WorldWideScience
 
 
1

Relations de dispersion pour cha\\^ines lin\\'eaires comportant des interactions harmoniques auto-similaires  

CERN Document Server

Many systems in nature have arborescent and bifurcated structures such as trees, fern, snails, lungs, the blood vessel system, etc. and look self-similar over a wide range of scales. Which are the mechanical and dynamic properties that evolution has optimized by choosing self-similarity? How can we describe the mechanics of self-similar structures in the static and dynamic framework? Physical systems with self-similarity as a symmetry property require the introduction of non-local particle-particle interactions and a (quasi-) continuous distribution of mass. We construct self-similar functions and linear operators such as a self-similar variant of the Laplacian and of the D'Alembertian wave operator. The obtained self-similar linear wave equation describes the dynamics of a quasi-continuous linear chain of infinite length with a spatially self-similar distribution of nonlocal inter-particle springs. The self-similarity of the nonlocal harmonic particle-particle interactions results in a dispersion relation of...

Michelitsch, Thomas M; Nicolleau, Franck C G A; Nowakowski, Andrzej F; Derogar, Shahram

2009-01-01

2

Fine-Scale Delineation of the Location of and Relative Ground Shaking within the San Andreas Fault Zone at San Andreas Lake, San Mateo County, California.  

Science.gov (United States)

The San Francisco Public Utilities Commission is seismically retrofitting the water delivery system at San Andreas Lake, San Mateo County, California, where the reservoir intake system crosses the San Andreas Fault (SAF). The near-surface fault location a...

2013-01-01

3

AIDS-related disseminated histoplasmosis in San Francisco, California.  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The published reports of patients with the acquired immunodeficiency syndrome (AIDS) with disseminated histoplasmosis come mostly from institutions located in endemic areas for histoplasmosis, where disease is thought to occur by either primary infection or reactivation. The characteristics of reactivation disease are not well delineated. We describe the clinical features of reactivation disseminated histoplasmosis in 46 residents of San Francisco, California, with AIDS who did not report rec...

1997-01-01

4

The risk of low doses of ionising radiation and the linear no threshold relationship debate; La controverse sur les effets des faibles doses de rayonnements ionisants et la relation lineaire sans seuil  

Energy Technology Data Exchange (ETDEWEB)

The ICRP and the B.E.I.R. VII reports recommend a linear no threshold (L.N.T.) relationship for the estimation of cancer excess risk induced by ionising radiations (IR), but the 2005 report of Medicine and Science French Academies concludes that it leads to overestimate of risk for low and very low doses. The bases of L.N.T. are challenged by recent biological and animal experimental studies which show that the defence against IR involves the cell microenvironment and the immunologic system. The defence mechanisms against low doses are different and comparatively more effective than for high doses. Cell death is predominant against low doses. DNA repairing is activated against high doses, in order to preserve tissue functions. These mechanisms provide for multicellular organisms an effective and low cost defence system. The differences between low and high doses defence mechanisms are obvious for alpha emitters which show several greys threshold effects. These differences result in an impairment of epidemiological studies which, for statistical power purpose, amalgamate high and low doses exposure data, since it would imply that cancer IR induction and defence mechanisms are similar in both cases. Low IR dose risk estimates should rely on specific epidemiological studies restricted to low dose exposures and taking precisely into account potential confounding factors. The preliminary synthesis of cohort studies for which low dose data (< 100 mSv) were available show no significant risk excess, neither for solid cancer nor for leukemias. (authors)

Tubiana, M. [Centre Antoine Beclere, Faculte de Medecine, 75 - Paris (France); Masse, R. [11 rue du Haras, Residence Le Boqueteau, Acacias 2, 91 - Saint-Michel-sur-Orge (France); Vathaire, F. de [Institut Gustave Roussy, INSERM U 605., 94 - Villejuif (France); Averbeck, D. [Institut Curie, Section de Recherche, Lab. Raymond Latarjet, UMR2027 du CNRS, Centre Universitaire d' Orsay, 91 - Orsay (France); Aurengo, A. [Hopital Pitie-Salpetriere, Service Medecine Nucleaire, 75 - Paris (France)

2007-04-15

5

The accommodation of relative motion at depth on the San Andreas fault system in California  

Science.gov (United States)

Plate motion below the seismogenic layer along the San Andreas fault system in California is assumed to form by aseismic slip along a deeper extension of the fault or may result from lateral distribution of deformation below the seismogenic layer. The shallow depth of California earthquakes, the depth of the coseismic slip during the 1906 San Francisco earthquake, and the presence of widely separated parallel faults indicate that relative motion is distributed below the seismogenic zone, occurring by inelastic flow rather than by aseismic slip on discrete fault planes.

Prescott, W. H.; Nur, A.

1981-01-01

6

CONSTANCY OF THE RELATION BETWEEN FLOC SIZE AND DENSITY IN SAN FRANCISCO BAY  

Science.gov (United States)

Ganju, N.K., D.H. Schoellhamer, M.C. Murrell, J.W. Gartner and S.A. Wright. In press. Constancy of the Relation Between Floc Size and Density in San Francisco Bay. In: INTERCOH 2003: Proceedings of the 7th International Conference on Nearshore and Estuarine Cohesive Sediment Tran...

7

Mesure et retroaction sur un qubit multi-niveaux en electrodynamique quantique en circuit non lineair  

Science.gov (United States)

L'electrodynamique quantique en circuit est une architecture prometteuse pour le calcul quantique ainsi que pour etudier l'optique quantique. Dans cette architecture, on couple un ou plusieurs qubits supraconducteurs jouant le role d'atomes a un ou plusieurs resonateurs jouant le role de cavites optiques. Dans cette these, j'etudie l'interaction entre un seul qubit supraconducteur et un seul resonateur, en permettant cependant au qubit d'avoir plus de deux niveaux et au resonateur d'avoir une non-linearite Kerr. Je m'interesse particulierement a la lecture de l'etat du qubit et a son amelioration, a la retroaction du processus de mesure sur le qubit de meme qu'a l'etude des proprietes quantiques du resonateur a l'aide du qubit. J'utilise pour ce faire un modele analytique reduit que je developpe a partir de la description complete du systeme en utilisant principalement des transfprmations unitaires et une elimination adiabatique. J'utilise aussi une librairie de calcul numerique maison permettant de simuler efficacement l'evolution du systeme complet. Je compare les predictions du modele analytique reduit et les resultats de simulations numeriques a des resultats experimentaux obtenus par l'equipe de quantronique du CEASaclay. Ces resultats sont ceux d'une spectroscopie d'un qubit supraconducteur couple a un resonateur non lineaire excite. Dans un regime de faible puissance de spectroscopie le modele reduit predit correctement la position et la largeur de la raie. La position de la raie subit les decalages de Lamb et de Stark, et sa largeur est dominee par un dephasage induit par le processus de mesure. Je montre que, pour les parametres typiques de l'electrodynamique quantique en circuit, un accord quantitatif requiert un modele en reponse non lineaire du champ intra-resonateur, tel que celui developpe. Dans un regime de forte puissance de spectroscopie, des bandes laterales apparaissent et sont causees par les fluctuations quantiques du champ electromagnetique intra-resonateur autour de sa valeur d'equilibre. Ces fluctuations sont causees par la compression du champ electromagnetique due a la non-linearite du resonateur, et l'observation de leur effet via la spectroscopie d'un qubit constitue une premiere. Suite aux succes quantitatifs du modele reduit, je montre que deux regimes de parametres ameliorent marginalement la mesure dispersive d'un qubit avec un resonateur lineaire, et significativement une mesure par bifurcation avec un resonateur non lineaire. J'explique le fonctionnement d'une mesure de qubit dans un resonateur lineaire developpee par une equipe experimentale de l'Universite de Yale. Cette mesure, qui utilise les non-linearites induites par le qubit, a une haute fidelite, mais utilise une tres haute puissance et est destructrice. Dans tous ces cas, la structure multi-niveaux du qubit s'avere cruciale pour la mesure. En suggerant des facons d'ameliorer la mesure de qubits supraconducteurs, et en decrivant quantitativement la physique d'un systeme a plusieurs niveaux couple a un resonateur non lineaire excite, les resultats presentes dans cette these sont pertinents autant pour l'utilisation de l'architecture d'electrodynamique quantique en circuit pour l'informatique quantique que pour l'optique quantique. Mots-cles: electrodynamique quantique en circuit, informatique quantique, mesure, qubit supraconducteur, transmon, non-linearite Kerr

Boissonneault, Maxime

8

Traffic-related air pollution in the community of San Ysidro, CA, in relation to northbound vehicle wait times at the US–Mexico border Port of Entry  

Science.gov (United States)

The San Diego/Tijuana US–Mexico border crossing at the San Ysidro Port of Entry (POE) is the world's busiest international land border crossing (GSA, 2013). San Ysidro, California, is the US community immediately adjacent to the border crossing. More than 90% of San Ysidro residents are Hispanic, and the average household income is less than 60% of the San Diego regional average. This study investigated the San Ysidro POE as a source of traffic-related air pollutants in San Ysidro, especially in relation to wind direction and northbound vehicle wait times. The pollutants ultrafine particulate matter (UFP), black carbon (BC), and particulate matter <2.5 ?m in diameter (PM2.5) were periodically sampled through the course of 2010 at four rooftop locations: one commercial establishment near the POE, two elementary schools in San Ysidro, and a coastal estuary reference site. Weather data from two nearby sites and northbound border wait times were also collected. Results indicate consistently higher daytime BC and UFP concentrations at the measurement sites near the POE. Pollution concentrations were higher during low wind speeds or when wind was blowing from the POE towards San Ysidro. In February, March and November measurements, black carbon pollution appeared to be significantly positively associated with the POE northbound wait times when the wind direction was blowing from the POE towards San Ysidro or during low wind speeds, but not when the wind direction was from the west/northwest towards the POE. This pilot study is the first to investigate the potential effect of the POE, especially the long northbound traffic delays, on the nearby community of San Ysidro. Disparities in traffic exposures are an environmental justice issue and this should be taken into account during planning and operation of POEs.

Quintana, Penelope J. E.; Dumbauld, Jill J.; Garnica, Lynelle; Chowdhury, M. Zohir; Velascosoltero, José; Mota-Raigoza, Arturo; Flores, David; Rodríguez, Edgar; Panagon, Nicolas; Gamble, Jamison; Irby, Travis; Tran, Cuong; Elder, John; Galaviz, Vanessa E.; Hoffman, Lisa; Zavala, Miguel; Molina, Luisa T.

2014-05-01

9

Sex hormone-related variations of cognitive performance in !Kung San hunter-gatherers of Namibia.  

Science.gov (United States)

The relation of circulating sex hormones and cognitive abilities was investigated in 114 healthy !Kung San men ('bushmen') of Namibia/Southern Africa who lived mainly as traditional hunter-gatherers. Blood and saliva samples were analysed by use of radioimmunoassays in order to determine the serum concentrations of total testosterone (Tser), 5 alpha-dihydrotestosterone (DHT), and estradiol (E2), as well as the level of bioavailable, non-SHBG-bound 'free' testosterone in the saliva. The cognitive ability was assessed with two verbal (verbal fluency) and three nonverbal tests (tactual-spatial functioning, field independence/field dependence). As to be expected from previous research on Western samples, all three androgens but not E2 are of significance to the !Kung San men's cognitive performance. Tser exhibits a positive relation to tactual-spatial abilities and to the degree of lateralization of this task; on the other hand, Tser is negatively correlated with verbal fluency. Testosterone in the saliva is also significantly positively correlated to tactual-spatial test scores and, in addition, to field independence. DHT and the ratio DHT/Tser are positively related to verbal fluency and negatively to the degree of lateralization of tactual-spatial performance. PMID:8515835

Christiansen, K

1993-01-01

10

Quantitative analysis and relevant features of the scientific literature related to SAXS and SANS  

International Nuclear Information System (INIS)

We present and discuss here numerical information derived from a systematic searching of scientific papers related to SAXS and SANS published in indexed journals - from 1945 until nowadays - recorded by the Web of Science Data Bank (WoS). We have detected interesting features regarding the time dependence of the number of papers/year, N(t), indicating the existence of three well-defined periods of historical evolution with rather well-defined boundaries. All three periods exhibit a positive and approximately linear variation of N(t) but, at the two transitions between periods, the rate of growth exhibits clear and strong increases. Differences of the historical evolutions in the numbers of papers/year related to SAXS and to SANS were established. The different behaviours regarding the numbers of papers/year related to SAXS and to SANS and the existence of three different and well defined periods for N(t) can be qualitatively understood as a consequence of the progressive and increasing availability along the last three decades of very brilliant synchrotrons, last generation commercial X-ray sources, new neutron facilities, powerful computers and novel theoretical approaches for SAS data analysis. The rates of growth in the number of papers/year published by authors from a set of different countries are approximately constant along the last two decades. For other countries we have detected a slowing down effect in the number of papers/year while a clear acceleration could be noticed for the production of SAS papers by authors from several emerging countries. These opposite trends compensate in such a way that the number of SAS (SAXS+SAXS) articles published per year all around the world maintained a vigorous linear growth - during more than 20 years - at a constant rate of 60 papers/year, without any indication of eventual saturation. The observed distribution of articles among different journals indicates that a very high fraction of the volume of SAS research is focused to the structure of soft matter.

2010-10-01

11

MESOZOIC MAGMATISM IN EAST URUGUAY: PETROLOGICAL CONSTRAINTS RELATED TO THE SIERRA SAN MIGUEL REGION  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: English Abstract in spanish Este trabajo presenta nuevos resultados geológico-estructurales y geoquímicos relacionados con el magmatismo Mesozoico del extremo Este de Uruguay (Sierra de San Miguel, Departamento de Rocha), asociados a la apertura del océano Atlántico Sur. Fueron reconocidas para la región estudiada tres unidade [...] s volcánicas/subvolcánicas. La asociación volcánica félsica está compuesta por derrames riolíticos - dacíticos, con texturas dominantemente porfiríticas y naturaleza química subalcalina. Asociadas a estas riolitas ocurren niveles de rocas piroclásticas. La asociación subvolcánica félsica está compuesta por granófiros con una extensión superficial de aproximadamente 25 km2, cortados por diques máficos y félsicos. Fue identificada también una asociación básica compuesta por diques y un cuerpo de gabro. Todas estas unidades son de edad Mesozoico (130 - 127 Ma) y de acuerdo a su carácter químico corresponden a magmas de naturaleza subalcalina a débilmente peralcalina. Abstract in english This work presents new results of a detailed geological and structural investigation focusing the easternmost Uruguayan Mesozoic magmatic occurrences related to the south Atlantic opening. Lithological descriptions, their stratigraphic relationships and complimentary lithochemical characterizations [...] carried out in the San Miguel region (East Uruguay) are presented. Three volcanic/sub-volcanic units have been recognized. The fel-sic volcanic association is composed by rhyolitic - dacitic flows, mainly with porphyritic textures and sub-alkaline nature and related pyroclastic rocks. The felsic sub-volcanic association is characterized by granophyres of about 25 km2 of exposed area, cross- cut by mafic and felsic dykes. Finally, a mafic association has been identified characterized by dykes and a small intrusion of gabbroic composition. All these units are Mesozoic in age (130- 127 Ma) and according to their chemical nature they correspond to sub-alkaline to weak peralkaline magmas.

Muzio, Rossana; Peel, Elena; Morales, Ethel; Veroslavsky, Gerardo; Conti, Bruno.

12

Lithofacies characterization related to the Raigon Formation located in the southern area of the San Jose Department  

International Nuclear Information System (INIS)

In this work the different lithofacies characterization related to the Raigon Formation, located in the southern area of the San Jose Department, is exposed supported by surface and subsurface data. Six stratigraphical sections were constructed considering lithological borehole descriptions to the aim of making a contribution on the spatial distribution, thickness, disposition, lithofaciological variations of this Formation and its stratigraphical relationships with other units

2004-09-01

13

Distance between homes and exercise facilities related to frequency of exercise among San Diego residents.  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Although personal determinants of exercise behavior have been studied extensively, few investigators have examined the influence of the physical environment on exercise habits. A random sample of 2,053 residents of San Diego, CA, were surveyed regarding exercise habits and other variables. A total of 385 exercise facilities in San Diego were classified into categories of either free or pay. After the addresses of respondents and facilities were located on a grid-map and coded, the density of ...

Sallis, J. F.; Hovell, M. F.; Hofstetter, C. R.; Elder, J. P.; Hackley, M.; Caspersen, C. J.; Powell, K. E.

1990-01-01

14

Data related uncertainty in near-surface vulnerability assessments for agrochemicals in the San Joaquin Valley.  

Science.gov (United States)

Precious groundwater resources across the United States have been contaminated due to decades-long nonpoint-source applications of agricultural chemicals. Assessing the impact of past, ongoing, and future chemical applications for large-scale agriculture operations is timely for designing best-management practices to prevent subsurface pollution. Presented here are the results from a series of regional-scale vulnerability assessments for the San Joaquin Valley (SJV). Two relatively simple indices, the retardation and attenuation factors, are used to estimate near-surface vulnerabilities based on the chemical properties of 32 pesticides and the variability of both soil characteristics and recharge rates across the SJV. The uncertainties inherit to these assessments, derived from the uncertainties within the chemical and soil data bases, are estimated using first-order analyses. The results are used to screen and rank the chemicals based on mobility and leaching potential, without and with consideration of data-related uncertainties. Chemicals of historic high visibility in the SJV (e.g., atrazine, DBCP [dibromochloropropane], ethylene dibromide, and simazine) are ranked in the top half of those considered. Vulnerability maps generated for atrazine and DBCP, featured for their legacy status in the study area, clearly illustrate variations within and across the assessments. For example, the leaching potential is greater for DBCP than for atrazine, the leaching potential for DBCP is greater for the spatially variable recharge values than for the average recharge rate, and the leaching potentials for both DBCP and atrazine are greater for the annual recharge estimates than for the monthly recharge estimates. The data-related uncertainties identified in this study can be significant, targeting opportunities for improving future vulnerability assessments. PMID:23099933

Loague, Keith; Blanke, James S; Mills, Melissa B; Diaz-Diaz, Ricardo; Corwin, Dennis L

2012-01-01

15

Effets non lineaires transversaux dans les guides d'ondes plans  

Science.gov (United States)

Les effets non lineaires transversaux dus a l'effet Kerr optique non resonant sont etudies dans deux types de guides a geometrie plane. D'abord (au chapitre 2), l'emission de solitons spatiaux d'un guide de type canal est etudie historiquement, analytiquement et numeriquement dans le but d'en faire la conception et la fabrication, en AlGaAs, dans la region spectrale en deca de la moitie de la bande interdite de ce materiau, soit autour de 1,5 microns. Le composant, tel que concu, comporte une structure de multipuits quantiques. Le desordonnement local de cette structure permet une variation locale du coefficient Kerr dans le guide, ce qui mene a l'emission d'un soliton spatial au-dela d'une puissance optique de seuil. L'observation experimentale d'un changement en fonction de l'intensite du profil de champ a la sortie du guide realise est presentee. Deuxiemement (au chapitre 3) une technique de mesure du coefficient Kerr dans un guide plan est presentee. Cette technique consiste a mesurer le changement de transmission au travers d'un cache place a la sortie du guide en fonction de l'intensite crete a l'entree du guide plan. Une methode pour determiner les conditions optimales pour la sensibilite de la mesure est presentee, illustree de plusieurs exemples. Finalement, la realisation d'un oscillateur parametrique optique basee sur un cristal de niobate de lithium a domaines periodiquement inverses est presentee. La theorie des oscillateurs parametriques optiques est exposee avec une emphase sur la generation d'impulsions intenses a des longueurs d'onde autour de 1,5 microns a partir d'un laser Ti:saphir, dans le but d'obtenir une source pour faire les experiences sur l'emission solitonique.

Dumais, Patrick

16

Environmental assessment related to the operation of San Miguel uranium project, WM-20, Phoneer Uravan, Inc  

International Nuclear Information System (INIS)

An environmental assessment was prepared by the staff of the U.S. Nuclear Regulatory Commission, Office of Nuclear Material Safety and Safeguards, in response to a request for technical assistance from the State of Colorado in connection with licensing action on the proposed Pioneer Uravan, Inc., San Miguel uranium project. The major components of discussion are (1) a summary and recommended licensing conditions, (2) a description of the site environment and the proposed facility operation as well as alternatives in comparison with NRC's performance objectives for tailings management, and (3) a radiological assessment for estimating the facility's compliance with 10 CFR 20 and 40 CFR 190 dose regulations. The NRC recommends licensing the proposed mill subject to stipulated license conditions

1981-01-01

17

Problems related to water quality and algal control in Lopez Reservoir, San Luis Obispo County, California  

Science.gov (United States)

A study to determine the present enrichment status of Liopez Reservoir in San Luis Obispo county, California, and to evaluate copper sulfate algal treatment found that stratification in the reservoir regulates nutrient release and that algal control has been ineffective. Nuisance algal blooms, particularly from March to June, have been a problem in the warm multipurpose reservoir since it was initially filled following intense storms in 1968-69. The cyanophyte Anabaena unispora has been dominant; cospecies are the diatoms Stephanodiscus astraea and Cyclotella operculata, and the chlorophytes Pediastrum deplex and Sphaerocystis schroeteri. During an A. unispora bloom in May 1972 the total lake surface cell count was nearly 100,000 cells/ml. Thermal stratification from late spring through autumn results in oxygen deficiency in the hypolimnion and metalimnion caused by bacterial oxidation of organic detritus. The anaerobic conditions favor chemical reduction of organic matter, which constitute 10-14% of the sediment. As algae die, sink to the bottom, and decompose, nutrients are released to the hypolimnion , and with the autumn overturn are spread to the epilimnion. Algal blooms not only hamper recreation, but through depletion of dissolved oxygen in the epilimnion may have caused periodic fishkills. Copper sulfate mixed with sodium citrate and applied at 1.10-1.73 lbs/acre has not significantly reduced algal growth; a method for determining correct dosage is presented. (Lynch-Wisconsin)

Fuller, Richard H.; Averett, Robert C.; Hines, Walter G.

1975-01-01

18

Safety evaluation report related to the full-term operating license for San Onofre Nuclear Generating Station, Unit 1 (Docket No. 50-206)  

International Nuclear Information System (INIS)

The safety evaluation report for the full-term operating license application filed by the Southern California Edison Company and the San Diego Gas and Electric Company has been prepared by the Office of Nuclear Reactor Regulation of the US Nuclear Regulatory Commission. The facility is located in San Diego County, California. The staff has evaluated the issues related to the conversion of the provisional operating license to a full-term operating license and concluded that the facility can continue to be operated without endangering the health and safety of the public following the license conversion. 43 refs., 3 figs., 3 tabs

1991-01-01

19

Recent development on Malaysian Small Angle Neutron Scattering (MySANS) facility upgrading and related research activities  

International Nuclear Information System (INIS)

This paper describes the recent progress of the MySANS - 'mini' SANS facility and its present applications in materials science and technology research and education. Both management and technical strategies are generally explained. The formation of Reactor Interest Group (RIG) has lead to several experimental projects which collaborative work between MINT and local universities/research institutes. In addition a future work plan is also noted. (author)

2006-03-01

20

Mortalidad por Accidente de Tránsito en la Región Vial Tunja-San Gil, Colombia, 2001 Road accident-related mortality in the Tunja-San Gil area, Colombia, 2001  

Directory of Open Access Journals (Sweden)

Full Text Available ObjetivoIdentificar las características de la mortalidad por accidente de tránsito en la región Tunja-San Gil. Metodología Se realizó un estudio descriptivo de la accidentalidad letal ocurrida durante el año 2001. Se consultaron fuentes primarias (informe de necropsia, acta de levantamiento de cadáver, certificado de defunción e informe de laboratorio de toxicología en el Instituto Nacional de Medicina Legal y Ciencias Forenses y en los hospitales de la región. ResultadosOcurrieron 45 muertes; edad promedio 34,7 años; 75,6 % hombres. La distribución según condición de transitoriedad fue: peatones (37,1 %, motociclistas (25,7 %, conductores (20 %, ciclistas (8,6 % y pasajeros (8,6 %. El fin de semana sucedieron 65,1 % de los accidentes. Los atropellamientos y choques fueron los accidentes más frecuentes. Los sitios con mayor proporción de accidentalidad letal fueron Tunja, la vía Vado Real-Oiba y San Gil. El trauma por accidente de tránsito fue severo, con un “Injury Severity Score” alto (promedio 42,8; 53 % de víctimas fallecieron in situ y 73 % durante las primeras dos horas. Según el Injury Severity Score sólo una de cada tres muertes era no prevenible; 17,8 % fueron prevenibles y 46,7 % potencialmente prevenibles. Conclusiones Se percibe la necesidad de diseñar e implementar un sistema regionalizado de atención de trauma por accidente de tránsito.ObjectivesTo identify the characteristics of mortality related to motor vehicle accidents in the Tunja-San Gil area (Colombia in the year 2001. MethodsA descriptive study was performed on the deaths from road accidents. Autopsy reports, body removal reports, death certificates and blood concentration reports, available at the National Institute for Forensic Sciences and at the local hospitals, were reviewed. Results Forty five fatalities were analyzed. The mean age of the victims was 34,7 years; males were more affected than females, with a 3:1 ratio. 37% were pedestrians, 26% motorcyclists, 20% drivers, 8,6% cyclists and 8,6% passengers. 65,1% of the road accidents occurred during weekends. The most common road accidents were either collisions or by running over. The places with the highest rates of death from motor vehicle related accidents were the urban areas of Tunja and San Gil and the Vado Real-Oiba road. The mean Injury Severity Score was 42,8. 53% of the deaths at the scene received no medical care; 73% of the victims died within two hours after the motor-vehicle accident. 17,8% of deaths were definitely preventable and 46,7% were possibly preventable, for a combined preventable death rate of 64,5 %.

Luis Enrique Mayorga Mogollón

 
 
 
 
21

30 August 2011 - Médecins sans frontières International President U. K Karunakara signing the guest book with Head of International Relations F. Pauss and Adviser for Life Sciences M. Dosanjh; visiting CMS underground experimental area with Collaboration Spokesperson G. Tonelli.  

CERN Multimedia

30 August 2011 - Médecins sans frontières International President U. K Karunakara signing the guest book with Head of International Relations F. Pauss and Adviser for Life Sciences M. Dosanjh; visiting CMS underground experimental area with Collaboration Spokesperson G. Tonelli.

Maximilien Brice

2011-01-01

22

Mortalidad por Accidente de Tránsito en la Región Vial Tunja-San Gil, Colombia, 2001 / Road accident-related mortality in the Tunja-San Gil area, Colombia, 2001  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish Abstract in spanish ObjetivoIdentificar las características de la mortalidad por accidente de tránsito en la región Tunja-San Gil. Metodología Se realizó un estudio descriptivo de la accidentalidad letal ocurrida durante el año 2001. Se consultaron fuentes primarias (informe de necropsia, acta de levantamiento de cadáv [...] er, certificado de defunción e informe de laboratorio de toxicología) en el Instituto Nacional de Medicina Legal y Ciencias Forenses y en los hospitales de la región. ResultadosOcurrieron 45 muertes; edad promedio 34,7 años; 75,6 % hombres. La distribución según condición de transitoriedad fue: peatones (37,1 %), motociclistas (25,7 %), conductores (20 %), ciclistas (8,6 %) y pasajeros (8,6 %). El fin de semana sucedieron 65,1 % de los accidentes. Los atropellamientos y choques fueron los accidentes más frecuentes. Los sitios con mayor proporción de accidentalidad letal fueron Tunja, la vía Vado Real-Oiba y San Gil. El trauma por accidente de tránsito fue severo, con un ?Injury Severity Score? alto (promedio 42,8); 53 % de víctimas fallecieron in situ y 73 % durante las primeras dos horas. Según el Injury Severity Score sólo una de cada tres muertes era no prevenible; 17,8 % fueron prevenibles y 46,7 % potencialmente prevenibles. Conclusiones Se percibe la necesidad de diseñar e implementar un sistema regionalizado de atención de trauma por accidente de tránsito. Abstract in english ObjectivesTo identify the characteristics of mortality related to motor vehicle accidents in the Tunja-San Gil area (Colombia) in the year 2001. MethodsA descriptive study was performed on the deaths from road accidents. Autopsy reports, body removal reports, death certificates and blood concentrati [...] on reports, available at the National Institute for Forensic Sciences and at the local hospitals, were reviewed. Results Forty five fatalities were analyzed. The mean age of the victims was 34,7 years; males were more affected than females, with a 3:1 ratio. 37% were pedestrians, 26% motorcyclists, 20% drivers, 8,6% cyclists and 8,6% passengers. 65,1% of the road accidents occurred during weekends. The most common road accidents were either collisions or by running over. The places with the highest rates of death from motor vehicle related accidents were the urban areas of Tunja and San Gil and the Vado Real-Oiba road. The mean Injury Severity Score was 42,8. 53% of the deaths at the scene received no medical care; 73% of the victims died within two hours after the motor-vehicle accident. 17,8% of deaths were definitely preventable and 46,7% were possibly preventable, for a combined preventable death rate of 64,5 %.

Mayorga Mogollón, Luis Enrique.

23

SAN PEDRO GEODATA BROWSER  

Science.gov (United States)

The San Pedro Data Browser was developed by the Landscape Ecology Branch of the U.S. Environmental Protection Agency (Las Vegas, NV). The goal of the Landscape Sciences Program is to improve decision-making relative to natural and human resource management through the development...

24

On-going development on MINT's small angle neutron scattering (SANS) facility upgrading and related research activities  

International Nuclear Information System (INIS)

The TRIGA MARK II Research reactor at the Malaysian Institute for Nuclear Research (MINT) was commissioned in July 1982: next year will be its 20 year criticality. Since then various works have been performed to utilize the neutrons produced from this steady state reactor. Projects undertaken are the development and utilization of the Neutron Radiography (MyNR) and Small Angle Neutron Scattering (MySANS) facilities. Materials research, together with traditional scientific interest in understanding matter at the atomic scale, requires detail knowledge of the arrangement and the dynamics of the atoms or molecules. To enhance Malaysian research and development in this area in particular nanoparticle and nanostructure, MINT has made a dedicated commitment to strengthen the utilizing and maintaining the existing small angle neutron scattering facility to its optimal. This paper describes the recent progress of the MySANS facility and its proposed applications in materials science and technology research and education. Both management and technical strategies are generally explained. In addition a future work plan is also noted. (author)

2003-03-01

25

On-going development on MINT's small angle neutron scattering (SANS) facility upgrading and related research activities  

Energy Technology Data Exchange (ETDEWEB)

The TRIGA MARK II Research reactor at the Malaysian Institute for Nuclear Research (MINT) was commissioned in July 1982: next year will be its 20 year criticality. Since then various works have been performed to utilize the neutrons produced from this steady state reactor. Projects undertaken are the development and utilization of the Neutron Radiography (MyNR) and Small Angle Neutron Scattering (MySANS) facilities. Materials research, together with traditional scientific interest in understanding matter at the atomic scale, requires detail knowledge of the arrangement and the dynamics of the atoms or molecules. To enhance Malaysian research and development in this area in particular nanoparticle and nanostructure, MINT has made a dedicated commitment to strengthen the utilizing and maintaining the existing small angle neutron scattering facility to its optimal. This paper describes the recent progress of the MySANS facility and its proposed applications in materials science and technology research and education. Both management and technical strategies are generally explained. In addition a future work plan is also noted. (author)

Mohamed, Abdul Aziz Bin; Mohd, Shukri Bin; Muhammad, Azali Bin [Malaysian Institute for Nuclear Technology Research (MINT), Kajang (Malaysia)

2003-03-01

26

Control estructural en el emplazamiento del volcanismo y mineralizaciones neógenas, distrito Cañada Honda, San Luis Structural control on Neogene volcanism and related ore deposits at Cañada Honda district, San Luis province  

Directory of Open Access Journals (Sweden)

Full Text Available Emplazada en la zona de transición sur del segmento de flat-slab pampeano y directamente vinculada a la horizontalización de la placa de Nazca, la faja volcánica terciaria de San Luis delata la migración que experimentó el arco magmático andino a la latitud de los 33º S en tiempos mio-pliocenos. Esta faja volcánica comprende una serie de distritos metalogenéticos de gran importancia en las Sierras Pampeanas de San Luis. Las rocas volcánicas y mineralizaciones de la faja volcánica terciaria se encuentran representadas en los campos volcánicos La Carolina, Cañada Honda - Cerros Largos, Cerros del Rosario y El Morro, dispuestos saltuariamente según una dirección ONO-NO. Las edades K-Ar disponibles indican que el volcanismo se habría iniciado más tempranamente en el sector occidental de esta faja, y que habría finalizado ~ 10 Ma más tarde en la región oriental. El distrito Cañada Honda, el más antiguo y longevo de esta faja volcánica, registra eventos volcánicos e hidrotermales cuyas edades varían entre 12-13 Ma y 7,3 Ma, abarcando facies lávico-hipabisales y volcaniclásticas. Los resultados del análisis estructural demuestran el importante control que, directa o indirectamente, habrían ejercido las estructuras previas en el emplazamiento de las rocas volcánicas y mineralizaciones. Análisis de fábrica deformacional y cinemático han permitido reconocer dos asociaciones volcano-tectónicas diferentes. una de estas asociaciones se vincularía a la reactivación dextral de estructuras paralelas a la foliación del basamento. La asociación principal estaría vinculada con el desarrollo de dos depresiones volcano-tectónicas alineadas en dirección ONO-NO. Sus estructuras principales, de orientación ONO-NO, revelan componentes de desplazamiento senestral y normal tanto a escala del distrito Cañada Honda como de la faja volcánica terciaria.Located at the transitional southern end (33° S of the Pampean flat-slab, the Tertiary volcanic belt records the eastward migration of the Andean volcanic arc due to the flattening of the Nazca Plate in Mio-Pliocene times. The tertiary volcanic belt encompasses several very important metallogenetic districts in the San Luis Pampean Ranges. Volcanic rocks and associated ore-deposits crop out following a NW-WNW trending belt at La Carolina, Cañada Honda - Cerros Largos, Cerros del Rosario and El Morro volcanic fields. The available geochronological data indicate that the volcanic activity began early at the western end of the belt and ended ~ 10 Ma later at its eastern border. Cañada Honda district represents the oldest and longest-lived volcanic field of the tertiary volcanic belt. It records eruptive events and related hydrothermal alteration from 12-13 Ma to 7.3 Ma, including lavas and volcaniclastic products. Preliminary structural analysis shows that previous structures have strongly controlled, either directly or indirectly, the emplacement of volcanic rocks and related mineral deposits. Kinematic and strain fabric analyses allow to recognize two volcano-tectonic associations. One of these associations would be related to dextral reactivations of structures parallel to basement foliation. On the other hand, the main one would be linked with the generation of two volcano-tectonic depressions which are aligned in a NW-WNW direction. Their dominant structures trend NW-WNW and reveal sinistral-normal motions, both at local and Tertiary volcanic belt scales.

María Silvia Japas

2010-12-01

27

Control estructural en el emplazamiento del volcanismo y mineralizaciones neógenas, distrito Cañada Honda, San Luis / Structural control on Neogene volcanism and related ore deposits at Cañada Honda district, San Luis province  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish Emplazada en la zona de transición sur del segmento de flat-slab pampeano y directamente vinculada a la horizontalización de la placa de Nazca, la faja volcánica terciaria de San Luis delata la migración que experimentó el arco magmático andino a la latitud de los 33º S en tiempos mio-pliocenos. Est [...] a faja volcánica comprende una serie de distritos metalogenéticos de gran importancia en las Sierras Pampeanas de San Luis. Las rocas volcánicas y mineralizaciones de la faja volcánica terciaria se encuentran representadas en los campos volcánicos La Carolina, Cañada Honda - Cerros Largos, Cerros del Rosario y El Morro, dispuestos saltuariamente según una dirección ONO-NO. Las edades K-Ar disponibles indican que el volcanismo se habría iniciado más tempranamente en el sector occidental de esta faja, y que habría finalizado ~ 10 Ma más tarde en la región oriental. El distrito Cañada Honda, el más antiguo y longevo de esta faja volcánica, registra eventos volcánicos e hidrotermales cuyas edades varían entre 12-13 Ma y 7,3 Ma, abarcando facies lávico-hipabisales y volcaniclásticas. Los resultados del análisis estructural demuestran el importante control que, directa o indirectamente, habrían ejercido las estructuras previas en el emplazamiento de las rocas volcánicas y mineralizaciones. Análisis de fábrica deformacional y cinemático han permitido reconocer dos asociaciones volcano-tectónicas diferentes. una de estas asociaciones se vincularía a la reactivación dextral de estructuras paralelas a la foliación del basamento. La asociación principal estaría vinculada con el desarrollo de dos depresiones volcano-tectónicas alineadas en dirección ONO-NO. Sus estructuras principales, de orientación ONO-NO, revelan componentes de desplazamiento senestral y normal tanto a escala del distrito Cañada Honda como de la faja volcánica terciaria. Abstract in english Located at the transitional southern end (33° S) of the Pampean flat-slab, the Tertiary volcanic belt records the eastward migration of the Andean volcanic arc due to the flattening of the Nazca Plate in Mio-Pliocene times. The tertiary volcanic belt encompasses several very important metallogenetic [...] districts in the San Luis Pampean Ranges. Volcanic rocks and associated ore-deposits crop out following a NW-WNW trending belt at La Carolina, Cañada Honda - Cerros Largos, Cerros del Rosario and El Morro volcanic fields. The available geochronological data indicate that the volcanic activity began early at the western end of the belt and ended ~ 10 Ma later at its eastern border. Cañada Honda district represents the oldest and longest-lived volcanic field of the tertiary volcanic belt. It records eruptive events and related hydrothermal alteration from 12-13 Ma to 7.3 Ma, including lavas and volcaniclastic products. Preliminary structural analysis shows that previous structures have strongly controlled, either directly or indirectly, the emplacement of volcanic rocks and related mineral deposits. Kinematic and strain fabric analyses allow to recognize two volcano-tectonic associations. One of these associations would be related to dextral reactivations of structures parallel to basement foliation. On the other hand, the main one would be linked with the generation of two volcano-tectonic depressions which are aligned in a NW-WNW direction. Their dominant structures trend NW-WNW and reveal sinistral-normal motions, both at local and Tertiary volcanic belt scales.

Japas, María Silvia; Urbina, Nilda Esther; Sruoga, Patricia.

28

Butyltin compounds and their relation with organic matter in marine sediments from San Vicente Bay-Chile.  

Science.gov (United States)

Tributyltin and its degradation products, mono-and dibutyltin have been determined in sediments collected in some representative sites in San Vicente Bay, Chile. The organic matter contents of sediments and water collected simultaneously from the same sampling sites were also determined. High levels of total organic carbon were found in sediments, especially in those from the northern part of the bay (1.80-8.87%). Good correlations were found between total organic carbon and the oxidizable and refractory carbon fractions. Among the butyltin species determined, TBT presented the highest levels, ranging from 14 to 1,560 ng Sn g(-1) dry weight. Concentration ratios of TBT to DBT ranged between 1.33 and 3.10, showing a high degree of contamination in sediments of this Chilean bay. All data obtained were analysed by the chemometric method of principal components analysis. A strong correlation was found between TBT and DBT concentrations in sediments, the different organic matter contents in sediments and water. In marine organisms only TBT was detected, containing the filterer organism Semele solida higher level than Perumytilus purpuratus and Pyura chilensis (220, 150 and 120 ng Sn g(-1) dry weight, respectively). For the alga Rodoficea iridae the TBT concentration was 60 ng Sn g(-1) dw. Comparatively, these values are higher than those reported for the same kind of marine organisms worldwide. The different samples from San Vicente Bay were found to be contaminated by TBT. This contamination can be attributed to the different anthropogenic activities taking place in the bay. PMID:18651232

Pinochet, Hugo; Tessini, Catherine; Bravo, Manuel; Quiroz, Waldo; De Gregori, Ida

2009-08-01

29

Relaciones tróficas de los peces del embalse San Miguel Arco, de Soyaniquilpan, Estado de México / Relations trofics of the fish of the San Miguel Arco dam, in Soyaniquilpan, State of Mexico  

Scientific Electronic Library Online (English)

Full Text Available SciELO Mexico | Language: Spanish Abstract in spanish Las relaciones de los organismos en la naturaleza se basan en dos ciclos, uno de materia y el otro de energía, dichos ciclos dan origen a las cadenas tróficas las cuales dan origen a los tres niveles tróficos; autótrofos, herbívoros y carnívoros. Para el caso de los peces de agua dulce, los organism [...] os jóvenes viven y se alimentan en la orilla y superficie del agua, para conocer lo que comen se analiza el tracto digestivo. Por lo cual el presente trabajo pretende determinar la trama trófica de los peces del embalse San Miguel Arco. Se capturaron los peces del embalse con un chinchorro de 30 metros de largo y 1/3 de pulgada, los organismos se fijaron con formalina al 10 %, los peces se identificaron al igual que el alimento que consumieron, con claves especializadas, a la abundancia de los grupos alimenticios se les aplicó el índice de Simpson. Se encontró que Chirostoma humboldtianum, es zooplanctófago especialista, Cyprinus carpió, y Carassius auratus son planctófagos generalistas y Poeciliopsis infans es planctófago especialista. La trama trófica se basa en zooplancton (Bosmina y Mastigodiaptomus) además de zoobentos (Corixidae). Abstract in english The relations of the organisms in the nature are based on two cycles, one of matter and the other of energy, these cycles give origin to the food chains which give origin to the three food levels; autotrophs, herbivorous and carnivores. For the case of freshwater fishes, the young organisms live and [...] they are fed in the border and surface of the water, to know what they eat analyzes alimentary canal. Thus the present work tries to determine the trofhic plot of the fish of the San Miguel dam Arc. The fish of the dam with a small boat of 30 meters in length captured themselves and 1/3 of inch, the organisms paid attention with formalin to 10 %, the fish were identified like the food that consumed, with specialized keys, to the abundance of the nutritional groups I am applied the index to them of Simpson. One was that Chirostoma humboldtianum, is zooplanctofago specialistic, Cyprinus carpio, and Carassius auratus is planctofagos generalist and Poeciliopsis infans is planctófago specialistic. The trofic plot is based on zooplancton (Bosmina and Mastigodiaptomus) in addition to zoobentos (Corixidae).

Yubi Armendáriz, M. Á.; Navarrete Salgado, N. A.; Elías Fernández, G.; Vázquez Gómez, G.; Urrieta Zapiain, E. S..

30

Linear chrono-amperometry using re-dissolution: application to halides; La chronoamperometrie lineaire par redissolution: application aux halogenures  

Energy Technology Data Exchange (ETDEWEB)

The possibility of applying linear chrono-amperometry to analysis was studied using a falling-drop mercury electrode. Measurements of the cations were carried out by direct reduction or by prior formation of an amalgam, which is then oxidized. Using the first technique, the minimum concentration that can be attained is about 10{sup -6} M and the reproducibility of the results is of the order of 2%. With the second method the sensitivity is much improved: in the concentration range of 10{sup -7} to 10{sup -8} M, the scatter of the results is less than 10% if the agitation and temperature conditions are kept constant. The halides are determined by re-dissolving the mercurous halide deposit formed by electrolysis. From the analytical point of view, the sensitivity is limited in the domain where the phenomena can be interpreted and used. In the case of the chloride ion the lower limit of this zone is close to 10{sup -5} M; it is 10{sup -6} M for the bromide and less than 10{sup -7} M for the iodide. For lower concentrations, simple laws that might be applied in analysis are no longer valid. However, the splitting of the peak observed during the reduction of the mercurous iodide deposit was interpreted as showing that the mono-molecular Hg{sub 2}I{sub 2} layer formed on the drop has particular electrochemical properties. (authors) [French] Les possibilites analytiques de la chronoamperometrie lineaire ont ete etudiees en utilisant une electrode de mercure a goutte pendante. Le dosage des cations a ete effectue par reduction directe ou par formation prealable d'un amalgame puis oxydation de celui-ci. Par la premiere technique la concentration minimale que l'on peut atteindre est d'environ 10{sup -6} M et la reproductibilite des resultats est de l'ordre de 2%. Par la seconde methode la sensibilite se trouve grandement amelioree; dans une zone de concentration comprise entre 10{sup -7} et 10{sup -8} M, la dispersion des determinations est inferieure a 10% si les conditions d'agitation et de temperature sont maintenues constantes. Le dosage des halogenures est realise par redissolution d'un depot d'halogenure mercureux constitue par une electrolyse prealable. Du point de vue analytique, la sensibilite est limitee au domaine de concentrations ou les phenomenes sont interpretables et exploitables. Dans le cas de l'ion chlorure la limite inferieure de ce domaine est voisine de 10{sup -5} M; elle est de 10{sup -6} M pour le bromure et inferieure a 10{sup -7} M pour l'iodure. Pour des concentrations inferieures, les lois simples susceptibles d'applications analytiques ne sont plus verifiees. Cependant, le dedoublement du pic observe lors de la reduction de l'iodure mercureux depose a ete interprete en mettant en evidence les proprietes electrochimiques particulieres de la couche mono-moleculaire de Hg{sub 2}I{sub 2} formee sur la goutte. (auteurs)

Perchard, J.-P.; Buvet, M.; Molina, R. [Commissariat a l' Energie Atomique, Centre d' Etudes Nucleaires de Fontenay-aux-Roses, 92 (France)

1966-06-01

31

Relación entre algunas técnicas de reparación de hipospadias y complicaciones en el Hospital Universitario San Vicente de Paul 1986- 2005 / Relation between some thecniques of hypospadias repair and complications: Universitary San Vicente de Paul Hospital 1986-2005  

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: Spanish Abstract in spanish Objetivo: El éxito en la reparación quirúrgica de hipospadias depende de variables propias del paciente y de variables relacionadas con la técnica quirúrgica. El cirujano dispone de varias técnicas quirúrgicas, lo que obliga ha escoger la técnica mas indicada para obtener los mejores resultados. El [...] objeto de este estudio retrospectivo fue evaluar las técnicas quirúrgicas utilizadas y su asociación con complicaciones postoperatorias. Metodología: Es un estudio descriptivo y retrospectivo en el cual se revisaron las historia clínicas de 207 pacientes sometidos a corrección de hipospadias en el Hospital Universitario San Vicente de Paúl, entre enero de 1986 y diciembre de 2005. Resultados: Se revisaron un total de 207 historias clínicas, la edad de cirugía fue entre 1 y 14 años de edad. La frecuencia de las técnicas utilizadas fueron: Duckett 38,7%, Mathieu 30%, MAGPI 11.6%, Snodgrass 6.3% y otras técnicas representaron en pacientes 14%. Las complicaciones postoperatorias fueron: Hemorrágicas (1,9%), Infecciosas (1.9%), divertículos uretrales (3,9%), cuerda ventral residual (5.8%), dehiscencias (8,7%), estenosis (23,2%) y fístulas (41%). El desarrollo de estenosis es un factor de riesgo para la aparición de fístulas, y el uso de PDS como material de sutura fue un factor protector estadísticamente significativo. El cubrimiento de la uretroplastia con otra capa de tejido, la edad para la corrección, y el tiempo que permaneció el paciente con derivación uretral no resultaron variables estadísticamente significativas para la prevención de complicaciones postoperatorias. La estenosis y el uso de PDS como material de sutura si resultaron variables significativas en la reducción de complicaciones postoperatorias (p Abstract in english Objective: The incidence of hypospadias has been increasing in the last decades. Successful hypospadias repair depends on patient factors and surgical technique, a factor closely related to the surgeon’s experience. The aim of this descriptive, retrospective study was to determine the preferred tech [...] nique and its association with postoperative complications. Methods: Charts of 207 patients who had had hypospadias repair performed between January 1986 and December 2005, in the San Vicente de Paul University Hospital, were reviewed. Results: Hypospadias repair was performed in patients between 1 and 14 years of age. Duckett technique was performed in 38.7%, Mathiew technique in 30% MAGPI technique in 11.6%, Snodgrass in 6.3% and other techniques in 14% of the patients. Postoperative complications included hemorrhagic complications (1.9%), infectious complications (1.9%), urethral diverticular dilatation (3.9%), residual ventral chordee (5.8%), failure of urethroplasty, (8.7%), strictures (23%), and fistulas (41%). Strictures was the most important risk factor for postoperative fistulas (p0.05). Patients with hypospadias repair with PDS sutures had a lower incidence of postoperative fistulas (p

J.A., Martínez Montoya; A.A., Chams Anturi; D.F., Contreras Pérez.

32

A geochemical approach to assessing the relative contributions of rivers, wetlands and island drains to dissolved organic matter in the Sacramento-San Joaquin River Delta  

Science.gov (United States)

The Sacramento-San Joaquin River Delta (Delta) is a hydrologically complex system which, in addition to being used for crop production, development, and recreation, provides drinking water to over 23 million Californians. Understanding how existing Delta habitats currently affect dissolved organic matter (DOM) dynamics seasonally will help us predict how future changes in land use might influence water quality. This study assessed whether different sources (rivers, wetlands, open water, island drains) contribute DOM to the Delta, examined the composition of the added DOM, and then assessed the relative importance of DOM derived from these sources to the quality of water arriving at Clifton Court for export into the California State Water Project. We used a geochemical fingerprinting approach to characterize the DOM originating from different Delta habitats that employed a number of analyses including absorbance, fluorescence, lignin content and composition, ?13C and ?15N isotopic composition, structural groupings determined by 13C-NMR, and specific disinfection byproduct (DBP) formation potential. These qualitative parameters adequately distinguished DOM derived from four distinct sources and, thus, enabled us to use a linear mixing model to estimate the contribution of these sources to DOM exiting the Delta. Comparison of water entering the Delta via the Sacramento and San Joaquin Rivers versus water exiting the Delta at Clifton Court indicated that the Delta was a source of DOM throughout the year, particularly in February, March, and May when concentrations already were high in incoming river water. Water passage through shallow wetlands and subsided islands significantly increased DOM concentrations, while deep open water habitats supporting submerged aquatic vegetation had little discernable effect on DOM concentrations and composition. Wetlands contributed greatest amounts of DOM in the spring and summer, in contrast to the island drains, which appeared to be important sources of DOM during the winter. Results indicate that significant changes in land use, particularly the introduction of shallow wetlands, could alter existing patterns of DOM concentrations in the Delta.

Kraus, T. E.; Bergamaschi, B. A.; Stepanauskas, R.; Hernes, P.; Kendall, C.; Spencer, R. G.; Losee, R. F.; Fujii, R.

2007-12-01

33

Northern California near San Francisco  

Science.gov (United States)

A part of northern California centered near San Francisco Bay (38.0N, 122.0W) photographed at 3 p.m. January 1, 1974, from the Skylab space station in Earth orbit. This near vertical view encompasses the coastline from Monteray Bay (right) to about 50 miles north of Point Reyes (left) and includes, from bottom to top, San Francisco Bay (center), Sacramento Valley (left center), San Joaquin Valley (right center), and the snow-covered Sierra Nevada. Afternoon shadows sharply delineate a valley which parallels San Francisco Bay, crosses Point Reyes, and lies between the Bay and the Pacific coastline. This valley marks the location of the San Andreas Fault. Forces acting on the crust are causing the land west (bottom) of the fault line to move north relative to land on the east side. Agricultural areas in the Sacramento and San Joaquin Valleys are indicated by the tan areas which are easily discerned in contrast to the green-gray background.

1974-01-01

34

Origin of the San Pedro-Linzor volcanic chain and its relation with the Altiplano-Puna Volcanic Complex, Central Andes  

Science.gov (United States)

Mantle-derived magmas at the Central Andean magmatic province (26 Ma - Recent) had been generated by hydration of the asthenospheric mantle below this zone (Davidson, 1996). After generation, these magmas ascent through a thick continental crust (up to ~70 km) that mostly thickened by crustal shortening of the Andes during this time. The magmatic products erupted during this period of time are characterised by incresingly "crustal isotopic signatures" related with increased crustal assimilation of mantle-derived magmas. However, lavas with 87Sr/86Sr ratios higher than 0,708 indicate not only assimilation but rather attest to a large contribution of anatectic melts that are located at the upper crust. The existence of large volumes of such melts in the upper crust has been proposed by geophysical methods (i.e. the Altiplano-Puna magmatic body; Zandt, et al., 2003) and are related with voluminous silicic volcanism observed in the area (de Silva, 1989). In this work, we present new isotopic data from lavas with SiO2 from 56 to 70 wt. %. These lavas belong to volcanoes distributed in San Pedro-Linzor volcanic chain (22°-22°30'S, northern Chile) which is located completely within the APVC. Upper Pleistocene volcanoes that belong to this volcanic chain are aligned in a NW-SE trend and show 87Sr/86Sr ratios up to 0,709 at 65 to 68 % SiO2. These ratios are at the upper end of isotopic variation in Central Andean andesites (typically 0,706 to 0,708). Moreover, only low Sm/Yb ratios are observed (1,48 - 4,5) in the San Pedro-Linzor volcanic chain compared to Sm/Yb in other Quaternary Central Andean volcanics, which range from 5 to 10 (Mamani et al., 2010). High Sm/Yb are generally related to garnet during high-pressure magma evolution. High Sr isotope ratios unusually large degrees of contamination of primary magmas by anatectic melts from the Altiplano-Puna magmatic body in the upper crust. Low Sm/Yb ratios are not consistent with magma evolution at great depth even though the crust is ~70 km. This proves that thick crust does not necessarily lead to high Sm/Yb ratios in Andean andesites and that this ratio cannot be used to "calibrate" for crustal thickness in the geological past.

Godoy, B.; Wörner, G.; Kojima, S.; Aguilera, F.

