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1

The San Andreas fault experiment. [gross tectonic plates relative velocity  

Science.gov (United States)

A plan was developed during 1971 to determine gross tectonic plate motions along the San Andreas Fault System in California. Knowledge of the gross motion along the total fault system is an essential component in the construction of realistic deformation models of fault regions. Such mathematical models will be used in the future for studies which will eventually lead to prediction of major earthquakes. The main purpose of the experiment described is the determination of the relative velocity of the North American and the Pacific Plates. This motion being so extremely small, cannot be measured directly but can be deduced from distance measurements between points on opposite sites of the plate boundary taken over a number of years.

Smith, D. E.; Vonbun, F. O.

1973-01-01

2

Television Viewing Habits of San Juan Students Related to Achievement.  

Science.gov (United States)

This paper summarizes research on the effects of television viewing on student achievement. Information concerning students in the San Juan Unified School District in California is highlighted. Studies have revealed that: (1) watching more than 3 hours of television a day prevents students from engaging in other activities; (2) moderate television…

Housden, Theresa

3

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

4

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

5

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

6

Are scale-invariant stress orientations related to seismicity rates near the San Andreas fault?  

Science.gov (United States)

Based on an analysis of the direction of maximum horizontal compressive stress as a function of depth as observed at different scientific wells along the San Andreas fault, it has recently been suggested that the scale-invariant fluctuations in the stress orientation over intervals from tens of centimeters to several kilometers are directly related to the local earthquake magnitude-frequency statistics. Here we mathematically analyze the possibility of such a relationship and show that the magnitude-frequency statistics alone is insufficient to explain the scaling of the stress orientation fluctuations. While stress perturbations caused by slip on adjacent faults of various sizes can still be responsible for these fluctuations, the average amplitude of the induced changes in the orientation would have to increase nonlinearly with the fault size. As the example of two research wells near the San Andreas fault also shows, the specific nonlinear form would have to depend sensitively on the specific geographic location. We conclude that the observed scale-invariant fluctuations in the stress orientation are more likely a consequence of a combination of local seismicity rates and the specific local fault structure.

Davidsen, Jörn; Schumann, Aicko Y.; Naylor, Mark

2013-12-01

7

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 co 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.

8

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.

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

2009-06-01

9

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.

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

10

Magneto-optical Kerr effect. The relation between optical, transport and electronic properties in magnetic compounds.  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Magneto-optical Kerr effect. The relation between optical, transport and electronic properties in magnetic compounds. Wanneer lineair gepolariseerd licht wordt gereflecteerd aan het oppervlak van een magnetisch materiaal, is het gereflecteerde licht elliptisch gepolariseerd. Dit is het magneto-optisch Kerr effect. ... Zie: Samenvatting

Feil, Hermanus

1987-01-01

11

Study of the dispersion phenomena connected with the absorption by recoilless nuclear resonance fluorescence; Etude des phenomenes de dispersion lies a l'absorption resonnante sans recul des noyaux atomiques  

Energy Technology Data Exchange (ETDEWEB)

In nuclear resonance fluorescence as in the optical field abnormal dispersion curves are related to the absorption lines. It is possible, by using quadrupolar or magnetic splitting of the line in the case of recoilless resonance fluorescence (Moessbauer effect) to obtain differential dispersion effects between the two orthogonal linear or the two inverse circular components of the incident gamma radiation. These effects induce bi-refraction phenomena or Faraday rotation on the gamma beam, which have been studied on Fe-57 enriched absorbers. (author) [French] Comme dans le domaine optique, aux raies d'absorption de fluorescence resonnante des noyaux atomiques sont associees des courbes de dispersion anormale. Les decompositions des raies d'absorption de fluorescence resonnante sans recul (raies Moessbauer) par couplage quadrupolaire ou effet Zeeman permettent d'obtenir des effets dispersifs differentiels entre composantes lineaires orthogonales ou circulaires inverses du rayonnement gamma incident. Ces effets se traduisent par des phenomenes de birefringence ou de rotation Faraday, qui ont pu etre etudies sur des milieux enrichis en fer-57. (auteur)

Imbert, P. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

1965-12-01

12

Anomalous Diffuse CO2 Emission Changes at San Vicente Volcano Related to Earthquakes in El Salvador, Central America  

Science.gov (United States)

San Vicente or Chichontepeque (2,180 m a.s.l.) is a composite andesitic volcano located 50 Km east of San Salvador. Its paired edifice rises from the so-called Central Graben, an extensional structure parallel to the Pacific coast, and has been inactive for the last 3000 yrs. Fumaroles (98.2°C ) and hot spring waters are present along radial faults at two localities on the northern slope of the volcano (Aguas Agrias and El Infiernillo). CO2 is the most abundant component in the dry gas (>90%) and its mean isotopic composition (? 13C(CO2)=-2.11 ‰ and 3He/4He of 6.9 Ra) suggests a magmatic origin for the CO2. These manifestations are supposed to be linked to a 1,200 m depth 250°C reservoir with a CO2 partial pressure of 14 bar extended beneath the volcano (Aiuppa et al., 1997). In February 13, 2001, a 6.6 magnitude earthquake with epicenter about 20 Km W of San Vicente damaged and destroyed many towns and villages in the north area of the volcano causing some deceases. In addition, two seismic swarms were recorded beneath the northeastern flank of the volcano in April and May 2001. Searching for any link between the actual seismic activity and changes in the diffuse CO2 degassing at San Vicente, an NDIR instrument for continuos monitoring of the diffuse CO2 degassing was set up at Aguas Agrias in March 2001. Soil CO2 efflux and several meteorological and soil physical variables were measured in an hourly basis. Very significative pre-seismic and post-seismic relationships have been found in the observed diffuse CO2 efflux temporal variations related to the May 2001 seismic swarms. A sustained 50% increase on the average diffuse CO2 efflux was observed 8 days before the May 8, 5.1 magnitude earthquake. This pre-seismic behaviour may be considered a precursor of the May 2001 seismic swarm at San Vicente volcano. However, about a three-fold increase in the diffuse CO2 efflux was also observed after the intense seismicity recorded on May 8-9. These preliminary results suggest that changes in the fluid pore-pressure within faults/fractures associated to the volcanic roots may be triggering, enhancing and responding (aperture and closure of fractures) to the local seismicity in the area of San Vicente volcano.

Salazar, J.; Hernandez, P.; Perez, N.; Barahona, F.; Olmos, R.; Cartagena, R.; Soriano, T.; Notsu, K.; Lopez, D.

2001-12-01

13

Distribution of algae in the San Joaquin River, California, in relation to nutrient supply, salinity and other environmental factors  

Science.gov (United States)

1. The taxonomic composition and biomass of the phytoplankton and the taxonomic composition of the phytobenthos of the San Joaquin River and its major tributaries were examined in relation to water chemistry, habitat and flow regime. Agricultural drainage and subsurface flow contribute to a complex gradient of salinity and nutrients in this eutrophic, 'lowland type' river. 2. Because of light-limiting conditions for growth, maintenance demands of the algae exceed production during summer and autumn in the San Joaquin River where there is no inflow from tributaries. In contrast to substantial gains in concentration of inorganic nitrogen and soluble reactive phosphorus during the summer of normal-flow years, net losses of algal biomass (2-4 ??g L-1 day-1 chlorophyll a) occurred in a mid-river segment with no significant tributary inflow. However, downstream of a large tributary draining the Sierra Nevada, a substantial net gain in algal biomass (6-11 ??g L-1 day-1) occurred in the summer, but not in the spring (loss of 1-6 ??g L-1 day-1) or autumn (loss of 2-5 ??g L-1 day-1). 3. The phytoplankton was dominated in summer by 'r-selected' centric diatoms (Thalassiosirales), species both tolerant of variable salinity and widely distributed in the San Joaquin River. Pennate diatoms were proportionally more abundant (in biomass) in the winter, spring and autumn. Abundant taxa included the diatoms Cyclotella meneghiniana, Skeletonema cf. potamos, Cyclostephanos invisitatus, Thalassiosira weissflogii, Nitzschia acicularis, N. palea and N. reversa, and the chlorophytes Chlamydomonas sp. and Scenesdesmus quadricauda. Patterns in the abundance of species indicated that assembly of the phytoplankton is limited more by light and flow regime than by nutrient supply. 4. The phytobenthos was dominated by larger, more slowly reproducing pennate diatoms. Few of the abundant species are euryhaline. The diatoms Navicula recens and Nitzschia inconspicua and cyanophytes, Oscillatoria spp., were the principal late-summer benthic species upstream in the mainstem and in drainages of the San Joaquin Valley. Many of the other abundant diatoms (Amphora veneta, Bacillaria paxillifer, Navicula symmetrica, Nitzschia amphibia, N. fonticola, N. palea, Pleurosigma salinarum) of late-summer assemblages in these segments also are motile species. While many of these species also were abundant in segments downstream of confluences with rivers draining the Sierra Nevada, the relative abundance of prostrate (Cocconeis placentula var. euglypta, Navicula minima) and erect or stalked (Achnanthidium deflexum, Achnanthes lanceolata, Gomphonema kobayasii, G. parvulum var. lagenula) diatoms and Stigeoclonium sp. was greater in these lower San Joaquin River segments. 5. A weighted-averaging regression model, based on salinity and benthic-algal abundance in the San Joaquin River and segments of its major tributaries within the San Joaquin Valley, yielded a highly significant coefficient-of-determination (r2 = 0.84) and low prediction error between salinity inferred from the species and that observed, indicating that salinity tolerance is a primary constraint on growth and assembly of the phytobenthos. The same measures of predictability indicated poor performance of a model based on inorganic nitrogen. However, with a greater representation of tributaries (including segments within the Sierra Nevada foothills) in the sample set, an inorganic nitrogen model also yielded a highly significant coefficient-of-determination (r2 = 0.87) and low prediction error between the species-inferred and the observed concentration. As with the salinity model (r2 = 0.94) for the enlarged data set, a systematic difference (increased deviation of residuals) existed at high inorganic nitrogen concentrations. These results indicate substantial interaction between salinity and inorganic nitrogen as constraints on the structure of benthic-algal communities of the San Joaquin River basin.

Leland, H. V.; Brown, L. R.; Mueller, D. K.

2001-01-01

14

[Violence-related deaths in Argentina: two case studies in the cities of Venado Tuerto and San Rafael].  

Science.gov (United States)

This article presents the results of a comparative study of two Argentinian cities, namely Venado Tuerto and San Rafael, which revealed different trends in the rates of firearm-related homicides. The methodology combined two strategies of analysis: semi-structured interviews with key informants (municipal and provincial government agents in different areas of management, as well as members of non-governmental organizations) and focus groups with actors involved in medical care, education, and religious institutions. The results suggest little difference between cities in which rates have increased and those in which rates have decreased. The most significant difference was that in Venado Tuerto a greater fragility of public institutions was observed due to the lack of articulation between such institutions. In San Rafael, the actors interviewed attribute the low level of conflict to a violence prevention network in which provincial and municipal agencies interact. Although neither city is violent at the most critical Latin American levels, the different results shown in Venado Tuerco and San Rafael indicate the possibility of bringing institutions together in a joint framework of conversations, agreements and policies. PMID:23175402

Spinelli, Hugo; Alazraqui, Marcio; Galeano, Diego; Calandrón, Sabrina

2012-12-01

15

Effect of Racial and Ethnic Composition of Neighborhoods in San Francisco on Rates of Mental-Health Related 911 Calls  

Science.gov (United States)

Objective This study investigated the association between San Francisco neighborhoods’ racial/ethnic residential composition and the rate of mental-health-related 911 calls. Methods Calls to the San Francisco 911 system from January 2001 through June 2003 (n=1,341,608) were divided into mental-health-related and other calls. Police sector data in the call records were overlaid onto U.S. Census tracts to estimate sector demographic and socioeconomic characteristics. Negative binomial regression was used to estimate the association between black, Asian, Latino and white resident percentage and rates of mental-health-related calls. Results Percent of black residents was associated with a lower rate of mental-health-related calls (IRR=.99, 95% CI .98–1.00). Percent of Asian and Latino residents had no significant effect. Conclusions The observed relationship between black residents and mental-health-related calls is not consistent with known emergency mental health service utilization patterns. The paradox between underutilization of the 911 system and overutilization of psychiatric emergency services deserves further investigation. PMID:19797379

Kessell, Eric R.; Alvidrez, Jennifer; McConnell, William A.; Shumway, Martha

2010-01-01

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

17

Determination of the 20 MeV linear accelerator, new injector for the synchrotron Saturne. Choice of the electrical and dynamical particle parameters; Determination de l'accelerateur lineaire de 20 MeV, nouvel injecteur du synchrotron Saturne. Choix des parametres electriques, dynamique des particules  

Energy Technology Data Exchange (ETDEWEB)

This report takes place in the general determination of the 20 MeV linear accelerator which will be the new Saturne injector; it deals with particle dynamics. Starting from beam requirements at the output of the linac, cells lengths with variable synchronous phase angle, buncher and de-buncher parameters, beam emittances at the output in several phase spaces are successively determined. (author) [French] Dans le contexte general de la determination de l'accelerateur lineaire de 20 MeV, nouvel injecteur du synchrotron Saturne, ce rapport traite de la partie relative au mecanisme de l'acceleration des particules; a partir des caracteristiques souhaitees pour le faisceau a la sortie de cet accelerateur, on determine successivement les longueurs des cellules, compte tenu du choix d'un angle de phase synchrone variable, les caracteristiques du groupeur et du degroupeur et les emittances du faisceau en sortie dans les differents plans de phase. (auteur)

Prome, M. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

1968-12-15

18

Structural investigation of nonionic fluorinated micelles by SANS in relation to mesoporous silica materials.  

Science.gov (United States)

In an attempt to answer the question if there is dependence between the pore ordering of the mesoporous silica, obtained through the cooperative template mechanism, and the shape of the micellar aggregates of the surfactant solutions, the micellar structures of two nonionic fluorinated surfactant based-systems are studied by SANS. By fitting the experimental spectra with theoretical models, the structural evolution of the molecular aggregates can be described, and some important parameters can be obtained, such as the water and eventually oil penetration into the surfactant film, the aggregation number, the area per polar head of the surfactant, and the surfactant chain conformations. We have shown that for the C(8)F(17)C(2)H(4)(OC(2)H(4))(9)OH system, the micelles are prolate spheroids. The increase of the surfactant concentration in water does not change the characteristics of the interfacial film, but the aggregation number raises and the particles become more elongated. By contrast, the experimental curves of C(7)F(15)C(2)H(4)(OC(2)H(4))(8)OH cannot be fitted considering a small particle model. However, progressive incorporation of fluorocarbon induces a change of size and shape of the globules, which become smaller and more and more spherical. Regarding the material mesopore ordering, it appears that the micelles that lead to hexagonal mesoporous silica materials are described with a model of quasi-spherical globules. On the contrary, when large micelles are found, only wormhole-like structures are obtained. PMID:22145934

Michaux, Florentin; Blin, Jean-Luc; Teixeira, José; Stébé, Marie José

2012-01-12

19

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

20

Prediction des vibrations eoliennes d'un systeme conducteur-amortisseur avec une methode temporelle non lineaire  

Science.gov (United States)

Les vibrations eoliennes sont la cause principale de bris de conducteurs en fatigue des lignes aeriennes de transport d'energie electrique. Ces vibrations sont dues a des detachements tourbillonnaires produits dans le sillage du conducteur. Une methode commune de reduction des vibrations est l'ajout d'amortisseurs de vibrations pres des pinces de suspension. Contrairement aux essais en ligne experimentale, la modelisation numerique permet d'evaluer rapidement et a faible cout la performance d'un amortisseur de vibration sur une portee de ligne aerienne. La technologie la plus frequemment utilisee fait appel au principe de balance d'energie (PBE) en evaluant le niveau de vibrations pour lequel la puissance injectee par le vent est egale a la puissance dissipee par le conducteur et l'amortisseur. Les methodes actuelles pour la prediction des vibrations reposent sur des hypotheses simplificatrices quant a la modelisation de l'interaction conducteur-amortisseur. Une approche prometteuse pour la prediction des vibrations est l'utilisation d'un modele numerique temporel non lineaire qui permet de mieux representer la masse, la geometrie, la rigidite et l'amortissement du systeme. L'objectif principal de ce projet de recherche est de developper un modele numerique avec integration temporelle directe d'un conducteur et d'un amortisseur en vibration permettant de reproduire le comportement dynamique du systeme pour la gamme de frequence et d'amplitude typique des vibrations eoliennes des conducteurs. Un modele par elements finis d'un conducteur seul en vibration resolu par integration temporelle directe a d'abord ete developpe en considerant une rigidite de flexion variable. Comme une rigidite de flexion constante et egale a 50% de la rigidite de flexion maximale theorique ( EImax) est jugee adequate pour la modelisation du conducteur, c'est cette valeur qui a ete utilisee pour la suite du projet. Ensuite, des modeles non-lineaires pour deux types d'amortisseur de vibrations (Stockbridge et Hydro-Quebec) ont ete developpes. Ces modeles reproduisent adequatement le comportement dynamique des amortisseurs pour une grande gamme de frequences et d'amplitudes de deplacement. Finalement, les modeles d'amortisseur ont ete integres au modele de conducteur et uil nouvel outil de prediction de vibrations eoliennes base sur le principe de balance d'energie (PBE) a ete developpe. Celui-ci permet de bien reproduire des amplitudes de vibration mesurees sur une ligne experimentale, en particulier dans la gamme 8 a 35 Hz. A plus long terme, un tel modele pourrait servir de point de depart vers une modelisation temporelle complete du phenomene de vibrations eoliennes des conducteurs incluant l'excitation eolienne, l'auto-amortissement des conducteurs et des conditions limites realistes pour les lignes aeriennes. Mots-cles : dynamique de cable, elements finis, conducteurs, amortisseurs, vibrations eoliennes, lignes aeriennes electriques

Langlois, Sebastien

 
 
 
 
21

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)

22

Poro-mechanics: from linear to nonlinear poro-elasticity and poro-visco-elasticity; Poromecanique: de la poroelasticite lineaire a la poroelasticite non lineaire et la poroviscoelasticite  

Energy Technology Data Exchange (ETDEWEB)

Due to the impact on productivity and oil an place estimates, reliable modeling of rock behavior is essential in reservoir engineering. This paper examines several aspects of rock poro-elastic behavior within the framework of Biot's mechanics of fluid saturated porous solids. Constitutive laws of linear and nonlinear poro-elasticity are first determined from a fundamental stress decomposition, which allows to clearly connect linear and nonlinear models. Concept of effective stress and rock compressibility are considered. Linear incremental stress-strain relations are derived from the proposed nonlinear constitutive law by defining tangent elastic properties. These characteristics are naturally functions of strains and pore pressure, but explicit expressions as functions of stresses and pore pressure are established herein. Experiments performed on a reservoir sandstone illustrate these points. A constitutive law of poro-visco-elasticity is finally presented and applied to experimental data obtained on clay. (authors)

Bemer, E.; Bouteca, M.; Vincke, O. [Institut Francais du Petrole (IFP), 92 - Rueil-Malmaison (France); Hoteit, N.; Ozanam, O. [Agence Nationale pour la Gestion des Dechets Radioactifs ANDRA, 92 - Chatenay Malabry (France)

2001-07-01

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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 %.

Luis Enrique, Mayorga Mogollón.

2003-05-30

24

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...

25

Empirical relations to estimate underwater PAR attenuation in San Quintín Bay using Secchi depth and horizontal sighting range  

Directory of Open Access Journals (Sweden)

Full Text Available Empirical relationships to estimate vertical attenuation coefficient of photosynthetically available radiation (KPAR using Secchi disk, vertical black disk, and horizontal sighting ranges for San Quintín Bay, Baja California, were developed. Radiometric PAR profiles were used to calculate KPAR. Vertical (ZD and horizontal (HS sighting ranges were measured with white (Secchi depth or ZSD, HSW and black (ZBD, HSB targets. The empirical power models KPAR = 1.48 ZSD –1.16, KPAR = 0.87 ZBD –1.52, KPAR = 0.54 HSW –0.65 and KPAR = 0.53 HSB –0.92 were developed for the corresponding relationships. The parameters of these models are not significantly different from those of models developed for Punta Banda Estuary, another Baja California lagoon, with the exception of the one for the KPAR-HSW relationship. Also, parameters of the KPAR-ZSD model for San Quintín Bay and Punta Banda Estuary are not significantly different from those developed for coastal waters near Santa Barbara, California. A set of general models is proposed that may apply to coastal water bodies of northwestern Baja California and southern California (KPAR = 1.45 ZSD –1.10, KPAR = 0.92 ZBD –1.45, and KPAR = 0.70 HSB –1.10. While this approach may be universal, more data are needed to explore the variability of the parameters between different water bodies.

2005-01-01

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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)

27

San Marino.  

Science.gov (United States)

San Marino, an independent republic located in north central Italy, in 1983 had a population of 22,206 growing at an annual rate of .9%. The literacy rate is 97% and the infant mortality rate is 9.6/1000. The terrain is mountainous and the climate is moderate. According to local tradition, San Marino was founded by a Christian stonecutter in the 4th century A.D. as a refuge against religious persecution. Its recorded history began in the 9th century, and it has survived assaults on its independence by the papacy, the Malatesta lords of Rimini, Cesare Borgia, Napoleon, and Mussolini. An 1862 treaty with the newly formed Kingdom of Italy has been periodically renewed and amended. The present government is an alliance between the socialists and communists. San Marino has had its own statutes and governmental institutions since the 11th century. Legislative authority at present is vested in a 60-member unicameral parliament. Executive authority is exercised by the 11-member Congress of State, the members of which head the various administrative departments of the goverment. The posts are divided among the parties which form the coalition government. Judicial authority is partly exercised by Italian magistrates in civil and criminal cases. San Marino's policies are tied to Italy's and political organizations and labor unions active in Italy are also active in San Marino. Since World War II, there has been intense rivalry between 2 political coalitions, the Popular Alliance composed of the Christian Democratic Party and the Independent Social Democratic Party, and the Liberty Committee, coalition of the Communist Party and the Socialist Party. San Marino's gross domestic product was $137 million and its per capita income was $6290 in 1980. The principal economic activities are farming and livestock raising, along with some light manufacturing. Foreign transactions are dominated by tourism. The government derives most of its revenue from the sale of postage stamps to collectors around the world and from payment of an annual budget subsidy by the Italian government. Despite its close ties with Italy, San Marino has maintained its distinctive status for centuries. PMID:12178101

1985-02-01

28

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

29

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.

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

30

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

31

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).

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

2008-06-01

32

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).

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

33

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

34

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

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[Presence of Triatoma infestans in relation to various cultural patterns in a rural population of the Province of San Juan, Argentina].  

Science.gov (United States)

This paper reports results from a punctual epidemiological survey performed in San Juan, at Bermejo, a rural village located 100 km east from the provincial capital, in December 1987. The village had been rebuilt after almost complete destruction by an earthquake, in 1977. According to a census performed by local Primary Health Care Agents, there were 82 households, where 72 (88%) of them were inhabited, with a total human population of 198 people. Forty-eight from those inhabited dwellings (67%) were visited, and a general questionnaire was completed. Information gathered included, sex, age, working activity, number of people and domestic animals at the house, construction patterns of houses and outdoor premises, resting habits of animals, specially dogs, domestic use of insecticides and migration patterns of inhabitants. A timed collection of triatomines (man-hour method) was undertaken in 17 out of 48 of the visited households. Sampled triatomines were kept and classified by collection site, instar, and sex at the field. Species identification, microscopical examination of fecal contents to detect trypanosomes and blood-meals identification, were performed at the laboratory. Sixty-nine per cent (33/48) of the dwellings were "ranchos" with mud-brick ("adobe") and cane walls, roofs made of cane and mud dirt floors. The remainder were as follows: 11 (23%), partially improved houses and 4 (8%) had brick walls and were tiled or had zinc roofs. Data of migration patterns of local population were obtained in 31 (65%) out of 48 households. Seasonal movements within San Juan Province, mainly related to vintage were reported in 20/31 (65%) families.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:1843863

Valvé, S; Schweigmann, N; Petersen, R; García Piñeiro, C; Travaini, A; Vázquez, F; Solarz, N; Wisnivesky-Colli, C

1991-01-01

36

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.

2008-03-01

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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

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.

2013-12-01

39

/ 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

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

2012-12-01

40

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.

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

2013-04-01

 
 
 
 
41

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.

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

42

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.

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Technical evaluation of the susceptibility of safety-related systems to flooding caused by the failure of non-category 1 systems for the San Onofre Nuclear Power Plant, Unit 1  

International Nuclear Information System (INIS)

This report documents the technical evaluation of Southern California Edison Company's San Onofre Nuclear Power Plant, Unit 1, to determine whether the failure of any non-Category 1 (seismic) equipment could result in a condition, such as flooding, that might potentially adversely affect the performance of safety-related equipment required for the safe shutdown of the facility or to mitigate the consequences of an accident. Criteria developed by the US Nuclear Regulatory Commission were used to evaluate the acceptability of the existing protection as well as measures taken by Southern California Edison Company to minimize the danger of flooding and to protect safety-related equipment

44

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.

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

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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

46

O público e o privado na primeira LDB: a relação entre San Tiago Dantas e Anísio Teixeira / Public et privé dans la première LDB: la relation entre San Tiago Dantas et Anísio Teixeira / Public and private in the first LDB: the relationship between San Tiago Dantas and Anísio Teixeira / Público y privado en la primera LDB: la relación entre San Tiago Dantas y Anísio Teixeira  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese Este trabalho teve por objetivo analisar uma carta do educador Anísio Teixeira para o deputado San Tiago Dantas datada de julho de 1959, durante o período em que tramitava o projeto de Lei de Diretrizes e Bases da Educação Nacional. Trata-se de um material cujo conteúdo esclarece a discussão entre o [...] s dois interlocutores sobre os substitutivos de lei propostos pelo deputado Carlos Lacerda, à época da tramitação do citado projeto. Este trabalho concluiu que a relação entre San Tiago Dantas e Anísio Teixeira, em oposição ao que estava sendo proposto pelos referidos substitutivos, convergia na defesa da escola pública questionando a transferência de recursos públicos para a iniciativa privada. Abstract in spanish Este estudio tuvo como objetivo analizar una carta del Sr. Teixeira para o Sr. San Tiago Dantas, de fecha julio de 1959, durante el período de la hora de proceder a través del proyecto de Ley de Directrices y Bases de la Educación Nacional. Este es un material cuyo contenido clarifica el debate entr [...] e las dos partes sobre el proyecto sustitutivo propuesto por el diputado Carlos Lacerda, en el momento de la realización de dicho proyecto. Este estudio llegó a la conclusión de que la relación entre San Tiago Dantas y Teixeira, a diferencia de lo que se proponía por los sustitutos, se reunieron en la defensa de la escuela pública en duda la transferencia de recursos públicos a la empresa privada. Abstract in english This study aimed to analyze a letter from Mr. Anísio Teixeira to the congressman San Tiago Dantas, dated July 1959, during the period when proceeding through the draft Law of Guidelines and Bases of National Education. This is a material whose content clarifies the discussion between the two parties [...] on the substitute bill proposed by Carlos Lacerda, at the time of the conduct of the said project. This study concluded that the relationship between San Tiago Dantas and Teixeira, as opposed to what was being proposed by those substitutes, converged on the defense of public school questioning the transfer of public resources to private enterprise.

José Antonio Miranda, Sepulveda.

47

O público e o privado na primeira LDB: a relação entre San Tiago Dantas e Anísio Teixeira / Public et privé dans la première LDB: la relation entre San Tiago Dantas et Anísio Teixeira / Public and private in the first LDB: the relationship between San Tiago Dantas and Anísio Teixeira / Público y privado en la primera LDB: la relación entre San Tiago Dantas y Anísio Teixeira  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: Portuguese Abstract in portuguese Este trabalho teve por objetivo analisar uma carta do educador Anísio Teixeira para o deputado San Tiago Dantas datada de julho de 1959, durante o período em que tramitava o projeto de Lei de Diretrizes e Bases da Educação Nacional. Trata-se de um material cujo conteúdo esclarece a discussão entre o [...] s dois interlocutores sobre os substitutivos de lei propostos pelo deputado Carlos Lacerda, à época da tramitação do citado projeto. Este trabalho concluiu que a relação entre San Tiago Dantas e Anísio Teixeira, em oposição ao que estava sendo proposto pelos referidos substitutivos, convergia na defesa da escola pública questionando a transferência de recursos públicos para a iniciativa privada. Abstract in spanish Este estudio tuvo como objetivo analizar una carta del Sr. Teixeira para o Sr. San Tiago Dantas, de fecha julio de 1959, durante el período de la hora de proceder a través del proyecto de Ley de Directrices y Bases de la Educación Nacional. Este es un material cuyo contenido clarifica el debate entr [...] e las dos partes sobre el proyecto sustitutivo propuesto por el diputado Carlos Lacerda, en el momento de la realización de dicho proyecto. Este estudio llegó a la conclusión de que la relación entre San Tiago Dantas y Teixeira, a diferencia de lo que se proponía por los sustitutos, se reunieron en la defensa de la escuela pública en duda la transferencia de recursos públicos a la empresa privada. Abstract in english This study aimed to analyze a letter from Mr. Anísio Teixeira to the congressman San Tiago Dantas, dated July 1959, during the period when proceeding through the draft Law of Guidelines and Bases of National Education. This is a material whose content clarifies the discussion between the two parties [...] on the substitute bill proposed by Carlos Lacerda, at the time of the conduct of the said project. This study concluded that the relationship between San Tiago Dantas and Teixeira, as opposed to what was being proposed by those substitutes, converged on the defense of public school questioning the transfer of public resources to private enterprise.

José Antonio Miranda, Sepulveda.

2013-12-01

48

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.

49

Development of a method for studying non-linear phenomena in plasma; Mise au point d'une methode d'etude des phenomenes non lineaires dans un plasma  

Energy Technology Data Exchange (ETDEWEB)

The study of non-linear phenomena resulting from the interaction of powerful electro-magnetic waves with an electron gas is the basis of the p best methods for measuring the frequency of electronic collisions in the ionosphere. In laboratory plasma the appearance of these phenomena is connected with a powerful critical field. Although we have used a relatively low-power electromagnetic source, we have been able to develop a simple hyper-frequency method making it possible to study these phenomena to measure them and to put forward an elementary interpretation. An electromagnetic wave provided by a 1 watt klystron interacts with a HF discharge (25 MHz) in the volume of a TE{sub 111} cavity. The tube containing the discharge and the axis of the cylindrical cavity are co-linear with a magnetic field which can attain a value such that the wave frequency is equal to the gyromagnetic frequency of the electrons. The resonance curve for the cavity, which depends on the electronic density and the frequency of collisions, becomes increasingly dissymmetric as the absorbed power increases and as the gyromagnetic frequency of the electrons approaches that of the incident wave. By studying the resonance, it is possible to calculate the proportionality coefficients relating the density and collision frequency variations with the absorbed power. The experiments were carried out by causing the following to vary separately: the incident UHF power, the initial electronic density, the pressure of the neutral ambient gas, and the axial magnetic field. The variation in the electronic density as a function of the magnetic field for a high UHF power shows a resonance of dissymmetrical form, sometimes with a sharp peak in the neighbourhood of {omega}{sub H}. The possibility of applying these properties to the construction of practical devices, is under consideration. (author) [French] L'etude des phenomenes non lineaires dus a l'interaction d'ondes electro-magnetiques puissantes avec un gaz d'electrons est a la base des meilleures methodes de mesure des frequences de collisions electroniques dans l'ionosphere. Dans les plasmas de laboratoire l'apparition de ces phenomenes est liee a un champ critique de valeur elevee. Tout en n'utilisant qu'une source electromagnetique de puissance relativement faible, nous avons mis au point une methode hyperfrequence simple qui permet de mettre ces phenomenes en evidence, de les mesurer et d'en donner une interpretation elementaire. Une onde electromagnetique, fournie par un klystron de 1 W de puissance, interagit avec une decharge HF (25 MHz) dans le volume d'une cavite TE{sub 111}. Le tube contenant la decharge et l'axe de la cavite cylindrique sont colineaires a un champ magnetique pouvant atteindre une valeur telle que la frequence de l'onde soit egale a la frequence gyromagnetique des electrons. La courbe de resonance de la cavite, qui depend de la densite electronique et de la frequence des collisions, devient d'autant plus dissymetrique que la puissance absorbee est grande et que la frequence gyromagnetique des electrons est voisine de la frequence de l'onde incidente. L'etude de la resonance permet de calculer les coefficients de proportionnalite qui relient les variations de la densite et de la frequence de collisions a la puissance absorbee. Les experiences ont ete faites en faisant varier separement: la puissance UHF incidente, la densite electronique initiale, la pression du gaz neutre ambiant, ainsi que le champ magnetique axial. La variation de la densite electronique en fonction du champ magnetique pour une puissance UHF forte, montre une resonance de forme dissymetrique avec quelquefois un pic aigu, au voisinage de {omega}{sub H}. L'application eventuelle des proprietes mises en evidence a la realisation de dispositifs pratiques est envisagee. (auteur)

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

1965-03-01

50

San Diego Zoo: Kid Territory  

Science.gov (United States)

This San Diego Zoo website is absolutely packed with fun and informative stuff for kids, and features not only the residents of the zoo, but also the people who work there. Read All About It offers a look at how the San Diego Zoo began, why we give scientific names to animals, why animal enrichment is important, and much more. Science in Action offers simple experiments to do at home or in the classroom, like exploring what life would be like without an opposable thumb (with tape, not via amputation). The website also provides interesting essays on zoo-related careers, as well as cool multimedia games, animal-themed recipes, and loads of other great features.

