is indeed unable to make recommendations aimed at improving the lives

Rita Floyd

71

Geophysicists  

NASA Astrophysics Data System (ADS)

In Memoriam: Francis R. ``Joe'' Boyd, John B. Ivey, William Warren Kellogg, Norma N. McMillin, Henry T. R. Radoski, William (Bill) Sackett, John W. Sherman, III, Kjell Petter Skjerlie, Peter Bernard Smoor; Recent Ph.D.s: Joan Bech, Mark Pickett

2004-02-01

72

Using Adolescent Fiction That Deals with Current Problems and Lifestyles to Explore Contemporary Values.  

ERIC Educational Resources Information Center

This paper argues that a value structure must be developed and taught in the schools. The values and principles contained in the Humanistic Manifesto II are examined in the context of current adolescent literature. Discussed are such books as "It's Not What You Expect" and "Mom, The Wolfman and Me" by Norma Klein; "First Person Singular" by Vida…

Schwartz, Sheila

73

NECESIDADES DE HOY: MEMORIA HISTÓRICA, PATRIMONIO, COSTUMBRES Y\\/O TRADICIONES E IDENTIDAD CULTURAL EN LA FAMILIA  

Microsoft Academic Search

La familia como agente educativo, tiene una alta responsabilidad en formar adecuadamente a sus hijos sobre la base de la transmisión de normas y valores socialmente valiosos; es por ello, que en estos momentos la dimensión de esta temática cobra una mayor fuerza y se hace necesario conocer las problemáticas familiares y a partir de ese conocimiento elevar la preparación

Náyade Caridad Reyes Palau

2011-01-01

74

STRESS-STRAIN PROPERTIES OF IRRADIATED FILLED NATURAL RUBBER  

Microsoft Academic Search

The stress- strain behavior of carbon-black filled natural rubbers cured ; by exposure to 2-Mev electrons was examined in relation to that of normal ; vulcanizates. A simple empirical power law relating modulus to elongation has ; facilitated handling of the experimental data. Antioxidants and other norma1 ; ingredients of the rubber mix confer improved ageing resistance but also increase

S PINNER

1959-01-01

75

Using Dialogue between Researcher and Participants as a Method of Coping with Issues of Credibility in Translation of Hispanics' Professional Presentations.  

ERIC Educational Resources Information Center

|This paper contrasts Edward Hall's microcultural analysis method of teaching members of different cultures how to interact with the others, with Norma Flores' macrocultural Intercultural Assessment of Communication Competency and English Speaking Skills (I ACCESS) method of giving members of different cultures an opportunity to collaborate with…

Flores, Norma Landa

76

Recycling TATB PBX.  

National Technical Information Service (NTIS)

The feasibility of recycling IHE has been successfully demonstrated on a large scale by processing over 750 kg of machining scrap. The content of machine cuttings in the recycled PBX lots was 50, 75, and 100%. Physical strengths were generally above norma...

A. G. Osborn H. D. Johnson T. L. Stallings

1978-01-01

77

LITERATURSPRACHE IN DER GRAMMATIKOGRAPHIE DES SPANISCHEN  

Microsoft Academic Search

Los textos literarios desempeñan un papel de primera importancia en el desarrollo de las lenguas estándares. En la fase de los dialectos primarios, es decir, antes del establecimiento de la lengua estandar, los textos literarios contribuyen a aumentar no sólo el prestigio de una variedad determinada sino también su chance de proporcionar la base de la norma en proceso de

Heidi Aschenberg

2005-01-01

78

Using Adolescent Fiction That Deals with Current Problems and Lifestyles to Explore Contemporary Values.  

ERIC Educational Resources Information Center

|This paper argues that a value structure must be developed and taught in the schools. The values and principles contained in the Humanistic Manifesto II are examined in the context of current adolescent literature. Discussed are such books as "It's Not What You Expect" and "Mom, The Wolfman and Me" by Norma Klein; "First Person Singular" by Vida…

Schwartz, Sheila

79

Assessment of herbicide sorption by biochars and organic matter associated with soil and sediment  

Technology Transfer Automated Retrieval System (TEKTRAN)

Sorption of two herbicides, fluridone (FLUN) and norflurazon (NORO), by whole sediment, two types of biochars and various soil/sediment organic matter (OM) fractions including nonhydrolyzable carbon (NHC), black carbon (BC) and humic acid (HA) was examined. The single-point organic carbon (OC)-norma...

80

Oligodendrocytes in the normal and chronically de-afferented lateral geniculate body of the monkey  

Microsoft Academic Search

Electron microscopical examination of the norma and de-afferented ‘laterall geniculate body’ of the monkey following paraformaldehyde-glutaraldehyde vascular perfusion revealed distinctive morphological features of different types of oligodendrocyte. These cells were normally situated as perineuronal satellites or in relation to axons and capillaries. A wide range of nuclear and cytoplasmic densities were displayed by both satellite and interfascicular oligodendrocytes. The following

Mahdi Hasan; Paul Glees

1972-01-01

81

REDUCTION OF IONIC SPECIES BY FULVIC ACID  

EPA Science Inventory

Studies have shown that a fulvic acid derived from soil is capable of reducing Hg(II) to Hg(0), Fe(III) to Fe(II), and I2 and I3(-1) to I(-1) under conditions generally characteristic of natural waters. The evaluation indicates a reduction potential approximately 0.5 V (vs. norma...

82

USAF Bioenvironmental Noise Data Handbook: Volume 42. EC-135H In-Flight Crew Noise.  

National Technical Information Service (NTIS)

The EC-135H is a modified KC-135A aircraft equipped as an airborne command post for use by Hq USAF (Night Watch). This report provides measured data defining the bioacoustic environments at flight crew/passenger locations inside this aircraft during norma...

N. A. Farinacci J. N. Cole H. Mohlman D. Eilerman

1975-01-01

83

Deconstructing Gender Stereotyping through Literature in L2  

ERIC Educational Resources Information Center

|While it is generally accepted that literature fosters (inter)cultural learning, few qualitative studies have sought to understand in what ways interculturality is developed. This article investigates the development of Spanish L2 students' intercultural awareness through the reading of a short story entitled "Norma y Ester" by Argentine writer,…

Yulita, Leticia

2010-01-01

84

Impasse at the MLA  

ERIC Educational Resources Information Center

|At the annual gathering of the Modern Language Association (MLA), panel members seemed to talk past each other. Mark Bauerlein and David Horowitz each criticized the professoriate for not acknowledging real problems in the classroom or the ways identity politics can infringe on academic freedom. Norma V. Canti and Cary Nelson did not respond to…

McMillen, Liz

2009-01-01

85

Impacto Económico en la Salud por Contaminación del Aire en Lima Metropolitana  

Microsoft Academic Search

I. Objetivos y Justificación del Proyecto: La contaminación ambiental es un problema que se ha venido agravando en las ?ltimas décadas en el Perú, sin embargo, en la práctica es poco lo que se ha hecho para reducirla a niveles aceptables o permitidos. A principios de la presente década se han emitido ciertas normas legales que buscan regular los niveles

Juan José Miranda

86

EL PATRIMONIO MUSICAL ESPAÑOL Y SU GESTIÓN  

Microsoft Academic Search

Este trabajo aborda la problemática que afecta al patrimonio musical español, centrándose en cuatro aspectos: 1) el concepto de patrimonio musical, todavía insuficientemente definido en España, y su consideración como una parte del patrimonio cultural; 2) las normas legales existentes para proteger el patrimonio musical; 3) la gestión del patrimonio musical en el actual marco político español; y 4) la

María Gembero Ustárroz

2005-01-01

87

SIMBA explores the southern sky  

NASA Astrophysics Data System (ADS)

Contents: 1. SIMBA. 2. The Orion region. 3. ? Carinae and the Keyhole Nebula. 4. Massive star formation in the Norma spiral arm. 5. Infrared dark clouds. 6. The R CrA star forming region. 7. The dark globule B68. 8. 30 Dor and N159 in the Large Magellanic Cloud.

Nyman, L.-Å.; Lerner, M.; Nielbock, M.; Anciaux, M.; Brooks, K.; Chini, R.; Albrecht, M.; Lemke, R.; Kreysa, E.; Zylka, R.; Johansson, L. E. B.; Bronfman, L.; Kontinen, S.; Linz, H.; Stecklum, B.

2001-12-01

88

L'azione del propranololo sulla glicemia e sull'insulina immunoreattiva in una paziente affetta da insulinoma  

Microsoft Academic Search

Riassunto Con la somministrazione orale di propranololo ad una paziente affetta da insulinoma si è notato un miglioramento delle condizioni cliniche e una minor frequenza delle crisi ipoglicemiche. I valori di glicemia e di IRI si sono portati nella norma. Vengono riportati e brevemente discussi i risultati delle prove del digiuno, del glucagone e della leucina praticate prima e durante

Vittorio Neri; Alberto Bartorelli; Giovanni Faglia

1969-01-01

89

La Réunion : une économie sur des échasses  

Microsoft Academic Search

[spa] La isla de La Reunion : una economia con zancos . Patrick Momal . En la isla de La Reunion, las prestaciones sociales y el numéro de funcionarios no superan las normas nacionales. No obstante, las cuotas sociales y los impuestos retenidos a los habitantes de La Reunion no cubren mâs que en parte las prestaciones sociales que se

Patrick Momal

1986-01-01

90

Simulation code for ICF including radiative energy transfer  

NASA Astrophysics Data System (ADS)

Improvements in the atomic physics environment or the Inertial Confinement Fusion (ICF) code NORMA, together with algorithms for radiation transport are presented. Using that code, results on LHAR targets of ILE are reported and compared with ILESTA and HISHO-1D codes.

Velarde, G.; Aragones, J. M.; Honrubia, J. J.; Martinez-Val, J. M.; Minguez, E.; Ocana, J. L.; Perlado, J. M.

1988-02-01

91

Compact Representations of Extended Causal Models.  

National Technical Information Service (NTIS)

Judea Pearl (2000) was the first to propose a definition of actual causation using causal models. A number of authors have suggested that an adequate account of actual causation must appeal not only to causal structure, but also to considerations of norma...

C. Hitchcock J. Y. Halpern

2012-01-01

92

Comparing an Individual's Test Score Against Norms Derived from Small Samples  

Microsoft Academic Search

The standard method for comparing an individual's test score with a normative sample involves converting the score to a z score and evaluating it using a table of the area under the normal curve. When the norma- tive sample is small, a more appropriate method is to treat the individual as a sample of N = 1 and use a

J. R. Crawford; David C. Howell

1998-01-01

93

Evaluation and Assessment in Educational Information Technology.  

ERIC Educational Resources Information Center

|This book contains the following articles on evaluating and assessing educational information technology: (1) "Assessing Learning in the New Age of Information Technology in Education" (Leping Liu, D. LaMont Johnson, Cleborne D. Maddux, and Norma J. Henderson); (2) "Instruments for Assessing the Impact of Technology in Education" (Rhonda…

Liu, Leping, Ed.; Johnson, D. LaMont, Ed.; Maddux, Cleborne D., Ed.; Henderson, Norma J., Ed.

94

Vent fluid chemistry of the Rainbow hydrothermal system (36°N, MAR): Phase equilibria and in situ pH controls on subseafloor alteration processes  

NASA Astrophysics Data System (ADS)

The Rainbow hydrothermal field is located at 36°13.8'N-33°54.15'W at 2300 m depth on the western flank of a non-volcanic ridge between the South AMAR and AMAR segments of the Mid-Atlantic Ridge. The hydrothermal field consists of 10-15 active chimneys that emit high-temperature (˜365 °C) fluid. In July 2008, vent fluids were sampled during cruise KNOX18RR, providing a rich dataset that extends in time information on subseafloor chemical and physical processes controlling vent fluid chemistry at Rainbow. Data suggest that the Mg concentration of the hydrothermal end-member is not zero, but rather 1.5-2 mmol/kg. This surprising result may be caused by a combination of factors including moderately low dissolved silica, low pH, and elevated chloride of the hydrothermal fluid. Combining end-member Mg data with analogous data for dissolved Fe, Si, Al, Ca, and H 2, permits calculation of mineral saturation states for minerals thought appropriate for ultramafic-hosted hydrothermal systems at temperatures and pressures in keeping with constraints imposed by field observations. These data indicate that chlorite solid solution, talc, and magnetite achieve saturation in Rainbow vent fluid at a similar pH (T,P) (400 °C, 500 bar) of approximately 4.95, while higher pH values are indicated for serpentine, suggesting that serpentine may not coexist with the former assemblage at depth at Rainbow. The high Fe/Mg ratio of the Rainbow vent fluid notwithstanding, the mole fraction of clinochlore and chamosite components of chlorite solid solution at depth are predicted to be 0.78 and 0.22, respectively. In situ pH measurements made at Rainbow vents are in good agreement with pH (T,P) values estimated from mineral solubility calculations, when the in situ pH data are adjusted for temperature and pressure. Calculations further indicate that pH (T,P) and dissolved H 2 are extremely sensitive to changes in dissolved silica owing to constraints imposed by chlorite solid solution-fluid equilibria. Indeed, the predicted correlation between dissolved silica and H 2 defines a trend that is in good agreement with vent fluid data from Rainbow and other high-temperature ultramafic-hosted hydrothermal systems. We speculate that the moderate concentrations of dissolved silica in vent fluids from these systems result from hydrothermal alteration of plagioclase and olivine in the form of subsurface gabbroic intrusions, which, in turn are variably replaced by chlorite + magnetite + talc ± tremolite, with important implications for pH lowering, dissolved sulfide concentrations, and metal mobility.

Seyfried, W. E., Jr.; Pester, Nicholas J.; Ding, Kang; Rough, Mikaella

2011-03-01

95

Geological mapping of the Rainbow Massif, Mid-Atlantic Ridge, 36°14'N  

NASA Astrophysics Data System (ADS)

The Rainbow hydrothermal field at 36°14'N on the Mid-Atlantic Ridge is one of the few known sites hosted in ultramafic basement. The Rainbow Massif is located along the non-transform offset between the AMAR and South AMAR second-order ridge segments, and presents the characteristic dome morphology of oceanic core complexes, although no corrugated surface has been observed so far. One of the objectives of Cruises MOMAR DREAM (July 2007, R/V Pourquoi Pas ?; Aug-Sept 2008, R/V Atalante) was to study the petrological and structural context of the hydrothermal system at the scale of the Rainbow Massif. Our geological sampling complements previous ones achieved during Cruises FLORES (1997) and IRIS (2001), and consisted in dredge hauls, and submersible dives by manned submersible Nautile and ROV Victor. The tectonics of the Rainbow Massif is dominated by a N-S trending fault pattern on the western flank of the massif, and a series of SW-NW ridges on its northeastern side. The active hydrothermal site is located in the area were these two systems crosscut. The most abundant recovered rock type is peridotite (harzburgite and dunite) that presents a variety of serpentinization styles and intensity, and a variety of deformation styles (commonly undeformed, sometimes displaying ductile or brittle foliations). Serpentinites are frequently oxidized. Some peridotite samples have melt impregnation textures. Massive chromitite was recovered in one dredge haul. Variously evolved gabbroic rocks were collected as discrete samples or as centimeter to decimeter-thick dikes in peridotites. Basalts and fresh basaltic glass were also sampled in talus and sediments on the southwestern and northeastern flanks of the massif. Our sampling is consistent with the lithological variability encountered in oceanic core complexes along the Mid-Atlantic Ridge and Southwest Indian Ridge. The stockwork of the hydrothermal system has been sampled on the western side of the present-day hydrothermal field, along N-S trending normal fault scarps, and within the talus underneath. It is made of massive sulfides, strongly altered serpentinites, and breccias containing elements of iron sulfide/oxide impregnated serpentinites. * K. Bukas, V. Cueff Gauchard, L. Durand, F. Gaill, C. Konn, F. Lartaud, N. Le Bris, G. Musset, A. Nunes, J. Renard, V. Riou, A. Tasiemski, P. Torres, I. Vojdani, M. Zbinden

Ildefonse, B.; Fouquet, Y.; Hoisé, E.; Dyment, J.; Gente, P.; Thibaud, R.; Bissessur, D.; Yatheesh, V.; Momardream 2008 Scientific Party*, T.