2011-12-01

35

Linear study and bundle adjustment data fusion; Application to vision localization; Recherche lineaire et fusion de donnees par ajustement de faisceaux; Application a la localisation par vision  

Energy Technology Data Exchange (ETDEWEB)

The works presented in this manuscript are in the field of computer vision, and tackle the problem of real-time vision based localization and 3D reconstruction. In this context, the trajectory of a camera and the 3D structure of the filmed scene are initially estimated by linear algorithms and then optimized by a nonlinear algorithm, bundle adjustment. The thesis first presents a new technique of line search, dedicated to the nonlinear minimization algorithms used in Structure-from-Motion. The proposed technique is not iterative and can be quickly installed in traditional bundle adjustment frameworks. This technique, called Global Algebraic Line Search (G-ALS), and its two-dimensional variant (Two way-ALS), accelerate the convergence of the bundle adjustment algorithm. The approximation of the re-projection error by an algebraic distance enables the analytical calculation of an effective displacement amplitude (or two amplitudes for the Two way-ALS variant) by solving a degree 3 (G-ALS) or 5 (Two way-ALS) polynomial. Our experiments, conducted on simulated and real data, show that this amplitude, which is optimal for the algebraic distance, is also efficient for the Euclidean distance and reduces the convergence time of minimizations. One difficulty of real-time tracking algorithms (monocular SLAM) is that the estimated trajectory is often affected by drifts: on the absolute orientation, position and scale. Since these algorithms are incremental, errors and approximations are accumulated throughout the trajectory and cause global drifts. In addition, a tracking vision system can always be dazzled or used under conditions which prevented temporarily to calculate the location of the system. To solve these problems, we propose to use an additional sensor measuring the displacement of the camera. The type of sensor used will vary depending on the targeted application (an odometer for a vehicle, a lightweight inertial navigation system for a person). We propose to integrate this additional information directly into an extended bundle adjustment, by adding a constraint term in the weighted cost function. We evaluate three methods (based on machine learning or regularization) that dynamically select the weight associated to the constraint and show that these methods can be used in a real time multi-sensor SLAM, and validate them with different types of constraint on the orientation or on the scale. Experiments conducted on real video sequences show that this technique of constrained bundle adjustment reduces the drifts observed with the classical vision algorithms and improves the global accuracy of the positioning system. (author) [French] Les travaux presentes dans ce manuscrit concernent le domaine de la localisation et la reconstruction 3D par vision artificielle. Dans ce contexte, la trajectoire d'une camera et la structure 3D de la scene filmee sont initialement estimees par des algorithmes lineaires puis optimisees par un algorithme non-lineaire, l'ajustement de faisceaux. Cette these presente tout d'abord une technique de recherche de l'amplitude de deplacement (recherche lineaire), ou line search pour les algorithmes de minimisation iterative. La technique proposee est non iterative et peut etre rapidement implantee dans un ajustement de faisceaux traditionnel. Cette technique appelee recherche lineaire algebrique globale (G-ALS), ainsi que sa variante a deux dimensions (Two way-ALS), accelerent la convergence de l'algorithme d'ajustement de faisceaux. L'approximation de l'erreur de reprojection par une distance algebrique rend possible le calcul analytique d'une amplitude de deplacement efficace (ou de deux pour la variante Two way-ALS), par la resolution d'un polynome de degre 3 (G-ALS) ou 5 (Two way-ALS). Nos experimentations sur des donnees simulees et reelles montrent que cette amplitude, optimale en distance algebrique, est performante en distance euclidienne, et permet de reduire le temps de convergence des minimisations. Une difficulte des algorithmes de localis

Michot, J.

2010-12-09

36

Construction Et Etude De Tests En Regression. 1. Correction Du Rapport De Vraisemblance Par Approximation De Laplace En Regression Non-lineaire. 2. Test D'adequation En Regression Isotonique A Partir D'une Asymptotique Des Fluctuations De La Distance  

CERN Document Server

Construction Et Etude De Tests En Regression. 1. Correction Du Rapport De Vraisemblance Par Approximation De Laplace En Regression Non-lineaire. 2. Test D'adequation En Regression Isotonique A Partir D'une Asymptotique Des Fluctuations De La Distance

Tocquet, A S

1998-01-01

37

Formas de contratación y relaciones de trabajo en la cosecha de vid de la provincia de San Juan, Argentina / Types of workers' recruitment and labor relations in the grape harvest at the province of San Juan, Argentina  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish Este artículo analiza, para el caso del mercado de trabajo para tareas de cosecha en la producción de uvas para la elaboración de vinos de baja calidad enológica en el departamento Sarmiento de la provincia de San Juan, la relación que se establece entre las modalidades de contratación y la presenci [...] a de conflictos en el sitio de producción a nivel de la organización del trabajo, la extensión y características de la jornada de trabajo y, los niveles y sistemas de remuneración. Se trata de circunstancias que ponen en tensión de manera continua y cotidiana a la relación de trabajo y van a determinar diferentes respuestas por parte de empleadores, trabajadores y contratistas de mano de obra. El análisis realizado muestra que la conflictividad se intensifica en algunos momentos y bajo determinadas condiciones provocando interrupciones de la jornada de trabajo, despidos, resistencias, medidas de disciplinamiento, entre otras tensiones propias de la relación de trabajo. Abstract in english This article analyzes the case of the labor market for harvesting tasks in the production of low quality grapes for wine making in the Sarmiento department at the province of San Juan. The main concern is about the relationship established between the types of labor contracts and the presence of lab [...] or conflicts in the site of production at the level of the work organization, the size and characteristics of the workday, and the level as well remuneration systems. It is assumed that these circumstances will put pressure on everyday working relationships and will determine different responses from employers, workers, and labor contractors as well. The analysis shows that the conflict will intensify at certain times and under certain conditions, causing workday interruptions, layoffs, resistances, disciplining measures, among other tensions taking place at the working relationship itself.

Guillermo, Neiman; Germán, Quaranta; Mariela, Blanco.

38

San Fernando Valley History  

Science.gov (United States)

A historical tour through the world of San Fernando Valley is always a good idea, and the folks at the California State University-Northridge have made this possible via their amazing archive of digitized materials. The project is based at their Oviatt Library, and it contains historically significant documents, manuscripts, photographs and related graphic materials from public and private collections in the San Fernando Valley. The project started in 2000, and today visitors can browse the collection at their leisure. First-time visitors can look over the "Topics" here, which include "Animals", "Economics", "Industries", and six other areas. The "Communities" area features a fun map with all of the communities of the area on it. Clicking on one of the icons will take users to archived items associated with each place. Also, visitors shouldn't miss the "Transportation" tab as they can view classic images of the old Pacific Electric Railway as well as images of early bus terminals and more contemporary shots of Amtrak in action.

39

Origen de la calidad del agua del acuífero colgado y su relación con los cambios de uso de suelo en el Valle de San Luis Potosí / Origin of water quality of the hanging aquifer and its relation with changes in land use in the San Luis Potosí valley  

Scientific Electronic Library Online (English)

Full Text Available SciELO Mexico | Language: Spanish Abstract in spanish La historia de la ciudad San Luis Potosí se remonta al siglo XVI. Con el descubrimiento de yacimientos de oro y plata y la presencia de cuerpos de agua en el valle, fue fundada la ciudad San Luis Minas del Potosí, dando lugar a los dos primeros usos de suelo, urbano y minero. A partir del siglo XVII [...] , el uso de suelo agrícola se desarrolló en huertos y fue relegado a la periferia de la zona urbana en el transcurso del tiempo. Finalmente el uso de suelo industrial surgió de manera importante en la segunda mitad del siglo XX. En la actualidad los tres usos de suelo existentes dentro del Valle de San Luis Potosí son el urbano, agrícola e industrial. A través de una campaña de muestreo hidrogeoquímico en octubre de 2008, con 44 muestras de norias y 3 de manantiales dentro del valle, se evaluaron parámetros físico-químicos, cationes, aniones y elementos traza. En los tres usos de suelo en la zona de estudio fueron detectados niveles importantes de nitratos, sulfatos, cloruros, conductividad eléctrica, coliformes totales y fecales; sin embargo, en la zona urbana existen anomalías puntuales de metales pesados principalmente de mercurio, bario, estroncio, cadmio, plomo, fósforo y plata, relacionadas a las antiguas actividades mineras y a la industria activa en la zona. Mientras que en la zona agrícola, la presencia de metales está asociada a los canales a cielo abierto que también reciben agua del Tanque Tenorio y éste a su vez de la zona industrial. En la zona industrial se detectaron grandes anomalías de tipo puntual en casi todos los metales pesados analizados; la principal fuente de estos contaminantes corresponden a un terreno industrial activo. Este trabajo está enfocado a evaluar el impacto que ha generado la actividad antropogénica sobre el acuífero colgado del Valle de San Luis Potosí desde inicios de la fundación de la ciudad hasta la actualidad, utilizando la calidad del agua como herramienta de análisis. Abstract in english The history of San Luis Potosi City dates back to the sixteenth century. With the discovery of gold and silver deposits and the presence of water bodies in the valley, the city of San Luis Minas Potosí was founded, leading to the first two uses of land: urban and mining. From the seventeenth century [...] , agricultural land developed in orchards and, over time, was relegated to the periphery of the urban area. Finally, industrial land use emerged significantly in the second half of the twentieth century. Currently the three existing land uses within the Valley of San Luis Potosi are urban, agricultural and industrial. Through a hydrogeochemical sampling campaign in October 2008 with 44 samples from wells and 3 from springs within the valley, we assessed physical and chemical parameters, cations, anions and trace elements. In the three land uses within the study area, we detected significant levels of nitrates, sulphates, chlorides, electrical conductivity, total and fecal coliforms; but in urban areas there are punctual anomalies of heavy metals, mainly mercury, barium, strontium, cadmium, lead, phosphorus and silver related to former mining and active industry in the area. However, in the agricultural zone, the presence of metals is associated with open channels, which also receive water from the Tanque Tenorio and this in turn from the industrial area. In the industrial area, puntual anomalies were detected in almost all heavy analyzed metals; the main source of these pollutants corresponds to an active industrial area. This work aims to evaluate the impact of anthropogenic activity in the perched aquifer of the Valley of San Luis Potosí since the city's foundation to the present, using water quality as an analytical tool.

López-Álvarez, Briseida; Ramos-Leal, José Alfredo; Moran-Ramírez, Janete; Cardona Benavides, Antonio; Hernández Garcia, Guillermo.

40

Earthquakes: San Francisco  

Science.gov (United States)

The prediction of earthquakes may be inexact, but it is vital, especially when large cities such as San Francisco or Los Angeles are threatened. The San Andreas Fault and two other faults, the Heyward and Calaveras faults, all have the potential to deliver a massive earthquake to the San Francisco Bay area. In this video segment, a seismologist explains the historical pattern of seismic activity in the Bay area, and how this information may be used to predict the location and timing of San Francisco's next big earthquake. The segment is three minutes twenty-eight seconds in length. A background essay and discussion questions are included.

 
 
 
 
41

Factores de riesgo relacionados al uso de drogas ilegales: perspectiva crítica de familiares y personas cercanas en un centro de salud público en San Pedro Sula, Honduras / Risk factors related to the use of illegal drugs: the critial perspective of drug users' relatives and acquaintances at a public health center in San Pedro Sula, Honduras / Fatores de risco relacionados ao uso de drogas ilegais, perspectiva crítica de familiares e pessoas próximas, em um centro da saúde público em San Pedro Sula, Honduras  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Spanish Abstract in portuguese São apresentados, aqui, dados quantitativos de um estudo multicêntrico, multimétodos, de corte transversal, realizado em um centro de saúde pública em San Pedro Sula, Honduras. O objetivo foi descrever a perspectiva crítica dos membros da família ou pessoas que se sentem afetadas por terem alguém pr [...] óximo que usa ou usou drogas ilegais, em relação aos fatores de risco. Os dados foram coletados através de questionário aplicado em 100 indivíduos. A maioria era composta por mulheres pobres, com pouca escolaridade. Os consumidores eram majoritariamente varões, com idade média de 23,3 anos. A droga mais utilizada foi a maconha (78%), seguida por crack/cocaína (72%), cola/inalantes (27%), alucinógenos (ecstasy/LSD) (3%), anfetaminas/estimulantes (1%), heroína (1%). Entre os fatores de risco identificados estão: experiência anterior com álcool/fumo, ter amigos/amigas que usam drogas, falta de conhecimento, baixa autoestima, idade, entre outros fatores pessoais, familiares e sociais. Em conclusão, deve-se reforçar a prevenção e proteção. Abstract in spanish En este estudio, se presentan datos cuantitativos del estudio multicéntrico, multimétodos, de corte transversal realizado en un centro de salud público en San Pedro Sula, en Honduras. Su objetivo es describir la perspectiva crítica que tienen los familiares o personas, que se consideran afectadas po [...] r tener a alguien cercano que usa o ha usado drogas ilegales, con relación a factores de riesgo. Los datos se obtuvieron mediante una encuesta con 100 entrevistados. La mayor parte de las personas informantes eran mujeres pobres con baja escolaridad. Los consumidores eran en su mayoría hombres con edad promedio de 23,3 años. La droga más usada fue la marihuana (78%) seguida de crack/cocaína (72%), pegamento/inhalantes (27%), alucinógenos (éxtasis/LSD) (3%), anfetaminas/estimulantes (1%) y heroína (1%). Los factores de riesgo identificados fueron la experiencia previa con alcohol/tabaco, el tener amigos/amigas que usan drogas, la falta de conocimiento, la baja autoestima , la edad, entre otros factores personales, familiares y sociales. Se concluye que es necesario fortalecer las medidas de prevención y protección. Abstract in english This article presents quantitative data from a multicenter, cross-sectional study, which was performed at a public health center in San Pedro Sula, Honduras, using multiple methods. The objective of the study was to describe the critical perspective of people who reported being affected by their rel [...] ationship with an illicit drug user (relative or acquaintance) in terms of risk factors. Data collection was performed using 100 questionnaires. Most participants were women with low education levels. Drug users were mostly men, with an average age of 23.3 years. The most consumed drug was marijuana (78%), followed by crack/cocaine (72%), glue/inhalants (27%), hallucinogens (ecstasy/LSD) (3%), amphetamines/stimulants (1%), and heroin (1%). The identified risk factors include: previous experience with alcohol/tobacco, having friends who use drugs, lack of information, low self-esteem, age, and other personal, family and social factors. In conclusion, prevention and protection should be reinforced.

Rodríguez Funes, Gladys Magdalena; Brands, Bruna; Adlaf, Edward; Giesbrecht, Norman; Simich, Laura; Wright, Maria da Gloria Miotto.

42

Factores de riesgo relacionados al uso de drogas ilegales: perspectiva crítica de familiares y personas cercanas en un centro de salud público en San Pedro Sula, Honduras Fatores de risco relacionados ao uso de drogas ilegais, perspectiva crítica de familiares e pessoas próximas, em um centro da saúde público em San Pedro Sula, Honduras Risk factors related to the use of illegal drugs: the critial perspective of drug users' relatives and acquaintances at a public health center in San Pedro Sula, Honduras  

Directory of Open Access Journals (Sweden)

Full Text Available En este estudio, se presentan datos cuantitativos del estudio multicéntrico, multimétodos, de corte transversal realizado en un centro de salud público en San Pedro Sula, en Honduras. Su objetivo es describir la perspectiva crítica que tienen los familiares o personas, que se consideran afectadas por tener a alguien cercano que usa o ha usado drogas ilegales, con relación a factores de riesgo. Los datos se obtuvieron mediante una encuesta con 100 entrevistados. La mayor parte de las personas informantes eran mujeres pobres con baja escolaridad. Los consumidores eran en su mayoría hombres con edad promedio de 23,3 años. La droga más usada fue la marihuana (78% seguida de crack/cocaína (72%, pegamento/inhalantes (27%, alucinógenos (éxtasis/LSD (3%, anfetaminas/estimulantes (1% y heroína (1%. Los factores de riesgo identificados fueron la experiencia previa con alcohol/tabaco, el tener amigos/amigas que usan drogas, la falta de conocimiento, la baja autoestima , la edad, entre otros factores personales, familiares y sociales. Se concluye que es necesario fortalecer las medidas de prevención y protección.São apresentados, aqui, dados quantitativos de um estudo multicêntrico, multimétodos, de corte transversal, realizado em um centro de saúde pública em San Pedro Sula, Honduras. O objetivo foi descrever a perspectiva crítica dos membros da família ou pessoas que se sentem afetadas por terem alguém próximo que usa ou usou drogas ilegais, em relação aos fatores de risco. Os dados foram coletados através de questionário aplicado em 100 indivíduos. A maioria era composta por mulheres pobres, com pouca escolaridade. Os consumidores eram majoritariamente varões, com idade média de 23,3 anos. A droga mais utilizada foi a maconha (78%, seguida por crack/cocaína (72%, cola/inalantes (27%, alucinógenos (ecstasy/LSD (3%, anfetaminas/estimulantes (1%, heroína (1%. Entre os fatores de risco identificados estão: experiência anterior com álcool/fumo, ter amigos/amigas que usam drogas, falta de conhecimento, baixa autoestima, idade, entre outros fatores pessoais, familiares e sociais. Em conclusão, deve-se reforçar a prevenção e proteção.This article presents quantitative data from a multicenter, cross-sectional study, which was performed at a public health center in San Pedro Sula, Honduras, using multiple methods. The objective of the study was to describe the critical perspective of people who reported being affected by their relationship with an illicit drug user (relative or acquaintance in terms of risk factors. Data collection was performed using 100 questionnaires. Most participants were women with low education levels. Drug users were mostly men, with an average age of 23.3 years. The most consumed drug was marijuana (78%, followed by crack/cocaine (72%, glue/inhalants (27%, hallucinogens (ecstasy/LSD (3%, amphetamines/stimulants (1%, and heroin (1%. The identified risk factors include: previous experience with alcohol/tobacco, having friends who use drugs, lack of information, low self-esteem, age, and other personal, family and social factors. In conclusion, prevention and protection should be reinforced.

Gladys Magdalena Rodríguez Funes

2009-01-01

43

SAN CARLOS APACHE PAPERS.  

Science.gov (United States)

THE FIRST SECTION OF THIS BOOK COVERS THE HISTORICAL AND CULTURAL BACKGROUND OF THE SAN CARLOS APACHE INDIANS, AS WELL AS AN HISTORICAL SKETCH OF THE DEVELOPMENT OF THEIR FORMAL EDUCATIONAL SYSTEM. THE SECOND SECTION IS DEVOTED TO THE PROBLEMS OF TEACHERS OF THE INDIAN CHILDREN IN GLOBE AND SAN CARLOS, ARIZONA. IT IS DIVIDED INTO THREE PARTS--(1)…

ROESSEL, ROBERT A., JR.

44

Las cabeceras del río Grande de San Juan y sus relaciones con áreas vecinas durante los últimos momentos del desarrollo cultural prehispánico / The upstream of Río Grande de San Juan and their relations with adjacent areas during the last moment of cultural prehispanic development  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish Se presentan los resultados de los trabajos arqueológicos desarrollados por los autores en las cabeceras del Río Grande de San Juan (Provincia de Jujuy, Argentina). Estas recientes investigaciones se han realizado en los sitios Abra de Lagunas, en la zona del río Orosmayo, y en Guayatayoc y Pajchela [...] , en las cercanías de la localidad de Cusi Cusi. Se analizan indicadores tales como emplazamiento y localización de sitios, patrón de asentamiento, construcciones agrícola-ganaderas, elementos relacionados con actividades rituales y/o sociales (menhires, montículos, entre otros), presencia de "hornos" (chullpas) de planta circular o elíptica y techo en falsa bóveda, alfarería y artefactos elaborados en piedra, madera y hueso. Asimismo, se realiza un análisis comparativo de estos indicadores con otros de regiones aledañas, especialmente curso medio del río Grande de San Juan, laguna de Vilama, Yavi, Pozuelos, Rinconada, Cochinoca, Casabindo y Susques (Provincia de Jujuy) y sur Lípez (Bolivia). Tanto en los rasgos ambientales de la región como en los contextos culturales recuperados, se observaron características propias, hecho que permite plantear, a modo de hipótesis, una relativa particularidad cultural, pero también algunas similitudes con regiones vecinas. Finalmente, se exponen los avances alcanzados respecto de esta problemática, concluyendo que durante el Período Tardío-Inca, la región de las cabeceras del río Grande de San Juan no sólo habría sido una zona de paso, sino también una región con asentamientos estables de cierta envergadura y ocupación permanente. Abstract in english Conclusions of archaeological studies at the upstream of Río Grande de San Juan (Province of Jujuy, Argentina) are stated. Studies dealt here, were done in Abra de Lagunas, Orosmayo river area, in Guayatayoc and Pajchela, nearby Cusi Cusi. Sites emplacement and location, settlement pattern, agricult [...] ural and cattle-raising constructions, elements related with ritual and/or social activities like menhirs, hillocks among other things, "hornos" (chullpas) with circular or elliptical base and roof in false vault, pottery and pots in stone, wood and bone were analyzed. Later, a comparative analysis of these indicators with those of surrounding districts was made, specifically medium stream of Río Grande de San Juan, lake of Vilama, Yavi, Pozuelos, Rinconada, Cochinoca, Casabindo and Susques (Province of Jujuy) and Lípez (south of Bolivia). Typical characteristics were observed so much in the environmental features of the region as in the the cultured recovered contexts. These facts bring up as a hypothesis that in this region there is a relative cultural singularity, though it has some similitudes with the nearby areas. It is concluded that during the Late-Inca Period, the headwaters of Río Grande de San Juan could have been not only an emplacement on the way but also one of permanent occupation.

De Feo, Carlos Alberto; Fernández, Ana María; Raviña, María Gabriela.

45

Prenatal care according to the NOM-007 norm, which relates to maternal morbidity in a health center in San Luis Potosí (2008) / Prenatal care according to the NOM-007 norm, which relates to maternal morbidity in a health center in San Luis Potosí (2008)  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish Abstract in spanish RESUMEN La mortalidad materno-infantil refleja el grado de desarrollo social y económico de un país, por lo que la salud reproductiva es una prioridad sanitaria; su prevención depende directamente de la cobertura y calidad de los servicios de salud. OBJETIVOS: evaluar el apego de la atención prenata [...] l a la NOM 007 y su correlación con la morbilidad materna en una unidad de salud de San Luis Potosí, México. METODOLOGIA:estudio descriptivo, correlacional y cuantitativo, cuya unidad de análisis fueron 571 expedientes de embarazadas atendidas durante el 2008. Para probar la hipótesis se utilizó r de Pearson, p = 0,05. RESULTADOS: el rango de edad osciló entre 13 y 43 años, 37,1% adolescentes; 44,3% se incorporó a la atención en el segundo trimestre del embarazo; 38,2% cumplió con mínimo cinco consultas; 46,4% presentó morbilidad, con la infección urinaria como la más común (224 casos). El apego de la atención prenatal fue adecuado en 2,6% de los casos, según las acciones efectuadas; las de promoción de salud fueron las menos realizadas. CONCLUSION: el nivel de apego de la atención prenatal a la NOM 007 se calificó inadecuado en 97,4%, coincidiendo con morbilidad materna (87,5 -100%); esto podría relacionarse con consultas más frecuentes para algunas mujeres, el ingreso tardío a la atención y la consecuente reducción del tiempo para la realización de las acciones. La correlación resultó contraria a lo esperado, pues a mayor apego de la atención prenatal a la norma, mayor morbilidad materna se presentó (r = 0,318, p Abstract in english Mother and child mortality reflects the level of social and economic development of a country; therefore, reproductive health is a sanitary priority. Mortality prevention depends directly on the coverage and quality of health services. OBJECTIVE: to assess the compliance of prenatal care with the NO [...] M 007 norm and its correlation with maternal morbidity in a health center located in San Luis Potosí, Mexico. METHOGOLOGY: a descriptive, correlational, and quantitative study in which the units of analysis were the medical records of 571 pregnant women cared for during 2008. In order to prove the hypothesis, Pearson?s r was used. The p value was ? 0.05. RESULTS: ages ranged from 13 to 43 years. Additionally, 37.1% of the patients were teenagers and 44.3% began receiving attention during the second trimester of their pregnancy; 38.2% attended at least five medical appointments, and 46.4% had morbidity. For the latter group, urinary infection was the most common condition (224 cases). Prenatal attention was adequate in 2.6% of the cases according to the actions performed. Health promotion actions were the least frequent. CONCLUSION: the level of compliance with the NOM 007 norm for prenatal care was considered inadequate in 97.4% of the cases and was consistent with maternal morbidity (87.5-100%). This could be related to more frequent appointments for some women and with late treatment, which resulted in less time to perform said actions. Contrary to expectations, greater compliance meant higher maternal morbidity (r = 0.318, p

Vega M, Rosa I.; Barron, Alicia G.; Acosta R, Lucila P..

46

Relative determination of the alkaloid metabolites of Er Miao San in rat urine by LC-MS/MS and its application to pharmacokinetics.  

Science.gov (United States)

In the present study, five metabolites of Cortex Phellodendri Chinensis, an important herbal drug, were identified using liquid chromatography multi-stage tandem mass spectrometric techniques (LC-MS(n)). A sensitive and rapid high-performance liquid chromatographic tandem mass spectrometry (LC-MS/MS) method was developed for the quantitation of the five metabolites, utilizing chlorobenzylidine as the internal standard in rat urine. Urine samples were precipitated with acetonitrile. Chromatographic separation was achieved on a Waters C18 analytical column. Detection was performed by a multiple reaction monitoring (MRM) mode via an electrospray ionization (ESI) source operating in the positive ionization mode. The method was linear over the concentration range of 0.05-1.00c for all components. The intra- and inter-day precision values were less than 14.6% and the deviations ranged from -4.4 to 13.8%. The recoveries at three levels were more than 73.7%. The fully validated method was used to determine the metabolites amount in rat urine to investigate the changes caused by coupling with Atractylodes lancea in Er Miao San preparation on metabolism. PMID:24508675

Yan, Fei; He, Huiwen; Yan, Rui

2014-03-01

47

San Salvador Microbial Observatory  

Science.gov (United States)

This web site is home of the San Salvador Microbial Observatory, a project investigating the anhydrophilic, halotolerant microbial mats of San Salvador, Bahamas. This project has been developed to address the influence water availability has on structural diversification, community composition, production, and carbon sequestration in microbial mats. The web site includes general information about the project, a research description plan, an introduction to microbial mats, links to other microbial observatories and interesting sites, and a collection of photos. This is a helpful resource for those investigating microbial mat communities.

Steppe, Tim; Institute Of Marine Sciences, University O.

48

The San Andreas Fault 'Supersite' (Invited)  

Science.gov (United States)

An expanded and permanent Supersite has been proposed to the Committee on Earth Observation Satellites (CEOS) for the San Andreas Fault system, based upon the successful initial Group on Earth Observations (GEO) Geohazard Supersite for the Los Angeles region from 2009-2013. As justification for the comprehensive San Andreas Supersite, consider the earthquake history of California, in particular the devastating M 7.8 San Francisco earthquake of 1906, which occurred along the San Andreas Fault, as did an earthquake of similar magnitude in 1857 in southern California. Los Angeles was only a small town then, but now the risk exposure has increased for both of California's megacities. Between the San Francisco and Los Angeles urban areas lies a section of the San Andreas Fault known to creep continually, so it has relatively less earthquake hazard. It used to be thought of as capable of stopping earthquakes entering it from either direction. Transitional behavior at either end of the creeping section is known to display a full range of seismic to aseismic slip events and accompanying seismicity and strain transient events. Because the occurrence of creep events is well documented by instrumental networks such as CISN and PBO, the San Andreas Supersite can be expected to be especially effective. A good baseline level of geodetic data regarding past events and strain accumulation and release exists. Many prior publications regarding the occurrence of geophysical phenomena along the San Andreas Fault system mean that in order to make novel contributions, state-of-the-art science will be required within this Supersite region. In more recent years, the 1989 Loma Prieta earthquake struck adjacent to the San Andreas Fault and caused the most damage along the western side of the San Francisco Bay Area. More recently, the concern has focused on the potential for future events along the Hayward Fault along the eastern side of San Francisco Bay. In Southern California, earthquakes struck in 1992 (Landers), 1994 (Northridge) and 1999 (Hector Mine) as well as the 2010 El Mayor - Cucapah (EM-C) earthquake (just south of the US-Mexico border). Of these four notable events, all produced extensive surface faulting except for the 1994 Northridge event, which was close to the Los Angeles urban area on a buried thrust fault. Northridge caused by far the most destruction, topping $20B (US) and resulting in 57 fatalities due to its location under an urban area. The Landers, Hector Mine and EM-C events occurred in desert areas away from major urban centers, and each proved to be a new and unique test-bed for making rapid progress in earthquake science and creative use of geodetic imagery. InSAR studies were linked to GPS deformation and mapping of surface ruptures and seismicity in a series of important papers about these earthquakes. The hazard in California remains extremely high, with tens of millions of people living in close proximity to the San Andreas Fault system as it runs past both San Francisco and Los Angeles. Dense in-situ networks of seismic and geodetic instruments are continually used for research and earthquake monitoring, as well as development of an earthquake early warning capability. Principles of peer review from funding agencies and open data availability will be observed for all data. For all of these reasons, the San Andreas Fault system is highly appropriate for consideration as a world-class permanent Supersite in the GEO framework.

Hudnut, K. W.

2013-12-01

49

Linear elastic fracture mechanics limits of validity. Mecanique de la rupture en elasticite lineaire limites de validite  

Energy Technology Data Exchange (ETDEWEB)

Making the hypothesis that the behaviour of the material is linear elastic, the stresses and the strains at the tip of a crack are perfectly known. Their level is proportional to the stress intensity factor K, which also allows to calculate the crack tip opening displacement. At equilibrium the strain energy release rate G for a unit virtual growth of the crack is equal to twice the surface energy. This strain energy release rate can also be calculated using the Rice-Cherepanov integral J, and it is related to the factor K. The crack propagation can then be predicted when either K, or G, or J reach a critical value which can be measured in the laboratory and transferable to a structure. However plastic deformation and damage which take place at the crack tip in real materials perturb the ideal linear elastic solutions. It remains possible to use them under the condition that the size of the specimen or of the structure sufficiently confines the plastic zone. This is the easier the larger the yield stress. In fatigue or in stress corrosion the relatively low load levels allow usually to fulfill the conditions for small scale yielding. On the other hand if the thickness is not large enough, the fracture toughness is thickness dependent and furthermore increases as the crack advances, in that case in a stable fashion. The failure prediction is then more complicated. The determination of the stress intensity factor must also take into account residual stress which introduce some uncertainty in the analysis. (author). 9 figs.

Francois, D. (Ecole Centrale des Arts et Manufactures, 92 - Chatenay-Malabry (France))

1993-01-01

50

Remembering San Diego  

International Nuclear Information System (INIS)

After 6 years of existence the ITER EDA project in San Diego, USA, was terminated by desition of the US Congress. This article describes how nice it was for everybody as long as it lasted and how sad it is now

1999-07-01

51

San Jose, Costa Rica  

Science.gov (United States)

San Jose, capital city of Costa Rica, fills the valley between two steep mountain ranges. In this image made from data collected by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument on NASA's Terra satellite, visible, shortwave, and near-infrared wavelengths of light that the sensor observed have been combined to produce a false-color version of the scene in which vegetation is red, urban areas are silvery gray, water is dark blue, and clouds are white. The image was captured on February 8, 2007. San Jose is in the center of the image. The Rio Torres winds through downtown San Jose. Cartago, the much smaller colonial capital, sits in the lower right corner, while the city of Alajuela appears across the river, northwest of San Jose. The cities' manmade surfaces contrast sharply with the lushly vegetated landscape surrounding the city. Greenhouses are common in the region, and their glass roofs may be the brilliant white spots around the outer edges the cities. The long, straight runway of the Tobias Bolanos International Airport is visible as a dark line southeast of Alajuela. The landscape around the two cities shown here is rugged. Steep mountain peaks cast dark shadows across their leeward slopes. Patches of dark red vegetation on the mountains north of San Jose may be rainforest. Coffee plantations also cover the slopes of the mountains around the city. February is the dry season in Costa Rica. During the rainy season, from about April to November, clouds usually block the satellite's view of this tropical location. NASA image created by Jesse Allen, using data provided courtesy of Asaf Ullah and Tim Gubbels, SERVIR project.

2007-01-01

52

Fossilization of nanobes studied by transmission electron microscopy and constraints related to their population - recent and late quaternary reefbanks (San Salvador Island, the Bahamas; Heron Island, Australia)  

Science.gov (United States)

SEM analyses of rocks from Blow Hole Cave and The Gulf sections (San Salvador Island, Bahamas) found that ca 90-95% of peloids (and minor parts of other particles and cements) are substantially rebuilt into tiny corpuscles of ovoid, rotund cylindrical or slightly bent shapes (50-80 × 60-120 nm). About 20-30% of them form short and branched chains. These fabrics resemble `accumulations of ant eggs', have 40-60% fine porosity, correspond to better morpho-definitions of nanobes (cons. by R.L. Folk, 2002), and put a new light on micritization processes. The rocks strongly rebuilt by nanobes negatively correlate with magnetic susceptibility, but slightly contribute to NGR (uranium, gamma-ray spectrometry). In spite of strongly negative correlation to magnetic horizons, the nanobes are also present there, but to a lesser extent. The suspensions with nanobes (extracted by pump from the pores of rocks preserved in glutaraldehyde) exhibit a variety of preservation stages - from amorphous organics to completely fossilized corpuscles (studied by TEM). Early stages of fossilization are characterized by a gradually increasing amount of very fine crystalline inclusions, which are triangular to tetragonal in shape, and 3-15 nm long (mean size ˜ 6 nm). The TEM diffractograms provided data about face-centered cubic structures of B1 type (NaCl-like), with strongest 2nd and 3rd reflections on 0.240 and 0.170 nm and mean lattice parameter of 0.4813 nm. The substance was clearly identified as CaO. The difference to 0.4802 nm (ICDD data for pure CaO) is explained by effects of impurities Sr (+) > Fe, Mn (-). The number of CaO inclusions fluctuates from a few to 5 × 104 / ? {m3}. The CaO nucleation is possible in natural necrotic high-pH low-Eh organic coagulates; but presence of glutaraldehyde can facilitate the process. Other fossilization stages show unstable amorphous to crystalline calcium carbonate, homogeneous aragonite and calcite, and calcite replacing aragonite along sharp boundaries. The X-ray diffraction data suggest that calcite prevails. The massive nanobe population corresponds to early stages of emergence of banks (according to diagenetic and microbial successions). The short-term nanobe bloom had to be concurrent with early fungal growth in corroded rock micropores. However, the residual nanobe populations survived a die off of the early bloom of nannobes and are still alive (˜ 3 × 103 /{mm3}). A small number of nanobes are spread by endolithic cyanobacteria even in situations, that are not favorable for expansion of nanobe populations (examples from the Heron Island, Australia). / Project A3013209 "Weathering products".

Hladil, J.; Gemperle, A.; Carew, J. L.; Bosak, P.; Slavik, L.; Pruner, P.; Charvatova, K.; Mylroie, J. E.; Jell, J. S.

2003-04-01

53

Gas-Oil Relative Permeability and Residual Oil Saturation as Related to Displacement Instability and Dimensionless Numbers Étude de la perméabilité relative gaz-huile et de la saturation en huile résiduelle dans le cas d’une instabilité de déplacement et des nombres sans dimension s’y rapportant  

Directory of Open Access Journals (Sweden)

Full Text Available Displacement experiments of the gas-oil system are performed on long core scale models by varying the petrophysical properties and flowing conditions. Experiments are conducted in situations where capillary, gravity and viscous forces are comparable. From oil production history and picture analysis, the threshold for the stability is determined. The experimental findings are comparable to the results of a gradient percolation theory. The effect of destabilized front velocity on relative permeability and residual saturation is investigated. The relative permeabilities determined by using analytical and numerical approaches indicate that higher displacement velocity leads to a higher gas relative permeability and lower oil relative permeability. The remaining oil saturation is found to be much higher for displacement velocity above the stabilized criterion. Displacement morphology including the average remaining oil saturation is then described using dimensionless groups expressed as Bond and capillary number. Experimentally determined remaining oil saturation shows a direct and inverse relation to the capillary and Bond number respectively. Hence, a combined dimensionless group has been proposed to generalize the estimation of remaining and residual oil saturations under the range of dimensionless numbers studied here. Des expériences de déplacement gaz-huile ont été réalisées sur des modèles mis à l’échelle de carottes de grande longueur en faisant varier les propriétés pétrophysiques et les conditions d’écoulement. Pour ces expériences, les forces en présence, capillaires, gravitaires et visqueuses, sont comparables. Le seuil de stabilité est déterminé à partir de l’historique de production et de l’analyse d’images. Les résultats des expériences sont comparables aux conclusions de la théorie de la percolation en gradient. On étudie ensuite l’effet de l’instabilité du front de déplacement sur la perméabilité relative et la saturation résiduelle. Les perméabilités relatives déterminées par des approches analytiques et numériques indiquent qu’une plus grande vitesse de déplacement engendre une plus grande perméabilité relative au gaz et une plus faible perméabilité relative à l’huile. Les résultats indiquent que la saturation en huile à la fin est très supérieure lorsque la vitesse de déplacement se situe au-dessus du critère de stabilité. Les caractéristiques du déplacement, notamment la saturation moyenne en huile en fin de déplacement, sont ensuite décrites à l’aide de groupements sans dimension expressément le nombre de Bond et le nombre capillaire. La saturation en huile en fin de déplacement déterminée expérimentalement s’exprime respectivement par une relation directe avec le nombre capillaire et inverse avec le nombre de Bond. En conséquence, un groupement sans dimension combiné a été proposé afin de généraliser l’estimation de la saturation en fin de déplacement et résiduelle en huile dans la limite des nombres sans dimension étudiés ici.

Rostami B.

2009-11-01

54

Theoretical and experimental study of a non-linear disintegration process for a langmuir wave; Etude theorique et experimental d'un processus non lineaire de desintegration d'une onde de langmuir  

Energy Technology Data Exchange (ETDEWEB)

Using the Vlasov equation we calculate and discuss non-linear coupling equations between three electronic plasma waves (Langmuir waves) which propagate in a cylindrical plasma column confined by a strong magnetic field. We study, in the experimental device EOS, along the magnetic field, the disintegration of a Langmuir wave excited in the plasma column by means of an antenna. Space structure measurements for various waves show that the resonance conditions (selection rules) are satisfied. The measured disintegration threshold is in agreement with the theoretical value within 30 per cent and shows that this non linear mechanism appears when the oscillating density to the mean density ratio is about 10{sup -3} to 10{sup -2}. The variation of the spatial growth rate as a function of the amplitude of the disintegrated wave shows that the resulting waves are correlated in groups of three along the magnetic field even though the disintegrating spectrum appears in a wide frequency band. (author) [French] A partir de l'equation de Vlasov nous calculons et discutons les equations de couplage non lineaire entre trois ondes plasma electroniques (ou ondes de Langmuir) qui se propagent dans une colonne de plasma cylindrique confinee par un champ magnetique de forte intensite. Nous etudions, dans le dispositif experimental EOS, le long du champ magnetique, la desintegration d'une onde de Langmuir excitee dans la colonne de plasma a l'aide d'une antenne. La mesure de la structure spatiale des differentes ondes montre que l'ensemble des conditions de resonance (ou regles de selection) sont satisfaites. Le seuil de desintegration mesure est en accord avec la valeur theorique a 30 pour cent pres et montre que ce mecanisme non lineaire apparait lorsque le rapport de la densite oscillante a la densite moyenne est de l'ordre de 10{sup -3} a 10{sup -2}. La variation du taux de croissance spatiale en fonction de l'amplitude de l'onde qui se desintegre montre que les ondes restent trois par trois fortement correlees le long du champ magnetique bien que le spectre de desintegration apparaisse dans une large bande de frequences. (auteur)

Perulli, M. [Commissariat a l' Energie Atomique, Fontenay-aux-Roses (France). Centre d' Etudes Nucleaires

1968-07-01

55

San Joaquin-Tulare Conjunctive Use Model: Detailed model description  

Energy Technology Data Exchange (ETDEWEB)

The San Joaquin - Tulare Conjunctive Use Model (SANTUCM) was originally developed for the San Joaquin Valley Drainage Program to evaluate possible scenarios for long-term management of drainage and drainage - related problems in the western San Joaquin Valley of California. A unique aspect of this model is its coupling of a surface water delivery and reservoir operations model with a regional groundwater model. The model also performs salinity balances along the tributaries and along the main stem of the San Joaquin River to allow assessment of compliance with State Water Resources Control Board water quality objectives for the San Joaquin River. This document is a detailed description of the various subroutines, variables and parameters used in the model.

Quinn, N.W.T.

1992-03-01

56

San Francisco disaster  

Science.gov (United States)

A silent film from May of 1906 that seeks to simulate the San Francisco fire and earthquake using a small-scale model of the city. The film's realism and accuracy are questionable-the flames reach unrealistic heights, and the real fire was more scattered than the flame shown-but it marks an early attempt to visualize and recreate the disaster. The film is available in Real Media, QuickTime and MPEG format.

Company, American M.

57

Perfil local y agroindustria palmera: explorando el caso de San Alberto y San Martín (Cesar) / Local Profile and Palm Tree Agro-Industry: Exploring the case of San Albert o and San Martin (Cesar) / Profil local et agro-industrie de la palmiculture: exploration du cas de San Alberto et San Martín (Cesar)  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish Abstract in spanish Este artículo establece el perfil municipal de dos localidades en Colombia tradicionalmente palmeras: San Alberto y San Martín (Cesar). En particular, se estudian indicadores socioeconómicos, finanzas públicas y dinámica del conflicto armado en ambos municipios durante los últimos diez años. Se enco [...] ntró que San Alberto, con mayor actividad palmera que San Martín, tiene menores niveles de pobreza y mejores finanzas públicas. Sin embargo, en relación a educación y salud, ambos municipios presentan estándares precarios. En cuanto a seguridad y conflicto armado, se estableció que el número de secuestros y homicidios se redujeron en ambas localidades, pero la población civil sigue siendo víctima de desplazamiento forzado. Abstract in english This article establishes the municipal profile of two places in Colombia which are traditionally known for their palm tree production: San Alberto and San Martin (Cesar). Socioeconomic indicators, public finance, and armed conflict dynamics during the last ten years in both places are studied in par [...] ticular. It was found out that San Alberto, with greater palm tree activity than San Martin, has lower poverty levels and better public finance. Nevertheless, both municipalities show fragile standards in relation to education and health. As for safety and armed conflict, it was determined that the number of kidnappings and murders decreased in both places, but civilians are still victims of forced displacement.

Hurtado, Mónica; Hernández-Salazar, Giovanni Andrés.

58

78 FR 34895 - Safety Zone; San Francisco Independence Day Fireworks Display, San Francisco Bay, San Francisco, CA  

Science.gov (United States)

...Coast Guard 33 CFR Part 165 [Docket No. USCG-2013-0347] Safety Zone; San Francisco Independence Day Fireworks Display, San Francisco Bay, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION: Notice of enforcement of...

2013-06-11

59

Status of the San Onofre neutrino oscillation experiment  

International Nuclear Information System (INIS)

The San Onofre experiment is designed to investigate neutrino oscillations in the parameter space suggested by the atmospheric neutrino problem. A liquid-scintillator-based 12-ton detector will be installed at 650 m from the two units of the San Onofre power reactor. For the detection of the anti ve-induced inverse beta decay reaction a novel four-fold coincidence method is used allowing effective suppression of background at the relatively low shallow depth of 25 mwe. We report on the experimental method and demonstrate its feasibility by presenting results from recent test experiments performed with a prototype detector in the Tendon Gallery of the San Onofre Unit 2 reactor

1993-10-01

60

SANS study of reactor pressure vessel steel after irradiation  

International Nuclear Information System (INIS)

The irradiation induced defects of irradiated Reactor Pressure Vessel(RPV) steel were investigated by small angle neutron scattering. The degradation of the mechanical properties of RPV steels during irradiation in a nuclear power plant is closely related to the irradiation induced defects. The RPV steel was irradiated at HANARO reactor in KAERI. The small angle neutron scattering experiments were performed at SANS instrument in HANARO reactor. Both unirradiated and irradiated RPV steels were measured and the SANS data of both steels were compared. The nano sized irradiation induced defects were quantitatively analyzed by SANS

2005-04-11

 
 
 
 
61

“Teresa San Román, antropóloga”  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Después publicar de la entrevista a Ramón Valdés (v. Perifèria 5), continúa la colaboración de la revista con el Proyecto Entrevistas3. En esta ocasión los alumnos han entrevistado a la Catedrática de la UAB, Teresa San Román Espinosa. La entrevista tuvo lugar el pasado 25 de junio de 2007 en su despacho del departamento, en un ambiente muy cercano y distendido, dando como resultado un extenso pero a su vez ameno repaso por el recorrido vital e intelectual de una figura de referencia...

2007-01-01

62

Teresa San Roman, antropologa  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Después publicar de la entrevista a Ramón Valdés (v. Perifèria 5), continúa la colaboración de la revista con el Proyecto Entrevistas3. En esta ocasión los alumnos han entrevistado a la Catedrática de la UAB, Teresa San Román Espinosa. La entrevista tuvo lugar el pasado 25 de junio de 2007 en su despacho del departamento, en un ambiente muy cercano y distendido, dando como resultado un extenso pero a su vez ameno repaso por el recorrido vital e intelectual de una figura de referencia...

2007-01-01

63

San Kamphaeng geothermal field  

Energy Technology Data Exchange (ETDEWEB)

San Kamphaeng geothermal field is one of the most promising and extensively studied areas in Thailand. Geological studies at scale 1/10,000 indicate that the area is composed of the oldest Mae Tha Formation of Carboniferous, Kiu Lom Formation of Middle Permian, granites and andesites of triassic and alluvial deposits. The area is a horst-and-graben type bordered by normal faults, the Huai Pong fault and the Huai Mae Koen fault, trending in the NNW-SSE direction. Chemical alteration zones of outcrops indicate that hydrothermal solution causing the alteration is possibly and intermediate-to-acidic liquid of less than 200{degree}C temperature. Seismic studies indicate that the faults along the hot spring area and adjacent are still active and the geothermal fluids circulate and upflow along these conduits to the surface. In conclusion, the potential geothermal area in the San Kamphaeng geothermal system is confined to Ban Pong Nok District, where actual manifestations are found on the surface and N-S and NW-SE trending faults are perceived.

Thienprasert, Amnuaychai; Raksaskulwong, Manop; Surinkum, Adichat

1988-11-10

64

San Andreas Fault tremor and retrograde metamorphism  

Science.gov (United States)

Tectonic tremor is an enigmatic low-frequency seismic phenomenon mainly observed in subduction zones, but also documented along the deep extension of the central San Andreas Fault. The physical mechanisms behind this unusual seismic event are not yet determined for any tectonic setting; however, low effective stress conditions arising from metamorphic fluid production are commonly inferred for subduction-related tremor. We investigate the petrologic conditions at which the San Andreas tectonic tremor is inferred to occur through calculations of the pressure - temperature - time evolution of stable mineral assemblages and their water content in the dominant lithologies of the Franciscan Complex. We find that tremor locations around Parkfield and Cholame are currently experiencing retrograde metamorphic conditions. Within the temperature-depth conditions of observed tremor activity, at approximately 500°C and 20 km depth, several mineralogical transitions may occur in cooling greywacke and mafic rocks, leading to localised, significant removal of free water and an associated volume decrease. This indicates that, contrary to subduction-related tremor, tremor on the San Andreas Fault is not linked to prograde, crustal metamorphic fluid production within the fault zone; rather it might be related to mantle-derived fluids from below the tremor zone, and/or fault zone weakening that occurs as phyllosilicates replace more competent and granular mineral phases.

Fagereng, Åke; Diener, Johann F. A.

2011-12-01

65

Brechas intraclásticas (tsunamitas?) en el tope de la Formación San Juan (Darriwiliano), Precordillera de San Juan, Argentina: microfacies y Conodontes / Intraclastic breccias (tsunamites) on the top of San Juan Formation (Darriwillian), San Juan Precordillera, Argentina: microfacies and conodonts  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish Se describen por primera vez niveles de brechas intraclásticas en el último metro de la Formación San Juan, Precordillera Central (San Juan-Argentina). Las características microfaciales, relaciones litofaciales y las variaciones en las poblaciones de conodontes asociadas a las mismas permiten interp [...] retarlas como depósitos producidos por eventos erosivos de gran magnitud que habrían sido generados por tsunamis o tormentas fuera de serie que afectaron la rampa carbonática durante el Darriwiliano medio. Abstract in english This paper describes for the first time intraclastic breccias beds in the last meter of the San Juan Formation, Central Precordillera (San Juan, Argentina). The microfacial features, lithofacial relations and variations in conodont population linked with the conglomerate allow us to defineinterpreti [...] ng that these deposits were produced by a great eroding event, possibly generated by a tsunami or storms out of series which has affected the carbonate ramp during the Middle Darriwilian.

Mestre, Ana.

66

San Francisco Historical Photograph Collection  

Science.gov (United States)

In the 1936 film, "San Francisco" Jeannette MacDonald sings the film's title song, which of course includes the Gus Kahn-penned lyric "San Francisco, welcome me home again/I'm not at home to go roaming no more." For those who might be pining for Baghdad by the Bay (or for images from the infamous earthquake in 1906), this online collection from the San Francisco Public Library will be most welcome. All told, the San Francisco Historical Photograph Collection contains more than 250,000 photographs of San Francisco and California, although not all of these photographs are available online here. Visitors should begin their voyage through these images by using their search engine, which allows them to search by photographer, subject index, or by date. Perhaps the most novel way to search the images is to look through the photos by using an interactive map of the entire city. Here visitors can find photographs of the historic Moulin Rouge nightclub in the historic Barbary Coast area, or move on over to Sutro Heights over on the Pacific Ocean. For those who might be feeling a bit less adventurous, there are a number of thematic collections, including "Picture This: Family Photographs of Everyday San Francisco".

67

Tsunami Hazards in San Francisco Bay  

Science.gov (United States)

A prerequisite to probabilistic hazard assessment is a historic event database and identification of all potential sources. We review published and unpublished material to compile a history of tsunami events, peak tsunami heights and tsunami source regions for San Francisco Bay. Since 1850, 51 credible tsunamis have been recorded or observed within the San Francisco Bay area, all but 6 teletsunamis. Only the tsunamis generated by the 1960 Chile earthquake and the 1964 Alaska earthquake caused damage in San Francisco Bay. Both events are characterized by long duration (12 hours) short period oscillations (about 30 minutes) attributed to near-resonance within the Bay (Wilson and Torum, 1968). Magoon (1966) developed an attenuation relation based on the 1960 and 1964 events and shows an amplitude decay by 50 percent of the Presidio value at Alameda and a 90 percent decrease at the northern and southern ends of the Bay. The 1964 tsunami was the most damaging historic event and caused about 177,000 (US dollars) in damages to boats and floating structures, with 1.13 m amplitude waves recorded at the Presidio. Six credible local tsunami events were observed between 1851 and 1906, four attributed to earthquake sources and two to landslides. The largest (0.6 m near Benicia) was caused by the 1898 Mare Island earthquake and is attributed to slip on the Rogers Creep fault. Garcia and Houston (1975) made return estimates for San Francisco Bay, considering only Alaska sources and estimated 100- and 500-year heights of 2.5 and 4.8 meters respectively at the Presidio. These values need to be reassessed in light of other credible teletsunami sources, particularly the Cascadia subduction zone, and local sources including step-overs on regional strike-slip faults and landslides within the bay. We present the results of numerical modeling runs to test Magoon's attenuation models and to compare local and teletsunami source regions.

Dengler, L.; Borrero, J.; Patton, J.

2004-12-01

68

San Bernardino County Museum  

Science.gov (United States)

The San Bernardino County Museum is a regional museum with exhibits and collections in cultural and natural history. Special exhibits, the Exploration Station live animal discovery center, extensive research collections, and public programs for adults, families, students, and children are all part of the museum experience. The Museum is surrounded by citrus groves, and orange blossoms perfume the air. The Zimmerman Citrus Kiosk explores citrus agricultural history in Southern California. Death Valley Alive! is a new traveling exhibit, available for rent, where visitors can explore the natural history and culture of the Death Valley region from its geologic beginnings 1.3 billion years ago. Online exhibits include The Importance of Museum Collections, The Barstow Fossil Beds, Motherlode of the Miocene, The Etiwanda Fan, and for kids, Mimicry, a study in camouflage and adaptation. Teacher Resources include professional development and workshops, and Trading Places, where 21 hours of time spent volunteering in the Museum earns a free program for your class. Sample opportunities include writing activities for study kits, developing post-visit activities, creating a museum gallery guide, translating student materials into Spanish, or developing an independent idea. There are programs for youth, Scouts, and adults, as well as various publications available in anthropology, archeology, biology, geology and history.

69

75 FR 27432 - Security Zone; Golden Guardian 2010 Regional Exercise; San Francisco Bay, San Francisco, CA  

Science.gov (United States)

...Golden Guardian 2010 Regional Exercise; San Francisco Bay, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION: Temporary...security zones on the navigable waters of the San Francisco Bay in support of Golden Guardian 2010...

2010-05-17

70

76 FR 38305 - Safety Zone; San Francisco Chronicle Fireworks Display, San Francisco, CA  

Science.gov (United States)

...No. USCG 2011-0402] Safety Zone; San Francisco Chronicle Fireworks Display, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION...enforce the safety zones for the annual San Francisco Chronicle Fireworks Display...

2011-06-30

71

75 FR 35651 - Safety Zone; San Francisco Chronicle Fireworks Display, San Francisco, CA  

Science.gov (United States)

...No. USCG 2010-0367] Safety Zone; San Francisco Chronicle Fireworks Display, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION...Independence Day Celebration for the City of San Francisco Fireworks safety zone from 11 a.m....

2010-06-23

72

77 FR 15260 - Safety Zone; San Francisco Fireworks Display, San Francisco, CA  

Science.gov (United States)

...Docket No. USCG 2012-0105] Safety Zone; San Francisco Fireworks Display, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION: Notice...Guard will enforce the safety zone for the San Francisco Giants Fireworks Display in the Captain of...