51

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

52

San Juan Uchucuanicu: évolution historique  

Directory of Open Access Journals (Sweden)

Full Text Available La communauté de San Juan est reconnue depuis 1939. Une première partie concerne l?organisation de la reducción de San Juan vers le milieu du XVIe siècle. Le poids fiscal s?exerce durement sur le village et la crise est générale dans toute la vallée du Chancay au XVIIe. siècle. La christianisation des habitants est définitive au milieu de ce même siècle. C?est vers la fin du XVIIe siècle et durant tout le XVIIIe que se multiplient les conflits entre San Juan et les villages voisins liés aux terrains de pâture et à la possession de l?eau. La deuxième partie du travail concerne les rapports de la communauté de San Juan avec le Pérou contemporain : contrainte fiscale toujours très lourde durant la fin de l?époque coloniale, exactions des militaires juste avant l?indépendance. La période républicaine voit toujours les conflits avec les villages voisins mais aussi la naissance de familles qui cherchent à retirer le maximum de la communauté. Les terres sont divisées et attribuées : la détérioration de l?organisation communale traditionnelle est manifeste. L4es conflits se multiplient entre petits propriétaires, mais aussi avec les haciendas voisines : c?est l?apparition d?une véritable lutte de classes. La situation actuelle est incertaine, le poids de l?économie marchande se développe avec l?exode des jeunes. Que sera la communauté San Juan à la fin de ce siècle? La comunidad de San Juan está reconocida desde 1939. La primera parte concierne a la organización de la 'reducción' de San Juan hacia mediados del siglo XVI. El peso fiscal se ejerce duramente sobre el pueblo y en el siglo XVII la crisis es general en todo el valle de Chancay. Hacia mediados del mismo siglo la cristianización de los habitantes es definitiva. Es hacia fines del siglo XVII y durante todo el siglo XVIII que se multiplican los conflictos entre San Juan y los pueblos vecinos, los que están relacionados con los terrenos de pastoreo y la posesión del agua. La segunda parte del trabajo concierne a las relaciones de la comunidad de San Juan con el Perú contemporáneo: obligaciones fiscales cada vez más pesadas hacia fines de la época colonial, exacciones de los militares justamente antes de la independencia. El período republicano ve siempre los conflictos entre los pueblos vecinos pero igualmente el nacimiento de familias que procuran sacar el máximo de la comunidad. Las tierras son divididas y atribuidas: el deterioro de la organización comunal tradicional se pone de manifiesto. Se multiplican los conflictos entre pequeños propietarios, pero también con las haciendas vecinas: es la aparición de una verdadera lucha de clases. La situación actual es incierta, el peso de la economía comercial se desarrolla con el éxodo de los jóvenes. ¿Que será de la comunidad de San Juan a fines de este siglo? San Juan community has been recognized since 1939. In the first part, we will show' the organization of San Juan's reducción at the middle of the XVI century. The fiscal burden on the village was hard and this crisis was general all over the valley of Chancay during the XVII century. Christianisation of the inhabitants was completed in the middle of this same century. It is only at the end of this century and along all the XVII that the conflicts between San Juan and the neighboring villages were multiplied, tied to pasture lands and water possession In the second part, we will show the relations of San Juan with the contemporary Peru: always very hard fiscal constraint at the end of the colonial time and military exactions till the independence. Along the republican period, the conflicts with the neighboring villages persisted but there were also arising families who were trying to take the maximum of the community. Lands were divided and attributed, deterioration of traditional communal organization was visible. Conflicts between small landlords and neighboring haciendas were multiplied A real class struggle appeared. The actual situation seems uncertain but the trading economy b

1975-01-01

53

Régner sans régner  

Directory of Open Access Journals (Sweden)

Full Text Available Les problèmes, dus au genre, d’une régente et d’une reine héritière. Mais aussi comment ils furent surmontés. Dépossédée de fait par la noblesse de la tutelle de son jeune frère, Henri Ier de Castille (1214-1217, Bérengère, devenue, à la suite de la mort accidentelle du roi, héritière du trône, transmet immédiatement la couronne à son fils aîné Ferdinand. Elle ne laissera pas pour autant d’exercer une influence majeure sur le gouvernement du royaume, régnant sans régner… Mais comment se faire une opinion un peu exacte de Bérengère, de son rôle et de ses relations avec Ferdinand III à travers les témoignages partisans et contrastés des trois historiens du règne : Luc de Tuy, Jean d’Osma et Rodrigue de Tolède ?Los problemas, debidos al género, de una regenta y de una reina heredera. Pero también cómo los superó. Desposeída por la nobleza de la tutela de su joven hermano Enrique I (1214-1217, Berenguela, heredera del trono a la muerte del rey, transmite inmediatamente la corona a su hijo mayor, Fernando. No dejará por eso de influir en el gobierno del reino, reinando sin reinar… Pero ¿cómo hacerse una opinión algo exacta de Berenguela de Castilla, de su papel político y de sus relaciones con Fernando III a través de los testimonios partidarios y contradictorios de los tres historiadores del reinado : Lucas de Túy, Juan de Osma y Rodrigo de Toledo ?

Georges Martin

2006-12-01

54

The Relative Effects of Wave Climatology and Tidal Currents on Beach Processes Adjacent to a Major Tidal Inlet, Ocean Beach, San Francisco, California  

Science.gov (United States)

Identifying the processes that control the morphological evolution of beaches adjacent to tidal inlets is challenging due to the complex interactions between waves, currents, and bathymetry, each with high spatial and temporal variability. In the shadow of the large ebb tidal delta at the mouth of San Francisco Bay, CA, the wave refraction patterns at Ocean Beach are complex and the effects of the offshore wave climate on beach and nearshore morphology cannot be assessed simply by analyzing data from an offshore wave buoy. Instead, the United States Geological Survey has employed a multi-faceted approach that links wave data with numerical modeling, periodic three- dimensional topographic beach surveys, cross shore bathymetric surveys using personal watercraft, onshore grain-size analysis using a bed sediment camera, and a multi-beam survey covering the entire mouth of San Francisco Bay. Initial analyses demonstrate that the spatial distribution of wave energy and direction controls short-term (i.e. days to years) beach evolution, including the location of erosional "hot spots." These conclusions are supported by topographic LIDAR surveys that covered the study area in 1997, 1998 and 2002, bracketing the last major El Niño/ Southern Oscillation cycles. In this study, SWAN (Simulating WAves Nearshore) modeling is combined with high resolution bathymetry and high resolution beach surveys to quantify short-term morphological change and to provide links to nearshore processes. Initial SWAN results show a focusing of wave energy at the location of an erosional hot-spot on the southern end of Ocean Beach during the prevailing northwest swell. During El Niño winters, swell out of the west and southwest dominates the region, and although the wave energy is focused further to the north on Ocean Beach, the oblique wave approach sets up a strong northerly littoral drift, thereby starving the southern end of sediment, leaving it increasingly vulnerable to wave attack when the typical northwest swell returns. Over longer time periods (i.e. decades), tidal processes emerge as the dominant control on coastal evolution is this region, as changes in sediment supply and depositional patterns exert a strong influence on the ebb tidal delta volume and morphology. The tidal delta, in turn, strongly influences wave shielding, refraction, and focusing patterns on adjacent beaches. An accurate assessment of the interaction between wave and tidal processes is crucial for evaluating coastal management options in an area that includes the annual dredging and disposal of ship channel sediment and an erosional hot spot that is posing a major threat to local infrastructure.

Barnard, P. L.; Hanes, D. M.; Ruggiero, P.

2004-12-01

55

ABUNDANCE OF THE EXCAVATING SPONGE CLIONA DELITRIX IN RELATION TO SEWAGE DISCHARGE AT SAN ANDRÉS ISLAND, SW CARIBBEAN, COLOMBIA / ABUNDANCIA DE LA ESPONJA EXCAVADORA CLIONA DELITRIX EN RELACIÓN CON DESCARGAS DE AGUAS SERVIDAS EN LA ISLA DE SAN ANDRÉS, CARIBE SUROCCIDENTAL, COLOMBIA  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: English Abstract in spanish Se conoce que la esponja incrustante y excavadora del Caribe Cliona delitrix puede aumentar su abundancia en las cercanías de fuentes de aguas servidas. Para determinar si su notable abundancia actual en los arrecifes de sotavento de la Isla de San Andrés (Caribe SO, Colombia) está relacionada con l [...] a contaminación orgánica generada por las descargas locales de aguas servidas, se obtuvieron datos cuantitativos de densidad y cobertura de esta esponja y otros componentes bentónicos, en transectos de banda y línea en siete estaciones a lo largo de la terraza somera (5- 10 m de profundidad). Se obtuvo mucus de coral para cuantificar la bacteria Escherichia coli, como indicador de la influencia de las plumas de aguas servidas en la biota bentónica. Una regresión potencial negativa entre la cantidad de E. coli en mucus de coral y la distancia del tubo principal de salida de aguas servidas, demostró que las bacterias provienen de los desechos domésticos. Aunque hubo conteos significativos de E. coli solamente hasta 1-2 km de las fuentes de aguas servidas, la influencia general de estas aguas puede extenderse mucho más lejos, ya que se encontraron abundancias moderadas de C. delitrix a lo largo de la terraza somera occidental de San Andrés, aparentemente asociadas con el enriquecimiento general de nutrientes de las aguas servidas. Las abundancias de C. delitrix fueron menores en el suroccidente, lejos de la influencia de aguas servidas, e incrementaron en general hacia las fuentes, pero disminuyeron cerca del tubo de salida principal. Muy cerca de las fuentes de aguas servidas, cualquier efecto positivo en la esponja producido por un aumento en la materia orgánica en suspensión, probablemente es neutralizado por el efecto negativo que el exceso de sedimentación tiene sobre la esponja misma y sobre la cantidad y calidad del sustrato disponible para la colonización. Abstract in english It is known that the encrusting and excavating Caribbean sponge Cliona delitrix may increase its abundance near sources of sewage. To ascertain whether its current conspicuousness in leeward reefs of San Andrés Island (SW Caribbean, Colombia) is related to organic pollution from local raw sewage dis [...] charges, quantitative data on density and cover of this sponge and other benthic components was obtained from belt and line transects at seven stations along the shallow (5-10 m deep) terrace. Coral mucus was sampled to quantify Escherichia coli bacteria, as an approximate indicator of sewage plume influence on benthic biota. A negative multiplicative regression between amount of E. coli in coral mucus and distance from the main raw sewage outlet demonstrated the domestic-wastes origin of the bacteria. Whereas significant E. coli counts occurred only up to 1-2 km from sewage sources, overall sewage influence may extend further as moderate C. delitrix abundances occurred throughout the West shallow terrace of San Andrés, apparently associated to the overall nutrient enrichment from sewage. C. delitrix abundances were lower in the Southwest, farthest from sewage influence, and generally increased towards sewage sources, but decreased near the main sewage outlet. Close to sewage sources, any positive effect on the sponge brought about by the increase in suspended organic matter is probably outweighed by the negative effect that excessive sedimentation has on the sponge itself, and on the quantity and quality of substratum available for settlement.

Andia, Chaves-Fonnegra; Sven, Zea; Martha L., Gómez.

56

Organochlorine and PBDE concentrations in relation to cytochrome P450 activity in livers of Forster's terns (Sterna forsteri) and Caspian terns (Hydroprogne caspia), in San Francisco Bay, California.  

Science.gov (United States)

We measured halogenated organic contaminants (HOCs) [polybrominated diphenyl ethers (PBDEs), polychlorinated biphenyls (PCBs), and dichloro-diphenyl-trichloroethane (DDT)] and P450 [e.g., ethoxyresorufin-O-dealkylase (EROD)] stress in livers from Caspian tern (Hydroprogne caspia) adults and Forster's tern (Sterna forsteri) adults and chicks in San Francisco Bay (SFB). Penta BDEs and tetra PBDEs composed 46-66% of SigmaPBDE in terns. PCB homologues di, tri, penta, hexa, and hepta composed 93-95% of SigmaPCBs and p'p-DDE composed 82-98% of all SigmaDDTs. We found similar concentrations of SigmaPBDEs [mean micrograms per gram wet weight (ww) +/- standard error = 0.4 +/- 0.1], SigmaPCBs (5.9 +/- 1.6), and SigmaDDTs (0.6 +/- 0.1) among species, sexes, and regions. However, concentrations were higher in Forster's tern adults than chicks (SigmaPBDEs = 0.4 +/- 0.1 and 0.1 +/- 0.1; SigmaPCBs = 7.08 +/- 2.4 and 2.4 +/- 1.4; SigmaDDTs = 0.5 +/- 0.1 and 0.1 +/- 0.1; respectively), and there was a nonsignificant trend of elevated SigmaPBDEs and SigmaPCBs for adult Forster's terns in the Central South Bay and Lower South Bay portions of SFB. Combined Forster's tern and Caspian tern SigmaDDTs bioaccumulated similarly to selenium, but not mercury, and there was a nonsignificant but positive trend for SigmaPBDEs and SigmaPCBs bioaccumulation with mercury. P450 protein activity was higher in adult Forster's terns than Caspian terns, higher in Central South Bay than in Lower South Bay, and higher in adult Forster's terns than in chicks. PMID:19653030

Herring, Garth; Ackerman, Joshua T; Eagles-Smith, Collin A; Adelsbach, Terrence L; Melancon, Mark J; Stebbins, Katie R; Hoffman, David J

2010-04-01

57

Mercury concentrations in blood and feathers of prebreeding Forster's terns in relation to space use of San Francisco Bay, California, USA, habitats  

Science.gov (United States)

We examined mercury concentrations and space use of prebreeding Forster's terns (Sterna forsteri) in San Francisco Bay, California, USA, to assess factors influencing mercury levels in piscivorous birds. In 2005 and 2006, we collected blood and feathers from 122 Forster's terns and radio-marked and tracked 72 terns to determine locations of dietary mercury uptake. Capture site and capture date were the most important factors explaining variation in blood mercury concentrations (geometric mean ?? standard error: 1.09 ?? 0.89 ??g/g wet wt), followed by sex and year. Accordingly, radiotelemetry data revealed that Forster's terns generally remained near their site of capture and foraged in nearby salt ponds, managed and tidal marshes, and tidal flats. In contrast, capture site and capture date were not important factors explaining variation in feather mercury concentrations, probably because feathers were grown on their wintering grounds several months prior to our sampling. Instead, sex and year were the most important factors explaining mercury concentrations in breast feathers (9.57 ?? 8.23 ??g/g fresh wt), and sex was the most important factor for head feathers (6.94 ?? 7.04 ??g/g fresh wt). Overall, 13 and 22% of prebreeding Forster's terns were estimated to be at high risk for deleterious effects due to mercury concentrations in blood (>3.0 ??g/g wet wt) and feathers (>20.0 ??g/g fresh wt), respectively. Breeding terns are likely to be even more at risk because blood mercury concentrations more than tripled during the 45-d prebreeding time period. These data illustrate the importance of space use and tissue type in interpreting mercury concentrations in birds. ?? 2008 SETAC.

Ackerman, J.T.; Eagles-Smith, C. A.; Takekawa, J.Y.; Bluso, J.D.; Adelsbach, T.L.

2008-01-01

58

78 FR 13748 - Environmental Impact Statement for the East San Fernando Valley Transit Corridor Project, Los...  

Science.gov (United States)

...Environmental Impact Statement for the East San Fernando Valley Transit Corridor Project, Los...transit improvements in the East San Fernando Valley Transit Project Corridor in Los...related infrastructure in the eastern San Fernando Valley. The EIS will evaluate new...

2013-02-28

59

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.

60

Low level radiation: how does the linear without threshold model provide the safety of Canadian; Faible niveau de rayonnement: comment le modele lineaire sans seuil assure la securite des Canadiens  

Energy Technology Data Exchange (ETDEWEB)

The linear without threshold model is a model of risk used worldwide by the most of health organisms of nuclear regulation in order to establish dose limits for workers and public. It is in the heart of the approach adopted by the Canadian commission of nuclear safety (C.C.S.N.) in matter of radiation protection. The linear without threshold model presumes reasonably it exists a direct link between radiation exposure and cancer rate. It does not exist scientific evidence that chronicle exposure to radiation doses under 100 milli sievert (mSv) leads harmful effects on health. Several scientific reports highlighted scientific evidences that seem indicate a low level of radiation is less harmful than the linear without threshold predicts. As the linear without threshold model presumes that any radiation exposure brings risks, the ALARA principle obliges the licensees to get the radiation exposure at the lowest reasonably achievable level, social and economical factors taken into account. ALARA principle constitutes a basic principle in the C.C.S.N. approach in matter of radiation protection; On the radiation protection plan, C.C.S.N. gets a careful approach that allows to provide health and safety of Canadian people and the protection of their environment. (N.C.)

Anon.

2010-07-01

 
 
 
 
61

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

62

30 January 2012 - Ecuadorian Ambassador Gallegos Chiriboga, Permanent Representative to the United Nations Office and other International Organisations at Geneva and San Francisco de Quito University Vice Chancellor C. Montùfar visiting CMS surface facilities and underground experimental area with CMS Collaboration L. Sulak and Collaboration Deputy Spokesperson T. Camporesi, throughout accompanied by Head of International Relations F. Pauss.  

CERN Multimedia

30 January 2012 - Ecuadorian Ambassador Gallegos Chiriboga, Permanent Representative to the United Nations Office and other International Organisations at Geneva and San Francisco de Quito University Vice Chancellor C. Montùfar visiting CMS surface facilities and underground experimental area with CMS Collaboration L. Sulak and Collaboration Deputy Spokesperson T. Camporesi, throughout accompanied by Head of International Relations F. Pauss.

Michael Hoch

2012-01-01

63

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  

Directory of Open Access Journals (Sweden)

Full Text Available 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 other MDG targets. During its work in Chad, Sierra Leone and Mali in the period 2004 to 2008, Médecins Sans Frontières showed that it was possible to significantly improve access to effective malaria treatment through: i the removal of health centre level user fees for essential healthcare for vulnerable population groups, ii the introduction of free community based treatment for children using malaria village workers to diagnose and treat simple malaria in communities where geographical and financial barriers limited access to effective malaria care, iii the improved diagnosis and treatment of malaria using rapid diagnosis tests and artemisinin based combination therapy, at both health facilities and in the community. This paper describes and discusses these strategies and their related impact.

Nadine de Lamotte

2011-03-01

64

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

65

Study of the frequency modulation of various U.H.F. signals occurring in a linear electron accelerator; Etude de la modulation de frequence de divers signaux U.H.F. existant dans un accelerateur lineaire d'electrons  

Energy Technology Data Exchange (ETDEWEB)

This paper contains a digest of a series of studies on the frequency modulation of U.H.F. fields and signals associated with the linear electron accelerator at Saclay. We first consider the frequency modulation of a U. H. F. pulse before its injection into an accelerating structure and after its subsequent propagation when no accelerated electrons are present. We then apply a similar analysis to the frequency modulation due to the direct interaction of the electron beam itself, and the accelerating U.H.F. fields. Finally we consider the phase modulation of the elementary electron packet itself. This phase modulation can be correctly interpreted by considering the dynamics of the electron beam as such. This analysis moreover, gives a correct interpretation of the evolution of the phase modulation with time, as the elementary electron packets move along with the sinusoidal U.H.F. accelerating fields. (authors) [French] Cet article resume les etudes faites sur l'accelerateur lineaire d'electrons de Saclay a propos de la modulation de frequence des divers signaux U.H.F. presents autour de l'accelerateur. On etudie d'abord la modulation de frequence des impulsions U.H.F. entrant sur la structure acceleratrice ou transmises par cette structure en l'absence de faisceau d'electrons acceleres. On analyse ensuite la modulation de frequence resultant de l'interaction d'une de ces ondes avec le faisceau d'electrons acceleres. On etudie enfin, la modulation de phase des divers paquets elementaires constituant une impulsion d'electrons acceleres. On montre comment cette modulation de phase peut s'expliquer par des considerations sur la dynamique du faisceau et conduire a une representation dans les divers cas possibles de l'evolution de la phase d'accrochage des electrons sur l'onde sinusoidale progressive de champ accelerateur. (auteurs)

Bergere, R.; Veyssiere, A.; Daujat, P. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

1966-06-01

66

Examination of spotted sand bass (Paralabrax maculatofasciatus) pollutant bioaccumulation in San Diego Bay, San Diego, California.  

Science.gov (United States)

The spotted sand bass (Paralabrax maculatofasciatus) is an important recreational sport and subsistence food fish within San Diego Bay, a large industrialized harbor in San Diego, California. Despite this importance, few studies examining the species life history relative to pollutant tissue concentrations and the consumptive fishery exist. This study utilized data from three independent spotted sand bass studies from 1989 to 2002 to investigate PCB, DDT, and mercury tissue concentrations relative to spotted sand bass age and growth in San Diego Bay, with subsequent comparisons to published pollutant advisory levels and fishery regulations for recreational and subsistence consumption of the species. Subsequent analysis focused on examining temporal and spatial differences for different regions of San Diego Bay. Study results for growth confirmed previous work, finding the species to exhibit highly asymptotic growth, making tissue pollutant concentrations at initial take size difficult if not impossible to predict. This was corroborated by independent tissue concentration results for mercury, which found no relationship between fish size and pollutant bioaccumulation observed. However, a positive though highly variable relationship was observed between fish size and PCB tissue concentration. Despite these findings, a significant proportion of fish exhibited pollutant levels above recommended state recreational angler consumption advisory levels for PCBs and mercury, especially for fish above the minimum take size, making the necessity of at-size predictions less critical. Lastly, no difference in tissue concentration was found temporally or spatially within San Diego Bay. PMID:24282672

Loflen, Chad L

2013-01-01

67

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

Mónica, Hurtado; Giovanni Andrés, Hernández-Salazar.

68

The San Andreas Fault  

Science.gov (United States)

This United States Geological Survey (USGS) publication discusses the San Andreas Fault in California; specifically what has caused the fault, where it is located, surface features that characterize it, and movement that has occurred. General earthquake information includes an explanation of what earthquakes are, and earthquake magnitude versus intensity. Earthquakes that have occurred along the fault are covered, as well as where the next large one may occur and what can be done about large earthquakes in general.

Schulz, Sandra; Wallace, Robert

69

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

Science.gov (United States)

...Special Local Regulation; Christmas Boat Parade, San Juan Harbor; San Juan, PR AGENCY: Coast Guard, DHS. ACTION: Notice...establish a special local regulation on the waters of San Juan Harbor in San Juan, Puerto Rico during the...

2013-06-13

70

Lahar-hazard zonation for San Miguel volcano, El Salvador  

Science.gov (United States)

San Miguel volcano, also known as Chaparrastique, is one of many volcanoes along the volcanic arc in El Salvador. The volcano, located in the eastern part of the country, rises to an altitude of about 2130 meters and towers above the communities of San Miguel, El Transito, San Rafael Oriente, and San Jorge. In addition to the larger communities that surround the volcano, several smaller communities and coffee plantations are located on or around the flanks of the volcano, and the PanAmerican and coastal highways cross the lowermost northern and southern flanks of the volcano. The population density around San Miguel volcano coupled with the proximity of major transportation routes increases the risk that even small volcano-related events, like landslides or eruptions, may have significant impact on people and infrastructure. San Miguel volcano is one of the most active volcanoes in El Salvador; it has erupted at least 29 times since 1699. Historical eruptions of the volcano consisted mainly of relatively quiescent emplacement of lava flows or minor explosions that generated modest tephra falls (erupted fragments of microscopic ash to meter sized blocks that are dispersed into the atmosphere and fall to the ground). Little is known, however, about prehistoric eruptions of the volcano. Chemical analyses of prehistoric lava flows and thin tephra falls from San Miguel volcano indicate that the volcano is composed dominantly of basalt (rock having silica content

Major, J.J.; Schilling, S.P.; Pullinger, C.R.; Escobar, C.D.; Chesner, C.A.; Howell, M.M.

2001-01-01

71

Geophysical Properties Within the San Andreas Fault Zone at the San Andreas Fault Observatory at Depth (SAFOD) and Their Relationships to Rock Properties and Fault Zone Structure  

Digital Repository Infrastructure Vision for European Research (DRIVER)

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...

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

2010-01-01

72

Investigation of Quaternary slip rates along the Banning strand of the southern San Andreas Fault near San Gorgonio Pass  

Science.gov (United States)

Present-day Pacific-North American relative plate motion in southern California is shared primarily between the San Jacinto and San Andreas faults. At the north end of the Coachella Valley, the San Andreas fault splits into the Banning and Mission Creek strands, which are sub-parallel to each other within the Indio Hills. Northwest of the Indio Hills, the Mission Creek fault diverges from the Banning and continues northwest toward the southeastern San Bernardino Mountains, but loses surface expression beneath Quaternary alluvial deposits in Morongo Wash. The Banning fault, upon exiting the Indio Hills, is deflected toward the west and transitions into a structurally complex fault zone at San Gorgonio Pass, where it is delineated by thrust scarps in Holocene alluvium. The slip rates of the Banning and Mission Creek fault strands northwest of the Indio Hills and southeast of San Gorgonio Pass are presently unconstrained, but understanding how slip is partitioned between these two strands is critical to southern California earthquake forecasting efforts. Here we present preliminary slip rate data for the Banning fault ~2 km southeast of San Gorgonio Pass at Devers Hill. Using the B4 LiDAR as a base, we have mapped the extents of three truncated and offset alluvial fan deposits, which we have differentiated based on both field and remote (LiDAR- and air photo-based) observations of texture: in particular, the distribution of different clast sizes, pavement and soil development, and color and appearance. To confirm across-fault correlation of the displaced deposits, we have measured 26 cosmogenic Be-10 ages from boulders and cobble samples taken from each of the three fan surfaces on both sides of the fault. One debris flow deposit (Q2a) has been dated to ~80 ka, and appears to be offset 1.6-2.2 km, though confirming this reconstruction will depend on future excavations and uranium-series dating of soil carbonate. A second debris flow deposit (Q2b), for which ages are pending, has been displaced 1-1.6 km. Together, these measurements suggest a late Quaternary slip rate for the Banning strand of the San Andreas fault of about 12-24 mm/yr. Our preliminary slip rate measurement for the Banning strand just southeast of San Gorgonio Pass is consistent with the slip rate of the San Bernardino section of the San Andreas fault to the northwest, and suggests that averaged over late Quaternary timescales (~80 ka), displacement along the San Andreas south of San Gorgonio Pass may be more focused on the Banning strand than the Mission Creek strand.

Gold, P. O.; Behr, W. M.; Rood, D.; Kendrick, K. J.; Rockwell, T. K.; Sharp, W. D.

2013-12-01

73

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.

Ana, Mestre.

74

Distribución de los suelos en función del relieve y de la neotectónica en la región sureste de la provincia de San Juan Distribution of soils in relation to relief and neotectonic activity within the tectonic depression of the Tulum valley, in the south-eastern sector of San Juan province  

Directory of Open Access Journals (Sweden)

Full Text Available Se analizan las relaciones suelo-paisaje-neotectónica en la depresión tectónica conocida como valle del Tulum, en el sector sudeste de la provincia de San Juan. El área de estudio se encuentra localizada en la intersección del paralelo 31°30' S y el meridiano 68°29'O. Se reconocen tres principales unidades de relieve, A abanico aluvial; B sector de transición entre A y C, y C planicie aluvial del río San Juan. Consecuentemente con las diferencias de relieves y materiales originarios, estas áreas presentan específicas asociaciones de suelos correspondientes a los Complejos El Salado, Médano de Oro y Ramón Franco respectivamente. Los relieves A y B se caracterizan por suelos Entisoles, mientras que el C por los Aridisoles. Asimismo, la actividad neotectónica, en la región, ha contribuido favorablemente en la formación de los suelos del Complejo Médano de Oro pertenecientes al Suborden Aquents.Soil-landscape-neotectonic relationships were studied in the south-eastern sector of San Juan province, Argentina, (31°30' S, 68°29' W. Three different area types were distinguished: A alluvial fans, B transitional area between A and C, and C alluvial plain of San Juan river. As a result of the different landscape-relief features and parent materials, the three areas have different soil associations within the complexes, El Salado, Médano de Oro and Ramón Franco, respectively. Areas A and B are characterized by entisol order soils sequences, whereas area C has aridisol order soil. The neotectonic activity in the region has contributed favourably to the formation soils in the Médano de Oro Complex, of the Aquents suborder.

G.M. Suvires

2004-09-01

75

Magnetotelluric Data, San Luis Valley, Colorado  

Science.gov (United States)

The San Luis Valley region population is growing. Water shortfalls could have serious consequences. Future growth and land management in the region depend on accurate assessment and protection of the region?s ground-water resources. An important issue in managing the ground-water resources is a better understanding of the hydrogeology of the Santa Fe Group and the nature of the sedimentary deposits that fill the Rio Grande rift, which contain the principal ground-water aquifers. The shallow unconfined aquifer and the deeper confined Santa Fe Group aquifer in the San Luis Basin are the main sources of municipal water for the region. The U.S. Geological Survey (USGS) is conducting a series of multidisciplinary studies of the San Luis Basin located in southern Colorado. Detailed geologic mapping, high-resolution airborne magnetic surveys, gravity surveys, an electromagnetic survey (called magnetotellurics, or MT), and hydrologic and lithologic data are being used to better understand the aquifers. The MT survey primary goal is to map changes in electrical resistivity with depth that are related to differences in rock types. These various rock types help control the properties of aquifers. This report does not include any data interpretation. Its purpose is to release the MT data acquired at 24 stations. Two of the stations were collected near Santa Fe, New Mexico, near deep wildcat wells. Well logs from those wells will help tie future interpretations of this data with geologic units from the Santa Fe Group sediments to Precambrian basement.

Rodriguez, Brian D.; Williams, Jackie M.

2008-01-01

76

Magnetotelluric Data, Southern San Luis Valley, Colorado  

Science.gov (United States)

Introduction The population of the San Luis Valley region is growing rapidly. The shallow unconfined and the deeper confined Santa Fe Group aquifer in the San Luis Basin is the main sources of municipal water for the region. Water shortfalls could have serious consequences. Future growth and land management in the region depend on accurate assessment and protection of the region's ground-water resources. An important issue in managing the ground-water resources is a better understanding of the hydrogeology of the Santa Fe Group and the nature of the sedimentary deposits that fill the Rio Grande rift, which contain the principal ground-water aquifers. The U.S. Geological Survey (USGS) is conducting a series of multidisciplinary studies of the San Luis Basin located in southern Colorado. Detailed geologic mapping, high-resolution airborne magnetic surveys, gravity surveys, an electromagnetic survey, called magnetotellurics (MT), and hydrologic and lithologic data are being used to better understand the aquifer systems. The primary goal of the MT survey is to map changes in electrical resistivity with depth that are related to differences in rock type. These various rock types help control the properties of aquifers in the region. This report does not include any interpretation of the data. Its purpose is to release the MT data acquired at the 22 stations shown in figure 1.

Williams, Jackie M.; Rodriguez, Brian D.

2007-01-01

77

New evidence on the state of stress of the san andreas fault system.  

Science.gov (United States)

Contemporary in situ tectonic stress indicators along the San Andreas fault system in central California show northeast-directed horizontal compression that is nearly perpendicular to the strike of the fault. Such compression explains recent uplift of the Coast Ranges and the numerous active reverse faults and folds that trend nearly parallel to the San Andreas and that are otherwise unexplainable in terms of strike-slip deformation. Fault-normal crustal compression in central California is proposed to result from the extremely low shear strength of the San Andreas and the slightly convergent relative motion between the Pacific and North American plates. Preliminary in situ stress data from the Cajon Pass scientific drill hole (located 3.6 kilometers northeast of the San Andreas in southern California near San Bernardino, California) are also consistent with a weak fault, as they show no right-lateral shear stress at approximately 2-kilometer depth on planes parallel to the San Andreas fault. PMID:17839366

Zoback, M D; Zoback, M L; Mount, V S; Suppe, J; Eaton, J P; Healy, J H; Oppenheimer, D; Reasenberg, P; Jones, L; Raleigh, C B; Wong, I G; Scotti, O; Wentworth, C

1987-11-20

78

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".