2008-12-01

96

Anti-atherosclerotic therapy based on botanicals.  

PubMed

Natural products including botanicals for both therapy of clinical manifestations of atherosclerosis and reduction of atherosclerosis risk factors are topics of recent patents. Only a few recent patents are relevant to the direct antiatherosclerotic therapy leading to regression of atherosclerotic lesions. Earlier, using a cellular model we have developed and patented several anti-atherosclerotic drugs. The AMAR (Atherosclerosis Monitoring and Atherogenicity Reduction) study was designed to estimate the effect of two-year treatment with time-released garlic-based drug Allicor on the progression of carotid atherosclerosis in 196 asymptomatic men aged 40-74 in double-blinded placebo-controlled randomized clinical study. The primary outcome was the rate of atherosclerosis progression, measured by high-resolution B-mode ultrasonography as the increase in carotid intima-media thickness (IMT) of the far wall of common carotid arteries. The mean rate of IMT changes in Allicor-treated group (-0.022±0.007 mm per year) was significantly different (P = 0.002) from the placebo group in which there was a moderate progression of 0.015±0.008 mm at the overall mean baseline IMT of 0.931±0.009 mm. A significant correlation was found between the changes in blood serum atherogenicity (the ability of serum to induce cholesterol accumulation in cultured cells) during the study and the changes in intima-media thickness of common carotid arteries (r = 0.144, P = 0.045). Thus, the results of AMAR study demonstrate that long-term treatment with Allicor has a direct anti-atherosclerotic effect on carotid atherosclerosis and this effect is likely to be due to serum atherogenicity inhibition. The beneficial effects of other botanicals including Inflaminat (calendula, elder and violet), phytoestrogen- rich Karinat (garlic powder, extract of grape seeds, green tea leafs, hop cones, ?-carotene, ?-tocopherol and ascorbic acid) on atherosclerosis have also been revealed in clinical studies which enforces a view that botanicals might represent promising drugs for anti-atherosclerotic therapy. PMID:23176379

Orekhov, Alexander N; Sobenin, Igor A; Korneev, Nikolay V; Kirichenko, Tatyana V; Myasoedova, Veronika A; Melnichenko, Alexandra A; Balcells, Mercedes; Edelman, Elazer R; Bobryshev, Yuri V

2013-04-01

97

Emperical Laws in Economics Uncovered Using Methods in Statistical Mechanics  

NASA Astrophysics Data System (ADS)

In recent years, statistical physicists and computational physicists have determined that physical systems which consist of a large number of interacting particles obey universal "scaling laws" that serve to demonstrate an intrinsic self-similarity operating in such systems. Further, the parameters appearing in these scaling laws appear to be largely independent of the microscopic details. Since economic systems also consist of a large number of interacting units, it is plausible that scaling theory can be usefully applied to economics. To test this possibility using realistic data sets, a number of scientists have begun analyzing economic data using methods of statistical physics [1]. We have found evidence for scaling (and data collapse), as well as universality, in various quantities, and these recent results will be reviewed in this talk--starting with the most recent study [2]. We also propose models that may lead to some insight into these phenomena. These results will be discussed, as well as the overall rationale for why one might expect scaling principles to hold for complex economic systems. This work on which this talk is based is supported by BP, and was carried out in collaboration with L. A. N. Amaral S. V. Buldyrev, D. Canning, P. Cizeau, X. Gabaix, P. Gopikrishnan, S. Havlin, Y. Lee, Y. Liu, R. N. Mantegna, K. Matia, M. Meyer, C.-K. Peng, V. Plerou, M. A. Salinger, and M. H. R. Stanley. [1.] See, e.g., R. N. Mantegna and H. E. Stanley, Introduction to Econophysics: Correlations & Complexity in Finance (Cambridge University Press, Cambridge, 1999). [2.] P. Gopikrishnan, B. Rosenow, V. Plerou, and H. E. Stanley, "Identifying Business Sectors from Stock Price Fluctuations," e-print cond-mat/0011145; V. Plerou, P. Gopikrishnan, L. A. N. Amaral, X. Gabaix, and H. E. Stanley, "Diffusion and Economic Fluctuations," Phys. Rev. E (Rapid Communications) 62, 3023-3026 (2000); P. Gopikrishnan, V. Plerou, X. Gabaix, and H. E. Stanley, "Statistical Properties of Share Volume Traded in Financial Markets," Phys. Rev. E (Rapid Communications) 62, 4493-4496 (2000).

Stanley, H. Eugene

2001-06-01

98

Updating the Lamellar Hypothesis of Hippocampal Organization  

PubMed Central

Andersen et al. (1971) proposed that excitatory activity in the entorhinal cortex propagates topographically to the dentate gyrus, and on through a “trisynaptic circuit” lying within transverse hippocampal “slices” or “lamellae.” In this way, a relatively simple structure might mediate complex functions in a manner analogous to the way independent piano keys can produce a nearly infinite variety of unique outputs. The lamellar hypothesis derives primary support from the “lamellar” distribution of dentate granule cell axons (the mossy fibers), which innervate dentate hilar neurons and area CA3 pyramidal cells and interneurons within the confines of a thin transverse hippocampal segment. Following the initial formulation of the lamellar hypothesis, anatomical studies revealed that unlike granule cells, hilar mossy cells, CA3 pyramidal cells, and Layer II entorhinal cells all form axonal projections that are more divergent along the longitudinal axis than the clearly “lamellar” mossy fiber pathway. The existence of pathways with “translamellar” distribution patterns has been interpreted, incorrectly in our view, as justifying outright rejection of the lamellar hypothesis (Amaral and Witter, 1989). We suggest that the functional implications of longitudinally projecting axons depend not on whether they exist, but on what they do. The observation that focal granule cell layer discharges normally inhibit, rather than excite, distant granule cells suggests that longitudinal axons in the dentate gyrus may mediate “lateral” inhibition and define lamellar function, rather than undermine it. In this review, we attempt a reconsideration of the evidence that most directly impacts the physiological concept of hippocampal lamellar organization.

Sloviter, Robert S.; L?mo, Terje

2012-01-01

99

Securing wide appreciation of health statistics  

PubMed Central

All the authors are agreed on the need for a certain publicizing of health statistics, but do Amaral Pyrrait points out that the medical profession prefers to convince itself rather than to be convinced. While there is great utility in articles and reviews in the professional press (especially for paramedical personnel) Aubenque, de Groot, and Kohn show how appreciation can effectively be secured by making statistics more easily understandable to the non-expert by, for instance, including readable commentaries in official publications, simplifying charts and tables, and preparing simple manuals on statistical methods. Aubenque and Kohn also stress the importance of linking health statistics to other economic and social information. Benjamin suggests that the principles of market research could to advantage be applied to health statistics to determine the precise needs of the “consumers”. At the same time, Aubenque points out that the value of the ultimate results must be clear to those who provide the data; for this, Kohn suggests that the enumerators must know exactly what is wanted and why. There is general agreement that some explanation of statistical methods and their uses should be given in the curricula of medical schools and that lectures and postgraduate courses should be arranged for practising physicians.

Pyrrait, A. M. DO Amaral; Aubenque, M. J.; Benjamin, B.; DE Groot, Meindert J. W.; Kohn, R.

1954-01-01

100

IRIS-HSVD algorithm for automatic quantitation of in vivo 31P MRS  

NASA Astrophysics Data System (ADS)

The rapid development of 31P magnetic resonance spectroscopy (MRS) has enhanced non-invasive measurement of brain metabolites, which is important for biomedical research. The accuracy and efficiency of data post processing and quantification is paramount for MRS applications. One of the difficulties with in vivo31P MRS data quantification is the separation of broad line-width resonances from chemical compounds’ resonances under a low signal-to-noise ratio condition. Furthermore, the chemical shift of some compounds caused by pH and Mg2+ concentration can be troublesome. This work aims to develop an automatic algorithm using a state-space based quantification approach to solve the above mentioned problems. To achieve this aim, we utilized an HSVD based adaptive optimizing prior knowledge algorithm, which uses so called “interference” signals to optimize prior knowledge iteratively for parameter optimization. We termed this algorithm IRIS-HSVD, which stands for Iterative Reduction of Interference Signal HSVD. The Monte Carlo evaluations of the algorithm were conducted with simulated data using in vivo parameters commonly obtained from a 4 T scanner. The performance of this algorithm using simulated data was compared to those of other automatic methods including HSVD and HTLS-PK. Examples of in vivo31P data obtained from brains of healthy subjects on a 4T MRI scanner were also presented, which demonstrated the superiority of the new method. The results were compared with those using AMARES.

Wang, Xin; Lee, Jing-Huei

2009-01-01

101

Capture-Zone Areas & the Wigner Distribution: New Case of Universal Scaling of Spacings in Fluctuating Systems  

NASA Astrophysics Data System (ADS)

When investigating scaling of island sizes during growth in d dimensions, one should consider the distribution of the areas of proximity cells around nucleation centers, i.e. capture zones (CZ). Using data from kinematic Monte Carlo studies, we find that the CZ distributions in both d = 1 and d = 2 are well described by the generalized Wigner distribution (GWD) from random-matrix theory: P(s)=as^(-bs^2). P(s) accounts for a broad range of fluctuation phenomena, inc. the terrace-width distribution (TWD) on vicinal surfaces. For CZ distributions, we find = i + d/2, where i is the critical nucleus size. We present a phenomenological justification by constructing a Langevin equation similar to that used in accounting for the equilibration of TWDs. We discuss implications for processing and analysis of experimental data. Mulheran et al., PRB 53 ('96) 10261, 54 ('96) 11681; EPL 49 ('00) 617, 65 (’04) 379. Amar, Family, et al., PRL 74 ('95) 2066; PRB 64 (’01) 205404. Evans, Bartelt, et al. PRB 66 (’02) 235410; SSR 61 ('06) 1. A. Pimpinelli, H. Gebremariam, & T.L. Einstein, PRL 95 ('05) 246101

Pimpinelli, A.; Einstein, T. L.

2007-03-01

102

Distribution of parvalbumin-immunoreactive cells and fibers in the human amygdaloid complex.  

PubMed

The calcium-binding protein, parvalbumin, was localized immunohistochemically in the human amygdaloid complex. Neuronal cell bodies and fibers that are immunoreactive to parvalbumin were observed in most of the amygdaloid nuclei and cortical areas. Three types of immunoreactive aspiny neurons, ranging from small spherical cells (type 1) to large multipolar cells (type 2) and fusiform cells (type 3), were observed. The densities of the types of neurons that were parvalbumin-immunoreactive varied in the different regions of the amygdala. The highest densities of parvalbumin-immunoreactive neurons were observed in the lateral nucleus, in the magnocellular and intermediate divisions of the basal nucleus, in the magnocellular division of the accessory basal nucleus and in the amygdalohippocampal area. The regions containing the lowest density of parvalbumin-immunoreactive cells were the paralaminar nucleus, the parvicellular division of the basal nucleus, the central nucleus, the medial nucleus and the anterior cortical nucleus. In general, the distribution of immunoreactive fibers and terminals paralleled that of immunoreactive cells. Parvalbumin-immunoreactive varicose fibers formed basket-like plexi and cartridges around the unstained neurons, which suggests that parvalbumin is located in GABAergic basket cells and chandelier cells, respectively. The distribution of parvalbumin-immunoreactive profiles in the human amygdaloid complex was similar to, rather than different from that previously reported in the monkey amygdala (Pitkänen and Amaral [1993] J. Comp. Neurol. 331:14-36). This study provides baseline information about the organization of GABAergic inhibitory circuitries in the human amygdaloid complex. PMID:8522643

Sorvari, H; Soininen, H; Paljärvi, L; Karkola, K; Pitkänen, A

1995-09-18

103

Proton magnetic resonance spectroscopy (1H-MRS) reveals the presence of elevated myo-inositol in the occipital cortex of blind subjects.  

PubMed

This paper is addressed to investigate whether proton magnetic resonance spectroscopy ((1)H-MRS) may provide the means to investigate changes associated to alterations of neural activity and sensory experience in the blind. We examined the relationships between different brain metabolite levels in 10 blind volunteers and 10 sighted subjects matched for age and gender. Adjusted levels of N-acetylaspartate (NAA), creatine (Cr), choline (Cho), glutamate/glutamine (Glx) and myo-inositol (mIno) in the occipital cortex region were quantified in the water-suppressed spectrum using the AMARES estimation algorithms. An unpaired two-tailed t-test was used to determine any significant difference in metabolite ratios. Our results show that none of the blind volunteers presented atrophy or any other MRI detectable degenerative change of the occipital cortex. The main finding was a significant increase of myo-inositol (mIno), a glial marker, in blind subjects compared to sighted controls. This simple sugar-like molecule can be found mainly within astrocytes, and cannot cross the blood-brain barrier. Therefore its increase could reflect glial proliferation or an increase in glial cell size. These results show that (1)H-MRS may help to understand the complex mechanisms involved in brain plasticity and suggest an active role of glial cells in the reorganization of the brain in response to visual deprivation. PMID:19426816

Bernabeu, Angela; Alfaro, Arantxa; García, Milagros; Fernández, Eduardo

2009-05-05

104

Clinical experience of PDT in Brazil: a 300 patient overview  

NASA Astrophysics Data System (ADS)

Clinical application of Photodynamic Therapy (PDT) in Brazil is a result of a pioneering work in a collaborative program involving the Physics Institute and the Medical School of the University of Sao Paulo and the Amaral Carvalho Cancer Hospital in the city of Jau, Sao Paulo. This work began in 1997 with the first patient treated in 1999. Up to the end of 2003 this program has treated over 300 patients and the ones with correct follow up had their lesions included in this report. The majority of the lesions were of non-melanoma skin cancer located on the head and neck region, but the group has also treated Esophagus, Bladder, Gynecological, chest wall recurrence of breast cancer, among others. The results have shown to be compatible with internationally reported data, and we have modified some application procedures towards to a better benefit for the patient and an optimization of the results. We present the overall results observed after 5 year of experimental clinical treatment.

Kurachi, Cristina; Ferreira, Juliana; Marcassa, Luis G.; Cestari Filho, Guilherme A.; Souza, Cacilda S.; Bagnato, Vanderlei S.

2005-04-01

105

Directionality of ambient noise measurements in Barrow Strait of the Canadian Arctic.  

PubMed

In August 2012, a field trial was carried out in Barrow Strait south of Gascoyne Inlet in the vicinity of 74.630 N 91.340 W. Underwater acoustic data was collected using a JASCO Autonomous Multichannel Acoustic Recorder (AMAR) and in-house designed sensor systems called Starfish Cubes. The Starfish Cubes were deployed twice, at different locations, each for one week duration and at depths of approximately 110 m. The Cubes consist of seven hydrophones with 1 m spacing and geometrically configured as three cross-dipoles with a central hydrophone, and have an operational frequency range of 5-750 Hz. During the trial 400 and 500 Hz tones were transmitted from discrete locations at various ranges. By using a beamforming method the tones were used to determine the orientation of the Starfish Cubes during their data collection periods. This enables investigation of the horizontal and vertical directionality of ambient noise. Unique localized sources contributing to the ambient noise are discussed such as a nearby grounded iceberg and a low frequency wandering tonal. PMID:24181447

Pelavas, Nicos; Pecknold, Sean; Lucas, Carmen E; Heard, Garry J

2013-11-01

106

The effects of meteorological factors on airborne fungal spore concentration in two areas differing in urbanisation level  

NASA Astrophysics Data System (ADS)

Although fungal spores are an ever-present component of the atmosphere throughout the year, their concentration oscillates widely. This work aims to establish correlations between fungal spore concentrations in Porto and Amares and meteorological data. The seasonal distribution of fungal spores was studied continuously (2005-2007) using volumetric spore traps. To determine the effect of meteorological factors (temperature, relative humidity and rainfall) on spore concentration, the Spearman rank correlation test was used. In both locations, the most abundant fungal spores were Cladosporium, Agaricus, Agrocybe, Alternaria and Aspergillus/Penicillium, the highest concentrations being found during summer and autumn. In the present study, with the exception of Coprinus and Pleospora, spore concentrations were higher in the rural area than in the urban location. Among the selected spore types, spring-autumn spores ( Coprinus, Didymella, Leptosphaeria and Pleospora) exhibited negative correlations with temperature and positive correlations both with relative humidity and rainfall level. On the contrary, late spring-early summer (Smuts) and summer spores ( Alternaria, Cladosporium, Epicoccum, Ganoderma, Stemphylium and Ustilago) exhibited positive correlations with temperature and negative correlations both with relative humidity and rainfall level. Rust, a frequent spore type during summer, had a positive correlation with temperature. Aspergillus/Penicillium, showed no correlation with the meteorological factors analysed. This knowledge can be useful for agriculture, allowing more efficient and reliable application of pesticides, and for human health, by improving the diagnosis and treatment of respiratory allergic disease.