2012-03-15

73

76 FR 81371 - Safety Zone; San Francisco New Year's Eve Fireworks Display, San Francisco, CA  

Science.gov (United States)

...USCG 2011-1038] Safety Zone; San Francisco New Year's Eve Fireworks Display, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION...enforce the safety zone for the annual San Francisco New Year's Eve Fireworks Display in...

2011-12-28

74

Subsurface Structure of San Leandro From the San Francisco Bay to the Hayward Fault  

Science.gov (United States)

The city of San Leandro, California is located in the eastern San Francisco Bay area between the Bay and the East Bay hills (Diablo Mountains). The major known tectonic structures in the immediate San Leandro area are the Hayward fault to the east and the San Leandro basin, a deep sedimentary basin, beneath the western side of the city. To better understand the San Leandro basin, its subsurface fault structures, and the effect of these structures on ground water and earthquake hazards, the U.S. Geological Survey acquired an approximately 10-km-long, high-resolution, combined reflection and refraction seismic imaging profile across the city in June 2002. The seismic profile originated within the waters of the San Francisco Bay and ended at the Hayward fault. Seismic sources were generated by a combination of 400-grain, Betsy-Seisgun blanks in 0.3-m-deep holes and 0.25-to-0.5-kg, buried explosions in 1.5-m-deep holes. The combined spacing of seismic sources was 5 m. The seismic data were recorded on an array of four 60-channel Geometrics Strataview seismographs, with 40-Hz single-element, vertical sensors spaced at 5 m. P-wave velocities range from about 800 m/s at the surface to greater than 2000 m/s at about 100 m depth. Prominent lateral low-velocity areas are evident at several locations along the profile. Reflection images show that the low-velocity areas are largely related to zones of faulting. Near-surface faults are observed on the reflection images, including southwest-dipping faults at the edge of the bay and near-vertical faults within the Hayward fault zone, but the most prominent fault occurs approximately 1 km east of the bay, where it bounds the ~1-km-deep San Leandro basin. Because the near-surface faults are observed within a few meters of the surface and because epicenters of small-magnitude earthquakes correlate with these faults, it is likely that they are active and represent potential hazards. The reflection and velocity images show that some of the near-surface faults vertically offset the upper ground-water aquifer, suggesting that lateral flow of ground water in the East Bay region is affected by the faults.

Goldman, M. R.; Catching, R. D.; Rymer, M. J.; Gandhok, G.; Steedman, C. E.

2003-12-01

75

Characterization of the grafting copolymer EPDM-SAN; Caracterizacao do copolimero de enxertia EPDM-SAN  

Energy Technology Data Exchange (ETDEWEB)

This work aims the characterization of the grafting copolymer EPDM-SAN. This copolymer presents a fraction of free SAN chains, which was extracted by solubilization in chloroform followed of precipitation of the grafting copolymer EPDM-g-SAN in acetone. The EPDM-SAN and EPDM-g-SAN were characterized by {sup 13}C NMR, DSC, TGA and SEM. EPDM-SAN contain 23 wt% of free SAN and 77 wt% of EPDM-g-SAN. Both materials are heterogeneous and the thermal and thermo-oxidative degradation are independent of the composition. (author)

Turchette, Renato; Felisberti, Maria Isabel [Universidade Estadual de Campinas, SP (Brazil). Inst. de Quimica]. E-mail: turchete@iqm.unicamp.br

2001-07-01

76

77 FR 15798 - Notice of Intent To Repatriate Cultural Items: San Francisco State University, San Francisco, CA  

Science.gov (United States)

...of Intent To Repatriate Cultural Items: San Francisco State University, San Francisco, CA AGENCY: National Park Service, Interior...SUMMARY: The San Francisco State University, in consultation with...

2012-03-16

77

Lipid sorting revealed by SANS  

International Nuclear Information System (INIS)

We have investigated the lipid sorting in a binary small unilamellar vesicle (SUV) composed of cone-shaped (1,2-dihexanoyl-sn-glycero-3-phosphocholine: DHPC) and cylinder-shaped (1,2-dipalmitoyl-sn-glycero-3-phosphocholine: DPPC) lipids. In order to reveal the lipid sorting we adopted a contrast matching technique of small angle neutron scattering (SANS), which extracts the distribution of deuterated lipids in the bilayer quantitatively. The SANS profile of deuterated SUVs at the contrast matching condition showed a characteristic scattering profile, indicating an asymmetric distribution of cone-shaped lipids in the bilayer. The fitting of the observed SANS profile revealed that most DHPC molecules are localized in the outer leaflet, which supports that the shape of the lipid is strongly coupled with the membrane curvature. We compared the obtained asymmetric distribution of the cone-shaped lipids in the bilayer with the theoretical prediction based on the curvature energy model. (author)

2013-02-01

78

Factores presentes en la deserción universitaria en la Facultad de Psicología de la Universidad De San Buenaventura, sede Bogotá en el periodo comprendido entre 1998-2009 / Factors related to the college dropout in the Faculty of Psychology at San Buenaventura University Bogotá in the period 1998-2009  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish Abstract in spanish El objetivo del presente estudio fue describir los factores socio demográficos y las categorías del modelo psicológico de Ethington, presentes en la deserción universitaria, evaluados por medio de una encuesta telefónica diseñada con base en estas categorías y validada por jueces. Los participantes [...] tenían entre 16 y 32 años, solteros, de estratos 3 y 4. Los resultados descriptivos permiten concluir que existen diversas causas para que se presente la deserción en la Facultad de Psicología de la Universidad San Buenaventura, sede Bogotá. Dificultades tales como incompatibilidad del horario de estudio con el horario de trabajo, escasa información respecto al programa elegido al ingresar a la Universidad y dificultades de salud. Es importante destacar que la categoría que presentó el porcentaje más alto fue la de apoyo económico familiar con un 95%. Abstract in english The purpose of this study was to describe the categories as well as the socio-demographic aspects of Ethington's psychological model, present in the university dropout. In order to do that, those aspects were assessed using a telephone survey validated by judges. Participants were between 16 and 32 [...] years, single, from 3 and 4 social stratum. The results show that there are various reasons for dropout in the Faculty of Psychology at the University of San Buenaventura, such as: incompatibility between study and work schedules, unsuitable or insufficient information when going to University and finally, health difficulties.

Mateus Rodríguez, María Juliana; Herrera Hernández, Consuelo; Perilla Suárez, Catalina; Parra Quecan, Gilma; Vera Maldonado, Anderssen.

79

Magnetostratigraphy of the Lower Cretaceous San Marcos Formation, Coahuila, Mexico  

Science.gov (United States)

Continental hematitic strata of the Lower Cretaceous San Marcos Formation, in central Coahuila, were deposited on and along the margins of the Coahuila Island, a prominent paleogeographic element in NE Mexico. It contains the stratigraphic record of activity along the San Marcos fault, the southern margin of the Sabinas basin. It is overlain by marine limestones of the Cupido Formation, and the contact is transitional. It rests on ammonite bearing strata of Tithonian age, but the contact is not well exposed. We sampled the San Marcos Formation at localities in Potrero Colorado and Valle de San Marcos, for a total of 34 paleomagnetic sites in three sections (one site=one bed). The beds dip gently to the north to northwest at all three sections.The characteristic magnetization is a dual-polarity, high coercivity, and high unblocking temperature (>650 °C), northwest directed moderately positive component, overprinted by a north directed magnetization of lower stability. Occasionally, the reverse polarity magnetization (south-southwest to southeast directed) is only revealed by demagnetization trajectories. Dual polarity magnetizations within two sites suggest that the remanence acquisition process is of long duration relative to the duration of reversals. A composite section defines 9 magnetozones, and it is characterized by reversed zones of short duration relative to normal intervals. We thus correlate the magnetic polarity sequence of the San Marcos Formation with the M5 to M0 chron sequence of the Barremian to early Aptian GPTS. Site means are relatively well grouped. Tilt corrected means for each of the sections samples vary from discordant (191.7°, -54.9°; k=40.5, ?95=9.6°; 7 accepted sites) at the base of the section to concordant (333.6°, 58.3°; k=28.3, ?95=12.6°; 7 accepted sites) at the top of the section. The discordance at the base of the section is interpreted in terms of a small clockwise rotation related to activity along the San Marcos fault.

Molina-Garza, R. S.; Arvizu, I.; González, G.

2007-05-01

80

San Language Development for Education in South Africa: The South African San Institute and the San Language Committees  

Science.gov (United States)

This article focuses on the 3 San communities in South Africa: the !Xun, the Khwe, and the [image omitted]Khomani San. The !Xun and Khwe communities are living in Platfontein, near Kimberley in the Northern Cape. The [image omitted]Khomani San community is living in Upington and in the southern Kalahari, which are also in the Northern Cape. This…

Pamo, Billies

2011-01-01

 
 
 
 
81

75 FR 39166 - Safety Zone; San Francisco Giants Baseball Game Promotion, San Francisco, CA  

Science.gov (United States)

...USCG-2010-0547] RIN 1625-AA00 Safety Zone; San Francisco Giants Baseball Game Promotion, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION...navigable waters of McCovey Cove in San Francisco Bay off San Francisco, CA in support...

2010-07-08

82

San Pascual (2011) Año XLIX, n. 360  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Editorial. Jornada mundial de la juventud, visita de su santidad Benedicto XVI a Madrid. Venerable Fray Diego Baylón, del sepulcro. Efemérides pascualinas, 28 de julio de 1775.Otras efemérides. Cosas de San Pascual, San Pascual y el niño. El monasterio de la Inmaculada y San Pascual de Madrid. La adoración nocturna española, crónica de la fiesta en el 125 aniversario de su fundación. Vida en el santuario. Colaboraciones, San Pascual un pastor ejemplar. Rincón poético, las lágrimas ...

2011-01-01

83

A Spanish Borderlands Community: San Antonio.  

Science.gov (United States)

Discusses the founding of San Antonio, originally San Antonio de Bexar, which, in 1718, came into being as a military settlement involved in Spanish imperial defensive measures. Focuses on the development and continued growth of San Antonio, Texas's most populous city in the 19th century. (CMK)

Teja, Jesus F. de la

2000-01-01

84

Perspective View, San Andreas Fault  

Science.gov (United States)

The prominent linear feature straight down the center of this perspective view is the San Andreas Fault in an image created with data from NASA's shuttle Radar Topography Mission (SRTM), which will be used by geologists studying fault dynamics and landforms resulting from active tectonics. This segment of the fault lies west of the city of Palmdale, California, about 100 kilometers (about 60 miles) northwest of Los Angeles. The fault is the active tectonic boundary between the North American plate on the right, and the Pacific plate on the left. Relative to each other, the Pacific plate is moving away from the viewer and the North American plate is moving toward the viewer along what geologists call a right lateral strike-slip fault. This area is at the junction of two large mountain ranges, the San Gabriel Mountains on the left and the Tehachapi Mountains on the right. Quail Lake Reservoir sits in the topographic depression created by past movement along the fault. Interstate 5 is the prominent linear feature starting at the left edge of the image and continuing into the fault zone, passing eventually over Tejon Pass into the Central Valley, visible at the upper left.This type of display adds the important dimension of elevation to the study of land use and environmental processes as observed in satellite images. The perspective view was created by draping a Landsat satellite image over an SRTM elevation model. Topography is exaggerated 1.5 times vertically. The Landsat image was provided by the United States Geological Survey's Earth Resources Observations Systems (EROS) Data Center, Sioux Falls, South Dakota.Elevation data used in this image was acquired by the Shuttle Radar Topography Mission (SRTM) aboard the Space Shuttle Endeavour, launched on February 11,2000. SRTM used the same radar instrument that comprised the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) that flew twice on the Space Shuttle Endeavour in 1994. SRTM was designed to collect three-dimensional measurements of the Earth's surface. To collect the 3-D data, engineers added a 60-meter-long (200-foot) mast, installed additional C-band and X-band antennas, and improved tracking and navigation devices. The mission is a cooperative project between the National Aeronautics and Space Administration (NASA), the National Imagery and Mapping Agency (NIMA) of the U.S. Department of Defense (DoD), and the German and Italian space agencies. It is managed by NASA's Jet Propulsion Laboratory, Pasadena, CA, for NASA's Earth Science Enterprise,Washington, DC.Size: Varies in a perspective view Location: 34.78 deg. North lat., 118.75 deg. West lon. Orientation: Looking Northwest Original Data Resolution: SRTM and Landsat: 30 meters (99 feet) Date Acquired: February 16, 2000

2000-01-01

85

Seeking Justice in San Francisco  

Science.gov (United States)

This article discusses the life of Carlos A. Garcia, superintendent at the San Francisco Unified School District. Garcia was born in Chicago, but his parents shortly thereafter moved back to their homeland of Mexico for a few years. When Garcia was almost 5, his family moved to Los Angeles, where his parents worked in factories and Garcia was…

Pascopella, Angela

2010-01-01

86

ASTER Flyby of San Francisco  

Science.gov (United States)

The Advanced Spaceborne Thermal Emission and Reflection radiometer, ASTER, is an international project: the instrument was supplied by Japan's Ministry of International Trade and Industry. A joint US/Japan science team developed algorithms for science data products, and is validating instrument performance. With its 14 spectral bands, extremely high spatial resolution, and 15 meter along-track stereo capability, ASTER is the zoom lens of the Terra satellite. The primary mission goals are to characterize the Earth's surface; and to monitor dynamic events and processes that influence habitability at human scales. ASTER's monitoring and mapping capabilities are illustrated by this series of images of the San Francisco area. The visible and near infrared image reveals suspended sediment in the bays, vegetation health, and details of the urban environment. Flying over San Francisco (3.2MB) (high-res (18.3MB)), we see the downtown, and shadows of the large buildings. Past the Golden Gate Bridge and Alcatraz Island, we cross San Pablo Bay and enter Suisun Bay. Turning south, we fly over the Berkeley and Oakland Hills. Large salt evaporation ponds come into view at the south end of San Francisco Bay. We turn northward, and approach San Francisco Airport. Rather than landing and ending our flight, we see this is as only the beginning of a 6 year mission to better understand the habitability of the world on which we live. For more information: ASTER images through Visible Earth ASTER Web Site Image courtesy of MITI, ERSDAC, JAROS, and the U.S./Japan ASTER Science Team

2002-01-01

87

Phospholipid Fatty Acid Analysis of Algal Communities in the San Luis Drain, California  

Science.gov (United States)

Algal, bacterial, and zooplankton biomass and species diversity were examined by measuring phospholipid fatty acid (PLFA) in water samples along the San Luis Drain in the San Joaquin Valley of California. Algal growth has been has been identified as a major cause of the degradation of water quality in the San Joaquin River. The San Luis Drain is a concrete lined channel than transports agricultural drainage water from the west side of the San Joaquin Valley to the San Joaquin River. Understanding the growth of algae in the San Luis Drain, a potential major input of algae into the San Joaquin River, is central in understanding potential algal control measures for this region. Samples were taken along the length of the drain in early, mid and late summer. Signature fatty acids were used to understand the ecology of algal and zooplankton through total lipid analysis and by analyzing shifts in PLFA composition. It was found that lipids associated with algal growth were highly correlated with chlorophyll measurements, and dips in the chlorophyll concentration corresponded to an increase in zooplankton lipids. Algal community structure was relatively constant along the drain during a sampling event but shifted significantly between sampling event through the summer season.

Borglin, S. E.; Stringfellow, W. T.; Hanlon, J. S.

2005-12-01

88

Manager sans a priori  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Il n'y a pas que la défense des intérêts et des jeux de pouvoir qui bloquent le processus de réforme d'une entreprise. Il y a aussi les habitudes de penser, ou ce qu'il convient d'appeler les représentations, qui sont en entreprises les schémas mentaux qui induisent les modes de relations et qui exemple ancrent dans les esprits, et de façon parfois durable, les modes opératoires. La question des représentations apparaît de façon sensible lorsqu'un processus de changement est engag?...

2011-01-01

89

Sintered materials studied by SANS  

International Nuclear Information System (INIS)

Complete text of publication follows. The small angle scattering of compacted and sintered single phase materials with open or closed porosity can be described by the two phase model. During sintering, the decrease of pore volume is accompanied with decreasing internal surface measured by SANS [1]. Such investigation can be extended to the field of technically relevant multiphase materials as well, e.g. doped tunsten, SiN ceramics and WC-Co composite made from nano-crystalline powder. The deformation of remaining porosity after sintering can be monitored by 2D anisotropy of SANS distribution as the sintered body is processed through several steps of thermomechanical treatment. The elongation of pores or stable bubbles, e.g. K gas filled bubbles in doped W [2], follows the macroscopic deformation of the body. Heat treatment, however, causes spheroidization with vanishing SANS anisotropy. Our investigation using the isointensity contour map method allows establishing a new description of mechanisms of thermomechanical processing. (author) [1] O. Blaschko, R. Glas, G. Krexner and P. Weinzierl, Physical Review Letters 68 970-973 (1992); [2] O. Horacsek, M. Menyhard and J. Labar, High Temperature Materials and Processes 14 207-213 (1995)

1999-01-01

90

San Diego State University Coastal and Marine Institute  

Science.gov (United States)

The Coastal & Marine Institute studies environmental processes, advises on the management of natural resources, and coordinates oceanography and marine studies at San Diego State University. Undergraduate students can emphasize marine studies within their departmental degree program; Biology and Geology departments offer marine-related minors. CMI offers marine-related graduate degrees in: Biology; Chemistry; Ecology; Engineering; Genetics; Geology; Geography; Political Science. Also profiled are: research facilities; faculty expertise; student projects.

2011-01-31

91

Bancos de cholga Aulacomya atra atra (Molina) (Bivalvia: Mytilidae) del golfo San José (Chubut, Argentina): Diversidad y relaciones con facies afines / Ribbed mussel Aulacomya atra atra (Molina) (Bivalvia: Mytilidae) beds of the San José Gulf (Chubut, Argentina): Diversity and relationships with related facies  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish Abstract in spanish Se estudió la diversidad y relaciones entre diferentes poblamientos de la biocenosis de raspadores-suspensívoros del golfo San José (Chubut, Argentina: 42º20’S; 64º20’W), con énfasis en los bancos de cholga Aulacomya atra atra. Las relaciones entre poblamientos se estudiaron a través de un análisis [...] de correspondencias sin tendencias y las relaciones entre poblamientos y factores ambientales a través de un análisis factorial de correspondencias. Para el estudio de la diversidad se utilizaron los índices de diversidad de Hill (N0, N1 y N2), así como el índice de uniformidad derivado (E=N2/N1). Se analizaron, dentro del contexto de estos poblamientos, las relaciones entre la diversidad observada con la resistencia a los disturbios, la presencia de depredadores y con la sucesión y aumento de la heterogeneidad espacial. Se concluyó que: (1) Los bancos de cholga sobre sustratos duros, en razón de hallarse en sitios protegidos del oleaje producido por vientos locales y con una matriz física fijada firmemente a la roca mantienen una alta riqueza específica y una alta uniformidad. (2) Los poblamientos de fondos blandos de mejillón Mytilus edulis platensis en condiciones de estabilidad, evolucionan hacia bancos mixtos con cholgas lo que implica aumento en la complejidad del sustrato, en la heterogeneidad espacial del banco y en la riqueza específica. Estos bancos mixtos al quedar sujetos a disturbios físicos revertirían el proceso de sucesión. (3) Los bancos de vieira tehuelche Aequipecten tehuelchus son propios de ambientes permanentemente disturbados por movimientos del agua y poseen características de baja uniformidad y baja riqueza específica. Con disturbios intensos e infrecuentes estos bancos son eliminados del sitio que ocupaban, ocasionándose arribazones de las especies desprendidas. (4) Los bancos mixtos de cholga-vieira tehuelche son facies alternativas a los bancos de vieira y tienen lugar en sitios protegidos Abstract in english The relationships between different assemblages of the grazer-suspensivore biocoenosis and their diversities were studied at the San José Gulf (Chubut Province, Argentina: 42º20’S; 64º20’W), with emphasis on the facies of the ribbed mussel Aulacomya atra atra. The ordination analysis of the assembla [...] ges species composition was performed using detrended correspondence analysis and the relationships of the assemblages with the environmental factors were analysed using factorial correspondence analysis. The Hill diversity indices (N0, N1, N2), and the evenness derived index (E=N2/N1) were calculated. It was concluded that: (1) The ribbed mussel beds on hard sustrate have high species richness and high equitability, because the rocks provides firm surfaces for byssal attachment and these beds are usually found in protected localities. (2) The soft bottom assemblages with the mussel Mytilus edulis platensis, under conditions of environmental stability, evolve towards mixed beds with ribbed mussel; this process implies increased sustrate complexity, increased spatial heterogeneity and higher species richness. This successional process can be reverted if the mixed bed are affected by strong physical disturbance which can dislodge the assemblages. (3) Beds of the scallop Aequipecten tehuelchus are found at sites permanently disturbed by waves generated by local winds, they have low equitability and low species richness. When the environmental disturbance is very intense the bed is dislodged and big quantities of individuals are beach stranded. (4) The mixed beds of ribbed mussel and Aequipecten tehuelchus are facies which are alternative to Aequipecten beds and they are found in protected sites

Héctor E, Zaixso.

92

77 FR 70891 - Safety Zone; Bay Bridge Construction, San Francisco Bay, San Francisco, CA  

Science.gov (United States)

...1625-AA00 Safety Zone; Bay Bridge Construction, San Francisco Bay, San...CA in support of the Bay Bridge Construction Safety Zone from November...CALTRANS will sponsor the Bay Bridge Construction Safety Zone on November...

2012-11-28

93

San Pascual (2009) Año XLVII, n. 353  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Editorial. Associació cultural amics museu pouet del Sant. Otra navidad con San Pascual. Siguiendo los caminos de San Pascual. Hermano Rafael Arnaiz Baron. Entrevista: D. José Ortells Llop presidente de caritas interparroquial de vila-real. Milagros de San Pascual (XV). La navidad de mi niñez. Vida en el santuario. Rincón poéticos. La familia franciscana: 800 años al servicio del evangelio y de la Iglesia. La puerta de la libertad. El corazón de un Santo (X). Excursión a torrehermosa ...

2009-01-01

94

San Onofre - the evolution of outage management  

International Nuclear Information System (INIS)

With the addition of units 2 and 3 to San Onofre nuclear station in 1983 and 1984, it became evident that a separate group was needed to manage outages. Despite early establishment of a division to handle outages, it was a difficult journey to make the changes to achieve short outages. Early organizational emphasis was on developing an error-free operating environment and work culture. This is difficult for a relatively large organization at a three-unit site. The work processes and decision styles were designed to be very deliberate with many checks and balances. The organization leadership and accountability were focused in the traditional operations, maintenance, and engineering divisions. Later, our organization emphasis shifted to achieving engineering excellence. With a sound foundation of operating and engineering excellence, our organizational focus has turned to achieving quality outages. This means accomplishing the right work in a shorter duration and having the units run until the next refueling

1993-11-14

95

San Pascual (2009) Año XLVII, n. 352  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Editorial. Fiesta anual de la virgen del Rosario en la basílica. Siguiendo los caminos de San Pascual capítulo XVII. El cura D. Salvador Ramos Vilar y la arciprestal San Jaime de vila-real. Milagros de San Pascual. Entrevista el padre Vicente Mundina: Mi vida, mi gente, mis plantas. Vida en el santuario. Sun Hwa Choi (Teresa). Rincón poético. Peregrinación nacional al sepulcro de San Pascual en 1899 (V). Cristo creación, eucaristía. El corazón de un santo (IX). Visita al museo de la c...

2009-01-01

96

The performance of magnetic lens for focusing VCN-SANS  

International Nuclear Information System (INIS)

We have developed a prototype rotating-permanent magnet sextupole lens (named rot-PMSx) for more efficient experiments with neutron beams in time of flight (ToF) mode. This lens can modulate the focusing strength over range 1.5x104T/m2?g'?5.9x104T/m2. Synchronization between the modulation and the beam pulse produces a focused beam without significant chromatic aberration. We anticipate that this lens could be utilized in focusing small angle neutron scattering (SANS) instruments for novel approach to high resolution SANS. We carried out experiments testing the principle of this lens at the very cold neutron (VCN) beamline (PF2) at Institut Laue-Langevin (ILL), France. The focused beam image size at the detector was kept constant at the same beam size as the source (?3mm) over a wavelength range of 30A???48A in focal length of ?1.14m. The flux gain was about 12 relative to a beam without focusing, and the depth of focus was quite large. These results show the good performance of this lens and the system. Thereupon we have demonstrated the performance of this test bed for high resolution focusing of VCN-SANS for a well-studied softmatter sample; a deuterium oxide solution of Pluronic F127, an (PEO)100(PPO)65(PEO)100 tri-block copolymer in deuterium oxide. The results of the focusing experiment and the focusing VCN-SANS are presented.

2011-04-01

97

The performance of magnetic lens for focusing VCN-SANS  

Science.gov (United States)

We have developed a prototype rotating-permanent magnet sextupole lens (named rot-PMSx) for more efficient experiments with neutron beams in time of flight (ToF) mode. This lens can modulate the focusing strength over range 1.5×104T/m2?g??5.9×104T/m2. Synchronization between the modulation and the beam pulse produces a focused beam without significant chromatic aberration. We anticipate that this lens could be utilized in focusing small angle neutron scattering (SANS) instruments for novel approach to high resolution SANS.We carried out experiments testing the principle of this lens at the very cold neutron (VCN) beamline (PF2) at Institut Laue-Langevin (ILL), France. The focused beam image size at the detector was kept constant at the same beam size as the source (?3mm) over a wavelength range of 30Å???48Å in focal length of ?1.14m. The flux gain was about 12 relative to a beam without focusing, and the depth of focus was quite large. These results show the good performance of this lens and the system. Thereupon we have demonstrated the performance of this test bed for high resolution focusing of VCN-SANS for a well-studied softmatter sample; a deuterium oxide solution of Pluronic F127, an (PEO)100(PPO)65(PEO)100 tri-block copolymer in deuterium oxide. The results of the focusing experiment and the focusing VCN-SANS are presented.

Nop Collaboration; Yamada, M.; Iwashita, Y.; Kanaya, T.; Ichikawa, M.; Tongu, H.; Kennedy, S. J.; Shimizu, H. M.; Mishima, K.; Yamada, N. L.; Hirota, K.; Carpenter, J. M.; Lal, J.; Andersen, K.; Geltenbort, P.; Guerard, B.; Manzin, G.; Hino, M.; Kitaguchi, M.; Bleuel, M.; NOP Collaboration

2011-04-01

98

77 FR 37604 - Safety Zone; Fourth of July Fireworks, City of San Francisco, San Francisco, CA  

Science.gov (United States)

...Fourth of July Fireworks, City of San Francisco, San...the safety zone for the City of Sausalito's Fourth...in the Captain of the Port, San Francisco area of...W (NAD83) for the City of Sausalito's Fourth...If the Captain of the Port determines that the...

2012-06-22

99

76 FR 75908 - Notice of Inventory Completion: The University of California, San Diego, San Diego, CA  

Science.gov (United States)

...San Diego's University House site, in San Diego, CA. The site is variously referred to as the Black, William House; SDM-W-12A (as recorded by the San Diego Museum of Man); CA-SDI-4669 (as recorded with the State of California);...

2011-12-05

100

78 FR 35593 - Special Local Regulation; Christmas Boat Parade, San Juan Harbor; San Juan, PR  

Science.gov (United States)

...RIN 1625-AA08 Special Local Regulation; Christmas Boat Parade, San Juan Harbor; San Juan, PR AGENCY: Coast...Harbor in San Juan, Puerto Rico during the Christmas Boat Parade, a Boat Parade. The event is scheduled to take place on...

2013-06-13

 
 
 
 
101

Non-linear vibrations of cracked structures: application to turbine rotors; Vibrations non-lineaires des structures fissurees: application aux rotors de turbines  

Energy Technology Data Exchange (ETDEWEB)

The aim of this work is to study the dynamic response of a cracked rotor to establish some possibilities for early on line crack detection. First, a review on experimental, numerical and analytical works on the dynamics of cracked rotors is given. Then, an original method of calculating the behavior of a cracked beam section in bending with shearing effects is presented. The nonlinear behavior relations are derived from a three-dimensional model taking into account the unilateral contact conditions on the crack's lips. Based on an energy formulation, this method could be applied to any geometry of crack. The exploration by different numerical integration methods of the vibratory response of some models of cracked rotors is presented in the third chapter of this thesis. The un-cracked parts of a rotor are represented by elements of bar or beam type, and the cracked section by a nonlinear spring taking into account the breathing mechanism of the cracks. At the end of this part, an original method of construction of a finite element of a cracked beam is presented. The final chapter is devoted to the analytical study of the system with 2 degrees of freedom. The breathing mechanism of the crack is taken into account by considering specific periodic variation of the global stiffness of the system. The differential equations system is solved using the harmonic balance method. The linear stability of the periodic solutions is studied by the Floquet theory. Some vibratory parameters are proposed as crack indicators. (author)

El Arem, S.

2006-01-15

102

SANS from interpenetrating polymer networks  

International Nuclear Information System (INIS)

Full text: Interpenetrating polymer networks (IPNs) have been formed by combining two polymeric systems in order to gain enhanced material properties. IPNs are a combination of two or more polymers in network form with one network polymerised and/or crosslinked in the immediate presence of the other(s).1 IPNs allow better blending of two or more crosslinked networks. In this study two sets of IPNs were produced and their microstructure studied using a variety of techniques including small angle neutron scattering (SANS). The first system combined a glassy polymer (polystyrene) with an elastomeric polymer (SBS) with the glassy polymer predominating, to give a high impact plastic. The second set of IPNs contained epichlorohydrin (CO) and nitrile rubber (NBR), and was formed in order to produce novel materials with enhanced chemical and gas barrier properties. In both cases if the phase mixing is optimised the probability of controlled morphologies and synergistic behaviour is increased. The PS/SBS IPNs were prepared using sequential polymerisation. The primary SBS network was thermally crosslinked, then the polystyrene network was polymerised and crosslinked using gamma irradiation to avoid possible thermal degradation of the butadiene segment of the SBS. Tough transparent systems were produced with no apparent thermal degradation of the polybutadiene segments. The epichlorohydrin/nitrile rubber IPNs were formed by simultaneous thermal crosslinking reactions. The epichlorohydrin network was formed using lead based crosslinker, while the nitrile rubber was crosslinked by peroxide methods. The use of two different crosslinking systems was employed in order to achieve independent crosslinking thus resulting in an IPN with minimal grafting between the component networks. SANS, Transmission electron microscopy (TEM), and atomic force microscopy (AFM) were used to examine the size and shape of the phase domains and investigate any variation with crosslinking level and irradiation dose. SANS proved extremely useful for examining the size and shape of the phase domains in these IPNs. We have examined a range of both thermal and radiation crosslinked IPNs using SANS facilities at ANSTO and NIST. Selected samples were sectioned into 1mm strips and stacked to form a composite sample to examine in-plane structure.2 The examination of some of the samples in two perpendicular directions greatly assisted structure determination. New results from real-time thermal polymerisation experiments will also be discussed

2003-06-25

103

Beneficial Reuse of San Ardo Produced Water  

Energy Technology Data Exchange (ETDEWEB)

This DOE funded study was performed to evaluate the potential for treatment and beneficial reuse of produced water from the San Ardo oilfield in Monterey County, CA. The potential benefits of a successful full-scale implementation of this project include improvements in oil production efficiency and additional recoverable oil reserves as well as the addition of a new reclaimed water resource. The overall project was conducted in two Phases. Phase I identified and evaluated potential end uses for the treated produced water, established treated water quality objectives, reviewed regulations related to treatment, transport, storage and use of the treated produced water, and investigated various water treatment technology options. Phase II involved the construction and operation of a small-scale water treatment pilot facility to evaluate the process's performance on produced water from the San Ardo oilfield. Cost estimates for a potential full-scale facility were also developed. Potential end uses identified for the treated water include (1) agricultural use near the oilfield, (2) use by Monterey County Water Resources Agency (MCWRA) for the Salinas Valley Water Project or Castroville Seawater Intrusion Project, (3) industrial or power plant use in King City, and (4) use for wetlands creation in the Salinas Basin. All of these uses were found to have major obstacles that prevent full-scale implementation. An additional option for potential reuse of the treated produced water was subsequently identified. That option involves using the treated produced water to recharge groundwater in the vicinity of the oil field. The recharge option may avoid the limitations that the other reuse options face. The water treatment pilot process utilized: (1) warm precipitation softening to remove hardness and silica, (2) evaporative cooling to meet downstream temperature limitations and facilitate removal of ammonia, and (3) reverse osmosis (RO) for removal of dissolved salts, boron, and organics. Pilot study results indicate that produced water from the San Ardo oilfield can be treated to meet project water quality goals. Approximately 600 mg/l of caustic and 100 mg/l magnesium dosing were required to meet the hardness and silica goals in the warm softening unit. Approximately 30% of the ammonia was removed in the cooling tower; additional ammonia could be removed by ion exchange or other methods if necessary. A brackish water reverse osmosis membrane was effective in removing total dissolved solids and organics at all pH levels evaluated; however, the boron treatment objective was only achieved at a pH of 10.5 and above.

Robert A. Liske

2006-07-31

104

San Andreas Fault Geometry Near Parkfield, California  

Science.gov (United States)

A straightedge laid along the mapped traces of the San Andreas (SA) fault to NW and SE of the Parkfield segment in central California reveals a ~50 km long asymmetric northeastward warp in the Parkfield segment compared to the straighter, aligned segments at either end. The warp tapers gradually as it joins the creeping segment of the San Andreas to the NW, but bends abruptly across Cholame Valley at its SE end to join the locked segment that last ruptured in 1857. Aftershocks of Parkfield earthquakes in 1966 and 2004 and interevent seismicity plotted in map view tend to follow the straightedge connection rather than the San Andreas trace (Eaton et al., 1970; Eberhart-Phillips and Michael, 1993; Thurber et al., 2006), putting them more directly under the Southwest Fracture Zone (SWFZ) and related faults along the SW side of Cholame Valley. The continuous GPS station CARH at Carr Hill, which lies to the SW of the SA trace but NE of the SWFZ, initially displaced to the SE after the 2004 earthquake, as would be expected if it were on the NE side of the rupture plane, but subsequently changed direction and started moving to the NW, as if it had migrated to the opposite side of the rupture plane. It appears that the fault strand connecting the 2004 rupture zone at depth with the current creeping SA trace must be a dipping surface passing under Carr Hill, and that as slip worked its way up this strand towards the Earth's surface, CARH gradually changed rupture side. We suggest that the currently active SA fault surface near Parkfield has been warped in its upper ~6 km by non- elastic behavior of upper crustal rock units and the presence of the 1857 locked patch just to the SE. Intermittent coseismic and continuous aseismic slip on the Parkfield segment will slowly warp the fault surface, but because of non-elastic behavior, this warping is not completely undone when an 1857-type event occurs. After many 1857-type cycles, the warp is ratcheted into an increasingly unfeasible geometry for slip, until eventually the warped strand is abandoned for a more direct connection to the surface, perhaps at the SWFZ. The presence of an abandoned SA trace to the NE of Gold Hill (Dickinson, 1966) suggests that the process has been going on for ~5-7 Ma. (Smaller adjustments in the active trace also occur as an ongoing process.) Preliminary finite element models exploring possible rheologies for the rock units adjacent to the Parkfield segment suggest that the proposed warping process is feasible.

Simpson, R. W.; Barall, M.; Langbein, J.; Murray, J. R.; Rymer, M. J.

2006-12-01

105

77 FR 15799 - Notice of Intent To Repatriate a Cultural Item: San Francisco State University, San Francisco, CA  

Science.gov (United States)

...of Intent To Repatriate a Cultural Item: San Francisco State University, San Francisco, CA AGENCY: National Park Service, Interior...SUMMARY: The San Francisco State University, in consultation with...

2012-03-16

106

76 FR 22809 - Safety Zone; Bay Ferry II Maritime Security Exercise; San Francisco Bay, San Francisco, CA  

Science.gov (United States)

...Bay Ferry II Maritime Security Exercise; San Francisco Bay, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION: Temporary...safety zone on the navigable waters of the San Francisco Bay in support of the Bay Ferry II Maritime...

2011-04-25

107

77 FR 36041 - San Antonio Central Railroad, L.L.C.-Lease Exemption-Port Authority of San Antonio  

Science.gov (United States)

...TRANSPORTATION Surface Transportation Board [Docket No. FD 35603] San Antonio Central Railroad, L.L.C.--Lease Exemption--Port Authority of San Antonio San Antonio Central Railroad, L.L.C. (SAC), a noncarrier, has filed a...

2012-06-15

108

La extensión de los suelos yesosos en San Luis Potosí, México.  

Digital Repository Infrastructure Vision for European Research (DRIVER)

[EN] The gypseous soils of San Luis Potosí State, México, are not well map-delimited, despite their broad extent and the specificagricultural and environmental management they require. The present article highlights the location and extent of the gypseous lands in the Altiplano and Zona Media of San Luis Potosí State. For this purpose, soil, geology and vegetation maps as well as studies related to gypsum-rich soils, aerial photographs, and satellite maps (termed ‘espaciomapas’ in Span...

2012-01-01

109

Children at danger: injury fatalities among children in San Diego County  

Digital Repository Infrastructure Vision for European Research (DRIVER)

External causes of death are important in the pediatric population worldwide. We performed an analysis of all injury-fatalities in children between ages zero and 17 years, between January 2000 and December 2006, in San Diego County, California, United States of America. Information was obtained from the County of San Diego Medical Examiner’s database. External causes were selected and grouped by intent and mechanism. Demographics, location of death and relation between the injury mechanism...

Fraga, Andrea M. A.; Fraga, Gustavo P.; Stanley, Christina; Costantini, Todd W.; Coimbra, Raul

2010-01-01

110

Sustainable Sanitation Alliance (SuSanA) | Projects at SEI  

...Sustainable Sanitation Alliance (SuSanA) | Projects at SEI Sustainable Sanitation Alliance (SuSanA) | Projects at SEI GLOBAL STOCKHOLM YORK ...org Sustainable Sanitation Alliance (SuSanA) SEI is one of the founding members of the Sustainable Sanitation Alliance (SuSanA).SuSanA is an informal network ... SuSanA came into existence in early 2007 and works as a coordination platform, working platform, sounding board, contributor to the ...Goal and objectives of the SuSanAThe overall goal of the SuSanA is to contribute to the achievement of the MDGs by promoting sanitation systems ...

111

Walking Field Trip to the San Andreas Fault  

Science.gov (United States)

In preparation for this walking field trip to the San Andreas Fault, students ideally have attended two lecture sessions where plate boundary processes and features have been discussed formally. The expected outcomes include students that are capable of calculating rupture length based on elastic rebound theory, recurrence interval, and relative plate motion and rates. The field trip procedure and details for each stop are included in the lab manual below.

Winkler, Fred

112

Geochemical correlation and 40Ar/39Ar dating of the Kern River ash bed and related tephra layers: Implications for the stratigraphy of petroleum-bearing formations in the San Joaquin Valley, California  

Science.gov (United States)

The Kern River ash (KRA) bed is a prominent tephra layer separating the K and G sands in the upper part of the Kern River Formation, a major petroleum-bearing formation in the southern San Joaquin Valley (SSJV) of California. The minimum age of the Kern River Formation was based on the tentative major-element correlation with the Bishop Tuff, a 0.759??0.002 Ma volcanic tephra layer erupted from the Long Valley Caldera. We report a 6.12??0.05 Ma 40Ar/39Ar date for the KRA, updated major-element correlations, trace-element correlations of the KRA and geochemically similar tephra, and a 6.0??0.2 Ma 40Ar/39Ar age for a tephra layer from the Volcano Hills/Silver Peak eruptive center in Nevada. Both major and trace-element correlations show that despite the similarity to the Bishop Tuff, the KRA correlates most closely with tephra from the Volcano Hills/Silver Peak eruptive center. This geochemical correlation is supported by the radiometric dates which are consistent with a correlation of the KRA to the Volcano Hills/Silver Peak center but not to the Bishop Tuff. The 6.12??0.05 Ma age for the KRA and the 6.0??0.2 Ma age for the tephra layer from the Volcano Hills/Silver Peak eruptive center suggest that the upper age of the Kern River Formation is over 5 Ma older than previously thought. Re-interpreted stratigraphy of the SSJV based on the new, significantly older age for the Kern River Formation opens up new opportunities for petroleum exploration in the SSJV and places better constraints on the tectonostratigraphic development of the SSJV. ?? 2007 Elsevier Ltd and INQUA.

Baron, D.; Negrini, R. M.; Golob, E. M.; Miller, D.; Sarna-Wojcicki, A.; Fleck, R. J.; Hacker, B.; Erendi, A.

2008-01-01

113

San Jose Children's Discovery Museum  

Science.gov (United States)

This website from the Children's Discovery Museum (CDM) in San Jose, California, offers a variety of interactive tools and games for children ages 4 to 10 years. The mathematics game featured is a card game called Arithmetic Rummy and requires a printer, while other features are more graphic-oriented. For example, an interactive video takes children through a short journey about energy, while another highlights water ways. The Teacher section provides additional tools and resources, which can be searched by grade level and then topic area. These lesson ideas can be used both on and off the Internet. Parents and teachers can also learn about other programs at the museum from this website. Registration is not required, but parents and educators are encouraged to register so CDM can "offer more personal experiences on the site for each child registrant" and "communicate appropriate educational content directly."

114

Relativity  

CERN Multimedia

Relativity: The Special and General Theory is an introduction to Einstein's space-bending, time-stretching theory of Relativity, first published in December 1916. Special and General relativity explain the structure of space time and provide a theory of gravitation, respectively. Einstein's theories shocked the world with their counterintuitive results, including the dissolution of absolute time. In this book, he brings a simplified form of his profound understanding of the subject to the layperson. In the words of Einstein: "The present book is intended, as far as possible, to give an ex

Einstein, Albert

2010-01-01

115

???: RELATIVE  

Full Text Available 02000 ?????? RELATIVE download Rockefeller Univ.|ftp://linkage.rockefeller.edu/software/re d)?3???????????????? Relationship estimation in affected sib pair analysis of late-onset diseas

116

Orality and Writing on San Andrés Island  

Directory of Open Access Journals (Sweden)

Full Text Available The objective of this article is to explain the characteristics of orality and literacy amid the people of San Andrés Island, and to explore the existing relationships among them. The San Andrés people come from an oral tradition with an African origin, and at the same time, they have a literacy inheritance both from England and from Spain that has defined and characterized their orality and the uses they have given to writing. This article is based on bibliographic documentation and information collected by the author during four months of ethnographic fieldwork in San Andrés Island

Juliana Botero Mejía

2007-07-01

117

SANS studies of micellar and magnetic fluids  

International Nuclear Information System (INIS)

Small-angle neutron scattering (SANS) has proved to be an excellent technique for the study of complex fluids. This article introduces SANS from the viewpoint of such studies. The use of SANS to determine the structures of concentrated micellar fluids is then discussed within the framework of current one-component macrofluid (OCM) models, and experimental examples are taken from several contemporary studies. Finally, the discussion is extended to magnetic fluids (ferrofluids) in which the neutron magnetic interaction plays an important experimental role. 25 refs., 11 figs., 1 tab

1985-06-17

118

SANS studies of micellar and magnetic fluids  

Energy Technology Data Exchange (ETDEWEB)

Small-angle neutron scattering (SANS) has proved to be an excellent technique for the study of complex fluids. This article introduces SANS from the viewpoint of such studies. The use of SANS to determine the structures of concentrated micellar fluids is then discussed within the framework of current one-component macrofluid (OCM) models, and experimental examples are taken from several contemporary studies. Finally, the discussion is extended to magnetic fluids (ferrofluids) in which the neutron magnetic interaction plays an important experimental role. 25 refs., 11 figs., 1 tab.

Hayter, J.B,

1985-08-01

119

Vabariigi aastapäev San Franciscos / Heino Valvur ; foto: Heino Valvur  

Index Scriptorium Estoniae

veebruarikuu möödus San Franciscos Eesti Vabariigi 88. aastapäeva pühitsedes: traditsiooniliselt tähistas aastapäeva San Francisco Seenioride Klubi koosviibimisega, E.E.L.K. San Francisco koguduses peeti jumalateenistus ja koosviibimine, kus noored esitasid rahvalaule, San Francisco Eesti Selts tähistas aastapäeva 25. veebruaril aktuse ja koosviibimisega

Valvur, Heino

2006-01-01

120

Relativity  

CERN Document Server

Time magazine's ""Man of the Century"", Albert Einstein is the founder of modern physics and his theory of relativity is the most important scientific idea of the modern era. In this short book, Einstein explains, using the minimum of mathematical terms, the basic ideas and principles of the theory that has shaped the world we live in today. Unsurpassed by any subsequent books on relativity, this remains the most popular and useful exposition of Einstein's immense contribution to human knowledge.With a new foreword by Derek Raine.

Einstein, Albert

2013-01-01

 
 
 
 
121

Radium 228 distribution and mixing in San Nicolas and San Pedro Basins, southern California borderland  

International Nuclear Information System (INIS)

tate mass balance equations, one for 228Ra and one for heat. Upper limits for Kz are 23 cm2/s at 1,700 m in San Nicolas and 2.8 cm2/s at 850 m in San Pedro Basin. The best estimate for Kz and wz for the deeper part of the basins are: Kz = 5-17 cm2/s and wz = 50-150 m/y in San Nicolas Basin, and Kz = 1-3 cm2/s and wz = 20-50 m/y in San Pedro Basin

1990-03-15

122

75 FR 81854 - Safety Zone; New Year's Celebration for the City of San Francisco, Fireworks Display, San...  

Science.gov (United States)

...Year's Celebration for the City of San Francisco, Fireworks...Eve Celebration for the City of San Francisco Fireworks...of the Captain of the Port or her designated representative...Year's Celebration for the City of San Francisco Fireworks...assisting the Captain of the Port San Francisco...

2010-12-29

123

33 CFR 165.1187 - Security Zones; Golden Gate Bridge and the San Francisco-Oakland Bay Bridge, San Francisco Bay...  

Science.gov (United States)

...Security Zones; Golden Gate Bridge and the San Francisco-Oakland Bay Bridge, San Francisco Bay, California. 165.1187 Section 165...Security Zones; Golden Gate Bridge and the San Francisco-Oakland Bay Bridge, San Francisco...

2009-07-01

124

Orality and Writing on San Andrés Island  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The objective of this article is to explain the characteristics of orality and literacy amid the people of San Andrés Island, and to explore the existing relationships among them. The San Andrés people come from an oral tradition with an African origin, and at the same time, they have a literacy inheritance both from England and from Spain that has defined and characterized their orality and the uses they have given to writing. This article is based on bibliographic documentation and inform...

2007-01-01

125

Double bent crystal diffractometer for SANS experiments  

International Nuclear Information System (INIS)

The medium resolution SANS diffractometer equipped with a pair of bent perfect crystals set in symmetric Bragg reflection geometry has been employed in NPI Rez in the last decade. The technical realization of a new version of the diffractometer with fully asymmetric diffraction geometry of the analyzer in combination with linear PSD was finished recently. The present paper provides a methodological comparison of both concepts as well as an example of medium resolution SANS experiment on a Vycor glass. (orig.)

1994-01-08

126

Cacao use and the San Lorenzo Olmec  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Mesoamerican peoples had a long history of cacao use—spanning more than 34 centuries—as confirmed by previous identification of cacao residues on archaeological pottery from Paso de la Amada on the Pacific Coast and the Olmec site of El Manatí on the Gulf Coast. Until now, comparable evidence from San Lorenzo, the premier Olmec capital, was lacking. The present study of theobromine residues confirms the continuous presence and use of cacao products at San Lorenzo between 1800 and 1000 BC...

Powis, Terry G.; Cyphers, Ann; Gaikwad, Nilesh W.; Grivetti, Louis; Cheong, Kong

2011-01-01

127

Relationalism  

CERN Multimedia

This article contributes to the debate of the meaning of relationalism and background independence, which has remained of interest in theoretical physics from Newton versus Leibniz through to foundational issues for today's leading candidate theories of quantum gravity. I contrast and compose the substantially different Leibniz--Mach--Barbour (LMB) and Rovelli--Crane (RC) uses of the word `relational'. Leibniz advocated primary timelessness and Mach that `time is to be abstracted from change'. I consider 3 distinct viewpoints on Machian time: Barbour's, Rovelli's and my own. I provide four expansions on Barbour's taking configuration space to be primary: to (perhaps a weakened notion of) phase space, categorizing, perspecting and propositioning. Categorizing means considering not only object spaces but also the corresponding morphisms and then functors between such pairs. Perspecting means considering the set of subsystem perspectives; this is an arena in which the LMB and Rovelli approaches make contact. By ...

Anderson, Edward

2012-01-01

128

Miocene and Pleistocene mollusks from San Andres Island (Caribbean Sea, Colombia) and Paleogeographic considerations  

International Nuclear Information System (INIS)

San Andres Island is the largest emerged portion of the oceanic archipelago of San Andres and Providencia, southwestern Caribbean Sea; it originated as a coralline atoll during Miocene times. The central and highest part of the island consists of a calcareous crest, the San Andres Formation, formed by Neogene lagoonal and reefal deposits. This crest is surrounded by a calcareous platform of Pleistocene age (San Luis Formation) which emerges only along the island coast, whereas its most part is submerged and covered by a Recent reef complex. Fossil material of molluscs from these two formations was collected in various sites throughout the island and taxonomically identified. In the four sites sampled in the San Andres Formation, material belonging to 19 gastropod and 37 bivalve species was obtained, most of them relatively well represented in other geologic formations of the Caribbean region that are stratigraphically situated between the upper Miocene and the middle Pliocene. Some elements occurring in this formation, such as Ostrea haitiensis, Meretrix dariena and Siphocypraea henekeni, were widely distributed in the Caribbean Miocene Province. In the San Luis Formation, material belonging to 18 gastropod and 11 bivalve species was obtained, most of them also represented in the Recent molluscan fauna of the region. The estimated age of this formation is Sangamonian, hence corresponding to similar formations occurring in Grand Cayman, Jamaica, Hispaniola, the Netherlands Antilles and other Caribbean islands, with which it also shows a great similarity in the composition of the molluscan fauna.

2010-01-01

129

Gravity Field Variations Associated with the Buried Geological Structures: San Marcos Fault (NE Mexico Case Study  

Directory of Open Access Journals (Sweden)

Full Text Available Gravity data are sensitive to local vertical offsets across high-angle faults, where rocks with different densities are juxtaposed. Yet high densities in some Mesozoic sedimentary rocks just above the basement may smear out the subtle gravity signatures of basement faults. At this study the gravity data processing tends to avoid ill-described “black-box” techniques. The study area is situated in the Palomas site, Cuatrociénegas region, Coahuila, NE Mexico. The San Marcos Fault is at least 300 km long and has WNW-ESE trend from the central part of Nuevo León State through Coahuila, and finally to the eastern part of Chihuahua State. Gravimetric data shows that the lowest values of free air and Bouguer anomalies are in the southern part of the area, and the highest values are in the western and central part of the area. Between these parts exists a zone of high horizontal gravity gradient. Configuration of linear elements of gravity field (gradient zones delimited the San Marcos Fault in the San Marcos valley below thickness of recent sedimentary cover. Two density models were carried out, which showed that the Cretaceous rocks are in discordant contact with the Paleo- zoic rocks that can be related to the San Marcos Fault. The density was determinate using to Nettleton’s method, which results highlight the presence of the San Marcos Fault. Density models showed that the Quaternary sediments are in direct contact with the San Marcos Fault.

Vsevolod Yutsis

2012-09-01

130

Structural characterization of semicrystalline polymer morphologies by imaging-SANS  

Science.gov (United States)

Control and optimization of polymer properties require the global knowledge of the constitutive microstructures of polymer morphologies in various conditions. The microstructural features can be typically explored over a wide length scale by combining pinhole-, focusing- and ultra-small-angle neutron scattering (SANS) techniques. Though it proved to be a successful approach, this involves major efforts related to the use of various scattering instruments and large amount of samples and the need to ensure the same crystallization kinetics for the samples investigated at various facilities, in different sample cell geometries and at different time intervals. With the installation and commissioning of the MgF2 neutron lenses at the KWS-2 SANS diffractometer installed at the Heinz Maier-Leibnitz neutron source (FRMII reactor) in Garching, a wide Q-range, between 10-4Å-1 and 0.5Å-1, can be covered at a single instrument. This enables investigation of polymer microstructures over a length scale from lnm up to 1?m, while the overall polymer morphology can be further examined up to 100?m by optical microscopy (including crossed polarizers). The study of different semi-crystalline polypropylene-based polymers in solution is discussed and the new imaging-SANS approach allowing for an unambiguous and complete structural characterization of polymer morphologies is presented.

Radulescu, A.; Fetters, L. J.; Richter, D.

2012-02-01

131

Structural characterization of semicrystalline polymer morphologies by imaging-SANS  

International Nuclear Information System (INIS)

Control and optimization of polymer properties require the global knowledge of the constitutive microstructures of polymer morphologies in various conditions. The microstructural features can be typically explored over a wide length scale by combining pinhole-, focusing- and ultra-small-angle neutron scattering (SANS) techniques. Though it proved to be a successful approach, this involves major efforts related to the use of various scattering instruments and large amount of samples and the need to ensure the same crystallization kinetics for the samples investigated at various facilities, in different sample cell geometries and at different time intervals. With the installation and commissioning of the MgF2 neutron lenses at the KWS-2 SANS diffractometer installed at the Heinz Maier-Leibnitz neutron source (FRMII reactor) in Garching, a wide Q-range, between 10?4??1 and 0.5??1, can be covered at a single instrument. This enables investigation of polymer microstructures over a length scale from lnm up to 1?m, while the overall polymer morphology can be further examined up to 100?m by optical microscopy (including crossed polarizers). The study of different semi-crystalline polypropylene-based polymers in solution is discussed and the new imaging-SANS approach allowing for an unambiguous and complete structural characterization of polymer morphologies is presented.