79

Perspective View, San Andreas Fault  

Science.gov (United States)

The prominent linear feature straight down the center of this perspective view is California's famous San Andreas Fault. The image, created with data from NASA's Shuttle Radar Topography Mission (SRTM), 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, Calif., 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. Two large mountain ranges are visible, the San Gabriel Mountains on the left and the Tehachapi Mountains in the upper right. Another fault, the Garlock Fault lies at the base of the Tehachapis; the San Andreas and the Garlock Faults meet in the center distance near the town of Gorman. In the distance, over the Tehachapi Mountains is California's Central Valley. Along the foothills in the right hand part of the image is the Antelope Valley, including the Antelope Valley California Poppy Reserve. The data used to create this image were acquired by SRTM aboard the Space Shuttle Endeavour, launched on February 11, 2000.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.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. 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: 34.70 deg. North lat., 118.57 deg. West lon. Orientation: Looking Northwest Original Data Resolution: SRTM and Landsat: 30 meters (99 feet) Date Acquired: February 16, 2000

2000-01-01

80

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.

 
 
 
 
81

Future Trends in San Diego: Population, Income, Employment, Post College Wages and Enrollment.  

Science.gov (United States)

This report contains forecasted data for San Diego through the year 2015 and examines changes that have taken place over the past fifty years. Historically, San Diego population growth rates have been relatively high compared with the rest of the nation. Between 1998 and 2015, the population will not only become larger, it will become more…

Barnes, Randy; Armstrong, William B.; Bersentes, Gina; Turingan, Maria

82

Manifestaciones uraniferas de la pegmatita 'Las Cuevas', provincia de San Luis, Republica Argentina. (Uranium occurrences in the pegmatite 'Las Cuevas', province of San Luis, Argentine Republic).  

Science.gov (United States)

Mineral associations found in an uranium deposit of Sierras Pampeanas, San Luis, are considered in these papers. Damourite stands out among the uranium minerals related to uraninite and coffinite. Pyrite, marcasite and other sulphides are found together w...

C. O. Daziano, A. C. Karlsson, R. Ayala

1993-01-01

83

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

84

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)

85

78 FR 29289 - Safety Zone; Big Bay Boom, San Diego Bay, San Diego, CA  

Science.gov (United States)

...RIN 1625-AA00 Safety Zone; Big Bay Boom, San Diego Bay, San Diego, CA AGENCY...Bay for the Port of San Diego Big Bay Boom Fireworks display from 8:45 p.m. to...Diego Bay for the Port of San Diego Big Bay Boom Independence Day Fireworks Display....

2013-05-20

86

33 CFR 165.754 - Safety Zone: San Juan Harbor, San Juan, PR.  

Science.gov (United States)

...2010-07-01 2010-07-01 false Safety Zone: San Juan Harbor, San Juan, PR. 165.754 Section 165.754 Navigation...Coast Guard District § 165.754 Safety Zone: San Juan Harbor, San Juan, PR. (a) Regulated...

2010-07-01

87

33 CFR 165.754 - Safety Zone: San Juan Harbor, San Juan, PR.  

Science.gov (United States)

...2010-07-01 false Safety Zone: San Juan Harbor, San Juan, PR. 165.754 Section 165.754 Navigation and Navigable Waters...District § 165.754 Safety Zone: San Juan Harbor, San Juan, PR. (a) Regulated area. A moving safety zone is...

2010-07-01

88

78 FR 77597 - Safety Zone; Allied PRA-Solid Works, San Diego Bay; San Diego, CA  

Science.gov (United States)

...1625-AA00 Safety Zone; Allied PRA-Solid Works, San Diego Bay; San Diego, CA...the San Diego Bay for the Allied PRA--Solid Works fireworks display, which will be...T11-612 Safety zone; Allied PRA-Solid Works; San Diego, CA. (a)...

2013-12-24

89

Structure of microemulsions by SANS  

International Nuclear Information System (INIS)

Small-angle neutron scattering (SANS) has been used to determine the structure of microemulsions in the system hydrocarbon-water-sodium di-ethylhexylsulfosuccinate (AOT). SANS spectra taken in a deuterated solvent showed a perfect Guinier fit with a radius of gyration of 15A regardless of the amount of AOT from 0.1 to 5% present. By varying the proportions of deuterated and undeuterated solvent to vary the contrast between the micelles and the solvent, it is concluded that the micelles are basically monodispersed spherical aggregations of 22 AOT molecules

90

Update: San Andreas Fault experiment  

Science.gov (United States)

Satellite laser ranging techniques are used to monitor the broad motion of the tectonic plates comprising the San Andreas Fault System. The San Andreas Fault Experiment, (SAFE), has progressed through the upgrades made to laser system hardware and an improvement in the modeling capabilities of the spaceborne laser targets. Of special note is the launch of the Laser Geodynamic Satellite, LAGEOS spacecraft, NASA's only completely dedicated laser satellite in 1976. The results of plate motion projected into this 896 km measured line over the past eleven years are summarized and intercompared.

Christodoulidis, D. C.; Smith, D. E.

1984-01-01

91

« Imaginez un monde sans mesure… »  

Directory of Open Access Journals (Sweden)

Full Text Available Que serait le monde, sans mesure ? Les durées, les lieux et même les directions perdraient de leur substance. Prendre la direction de Marseille ou de Lyon sans connaître la distance à parcourir pour y parvenir n'a pas de sens et rend ces lieux hors d'atteinte. Ne pas connaître le temps d'attente restant avant d'embarquer pour Los Angeles ou Paris, rend, à nos yeux de « modernes mondialisés », ces destinations inaccessibles : autant sortir son duvet et ...

Blandine Ripert

2004-03-01

92

Marketing San Juan Basin gas  

International Nuclear Information System (INIS)

Marketing natural gas produced in the San Juan Basin of New Mexico and Colorado principally involves four gas pipeline companies with significant facilities in the basin. The system capacity, transportation rates, regulatory status, and market access of each of these companies is evaluated. Because of excess gas supplies available to these pipeline companies, producers can expect improved take levels and prices by selling gas directly to end users and utilities as opposed to selling gas to the pipelines for system supply. The complexities of transporting gas today suggest that the services of an independent gas marketing company may be beneficial to smaller producers with gas supplies in the San Juan Basin

93

San Fernando: ¿utopía o proyecto inconcluso? / San Fernando: utopia or unfinished project?  

Scientific Electronic Library Online (English)

Full Text Available SciELO Peru | Language: Spanish Abstract in spanish El estudio analiza los distintos proyectos de modernización ocurridos en la Facultad de Medicina de San Fernando, en el contexto de una seria crisis institucional a finales del siglo XX. Para ello, a partir de las categorías de colectivo de pensamiento y estilo de pensamiento propuestos por Ludwick [...] Fleck, se hace un estudio de los procesos socio-históricos relacionados con los distintas iniciativas desplegadas en la más antigua escuela de medicina del Perú. Un análisis de las diferentes iniciativas identificadas nos llevan a la hipótesis de que la crisis de San Fernando, como colectivo académico, se basa en las contradicciones propias de un proyecto institucional inconcluso, que además cíclicamente se manifiesta asincrónico y disfuncional, al complejo y cambiante entorno institucional y cultural de la sociedad peruana. El estudio sistematiza las principales características de los diferentes proyectos de modernización institucional. Luego de un análisis del actual contexto del sector salud peruano, a partir de los procesos identificados, se propone una agenda de desarrollo, orientada a generar un ciclo de acumulación y crecimiento académico, que constituya una etapa de transición de cara a los retos que el siglo XXI plantea a los miembros del colectivo San Fernandino. Abstract in english The study analyzes the various modernization projects at the Faculty of Medicine San Fernando, in the context of a serious institutional crisis at the end of the XXth century. Beginning from the thinking collective and thinking style categories proposed by Ludwick Fleck, we study the social and hist [...] orical processes related to the different initiatives displayed in the ancient Peruvian school of medicine. Analysis of the different initiatives identified lead us to the hypothesis that San Fernando’s crisis as an academic collective is based in the proper contradictions of an unfinished institutional project that also manifests cyclically asynchronous and dysfunctional to the complex and changing Peruvian society’s institutional and cultural environment. The study systematizes the main characteristics of the different institutional modernization projects. Following an analysis of the current Peruvian health sector context and starting from the processes identified, we propose a development agenda oriented to generate an academic accumulation and growth cycle that constitutes a transition stage in front of the challenges posed by the XXIth century to the San Fernando collective members.

Juan Pablo, Murillo; Gustavo, Franco.

94

Parkfield: Plans for a San Andreas Fault Observatory at Depth  

Science.gov (United States)

Building on more than 15 years of experience from the Parkfield Earthquake Experiment, the National Science Foundation (NSF) and the USGS started in June 2004 to drill a deep hole in order to install instruments directly within the San Andreas Fault Zone near the initiation point of previous magnitude 6 Parkfield earthquakes (drill hole location in relation to slip rate). These instruments, set 2 to 3 km beneath the Earth's surface, will form a San Andreas Fault Observatory at Depth (SAFOD). This project will directly reveal, for the first time, the physical and chemical processes controlling earthquake generation within a seismically active fault.

2008-02-07

95

BotEC: The San Andreas Fault's Rate of Movement  

Science.gov (United States)

Question: The San Andrea is an active fault zone, marked by frequent earthquake activity. The crust southwest of this strike-slip fault (including Los Angeles) is sliding to the northwest relative to the other side. It is possible to estimate the average annual rate of movement by recognizing rock of an earlier geologic age that have been cut and offset by the lateral movement along the fault. Below is a generalized geologic map of southern California, which shows Pliocene-Miocene age rocks offset along the San Andreas fault. The age of these rocks have been determined to be 25 million years. What is the average annual rate of movement in centimeters per year along the San Andreas fault?

Kresan, Peter

96

27 CFR 9.110 - San Benito.  

Science.gov (United States)

...2010-04-01 2010-04-01 false San Benito. 9.110 Section 9.110 ...Viticultural Areas § 9.110 San Benito. (a) Name. The name of the...area described in this section is “San Benito.” (b) Approved maps....

2010-04-01

97

Sinopsis de las Pteridotifas de la Provincia de San Luis (Argentina) / Pteridophytic Flora of San Luis Province (Argentina)  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish El objetivo de este estudio es dar conocer los helechos y grupos emparentados que habitan en la Provincia de San Luis (Argentina). Para ello se consultaron distintos herbarios y se realizó un viaje de campana. En esta provincia se registra una relativamente baja diversidad específica (42 taxones) co [...] mparada con una alta diversidad genérica (20 géneros). Los géneros mejor representados son Cheilanthes (8 taxones) y Blechnum (6 taxones). Se dan a conocer 6 nuevas citas para la provincia. Las Pteridofitas se encuentra principalmente en las Sierras de San Luis y Comechingones, observándose una influencia florística andino-pampeana (39 taxa), austro-brasilena (22 taxa) y austral (9 taxa). Se presentan iconografías, distribución geográfica y características ecológicas de cada taxón. Abstract in english The aim of this study was to reveal the ferns and allied groups that inhabit at San Luis Province, Argentina. For this purpose different herbaria were consulted and a field trip was performed. In this province, a low diversity of species (42) in comparison to a relatively high diversity of genera (2 [...] 0) is registered. The more representative genera are Cheilanthes (8 taxa) and Blechnum (6 taxa). Six taxa are registered for the first time in San Luis. In this province Pteridophytes grow mainly at Sierras of San Luis and Comechingones, showing Andean-Pampasican (39 taxa), Southern-Brazilian (22 taxa) and Austral (9 taxa) floristic influences. The iconography, geographical distribution and ecology of each taxon are also given.

Elias Ramon, De La Sota; María Lujan, Luna; Gabriela Elena, Giudice; Juan Pablo, Ramos Giacosa.

98

Sinopsis de las Pteridotifas de la Provincia de San Luis (Argentina Pteridophytic Flora of San Luis Province (Argentina  

Directory of Open Access Journals (Sweden)

Full Text Available El objetivo de este estudio es dar conocer los helechos y grupos emparentados que habitan en la Provincia de San Luis (Argentina. Para ello se consultaron distintos herbarios y se realizó un viaje de campana. En esta provincia se registra una relativamente baja diversidad específica (42 taxones comparada con una alta diversidad genérica (20 géneros. Los géneros mejor representados son Cheilanthes (8 taxones y Blechnum (6 taxones. Se dan a conocer 6 nuevas citas para la provincia. Las Pteridofitas se encuentra principalmente en las Sierras de San Luis y Comechingones, observándose una influencia florística andino-pampeana (39 taxa, austro-brasilena (22 taxa y austral (9 taxa. Se presentan iconografías, distribución geográfica y características ecológicas de cada taxón.The aim of this study was to reveal the ferns and allied groups that inhabit at San Luis Province, Argentina. For this purpose different herbaria were consulted and a field trip was performed. In this province, a low diversity of species (42 in comparison to a relatively high diversity of genera (20 is registered. The more representative genera are Cheilanthes (8 taxa and Blechnum (6 taxa. Six taxa are registered for the first time in San Luis. In this province Pteridophytes grow mainly at Sierras of San Luis and Comechingones, showing Andean-Pampasican (39 taxa, Southern-Brazilian (22 taxa and Austral (9 taxa floristic influences. The iconography, geographical distribution and ecology of each taxon are also given.

Elias Ramon De La Sota

2009-12-01

99

Sinopsis de las Pteridotifas de la Provincia de San Luis (Argentina) / Pteridophytic Flora of San Luis Province (Argentina)  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish El objetivo de este estudio es dar conocer los helechos y grupos emparentados que habitan en la Provincia de San Luis (Argentina). Para ello se consultaron distintos herbarios y se realizó un viaje de campana. En esta provincia se registra una relativamente baja diversidad específica (42 taxones) co [...] mparada con una alta diversidad genérica (20 géneros). Los géneros mejor representados son Cheilanthes (8 taxones) y Blechnum (6 taxones). Se dan a conocer 6 nuevas citas para la provincia. Las Pteridofitas se encuentra principalmente en las Sierras de San Luis y Comechingones, observándose una influencia florística andino-pampeana (39 taxa), austro-brasilena (22 taxa) y austral (9 taxa). Se presentan iconografías, distribución geográfica y características ecológicas de cada taxón. Abstract in english The aim of this study was to reveal the ferns and allied groups that inhabit at San Luis Province, Argentina. For this purpose different herbaria were consulted and a field trip was performed. In this province, a low diversity of species (42) in comparison to a relatively high diversity of genera (2 [...] 0) is registered. The more representative genera are Cheilanthes (8 taxa) and Blechnum (6 taxa). Six taxa are registered for the first time in San Luis. In this province Pteridophytes grow mainly at Sierras of San Luis and Comechingones, showing Andean-Pampasican (39 taxa), Southern-Brazilian (22 taxa) and Austral (9 taxa) floristic influences. The iconography, geographical distribution and ecology of each taxon are also given.

Elias Ramon, De La Sota; María Lujan, Luna; Gabriela Elena, Giudice; Juan Pablo, Ramos Giacosa.

2009-12-01

100

Radiation accident in San Salvador  

International Nuclear Information System (INIS)

On the base of a radiation accident of tragic consequences which took place in 1989 in San Salvador the author formulates conclusions that are also important for the Polish users of instruments with isotopic sources. Only high qualifications, permanent training and proper exploitation of such instruments would ensure safety of the employees. (author)

 
 
 
 
101

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

102

A simulation of the San Andreas fault experiment  

Science.gov (United States)

The San Andreas fault experiment (Safe), which employs two laser tracking systems for measuring the relative motion of two points on opposite sides of the fault, has been simulated for an 8-yr observation period. The two tracking stations are located near San Diego on the western side of the fault and near Quincy on the eastern side; they are roughly 900 km apart. Both will simultaneously track laser reflector equipped satellites as they pass near the stations. Tracking of the Beacon Explorer C spacecraft has been simulated for these two stations during August and September for 8 consecutive years. An error analysis of the recovery of the relative location of Quincy from the data has been made, allowing for model errors in the mass of the earth, the gravity field, solar radiation pressure, atmospheric drag, errors in the position of the San Diego site, and biases and noise in the laser systems. The results of this simulation indicate that the distance of Quincy from San Diego will be determined each year with a precision of about 10 cm. Projected improvements in these model parameters and in the laser systems over the next few years will bring the precision to about 1-2 cm by 1980.

Agreen, R. W.; Smith, D. E.

1974-01-01

103

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

104

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

105

Relativity  

CERN Document Server

The theory of relativity has become a cornerstone of modern physics. Over the course of time it has been scrutinized in a multitude of experiments and has always been verified with high accuracy. The correctness of this theory can no longer be called into question. Right after its discovery by Albert Einstein in 1905, special relativity was only gradually accepted because it made numerous predictions contradicting common sense, fervently castigated by Einstein, and also defied experiment for too long a time. It was only with the advent of particle or high energy physics that matter could be ac

Brewster, Hilary D

2009-01-01

106

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

107

Ecología térmica de la lagartija endémica Liolaemus eleodori (Iguania: Liolaemidae) en el Parque Nacional San Guillermo, San Juan, Argentina / Thermal ecology of the endemic lizard Liolaemus eleodori (Iguania: Liolaemidae) in National Park San Guillermo, San Juan, Argentina  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish La ecología térmica de la lagartija endémica Liolaemus eleodori fue estudiada en el Parque Nacional San Guillermo, provincia de San Juan, Argentina. Los datos fueron colectados durante diciembre de 2004 y febrero de 2005. Se registró la temperatura cloacal (Tb), substrato (Ts) y aire (Ta), con un te [...] rmómetro de lectura rápida. Liolaemus eleodori presentó una estrategia termorregulatoria de tipo termoconformista con un patrón de actividad de tipo unimodal y uso preferencial del microhábitat suelo desnudo (desprovisto completamente de vegetación). Nuestros datos sugieren que la estrategia termorregulatoria, el uso del espacio y el tiempo están estrechamente relaciondos con las condiciones climáticas rigurosas del sitio de estudio. Abstract in english The thermal ecology of the endemic lizard Liolaemus eleodori was studied at the San Guillermo National Park, Province of San Juan, Argentina. Data were collected during December 2004 and February 2005. Cloacal (Tc), substrate (Ts) and air (Ta) temperatures were registered using a quick reading therm [...] ometer. Liolaemus eleodori exhibited a thermo-conformist thermoregulatory strategy with a unimodal pattern of activity, showing a marked preference for a naked ground microhabitat (completely free of vegetation). Our data suggest that the thermoregulatory strategy and use of space and time is strictly related to the harsh climatic conditions of the study site.

Héctor J., Villavicencio; Juan C., Acosta; Graciela M., Blanco; José A., Marinero.

108

“TOTALMENTE DIVERSO”: SAN TOMMASO  

Directory of Open Access Journals (Sweden)

Full Text Available In order to synthesize the exploration of above presented ideas, wesuggest the following conclusions: Pope John Paul II cherished Saint Thomas as representing „that eternal novelty of thinking” which brought us close to the ontic space of knowledge, the dynamic principle of which is Being. The climax of this condition would be the moment of embracing the truth, which would trigger that vital necessity for metaphysics. According to the stated objective ofthe necessary and indispensable ratio between reason and faith, we see that Tomas suggested the vision of the objective, transcendent and universal truth. This fact determined Pope John Paul II to appreciate that “passion” for truth. The man of our time must walk again towards the light of this truth. In this sense, Saint Thomas’ philosophy represents the guide above all. Its philosophic importance, meaning that “it is truly the philosophy of Being, and not the philosophy of a simple epiphany”, confirms its aim to provide a constant answerto many of the problems that concerns the human mind: the problems ofknowledge and Being, the problems of speaking and doing, the problems of the world, and the problems related with Man and God.

IOSIF TAMA?

2011-05-01

109

33 CFR 165.1102 - Security Zone; Naval Base Point Loma; San Diego Bay, San Diego, CA.  

Science.gov (United States)

...Point Loma; San Diego Bay, San Diego, CA. 165.1102 Section 165.1102 Navigation...Point Loma; San Diego Bay, San Diego, CA. (a) Location. The following area...to the Naval Base Point Loma, San Diego, CA, enclosed by the following...

2010-07-01

110

78 FR 39610 - Safety Zone; Big Bay Boom, San Diego Bay; San Diego, CA  

Science.gov (United States)

...RIN 1625-AA00 Safety Zone; Big Bay Boom, San Diego Bay; San Diego, CA AGENCY...Port of San Diego Fourth of July Big Bay Boom Fireworks display on the evening of July...Diego Bay for the Fourth of July Big Bay Boom. This event will occur between...

2013-07-02

111

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

Science.gov (United States)

...Safety Zone; San Francisco New Year's Eve Fireworks Display...for the annual San Francisco New Year's Eve Fireworks Display...during the loading, transit, and arrival of the fireworks barge to the...for the annual San Francisco New Year's Eve Fireworks...

2011-12-28

112

75 FR 48306 - San Juan National Forest Resource Advisory Committee  

Science.gov (United States)

...DEPARTMENT OF AGRICULTURE Forest Service San Juan National Forest Resource Advisory...SUMMARY: The San Juan National Forest Resource Advisory...The meeting will be held at the San Juan Public Lands Center, 15 Burnett...

2010-08-10

113

76 FR 40876 - San Juan National Forest Resource Advisory Committee  

Science.gov (United States)

...DEPARTMENT OF AGRICULTURE Forest Service San Juan National Forest Resource Advisory...SUMMARY: The San Juan National Forest Resource Advisory...The meeting will be held at the San Juan Public Lands Center, 15 Burnett...

2011-07-12

114

77 FR 47358 - San Juan National Forest Resource Advisory Committee  

Science.gov (United States)

...DEPARTMENT OF AGRICULTURE Forest Service San Juan National Forest Resource Advisory...SUMMARY: The San Juan National Forest Resource Advisory...The meeting will be held at the San Juan Public Lands Center, 15 Burnett...

2012-08-08

115

76 FR 12692 - San Juan National Forest Resource Advisory Committee  

Science.gov (United States)

...DEPARTMENT OF AGRICULTURE Forest Service San Juan National Forest Resource Advisory...SUMMARY: The San Juan National Forest Resource Advisory...The meeting will be held at the San Juan Public Lands Center, 15 Burnett...

2011-03-08

116

27 CFR 9.157 - San Francisco Bay.  

Science.gov (United States)

...Alameda, and Contra Costa, which border the San Francisco Bay. The area also includes portions...other counties, Solano, Santa Cruz, and San Benito, which are in the general vicinity of the greater San Francisco Bay metropolitan area. The...

2010-04-01

117

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

118

Relativity  

Science.gov (United States)

Preface; Notation; Part I. Special Relativity: 1. Introduction: inertial systems and Galilei invariance of classical mechanics; 2. Light propagation in moving coordinate systems and Lorentz transformations; 3. Our world as a Minkowski space; 4. Mechanics of special relativity; 5. Optics of plane waves; 6. Four-dimensional vectors and tensors; 7. Electrodynamics in vacuo; 8. Transformation properties of electromagnetic fields: examples; 9. Null vectors and the algebraic properties of electromagnetic field tensors; 10. Charged point particles and their field; 11. Pole-dipole particles and their field; 12. Electrodynamics in media; 13. Perfect fluids and other physical theories; Part II. Riemannian Geometry: 14. Introduction: the force-free motion of particles in Newtonian mechanics; 15. Why Riemannian geometry?; 16. Riemannian space; 17. Tensor algebra; 18. The covariant derivative and parallel transport; 19. The curvature tensor; 20. Differential operators, integrals and integral laws; 21. Fundamental laws of physics in Riemannian spaces; Part III. Foundations of Einstein's Theory of Gravitation: 22. The fundamental equations of Einstein's theory of gravitation; 23. The Schwarzschild solution; 24. Experiments to verify the Schwarzschild metric; 25. Gravitational lenses; 26. The interior Schwarzschild solution; Part IV. Linearized Theory of Gravitation, Far Fields and Gravitational Waves: 27. The linearized Einstein theory of gravity; 28. Far fields due to arbitrary matter distributions and balance equations for momentum and angular momentum; 29. Gravitational waves; 30. The Cauchy problem for the Einstein field equations; Part V. Invariant Characterization of Exact Solutions: 31. Preferred vector fields and their properties; 32. The Petrov classification; 33. Killing vectors and groups of motion; 34. A survey of some selected classes of exact solutions; Part VI. Gravitational Collapse and Black Holes: 35. The Schwarzschild singularity; 36. Gravitational collapse - the possible life history of a spherically symmetric star; 37. Rotating black holes; 38. Black holes are not black - relativity theory and quantum theory; 39. The conformal structure of infinity; Part VII. Cosmology: 40. Robertson-Walker metrics and their properties; 41. The dynamics of Robertson-Walker metrics and the Friedmann universes; 42. Our Universe as a Friedmann model; 43. General cosmological models; Bibliography; Index.

Stephani, Hans

2004-02-01

119

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)

...USCG-2013-0166] RIN 1625-AA00 Safety Zone; Spanish Navy School Ship San Sebastian El Cano...de San Juan during the transit of the Spanish Navy School Ship San Sebastian El Cano...the high ranking officials on board the Spanish Navy School Ship San Sebastian El...

2013-03-29

120

78 FR 28800 - Foreign-Trade Zone 61-San Juan, Puerto Rico; Application for Subzone; Parapiezas Corporation; San...  

Science.gov (United States)

...S-65-2013] Foreign-Trade Zone 61--San Juan, Puerto Rico; Application for Subzone; Parapiezas Corporation; San Juan, Puerto Rico An application has been...Parapiezas Corporation located in San Juan, Puerto Rico. The application...

2013-05-16

 
 
 
 
121

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

122

Developing solar power programs : San Francisco's experience  

International Nuclear Information System (INIS)

This keynote address discussed an array of solar programs initiated in government-owned buildings in San Francisco. The programs were strongly supported by the city's mayor,and the voting public. Known for its fog and varying microclimates, 11 monitoring stations were set up throughout the city to determine viable locations for the successful application of solar technologies. It was observed that 90 per cent of the available sunshine occurred in the central valley, whereas fog along the Pacific shore was problematic. Seven of the monitoring sites showed excellent results. Relationships with various city departments were described, as well as details of study loads, load profiles, electrical systems, roofs and the structural capabilities of the selected government buildings. There was a focus on developing good relations with the local utility. The Moscone Convention Center was selected for the program's flagship installation, a 675 kW solar project which eventually won the US EPA Green Power Award for 2004 and received high press coverage. Cost of the project was $4.2 million. 825,000 kWh solar electricity was generated, along with 4,500,000 kWh electricity saved annually from efficiency measures, resulting in a net reduction of 5,325,000 kWh. Savings on utilities bills for the center were an estimated $1,078,000. A pipeline of solar projects followed, with installations at a sewage treatment plant and a large recycling depot. A program of smaller sites included libraries, schools and health facilities. Details of plans to apply solar technology to a 500 acre redevelopment site in southeast San Francisco with an aging and inadequate electrical infrastructure were described. A model of efficient solar housing for the development was presented, with details of insulation, windows, heating ventilation and air-conditioning (HVAC), water heating, lighting, appliances and a 1.2 kilowatt solar system. Peak demand reductions were also presented. tabs., figs

123

Evaluación de los planes curriculares y sílabos de las asignaturas de la Facultad de Medicina de la UNMSM, sobre la atención integral de salud a personas afectadas por la violencia / Assessment of Faculty of Medicine, Universidad Nacional Mayor de San Marcos curricula and syllabi on subjects related to integral health care of persons affected by violence  

Scientific Electronic Library Online (English)

Full Text Available SciELO Peru | Language: Spanish Abstract in spanish Propósito: En el año 2005 se realizó un Estudio de Línea de Base en la Facultad de Medicina de la Universidad Nacional Mayor de San Marcos (UNMSM) para conocer la realidad de la formación de los alumnos del pregrado sobre conocimientos y competencias relacionados a la violencia y violación de derech [...] os humanos (DDHH), bajo la hipótesis que este problema nacional de salud no había sido considerado en forma adecuada y suficiente en los planes curriculares de la Facultad de Medicina. Objetivos: Diagnosticar el proceso de enseñanza-aprendizaje de la Facultad de Medicina sobre la atención integral de salud a personas afectadas por efectos de la violencia y violación de los derechos humanos. Diseño: Estudio descriptivo, transversal evaluativo de análisis. Institución: Facultad de Medicina, Universidad Nacional Mayor de San Marcos. Materiales: Planes de estudios de las 5 escuelas académico profesionales (EAP) de la Facultad. Intervenciones: Por juicio de un grupo de expertos, se seleccionó 81 asignaturas que, por sus características, debían contener temas relacionados con la violencia y violación de los derechos humanos (DDHH). Se analizó los sílabos de las asignaturas seleccionadas. Se efectuó coordinaciones con los directores de las 5 Escuelas Académico Profesionales. Se realizó presentaciones de los objetivos de la investigación y del Programa a los coordinadores de los departamentos de Psiquiatría, Medicina, Cirugía, Ginecología y Obstetricia, Pediatría, Medicina Preventiva y Salud Pública, así como entrevistas a docentes interesados en el tema de violencia y violación de los DDHH. A los docentes que acudieron a la entrevista se les indagó sobre su conocimiento, experiencia e interés sobre los temas señalados y se les explicó las características del Programa, con la finalidad de seleccionarlos para una futura capacitación. Principales medidas de resultados: Contenido sobre violencia en los sílabos de las escuelas académico profesionales. Resultados: El estudio demostró que solo 30/81 sílabos (37%) tenía algún contenido sobre violencia, de los cuales correspondía a la EAP de Medicina 9/19 (47,3%), EAP de Obstetricia 9/20 (45%), EAP de Enfermería 5/12 (41,6%), EAP de Tecnología Médica 6/19 (31,5%) y la EAP de Nutrición 1/11 (9,1%). Conclusiones: Estos resultados demostraron la validez de la hipótesis, que efectivamente existía un vacío en la formación de los futuros profesionales de la salud respecto a sus conocimientos y competencias sobre violencia. Abstract in english Aims: In 2005 a baseline study was conducted in order to know the curricular plans and syllabi contents of the Faculty of Medicine, Universidad Nacional Mayor de San Marcos, related to violence health disorders given to undergraduate students of the 5 Academic Professional Schools (APS), under the h [...] ypothesis that this national health problem has not been considered sufficiently and adequately in the curricular plans of the Faculty. Objectives: To determine the Faculty of Medicine’s teaching-learning process on integral health care to persons affected by violence and human rights violation. Design: Descriptive, transversal evaluative analysis. Setting: Faculty of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru. Materials: Curricular plans of the 5 Faculty’s academic professional schools. Interventions: A total of 81 syllabi courses were considered would have contents on themes related to violence. Coordination work with the directors of the Academic Professional Schools of Medicine, Midwifes, Nursery, Medical Technology and Nutrition was carried out. Formal presentations of the objectives of the Program and this research were done to the Department heads of Medicine, Surgery, Pediatrics, Gynecology-Obstetrics, Psychiatry, Preventive Medicine and Public Health. Interviews to professors to determine their knowledge, experience and interest in the field of violence were conducted as to consider future trainin

Eva, Miranda; Fausto, Garmendia; Alberto, Perales; Pedro, Mendoza; Jorge, Miano; Walter, Calderón.

124

San Diego's High School Dropout Crisis  

Science.gov (United States)

This article highlights San Diego's dropout problem and how much it's costing the city and the state. Most San Diegans do not realize the enormous impact high school dropouts on their city. The California Dropout Research Project, located at the University of California at Santa Barbara, has estimated the lifetime cost of one class or cohort of…

Wilson, James C.

2012-01-01

125

Postseismic relaxation along the San Andreas fault at Parkfield from continuous seismological observations.  