Oliveira, M.; Ribeiro, H.; Delgado, J. L.; Abreu, I.

2009-01-01

107

The impact of early amygdala damage on juvenile rhesus macaque social behavior.  

PubMed

The present experiments continue a longitudinal study of rhesus macaque social behavior following bilateral neonatal ibotenic acid lesions of the amygdala or hippocampus, or sham operations. Juvenile animals (approximately 1.5-2.5 years) were tested in four different social contexts-alone, while interacting with one familiar peer, while interacting with one unfamiliar peer, and in their permanent social groups. During infancy, the amygdala-lesioned animals displayed more interest in conspecifics (indexed by increased affiliative signaling) and paradoxically demonstrated more submission or fear (Bauman, Lavenex, Mason, Capitanio, & Amaral, 2004a, this journal). When these animals were assessed as juveniles, differences were less striking. Amygdala-lesioned animals generated fewer aggressive and affiliative signals (e.g., vocalizations, facial displays) and spent less time in social interactions with familiar peers. When animals were observed alone or with an unfamiliar peer, amygdala-lesioned animals, compared with other subjects, spent more time being inactive and physically explored the environment less. Despite the subtle, lesion-based differences in the frequency and duration of specific social behaviors, there were lesion-based differences in the organization of behavior such that lesion groups could be identified based on the patterning of social behaviors in a discriminant function analysis. The findings indicate that, although overall frequencies of many of the observed behaviors do not differ between groups, the general patterning of social behavior may distinguish the amygdala-lesioned animals. PMID:24047387

Bliss-Moreau, Eliza; Moadab, Gilda; Bauman, Melissa D; Amaral, David G

2013-09-18

108

A new method for measuring guanidine in uremia  

Microsoft Academic Search

Riassunto Si descrive un metodo per la determinazione della guanidine nei liquidi biologici e si rileva che essa aumenta nel siero uremico fino a 30 volte la norma (valore medio normale: 1.41±0.49 ?g\\/100 ml) e che nei cani uremici la concentrazione muscolare è di quasi 3 volte superiore a quella plasmatica. La eliminazione urinaria non è diversa fra normali ed

G. C. Menichini; S. Giovannetti; S. Lupetti

1973-01-01

109

High resolution topography of the Rainbow hydrothermal area, Mid-Atlantic Ridge, 36° 14 N  

NASA Astrophysics Data System (ADS)

The Rainbow hydrothermal field at 36° 14 N on the Mid-Atlantic Ridge is one of the few known sites hosted in ultramafic environment. The active site is located on a dome structure in the non-transform offset between the AMAR and South AMAR second-order ridge segments. One of the objectives of Cruise MOMAR DREAM (Aug-Sept 2008, R/V Atalante and ROV Victor) was a near-bottom detailed and exhaustive mapping of the hydrothermal site and its vicinities using the multibeam echosounder Reson SeaBat 7125 (400 Khz) and the high sensitivity photographic camera OTUS installed on ROV Victor. This first high resolution survey of the Rainbow massif has provided bathymetric maps with a resolution of a centimeter in depth and space for the surveys carried out at the altitude of 10 m (close to Site Rainbow), and some ten centimeters for the surveys at 50 m (a larger area, 4x3 km long). The frequency of the pings is 7 cycles by second for 512 beams with an opening of 150° and a speed of the ROV of 0.3-0.4 m/s. The data have been processed with the CARAIBES software of IFREMER. The ROV is positioned with the Posidonia Ultra Short Baseline system (USBL) and an estimated navigation from the loch and heading of the vehicle. The active hydrothermal site extends along an EW direction on about 200 m. It is localized on one important mound, around 20 m in diameter, which displays the highest chimneys like "Thermitiere". Small chimneys are sparse at the east of this mound, and another inactive mound is located 200m in the northeast. The whole hydrothermal area is located just north of a highly fractured domain made of a series of north-south high- angle normal faults making steps at least 40 meters high. This 400 m wide tectonic area extends to the south on about 600-700 m. The faults give access to the stockwork of the hydrothermal system, which has been sampled. North of the hydrothermal area, a 400 m large landslide cut across the serpentinite environment. At a wider scale, the tectonics of the Rainbow Massif is dominated by a N-S trending fault pattern on its western flank, and a series of SW-NE ridges on its northeastern side. These ridges are bordered by a series of normal fault with facing-slopes to the south-east. Smaller NW-SE oriented fractures seem to affect the whole Rainbow massif. In conclusion, the Rainbow massif is highly tectonized by normal faults oriented along three different directions. No evidence of the large low-angle fault system predicted by the core complex model could be observed. Momardream party : K. Bukas, V. Cueff Gauchard, L. Durand, F. Gaill, C. Konn, F. Lartaud, N. Le Bris, G. Musset, A. Nunes, J. Renard, V. Riou, A. Tasiemski, P. Torres, I. Vojdani, M. Zbinden

Gente, P.; Thibaud, R.; Dyment, J.; Fouquet, Y.; Ildefonse, B.; Hoise, E.; Bissessur, D.; Yatheesh, V.; Scientific Party, M.

2008-12-01

110

New lamellar phase with pores in the chain-melting regime of an anionic phospholipid dispersion  

NASA Astrophysics Data System (ADS)

The anionic phospholipid DMPG (dimyristoyl phosphatidylglycerol) may exhibit in water, instead of a unique melting transition of the hydrocarbon chains, a "melting regime" for pH values above 5, where the phosphate groups are deprotonated, and for low ionic strength, where charge screening is weak. The chain-melting process of DMPG starts at T_m^on (onset of the melting regime at ~ 20°C), but the complete fluid phase exists only above T_m^off (offset of the melting regime at ~ 30°C). In a recent paper we developed a SAXS model for a bilayer with pores to explain SAXS results obtained for concentrations up to 70 mM DMPG (F. Spinozzi, L. Paccamiccio, P. Mariani, and L. Q. Amaral, Langmuir, in print, 2010). A new lamellar phase with pores, starting 3°C above T_m^on and existing up to 4°C above T_m^off, was also identified at the higher investigated DMPG concentrations (up to 300 mM DMPG). In this paper we focus in more detail the SAXS curves obtained in the concentration interval 70-300 mM DMPG. The slope of the scattering profile in the very small q range, as well as the anomalous increase in the intensity of the bilayer band centered around 0.12 Å-1 after T_m^off, have been in particular analyzed. By using a model of water-penetrated bilayers, the volume fractions of DMPG and water molecules inside the bilayer was derived as a function of temperature.

Spinozzi, Francesco; Mariani, Paolo; Paccamiccio, Lydia; Amaral, Lia Q.

2010-10-01

111

New Optical Emissions in the Terrestrial Nightglow: The O2(c-b) Bands  

NASA Astrophysics Data System (ADS)

Sky spectra from the Keck I and II telescopes in the 380-450 nm region have revealed the presence of a new O2 band system, the transition between the c1?u- b1?g+ states. There is only a Q-branch associated with the transition and the unusual symmetry favors emission from high rotational le vels. Radiation from c(v = 9,10) is particularly pronounced, but O2(c) population is seen over the range v = 5-11. The sparse individual lines of the 9-1 c-b band are as bright as any Herzberg I or Chamberlain band line at wavelengths longer than 365 nm. We have not yet seen lines in the c-X Herzberg II system in the present data set at wavelengths greater than 337 nm. The probable explanation for the c-b transition being evident while the c-X transition is not is that the c-b emission is concentrated in 1/4 as many lines, and the strongest c-X bands are at shorter wavelengths, inaccessible from the ground. We presently estimate an emission intensity of 30 R for the c-b system. As the term energies for both states are accurately known, the lines can be used for precise calibration of aeronomical and astronomical spectra, as well as for investigations on the c1?u- state. Loss rate coefficients for the c(v = 8-11) levels are currently being determined in the laboratory for the temperature range relevant to the terrestrial upper atmosphere[1]. [1] G. Amaral, G. B. Bressler, E. S. Hwang, K. Kalogerakis, A. Totth, and R. A. Copeland (in preparation); R. A. Copeland, K. Knutsen, M. E. Onishi, and T. Yalcin, J. Chem. Phys. 105, 10340 (1994). This work was supported by a grant from the NSF CEDAR program.

Slanger, T. G.; Cosby, P. C.; Huestis, D. L.

2002-05-01

112

Distribution of oceanic and continental leads in the Arabian-Nubian Shield  

USGS Publications Warehouse

New common lead data for feldspar, whole-rock, and galena samples from the Arabian-Nubian Shield, together with data from previous work, can be divided into two main groups. Group I leads have oceanic (mantle) characteristics, whereas group II leads have incorporated a continental-crustal component of at least early Proterozoic age. The group I leads are found in rocks from the Red Sea Hills of Egypt and the western and southern parts of the Arabian Shield. Group II leads are found in rocks from the northeastern and eastern parts of the Arabian Shield, as well as from the southeastern Shield near Najran. They are also found in rocks to the south in Yemen, to the east in Oman, and to the west at Aswan, Egypt. This distribution of data suggests that the Arabian-Nubian Shield has an oceanic core flanked by rocks that have developed, at least in part, from older continental material. Two mechanisms are suggested by which this older lead component could have been incorporated into the late Proterozoic rocks, and each may have operated in different parts of the Shield. The older lead component either was derived directly from an underlying early Proterozoic basement or was incorporated from subducted pelagic sediments or sediments derived from an adjacent continent. New U-Pb zircon data indicate the presence of an early Proterozoic basement southeast of Jabal Dahul in the eastern Arabian Shield. These data, together with 2,000-Ma-old zircons from the Al Amar fault zone, verify the implication of the common lead data that at least a part of the eastern Arabian Shield has an older continental basement. Because continental margins are particularly favorable locations for development of ore deposits, these findings may have important economic implications, particularly for tin, tungsten, and molybdenum exploration. ?? 1983 Springer-Verlag.

Stacey, J. S.; Stoeser, D. B.

1983-01-01

113

Microstructural finite strain analysis and 40Ar/39Ar evidence for the origin of the Mizil gneiss dome, eastern Arabian Shield, Saudi Arabia  

NASA Astrophysics Data System (ADS)

The Mizil antiform is a gneiss-cored culmination situated near the northern end of the Ar Rayn island arc terrane, which is the easternmost exposed tectonic unit of the Arabian Shield. This domal structure has a mantle of metamorphosed volcanosedimentary rocks belonging to the Al-Amar Group, and an igneous interior made up of foliated granodiorite-tonalite with adakitic affinity. The gneissic core has a SHRIMP U-Pb zircon age of 689 ± 10 Ma making it the oldest rock unit in the Ar Rayn terrane. An adakite diapir, formed by the melting of the subducted crust of a young marginal basin, and rising through the volcanosedimentary succession of the Ar Rayn island arc is thought to have caused the observed doming. Relatively uniform strain throughout the dome combined with strong vertical shortening and the roughly radial pattern of stretching lineation is consistent with diapirism; the absence of strain localization rules out detachment faulting as a causative mechanism. Amphibolites from the metamorphic envelope have an 40Ar/39Ar age of 615 ± 2 Ma; the age gap between core and cover is thought to reflect the resetting of metamorphic ages during the final suturing event, a phenomenon that is often observed throughout the eastern shield. Aeromagnetic anomalies beneath the Phanerozoic sedimentary cover indicate the presence of a collage of accreted terranes east of the Ar Rayn terrane that were probably amalgamated onto the Arabian margin during the latest stages of the closure of the Mozambique ocean; culminant orogeny is believed to have taken place between 620 and 600 Ma as these terrane collided with a major continental mass to the east referred to here as the eastern Arabian block (EAB). The Mizil gneiss dome is therefore considered to have formed in a convergent contractional setting rather than being the outcome of extensional post-orogenic collapse.

Al-Saleh, Ahmad M.; Kassem, Osama M. K.

2012-07-01

114

A multicentre study of antifungal strategies and outcome of Candida spp. peritonitis in intensive-care units.  

PubMed

Information on the species causing Candida peritonitis, their in vitro susceptibility, antifungal strategies in this setting and patient outcome is still scarce. AmarCand was a prospective, non-interventional study in 271 adult intensive-care unit (ICU) patients with proven invasive Candida infection who received systemic antifungal therapy (France, 2005-2006). Of these ICU patients, 93 (median age 65 years, simplified acute physiology score II 52) had Candida peritonitis, including 73 nosocomial peritonitis, 53 concomitant bacterial peritoneal infections and 26 candidaemias. Candida species were C. albicans (n = 63/108 isolates, 58%), C. glabrata (n = 22, 20%), C. krusei (n = 9), C. kefyr (n = 5), C. parapsilosis (n = 3), C. tropicalis (n = 3), C. ciferii (n = 2) and C. lusitaniae (n = 1). Of tested isolates, 28% were fluconazole-resistant or susceptible dose-dependent (C. albicans 3/32, C. glabrata 9/14, C. krusei 4/4). Empiric antifungal treatment was started 1 day (median) after peritonitis diagnosis, with fluconazole (n = 2 patients), caspofungin (n = 12), voriconazole (n = 3), amphotericin B (n = 2), or a combination (n = 4). Following susceptibility testing, empiric antifungal treatment was judged inadequate in 9/45 (20%) patients and modified in 30 patients (fluconazole was replaced by caspofungin (n = 14) or voriconazole (n = 4)). Mortality in ICU was 38% (35/93) and was not influenced by type of Candida species, fluconazole susceptibility, time to treatment, candidaemia, nosocomial acquisition, or concomitant bacterial infection. No specific factors for death were identified. In summary, a high proportion of fluconazole-resistant or susceptible dose-dependent strains was cultured. These results confirm the high mortality rates of Candida peritonitis and plead for additional investigation in this population. Antifungal treatment for severe cases of Candida peritonitis in ICU patients remains the standard care. PMID:20825438

Montravers, P; Mira, J-P; Gangneux, J-P; Leroy, O; Lortholary, O

2010-10-19

115

Optical Magnetometry  

NASA Astrophysics Data System (ADS)

Part I. Principles and Techniques: 1. General principles and characteristics of optical magnetometers D. F. Jackson Kimball, E. B. Alexandrov and D. Budker; 2. Quantum noise in atomic magnetometers M. V. Romalis; 3. Quantum noise, squeezing, and entanglement in radio-frequency optical magnetometers K. Jensen and E. S. Polzik; 4. Mx and Mz magnetometers E. B. Alexandrov and A. K. Vershovskiy; 5. Spin-exchange-relaxation-free (serf) magnetometers I. Savukov and S. J. Seltzer; 6. Optical magnetometry with modulated light D. F. Jackson Kimball, S. Pustelny, V. V. Yashchuk and D. Budker; 7. Microfabricated atomic magnetometers S. Knappe and J. Kitching; 8. Optical magnetometry with nitrogen-vacancy centers in diamond V. M. Acosta, D. Budker, P. R. Hemmer, J. R. Maze and R. L. Walsworth; 9. Magnetometry with cold atoms W. Gawlik and J. M. Higbie; 10. Helium magnetometers R. E. Slocum, D. D. McGregor and A. W. Brown; 11. Surface coatings for atomic magnetometry S. J. Seltzer, M.-A. Bouchiat and M. V. Balabas; 12. Magnetic shielding V. V. Yashchuk, S.-K. Lee and E. Paperno; Part II. Applications: 13. Remote detection magnetometry S. M. Rochester, J. M. Higbie, B. Patton, D. Budker, R. Holzlöhner and D. Bonaccini Calia; 14. Detection of nuclear magnetic resonance with atomic magnetometers M. P. Ledbetter, I. Savukov, S. J. Seltzer and D. Budker; 15. Space magnetometry B. Patton, A. W. Brown, R. E. Slocum and E. J. Smith; 16. Detection of biomagnetic fields A. Ben-Amar Baranga, T. G. Walker and R. T. Wakai; 17. Geophysical applications M. D. Prouty, R. Johnson, I. Hrvoic and A. K. Vershovskiy; Part III. Broader Impact: 18. Tests of fundamental physics with optical magnetometers D. F. Jackson Kimball, S. K. Lamoreaux and T. E. Chupp; 19. Nuclear magnetic resonance gyroscopes E. A. Donley and J. Kitching; 20. Commercial magnetometers and their application D. C. Hovde, M. D. Prouty, I. Hrvoic and R. E. Slocum; Index.