2012-02-08

132

Phase relation and electric properties of Pb(Li{sub 1/4}Nb{sub 3/4})O3-PbTiO3-PbZrO3 ceramics; Lithium niobusan`en-chitan san`en-zircon san`enkei jiki no soten`i to denkiteki seishitsu  

Energy Technology Data Exchange (ETDEWEB)

Solid solution ceramics in the system xPb(Li{sub 1/4}Nb{sub 3/4})O3-yPbTiO3-zPbZrO3 were prepared by the solid state reaction of powder materials. The ceramic, dielectric, and piezoelectric properties and crystal structures of the products were studied. The compositions within the ternary system were sintered much more easily than the end compositions, and a well sintered high density ceramics was obtained for the compositions near the morphotropic transformation. Piezoelectric ceramics with high relative dielectric constants, high radial coupling coefficient and low resonant resistance were obtained for the composition near the morphotropic transformation. The composition Pb(Li{sub 1/4}Nb{sub 3/4})(0.2)Ti(0.4)Zr(0.4)O3 showed the highest radial coupling coefficient. 6 refs., 12 figs., 1 tab.

Kawamura, Y.; Ouchi, H. [Shonan Institute of Technology, Kanagawa (Japan); Tanabe, K. [Hokkai Can Co. Ltd., Saitama (Japan); Matsumura, R. [Rion Electro Co., Tokyo (Japan)

1995-09-15

133

The performance of magnetic lens for focusing VCN-SANS  

Energy Technology Data Exchange (ETDEWEB)

We have developed a prototype rotating-permanent magnet sextupole lens (named rot-PMSx) for more efficient experiments with neutron beams in time of flight (ToF) mode. This lens can modulate the focusing strength over range 1.5x10{sup 4}T/m{sup 2{<=}}g'{<=}5.9x10{sup 4}T/m{sup 2}. Synchronization between the modulation and the beam pulse produces a focused beam without significant chromatic aberration. We anticipate that this lens could be utilized in focusing small angle neutron scattering (SANS) instruments for novel approach to high resolution SANS. We carried out experiments testing the principle of this lens at the very cold neutron (VCN) beamline (PF2) at Institut Laue-Langevin (ILL), France. The focused beam image size at the detector was kept constant at the same beam size as the source ({approx}3mm) over a wavelength range of 30A{<=}{lambda}{<=}48A in focal length of {approx}1.14m. The flux gain was about 12 relative to a beam without focusing, and the depth of focus was quite large. These results show the good performance of this lens and the system. Thereupon we have demonstrated the performance of this test bed for high resolution focusing of VCN-SANS for a well-studied softmatter sample; a deuterium oxide solution of Pluronic F127, an (PEO){sub 100}(PPO){sub 65}(PEO){sub 100} tri-block copolymer in deuterium oxide. The results of the focusing experiment and the focusing VCN-SANS are presented.

Yamada, M., E-mail: yamada@kyticr.kuicr.kyoto-u.ac.j [ICR, Kyoto University, Gokasho, Uji, Kyoto 611-0011 (Japan); Iwashita, Y.; Kanaya, T.; Ichikawa, M.; Tongu, H. [ICR, Kyoto University, Gokasho, Uji, Kyoto 611-0011 (Japan); Kennedy, S.J. [Bragg Institute, ANSTO, PMB 1, Lucas Heights, NSW 2234 (Australia); Shimizu, H.M.; Mishima, K.; Yamada, N.L. [KEK, 1-1, Oho, Tsukuba, Ibaraki 305-0801 (Japan); Hirota, K. [RIKEN, 2-1, Hirosawa, Wako, Saitama 351-0198 (Japan); Carpenter, J.M.; Lal, J. [Argonne National Laboratory, IL 60439 (United States); Andersen, K.; Geltenbort, P.; Guerard, B.; Manzin, G. [ILL, 6 Rue Jules Horowitz, B.P.156, F-38042 Grenoble Cedex 9 (France); Hino, M.; Kitaguchi, M. [KURRI, 2-1010, Kumatori, Osaka 590-0494 (Japan); Bleuel, M. [Reactor institut Delft TU Delft, Mekelweg 15, 2629 JB Delft (Netherlands)

2011-04-01

134

The performance of magnetic lens for focusing VCN-SANS.  

Energy Technology Data Exchange (ETDEWEB)

We have developed a prototype rotating-permanent magnet sextupole lens (named rot-PMSx) for more efficient experiments with neutron beams in time of flight (ToF) mode. This lens can modulate the focusing strength over range 1.5 x 10{sup 4} T/m{sup 2} {le} g' {le} 5.9 x 10{sup 4} T/m{sup 2}. Synchronization between the modulation and the beam pulse produces a focused beam without significant chromatic aberration. We anticipate that this lens could be utilized in focusing small angle neutron scattering (SANS) instruments for novel approach to high resolution SANS. We carried out experiments testing the principle of this lens at the very cold neutron (VCN) beamline (PF2) at Institut Laue-Langevin (ILL), France. The focused beam image size at the detector was kept constant at the same beam size as the source ({approx} 3 mm) over a wavelength range of 30 {angstrom} {le} {lambda} {le} 48 {angstrom} in focal length of {approx} 1.14 m. The flux gain was about 12 relative to a beam without focusing, and the depth of focus was quite large. These results show the good performance of this lens and the system. Thereupon we have demonstrated the performance of this test bed for high resolution focusing of VCN-SANS for a well-studied softmatter sample; a deuterium oxide solution of Pluronic F127, an (PEO){sub 100}(PPO){sub 65}(PEO){sub 100} tri-block copolymer in deuterium oxide. The results of the focusing experiment and the focusing VCN-SANS are presented.

Yamada, M.; Iwashita, Y.; Kanaya, T.; Ichikawa, M.; Tongu, H.; Kennedy, S. J.; Shimizu, H. M.; Mishima, K.; Yamada, N. L.; Hirota, K.; Carpenter, J..; Lal, J.; Anderson, K.; Geltenbort, P.; Guerard, B.; Manzin, G.; Hino, M.; Kitaguchi, M.; Bleuel, M.; NOP Collaboration (Biosciences Division); ( AES); ( MSD); (Kyoto Univ.); (Bragg Inst.); (KEK, 1-1); (RIKEN, 2-1, Hirosawa, Wako); (ILL); (KURRI); (Reactor Inst.)

2011-01-01

135

Long Return Periods for Earthquakes in San Gorgonio Pass and Implications for Large Ruptures of the San Andreas Fault in Southern California  

Science.gov (United States)

The largest discontinuity in the surface trace of the San Andreas fault occurs in southern California at San Gorgonio Pass. Here, San Andreas motion moves through a 20 km-wide compressive stepover on the dextral-oblique-slip thrust system known as the San Gorgonio Pass fault zone. This thrust-dominated system is thought to rupture during very large San Andreas events that also involve strike-slip fault segments north and south of the Pass region. A wealth of paleoseismic data document that the San Andreas fault segments on either side of the Pass, in the San Bernardino/Mojave Desert and Coachella Valley regions, rupture on average every ~100 yrs and ~200 yrs, respectively. In contrast, we report here a notably longer return period for ruptures of the San Gorgonio Pass fault zone. For example, features exposed in trenches at the Cabezon site reveal that the most recent earthquake occurred 600-700 yrs ago (this and other ages reported here are constrained by C-14 calibrated ages from charcoal). The rupture at Cabezon broke a 10 m-wide zone of east-west striking thrusts and produced a >2 m-high scarp. Slip during this event is estimated to be >4.5 m. Evidence for a penultimate event was not uncovered but presumably lies beneath ~1000 yr-old strata at the base of the trenches. In Millard Canyon, 5 km to the west of Cabezon, the San Gorgonio Pass fault zone splits into two splays. The northern splay is expressed by 2.5 ± 0.7 m and 5.0 ± 0.7 m scarps in alluvial terraces constrained to be ~1300 and ~2500 yrs old, respectively. The scarp on the younger, low terrace postdates terrace abandonment ~1300 yrs ago and probably correlates with the 600-700 yr-old event at Cabezon, though we cannot rule out that a different event produced the northern Millard scarp. Trenches excavated in the low terrace reveal growth folding and secondary faulting and clear evidence for a penultimate event ~1350-1450 yrs ago, during alluvial deposition prior to the abandonment of the low terrace. Subtle evidence for a third event is poorly constrained by age data to have occurred between 1600 and 2500 yrs ago. The southern splay at Millard Canyon forms a 1.5 ± 0.1 m scarp in an alluvial terrace that is inset into the lowest terrace at the northern Millard site, and therefore must be San Gorgonio Pass fault zone. The evidence for two older earthquakes is less complete but suggests that they are similar in style and magnitude to the most recent event. The available data therefore suggest that the San Gorgonio Pass fault zone has produced three large (~6 m) events in the last ~2000 yrs, a return period of ~700 yrs assuming that the next rupture is imminent. We prefer a model whereby a majority of San Andreas fault ruptures end as they approach the Pass region from the north or the south (like the Wrightwood event of A.D. 1812 and possibly the Coachella Valley event of ~A.D. 1680). Relatively rare (once-per-millennia?), through-going San Andreas events break the San Gorgonio Pass fault zone and produce the region's largest earthquakes.

Yule, J.; McBurnett, P.; Ramzan, S.

2011-12-01

136

Free treatment, rapid malaria diagnostic tests and malaria village workers can hasten progress toward achieving the malaria related millennium development goals: the Médecins Sans Frontières experience from Chad, Sierra-Leone and Mali  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Halving the burden of malaria by 2015 and ensuring that 80% of people with malaria receive treatment is among the health related targets of the Millennium Development Goals (MDGs). Despite political momentum toward achieving this target, progress is slow and many with malaria (particularly in poor and rural communities in Africa) are still without access to effective treatment. Finding ways to improve access to anti-malarial treatment in Africa is essential to achieve the malaria related and ...

2011-01-01

137

SANS2-high-resolution small-angle diffractometer-reference instrument WBS 1.7.9  

International Nuclear Information System (INIS)

SANS2 is a general-purpose small-angle neutron scattering spectrometer providing relatively high resolution and relatively low minimum Q values. Figure 1 provides a schematic representation of SANS2, and Table 1 gives the parameters for this instrument. Because of the broad Q range sampled in a single measurement, this instrument will be particularly useful in the study of time-dependent phenomena, such as deformation/orientation and phase transformations in complex fluids and polymers

1999-01-01

138

Inteligencia emocional y vínculo laboral en trabajadores del Centro San Camilo / Emotional intelligence and engagement in San Camilo Centre workers  

Scientific Electronic Library Online (English)

Full Text Available SciELO Spain | Language: Spanish Abstract in spanish Las organizaciones están comprometidas desde hace tiempo con la promoción de la salud y del bienestar de los trabajadores. Con este referente se realizó el presente estudio; el objetivo fue describir y analizar las asociaciones que existen entre las variables inteligencia emocional y engagement. La [...] población fueron 150 trabajadores del Centro San Camilo. Los instrumentos de evaluación utilizados son la escala de Inteligencia Emocional (EIE-33), la escala de Inteligencia Emocional (EIE-25), el Trait Meta-Mood Scale (TMMS-24) y cuestionario de Utrecht Work Engagement Scale (UWES). Es un estudio descriptivo correlacional. En los trabajadores del Centro San Camilo existe asociación entre la inteligencia emocional y el engagement. Así la inteligencia emocional, entendida como la capacidad para adquirir habilidades o competencias para la adaptación de las demandas profesionales, potencia un estado mental positivo relacionado con el trabajo y ello repercute en la calidad asistencial y en la salud de la población atendida. Abstract in english For some time organizations are committed with health promotion and workers welfare. Under this concern this study has been conducted; the aim was to describe and analyse the existing associations between emotional intelligence and engagement variables. The population were 150 workers from San Camil [...] o Centre. The assessment instruments used were the scale of Emotional Intelligence (EIE-33), the scale of Emotional Intelligence (EIE-25), the Trait Meta-Mood Scale (TMMS-25) and the questionnaire of Utrecht Work Engagement Scale (UWES). It is a descriptive correlational study. In San Camilo Centre workers there is association between emotional intelligence and engagement. Emotional intelligence, understood as the capacity to acquire skills or competencies for the adaptation to professional demands thus enhances a positive mental state work-related and this affects the quality of care and the assisted population health.

Cristina, Liébana Presa; M.ª Elena, Fernández Martínez; José Carlos, Bermejo Higuera; M.ª Rosa, Carabias Maza; M.ª Aurora, Rodríguez Borrego; Marta, Villacieros Durbán.

139

San Francisco e a nova economia do desejo / San Francisco and the new economy of desire  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese Este artigo apresenta reflexões preliminares de uma pesquisa desenvolvida durante sete meses em San Francisco, Estados Unidos, a qual se associa a outra em andamento na capital paulista desde 2007. Busca sintetizar como o uso de sites e aplicativos em busca de parceiros amorosos e sexuais constitui [...] um fenômeno de transformação tecnológica e comportamental que se relaciona com profundas transformações econômicas no trabalho e na organização do espaço urbano. Assim reconstitui historicamente e analisa em termos sociológicos essas conexões em uma das cidades em que elas são mais visíveis. O objetivo é trazer elementos históricos, etnográficos, teóricos e conceituais para compreender a nova realidade sociotecnológica em que vivemos, que tem transformado o erotismo, a sexualidade e a moral a ela relacionada. Abstract in english This paper presents preliminary reflections about a research conduced during seven months in San Francisco, USA, which is also associated to one developed in São Paulo, Brazil, since 2007. It aims to synthetize how the use of sites and apps in the search for love and sexual partners constitutes a te [...] chnological and comportamental phenomenon associated with deep economic, work and urban transformations. Therefore, it reconstitutes historically these connections and analyses them sociologically in one of the cities where they are more visible. The objective is to bring historical, ethnographic, theoretical and conceptual elements to understand the new socio-technical reality, in which we live, the same that has transformed the sphere of eroticism, of sexuality and of the morality related to them.

Richard, Miskolci.

140

Particularidades del escurrimiento de la cuenca cubana San Juan / Runoff particularities of Cuban basin San Juan  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish Abstract in spanish La cuenca San Juan, dividida en las subcuencas San Juan, San Agustín y Cañas, difiere totalmente de otras cuencas de la provincia. Los altos valores de los módulos del escurrimiento medio de los ríos y sus distribuciones dentro del año e hiperanual confirman esta particularidad, la cual fue comproba [...] da con las investigaciones complementarias realizadas durante el periodo seco del 2011. El análisis del comportamiento del escurrimiento de la subcuenca San Agustín-Cañas, incluyendo el funcionamiento del trasvase MatanzasMayabeque, conllevó a los decisores a desarrollar un programa de gestión integrada de los recursos hídricos de esta cuenca. Abstract in english The San Juan basin, divided into sub-basins San Juan, San Agustín and Cañas, is completely different from other basins in the province. The high modular values of average river runoff, its within-year distribution and its overyear distribution confirm this peculiarity, which was checked with additio [...] nal research conducted during the dry period of 2011. The behavior of the subbasin runoff of San Agustín-Cañas, including the operation of the water diversion canal MatanzasMayabeque, led the decision makers to develop an integrated water resources management program for this basin.

Katia Luisa, Rosario Rodríguez; Viera, Petrova Nicolaevna; Alberto, Cuéllar Valenzuela; Dailene, Acosta Freyre; Armando, Hernández Valdés; Haydée, Llanusa Ruiz.

 
 
 
 
141

Calidad de Vida Relacionada con Salud Oral en Mayores de 14 Años en la Comunidad San Juan Bautista, Isla Robinson Crusoe, Chile / Quality of Life Related to Oral Health in Subjects 14 Years or Older, San Juan Bautista Community, Robinson Crusoe Island, Chile  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish Abstract in spanish El aislamiento geográfico y condiciones medioambientales hacen a la población de Juan Fernández altamente vulnerable, siendo relevante conocer la calidad de vida relacionada con salud oral. Se realizó un estudio transversal en 137 habitantes mayores de 14 años. Se aplicó OHIP-14 para medir calidad d [...] e vida relacionada con salud oral previo consentimiento informado. El análisis estadístico fue realizado STATA 12.0. Un 51,8% es población femenina, con una edad media de 42,26 (DE 16,5). Un 91,97%, percibe que la salud oral afecta su calidad de vida, siendo levemente mayor en mujeres. Las molestias psicológicas son una manifestación en 80,29% de los encuestados. Un 75,91% percibe incomodidad por dolor en su boca, 62,77% manifiesta problemas de incapacidad psicológica. Existe mayor impacto en la calidad de vida relacionada con salud oral a medida que aumenta la edad. Por cada año de vida, el valor del OHIP-14 aumenta 0,07 (IC:95% 0,04­0,1). Los resultados obtenidos sugieren la necesidad de generar políticas públicas que consideren la salud oral desde una perspectiva integral, con énfasis en poblaciones altamente vulnerables considerando la mejora en la calidad de vida como un resultado a esperar. Abstract in english Geographic isolation and environmental conditions make the population of Robinson Crusoe Island, in the Juan Fernández archipielago highly vulnerable. It is therefore relevant to know the quality of life related to oral health (QOLRTO). In this report a cross sectional study in 137 inhabitants over [...] 14 years of age was carried out. OHIP-14 was applied to measure QOLRTO, after informed consent was obtained. Statistical analysis was made in STATA 12.0. The population is 51.8% female, mean age 42.26 (SD 16.5) being similar in both sexes. Of the subjects studied, 91.97% perceived that oral health affects their quality of life, being slightly higher in women. Psychological distress was a manifestation in 80.29% of subjects, while 75.91% perceived discomfort and mouth pain, and 62.77% reported psychological disability issues. There is a greater impact of oral health issues with increasing age. For each year of life, the value of the OHIP-14 increased 0.07 (CI 95%, 0.04 to 0.1). The results suggest that public health policies that include a comprehensive oral health perspective, with emphasis on highly vulnerable populations should be considered.

Josefina, Aubert; Sergio, Sanchéz; René, Castro; María José, Monsalves; Paulina, Castillo; Patricia, Moya.

142

Trace elements in Corbicula fluminea from the San Joaquin River, California.  

Science.gov (United States)

(i) Trace element concentrations in soft tissue of the benthic bivalve, Corbicula fluminea, from the San Joaquin River and its major tributaries were examined during the primary irrigation season in relation to the spatial variation in concentrations of major, minor and trace constituents in riverwater and sediments. (ii) Selenium concentrations in Corbicula from perennial flow reaches of the San Joaquin River and its major tributaries varied directly with the solute (less than or equal to 0.45 microns) Se concentrations of riverwater. Elevated concentrations occurred in clams from sites with substantial discharge originating as subsurface drainage and irrigation return flows. Both tissue and solute Se concentrations declined from June through the end of the primary irrigation season. (iii) Arsenic concentrations in Corbicula from perennial flow reaches of the San Joaquin River varied directly with the HNO3-extractable (pH 2) As:Fe ratio of suspended matter, providing evidence that sorption to oxyhydroxide surfaces is an important control on the biological availability of As. However, Corbicula from several tributaries draining alluvium derived from the Sierra Nevada had lower As concentrations than would be predicted by the relation developed for perennial flow sites of the San Joaquin River. Arsenic concentrations in Corbicula from the Tuolumne and Merced Rivers and upstream reaches of the San Joaquin River were higher than in clams from the downstream perennial flow reaches of the San Joaquin River. Concentrations of As in clams from downstream perennial flow reaches of the San Joaquin River increased from June through the end of the primary irrigation season. (iv) Mercury concentrations in Corbicula were elevated in upstream reaches of the San Joaquin River, in the Merced and Tuolumne Rivers, and in tributaries draining the Coast Ranges. Mean Cd and Cu concentrations in Corbicula were elevated in the Merced and Tuolumne Rivers, Orestimba Creek and a perennial flow reach of the San Joaquin River which receives water directly from the Delta Mendota Canal. Concentrations of Ni in clams from the San Joaquin River decreased downstream of the Delta Mendota Pool. (v) Boron and Mo were not accumulated by Corbicula despite high solute concentrations (means as high as 2960 micrograms Bl-1 and 9 micrograms Mol-1) in riverwater during the primary irrigation season. This bivalve may not be an appropriate bioindicator of B and Mo enrichment. Concentrations of Cr, Pb, Ag, V and Zn in Corbicula exhibited little geographic variability in the drainage. (vi) Regression analysis revealed no clear evidence of synergistic or antagonistic interactions among As, Cd, Cu, Hg, Ni and Se in their uptake by Corbicula. PMID:2084841

Leland, H V; Scudder, B C

1990-11-01

143

78 FR 19103 - Safety Zone; Spanish Navy School Ship San Sebastian El Cano Escort; Bahia de San Juan; San Juan, PR  

Science.gov (United States)

...School Ship San Sebastian El Cano, a public vessel, and during...School Ship San Sebastian El Cano. The inbound escort is scheduled...School Ship San Sebastian El Cano and 21 gun salute. The outbound...rule is effective from 8 a.m. on April 6, 2013, until...

2013-03-29

144

Compact High Resolution SANS using very cold neutrons (VCN-SANS)  

International Nuclear Information System (INIS)

SANS (Small Angle Neutron Scattering) is a popular method for elucidation of nano-scale structures. However science continually challenges SANS for higher performance, prompting exploration of ever-more exotic and expensive technologies. We propose a compact high resolution SANS, using very cold neutrons, magnetic focusing lens and a wide-angle spherical detector. This system will compete with modern 40 m pinhole SANS in one tenth of the length, matching minimum Q, Q-resolution and dynamic range. It will also probe dynamics using the MIEZE method. Our prototype lens (a rotating permanent-magnet sextupole), focuses a pulsed neutron beam over 3-5 nm wavelength and has measured SANS from micelles and polymer blends. (authors)

2010-09-15

145

Magmatism and mineralization ages from northeast area of La Sierra de San Luis, Argentina  

International Nuclear Information System (INIS)

Three igneous rock groups, characterized as pre, sin and post-kinematics, have intruded the crystalline basement of Sierra de San Luis, Argentina. The ore deposits are associated with Devonian to Carboniferous epizonal granite stocks and batholiths in an area underlain by metamorphic rocks. This granitoids are characterized as post-kinematics magmatism. Model lead ages on the ore deposits (338,8 - 292,1 Ma) are strongly supported by K-Ar ages of the intrusives. The bulk of the north Sierra de San Luis ore deposits are genetically related to late Carboniferous granite plutons. The ore bodies are tungsten veins with greisen envelopes, lead veins, epithermal fluorite veins and REE and Th deposit. A generalized scheme of ore bodies related to granites is proposed. The ore deposits and their lithotectonic setting are characteristic of Gondwana metallogenetic Epoch in the Sierra de San Luis (au)

2001-10-01

146

Displacement along the Manix fault, San Bernardino County, California  

Energy Technology Data Exchange (ETDEWEB)

The Mojave block is a Cenozoic age feature that is presumed to have originated by movement related to the San Andreas and Garlock fault systems. Most of the rock units in this region underlie a veneer of Quaternary alluvium and range in age from Precambrian to Miocene. The complex structural geology of this region has been notoriously difficult to comprehend. In recent years, however, the regional fault pattern in the Mojave block has become better understood. This article describes the displacement of one Mojave block fault, the Manix fault. Bolded terms within the text are placed in a glossary at the end of the article.

Meek, N. (California State Univ., San Bernardino (United States)); Battles, D.A. (Georgia Southern Univ., Statesboro (United States))

1991-02-01

147

78 FR 54487 - YP Western Directory LLC, San Francisco Division, Publishing Operations Group, YP Subsidiary...  

Science.gov (United States)

...326; TA-W-82,326A] YP Western Directory LLC, San Francisco Division, Publishing...San Francisco, California; YP Western Directory LLC, San Francisco Division, Publishing...applicable to workers of YP Western Directory LLC, San Francisco Division,...

2013-09-04

148

Gas-Oil Relative Permeability and Residual Oil Saturation as Related to Displacement Instability and Dimensionless Numbers Étude de la perméabilité relative gaz-huile et de la saturation en huile résiduelle dans le cas d’une instabilité de déplacement et des nombres sans dimension s’y rapportant  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Displacement experiments of the gas-oil system are performed on long core scale models by varying the petrophysical properties and flowing conditions. Experiments are conducted in situations where capillary, gravity and viscous forces are comparable. From oil production history and picture analysis, the threshold for the stability is determined. The experimental findings are comparable to the results of a gradient percolation theory. The effect of destabilized front velocity on relative ...

Rostami B.; Kharrat R.; Ghotbi C.; Tabatabaie S.H.

2009-01-01

149

Access USGS: San Francisco Bay and Delta  

Science.gov (United States)

The San Francisco Bay and Delta Ecosystem Program of the US Geological Survey has been underway since 1995. This Webpage offers a host of information on USGS research in the San Francisco Bay and Delta regions (see Overview). Organized by subject area, the site features a new Water Information section in addition to sections describing research on biology (exotic species, primary production), wetlands (change and restoration), hazards (coastal erosion, landslides, earthquakes), and land use (urban growth). In addition, the site provides real-time data, geologic maps, and digital maps (topos, aerial photos, and elevations). A collection of links and a What's New section round out the site.

150

Lower San Fernando corrugated metal pipe failure  

Energy Technology Data Exchange (ETDEWEB)

During the January 17, 1994, Northridge earthquake, a 2.4 m diameter corrugated metal pipe was subjected to 90 m of extensive lateral crushing failure at the Lower San Fernando Dam. The dam and outlet works were reconstructed after the 1971 San Fernando Earthquake. In 1994, the dam underwent liquefaction upstream of the reconstructed berm. The pipe collapsed on the west side of the liquefied zone and a large sinkhole formed over the drain line. The failure of this drain line provides a unique opportunity to study the seismic response of buried drains and culverts.

Bardet, J.P. [Univ. of Southern California, Los Angeles, CA (United States); Davis, C.A. [Los Angeles Dept. of Water and Power, CA (United States)

1995-12-31

151

Urban Stormwater Management and Technology: Case Study in San Francisco.  

Science.gov (United States)

This report is the fourth in a series on urban stormwater and combined sewer overflow (CSO) management. It presents San Francisco's experience with the planning and design of CSO control and treatment facilities. The development of the San Francisco combi...

J. A. Lager R. K. Advani E. M. Gowen

1981-01-01

152

Proprietes optiques lineaires et non-lineaires de nanocomposites metal/dielectrique anisotropes  

Science.gov (United States)

In this thesis, we present the development and the analysis of advanced fabrication techniques allowing for the precise control of the synthesis of nanocomposites formed of gold nanoparticles embedded in a silica matrix. We have developed a three-step technique allowing us to fabricate nanocomposite films with particles of controlled size and shape. (1) The first paper describes the sample fabrication method and their linear optical properties. The nanocomposite materials are first deposited using a PECVD/sputtering hybrid technique. In order to increase the nanoparticule size, the sample are then submitted to a 900°C thermal annealing for several hours. The modification technique used to change the particles from spheres to ellipsoids is described. This technique consists of irradiating the samples using high energy copper ions (30 MeV). The resulting structure is anisotropic since the particles' long axis are aligned with the irradiation direction. This is the first use of this technique for samples with gold particles embedded in a solid matrix. The details of the ellipsometric and spectrophotometric characterization are discussed and the linear optical properties of these materials measured by these techniques are presented. These measurements allow one to find the nanostructural parameters of the layer (gold concentration, particle size, thickness and surface roughness) from the complex refractive index of the layer. We demonstrate the effect of the annealing and the irradiation on the optical properties of the nanocomposite system notably on the control of the characteristics of the SPR absorption band. Thus, we show that the thermal annealing induce a red-shift in the SPR position while the irradiation step corresponds to a blue-shift. We also demonstrate that a final post-irradiation annealing treatment allows to re-form spherical nanoparticles. (2) The second paper is focused on the nonlinear optical properties of Au/SiO2 nanocomposites. Polarized P-Scan et Z-Scan techniques adapted for the measurements of anisotropic samples are described. The P-Scan technique linearity in the context of high power measurements of nanocomposite samples is discussed by comparing several models (model of saturable absorption, correction for linear absorption, correction for linear and nonlinear absorption). Isotropic (spheres) and anisotropic (nanoellipsoids) nanocomposite samples were measured by the Z-Scan and P-Scan techniques. The measurements of isotropic samples yield a nonlinear absorption coefficient value of --4.8x10 -2 cm/W while the measurements of the nonlinear absorption coefficient of anisotropic samples yield values ranging between --0.9x10 -2 cm/W and --3.0x10-2 cm/W depending on the polarization direction of the measurement light. This change in polarization corresponds to a variation of the excitation of the nanoellipsoids short and long axes. Using a simple geometrical model, we show that the nonlinear absorption coefficient measured for a polarization along the ellipsoids short or long axis is equal respectively to --0.9x10-2 cm/W and --5.1x10-2 cm/W. (3) The third paper deals with improvements to the currently used model for the nonlinear response of nanocomposite samples. These modifications allows one to model high metal concentration samples and/or samples containing anisotropic particles. The introduction of the depolarization factor in the calculation of the effective nonlinear susceptibility of nanocomposites from the generalized Maxwell-Garnett equation allows for the addition of a parameter which depends on the geometry of the nanoparticles. The modified model for high gold concentration is compared to the traditional model. We show that the use of the modified model is of prime importance for gold volume fractions exceeding 1%. The effect of each parameter of the model is evaluated and discussed (metal concentration, metal dielectric constant, matrix dielectric constant, metal nonlinear susceptibility). We demonstrate that each fabrication parameter must be carefully choosen as a function of the par

Lamarre, Jean-Michel

153

33 CFR 110.224 - San Francisco Bay, San Pablo Bay, Carquinez Strait, Suisun Bay, Sacramento River, San Joaquin...  

Science.gov (United States)

...anchoring. (2) No vessel may permanently moor in areas adjacent to the San Joaquin River...Government chart. (5) No vessel may moor, anchor, or tie up to any pier, wharf...supervision may go alongside or in any manner moor to any Government-owned vessel,...

2010-07-01

154

Radar image San Francisco Bay Area, California  

Science.gov (United States)

The San Francisco Bay Area in California and its surroundings are shown in this radar image from the Shuttle Radar Topography Mission (SRTM). On this image, smooth areas, such as the bay, lakes, roads and airport runways appear dark, while areas with buildings and trees appear bright. Downtown San Francisco is at the center and the city of Oakland is at the right across the San Francisco Bay. Some city areas, such as the South of Market district in San Francisco, appear bright due to the alignment of streets and buildings with respect to the incoming radar beam. Three of the bridges spanning the Bay are seen in this image. The Bay Bridge is in the center and extends from the city of San Francisco to Yerba Buena and Treasure Islands, and from there to Oakland. The Golden Gate Bridge is to the left and extends from San Francisco to Sausalito. The Richmond-San Rafael Bridge is in the upper right and extends from San Rafael to Richmond. Angel Island is the large island east of the Golden Gate Bridge, and lies north of the much smaller Alcatraz Island. The Alameda Naval Air Station is seen just below the Bay Bridge at the center of the image. Two major faults bounding the San Francisco-Oakland urban areas are visible on this image. The San Andreas fault, on the San Francisco peninsula, is seen on the left side of the image. The fault trace is the straight feature filled with linear reservoirs, which appear dark. The Hayward fault is the straight feature on the right side of the image between the urban areas and the hillier terrain to the east.This radar image was acquired by just one of SRTM's two antennas and, consequently, does not show topographic data, but only the strength of the radar signal reflected from the ground. This signal, known as radar backscatter, provides insight into the nature of the surface, including its roughness, vegetation cover and urbanization. The overall faint striping pattern in the images is a data processing artifact due to the preliminary nature of this image product. These artifacts will be removed after further data processing.This image was acquired by the Shuttle Radar Topography Mission (SRTM) aboard the Space Shuttle Endeavour, launched on February 11,2000. SRTM uses the same radar instrument that comprised the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) that flew twice on the Space Shuttle Endeavour in 1994. The mission is designed to collect three-dimensional measurements of the Earth's surface. To collect the 3-D data, engineers added a 60-meter-long (200-foot) mast, installed additional C-band and X-band antennas, and improved tracking and navigation devices. The mission is a cooperative project between the National Aeronautics and Space Administration (NASA), the National Imagery and Mapping Agency (NIMA) of the U.S. Department of Defense (DoD), and the German and Italian Space agencies. It is managed by NASA's Jet Propulsion Laboratory, Pasadena, CA, for NASA's Earth Science Enterprise, Washington, DC.Size: 38 km (24 miles) by 71 km (44 miles) Location: 37.7 deg. North lat., 122.2 deg. West lon. Orientation: North to the upper right Original Data Resolution: 30 meters (99 feet) Date Acquired: February 16, 2000

2000-01-01

155

76 FR 15216 - Security Zones; Cruise Ships, Port of San Diego, CA  

Science.gov (United States)

...San Diego port area landward of the sea buoys bounding the Port of San Diego. This final...the San Diego port area inside the sea buoys bounding the Port of San Diego would provide...the San Diego port area inside the sea buoys bounding the Port of San Diego....

2011-03-21

156

75 FR 82243 - Security Zones; Moored Cruise Ships, Port of San Diego, CA  

Science.gov (United States)

...the San Diego port area inside the sea buoys bounding the Port of San Diego. This temporary...the San Diego port area inside the sea buoys bounding the Port of San Diego would provide...the San Diego port area inside the sea buoys bounding the Port of San Diego....

2010-12-30

157

76 FR 4833 - Security Zones; Cruise Ships, Port of San Diego, CA  

Science.gov (United States)

...San Diego port area landward of the sea buoys bounding the Port of San Diego. This notice...the San Diego port area inside the sea buoys bounding the Port of San Diego would provide...the San Diego port area inside the sea buoys bounding the Port of San Diego....

2011-01-27

158

27 CFR 9.157 - San Francisco Bay.  

Science.gov (United States)

...2010-04-01 2010-04-01 false San Francisco Bay. 9.157 Section 9.157 ...Viticultural Areas § 9.157 San Francisco Bay. (a) Name. The name of the...area described in this section is âSan Francisco Bay.â (b) Approved Maps ....

2010-04-01

159

27 CFR 9.194 - San Antonio Valley.  

Science.gov (United States)

...2010-04-01 2010-04-01 false San Antonio Valley. 9.194 Section 9.194...American Viticultural Areas § 9.194 San Antonio Valley. (a) Name . The name of...area described in this section is âSan Antonio Valleyâ. For purposes of part 4 of...

2010-04-01

160

Psychiatric Disorders and Substance Use in Homeless Youth: A Preliminary Comparison of San Francisco and Chicago  

Directory of Open Access Journals (Sweden)

Full Text Available Youth homelessness is a growing problem in the United States. The experience of homelessness appears to have numerous adverse consequences, including psychiatric and substance use disorders. This study compared the frequencies of psychiatric disorders, including substance use, between homeless youth (18–24 years-old in San Francisco (N = 31 and Chicago (N = 56. Subjects were administered the Mini International Neuropsychiatric Interview (M.I.N.I. to assess DSM-IV-TR diagnoses and substance use disorders. Eighty-seven percent of the San Francisco youth, and 81% of the Chicago youth met criteria for at least one M.I.N.I. psychiatric diagnosis. Nearly two-thirds of the youth in both samples met criteria for a mood disorder. Approximately one-third met criteria for an anxiety disorder. Thirty-two percent of the San Francisco sample and 18% of the Chicago met criteria for Antisocial Personality Disorder. Approximately 84% of the San Francisco youth and 48% of the Chicago youth met criteria for a substance-related disorder, and more substances were used by San Francisco youth. In conclusion, the high rate of psychiatric disorders in homeless youth provides clear evidence that the mental health needs of this population are significant. Implications are discussed.

Ernika G. Quimby

2012-08-01

 
 
 
 
161

Lichens as air pollution indicators in the metropolitan area of San Jose, Costa Rica  

Energy Technology Data Exchange (ETDEWEB)

Lichens were used as air pollution indicators in the metropolitan area of San Jose, Costa Rica. Those parts of the city where pollution is greatest were also the ones where lichens suffered the most, and in some extreme cases the thallus died after 8 months of exposure. Besides this transplant experiment, the coverage of Parmelia lichens on the bark of several tree species was determined in some areas of the city. The results of these observations suggest that the city of San Jose has three different kinds of air environment in relation to lichen survival: normal, transitional and desertic.

Mendez, O.I.; Fournier, L.A.

1980-07-01

162

Environmental geologic analysis of Rio de las Taguas basin Departmento Iglesia San Juan Argentina  

International Nuclear Information System (INIS)

A mineral environmental research project results where it has been located in Rio de las Taguas basin, Departamento Iglesia, Provincia de San Juan, Argentina. It has been placed in frontal Andean mountain in San Juan. In this geographic framework has been developed Au and Ag mineral project in order the world scale. The aim of this article is has been related the mineral and geological units bet wen the basin chemistry as well as to carry out future measurements mines impacts in this area. (author)

2007-10-10

163

Saya San and the Burmese Rebellion.  

Science.gov (United States)

This account of the Burmese Rebellion of 1930-1931, and the role of its leader, Saya San, emphasizes the importance of traditional elements in what is commonly regarded as a nationalist uprising. The document holds that the apparently nationalistic symbol...

R. L. Solomon

1969-01-01

164

San Nicolas Island Barge Landing Site Survey.  

Science.gov (United States)

A bathymetric survey of the YFU, barge landing site area on San Nicolas Island, California, has shown that a narrow channel of sufficient width and clear of bottom obstacles exists into the beach to permit safe operation of the vessel under wind and sea c...

1978-01-01

165

Simulations of the 1906 San Francisco Earthquake  

Energy Technology Data Exchange (ETDEWEB)

Simulations of the Great 1906 San Francisco earthquake are being performed as part of the event's centenary. LLNL is participating in a large effort to study this event and possible consequences if the event were to happen today. This document is meant to describe our efforts to others participating in the project.

Rodgers, A; Petersson, A; Tkalcic, H

2005-12-16

166

Are Fibre Channel SANs a Commodity?  

Science.gov (United States)

The goal of this work is to evaluate the feasibility of putting together a Fibre Channel Storage Area Network with heterogeneous hardware running both open-source and commercial operating systems. Adherence to the Fibre Channel Specification is supposed to guarantee interoperability in such an environment. We also want to evaluate how difficult it might be to put together a SAN using open-source components. While all the commercial vendors provide Fibre Channel support, this comes at a cost, e.g., not only O/S and drivers, but usually an expensive support contract. The open-source model could lower the cost of building and maintaining a SAN. Of course, for this to be the case, the open-source platforms would have to provide the functionality to construct a SAN. We are assembling a Fibre Channel SAN from heterogeneous hardware (i386, alpha, sparc) running *BSD, Linux, Tru64, NT and Solaris operating systems. We are running several tests to investigate the level of Fibre Channel support provided by each OS. Our current testbed is specified in the table below. Currently, it only contains open-source platforms. We plan to add a PC running OpenBSD, as well as the following commercial systems: Sun Ultra 1/Solaris, DEC AlphaServer 4000/Tru64 Unix, Pentium Pro PC/Windows NT.

Becker, Jeff; Jacob, Matt; Biegel, Bryan A. (Technical Monitor)

2000-01-01

167

Polymer research using KUR-SANS  

Energy Technology Data Exchange (ETDEWEB)

KUR-SANS has been used for researchs of polymers with inhomogeneous structures. It was revealed that the fractal structure in microcrystalline cellulose is stable in the temperature range between 25 and 80degC. It was also revealed that the polyacrylamide gel has a fractal structure and that the fractal dimension increases with the cross link points. (author)

Sugiyama, Masaaki [Kyushu Univ., Fukuoka (Japan). Dept. of Physics; Hara, Kazuhiro; Hiramatsu, Nobuyasu; Nakamura, Atsushi; Iijima, Hideki

1998-07-01

168

Polymer research using KUR-SANS  

International Nuclear Information System (INIS)

KUR-SANS has been used for researches of polymers with inhomogeneous structures. It was revealed that the fractal structure in microcrystalline cellulose is stable in the temperature range between 25 and 80degC. It was also revealed that the polyacrylamide gel has a fractal structure and that the fractal dimension increases with the cross link points. (author)

1998-07-01

169

San Jose, California: Solar in Action (Brochure)  

Energy Technology Data Exchange (ETDEWEB)

This brochure provides an overview of the challenges and successes of San Jose, CA, a 2008 Solar America City awardee, on the path toward becoming a solar-powered community. Accomplishments, case studies, key lessons learned, and local resource information are given.

2011-10-01

170

Groundwater quality in the San Fernando--San Gabriel groundwater basins, California  

Science.gov (United States)

Groundwater provides more than 40 percent of California's drinking water. To protect this vital resource, the State of California created the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The Priority Basin Project of the GAMA Program provides a comprehensive assessment of the State's groundwater quality and increases public access to groundwater-quality information. The San Fernando and San Gabriel groundwater basins constitute one of the study units being evaluated.

Kulongoski, Justin T.; Belitz, Kenneth

2012-01-01

171

ASTER Images San Francisco Bay Area  

Science.gov (United States)

This image of the San Francisco Bay region was acquired on March 3, 2000 by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA's Terra satellite. With its 14 spectral bands from the visible to the thermal infrared wavelength region, and its high spatial resolution of 15 to 90 meters about 50 to 300 feet ), ASTER will image Earth for the next 6 years to map and monitor the changing surface of our planet.Image: This image covers an area 60 kilometers (37 miles) wide and 75 kilometers (47 miles) long in three bands of the reflected visible and infrared wavelength region. The combination of bands portrays vegetation in red, and urban areas in gray. Sediment in the Suisun Bay, San Pablo Bay, San Francisco Bay, and the Pacific Ocean shows up as lighter shades of blue. Along the west coast of the San Francisco Peninsula, strong surf can be seen as a white fringe along the shoreline. A powerful rip tide is visible extending westward from Daly City into the Pacific Ocean. In the lower right corner, the wetlands of the South San Francisco Bay National Wildlife Refuge appear as large dark blue and brown polygons. The high spatial resolution of ASTER allows fine detail to be observed in the scene. The main bridges of the area (San Mateo, San Francisco-Oakland Bay, Golden Gate, Richmond-San Rafael, Benicia-Martinez, and Carquinez) are easily picked out, connecting the different communities in the Bay area. Shadows of the towers along the Bay Bridge can be seen over the adjacent bay water. With enlargement the entire road network can be easily mapped; individual buildings are visible, including the shadows of the high-rises in downtown San Francisco.Inset: This enlargement of the San Francisco Airport highlights the high spatial resolution of ASTER. With further enlargement and careful examination, airplanes can be seen at the terminals.Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is one of five Earth-observing instruments launched December 18, 1999, on NASA's Terra satellite. The instrument was built by Japan's Ministry of International Trade and Industry. A joint U.S./Japan science team is responsible for validation and calibration of the instrument and the data products. Dr. Anne Kahle at NASA's Jet Propulsion Laboratory, Pasadena, California, is the U.S. Science team leader; Moshe Pniel of JPL is the project manager. ASTER is the only high resolution imaging sensor on Terra. The primary goal of the ASTER mission is to obtain high-resolution image data in 14 channels over the entire land surface, as well as black and white stereo images. With revisit time of between 4 and 16 days, ASTER will provide the capability for repeat coverage of changing areas on Earth's surface.The broad spectral coverage and high spectral resolution of ASTER will provide scientists in numerous disciplines with critical information for surface mapping, and monitoring dynamic conditions and temporal change. Example applications are: monitoring glacial advances and retreats; monitoring potentially active volcanoes; identifying crop stress; determining cloud morphology and physical properties; wetlands evaluation; thermal pollution monitoring; coral reef degradation; surface temperature mapping of soils and geology; and measuring surface heat balance.

2000-01-01

172

CAREER TRAINING IN HOTEL AND RESTAURANT OPERATION...AT CITY COLLEGE OF SAN FRANCISCO.  

Science.gov (United States)

THE HOTEL AND RESTAURANT PROGRAM, ONE OF 35 SEMIPROFESSIONAL TRAINING PROGRAMS AT CITY COLLEGE OF SAN FRANCISCO, COMBINES GENERAL EDUCATION, RELATED BUSINESS INSTRUCTION, HOTEL AND RESTAURANT CLASSES, FOOD PREPARATION AND SERVICE TRAINING, AND WORK EXPERIENCE. THIS DESCRIPTION OF THE PROGRAM INCLUDES (1) PURPOSES AND OBJECTIVES, (2) CURRICULUM,…

BATMALE, LOUIS F.; MULLANY, GEORGE G.

173

The Need for Oceanic Courses by University Extension in the San Diego Area.  

Science.gov (United States)

The report presents a summary of the results of a survey carried out by the Univ. of California Extension Office at UC, San Diego to determine the need for courses in ocean engineering and related fields to enable them to plan course sequences that would ...

T. P. Barnett D. Icenogle

1971-01-01

174

A Community College in the North San Fernando Valley. A Feasibility Study.  

Science.gov (United States)

A feasibility study conducted to examine the proposition of a new community college in the North San Fernando Valley is reported. Following a summary, recommendations, and introduction, findings are discussed as related to the following: Demography, Questionnaire Results, Advisory Committees, Community Participation, Current Enrollment,…

Los Angeles Community Coll. District, CA.

175

The 1793 eruption of San Martín Tuxtla volcano, Veracruz, Mexico  

Science.gov (United States)

San Martín Tuxtla (N18.562°; W95.199°, 1659 masl) is a basaltic volcano located in southern Veracruz, a Mexican State bordering the Gulf of Mexico. It rises in a volcanic field strewn with monogenetic volcanic cones, maars and three other large volcanoes mostly dormant since the late Pliocene: Santa Marta, San Martín Pajapan and Cerro El Vigía. The latest eruptive event of San Martín occurred in 1793 and was described by Don José Mariano Moziño, a naturalist under the commission of the Viceroy of the then New Spain. In this work we present results of the study of this eruption based on historical accounts and field observations. We identified an ash deposit around the volcano related to the 1793 eruption, mapped its distribution and determined its granulometric, petrographic and geochemical characteristics. These studies suggest that the volcano began its activity with explosive phreatomagmatic explosions, which were followed by Strombolian activity; this period lasting from March to October 1793. The activity continued with an effusive phase that lasted probably 2 years. The eruption covered an area of about 480 km 2 with at least 1 cm of ash; the fines reaching distances greater than 300 km from the crater. A total mass of about 2.5 × 10 14 g was ejected and the volcanic columns probably reached altitudes of the order of 10 km during the most explosive phases. The lava emitted formed a coulee that descended the northern flank of the volcano and has an approximate volume of 2.0 × 10 7 m 3.

Espíndola, J. M.; Zamora-Camacho, A.; Godinez, M. L.; Schaaf, P.; Rodríguez, S. R.

2010-11-01

176

DARI KYUUSHUU KE RAN’IN: KARAYUKI-SAN DAN PROSTITUSI JEPANG DI INDONESIA (1885-1920  

Directory of Open Access Journals (Sweden)

Full Text Available Karayuki-san is a term referring to Japanese women who worked as prostitutes abroad from the Meiji Period (1868-1912 to the World War II. This study investigates the various conditions that encourage Japanese women to be karayuki-san, to understand the kinds of exploitations that the karayuki-san experienced during their journey to Indonesia and worked as prostitutes in some cities in Indonesia. The main data sources for this research are some diplomatic records (confidential and disclosed obtained from the Japanese Consulate in Singapore and Batavia from Meiji 28 (1895 to Taisho 4 (1915, Dutch Colonial Governments Regulations related to Japanese migrants, particularly those collected in the Missive Gouvernements Secretaris (Mgs, and dialog records between Yamazaki Tomoko and the ex-karayuki-san that were recorded in Sandakan Hachiban Shookan (Sandakan No.8 Brothel.

Sri Pangastoeti

2009-06-01

177

Development of San Leandro synform and neotectonics of the San Francisco Bay block, California  

Science.gov (United States)

High-resolution, 24-channel seismic-reflection data show a stratified synform beneath south San Francisco Bay. These seismic-reflection data reveal an eastward-dipping bedrock surface that is about 40 m deep (subbottom) beneath the western south bay, and that reaches a maximum observed depth of 500-800 m (subbottom) below the eastern half of the south bay. An angular unconformity cuts both the synform and underlying bedrock. The age of the unconformity is unknown but may be Pleistocene, when these strata forming the synform were presumably exposed subaerially during lowered sea levels. The synformal strata, the unconformity, and some generally flat-lying and overlying strata are folded near the eastern shore of the bay. This folding may result from movement on the Hayward fault (fault interactions and localized strain partitioning) or from compressional deformation in the East Bay Hills related to NE-SW ('fault-normal') convergence between the Pacific and North American plates. In general, reflections from sediment overlying the unconformity are flat lying (except near the eastern shore of the bay), whereas reflections beneath the unconformity dip eastward. The overlying, flat sediment section fills a shallow basin that is coincident with an elliptical residual gravity low. This low appears to be related to the deeper sedimentary, synformal section based on the spatial correlation between the east-dipping reflections and the gravity anomaly. Projecting the east-dipping reflections to the center of the gravity low suggests that the total section of flat-lying and dipping reflections in the synform may exceed 1000 m. Modeling of the gravity low suggests a total low-density section, about 1.5 km thick, at the center of the synform relative to the surrounding bedrock of presumed Franciscan Complex.High-resolution, 24-channel seismic-reflection data show a stratified synform beneath south San Francisco Bay. These seismic-reflection data reveal an eastward-dipping bedrock surface that is about 40 m deep (subbottom) beneath the western south bay, and that reaches a maximum observed depth of 500-800 m (subbottom) below the eastern half of the south bay. An angular unconformity cuts both the synform and underlying bedrock. The age of the unconformity is unknown but may be Pleistocene, when these strata forming the synform were presumably exposed subaerially during lowered sea levels. The synformal strata, the unconformity, and some generally flat-lying and overlying strata are folded near the eastern shore of the bay. This folding may result from movement on the Hayward fault (fault interactions and localized strain partitioning) or from compressional deformation in the East Bay Hills related to NE-SW (`fault-normal') convergence between the Pacific and North American plates. In general, reflections from sediment overlying the unconformity are flat lying (except near the eastern shore of the bay), whereas reflections beneath the unconformity dip eastward. The overlying, flat sediment section fills a shallow basin that is coincident with an elliptical residual gravity low. This low appears to be related to the deeper sedimentary, synformal section based on the spatial correlation between the east-dipping reflections and the gravity anomaly. Projecting the east-dipping reflections to the center of the gravity low suggests that the total section of flat-lying and dipping reflections in the synform may exceed 1000 m. Modeling of the gravity low suggests a total low-density section, about 1.5 km thick, at the center of the synform relative to the surrounding bedrock of presumed Franciscan Complex.

Marlow, M. S.; Jachens, R. C.; Hart, P. E.; Carlson, P. R.; Anima, R. J.; Childs, J. R.

1999-01-01

178

Sediment geochemistry of Corte Madera Marsh, San Francisco Bay, California: have local inputs changed, 1830-2010?  

Science.gov (United States)

Large perturbations since the mid-1800s to the supply and source of sediment entering San Francisco Bay have disturbed natural processes for more than 150 years. Only recently have sediment inputs through the Sacramento-San Joaquin Delta (the Delta) decreased to what might be considered pre-disturbance levels. Declining sediment inputs to San Francisco Bay raise concern about continued tidal marsh accretion, particularly if sea level rise accelerates in the future. The aim of this study is to explore whether the relative amount of local-watershed sediment accumulating in a tidal marsh has changed as sediment supply from the Sacramento-San Joaquin Rivers has decreased. To address this question, sediment geochemical indicators, or signatures, in the fine fraction (silt and clay) of Sacramento River, San Joaquin River, San Francisco Bay, and Corte Madera Creek sediment were identified and applied in sediment recovered from Corte Madera Marsh, one of the few remaining natural marshes in San Francisco Bay. Total major, minor, trace, and rare earth element (REE) contents of fine sediment were determined by inductively coupled plasma mass and atomic emission spectroscopy. Fine sediment from potential source areas had the following geochemical signatures: Sacramento River sediment downstream of the confluence of the American River was characterized by enrichments in chromium, zirconium, and heavy REE; San Joaquin River sediment at Vernalis and Lathrop was characterized by enrichments in thorium and total REE content; Corte Madera Creek sediment had elevated nickel contents; and the composition of San Francisco Bay mud proximal to Corte Madera Marsh was intermediate between these sources. Most sediment geochemical signatures were relatively invariant for more than 150 years, suggesting that the composition of fine sediment in Corte Madera Marsh is not very sensitive to changes in the magnitude, timing, or source of sediment entering San Francisco Bay through the Delta. Nor does there appear to be a ubiquitous increase in the proportion of fine sediment from Corte Madera watershed accumulating in the marsh during the last 20 years when sediment inflows through the Delta have decreased to pre-disturbance levels. We conclude that a large, well-mixed reservoir, such as the transportable fine sediment pool in San Francisco Bay, is the primary source of sediment to Corte Madera Marsh, and this source buffers the marsh against changes in sediment supply from the Delta and local watersheds. This study also found that Corte Madera Marsh sediment between about 10-30 centimeters depth is highly contaminated with lead, likely a legacy of lead smelter operations near Carquinez Strait and leaded gasoline use.

Takesue, Renee K.; Jaffe, Bruce E.

2013-01-01

179

Evidence that Toki-shakuyaku-san and its ingredients enhance the secretion of a cytokine-induced neutrophil chemoattractant (CINC/gro) in the ovulatory process.  