Science.gov (United States)

Seismic velocity changes and nonvolcanic tremor activity in the Parkfield area in California reveal that large earthquakes induce long-term perturbations of crustal properties in the San Andreas fault zone. The 2003 San Simeon and 2004 Parkfield earthquakes both reduced seismic velocities that were measured from correlations of the ambient seismic noise and induced an increased nonvolcanic tremor activity along the San Andreas fault. After the Parkfield earthquake, velocity reduction and nonvolcanic tremor activity remained elevated for more than 3 years and decayed over time, similarly to afterslip derived from GPS (Global Positioning System) measurements. These observations suggest that the seismic velocity changes are related to co-seismic damage in the shallow layers and to deep co-seismic stress change and postseismic stress relaxation within the San Andreas fault zone. PMID:18787165

Brenguier, F; Campillo, M; Hadziioannou, C; Shapiro, N M; Nadeau, R M; Larose, E

2008-09-12

126

Comportamiento de los defectos congénitos en San Luis / Behavior of congenital defects in San Luis municipality  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish Abstract in spanish Introducción: Con el perfeccionamiento de los cuidados obstétricos y neonatales, los defectos congénitos al nacer han condicionado a un aumento relativo en la morbimortalidad infantil a nivel mundial. Objetivo: Evaluar la incidencia de malformaciones congénitas en el municipio San Luis en el periodo [...] 2000-2009, así como clasificarlas según aparatos o sistemas, precisando la efectividad del diagnóstico prenatal, la decisión tomada por la pareja una vez diagnosticada y su repercusión sobre la mortalidad infantil. Material y método: Se realizó un estudio retrospectivo y descriptivo de los defectos congénitos diagnosticados prenatalmente y después del nacimiento pertenecientes al policlínico "Epifanio Rojas Gil" del municipio San Luis en el período 2000-2009, utilizando los libros de registro de diagnóstico prenatal ubicados en el servicio de genética y se enriqueció con los casos evaluados en consulta de genética clínica. Resultados: La incidencia de defectos congénitos disminuyó en el segundo quinquenio, con un mejor control y seguimiento de las mujeres en edad fértil y gestantes. La mayoría de los defectos fueron diagnosticados prenatalmente (60%) siendo el ultrasonido y el alfafeto proteína medios diagnósticos muy efectivos principalmente en los últimos cinco años. Las malformaciones cardiovasculares, y los defectos de cierre del tubo neural resultaron las más frecuentes. La tasa de mortalidad infantil debida a defectos congénitos fue baja, siendo el año 2003 el de mayor incidencia con un predominio del sistema cardiovascular, no reportándose en el último quinquenio. Conclusiones: La descentralización de los servicios permitió una mejor prevención, diagnóstico precoz y supervivencia de los recién nacidos con defecto congénito en el municipio. Abstract in english Introduction: With the advances of obstetric and neonatal care, congenital defects at birth have led to a relative increase in child morbidity and mortality all over the world. Objectives: to assess the incidence of congenital malformations in San Luis municipality during 2000-2009 and to classify t [...] hem regarding the systems or apparatus affected, to precise the effectiveness of prenatal diagnosis, the decision making of the couple after the diagnosis and repercussion on infant mortality. Material and method: a retrospective and descriptive study about the congenital defects diagnosed during prenatal periods and after birth at “Epifanio Rojas Gil” polyclinic in San Luis municipality; that was carried out throughout 2000-2009 using the records of prenatal diagnosis in the genetic services, which enriched the analysis of the cases assessed in the clinical genetic office. Results: the incidence of congenital defects diminished during the second five-year period, showing a much better control and follow-up of women in fertile ages and pregnant women. The majority of the defects were prenatally diagnosed (60%) where ultrasound along with alpha fetoprotein [AFP] analysis were the most effective diagnosis means, mainly during the last five years. Cardiovascular malformations and neural tube defect closure were the most frequent. The rate of infant mortality related to congenital defects was low, however 2003 showed the greatest incidence, prevailing the defects in cardiovascular system, no cases were reported during the last five-year period. Conclusions: decentralization of genetic services allowed improvements in prevention, early diagnosis and survival of newborn carrying congenital defects in San Luis municipality.

Hernán, Pereda Chávez; Francisco, Delgado Aguiar; María del Carmen, Morejón; Yesenia, Pérez Expósito; Ledys Mabel, Hernández Fernández.

2012-08-01

127

Comportamiento de los defectos congénitos en San Luis / Behavior of congenital defects in San Luis municipality  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish Abstract in spanish Introducción: Con el perfeccionamiento de los cuidados obstétricos y neonatales, los defectos congénitos al nacer han condicionado a un aumento relativo en la morbimortalidad infantil a nivel mundial. Objetivo: Evaluar la incidencia de malformaciones congénitas en el municipio San Luis en el periodo [...] 2000-2009, así como clasificarlas según aparatos o sistemas, precisando la efectividad del diagnóstico prenatal, la decisión tomada por la pareja una vez diagnosticada y su repercusión sobre la mortalidad infantil. Material y método: Se realizó un estudio retrospectivo y descriptivo de los defectos congénitos diagnosticados prenatalmente y después del nacimiento pertenecientes al policlínico "Epifanio Rojas Gil" del municipio San Luis en el período 2000-2009, utilizando los libros de registro de diagnóstico prenatal ubicados en el servicio de genética y se enriqueció con los casos evaluados en consulta de genética clínica. Resultados: La incidencia de defectos congénitos disminuyó en el segundo quinquenio, con un mejor control y seguimiento de las mujeres en edad fértil y gestantes. La mayoría de los defectos fueron diagnosticados prenatalmente (60%) siendo el ultrasonido y el alfafeto proteína medios diagnósticos muy efectivos principalmente en los últimos cinco años. Las malformaciones cardiovasculares, y los defectos de cierre del tubo neural resultaron las más frecuentes. La tasa de mortalidad infantil debida a defectos congénitos fue baja, siendo el año 2003 el de mayor incidencia con un predominio del sistema cardiovascular, no reportándose en el último quinquenio. Conclusiones: La descentralización de los servicios permitió una mejor prevención, diagnóstico precoz y supervivencia de los recién nacidos con defecto congénito en el municipio. Abstract in english Introduction: With the advances of obstetric and neonatal care, congenital defects at birth have led to a relative increase in child morbidity and mortality all over the world. Objectives: to assess the incidence of congenital malformations in San Luis municipality during 2000-2009 and to classify t [...] hem regarding the systems or apparatus affected, to precise the effectiveness of prenatal diagnosis, the decision making of the couple after the diagnosis and repercussion on infant mortality. Material and method: a retrospective and descriptive study about the congenital defects diagnosed during prenatal periods and after birth at “Epifanio Rojas Gil” polyclinic in San Luis municipality; that was carried out throughout 2000-2009 using the records of prenatal diagnosis in the genetic services, which enriched the analysis of the cases assessed in the clinical genetic office. Results: the incidence of congenital defects diminished during the second five-year period, showing a much better control and follow-up of women in fertile ages and pregnant women. The majority of the defects were prenatally diagnosed (60%) where ultrasound along with alpha fetoprotein [AFP] analysis were the most effective diagnosis means, mainly during the last five years. Cardiovascular malformations and neural tube defect closure were the most frequent. The rate of infant mortality related to congenital defects was low, however 2003 showed the greatest incidence, prevailing the defects in cardiovascular system, no cases were reported during the last five-year period. Conclusions: decentralization of genetic services allowed improvements in prevention, early diagnosis and survival of newborn carrying congenital defects in San Luis municipality.

Hernán, Pereda Chávez; Francisco, Delgado Aguiar; María del Carmen, Morejón; Yesenia, Pérez Expósito; Ledys Mabel, Hernández Fernández.

128

Comportamiento de los defectos congénitos en San Luis Behavior of congenital defects in San Luis municipality  

Directory of Open Access Journals (Sweden)

Full Text Available Introducción: Con el perfeccionamiento de los cuidados obstétricos y neonatales, los defectos congénitos al nacer han condicionado a un aumento relativo en la morbimortalidad infantil a nivel mundial. Objetivo: Evaluar la incidencia de malformaciones congénitas en el municipio San Luis en el periodo 2000-2009, así como clasificarlas según aparatos o sistemas, precisando la efectividad del diagnóstico prenatal, la decisión tomada por la pareja una vez diagnosticada y su repercusión sobre la mortalidad infantil. Material y método: Se realizó un estudio retrospectivo y descriptivo de los defectos congénitos diagnosticados prenatalmente y después del nacimiento pertenecientes al policlínico "Epifanio Rojas Gil" del municipio San Luis en el período 2000-2009, utilizando los libros de registro de diagnóstico prenatal ubicados en el servicio de genética y se enriqueció con los casos evaluados en consulta de genética clínica. Resultados: La incidencia de defectos congénitos disminuyó en el segundo quinquenio, con un mejor control y seguimiento de las mujeres en edad fértil y gestantes. La mayoría de los defectos fueron diagnosticados prenatalmente (60% siendo el ultrasonido y el alfafeto proteína medios diagnósticos muy efectivos principalmente en los últimos cinco años. Las malformaciones cardiovasculares, y los defectos de cierre del tubo neural resultaron las más frecuentes. La tasa de mortalidad infantil debida a defectos congénitos fue baja, siendo el año 2003 el de mayor incidencia con un predominio del sistema cardiovascular, no reportándose en el último quinquenio. Conclusiones: La descentralización de los servicios permitió una mejor prevención, diagnóstico precoz y supervivencia de los recién nacidos con defecto congénito en el municipio.Introduction: With the advances of obstetric and neonatal care, congenital defects at birth have led to a relative increase in child morbidity and mortality all over the world. Objectives: to assess the incidence of congenital malformations in San Luis municipality during 2000-2009 and to classify them regarding the systems or apparatus affected, to precise the effectiveness of prenatal diagnosis, the decision making of the couple after the diagnosis and repercussion on infant mortality. Material and method: a retrospective and descriptive study about the congenital defects diagnosed during prenatal periods and after birth at “Epifanio Rojas Gil” polyclinic in San Luis municipality; that was carried out throughout 2000-2009 using the records of prenatal diagnosis in the genetic services, which enriched the analysis of the cases assessed in the clinical genetic office. Results: the incidence of congenital defects diminished during the second five-year period, showing a much better control and follow-up of women in fertile ages and pregnant women. The majority of the defects were prenatally diagnosed (60% where ultrasound along with alpha fetoprotein [AFP] analysis were the most effective diagnosis means, mainly during the last five years. Cardiovascular malformations and neural tube defect closure were the most frequent. The rate of infant mortality related to congenital defects was low, however 2003 showed the greatest incidence, prevailing the defects in cardiovascular system, no cases were reported during the last five-year period. Conclusions: decentralization of genetic services allowed improvements in prevention, early diagnosis and survival of newborn carrying congenital defects in San Luis municipality.

Hernán Pereda Chávez

2012-08-01

129

Structural model of the San Bernardino basin, California, from analysis of gravity, aeromagnetic, and seismicity data  

Science.gov (United States)

The San Bernardino basin is an area of Quaternary extension between the San Jacinto and San Andreas Fault zones in southern California. New gravity data are combined with aeromagnetic data to produce two- and three-dimensional models of the basin floor. These models are used to identify specific faults that have normal displacements. In addition, aeromagnetic maps of the basin constrain strike-slip offset on many faults. Relocated seismicity, focal mechanisms, and a seismic reflection profile for the basin area support interpretations of the gravity and magnetic anomalies. The shape of the basin revealed by our interpretations is different from past interpretations, broadening its areal extent while confining the deepest parts to an area along the modern San Jacinto fault, west of the city of San Bernardino. Through these geophysical observations and related geologic information, we propose a model for the development of the basin. The San Jacinto fault-related strike-slip displacements started on fault strands in the basin having a stepping geometry thus forming a pull-apart graben, and finally cut through the graben in a simpler, bending geometry. In this model, the San Bernardino strand of the San Andreas Fault has little influence on the formation of the basin. The deep, central part of the basin resembles classic pull-apart structures and our model describes a high level of detail for this structure that can be compared to other pull-apart structures as well as analog and numerical models in order to better understand timing and kinematics of pull-apart basin formation. Copyright 2004 by the American Geophysical Union.

Anderson, M.; Matti, J.; Jachens, R.

2004-01-01

130

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

131

Rate Analysis of Two Photovoltaic Systems in San Diego  

Energy Technology Data Exchange (ETDEWEB)

Analysts have found increasing evidence that rate structure has impacts on the economics of solar systems. This paper uses 2007 15-minute interval photovoltaic (PV) system and load data from two San Diego City water treatment facilities to illustrate impacts of different rate designs. The comparison is based on rates available in San Diego at the time of data collection and include proportionately small to large demand charges (relative to volumetric consumption), and varying on- and off- peak times. Findings are twofold for these large commercial systems: 1) transferring costs into demand charges does not result in savings and 2) changes in peak times do not result in a major cost difference during the course of a year. While lessons learned and discussion on rate components are based on the findings, the applicability is limited to buildings with similar systems, environments, rate options, and loads.

Doris, E.; Ong, S.; Van Geet, O.

2009-07-01

132

San Francisco Aerial Photographs 1938  

Science.gov (United States)

Have you ever wanted to fly over San Francisco in the year 1938? Well, now you can in a manner of speaking. Recently, the David Rumsey Historical Map Collection website digitized 164 large format, black and white, vertical aerial photographs taken by Harrison Ryker, a pioneer in aerial photography. The photos are quite remarkable, and visitors can zoom in to see such details as the paint striping on a basketball court. Visitors can peer out over the Ferry Terminal Building, the long-gone Mission Bay Roundhouse, and Hunters Point. The site also contains a detailed biographical sketch of Harrison Ryker, complete with a few of the advertisements for his own products, like the M-11 Stereoscope. Finally, visitors can also save specific images for future references.

133

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."

134

Moving Towards SAN Storage: An Enterprise Perspective  

Directory of Open Access Journals (Sweden)

Full Text Available 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 Server Attached Storage (SAS and Network Attached Storage (NAS use disks directly attached to servers over a Small Computer Systems Interface (SCSI bus. However, these have limited capabilities keeping in view the rapidly expanding storage needs. The SAN technology holds great promises to be used for enterprises where issues like data availability, serviceability, consolidation of storage and reliability are major concerns. It can provide high speed data transfer with many other storage services, backboned with a high speed Fibre Channel (FC. Storage-area networks are also more popular and efficient way of building large storage systems both in an enterprise environment and for multi-domain storage service providers. SAN design and implementation requires careful analysis before SAN can be used as an enterprise storage solution. In this paper we provide an overview of SAN technology from the view point of building large storage systems in an enterprise environment. We also discuss on return on investment (ROI which can justify the adoption of SAN in an enterprise. Further, it compares two specific technologies, namely, FC SAN and IP SAN. In the sequel different design considerations are made to recommend suitable SAN implementations in order to meet the requirements of any enterprise.

rabi prasad padhy

2012-08-01

135

Late Quaternary slip rate gradient defined using high-resolution topography and Be-10 dating of offset landforms on the southern San Jacinto Fault zone, California  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Recent studies suggest the San Jacinto fault zone may be the dominant structure accommodating PA-NA relative plate motion. However, because the late Quaternary slip history of the southern San Andreas fault system is insufficiently understood, it is difficult to evaluate the partitioning of deformation across the plate boundary and its evolution. Landforms displaced by the Clark fault of the southern San Jacinto f...

Blisniuk, K.; Rockwell, T.; Owen, L. A.; Oskin, M.; Lippincott, C.; Caffee, M. W.; Dortch, J.

2010-01-01

136

Interaction of the san jacinto and san andreas fault zones, southern california: triggered earthquake migration and coupled recurrence intervals.  

Science.gov (United States)

Two lines of evidence suggest that large earthquakes that occur on either the San Jacinto fault zone (SJFZ) or the San Andreas fault zone (SAFZ) may be triggered by large earthquakes that occur on the other. First, the great 1857 Fort Tejon earthquake in the SAFZ seems to have triggered a progressive sequence of earthquakes in the SJFZ. These earthquakes occurred at times and locations that are consistent with triggering by a strain pulse that propagated southeastward at a rate of 1.7 kilometers per year along the SJFZ after the 1857 earthquake. Second, the similarity in average recurrence intervals in the SJFZ (about 150 years) and in the Mojave segment of the SAFZ (132 years) suggests that large earthquakes in the northern SJFZ may stimulate the relatively frequent major earthquakes on the Mojave segment. Analysis of historic earthquake occurrence in the SJFZ suggests little likelihood of extended quiescence between earthquake sequences. PMID:17818388

Sanders, C O

1993-05-14

137

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

138

California State Waters Map Series: offshore of San Gregorio, California  

Science.gov (United States)

In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California's State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, and visualization of swath sonar data, acoustic backscatter, seafloor video, seafloor photography, high-resolution seismic-reflection profiles, and bottom-sediment sampling data. The map products display seafloor morphology and character, identify potential marine benthic habitats, and illustrate both the surficial seafloor geology and shallow (to about 100 m) subsurface geology. The Offshore of San Gregorio map area is located in northern California, on the Pacific coast of the San Francisco Peninsula about 50 kilometers south of the Golden Gate. The map area lies offshore of the Santa Cruz Mountains, part of the northwest-trending Coast Ranges that run roughly parallel to the San Andreas Fault Zone. The Santa Cruz Mountains lie between the San Andreas Fault Zone and the San Gregorio Fault system. The nearest significant onshore cultural centers in the map area are San Gregorio and Pescadero, both unincorporated communities with populations well under 1,000. Both communities are situated inland of state beaches that share their names. No harbor facilities are within the Offshore of San Gregorio map area. The hilly coastal area is virtually undeveloped grazing land for sheep and cattle. The coastal geomorphology is controlled by late Pleistocene and Holocene slip in the San Gregorio Fault system. A westward bend in the San Andreas Fault Zone, southeast of the map area, coupled with right-lateral movement along the San Gregorio Fault system have caused regional folding and uplift. The coastal area consists of high coastal bluffs and vertical sea cliffs. Coastal promontories in the northern and southern parts of the map area are the result of right-lateral motion on strands of the San Gregorio Fault system. In the south, headlands near Pescadero Point have been uplifted by motion along the west strand of the San Gregorio Fault (also called the Frijoles Fault), which separates rocks of the Pigeon Point Formation south of the fault from rocks of the Purisima Formation north of the fault. The regional uplift in this map area has caused relatively shallow water depths within California's State Waters and, thus, little accommodation space for sediment accumulation. Sediment is observed offshore in the central part of the map area, in the shelter of the headlands north of the east strand of the San Gregorio Fault (also called the Coastways Fault) around Miramontes Point (about 5 km north of the map area) and also on the outer half of the California's State Waters shelf in the south where depths exceed 40 m. Sediment in the outer shelf of California's State Waters is rippled, indicating some mobility. The Offshore of San Gregorio map area lies within the cold-temperate biogeographic zone that is called either the "Oregonian province" or the "northern California ecoregion." This biogeographic province is maintained by the long-term stability of the southward-flowing California Current, an eastern limb of the North Pacific subtropical gyre that flows from Oregon to Baja California. At its midpoint off central California, the California Current transports subarctic surface (0–500 m deep) waters southward, about 150 to 1,300 km from shore. Seasonal northwesterly winds that are, in part, responsible for the California Current, generate coastal upwelling. The south end of the Oregonian province is at Point Conception (about 350 km south of the map area), although its associated phylogeographic group of marine fauna may extend beyond to the area offshore of Los Angeles in southern California. The ocean off of central California has experienced a warming over the last 50 years that is driving an ecosystem shift away from the productive subarctic r

Cochrane, Guy R.; Dartnell, Peter; Greene, H. Gary; Watt, Janet T.; Golden, Nadine E.; Endris, Charles A.; Phillips, Eleyne L.; Hartwell, Stephen R.; Johnson, Samuel Y.; Kvitek, Rikk G.; Erdey, Mercedes D.; Bretz, Carrie K.; Manson, Michael W.; Sliter, Ray W.; Ross, Stephanie L.; Dieter, Bryan E.; Chin, John L.; Cochran, Susan A.

2014-01-01

139

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 Netherld 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.

140

33 CFR 165.776 - Security Zone; Coast Guard Base San Juan, San Juan Harbor, Puerto Rico  

Science.gov (United States)

...Security Zone; Coast Guard Base San Juan, San Juan Harbor, Puerto Rico 165.776 Section 165.776 Navigation and Navigable...Security Zone; Coast Guard Base San Juan, San Juan Harbor, Puerto Rico (a) Location . The following area is a security zone: All waters...

2010-07-01

 
 
 
 
141

33 CFR 165.1141 - Safety Zone; San Clemente 3 NM Safety Zone, San Clemente Island, CA.  

Science.gov (United States)

...Safety Zone; San Clemente 3 NM Safety Zone, San Clemente Island, CA. 165.1141 Section 165.1141 Navigation and Navigable...Safety Zone; San Clemente 3 NM Safety Zone, San Clemente Island, CA. (a) Location. The following area is a safety...

2010-07-01

142

76 FR 10945 - San Luis Trust Bank, FSB, San Luis Obispo, CA; Notice of Appointment of Receiver  

Science.gov (United States)

...Office of Thrift Supervision San Luis Trust Bank, FSB, San Luis Obispo, CA; Notice of Appointment of Receiver Notice is hereby given...Corporation as sole Receiver for San Luis Trust Bank, FSB, San Luis Obispo, California, (OTS No. 15051) on February 18, 2011....

2011-02-28

143

Computerized Bus Routing in San Francisco.  

Science.gov (United States)

A computerized routing and scheduling system for the San Francisco Public Schools includes the batch processing of bus route assignments and schedules for all schools and the online terminal processing of daily changes. (Author/MLF)

Caswell, Peter J.; Jungherr, J. Anton

1979-01-01

144

Alien in Wonderland. Over Tamara Van San  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The article presents the work of the young Belgian artist Tamara Van San, which is seen in the context of the history of modern art and of recent cultural analysis inspired by Lacanian psychoanalysis.

Spinoy, Erik

2009-01-01

145

San Jacinto Tries Management by Objectives  

Science.gov (United States)

San Jacinto, California, has adopted a measurable institutional objectives approach to management by objectives. Results reflect, not only improved cost effectiveness of community college education, but also more effective educational programs for students. (Author/WM)

Deegan, William

1974-01-01

146

Radon emanation on San Andreas Fault  

International Nuclear Information System (INIS)

It is stated that subsurface radon emanation monitored in shallow dry holes along an active segment of the San Andreas fault in central California shows spatially coherent large temporal variations that seem to be correlated with local seismicity. (author)

147

Adopt-A-School San Diego Style.  

Science.gov (United States)

Provides guidelines for establishing an Adopt-a-School program, a cooperative venture between government agencies, businesses and schools, based on a program in San Diego. Summarizes benefits and program activities. (KH)

Journal of Children in Contemporary Society, 1984

1984-01-01

148

HISTORICAL ECOTOXICOLOGICALASSESSMENT OF SAN JUAN ECOSYSTEM, SANTIAGO DE CUBA, CUBA  

Directory of Open Access Journals (Sweden)

Full Text Available Currently, the environmental decision-making related to watershed preservation is oriented under the precepts of an historical environmental assessment. The objective of this research was to conduct a historical ecotoxicological assessment of the San Juan de Santiago de Cuba ecosystem. This was considered a systematic environmental monitoring which ran from 2010 to 2013, made q?uarterly. Physicochemical parameters such as electrical conductivity, total alkalinity, total hardness, pH, total solids, dissolved oxygen, biochemical oxygen demand and chemical oxygen demand were determined. All parameters of environmental risk prediction were performed using the GECOTOX program. The concentrations of Cu, Zn, Pb and Cd on three target organs (brain, gills and liver in the biomonitor adult Gambusia punctata (Poecilidae were analyzed. In this species, the effect of total protein and enzymatic activity of acetylcholinesterase as biomarkers were evaluated. In general, the parameters were outside the values set used by the Cuban quality standards. The GECOTOX program said that the waters of the San Juan ecosystem presented a high rate of risk. The highest concentrations of metals were determined in the gills, liver and brain, respectively. Biomarker values w? ere high, being higher for females. Finally, it was concluded that from one year to another all responses were ascending; thus, the San Juan ecosystem presented ecotoxicological effects in time.

Argota, George

2013-07-01

149

Geothermal resource assessment of western San Luis Valley, Colorado  

Energy Technology Data Exchange (ETDEWEB)

The Colorado Geological Survey initiated and carried out a fully integrated assessment program of the geothermal resource potential of the western San Luis Valley during 1979 and 1980. The San Luis Valley is a large intermontane basin located in southcentral Colorado. While thermal springs and wells are found throughout the Valley, the only thermal waters found along the western part of the Valley are found at Shaw Warm Springs which is a relatively unused spring located approximately 6 miles (9.66 km) north of Del Norte, Colorado. The waters at Shaws Warm Spring have a temperature of 86 F (30 C), a discharge of 40 gallons per minute and contain approximately 408 mg/l of total dissolved solids. The assessment program carried out din the western San Luis Valley consisted of: soil mercury geochemical surveys; geothermal gradient drilling; and dipole-dipole electrical resistivity traverses, Schlumberger soundings, Audio-magnetotelluric surveys, telluric surveys, and time-domain electro-magnetic soundings and seismic surveys. Shaw Warm Springs appears to be the only source of thermal waters along the western side of the Valley. From the various investigations conducted the springs appear to be fault controlled and is very limited in extent. Based on best evidence presently available estimates are presented on the size and extent of Shaw Warm Springs thermal system. It is estimated that this could have an areal extent of 0.63 sq. miles (1.62 sq. km) and contain 0.0148 Q's of heat energy.

Zacharakis, Ted G.; Pearl, Richard Howard; Ringrose, Charles D.

1983-01-01

150

SANS observations on weakly flocculated dispersions  

DEFF Research Database (Denmark)

Structural changes occurring in colloidal dispersions of poly-(methyl metacrylate) (PMMA) particles, sterically stabilized with poly-(12-hydroxystearic acid) (PHSA), while varying the solvent quality, temperature and shear rate, are investigated by small-angle neutron scattering (SANS). For a moderately concentrated dispersion in a marginal solvent the transition on cooling from the effective stability to a weak attraction is monitored, The degree of attraction is determined in the framework of the sticky spheres model (SSM), SANS and rheological results are correlated.

Mortensen, K.

1997-01-01

151

Temperature dependent SANS from ferritin and apoferritin  

International Nuclear Information System (INIS)

SANS from deuterated ferritin and apoferritin solutions over the temperature range 5 to 300 K is presented. Above the freezing point the SANS is well described by Percus-Yevick hard sphere packing. On freezing, highly correlated, partially crystallised, clusters of the proteins form and grow with decreasing temperature. The resulting scattering, characterised by a squared Lorentzian structure factor, indicates a spatial extent of 1000 A for the protein clusters. (orig.)

152

SAFOD Penetrates the San Andreas Fault  

Digital Repository Infrastructure Vision for European Research (DRIVER)

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 ...

Zoback, Mark D.

2006-01-01

153

Capteurs passifs sans fil à transduction électromagnétique  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Depuis la fin des années 1990, l' " Intelligence Ambiante " fait l'objet d'intenses recherches dans le monde avec l'objectif d'interconnecter (sans fil) de très nombreux objets ntelligents comme des capteurs, des tags, des téléphones mobiles, ..... Dans ce contexte, les réseaux de capteurs sans fils émergent comme une technologie clé pour de très nombreuses applications (domestiques, santé, nvironnement, industrie, militaire, ...). Dans cet article, nous présentons une vue d'ensembl...

Pons, Patrick; Aubert, Herve?; Menini, Philippe; Tentzeris, Manos

2013-01-01

154

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.

2014-04-01

155

San Onofre unit 1 water hammer event  

International Nuclear Information System (INIS)

San Onofre Unit 1 experienced a severe water hammer event in the main feedwater (MFW) system on November 21, 1985. Southern California Edison (SCE) performed an extensive investigation and evaluation to determine the cause and effect of the event. The most significant finding was that five MFW system check valves had degraded to an inoperable condition prior to the event. The inoperable check valves caused the formation of a water hammer in the B MFW line which, in turn, caused a reactor trip transient to escalate into a more serious event. The water hammer created a MFW system leak which affected the capability of the auxiliary feedwater system to perform its safety-related shutdown function. Moderate damage was sustained in the MFW and Condensate system including the rupture of the evaporator heater and flash chamber shell (a 21-foot long split in the weld seam). In spite of the MFW system leak and damage, the inherent redundance and defense in depth built into the plant allowed the operators to shut down and stabilize the plant in a timely and orderly manner

156

Arquitectura formativa en San Pedro de Atacama  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish Abstract in spanish En este artículo se caracterizan arquitectónicamente los sitios Tulor-1, Calar y Ghatchi-2C aplicando una metodología sistemática ya probada en otros asentamientos habitacionales del área. En forma complementaria se presentan los antecedentes disponibles sobre arquitectura del Período Formativo en l [...] a región de San Pedro de Atacama como en espacios contiguos, para discutir la evolución del patrón aldeano y sus implicancias en el sistema de asentamiento. Se sugiere que factores rituales fueron importantes en los inicios del desarrollo arquitectónico en un contexto de sociedades eminentemente pastoriles, para luego evaluar el rol que estos asentamientos cumplieron una vez consolidados en este nuevo paisaje cultural. Abstract in english This paper characterizes the architecture of three sites (Tulor-1, Calar and Ghatchi-2C) by contrasting our results with the records already available about the Formative Period's architecture in the region and nearby places. This enable us to discuss the evolution of villager settlement patterns an [...] d its impact in the overall settlement system. The importance ritual factors seemed to have in the development of architecture is linked to a social context eminently composed by shepherd societies and the relatively important role played by their settlements as they consolidated into enclaves of a new cultural landscape.

Leonor, Adán A; Simón, Urbina A.

157

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

Directory of Open Access Journals (Sweden)

Full Text Available 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.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 Camilo 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

2012-06-01

158

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.

2012-06-01

159

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.

160

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.

 
 
 
 
161

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.

2014-04-01

162

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.

2013-12-01

163

Una Visita al Viejo San Juan (A Visit to Old San Juan).  

Science.gov (United States)

Written in Spanish, this black and white illustrated booklet provides a tour of Old San Juan, Puerto Rico's oldest and most historic city. Brief historical information is provided on the Perro de San Jeronimo, a statue of a barking dog found in front of the Castillo; Plaza de Colon, a small plaza dedicated to Christopher Columbus; the Catedral de…

Cabello, Victor; And Others

164

The Economic Impact of San Juan College on San Juan County, New Mexico, 1991-92.  

Science.gov (United States)

A study was conducted of the economic impact of San Juan College (SJC) in Farmington, New Mexico, on businesses and employment in San Juan County during fiscal year (FY) 1991-92. The five components used to measure the college's tangible economic impact on the local community were SJC's total expenditures in FY 1991-92 used to buy goods and…

Clark, Mary Jo

165

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.

166

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

167

Seismic techniques in uranium exploration - San Juan Basin, New Mexico  

International Nuclear Information System (INIS)

The 5.5 mile-long segment of a seismic line illustrated in the report is part of a seismic survey near Crownpoint, New Mexico. It may be used as a reference line for future uranium-related seismic studies, as it crosses two uranium orebodies and is in an area that has been extensively drilled and studied. It also demonstrates the seismic character of the uranium-bearing Upper Jurassic Morrison Formation in the southern San Juan Basin. Seismic techniques may be used to locate the drilling targets and thus provide a more efficient means for uranium exploration. Geology, seismic interpretation and acquisition are discussed. 14 references, 7 figures

168

Periodic pulsing of characteristic microearthquakes on the San Andreas fault.  

Science.gov (United States)

Deep fault slip information from characteristically repeating microearthquakes reveals previously unrecognized patterns of extensive, large-amplitude, long-duration, quasiperiodic repetition of aseismic events along much of a 175-kilometer segment of the central San Andreas fault. Pulsing occurs both in conjunction with and independent of transient slip from larger earthquakes. It extends to depths of approximately 10 to 11 kilometers but may be deeper, and it may be related to similar phenomena occurring in subduction zones. Over much of the study area, pulse onset periods also show a higher probability of larger earthquakes, which may provide useful information for earthquake forecasting. PMID:14716011

Nadeau, Robert M; McEvilly, Thomas V

2004-01-01

169

Sediment characteristics in the San Antonio River Basin downstream from San Antonio, Texas, and at a site on the Guadalupe River downstream from the San Antonio River Basin, 1966-2013  

Science.gov (United States)

San Antonio and surrounding municipalities in Bexar County, Texas, are in a rapidly urbanizing region in the San Antonio River Basin. The U.S. Geological Survey, in cooperation with the San Antonio River Authority and the Texas Water Development Board, compiled historical sediment data collected between 1996 and 2004 and collected suspended-sediment and bedload samples over a range of hydrologic conditions in the San Antonio River Basin downstream from San Antonio, Tex., and at a site on the Guadalupe River downstream from the San Antonio River Basin during 2011–13. In the suspended-sediment samples collected during 2011–13, an average of about 94 percent of the particles was less than 0.0625 millimeter (silt and clay sized particles); the 50 samples for which a complete sediment-size analysis was performed indicated that an average of about 69 percent of the particles was less than 0.002 millimeter. In the bedload samples collected during 2011–13, an average of 51 percent of sediment particles was sand-sized particles in the 0.25–0.5 millimeter-size range. In general, the loads calculated from the samples indicated that bedload typically composed less than 1 percent of the total sediment load. A least-squares log-linear regression was developed between suspended-sediment concentration and instantaneous streamflow and was used to estimate daily mean suspended-sediment loads based on daily mean streamflow. The daily mean suspended-sediment loads computed for each of the sites indicated that during 2011–12, the majority of the suspended-sediment loads originated upstream from the streamflow-gaging station on the San Antonio River near Elmendorf, Tex. A linear regression relation was developed between turbidity and suspended-sediment concentration data collected at the San Antonio River near Elmendorf site because the high-resolution data can facilitate understanding of the complex suspended-sediment dynamics over time and throughout the river basin.

Crow, Cassi L.; Banta, J. Ryan; Opsahl, Stephen P.