Budker, Dmitry; Kimball, Derek F. Jackson

2013-03-01

116

Detection of a young stellar population in the background of open clusters in the Third Galactic Quadrant (implicancies)  

NASA Astrophysics Data System (ADS)

We report on the detection of a young stellar population (50 < age < 100 Myrs) in the background of young open clusters in the Third Galactic Quandrant that follows remarkably well the trace of the Norma-Cygnus spiral arm as defined by CO clouds. This population coincides with the one recently detected in 3 intermediate-age open clusters and suggested to be a 1-2 Gyr old population belonging to the Canis Major overdensity (Bellazzini et al. 2004). The distances and ages of the population we detected definitely rule out this possibility.

Vázquez, R. A.; Carraro, G.; Moitinho, A.; Baume, G.

117

Aplicación del Teorema de Nekhorochev para tiempos de estabilidad en Mecánica Celeste  

NASA Astrophysics Data System (ADS)

En Mecánica Celeste, uno de los problemas centrales consiste en la determinación de los tiempos de estabilidad. El teorema de Nekhorochev proporciona un método para dicho estudio, para un sistema determinado por un hamiltoniano descripto en las variables acción-ángulo. El trabajo consiste en la acotación tanto del potencial perturbador y de la matriz hessiana del hamiltoniano integrable para determinar luego el tiempo de estabilidad de dicho sistema, donde por estabilidad se entiende la separación en norma infinito en el espacio de las acciones.

Miloni, O.; Núñez, J.; Brunini, A.

118

Political dreams, practical boundaries: the case of the Nursing Minimum Data Set, 1983-1990.  

PubMed

The initial development of the Nursing Minimum Data Set (NMDS) was analyzed based on archival material from Harriet Werley and Norma Lang, two nurses involved with the project, and American Nurses Association materials. The process of identifying information to be included in the NMDS was contentious. Individual nurses argued on behalf of particular data because of a strong belief in how nursing practice (through information collection) should be structured. Little attention was paid to existing practice conditions that would ultimately determine whether the NMDS would be used. PMID:21329148

Hobbs, Jennifer

2011-01-01

119

IGR J16493-4348 - a radiopulsar or a new X-ray binary  

NASA Astrophysics Data System (ADS)

During the Galactic plane survey carried out with INTEGRAL in 2004 a weak X-ray source was marginally (S/N=6.3) detected with IBIS/ISGRI at the position coincident with that of the 0.87 s radiopulsar PSR J1649-4349 (Bird et al., ApJ, 607, L33, 2004; Bassani et al. ATEL #232). This source was recently detected again during the INTEGRAL deep survey of the Norma Arm region at the S/N ratio of 9.1 in the 18-45 keV band.

Grebenev, S. A.; Bird, A. J.; Molkov, S. V.; Soldi, S.; Kretschmar, P.; Diehl, R.; Budz-Joergensen, C.; McBreen, B.

2005-04-01

120

THE EDGE OF THE YOUNG GALACTIC DISK  

SciTech Connect

In this work, we report and discuss the detection of two distant diffuse stellar groups in the third Galactic quadrant. They are composed of young stars, with spectral types ranging from late O to late B, and lie at galactocentric distances between 15 and 20 kpc. These groups are located in the area of two cataloged open clusters (VdB-Hagen 04 and Ruprecht 30), projected toward the Vela-Puppis constellations, and within the core of the Canis Major overdensity. Their reddening and distances have been estimated by analyzing their color-color and color-magnitude diagrams, derived from deep UBV photometry. The existence of young star aggregates at such extreme distances from the Galactic center challenges the commonly accepted scenario in which the Galactic disk has a sharp cutoff at about 14 kpc from the Galactic center and indicates that it extends to much greater distances (as also supported by the recent detection of CO molecular complexes well beyond this distance). While the groups we find in the area of Ruprecht 30 are compatible with the Orion and Norma-Cygnus spiral arms, respectively, the distant group we identify in the region of VdB-Hagen 04 lies in the external regions of the Norma-Cygnus arm, at a galactocentric distance ({approx}20 kpc) where no young stars have been detected so far in the optical.

Carraro, Giovanni [ESO, Alonso de Cordova 3107, 19100 Santiago de Chile (Chile); Vazquez, Ruben A. [Facultad de Ciencias Astronomicas y Geofisicas (UNLP), Instituto de Astrofisica de La Plata (CONICET, UNLP), Paseo del Bosque s/n, La Plata (Argentina); Costa, Edgardo [Departamento de AstronomIa, Universidad de Chile, Casilla 36-D, Santiago (Chile); Perren, Gabriel [Instituto de Fisica de Rosario, IFIR (CONICET-UNR), Parque Urquiza, 2000 Rosario (Argentina); Moitinho, Andre [SIM/IDL, Faculdade de Ciencias da Universidade de Lisboa, Ed. C8, Campo Grande, 1749-016 Lisboa (Portugal)

2010-08-01

121

Micropropagation of Codiaeum variegatum (L.) Blume and regeneration induction via adventitious buds and somatic embryogenesis.  

PubMed

Codiaeum variegatum (L) Blume cv. "Corazon de oro" and cv. "Norma" are successfully micropropagated when culture are initiated with explants taken from newly sprouted shoots. The establishment and multiplication steps are possible when 1 mg/L BA or 1 mg/L IAA and 3 mg/L 2iP are added to MS medium, according to the cultivar respectively selected.Adventive organogenesis and somatic embryogenesis are induced from leaf explants taken from in vitro buds of croton. On leaf-sectioned of "Corazon de oro" cultured in vitro, 1 mg/L BA stimulates continuous somatic embryos development and induces some shoots too. Replacing BA with 1 mg/L TDZ induces up to 100% bud regeneration in the same explants. On the other hand, leaf-sectioned of C. variegatum cv. Norma does not start somatic embryo differentiation if 1 mg/L TDZ is not added to the MS basal medium. Incipient callus is observed after 30 days of culture, and then, subculture to MS with 1 mg/L BA allows the same process to show on the "Corazon de oro" cultivar. Somatic embryos show growth arrest that is partially overcome by transfer to hormone-free basal medium with activated charcoal. Root induction is possible on basal medium plus 1 mg/L IBA. Plantlets in the greenhouse have variegated leaves true-to-type. PMID:20099102

Radice, Silvia

2010-01-01

122

A lead isotope study of mineralization in the Saudi Arabian Shield  

USGS Publications Warehouse

New lead isotope data are presented for some late Precambrian and early Paleozoic vein and massive sulfide deposits in the Arabian Shield. Using the Stacey Kramers (1975) model for lead isotope evolution, isochron model ages range between 720 m.y. and 420 m.y. Most of the massive sulfide deposits in the region formed before 680 m.y. ago, during evolution of the shield. Vein type mineralization of higher lead content occurred during the Pan African event about 550 m.y. ago and continued through the Najd period of extensive faulting in the shield that ended about 530 m.y. ago. Late post-tectonic metamorphism may have been responsible for vein deposits that have model ages less than 500 m.y. Alternatively some of these younger model ages may be too low due to the mineralizing fluids acquiring radiogenic lead from appreciably older local crustal rocks at the time of ore formation. The low207Pb/204Pb ratios found for the deposits in the main part of the shield and for those in north-eastern Egypt, indicate that the Arabian craton was formed in an oceanic crustal environment during the late Precambrian. Involvement of older, upper-crustal material in the formation of the ore deposits in this part of the shield is precluded by their low207Pb/204Pb and208Pb/204Pb characteristics. In the eastern part of the shield, east of longitude 44??20???E towards the Al Amar-Idsas fault region, lead data are quite different. They exhibit a linear207Pb/204Pb-206Pb/204Pb relationship together with distinctly higher208Pb/204Pb characteristics. These data imply the existence of lower crustal rocks of early Proterozoic age that apparently have underthrust the shield rocks from the east. If most of the samples we have analyzed from this easterly region were mineralized 530 m.y. ago, then the age of the older continental rocks is 2,100??300 m.y. (2??). The presence of upper crustal rocks, possibly also of early Proterozoic age, is indicated by galena data from Hailan in South Yemen and also from near Muscat in Oman. These data are the first to indicate such old continental material in these regions. ?? 1980 Springer-Verlag.

Stacey, J. S.; Doe, B. R.; Roberts, R. J.; Delevaux, M. H.; Gramlich, J. W.

1980-01-01

123

The Distribution of Magnesium on Mercury’s Surface as Measured by the MESSENGER X-Ray Spectrometer  

NASA Astrophysics Data System (ADS)

We have used >6000 individual measurements acquired over two years by MESSENGER’s X-Ray Spectrometer (XRS) to construct a global map of the Mg/Si ratio across Mercury’s surface. In the northern hemisphere, both spatial coverage and resolution are sufficient to compare our map with geologic features. The global Mg/Si ratio varies from 0.15 to 0.90, which we attribute mainly to variations in Mg given that MESSENGER gamma-ray measurements indicate little variation in Si. Our work supports earlier results showing that large expanses of volcanic smooth plains at northern latitudes and in the interior of the Caloris basin have relatively uniform and low Mg/Si. In contrast, older intercrater plains and heavily cratered terrain (IcP-HCT) show striking variability in Mg/Si. The highest Mg/Si ratios (> 0.7) are seen in low-reflectance ejecta deposits that surround the Rachmaninoff impact basin, and in a large (>5×106 km2), relatively homogeneous region that is centered at ~30°N, 290°E. This region also has the lowest Al and highest Ca and S abundances derived from XRS data. Comparison with a map of crustal thickness (derived from MESSENGER geophysical data) shows that the large Mg-rich region coincides with an area of relatively thin crust. The shared boundaries (between high and low Mg, and between thick and thin crust) are particularly sharp along the northern and eastern edges; the latter is also near a major north-south-oriented fold-and-thrust belt and a region with a high density of observed hollows. There may also be a correlation between the Mg content and age of Mercury’s surface. The large Mg-rich region overlaps partly with some of Mercury’s oldest terrain as inferred from crater densities. Younger parts of the IcP-HCT (e.g., around Amaral crater) have significantly lower Mg/Si than the planetary average. Mercury’s surface is likely to have been extensively resurfaced by volcanism early in the planet’s history, so Mg/Si variations within regions of IcP-HCT may be indicative of temporal variation in the depth or degree of partial melting and/or chemical heterogeneity in Mercury’s mantle.

Nittler, Larry R.; Weider, S. Z.; Starr, R. D.; Crapster-Pregont, E. J.; Byrne, P. K.; Denevi, B. W.; Blewett, D. T.; Solomon, S. C.

2013-10-01

124

A multiscale hybrid algorithm for fluctuating hydrodynamics  

NASA Astrophysics Data System (ADS)

We develop an algorithmic hybrid for simulating multiscale fluid flow with microscopic fluctuations. Random fluctuations occur in fluids at microscopic scales, and these microscopic fluctuations can lead to macroscopic system effects. For example, in the Rayleigh-Taylor problem, where a relatively heavy gas sits on top of a relatively light gas, spontaneous microscopic fluctuation at the interface of the gases leads to turbulent mixing. Given near-term computational power, the physical and temporal domain on which these systems can be studied using traditional particle simulations is extremely limited. Therefore, we seek algorithmic solutions to increase the effective computing power available to study such problems. We develop an explicit numerical solver for the Landau-Lifshitz Navier-Stokes (LLNS) equations, which incorporate thermal fluctuations into macroscopic hydrodynamics via stochastic; fluxes. A major goal is to correctly preserve the influence of the microscopic fluctuations on the behavior of the system. We show that several classical approaches fail to accurately reproduce fluctuations in energy or density, and we introduce a customized conservative centered scheme with a third-order Runge-Kutta temporal integrator that is specficially designed to produce correct fluctuations in all conserved quantities. We then use the adaptive mesh and algorithm refinement (AMAR) paradigm to create a multiscale hybrid method by coupling our LLNS solver with the direct simulation Monte Carlo (DSMC) particle method. We present numerical tests of systems in and out of equilibrium, including time-dependent systems, and demonstrate dynamic adaptive refinement. Mean system behavior and second moment statistics of our simulations match theoretical values and benchmarks well. We find that particular attention should be paid to the spectrum of the flux at the interface between the particle and continuum methods, specifically at non-hydrodynamic time scales. As an extension of the basic hybrid method, we consider the dynamics of a binary mixture of gases. Benchmark test problems, including a system under concentration gradient, match theory and molecular simulation well. We find that to study mixtures of gases with unequal masses, at equilibrium it may be reasonable to neglect the Soret effect; however, inclusion of the baro-diffusion effect is important.

Williams, Sarah Anne

125

Parkes H I observations of galaxies behind the southern Milky Way. II. The Crux and Great Attractor regions (l ? 289°to 338°)  

NASA Astrophysics Data System (ADS)

As part of our programme to map the large-scale distribution of galaxies behind the southern Milky Way, we observed 314 optically-selected, partially-obscured galaxies in the Zone of Avoidance (ZOA) in the Crux and Great Attractor (GA) regions. An additional 29 galaxies were observed in the Vela ZOA survey region (because of the small numbers they are not discussed any further). The observations were conducted with the Parkes 64 m (210 ft) radio telescope, in a single-pixel pointed mode, reaching an rms noise level of typically 2-6 mJy over the velocity search range of 400 < v < 10 500 km s-1. A total of 162 galaxies were detected (plus 14 galaxies in the Vela region). The detection rate is slightly higher than for the Hydra/Antlia region (52% versus 45%) observed in the same way. This can be explained by the prominence of the GA overdensity in the survey regions, which leads to a relatively higher fraction of nearby galaxies. It is also evident from the quite narrow velocity distribution (largely confined to 3000-6000 km s-1) and deviates significantly from the expectation of a uniform galaxy distribution for the given sensitivity and velocity range. No systematic differences were found between detections and non-detections, in terms of latitude, foreground extinction, or environment, except for the very central part of the rich Norma cluster, where hardly any galaxies were detected. A detailed investigation of the H i content of the galaxies reveals strong H i deficiency at the core of the Norma cluster (within about a 0.4 Abell radius), similar to what has been found in the Coma cluster. The redshifts obtained by this observing technique result in a substantial reduction of the so-called redshift ZOA. This is obvious when analysing the large-scale structure of the new H i data in combination with data from other (optical) ZOA redshift surveys. The lower latitude detections provide further evidence of the extension of the Norma Wall, across the ZOA, in particular its bending towards the Cen-Crux clusters above the Galactic plane at slightly higher redshift, rather than a straight continuation towards the Centaurus clusters. Figure [see full textsee full textsee full textsee full textsee full text] is only available in electronic form at http://www.aanda.org Table [see full textsee full textsee full textsee full textsee full text] is also available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/505/1049

Schröder, A. C.; Kraan-Korteweg, R. C.; Henning, P. A.