Science.gov (United States)

We investigated the effects of Toki-shakuyaku-san and its crude ingredients in relation to the secretion of a cytokine-induced neutrophil chemoattractant, CINC/gro, interleukin-1 beta (IL-1 beta) and tumor necrosis factor-alpha (TNF alpha) in the ovulatory process. Toki-shakuyaku-san significantly (p Rhizoma, Cnidii Rhizoma, Angelicae Radix, Paeoniae Radix and Alismatis Rhizoma, which are crude ingredients of Toki-shakuyaku-san, significantly (p < 0.01) enhanced the secretion of CINC/gro at concentrations of 100 micrograms/ml. The results of this study show that Toki-shakuyaku-san can stimulate the secretion of 17 beta-estradiol and stimulate the ovulatory process by stimulating the production of CINC/gro, IL-1 beta and TNF alpha in vitro. As a treatment for ovulatory disorders, Toki-shakuyaku-san may have stimulatory effects on both steroidogenesis and the ovulatory process. PMID:11346892

Irahara, M; Yasui, T; Tezuka, M; Ushigoe, K; Yamano, S; Kamada, M; Aono, T

2000-12-01

180

El impacto psicosocial de la violencia en San Salvador The psychosocial impact of violence in San Salvador  

Directory of Open Access Journals (Sweden)

Full Text Available En este estudio se busca lograr dos objetivos: primero, describir los niveles de victimización de la población salvadoreña a causa de la violencia delictiva y el tipo de población más afectada por ella; segundo, averiguar si estos niveles de victimización están relacionados con la presencia de normas, actitudes y comportamientos que favorecen la aparición de la violencia. Para ello se utilizaron los datos del proyecto ACTIVA de El Salvador, que fue realizado por el Instituto Universitario de Opinión Pública entre los meses de octubre y noviembre de 1996 con una muestra de 1 290 entrevistas personales, presuntamente representativa de las personas entre los 18 y 70 años de edad que residen en el Área Metropolitana de San Salvador. La muestra se obtuvo mediante un muestreo probabilístico y multietápico. Los resultados revelan que el nivel de victimización por la violencia es bastante alto en San Salvador y que afecta sobre todo a los hombres y a los jóvenes, y sugieren que las personas que han sido víctimas de agresiones graves suelen mostrar con más frecuencia que el resto normas de justificación y aprobación del uso de la violencia, inclinación por el uso de armas, y conductas de agresión hacia otras personas.This study had two objectives: (1 to describe the levels of victimization of Salvadorians due to criminal violence, and the population groups most affected by it; (2 to learn if these levels of victimization are related to the presence of norms, attitudes, and behaviors that encourage the occurrence of violence. For this purpose data from the ACTIVA project of El Salvador were used. The project was carried out by the University Institute of Public Opinion during October and November 1996, with a sample of 1 290 personal interviews that were presumed to be representative of people between 18 and 70 years of age living in the Metropolitan Area of San Salvador. The sample was obtained through multistage probability sampling. The results show that the level of victimization from violence is quite high in San Salvador and that it especially affects adult and young men. The results also indicate that persons who have been victims of serious aggression tend to show, more frequently than average, norms justifying and approving the use of violence, a tendency to use weapons, and aggressive behaviors toward other people.

José Miguel Cruz

1999-04-01

 
 
 
 
181

The magister of Meldola commandry and the church of San Giovanni Battista Il Maestro della Commenda di Meldola e la magione ospitaliera di San Giovanni Battista  

Directory of Open Access Journals (Sweden)

Full Text Available The article Il Maestro della Commenda di Meldola e la magione ospitaliera di San Giovanni Battista treats the decorations of the small church of San Giovanni Battista in Meldola, where there was a domus of Knights Hospitaller of St. John of Jerusalem.
The first part of it investigates the history of the monastic-military property in Meldola. In fact, just before the Hospitaller, the church of San Giovanni had been part of the commandry of Santa Maria Biacque, estate of the Knights Templar. After the trial of the Templars (1312 the building complex passed to the Knights Hospitaller, who had another commandry called San Giovanni of Palareto, near Meldola. In the mid-15th Century the knights probably decided to redecorate the church of San Giovanni Battista with wall painting which represent Mary, Child Jesus and John the Baptist.
The second part of the article deals with the artistic culture, the conservation and the style of this fresco. In particular, it shows the relation between Meldola's frescos and a group of other wall paintings existent in the province of Forlì. This group of paintings is considered part of the works of an unknown painter of the 15th century. This painter was highly influenced by late gothic culture of Romagna art. Moreover, it seems like he knew some innovation of the regional Renaissance. For this reason we have collected his paintings in a new catalogue and we have conventionally named the painter Maestro della Commenda di Forlì.
L’intervento propone, attraverso l’indagine di alcuni dipinti di area forlivese, una prima ricostruzione della personalità di un interessante interprete locale del XV secolo, provvisoriamente denominato Maestro della Commenda di Meldola. Lo studio, parte integrante della mia tesi di dottorato, prende le mosse dall’analisi dell’affresco dell’Oratorio di San Giovanni Battista a Meldola, per poi allargarsi ad altre emergenze del territorio circostante, fino ai lacerti pittorici emersi nella chiesa della Santissima Trinità di Forlì. Nella prima parte dell’articolo viene ricostruita la storia dell’Oratorio di San Giovanni Battista presso Villa Fronticelli a Meldola: già magione templare di Santa Maria Biacque, nel 1312, in seguito al processo ai templari, passò alle dipendenze della precettoria dei cavalieri gerosolimitani di San Giovanni di Palareto. La realizzazione dell’affresco deve essere probabilmente inserita all’interno dei lavori di ristrutturazione intrapresi dai giovanniti dopo la metà del XV secolo.   Nella seconda parte dell’articolo invece si procede alle indagini tecniche e stilistiche relative alla pittura murale che rappresenta la Madonna col Bambino e San Giovanni Battista. L’affresco mutilo è opera di un interessante maestro che agisce nella sfera del tardogotico locale, mostrando però tenui accenti rinascimentali caratteristici alla pittura forlivese tra sesto e settimo decennio del Quattrocento. Muovendo dalle ricerche di Anna Tambini e Giordani Viroli, attraverso l’analisi di diverse testimonianze del territorio, viene così proposta la ricostruzione di un corpus pittorico caratterizzato da stringenti affinità stilistiche, che, confermando l’appartenenza del suo anonimo pittore ad un milieu stilistico caro ad altri interpreti forlivesi del periodo, come il Maestro di Castrocaro o il Maestro di San Pier Damiani, aiuta ulteriormente a chiarire il panorama artistico romagnolo all’avvento della 'brigada melozziana'.

Paolo Cova

2012-02-01

182

University of California, San Francisco: Drug Industry Document Archive  

Science.gov (United States)

This archive is one that will be of particular importance to those with an interest in public health, public policy, and the general activities of pharmaceutical companies. The Drug Industry Document Archive (DIDA) was created by the University of California, San Francisco (UCSF) and it contains over 1500 documents related to pharmaceutical industry clinical trials, publication of study results, pricing, marketing, and relations with physicians. Many of these documents were previously secret, and were only made public as a result of lawsuits filed against a number of prominent pharmaceutical companies. First-time visitors may wish to start by clicking on "The Documents" link on the homepage. Here they can read about some of the crucial lawsuits that generated the documents featured in this archive.

183

Middle Tertiary contractile deformation, uplift, extension, and rotation in the San Emigdio Range, southern California  

Energy Technology Data Exchange (ETDEWEB)

New data from the San Emigdio Range of southern California provide evidence of major tectonism during the middle Tertiary, including uplift of the adjacent Mojave region, disruption of marine basins, and rotation of the southern tail of the Sierra Nevada. The San Emigdio Range was the site of the southernmost marine deposition in the San Joaquin basin from the earliest through the middle Eocene, overlapping deeply eroded midcrustal granitic rocks. These marine rocks were associated with a northtrending, west-facing shoreline. To the north, the coast probably was embayed to the east as far as the Goler basin of southeastern California. This marine embayment was disrupted and the record of stratigraphic continuity between San Joaquin and Goler basins was destroyed as the result of uplift in the latest Eocene and Oligocene. Conglomerates of the uppermost Eocene and Oligocene nonmarine Tecuya Formation of the San Emigdios comprise an unroofing sequence whose provenance suggests marked uplift and erosion of the Mojave region. Geohistory analysis of the coeval marine Pleito Fm. suggests that the uplift and unroofing was related to contractile deformation. By about 22 Ma, extension replaced contractile deformation in the San Emigdios, as indicated by normal faulting and basaltic volcanism and synchronous extension reported for the adjacent Mojave region. The authors paleomagnetic data from five sites from Tecuya Creek to Pleito Creek reveal that basalts are rotated 44{degree} (clockwise). This rotation occurred prior to 16 Ma and, perhaps between 18-20 Ma, if comparison with the Mojave region is valid. This episode of rotation accounts for most or all of the southwesterly trend of the southern tail of Sierra Nevada basement rocks.

Graham, S.A.; Carroll, A.R. (Stanford Univ., CA (USA)); Decelles, P.G. (Univ. of Rochester, NY (USA)); Goodman, E.D. (Univ. of California, Santa Barbara (USA))

1990-05-01

184

SAFOD Penetrates the San Andreas Fault  

Directory of Open Access Journals (Sweden)

Full Text Available SAFOD, the San Andreas Fault Observatory at Depth (Fig. 1, completed an important milestone in July 2005 by drilling through the San Andreas Fault at seismogenic depth. SAFOD is one of three major components of EarthScope, a U.S. National Science Foundation (NSF initiative being conducted in collaboration with the U.S. Geological Survey (USGS. The International Continental Scientific DrillingProgram (ICDP provides engineering and technical support for the project as well as online access to project data and information (http://www.icdp-online.de/sites/sanandreas/news/news1.html. In 2002, the ICDP, the NSF, and the USGS provided funding for a pilot hole project at the SAFOD site. Twenty scientifi c papers summarizing the results of the pilot hole project as well as pre-SAFOD site characterization studies were published in Geophysical Research Letters (Vol.31, Nos. 12 and 15, 2004.

Mark D. Zoback

2006-03-01

185

SANS-1 Experimental reports of 2000  

International Nuclear Information System (INIS)

The instrument SANS-1 at the Geesthacht neutron facility GeNF was used for scattering experiments in 2000 at 196 of 200 days of reactor and cold source operation. The utilisation was shared between the in-house R and D program and user groups from different universities and research centers. These measurements were performed and analysed either by guest scientists or GKSS staff. The focus of the work in 2000 at the experiment SANS-1 was the structural investigation of hydrogen containing substances such as biological macromolecules (ribosomes, protein-RNA-complexes, protein solutions, glycolipids and membranes), molecules which are important in the fields of environmental research (refractoric organic substances) and technical chemistry (surfactants, micelles). (orig.)

2001-01-01

186

San Rafael mining and fabrication complex today  

International Nuclear Information System (INIS)

In Mendoza province, 35 km West San Rafael city, is located a CNEA installation for uranium ore extraction and concentration: the San Rafael Mining and Fabrication Complex. By the middle of the nineties, as a consequence of the very low prices of uranium concentrate in the international market and of the high internal production costs, uranium extraction was stopped. To day, the international price of the concentrate had a very important increase and the Government has decided the completion of the Atucha II Nuclear Power Station construction. Moreover, studies have been started for new nuclear power plants. In such circumstances the reactivation of the Complex will make sure the uranium supply for our nuclear power stations, contributing to the improvement of the energy generation mix in our country. (author)

2005-01-01

187

Synthetic seismicity for the San Andreas fault  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Because historical catalogs generally span only a few repetition intervals of major earthquakes, they do not provide much constraint on how regularly earthquakes recur. In order to obtain better recurrence statistics and long-term probability estimates for events M ? 6 on the San Andreas fault, we apply a seismicity model to this fault. The model is based on the concept of fault segmentation and the physics of static dislocations which allow for stress transfer between segments. Constraints a...

1994-01-01

188

SANS studies of liquid crystalline microemulsion gels  

Digital Repository Infrastructure Vision for European Research (DRIVER)

We have investigated by small-angle neutron scattering (SANS) the ternary system containing water, alkane and the surfactant mixture benzyltetradecyldimethylammonium chloride and tetradecyltrimethylammonium bromide, which we have found to form a cubic liquid crystalline phase. A contrast variation experiment with equal volume fractions of water and oil showed three Bragg reflections varying in agreement with theoretically calculated scattering amplitudes for an infinite periodic minimal surfa...

1989-01-01

189

San Bernardino National Wildlife Refuge Well 10  

Energy Technology Data Exchange (ETDEWEB)

The U.S. Geological Survey (USGS), at the request of the U.S. Fish and Wildlife Service, evaluated the water production capacity of an artesian well in the San Bernardino National Wildlife Refuge, Arizona. Water from the well initially flows into a pond containing three federally threatened or endangered fish species, and water from this pond feeds an adjacent pond/wetland containing an endangered plant species.

Ensminger, J.T.; Easterly, C.E.; Ketelle, R.H.; Quarles, H.; Wade, M.C.

1999-12-01

190

Moving Towards SAN Storage: An Enterprise Perspective  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Abstract – One of the major components of any enterprise IT infrastructure is data storage. There has been continuous effort to explore new storage technologies to improve performance with respect to input/output operations, data availability, consolidation of storage assets and data protection and archiving. Storage has moved from the traditional Direct Attached Storage (DAS) to Network Attached Storage (NAS) and now to Storage Area Networks (SAN). Traditional storage subsystems like Serve...

2012-01-01

191

Diatomeas potencialmente nocivas del Golfo San Matías (Argentina) / Potentially harmful diatoms from the San Matías Gulf (Argentina)  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish Abstract in spanish RESUMEN Este trabajo tuvo como objetivo estudiar las diatomeas presentes en las aguas costeras del área norte del Golfo San Matías (Provincia de Río Negro, Argentina) que han sido citadas como productoras de eventos nocivos en otras áreas geográficas. El material fue recolectado en dos estaciones de [...] muestreo: Las Grutas y Piedras Coloradas, relacionadas con bancos naturales y cultivo de bivalvos respectivamente. Dos taxa potencialmente toxígenos y 18 taxa nocivos no toxígenos fueron hallados. A pesar de que algunos de ellos fueron ocasionalmente abundantes en el plancton del área, ninguno produjo discoloraciones evidentes ni se detectó que hubieran causado efectos nocivos durante el período de estudio. Abstract in english ABSTRACT Diatoms responsible for harmful events in other geographic areas, found in the coastal waters of the San Matías Gulf (Río Negro Province, Argentina), were studied. Materials were collected in two sampling stations related to natural banks and cultures of bivalves: Las Grutas and Piedras Col [...] oradas. Two potentially toxigenic taxa and 18 harmful non toxigenic taxa were found. Despite that some of these taxa were occasionally abundant in the plankton of the area, none of them caused evident discolorations or detectable harmful effects during the study period.

Inés, Sunesen; Alejandra, Bárcena; Eugenia A, Sar.

192

Does the West Salton Detachment extend through San Gorgonio Pass, southern California?  

Science.gov (United States)

Rift-related extension and low-angle crustal detachment are key structural elements of the late Cenozoic southern San Andreas Fault system, as manifested by the West Salton Detachment (WSD). The most northwestern exposure of the WSD is in the Santa Rosa Mts (SRM), where the Zosel Fault bottoms a hangingwall sequence of upper Cenozoic marine and terrestrial sedimentary deposits that include stratigraphic units well known throughout the Salton Trough region. We have used geologic and geophysical data to investigate the distribution of the WSD system in the northern Salton Trough, including its possible extension into and beyond San Gorgonio Pass. Although the WSD is not exposed north of the SRM, late Miocene marine and terrigenous sedimentary rocks at Garnet Hill probably are hangingwall deposits squeezed up within the San Andreas Fault zone. West of Garnet Hill lie San Gorgonio Pass (SGP) and the 3 km-high northern escarpment of the San Jacinto Mountains (SJM). In SGP, upper Cenozoic sedimentary rocks south of the Banning strand of the San Gabriel Fault include the marine Imperial Formation and associated terrestrial deposits, a sequence similar to that in the WSD hangingwall throughout the greater Salton Trough region. We propose that the WSD originally extended from the NW head of Coachella Valley west into SGP, where the detachment may form the base of the Cenozoic marine and terrestrial sedimentary sequence. The WSD probably continues west beyond SGP, with extensional translation decreasing until the detachment intersects the Banning Fault near Calimesa. There, we propose that the WSD underlies a subsurface sedimentary package north of the San Timoteo badlands and south of the Banning Fault that a gravity low suggests is 2 km thick, and that reportedly contains marine sediment penetrated in boreholes. When ~44 km of right-slip is restored on the Banning Fault (Matti and Morton, 1993), the Calimesa low restores opposite a similar low in the northwestern Coachella Valley. The juxtaposed gravity lows mark a late Cenozoic depocenter that formed at the NW head of the Salton Trough during evolution of the San Gabriel and San Andreas Faults (10 Ma to 1.2 Ma). This reconstruction has several implications: (1) the WSD was active while the late Cenozoic sedimentary sequence in SGP accumulated in its hangingwall at 7 Ma (marine Imperial Fm) and probably as early as 10 Ma (Hathaway Fm); (2) At that time the San Jacinto Mts (SJM) began to rise in the WSD footwall, shedding sediment and landslide breccia into the SGP basin. Simultaneously, Transverse Ranges sources shed sediment southwest, south, and southeast into the SGP basin and the adjoining San Timoteo basin; (3) Prior to disruption by right-slip on the Banning Fault, the WSD probably extended around the NW head of the Salton Trough, where the detachment would have separated footwall crystalline rocks of SGP from hangingwall deposits of the Salton Trough (Coachella Fanglomerate, Imperial and Painted Hill fms). The enigmatic Whitewater Fault in the SE San Bernardino Mts may be part of the WSD. (4) Because extensional translation on the WSD diminished westward through SGP, it is doubtful that >3 km of topographic relief on the WSD footwall in the SJM resulted from footwall uplift alone during the period 10 Ma to 1.2 Ma. Post-WSD Quaternary uplift must account for an unknown component of this relief.

Matti, J. C.; Langenheim, V. E.

2008-12-01

193

Evaluation of Acoustic Doppler Velocity Meters to Quantify Flow From Comal Springs and San Marcos Springs, Texas  

Science.gov (United States)

Comal Springs and San Marcos Springs are the two largest springs in Texas, are major discharge points for the San Antonio segment of the Edwards aquifer, and provide habitat for several Federally listed endangered species that depend on adequate springflows for survival. It is therefore imperative that the Edwards Aquifer Authority have accurate and timely springflow data to guide resource management. Discharge points for Comal Springs and San Marcos Springs are submerged in Landa Lake and in Spring Lake, respectively. Flows from the springs currently (2008) are estimated by the U.S Geological Survey in real time as surface-water discharge from conventional stage-discharge ratings at sites downstream from each spring. Recent technological advances and availability of acoustic Doppler velocity meters (ADVMs) now provide tools to collect data (stream velocity) related to springflow that could increase accuracy of real-time estimates of the springflows. The U.S. Geological Survey, in cooperation with the Edwards Aquifer Authority, did a study during May 2006 through September 2007 to evaluate ADVMs to quantify flow from Comal and San Marcos Springs. The evaluation was based on two monitoring approaches: (1) placement of ADVMs in important spring orifices - spring run 3 and spring 7 at Comal Springs, and diversion spring at San Marcos Springs; and (2) placement of ADVMs at the nearest flowing streams - Comal River new and old channels for Comal Springs, Spring Lake west and east outflow channels and current (2008) San Marcos River streamflow-gaging site for San Marcos Springs. For Comal Springs, ADVM application at spring run 3 and spring 7 was intended to indicate whether the flows of spring run 3 and spring 7 can be related to total springflow. The findings indicate that velocity data from both discharge features, while reflecting changes in flow, do not reliably show a direct relation to measured streamflow and thus to total Comal Springs flow. ADVMs at the Comal River new channel and old channel sites provide data that potentially could yield more accurate real-time estimates of total Comal Springs flow than streamflow measured at the downstream Comal River site. For San Marcos Springs, the findings indicate shortcomings with ADVM installations at diversion spring and in the west and east outflow channels. However, the accuracy of streamflow measured at the San Marcos River gage as an estimate of real-time San Marcos Springs flow could potentially be increased through use of ADVM data from that site.

Gary, Marcus O.; Gary, Robin H.; Asquith, William H.

2008-01-01

194

Complexation studies of actinides (U, Pu, Am) with linear polyamino-carboxylate ligands and sidero-chelates; Etudes de la chelation d'actinides (U, Pu, Am) par des ligands polyaminocarboxylate lineaires et des siderochelates d'interet environnemental  

Energy Technology Data Exchange (ETDEWEB)

As part of our research endeavour aimed at developing and improving decontamination processes of wastewater containing alpha emitters, physico-chemical complexation studies of actinides (U, Pu, Am) with organic open-chain ligands such as poly-aminocarboxylic acids (H{sub 4}EDTA) and sidero-chelates (di-hydroxamic acids and desferrioxamine B) have been carried out. Gaining a clear understanding of the coordination properties of the targeted actinides is an essential step towards the selection of the most appropriate chelating agents that will exhibit high uptake efficiencies. EXAFS (Extended X-ray Absorption Fine Structure) measurements at the ESRF synchrotron enabled to elucidate the coordination scheme of uranium and plutonium complexes. Solution thermodynamic investigations were intended to provide valuable information about the nature and the stability of the uranium(VI) and americium(III) complexes prevailing at a given pH in solution. The set of stability constants determined from potentiometric and UV-visible spectrophotometric titrations, allowed to predict the speciation of the selected actinides in presence of the aforementioned ligands and to determine the pH range required for achieving 'ultimate' decontamination. (author) [French] Dans le cadre du developpement et de l'amelioration des procedes de decontamination d'effluents aqueux contamines par des radioelements emetteurs alpha, des etudes physico-chimiques sur la complexation des actinides (U, Pu, Am) avec des ligands organiques tels que des acides polyaminocarboxyliques lineaires (H{sub 4}EDTA) et des siderochelates (acides dihydroxamiques et desferrioxamine B) ont ete effectuees. La comprehension des proprietes de coordination est une etape essentielle pour selectionner les meilleurs agents chelatants qui se montreront efficaces dans le traitement des effluents. Les schemas de coordination des complexes d'uranium et de plutonium avec ces ligands ont ete determines a l'aide de mesures par spectroscopie EXAFS (Extended X-ray Absorption Fine Structure) effectuees au synchrotron de l'ESRF. Ces travaux ont ete completes par des etudes thermodynamiques realisees en couplant des mesures potentiometriques et spectrophotometriques UV-Visible afin d'identifier la nature des complexes d'uranium(VI) et d'americium(III) formes en solution et d'evaluer leur stabilite. A l'aide des constantes d'equilibre, il est possible de simuler le diagramme de speciation dans les conditions de traitement des effluents du centre de Valduc et de definir ainsi une gamme de pH dans laquelle le ligand est efficace pour atteindre une decontamination 'ultime'

Nguyen, L.V.

2010-11-25

195

Space Radar Image of San Francisco, California  

Science.gov (United States)

This is a radar image of San Francisco, California, taken on October 3,1994. The image is about 40 kilometers by 55 kilometers (25 miles by 34 miles) with north toward the upper right. Downtown San Francisco is visible in the center of the image with the city of Oakland east (to the right) across San Francisco Bay. Also visible in the image is the Golden Gate Bridge (left center) and the Bay Bridge connecting San Francisco and Oakland. North of the Bay Bridge is Treasure Island. Alcatraz Island appears as a small dot northwest of Treasure Island. This image was acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour on orbit 56. The image is centered at 37 degrees north latitude, 122degrees west longitude. This single-frequency SIR-C image was obtained by the L-band (24 cm) radar channel, horizontally transmitted and received. Portions of the Pacific Ocean visible in this image appear very dark as do other smooth surfaces such as airport runways. Suburban areas, with the low-density housing and tree-lined streets that are typical of San Francisco, appear as lighter gray. Areas with high-rise buildings, such as those seen in the downtown areas, appear in very bright white, showing a higher density of housing and streets which run parallel to the radar flight track. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless of weather or sunlight conditions. SIR-C/X-SAR uses three microwave wavelengths: the L-band (24 cm), C-band (6 cm) and X-band (3cm). The multi-frequency data will be used by the international scientific community to better understand the global environment and how it is changing. The SIR-C/X-SAR data, complemented by aircraft and ground studies, will give scientists clearer insights into those environmental changes which are caused by nature and those changes which are induced by human activity. SIR-C was developed by NASA's Jet Propulsion Laboratory. X-SAR was developed by the Dornier and Alenia Spazio companies for the German space agency, Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA), and the Italian space agency, Agenzia Spaziale Italiana (ASI), with the Deutsche Forschungsanstalt fuer Luft und Raumfahrt e.V. (DLR), the major partner in science, operations and data processing of X-SAR.

1994-01-01

196

Development of 40m SANS and Its Utilization Techniques  

International Nuclear Information System (INIS)

Small angle neutron scattering (SANS) has been a very powerful tool to study nanoscale (1-100 nm) bulk structures in various materials such as polymer, self assembled materials, nano-porous materials, nano-magnetic materials, metal and ceramics. Understanding the importance of the SANS instrument, the 8m SANS instrument was installed at the CN beam port of HANARO in 2001. However, without having a cold neutron source, the beam intensity is fairly low and the Q-range is rather limited due to short instrument length. In July 1, 2003, therefore, the HANARO cold neutron research facility project was launched and a state of the art 40m SANS instrument was selected as top-priority instrument. The development of the 40m SANS instrument was completed as a joint project between Korea Advanced Institute of Science and Technology and the HANARO in 2010. Here, we report the specification of a state of art 40m SANS instrument at HANARO

2010-01-01

197

Performance of San Fernando dams during 1994 Northridge earthquake  

Energy Technology Data Exchange (ETDEWEB)

The 1994 Northridge and 1971 San Fernando Earthquakes subjected the Lower and Upper San Fernando Dams of the Van Norman Complex in the San Fernando Valley, Calif., to strong near-source ground motions. In 1994, these earth dams, which were out of service and retained only a few meters of water, extensively cracked and settled due to the liquefaction of their hydraulic fill. The Lower San Fernando Dam moved over 15 cm upstream as the hydraulic fill liquefied beneath its upstream slope. The Upper San Fernando Dam moved even more and deformed in a complicated three-dimensional pattern. The responses of the Lower and Upper San Fernando Dams during the 1994 Northridge Earthquake, although less significant than in 1971, provide the geotechnical engineering community with two useful case histories.

Bardet, J.P. [Univ. of Southern California, Los Angeles, CA (United States). Civil Engineering Dept.; Davis, C.A. [Los Angeles Dept. of Water and Power, CA (United States)

1996-07-01

198

Comprehensive Housing Market Analysis: San Jose-Sunnyvale-Santa Clara, California As of April 1, 2012.  

Science.gov (United States)

The San Jose-Sunnyvale-Santa Clara Housing Market Area (HMA) (hereafter, the San Jose HMA), in northern California, south of the San Francisco Bay, com- prises San Benito and Santa Clara Counties. The HMA is divided into two submarkets: the San Jose subma...

2012-01-01

199

The Effect of Bangpungtongsung-san Extracts on Adipocyte Metabolism  

Directory of Open Access Journals (Sweden)

Full Text Available Objective : The purpose of this study is to investigate the effects of Bangpungtongsung-san extracts on the preadipocytes proliferation, of 3T3-L1 cell line. lipolysis of adipocytes in rat's epididymis and localized fat accumulation of porcine by extraction methods(alcohol and water. Methods : Diminish 3T3-L1 proliferation and lipogenesis do primary role to reduce obesity. So, 3T3-L1 preadipocyte and adipocytes were performed on cell cultures, and using Sprague-Dawley rats for the lipogenesis, and treated with 0.01-1 ?/? Bangpungtongsung-san Extracts depend on concentrations. Porcine skin including fat tissue after treated Bangpungtongsung-san Extracts by means of the dosage dependent variation are investigated the histologic changes after injection of these extracts. Results : Following results were obtained from the 3T3-L1 preadipocyte proliferation and lipolysis of adipocyte in rats and histologic investigation of fat tissue. 1. Bangpungtongsung-san extracts were showed the effect of decreased preadipocyte proliferation on the high dosage(1.0?/?. 2. Bangpungtongsung-san extracts were showed the effect of decreased the activity of glycerol-3-phosphate dehydrogenase(GPDH on the high dosage(1.0?/? and Specially, alcohol extract of Bangpungtongsung -san was clear as time goes by high concentration. 3. Bangpungtongsung-san extracts were showed tries to compare the effect of lipolysis, alcohol extract of Bangpungtongsung-san on the high dosage(1.0?/? was observed the effect is higher than water extract. 4. Investigated the histological changes in porcine fat tissue after treated Bangpungtongsung-san extracts, we knew that water extract of Bangpungtongsung-san was showed the effect of lipolysis on the high dosage(10.0?/? and alcohol extract of Bangpungtongsung-san was showed significant activity to the lysis of cell membranes in all concentration. Conclusion : These results suggest that Bangpungtongsung-san extracts efficiently induces diminish proliferation of preadipocyte and lipolysis in adipose tissue.

Sang Min, Lee

2008-03-01

200

Perception pour véhicule urbain sans conducteur : conception et implémentation  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Le développement de véhicules sans conducteur capables de se déplacer sur des routes urbaines pourrait offrir des avantages importants dans la réduction des accidents, le confort et la réduction des coûts des déplacements. Dans ce document, nous discutons la manière de créer un système de perception permettant à un robot de conduire sur des routes sans devoir adapter l'infrastructure, sans avoir besoin de visites précédentes, et en prenant en compte la présence de piétons et d'...

Benenson, Rodrigo

2008-01-01

 
 
 
 
201

Evangelical Churches and Conservation in San Pacho, Darién (Colombian Caribbean  

Directory of Open Access Journals (Sweden)

Full Text Available The locality of San Francisco de Asís (Acandí, Chocó overlooking the Caribbean Sea, is a well-known headquarter for actions related to environmental protection, thanks to the work of organization and individuals that try to alleviate the global environmental crisis. The great expansion of the evangelical movement among populations that formerly were catholic puts these new local churches in a position of social actors that can contribute to the conservation projects of marine life and forests. Although there is no organic link between the conservationist movement and evangelical churches, analyzinga shared experience in the journeys of protecting marine turtles, we see how the topic gains relevance for the religious organizations, according to the ethnography realized between 2008 and 2009. Thus, religious believes cease to be contrasts to the norm, to set themselves up as dependent orientations within the context in which they operate.

Aída Gálvez; Julio Salazar; Lorena Ramírez

2009-07-01

202

The San Andreas Fault at SAFOD: Seismic Imaging and Borehole Comparisons  

Science.gov (United States)

We acquired three high-resolution (2.5-m CDP spacing) seismic reflection and refraction profiles across the SAFOD site in 1998 and 2003. In 1998, we acquired a 5-km-long, high-resolution seismic reflection and refraction profile from ~2 km southwest of the SAFOD drill site to about 1.5 km northeast of the surface trace of the San Andreas fault. In 2003, we acquired two additional high-resolution seismic reflection and refraction profiles that were centered on the SAFOD drill site. All three profiles provide velocity images to maximum depths of 800 m and reflection images to maximum depths of 5 km, which correlate with structures and lithologies observed in the SAFOD borehole. Our seismic images show that the San Andreas fault is located within an approximately 1.7-km-wide, southwest-dipping low-velocity zone at about 1 km depth. On the basis of velocity data, we previously interpreted traces of the San Andreas fault to lie within a wedge of sediments (Catchings et al., 2002; BSSA), a result that was confirmed by SAFOD borehole data. Small repeating earthquakes that were the principal target events for SAFOD drilling reside within the wedge of sediments and are probably related to low-strength sedimentary rocks. However, our reflection images show that additional strands of the San Andreas fault extend into more competent rock, well northeast of the SAFOD target faults. The relatively wide fault zone, inferred from our observations of numerous fault strands on seismic reflection images, suggests that SAFOD sampled only part of the San Andreas fault zone, which is wider and more structurally complex than previous believed.

Catchings, R. D.; Rymer, M. J.; Goldman, M. R.

2005-12-01

203

Highly magnetic Upper Miocene sandstones of the San Francisco Bay area, California  

Science.gov (United States)

A high-resolution aeromagnetic survey of the San Francisco Bay area shows prominent positive anomalies over distinctive blue sandstones of Late Miocene age. The total-field survey was measured at a nominal height of 300 m above the land surface along flight lines spaced 0.5 km apart. Anomalies with amplitudes up to 200 nT correlate with sandstones of the San Pablo Group, and these anomalies are similar in strength to the magnetic signatures of serpentinites and basalts in the surveyed region. Andesitic sandstone of the Neroly Formation, the upper part of the San Pablo Group, has high magnetic susceptibility (0.013 SI units, volume) and relatively strong natural remanent magnetization (0.29 A/m). Total magnetization of the sandstone is two thirds induced and one third remanent magnetization. The presence of coarse-grained magnetite detritus, low coercivity of remanence, low thermal stability of remanence, and multidomain properties is consistent with the NRM being a viscous remanent magnetization that grew during the Brunhes normal-polarity chron. The strong magnetic signature of the Upper Miocene sandstones allows their delineation over distances as great as 100 km, through areas where they are concealed by landslides and younger deposits. The sandstones are important structural markers for understanding the complex folding and faulting associated with active fault systems in the San Francisco Bay area.

Hillhouse, John W.; Jachens, Robert C.

2005-05-01

204

Characterization of the neutron detector upgrade to the GP-SANS and Bio-SANS instruments at HFIR  

International Nuclear Information System (INIS)

Over the past year, new 1 m×1 m neutron detectors have been installed at both the General Purpose SANS (GP-SANS) and the Bio-SANS instruments at HFIR, each intended as an upgrade to provide improved high rate capability. This paper presents the results of characterization studies performed in the detector test laboratory, including position resolution, linearity and background, as well as a preliminary look at high count rate performance.

2012-11-21

205

Malaria control in the municipality of San Esteban, Honduras Control de la malaria en el municipio de San Esteban, Honduras  

Digital Repository Infrastructure Vision for European Research (DRIVER)

OBJECTIVES: To assess the burden of malaria in San Esteban, Department of Olancho, Honduras, and provide recommendations for control. METHODS: Malaria causes appreciable morbidity in San Esteban. In 2006, health workers reported an increase in malaria cases and requested recommendations for control. In 2005, 385 cases (Plasmodium vivax, 316; P. falciparum, 69) were detected from 4 007 blood smears in the San Esteban laboratory (slide positivity rate = 9.6%). During May-July 2006, we assessed ...

Christine Elizabeth Bell; Laurence Slutsker; Beach, Raymond F.; Foster, Stanley O.; German Jimenez; Maria Elena Sarmiento

2009-01-01

206

Landslide oil field, San Joaquin Valley, California  

Energy Technology Data Exchange (ETDEWEB)

The Landslide field, located at the southern margin of the San Joaquin basin, was discovered in 1985 by a partnership headed by Channel Exploration Company, on a farm out from Tenneco Oil Company. Initial production from the Tenneco San Emidio 63X-30 was 2064 BOPD, making landslide one of the largest onshore discoveries in California during the past decade. Current production is 7100 BOPD from a sandstone reservoir at 12,500 ft. Fifteen wells have been drilled in the field, six of which are water injectors. Production from the Landslide field occurs from a series of upper Miocene Stevens turbidite sandstones that lie obliquely across an east-plunging structural nose. These turbidite sandstones were deposited as channel-fill sequences within a narrowly bounded levied channel complex. Both the Landslide field and the larger Yowlumne field, located 3 mi to the northwest, comprise a single channel-fan depositional system that developed in the restricted deep-water portion of the San Joaquin basin. Information from the open-hole logs, three-dimensional surveys, vertical seismic profiles, repeat formation tester data, cores, and pressure buildup tests allowed continuous drilling from the initial discovery to the final waterflood injector, without a single dry hole. In addition, the successful application of three-dimensional seismic data in the Landslide development program has helped correctly image channel-fan anomalies in the southern Maricopa basin, where data quality and severe velocity problems have hampered previous efforts. New exploration targets are currently being evaluated on the acreage surrounding the Landslide discovery and should lead to an interesting new round of drilling activity in the Maricopa basin.

Collins, B.P.; March, K.A.; Caballero, J.S.; Stolle, J.M.

1988-03-01

207

SANS-II at SINQ: installation of the former Risoe-SANS facility  

International Nuclear Information System (INIS)

SANS-II facility at SINQ (Paul Scherrer Institute)--the reinstalled former Risoe small-angle neutron scattering instrument--is presented. Its operational characteristics are listed. Approaches for precise determination of wavelength, detector dead time and attenuation factors are described as well

2004-07-15

208

SANS-II at SINQ: installation of the former Risoe-SANS facility  

Energy Technology Data Exchange (ETDEWEB)

SANS-II facility at SINQ (Paul Scherrer Institute)--the reinstalled former Risoe small-angle neutron scattering instrument--is presented. Its operational characteristics are listed. Approaches for precise determination of wavelength, detector dead time and attenuation factors are described as well.

Strunz, P.; Mortensen, K.; Janssen, S

2004-07-15

209

SANS-II at SINQ: Installation of the former Risø-SANS facility  

DEFF Research Database (Denmark)

SANS-II facility at SINQ (Paul Scherrer Institute)-the reinstalled former Riso small-angle neutron scattering instrument-is presented. Its operational characteristics are listed. Approaches for precise determination of wavelength, detector dead time and attenuation factors are described as well. (C) 2004 Elsevier B.V. All rights reserved.

Strunz, P.; Mortensen, K.

2004-01-01

210

Geology, Sequence Stratigraphy, and Oil and Gas Assessment of the Lewis Shale Total Petroleum System, San Juan Basin, New Mexico and Colorado. Chapter 5 of 7: Total Petroleum Systems and Geologic Assessment of Undiscovered Oil and Gas Resources in the San Juan Basin Province, Exclusive of Paleozoic Rocks, New Mexico and Colorado.  

Science.gov (United States)

The Lewis Shale Total Petroleum System (TPS) in the San Juan Basin Province contains a continuous gas accumulation in three distinct stratigraphic units deposited in genetically related depositional environments: offshore-marine shales, mudstones, siltsto...

2013-01-01

211

Ancient tropical climates warm San Francisco gathering  

Energy Technology Data Exchange (ETDEWEB)

Climate records preserved in the Greenland ice sheet got a lot of the attention at the fall meeting of the American Geophysical Union (AGU) in San Francisco last month, but ancient tropical records were a rival attraction. In talks scattered in unrelated sessions, researchers reported a possible role for the tropics in driving the last ice age, a link between high latitudes and the tropics that may have redirected human evolution, and a tropical climate periodicity that may fill a gap in the understanding of climate variability.

Kerr, R.A.

1994-01-14

212

SANS investigation on pore morphology in ceria  

International Nuclear Information System (INIS)

We have synthesized ceria (CeO2) powder by homogeneous precipitation method using CeNO3 and hexamethylene tetramine at 80 deg C. The precipitate is calcined and further powdered to an average size of 0. 7 ?m. Afterwards, pellets of 2 to 3 mm thickness are prepared by sintering the powder compacts at 1300 deg C temperature for three sintering time. We carry out small angle neutron scattering (SANS) experiments to investigate the pore structure in these pellets. The results show that with increase in sintering time the peak of the size distribution profile shifts towards the larger size (author)

2003-12-26

213

Characterization of nanoporous superalloy by SANS  

International Nuclear Information System (INIS)

The self-assembly of the ?'-precipitates in superalloy during thermo-mechanical exposure can be used to produce a nanoporous material by a selective phase dissolution. Nanoporous superalloy (CMSX4) samples, containing narrow channel-like pores, were investigated by high-resolution small-angle neutron scattering (SANS) in order to observe a time dependence of the pore depth during etching. The mean distance of pores and their depths were determined. A saturation of the pore depth with etching time was observed

2006-11-15

214

Characterization of nanoporous superalloy by SANS  

Energy Technology Data Exchange (ETDEWEB)

The self-assembly of the {gamma}'-precipitates in superalloy during thermo-mechanical exposure can be used to produce a nanoporous material by a selective phase dissolution. Nanoporous superalloy (CMSX4) samples, containing narrow channel-like pores, were investigated by high-resolution small-angle neutron scattering (SANS) in order to observe a time dependence of the pore depth during etching. The mean distance of pores and their depths were determined. A saturation of the pore depth with etching time was observed.

Strunz, Pavel [Nuclear Physics Institute, CZ-25068 Rez (Czech Republic); Research Centre Rez, CZ-25068 Rez (Czech Republic)]. E-mail: strunz@ujf.cas.cz; Mukherji, Debashis [Institute of Applied Physics, ETH Zuerich, CH-8093 Zurich (Switzerland); IfW, TU Braunschweig, D-38106 Braunschweig, Langer Kamp 8 (Germany); Naeth, Oliver [IfW, TU Braunschweig, D-38106 Braunschweig, Langer Kamp 8 (Germany); Gilles, Ralph [TU Muenchen, ZWE FRM-II, Lichtenbergstr. 1, D-85747 Garching (Germany); Roesler, Joachim [IfW, TU Braunschweig, D-38106 Braunschweig, Langer Kamp 8 (Germany)

2006-11-15

215

Study of silica sorbents by SANS  

International Nuclear Information System (INIS)

Silica gels under study are materials intended for use as the packing sorbents in liquid chromatography (LC), namely in gel permeation chromatography (GPC). The quality of silica for LC should meet strict physical and chemical parameters. Especially in GPC is very important to know pore size and pore shape because they control the whole process of chromatographic separation. Pore size and thickness of pore wall can be measured by various methods. SANS technique is a nondestructive method providing an average information about a large number of scattering object in our case about objects (pore or wall) in silica and their shape. (author)

1999-04-01

216

San Francisco: 50 years on - part two  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Buckley describes how Britain took the independent step of recognizing the People's Republic of China, a step which led to problems about China being invited to the San Francisco conference. After China's entry into the war in Korea, Hong Kong's trade was squeezed through trade embargos imposed by the United States and its exposed security system was vulnerable, had it not been for the presence of the US 7th fleet in the Taiwan Straits. Ferretti shows that the leading ideas of Yoshida Shigeru...

Buckley, Roger; Ferretti, Valdo; Meaney, Neville; Trotter, Ann

2001-01-01

217

33 CFR 3.55-20 - Sector San Francisco: San Francisco Bay Marine Inspection Zone and Captain of the Port Zone.  

Science.gov (United States)

...2010-07-01 2010-07-01 false Sector San Francisco: San Francisco Bay Marine Inspection Zone and Captain of the Port...Coast Guard District § 3.55-20 Sector San Francisco: San Francisco Bay Marine Inspection Zone and...

2010-07-01

218

77 FR 1407 - Drawbridge Operation Regulation; Islais Creek, San Francisco, CA  

Science.gov (United States)

...Operation Regulation; Islais Creek, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION...across Islais Creek, mile 0.4, at San Francisco, CA. The deviation is necessary to allow the City of San Francisco to make emergency electrical...

2012-01-10

219

76 FR 55261 - Safety Zone; Corporate Party on Hornblower Yacht, San Francisco, CA  

Science.gov (United States)

...Zone; Corporate Party on Hornblower Yacht, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION: Temporary...in the navigable waters near pier 48 in the San Francisco Bay, San Francisco, California in support of the Corporate...

2011-09-07

220

75 FR 25111 - Safety Zone; KFOG Kaboom, Fireworks Display, San Francisco, CA  

Science.gov (United States)

...Safety Zone; KFOG Kaboom, Fireworks Display, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION: Temporary...temporary safety zone in the navigable waters in San Francisco Bay in San Francisco, CA, in support of the KFOG Kaboom...

2010-05-07

 
 
 
 
221

78 FR 32990 - Special Local Regulation and Safety Zone; America's Cup Sailing Events, San Francisco, CA  

Science.gov (United States)

...Zone; America's Cup Sailing Events, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION...September 23rd, 2013 on the waters of San Francisco Bay adjacent to the City of San Francisco waterfront in the vicinity of the Golden...

2013-06-03

222

76 FR 65120 - Drawbridge Operation Regulation; Islais Creek, San Francisco, CA  

Science.gov (United States)

...Operation Regulation; Islais Creek, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION...across Islais Creek, mile 0.4, at San Francisco, CA. The deviation is necessary to allow the City of San Francisco to make emergency electrical...

2011-10-20

223

75 FR 65985 - Safety Zone: Epic Roasthouse Private Party Firework Display, San Francisco, CA  

Science.gov (United States)

...Private Party Firework Display, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION...safety zone in the navigable waters of San Francisco Bay 1,000 yards off Epic Roasthouse Restaurant, San Francisco, CA during a fireworks display in...

2010-10-27

224

77 FR 22706 - Special Local Regulation and Safety Zone; America's Cup Sailing Events, San Francisco, CA  

Science.gov (United States)

...Zone; America's Cup Sailing Events, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION...that may be conducted in the waters of San Francisco Bay adjacent to the City of San Francisco waterfront in the vicinity of the Golden...

2012-04-17

225

75 FR 41983 - Establishment of Class D Airspace; San Marcos, TX  

Science.gov (United States)

...10-ASW-8] Establishment of Class D Airspace; San Marcos, TX AGENCY: Federal Aviation Administration...This action establishes Class D airspace for San Marcos Municipal Airport, San Marcos, TX. Establishment of an air traffic...

2010-07-20

226

78 FR 48293 - Amendment of Class D and Class E Airspace; San Marcos, TX  

Science.gov (United States)

...of Class D and Class E Airspace; San Marcos, TX AGENCY: Federal Aviation Administration...amends Class D and Class E airspace at San Marcos, TX. Additional controlled airspace...Instrument Approach Procedures at San Marcos Municipal Airport and the...

2013-08-08

227

76 FR 35024 - Precision Dynamics Corporation San Fernando, CA; Precision Dynamics Corporation, Also Known as...  

Science.gov (United States)

...Precision Dynamics Corporation San Fernando, CA; Precision Dynamics Corporation...Precision Dynamics Corporation, San Fernando, California. The workers are engaged...operated in conjunction with the San Fernando, California location of Precision...

2011-06-15

228

76 FR 45212 - Revisions to the California State Implementation Plan, San Joaquin Valley Unified Air Pollution...  

Science.gov (United States)

...Plan, San Joaquin Valley Unified Air Pollution Control District AGENCY: Environmental...approve San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD...San Joaquin Valley Unified Air Pollution Control District...

2011-07-28

229

76 FR 26609 - Revisions to the California State Implementation Plan, San Joaquin Valley Unified Air Pollution...  

Science.gov (United States)

...Plan, San Joaquin Valley Unified Air Pollution Control District AGENCY: Environmental...the San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD...v. San Joaquin Valley Unified Air Pollution Control District (No....

2011-05-09

230

75 FR 28509 - Revisions to the California State Implementation Plan, San Joaquin Valley Unified Air Pollution...  

Science.gov (United States)

...Plan, San Joaquin Valley Unified Air Pollution Control District AGENCY: Environmental...the San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD...v. San Joaquin Valley Unified Air Pollution Control District, No....

2010-05-21

231

40 CFR 81.40 - Metropolitan San Antonio Intrastate Air Quality Control Region.  

Science.gov (United States)

...2009-07-01 false Metropolitan San Antonio Intrastate Air Quality Control Region...Regions § 81.40 Metropolitan San Antonio Intrastate Air Quality Control Region. The Metropolitan San Antonio Intrastate Air Quality...

2009-07-01

232

The geology and petrology of Volcán San Juan (Nayarit, México) and the compositionally zoned Tepic Pumice  

Science.gov (United States)

Volcán San Juan is the westernmost Quaternary composite volcano in the Mexican Volcanic Belt. Its activity is divided into three stages of decreasing eruptive volume. During stage-1 activity, the main cone of San Juan and the adjacent Cerro Alto grew to a combined volume of ˜60 km 3 through eruption of hornblende-bearing andesites, dacites, and rhyodacites. Stage 1 included explosive eruptions of hornblende-dacite and an andesite dated at 33,750 a (years ago) and 23,010 a. Stage-2 activity involved a major Plinian eruption 14,770 a that produced the hypersthene-hornblende-bearing, compositionally zoned, rhyodacitic-andesitic Tepic Pumice and led to formation of an oval-shaped caldera 4×1 km in diameter. Tepic, the capital city of Nayarit State, with a population of ˜250,000, lies at the NE foot of Volcán San Juan. This location was buried under 2-9 m of rhyodacitic pumice-fall deposits from the Tepic Pumice eruption. Erosion has since removed virtually all exposures of Tepic Pumice >15 km from the caldera. The estimated volume of erupted tephra is 5.6 km 3, equivalent to 1.2 km 3 of magma. Modeling of the eruption dynamics indicates that as the eruption evolved the column height increased from ˜15 km to ˜24 km and maximum mass discharge rate increased from ˜3×10 6 kg/s to ˜6×10 7 kg/s. During stage-3 activity, a hornblende-andesitic lava dome partially filled the caldera and sent block lava flows down the north slope of the cone; total erupted volume was ˜0.55 km 3. Compared to other composite volcanoes of the western Mexican Volcanic Belt, the products from San Juan have the highest Sr contents and the lowest Rb, Y, Yb, and Lu contents, resulting in high La/Yb and Sr/Y, with low Rb/Sr. These observations indicate a strong slab-melt component at San Juan, consistent with its proximity to the Middle America Trench where young, hot lithosphere is subducting. The San Juan andesites, dacites, and rhyodacites also have relatively high 87Sr/ 86Sr, 206Pb/ 204Pb, 207Pb/ 204Pb, and 208Pb/ 204Pb, and low ?Nd values compared to these other volcanoes, which appear to reflect significant crustal contamination of San Juan's magmas.

Luhr, James F.

2000-01-01

233

The radiological accident in San Salvador  

International Nuclear Information System (INIS)

On 5 February 1989, a radiological accident occurred at an industrial irradiation facility near San Salvador, the capital of the Republic of El Salvador. Prepackaged medical products are sterilized at the facility by irradiation by means of an intensely radioactive cobalt-60 source in a movable source rack. The accident happened when this source rack became stuck in the irradiation position. The operator bypassed the irradiator's already degraded safety systems and entered the radiation room with two other workers to free the source rack manually. The three workers were exposed to high radiation doses and developed the acute radiation syndrome. Their initial hospital treatment in San Salvador and subsequent more specialized treatment in Mexico City were effective in countering the acute effects. However, the legs and feet of two of the three men were so seriously injured that amputation was required. The worker who had been most exposed died six and a half months after the accident, his death being attributed to residual lung damage due to irradiation, exacerbated by injury sustained during treatment. The report details the events leading up to the accident, the circumstances of the accident itself and the response to it. From the facts established, lessons are derived for operators and suppliers of irradiators, national authorities, medical staff and international organizations. Detailed information on dosimetric and medical aspects of the accident for the specialist reader is presented in the appendices and annexes. 20 figs, 9 tabs, 24 photographs

1989-02-05

234

Water chemistry of San Marcos area, Guatemala  

Energy Technology Data Exchange (ETDEWEB)

Two well-equilibrated Na-Cl geothermal liquids are recognisable in the San Marcos area. Both have the same Cl concentration (540 mg/kg) and the same isotopic composition ({delta}D of -66.5 per mille and {delta}{sup 18}O of -9 per mille) under reservoir conditions, but they come from two distinct aquifers with different temperatures , i.e. 240degC below La Cimarrona and 185degC below La Castalia. The numerous thermal Na-Cl to Na-Cl-HCO{sub 3} springs located in the San Marcos areas originate through dilution and boiling of these two geothermal liquids and different degrees of re-equilibration at lower temperatures. Silica and K contents are useful in discriminating between dilution, boiling and re-equilibration phenomena. Thermal Na-HCO{sub 3} waters, generated through conductive heat transfer or input of geothermal vapor or gases from below, delineate the extent of the geothermal reservoir(s) at depth. (Author)

Marini, Luigi [Universita di Genova, Dip. di Scienze della Terra, Genova (Italy); Cioni, Roberto; Guidi, Massimo [CNR, Ist. di Geocronologia e Geochimica Isotopica, Pisa (Italy)

1998-06-01

235

33 CFR 117.193 - San Leandro Bay.  

Science.gov (United States)

...Waters 1 2010-07-01 2010-07-01 false San Leandro Bay. 117.193 Section 117.193 Navigation and Navigable...REGULATIONS Specific Requirements California § 117.193 San Leandro Bay. The drawspans of the California...

2010-07-01

236

COSMOS (County of San Mateo Online System). A Searcher's Manual.  

Science.gov (United States)

Operating procedures are explained for COSMOS (County of San Mateo Online System), a computerized information retrieval system designed for the San Mateo Educational Resources Center (SMERC), which provides interactive access to both ERIC and a local file of fugitive documents. COSMOS hardware and modem compatibility requirements are reviewed,…

San Mateo County Superintendent of Schools, Redwood City, CA. Educational Resources Center.

237

Characterization of alumina using small angle neutron scattering (SANS)  

International Nuclear Information System (INIS)

Alumina powder was synthesized from an aluminium precursor and studied using small angle neutron scattering (SANS) technique and complemented with transmission electron microscope (TEM). XRD measurement confirmed that the alumina produced was high purity and highly crystalline ?phase. SANS examination indicates the formation of mass fractals microstructures with fractal dimension of about 2.8 on the alumina powder. (Author)

2007-01-01

238

33 CFR 117.984 - San Bernard River.  

Science.gov (United States)

...Waters 1 2009-07-01 2009-07-01 false San Bernard River. 117.984 Section 117.984 Navigation and Navigable...REGULATIONS Specific Requirements Texas § 117.984 San Bernard River. The draw of the Union Pacific railroad...

2009-07-01

239

Perspectives of San Juan healthcare practitioners on the detection deficit in oral premalignant and early cancers in Puerto Rico: a qualitative research study  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Abstract Background In Puerto Rico, relative to the United States, a disparity exists in detecting oral precancers and early cancers. To identify factors leading to the deficit in early detection, we obtained the perspectives of San Juan healthcare practitioners whose practice could be involved in the detection of such oral lesions. Methods Key informant (KI) interviews were conducted with ten clinicians practicing in or around San Juan, Puerto Rico. We then tri...