2014-01-01

170

Chlorinated hydrocarbon pesticides and polychlorinated biphenyls in sediment cores from San Francisco Bay  

Science.gov (United States)

Sediment cores of known chronology from Richardson and San Pablo Bays in San Francisco Bay, CA, were analyzed for a suite of chlorinated hydrocarbon pesticides and polychlorinated biphenyls to reconstruct a historic record of inputs. Total DDTs (DDT = 2,4'- and 4,4'-dichlorodiphenyltrichloroethane and the metabolites, 2,4'- and 4,4'-DDE, -DDD) range in concentration from 4-21 ng/g and constitute a major fraction (> 84%) of the total pesticides in the top 70 cm of Richardson Bay sediment. A subsurface maximum corresponds to a peak deposition date of 1969-1974. The first measurable DDT levels are found in sediment deposited in the late 1930's. The higher DDT inventory in the San Pablo relative to the Richardson Bay core probably reflects the greater proximity of San Pablo Bay to agricultural activities in the watershed of the Sacramento and San Joaquin rivers. Total polychlorinated biphenyls (PCBs) occur at comparable levels in the two Bays (< 1-34 ng/g). PCBs are first detected in sediment deposited during the 1930's in Richardson Bay, about a decade earlier than the onset of detectable levels of DDTs. PCB inventories in San Pablo Bay are about a factor of four higher in the last four decades than in Richardson Bay, suggesting a distribution of inputs not as strongly weighed towards the upper reaches of the estuary as DDTs. The shallower subsurface maximum in PCBs compared to DDT in the San Pablo Bay core is consistent with the imposition of drastic source control measures four these constituents in 1970 and 1977 respectively. The observed decline in DDT and PCB levels towards the surface of both cores is consistent with a dramatic drop in the input of these pollutants once the effect of sediment resuspension and mixing is taken into account.

Venkatesan, M.I.; De Leon, R. P.; VanGeen, A.; Luoma, S.N.

1999-01-01

171

Scientific Drilling Into the San Andreas Fault Zone —An Overview of SAFOD’s First Five Years  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The San Andreas Fault Observatory at Depth (SAFOD)was drilled to study the physical and chemical processes controlling faulting and earthquake generation along an active, plate-bounding fault at depth. SAFOD is located near Parkfield, California and penetrates a section of the fault that is moving due to a combination of repeating microearthquakes and fault creep. Geophysical logs define the SanAndreas Fault Zone to be relatively broad (~200 m), containing several discrete zones only 2–3 m ...

2011-01-01

172

Scientific Drilling Into the San Andreas Fault Zone — An Overview of SAFOD’s First Five Years  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The San Andreas Fault Observatory at Depth (SAFOD)was drilled to study the physical and chemical processes controlling faulting and earthquake generation along an active, plate-bounding fault at depth. SAFOD is located near Parkfield, California and penetrates a section of the fault that is moving due to a combination of repeating microearthquakes and fault creep. Geophysical logs define the SanAndreas Fault Zone to be relatively broad (~200 m), containing several discrete zones only 2–3 m ...

Stephen Hickman; Mark Zoback; William Ellsw

2011-01-01

173

75 FR 42014 - Proposed Amendment of Class E Airspace; San Clemente, CA  

Science.gov (United States)

...Amendment of Class E Airspace; San Clemente, CA AGENCY: Federal Aviation Administration...modify Class E airspace at San Clemente, CA. Decommissioning of the San Clemente Island...Fredrick Sherman Field), San Clemente CA. The airspace would be reconfigured...

2010-07-20

174

75 FR 61611 - Modification of Class E Airspace; San Clemente, CA  

Science.gov (United States)

...Modification of Class E Airspace; San Clemente, CA AGENCY: Federal Aviation Administration...amend Class E airspace at San Clemente, CA. Decommissioning of the San Clemente Island...controlled airspace at San Clemente, CA (75 FR 42014). Interested parties...

2010-10-06

175

SAAF: SANS data Analysis using Analytical Functions  

Energy Technology Data Exchange (ETDEWEB)

The recently completed Extended Q-Range Small Angle Scattering Diffractometer (EQ-SANS) has put the focus on its software needs with renewed urgency. In a series of efforts, we aim at providing a complete set of software solutions on the EQ-SANS instrument. These programs include initial data processing, data correction and reduction, analytical model fitting to the scattering data, Monte Carlo simulation for structure determination, and virtual instrument simulation for experiment planning. SAAF is one such program for analytical data modeling. It takes the reduced EQ-SANS data and allows users to fit the data to analytical models. These models are easy to write. They can either be user written, or from the pre-supplied model library.

Zhao, Jinkui [ORNL

2011-01-01

176

Salt Ponds, South San Francisco Bay  

Science.gov (United States)

higher resolution 1000 pixel-wide image The red and green colors of the salt ponds in South San Francisco Bay are brilliant visual markers for astronauts. The STS-111 crew photographed the bay south of the San Mateo bridge in June, 2002. This photograph is timely because a large number of the salt ponds (more than 16,500 acres) that are owned by Cargill, Inc. will be sold in September for wetlands restoration-a restoration project second in size only to the Florida Everglades project. Rough boundaries of the areas to be restored are outlined on the image. Over the past century, more than 80% of San Francisco Bay's wetlands have been filled and developed or diked off for salt mining. San Francisco Bay has supported salt mining since 1854. Cargill has operated most of the bay's commercial salt ponds since 1978, and had already sold thousands of acres to the State of California and the Don Edwards National Wildlife Refuge. This new transaction will increase San Francisco Bay's existing tidal wetlands by 50%. The new wetlands, to be managed by the California Department of Fish and Game and the U.S. Fish and Wildlife Service, will join the Don Edwards National Wildlife Refuge, and provide valuable habitat for birds, fish and other wildlife. The wetlands will contribute to better water quality and flood control in the bay, and open up more coastline for public enjoyment. Additional information: Cargill Salt Ponds (PDF) Turning Salt Into Environmental Gold Salt Ponds on Way to Becoming Wetlands Historic Agreement Reached to Purchase San Francisco Bay Salt Ponds Astronaut photograph STS111-376-3 was provided by the Earth Sciences and Image Analysis Laboratory at Johnson Space Center. Additional images taken by astronauts and cosmonauts can be viewed at the NASA-JSC Gateway to Astronaut Photography of Earth

2002-01-01

177

Fundamento y aproximación Metodológica del Estudio de peces del Río San Pedro Basis and Methodological Approach for the Study of the San Pedro River Fish Fauna  

Directory of Open Access Journals (Sweden)

Full Text Available El río San Pedro corresponde al sistema fluvial que desagua la cadena de ocho lagos andinos de la cuenca del río Valdivia (Región de los Ríos. Este sistema recorre 40 km entre el desagüe del lago Riñihue y su confluencia con el río Collileufu, donde cambia de nombre a río Calle Calle. En él se proyectó construir la "Central Hidroeléctrica San Pedro", cuyo muro se ubica 14 km aguas abajo del desagüe del lago Riñihue y la cual transforma 12,5 km de río en embalse. Ello generó la necesidad de elaborar un Estudio de Impacto Ambiental, el cual fue desarrollado por el Centro de Ciencias Ambientales Eula Chile (Universidad de Concepción. En relación a la ecología del río, dicho estudio puso especial énfasis en generar el conocimiento de detalle sobre su ictiofauna, con el fin de efectuar una evaluación de impactos especie específica. En este artículo presentamos los fundamentos y aproximaciones metodológicas para llevar a cabo el estudio intensivo, cuyos resultados dan origen a esta publicación monográfica y a la descripción de la distribución, abundancia, uso de hábitat, patrones de desplazamiento, relaciones de longitud-peso, primeros estadíos de vida y estructura genética de la ictiofauna del río San Pedro.The San Pedro River is the fluvial system being drained by the chain of eight Andean lakes in the Valdivia River Basin (de los Ríos Region. This system covers 40 km from the outlet of Riñihue Lake to its confluence with the Collileufu River, where it is renamed as Calle Calle River. In the San Pedro River, the "Central Hidroeléctrica San Pedro" (San Pedro Hydroelectric Plant is planned, whose dam is located 14 km downstream from the outlet of the Riñihue Lake, which will transform 12.5 km of river in a reservoir. This generated the need for an Environmental Impact Assessment, which was developed by the Center for Environmental Sciences EULA-Chile (Universidad de Concepción. In relation to the river ecology, the study placed special emphasis on generating detailed knowledge about their ichthyofauna, in order to make a species-specific impact assessment. In this issue, we present the foundations and methodological approaches to undertake the intensive study, whose results give rise to this monograph and to the description of the distribution, abundance, habitat use, movement patterns, length-weight relationships, early life stages and genetic structure of the fish fauna of San Pedro River.

Evelyn Habit

2012-01-01

178

Fundamento y aproximación Metodológica del Estudio de peces del Río San Pedro / Basis and Methodological Approach for the Study of the San Pedro River Fish Fauna  

Scientific Electronic Library Online (English)

Full Text Available SciELO Chile | Language: Spanish Abstract in spanish El río San Pedro corresponde al sistema fluvial que desagua la cadena de ocho lagos andinos de la cuenca del río Valdivia (Región de los Ríos). Este sistema recorre 40 km entre el desagüe del lago Riñihue y su confluencia con el río Collileufu, donde cambia de nombre a río Calle Calle. En él se proy [...] ectó construir la "Central Hidroeléctrica San Pedro", cuyo muro se ubica 14 km aguas abajo del desagüe del lago Riñihue y la cual transforma 12,5 km de río en embalse. Ello generó la necesidad de elaborar un Estudio de Impacto Ambiental, el cual fue desarrollado por el Centro de Ciencias Ambientales Eula Chile (Universidad de Concepción). En relación a la ecología del río, dicho estudio puso especial énfasis en generar el conocimiento de detalle sobre su ictiofauna, con el fin de efectuar una evaluación de impactos especie específica. En este artículo presentamos los fundamentos y aproximaciones metodológicas para llevar a cabo el estudio intensivo, cuyos resultados dan origen a esta publicación monográfica y a la descripción de la distribución, abundancia, uso de hábitat, patrones de desplazamiento, relaciones de longitud-peso, primeros estadíos de vida y estructura genética de la ictiofauna del río San Pedro. Abstract in english The San Pedro River is the fluvial system being drained by the chain of eight Andean lakes in the Valdivia River Basin (de los Ríos Region). This system covers 40 km from the outlet of Riñihue Lake to its confluence with the Collileufu River, where it is renamed as Calle Calle River. In the San Pedr [...] o River, the "Central Hidroeléctrica San Pedro" (San Pedro Hydroelectric Plant) is planned, whose dam is located 14 km downstream from the outlet of the Riñihue Lake, which will transform 12.5 km of river in a reservoir. This generated the need for an Environmental Impact Assessment, which was developed by the Center for Environmental Sciences EULA-Chile (Universidad de Concepción). In relation to the river ecology, the study placed special emphasis on generating detailed knowledge about their ichthyofauna, in order to make a species-specific impact assessment. In this issue, we present the foundations and methodological approaches to undertake the intensive study, whose results give rise to this monograph and to the description of the distribution, abundance, habitat use, movement patterns, length-weight relationships, early life stages and genetic structure of the fish fauna of San Pedro River.

Evelyn, Habit; Oscar, Parra.

179

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

180

Formation of fullerene clusters in the system C{sub 60}/NMP/water by SANS  

Energy Technology Data Exchange (ETDEWEB)

Solutions of fullerenes in nitrogen-containing solvents constitute a specific class characterized by the formation of fullerene clusters. In the given work, we report the effect of cluster rearrangement in the system C{sub 60}/N-methylpyrrolidone (NMP) after addition of water (miscible with NMP) as observed by small-angle neutron scattering (SANS). The effect has a critical character and takes place if the water relative content is higher than 40%. Despite a small scattering signal, estimates of the mean scattering length density of the clusters by SANS contrast variation can be done.

Aksenov, V.L. [Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna (Russian Federation)]. E-mail: aksenov@nf.jinr.ru; Avdeev, M.V. [Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna (Russian Federation); Tropin, T.V. [Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna (Russian Federation); Korobov, M.V. [Department of Chemistry, Moscow State University (Russian Federation); Kozhemyakina, N.V. [Department of Chemistry, Moscow State University (Russian Federation); Avramenko, N.V. [Department of Chemistry, Moscow State University (Russian Federation); Rosta, L. [Research Institute for Solid State Physics and Optics, Budapest (Hungary)

2006-11-15

 
 
 
 
181

Formation of fullerene clusters in the system C60/NMP/water by SANS  

International Nuclear Information System (INIS)

Solutions of fullerenes in nitrogen-containing solvents constitute a specific class characterized by the formation of fullerene clusters. In the given work, we report the effect of cluster rearrangement in the system C60/N-methylpyrrolidone (NMP) after addition of water (miscible with NMP) as observed by small-angle neutron scattering (SANS). The effect has a critical character and takes place if the water relative content is higher than 40%. Despite a small scattering signal, estimates of the mean scattering length density of the clusters by SANS contrast variation can be done

182

El Observatorio de San Pedro Mártir: A World-Class Site for Large Telescopes  

Science.gov (United States)

This paper outlines the characteristics of San Pedro Mártir as a super site for major astronomical telescopes. The extremely dark sky, high percentage of clear nights year round, excellent seeing, low water vapor content, and related logistical matters make SPM the number one choice for major new telescope projects. Clearly, SPM is a most attractive site, affording ease of access by land, sea, and air, with significantly shorter supply lines and same day access from Santa Cruz, Pasadena, Tucson, San Diego, Mexico City, and other astronomical centers.

Wehinger, P.

2007-06-01

183

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)

184

The Church of San Miniato al Monte, Florence: Astronomical and Astrological Connections  

Science.gov (United States)

The church of San Miniato al Monte is examined in the context of interest in astrology and astronomy in early Renaissance Florence. Vitruvius emphasised the need for architects to "be acquainted with astronomy and the theory of the heavens" in his famous Ten Books of Architecture and, at San Miniato, astronomical and astrological features are combined in order to link humanity with the celestial or spiritual realm. The particular significance of Pisces and Taurus is explored in relation to Christian symbolism, raising questions about the role of astronomy and astrology in art and architecture.

Shrimplin, V.

2011-06-01

185

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

Science.gov (United States)

...this anchorage shall maintain a continuous radio watch on VHF channel 13 (156.65 MHz) and VHF channel 14 (156.70 MHz). This radio watch must be maintained by a person who...Anchorage No. 30. The portion of the Old San Joaquin River Channel bounded on the west by the...

2010-07-01

186

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

187

33 CFR 165.776 - Security Zone; Coast Guard Base San Juan, San Juan Harbor, Puerto Rico  

Science.gov (United States)

... Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone; Coast Guard Base San Juan, San Juan Harbor, Puerto Rico 165.776 Section 165.776 Navigation and Navigable Waters COAST GUARD,...

2010-07-01

188

33 CFR 110.210 - San Diego Harbor, CA.  

Science.gov (United States)

...2010-07-01 false San Diego Harbor, CA. 110.210 Section 110.210 Navigation...Grounds § 110.210 San Diego Harbor, CA. (a) The anchorage grounds...from the Commander, Naval Base, San Diego, CA. The administration of these...

2010-07-01

189

33 CFR 110.120 - San Luis Obispo Bay, Calif.  

Science.gov (United States)

...2010-07-01 2010-07-01 false San Luis Obispo Bay, Calif. 110.120 Section 110...Anchorage Areas § 110.120 San Luis Obispo Bay, Calif. (a) Area A-1. ...the water area bounded by the San Luis Obispo County wharf, the shoreline, a line...

2010-07-01

190

Uranium occurrences in the pegmatite 'Las Cuevas', province of San Luis, Argentine Republic  

International Nuclear Information System (INIS)

Mineral associations found in an uranium deposit of Sierras Pampeanas, San Luis, are considered in these papers. Damourite stands out among the uranium minerals related to uraninite and coffinite. Pyrite, marcasite and other sulphides are found together with apatite and gummite. Autunite is the uranium secondary mineral more abundant. A mineralization with epigenetic contribution by circulating solutions is suggested to the studied area. (Author)

191

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.

192

An hydroelectrical dam in the San Juan River? (Informative article ¿Una represa hidroeléctrica sobre el río San Juan? (Artículo informativo  

Directory of Open Access Journals (Sweden)

Full Text Available The author uses the geomorphological map of the San Juan River border sector to indicate the conse- quences for the border area with Costa Rica by the waters rising of the San Juan river hydroelectrical project.El autor utiliza el mapa geomorfológico del sector fronterizo al San Juan para indicar las consecuencias que un proyecto hidroeléctrico en el río San Juan tendría para el sector fronterizo con Costa Rica por la subida de las aguas represadas.

Jean Pierre Bergoeing Guida

2012-12-01

193

77 FR 54815 - Safety Zone: America's Cup World Series Regattas, San Francisco Bay; San Francisco, CA  

Science.gov (United States)

...plans to host two America's Cup World Series regattas as part of a circuit...venues. The first San Francisco World Series regattas are scheduled to occur August 21-26, 2012. The second World Series regattas are scheduled...

2012-09-06

194

SANS analysis of aqueous ionic perfluoropolyether micelles  

CERN Document Server

Preliminary SANS results of ionic chlorine terminated perfluoropolyether micelles in water are given. The experimental spectra have been analyzed by a two-shell ellipsoidal model for the micellar form factor and a screened Coulombic plus hard-sphere repulsion potential for the structure factor. (orig.)

Gambi, C M C; Chittofrati, A; Pieri, R; Baglioni, P; Teixeira, J

2002-01-01

195

San Francisco, California: Solar in Action (Brochure)  

Energy Technology Data Exchange (ETDEWEB)

This brochure provides an overview of the challenges and successes of San Francisco, CA, a 2007 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

196

SAN PEDRO VEGETATION MAP GRID DATA  

Science.gov (United States)

This data set is a digital vegetation map of the San Pedro Riparian National Conservation Area and Babocomari River. The map was produced by manual interpretation of true-color, stereo aerial photography flown in November 2000. Standard U.S. Geological Survey Digital Orthophoto...

197

SAN PEDRO VEGETATION MAP VECTOR DATA  

Science.gov (United States)

This data set is a digital vegetation map of the San Pedro Riparian National Conservation Area and Babocomari River. The map was produced by manual interpretation of true-color, stereo aerial photography flown in November 2000. Standard U.S. Geological Survey Digital Orthophoto...

198

Persistence and Attrition at San Juan College.  

Science.gov (United States)

A project was undertaken at San Juan College, in New Mexico, to examine findings from several studies of student persistence and retention to shed light on factors influencing persistence at the college. The project took into account several definitions of persistence, including re-enrollment in the subsequent semester (semester to semester),…

Moore, Nelle

199

San Antonio, Texas: Solar in Action (Brochure)  

Energy Technology Data Exchange (ETDEWEB)

This brochure provides an overview of the challenges and successes of San Antonio, TX, 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

200

Pinturas Murales en San Marcos de Salamanca  

Directory of Open Access Journals (Sweden)

Full Text Available En los primeros días de setiembre se iniciaron unas obras de repaso en el tejado de la iglesia de San Marcos, aprovechando el tiempo del cierre obligado del templo para realizar algunas reparaciones que condujeron al párroco don José Marcos ayudado por el coadjutor don Leandro Lozano, a interesantes hallazgos que dan aún más valor artístico a esta interesante iglesia.

Julián ÁLVAREZ VILLAR

2009-10-01

 
 
 
 
201

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

202

Olmec civilization, veracruz, Mexico: dating of the san lorenzo phase.  

Science.gov (United States)

Archeological excavations at San Lorenzo Tenochtitlan, Veracruz, show that the Olmec sculptures of this zone are associated with the San Lorenzo phase, which can be placed in the Early Formative period (1500-800 B.C.) on the basis of ceramic comparisons. Five of six radiocarbon dates for the San Lorenzo phase fall within the 1200-900 B.C. span. The San Lorenzo phase therefore marks the beginning of Olmec civilization, and the sites forming the San Lorenzo Tenochtitlan group represent the oldest civilized communities known in Mexico or Central America. PMID:17839608

Coe, M D; Diehl, R A; Stuiver, M

1967-03-17

203

Lithosphere-asthenosphere interactions near the San Andreas fault  

Science.gov (United States)

We decipher the strain history of the upper mantle in California through the comparison of the long-term finite strain field in the mantle and the surface strain-rate field, respectively inferred from fast polarization directions of seismic phases (SKS and SKKS), and Global Positioning System (GPS) surface velocity fields. We show that mantle strain and surface strain-rate fields are consistent in the vicinity of San Andreas Fault (SAF) in California. Such an agreement suggests that the lithosphere and strong asthenosphere have been deformed coherently and steadily since >1 Ma. We find that the crustal stress field rotates (up to 40° of rotation across a 50 km distance from 50° relative to the strike of the SAF, in the near-field of SAF) from San Francisco to the Central Valley. Both observations suggest that the SAF extends to depth, likely through the entire lithosphere. From Central Valley towards the Basin and Range, the orientations of GPS strain-rates, shear wave splitting measurements and seismic stress fields diverge indicating reduced coupling or/and shallow crustal extension and/or presence of frozen anisotropy.

Chamberlain, C. J.; Houlié, N.; Bentham, H. L. M.; Stern, T. A.

2014-08-01

204

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

205

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.

2009-04-01

206

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.)

207

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

208

San Cristobal Galapagos wind power project  

Energy Technology Data Exchange (ETDEWEB)

The San Cristobal Galapagos wind power project was described. With its unique endemic flora and fauna, the Galapagos Islands were declared a world heritage site and marine reserve. The San Cristobal wind project was initiated in 1999 to reduce the environmental impacts of energy use on the island, and has been operational since 2007. Three 800 kW wind turbines have been installed in order to reduce 52 per cent of the island's diesel generation. The project's high penetration wind-diesel hybrid system included 300 kW diesel generators, a 13.2 kV utility distribution system, and six 300 kW wind turbines. The project is located outside of Galapagos Petrel flight paths and nesting areas. Turbines from a factory in Spain were used. The wind turbine foundation was constructed from concrete sand and stone mined on the island. Photographs of the installation process were included. tabs., figs.

Tolan, J. [Sgurr Energy, Glasgow (United Kingdom)

2009-07-01

209

Carte du Ciel, San Fernando zone  

Science.gov (United States)

An updated summary of a future large astrometric catalogue is presented, based on the two most important astrometric projects carried out by the Real Instituto y Observatorio de la Armada de San Fernando (ROA). The goal is to make a catalogue of positions and proper motions based on ROA's Cart du Ciel (CdC) and the Astrographic Catalogue (AC) San Fernando zone plates, and the HAMC2 meridian circle catalogue. The CdC and AC plates are being reduced together to provide first-epoch positions while HAMC2 will provide second-epoch ones. New techniques have been applied, that range from using a commercial flatbed scanner to the proper reduction schemes to avoid systematics from it. Only thirty plates (out of 540) remain to be processed, due to scanning problems that are being solved.

Abad, C.

2014-06-01

210

Bismuth ochers from San Diego Co., California  

Science.gov (United States)

The chief points brought out in this paper may be briefly summarized as follows: (1) The existence of natural Bi2O3 has not been established. (2) Natural bismite or bismuth ocher, when pure, is more probably a bismuth hydroxide. (3) The bismuth ochers from San Diego County, California, are either a bismuth hydroxide or bismuth vanadate, pucherite, or mixtures of these two. (4) Pucherite has been found noncrystallin and determined for the first time in the United States.

Schaller, W. T.

1911-01-01

211

A fatal irradiator accident in San Salvador  

International Nuclear Information System (INIS)

A summary is given of a radiation accident involving personnel at an industrial irradiation facility for sterilising pre-packaged medical products in San Salvador. The medical treatment of the personnel is briefly described. The past accident review highlighted the fact that the accident is a classic example of what can happen, even to a plant with initially good safety features, when it is operated without the benefits of a supporting radiological protection infrastructure or any regulatory control. (U.K.)

212

San Diego Coastal Ocean Observing System (SDCOOS)  

Science.gov (United States)

SDCOOS provides a gateway for up-to-date oceanographic, weather, and water quality data for the San Diego coastal region from Oceanside to the International Border. The SDCOOS site features webcams, an interactive satellite picture and maps of the local coast, easy to access archived data, and complete meteorological and oceanographic data from Imperial Beach. Also available are bathymetry and satellite maps for the area, as well as wind and wave forecasts.

2011-07-07

213

The San Joaquin Valley Westside Perspective  

Energy Technology Data Exchange (ETDEWEB)

Salt management has been a challenge to westside farmerssince the rapid expansion of irrigated agriculture in the 1900 s. Thesoils in this area are naturally salt-affected having formed from marinesedimentary rocks rich in sea salts rendering the shallow groundwater,and drainage return flows discharging into the lower reaches of the SanJoaquin River, saline. Salinity problems are affected by the importedwater supply from Delta where the Sacramento and San Joaquin Riverscombine. Water quality objectives on salinity and boron have been inplace for decades to protect beneficial uses of the river. However it wasthe selenium-induced avian toxicity that occurred in the evaporationponds of Kesterson Reservoir (the terminal reservoir of a planned but notcompleted San Joaquin Basin Master Drain) that changed public attitudesabout agricultural drainage and initiated a steady stream ofenvironmental legislation directed at reducing non-point source pollutionof the River. Annual and monthly selenium load restrictions and salinityand boron Total Maximum Daily Loads (TMDLs) are the most recent of thesepolicy initiatives. Failure by both State and Federal water agencies toconstruct a Master Drain facility serving mostly west-side irrigatedagriculture has constrained these agencies to consider only In-Valleysolutions to ongoing drainage problems. For the Westlands subarea, whichhas no surface irrigation drainage outlet to the San Joaquin River,innovative drainage reuse systems such as the Integrated Farm DrainageManagement (IFDM) offer short- to medium-term solutions while morepermanent remedies to salt disposal are being investigated. Real-timesalinity management, which requires improved coordination of east-sidereservoir releases and west-side drainage, offers some relief toGrasslands Basin farmers and wetland managers - allowing greater salinityloading to the River than under a strict TMDL. However, currentregulation drives a policy that results in a moratorium on all drainagereturn flows.

Quinn, Nigel W.T.; Linneman, J. Christopher; Tanji, Kenneth K.

2006-03-27

214

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...

Ward, S. N.; Goes, S. D. B.

1994-01-01

215

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

216

Geochronology in the San Juan Mountains (Advanced)  

Science.gov (United States)

This is a mathematically more advanced version of the Ages of Rocks and the Earth activity that introduces students to the mathematics of radiometric dating. Students derive the decay equation for the rubidium-strontium isotopic system, then apply it to date rock samples from the San Juan Mountains of southwest Colorado and a meteorite assumed to be approximately coeval with the Earth. Click here to view the full activity on the Kéyah Math Project website.

Semken, Steven; Perkins, Tracy

217

Plaza Sarmiento: San Fernando, Argentina  

Directory of Open Access Journals (Sweden)

Full Text Available Los espacios públicos tienen la misión de satisfacer diferentes roles, tales como dar lugar al esparcimiento, al juego infantil e imprimir carácter cívico a un lugar. Sin embargo también abren la posibilidad de ser sutura en sitios no completamente despejados. Esto es aprovechado, generando espacios semipúblicos y públicos en relación a los medianeros existentes.Public spaces have the mission of satisfying various roles, such as giving place for recreation, children's play and give civic character. However, they also open the possibility of becoming a suture in sites that are not completely clear. This can be opportunistic, generating semi-public and public spaces in relation to the existing walls.

Ignacio Montaldo

2010-04-01

218

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

219

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

220

Tilt Precursors before Earthquakes on the San Andreas Fault, California.  

Science.gov (United States)

An array of 14 biaxial shallow-borehole tiltmeters (at 1O(-7) radian sensitivity) has been installed along 85 kilometers of the San Andreas fault during the past year. Earthquake-related changes in tilt have been simultaneously observed on up to four independent instruments. At earthquake distances greater than 10 earthquake source dimensions, there are few clear indications of tilt change. For the four instruments with the longest records (> 10 months), 26 earthquakes have occurred since July 1973 with at least one instrument closer than 10 source dimensions and 8 earthquakes with more than one instrument within that distance. Precursors in tilt direction have been observed before more than 10 earthquakes or groups of earthquakes, and no similar effect has yet been seen without the occurrence of an earthquake. PMID:17843056

Johnston, M J; Mortensen, C E

1974-12-13

 
 
 
 
221

SANS experiments and molecular dynamics studies of asphaltenes : driving force and morphology of nano-aggregation  

Energy Technology Data Exchange (ETDEWEB)

Small-angle scattering experiments have shown that asphaltenes form nanoaggregates, but their shape, arrangement and the driving force behind their formation are not well understood. This study used SANS experiments to probe the shape of the asphaltene nanoaggregates in toluene solution and crude oil. Molecular Dynamics simulations of model asphaltene structures were used to discover the most probable morphology of asphaltene molecules in nanoaggregates and the nature and strength of the driving force behind aggregation. SANS experiments were conducted on heptane extracted asphaltenes in d8-toluene and on a crude oil. In addition, V-SANS experiments were conducted on the crude oil. Potential of Mean Force (PMF) calculations between pairs of asphaltene molecules were conducted in baths of explicit solvent molecules, both toluene and heptane. The free energy of aggregation was found to be approximately -8 kJ mol-1. There was little difference between the PMF curves in toluene and heptane, indicating that the nano-aggregation process is relatively independent of solvent. This implies that it is larger scale aggregation seen in the V-SANS experiments that occurs in heptane and does not occur in toluene. Larger simulations were also conducted for 6 asphaltene molecules in a box of solvent at 7wt per cent asphaltene. Preliminary results showed that aggregation does occur spontaneously. Further analysis of the simulations is ongoing to determine the most probable morphology of asphaltene aggregates. 2 refs.

Headen, T.F.; Skipper, N.T. [Univ. College London (United Kingdom). Dept. of Physics and Astronomy; Boek, E.S. [Schlumberger Cambridge Research, Cambridge (United Kingdom)

2008-07-01

222

Exploitation d'approches système dans les réseaux sans fil  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Les travaux présentés s'inscrivent dans le cadre des systèmes mobiles et distribués, et s'intéressent tout particulièrement aux perspectives offertes par les réseaux locaux sans fil. A l'opposé de la complexité de déploiement d'une infrastructure cellulaire étendue, les interactions sans fil courte portée peuvent être utilisées de manière très simple, sans infrastructure. Ainsi, elles permettent à des calculateurs proches d'échanger automatiquement des informations. Nous pro...

Weis, Fre?de?ric

2012-01-01

223

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

224

Sans study of asphaltene aggregation  

International Nuclear Information System (INIS)

The colloidal properties of asphaltenes have long been recognized from peculiarities in their solubility and colligative properties. A layered micellar model or asphaltenes was proposed by others in which a highly condensed alkyl aromatic formed the central part, and molecules of decreasingly aromatic character (resins) clustered around them. Numerous studies, based on a variety of techniques such as ultracentrifugation and electron microscopy indicated a particulate nature for asphaltenes with size 20-40 A diameter. Others have proposed a refined model based on x-ray diffraction and small angle scattering. In this model, interactions between flat sheets of condensed aromatic rings form the central ''crystallite'' part of a spherical particle with the outer part being comprised of the aliphatic positions of the same molecules. These particles are bunched together with some degree of entanglement into ''micelles''. Concentration and solvent dependent radii of gyration, ranging from 30-50 A were reported. The aggregation creates a good deal of uncertainty as to the true molecular size or weight of asphaltenes. Neutron scattering offers novel contrast relative to light scattering (refractive index) and x-ray scattering (electron density). This is because the scattering length of proton is negative, whereas that from deuterium and other nuclei such as C, S, O, and N are positive. Thus by replacing hydrogen with deuterium in either the solvent or the scatterer the contrast the solvent or the scatterer the contrast can be varied, and different parts of the molecule can be highlighted

225

Precursory Diffuse CO2 Emission Signature of the January 2002 Short-term Unrest at San Miguel Volcano, El Salvador, Central America  

Science.gov (United States)

San Miguel is one of the most active volcanoes in El Salvador and rises from near sea level to 2,132 meters. San Miguel has erupted at least 29 times since 1699 and its historical eruptions consisted mainly of relatively quiescent emplacement of lava flows or minor explosions that produced modest tephra falls (Mayer-Abich, 1956). In January 2002 a short-term volcanic unrest characterized by a gas-and-steam plume containing a little ash rising with a mushroom-like profile a few hundred meters above the summit crater occurred at San Miguel volcano (BGVN 27:02, 2002). In addition, an anomalous microseismicity pattern, about 75 events between 7:30 and 10:30 hours, was also observed on January 16, 2002. This style of increased seismicity and gas emission is within the range of normal activity at San Miguel according to SNET, since intermittent periods of vigorous steam-and-gas emission have been commonly reported in recent years (BGVN 27:02, 2002). Continuous geochemical monitoring of diffuse CO2 degassing is performed on the eastern flank of San Miguel volcano since November 24, 2001, to provide a multidisciplinary approach for San Miguel's volcanic surveillance program. At the observation site, the background mean of the diffuse CO2 emission rate is about 16 gm-2d-1, but a 17-fold increase, up to 270 gm-2d-1, was detected on January 7, nine days before the January 2002 short-term unrest at San Miguel. This observed anomalous changes on diffuse CO2 degassing rate might be related to a sharp increase of CO2 pressure within the volcanic-hydrothermal system of San Miguel since meteorological fluctuations cannot explain this observed significant increase of diffuse CO2 emission nine days before the short-term unrest at San Miguel volcano on January 16, 2002.

Cartagena, R.; Pérez, N.; Salazar, J.; Olmos, R.; Barahona, F.; Soriano, T.; Padrón, E.; Lima, R.; Melián, G.; Hernández, P.; López, D.