2009-10-01

126

Decline and present status of breeding peregrine falcons in Oregon  

USGS Publications Warehouse

In 1979, only one Peregrine Falcon pair (they fledged two young) and a single adult male were located. A population decline east of the Cascades began in rhe 1930's, probably resulting from a climatic change (drought); however, a statewide decline began in the late 1940's, accelerated in the 1950's, and by the 1960's few pairs remained. The statewide decline closely paralleled the pattern of DDT use. Furthermore, DDE was found in membranes of peregrine eggs from nearby California as early as 1948. Moreover, an unhatched Peregrine Falcon egg found at the Oregon eyrie in 1979 contained 19 ppm DDE and lesser amounts of other contaminants. The eggshell was 19% thinner than normaL The future of the nearly extirpated Peregrine Falcon in Oregon remains uncertain in spite of improved water and habitat conditions in eastern Oregon. Reintroduction of captive-bred birds seems to be the last hope.

Henny, C.J.; Nelson, M.W.

1981-01-01

127

Metastudy of the Spiral Structure of Our Home Galaxy  

NASA Astrophysics Data System (ADS)

The current maps of the Milky Way disk still have large differences, much like early maps of the Earth's continents made in the 16th century had sizeable differences in the locations of continents and many areas labeled ``terra incognita.'' Exactly where are the spiral arms in our home Galaxy (in radius and longitude)? Here a meta-analysis is made of the recent (1995-2001) observational data on the pitch angle (p) and the number (m) of spiral arms in our home Galaxy. In order to clarify our image of the structure of the Milky Way, logarithmic model arms of the form ln(r/r0)=k(?-?0) are fitted to the observed tangents to the spiral arms and to the observed position angle (P.A.) of the Galaxy's central bar. The main results are that p=12deg inward and m=4, with logarithmic spiral arm parameters r0=2.3 kpc and ?0=0deg for the Norma arm. The value of ?0 for the other three arms is modeled by rotating the Norma arm in steps of 90°. These values are similar to those found by Ortiz & Lépine using earlier observational data, with some differences. The best model predicts an interarm distance near the Sun of S=2.5 kpc (from the Sagittarius to the Perseus arm) and a distance from the Sun to the Sagittarius arm of 0.9 kpc. These values are compared to our limited and uncertain data from the observed nearby spiral arms. These predicted values near the Sun differ substantially from the predictions of Ortiz & Lépine, as discussed in the text.

Vallée, Jacques P.

2002-02-01

128

The Flow-field From Galaxy Groups In 2MASS  

NASA Astrophysics Data System (ADS)

We present the first model of a flow-field in the nearby Universe (cz < 12,000 km/s) constructed from groups of galaxies identified in an all-sky flux-limited survey. The Two Micron All-Sky Redshift Survey (2MRS), upon which the model is based, represents the most complete survey of its class and, with near-IR fluxes, provides the optimal method for tracing baryonic matter in the nearby Universe. Peculiar velocities are reconstructed self-consistently with a density-field based upon groups identified in the 2MRS Ks<11.75 catalog. The model predicts infall toward Virgo, Perseus-Pisces, Hydra-Centaurus, Norma, Coma, Shapley and Hercules, and most notably predicts backside-infall into the Norma Cluster. We discuss the application of the model as a predictor of galaxy distances using only angular position and redshift measurements. By calibrating the model using measured distances to galaxies inside 3000 km/s, we show that, for a randomly-sampled 2MRS galaxy, improvement in the estimated distance over the application of Hubble's law is expected to be 30%, and considerably better in the proximity of clusters. We test the model using distance estimates from the SFI++ sample, and find evidence for improvement over the application of Hubble's law to galaxies inside 4000 km/s, although the performance varies depending on the location of the target. This work has been supported by NSF grant AST 0406906 and the Massachusetts Institute of Technology Bruno Rossi and Whiteman Fellowships.

Crook, Aidan; Huchra, J.; Macri, L.; Masters, K.; Jarrett, T.

2011-01-01

129

Yakima River Species Interactions Study; Yakima/Klickitat Fisheries Project Monitoring and Evaluation Report 7 of 7, 2003-2004 Annual Report.  

SciTech Connect

This report is intended to satisfy two concurrent needs: (1) provide a contract deliverable from the Washington Department of Fish and Wildlife (WDFW) to the Bonneville Power Administration (BPA), with emphasis on identification of salient results of value to ongoing Yakima/Klickitat Fisheries Project (YKFP) planning, and (2) summarize results of research that have broader scientific relevance. This is the twelfth of a series of progress reports that address species interactions research and supplementation monitoring of fishes in response to supplementation of salmon and steelhead in the upper Yakima River basin (Hindman et al. 1991; McMichael et al. 1992; Pearsons et al. 1993; Pearsons et al. 1994; Pearsons et al. 1996; Pearsons et al. 1998, Pearsons et al. 1999, Pearsons et al. 2001a, Pearsons et al. 2001b, Pearsons et al. 2002, Pearsons et al. 2003). Journal articles and book chapters have also been published from our work (McMichael 1993; Martin et al. 1995; McMichael et al. 1997; McMichael and Pearsons 1998; McMichael et al. 1998; Pearsons and Fritts 1999; McMichael et al. 1999; McMichael et al. 1999; Pearsons and Hopley 1999; Ham and Pearsons 2000; Ham and Pearsons 2001; Amaral et al. 2001; McMichael and Pearsons 2001; Pearsons 2002, Fritts and Pearsons 2004, Pearsons et al. in press, Major et al. in press). This progress report summarizes data collected between January 1, 2003 and December 31, 2003. These data were compared to findings from previous years to identify general trends and make preliminary comparisons. Interactions between fish produced as part of the YKFP, termed target species or stocks, and other species or stocks (non-target taxa) may alter the population status of non-target species or stocks. This may occur through a variety of mechanisms, such as competition, predation, and interbreeding (Pearsons et al. 1994; Busack et al. 1997; Pearsons and Hopley 1999). Furthermore, the success of a supplementation program may be limited by strong ecological interactions such as predation or competition (Busack et al. 1997). Our work has adapted to new information needs as the YKFP has evolved. Initially, our work focused on interactions between anadromous steelhead and resident rainbow trout (for explanation see Pearsons et al. 1993), then interactions between spring chinook salmon and rainbow trout, and recently interactions between spring chinook salmon and highly valued non-target taxa (NTT; e.g., bull trout); and interactions between strong interactor taxa (e.g., those that may strongly influence the abundance of spring chinook salmon; e.g., smallmouth bass) and spring chinook salmon. The change in emphasis to spring chinook salmon has largely been influenced by the shift in the target species planned for supplementation (Bonneville Power Administration et al. 1996; Fast and Craig 1997). Originally, steelhead and spring chinook salmon were proposed to be supplemented simultaneously (Clune and Dauble 1991). However, due in part to the uncertainties associated with interactions between steelhead and rainbow trout, spring chinook and coho salmon were supplemented before steelhead. This redirection in the species to be supplemented has prompted us to prioritize interactions between spring chinook and rainbow trout, while beginning to investigate other ecological interactions of concern. Prefacility monitoring of variables such as rainbow trout density, distribution, and size structure was continued and monitoring of other NTT was initiated in 1997. This report is organized into three chapters that represent major topics associated with monitoring stewardship, utilization, and strong interactor taxa. Chapter 1 reports the results of non-target taxa monitoring after the fifth release of hatchery salmon smolts in the upper Yakima River basin. Chapter 2 describes our tributary sampling methodology for monitoring the status of tributary NTT. Chapter 3 describes predation on juvenile salmonids by smallmouth bass and channel catfish in the lower Yakima River. The chapters in this report are in various stages of d

Pearsons, Todd N.; Fritts, Anthony L.; Temple, Gabriel M. (Washington Department of Fish and Wildlife, Olympia, WA)

2004-05-01

130

Iron world and its astrobiological implications: The Tinto River case  

NASA Astrophysics Data System (ADS)

Extreme ecosystems have recently attracted considerable interest, not only because they prove that life is robust and adaptable, but also because their existence increases the probability of finding life elsewhere in the universe. Most of the best characterized extreme habitats on Earth correspond to geophysical constraints to which opportunistic microorganisms have adapted. However, some extreme acidic environments are unique in that they are the product of biological activity (chemolithotrophy). The Tinto River (Huelva, Southwestern Spain) is an unusual acidic ecosystem (100 km long, mean pH of 2.3) containing a high concentration of heavy metals and an unexpected level of microbial diversity (1,2). In the past, the extreme conditions of the river were considered the result of intense mining activity. The geomicrobiological analysis of the Tinto ecosystem strongly suggests that these conditions are the result of the metabolic activity of chemolithotrophic prokaryotes, mainly iron-oxidizers (3). The system seems to be controlled by iron, which is not only used as an electron donor, but also as an electron acceptor, allowing a full iron cycle to operate. Furthermore, ferric iron is responsible for the maintenance of the constant pH of the ecosystem and can protect the different organisms thriving in its waters from radiation. Laminar, iron-rich stromatolitic formations are generated by the precipitation of different iron minerals on the surface of the biofilms that cover most of the rocks in the river and the riverbed. These structures are similar to ancient massive bioinduced laminated iron bioformations formed long before the first mining activities started in the area 5000 years ago. The existence of these ancient iron-rich deposits formed prior to any known mining activity, under hydrochemical conditions similar to modern deposits, is considered a strong argument in favor of a natural origin of the river (4,5). Recently, the source area of the Tinto ecosystem has been used like an environmental scenario for new technology validation for astrobiology space missions. M.A.R.T.E. (Mars Analog Research Technology Experiment) was a multidisciplinary project for technology development in the NAI framework. REFERENCES 1.- López-Archilla, A.I., Marín, I., Amils, R. (2001) Microbial Ecol., 41: 20-35. 2.- Amaral-Zettler, L.A., Gómez, F., Zettler, E., Keenan, B.G., Amils, R., Sogin, M. (2002) Nature, 417: 137. 3.- González-Toril, E., Gómez, F., Rodríguez, N., Fernández-Remolar, D., Zuluaga, J., Marín, I., Amils, R., (2002) Hydrometall., in press. 4.- Amils, R., González-Toril, E., Gómez, F., Fernández-Remolar, D., Rodríguez, N. (2000) Spring Meeting American Geophysical Society, Abstract B22B-05. 5.- Fernández-Remolar, D.C., Rodríguez, N., Gómez, F., Amils, R. (2003) J. Geophys. Res., 108, No.E7 doi. 10.1029/2002JE001918

Gomez, F.; Amils, A.

2007-08-01

131

Searching for spiral features in the outer Galactic disk. The field towards WR38 and WR38a  

NASA Astrophysics Data System (ADS)

Context: The detailed spiral structure of the outer Galactic disk remains poorly constrained, and for several line of sights in the Galaxy we depend on model extrapolations. Aims: One of these regions is the fourth Galactic quadrant, between Vela and Carina (270° ? l ? 300°), where, apart from the conspicuous Carina branch of the Carina Sagittarius arm, no spiral arms have been detected so far in the optical beyond l ~ 270°. Methods: By means of deep UBVI photometry, we search for spiral features in known low absorption windows. Although observationally demanding, U photometry constitutes a powerful tool for detecting and characterizing distant aggregates of young stars, and allows firmer distance estimates to be derived. We study a direction close to the tangent (l ~ 290°) of the Carina arm, in an attempt to detect optical spiral tracers far beyond the Carina branch, where radio observations and model predictions appear to indicate the presence of an extension of the Perseus and Norma-Cygnus spiral arms in the fourth quadrant. Results: Along this line of sight, we detect three distinct groups of young stars. Two of them, at distances of ~2.5 and ~6.0 kpc, belong to the Carina spiral arm, which is traversed twice in this particular direction. Interestingly, the latter is detected for the first time. The third group, at a distance of ~12.7 kpc, is probably related to the Perseus arm which lies beyond the Carina arm, and constitutes the first optical detection of this arm in the fourth Galactic quadrant. The position of this feature is consistent with both HI observations and model predictions. We also present evidence that this extremely distant group, formerly assumed to be a star cluster (Shorlin 1), is a diffuse, young population, typically found in spiral galaxies. In addition, our data-set does not support, as claimed in the literature, the possible presence of the Monoceros Ring in this direction Conclusions: This study highlights how multicolor optical studies can be effective in probing the spiral structure of the outer Galactic disk. More fields need to be studied in this region of the Galaxy to constrain the spiral structure in the fourth Galactic quadrant more accurately, in particular, the shape and extent of the Perseus arm, and, possibly, to detect the even more distant Norma-Cygnus arm. Photometric catalog is only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/493/71

Carraro, G.; Costa, E.

2009-01-01

132

Management of mitral regurgitation during left ventricular reconstruction for ischemic heart failure†  

PubMed Central

OBJECTIVE Remodeling of the left ventricle (LV) in ischemic cardiomyopathy frequently leads to functional mitral regurgitation (MR). The indication for correcting MR in patients undergoing LV reconstruction (LVR) is unclear. In this study, we evaluated our strategy of correcting MR ? grade 2+ by restrictive mitral annuloplasty (RMA) during LVR. METHODS We studied 92 consecutive patients (76 men, mean age 61 ± 10 years) who underwent LVR for ischemic heart failure (IHF). RMA was performed in all patients with MR ? grade 2+ on preoperative echocardiography and in patients who showed increased MR to ?grade 2+ immediately after LVR. Patients were attributed to a RMA and no-RMA group, depending on whether or not concomitant RMA had been performed. Mean clinical and structured echocardiographic follow-up was 47 ± 20 months and was 100% complete. RESULTS In 38 out of 40 patients (95%) with preoperative MR ? grade 2+, concomitant RMA was planned and performed. In 17 out of 52 patients (33%) with MR < grade 2+ preoperatively, MR increased after LVR to ?grade 2+ leading to additional RMA during a second period of aortic cross-clamping. Early mortality in the RMA group (n = 55) was 12.7% and survival at 36 months 78.2 ± 11.2%. Early mortality in the no-RMA group (n = 37) was 5.4% and survival at 36 months 81.1 ± 12.8%. Patients in the RMA group had significantly more reduced LV function with greater LV dimensions and volumes preoperatively. Echocardiography demonstrated sustained improvement in LVEF with reduction of LV volumes in both patient groups. Recurrence of MR at late follow-up was observed in 2 patients (1 patient per group). CONCLUSIONS Patients with IHF eligible for LV reconstruction have MR ? grade 2+ in 44% of cases. In one-third of IHF patients with MR < grade 2+ preoperatively, MR increases to ?grade 2+ after LVR. Concomitant mitral valve repair for MR ? grade 2+, on either preoperative echocardiography or immediately after LVR, results in favorable late clinical and echocardiographic outcome that proved to be similar to patients without concomitant mitral valve repair, despite more advanced disease.

Klein, Patrick; Braun, Jerry; Holman, Eduard R.; Versteegh, Michel I.M.; Verwey, Harriette F.; Dion, Robert A.E.; Bax, Jeroen J.; Klautz, Robert J.M.

2012-01-01

133

[Authoritarian attitudes and violence in Madrid].  

PubMed

One of the objectives of the Multicentric Study on Cultural Norms and Attitudes Toward Violence (Estudio Multicéntrico sobre Actitudes y Normas Culturales frente a la Violencia, the ACTIVA project) is to analyze the relationship between those attitudes that foster violence and the violent behaviors themselves. This article examines the relationship between attitudes and two components of violence: its justification and its actual occurrence. Data were collected in Madrid between October and December 1996 from a representative sample of 1,219 people, who were interviewed at home with the common questionnaire used for the ACTIVA project, with some additional questions. Overall, the sample respondents scored low on the authoritarianism scale. Persons who most strongly justified the use of violence scored higher on authoritarianism, along with those who customarily displayed a higher level of aggression. Attitudes that were more strongly authoritarian were found in low-income neighborhoods, in people who were not part of the workforce, in people with less education, and in those persons who described themselves as having a right-wing ideology. If people who are more authoritarian justify and practice violence more than others, it becomes necessary to encourage criticism of those who abuse their power and tolerance toward differences, in order to prevent such behaviors without disregarding the influence of the social variables previously mentioned. PMID:10355328

Moreno Martín, F

134

Do not overlook acute isoniazid poisoning in children with status epilepticus.  