Morse Douglas E; Vélez Vega Carmen M; Psoter Walter J; Vélez Himilce; Buxó Carmen J; Baek Linda S; Elias Augusto; Ayendez Melba

2011-01-01

240

Abundancia y distribución de las especies ícticas (Osteichthyes del río San Francisco-Cosquín, Córdoba, Argentina  

Directory of Open Access Journals (Sweden)

Full Text Available It was made the characterization of the San Francisco-Cosquín Mountain River fish community, Córdoba, Argentina. Samples of fish were taken from selected sites from November 1998 to November 1999. Eleven species were recorded, eight of which are first reports for this river. Relative abundance for each species, species richness, diversity and dominance were estimated. Bryconamericus iheringi (Boulenger, 1887 y Jenynsia multidentata (Jenyns, 1842 were the most abundant.

Hued Andrea Cecilia

2001-01-01

 
 
 
 
241

Water-balance and groundwater-flow estimation for an arid environment: San Diego region, California  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The coastal-plain aquifer that underlies the San Diego City metropolitan area in southern California is a groundwater resource. The understanding of the region-wide water balance and the recharge of water from the high elevation mountains to the east needs to be improved to quantify the subsurface inflows to the coastal plain in order to develop the groundwater as a long term resource. This study is intended to enhance the conceptual understanding of the water balance and related recharge pro...

2012-01-01

242

Determination of Asymmetric Structure of Ganglioside-DPPC Mixed Vesicle Using SANS, SAXS, and DLS  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Functions of mammalian cell membrane microdomains being rich in glycosphingolipids, so-called rafts, are now one of the current hot topics in cell biology from the intimate relation to cell adhesion and signaling. However, little is known about the role of glycosphingolipids in the formation and stability of the domains. By the use of the inverse contrast variation method in small-angle neutron scattering (SANS), combined with small-angle x-ray scattering (SAXS) and dynamic light scattering (...

Hirai, Mitsuhiro; Iwase, Hiroki; Hayakawa, Tomohiro; Koizumi, Masaharu; Takahashi, Hiroshi

2003-01-01

243

Survey of SLAC lands for San Francisco garter snake  

Energy Technology Data Exchange (ETDEWEB)

The San Francisco garter snake (Thamnophis sirtalis tetrataenia) is protected under the endangered species act by the US Fish and Wildlife Service and the California Department of Fish and Game. The snake is restricted to the San Francisco peninsula and all known populations are in San Mateo County. In southeastern San Mateo County and northwestern Santa Clara County T. s. tetrataenia intergrades with T. s. infernalis. The Stanford Linear Accelerator Center (SLAC) lands are located in this area of intergradation. SLAC contracted Robert Seib and Ted Papenfuss to survey SLAC lands during September and early November 1981, to determine the possibility of occurrence of the San Francisco garter snake on their lands. Results of this investigation and management recommendations are presented here.

Seib, R.L.; Papenfuss, T.J.

1981-11-01

244

SAN MICHELE. ENTRE CIELO Y MAR / San Michele, between sky and sea  

Directory of Open Access Journals (Sweden)

Full Text Available ESUMEN El cementerio es uno de los tipos arquitectónicos más profundos y metafóricos. El concurso para la ampliación del cementerio de San Michele, convocado en 1998 por la administración Municipal de Venecia, se convierte en un excelente campo de pruebas sobre el que poder analizar el contexto histórico en torno a esta tipología, y su relación con la ciudad y el territorio. El estudio de este caso concreto nos permite descubrir personajes, relaciones casuales y hallazgos que se despliegan a lo largo del texto. La historia del cementerio de San Michele es también la crónica de la transformación de la ciudad de Venecia y su Laguna. Interpretando este concurso como un instrumento de investigación, el objetivo del artículo es el de comprender la realidad contemporánea de la arquitectura funeraria a través de la isla de San Michele, Venecia, y las propuestas finalistas de Carlos Ferrater, Enric Miralles y David Chipperfield. Una historia bajo la cual se vislumbran claves que nos sirven para reflexionar acerca del cementerio contemporáneo, la ciudad y el territorio.SUMMARY The cemetery is one of the most profound and metaphorical kinds of architecture. The competition for the extension of the San Michele Cemetery, called in 1998 by the Venice municipal administration, is an excellent testing ground on which to analyse the historical context surrounding this type of architecture, and its relationship with the city and the region. The study of this particular case allows us to uncover characters, casual relationships and findings that unfold throughout the text. The history of the San Michele cemetery is also the chronicle of the transformation of the city of Venice and its Lagoon. Interpreting this competition as a research tool, the aim of the paper is to understand the contemporary reality of funerary architecture through the island of San Michele, Venice, and the finalist proposals of Carlos Ferrater, Enric Miralles and David Chipperfield. It is a history in which keys are glimpsed that serve our reflection about the contemporary cemetery, the city and the region.

Pablo Blázquez Jesús

2012-11-01

245

Spatiotemporal variation patterns of plants and animals in San Carlos de Apoquindo, central Chile Patrones de variación espaciotemporal de plantas y animales en San Carlos de Apoquindo, Chile central  

Digital Repository Infrastructure Vision for European Research (DRIVER)

I summarize what is known about the mediterranean ecosystem represented in San Carlos de Apoquindo (33º 23' S, 70º 31' W), a rugged area of 835 ha located ca. 20 km east of downtown Santiago on the Andean foothills. This site attracted numerous researchers during 1976-1990 because of its proximity to Santiago and its relatively protected status. I review the literature, and provide unpublished information on this site. A total of 132 literature entries describe the ecology of San Carlos de ...

Jaksic, Fabia?n M.

2001-01-01

246

SAN/CXFS test report to LLNL  

Energy Technology Data Exchange (ETDEWEB)

The primary objectives of this project were to evaluate the performance of the SGI CXFS File System in a Storage Area Network (SAN) and compare/contrast it to the performance of a locally attached XFS file system on the same computer and storage subsystems. The University of Minnesota participants were asked to verify that the performance of the SAN/CXFS configuration did not fall below 85% of the performance of the XFS local configuration. There were two basic hardware test configurations constructed from the following equipment: Two Onyx 2 computer systems each with two Qlogic-based Fibre Channel/XIO Host Bus Adapter (HBA); One 8-Port Brocade Silkworm 2400 Fibre Channel Switch; and Four Ciprico RF7000 RAID Disk Arrays populated Seagate Barracuda 50GB disk drives. The Operating System on each of the ONYX 2 computer systems was IRIX 6.5.6. The first hardware configuration consisted of directly connecting the Ciprico arrays to the Qlogic controllers without the Brocade switch. The purpose for this configuration was to establish baseline performance data on the Qlogic controllers / Ciprico disk raw subsystem. This baseline performance data would then be used to demonstrate any performance differences arising from the addition of the Brocade Fibre Channel Switch. Furthermore, the performance of the Qlogic controllers could be compared to that of the older, Adaptec-based XIO dual-channel Fibre Channel adapters previously used on these systems. It should be noted that only raw device tests were performed on this configuration. No file system testing was performed on this configuration. The second hardware configuration introduced the Brocade Fibre Channel Switch. Two FC ports from each of the ONYX2 computer systems were attached to four ports of the switch and the four Ciprico arrays were attached to the remaining four. Raw disk subsystem tests were performed on the SAN configuration in order to demonstrate the performance differences between the direct-connect and the switched configurations. After this testing was completed, the Ciprico arrays were formatted with an XFS file system and performance numbers were gathered to establish a File System Performance Baseline. Finally, the disks were formatted with CXFS and further tests were run to demonstrate the performance of the CXFS file system. A summary of the results of these tests is given.

Ruwart, T M; Eldel, A

2000-01-01

247

Pierre Baron et alii, On bosse ici, on reste ici ! La grève des travailleurs sans papiers : une aventure inédite  

Directory of Open Access Journals (Sweden)

Full Text Available Qu’est ce que « travailler sans papiers » veut dire ? Après une relative éclipse durant les décennies 1980/90, au profit d’une focalisation de l’attention sur l’immigration comme « source de problèmes », y a-t-il eu, grâce à la grève des sans-papiers, un retour dans le débat public à la figure de l’immigré comme travailleur? Telles sont les principales questions que les auteurs posent dans le cadre d’un contexte où la valeur travail occupe toujours une place centrale dans l’organisation socia...

Inês Espirito Santo

2012-12-01

248

The pyroclastic dikes of the Tertiary San Luis Potosí volcanic field: Implications on the emplacement of Panalillo ignimbrite  

Directory of Open Access Journals (Sweden)

Full Text Available Pyroclastic dikes emplaced along regional NW-SE faults in the Tertiary San Luis Potosí Volcanic Field consist of vitric pumice shards, rhyolite lithics, and broken crystals of quartz, sanidine, and biotite. These clasts display a parallel orientation inside the dikes and have developed devitrification structures after emplacement.The presence of these pyroclastic dikes associated to normal faults and their relation to the Oligocene pyroclastic sequences of the San Luis Potosí Volcanic Field suggests that they may represent the feeding conduits from which the Panalillo ignimbrite was erupted.

M. Gómez-Anguiano

2006-09-01

249

Cianobacterias del embalse San Roque (Córdoba, Argentina Cyanobacteria of the San Roque reservoir (Córdoba, Argentina  

Directory of Open Access Journals (Sweden)

Full Text Available Este trabajo es una contribución al conocimiento de las cianobacterias presentes en el embalse San Roque y forma parte de un estudio integral de la flora algal del mencionado embalse. Se citan 24 taxa correspondientes a los Ordenes Chroococcales (11, Nostocales (8 y Oscillatoriales (5. Synechocystis aquatilis, Gloeocapsa rupestris, Gomphosphaeria aponina, Chamaesiphon incrustans f. incrustans, Scytonema crispum, Tolypothrix distorta, Gloeotrichia pisum, Calothrix fusca, Trichodesmium lacustre, Geitlerinema splendidum, Lyngbya aestuarii y Borzia trilocularis son nuevas citas para la zona de estudio.This work is a contribution to the knowledge of the Cyanobacteria present in the San Roque reservoir and forms a part of an integral study of its algal flora. Twenty-four taxa are described and ilustrated: 11 Chroococcales, 8 Nostocales, and 5 Oscillatoriales. Synechocystis aquatilis, Gloeocapsa rupestris, Gomphosphaeria aponina, Chamaesiphon incrustans f. incrustans, Scytonema crispum, Tolypothrix distorta, Gloeotrichia pisum, Calothrix fusca, Trichodesmium lacustre, Geitlerinema splendidum, Lyngbya aestuarii and Borzia trilocularis.

Inés Claudia Daga

2011-12-01

250

SANS and dynamic light scattering to investigate the viscosity of toluene under high pressure up to 1800 bar  

International Nuclear Information System (INIS)

We present a joint experimental study of small angle neutron scattering (SANS) and dynamic light scattering (DLS) under high pressures up to 1800 bar on a colloidal suspension, which consists of a core–shell system made of sterically stabilized silica particles grafted with octadecyl chains in toluene. From the analysis of SANS contrast variation under pressure, we could estimate the amount of compression in both core and shell under the action of pressure. The DLS measurements under pressure yield a diffusion coefficient which enabled us together with the SANS result to evaluate the pressure-dependent viscosity of the dilute suspension which is to a good approximation the solvent viscosity on the basis of the Stokes–Einstein relation. The excellent comparison of the so-calculated pressure-dependent viscosities of toluene with literature values demonstrates the value of our method to measure viscosities under pressure

2008-03-01

251

Image and memory in San Victorino Imagen y memoria de la transformación urbana de San Victorino  

Digital Repository Infrastructure Vision for European Research (DRIVER)

From the analysis of the physical and functional transformations of San victorino’s sector in Bogotá’s centre, the author studies the dynamics which have taken part in the construction and configuration of the place, which has been chosen by the roll that has exerted in the development of the city. The objective of the article is to determine how urbanism, perhaps as science, takes part, re qualifies or powers spaces that have undergone deterioration processes, although they are suscepti...

2011-01-01

252

Imagen y memoria de la transformación urbana de San Victorino Image and memory in San Victorino  

Digital Repository Infrastructure Vision for European Research (DRIVER)

A partir del análisis de las transformaciones físicas y funcionales del sector de San Victorino en el centro de Bogotá, la autora estudia las dinámicas que han intervenido en la construcción y configuración del lugar, el cual ha sido escogido por el rol que ha ejercido en el desarrollo de la ciudad. El objetivo del artículo es determinar de qué manera el urbanismo, quizá como ciencia, interviene, recualifica o potencia espacios que han sufrido procesos de deterioro, pero que son susc...

2011-01-01

253

Demography of the San Francisco gartersnake in coastal San Mateo County, California  

Science.gov (United States)

The San Francisco gartersnake Thamnophis sirtalis tetrataenia has been federally listed as endangered since 1967, but little demographic information exists for this species. We examined the demography of a San Francisco gartersnake population on approximately 213 ha of California coastal prairie in San Mateo County, California, from 2007 to 2010. The best-supported mark-recapture model indicated annual variation in daily capture probabilities and annual survival rates. Abundance increased throughout the study period, with a mean total population from 2008 to 2010 of 443 (95% CI = 313-646) individuals. Annual survival was slightly greater than that of most other gartersnakes, with an annual probability of survival of 0.78 (0.55-0.95) in 2008-2009 and 0.75 (0.49-0.93) in 2009-2010. Mean annual per capita recruitment rates were 0.73 (0.02-2.50) in 2008-2009 and 0.47 (0.02-1.42) in 2009-2010. From 2008 to 2010, the probability of an increase in abundance at this site was 0.873, with an estimated increase of 115 (-82 to 326) individuals. The estimated population growth rate in 2008-2009 was 1.52 (0.73-3.29) and in 2009-2010 was 1.21 (0.70-2.17). Although this population is probably stable or increasing in the short term, long-term studies of the status of the San Francisco gartersnake at other sites are required to estimate population trends and to elucidate mechanisms that promote the recovery of this charismatic member of our native herpetofauna.

Halstead, Brian J.; Wylie, Glenn D.; Amarello, Melissa; Smith, Jeffrey J.; Thompson, Michelle E.; Routman, Eric J.; Casazza, Michael L.

2011-01-01

254

Petrología del plutón La Florida, sierra de San Luis Petrology of the La Florida stock, Sierra de San Luis  

Directory of Open Access Journals (Sweden)

Full Text Available El plutón La Florida se localiza en la parte central de la Sierra de San Luis y se aloja en metasedimentitas regionales de grado medio pertenecientes al grupo micaesquistos derivadas de subgrauvacas y areniscas. Es de morfología semicircular, ligeramente elongado en dirección oblicua a la foliación regional, la cual acompaña la forma del plutón en el contacto. Su composición es monzogranítica y marcadamente peraluminoso, y está compuesto por cuarzo, microclino, plagioclasa, muscovita, biotita y granate. El estudio detallado ha permitido establecer que el contenido de biotita de los monzogranitos disminuye hacia los bordes del cuerpo en tanto que la muscovita, generalmente porfiroblástica, aumenta, lo cual conduce a variaciones notables del índice de color de las rocas. Además, se registra una abundante pegmatización que forma tanto diques como cuerpos irregulares en el borde del intrusivo y también en las rocas de caja adyacentes al contacto. Esta zonación sería resultado del incremento de fluidos acuosos durante la etapa tardío magmática, que causaron reacciones subsólidas en la mineralogía ortomagmática. El magma está relacionado con el proceso subductivo desarrollado durante la orogenia famatiniana, muestra afinidad con fundidos sin-colisionales y un tren evolutivo compatible con magmas de tipo S. El plutón de La Florida exhibe algunas diferencias geológicas, petrográficas y composionales con otros granitoides sin-cinemáticos de la sierra de San Luis, encontrándose algunas similitudes solamente con rocas del cordón de El Realito.La Florida pluton is located in the central part of the Sierra de San Luis. It is a nearly semicircular-shape intrusion, slightly elongated perpendicularly to the main NNE-SSW country rocks foliation, which deforms at the pluton margins. The body is emplaced in medium-grade metamorphosed subgreywakes and sandstones-derived rocks of the Micaschist Group. Intrusive rocks are mostly greyish medium to coarse-grained peraluminous monzogranites, composed of quartz, microcline, plagioclase, muscovite, biotite and minor garnet. Biotite content decreases from the core to the margin of the pluton while muscovite, usually forming up to 4 cm-long porphyroblasts, and garnet amounts increase in such direction. This leads to a remarkable variation of the colour index across the body, grading from 12 % to 0 % at the contact with the country rocks. Abundants dykes and irregular bodies of pegmatites intrude the outer parts of the pluton as well as the adjacent metasedimentary country rocks. The mineralogical zonation and the increase of pegmatization to the margins is interpreted here as the result of the enrichment in water-rich late-magmatic fluids which caused subsolid reactions with the minerals cristallized during the orthomagmatic stage. The magmatism is related to the Famatinian subduction, showing a syn-collisional affinity and S-type evolutionary trend. However, several differences have been found between La Florida and others syn-kinematic S-type granitoids from the Sierra de San Luis.

E. Carol

2007-09-01

255

Near-Surface Structure of the Peninsula Segment of the San Andreas Fault, San Francisco Bay Area, California  

Science.gov (United States)

The peninsula segment of the San Andreas Fault (SAF) is a section of the fault that has the potential to produce the next large earthquake in the San Francisco Bay Area, yet the slip history of the peninsula segment is relatively unknown. In most places, the surface location of the SAF has been determined primarily on the basis of geomorphic features and from mapping surface ruptures associated with the 1906 M7.9 San Francisco earthquake. To more precisely locate traces of the SAF along the San Francisco peninsula in the subsurface, we acquired a high-resolution seismic imaging survey, using both seismic refraction and reflection profiling, south of Upper Crystal Springs Reservoir near Woodside, California in June 2012. We acquired coincident P- and S-wave data using a 60-channel seismograph system connected via cable to 40-Hz vertical-component and 4-Hz horizontal-component geophones, with spacing at 1-m intervals along a 60-m-long transect across the SAF. Seismic sources (shots) were generated by hammer impacts on a steel plate or aluminum block at each geophone location. All shots were recorded on all channels. This survey design permitted simultaneous acquisition of reflection and refraction data such that both refraction tomography and reflection images were developed. Analysis of the P- and S-wave data, using refraction tomography, shows abrupt variations in the P-wave (Vp) and S-wave (Vs) velocities, including the 1,500 m/s velocity contour that outlines the top to groundwater and images of Vp/Vs and Poisson's ratios. P-wave velocities range from about 700 m/s at the surface to more than 4000 m/s at 20-m depth. S-wave velocities range from about 300 m/s at the surface to about 800 m/s at 20-m depth. The combined data indicate that the near-surface trace of the SAF dips steeply to the southwest in the upper few tens of meters. Variations in the velocity images also suggest the possibility of two additional near-surface fault traces within about 25 m of the main 1906 fault zone. An unmigrated reflection image displays diffraction hyperbolae that are consistent with fault traces inferred from other images. These data aid ongoing paleoseismological investigations along the SAF because the seismic data precisely locate the main fault trace and auxiliary faults that may contribute to the earthquake hazards associated with the fault zone. Furthermore, the seismic images provide insights into near-surface fault structure and P- and S-wave velocities, which can be important in understanding strong shaking resulting from future earthquakes along this segment of the SAF.

Rosa, C.; Catchings, R.; Rymer, M. J.; Goldman, M.; Grove, K.; Prentice, C. S.

2013-12-01

256

Sequence Stratigraphy of the Dakota Sandstone, Eastern San Juan Basin, New Mexico, and its Relationship to Reservoir Compartmentalization  

Energy Technology Data Exchange (ETDEWEB)

This research established the Dakota-outcrop sequence stratigraphy in part of the eastern San Juan Basin, New Mexico, and relates reservoir quality lithologies in depositional sequences to structure and reservoir compartmentalization in the South Lindrith Field area. The result was a predictive tool that will help guide further exploration and development.

Varney, Peter J.

2002-04-23

257

Depósitos descheelita asociados a lamprófiros/biotititas departamento San Martín, San Luis / Scheelite oredeposit associated with lamprophyres and biotitite in San Martín District, SanLuis province  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish En el noreste de la sierra deSan Luis se encuentran numerosos yacimientos de wolframio. En el departamentoSan Martín hay tres grupos mineros: Los Avestruces, La Aspereza y CerritoBlanco. La geología del área está constituida por rocas del ComplejoMetamórfico Conlara, compuesto por esquistos cuarzo-m [...] icáceos de rumboaproximado N300º y por granitoides y pegmatitas. Además, hay lamprófiroscalcoalcalinos sobresaturados que conforman cuerpos subverticales de rumboNO-SE a O-E. Hacia la salbanda se incrementa la cantidad de biotita hasta un80-90% constituyendo una roca denominada biotitita que sería producto deprocesos metasomáticos y posterior cataclasis del lamprófiro. La biotititaresulta enriquecida en potasio, rubidio y wolframio, entre otros elementos. Lamineralización scheelítica, en ganga de cuarzo y biotita y/o turmalina, sedispone en vetas lenticulares que se alojan frecuentemente en el contacto entrelamprófiro/biotitita y roca de caja. La scheelita se dispone en ojos en losplanos de esquistosidad de la biotitita y diseminada en el cuarzo. Lamineralización de las venas ha tenido lugar a partir de fluidos de composicióncompleja XH2O: 0,87/0,82 - XCO2: 0,11/0,16 - XNaCl:0,015/0,013 - (CH4) y la scheelita precipitó por un proceso dedesmezcla por debajo de 320°C y 2,3 kb según el estudio de las inclusionesfluidas. La deformación de la fase achaliana y la intrusión del batolito LasChacras-Piedras Coloradas (Devónico a Carbonífero) son los eventos quepromovieron la removilización de fluidos de los sedimentos del basamento, sucanalización en fracturas, y el metasomatismo y la mineralización. Abstract in english Towards thenortheast of the Sierra de San Luis several wolfram ore deposits occur. In SanMartín district they are divided into three groups: Los Avestruces, LaEsperanza and Cerrito Blanco. The geology of this area is formed of the Conlarametamorphic complex composed of schists (with a strike of 300º [...] north),granitoids and pegmatites. In the same area subsaturated chalco-alkalinelamprophyres also appear as subvertical bodies with NW-NE strikes. Toward theboundaries of these rocks, the amount of biotite rises gradually from 80 to 90%developing a biotitite rock due to metasomatic processes and the superimposeddeformation. This biotitite is rich in K, Rb and W among other elements. Thescheelite mineralization (with quartz, biotite and tourmaline as non oreminerals) occurs in veins that are usually hosted between the lamprophyres andthe wall rocks. Scheelite also appears between the schist planes of thebiotitite rocks as well as disseminated crystals in quartz aggregates. Thismineralization took place from fluids with XH2O: 0.87/0.82 - XCO2:0.11/0.16 - XNaCl: 0.015/0.013 - (CH4) meanwhile the scheelite,according to the fluid inclusions studies, precipitated from unmixing processesbelow 320°C and 2.3 kb. Achaliana orogeny and the intrusion of LasChacras-Piedras Coloradas batholiths (Devonian-Carboniferous) were theresponsible for the slight rise of the fluids from the basement, the generationof fault structures through which they rose, the metasomatism and themineralization.

Montenegro, Teresita; Etcheverry, Ricardo O.; Leal, Pablo R.; De Brodtkorb, Milka K..

258

Depósitos descheelita asociados a lamprófiros/biotititas departamento San Martín, San Luis Scheelite oredeposit associated with lamprophyres and biotitite in San Martín District, SanLuis province  

Directory of Open Access Journals (Sweden)

Full Text Available En el noreste de la sierra deSan Luis se encuentran numerosos yacimientos de wolframio. En el departamentoSan Martín hay tres grupos mineros: Los Avestruces, La Aspereza y CerritoBlanco. La geología del área está constituida por rocas del ComplejoMetamórfico Conlara, compuesto por esquistos cuarzo-micáceos de rumboaproximado N300º y por granitoides y pegmatitas. Además, hay lamprófiroscalcoalcalinos sobresaturados que conforman cuerpos subverticales de rumboNO-SE a O-E. Hacia la salbanda se incrementa la cantidad de biotita hasta un80-90% constituyendo una roca denominada biotitita que sería producto deprocesos metasomáticos y posterior cataclasis del lamprófiro. La biotititaresulta enriquecida en potasio, rubidio y wolframio, entre otros elementos. Lamineralización scheelítica, en ganga de cuarzo y biotita y/o turmalina, sedispone en vetas lenticulares que se alojan frecuentemente en el contacto entrelamprófiro/biotitita y roca de caja. La scheelita se dispone en ojos en losplanos de esquistosidad de la biotitita y diseminada en el cuarzo. Lamineralización de las venas ha tenido lugar a partir de fluidos de composicióncompleja XH2O: 0,87/0,82 - XCO2: 0,11/0,16 - XNaCl:0,015/0,013 - (CH4 y la scheelita precipitó por un proceso dedesmezcla por debajo de 320°C y 2,3 kb según el estudio de las inclusionesfluidas. La deformación de la fase achaliana y la intrusión del batolito LasChacras-Piedras Coloradas (Devónico a Carbonífero son los eventos quepromovieron la removilización de fluidos de los sedimentos del basamento, sucanalización en fracturas, y el metasomatismo y la mineralización.Towards thenortheast of the Sierra de San Luis several wolfram ore deposits occur. In SanMartín district they are divided into three groups: Los Avestruces, LaEsperanza and Cerrito Blanco. The geology of this area is formed of the Conlarametamorphic complex composed of schists (with a strike of 300º north,granitoids and pegmatites. In the same area subsaturated chalco-alkalinelamprophyres also appear as subvertical bodies with NW-NE strikes. Toward theboundaries of these rocks, the amount of biotite rises gradually from 80 to 90%developing a biotitite rock due to metasomatic processes and the superimposeddeformation. This biotitite is rich in K, Rb and W among other elements. Thescheelite mineralization (with quartz, biotite and tourmaline as non oreminerals occurs in veins that are usually hosted between the lamprophyres andthe wall rocks. Scheelite also appears between the schist planes of thebiotitite rocks as well as disseminated crystals in quartz aggregates. Thismineralization took place from fluids with XH2O: 0.87/0.82 - XCO2:0.11/0.16 - XNaCl: 0.015/0.013 - (CH4 meanwhile the scheelite,according to the fluid inclusions studies, precipitated from unmixing processesbelow 320°C and 2.3 kb. Achaliana orogeny and the intrusion of LasChacras-Piedras Coloradas batholiths (Devonian-Carboniferous were theresponsible for the slight rise of the fluids from the basement, the generationof fault structures through which they rose, the metasomatism and themineralization.

Teresita Montenegro

2009-06-01

259

Phoenix Landing Ellipse Over San Francisco  

Science.gov (United States)

This map compares the size of the area where NASA's Phoenix Mars Lander is expected to land, called the landing ellipse (red), to the size of the San Francisco Bay Area. Phoenix has a 99.9 percent probability of landing within the area denoted by its landing ellipse, a region in the northern plains of Mars centered at approximately 68 degrees north latitude, 233 degrees east longitude. The ellipse is about 70 kilometers (44 miles) long. Phoenix is most likely to land near the center of the ellipse, and least likely to land at its very edges. The Phoenix Mission is led by the University of Arizona, Tucson, on behalf of NASA. Project management of the mission is by NASA's Jet Propulsion Laboratory, Pasadena, Calif. Spacecraft development is by Lockheed Martin Space Systems, Denver.

2008-01-01

260

San Andreas Fault in the Carrizo Plain  

Science.gov (United States)

The 1,200-kilometer (800-mile)San Andreas is the longest fault in California and one of the longest in North America. This perspective view of a portion of the fault was generated using data from the Shuttle Radar Topography Mission (SRTM), which flew on NASA's Space Shuttle last February, and an enhanced, true-color Landsat satellite image. The view shown looks southeast along the San Andreas where it cuts along the base of the mountains in the Temblor Range near Bakersfield. The fault is the distinctively linear feature to the right of the mountains. To the left of the range is a portion of the agriculturally rich San Joaquin Valley. In the background is the snow-capped peak of Mt. Pinos at an elevation of 2,692 meters (8,831 feet). The complex topography in the area is some of the most spectacular along the course of the fault. To the right of the fault is the famous Carrizo Plain. Dry conditions on the plain have helped preserve the surface trace of the fault, which is scrutinized by both amateur and professional geologists. In 1857, one of the largest earthquakes ever recorded in the United States occurred just north of the Carrizo Plain. With an estimated magnitude of 8.0, the quake severely shook buildings in Los Angeles, caused significant surface rupture along a 350-kilometer (220-mile) segment of the fault, and was felt as far away as Las Vegas, Nev. This portion of the San Andreas is an important area of study for seismologists. For visualization purposes, topographic heights displayed in this image are exaggerated two times.The elevation data used in this image was acquired by SRTM aboard the Space Shuttle Endeavour, launched on February 11, 2000. SRTM used the same radar instrument that comprised the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) that flew twice on Endeavour in 1994. SRTM was designed to collect three-dimensional measurements of Earth's land surface. To collect the 3-D SRTM data, engineers added a mast 60 meters (about 200 feet) long, installed additional C-band and X-band antennas, and improved tracking and navigation devices. The mission is a cooperative project between the NASA, the National Imagery and Mapping Agency (NIMA) of the U.S. Department of Defense, and the German and Italian space agencies. It is managed by NASA's Jet Propulsion Laboratory, Pasadena, Calif, for NASA's Earth Science Enterprise, Washington, D.C. JPL is a division of the California Institute of Technology in Pasadena.Distance to Horizon: 73 kilometers (45.3 miles) Location: 35.42 deg. North lat., 119.5 deg. West lon. View: Toward the Southeast Date Acquired: February 16, 2000 SRTM, December 14, 1984 Landsat Image: NASA/JPL/NIMA

2000-01-01

 
 
 
 
261

VRML Repository: San Diego Supercomputing Center  

Science.gov (United States)

VRML (Virtual Reality Modeling Language) "is a standard language for describing interactive 3-D objects and worlds delivered across the Internet." One of the best and most comprehensive collections of VRML information is the VRML Repository, provided by the San Diego Supercomputing Center. Annotated links are available in the areas of hardware and software; documentation; and worlds, sounds, and textures. There are also links to other sites of interest, mailing lists and newsgroups, and companies and universities. Two of the more useful links from this page are to user's guides and browsers. The browser guide is organized by both version of VRML (1.0 or 2.0) and platform. To understand how to turn your desktop into a virtual .wrl, this is an indispensable site.

262

The San Fernando Observatory video Stokes polarimeter  

Science.gov (United States)

A study was conducted to determine the suitability of the San Fernando Observatory's 61 cm (24 inch) aperture vacuum solar telescope and 3 m (118 inch) focal length vacuum spectroheliograph for Stokes Polarimetry measurements. The polarization characteristics of these two instruments was measured by determining their Mueller matrices as a function of telescope orientation, field angle, wavelength, grating type, and position of the measuring beam in the telescope entrance window. In general, the polarizing and depolarizing properties are small so that inversion of the system Mueller matrix will permit the accurate measurement of Stokes profiles for vector magnetic field determination. A proposed polarimeter design based on the use of a TV camera system to simultaneously scan six different polarization components of a given line profile is described. This design, which uses no rotating optics or electronic modulators and makes efficient use of the available irradiance, promises to yield high quality vector magnetograms.

Richter, P. H.; Zeldin, L. K.; Loftin, T. A.

1985-01-01

263

Stratigraphy, sedimentology and paleontology of lower Eocene San Jose formation, central San Juan basin, New Mexico  

Energy Technology Data Exchange (ETDEWEB)

The lower Eocene San Jose Formation in the central portion of the San Juan basin (Gobernador-Vigas Canyon area) consists of the Cuba Mesa, Regina, Llaves, and Tapicitos Members. Well log data indicate that, from its 100-m thickness, the Cuba Mesa Member thins toward the basin center and pinches out to the northeast by lat. 36{degree}40'N, long. 107{degree}19'W. The Regina Member has the most extensive outcrops in the central basin, and it decreases in sandstone/mud rock ratio to the north. The Llaves and Tapicitos Members occur only at the highest elevations, are thin due to erosion, and are not mappable as separate units. Well log data and 1,275 m of measured stratigraphic section in the Regina, Llaves, and Tapicitos Members indicate these strata are composed of approximately 35% medium to coarse-grained sandstone and 65% fine-grained sandstone and mud rock. Sedimentology and sediment-dispersal patterns indicate deposition by generally south-flowing streams that had sources to the northwest, northeast, and east. Low-sinuosity, sand-bedded, braided( ) streams shifted laterally across about 1 km-wide channel belts to produce sheet sandstones that are prominent throughout the San Jose Formation. Subtle levees separated channel environments from floodplain and local lacustrine areas. Avulsion relocated channels periodically to areas on the floodplain, resulting in the typically disconnected sheet sandstones within muddy overbank deposits of the Regina Member.

Lucas, S.G.; Smith, L.N. (New Mexico Museum of Natural History, Albuquerque (USA))

1989-09-01

264

Structural response of polyelectrolyte dendrimer towards molecular protonation: the inconsistency revealed by SANS and NMR  

International Nuclear Information System (INIS)

Polyamidoamine (PAMAM) dendrimers and their charged state in deuterium oxide have been investigated with proton pulsed field gradient diffusion nuclear magnetic resonance (PFG-NMR) and small-angle neutron scattering (SANS) techniques. NMR measurements suggest that significant variation of the hydrodynamic radius, calculated by the Stokes-Einstein relation with appropriate surface conditions, is observed upon increasing the molecular protonation. However, a comparative SANS experiment indicates little dependence of the dendrimer global size, in terms of its radius of gyration, on molecular protonation. The inconsistency indicates the necessity of incorporating the effect of molecular interface modification and molecular porosity provided by dressed counterions, when dynamical measurements are used for the determination of the structural characteristics of ionic soft colloids even in dilute suspensions.

2012-02-15

265

Microstructural changes in long-time thermally exposed Ni-base superalloy studied by SANS  

Energy Technology Data Exchange (ETDEWEB)

The SANS experiment was a crucial part of a broader investigation of the long-time structural stability of the polycrystalline Ni-base superalloy and its effect on the subsequent creep characteristics. The results of the creep tests have shown that a long isothermal exposure at temperatures of 430 C and 650 C up to 25000 h changed the deformation ability and creep life of the exposed specimens. While structure analyses (TEM) showed no evidence of a morphological and/or dimensional {gamma}{sup '} change, the SANS technique was able to reveal significant changes of the morphology of {gamma}{sup '} precipitates already after the shortest applied thermal exposition, 2000 h. The resulting size distributions, distance distributions, mean sizes and mean distances between the precipitates made evident that both the size and the distance increase in the bulk of the alloy with increasing thermal exposure even at such relatively low temperatures. (orig.)

Zrnik, J.; Hornak, P.; Vrchovinsky, V. [Technical University Kosice, Letna 9, 04200 Kosice (Slovakia); Strunz, P. [Hahn-Meitner-Institut (HMI), Glienicker Str. 100, 14109 Berlin (Germany); Nuclear Physics Institute, 25068 Rez near Prague (Czech Republic); Wiedenmann, A. [Hahn-Meitner-Institut (HMI), Glienicker Str. 100, 14109 Berlin (Germany)

2002-07-01

266

Stable, rapid rate of slip since inception of the San Jacinto fault, California  

Science.gov (United States)

California, where the San Jacinto fault (SJF) and San Andreas fault (SAF) accommodate the majority of the dextral shear deformation between the Pacific and North American plates, initiation of the SJF led to an apparent decline in the slip rate of the SAF. Previous studies suggest that since then, slip rate has covaried between these faults (possibly due to changes in fault strength, variation in topographic loading along a fault, or the development of new faults) and that presently the SJF is the dominant plate boundary structure. However, we dated displaced sedimentary deposits and landforms over three distinct time intervals since ~700 ka, and our results imply a constant slip rate of 12.1+3.4/-2.6 mm/yr. This rate is similar to the fault's lifetime rate and from rates derived from geodesy, suggesting that since the SJF initiated, its slip rate has remained relatively stable and does not exceed that of the SAF.

Blisniuk, Kimberly; Oskin, Michael; MéRiaux, Anne-Sophie; Rockwell, Thomas; Finkel, Robert C.; Ryerson, Frederick J.

2013-08-01

267

[Pteridophytes that indicate environmental alteration in the temperate forest of San Jerónimo Amanalco, Texcoco, Mexico].  

Science.gov (United States)

Pteridophytes that indicate environmental alteration in the San Jer6nimo Amanalco temperate forest, Texcoco, Mexico. The patterns of distribution of 26 pteridophyte species were studied as possible indicators of environmental alteration in the temperate forest of San Jer6nimo Amanalco, Texcoco, State of Mexico. The presence and abundance of the pteridoflora was studied in relation to edaphic, topographic and vegetation variables in 100 sampling locations within an area of 494 hectares. The relationship between these variables was studied using Canonical Correspondence Analysis. Five landscapes were recognized in the study zone according to the degree of deterioration: severe erosion, erosion, mountain with moderate reversible deterioration, mountain with no evident deterioration, and canyon with no evident deterioration. Cheilanthes bonariensis and Pellaea ternifolia are indicators of environmental degradation. The taxa that only grow in landscapes without apparent alteration are Adiantum andicola, Adiantum poiretii, Argyrochosma incana, Asplenium blepharophorum, Dryopteris pseudo filix-mas, Equisetum hyemale and Pteris cretica. PMID:19256434

Lucía Rodríguez, Romero; Pacheco, Leticia; Zavala Hurtado, José Alejandro

2008-06-01

268

SANS investigation of microstructure evolution in high chromium ODS steels after thermal ageing  

Science.gov (United States)

In the present paper the small-angle neutron scattering (SANS) technique was used to investigate the phase separation in two oxide dispersion strengthened (ODS) ferritic steels, PM2000 and MA956, during isothermal ageing at 475 °C. The ferritic matrix of the investigated materials separates into Fe-rich ? and Cr-rich ?' phases during ageing at this temperature. The samples were measured under magnetic field in order to separate the nuclear and magnetic scattering intensities. The ratio of these two contributions was used to gain information on the chemical composition of the scatterers. The SANS measurements revealed the formation and subsequent growth of Cr-rich precipitates on the nanometer scale. The size distributions and the volume fractions of the precipitates were evaluated from the scattering data. Microhardness was found to significantly increase as a function of ageing time for both materials. The hardening is related to the formation of the Cr-rich ?' phase.

Száraz, Z.; Török, Gy.; Kršjak, V.; Hähner, P.

2013-04-01

269

Contractional Growth Structures Along the San Andreas Fault Borderland, Offshore Northern California  

Science.gov (United States)

Seismic reflection profiles from the southern Point Arena Basin, offshore northern California, image synorogenic Neogene-Quaternary sediments, which constrain the spatial and temporal deformation of three large (5 km half wavelength) anticlines. These anticlines are inversion structures, formed from middle Oligocene to the middle Miocene extension. There are two main periods of fold growth, which span the upper Miocene into the lower Pliocene and the upper Pliocene into the Pleistocene, respectively. Minor deformation continues today. The first period of deformation may be explained by a 23 degree clockwise change in the Pacific plate, relative to North America. The plate motion change causes a switch from a transtensional regime to a transpressional regime, due to oblique convergence of the Pacific and North America plates. Since 8 Ma there is no documented resolvable change in plate motion, suggesting subsequent deformation cannot be caused by an additional change in magnitude or direction of plate motion. Magnitude change in the component of strike-slip on the San Andreas fault system results in a magnitude change in the component of contraction in the adjacent San Andreas borderland. Spatial and temporal deformation in the southern Point Arena Basin may be related to periods in time when the strike-slip component of the San Andreas fault system is accommodated by strike-slip faults inboard (e.g. Hayward, Maacama, Calaveras, etc.), which may localize the contractional component farther inboard, resulting in a period of quiescence in the southern Point Arena Basin.

Scala, N. J.; Meltzer, A. S.

2002-12-01

270

SANS spectra of the fractal supernucleosomal chromatin structure models  

International Nuclear Information System (INIS)

The eukaryotic genome consists of chromatin-a nucleoprotein complex with hierarchical architecture based on nucleosomes, the organization of higher-order chromatin structures still remains unknown. Available experimental data, including SANS spectra we had obtained for whole nuclei, suggested fractal nature of chromatin. Previously we had built random-walk supernucleosomal models (up to 106 nucleosomes) to interpret our SANS spectra. Here we report a new method to build fractal supernucleosomal structure of a given fractal dimension or two different dimensions. Agreement between calculated and experimental SANS spectra was significantly improved, especially for model with two fractal dimensions—3 and 2.

2012-03-30

271

Estudio petrográfico de las facies piroclásticas de la Formación Cerro Varela en el sur de la Sierra de San Luis Petrographic study of the pyroclastic facies of the Cerro Varela Formation in the south of the Sierra de San Luis  

Directory of Open Access Journals (Sweden)

Full Text Available En la provincia de San Luis, existen tres sub-cuencas denominadas Las Salinas, Beazley y Mercedes. Estas cuencas corresponden a depocentros de rift elongados en sentido NO, que alojan rocas ígneas de edad triásica con espesores que llegan hasta los 4.000 metros. Las rocas ígneas de la Formación Cerro Varela forman parte del cerro homónimo que constituye los últimos asomos australes de la sierra de San Luis. Las riolitas triásicas que afloran en la sierra de Varela se disponen dentro de un esquema estructural extensional asociado a la formación de cuencas de tipo rift. Las unidades analizadas de la Formación Cerro Varela están compuestas por tobas cristalinas tanto de alto grado como de bajo grado de soldadura, de composición riolítica e interpretadas como depósitos originados por flujos piroclásticos. Por su litología, edad y contexto regional, las rocas de la Formación Cerro Varela integran el magmatismo gondwánico del Grupo Choiyoi de edad permotriásica de la Cordillera Frontal de Mendoza y San Juan.In the San Luis province, there are three sub-basins called Las Salinas, Beazley and Mercedes. These basins correspond to elongated rift depocenter with a NO orientation that host Triassic igneous rocks with thicknesses that reach 4,000 meters. The igneous rocks from Cerro Varela Formation, part of the homonym hill, is the last vestige of the southern Sierra San Luis. The Triassic rhyolites that crop up in the sierra de Varela, are placed within a structural pattern associated with the formation of extensional basins. Crystal tuffs of Cerro Varela are corresponds to tuffs with high and low degree of welding, of rhyolitic composition and interpreted as pyroclastic deposits. For its lithology, age and regional context, the rocks of the Cerro Varela Formation integrate the Gondwanic magmatism of Permo-Triassic age, related to the Choiyoi Group of the Cordillera Frontal of Mendoza and San Juan.

Amancay N. Martínez

2010-11-01

272

The Tuff of San Felipe: an extensive middle Miocene pyroclastic flow deposit in Baja California, Mexico  

Science.gov (United States)

We document the existence of a widespread Miocene ash-flow tuff sheet in northeastern Baja California, Mexico. The Tuff of San Felipe (new name) was erupted from a vent east of the Sierra San Felipe of NE Baja California at ca. 12.6 Ma. This is the only widespread middle Miocene pyroclastic flow deposit identified in northeastern Baja California. Its distinctive age and widespread distribution make it an important marker horizon for structural reconstruction of this part of the Gulf Extensional Province, which is on the Pacific plate. The vent position, near the modern Gulf of California coast, allows the possibility that exposures of the Tuff of San Felipe may be preserved east of the Gulf on the North America plate in Sonora, yielding a tie point for the past relative position of the two plates. This paper summarizes all known information including petrography, geochemistry, geochronology, paleomagnetics, geographic distribution, and field appearance of this important tuff. It is a densely welded, crystal-rich, lithic-lapilli pyroclastic flow deposit, with 5-15% alkali feldspar, and can be 180 m thick in some locations near the vent. The Tuff of San Felipe is >40 m thick up to 40 km SW of the vent and >10 m thick at least 25 km NNW of the vent. A minimum volume estimate for the deposit is 54 km 3. Some recent 40Ar/ 39Ar age determinations suggest that the tuff is about 12.6 Ma in age. In all locations studied, the Tuff of San Felipe has a unique, low-inclination, reversed magnetization, which may record a field transition or a geomagnetic excursion within reversed polarity subchron C5Ar.2r (12.401 to 12.678 Ma). This low-inclination magnetization, as well as the mineralogy and age, is key to correlating the tuff across the region, because deposits are highly disrupted by subsequent normal faulting and outcrops are sparse and discontinuous away from the vent. The documentation of these characteristics is important because the Tuff of San Felipe is a key structural marker for the subsequent development of the Pacific-North America plate boundary in the Gulf of California, and it will be important to identify this tuff in outcrops elsewhere on the Baja California Peninsula and on the North America plate in Sonora.

Stock, Joann M.; Lewis, Claudia J.; Nagy, Elizabeth A.

1999-11-01

273

Structure and Composition of the San Andreas Fault at Seismogenic Depths: Recent Results from the SAFOD Experiment  

Science.gov (United States)

The San Andreas Fault Observatory at Depth (SAFOD) was drilled into the San Andreas Fault Zone to study the physics of earthquake nucleation and rupture and determine the composition, physical properties, and mechanical behavior of an active, plate-bounding fault at seismogenic depths. SAFOD is located 10 km NW of Parkfield, CA, and penetrates a section of the fault that is moving through a combination of repeating microearthquakes and fault creep. During Phases 1 and 2 in the summers of 2004 and 2005, SAFOD was drilled vertically to a depth of 1.5 km and then deviated to penetrate the active San Andreas Fault Zone at a vertical depth of about 2.7 km. During Phase 3 in the summer of 2007, cores were acquired from holes branching off the main SAFOD borehole to directly sample fault and country rocks at depth. Geophysical logs and cuttings analyses conducted during Phases 1 and 2 define the San Andreas Fault Zone to be relatively broad (~250 m), containing several discrete, highly localized zones only 2-3 m wide that exhibit very low P- and S-wave velocities and low resistivity. Two of these zones have progressively deformed the cemented casing at measured depths of 3194 m and 3301 m, indicating that they are actively creeping shear zones. These active shear zones were targeted for coring during Phase 3. The 3194 m casing deformation zone lies ~100 m above a cluster of repeating M2 earthquakes that form the southwestern boundary of the creeping and microseismically active San Andreas Fault Zone. Casing deformation is most pronounced across the 3301 m zone; hence this zone is believed to accommodate most of the current creep deformation across the San Andreas Fault at this location. During Phase 3 we have obtained core from just outside the geologically defined San Andreas Fault Zone, at the boundary between the Salinian and Great Valley/Franciscan terranes, and from the active deformation zones at 3194 and 3301 m. The cores obtained from these deformation zones exhibit a variety of features indicating pronounced strain localization and probably marked weakening. These include highly sheared and foliated shales and siltstones, cataclasites, veined serpentinite and chert bodies, and compacted, cohesionless serpentine-bearing fault gouge, all juxtaposed in shear zones only a few meters wide. The occurrence of serpentinite is particularly significant, because serpentine and related minerals are widely regarded to be important in controlling frictional strength and the stability of sliding. The Phase 3 core samples will be extensively tested in the laboratory to study the composition, deformation mechanisms, physical properties and rheological behavior of fault rocks from the active traces of the San Andreas Fault at realistic in-situ conditions.

Hickman, S.; Zoback, M.; Ellsworth, W.; Kirschner, D.; Solum, J.

2007-12-01

274

Study of vibrations and stabilization of linear collider final doublets at the sub-nanometer scale; Etude des vibrations et de la stabilisation a l'echelle sous-nanometrique des doublets finaux d'un collisionneur lineaire  

Energy Technology Data Exchange (ETDEWEB)

CLIC is one of the current projects of high energy linear colliders. Vertical beam sizes of 0.7 nm at the time of the collision and fast ground motion of a few nanometers impose an active stabilization of the final doublets at a fifth of nanometer above 4 Hz. The majority of my work concerned vibrations and active stabilization study of cantilever and slim beams in order to be representative of the final doublets of CLIC. In a first part, measured performances of different types of vibration sensors associated to an appropriate instrumentation showed that accurate measurements of ground motion are possible from 0.1 Hz up to 2000 Hz on a quiet site. Also, electrochemical sensors answering a priori the specifications of CLIC can be incorporated in the active stabilization at a fifth of nanometer. In a second part, an experimental and numerical study of beam vibrations enabled to validate the efficiency of the numerical prediction incorporated then in the simulation of the active stabilization. Also, a study of the impact of ground motion and of acoustic noise on beam vibrations showed that an active stabilization is necessary at least up to 1000 Hz. In a third part, results on the active stabilization of a beam at its two first resonances are shown down to amplitudes of a tenth of nanometer above 4 Hz by using in parallel a commercial system performing passive and active stabilization of the clamping. The last part is related to a study of a support for the final doublets of a linear collider prototype in phase of finalization, the ATF2 prototype. This work showed that relative motion between this support and the ground is below imposed tolerances (6 nm above 0.1 Hz) with appropriate boundary conditions. (author)

Bolzon, B

2007-11-15

275

ASTER Images San Francisco Bay Area  

Science.gov (United States)

These images of the San Francisco Bay region were acquired on March 3, 2000 by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA's Terra satellite. Each covers an area 60 kilometers (37 miles) wide and 75 kilometers (47 miles) long. With its 14 spectral bands from the visible to the thermal infrared wavelength region, and its high spatial resolution of 15 to 90 meters (about 50 to 300 feet), ASTER will image the Earth for the next 6 years to map and monitor the changing surface of our planet.Upper Left: The color infrared composite uses bands in the visible and reflected infrared. Vegetation is red, urban areas are gray; sediment in the bays shows up as lighter shades of blue. Thanks to the 15 meter (50-foot) spatial resolution, shadows of the towers along the Bay Bridge can be seen.Upper right: A composite of bands in the short wave infrared displays differences in soils and rocks in the mountainous areas. Even though these regions appear entirely vegetated in the visible, enough surface shows through openings in the vegetation to allow the ground to be imaged.Lower left: This composite of multispectral thermal bands shows differences in urban materials in varying colors. Separation of materials is due to differences in thermal emission properties, analogous to colors in the visible.Lower right: This is a color coded temperature image of water temperature, derived from the thermal bands. Warm waters are in white and yellow, colder waters are blue. Suisun Bay in the upper right is fed directly from the cold Sacramento River. As the water flows through San Pablo and San Francisco Bays on the way to the Pacific, the waters warm up.Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is one of five Earth-observing instruments launched December 18, 1999, on NASA's Terra satellite. The instrument was built by Japan's Ministry of International Trade and Industry. A joint U.S./Japan science team is responsible for validation and calibration of the instrument and the data products. Dr. Anne Kahle at NASA's Jet Propulsion Laboratory, Pasadena, California, is the U.S. Science team leader; Moshe Pniel of JPL is the project manager. ASTER is the only high resolution imaging sensor on Terra. The primary goal of the ASTER mission is to obtain high-resolution image data in 14 channels over the entire land surface, as well as black and white stereo images. With revisit time of between 4 and 16 days, ASTER will provide the capability for repeat coverage of changing areas on Earth's surface.The broad spectral coverage and high spectral resolution of ASTER will provide scientists in numerous disciplines with critical information for surface mapping, and monitoring dynamic conditions and temporal change. Example applications are: monitoring glacial advances and retreats; monitoring potentially active volcanoes; identifying crop stress; determining cloud morphology and physical properties; wetlands evaluation; thermal pollution monitoring; coral reef degradation; surface temperature mapping of soils and geology; and measuring surface heat balance.

2000-01-01

276

SANS investigations of pore anisotropy in superplastically deformed ceramics  

Energy Technology Data Exchange (ETDEWEB)

Superplastically deformed samples of 3 mol% yttria stabilized tetragonal zirconia polycrystals (3Y-TZP) and 3Y-TZP with 20 wt% of Al{sub 2}O{sub 3} were studied by SANS with the aim to compare cavitation behaviours under different deformation conditions. Though the average size of cavities formed during deformation is so large that they can be measured only by high-resolution SANS techniques, conventional SANS method permitted us to measure their specific surface and aspect ratio quite effectively. Analysis of the two-dimensional SANS data clearly showed two qualitatively different cavitation regimes corresponding to the low-stress (low-strain rate and high-temperature) and high-stress conditions, respectively. In the latter case, a new type of flat pores transversal to the tension axis was observed, in addition to the usually present slightly prolate cavities.

Ryukhtin, Vasyl; Saroun, Jan; Harjo, Stefanus; Motohashi, Yoshinobu; Wiedenmann, Albrecht; Strunz, Pavel

2004-07-15

277

SANS investigations of pore anisotropy in superplastically deformed ceramics  

International Nuclear Information System (INIS)

Superplastically deformed samples of 3 mol% yttria stabilized tetragonal zirconia polycrystals (3Y-TZP) and 3Y-TZP with 20 wt% of Al2O3 were studied by SANS with the aim to compare cavitation behaviours under different deformation conditions. Though the average size of cavities formed during deformation is so large that they can be measured only by high-resolution SANS techniques, conventional SANS method permitted us to measure their specific surface and aspect ratio quite effectively. Analysis of the two-dimensional SANS data clearly showed two qualitatively different cavitation regimes corresponding to the low-stress (low-strain rate and high-temperature) and high-stress conditions, respectively. In the latter case, a new type of flat pores transversal to the tension axis was observed, in addition to the usually present slightly prolate cavities

2004-07-15

278

Los claustros del monasterio de San Jerónimo el Real  

Directory of Open Access Journals (Sweden)

Full Text Available The Monastery of San Jerónimo El Real (Madrid had a complex system of four cloisters in Renaissance and Baroque styles. The author studies the history of their construction. The old cloister dates from the beginning of the 16th century. Fray Lorenzo de San Nicolás designed the project for the main and definitive cloister; the construction began in 1672 and was terminated by the end of the century.

