Note: This page contains sample records for the topic acuifero alto piura from Science.gov.
While these samples are representative of the content of Science.gov,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of Science.gov
to obtain the most current and comprehensive results.
Last update: November 12, 2013.
1

Modeling the impact of solute recycling on groundwater salinization under irrigated lands: A study of the Alto Piura aquifer, Peru  

NASA Astrophysics Data System (ADS)

A Quasi-3D model of flow and solute transport in the vadose zone and phreatic aquifer. Model accounts for solute recycling of pumped water used for irrigation. Application for simulating salinity changes in the Alto Piura aquifer, Peru.

Yakirevich, A.; Weisbrod, N.; Kuznetsov, M.; Rivera Villarreyes, C. A.; Benavent, I.; Chavez, A. M.; Ferrando, D.

2013-03-01

2

Quantifying Mechanisms of Aquifer Salinization at the Alto Piura Valley, Northern Part of Peru  

NASA Astrophysics Data System (ADS)

The Alto Piura aquifer (Peruvian northern coastal area) supports the important agricultural activity in the region and provides water supply for 150,000 residents. Recent studies show a salinization process in the northwest area of the aquifer. Further groundwater degradation could create economic and social problems for the region. An infiltration-tracer test in a typical agricultural field of the Alto Piura region was carried out to explore water and solute transport mechanisms. The main objective was to mimic the mechanism of flood irrigation (25 cm head once a month) typically used by Peruvian farmers in banana plots. Soil and groundwater contaminations were monitored in a 3x3 m area and a calcium chloride solution (3.07 m3) was injected as a tracer during the irrigation event. The initial and final conditions of the soil profile were studied by drilling three boreholes inside and one outside the plot prior to, and 2, 4, 7 and 10 days following the irrigation event. In total, 289 soil samples were collected to follow the gravimetric water content (GWC) and electrical conductivity (EC) profiles during the experiment. Soil samples were extracted in 20 cm resolution from the upper 2 m and 50 cm resolution for the rest of soil profile to 4.5 m, the initial watertable depth. Likewise, thirty groundwater samples were taken and analyzed for major ions, EC, and total dissolved solids (TDS). Bulk density and soil texture were also measured along the soil profiles. The GWC profiles indicated faster water movement through the unsaturated zone with respect to the salt movement. An infiltration test using double ring infiltrometer estimated Ks value of 0.24 m day-1.The EC soil profiles indicated a clear salt accumulation in the first 1 m layer that did not manifest changes until the end of the 10 day measurement period. Groundwater salinity varied within the 3x3 m zone. It increased, decreased or changed with time in respect to the initial salinity. This variability within the limited 3x3 m zone, suggests that preferential flow played a major role in the salt transport. The preferential transport of salts in some areas suggests that fertilization and flood irrigation events will produce both soil and groundwater salinization. Hydrus 2D/3D model was used to simulate water flow and solute transport of the infiltration test. GWC data, TDS values and watertable readings were used to calibrate soil hydraulic properties and dispersivity values. The simulation suggest a combined mechanism of salinization: the flood irrigation flushes down to the aquifer the accumulated solute from the first 1 m layer, producing new salt accumulation in the soil profile originating from external sources such as fertilizers. Simulations based on conventional Richards’ equation showed the necessity to incorporate preferential flow processes on a field-scale. Modeling of flow and transport in the aquifer, considering the irrigation return flow effect, presents the challenging avenue of the ongoing research.

Rivera Villarreyes, C. A.; Weisbrod, N.; Yakirevich, A.; Benavent, I.; Chavez, A. M.

2009-12-01

3

Low-latitude quasiperiodic echoes observed with the Piura VHF Radar in the E region  

NASA Astrophysics Data System (ADS)

We present the first quasiperiodic (QP) echoes from 3-m E region field-aligned irregularities observed in the Southamerican sector, just outside the magnetic equator (7.5°N geomagnetic). These QP echoes occur only at night and between 105 and 120 km. In general, Piura QP echoes present periods close to the Brunt-Väisälä period (5 to 10 min), striations with positive slopes and altitude rates of 20-25 m s-1 (upward/northward), striations spacings of 3 to 10 km, and downward/southward Doppler velocities. These results are compared to midlatitude QP echoes from 3- and 6-m irregularities observed between 13.3°N and 46.7°N geomagnetic. We found that the general characteristics that are common to our observations and other QP observations are the nighttime occurrence and the periods close to the Brunt-Väisälä period. On the other hand, the discrepancies with some of the QP echoes observed at mid-latitudes are found in the slope and spacing of the striations, the mean phase velocities, and the mean altitude location of the E layer containing the striations.

Chau, Jorge L.; Woodman, Ronald F.