PubMed

A previously healthy 2-year-old girl was admitted with generalized convulsive status epilepticus. She was in a stupor and could respond only to painful stimuli. She also had severe metabolic acidosis. Although initial liver function tests were normal, they were found to be moderately high on the fifth day of admission; however, they dropped to their normal ranges on the twelfth day of admission. Initially, the patient was diagnosed as having idiopathic status epilepticus, and classic anticonvulsant agents, including diazepam, phenytoin, and then phenobarbital, were given. However, her seizures did not subside, and diazepam infusion was initiated. After initiation of diazepam infusion, the seizures were completely controlled. On the fourth day of admission, her parents said that she had accidentally received 20 tablets (a total dose of 2000 mg) of isoniazid just before admission to our hospital. Later, we injected 200 mg of pyridoxine intravenously. During follow-up, her general condition improved, and anticonvulsant agents were discontinued because an electroencephalogram was found to be norma. She was discharged from the hospital on the twelfth day of admission. At the fourth month of follow-up, she was seizure free. Because of this case, we would like to re-emphasize that acute isoniazid poisoning should also be considered in a child with unexplained status epilepticus. PMID:12693784

Caksen, Hüseyin; Odabas, Dursun; Erol, Mehmet; Anlar, Omer; Tuncer, Oguz; Atas, Bülent

2003-02-01

135

Detection of a Young Stellar Population in the Background of Open Clusters in the Third Galactic Quadrant  

NASA Astrophysics Data System (ADS)

We report the detection of a young stellar population (<=100 Myr) in the background of nine young open clusters belonging to a homogenous sample of 30 star clusters in the third Galactic quadrant (at 217deg<=l<=260deg). Deep and accurate UBVRI photometry allows us to measure model-independent age and distance for the clusters and the background population with high confidence. This population is exactly the same population (the blue plume) recently detected in three intermediate-age open clusters and suggested to be a <=1-2 Gyr old population belonging to the Canis Major (CMa) overdensity (Bellazzini et al.; Martínez-Delgado et al.). However, we find that the young population in those three clusters and in six clusters of our sample follows the pattern of the Norma-Cygnus spiral arm as defined by CO clouds remarkably well, while in the other three program clusters it lies in the Perseus arm. We finally provide one example (out of 21) of a cluster that does not show any background population, demonstrating that this population is not ubiquitous toward CMa.

Carraro, Giovanni; Vázquez, Ruben A.; Moitinho, André; Baume, Gustavo

2005-09-01

136

Photothermal technique in cell microscopy studies  

NASA Astrophysics Data System (ADS)

Photothermal (PT) method is applied for a cell imaging and quantitative studies. The techniques for cell monitoring, imaging and cell viability test are developed. The method and experimental set up for optical and PT-image acquisition and analysis is described. Dual- pulsed laser set up combined with phase contrast illumination of a sample provides visualization of temperature field or absorption structure of a sample with spatial resolution 0.5 micrometers . The experimental optics, hardware and software are designed using the modular principle, so the whole set up can be adjusted for various experiments: PT-response monitoring or photothermal spectroscopy studies. Sensitivity of PT-method provides the imaging of the structural elements of live (non-stained) white blood cells. The results of experiments with normal and subnormal blood cells (red blood cells, lymphocytes, neutrophyles and lymphoblasts) are reported. Obtained PT-images are different from optical analogs and deliver additional information about cell structure. The quantitative analysis of images was used for cell population comparative diagnostic. The viability test for red blood cell differentiation is described. During the study of neutrophyles in norma and sarcoidosis disease the differences in PT-images of cells were found.

Lapotko, Dmitry; Chebot'ko, Igor; Kutchinsky, Georgy; Cherenkevitch, Sergey

1995-01-01

137

NuSTAR Galactic Plane Survey Program  

NASA Astrophysics Data System (ADS)

The NuSTAR Galactic Plane Survey program consists of several deep surveys and dedicated pointing observations. The survey of a 2x0.8 degree field near Sgr A* should detect hundreds of the sources uncovered by Chandra and help identify their nature by spectroscopy and timing analysis. A similar survey of the Norma region will be performed for comparative population studies. An observation of the Limiting Window, which holds a possible new class of CVs, will yield information on their nature. With NuSTAR's superb hard X-ray sensitivity, these surveys will detect and map the low energy extension of the diffuse gamma-ray background observed by INTEGRAL. NuSTAR will observe Sgr A*, in coordination with Chandra and other observatories, to search for hard X-ray flaring, and provide an image of the central few tens of parsecs of the Galaxy with more than an order of magnitude better sensitivity than INTEGRAL. NuSTAR plans to observe the G2 molecular cloud's infall to Sgr A* in the spring of 2013. NuSTAR will spatially resolve the hard X-ray emission in the molecular cloud Sgr B2. In addition, the 2x0.8 degree field survey will observe other giant molecular clouds such as Sgr A, B1 and C to help us understand their X-ray emission possibly due to a giant flare from Sgr A* in the past.

Mori, Kaya; Barriere, N.; Bauer, F. E.; Boggs, S. E.; Craig, W.; Christensen, F.; Dufour, F.; Gotthelf, E. V.; Grindlay, J. E.; Hailey, C. J.; Harrison, F.; Helfand, D. J.; Hong, J.; Hornstrup, A.; Jakobsen, S.; Kaspi, V.; Krivonos, R.; Madsen, K.; Natalucci, L.; Perez, K.; Smith, D. M.; Stern, D.; Tomsick, J.; Zhang, S.; Zhang, W.; NuSTAR Team

2013-01-01

138

Deep Near-Infrared Survey of PKS 1343-601 and CIZA J1324.7-5736  

NASA Astrophysics Data System (ADS)

We present the results of deep near-infrared surveys around the giant radio elliptical galaxy PKS 1343-601 (36 arcmin × 36 arcmin) and of the X-ray cluster CIZA J1324.7-5736 (36 arcmin × 36 arcmin) in the Great Attractor region. They are both suggested to be unknown rich clusters related to the Great Attractor. In the PKS 1343-601 region, 19 obvious galaxies have been detected; only three of them were previously identified as a galaxy. After extinction correction, the number density of galaxies brighter than 13 mag in the Ks band is 42 galaxies deg-2, five times as high as the over all average in the GA region. However, the number of galaxies in the central 270 kpc radius is less than that of the Norma, Pavo and Centaurus clusters, the known clusters in the GA region. In the CIZA J1324.7-5736 region, we found 97 galaxies and prospective candidates, in which 35 objects are already known as galaxies in the WKK catalogue and/or the MASS Extended Source Catalogue. Our data analysis is not finished, but the subsequent study will reveal the richness of the CIZA J1324.7-5736 cluster.

Nagayama, T.; Nagata, T.; Sato, S.; Woudt, P. A.; Irsf/Sirius Team

2005-06-01

139

Enron`s battle with PECO: An inside view from outside the industry  

SciTech Connect

For all the attention focused on new laws and regulations designed to create competition in electric power markets, too few people seem to grasp how a market can work. That will change, however, now that Pennsylvania is the first large state to embrace market pricing. Pennsylvania`s lawmakers and three of its five utility commissioners have developed a market to deliver the benefits of competition to consumers. Rather than {open_quotes}guarantee{close_quotes} politically attractive rate reductions, the Pennsylvania Public Utility Commission, led by Commissioner John Hanger, has challenged market forces to deliver more savings than contemplated in any supposed guarantee. The PUC`s decision in the PECO Energy restructuring case provides a guidepost for utility commissions around the nation for dealing with electric restructuring. In the end, the PUC rejected both the Partial Settlement and the Enron plan. Commissioners John Hanger, David Rolka and Norma Mean Brownell found a way to unleash market forces that fairly balanced the goals of the incumbent utility and consumers.

Isser, S.; Mitnick, S.A. [Hagler Bailly, Arlington, VA (United States)

1998-03-01

140

[Visual deprivation affects the development of auditory sensitivity during the period of maturation of freezing response in pied flycatcher nestlings].  

PubMed

Recording of evoked potentials (EP) from the higher auditory center of birds field L of the nidopallium was used to study the development of the auditory sensitivity in normally developing vs visually deprived pied flycatcher nestlings aged 6-9 days. The visual deprivation was shown to induce a significant decrease in the absolute auditory EP thresholds in the frequency range of species-typical food call (1-3 kHz) during the period corresponding to the time of the vision involvement into the feeding behavior in the normal young (6 days post-hatching). In the frequency range of species-typical alarm call (4-5 kHz), EP thresholds in visually deprived nestlings were significantly lower than in the control birds during the period corresponding to the time of the vision involvement into the defense behavior of the latter (8-9 days post-hatching). With account made for the previous data demonstrating the decrease of efficiency of acoustic signals provoking freezing in visually-deprived nestlings, it is reasonable to suggest that defense behavior develops not just as a response to alarm call or imitating tone pips, but as a whole system, whose norma maturation and functioning requires integration of numerous factors visual afferentation being one of them. PMID:19445385

Korneeva, E V; Aleksandrov, L I; Golubeva, T B; Raevski?, V V

141

Origins of the Highly Ionized Gas along the Line of Sight toward HD 116852  

NASA Astrophysics Data System (ADS)

We present Hubble Space Telescope Imaging Spectrograph (HST/STIS) and Far Ultraviolet Spectroscopic Explorer (FUSE) observations of high ion interstellar ultraviolet absorption along the sight line to HD 116852. At a distance of 4.8 kpc, HD 116852 is an O9 III star lying in the low Galactic halo, -1.3 kpc from the plane of the Galaxy in the direction l=304.9d, b=-16.1d. The sight line passes underneath the Sagittarius-Carina and the Norma-Centaurus spiral arms. The STIS E140H grating observations provide high-resolution (FWHM~2.7kms-1) spectra of the resonance doublets of Si IV, C IV, and N V. These data are complemented by medium-resolution (FWHM~20kms-1) FUSE spectra of O VI. The integrated logarithmic column densities are logN(Si IV)=13.60+/-0.02, logN(C IV)=14.08+/-0.03, logN(N V)=13.34+0.05-0.06, and logN(O VI)=14.28+/-0.01. We find evidence for three distinct types of highly ionized gas present in the data. First, two narrow absorption components are resolved in the Si IV and C IV profiles, at approximate LSR velocities of -36 and -10 km s-1 . These narrow components appear to be produced in gas associated with the Norma and Sagittarius spiral arms, at approximate z-distances of -1.0 and -0.5 kpc, respectively. The temperature of the gas in these narrow components, as implied by their b-values, suggests that the gas is photoionized. The ratio of C IV to Si IV in these narrow components is low compared to the Galactic average. Second, we detect an intermediate-width component in C IV and Si IV, at 17 km s-1, which we propose could arise at the conductive interface at the boundary between a low column density neutral or weakly ionized cloud and the surrounding hot medium. Finally, a broad collisionally ionized component of gas responsible for producing the smooth N V and O VI profiles is observed; such absorption is also present to a lesser degree in the profiles of Si IV and C IV. The broad O VI absorption is observed at a velocity displaced from the broad C IV component by almost 20 km s-1, an amount large enough to suggest that the two ions may not coexist in the same physical location. If these two ions do exist together, then the ratio N(C IV)/N(O VI) is too low to be consistent with turbulent mixing layer models, but could be explained by radiative cooling or conductive heating models. Combining our results with high resolution observations of four other sight lines from the literature, we find an average C IV component frequency of 1.0+/-0.25kpc-1.

Fox, Andrew J.; Savage, Blair D.; Sembach, Kenneth R.; Fabian, Dirk; Richter, Philipp; Meyer, David M.; Lauroesch, James; Howk, J. Christopher

2003-01-01

142

Telephone-delivered cognitive-behavioral therapy for pain management among older military veterans: A randomized trial.  

PubMed

[Correction Notice: An Erratum for this article was reported in Vol 10(3) of Psychological Services (see record 2013-28609-001). In the article "Telephone-Delivered Cognitive-ehavioral Therapy for Pain Management Among Older Military Veterans: A Randomized Trial" by Timothy P. Carmody, Carol L. Duncan, Joy Huggins, Sharon N. Solkowitz, Sharon K. Lee, Norma Reyes, Sharon Mozgai, and Joel A. Simon (Psychological Services, Advance Online Publication, Dec 17, 2012, np), the copyright attribution was incorrect. The article is in the public domain. All versions of this article have been corrected.] This study investigated the effectiveness of telephone-delivered cognitive-behavioral therapy (T-CBT) in the management of chronic pain with older military veterans enrolled in VA primary-care clinics. We conducted a randomized clinical trial comparing T-CBT with telephone-delivered pain education (T-EDU). A total of 98 military veterans with chronic pain were enrolled in the study and randomized into one of two treatment conditions. Study participants were recruited from primary-care clinics at an urban VA medical center and affiliated VA community-based outpatient clinics (CBOCs). Pain management outcomes were measured at midtreatment (10 weeks), posttreatment (20 weeks), 3-month follow-up (32 weeks), and 6-month follow-up (46 weeks). No significant differences were found between the two treatment groups on any of the outcome measures. Both treatment groups reported small but significant increases in level of physical and mental health, and reductions in pain and depressive symptoms. Improvements in all primary outcome measures were mediated by reductions in catastrophizing. Telephone-delivered CBT and EDU warrant further study as easily accessible interventions for rural-living older individuals with chronic pain. (PsycINFO Database Record (c) 2013 APA, all rights reserved). PMID:23244028

Carmody, Timothy P; Duncan, Carol L; Huggins, Joy; Solkowitz, Sharon N; Lee, Sharon K; Reyes, Norma; Mozgai, Sharon; Simon, Joel A

2012-12-17

143

"Telephone-delivered cognitive-behavioral therapy for pain management among older military veterans: A randomized trial": Correction to Carmody et al. (2012).  

PubMed

Reports an error in "Telephone-Delivered Cognitive-Behavioral Therapy for Pain Management Among Older Military Veterans: A Randomized Trial" by Timothy P. Carmody, Carol L. Duncan, Joy Huggins, Sharon N. Solkowitz, Sharon K. Lee, Norma Reyes, Sharon Mozgai and Joel A. Simon (Psychological Services, Advanced Online Publication, Dec 17, 2012, np). The copyright attribution was incorrect. The article is in the public domain. All versions of this article have been corrected. (The following abstract of the original article appeared in record 2012-33936-001.) This study investigated the effectiveness of telephone-delivered cognitive-behavioral therapy (T-CBT) in the management of chronic pain with older military veterans enrolled in VA primary-care clinics. We conducted a randomized clinical trial comparing T-CBT with telephone-delivered pain education (T-EDU). A total of 98 military veterans with chronic pain were enrolled in the study and randomized into one of two treatment conditions. Study participants were recruited from primary-care clinics at an urban VA medical center and affiliated VA community-based outpatient clinics (CBOCs). Pain management outcomes were measured at midtreatment (10 weeks), posttreatment (20 weeks), 3-month follow-up (32 weeks), and 6-month follow-up (46 weeks). No significant differences were found between the two treatment groups on any of the outcome measures. Both treatment groups reported small but significant increases in level of physical and mental health, and reductions in pain and depressive symptoms. Improvements in all primary outcome measures were mediated by reductions in catastrophizing. Telephone-delivered CBT and EDU warrant further study as easily accessible interventions for rural-living older individuals with chronic pain. (PsycINFO Database Record (c) 2013 APA, all rights reserved). PMID:23937083

Carmody, Timothy P; Duncan, Carol L; Huggins, Joy; Solkowitz, Sharon N; Lee, Sharon K; Reyes, Norma; Mozgai, Sharon; Simon, Joel A

2013-08-01

144

From Large Scale Surveys of the Galaxy to High Resolution Observations with ALMA  

NASA Astrophysics Data System (ADS)

A CS(2-1) survey of OB star forming regions provides statistics of their distribution in the Galaxy. The complete scenario of massive star formation for one particular GMC, at a distance of 1.6 kpc, is revealed through 1.2 mm continuum observations for spatial scales from 1 pc to 50 pc. Using large scale CO and C18O maps from NANTEN at 2.5' resolution, we identified toward the peak of C18O one of the most luminous regions of high-mass star formation in the Galaxy, G331.5, toward the tangent of Norma spiral arm, at a distance of 7.5 kpc. Observations at 1.2 mm continuum emission with SIMBA at SEST reveal the presence of a cluster of six massive millimeter clumps, with high bolometric luminosity, making G331.5 one of the most densely populated GMC cores known so far. High density molecular tracers reveal the presence, in the center of the most massive clump, of a compact, highly massive and energetic molecular outflow, with a velocity width reaching 160 km s-1 (fwzp). Further interferometric continuum observations at 3.6 cm and 6 cm shows that this powerful outflow is associated with a compact radio continuum source, likely producing highly ionized stellar wind. ALMA observations were carried in band 7 to this unresolved molecular outflow. SiO and H13CO+ observations unveil a shell-like structure toward the ambient velocity of the source, evidence of an isotropic high speed wind. The derived crossing time for this source indicates that the molecular outflow in G331.5 is one of the youngest outflow found around an OB star.