2002-12-01

226

Geophysical evidence for wedging in the San Gorgonio Pass structural knot, southern San Andreas fault zone, southern California  

Science.gov (United States)

Geophysical data and surface geology define intertonguing thrust wedges that form the upper crust in the San Gorgonio Pass region. This picture serves as the basis for inferring past fault movements within the San Andreas system, which are fundamental to understanding the tectonic evolution of the San Gorgonio Pass region. Interpretation of gravity data indicates that sedimentary rocks have been thrust at least 5 km in the central part of San Gorgonio Pass beneath basement rocks of the southeast San Bernardino Mountains. Subtle, long-wavelength magnetic anomalies indicate that a magnetic body extends in the subsurface north of San Gorgonio Pass and south under Peninsular Ranges basement, and has a southern edge that is roughly parallel to, but 5-6 km south of, the surface trace of the Banning fault. This deep magnetic body is composed either of upper-plate rocks of San Gabriel Mountains basement or rocks of San Bernardino Mountains basement or both. We suggest that transpression across the San Gorgonio Pass region drove a wedge of Peninsular Ranges basement and its overlying sedimentary cover northward into the San Bernardino Mountains during the Neogene, offsetting the Banning fault at shallow depth. Average rates of convergence implied by this offset are broadly consistent with estimates of convergence from other geologic and geodetic data. Seismicity suggests a deeper detachment surface beneath the deep magnetic body. This interpretation suggests that the fault mapped at the surface evolved not only in map but also in cross-sectional view. Given the multilayered nature of deformation, it is unlikely that the San Andreas fault will rupture cleanly through the complex structures in San Gorgonio Pass. ?? 2005 Geological Society of America.

Langenheim, V.E.; Jachens, R.C.; Matti, J.C.; Hauksson, E.; Morton, D.M.; Christensen, A.

2005-01-01

227

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.

228

Slip Rates and Rheology of the Southern San Andreas-San Jacinto Fault System From Earthquake Cycle Models Constrained by GPS and InSAR Observations  

Science.gov (United States)

Estimates of fault slip rates across deforming plate margins from geodetic data are nonunique and depend upon assumptions in model parameters that may be poorly constrained and that trade-off with other parameters. Surface velocity profiles across active fault systems are a product of far-field loading, long-term slip rates and locking depths of the individual faults, the rheology of the crust and upper mantle, time since the last major earthquake on each fault, and the system's seismic history. The southern San Andreas fault system (San Andreas, San Jacinto, and Elsinore faults, principally) has been the subject of a number of recent studies that seek to understand the effects of lateral variations in elastic and/or vertical variations in viscoelastic mechanical structure on estimates of fault slip rates as deduced from surface velocity measurements. There are known trade-offs in fault slip, mechanical structure, earthquake repeat interval, and the current relative time into the present earthquake cycle that make estimation of these parameters somewhat difficult, with differences between significantly different models resulting in rather small differences in the surface velocity profile. We apply two dimensional (2D) viscoelastic finite element models (FEM) of faults undergoing periodic earthquakes to explore the effects of rheology, inter-event time, and time into the earthquake cycle on estimates of long-term slip rates across the southern San Andreas fault system in southern California. Specifically we will explore a range of models incorporating lateral rheology (both elastic and time dependent) variations across this fault system that best fit the interferometric synthetic aperture radar (InSAR) mean line-of- sight (LOS) velocity field, and geodetic velocities from the SCEC CMM3 solution projected into the SAR LOS. The InSAR LOS velocities were calculated from a least-squares inversion of 61 interferograms from 33 SAR data images spanning the interval between the Landers (1992) and Hector Mine (1999) earthquakes. 2D viscoelastic FEM Green's functions are calculated using the GeoFEST v. 4.5 software. Green's functions are calculated for a fully "spun- up" edge driven earthquake cycle with an assumed fault locking depth and mechanical structure across the fault system. We use a Bayesian inversion method to solve for both fault slip on the San Jacinto and San Andreas faults and the most appropriate rheology across the fault system.

Lundgren, P. R.; Hetland, E. A.; Liu, Z.; Fielding, E. J.

2007-12-01

229

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

Science.gov (United States)

...Directory LLC, San Francisco Division, Publishing Operations Group, YP Subsidiary Holdings...Directory LLC, San Francisco Division, Publishing Operations Group, YP Subsidiary Holdings...Directory LLC, San Francisco Division, Publishing Operations Group, YP Subsidiary...

2013-09-04

230

33 CFR 165.758 - Security Zone; San Juan, Puerto Rico.  

Science.gov (United States)

...false Security Zone; San Juan, Puerto Rico. 165.758 Section 165.758...758 Security Zone; San Juan, Puerto Rico. (a) Location. Moving...anchored in the Port of San Juan, Puerto Rico. The security zone for a cruise...

2010-07-01

231

75 FR 57496 - Notice of Public Meeting, Santa Rosa and San Jacinto Mountains National Monument Advisory...  

Science.gov (United States)

...Rosa and San Jacinto Mountains National Monument Advisory Committee; California AGENCIES...Rosa and San Jacinto Mountains National Monument Act of 2000 and the Federal Advisory...Rosa and San Jacinto Mountains National Monument Advisory Committee (MAC) will...

2010-09-21

232

76 FR 53695 - Notice of Public Meeting, Santa Rosa and San Jacinto Mountains National Monument Advisory...  

Science.gov (United States)

...Rosa and San Jacinto Mountains National Monument Advisory Committee; CA AGENCY: Bureau...Rosa and San Jacinto Mountains National Monument Act of 2000 and the Federal Advisory...Rosa and San Jacinto Mountains National Monument Advisory Committee (MAC) will...

2011-08-29

233

77 FR 43350 - Draft Environmental Assessment and Proposed Habitat Conservation Plan for the San Diego Unified...  

Science.gov (United States)

...federally listed animal, the San Diego fairy shrimp (Branchinecta sandiegonensis...covered by the plan, the San Diego fairy shrimp, and the habitat upon which it...federally endangered San Diego fairy shrimp (Branchinecta...

2012-07-24

234

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

235

75 FR 35504 - San Rafael Cattle Company; Habitat Conservation Plan; Santa Cruz County, AZ  

Science.gov (United States)

...20124-1112-0000-F2] San Rafael Cattle Company; Habitat Conservation Plan...SUMMARY: San Rafael Cattle Company (Applicant) has applied to the...under the authority of the San Rafael Cattle Company. We invite public comment...

2010-06-22

236

78 FR 61958 - San Juan County Historical Society; Notice of Preliminary Determination of A Qualifying Conduit...  

Science.gov (United States)

...Commission [Docket No. CD13-4-000] San Juan County Historical Society; Notice...Intervene On September 20, 2013, San Juan County Historical Society filed a...Mill treatment plant, located in San Juan County, Colorado. Applicant...

2013-10-08

237

San Juan River Basin Recovery Implementation Program. Annual Budget and Work Plan, Fiscal Year 1999.  

Science.gov (United States)

Contents: Adult/Juvenile Fish Community Monitoring; San Juan River Larval Fish Passive Drift-netting; San Juan River Larval Razorback Sucker Survey; San Juan River Specimen Curation And Larval Fish Identification; YOY/Small Bodied Fish Monitoring; Fish Di...

1999-01-01

238

77 FR 66548 - Revisions to the California State Implementation Plan, San Joaquin Valley Unified Air Pollution...  

Science.gov (United States)

...San Joaquin Valley Unified Air Pollution Control District AGENCY: Environmental...San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD) portion...San Joaquin Valley Unified Air Pollution Control District's Rule 4352,...

2012-11-06

239

75 FR 3996 - Revisions to the California State Implementation Plan, San Joaquin Valley Air Pollution Control...  

Science.gov (United States)

...Plan, San Joaquin Valley Air Pollution Control District AGENCY: Environmental...to the San Joaquin Valley Air Pollution Control District (SJVAPCD or District...Planning, San Joaquin Valley Air Pollution Control District; letter dated...

2010-01-26

240

76 FR 41745 - Revisions to the California State Implementation Plan, San Joaquin Valley Unified Air Pollution...  

Science.gov (United States)

...San Joaquin Valley Unified Air Pollution Control District AGENCY: Environmental...San Joaquin Valley Unified Air Pollution Control District portion of the California...San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD)...

2011-07-15

 
 
 
 
241

76 FR 68103 - Revisions to the California State Implementation Plan, San Joaquin Valley Unified Air Pollution...  

Science.gov (United States)

...San Joaquin Valley Unified Air Pollution Control District AGENCY: Environmental...San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD) portion...San Joaquin Valley Unified Air Pollution Control District Rule 4692,...

2011-11-03

242

76 FR 76112 - Approval and Promulgation of Implementation Plans, State of California, San Joaquin Valley...  

Science.gov (United States)

...San Joaquin Valley Unified Air Pollution Control District, New Source Review...to the San Joaquin Valley Air Pollution Control District portion of the California...San Joaquin Valley Unified Air Pollution Control District...

2011-12-06

243

33 CFR 162.205 - Suisun Bay, San Joaquin River, Sacramento River, and connecting waters, CA.  

Science.gov (United States)

...San Joaquin River, Sacramento River, and connecting waters, CA. 162.205 Section 162.205 Navigation and Navigable Waters...San Joaquin River, Sacramento River, and connecting waters, CA. (a) San Joaquin River Deep Water Channel between...

2010-07-01

244

78 FR 6833 - Final Environmental Impact Statement/Environmental Impact Report for the San Joaquin River...  

Science.gov (United States)

...districts taking water deliveries in the east San Francisco Bay Area. The Exchange Contractors...transfers are located in the counties of Stanislaus, San Joaquin, Merced, Madera, Fresno, San Benito, Santa Clara, Tulare, Kern, Kings,...

2013-01-31

245

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

246

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

247

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

248

75 FR 8735 - Endangered and Threatened Wildlife and Plants; Permit, San Luis Obispo County, CA  

Science.gov (United States)

...Wildlife and Plants; Permit, San Luis Obispo County, CA AGENCY: Fish and Wildlife...within Morro Bay State Park, San Luis Obispo County, California. We invite comments...State Park marina peninsula, San Luis Obispo County, California, that will meet...

2010-02-25

249

Huave de San Mateo del Mar, Oaxaca (Huave of San Mateo del Mar, Oaxaca).  

Science.gov (United States)

This document is one of 17 volumes on indigenous Mexican languages and is the result of a project undertaken by the Archivo de Lenguas Indigenas de Mexico. This volume contains information on Huave, an indigenous language of Mexico spoken in San Mateo del Mar, in the state of Oaxaca. The objective of collecting such a representative sampling of…

Mexico Coll. (Mexico City)

250

Chinanteco de San Juan Lealao, Oaxaca (Chinantec of San Juan Lealao, Oaxaca).  

Science.gov (United States)

This document is one of 17 volumes on indigenous Mexican languages and is the result of a project undertaken by the Archivo de Lenguas Indigenas de Mexico. This volume contains information on Chinantec, an indigenous language of Mexico spoken in San Juan Lealao, in the state of Oaxaca. The objective of collecting such a representative sampling of…

Mexico Coll. (Mexico City)

251

Trique de San Juan Copala, Oaxaca (Trique of San Juan Copala, Oaxaca).  

Science.gov (United States)

This document is one of 17 volumes on indigenous Mexican languages and is the result of a project undertaken by the Archivo de Lenguas Indigenas de Mexico. This volume contains information on Trique, an indigenous language of Mexico spoken in San Juan Copala, in the state of Oaxaca. The objective of collecting such a representative sampling of the…

Mexico Coll. (Mexico City)

252

Agriculture, irrigation, and drainage on the west side of the San Joaquin Valley, California: Unified perspective on hydrogeology, geochemistry and management  

Energy Technology Data Exchange (ETDEWEB)

The purpose of this report is to provide a broad understanding of water-related issues of agriculture and drainage on the west side of the San Joaquin Valley. To this end, an attempt is made to review available literature on land and water resources of the San Joaquin Valley and to generate a process-oriented framework within which the various physical-, chemical-, biological- and economic components of the system and their interactions are placed in mutual perspective.

Narasimhan, T.N.; Quinn, N.W.T.

1996-03-01

253

33 CFR 3.35-25 - Sector San Juan Marine Inspection Zone and Captain of the Port Zone.  

Science.gov (United States)

... 2010-07-01 false Sector San Juan Marine Inspection Zone and Captain...District § 3.35-25 Sector San Juan Marine Inspection Zone and Captain of the Port Zone. Sector San Juan's office is located in San...

2010-07-01

254

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)

255

SANS Study of Protein Adsorption on Nanoparticles  

Science.gov (United States)

Adsorption of lysozyme protein on silica nanoparticle has been studied using small-angle neutron scattering (SANS) at pH 7. The measurements were carried out on fixed concentration (1 wt %) of nanoparticles and varying concentration of protein in the range 0 to 2 wt%. It has been found that the protein is adsorbed on the nanoparticle surface at very low protein concentrations whereas strong electrostatic interaction of lysozyme with silica nanoparticles at higher protein concentrations leads to the aggregation of nanoparticles. The adsorption is found to be increased with increase in the particle size and the aggregation is determined to be fractal structure.

Kumar, Sugam; Aswal, V. K.; Kohlbrecher, J.

2011-07-01

256

San Carlos, Island of Chiloé  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Drawing [vertical orientation]; similar to watercolour engraved by Bull S as `San Carlos de Chiloé reproduced facing Narrative 1: 275. The street curves slightly from the right of the foreground to the left centre of the background, with a possible drainage channel edging the pavement area on the left-hand side. It slopes down to a moored boat, behind which lies a second (possibly fishing) boat with an indication of two human figures aboard, and a mast, partly obscured by a building on the...

2007-01-01

257

La política en San Francisco Oxtotilpan  

Directory of Open Access Journals (Sweden)

Full Text Available 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 religiosos 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.

Leif Korsbaek

2011-01-01

258

USGS: Potential San Francisco Bay Landslides during El Niño  

Science.gov (United States)

As a result of the 1997-98 El Niño season, the US Geological Survey (USGS) worked with the National Weather Service and the State Office of Emergency Services to create the San Francisco Bay Region Landslide Folio. This Web site includes samples of the Landslide and Debris-Flow maps that can be found in the Landslide Folio as well as links to the six separate-but-related reports. For background information, the site includes maps and statistics related to the debris flow and mudslides that resulted from an intense storm in 1982. Finally, the Web site contains suggested readings for the general public and also readings specific to the counties that make up the Greater San Francisco Bay Region.

259

Review and analysis of mammographies of Servicio de Radiologia Hospital San Juan de Dios  

International Nuclear Information System (INIS)

The concept of mammography is defined. The mammography has been estimated as the best tool currently available for the detection of breast cancer in its early stages, in addition, have been detected clinically occult lesions. Mammographies of the Servicio de Radiologia Hospital San Juan de Dios were analyzed for a total of 1250. The findings were related as static between BIRADS categorization and inherited-family factors, geographical and personal pathological of patients treated in the period September 2012 to January 2013

260

TOURISM AND SUSTAINABILITY; THE COMPLEXITY OF DECISION MAKING IN SAN MIGUEL ALMAYA  

Digital Repository Infrastructure Vision for European Research (DRIVER)

In this document we analyze the decision making process on tourism in San Miguel Almaya, Mexico, an Otomi locality which preserves uses and customs based on the regime of communal land tenancy, yet slowly this community has experienced transformation basically as a result from its transition from agricultural to commercial community in recent decades. The analysis was based on the approach of Policy Networks that studies the relations generated among actors gathered around public problems; in...

Graciela Cruz-Jiménez; Rocío del Carmen Serrano-Barquín; Carolina Mejía-Madero; Luis Eduardo Mejía-Pedrero; Juan Magdaleno Reza-Meza

2010-01-01

 
 
 
 
261

Melting of San Carlos olivine in the presence of carbon at 6-12 GPa  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Experiments at 6-12 GPa showed that San Carlos olivine surrounded by carbon melts incongruently at 1400 C and higher temperatures, producing olivine with lower Fe contents, pyroxene, carbide, and carbonate melt. The relatively low melting temperature of 1400 C, independent of pressure, is consistent with carbonate melting. The new evidence for the reduced stability of olivine at high temperatures in the presence of carbonate melts is consistent with geophysical observations,...

Garai, Jozsef; Gasparik, Tibor

2003-01-01

262

Biological effects of anthropogenic contaminants in the San Francisco Estuary  

Science.gov (United States)

Concentrations of many anthropogenic contaminants in the San Francisco Estuary exist at levels that have been associated with biological effects elsewhere, so there is a potential for them to cause biological effects in the Estuary. The purpose of this paper is to summarize information about biological effects on the Estuary's plankton, benthos, fish, birds, and mammals, gathered since the early 1990s, focusing on key accomplishments. These studies have been conducted at all levels of biological organization (sub-cellular through communities), but have included only a small fraction of the organisms and contaminants of concern in the region. The studies summarized provide a body of evidence that some contaminants are causing biological impacts in some biological resources in the Estuary. However, no general patterns of effects were apparent in space and time, and no single contaminant was consistently related to effects among the biota considered. These conclusions reflect the difficulty in demonstrating biological effects due specifically to contamination because there is a wide range of sensitivity to contaminants among the Estuary's many organisms. Additionally, the spatial and temporal distribution of contamination in the Estuary is highly variable, and levels of contamination covary with other environmental factors, such as freshwater inflow or sediment-type. Federal and State regulatory agencies desire to develop biological criteria to protect the Estuary's biological resources. Future studies of biological effects in San Francisco Estuary should focus on the development of meaningful indicators of biological effects, and on key organism and contaminants of concern in long-term, multifaceted studies that include laboratory and field experiments to determine cause and effect to adequately inform management and regulatory decisions. ?? 2006 Elsevier Inc. All rights reserved.

Thompson, B.; Adelsbach, T.; Brown, C.; Hunt, J.; Kuwabara, J.; Neale, J.; Ohlendorf, H.; Schwarzbach, S.; Spies, R.; Taberski, K.

2007-01-01

263

77 FR 25384 - Revisions to the California State Implementation Plan, San Joaquin Valley Unified Air Pollution...  

Science.gov (United States)

...San Joaquin Valley Unified Air Pollution Control District AGENCY: Environmental...San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD) portion...Environmental protection, Air pollution control, Intergovernmental...

2012-04-30

264

77 FR 35329 - Revisions to the California State Implementation Plan, San Joaquin Valley Unified Air Pollution...  

Science.gov (United States)

...San Joaquin Valley Unified Air Pollution Control District AGENCY: Environmental...San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD) portion...Environmental protection, Air pollution control, Intergovernmental...

2012-06-13

265

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.

266

Photograph of San Francisco in ruins from Lawrence Captive Airship  

Science.gov (United States)

George R. Lawrence's famous image of post-earthquake San Francisco from 2000 feet above the bay. Captured using an ingenious system of kites, this fish-eye photograph captures the entire city San Francisco after the quake. The photo is available in several sizes and formats ranging from small JPEG files to a 157 MB TIFF version of the iconic image.

Lawrence, George R.; Congress, The L.

267

Las áreas protegidas de la provincia de San Juan  

Directory of Open Access Journals (Sweden)

Full Text Available San Juan posee siete áreas protegidas que representan el 22% de la superficie provincial. San Guillermo es reserva MAB y Lagunas de Guanacache sitio RAMSAR. Se hacen comentarios generales sobre flora, fauna y aspectos de manejo de cada una.

Justo M\\u00E1rquez

1999-01-01

268

La Formación histórica de la comunidad de San Andrés  

Directory of Open Access Journals (Sweden)

Full Text Available Se aborda lo antitético de los inicios fundacionales del territorio holguinero y la formación de los hatos con énfasis en el de San Andrés. Se realiza una valoración sobre el desarrollo del poblamiento de la comunidad de San Andrés, que contempla las etnias a las que pertenecían los emigrantes con datos estadísticos.

Carlos C\\u00F3rdova Mart\\u00EDnez

2006-01-01

269

San Luis Rey River Basin: Overview of Cultural Resources.  

Science.gov (United States)

The drainage system of the San Luis Rey River is a region of major cultural and historic significance. Over 300 archeological sites and a number of recognized historic locations have been identified in the drainage. Any proposed project in the San Luis Re...

S. A. Cupples, K. Hedges

1977-01-01

270

33 CFR 80.1130 - San Luis Obispo Bay, CA.  

Science.gov (United States)

...2010-07-01 2010-07-01 false San Luis Obispo Bay, CA. 80.1130 Section 80.1130 Navigation and Navigable Waters...DEMARCATION LINES Pacific Coast § 80.1130 San Luis Obispo Bay, CA. A line drawn from the southernmost extremity of Fossil...

2010-07-01

271

33 CFR 80.1104 - San Diego Harbor, CA.  

Science.gov (United States)

... 2010-07-01 2010-07-01 false San Diego Harbor, CA. 80.1104 Section 80.1104 Navigation and Navigable Waters...DEMARCATION LINES Pacific Coast § 80.1104 San Diego Harbor, CA. A line drawn from Zuniga Jetty Light “V” to Zuniga Jetty...

2010-07-01

272

33 CFR 80.1142 - San Francisco Harbor, CA.  

Science.gov (United States)

...2010-07-01 2010-07-01 false San Francisco Harbor, CA. 80.1142 Section 80.1142 Navigation and Navigable Waters...DEMARCATION LINES Pacific Coast § 80.1142 San Francisco Harbor, CA. A straight line drawn from Point Bonita Light through...

2010-07-01

273

33 CFR 80.1130 - San Luis Obispo Bay, CA.  

Science.gov (United States)

...Waters 1 2010-07-01 2010-07-01 false San Luis Obispo Bay, CA. 80.1130 Section 80.1130 Navigation and...COLREGS DEMARCATION LINES Pacific Coast § 80.1130 San Luis Obispo Bay, CA. A line drawn from the southernmost...

2010-07-01

274

Puente Coronado - San Diego (EE. UU.  

Directory of Open Access Journals (Sweden)

Full Text Available This 3,5 km long bridge, joining the cities of San Diego and Coronado is one of the longest in the world of this type, and one of the three most important straight line bridges in the United States. Its supporting structure consists of reinforced concrete columns resting on footings or piles, according to whether they are under the sea water or on dry land. The superstructure is partly of metal plates and partly of box girders. The surfacing of the deck consists of asphalt epoxy concrete, of 5 cm depth. Special paint was applied to the bridge, including layers of vinyl, iron oxide and blue vinyl on a zinc base.Este puente, de unos 3 km y medio, que une las ciudades de San Diego y Coronado es uno de los de mayor longitud del mundo, de este tipo, y uno de los tres principales ortótropos de los Estados Unidos de América. Su infraestructura está constituida por pilas de hormigón armado apoyadas sobre pilotes o sobre zapatas, según estén en el mar o en tierra firme. La superestructura está formada, en parte, por chapas metálicas y, en parte, por vigas cajón. El acabado del tablero metálico se realizó a base de hormigón asfáltico de epoxi con un espesor de 5 cm. La pintura es especial y se compone de capas de vinilo, de óxido de hierro y de vinilo azul sobre una capa de cinc.

Editorial, Equipo

1971-12-01

275

Wind resource assessment: San Nicolas Island, California  

Energy Technology Data Exchange (ETDEWEB)

San Nicolas Island (SNI) is the site of the Navy Range Instrumentation Test Site which relies on an isolated diesel-powered grid for its energy needs. The island is located in the Pacific Ocean 85 miles southwest of Los Angeles, California and 65 miles south of the Naval Air Weapons Station (NAWS), Point Mugu, California. SNI is situated on the continental shelf at latitude N33{degree}14` and longitude W119{degree}27`. It is approximately 9 miles long and 3.6 miles wide and encompasses an area of 13,370 acres of land owned by the Navy in fee title. Winds on San Nicolas are prevailingly northwest and are strong most of the year. The average wind speed is 7.2 m/s (14 knots) and seasonal variation is small. The windiest months, March through July, have wind speeds averaging 8.2 m/s (16 knots). The least windy months, August through February, have wind speeds averaging 6.2 m/s (12 knots).

McKenna, E. [National Renewable Energy Lab., Golden, CO (United States); Olsen, T.L. [Timothy L. Olsen Consulting, (United States)

1996-01-01

276

Synthetic seismicity for the San Andreas fault  

Directory of Open Access Journals (Sweden)

Full Text Available 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 are provided by geological and seismological observations of segment lengths, characteristic magnitudes and long-term slip rates. Segment parameters slightly modified from the Working Group on California Earthquake Probabilities allow us to reproduce observed seismicity over four orders of magnitude. The model yields quite irregular earthquake recurrence patterns. Only the largest events (M ? 7.5 are quasi-periodic; small events cluster. Both the average recurrence time and the aperiodicity are also a function of position along the fault. The model results are consistent with paleoseismic data for the San Andreas fault as well as a global set of historical and paleoseismic recurrence data. Thus irregular earthquake recurrence resulting from segment interaction is consistent with a large range of observations.

S. N. Ward

1994-06-01

277

Environmental setting of San Francisco Bay  

Science.gov (United States)

San Francisco Bay, the largest bay on the California coast, is a broad, shallow, turbid estuary comprising two geographically and hydrologically distinct subestuaries: the northern reach lying between the connection to the Pacific Ocean at the Golden Gate and the confluence of the Sacramento-San Joaquin River system, and the southern reach (herein called South Bay) between the Golden Gate and the southern terminus of the bay. The northern reach is a partially mixed estuary dominated by seasonally varying river inflow, and the South Bay is a tidally oscillating lagoon-type estuary. Freshwater inflows, highest during winter, generate strong estuarine circulation and largely determine water residence times. They also bring large volumes of dissolved and particulate materials to the estuary. Tidal currents, generated by mixed semidiurnal and diurnal tides, mix the water column and, together with river inflow and basin geometry, determine circulation patterns. Winds, which are strongest during summer and during winter storms, exert stress on the bay's water surface, thereby creating large waves that resuspend sediment from the shallow bay bottom and, together with the tidal currents, contribute markedly to the transport of water masses throughout the shallow estuary. ?? 1985 Dr W. Junk Publishers.

Conomos, T.J.; Smith, R.E.; Gartner, J.W.

1985-01-01

278

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

279

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

International Nuclear Information System (INIS)

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

280

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

Science.gov (United States)

...Authority of San Antonio (the Port), in San Antonio, Tex. This...the rail lines owned by the Port in the East Kelly Railport...agreement between SAC and the Port will not contain any interchange...By the Board. Rachel D. Campbell, Director, Office of...

2012-06-15

 
 
 
 
281

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish 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. Abstract in english 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 subgreywake [...] s 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; P., Parrini; N., Brogioni.

2007-09-01

282

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

283

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish 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. Abstract in english 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 subgreywake [...] s 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; P., Parrini; N., Brogioni.

284

Understanding sociocultural and psychological factors affecting transgender people of color in San Francisco.  

Science.gov (United States)

This ethnographic qualitative study explored the needs of transgender people of color, including biological transitioning issues, gender and group membership identity formation, HIV, and other health issues. The sample consisted of transgender youth and adults of color in San Francisco (N = 43). Data were collected from in-depth interviews with 20 youth and adults and focus groups with 23 individuals. The study focused on perspectives of racial and ethnic minorities from Asian/Pacific Islander, African American, and Latino backgrounds. The medical decision-making perspective was used to gain a deeper understanding of sociocultural and psychological factors affecting transgender individuals of color in San Francisco. The major themes that emerged were gender identity, group membership, transitioning and related issues, sex work, alcohol and drug use, mental health and health care, sense of community, HIV, resources, and other support. Key clinical considerations that health providers can use to improve care of transgender individuals of color are included. PMID:20416495

Bith-Melander, Pollie; Sheoran, Bhupendra; Sheth, Lina; Bermudez, Carlos; Drone, Jennifer; Wood, Woo; Schroeder, Kurt

2010-01-01

285

Chemistry and microbiology of a sewage spill in South San Francisco Bay.  

Science.gov (United States)

During September 1979, the breakdown of a waste treatment plant resulted in discharge of 1.5 X 107 m3 of primary- treated sewage into a tributary of South San Francisco Bay. Chemical and microbial changes occurred within the tributary as decomposition and nitrification depleted dissolved oxygen. Associated with anoxia were relatively high concentrations of particulate organic carbon, dissolved CO2, CH4, C2H4, NH4+, and fecal bacteria, and low phytoplankton biomass and photosynthetic oxygen production. South San Francisco Bay experienced only small changes in water quality, presumably because of its large volume and the assimilation of wastes that occurred within the tributary. Water quality improved rapidly in the tributary once normal tertiary treatment resumed. -Authors

Cloern, J.E.; Oremland, R.S.

1983-01-01

286

Ground-water-level monitoring network, Hollister and San Juan Valleys, San Benito County, California  

Science.gov (United States)

The addition of 17 wells to the existing 86-well network is proposed to improve the ground-water monitoring in the Hollister and San Juan Valleys in California. The new wells were selected on the basis of well-construction data, availability, location, accessibility, use, and condition, either to replace wells that are no longer accessible or to furnish needed additional data for planning artificial recharge, preparing water-level-contour maps, and digital ground-water modeling. (USGS)

Farrar, C. D.

1981-01-01

287

ASPECTOS PETROGRAFICOS Y GEOQUIMICOS DE LAS ROCAS METAMORFICAS DEL SECTOR BARRANCO DE LOBA (SERRANIA DE SAN LUCAS) / PETROGRAPHIC AND GEOCHEMISTRY ASPECTS OF METAMORPHIC ROCKS IN BARRANCO DE LOBA AREA (SERRANIA DE SAN LUCAS)  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish Abstract in spanish Las rocas metamórficas aflorantes en la Plancha 64 (estribación NE de la Serranía de San Lucas, Cordillera Central), están agrupadas en dos unidades estratigráficas: una denominada formación Neis de San Lucas y otra unidad de carácter informal, denominada Unidad Metamórfica de Pinillos. Esta ultima, [...] compuesta por los Esquistos de Armenia y las Filitas de Tapoa. El Neis de San Lucas, consiste en neises cuarzo-feldespáticos (neises cuarzo-feldespáticos con biotita, neises cuarzo-feldespáticos con hornblenda) y rocas metamáficas (neis hornblendico, granulitas, metagabros). Los Esquistos de Armenia, se componen de esquistos pelíticos, tales como esquistos micáceos y esquistos micáceos con andalusita, y esquistos calco-silicatados, los cuales son cuarzosos con cantidades variables de minerales del grupo de la epidota, hornblenda y actinolita. Las Filitas de Tapoa son rocas compuestas de cuarzo y sericita con minerales opacos alterados. El metamorfismo del Neis de San Lucas es regional, alcanzando las facies anfibolita alta y granulita piroxénica. Edades U-Pb en circones de esta formación, apunta a un evento tectonotermal del Mesoproterozoico (1124Ma±22 Ma), relacionado con la orogenia Grenviliana, durante la consolidación del supercontinente Rodinia. Las rocas de la Unidad Metamórfica de Pinillos, es considerada por sus relaciones de campo, como de edad Paleozoica Temprano. Abstract in english The metamorphic rocks that outcrop in the San Lucas foothills (in the area covered by the map indentifed 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 compos [...] ed 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 metamafc rocks (hornblende gneiss, granulites and metagabbros). The Armenia Schists is composed by pelite schists; such as micaceous schists; micáceous 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 anfbolite 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 supercontinent consolidation. The Pinillos Metamorphic Rocks Unit, is Early Paleozoic in age, according to the feld relations.

Carlos Alberto, García R.; Correa, Karen; Luis C., Mantilla F.; Luis, Bernal..

2009-06-01

288

ASPECTOS PETROGRAFICOS Y GEOQUIMICOS DE LAS ROCAS METAMORFICAS DEL SECTOR BARRANCO DE LOBA (SERRANIA DE SAN LUCAS) / PETROGRAPHIC AND GEOCHEMISTRY ASPECTS OF METAMORPHIC ROCKS IN BARRANCO DE LOBA AREA (SERRANIA DE SAN LUCAS)  

Scientific Electronic Library Online (English)

Full Text Available SciELO Colombia | Language: Spanish Abstract in spanish Las rocas metamórficas aflorantes en la Plancha 64 (estribación NE de la Serranía de San Lucas, Cordillera Central), están agrupadas en dos unidades estratigráficas: una denominada formación Neis de San Lucas y otra unidad de carácter informal, denominada Unidad Metamórfica de Pinillos. Esta ultima, [...] compuesta por los Esquistos de Armenia y las Filitas de Tapoa. El Neis de San Lucas, consiste en neises cuarzo-feldespáticos (neises cuarzo-feldespáticos con biotita, neises cuarzo-feldespáticos con hornblenda) y rocas metamáficas (neis hornblendico, granulitas, metagabros). Los Esquistos de Armenia, se componen de esquistos pelíticos, tales como esquistos micáceos y esquistos micáceos con andalusita, y esquistos calco-silicatados, los cuales son cuarzosos con cantidades variables de minerales del grupo de la epidota, hornblenda y actinolita. Las Filitas de Tapoa son rocas compuestas de cuarzo y sericita con minerales opacos alterados. El metamorfismo del Neis de San Lucas es regional, alcanzando las facies anfibolita alta y granulita piroxénica. Edades U-Pb en circones de esta formación, apunta a un evento tectonotermal del Mesoproterozoico (1124Ma±22 Ma), relacionado con la orogenia Grenviliana, durante la consolidación del supercontinente Rodinia. Las rocas de la Unidad Metamórfica de Pinillos, es considerada por sus relaciones de campo, como de edad Paleozoica Temprano. Abstract in english The metamorphic rocks that outcrop in the San Lucas foothills (in the area covered by the map indentifed 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 compos [...] ed 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 metamafc rocks (hornblende gneiss, granulites and metagabbros). The Armenia Schists is composed by pelite schists; such as micaceous schists; micáceous 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 anfbolite 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 supercontinent consolidation. The Pinillos Metamorphic Rocks Unit, is Early Paleozoic in age, according to the feld relations.