El Monasterio de San Jerónimo (Madrid dispuso de un complejo sistema de cuatro claustros del renacimiento y el barroco. El presente trabajo estudia la historia de su construcción. El viejo claustro es de comienzos del XVI. El autor del diseño del claustro principal y definitivo fue fray Lorenzo de San Nicolás. La construcción fue iniciada en 1672 y finalizada con el siglo.

Cadiñanos Bardeci, Inocencio

2007-09-01

279

Los nuevos Pañamanes en la isla de San Andrés  

Directory of Open Access Journals (Sweden)

Full Text Available Este trabajo aborda los procesos identitarios en la población continental colombiana que viajó a San Andrés a mediados de 1980, teniendo en cuenta el análisis de los fenómenos migratorios y el uso y la apropiación del espacio.

Gabriel Gilberto González

2009-07-01

280

Merchandising of cigarettes in San Francisco pharmacies: 27 years later  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Objective: To estimate changes since 1976 in the proportion of San Francisco pharmacies that sell cigarettes and to characterise the advertising of cigarettes and the merchandising of non-prescription nicotine replacement therapy (NRT) products in these retail establishments.

Eule, B.; Sullivan, M.; Schroeder, S.; Hudmon, K.

2004-01-01

 
 
 
 
281

San Sebastiani festivali varjutasid hiljutised terroriaktid / Aare Ermel  

Index Scriptorium Estoniae

San Sebastiani rahvusvahelisel filmifestivalil sai Suure Kuldse merikarbi tšiillase Orlando Lubberti film "Takso kolmele". Parima režissööri auhinna pälvis Jean-Pierre Ameris realistliku draamaga "C'est la vie". Ka teistest auhinnatutest

Ermel, Aare, 1957-2013

2001-01-01

282

Microstructure of magnetite doped elastomers investigated by SAXS and SANS  

International Nuclear Information System (INIS)

Some recent results on the SAXS and SANS investigations of the magnetic elastomers are presented. Samples were obtained by polymerizing dimethylsiloxane with Fe3O4 ferrofluid in a magnetic field and without magnetic field and characterized by XRD, SANS and SAXS. The SAXS maximum at large angles, obtained from magnetic elastomers, was fitted by using a Pseudo-Voigt function. It was found that the Fe3O4 particles lead to a change of the local structure of the elastomer, meaning the decrease of the quasi-crystalline phase and of the microstrains induced in the matrix. The average particle size obtained from SANS measurements agrees well with the average particle size determined by XRD and SAXS analysis. The splitting of the SANS intensity owing to an additional scattering in zero field reflects the existence of magnetic correlations inside the Q region of 0.005 -1

2008-01-01

283

Recalibrated turbulence profiles at San Pedro Mártir  

Scientific Electronic Library Online (English)

Full Text Available SciELO Mexico | Language: English Abstract in spanish La calibración de perfiles de turbulencia óptica medidos con el método SCIDAR generalizado ha sido recientemente revisada y corregida por Avila & Cuevas (2009). Basándonos en ese trabajo, aquí presentamos la corrección de todos los [...] perfiles de medidos con el SCIDAR generalizado en el Observatorio Astronómico Nacional de San Pedro Mártir. El perfil de mediano corregido conserva su estructura vertical general. El cociente promediado en altura de la mediana de los valores de corregidos sobre la mediana de los valores no corregidos es igual a 0.87. La mediana del seeing corregido en el sitio es 0.''68 ± 0."03. 4.2% menor que la mediana no corregida. Las medianas del seeing producido por turbulencia en los dos primeros kilómetros de altura sobre los telescopios de 1.5 m y 2.1 m de diámetro decrecen en un 15.8% y 13.6%, respectivamente. El ángulo isoplanático corregido tiene una mediana de 1."96 ± 0.''04. Abstract in english The calibration of optical turbulence profiles measured with the generalized SCIDAR technique has been recently reviewed and corrected by Avila & Cuevas (2009). Based on that work, here we present the correction of all the [...] er=0 src="../../../../../img/revistas/rmaa/v47n1/a6e1.jpg">profiles measured with a generalized SCIDAR at the Observatorio Astronómico Nacional of San Pedro Mártir. The median corrected profile conserves its overall vertical shape. The altitude-averaged ratio of the corrected median values over the uncorrected ones equals 0.87. The corrected median value of seeing at the site is 0.''68 ± 0."03, 4.2% lower than the median value obtained with the uncorrected profiles. The median values of the seeing produced by turbulence in the first 2 km above the 1.5 m and the 2.1 m telescopes decrease by 15.8% and 13.6%, respectively. The corrected isoplanatic angle has a median value of 1."96 ± 0."04.

Avila, R.; Sánchez, L. J.; Cruz-González, I.; Carrasco, E.; Castaño, V. M.

284

Edificio para ambulatorio San Francisco – (EE. UU.  

Directory of Open Access Journals (Sweden)

Full Text Available The 50,470 m2 the total area of the hospital is distributed as follows: 18,900 m2 for the 22 main clinics and for the additional clinics; 2,770 m2 for complementary activities; and the remaining 28,800 m2 for a parking lot with space for 700 cars. The building occupies a site that slopes strongly towards the north across which runs the pedestrian access from one of the circumference roads to the main façade; the access road for the vehicles leads to the back facade, where the natural slope of the ground has been taken advantage of to build the 5 storey parking building. The two main functions —the clinics and the parking house— are conveniently separated though connected with each other by means of corridors and lifts. The interior design of the clinics is very flexible so as to allow for further enlargements. The patients' waiting rooms are provided with a glazed façade and have a beautiful view over the San Francisco Bay and its surroundings. The construction is entirely of concrete and its structure is calculated ín such a manner as to allow for two additional storeys.Cuenta con una superficie total construida de 50.470 m2, repartidos de la siguiente forma: 18.900 se destinan a la distribución de 22 clínicas principales y otras secundarias; 2.770 a locales de actividades complementarias; y el resto, 28.800 m2, a aparcamiento con capacidad para 700 plazas. El edificio ocupa una parcela fuertemente inclinada hacia el norte, inclinación que permite el acceso peatonal a la clínica, por la fachada principal, desde una de las avenidas perimetrales; y el vehicular, por la fachada posterior, en donde, aprovechando el desnivel del terreno, se han organizado las cinco plantas del aparcamiento. Las dos funciones principales —clínicas y aparcamiento— se hallan convenientemente separadas, estableciéndose el enlace entre los distintos niveles mediante ascensores que relacionan las clínicas, el centro médico, los aparcamientos y las calles exteriores. A su vez, el área de las clínicas está servida por un grupo central de ascensores. El espacio interior reservado a las clínicas es altamente flexible, con el fin de posibilitar futuras modificaciones. Las salas de espera para los pacientes se localizan en el perímetro acristalado, dominando un amplio panorama de la bahía de San Francisco y de las zonas circundantes. La construcción se ha realizado en su totalidad de hormigón, con estructura calculada para la eventual incorporación de dos nuevas plantas.

Reid, John Lyon

1976-12-01

285

SANS (small-angle neutron scattering) from polymers and colloids  

Energy Technology Data Exchange (ETDEWEB)

Small-angle neutron scattering (SANS) has been remarkably successful in providing detailed quantitative structural information on complex everyday materials, such as polymers and colloids, which are often of considerable industrial as well as academic interest. This paper reviews some recent SANS experiments on polymers and colloids, including ferrofluids, and discusses the use of these apparently complex systems as general physical models of the liquid or solid state.

Hayter, J.B.

1987-01-01

286

San Gregorio mining: general presentation of the enterprise  

International Nuclear Information System (INIS)

This work is a project presented by San Gregorio Mine.This company is responsible for the extraction and gold ore deposits benefits in San Gregorio and East extension in Minas de Corrales. For this project was carried out an environmental impact study as well as and agreement with the LATU for the laboratory analyzes and the surface and groundwater monitoring within the Environmental program established by the Company

1997-01-01

287

Using SANs and NAS Help for Storage Administrators  

CERN Multimedia

Storage Area Networks (SANs) and Network Attached Storage (NAS) allow organizations to manage and back up huge file systems quickly. W. Curtis Preston's insightful book takes you through the ins and outs of building and managing large data centers using SANs and NAS. Whether you're a seasoned storage administrator or a network administrator charged with taking on this role, you'll find all the information you need to make informed architecture and data management decisions.

Preston, W

2009-01-01

288

SANS [small-angle neutron scattering] from polymers and colloids  

International Nuclear Information System (INIS)

Small-angle neutron scattering (SANS) has been remarkably successful in providing detailed quantitative structural information on complex everyday materials, such as polymers and colloids, which are often of considerable industrial as well as academic interest. This paper reviews some recent SANS experiments on polymers and colloids, including ferrofluids, and discusses the use of these apparently complex systems as general physical models of the liquid or solid state

1987-08-08

289

Romberg Tiburon Center for Environmental Studies (San Francisco State University)  

Science.gov (United States)

Located in Tiburon, California, the Romberg Tiburon Center is San Francisco State University's marine field station located 30 minutes north of San Francisco on the Tiburon Peninsula. The Center's mission is to perform basic scientific research and educate and train the next generation of scientists (undergraduate and Masters level). Site provides information on all the Center's latest news and research, as well as information on teacher workshops and outreach activities.

290

Geophysical properties within the San Andreas Fault Zone at the San Andreas Fault Observatory at Depth and their relationships to rock properties and fault zone structure  

Science.gov (United States)

We examine the relationships between borehole geophysical data and physical properties of fault-related rocks within the San Andreas Fault as determined from data from the San Andreas Fault Observatory at Depth borehole. Geophysical logs, cuttings data, and drilling data from the region 3- to 4-km measured depth of the borehole encompass the active part of the San Andreas Fault. The fault zone lies in a sequence of deformed sandstones, siltstone, shale, serpentinite-bearing block-in-matrix rocks, and sheared phyllitic siltstone. The borehole geophysical logs reveal the presence of a low-velocity zone from 3190 to 3410 m measured depth with Vp and Vs values 10-30% lower than the surrounding rocks and a 1-2 m thick zone of active shearing at 3301-3303 m measured depth. Seven low-velocity excursions with increased porosity, decreased density, and mud-gas kick signatures are present in the fault zone. Geologic data on grain-scale deformation and alteration are compared to borehole data and reveal weak correlations and inverse relationships to the geophysical data. In places, Vp and Vs increase with grain-scale deformation and alteration and decrease with porosity in the fault zone. The low-velocity zone is associated with a significant lithologic and structural transition to low-velocity rocks, dominated by phyllosilicates and penetratively foliated, sheared rocks. The zone of active shearing and the regions of low sonic velocity appear to be associated with clay-rich rocks that exhibit fine-scale foliation and higher porosities that may be a consequence of the fault-related shearing of foliated and fine-grained sedimentary rocks.

Jeppson, Tamara N.; Bradbury, Kelly K.; Evans, James P.

2010-12-01

291

Nondestructive testing of high-temperature alloys by small angle neutron scattering (SANS)  

International Nuclear Information System (INIS)

The suitability of the Small Angle Neutron Scattering (SANS) technique for the measurement of microstructural parameters of high-temperature alloys has been studied. The aim was the non-destructive determination of the creep damage for the estimation of the residual lifetime of service loaded gas turbine blades. In the first step the quantitative correlation between the SANS Signal and the microstructure of the material has been investigated using two oxide dispersion strengthened (ODS) alloys of simple microstructure. The size distributions of the dispersoid in the as-received alloy and the thermally induced growth of the dispersoid have been measured. Good agreement with results of transmission electron microscopy examinations was found. Subsequently the relationship between the SNS signal and the strain of a typical, creep loaded, ?'-strengthened Ni-base superalloy has been investigated. In a series of creep specimens made from the cast superalloy IN100, systematically increasing amounts of creep strain have been produced. With these specimens two parameters can be derived from the SANS scattering curve, each pair of values having a clear relationship with the creep strain. A hypothesis is discussed concerning the related scattering mechanism. (orig.)

1992-01-01

292

Reconnaissance of geothermal resources near US naval facilities in the San Diego area, California  

Energy Technology Data Exchange (ETDEWEB)

A reconnaissance study has found little evidence of potential geothermal resources useful at naval facilities in the greater San Diego metropolitan area. However, there is a zone of modest elevated water well temperatures and slightly elevated thermal gradients that may include the eastern portion of the Imperial Beach Naval Air Station south of San Diego Bay. An increase of 0.3/sup 0/ to 0.4/sup 0/F/100 ft over the regional thermal gradient of 1.56/sup 0/F/100 ft was conservatively calculated for this zone. The thermal gradient can be used to predict 150/sup 0/F temperatures at a depth of approximately 4000 ft. This zone of greatest potential for a viable geothermal resource lies within a negative gravity anomaly thought to be caused by a tensionally developed graben, approximately centered over the San Diego Bay. Water well production in this zone is good to high, with 300 gpm often quoted as common for wells in this area. The concentration of total dissolved solids (TDS) in the deeper wells in this zone is relatively high due to intrusion of sea water. Productive geothermal wells may have to be drilled to depths economically infeasible for development of the resource in the area of discussion.

Youngs, L.G.

1984-01-01

293

Pteridofitas indicadoras de alteración ambiental en el bosque templado de San Jerónimo Amanalco, Texcoco, México  

Scientific Electronic Library Online (English)

Full Text Available SciELO Costa Rica | Language: Spanish Abstract in spanish Pteridophytes that indicate environmental alteration in the temperate forest of San Jerónimo Amanalco, Texcoco, México. Pteridophytes that indicate environmental alteration in the San Jerónimo Amanalco temperate forest, Texcoco, Mexico. The patterns of distribution of 26 pteridophyte species were st [...] udied as possible indicators of environmental alteration in the temperate forest of San Jerónimo Amanalco, Texcoco, State of Mexico. The presence and abundance of the pteridoflora was studied in relation to edaphic, topographic and vegetation variables in 100 sampling locations within an area of 494 hectares. The relationship between these variables was studied using Canonical Correspondence Analysis. Five landscapes were recognized in the study zone according to the degree of deterioration: severe erosion, erosion, mountain with moderate reversible deterioration, mountain with no evident deterioration, and canyon with no evident deterioration. Cheilanthes bonariensis and Pellaea ternifolia are indicators of environmental degradation. The taxa that only grow in landscapes without apparent alteration are Adiantum andicola, Adiantum poiretii, Argyrochosma incana, Asplenium blepharophorum, Dryopteris pseudo filix-mas, Equisetum hyemale and Pteris cretica. Rev. Biol. Trop. 56 (2): 641-656. Epub 2008 June 30.

Rodríguez Romero, Lucía; Pacheco, Leticia; Zavala Hurtado, José Alejandro.

294

Pteridofitas indicadoras de alteración ambiental en el bosque templado de San Jerónimo Amanalco, Texcoco, México  

Directory of Open Access Journals (Sweden)

Full Text Available Pteridophytes that indicate environmental alteration in the temperate forest of San Jerónimo Amanalco, Texcoco, México. Pteridophytes that indicate environmental alteration in the San Jerónimo Amanalco temperate forest, Texcoco, Mexico. The patterns of distribution of 26 pteridophyte species were studied as possible indicators of environmental alteration in the temperate forest of San Jerónimo Amanalco, Texcoco, State of Mexico. The presence and abundance of the pteridoflora was studied in relation to edaphic, topographic and vegetation variables in 100 sampling locations within an area of 494 hectares. The relationship between these variables was studied using Canonical Correspondence Analysis. Five landscapes were recognized in the study zone according to the degree of deterioration: severe erosion, erosion, mountain with moderate reversible deterioration, mountain with no evident deterioration, and canyon with no evident deterioration. Cheilanthes bonariensis and Pellaea ternifolia are indicators of environmental degradation. The taxa that only grow in landscapes without apparent alteration are Adiantum andicola, Adiantum poiretii, Argyrochosma incana, Asplenium blepharophorum, Dryopteris pseudo filix-mas, Equisetum hyemale and Pteris cretica. Rev. Biol. Trop. 56 (2: 641-656. Epub 2008 June 30.

Lucía Rodríguez Romero

2008-06-01

295

Some factors regulating the striped bass population in the Sacramento--San Joaquin Estuary, California  

International Nuclear Information System (INIS)

The abundance of young and adult striped bass (Morone saxatilis) in the Sacramento--San Joaquin Estuary is related to the magnitudes of water diversions and of water flows in the estuary. Principal variations in survival occur during the first two months of life. Density-independent mortality caused by the loss of young bass in water diversions is a major factor regulating population size. Population size also is directly related to flow rates, which serve to control the transport of young bass to suitable nursery areas, which in turn influence survival through factors such as food availability

1977-05-02

296

Petrographic and geochemical aspects of metamorphic rocks of the sector Barranco de Loba (Serrania de San Lucas)  

International Nuclear Information System (INIS)

The metamorphic rocks that outcrop in the San Lucas foothills (in the area covered by the map identified as number 64), are grouped in two stratigraphic units: The so-called San Lucas Gneiss Formation and the Pinillos Metamorphic Unit (informal stratigraphic denomination). This latter unit is composed by The Armenia Schists and Tapoa Phyllites. The San Lucas Gneiss Formation, comprise quartz-feldspar gneisses (quartz-feldspar gneisses with biotite, quartz-feldspar gneisses with hornblende) and metamorphic rocks (hornblende gneiss, granulites and metagabbros). The Armenia Schists is composed by pelite schists; such as micaceous schists; micaceous schists with andalusite; and calco-silicate schists, quartz rich and with variable amounts of minerals from epidote, hornblende and actinolite groups. The Tapoa Phyllite Rocks are composed by quartz and sericite with altered opaque minerals. The San Lucas Gneiss Formation Metamorphism is regional and reaches the high anfibolite and pyroxene granulites facies. The 1.124Ma ± 22 zircon U-Pb age, indicates a Mesoproterozoic tectonothermal event, related to the Grenville Orogeny that took place during the Rodinia super continent consolidation. The Pinillos Metamorphic Rocks Unit is Early Paleozoic in age, according to the field relations.

2009-01-01

297

Chondrichthyans of the San Matías Gulf, Patagonia, Argentina Los condrictios del Golfo San Matías, Patagonia, Argentina  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The San Matías Gulf (SMG; 41°- 42° S; 64°- 65° W) is the largest gulf in Northern Patagonia, Argentina. Up to date, the chondrichthyan fauna of this area has not been reported. Therefore, the aim of this work is to provide a list with species presence and biological characteristics of the chondrichthyans recorded in SMG during the last 30 years. A total of 13 sharks distributed in 11 families, 19 skates and rays distributed in six families, and one holocephalan have been so far recorded ...

Perier, Mari?a R.; Estalles, Marilu?; Coller, Nidia M.; Suarez, Mati?as N.; Mora, Gimena J.; Di Gia?como, Edgardo E.

2011-01-01

298

Procesos históricos y ambientales en Cerro de San Pedro, San Luis Potosí, México, 1948-1997  

Directory of Open Access Journals (Sweden)

Full Text Available Los estudios sobre el municipio Cerro de San Pedro enfatizan la continuidad ambiental aparente que estimula la minería; sin embargo, esta lectura subvalora otras dinámicas que ocurren en la zona. Con base en observaciones directas de trabajo en campo, para realizar análisis de coberturas vegetales, entrevistas con los habitantes de la zona, revisión de cartografía e investigación de archivo, el presente trabajo muestra procesos como la explotación de recursos vegetales y el pastoreo, como actividades económicas paralelas a las labores mineras, y que no habían sido tratados hasta ahora.

Paula Andrea Martínez Chaves

2010-01-01

299

"Gredos San Diego Cooperativa. Cooperar para emprender" (Gredos San Diego Cooperative. Cooperate to undertake  

Directory of Open Access Journals (Sweden)

Full Text Available This paper analyzes the cooperative experience through Gredos San Diego model, its institutional approaches and its history from the point of view of management, focusing on the variables that enable the success of a collective ownership institution. First, the author makes a brief analysis of the principles that guide the cooperative, its origins and its current situation, including the development of GSD Cooperative Group. It continues exploring the evolution of management, dividing it into four distinct stages, and concludes with a summary with the findings of the previous president of the cooperative.

Carlos de la Higuera

2012-01-01

300

Determinación de ciclosporina sanguínea realizada en el Hospital San Juan de Dios, San José, Costa Rica  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Se determinó los niveles sanguíneos de ciclosporina y metabolitos (método de inmunoensayo de polarización de fluorescencia TDx, Abbott) y ciclosporina (método de inmunoensayo de polarización de fluorescencia AxSyM, Abbott) en 86 pacientes transplantados de riñón del Hospital San Juan de Dios. Los resultados fueron en promedio 3,26 veces mayores con el método de TDx que con el de AxSyM (amplitud=1,02-6,01, S.D.=0,99). Esto se puede atribuir a la reactividad cruzada del antisuero del T...

2001-01-01

 
 
 
 
301

Water-balance and groundwater-flow estimation for an arid environment: San Diego region, California  

Directory of Open Access Journals (Sweden)

Full Text Available The coastal-plain aquifer that underlies the San Diego City metropolitan area in southern California is a groundwater resource. The understanding of the region-wide water balance and the recharge of water from the high elevation mountains to the east needs to be improved to quantify the subsurface inflows to the coastal plain in order to develop the groundwater as a long term resource. This study is intended to enhance the conceptual understanding of the water balance and related recharge processes in this arid environment by developing a regional model of the San Diego region and all watersheds adjacent or draining to the coastal plain, including the Tijuana River basin. This model was used to quantify the various components of the water balance, including semi-quantitative estimates of subsurface groundwater flow to the coastal plain. Other approaches relying on independent data were used to test or constrain the scoping estimates of recharge and runoff, including a reconnaissance-level groundwater model of the San Diego River basin, one of three main rivers draining to the coastal plain. Estimates of subsurface flow delivered to the coastal plain from the river basins ranged from 12.3 to 28.8 million m3 yr?1 from the San Diego River basin for the calibration period (1982–2009 to 48.8 million m3 yr?1 from all major river basins for the entire coastal plain for the long-term period 1940–2009. This range of scoping estimates represents the impact of climatic variability and realistically bounds the likely groundwater availability, while falling well within the variable estimates of regional recharge. However, the scarcity of physical and hydrologic data in this region hinders the exercise to narrow the range and reduce the uncertainty.

L. E. Flint

2012-03-01

302

Migrating tremors illuminate complex deformation beneath the seismogenic San Andreas fault.  

Science.gov (United States)

The San Andreas fault is one of the most extensively studied faults in the world, yet its physical character and deformation mode beneath the relatively shallow earthquake-generating portion remain largely unconstrained. Tectonic 'non-volcanic' tremor, a recently discovered seismic signal probably generated by shear slip on the deep extension of some major faults, can provide new insight into the deep fate of such faults, including that of the San Andreas fault near Parkfield, California. Here I examine continuous seismic data from mid-2001 to 2008, identifying tremor and decomposing the signal into different families of activity based on the shape and timing of the waveforms at multiple stations. This approach allows differentiation between activities from nearby patches of the deep fault and begins to unveil rich and complex patterns of tremor occurrence. I find that tremor exhibits nearly continuous migration, with the most extensive episodes propagating more than 20 kilometres along fault strike at rates of 15-80 kilometres per hour. This suggests that the San Andreas fault remains a localized through-going structure, at least to the base of the crust, in this area. Tremor rates and recurrence behaviour changed markedly in the wake of the 2004 magnitude-6.0 Parkfield earthquake, but these changes were far from uniform within the tremor zone, probably reflecting heterogeneous fault properties and static and dynamic stresses decaying away from the rupture. The systematic recurrence of tremor demonstrated here suggests the potential to monitor detailed time-varying deformation on this portion of the deep San Andreas fault, deformation which unsteadily loads the shallower zone that last ruptured in the 1857 magnitude-7.9 Fort Tejon earthquake. PMID:20130648

Shelly, David R

2010-02-01

303

Interpretations about emphyteutic census redemption in Guatemala in late Nineteenth Century. The cases of Antigua Guatemala, San Felipe and San Mateo Milpas Altas Interpretaciones sobre la redención de censos enfitéuticos en Guatemala a finales del siglo XIX. Los casos de Antigua Guatemala, San Felipe y San Mateo Milpas Altas  

Directory of Open Access Journals (Sweden)

Full Text Available This article analyses the interpretation that three city councils from the Department of Sacatepéquez, Guatemala (Antigua Guatemala, San Felipe and San Mateo Milpas Altas made of the emphyteutic census redemption decree from 1877. The objective is to demonstrate that the signification of private property was related to the community-authority relationship and the social cohesion derived from it, which gives the opportunity to question the historiographical hypothesis that underline that indigenous city councils were impoverished and their land stripped during the Liberal Regime. To accomplish this there are traced to analysis ways, the first one is about community and the second one is drawn through collective action and institutionalism. Finally, it can be seen that the non-indigenous city council, Antigua Guatemala, was impoverished sooner, while the other two maintained their social dynamic and the money flow even when their lands were privatize.En este artículo se analiza la manera en la que tres ayuntamientos del Departamento de Sacatepéquez, Guatemala (Antigua Guatemala, San Felipe y San Mateo Milpas Altas interpretaron el decreto de redención de censos enfitéuticos de 1877. El objetivo es demostrar que la significación de la propiedad privada estaba vinculada a la relación comunidad-autoridad y a la cohesión social que se generó a partir de la misma, con lo cual se cuestiona la hipótesis historiográfica de que los ayuntamientos indígenas fueron pauperizados y despojados de sus tierras en el Régimen Liberal. Se hace a través de dos vías de análisis: la primera en términos de lo comunitario y la segunda a través de la acción colectiva y el institucionalismo. Finalmente, se logra ver que fue el ayuntamiento no indígena, Antigua Guatemala, el que más rápidamente se pauperizó, mientras los otros dos lograron mantener la dinámica social y el flujo de ingresos aun cuando privatizaron sus tierras.

Aquiles Omar Ávila Quijas

2012-01-01

304

Quaternary Geochronology, Paleontology, and Archaeology of the Upper San Pedro River Valley, Sonora, Mexico  

Science.gov (United States)

This poster presents the results of multi-disciplinary investigations of the preservation and extent of Quaternary fossil-bearing strata in the San Pedro River Valley in Sonora, Mexico. Geologic deposits in the portions of the San Pedro Valley in southern Arizona contain one of the best late Cenozoic fossil records known in North America and the best record of early humans and extinct mammals on the continent. The basin in the U.S. is one of the type locations for the Blancan Land Mammal Age. Hemiphilian and Irvingtonian fossils are common. Rancholabrean remains are widespread. Strata in the valley adjacent to the international border with Mexico have yielded the densest concentration of archaeological mammoth-kill sites known in the western hemisphere. Despite more than 60 years of research in the U.S., however, and the fact that over one third of the San Pedro River lies south of the international boundary, little has been known about the late Cenozoic geology of the valley in Mexico. The study reported here utilized extensive field survey, archaeological documentation, paleontological excavations, stratigraphic mapping and alluvial geochronology to determine the nature and extent of Quaternary fossil-bearing deposits in the portions of the San Pedro Valley in Sonora, Mexico. The results demonstrate that the Plio-Pleistocene fossil -bearing formations known from the valley in Arizona extend into the uppermost reaches of the valley in Mexico. Several new fossil sites were discovered that yielded the remains of Camelids, Equus, Mammuthus, and other Proboscidean species. Late Pleistocene archaeological remains were found on the surface of the surrounding uplands. AMS radiocarbon dating demonstrates the widespread preservation of middle- to late- Holocene deposits. However, the late Pleistocene deposits that contain the archaeological mammoth-kill sites in Arizona are absent in the valley in Mexico, and are now known to be restricted to relatively small portions of the valley immediately north of the international border.

Gaines, E. P.

2013-12-01

305

Investigation of the San Gabriel Fault in the Vicinity of Pyramid and Castaic Dams, Los Angeles County, California: Geologic and Seismologic Constraints from Existing  

Science.gov (United States)

Pyramid and Castaic Dams are in an active transpressional deformation zone between the San Gabriel and San Andreas faults. The San Gabriel fault is ~3 km west of both dams, and is an ~80-km long structure. The fault plane geometry exerts a strong control on the calculated ground motion at the dam sites. Geologic studies have characterized the fault activity, geometry, and sense of displacement along the southern San Gabriel fault sections, (i.e., Honor Rancho, Newhall sections), whereas there is more uncertainty along the northern San Gabriel fault section (i.e., Palomas section). In particular, the dip direction and angle of the Palomas section at seismogenic depths are poorly constrained. Existing parameterizations of the Palomas section of the San Gabriel fault geometry range from near vertical orientation with strike-slip displacement to about 60 degree northeast dip with reverse displacement. To better assess the geometry of the San Gabriel fault at seismogenic depths (>5 km), we analyzed existing published oil well logs, available seismicity data, geologic maps, and current fault mapping. Spatial analysis of the seismicity data showed diffuse hypocentral trends that defied discrete fault plane identification. Analyses of focal mechanism solutions indicate fault strike directions in the west-northwest directions, discordant with the strike of the San Gabriel fault near Pyramid Dam. The focal mechanisms better indicate slip transfer to splay structures such as the Holser, Del Valle, and Santa Susana faults that sole into the active San Cayetano fault system to the west. Existing data do not provide sufficient information to refute an easterly dipping San Gabriel fault plane, nor do the data preclude a vertical to near-vertical orientation of the fault near Pyramid Dam. Based on apparent non-deformation of the Pliocene Hungry Valley Formation, the Palomas section of the fault has been proposed as inactive. This study identifies apparent undeformed Quaternary pediment surfaces overlying the mapped San Gabriel fault trace in the vicinity of Pyramid Lake, and an absence of fault-related geomorphic features along strike, consistent with inactivity. Alternatively, the slip rates along this part of the fault simply may be very low (e.g., fault in the vicinity of Pyramid Lake will provide significant improvements to the understanding of the seismic hazard in this area.

Pearce, J. T.; Turner, J. P.; O'Connell, D. R.; Hoirup, D. F.; Barry, G.; Glick, F.

2012-12-01

306

SANS study of cellulose extracted from switchgrass.  

Science.gov (United States)

Lignocellulosic biomass, which is an abundant renewable natural resource, has the potential to play a major role in the generation of renewable biofuels through its conversion to bioethanol. Unfortunately, it is a complex biological composite material that shows significant recalcitrance, making it a cost-ineffective feedstock for bioethanol production. Small-angle neutron scattering (SANS) was employed to probe the multi-scale structure of cellulosic materials. Cellulose was extracted from milled native switchgrass and from switchgrass that had undergone a dilute acid pretreatment method in order to disrupt the lignocellulose structure. The high-Q structural feature (Q > 0.07 Å(-1)) can be assigned to cellulose fibrils based on a comparison of cellulose purified by solvent extraction of native and dilute acid pretreated switchgrass and a commercial preparation of microcrystalline cellulose. Dilute acid pretreatment results in an increase in the smallest structural size, a decrease in the interconnectivity of the fibrils and no change in the smooth domain boundaries at length scales larger than 1000 Å. PMID:21041935

Pingali, Sai Venkatesh; Urban, Volker S; Heller, William T; McGaughey, Joseph; O'Neill, Hugh M; Foston, Marcus; Myles, Dean A; Ragauskas, Arthur J; Evans, Barbara R

2010-11-01

307

SANS Study of Cellulose Extracted from Switchgrass  

Energy Technology Data Exchange (ETDEWEB)

AbstractLignocellulosic biomass, an abundant renewable natural resource, has the potential to play a major role in generation of renewable biofuels through its conversion to bio-ethanol. Unfortunately, it is a complex biological composite material that shows significant recalcitrance making it a cost-ineffective feedstock for bioethanol production. Small-angle neutron scattering (SANS) was employed to probe the multi-scale structure of cellulosic materials. Cellulose was extracted from milled native switchgrass and switchgrass that had undergone the dilute acid pretreatment method to disrupt the lignocellulose structure. The high-Q structural feature (Q > 0.07 -1) can be assigned to cellulose fibrils based on comparison with the switchgrass purified by solvent extraction of native and dilute acid pretreated and a commercial preparation of microcrystalline cellulose. Dilute acid pretreatment results in an increase in the smallest structural size, a decrease in the interconnectivity of the fibrils; and no change in the smooth domain boundaries at length scales larger than 1000 .

Pingali, Sai Venkatesh [ORNL; Urban, Volker S [ORNL; Heller, William T [ORNL; McGaughey, Joseph [ORNL; O' Neill, Hugh Michael [ORNL; Foston, Marcus B [ORNL; Myles, Dean A A [ORNL; Ragauskas, Arthur J [ORNL; Evans, Barbara R [ORNL

2010-01-01

308

The radiological accident in San Salvador  

International Nuclear Information System (INIS)

In February 1989 a radiological accident occurred in San Salvador at an industrial irradiation facility for sterilizing prepackaged medical products. A movable rack holding a 660 TBq (18 kCi) 60Co source jammed in the exposed position. The operator managed to bypass degraded safety systems and enter the irradiation chamber and, with two helpers, free the rack and lower it manually into the storage pool. The three workers were exposed to very high doses and developed acute radiation syndrome. Initial treatment locally and subsequent more sophisticated treatment in Mexico City was effective in countering the acute effects. However, the legs and feet of two men were so seriously injured that amputation was necessary. Moreover, despite the medical efforts, the most exposed worker died six months after the accident from radiation induced lung damage complicated by a lung injury sustained during treatment. As there are more than 160 industrial irradiation facilities throughout the world, some in countries with little or no infrastructure for radiological protection, an international review was undertaken to document the facts and define lessons for all with safety responsibilities at such facilities. The paper provides a brief summary of the findings of that review. (author). 1 ref., 3 figs

1989-11-06

309

Mercury in San Francisco Bay forage fish  

International Nuclear Information System (INIS)

In the San Francisco Estuary, management actions including tidal marsh restoration could change fish mercury (Hg) concentrations. From 2005 to 2007, small forage fish were collected and analyzed to identify spatial and interannual variation in biotic methylmercury (MeHg) exposure. The average whole body total Hg concentration was 0.052 ?g g-1 (wet-weight) for 457 composite samples representing 13 fish species. MeHg constituted 94% of total Hg. At a given length, Hg concentrations were higher in nearshore mudflat and wetland species (Clevelandia ios, Menidia audens, and Ilypnus gilberti), compared to species that move offshore (e.g., Atherinops affinis and Lepidogobius lepidus). Gut content analysis indicated similar diets between Atherinops affinis and Menidia audens, when sampled at the same locations. Hg concentrations were higher in sites closest to the Guadalupe River, which drains a watershed impacted by historic Hg mining. Results demonstrate that despite differences among years and fish species, nearshore forage fish exhibit consistent Hg spatial gradients. - Total mercury in estuarine forage fish varies with species, habitat, and proximity to a historic mercury mine.

2010-08-01

310

Mercury in San Francisco Bay forage fish.  

Science.gov (United States)

In the San Francisco Estuary, management actions including tidal marsh restoration could change fish mercury (Hg) concentrations. From 2005 to 2007, small forage fish were collected and analyzed to identify spatial and interannual variation in biotic methylmercury (MeHg) exposure. The average whole body total Hg concentration was 0.052 microg g(-1) (wet-weight) for 457 composite samples representing 13 fish species. MeHg constituted 94% of total Hg. At a given length, Hg concentrations were higher in nearshore mudflat and wetland species (Clevelandia ios, Menidia audens, and Ilypnus gilberti), compared to species that move offshore (e.g., Atherinops affinis and Lepidogobius lepidus). Gut content analysis indicated similar diets between Atherinops affinis and Menidia audens, when sampled at the same locations. Hg concentrations were higher in sites closest to the Guadalupe River, which drains a watershed impacted by historic Hg mining. Results demonstrate that despite differences among years and fish species, nearshore forage fish exhibit consistent Hg spatial gradients. PMID:20537451

Greenfield, Ben K; Jahn, Andrew

2010-08-01

311

Mercury in San Francisco Bay forage fish  

Energy Technology Data Exchange (ETDEWEB)

In the San Francisco Estuary, management actions including tidal marsh restoration could change fish mercury (Hg) concentrations. From 2005 to 2007, small forage fish were collected and analyzed to identify spatial and interannual variation in biotic methylmercury (MeHg) exposure. The average whole body total Hg concentration was 0.052 {mu}g g{sup -1} (wet-weight) for 457 composite samples representing 13 fish species. MeHg constituted 94% of total Hg. At a given length, Hg concentrations were higher in nearshore mudflat and wetland species (Clevelandia ios, Menidia audens, and Ilypnus gilberti), compared to species that move offshore (e.g., Atherinops affinis and Lepidogobius lepidus). Gut content analysis indicated similar diets between Atherinops affinis and Menidia audens, when sampled at the same locations. Hg concentrations were higher in sites closest to the Guadalupe River, which drains a watershed impacted by historic Hg mining. Results demonstrate that despite differences among years and fish species, nearshore forage fish exhibit consistent Hg spatial gradients. - Total mercury in estuarine forage fish varies with species, habitat, and proximity to a historic mercury mine.

Greenfield, Ben K., E-mail: ben@sfei.or [San Francisco Estuary Institute, 7770 Pardee Lane, Oakland, CA 94621 (United States); Jahn, Andrew, E-mail: andyjahn@mac.co [1000 Riverside Drive, Ukiah, CA 95482 (United States)

2010-08-15

312

Anatomía vegetal en San Alberto Magno  

Directory of Open Access Journals (Sweden)

Full Text Available Since T. A. Sprague wrote his outstanding essays many years ago on the meaning of botanical terms used by Plinius, Isidorus, Albertus and Ruellius, no one else had resumed this task, which is essential for the history of botany. Though Albertus explained vegetal structure in terms of the function it fulfils, the methodology used here ignores Physiology and concentrates on Morphology. After discussing the composition of De Vegetabilibus, we deal with organs using the order and division established by Albertus: succus, nodus, radix. venae, stipes, ramus, cortex, flos, folium, fructus, and so on.

Desde los ya lejanos, y meritísimos, trabajos de T. A. Sprague sobre el significado de los términos botánicos empleados por Plinio, Isidoro, Alberto y Ruellius, nadie había reemprendido tan necesaria tarea para la historia de la botánica. Aunque la razón de una estructura vegetal se explica, en San Alberto, por la función que cumple, aquí prescindimos metodológicamente de la fisiología para ceñirnos a la morfología. Tras exponer la composición del De Vegetabilibus, abordamos los distintos órganos de la planta según el orden y la división trazados por él: succus, nodus, radix, venae, stipes, ramus, cortex, flos, fructus, etcétera.

Valderas, José María

1988-01-01

313

Indoor Air Quality Assessment of the San Francisco Federal Building  

Energy Technology Data Exchange (ETDEWEB)

An assessment of the indoor air quality (IAQ) of the San Francisco Federal Building (SFFB) was conducted on May 12 and 14, 2009 at the request of the General Services Administration (GSA). The purpose of the assessment was for a general screening of IAQ parameters typically indicative of well functioning building systems. One naturally ventilated space and one mechanically ventilated space were studied. In both zones, the levels of indoor air contaminants, including CO2, CO, particulate matter, volatile organic compounds, and aldehydes, were low, relative to reference exposure levels and air quality standards for comparable office buildings. We found slightly elevated levels of volatile organic compounds (VOCs) including two compounds often found in"green" cleaning products. In addition, we found two industrial solvents at levels higher than typically seen in office buildings, but the levels were not sufficient to be of a health concern. The ventilation rates in the two study spaces were high by any standard. Ventilation rates in the building should be further investigated and adjusted to be in line with the building design. Based on our measurements, we conclude that the IAQ is satisfactory in the zone we tested, but IAQ may need to be re-checked after the ventilation rates have been lowered.

Apte, Michael; Bennett, Deborah H.; Faulkner, David; Maddalena, Randy L.; Russell, Marion L.; Spears, Michael; Sullivan, Douglas P; Trout, Amber L.

2008-07-01

314

Ecology of San Francisco Bay tidal marshes: a community profile  

Energy Technology Data Exchange (ETDEWEB)

San Francisco Bay, the largest estuary on the Pacific coast, historically contained an extensive contiguous system of salt and brackish tidal marshes. Urbanization has decreased tidal marshes by 95% and created a patchwork of remnant tidal marshes highly impacted by human activity. This document compiles available published and unpublished scientific literature to describe the current status and ecology of these remaining marshes. Variation in river inflow (strongly seasonal) and individual species salinity tolerances result in gradual and overlapping distributional ranges. Saline marshes are usually dominated by two halophytes: Pacific cordgrass and pickleweed and brackish marshes by bulrushes: Scirpus spp and cattails. Animals are distributed in relation to their salinity tolerances, vegetational habitat requirements, and tidal elevation within the marsh. Distribution of native species is complicated by competitive interactions and frequent dominance by introduced species. Preservation of remaining marshes requires careful management. Habitat requirements for selected species can be incorporated into management practices as well as carefully planned and executed restoration projects. 211 references, 45 figures, 29 tables.

Josselyn, M.

1983-10-01

315

Serum and saliva sex hormone levels in !Kung San men.  

Science.gov (United States)

Serum concentrations of testosterone (Tser), 5 alpha-dihydrotestosterone (DHT), estradiol 17 beta (E2), and free testosterone in saliva (Tsal) were determined by means of the radioimmunoassay method in 114 !Kung San men living in the Bushmanland district of Namibia. The healthy men (mean age 26.4 years) were asked about their dietary habits over the last two months and their acute alcohol intake during the 24 hours preceding the blood and saliva sampling. Although the sex hormone status of the !Kung lies within the range of normal men reported for Caucasoid samples, both Tser and Tsal exhibit relatively low concentrations in comparison to the great majority of published mean values. On the other hand, comparatively high DHT levels point to an elevated 5 alpha-reduction of testosterone to DHT in our sample. Estradiol concentrations show no deviation from normal values reported elsewhere for healthy young men. Different dietary habits of the !Kung lead to significant differences in their sex hormone status: both levels of Tsal and the androgen ratio Tsal/Tser decrease with increasing supplement of the traditional hunter-gatherer diet with domestic and Western food products. The amount of alcohol consumed during the day before the blood and saliva sampling shows a significant effect on the DHT metabolism, and the shorter the time after drinking, the greater decrease of DHT and DHT/E2 can be observed. PMID:1951659

Christiansen, K H

1991-09-01

316

Fracture surface energy of the Punchbowl fault, San Andreas system.  

Science.gov (United States)

Fracture energy is a form of latent heat required to create an earthquake rupture surface and is related to parameters governing rupture propagation and processes of slip weakening. Fracture energy has been estimated from seismological and experimental rock deformation data, yet its magnitude, mechanisms of rupture surface formation and processes leading to slip weakening are not well defined. Here we quantify structural observations of the Punchbowl fault, a large-displacement exhumed fault in the San Andreas fault system, and show that the energy required to create the fracture surface area in the fault is about 300 times greater than seismological estimates would predict for a single large earthquake. If fracture energy is attributed entirely to the production of fracture surfaces, then all of the fracture surface area in the Punchbowl fault could have been produced by earthquake displacements totalling <1 km. But this would only account for a small fraction of the total energy budget, and therefore additional processes probably contributed to slip weakening during earthquake rupture. PMID:16136142

Chester, Judith S; Chester, Frederick M; Kronenberg, Andreas K

2005-09-01

317

Emissions of organic carbon and methane from petroleum and dairy operations in California's San Joaquin Valley  

Science.gov (United States)

Petroleum and dairy operations are prominent sources of gas-phase organic compounds in California's San Joaquin Valley. It is essential to understand the emissions and air quality impacts of these relatively understudied sources, especially for oil/gas operations in light of increasing US production. Ground site measurements in Bakersfield and regional aircraft measurements of reactive gas-phase organic compounds and methane were part of the CalNex (California Research at the Nexus of Air Quality and Climate Change) project to determine the sources contributing to regional gas-phase organic carbon emissions. Using a combination of near-source and downwind data, we assess the composition and magnitude of emissions, and provide average source profiles. To examine the spatial distribution of emissions in the San Joaquin Valley, we developed a statistical modeling method using ground-based data and the FLEXPART-WRF transport and meteorological model. We present evidence for large sources of paraffinic hydrocarbons from petroleum operations and oxygenated compounds from dairy (and other cattle) operations. In addition to the small straight-chain alkanes typically associated with petroleum operations, we observed a wide range of branched and cyclic alkanes, most of which have limited previous in situ measurements or characterization in petroleum operation emissions. Observed dairy emissions were dominated by ethanol, methanol, acetic acid, and methane. Dairy operations were responsible for the vast majority of methane emissions in the San Joaquin Valley; observations of methane were well correlated with non-vehicular ethanol, and multiple assessments of the spatial distribution of emissions in the San Joaquin Valley highlight the dominance of dairy operations for methane emissions. The petroleum operations source profile was developed using the composition of non-methane hydrocarbons in unrefined natural gas associated with crude oil. The observed source profile is consistent with fugitive emissions of condensate during storage or processing of associated gas following extraction and methane separation. Aircraft observations of concentration hotspots near oil wells and dairies are consistent with the statistical source footprint determined via our FLEXPART-WRF-based modeling method and ground-based data. We quantitatively compared our observations at Bakersfield to the California Air Resources Board emission inventory and find consistency for relative emission rates of reactive organic gases between the aforementioned sources and motor vehicles in the region. We estimate that petroleum and dairy operations each comprised 22% of anthropogenic non-methane organic carbon at Bakersfield and were each responsible for 8-13% of potential precursors to ozone. Yet, their direct impacts as potential secondary organic aerosol (SOA) precursors were estimated to be minor for the source profiles observed in the San Joaquin Valley.

Gentner, D. R.; Ford, T. B.; Guha, A.; Boulanger, K.; Brioude, J.; Angevine, W. M.; de Gouw, J. A.; Warneke, C.; Gilman, J. B.; Ryerson, T. B.; Peischl, J.; Meinardi, S.; Blake, D. R.; Atlas, E.; Lonneman, W. A.; Kleindienst, T. E.; Beaver, M. R.; St. Clair, J. M.; Wennberg, P. O.; VandenBoer, T. C.; Markovic, M. Z.; Murphy, J. G.; Harley, R. A.; Goldstein, A. H.

2014-05-01

318

Cianobacterias del embalse San Roque (Córdoba, Argentina) / Cyanobacteria of the San Roque reservoir (Córdoba, Argentina)  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish Este trabajo es una contribución al conocimiento de las cianobacterias presentes en el embalse San Roque y forma parte de un estudio integral de la flora algal del mencionado embalse. Se citan 24 taxa correspondientes a los Ordenes Chroococcales (11), Nostocales (8) y Oscillatoriales (5). Synechocys [...] tis aquatilis, Gloeocapsa rupestris, Gomphosphaeria aponina, Chamaesiphon incrustans f. incrustans, Scytonema crispum, Tolypothrix distorta, Gloeotrichia pisum, Calothrix fusca, Trichodesmium lacustre, Geitlerinema splendidum, Lyngbya aestuarii y Borzia trilocularis son nuevas citas para la zona de estudio. Abstract in english This work is a contribution to the knowledge of the Cyanobacteria present in the San Roque reservoir and forms a part of an integral study of its algal flora. Twenty-four taxa are described and ilustrated: 11 Chroococcales, 8 Nostocales, and 5 Oscillatoriales. Synechocystis aquatilis, Gloeocapsa rup [...] estris, Gomphosphaeria aponina, Chamaesiphon incrustans f. incrustans, Scytonema crispum, Tolypothrix distorta, Gloeotrichia pisum, Calothrix fusca, Trichodesmium lacustre, Geitlerinema splendidum, Lyngbya aestuarii and Borzia trilocularis.

Daga, Inés Claudia; Pierotto, Marcelo Javier.

319

Procesos históricos y ambientales en Cerro de San Pedro, San Luis Potosí, México, 1948-1997  

Scientific Electronic Library Online (English)

Full Text Available SciELO Mexico | Language: Spanish Abstract in spanish Los estudios sobre el municipio Cerro de San Pedro enfatizan la continuidad ambiental aparente que estimula la minería; sin embargo, esta lectura subvalora otras dinámicas que ocurren en la zona. Con base en observaciones directas de trabajo en campo, para realizar análisis de coberturas vegetales, [...] entrevistas con los habitantes de la zona, revisión de cartografía e investigación de archivo, el presente trabajo muestra procesos como la explotación de recursos vegetales y el pastoreo, como actividades económicas paralelas a las labores mineras, y que no habían sido tratados hasta ahora. Abstract in english Studies on the Cerro de San Pedro municipality emphasize the apparent environmental continuity encouraged by mining activity; however, this perception undervalues other dynamics that take place in the region. This article illustrates processes not considered heretofore, such as the exploitation of v [...] egetable resources and pasturing as economic activities parallel to mining. The information is based on field observations, analysis of vegetable covers, interviews with the inhabitants of the region, revision of cartography and archived work.

Paula Andrea, Martínez Chaves; Alexander, Betancourt Mendieta; Miguel, Nicolás Caretta; Miguel, Aguilar Robledo.

320

Imagen y memoria de la transformación urbana de San Victorino Image and memory in San Victorino  

Directory of Open Access Journals (Sweden)

Full Text Available A partir del análisis de las transformaciones físicas y funcionales del sector de San Victorino en el centro de Bogotá, la autora estudia las dinámicas que han intervenido en la construcción y configuración del lugar, el cual ha sido escogido por el rol que ha ejercido en el desarrollo de la ciudad. El objetivo del artículo es determinar de qué manera el urbanismo, quizá como ciencia, interviene, recualifica o potencia espacios que han sufrido procesos de deterioro, pero que son susceptibles de transformarse en lugares de permanencia. Este artículo es un resumen del último capítulo de la tesis de Maestría en Urbanismo que la autora sustentó en 2006, y por la cual ha recibido una Mención Meritoria.From the analysis of the physical and functional transformations of San victorino’s sector in Bogotá’s centre, the author studies the dynamics which have taken part in the construction and configuration of the place, which has been chosen by the roll that has exerted in the development of the city. The objective of the article is to determine how urbanism, perhaps as science, takes part, re qualifies or powers spaces that have undergone deterioration processes, although they are susceptible to transform themselves into permanence places. This article is a summary of the last chapter of the thesis of masters in urbanism that the author presented in 2006, reason why she has received a commendable mention.

Sabogal Bernal Sandra Jinneth

2011-01-01

 
 
 
 
321

Geologic report on the San Rafael Swell Drilling Project, San Rafael Swell, Utah  

International Nuclear Information System (INIS)

Twenty-two holes totaling 34,874 feet (10,629.6 meters) were rotary and core drilled on the northern and western flanks of the San Rafael Swell to test fluvial-lacustrine sequences of the Morrison Formation and the lower part of the Chinle Formation. The objective of the project was to obtain subsurface data so that improved uranium resource estimates could be determined for the area. Although the Brushy Basin and the Salt Wash Members of the Morrison Formation are not considered favorable in this area for the occurrence of significant uranium deposits, uranium minerals were encountered in several of the holes. Some spotty or very low-grade mineralization was also encountered in the White Star Trunk area. The lower part of the Chinle Formation is considered to be favorable for potentially significant uranium deposits along the west flank of the San Rafael Swell. One hole (SR-202) east of Ferron, Utah, intersected uranium, silver, molybdenum, and copper mineralization. More exploratory drilling in the vicinity of this hole is recommended. As a result of the study of many geochemical analyses and a careful determination of the lithology shown by drilling, a sabkha environment is suggested for the concentration of uranium, zinc, iron, lead, copper, silver, and perhaps other elements in parts of the Moody Canyon Member of the Moenkopi Formation

1981-01-01

322

La política en San Francisco Oxtotilpan / Politics in San Francisco Oxtotilpan  

Scientific Electronic Library Online (English)

Full Text Available SciELO Mexico | Language: Spanish Abstract in spanish El siguiente texto analiza el proceso político en San Francisco Oxtotilpan, una comunidad indígena en el Estado de México. Para tal caso, se presenta una breve descripción etnográfica de la comunidad, con los rasgos sociales y culturales más importantes seguida por el examen al sistema de cargos rel [...] igiosos de esta comunidad y su relevancia para el proceso político de la misma, ya que una de las principales diferencias entre la política en el mundo indígena y el mundo mestizo es la intervención de una cosmología religiosa en el proceso político. Abstract in english The following text analyzes the political process in San Francisco Oxtotilpan, an Indian community in the State of Mexico. To this effect, it presents a brief ethnographic description of the community, with its social and the most important cultural characteristics followed by an examination of the [...] system for religious appointments and its relevance to the political process of the community, since one of the principle differences between politics in the Indian world and the cross breed is the intervention of a religious cosmology in the political process.

Leif, Korsbaeck.

323

Tidal saltmarsh fragmentation and persistence of San Pablo Song Sparrows (Melospiza melodia samuelis): Assessing benefits of wetland restoration in San Francisco Bay  

Science.gov (United States)

The San Pablo Song Sparrow (Melospiza melodia samuelis) is one of three morphologically distinct Song Sparrow subspecies in tidal marshes of the San Francisco Bay estuary. These subspecies are rare, because as the human population has grown, diking and development have resulted in loss of 79% of the historic tidal marshes. Hundreds of projects have been proposed in the past decade to restore tidal marshes and benefit endemic populations. To evaluate the value of these restoration projects for Song Sparrows, we developed a population viability analysis (PVA) model to examine persistence of samuelis subspecies in relation to parcel size, connectivity, and catastrophe in San Pablo Bay. A total of 101 wetland parcels were identified from coverages of modern and historic tidal marshes. Parcels were grouped into eight fragments in the historical landscape and 10 in the present landscape. Fragments were defined as a group of parcels separated by >1 km, a distance that precluded regular interchange. Simulations indicated that the historic (circa 1850) samuelis population was three times larger than the modern population. However, only very high levels (>70% mortality) of catastrophe would threaten their persistence. Persistence of populations was sensitive to parcel size at a carrying capacity of <10 pairs, but connectivity of parcels was found to have little importance because habitats were dominated by a few large parcels. Our analysis indicates little risk of extinction of the samuelis subspecies with the current extent of tidal marshes, but the vulnerability of the small-est parcels suggests that restoration should create larger continuous tracts. Thus, PVA models may be useful tools for balancing the costs and benefits of restoring habitats for threatened tidal-marsh populations in wetland restoration planning.