Bronfman, L.; Merello, M.

2013-10-01

145

Three-dimensional Velocity and Density Reconstructions of the Local Universe with Cosmicflows-1  

NASA Astrophysics Data System (ADS)

This paper presents an analysis of the local peculiar velocity field based on the Wiener Filter (WF) reconstruction method. We used our currently available catalog of distance measurements containing 1797 galaxies within 3000 km s-1: Cosmicflows-1. The WF method is used to recover the full three-dimensional peculiar velocity field from the observed map of radial velocities and to recover the underlying linear density field. The velocity field within a data zone of 3000 km s-1 is decomposed into a local component that is generated within the data zone and a tidal one that is generated by the mass distribution outside that zone. The tidal component is characterized by a coherent flow toward the Norma-Hydra-Centaurus (Great Attractor) region, while the local component is dominated by a flow toward the Virgo Cluster and away from the Local Void. A detailed analysis shows that the local flow is predominantly governed by the Local Void and the Virgo Cluster plays a lesser role. The analysis procedure was tested against a mock catalog. It is demonstrated that the WF accurately recovers the input velocity field of the mock catalog on the scale of the extraction of distances and reasonably recovers the velocity field on significantly larger scales. The Bayesian WF reconstruction is carried out within the ?CDM WMAP5 framework. The WF reconstruction draws particular attention to the importance of voids in proximity to our neighborhood. The prominent structure of the Local Supercluster is wrapped in a horseshoe collar of under density with the Local Void as a major component.

Courtois, Hélène M.; Hoffman, Yehuda; Tully, R. Brent; Gottlöber, Stefan

2012-01-01

146

Stellar populations in the Canis Major overdensity  

NASA Astrophysics Data System (ADS)

We performed a photometric multicolour survey of the core of the Canis Major overdensity at , reaching V ~ 22 and covering 0.3 × 1.0 arcmin2. The main aim is to unravel the complex mixture of stellar populations toward this Galactic direction, where in the recent past important signatures of an accretion event have been claimed to be detected. While our previous investigations were based on disjointed pointings aimed at revealing the large-scale structure of the third Galactic Quadrant, we now focus on a complete coverage of a smaller field centred on the Canis Major overdensity. A large wavelength baseline, in the UBVRI bands, allows us to build up a suite of colour-colour and colour-magnitude diagrams, providing a much better diagnostic tool to disentangle the stellar populations of the region. In fact, the simple use of one colour-magnitude diagram, widely employed in all the previous studies defending the existence of the Canis Major galaxy, does not allow one to separate the effects of the different parameters (reddening, age, metallicity and distance) involved in the interpretation of data, forcing to rely on heavy modelling. In agreement with our previous studies, in the same general region of the Milky Way, we recognize a young stellar population compatible with the expected structure and extension of the Local (Orion) and Outer (Norma-Cygnus) spiral arms in the Third Galactic Quadrant. Moreover, we interpret the conspicuous intermediate-age metal-poor population as belonging to the Galactic thick disc, distorted by the effect of strong disc warping at this latitude, and to the Galactic halo.

Carraro, Giovanni; Moitinho, André; Vázquez, Ruben A.

2008-04-01

147

THREE-DIMENSIONAL VELOCITY AND DENSITY RECONSTRUCTIONS OF THE LOCAL UNIVERSE WITH COSMICFLOWS-1  

SciTech Connect

This paper presents an analysis of the local peculiar velocity field based on the Wiener Filter (WF) reconstruction method. We used our currently available catalog of distance measurements containing 1797 galaxies within 3000 km s{sup -1}: Cosmicflows-1. The WF method is used to recover the full three-dimensional peculiar velocity field from the observed map of radial velocities and to recover the underlying linear density field. The velocity field within a data zone of 3000 km s{sup -1} is decomposed into a local component that is generated within the data zone and a tidal one that is generated by the mass distribution outside that zone. The tidal component is characterized by a coherent flow toward the Norma-Hydra-Centaurus (Great Attractor) region, while the local component is dominated by a flow toward the Virgo Cluster and away from the Local Void. A detailed analysis shows that the local flow is predominantly governed by the Local Void and the Virgo Cluster plays a lesser role. The analysis procedure was tested against a mock catalog. It is demonstrated that the WF accurately recovers the input velocity field of the mock catalog on the scale of the extraction of distances and reasonably recovers the velocity field on significantly larger scales. The Bayesian WF reconstruction is carried out within the {Lambda}CDM WMAP5 framework. The WF reconstruction draws particular attention to the importance of voids in proximity to our neighborhood. The prominent structure of the Local Supercluster is wrapped in a horseshoe collar of under density with the Local Void as a major component.

Courtois, Helene M.; Tully, R. Brent [Institute for Astronomy (IFA), University of Hawaii, 2680 Woodlawn Drive, HI 96822 (United States); Hoffman, Yehuda [Racah Institute of Physics, Hebrew University, Jerusalem 91904 (Israel); Gottloeber, Stefan, E-mail: courtois@ifa.hawaii.edu [Leibniz-Institut fuer Astrophysik Potsdam (AIP), An der Sternwarte 16, 14482 Potsdam (Germany)

2012-01-01

148

Rings and ladders in biology - fast ab initio simulations of polypeptides and DNA.  

NASA Astrophysics Data System (ADS)

Throughout the years, developments of first principles methods have allowed a theoretical investigation of a wide variety of materials from semiconductors to zeolites. However, ab initio methods have not been widespread in the area of large biological systems. Several recent advances in theoretical techniques have prompted us to examine the possibility of simulating large biological systems. Linear scaling methods have been developed to avoid the N^3 computational roadblock due to matrix diagonalization, and a hydrogen-bonding model has been developed to correctly model weak intermolecular interactions within a tight-binding like local orbital framework.(J. Ortega, J. P. Lewis, O. F. Sankey Phys. Rev. B. 50), 10516 (1994); J. P. Lewis and O. F. Sankey, Biophys. J. 69, 1068 (1995). With these developments, a simulation of a dehydrated 10 basepair poly(dG) -- poly(dC) segment of DNA will be described. Results for the electronic structure of this relaxed structure will be discussed. In addition, a simulation of this relaxed structure, involving 1932 steps, was performed to determine the dynamical matrix. The corresponding vibrational spectrum was found and trends will be compared with experimental work.(Work done in collaboration with Otto F. Sankey and Pablo Ordejón) In addition, theoretical results on the energetics, electronic, vibrational and elastic properties of cyclic peptide systems cyclo[(D-Ala-Glu-D-Ala-Gln)_m], where m=1-4, will be presented. Experimentally, these cyclic peptide nanotubes have been shown to be excellent for transporting of ions and glucose across membranes, the attempt to simulate the placement of a dopant into the nanotube structure and the effects on the electronic structure will be discussed.(Work done in collaboration with Otto F. Sankey and Norma H. Pawley)

Lewis, James P.

1996-03-01

149

Spirituality and Cultural Identification Among Latino and Non-Latino College Students  

PubMed Central

The purposes of this study were to examine (a) differences in spiritual perspectives and practices of Latino and non-Latino young adults and (b) the cultural relevance of the Latino Spiritual Perspective Scale (LSPS). Studies indicate that spiritual perspectives are embedded within cultural group norms and vary significantly across ethnic groups. A cross-sectional survey design was used with a convenience sample of 223 Latino and non-Latino university students in the Southwestern United States. The Spiritual Perspective Scale (SPS), the LSPS, the Orthogonal Cultural Identification Scale, and a demographic questionnaire were used. Latinos scored significantly higher than non-Latinos in both measures of spiritual perspectives. Self-reported behavioral measures, such as frequency of personal prayer, were also higher among the Latino group. Latino cultural identification was the only significant predictor of LSPS scores. Findings from this study indicate that spirituality among Latinos has meanings specific to the cultural group context. These findings have implications for nursing research involving the conceptualization and measurement of spirituality among multiethnic groups. Los propósitos de este estudio eran examinar: (a) diferencias en perspectivas espirituales y prácticas de jóvenes Latinos y no Latinos; y (b) la relevancia cultural de la Escala de la Perspectiva Espiritual Latina. Estudios indican que perspectivas espirituales están incrustadas entre normas culturales del grupo y varían considerablemente entre grupos étnicos. Un diseño transversal y de encuesta fue utilizado con una muestra de conveniencia de 233 estudiantes universitarios Latinos y no Latinos en el Suroeste de los Estados Unidos. La Escala de la Perspectiva Espiritual (EPE), la Escala de la Perspectiva Espiritual Latina (EPEL), la Escala Ortogonal de Identificación Cultural, y un cuestionario demográfico fueron utilizados. Los Latinos calificaron considerablemente más alto que los no Latinos en ambas medidas de perspectivas espirituales. Medidas de comportamiento auto-reportadas, como la frecuencia de oración, también estuvieron más altas en el grupo Latino. La identificación con la cultura Latina fue el único vaticinador de las calificaciones de la EPEL. Los resultados de este estudio indican que la espiritualidad entre Latinos tiene significados específicos al contexto del grupo cultural. Estas conclusiones tienen implicaciones para las investigaciones de enfermería que involucran la conceptualización y medida de la espiritualidad entre grupos multiétnicos.

Campesino, Maureen; Belyea, Michael; Schwartz, Gary

2010-01-01

150

NuSTAR Galactic Plane Survey and Galactic Binaries Program  

NASA Astrophysics Data System (ADS)

The NuSTAR Galactic science program includes a Galactic plane survey and observations of specific Galactic binaries. The survey includes a 2x0.8 degree field near Sgr A*, in which Chandra uncovered a large population of unidentified sources, possibly CVs. NuSTAR should detect hundreds of these sources in the hard X-ray band, helping identify their nature. A similar survey of the Norma region will be done for comparative studies. NuSTAR will observe Sgr A*, in coordination with Chandra and other observatories, to search for hard X-ray flaring. The same observations will provide an image of the central few tens of parsecs of the Galaxy with more than an order of magnitude better sensitivity than INTEGRAL. NuSTAR will spatially resolve the hard X-ray emission in the molecular cloud Sgr B2 to better understand its origin. An observation of the Limiting Window, which holds a possible new class of CVs, will yield information on their nature through the fraction of hard X-ray emitters. NuSTAR’s planned observation of the G2 molecular cloud - Sgr A* infall in the spring of 2013 will be discussed. Finally, with its superb hard X-ray sensitivity, NuSTAR will detect and map the low energy extension of the diffuse gamma-ray background observed by INTEGRAL, helping to resolve the long-standing mystery of the diffuse Galactic X-ray background. For Galactic binaries, NuSTAR's hard X-ray sensitivity will permit detailed studies of the fainter part of this population. NuSTAR will obtain the first hard X-ray measurements of black hole and neutron star transients in and approaching quiescence, providing new insights into how the X-ray emission is produced. NuSTAR will follow up on recently discovered types of High-Mass X-ray Binaries to search for pulsations, cyclotron lines, or spectral breaks, constraining the properties of their compact objects. We also plan to target gamma-ray binaries to understand whether the emission is powered by accretion or neutron star rotation. For bright X-ray binaries, we will use NuSTAR’s superb energy resolution at >10 keV to study cyclotron lines from accreting pulsars and to search for absorption edges in type I X-ray bursts that, if found, provide a new window on neutron star physics.

Hailey, Charles J.; NuSTAR Science Team

2013-01-01

151

? -rays from annihilating dark matter in galaxy clusters: stacking versus single source analysis  

NASA Astrophysics Data System (ADS)

Clusters of galaxies are potentially important targets for indirect searches for dark matter (DM) annihilation. Here we reassess the detection prospects for annihilation in massive haloes, based on a statistical investigation of 1743 clusters in the new Meta-Catalogue of X-ray Clusters (MCXC). We derive a new limit for the extragalactic DM annihilation background of at least 20 per cent of that originating from the Galaxy for an integration angle of 0°.1. The number of clusters scales as a power law with their brightness (boosted by DM substructures), suggesting that stacking may provide a significant improvement over a single target analysis. The mean angle containing 80 per cent of the DM signal for the sample (assuming a Navarro-Frenk-White DM profile) is ˜0°.15 (excluding the contribution from the point spread function of any instrument), indicating that instruments with this angular resolution or better would be optimal for a cluster annihilation search based on stacking. A detailed study based on the Fermi-LAT performance and position-dependent background suggests that stacking may result in a factor of ˜2 improvement in sensitivity, depending on the source selection criteria. Based on the expected performance of Cherenkov Telescope Array, we find no improvement with stacking, due to the requirement for pointed observations. We note that several potentially important targets - Opiuchius, A2199, A3627 (Norma) and CIZA J1324.7-5736 - may be disfavoured due to a poor contrast with respect to the Galactic DM signal. The use of the homogenized MCXC meta-catalogue provides a robust ranking of the targets, although the absolute value of their signal depends on the exact DM substructure content. For conservative assumptions, we find that galaxy clusters (with or without stacking) can probe down to 10-25-10-24 cm3 s-1 for DM masses in the range 10-100 GeV. For more favourable substructure configurations, ˜ 10-26 cm3 s-1 may be reached.

Nezri, E.; White, R.; Combet, C.; Hinton, J. A.; Maurin, D.; Pointecouteau, E.