Carlos Alberto, García R.; Correa, Karen; Luis C., Mantilla F.; Luis, Bernal..

289

La presencia de San Fernando en nuestra medallística / The presence of San Fernando in our medals  

Scientific Electronic Library Online (English)

Full Text Available SciELO Peru | Language: Spanish Abstract in spanish La Facultad de Medicina de San Fernando no solo es la escuela galénica más antigua de nuestro país, sino además es una de las pocas instituciones peruanas que pueden ufanarse de una existencia continua, que se aproxima al bicentenario. Durante una vida institucional tan dilatada, en un país como el [...] Perú, con una rica y secular tradición en la confección de medallas, era de esperarse que algunos de sus principales acontecimientos hayan quedado perennizados por medio de ejemplares conmemorativos. Es gracias a la medallística, es decir, aquella rama de la numismática que estudia todo lo concerniente a las medallas, que podemos darlos a conocer a los peruanos en general, y a la comunidad sanfernandina en particular, a la par de perpetuarlos en estas páginas. Abstract in english San Fernando Medical Faculty is not only the oldest medical school in our country, but also one of the few Peruvian institutions that can boast of a close to two hundred years continuous existence. Throughout an extended institutional life in a country with rich and long medals minting tradition, it [...] is to be expected that some of its main events have been recalled for posterity by commemorative medals. Thanks to that branch of numismatics dealing with the minting and study of medals we can allow Peruvian public and San Fernando alumni in particular to learn on this fascinating subject as well as keeping a written record for the future.

Ricardo, Álvarez.

290

Site prospection at san pedro mártir  

Directory of Open Access Journals (Sweden)

Full Text Available Realizamos mediciones climatológicas y de seeing, en 5 sitios dentro del área reservada para uso astronómico en el Parque Nacional Sierra de San Pedro Mártir (SPM, durante al menos 15 noches en cada uno de ellos. Las variables climáticas se midieron con una estación meteorológica Davis y un anemómetro ultrasónico Metek. El seeing fue medido con un RoboDIMM fabricado por NOAO. Las mediciones climatológicas y de seeing fueron comparadas con las obtenidas simultáneamente con la instrumentación del Thirty Meter Telescope Project en el Observatorio Astronómico Nacional (OAN en SPM. Las diferencias de seeing son pequeñas en la mayor parte de los casos. Recomendamos que se realice una campaña de larga duración en Llano Alto 1, ya que es un sitio de fácil acceso y el seeing parece ser ligeramente mejor.

J. Bohigas

2008-01-01

291

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

292

Paleomagnetism of San Cristobal Island, Galapagos  

Science.gov (United States)

Isla San Cristobal, the most easterly of the Galapagos Islands, consists of two parts: a large volcano constitutes the southwest half of the island and an irregular apron of small cones and flows makes up the northeast half. As some of the younger flows on the flanks of the large volcano are reversely magnetized, the minimum age of the volcano is 0.7 my, which is the age of the Brunhes-Matuyama reversal boundary. The true age is probably several times greater. The cones and flows to the northeast are all normally magnetized. The between-site angular dispersion of virtual poles is 11.3?? - a value consistent with mathematical models for the latitude dependence of geomagnetic secular variation. ?? 1971.

Cox, A.

1971-01-01

293

San Carlos Apache Tribe - Energy Organizational Analysis  

Energy Technology Data Exchange (ETDEWEB)

The San Carlos Apache Tribe (SCAT) was awarded $164,000 in late-2011 by the U.S. Department of Energy (U.S. DOE) Tribal Energy Program's "First Steps Toward Developing Renewable Energy and Energy Efficiency on Tribal Lands" Grant Program. This grant funded: ? The analysis and selection of preferred form(s) of tribal energy organization (this Energy Organization Analysis, hereinafter referred to as "EOA"). ? Start-up staffing and other costs associated with the Phase 1 SCAT energy organization. ? An intern program. ? Staff training. ? Tribal outreach and workshops regarding the new organization and SCAT energy programs and projects, including two annual tribal energy summits (2011 and 2012). This report documents the analysis and selection of preferred form(s) of a tribal energy organization.

Rapp, James; Albert, Steve

2012-04-01

294

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

295

Site Prospection at San Pedro Mártir  

Science.gov (United States)

Seeing and weather observations were conducted at 5 sites within the boundaries of the area reserved for astronomy at the Sierra of San Pedro Mártir National Park (SPM), for at least 15 nights at each one of these. Weather variables were measured using a Davis Weather Station and a Metek Ultrasonic Anemometer. Seeing information was collected with a NOAO RoboDIMM unit. Seeing and weather results were compared to those being delivered at the same time by the instrumentation of the Thirty Meter Telescope Project at the Observatorio Astronómico Nacional (OAN) at SPM. Seeing differences are small in most cases. We recommend a long term campaign at the easily accessible site Llano Alto 1, where we found that seeing may be slightly better.

Bohigas, J.; Nuñez, J. M.; Guillén, P. F.; Lazo, F.; Hiriart, D.; Calvario, T.; Escoboza, O.; Valdez, J.; Córdova, A.; Sohn, E.

2008-04-01

296

DIAGNÓSTICO ESTRUCTURAL DEL EDIFICIO CLUB SAN CARLOS  

Directory of Open Access Journals (Sweden)

Full Text Available Este artículo muestra el diagnóstico estructural del edificio Club San Carlos, exponente significativo de la arquitectura ecléctica santiaguera, con grado de protección I, ubicado en el Centro Histórico Urbano (CHU de Santiago de Cuba. El diagnóstico se logró con la aplicación del método empírico, mediante la observación directa del inmueble y sus características y con el levantamiento fotográfico de las lesiones que afectan los elementos estructurales componentes, las cuales fueron referenciadas a través de las fichas técnicas elaboradas, en las que se detallan las principales lesiones, posibles causas y las tareas emergentes que se deben realizar para lograr su integridad y seguridad estructural. Las conclusiones arrojadas por el análisis del estado técnico del inmueble evidencian la necesidad de evaluar la vulnerabilidad sísmica para una futura rehabilitación estructural del edificio

Magdeline Mac\\u00EDas-Mart\\u00EDnez

2011-01-01

297

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.

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

298

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

299

Site prospection at San Pedro Mártir  

Scientific Electronic Library Online (English)

Full Text Available SciELO Mexico | Language: English Abstract in spanish Realizamos mediciones climatológicas y de seeing, en 5 sitios dentro del área reservada para uso astronómico en el Parque Nacional Sierra de San Pedro Mártir (SPM), durante al menos 15 noches en cada uno de ellos. Las variables climáticas se midieron con una estación meteorológica Davis y un anemóme [...] tro ultrasónico Metek. El seeing fue medido con un RoboDIMM fabricado por NOAO. Las mediciones climatológicas y de seeing fueron comparadas con las obtenidas simultáneamente con la instrumentación del Thirty Meter Telescope Project en el Observatorio Astronómico Nacional (OAN) en SPM. Las diferencias de seeing son pequeñas en la mayor parte de los casos. Recomendamos que se realice una campaña de larga duración en Llano Alto 1, ya que es un sitio de fácil acceso y el seeing parece ser ligeramente mejor. Abstract in english Seeing and weather observations were conducted at 5 sites within the boundaries of the area reserved for astronomy at the Sierra de San Pedro Mártir National Park (SPM), for at least 15 nights at each one of these. Weather variables were measured using a Davis Weather Station and a Metek Ultrasonic [...] Anemometer. Seeing information was collected with a NOAO RoboDIMM unit. Seeing and weather results were compared to those being delivered at the same time by the instrumentation of the Thirty Meter Telescope Project at the Observatorio Astronómico Nacional (OAN) at SPM. Seeing differences are small in most cases. We recommend a long term campaign at the easily accessible site Llano Alto 1, where we found that seeing may be slightly better.

J, Bohigas; J. M., Núñez; P. F., Guillén; F, Lazo; D, Hiriart; T, Calvario; O, Escoboza; A, Córdova; J, Valdez; E, Sohn.

300

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

 
 
 
 
301

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  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish 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 Cerr [...] o 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. Abstract in english 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; Daniel, Codega; David, Aguilera.

302

Danger on mountain roads, Iglesia Department, San Juan, Argentina  

International Nuclear Information System (INIS)

This paper is related to Mining Projects at Valle del Cura - Iglesia Department-San Juan Province-Argentina Republic. Basis for an Integrated Management of a Sustainable Mining.It aims at locating and analyzing natural dangers which may interfere high mountain paths, such as climatic, anthropic and/or tectonic factors since they may stop a region development. A hillside, a mountainside,a talus or a slope may have, due to their extensive areas, either lithological or structural variations which might determine the presence of un stability phenomena.The cordillera n Iglesia sector major dangers are related to mass displacement movements as a result of the great quantity of unstable detritus situated in valleys slopes.Landsat images, aerial photographs, topographic and geological maps data allowed to detect several sectors that may generate mass displacement movements, Arroyo de Aguas Negras rising sector was selected because it is on the right of National Route No. 150 trace. It is not only a national, but also an international route that connects Argentina and Chile.(author)

303

33 CFR 110.74c - Bahia de San Juan, PR.  

Science.gov (United States)

... 2010-07-01 2010-07-01 false Bahia de San Juan, PR. 110.74c Section 110.74c Navigation and Navigable Waters... Special Anchorage Areas § 110.74c Bahia de San Juan, PR. The waters of San Antonio Channel, Bahia de San Juan,...

2010-07-01

304

Investigating Sources and Emissions of Volatile Organic Compounds in California's San Joaquin Valley  

Science.gov (United States)

Emissions of Volatile Organic Compounds (VOCs) are regulated both as primary air pollutants and as precursors to the formation of secondary organic aerosol and tropospheric ozone. The San Joaquin Valley, a non-attainment area for ozone and PM2.5, contains a variety of point, area, and mobile VOC sources that contribute to both primary and secondary pollution. Using ambient measurements of over 100 different VOCs and Intermediate Volatility Organic Compounds (IVOCs) made at multiple field sites, we assess the magnitude and importance of various VOC sources in the San Joaquin Valley. Hourly measurements were made during the spring and summer of 2010 via in-situ gas chromatography in Bakersfield, CA as part of the CalNex experiment and also at a rural site located 100 km north of Bakersfield. Additionally, in-situ measurements of fresh motor vehicle exhaust were made in Oakland's Caldecott tunnel during the summer of 2010. Measurements include a broad array of anthropogenic and biogenic VOCs ranging in size from 1 to 17 carbon atoms, including many compounds with functional groups or substituents (e.g. aldehydes, ketones, alcohols, halogens, sulfur, & nitrogen). Using statistical methods of source apportionment, covariance, source receptor modeling, and air parcel back trajectories, we assess the impact of various sources on observed VOC concentrations at our field sites in the San Joaquin Valley. Prevalent sources include gasoline and diesel-vehicle exhaust, petroleum extraction/refining, biogenic emissions from agricultural crops and natural vegetation, and emissions from dairy operations and animal husbandry. We use measurements of fresh motor vehicle emissions from the Caldecott tunnel to constrain apportionment of gasoline and diesel-related VOCs and IVOCs in the San Joaquin Valley. Initial results from Bakersfield show substantial influence from local anthropogenic VOC sources, but there is evidence for transport of emissions from both anthropogenic and biogenic sources elsewhere in the region. For example, large biogenic sources appear to be regional rather than local since concentrations of isoprene peak in the late afternoon/evening suggesting transport from northern parts of the valley. We observed elevated concentrations of numerous alcohols and carbonyls in the San Joaquin Valley; for example mixing ratios of ethanol and acetone at the Bakersfield supersite had inner quartile ranges of 1.2-9.4 ppbv and 0.58-1.6 ppbv, with daytime averages near 2 and 1 ppbv, respectively. Additionally, we assess the sources and emissions of the IVOCs observed in the San Joaquin Valley, which include polycyclic aromatic hydrocarbons, large biogenic compounds, and high molecular weight alkanes and aromatics.

Gentner, D. R.; Harley, R. A.; Weber, R.; Karlik, J. F.; Goldstein, A. H.

2011-12-01

305

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.

306

A record of estuarine water contamination from the Cd content of foraminiferal tests in San Francisco Bay, California  

Science.gov (United States)

A five-year dissolved Cd time series from San Francisco Bay and adjacent coastal water shows that the composition of surface water towards the mouth of the estuary is determined largely by the effect of coastal upwelling. Cd concentrations inside and outside the estuary (0.2-1.0 nmol/kg) increase as Cd-rich deep water is advected to the surface near the coast during spring and summer. On average, the mean Cd concentrations inside San Francisco Bay (0.54 nmol/kg) during 1991-1995 was significantly higher than outside (0.35 nmol/kg), however. Surface samples collected throughout San Francisco Bay confirm an internal Cd source unrelated to river discharge. The Cd content of the test of a benthic foraminifer (Elphidiella hannai) in a dated sediment core from San Francisco Bay was measured to determine if the water column Cd enrichments in San Francisco Bay could be related to the rapid development of the watershed. The method is based on the observation that the Cd/Ca ratio of carefully cleaned tests of foraminifera is, determined by the dissolved Cd content of overlying water at the time of test formation. Pre-industrial foraminiferal Cd/Ca ratios in the sediment core average 274 ?? 15 nmol/mol (n = 19) nmol/mol. Foraminiferal Cd/Ca ratios increased to 386 ?? 33 nmol/mol (n = 19) over the past several decades indicating a 40% increase in the mean Cd content of surface water in Central San Francisco Bay. We suggest that, in addition to Cd discharges into the estuary, indirect consequences of agricultural development in the Central Valley of California could have contributed to this increase. This new method to reconstruct estuarine contamination is not affected by some of the processes that complicate the interpretation of changes in bulk sediment metal concentrations.

VanGeen, A.; Luoma, S.N.

1999-01-01

307

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.

308

Forecasting Selenium Discharges to the San Francisco Bay-Delta Estuary: Ecological Effects of A Proposed San Luis Drain Extension  

Science.gov (United States)

Selenium discharges to the San Francisco Bay-Delta Estuary (Bay-Delta) could change significantly if federal and state agencies (1) approve an extension of the San Luis Drain to convey agricultural drainage from the western San Joaquin Valley to the North Bay (Suisun Bay, Carquinez Strait, and San Pablo Bay); (2) allow changes in flow patterns of the lower San Joaquin River and Bay-Delta while using an existing portion of the San Luis Drain to convey agricultural drainage to a tributary of the San Joaquin River; or (3) revise selenium criteria for the protection of aquatic life or issue criteria for the protection of wildlife. Understanding the biotransfer of selenium is essential to evaluating effects of selenium on Bay-Delta ecosystems. Confusion about selenium threats to fish and wildlife stem from (1) monitoring programs that do not address specific protocols necessary for an element that bioaccumulates; and (2) failure to consider the full complexity of the processes that result in selenium toxicity. Past studies show that predators are more at risk from selenium contamination than their prey, making it difficult to use traditional methods to predict risk from environmental concentrations alone. This report presents an approach to conceptualize and model the fate and effects of selenium under various load scenarios from the San Joaquin Valley. For each potential load, progressive forecasts show resulting (1) water-column concentration; (2) speciation; (3) transformation to particulate form; (4) particulate concentration; (5) bioaccumulation by invertebrates; (6) trophic transfer to predators; and (7) effects on those predators. Enough is known to establish a first-order understanding of relevant conditions, biological response, and ecological risks should selenium be discharged directly into the North Bay through a conveyance such as a proposed extension of the San Luis Drain. The approach presented here, the Bay-Delta selenium model, determines the mass, fate, and effects of selenium released to the Bay-Delta through use of (1) historical land-use, drainage, alluvial-fill, and runoff databases; (2) existing knowledge concerning biogeochemical reactions and physiological parameters of selenium (e.g., speciation, partitioning between dissolved and particulate forms, and bivalve assimilation efficiency); and (3) site-specific data mainly from 1986 to 1996 for clams and bottom-feeding fish and birds. Selenium load scenarios consider effluents from North Bay oil refineries and discharges of agricultural drainage from the San Joaquin Valley to enable calculation of (a) a composite freshwater endmember selenium concentration at the head of the estuary; and (b) a selenium concentration at a selected seawater location (Carquinez Strait) as a foundation for modeling. Analysis of selenium effects also takes into account the mode of conveyance for agricultural drainage (i.e., the San Luis Drain or San Joaquin River); and flows of the Sacramento River and San Joaquin River on a seasonal or monthly basis. Load scenarios for San Joaquin Valley mirror predictions made since 1955 of a worsening salt (and by inference, selenium) build-up exacerbated by an arid climate and massive irrigation. The reservoir of selenium in the San Joaquin Valley is sufficient to provide loading at an annual rate of approximately 42,500 pounds of selenium to a Bay-Delta disposal point for 63 to 304 years at the lower range of projections presented here, even if influx of selenium from the California Coast Ranges could be curtailed. Disposal of wastewaters on an annual basis outside of the San Joaquin Valley may slow the degradation of valley resources, but drainage alone cannot alleviate the salt and selenium build-up in the San Joaquin Valley, at least within a century. Load scenarios also show the different proportions of selenium loading to the Bay-Delta. Oil refinery loads from 1986 to 1992 ranged from 8.5 to 20 pounds of selenium per day;

Presser, Theresa S.; Luoma, Samuel N.

2006-01-01

309

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

310

San Juan, Puerto Rico Metropolitan Area Air Pollutant Emission Inventory.  

Science.gov (United States)

A summary report is presented of the emission inventory for the San Juan, Puerto Rico Metropolitan Area. The report provides estimates of the present levels of air pollutant emissions and status of their control. The pollutants, which include sulfur oxide...

D. S. Kircher

1971-01-01

311

SAN JUAN BAY ESTUARY PROGRAM IMPLEMENTATION REVIEW ATTACHMENTS  

Science.gov (United States)

A compilation of attachments referenced in the San Juan Bay Estuary Program Implementation Review (2004). Materials include, entity reports, water and sediment quality action plans, progress reports, correspondence with local municipalities and Puerto Rican governmental agencies,...

312

An Integrated Study of the Grayburg/San Andres Reservoir Foster and South Cowden fields,  

Energy Technology Data Exchange (ETDEWEB)

GEOPHYSICAL OBJECTIVES: The goals of work done this quarter were to (1) refine the maps of seismic-derived porosity for the upper Grayburg for reapplication to the production model, (2) determine rock fabric and porosity patterns for the lower Grayburg and the upper San Andres, (3) relate any seismic-derived porosity characteristics, particularly seismic waveform attributes, to the historical production of oil allocated to lower Grayburg and San Andres zones, and (4) to test other geologic attributes for possible inter-relationships. GEOLOGIC OBJECTIVES: Continue the integrated geological/geophysical effort to develop a usable seismic velocity/log porosity transform for each Grayburg producing interval. The lower Grayburg and San Andres core were revisited to glean lithology and porosity information for the seismic inversion model. Update recent production and injection for each well in the study area. Add new production and injection wells to spreadsheet. Continue evaluation of effectiveness of recent completions, plug backs and injector conversions by monitoring oil production and produced water composition. ENGINEERING OBJECTIVES: To build the most accurate reservoir picture by continued integration of all data types available and utilize that model to optimize oil production. Monitoring and testing of new and worked-over wells continues to test the early production models. Methods to improve water quality are being evaluated using normal field management procedures.

NONE

1997-12-31

313

What can we learn from combined SAXS and SANS measurements of the same sample containing surfactants?  

International Nuclear Information System (INIS)

We review the information gained when studying the same sample containing surfactants by SANS and SAXS. Specific information can be obtained if intensities I(q) are determined and used on absolute scale as well as over a large q-window, thus extending to the > asymptotic range. Comparing SAXS and SANS peak positions (when present) allows unambiguous identification of structure factors separated from underlying form factors. Absolute scale refers to scattering cross-section while resolution relates to the qmax/qmin ratio. Taking into account 'external' knowledge of molecular volumes in constrained fitting from explicit models gives better results on aggregation numbers as well as on interfacial thickness than considering only Patterson functions. We assemble in this review results on adsorption isotherms on surfactant films as well as equations of state, quantifying colloidal interactions. Identification of the topological origin of swelling behaviour are made possible by using combined SAXS and SANS on the largest possible q-range. Best results using this general methodology up to now were obtained by considering data separated from background up to qmax= 0.6 A-1 - 0.8 A-1.

314

Fray Francisco de San Juan, a spanish missionary in Bahia in 1624  

Directory of Open Access Journals (Sweden)

Full Text Available The present article discloses the existence of an unpublished manuscript on the netherlandish invasion the Bahia in 1624. The author of the manuscript is a Spanish missionary called Fray Francisco de San Juan, who presents the best relation of the first months of the war, disclosing unknown details of the resistance against the invaders until the death of the Bishop D. Marcos Teixeira.

El presente artículo divulga la existencia de un manuscrito inédito sobre la invasión neerlandesa en la Bahia en 1624. Su autor es el misionario español Fray Francisco de San Juan, que presenta la mejor relación de los primeros meses de la guerra, divulgando los detalles desconocidos de la resistencia contra los invasores hasta la muerte del Obispo D. Marcos Teixeira. [pt] O presente artigo divulga a existência de um manuscrito inédito sobre a invasão neerlandesa na Bahia em 1624. Seu autor é o missionário espanhol Frei Francisco de San Juan, que apresenta a melhor relação dos primeros meses da guerra, divulgando os detalhes desconhecidos da resistência contra os invasores até a morte do bispo D. Marcos Teixeira.

Iglesias Magalhães, Pablo Antonio

2011-06-01

315

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

316

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 / Interpretations about emphyteutic census redemption in Guatemala in late Nineteenth Century: The cases of Antigua Guatemala, San Felipe and San Mateo Milpas Altas  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish 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. Abstract in english 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 pr [...] operty 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.

Aquiles Omar, Ávila Quijas.

2012-12-01

317

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

318

Correlation of data on strain accumulation adjacent to the San Andreas Fault with available models  

Science.gov (United States)

Theoretical and numerical studies of deformation on strike slip faults were performed and the results applied to geodetic observations performed in the vicinity of the San Andreas Fault in California. The initial efforts were devoted to an extensive series of finite element calculations of the deformation associated with cyclic displacements on a strike-slip fault. Measurements of strain accumulation adjacent to the San Andreas Fault indicate that the zone of strain accumulation extends only a few tens of kilometers away from the fault. There is a concern about the tendency to make geodetic observations along the line to the source. This technique has serious problems for strike slip faults since the vector velocity is also along the fault. Use of a series of stations lying perpendicular to the fault whose positions are measured relative to a reference station are suggested to correct the problem. The complexity of faulting adjacent to the San Andreas Fault indicated that the homogeneous elastic and viscoelastic approach to deformation had serious limitations. These limitation led to the proposal of an approach that assumes a fault is composed of a distribution of asperities and barriers on all scales. Thus, an earthquake on a fault is treated as a failure of a fractal tree. Work continued on the development of a fractal based model for deformation in the western United States. In order to better understand the distribution of seismicity on the San Andreas Fault system a fractal analog was developed. The fractal concept also provides a means of testing whether clustering in time or space is a scale-invariant process.

Turcotte, Donald L.

1986-01-01

319

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

320

Neutron detector and SANS development at SAFARI-1  

International Nuclear Information System (INIS)

Position sensitive neutron detectors are an essential part of neutron scattering instruments, hence the development of one-dimensional position sensitive detectors (PSD) for use in small angle neutron scattering (SANS) instruments was carried out as part of an IAEA sponsored collaborative research project. The result was the fabrication and testing of several prototype, 12cm active length, 3He 1-D position sensitive proportional counters with a position resolution and count-rate capability well suited for use in SANS applications. (author)

 
 
 
 
321

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

322

Internal Structure and Weakening Mechanisms of the San Andreas Fault  

Digital Repository Infrastructure Vision for European Research (DRIVER)

New observations of the internal structure of the San Gabriel fault (SGF) are combined with previous characterizations of the Punchbowl fault (PF) to evaluate possible explanations for the low frictional strength and seismic characteristics of the San Andreas fault (SAF). The SGF and PF are ancient, large-displacement faults of the SAF system exhumed to depths of 2 to 5 km. These fault zones are internally zoned; the majority of slip was confined to the cores of principal faults, which typica...

Chester, Frederick M.; Evans, James P.; Biegel, Ronald L.

1993-01-01

323

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

324

Les architectures des réseaux pour des environnements entierement sans fil  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Dans ce document, nous avons étudié les nouvelles possibilités de routage et d'adressage dans les réseaux sans-fil multisauts spontanés de grande taille (WMNs). Les WMNs promettent à l'avenir un changement profond de l'architecture d'Internet, mais beaucoup de problèmes restent à résoudre avant leur déploiement. Le routage, par exemple, est simple dans de petits réseaux statiques, mais les réseaux sans fil sont en pratique dynamiques : des liens peuvent apparaître et disparaître...

Schiller, Eryk

2010-01-01

325

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

326

The Union and Médecins Sans Frontières approach to operational research.  

Science.gov (United States)

Operational research (OR) has become a hot topic at national meetings, international conferences and donor fora. The International Union Against Tuberculosis and Lung Disease (The Union) and Médecins Sans Frontières (MSF) Operational Centre Brussels strongly promote and implement OR with colleagues in low- and middle-income countries. Here we describe how the two organisations define OR, and explain the guiding principles and methodology that underpin the strategy for developing and expanding OR in those countries. We articulate The Union's and MSF's approach to supporting OR, highlighting the main synergies and differences. Then, using the Malawi National Tuberculosis Control Programme as an example, we show how OR can be embedded within tuberculosis control activities, leading to changes in policy and practice at the national level. We discuss the difficult, yet vitally important, issue of capacity building, and share our vision of a new paradigm of product-related training and performance-based OR fellowships as two ways of developing the necessary skills at country level to ensure research is actually performed. Finally, we highlight the need to consider and incorporate into practice the ethical components of OR. This is a key moment to be involved in OR. We are confident that in partnership with interested stakeholders, including the World Health Organization, we can stimulate the implementation of quality, relevant OR as an integral part of health service delivery that in turn will lead to better health for people, particularly for those living in the poorer parts of the world. PMID:21219672

Harries, A D; Rusen, I D; Reid, T; Detjen, A K; Berger, S D; Bissell, K; Hinderaker, S G; Edginton, M; Fussell, M; Fujiwara, P I; Zachariah, R

2011-02-01

327

33 CFR 165.1197 - Security Zones; San Francisco Bay, San Pablo Bay, Carquinez Strait, Suisun Bay, California.  

Science.gov (United States)

...along the shoreline back to the beginning point. (2) Conoco-Phillips, San Pablo Bay. This security zone includes...to the sea floor within approximately 100 yards of the Conoco-Phillips Wharf, Rodeo, CA, and encompasses all...

2010-07-01

328

"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

329

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

330

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

Science.gov (United States)

...2010-07-01 false Security Zones; Golden Gate Bridge and the San Francisco-Oakland... § 165.1187 Security Zones; Golden Gate Bridge and the San Francisco-Oakland...abutments, fenders and pilings of the Golden Gate Bridge and the San...

2010-07-01

331

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

Science.gov (United States)

...2010-07-01 false Security Zones; Golden Gate Bridge and the San Francisco-Oakland...165.1187 Security Zones; Golden Gate Bridge and the San Francisco-Oakland...fenders and pilings of the Golden Gate Bridge and the San Francisco-Oakland...Captain of the Port at telephone number 415-399-3547 or on...

2010-07-01

332

El derecho de autor en San Luis Potosí; una aproximación / Author's Right in San Luis Potosí; an approach  

Scientific Electronic Library Online (English)

Full Text Available SciELO Mexico | Language: Spanish Abstract in spanish Se exponen los primeros antecedentes históricos del derecho de autor en el ámbito internacional con orientación a su desarrollo y posterior tratamiento jurídico en México y en San Luis Potosí. [...] Abstract in english It explains the historical early background of the "Author's Law" or "Author's Right" (Copyright Law) on the internatonal scope oriented toward its development and later legal treatment in Mexico and San Luis Potosí. [...

Agustín, Gutiérrez García; Agustín, Gutiérrez Chiñas.

2011-08-01

333

Crustal deformation along the San Andreas, California  

Science.gov (United States)

The goal is to achieve a better understanding of the regional and local deformation and crustal straining processes in western North America, particularly the effects of the San Andreas and nearby faults on the spatial and temporal crustal deformation behavior. Construction of theoretical models based on the mechanics of coupled elastic plate, viscoelastic foundation and large scale crack mechanics provide a rational basis for the interpretation of seismic and aseismic anomalies and expedite efforts in forecasting the stability of plate boundary deformation. Special focus is placed on the three dimensional time dependent surface deformation due to localized slippage in a elastic layer coupled to a visco-elastic substrate. The numerical analysis is based on a 3-D boundary element technique. Extension to visco-elastic coupling demands the derivation of 3-D time dependent Green's function. This method was applied to analyze the viscoelastic surface displacements due to a dislocated embedded patch. Surface uplift as a function of time and position are obtained. Comparisons between surface uplift for long and short dislocated patches are made.

Li, Victor C.

1992-01-01

334

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.

335

The San Pedro Mártir Transit Observations Program  

Science.gov (United States)

In the framework of the TAOS-II project, aimed at the observation of small-size Kuiper Belt Object occultations, we present the first transit observation program carried on using the facilities of the San Pedro Mártir Observatory (Baja California, Mexico).The involved telescopes consist in a traditional 84cm telescope, a robotic 1.5m, and a traditional 2.12m. The project consist in validating the possibility to use these facilities to observe known Hot Jupiters, in order to set up a follow-up strategy for specific TAOS-II alerts.15 exoplanetary transits were successfully observed in 2014, in several photometric bands (U, V, R, r, and i).We present a panoramic of the project and the results of the fit of first two objects, WASP-39 and WASP-43, which are also the subject of a manuscript in preparation.Moreover, we are exploring 3D ray tracing models to model the system basing on our results, using the software SHAPE.

Ricci, Davide; Rámon Fox, Gerardo; Ayala, Carmen; Navarro, Samuel; Brown Sevilla, Samantha; Fox Machado, Lester; Curiel, Salvador; Michel, Raul; Reyes, Mauricio

2014-11-01

336

Methamphetamine use among San Diego County arrestees.  

Science.gov (United States)

Between 1987 and 2003, an objective measure of recent drug use from a high-risk group was collected as part of a federally-funded program called ADAM (Arrestee Drug Abuse Monitoring). The information collected as part of this project supplemented other self-report data collected across the country with the general population. San Diego County was one of the original ADAM sites, and with local funding support was able to maintain the essential aspects of the program uninterrupted when national support was discontinued. In May 2006, the results of data collected in calendar year 2005 as part of a standard interview with adult and juvenile arrestees, urinalysis, as well as a methamphetamine (meth) addendum were presented at the Substance Abuse Research Consortium (SARC) meeting in Pasadena, California. This article provides a summary of these descriptive data, including a profile of recent meth users, reasons for initiating and continuing use, patterns of use, and trends in use over time. Additionally, information regarding juveniles' perceived risk of meth use and the potential effects meth has on communities is highlighted. Potential policy implications and areas for further research are also discussed. PMID:18284100

Burke, Cynthia

2007-11-01

337

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.

Inés Claudia, Daga; Marcelo Javier, Pierotto.

2011-12-01

338

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

Directory of Open Access Journals (Sweden)

Full Text Available 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.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.

Sabogal Bernal Sandra Jinneth

2011-01-01

339

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

340

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.

 
 
 
 
341

A history of intertidal flat area in south San Francisco Bay, California: 1858 to 2005  

Science.gov (United States)

A key question in salt pond restoration in South San Francisco Bay is whether sediment sinks created by opening ponds will result in the loss of intertidal flats. Analyses of a series of bathymetric surveys of South San Francisco Bay made from 1858 to 2005 reveal changes in intertidal flat area in both space and time that can be used to better understand the pre-restoration system. This analysis also documents baseline conditions of intertidal flats that may be altered by restoration efforts. From 1858 to 2005, intertidal flat area decreased by about 25% from 69.2 +6.4/-7.6 km2 to 51.2 +4.8/-5.8 km2. Intertidal flats in the north tended to decrease in area during the period of this study whereas those south of Dumbarton Bridge were either stable or increased in area. From 1983 to 2005, intertidal flats south of Dumbarton Bridge increased from 17.6 +1.7/-2.5 km2 to 24.2 +1.0/-1.8 km2. Intertidal flats along the east shore of the bay tended to be more erosional and decreased in area while those along the west shore of the bay did not significantly change in area. Loss of intertidal flats occurred intermittently along the eastern shore of the bay north of the Dumbarton Bridge. There was little or no loss from 1931 to 1956 and from 1983 to 2005. Predictions of future change in intertidal flat area that do not account for this spatial and temporal variability are not likely to be accurate. The causes of the spatial and temporal variability in intertidal flat area in South San Francisco Bay are not fully understood, but appear related to energy available to erode sediments, sediment redistribution from north to south in the bay, and sediment available to deposit on the flats. Improved understanding of sediment input to South San Francisco Bay, especially from Central Bay, how it is likely to change in the future, the redistribution of sediment within the bay, and ultimately its effect on intertidal flat area would aid in the management of restoration of South San Francisco Bay salt ponds.