Takekawa, J. Y.; Sacks, B. N.; Woo, I.; Johnson, M. L.; Wylie, G. D.

2006-01-01

324

Linear electrical circuits. Coupled systems; Circuits electriques lineaires. Systemes boucles  

Energy Technology Data Exchange (ETDEWEB)

Among the methods of study of electronic systems, the fluence diagrams are of particular interest as they allow a fruitful synthetic analysis of electrical circuits. They represent a good method for the study of coupled or reaction systems which is of prime importance in electronic engineering where any structure is submitted to feedback. This article presents: 1 - fluence diagrams: general principles, definitions, fluence diagram of a physical system, reduction of a fluence diagram, Mason rule, application of fluence diagrams: synthesis of a filter; 2 - feedback systems: basic equation and diagram of reaction, determination of diagram transmittances, feedback difference - transmittance in open-loop, sensibility to parameter variations, influence of feedback on harmonic distortion, feedback and noise; 3 - stability of coupled systems: background, Nyquist's criterion principle, Revers' criterion, advantages of the method, simplified criterion in Bode and Nichols' coordinates, generalized Nyquist's criterion, extension to the case of a pole at the origin, research of instability - the case of oscillators; 4 - conclusion. (J.S.)

Escane, J.M. [Ecole Superieure d' Electricite, 91 - Gif-sur-Yvette (France)

2005-10-01

325

Carbon Sequestration in Mediterranean Tidal Wetlands: San Francisco Bay and the Ebro River Delta (Invited)  

Science.gov (United States)

Tidal wetlands accumulate soil carbon at relatively rapid rates, in large part because they build soil to counteract increases in sea-level rise. Because of the rapid rates of carbon sequestration, there is growing interest in evaluating carbon dynamics in tidal wetlands around the world; however, few measurements have been completed for mediterranean-type tidal wetlands, which tend to have relatively high levels of soil salinity, likely affecting both plant productivity and decomposition rates. We measured sediment accretion and carbon sequestration rates at tidal wetlands in two mediterranean regions: the San Francisco Bay Estuary (California, USA) and the Ebro River Delta (Catalonia, Spain). Sampling sites within each region represented a range of conditions in terms of soil salinity and plant communities, and these sites serve as potential analogs for long-term carbon sequestration in restored wetlands, which could receive credits under emerging policies for carbon management. Within San Francisco Bay, we collected six sediment cores per site at four salt marshes and two brackish tidal wetlands (two transects with three stations per transect at each site) in order to identify spatial variation both within and among wetlands in the Estuary. At the Ebro Delta, individual sediment cores were collected across 14 tidal wetland sites, including salt and brackish marshes from impounded areas, river mouths, coastal lagoon, and open bay settings. Cores were collected to 50 cm, and cores were dated using 137Cs and 210Pb. Most sites within San Francisco accreted 0.3-0.5 cm/yr, with slightly higher rates of accretion at low marsh stations; accretions rates based on 137Cs were slightly higher than those based on 210Pb, likely because of the shorter time frame covered by 137Cs dating. Accretion rates from the Ebro Delta sites were similar although more variable, with rates based on 137Cs ranging from 0.1 to 0.9 cm/yr and reflecting the wide range of conditions and management history across sites within the Delta. At the San Francisco Bay sites, carbon sequestration rates averaged approximately 80 g/m2/yr over the 100-year time span of 210Pb and as with accretion, were slightly higher for 137Cs-based rates. Variation in long-term carbon sequestration rates across sites and stations within San Francisco Bay was much smaller than the variation in mineral inputs, and there was little difference in carbon sequestration rates among sites, or across stations within San Francisco Bay sites. Carbon sequestration rates from the Ebro Delta were more variable and higher than San Francisco Bay sites, with 137Cs-based rates ranging from 20 to 500 g/m2/yr. Low salinity sites had slightly higher rates of sequestration than salt marsh locations; however, even some salt marsh locations within the Delta had high rates of sequestration (> 200g/m2/yr). As expected high rates of sequestration were associated with locations that had high rates of sediment accretion.

Callaway, J.; Fennessy, S.; Ibanez, C.

2013-12-01

326

Anthropogenic influence on recent bathymetric change in west-central San Francisco Bay  

Science.gov (United States)

Two multibeam sonar surveys of west-central San Francisco Bay, California, were conducted in 1997 and 2008. Bathymetric change analysis between the two surveys indicates a loss of 14.1 million cubic meters (-3.1 cm/yr-1) of sediment during this time period, representing an approximately three-fold acceleration of the rate that was observed from prior depth change analysis from 1947 to 1979 for all of Central Bay, using more spatially coarse National Ocean Service (NOS) soundings. The portions of the overlapping survey areas between 1997 and 2008 designated as aggregate mining lease sites lost sediment at five times the rate of the remainder of west-central San Francisco Bay. Despite covering only 28% of the analysis area, volume change within leasing areas accounted for 9.2 million cubic meters of sediment loss, while the rest of the area lost 4.9 million cubic meters of sediment. The uncertainty of this recent analysis is more tightly constrained due to more stringent controls on vertical and horizontal position via tightly coupled, inertially aided differential Global Positioning Systems (GPS) solutions for survey vessel trajectory that virtually eliminate inaccuracies from traditional tide modeling and vessel motion artifacts. Further, quantification of systematic depth measurement error can now be calculated through comparison of static surfaces (e.g., bedrock) between surveys using seafloor habitat maps based on acoustic backscatter measurements and ground-truthing with grab samples and underwater video. Sediment loss in the entire San Francisco Bay Coastal System during the last half-century,as estimated from a series of bathymetric change studies, is 240 million cubic meters, and most of this is believed to be coarse sediment (i.e., sand and gravel) from Central Bay and the San Francisco Bar, which is likely to limit the sand supply to adjacent, open-coast beaches. This hypothesis is supported by a calibrated numerical model in a related study that indicates that there is a potential net export of sand-sized sediment across the Golden Gate, suggesting that a reduction in the supply of sand-sized sediment within west-central San Francisco Bay will limit transport to the outer coast.

Barnard, Patrick; Kvitek, Rikk G.

2010-01-01

327

High-resolution SANS experiments by double-crystal technique  

International Nuclear Information System (INIS)

Though small-angle scattering is a method suitable for investigation of microstructure in a wide mesoscopic size range (about 1 nm to 1 ?m), the dynamic Q-range in a single SANS spectrum - defined as the ratio of the maximum value of the scattering vector Q to the Q-resolution of the instrument - is rarely better than about 10. The combination of measurements performed at different Q regions is therefore necessary for better evaluation of SANS experiments, particularly in case of polydisperse systems. Variation of instrument length, slit sizes and neutron wavelength is the usual way how to extend the Q-range accessible at a conventional pinhole SANS instrument. Nevertheless, this possibility is limited on the side of small Q values because of restrictions imposed on the physical length and luminosity of SANS facilities even if they are equipped with an efficient cold neutron source. Alternative techniques for SANS investigation of large objects requiring ultra high resolution were developed, based on the nondispersive arrangement of two perfect crystals. This contribution is focused on the double bent crystal (DBC) diffractometers operating in the intermediate Q-range of 10-4 to 10-2 A-1, which is difficult to access by both the types of instruments mentioned above. (author)

1999-04-01

328

Renegotiating motherhood:modernity, gender & reproduction in San Miguel de Allende, Mexico  

Digital Repository Infrastructure Vision for European Research (DRIVER)

This thesis is based on fieldwork carried out in the Mexican city of San Miguel de Allende and its outlying communities. In this study I focus on the changing role of mother and wife in relation to family, community, and state. My fieldwork has shown that a younger generation of women portray themselves as experiencing motherhood differently than their own mothers. The state?s construction of the ?modern? mother is a dominant image in the lives of both urban and rural women, wh...

Wynne, Kimberly

2007-01-01

329

33 CFR 100.1105 - San Francisco Bay Navy Fleetweek Parade of Ships and Blue Angels Demonstration.  

Science.gov (United States)

... false San Francisco Bay Navy Fleetweek Parade of Ships and Blue Angels Demonstration...1105 San Francisco Bay Navy Fleetweek Parade of Ships and Blue Angels Demonstration...Navy/City of San Francisco Fleetweek Parade of Navy Ships and Navy...

2009-07-01

330

40 CFR 180.1108 - Delta endotoxin of Bacillus thuringiensis variety San Diego encapsulated into killed Pseudomonas...  

Science.gov (United States)

...variety San Diego encapsulated into killed Pseudomonas fluorescens; exemption from the requirement...San Diego encapsulated into killed Pseudomonas fluorescens; exemption from the requirement...San Diego encapsulated into killed Pseudomonas fluorescens is exempt from the...

2010-07-01

331

Trends in therapeutic abortion in San Francisco.  

Science.gov (United States)

Positive and negative aspects of therapeutic abortion are discussed upon review of trends found in the 6201 abortions performed in San Francisco between 1968 and 1970 (since Abortion was legalized in California in 1967). On the positive side, legalized abortion appears to have reduced the septic abortion rate (68 per 1000 live births in 1967 to 22 per 1000 in 1969) indicating a decline in criminal abortion. Maternal mortality has also declined from 8 per 100,000 to just over 3 per 100,000 from 1967 to 1969. Patients requesting abortion have averaged in age from 20-24 (26% were less than 19) and approximately half have been nulliparous. 37% of teenagers had saline abortions. Negative aspects have included the increasing morbidity rate associated with saline abortion, a second-trimester method. Compared to abortions performed at 12 weeks' gestation or less (usually done by vacuum aspiration), saline abortions required 5.7% second admissions (only 1.2% of the early abortions required readmission) and necessitated transfusion 3 times as often (in 2.3% of the cases). Regardless of the procedure used, later abortion involved a greater risk of hermorrhage and infection (2.7% incidence at 5-6 weeks' gestation compared to 12.9% at 11-12 weeks). Morbidity accompanying saline abortion was similar at 15 and 20 weeks however. Fortunately a trend toward earlier abortion is indicated. (74% of abortions were by suction and 22% by saline in 1970). Hysterotomy plus tubal ligation and hysterectomy accounted for only 4% of abortions but were accompanied by hemorrhage rates of 31% and 27% respectively and had respective infection rates of 13% and 22%. Private patients received abortions 3 times more often than ward patients although ward patients were subjected to more traumatic procedures: hysterectomies for ward patients were 2.0% vs .9% for private patients; sterilization by tubal ligation following suction abortion was 3.5% vs 1.7%. Additionally, black women had later abortions more often than white patients (33% of the black women were seen after 14 weeks gestation compared to 20% of the white women). Obstructions to early abortion must be eliminated to avoid such discrepancies in opportunity. Psychiatric examinations are unnecessary and causes for administrative delays must be remedied. Cost still presents a barrier for some women. The long-term effects of abortion now suggested by data from countries such as Czechoslovakia indicate that abortion is best viewed as a back-up measure to contraception making increased sex education, counseling and contraceptive practice essential. PMID:5024298

Goldstein, P; Stewart, G

1972-05-01

332

Deep bore hole instrumentation along San Francisco Bay Bridges  

Energy Technology Data Exchange (ETDEWEB)

The Bay Bridges down hole network consists of sensors in bore holes that are drilled 100 ft. into bedrock around and in the San Francisco Bay. Between 2 and 8 instruments have been spaced along the Dumbarton, San Mateo, Bay, and San Rafael bridges. The instruments will provide multiple use data that is important to geotechnical, structural engineering, and seismological studies. The holes are between 100 and 1000 ft deep and were drilled by Caltrans. There are twenty- one sensor packages at fifteen sites. Extensive financial support is being contributed by Caltrans, UCB, LBL, LLNL-LDRD, U.C. Campus/Laboratory Collaboration (CLC) program, and USGS. The down hole instrument package contains a three component HS-1 seismometer and three orthogonal Wilcox 73 1 accelerometers, and is capable of recording a micro g from local M = 1.0 earthquakes to 0.5 g strong ground motion form large Bay Area earthquakes.

Bakun, W.; Bowman, J.; Clymer, R.; Foxall, W.; Hipley, P.; Hollfelder, J.; Hutchings, L.; Jarpe, S.; Kasameyer, P.; McEvilly, T.; Mualchin, L.; Palmer, M.

1998-10-01

333

Villa San Michele at Capri â?? a House with a distinct home for "Genius Loci"  

DEFF Research Database (Denmark)

To address the relationship between House & Home from a theoretical perspective we set out on an journey towards Southern Europe; seeking answers to how a fellow Scandinavian here constructed a house, that was built of "Roba di Tiberio" - columns, capitals, fragments of statues - that was dug up on the spot. When we approached Capri by crossing the Neapolitan bay the first thing our eyes saw was the chapel of San Michele resting high above the blue waters at the top of the steep cliffs - on the edge of the abyss. This place is also the location of the Egyptian Sphinx, half lion, half woman; in a transient moment of clarity we had seen her face in our dreams. Capri was the place where eccentrics and wealthy fantasists could exorcize their demons: Goethe, Rilke and Nietzsche loved Capri. The island described by the Scandinavian poet Hans Christian Andersen visiting the Blue Grotta, the personal swimming hole of the Roman emperor Tiberius, as a â??Fairy Worldâ?, was also the stupendous home of Axel Munthe. At Villa San Michele, entering through the beautiful loggias and the long row of arcades to the chapel that Munthe also restored, our eyes first felt the enigma of the spirit of the place - we wanted to know what happened. When Tiberius lived in his home on the island, the sphinx was already 1000 years old. Now the fantasy creature is on the last outpost of Muntheâ??s Villa San Michele where it lays majestic, at home, as the guardian spirit of the place â?? genius loci. It is our thesis that the spirit of the place adjoins a metaphysical core of architecture; and as the very core of architecture could be connected to an absolute truth so it seems that genius loci is related to truth; even though it is a truth that is not directly visible. We ask in this paper if it is a truth that is perennially present? And furthermore with which eyes are we to see this truth? Nietzsche was concerned with truth and the eyes that recognize truth: â??There are various eyes. Even the Sphinx has eyes: and as a result there are various truths, and as a result there is no truth.â? Let us enhance with the gaze of the Sphinx. For Nietzsche, the Sphinx becomes not the symbol of truth but of â??truthâ?. The will to truth tempts us to many a hazardous enterprise. It is, says Nietzsche, the Sphinx who asks us questionable questions. That day at Villa San Michele we felt the enigma of the spirit of the place, but if we are going to hear the Sphinx ask us questions, all these riddling puzzles, we first have to ask the Sphinx to know how to ask questions. That genius loci are present in architectural theory owes much to the Scandinavian theoretician and architect Christian Norberg-Schulz, who emphasized considerations to the specific characteristics and atmosphere of a place. Is the atmosphere of Villa San Michele thus the key word in the understanding of the physical and metaphysical levels and layers of architectural language in this home of archaeological origin? We focus in our paper with these theoretical views on Villa San Michelethrough an architectural lens and perspective within the frames of House&Home on the language of architecture, and ask; can we explain the language of genius loci in Villa San Michele? Can we hereby clearly see how Axel Munthe - who was not an architect â?? could build a house at the very core of architecture and create a home caught between reality and dream?

Fisker, Anna Marie; Danielsen, Mads Harder

2014-01-01

334

Simulation of Virtual SANS Spectrometers at IBR-2 Reactor  

CERN Document Server

The experience gained in the last 15 years of experimental studies of large-scale structures with the SANS instrument at the IBR-2 pulsed reactor in Dubna shows that some parameters of the spectrometer can be improved. In particular, it concerns reduction of the fast neutron and gamma backgrounds that limit the possibilities of studying weakly scattering objects. Another direction of improvement is to reduce a minimum momentum transfer value Qmin to study objects with larger characteristic dimensions. The paper investigates several configurations of the SANS machine at IBR-2. The Monte Carlo codes are used to calculate the parameters of such virtual instruments. An optimal instrument structure is proposed.

Belushkin, A V

2001-01-01

335

Planning from the bottom up. San Diego Regional Comprehensive Plan  

Directory of Open Access Journals (Sweden)

Full Text Available The contemporary cities extend ever more in the outlying territory, basing their extension on railway infrastructures. They are cities which have differentiated spaces, specialized and separate, for living quarters and for economic activities, for entertainment and for economic activities, for entertainment and for buisness, which are connected with each other solely by these networks of infrastructures. This article intends to give an idea of the recent developments in controlling this dispersion by giving an account of the experience of the Region (County of San Diego (USA. The case of San Diego of particular interest inasmuch as it is a case of bottom-up planning.

Inés Sánchez de Madariaga

2013-02-01

336

SANS structural study of a microporous carbonized resole  

International Nuclear Information System (INIS)

Complete text of publication follows. A way to generate a microporous carbon structure is to carbonize and optionally activate a high carbon yield polymeric precursor such as a phenol-formaldehyde resole [1]. Carbonized resole samples are studied by SANS (non-activated) and nitrogen adsorption at 77 K (activated and non-activated samples) [2]. Porod plots and modified Guinier analysis of various potential geometries are presented. On the basis of the results obtained from SANS and nitrogen adsorption a carbonized resole model based on 4.0 nm solid structural units and a network of nearly isotropic pores is proposed. (author)

1999-01-01

337

Una réplica inédita de Zurbarán de un San Carmelo  

Directory of Open Access Journals (Sweden)

Full Text Available The recent appearance of a replica of an unpublished painting by Zurbarán of Saint Carmelo allows for the reconstruction of the De Profundis hall of the Convent of Shod Mercedarians in Seville. Originally this painting was paired there with Saint Serapis, today in the Wadsworth Atheneum of Hartford, Connecticutt (USA.La aparición de una réplica de una pintura de Zurbarán inédita que representa a San Carmelo, permite la reconstrucción de la decoración de la sala De Profundis del Convento de la Merced Calzada de Sevilla. Allí esta pintura formaba pareja con el San Serapio conservado actualmente en el Wadsworth Atheneum de Hartford (USA.

Valdivieso, Enrique

2010-09-01

338

Tecnología ósea del alero Las Tumanas (LT1), Valle Fértil, San Juan / Bone technology of Las Tumanas rockshelter (LT1), Valle Fértil, San Juan  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish Presentamos el conjunto de instrumentos óseos del alero Las Tumanas (LT1) -Valle Fértil, San Juan- que representan ocupaciones humanas de comunidades productoras de baja intensidad del Holoceno tardío. Los objetivos principales de esta contribución son determinar las actividades realizadas en el ale [...] ro relacionadas con la construcción, uso y descarte de instrumentos óseos y discutir los alcances interpretativos en una escala macroregional. Determinamos las categorías taxonómicas y anatómicas de los soportes óseos y las relacionamos con la disponibilidad de los recursos faunísticos a partir del conjunto óseo registrado en el alero. También analizamos la distribución espacial de los instrumentos definiendo dos sectores de actividad relacionados con el uso y descarte. Finalmente postulamos una relación entre las características de la tecnología ósea con funciones relacionadas con la manipulación de materias blandas y actividades de punzar y coser. Abstract in english We introduce here the bone assemblage tools from Las Tumanas rockshelter -Valle Fertil, San Juanrepresenting human occupation of low level intensity production communities of late Holocene. The aims of this paper is to determine the rockshelter activities linked with construction, use and discarded [...] of bone tool's and to discuss the interpretive scopes in a macro regional scale. We determine taxonomics and anatomical bone supports and relate them with availability of the faunal resources from the bone assemblage recorded in the site. Also we analyze the spatial distribution of the instruments defining two sectors of activity related to the use and discarded. Finally we postulate a relation between the characteristics of the bone technology with functions related to the manipulation of soft matters and activities to perforate and sewing.

Cahiza, Pablo; Aguilar, Juan Pablo; García Llorca, Jorge.

339

Benthic macrofauna data for San Francisco Bay, California, September 1986  

Science.gov (United States)

Benthic macrofauna were collected during September 1986 to evaluate locations for long-term monitoring stations as part of the U.S. Geological Survey Regional Effects Monitoring Program in San Francisco Bay, California. Three to ten replicate samples were collected with a modified Van Veen sampler (0.05 m2 area) at ten locations. One box core sample (0.06 m2 area) was collected at seven to the ten locations. Six of the box core samples were split into an upper 10 cm sample and a deeper sample before analysis. Macrofauna specimens were identified to the lowest possible taxon, usually genus and species, then counted. An average of 88 percent of the benthic macrofauna specimens were identified to the species level. The fraction identified varied among stations from 54 to 98 percent. Nematodes and oligochaetes accounted for most of the unidentified specimens. Relative to the total number of species identified in five replicates at each location, an average of 90 percent of the species were collected with three replicates. In general, species with high to moderate abundances were present in all replicates, and species collected only after three or more replicates averaged less than one specimen per replicate. Results from the box cores showed that the dominant species were most abundant in the upper 10 cm, the depth of sediment that can be adequately sampled with a modified Van Veen sampler. On the basis of the number of species and their abundances at each location, seven of the ten locations were selected for sampling in the regular program, which began in March 1987.

Schemel, Laurence E.; Thompson, J. K.; Harmon, J. G.; Yost, B. T.

1995-01-01

340

A summary of the San Francisco tidal wetlands restoration series  

Directory of Open Access Journals (Sweden)

Full Text Available The four topical articles of the Tidal Wetlands Restoration Series summarized and synthesized much of what is known about tidal wetlands and tidal wetland restoration in the San Francisco Estuary (hereafter ?Estuary?. Despite a substantial amount of available information, major uncertainties remain. A major uncertainty with regard to fishes is the net benefit of restored tidal wetlands relative to other habitats for native fishes in different regions of the Estuary given the presence of numerous invasive alien species. With regard to organic carbon, a major uncertainty is the net benefit of land use change given uncertainty about the quantity and quality of different forms of organic carbon resulting from different land uses. A major challenge is determining the flux of organic carbon from open systems like tidal wetlands. Converting present land uses to tidal wetlands will almost certainly result in increased methylation of mercury at the local scale with associated accumulation of mercury within local food webs. However, it is unclear if such local accumulation is of concern for fish, wildlife or humans at the local scale or if cumulative effects at the regional scale will emerge. Based on available information it is expected that restored tidal wetlands will remain stable once constructed; however, there is uncertainty associated with the available data regarding the balance of sediment accretion, sea-level rise, and sediment erosion. There is also uncertainty regarding the cumulative effect of many tidal restoration projects on sediment supply. The conclusions of the articles highlight the need to adopt a regional and multidisciplinary approach to tidal wetland restoration in the Estuary. The Science Program of the CALFED effort provides an appropriate venue for addressing these issues.

Larry R. Brown

2003-10-01

 
 
 
 
341

75 FR 59285 - Endangered and Threatened Wildlife and Plants; Permit, San Luis Obispo County, CA  

Science.gov (United States)

...Threatened Wildlife and Plants; Permit, San Luis...application from Barkwood Development, LLC (applicant...of federally listed plant or animal species...Shoulderband Snail and Four Plants from Western San Luis...facilitating: (1) Development and preparation of...

2010-09-27

342

77 FR 73311 - Special Local Regulation and Safety Zone; America's Cup Sailing Events, San Francisco, CA...  

Science.gov (United States)

...waters of San Francisco Bay adjacent to the City of San Francisco waterfront in the vicinity of the Golden Gate Bridge and Alcatraz Island. Inadvertently, this rule included errors in four navigational coordinates of the transit zone established for...

2012-12-10

343

UC San Diego researchers discover a new way to target–and kill–proliferating tumors:  

Science.gov (United States)

Researchers at the University of California, San Diego School of Medicine and the UC San Diego Moores Cancer Center have identified a new drug discovery approach enabling the destruction of the most highly proliferative tumors.

344

75 FR 1716 - Revisions to the California State Implementation Plan, San Joaquin Valley Unified Air Pollution...  

Science.gov (United States)

...Plan, San Joaquin Valley Unified Air Pollution Control District AGENCY: Environmental...the San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD...authority to regulate sources of air pollution. The fee provision of CAA...

2010-01-13

345

77 FR 24883 - Revisions to the California State Implementation Plan, San Joaquin Valley Unified Air Pollution...  

Science.gov (United States)

...Plan, San Joaquin Valley Unified Air Pollution Control District AGENCY: Environmental...the San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD...52 Environmental protection, Air pollution control, Intergovernmental...

2012-04-26

346

75 FR 57862 - Revisions to the California State Implementation Plan, San Joaquin Valley Unified Air Pollution...  

Science.gov (United States)

...Plan, San Joaquin Valley Unified Air Pollution Control District AGENCY: Environmental...the San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD...52 Environmental protection, Air pollution control, Incorporation by...

2010-09-23

347

76 FR 56706 - Revisions to the California State Implementation Plan, San Joaquin Valley Unified Air Pollution...  

Science.gov (United States)

...Plan, San Joaquin Valley Unified Air Pollution Control District AGENCY: Environmental...the San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD...52 Environmental protection, Air pollution control, Intergovernmental...

2011-09-14

348

76 FR 52623 - Revisions to the California State Implementation Plan, San Joaquin Valley Unified Air Pollution...  

Science.gov (United States)

...Plan, San Joaquin Valley Unified Air Pollution Control District AGENCY: Environmental...the San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD...52 Environmental protection, Air pollution control, Intergovernmental...

2011-08-23

349

76 FR 37044 - Revisions to the California State Implementation Plan, San Joaquin Valley Unified Air Pollution...  

Science.gov (United States)

...Plan, San Joaquin Valley Unified Air Pollution Control District AGENCY: Environmental...the San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD...52 Environmental protection, Air pollution control, Intergovernmental...

2011-06-24

350

75 FR 11939 - Integrated Silicon Solution, Inc. (ISSI); San Jose, CA; Notice of Termination of Investigation  

Science.gov (United States)

...and Training Administration [TA-W-71,253] Integrated Silicon Solution, Inc. (ISSI); San Jose, CA; Notice of Termination...response to a petition filed on behalf of workers at Integrated Silicon Solution, Inc., San Jose, California. The petitioner...

2010-03-12

351

Investigation of confined ionic liquid in nanostructured materials by a combination of SANS, contrast-matching SANS, and nitrogen adsorption.  

Science.gov (United States)

Small-angle neutron scattering (SANS), contrast-matching SANS, and nitrogen adsorption have been utilized to investigate the confined ionic liquid (IL) [bmim][PF(6)] phase in ordered mesoporous silica MCM-41 and SBA-15. The results suggest that the pores of SBA-15 are completely filled with IL whereas a small fraction of the pore volume, the pore "core", of MCM-41 is empty. The contrast-matching SANS measurements confirm the enhanced solubility of water in IL. In addition, they provide strong evidence that water does not enter the empty pore core of MCM-41, possibly because of the preferred orientation of the IL molecules in the adsorbed layer. PMID:21650166

Stefanopoulos, Konstantinos L; Romanos, George E; Vangeli, Olga C; Mergia, Konstantina; Kanellopoulos, Nick K; Koutsioubas, Alexandros; Lairez, Didier

2011-07-01

352

Improving default rates in Ambulatory Therapeutic Feeding Programmes in operations by Médecins sans Frontières Operational Centre Amsterdam  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Severe Acute Malnutrition is a serious medical condition prevalent in many areas with chronic or acute conflict. Organisations providing emergency relief in disaster-struck areas, such as Médecins sans Frontières-Operational Centre Amsterdam (MSF-OCA), have established feeding programmes in many of these countries. Since a predominantly centre-based treatment mode was replaced by an ambulatory treatment approach some of the programmes have been subject to relatively high defaulter rates. De...

Velden, E.

2008-01-01

353

"Why Do You Write Your Name Long Like That?" Language and Literacy in a San Francisco Kindergarten  

Digital Repository Infrastructure Vision for European Research (DRIVER)

In this thesis I investigate the role of language awareness in early literacy, and argue that skills acquired when becoming literate can provide resources for manipulating social as well as textual relations. Based on ethnographic research among a group of 5- and 6-year old kindergartners in a San Francisco public school, I describe how the kids' personal names provided them with stable landmarks with which to explore both oral and written language. The capacity of names to facilitate communi...

Helgesen, Espen

2008-01-01

354

Frictional strength heterogeneity and surface heat flow: Implications for the strength of the creeping San Andreas fault  

Science.gov (United States)

Heat flow measurements along much of the San Andreas fault (SAF) constrain the apparent coefficient of friction (??app) of the fault to 0.2 should be detectable even with the sparse existing observations, implying that ??app for the creeping section is as low as the surrounding SAF. Because the creeping section does not slip in large earthquakes, the mechanism controlling its weakness is not related to dynamic processes resulting from high slip rate earthquake ruptures. Copyright 2006 by the American Geophysical Union.

d'Alessio, M. A.; Williams, C. F.; Burgmann, R.

2006-01-01

355

Structure modelling of SANS data based on concentrated hard-sphere particles system  

International Nuclear Information System (INIS)

The application of hard-sphere model in interpreting SANS data has found useful in many material studies. The model has been adopted for analysis of SANS data collected from MINT facility. This paper describes the implication of the model in the study of materials using SANS as a probe. (author)

1999-10-01

356

33 CFR 165.1131 - Security Zone: Wilson Cove, San Clemente Island, California.  

Science.gov (United States)

...2009-07-01 false Security Zone: Wilson Cove, San Clemente Island, California...District § 165.1131 Security Zone: Wilson Cove, San Clemente Island, California...shoreline of San Clemente Island from Wilson Cove North End Light (LLNR 2565)...

2009-07-01

357

78 FR 43796 - Drawbridge Operation Regulation; China Basin, San Francisco, CA  

Science.gov (United States)

...Operation Regulation; China Basin, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION...across the China Basin, mile 0.0 at San Francisco, CA. The deviation is necessary to...SUPPLEMENTARY INFORMATION: The City of San Francisco Public Works Department has...

2013-07-22

358

76 FR 35805 - Port Access Route Study: The Approaches to San Francisco  

Science.gov (United States)

...Access Route Study: The Approaches to San Francisco AGENCY: Coast Guard, DHS. ACTION...vessel routing in the approaches to San Francisco. The study was completed in February...Access Route Study Approaches to San Francisco Bay'' February 2011. To view the...

2011-06-20

359

76 FR 45421 - Drawbridge Operation Regulation; China Basin, San Francisco, CA  

Science.gov (United States)

...Operation Regulation; China Basin, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION...across China Basin, mile 0.0, at San Francisco, CA. The deviation is necessary to...bridge to participate in the scheduled San Francisco Marathon, a community event. This...

2011-07-29

360

75 FR 67618 - Safety Zone: Richardson Ash Scattering by Fireworks, San Francisco, CA  

Science.gov (United States)

...Richardson Ash Scattering by Fireworks, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION...safety zone in the navigable waters of San Francisco Bay 1,500 feet off Yellow Bluff, Sausalito...Ellerson, U.S. Coast Guard Sector San Francisco; telephone 415-399-7436,...

2010-11-03

 
 
 
 
361

78 FR 74010 - Safety Zone: Sausalito Lighted Boat Parade Fireworks Display, San Francisco Bay, Sausalito, CA  

Science.gov (United States)

...Lighted Boat Parade Fireworks Display, San Francisco Bay, Sausalito, CA AGENCY: Coast Guard...zone in the navigable waters of the San Francisco Bay off of Spinnaker Point near Sausalito...Hawn, U.S. Coast Guard Sector San Francisco; telephone (415) 399-7442 or...

2013-12-10

362

76 FR 50124 - Drawbridge Operation Regulation; China Basin, San Francisco, CA  

Science.gov (United States)

...Operation Regulation; China Basin, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION...across China Basin, mile 0.0, at San Francisco, CA. The deviation is necessary to...SUPPLEMENTARY INFORMATION: The City of San Francisco requested a temporary change to the...

2011-08-12

363

76 FR 71260 - Drawbridge Operation Regulation; China Basin, San Francisco, CA  

Science.gov (United States)

...Operation Regulation; China Basin, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION...across China Basin, mile 0.0, at San Francisco, CA. The deviation is necessary to allow the City of San Francisco to inspect the bridge structure as...

2011-11-17

364

78 FR 31414 - Drawbridge Operation Regulation; China Basin, San Francisco, CA  

Science.gov (United States)

...Operation Regulation; China Basin, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION...the China Basin, mile 0.0, at San Francisco, CA. The deviation is necessary to...bridge to participate in the scheduled San Francisco Marathon, a community event. This...

2013-05-24

365

33 CFR 110.220 - Pacific Ocean at San Nicolas Island, Calif.; restricted anchorage areas.  

Science.gov (United States)

...2009-07-01 false Pacific Ocean at San Nicolas Island, Calif.; restricted anchorage...Grounds § 110.220 Pacific Ocean at San Nicolas Island, Calif.; restricted anchorage...50Ⳡ(the former position of San Nicolas Island East End Light), which...

2009-07-01

366

33 CFR 334.980 - Pacific Ocean; around San Nicolas Island, Calif., naval restricted area.  

Science.gov (United States)

...2010-07-01 false Pacific Ocean; around San Nicolas Island, Calif., naval restricted area...334.980 Pacific Ocean; around San Nicolas Island, Calif., naval restricted area...waters of the Pacific Ocean around San Nicolas Island, Calif., extending about...

2010-07-01

367

78 FR 33263 - Proposed Amendment of Class D and Class E Airspace; San Marcos, TX  

Science.gov (United States)

...of Class D and Class E Airspace; San Marcos, TX AGENCY: Federal Aviation Administration...amend Class D and Class E airspace at San Marcos, TX. Additional controlled airspace...Instrument Approach Procedures (SIAP) at San Marcos Municipal Airport and the...

2013-06-04

368

75 FR 22712 - Proposed Establishment of Class D Airspace; San Marcos, TX  

Science.gov (United States)

...Establishment of Class D Airspace; San Marcos, TX AGENCY: Federal Aviation Administration...proposes to establish Class D airspace at San Marcos, TX. Establishment of an air traffic...made controlled airspace necessary at San Marcos Municipal Airport. The FAA is...

2010-04-30

369

77 FR 35376 - San Antonio Water System; Notice of Petition for Declaratory Order and Soliciting Comments...  

Science.gov (United States)

...Commission [Docket No. DI12-7-000] San Antonio Water System; Notice of Petition for...May 29, 2012. d. Applicant: San Antonio Water System (SAWS). e. Name of Project...Conner, 28 U.S. Highway 281 North, San Antonio, [[Page 35377

2012-06-13

370

Population density, biomass, and age-class structure of the invasive clam Corbicula fluminea in rivers of the lower San Joaquin River watershed, California  

Science.gov (United States)

Corbicula fluminea is well known as an invasive filter-feeding freshwater bivalve with a variety of effects on ecosystem processes. However. C. fluminea has been relatively unstudied in the rivers of the western United States. In June 2003, we sampled C. fluminea at 16 sites in the San Joaquin River watershed of California, which was invaded by C. fluminea in the 1940s. Corbicula fluminea was common in 2 tributaries to the San Joaquin River, reaching densities of 200 clams??m-2, but was rare in the San Joaquin River. Biomass followed a similar pattern. Clams of the same age were shorter in the San Joaquin River than in the tributaries. Distribution of clams was different in the 2 tributaries, but the causes of the difference are unknown. The low density and biomass of clams in the San Joaquin River was likely due to stressful habitat or to water quality, because food was abundant. The success of C. fluminea invasions and subsequent effects on trophic processes likely depends on multiple factors. As C. fluminea continues to expand its range around the world, questions regarding invasion success and effects on ecosystems will become important in a wide array of environmental settings.

Brown, L. R.; Thompson, J. K.; Higgins, K.; Lucas, L. V.

2007-01-01

371

Perspective view, Landsat overlay San Andreas Fault, Palmdale, California  

Science.gov (United States)

The prominent linear feature straight down the center of this perspective view is the San Andreas Fault. This segment of the fault lies near the city of Palmdale, California (the flat area in the right half of the image) about 60 kilometers (37 miles) north of Los Angeles. The fault is the active tectonic boundary between the North American plate on the right, and the Pacific plate on the left. Relative to each other, the Pacific plate is moving away from the viewer and the North American plate is moving toward the viewer along what geologists call a right lateral strike-slip fault. Two large mountain ranges are visible, the San Gabriel Mountains on the left and the Tehachapi Mountains in the upper right. The Lake Palmdale Reservoir, approximately 1.5 kilometers (0.9 miles) across, sits in the topographic depression created by past movement along the fault. Highway 14 is the prominent linear feature starting at the lower left edge of the image and continuing along the far side of the reservoir. The patterns of residential and agricultural development around Palmdale are seen in the Landsat imagery in the right half of the image. SRTM topographic data will be used by geologists studying fault dynamics and landforms resulting from active tectonics.This type of display adds the important dimension of elevation to the study of land use and environmental processes as observed in satellite images. The perspective view was created by draping a Landsat satellite image over an SRTM elevation model. Topography is exaggerated 1.5 times vertically. The Landsat image was provided by the United States Geological Survey's Earth Resources Observations Systems (EROS) Data Center, Sioux Falls, South Dakota.Elevation data used in this image was acquired by the Shuttle Radar Topography Mission (SRTM) aboard the Space Shuttle Endeavour, launched on February 11,2000. SRTM used the same radar instrument that comprised the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) that flew twice on the Space Shuttle Endeavour in 1994. SRTM was designed to collect three-dimensional measurements of the Earth's surface. To collect the 3-D data, engineers added a 60-meter-long (200-foot) mast, installed additional C-band and X-band antennas, and improved tracking and navigation devices. The mission is a cooperative project between the National Aeronautics and Space Administration (NASA), the National Imagery and Mapping Agency (NIMA) of the U.S. Department of Defense (DoD), and the German and Italian space agencies. It is managed by NASA's Jet Propulsion Laboratory, Pasadena, CA, for NASA's Earth Science Enterprise,Washington, DC.Size: Varies in a perspective view Location: 34.58 deg. North lat., 118.13 deg. West lon. Orientation: Looking Northwest Original Data Resolution: SRTM and Landsat: 30 meters (99 feet) Date Acquired: February 16, 2000

2000-01-01

372

Emissions of organic carbon and methane from petroleum and dairy operations in California's San Joaquin Valley  

Directory of Open Access Journals (Sweden)

Full Text Available Petroleum and dairy operations are prominent sources of gas-phase organic compounds in California's San Joaquin Valley. Ground site measurements in Bakersfield and aircraft measurements of reactive gas-phase organic compounds were made in this region as part of the CalNex (California Research at the Nexus of Air Quality and Climate Change project to determine the sources contributing to regional gas-phase organic carbon emissions. Using a combination of near-source and downwind data, we assess the composition and magnitude of emissions from these prominent sources that are relatively understudied compared to motor vehicles We also developed a statistical modeling method with the FLEXPART-WRF transport and meteorological model using ground-based data to assess the spatial distribution of emissions in the San Joaquin Valley. We present evidence for large sources of paraffinic hydrocarbons from petroleum extraction/processing operations and oxygenated compounds from dairy (and other cattle operations. In addition to the small straight-chain alkanes typically associated with petroleum operations, we observed a wide range of branched and cyclic alkanes that have limited previous in situ measurements or characterization in emissions from petroleum operations. Observed dairy emissions were dominated by ethanol, methanol, and acetic acid, and methane. Dairy operations were responsible for the vast majority of methane emissions in the San Joaquin Valley; observations of methane were well-correlated with non-vehicular ethanol, and multiple assessments of the spatial distribution of emissions in the San Joaquin Valley highlight the dominance of dairy operations for methane emissions. The good agreement of the observed petroleum operations source profile with the measured composition of non-methane hydrocarbons in unrefined natural gas associated with crude oil suggests a fugitive emissions pathway during petroleum extraction, storage, or processing with negligible coincident methane emissions Aircraft observations of emission hotspots from operations at oil wells and dairies are consistent with the statistical source footprint determined via transport modeling and ground-based data. At Bakersfield, petroleum and dairy operations each comprised 22–23% of anthropogenic non-methane organic carbon and were each responsible for ~12% of potential precursors to ozone, but their direct impacts as potential SOA precursors were estimated to be minor. A comparison with the California Air Resources Board emission inventory supports the current relative emission rates of reactive organic gases from these sources in the region.

D. R. Gentner

2013-10-01

373

L’apport de la cartographie à l’étude des sociétés sans écriture: l’exemple des Celtes de l’âge du Fer.  

Directory of Open Access Journals (Sweden)

Full Text Available L’analyse spatiale est présente en archéologie à toutes les échelles. La datation des sociétés européennes sans écriture a été établie, de l’Égypte à la Scandinavie, par l’analyse de dépôts d’objets indigènes associés à des importations. Les groupes culturels sont identifiés par la répartition géographique des objets, des modes architecturales, des pratiques funéraires. Leur étude permet de dégager des courants d’influence incontestables, sans mouvements de population. L’explication économique n’est pas la seule, les relations aristocratiques ou la mode des banquets orientent les échanges. Les événements politiques ne laissent en revanche aucune trace clairement cartographiable.

Olivier Buchsenschutz

2006-09-01

374

SANS Investigation of the Photosynthetic Machinery of Chloroflexus Aurantiacus  

International Nuclear Information System (INIS)

Green photosynthetic bacteria harvest light and perform photosynthesis in low light environments, and contain specialized antenna complexes to adapt to this condition. In this report, we present studies using small-angle neutron scattering (SANS) to elucidate structural information about the photosynthetic apparatus, including the peripheral light harvesting chlorosome complex, the integral membrane light-harvesting B808-866 complex and the reaction center (RC) in the thermophilic green phototrophic bacterium Chloroflexus aurantiacus. Using contract variation in SANS measurements, our studies suggest that the B808-866 complex is wrapped around the RC in Cfx. aurantiacus, and the overall size and conformation for the B808-866 complex of Cfx. aurantiacus is roughly comparable to the LH1 antenna complex of the purple bacteria. A similar size for the isolated B808-866 complex is also suggested via dynamic light scattering measurements. Alos, a smaller size of the RC of Cfx. aurantiacus that the RC of the purple bacteria is observed. Further, our SANS measurements indicate that the chlorosome is a lipid body with rod-like shape, and that the self-assembly of bacteriochlorophylls, the major component of the chlorosome, is lipid-like. Finally, two populations of chlorosome particles are suggested in our SANS measurements.

2010-10-01

375

ASBESTOS SAMPLING PLAN FOR THE SAN FRANCISCO BAY AREA, CALIFORNIA  

Science.gov (United States)

This research project was initiated to facilitate the use of waterborne asbestos data for a possible case-control epidemiological study of ingested asbestos in five Bay Area counties near San Francisco, California. For each county, and each census tract within the area, informati...

376

UC San Diego study identifies early biomarker for pancreatic cancer  

Science.gov (United States)

Researchers at the University of California, San Diego School of Medicine and Moores Cancer Center have identified a new biomarker and therapeutic target for pancreatic cancer, an often-fatal disease for which there is currently no reliable method for early detection or therapeutic intervention. The paper will be published May 15 in Cancer Research.

377

The Basic Design Report of the 40M SANS Instrument  

Energy Technology Data Exchange (ETDEWEB)

The HANARO cold neutron research facility project was launched on July 1, 2003. A state of the art SANS instrument was selected as a top-priority instrument by an instrument selection committee, which consisted of domestic users and HANARO personnel. An instrument development team and an international and domestic instrument advisory team were formulated. The guide and the instrument simulation were performed using Vitess software and the optimum basic design was completed based on the simulation results and the international advisory team reviews. The optimum design of the guide for the 40M SANS instrument was completed and the optimum basic design of the 40M the SANS instrument was also completed based on the Vitess simulation results. The Q range of the instrument will cover from 0.0008 to 1.0 A-1 and the maximum flux at a sample position can reach about 5.5x10 7 n/cm2sec. The simulation results and the basic design product will be used for the detailed design and the construction of the SANS instrument. The simulation results could be applied to the development of the other instrument.

Han, Young Soo; Lee, Chang Hee; Hwang, Dong Gil; Kim, Hak Rho [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of); Kim, Tae Hwan; Choi, Sung Min [Korea Advanced Institute of Science and Technology, Daejeon (Korea, Republic of)

2006-04-15

378

Educational Program Master Plan for San Mateo Community College District.  

Science.gov (United States)

In 1974, the San Mateo Community College District (SMCCD) organized a District Master Planning Committee (DMPC), which was charged with outlining a planning program for the District which would be responsive to individual and community needs. The DMPC was comprised of student, staff, and community representatives, and was aided by a District…

San Mateo Community Coll. District, CA.

379

A Water Quality Study: Heron's Head Park, San Francisco, California  

Science.gov (United States)

Heron's Head Park, formerly known as Pier 98, is a 24-acre restored wetland, owned and operated by the Port of San Francisco and situated at the base of the Hunter's Point Power Plant. Heron's Head is a unique environment that is built on landfill and is now a thriving marsh maintained primarily by youth and community volunteers. Adjacent to the park stands a PG&E power plant (closed May 2006), a county waste transfer station, and a combined sewer overflow (CSO) pipe. The park is bordered by San Francisco Bay on the north, east and south sides of the park. We examined the levels of ammonia, nitrite, nitrate, phosphate and fecal coliform at nine sites around the park. Utilizing historical data from other San Francisco Bay sites and other similar estuarine settings in California, we assessed the health of the Bay waters surrounding the park. We found the levels of ammonia, nitrate, nitrite and phosphates to be within the parameters of historical San Francisco Bay data and similar to settings such as Elkhorn Slough, Tomales Bay and Tijuana Estuary. In our study we did find a potential hazard to human health. Fecal coliform concentrations in waters that border the park range from 340 MPN/100 mL - 24,000 MPN/100 mL. This level significantly exceeds Environmental Protection Agency recommendations of 300 MPN/100 mL for human contact with water.

Li, A.; Wu, K.; Neiss, J.

2007-12-01

380

New SANS diffractometer and neutron interferometric device at NPI Rez  

International Nuclear Information System (INIS)

The project of the new facility being under construction at the 8th beam of the LVR-15 reactor at NPI Rez is reported, as well as some testing SANS and preliminary interferometric experiments. Full operation of the device is expected by the end of 1991. (orig.)

1992-06-01

 
 
 
 
381

New SANS diffractometer and neutron interferometric device at NPI Rez  

Energy Technology Data Exchange (ETDEWEB)

The project of the new facility being under construction at the 8th beam of the LVR-15 reactor at NPI Rez is reported, as well as some testing SANS and preliminary interferometric experiments. Full operation of the device is expected by the end of 1991. (orig.).

Lukas, P.; Mikula, P.; Kulda, J.; Saroun, J.; Strunz, P. (Nuclear Physics Inst., Rez (Czechoslovakia))

1992-06-01

382

OZONE OVER SAN FRANCISCO. MEANS AND PATTERNS DURING POLLUTION EPISODES  

Science.gov (United States)

Measurements of meteorological parameters were taken at six levels and ozone at four levels between 260m and 473m ASL on the Mt. Sutro T.V. Tower in San Francisco during the summers of 1974 through 1976. Hourly average ozone concentrations within the elevated inversion layer at t...

383

Preliminary SANS studies on nanocrystalline and polymer systems  

Energy Technology Data Exchange (ETDEWEB)

We reported some preliminary data on SANS experiment from Nd-Fb-B nanocrystalline commercial sample. The profile at even 12 m SDD (Sample-Detector Distance) still could not include the peak. Some polymer systems representing graft (ABS) and blend (ABS-LDPE and ABS-PP) polymers are also investigated. The profiles are not very satisfactory. (author)

Ikram, A.; Purwanto, A.; Sudirman; Insani, A.; Prasetyo, SM [R and D Center for Materials Science and Technology, National Nuclear Energy Agency, Serpong (Indonesia)

2000-10-01

384

San Nicolas Island surface radiation-meteorology data  

Science.gov (United States)

A summary of the surface data collected by Colorado State University (CSU) on San Nicolas Island during the First ISCCP Regional Experiment (FIRE) from 30 June (Julian Day 181) through 19 July (Julian Day 200) is given. The data are available in two formats: hard copy graphs, and processed data on floppy disk.

Johnson-Pasqua, Christopher M.; Cox, Stephen K.

1990-01-01

385

Geology of Sierra de San Miguel area Rocha department (Uruguay)  

International Nuclear Information System (INIS)

This paper is part of a regional study about Mesozoic magmatism, tectonics and sedimentation in Uruguay. As a result of the geological studies carried out in Sierra de San Miguel area (Rocha department), lithological descriptions, their stratigraphic relationships and their petrographic characterization are presented

2004-09-01

386

Strain-softening instability model for the san fernando earthquake  

Science.gov (United States)

Changes in the ground elevation observed before and immediately after the 1971 San Fernando, California, earthquake are consistent with a theoretical model in which fault zone rocks are strain-softening after peak stress. The model implies that the slip rate of the fault increased to about 0.1 meter per year near the focus before the earthquake.

Stuart, W. D.

1979-01-01

387

Characterization of aerosols in the Metropolitan Area of San Jose  

International Nuclear Information System (INIS)

The objective of the present study, was to elaborate a profile of the contamination by private matter and to characterize the aerosols collected in the Metropolitan Area of San Jose (Costa Rica). For that, a campaign of sampling was carried out in three points of the city of San Jose, differentiated by there degree of activity: Center of San Jose (Central Station of Firemen), San Isidro of Coronado -Canton of Vasquez of Coronado- (Municipality) and Escazu (Municipality). Such campaign was carried out from April 4 to July 4, 1996 (transition summer-winter), and in two periods of time of 8 hours: 8 a.m. to 4 p.m. and of 8 p.m. to 4 a.m. The aerosols were collected utilizing Gent Pm-10 samplers, in filters of polycarbonate of 0,4 ?m and 8 ?m in cascade, with a flow average of 15 L/min., and it determined the composition average of the present aerosols. The concentration of the majority of the anions were obtained by means of ionic chromatography of high resolution, and the main cations by spectrophotometry of atomic absorption with electro thermic atomization. The space-temporary variations of the concentrations were evaluated and their correlation with the meteorologic variable. (S. Grainger)

1997-01-01

388

Programas sociales y bienestar social en comunidades oaxaqueñas: San Miguel Achiutla y San Ildefonso Sola  

Directory of Open Access Journals (Sweden)

Full Text Available Estudio realizado en dos comunidades del estado de Oaxaca, San Ildefonso Sola y San Miguel Achiutla, pertenecientes a la Región Sierra Sur y Mixteca respectivamente. La primera está conformada por población mestiza y la segunda por indígena mixtecos. Ambas comunidades presentan alto grado de marginación, y reflejan diversas carencias materiales que influyen negativamente en su bienestar, son comunidades pobres. Dedicados principalmente a la agricultura de subsistencia, los pobladores obtienen ingresos monetarios de otras actividades como venta de productos de palma, pan, tortillas, mezcal (estas actividades se han realizado en las comunidades de manera tradicional, han sido heredadas de generación en generación, productos de traspatio (la mayoría de los hogares cultivan frutas o verduras de uso diario en la cocina o para remedios caseros, también crían animales que contribuyen en sus actividades como burros, mulas, caballos o bueyes, y otros que les proporcionan alimentos o son alimento como gallinas, cerdos, chivos, borregos, etc. y comercialización de productos de abarrotes, en pocos casos realizan algún tipo de trabajo asalariado, sin embargo a pesar que sus fuentes de ingreso son diversas, estos ingresos que obtienen resultan en su mayoría insuficientes para satisfacer sus necesidades básicas. Son estas comunidades a las que van dirigidos los apoyos de diversos programas sociales, cuyo objetivo es contribuir en la superación de la pobreza, los programas que se refieren aquí son Oportunidades, Apoyo Alimentario y, 70 y más. Por tanto el propósito de la investigación es estudiar la incidencia que tienen los programas sociales que llegan a los hogares de las comunidades referidas anteriormente, sobre su nivel de bienestar. Se ha obtenido información de fuentes oficiales como INEGI (Instituto Nacional de Estadística y Geografía, CONAPO (Consejo Nacional de Población y SEDESOL (Secretaría de Desarrollo Social, así como de trabajo de campo realizado en ambas comunidades, aplicando cuestionarios y realizando observación directa. Al conocer en que proporción influyen los programas sociales sobre el bienestar social de los hogares, se podrá conocer que tan útiles son los recursos que destina el Estado para la superación de la pobreza, y si son efectivamente destinados para lo que fueron otorgados o se utilizan para cubrir otros gastos de los hogares en la satisfacción de necesidades distintas.

Mireya Carmina Cruz Aragón

2013-05-01

389

News Palynology data of the basal section of Formacion San Gregorio located in Paso de las Bochas (I lower permian north basin, Uruguay  

International Nuclear Information System (INIS)

Samples from outcrops and concretions of the locality of Paso de las Bochas on the Negro River, provided new palynologycal data to the basal section of the San Gregorio Formation. At least 10 new ta xa are added for San Gregorio concretions, and some of the cited palynomorphs are mentioned for the first time for Uruguay (Rattiganispora minor, Waltzispora pol ita). Moreover, some of the found ta xa have been mentioned for glacial deposits related to the Carboniferous-Permian boundary in other Gondwana regions (p.e. Psomospora detect a, Waltzispora pol ita). The preliminary results reached here allow to admit the hypothesis of the existence of carboniferous dee posits on the Uruguayan territory whose were eroded or not yet recognized. Keywords: San Gregorio Formation, Carboniferous

2004-09-01

390

[Biodiversity of land gastropods (Mollusca) in Sierra de San Javier Park, Tucumán, Argentina].  

Science.gov (United States)

Studies related to land mollusk diversity in tropical and subtropical forests are scarce. To assess this, a study on land snail diversity of subtropical cloudforest (Yungas) and dry forest (Chaco) areas of Sierra de San Javier Park, Tucumán, Argentina, was carried out. Taxonomic identifications were performed to species level and built a species per stations data matrix to analyze diversity patterns on qualitative and quantitative samples processed from 10x10m quadrates in altitudinal transects. Non parametric analysis (ICE, ACE, Chao 1 and Chao 2) were used to estimate the true diversity of the area, as well as the degree of undersampling and spatial aggregation of the data. Diversity was also calculated using Shannon, Simpson, Whittaker and Jacca