2012-09-01

152

Thermalization of Interstellar CO  

NASA Astrophysics Data System (ADS)

Unlike radio emission of CO, infrared absorption of CO give column densities in each rotational level directly when weak transitions like overtone bands or ^{13}CO or C^{18}O isotope bands are used. This allows more straightforward determination of temperature (T) and density (n) of the environment than the large velocity gradient (LVG) model used to determine them from antenna temperatures of radio emission. In order to facilitate such determination, we have solved the steady state linear simultaneous equations for thermalization of CO and calculated population ratios of rotational levels as a function of T and n as we did for H_3^+. We thus get two-dimensional graph of column density ratios, for example, N(J=1)/N(J=0) and N(J=2)/N(J=0) as a function of T and n or variation of it when other population ratios are used. As for H_3^+ we can invert the graph to obtain graphs of T versus n as functions of population ratios which is more convenient to apply to observed data. We use rate constants of collision-induced transitions between CO and ortho- and para-H_2 theoretically calculated by Fowler and Wernli et al. which have been compiled and extended by Schöier et al. As the first approximation, only spontaneous emissions are considered and other radiative effects such as induced emission and absorption are ignored. The results are applied to CO column densities observed toward the Galactic center, that is, CO in the three spiral arms, 3-kpc (Norma), 4.5-kpc (Scutum), and local arms (Sagittarius), and in the Central Molecular Zone. T. Oka and E. Epp, ApJ, 613, 349 (2004) M. Goto, Usuda, Nagata, Geballe, McCall, Indriolo, Suto, Henning, Morong, and Oka, ApJ, 688, 306 (2008) D. R. Fowler, J. Phys. B: At. Mol. Opt. Phys. 34, 2731 (2001) M. Wernli, P. Valiron, A. Faure, L. Wiesenfeld, P. Jankowski, and K. Szalewicz, A & A, 446, 367 (2006) F. L. Schöier, F. F. S. van der Tak, E. F. van Dishoeck, and J. H. Black, A & A, 432, 369 (2005)

Oka, Takeshi; Xiao, Han; Lynch, Phillip

2009-06-01

153

Prospects of detecting gamma-ray emission from galaxy clusters: Cosmic rays and dark matter annihilations  

NASA Astrophysics Data System (ADS)

We study the possibility for detecting gamma-ray emission from galaxy clusters. We consider (1) leptophilic models of dark matter (DM) annihilation that include a Sommerfeld enhancement (SFE), (2) different representative benchmark models of supersymmetric DM, and (3) cosmic-ray (CR) induced pion decay. Among all clusters/groups of a flux-limited x-ray sample, we predict Virgo, Fornax, and M49 to be the brightest DM sources and find a particularly low CR-induced background for Fornax. For a minimum substructure mass given by the DM free-streaming scale, cluster halos maximize the substructure boost for which we find a factor of ?1000. Since regions around the virial radius dominate the annihilation flux of substructures, the resulting surface brightness profiles are almost flat. This makes it very challenging to detect this flux with imaging atmospheric Cherenkov telescopes since their sensitivity drops approximately linearly with radius and they typically have 5-10 linear resolution elements across a cluster. Assuming cold dark matter with a substructure mass distribution down to an Earth mass and using extended Fermi upper limits, we rule out the leptophilic models in their present form in 28 clusters, and limit the boost from SFE in M49 and Fornax to be ?5. This corresponds to a limit on SFE in the Milky Way of ?3, which is too small to account for the increasing positron fraction with energy as seen by PAMELA and challenges the DM interpretation. Alternatively, if SFE is realized in nature, this would imply a limiting substructure mass of Mlim?>104M?—a problem for structure formation in most particle physics models. Using individual cluster observations, it will be challenging for Fermi to constrain our selection of DM benchmark models without SFE. The Fermi upper limits are, however, closing in on our predictions for the CR flux using an analytic model based on cosmological hydrodynamical cluster simulations. We limit the CR-to-thermal pressure in nearby bright galaxy clusters of the Fermi sample to ?10% and in Norma and Coma to ?3%. Thus, we will soon start to constrain the underlying CR physics such as shock acceleration efficiencies or CR transport properties.

Pinzke, Anders; Pfrommer, Christoph; Bergström, Lars

2011-12-01

154

PREFACE: The XI Mexican School on Particles and Fields  

NASA Astrophysics Data System (ADS)

The XI Mexican School on Particles and Fields took place on 2-13 August 2004, in the city of Xalapa, Veracruz, México. The School continued with the tradition of promoting High Energy Physics among the younger generation in Mexico. Thus, it was aimed specifically at graduate students and postdocs. The School consisted of several courses delivered by international experts on subjects of current interest to the scientific community. The length of each course was of six to eight hours, English being the language of instruction. A novelty in this edition of the School was its total duration (two weeks as opposed to one), the number of hours assigned to one subject, and the addition of some experimental courses for the students to overcome their inhibitions of a direct encounter with the equipment and its usage. There were also a few overview talks delivered by local experts on the current status of some of the research fields actively pursued in Mexico. The XI-MSPF was organized by the Particles and Fields Division of the Mexican Physical Society. It was generously sponsored by several institutions: Universidad de Veracruz, Universidad Nacional Autónoma de México, Universidad Michoacana de San Nicolás de Hidalgo, Centro de Investigaciones y Estudios Avanzados del IPN (CINVESTAV) and Consejo Nacional de Ciencia y Tecnología (CONACyT). We are very grateful to Dr Raúl Arias Lovillo, Dr Víctor Manuel Alcaráz Romero, Dr Asdrúbal Flóres López and Mtro Walter Saiz González, head of the Academic Secretariat, Director and Subdirector of the Office of Scientific Research and Director of the Division of Exact Sciences of the University of Veracruz, respectively, for their invaluable support in all senses to our Summer School. We also appreciate the important and useful assistance provided by Dr Rubén Bernardo Morante López, Director of the Museum of Anthropology of Xalapa, and Dr Héctor Coronel Brizio of the Secretariat of Education and Culture of the state of Veracruz. We acknowledge the help of our colleagues in the Organizing Committee: Norma Bagatella Flores (FFIA-U. Veracruzana), Heriberto Castilla Valdés (CINVESTAV-U. Zacatenco), Lorenzo Díz Cruz (FCFM-BUAP), Juan José Godina Nava (CINVESTAV-U. Zacatenco), Gerardo Herrera Corral (CINVESTAV-U. Zacatenco), German Mandujano Vallejo (FFIA-U. Veracruzana), Miguel Ángel Pérez Angón (CINVESTAV-U. Zacatenco), Efraín Rojas Marcial (FFIA-U. Veracruzana) and Carlos Vargas Madrazo (FFIA-U Veracruzana). Many thanks also to our Conference Secretaries Patricia Carranza and Soledad López for the efficiency with which they carried out their job and their dedication. Special thanks go to María Guadalupe Colorado Hernández and Javier Ignacio Fragoso Tizapan, whose help in carrying out the School was essential, without their collaboration this School would not have been the same. We take this opportunity to thank most warmly all the speakers for delivering excellent lectures which made this event a success. Moreover, to our utmost delight, the students participated very enthusiastically and we hope that this school will contribute considerably towards their academic development. The future of scientific endeavour always depends upon the students. Adnan Bashir (IFM-UMSNH) Jens Erler (IF-UNAM) Rául Hernández (FFIA-UV) Myriam Mondragón (IF-UNAM) Luis Villaseñor (IFM-UMSNH)

2005-01-01

155

The gamma-ray pulsar PSR1706-44 and its associated SNR  

NASA Astrophysics Data System (ADS)

The Molonglo Observatory Synthesis Telescope discovered a faint supernova remnant associated with PSR 1706-44, one of only four gamma-ray pulsars. (Vela, the Crab and PSR 1509-58 also have an associated SNR.) The gamma-ray source was first discovered as 2CG342-02, the tenth strongest of 25 COS-B gamma-ray sources cataloged (Swanenburg et al., 1981, Astrophys. J. Lett. 243, L69). Low-resolution surveys show an extended (approximately 40 min x 25 min) source in the region with flux of approximately 25 Jy, suggesting a plerionic SNR (e.g. Jonas, de Jager and Baart, 1985, Astron. Astrophys. Suppl., 62, 105). A search for the gamma-ray source at 843 MHz with a resolution of 44 arcsec revealed a shell-type SNR--a half-ellipse with axes approximately 44 min x 32 min and low brightness of approximately 9 mJy per beam, giving Sigma843 = 3 x 10-21W m-2 Hz/sr (McAdam, Osborne and Parkinson, 1993, Nature, 361, 516). The Sigma-D relation suggests a diameter D approximately 34 pc at a distance of approximately 3 kpc in the Norma spiral arm of the Galaxy. It has a young (Sedov expansion) age of approximately 6000 years. The key linking the SNR and the gamma-ray source came (Kniffen et al., 1992, IAU Circ. 5485) when the Energetic Gamma Ray Experiment Telescope (EGRET) on the Compton Gamma Ray Observatory satellite detected pulsed gamma-radiation (Thompson et al., 1992, Nature, 359, 615) from the newly-discovered PSR 1706-44 (Johnston et al., 1992, Mon. Not. R. Astron. Soc. 255, 401). The pulsar position (epoch 1950) at RA = 17 hour 06 min 05.1 sec, delta = -44 deg 25 min 15.0 sec coincides in the MOST image with a 21 mJy source on the SE and of the SNR shell. The pulsar has a period of 102 ms and slows with characteristic age 17300 years. For it to move 18 min from centre to rim of the SNR shell in this time implies a proper motion of 0.06 sec/yr which is sufficiently large to check with VLBI astrometry. At the pusar dispersion distance (1.8 kpc), or the SNR distance of 3 kpc, the pulsar has apparently moved 10 or 16 pc at a transverse velocity of 540 or 900 km/s.

McAdam, Bruce

1994-04-01

156

Effects of drug-carrier interactions on drug dissolution from binary and ternary matrices  

NASA Astrophysics Data System (ADS)

For nearly five decades, pharmaceutical researchers have studied solid solutions of drugs in polymers as a potential means to enhance the dissolution of drugs with poor aqueous solubility. This has become of greater importance in recent years because most new potential drug compounds (new chemical entities) exhibit poor water solubility and present great challenges to scientists who must design dosage forms from which the drugs are bioavailable. During the formulation of a solid solution, the drug undergoes physical but not chemical alterations that increase its chemical potential in the formulation relative to that of the pure drug in its stable form. This increased chemical potential is responsible for enhanced dissolution as well as physical instabilities, such as amorphous to crystalline conversions and precipitation within the solid state. The chemical potential is derived from the Gibbs free energy, so it is reasonable to explain the behavior of solid solution systems in terms of thermodynamics. Solid solutions and dispersions have been extensively studied by pharmaceutical scientists, both with regard to manufacturing aspects and the proposal of various models in attempts to explain the physical bases for how these systems work. Recently, Dave and Bellantone proposed a model based on the thermodynamic changes resulting from the formulation of binary solid solutions of a drug in the polymer PVP. Their model introduced a modification of the F-H theory, which was used to quantify the drug-polymer interaction energies and calculate the entropy of mixing of the drug and polymer. In this work, the model of Dave and Bellantone was extended to include three-component systems, consisting of one drug mixed in a carrier matrix consisting of mixture of two polymers or a polymer and a surfactant. For this research, solid solutions were formed using various drug weight fractions in the formulations. The study focused on the following points: (1) Prepare solid solution formulations and perform appropriate physical characterizations. (2) Characterize the increase in drug dissolution rates resulting from solid solution formulations. (3) Relate the initial dissolution rates to the drug solubility. (4) Explain the solubility enhancement from solid solution dosage in terms of the drug polymer interactions using the extended thermodynamic model. Two poorly water soluble drugs, levonorgestrel (LEVO) and ethinyl estradiol (EE) were formulated in seven solid solution preparations comprised of four carrier systems. Materials used as carriers included various combinations of the polymers PVP K-30, Copovidone (COP), Poloxamer 182, and the surfactant TweenRTM 20. Additionally, ibuprofen (IBU) was used in three formulations consisting of various combinations of PVP K-30, Copovidone and TweenRTM 20. Formulations with various drug weight fractions (0.5%--30%) were prepared using the solvent evaporation technique. Each formulation was tested for dissolution using intrinsic dissolution apparatus (USP). The solid solutions were compressed into tablets into the sample die that maintained a constant surface area during the dissolution process. DSC, XRD and NIRS scans identified that the crystalline peaks of the drug disappeared with the addition of the polymer for all ratios of EE, indicating the formation of solid solutions (to within the limits of detection of the equipment). This was also observed for the LEVO dispersions up to 10% drug loading. At higher drug loading, solutions were formed but some small degree crystallinity was also present. For each experiment, the initial dissolution rates were obtained from the slope of the mass dissolved vs. time plots taken at early times, and volume normalized initial dissolution rates RV were calculated by dividing the initial dissolution rate by the volume fraction of the drug in the formulation. Comparison of the RV values for the various formulations with a reference RV (typically that of the pure drug or of the formulation with the highest polymer content) allowed calculation of relative volume norma

Iqbal, Zafar

157

Properties of Waste from Coal Gasification in Entrained Flow Reactors in the Aspect of Their Use in Mining Technology / W?a?ciwo?ci odpadów ze zgazowania w?gla w reaktorach dyspersyjnych w aspekcie ich wykorzystania w technologiach górniczych  

NASA Astrophysics Data System (ADS)

Most of the coal gasification plants based of one of the three main types of reactors: fixed bed, fluidized bed or entrained flow. In recent years, the last ones, which works as "slagging" reactors (due to the form of generated waste), are very popular among commercial installations. The article discusses the characteristics of the waste from coal gasification in entrained flow reactors, obtained from three foreign installations. The studies was conducted in terms of the possibilities of use these wastes in mining technologies, characteristic for Polish underground coal mines. The results were compared with the requirements of Polish Standards for the materials used in hydraulic backfill as well as suspension technology: solidification backfill and mixtures for gob caulking. Wi?kszo?? przemys?owych instalacji zgazowania w?gla pracuje w oparciu o jeden z trzech g?ównych typów reaktorów: ze z?o?em sta?ym, dyspersyjny lub fluidalny. W zale?no?ci od rodzaju reaktora oraz szczegó?owych rozwi?za? instalacji, powstaj?ce uboczne produkty zgazowania mog? mie? ró?n? posta?. Zale?y ona w du?ej mierze od stosunku temperatury pracy reaktora do temperatury topnienia cz??ci mineralnych zawartych w paliwie, czyli do temperatury mi?knienia i topnienia popio?u. W ostatnich latach bardzo du?? popularno?? w?ród instalacji komercyjnych zdobywaj? reaktory dyspersyjne "?u?luj?ce". W takich instalacjach ?u?el jest wychwytywany i studzony po wyp?yni?ciu z reaktora. W niektórych przypadkach oprócz ?u?la powstaje jeszcze popió? lotny, wychwytywany w systemach odprowadzania spalin. Mo?e by? on pozyskiwany oddzielnie lub te? zawracany do komory reaktora, gdzie ulega stopieniu. Wszystkie z analizowanych odpadów - trzy ?u?le oraz popió? pochodz? w?a?nie z tego typu instalacji. Tylko z jednej z nich pozyskano zarówno ?u?el jak i popió?, z pozosta?ych dwóch jedynie ?u?el. Odpady te powsta?y, jako uboczny produkt zgazowania w?gla lub w?gla z dodatkami: bitumin (?u?el S1), czy biomasy (popió? A2, ?u?el S2). W polskim górnictwie podziemnym wyró?ni? mo?na kilka technologii podsadzkowych, w których do transportu materia?u wykorzystywana jest woda. Tradycyjnie oraz ze wzgl?dów historycznych, terminem "podsadzka hydrauliczna" okre?la si? t?, która spe?nia wymagania normy PN-93/G-11010. Do najwa?niejszych cech takiej podsadzki hydraulicznej zaliczy? nale?y wype?nienia uprzednio wydzielonej pustki poeksploatacyjnej, materia?em o jak najmniejszej ?ci?liwo?ci oraz o jak najwi?kszej wodoprzepuszczalno?ci. Materia? taki, po odprowadzeniu wody ma stanowi? mechaniczna podpor? stropu, a proces podsadzania jest ?ci?le powi?zany z procesem eksploatacji, jako sposób likwidacji zrobów. Najcz??ciej stosowanymi materia?ami s? piasek podsadzkowy oraz odpady górnicze lub hutnicze (Lisowski, 1997). Od ponad dwudziestu lat, w polskim górnictwie w?gla kamiennego obecna jest równie? inna technologia podsadzkowa, w której do transportu materia?ów wykorzystywana jest woda. W tym przypadku cz??ci sta?e to materia?y drobnoziarniste, najcz??ciej popio?y ró?nych typów, które po wymieszaniu z wod? tworz? zawiesin? (st?d termin "zawiesiny popio?owo-wodne"). Polska norma PN-G-11011:1998 wyró?nia dwie odmiany takich zawiesin i definiuje je, jako "podsadzk? zestalan?" oraz "mieszanin? do doszczelniania zrobów". Podstawow? ide? przy?wiecaj?c? stosowaniu zawiesin drobnoziarnistych w technologiach górniczych by?a pocz?tkowo troska o zagospodarowaniu odpadów energetycznych, a nast?pnie górniczych (Mazurkiewicz i in., 1998; Piotrowski i in., 2006; Piotrowski, 2010; Plewa i Mys?ek, 2000; Plewa i Sobota, 2002). Obecnie technologia zawiesinowa na sta?e zago?ci?a w kopalniach w?gla kamiennego staj?c si? m.in. nieodzownym ?rodkiem profilaktyki po?arowej i metanowej (Dziurzy?ski i Pomyka?a, 2006; Palarski, 2004; Pomyka?a, 2006). W artykule przedstawiono analiz? mo?liwo?ci wy

Pomyka?a, Rados?aw

2013-06-01