Jaffe, Bruce; Foxgrover, Amy

2006-01-01

342

Diffusive Soil Degassing of Radon and Carbon Dioxide at San Miguel Volcano, El Salvador, Central America  

Science.gov (United States)

San Miguel volcano is located 15 km to the Southwest of San Miguel City (population ~300,000) and lies on the southern fault of the Central American graben at an intersection with NW-SE faults. The composition of San Miguel lavas varies from olivine-pyroxene basalts for the older lava flows to more andesitic compositions for the more recent products. This volcano have been degassing and having small ash emission since the late nineteen eighties. During December 1999 and January 2000, radon gas concentrations (pCi/l) in soils were measured using a Pylon AB5 radon monitor, and flux of CO2 (g/m2/day) was determined using the accumulation chamber method at 205 sampling stations. High gas emission inside the crater did not allow measurements to be taken in that region. CO2 fluxes throughout the soils of the volcanic edifice show low values compared to other active volcanoes of the world, suggesting that San Miguel is degassing preferentially throughout the summit region. CO2 fluxes range from less than 1 to 14 g/m2/day, with an average value of 5.6 g/m2/day. Radon concentrations range from 2 to 833 pCi/l with an average value of 110 pCi/l. Thoron concentrations range from 20 to 2178 pCi/l with an average value of 362 pCi/l. These values are comparable to radon concentrations found in other active volcanoes (e.g. Cerro Negro, Connor et al., 1996). CO2 flux, radon and thoron concentrations show higher values to the northwest and northeast faulted regions. Some anomalies seem to be related to the contact region between the older and more recent lava flows. Thoron/radon ratios show high anomalies aligning in the NW-SE direction where faulting also occurs. These results suggests that low permeability rocks forming the volcanic edifice of San Miguel volcano do not allow large fluxes of magmatic CO2 to be discharged throughout the soils. Higher permeability at faults and contacts allow slightly larger fluxes of CO2 and radon and thoron concentrations.

Lopez, D. L.; Olmos, R.; Cartagena, R.; Soriano, T.; Barahona, F.

2001-12-01

343

The slow recovery of San Francisco Bay from the legacy of organochlorine pesticides.  

Science.gov (United States)

The use of organochlorine pesticides, including DDTs, chlordanes, and dieldrin, peaked in San Francisco Bay's watershed 30-40 years ago, yet residues of the pesticides remain high. Known as legacy pesticides for their persistence in the Bay decades after their uses ended, the compounds and their breakdown products occur at concentrations high enough to contribute to advisories against the consumption of sport fish from the Bay. Combined with other data sets, the long-term monitoring data collected by the San Francisco Estuary Regional Monitoring Program (RMP) for trace substances allow us to track recovery of the Bay from these inputs and predict its future improvement. Legacy pesticides enter the water and sediment of San Francisco Bay from a variety of sources, including runoff from California's Central Valley and local watersheds, municipal and industrial wastewater, atmospheric deposition, erosion of historically contaminated sediment deposits, and dredging and disposal of dredged material. Runoff from small-urbanized tributaries may contribute as much or more to the loads than runoff from the agricultural Central Valley, even though 90 percent of the freshwater flow comes from the Central Valley via the Sacramento and San Joaquin rivers. The fates of legacy pesticides in San Francisco Bay are controlled by their chemical properties, including their solubilities and partition coefficients. Degradation in the sediments, outflow through the Golden Gate, and volatilization-in that relative order-result in removal of pesticides from the Bay. A contaminant fate model was used to estimate recovery times of the Bay under various scenarios. For example, under a scenario in which no new legacy pesticides entered the Bay, model predictions suggested that concentrations of pesticides in the water and the active sediment layer would reach risk-reduction goals within one to three decades. Under scenarios of continued inputs to the Bay, recovery time would be considerably longer or not reached at all. Long-term tissue monitoring corroborates model predictions of slow declines in DDT and chlordane concentrations. Field-transplanted bivalve samples indicate declines since 1980, and lipid-weight concentrations of pesticides have declined in fishes, but the declines are slow. The critical management question for the Bay is whether there are feasible management actions that would decrease concentrations in sport fish significantly faster than the existing slow progress that has been observed. PMID:16930588

Connor, Michael S; Davis, Jay A; Leatherbarrow, Jon; Greenfield, Ben K; Gunther, Andrew; Hardin, Dane; Mumley, Thomas; Oram, John J; Werme, Christine

2007-09-01

344

Impulsive radon emanation on a creeping segment of the San Andreas fault, California  

International Nuclear Information System (INIS)

Radon emanation was continuously monitored for several months at two locations along a creeping segment of the San Andreas fault in central California. The recorded emanations showed several impulsive increases that lasted as much as five hours with amplitudes considerably larger than meteorologically induced diurnal variations. Some of the radon increases were accompanied or followed by earthquakes or fault-creep events. They were possibly the result of some sudden outbursts of relatively radon-rich ground gas, sometimes triggered by crustal deformation or vibration. (Auth.)

345

Estudio geofisico del sector norte de las sierras deSan Luis y de Ulapes: Las Minas, provincia de La Rioja / Geophysical study the northern sector ofSierra de San Luis and Ulapes: Las Minas, province of La Rioja  

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: Spanish Abstract in spanish Un lineamiento de anomalíasgravimétricas relativas de Bouguer positivas (exceso de masa), de 60 km delongitud se extiende, con rumbo NNE, entre la localidad de San Francisco delMonte de Oro en la provincia de San Luis hasta el norte de las sierras deUlapes - Las Minas en la provincia de La Rioja. En [...] dicha faja las anomalíasmagnéticas tienen una magnitud similar a las halladas en los afloramientos deanfibolitas de las sierras de Socoscora, provincia de San Luis. Además, sepresenta otro máximo relativo de gravedad entre Villa General Roca y la sierrade Las Minas, sobre el cual las anomalías magnéticas medidas son débiles (casinulas) en concordancia con los valores de susceptibilidad magnéticadeterminados en los afloramientos de granitos, milonitas y gneises de lassierras de Las Minas, Ulapes y Socoscora. Se determinó una marcada coincidenciaentre una anomalía gravimétrica relativa de Bouguer positiva y una estructura(devónica?) con alteración hidrotermal al NE de la localidad de Ulapes. Abstract in english A 60 km long N-NE alignment of relativepositive Bouguer gravimetric anomalies (mass excess) has been recognizedbetween the locality San Francisco del Monte de Oro in San Luis Province and the northern part of Sierra of Ulapes- Las Minas in La Rioja Province. In this belt the magnetic anomalies havem [...] agnitude similar to those measured on the amphibolite outcrops in the Sierrade Socoscora. Another gravimetric maximum appear between Villa General Roca andSierra de Las Minas, which display weak magnetic anomalies (almost cero) inagreement with the magnetic susceptibility values obtained on granites, milonitesand gneissic outcrops from Sierras of Las Minas, Ulapes and Socoscora. There isan excellent correlationship between the relative positive Bouguer gravimetricanomaly in the NE of Ulapes locality and a known (Devonic?) structure withassociated hydrothermal alteration.

Gabriela, Ferracutti; José, Kostadinoff; Ernesto, Bjerg.

2009-06-01

346

Estudio geofisico del sector norte de las sierras deSan Luis y de Ulapes: Las Minas, provincia de La Rioja Geophysical study the northern sector ofSierra de San Luis and Ulapes: Las Minas, province of La Rioja  

Directory of Open Access Journals (Sweden)

Full Text Available Un lineamiento de anomalíasgravimétricas relativas de Bouguer positivas (exceso de masa, de 60 km delongitud se extiende, con rumbo NNE, entre la localidad de San Francisco delMonte de Oro en la provincia de San Luis hasta el norte de las sierras deUlapes - Las Minas en la provincia de La Rioja. En dicha faja las anomalíasmagnéticas tienen una magnitud similar a las halladas en los afloramientos deanfibolitas de las sierras de Socoscora, provincia de San Luis. Además, sepresenta otro máximo relativo de gravedad entre Villa General Roca y la sierrade Las Minas, sobre el cual las anomalías magnéticas medidas son débiles (casinulas en concordancia con los valores de susceptibilidad magnéticadeterminados en los afloramientos de granitos, milonitas y gneises de lassierras de Las Minas, Ulapes y Socoscora. Se determinó una marcada coincidenciaentre una anomalía gravimétrica relativa de Bouguer positiva y una estructura(devónica? con alteración hidrotermal al NE de la localidad de Ulapes.A 60 km long N-NE alignment of relativepositive Bouguer gravimetric anomalies (mass excess has been recognizedbetween the locality San Francisco del Monte de Oro in San Luis Province and the northern part of Sierra of Ulapes- Las Minas in La Rioja Province. In this belt the magnetic anomalies havemagnitude similar to those measured on the amphibolite outcrops in the Sierrade Socoscora. Another gravimetric maximum appear between Villa General Roca andSierra de Las Minas, which display weak magnetic anomalies (almost cero inagreement with the magnetic susceptibility values obtained on granites, milonitesand gneissic outcrops from Sierras of Las Minas, Ulapes and Socoscora. There isan excellent correlationship between the relative positive Bouguer gravimetricanomaly in the NE of Ulapes locality and a known (Devonic? structure withassociated hydrothermal alteration.

Gabriela Ferracutti

2009-06-01

347

75 FR 34481 - Notice of Reestablishment of the Santa Rosa and San Jacinto Mountains National Monument Advisory...  

Science.gov (United States)

...Rosa and San Jacinto Mountains National Monument Advisory Committee AGENCY: Bureau of...Rosa and San Jacinto Mountains National Monument Advisory Committee. FOR FURTHER INFORMATION...the Santa Rosa and San Jacinto National Monument Management Plan on lands...

2010-06-17

348

76 FR 4371 - Notice of Intent to Prepare an Environmental Impact Statement for the Proposed San Juan Basin...  

Science.gov (United States)

...Environmental Impact Statement for the Proposed San Juan Basin Energy Connect Project, San Juan County, New Mexico, and La Plata County, Colorado...Environmental Impact Statement (EIS) on the proposed San Juan Energy Connect Project, and by this notice...

2011-01-25

349

75 FR 41819 - Reorganization/Expansion of Foreign-Trade Zone 61 San Juan, Puerto Rico, Area  

Science.gov (United States)

...Expansion of Foreign-Trade Zone 61 San Juan, Puerto Rico, Area Pursuant to its...proposed Sites 14, 15 and 16) in the San Juan, Puerto Rico, area within and adjacent to the San Juan Customs and Border Protection...

2010-07-19

350

77 FR 32989 - Notice of Inventory Completion: U.S. Department of Agriculture, San Juan National Forest, Durango...  

Science.gov (United States)

...S. Department of Agriculture, San Juan National Forest, Durango, CO, and...S. Department of Agriculture, San Juan National Forest, Durango, CO, and...S. Department of Agriculture, San Juan National Forest in the Federal...

2012-06-04

351

78 FR 50104 - Notice of Inventory Completion: U.S. Department of the Interior, National Park Service, San Juan...  

Science.gov (United States)

...request to San Juan Island National Historical...Superintendent, San Juan Island National Historical...Native American Graves Protection and Repatriation Act...Park Service, San Juan Island National Historical...Thomas Burke Memorial Washington State Museum...

2013-08-16

352

Contaminants of antropic origin in groundwater San Juan (Argentina). Vulnerability and hydro chemical indicators; Contaminantes de origen antropico en aguas subterraneas San Juan (Argentina)  

Energy Technology Data Exchange (ETDEWEB)

The Tulum Valley aquifer vulnerability and its correlation with the behavior of hydro chemical parameters related to new urban neighborhoods and uncontrolled waste disposal are discussed. A high vulnerability to contamination by substances solved in the recharge water at the San Juan river shore is estimated. A fast transport rate due to the high permeability is foreseen, as well as the existence of contamination sources related to waste disposals and populations without a sewer system. The results show that the mentioned populations and waste disposal sites are located at vulnerable zones of the area. A higher concentration of nitrates and nitrites is observed at the Southeast, due to the short permanency period of the water in the system, and to the reconcentration in zones with less permeable levels. (Author) 19 refs.

Fiore, J. M.; Castro, A.; Medici, M. E.; Gimenez, M.; Suero, E.; Turcuman, M. H.

2002-07-01

353

Archaeometric study of the ceramics Tigrillo type from San Lorenzo Tenochtitlan, Veracruz, Mexico; Estudio arqueometrico de la ceramica tipo Tigrillo procedente de San Lorenzo Tenochtitlan, Veracruz, Mexico  

Energy Technology Data Exchange (ETDEWEB)

The archaeological locality of San Lorenzo is situated in Veracruz, Mexico and is considered one of the most important olmec culture settlements. On of the most typical ceramic materials founded in this site is Tigrillo type. The typological classification of olmec pottery from San Lorenzo was determinate trough physic characteristics, however, this study suggest the existence of variability inside this typology. Seven Tigrillo samples were analysed by qualitative petrography, mineragraphy and X-ray Powder Diffraction. The relation between the clay and the fillers was determined. The data shows that the most important components of the pottery are montmorillonite, and the added materials are mica, feldspars, hematite, goethite-limonite and quartz; also, glass splinter and ceramic fragments were identified, these two components are not present in all samples. On the other hand, a correlation with a previous study about the regional soil was carried out, to understand the supply sources for the original clay. The preliminary results suggest that the clay was obtained from soils of the locality and the fillers were imported from near areas and then processed and used. (Author) 5 refs., 1 tab., 4 figs.

Guevara M, M.E. [INAH, Mexico D.F. (Mexico); Cruz O, J.C. [Facultad de Ingenieria, UNAM, 04510 Mexico D.F. (Mexico); Cipres, A. [IIA, UNAM, 04510 Mexico D.F. (Mexico)]. e-mail: guevaramunoz2003@yahoo.com.mx

2004-07-01

354

Producción de flores en la agricultura urbana de San José de las Lajas, Cuba / Flowers production in the urban agriculture of San José de las Lajas, Cuba  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish Abstract in spanish El creciente aumento en el consumo de flores en el municipio San José de las Lajas ha provocado que se incluyan nuevas especies de flores de corte en los sistemas agrícolas, y con ello nuevas tecnologías de manejo. La capacitación in situ de los agricultores, facilitada por investigadores y por prod [...] uctores con mayor experiencia en este renglón productivo, fue llevada a cabo a través de talleres participativos y visitas de intercambio. Se consiguió incrementar la diversidad en tres especies (clavel chino, rosa y nardo) y se identificaron seis experimentos diseñados y conducidos por los productores y relacionados con la introducción de especies de flores, asociaciones y rotaciones, arreglos espaciales y conservación de semilla Abstract in english The growing increase in the consumption of flowers in the municipality San José de las Lajas has caused that new species of court flowers are included in the agricultural systems, and with it new handling technologies. The training in the farmers’ situ, facilitated by investigators and for producing [...] with more experience in this productive line, it was carried out through shops participatory and exchange visits. It was possible to increase the diversity in three species (chinese carnation, rose and nard) and six designed experiments were identified and driven by the producers and related with the introduction of species of flowers, associations and rotations, space arrangements and seed conservation

Ania, Yong Chou; Eduardo, Calves Somoza; Zoilo, Terán Vidal; Antoliano, Ramírez Medina; Ángel, Leyva Galán; María I, Pavón Rosales.

2014-09-01

355

Producción de flores en la agricultura urbana de San José de las Lajas, Cuba / Flowers production in the urban agriculture of San José de las Lajas, Cuba  

Scientific Electronic Library Online (English)

Full Text Available SciELO Cuba | Language: Spanish Abstract in spanish El creciente aumento en el consumo de flores en el municipio San José de las Lajas ha provocado que se incluyan nuevas especies de flores de corte en los sistemas agrícolas, y con ello nuevas tecnologías de manejo. La capacitación in situ de los agricultores, facilitada por investigadores y por prod [...] uctores con mayor experiencia en este renglón productivo, fue llevada a cabo a través de talleres participativos y visitas de intercambio. Se consiguió incrementar la diversidad en tres especies (clavel chino, rosa y nardo) y se identificaron seis experimentos diseñados y conducidos por los productores y relacionados con la introducción de especies de flores, asociaciones y rotaciones, arreglos espaciales y conservación de semilla Abstract in english The growing increase in the consumption of flowers in the municipality San José de las Lajas has caused that new species of court flowers are included in the agricultural systems, and with it new handling technologies. The training in the farmers’ situ, facilitated by investigators and for producing [...] with more experience in this productive line, it was carried out through shops participatory and exchange visits. It was possible to increase the diversity in three species (chinese carnation, rose and nard) and six designed experiments were identified and driven by the producers and related with the introduction of species of flowers, associations and rotations, space arrangements and seed conservation

Ania, Yong Chou; Eduardo, Calves Somoza; Zoilo, Terán Vidal; Antoliano, Ramírez Medina; Ángel, Leyva Galán; María I, Pavón Rosales.

356

Villa San Michele at Capri – 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 “Fairy World”, 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 Munthe’s Villa San Michele where it lays majestic, at home, as the guardian spirit of the place – 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: “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.” Let us enhance with the gaze of the Sphinx. For Nietzsche, the Sphinx becomes not the symbol of truth but of “truth”. 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 – 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

357

PET radiochemistry at Hospital San Raffaele, Milan (Milan Univ., Institute Hospital San Raffaele, Milan (IT))  

International Nuclear Information System (INIS)

A RDS-112 CTI-SIEMENS cyclotron has been installed at San Raffaele Hospital, Milan. Isotopes such as 13N, 15O, 18F and 52mMn are produced with very high radionuclide purity. At present 11C is contaminated with 14O (about 10%). Our daily production includes [18F]FDG and [13]NH3 and we are installing a gas delivery system (VICTOREEN) in order to supply 15O labelled gases. Two other radiopharmaceuticals, labelled with 18F, 16?-[18]fluoro-17?-estradiol and 2-[18F]fluoroethylspiperone, are also synthesized in our laboratories. Automation of the synthesis and purification of these agents is under development for their clinical application. (author) 3 figs., 5 tabs

358

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.

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

2012-12-01

359

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.

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

360

Deep Borehole Instrumentation Along San Francisco Bay Bridges - 2001  

Energy Technology Data Exchange (ETDEWEB)

This is a progress report on the Bay Bridges downhole network. Between 2 and 8 instruments have been spaced along the Dumbarton, San Mateo, Bay, and San Rafael bridges in San Francisco Bay, California. 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. The downhole instrument package contains a three component HS-1 seismometer and three orthogonal Wilcox 731 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. This report list earthquakes and stations where recordings were obtained during the period February 29, 2000 to November 11, 2000. Also, preliminary results on noise analysis for up and down hole recordings at Yerba Buena Island is presented.

Hutchings, L.; Kasameyer, P.; Long, L.; McEvilly, T.; Clymer, R.; Urhhammer, R.; Baise, L.

2001-05-01

 
 
 
 
361

SANS simulation of aggregated protein in aqueous solution  

Energy Technology Data Exchange (ETDEWEB)

Small-angle neutron scattering (SANS) of aggregated protein in an aqueous solution is simulated based on the crystallographic data of the protein. After obtaining the crystallographic data of the target protein, hydrogen atoms are added to the data and then some hydrogen atoms are replaced with deuterium atoms. The structure models are made with this data and then their gyration radii and SANS intensities are calculated. Compared the calculated SANS data with the experimental one, the most probable structure is determined. With this analysis method, the aggregate structure of proteasome {alpha}7-subunit (PRS{alpha}) in an aqueous solution was investigated. Three structural models, a simple monomer and two types of dimers, were supposed as the aggregated structure of PRS{alpha}. The analysis showed that the best compromised structure was the dimer, which was consistent with electron microscopy observation.

Sugiyama, Masaaki [Research Reactor Institute, Kyoto University, Kumatori, Osaka 590-0494 (Japan)], E-mail: sugiyama@rri.kyoto-u.ac.jp; Hamada, Kei [Research Reactor Institute, Kyoto University, Kumatori, Osaka 590-0494 (Japan); Kato, Koichi [Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8063 (Japan); Okazaki Institute for Integrative Bioscience and Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki, Aichi 444-8787 (Japan); Kurimoto, Eiji; Okamoto, Kenta [Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8063 (Japan); Morimoto, Yukio [Research Reactor Institute, Kyoto University, Kumatori, Osaka 590-0494 (Japan); Ikeda, Susumu; Naito, Sachio [High Energy Accelerator Research Organization, Ibaraki 305-0801 (Japan); Furusaka, Michihiko [Department of Mechanical Intelligence Engineering, Hokkaido University, Sapporo 060-8628 (Japan); Itoh, Keiji; Mori, Kazuhiro; Fukunaga, Toshiharu [Research Reactor Institute, Kyoto University, Kumatori, Osaka 590-0494 (Japan)

2009-02-21

362

SANS simulation of aggregated protein in aqueous solution  

International Nuclear Information System (INIS)

Small-angle neutron scattering (SANS) of aggregated protein in an aqueous solution is simulated based on the crystallographic data of the protein. After obtaining the crystallographic data of the target protein, hydrogen atoms are added to the data and then some hydrogen atoms are replaced with deuterium atoms. The structure models are made with this data and then their gyration radii and SANS intensities are calculated. Compared the calculated SANS data with the experimental one, the most probable structure is determined. With this analysis method, the aggregate structure of proteasome ?7-subunit (PRS?) in an aqueous solution was investigated. Three structural models, a simple monomer and two types of dimers, were supposed as the aggregated structure of PRS?. The analysis showed that the best compromised structure was the dimer, which was consistent with electron microscopy observation.

363

Neutron optics optimization for the SNS EQ-SANS diffractometer  

International Nuclear Information System (INIS)

The extended Q-range small angle neutron scattering (EQ-SANS) diffractometer at the Spallation Neutron Source has recently been completed. Initial commissioning has shown that it has achieved its high intensity, low background, and wide dynamic range design goals. One of the key components that enable these performances is its neutron optics, which are extensively optimized using analytical and Monte Carlo methods. The EQ-SANS optics consist of a curved multichannel beam bender and sections of straight neutron guides on both ends of the bender. The bender and the guide are made of float glass coated with supermirror multilayers. The function of the optics is to ensure low instrument background by avoiding the direct line of sight of the neutron moderator at downstream locations, while transporting thermal and cold neutrons to the sample with maximum efficiency. In this work, the optimization of the EQ-SANS optics is presented.

364

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

Directory of Open Access Journals (Sweden)

Full Text Available 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 in SMG. From the zoogeographical point of view, this chondrichthyan fauna is a mixed assemblage of species typically found in the Argentinean and Magellanean Provinces. The holocephalan Callorhinchus callorynchus is the most landed chondricthyan of the local fishery. With it, five sharks and seven skates are also exploited.El Golfo San Matías (SMG; 41°- 42° S - 64°-65° O se encuentra ubicado en el norte de la Patagonia, Argentina. Hasta la fecha no se cuentan con reportes de la fauna de condrictios de esta zona. Por lo tanto, el objetivo de este trabajo es proporcionar una lista de la presencia y las características biológicas de los condrictios registrados en el SMG durante los últimos 30 años. Un total de 13 tiburones distribuidos en 11 familias, 19 batoideos distribuidos en seis familias y un holocefalo han sido reportados para la zona. Desde el punto de vista zoogeográfico, el SMG presenta un ensamble de especies pertenecientes a las Provincias Magallánica y Argentina. El holocefalo Callorhinchus callorynchus es el condrictio más desembarcado de la pesquería local. Con menor importancia son explotadas comercialmente, cinco especies de tiburones y siete de rayas.

María R PERIER

2011-12-01

365

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: English Abstract in spanish El Golfo San Matías (SMG; 41°- 42° S - 64°-65° O) se encuentra ubicado en el norte de la Patagonia, Argentina. Hasta la fecha no se cuentan con reportes de la fauna de condrictios de esta zona. Por lo tanto, el objetivo de este trabajo es proporcionar una lista de la presencia y las características [...] biológicas de los condrictios registrados en el SMG durante los últimos 30 años. Un total de 13 tiburones distribuidos en 11 familias, 19 batoideos distribuidos en seis familias y un holocefalo han sido reportados para la zona. Desde el punto de vista zoogeográfico, el SMG presenta un ensamble de especies pertenecientes a las Provincias Magallánica y Argentina. El holocefalo Callorhinchus callorynchus es el condrictio más desembarcado de la pesquería local. Con menor importancia son explotadas comercialmente, cinco especies de tiburones y siete de rayas. Abstract in english 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 chondricht [...] hyans 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 in SMG. From the zoogeographical point of view, this chondrichthyan fauna is a mixed assemblage of species typically found in the Argentinean and Magellanean Provinces. The holocephalan Callorhinchus callorynchus is the most landed chondricthyan of the local fishery. With it, five sharks and seven skates are also exploited.

María R, PERIER; Marilú, ESTALLES; Nidia M, COLLER; Matías N, SUAREZ; Gimena J, MORA; Edgardo E, DI GIÁCOMO.

2011-12-01

366

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

Scientific Electronic Library Online (English)

Full Text Available SciELO Argentina | Language: English Abstract in spanish El Golfo San Matías (SMG; 41°- 42° S - 64°-65° O) se encuentra ubicado en el norte de la Patagonia, Argentina. Hasta la fecha no se cuentan con reportes de la fauna de condrictios de esta zona. Por lo tanto, el objetivo de este trabajo es proporcionar una lista de la presencia y las características [...] biológicas de los condrictios registrados en el SMG durante los últimos 30 años. Un total de 13 tiburones distribuidos en 11 familias, 19 batoideos distribuidos en seis familias y un holocefalo han sido reportados para la zona. Desde el punto de vista zoogeográfico, el SMG presenta un ensamble de especies pertenecientes a las Provincias Magallánica y Argentina. El holocefalo Callorhinchus callorynchus es el condrictio más desembarcado de la pesquería local. Con menor importancia son explotadas comercialmente, cinco especies de tiburones y siete de rayas. Abstract in english 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 chondricht [...] hyans 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 in SMG. From the zoogeographical point of view, this chondrichthyan fauna is a mixed assemblage of species typically found in the Argentinean and Magellanean Provinces. The holocephalan Callorhinchus callorynchus is the most landed chondricthyan of the local fishery. With it, five sharks and seven skates are also exploited.

María R, PERIER; Marilú, ESTALLES; Nidia M, COLLER; Matías N, SUAREZ; Gimena J, MORA; Edgardo E, DI GIÁCOMO.

367

Locating non-volcanic tremor along the San Andreas Fault using a multiple array source imaging technique  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Non-volcanic tremor (NVT) has been observed at several subduction zones and at the San Andreas Fault (SAF). Tremor locations are commonly derived by cross-correlating envelope-transformed seismic traces in combination with source-scanning techniques. Recently, they have also been located by using relative relocations with master events, that is low-frequency earthquakes that are part of the tremor; locations are derived by conventional traveltime-based methods. Here we present a method to loc...

Trond Ryberg; Christian Haberland;  fuis, G. S.;  ellsworth, W. L.;  shelly, David R.

2010-01-01

368

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

369

Detection of aseismic creep along the San Andreas fault near Parkfield, California with ERS-1 radar interferometry  

Science.gov (United States)

The differential interferometric analysis of ERS data from Parkfield (CA) observations revealed the wide area distribution of creep along the moving fault segment of the San Andreas fault over a 15 month interval. The removal of the interferometric phase related to the surface topography was carried out. The fault was clearly visible in the differential interferogram. The magnitude of the tropospheric water vapor phase distortions is greater than the signal and hinders quantitative analysis beyond order of magnitude calculations.

Werner, Charles L.; Rosen, Paul; Hensley, Scott; Fielding, Eric; Buckley, Sean

1997-01-01

370

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

371

Assessment of wet weather impact on clam (Chamelea gallina) faecal contamination in the district of San Benedetto del Tronto (Italy)  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Since 1998 clams (Chamelea gallina) from the production areas of the district of San Benedetto del Tronto (South Marche - Italy) have been periodically monitored to check the microbiological quality by the detection of the faecal indicator E. coli (MPN method). Results have been inconstant. They were not directly related to contamination sources identified by means of a Sanitary Survey. This one included a desk-based study of the physical, geographic, demographic and urban features of the dis...

Piero Capocasa; Vittoria Di Trani; Alessandra Aliventi; Semeraro Angela Marisa; Cesare Ciccarelli

2013-01-01

372

Assessment of wet weather impact on clam (Chamelea gallina) faecal contamination in the district of San Benedetto del Tronto (Italy)  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Since 1998 clams (Chamelea gallina) from the production areas of the district of San Benedetto del Tronto (South Marche - Italy) have been periodically monitored to check the microbiological quality by the detection of the faecal indicator E. coli (MPN method). Results have been inconstant. They were not directly related to contamination sources identified by means of a Sanitary Survey. This one included a desk-based study of the physical, geographic, demographic and urban features of the dis...

Piero Capocasa; Vittoria Di Trani; Alessandra Aliventi; Semeraro Angela Marisa; Cesare Ciccarelli

2012-01-01

373

Volcano-hazard zonation for San Vicente volcano, El Salvador  

Science.gov (United States)

San Vicente volcano, also known as Chichontepec, is one of many volcanoes along the volcanic arc in El Salvador. This composite volcano, located about 50 kilometers east of the capital city San Salvador, has a volume of about 130 cubic kilometers, rises to an altitude of about 2180 meters, and towers above major communities such as San Vicente, Tepetitan, Guadalupe, Zacatecoluca, and Tecoluca. In addition to the larger communities that surround the volcano, several smaller communities and coffee plantations are located on or around the flanks of the volcano, and major transportation routes are located near the lowermost southern and eastern flanks of the volcano. The population density and proximity around San Vicente volcano, as well as the proximity of major transportation routes, increase the risk that even small landslides or eruptions, likely to occur again, can have serious societal consequences. The eruptive history of San Vicente volcano is not well known, and there is no definitive record of historical eruptive activity. The last significant eruption occurred more than 1700 years ago, and perhaps long before permanent human habitation of the area. Nevertheless, this volcano has a very long history of repeated, and sometimes violent, eruptions, and at least once a large section of the volcano collapsed in a massive landslide. The oldest rocks associated with a volcanic center at San Vicente are more than 2 million years old. The volcano is composed of remnants of multiple eruptive centers that have migrated roughly eastward with time. Future eruptions of this volcano will pose substantial risk to surrounding communities.

Major, J.J.; Schilling, S.P.; Pullinger, C.R.; Escobar, C.D.; Howell, M.M.

2001-01-01

374

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

375

33 CFR 334.950 - Pacific Ocean at San Clemente Island, California; Navy shore bombardment areas.  

Science.gov (United States)

...obtaining permission from the Commander, Naval Base, San Diego or from the senior officer present in the area who may grant permission...present shall advise the Commander, Naval Base, San Diego when and to whom a...

2010-07-01

376

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

Science.gov (United States)

...Special Local Regulation and Safety Zone; America's Cup Sailing Events, San Francisco, CA AGENCY: Coast Guard, DHS. ACTION...selection series, and the ``America's Cup Finals Match'' sailing regattas that may be conducted in the waters of San...

2012-04-17

377

33 CFR 334.950 - Pacific Ocean at San Clemente Island, California; Navy shore bombardment areas.  

Science.gov (United States)

...San Clemente Island, California; Navy shore bombardment areas. 334.950 Section...San Clemente Island, California; Navy shore bombardment areas. (a) The danger...Corps. Hazardous conditions exist during shore bombardment by naval ships in the...

2010-07-01

378

75 FR 11194 - San Diego County Water Authority Natural Communities Conservation Program/Habitat Conservation...  

Science.gov (United States)

...80221-1112-0000-F2] San Diego County Water Authority Natural Communities Conservation Program/Habitat Conservation...the San Diego County Water Authority's (Water Authority/Applicant) draft Natural Communities Conservation Plan...

2010-03-10

379

75 FR 56889 - Revisions to the California State Implementation Plan, San Diego County Air Pollution Control...  

Science.gov (United States)

...Implementation Plan, San Diego County Air Pollution Control District AGENCY: Environmental...revisions to the San Diego County Air Pollution Control District (SDCAPCD) portion...Environmental protection, Air pollution control, Incorporation by...

2010-09-17

380

77 FR 65305 - Approval of Air Quality Implementation Plans; California; San Joaquin Valley Unified Air...  

Science.gov (United States)

...San Joaquin Valley Unified Air Pollution Control District; Prevention of Significant...San Joaquin Valley Unified Air Pollution Control District (District) portion...Subjects in 40 CFR part 52 Air pollution control, Carbon monoxide,...

2012-10-26