4

The atmospheric circulation associated with extreme rainfall events in Piura, Peru, during the 1997--1998 and 2002 El Niño events  

Microsoft Academic Search

The lowland of Piura, in northwestern Peru, is very strongly impacted by El Niño. Its climate is arid but can experience very heavy rainfall associated with the high nearby sea surface temperature (SST) during El Niño events. Rainfall, however, tends to occur in discrete, intense events and an understanding of the physical conditions favoring a particular day with heavy rainfall

Ken Takahashi

2004-01-01

5

3. photocopy of an advertisement (from Penn Alto Hotel archives, ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

3. photocopy of an advertisement (from Penn Alto Hotel archives, Altoona, Pennsylvania) ADVERTISEMENT TO SELL STOCK IN PENN ALTO HOTEL - Penn Alto Hotel, 1120-1130 Thirteenth Avenue, Altoona, Blair County, PA

6

4. photocopy of an advertisement (from Penn Alto Hotel archives, ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

4. photocopy of an advertisement (from Penn Alto Hotel archives, Altoona, Pennsylvania) ADVERTISEMENT TO SELL STOCK IN PENN ALTO HOTEL - Penn Alto Hotel, 1120-1130 Thirteenth Avenue, Altoona, Blair County, PA

7

Maximizing scientific return at Calar Alto observatory  

Microsoft Academic Search

The following summarises changes in the scientific and technical operation of the Spanish-German astronomical center on Calar Alto which aim to maximise the scientific return. Most importantly, we introduce service observations which have the rationale to complete whenever possible the most highly ranked scientific programmes, and to carry out the programme at the meteorological conditions which are best suited for

Roland Gredel

2002-01-01

8

Rare isotope production at the ALTO facility  

NASA Astrophysics Data System (ADS)

The ALTO facility (Accélérateur Linéaire et Tandem d'Orsay) at Institut de Physique Nucléaire d'Orsay received its authorization for operating. The aim of this facility is to provide neutron rich isotope beams for both nuclear physics study (far from the valley of stability) and developments dedicated to next generation facilities such as SPIRAL2. The neutron rich isotopes are produced by photo-fission of ^238U induced by the 50 MeV 10 ?A electrons from the linear accelerator. The isotopes coming out from the fission target effuse towards an ion source and are extracted to the on line separator PARRNe. Additional experimental beam line has been constructed and a new detection system BEDO (BEta Decay studies at Orsay) has been mounted and commissioned. The central element of the BEDO is a complex of Compton suppressed germanium detectors and plastic scintillators dedicated to study beta-decay. Gamma rays from the beta decay of ^84Ga isotopes were measured with the prototype of the BEDO system. The gallium atoms were selectively ionized with a newly developed laser ion source. We have improved level schemes of certain descendants of gallium: ^83,84Ge and ^84As. The experimental results will be presented and compared with the shell model calculation.

Kolos, Karolina

2012-10-01

9

Multimedia information retrieval at FX Palo Alto Laboratory  

NASA Astrophysics Data System (ADS)

This paper describes research activities at FX Palo Alto Laboratory (FXPAL) in the area of multimedia browsing, search, and retrieval. We first consider interfaces for organization and management of personal photo collections. We then survey our work on interactive video search and retrieval. Throughout we discuss the evolution of both the research challenges in these areas and our proposed solutions.

Cooper, Matthew L.; Adcock, John; Girgensohn, Andreas; Pickens, Jeremy; Wilcox, Lynn

2011-02-01

10

Gamma-Beta-Neutron Detectors Set-Up at ALTO  

SciTech Connect

A multi detection system consisted of 90 {sup 3}He counters, gamma detector and beta detector has been installed at beamline of the accelerator complex ALTO. The system allows performing direct measurements of probability of delayed neutron emission from spontaneous fission fragments. A trial experiment was carried out to test the detection system created.

Testov, D.; Penionzhkevich, Yu.; Smirnov, V.; Sokol, E. [Flerov laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna (Russian Federation); Ancelin, S.; Ibrahim, F.; Niikura, M.; Tastet, B.; Verney, D. [Institute de Physique Nucleaire d'Orsay (France)

2010-04-30

11

Alto Paraguay Alkaline Province: petrographic, geochemical and geochronological characteristics.  

National Technical Information Service (NTIS)

The Alto Paraguay Province is located at the border of the State of Mato Grosso do Sul and Paraguay, between the coordinates 21 deg 10(sup ')to 23 deg 25(sup ')of Southern latitude and 57 deg 10(sup ') to 58 deg 00(sup '), having the city of Porto Murtinh...

V. Velazquez Fernandez

1996-01-01

12

The Gran Telescopio Canarias and Calar Alto public archives  

NASA Astrophysics Data System (ADS)

In this paper we describe the main characteristics and functionalities of the Gran Telescopio Canarias (GTC) and Calar Alto public archives. The archives have been developed in the framework of the Spanish Virtual Observatory and are maintained by the Data Archive Unit at Centro de Astrobiología (CAB, INTA-CSIC). The archives contain both raw and science ready data and have been designed in compliance with the standards defined by the International Virtual Observatory Alliance (IVOA) which guarantees a high level of data accessibility and handling.

Solano, E.; Gutiérrez, R.; Alacid, J. M.; Jiménez-Esteban, F.; Velasco, A.

2013-05-01

13

The Calar Alto Observatory: current status and future instrumentation  

NASA Astrophysics Data System (ADS)

The Calar Alto Observatory, located at 2168 m height above the sea level in continental Europe, holds a significant number of astronomical telescopes and experiments, covering a large range of the electromagnetic domain, from gamma-ray to near-infrared. It is a very well characterized site, with excellent logistics. Its main telescopes includes a large suite of instruments. At the present time, new instruments, namely CAFE, PANIC and Carmenes, are under development. We are also planning a new operational scheme in order to optimize the observatory resources.

Barrado, D.; Thiele, U.; Aceituno, J.; Pedraz, S.; Sánchez, S. F.; Aguirre, A.; Alises, M.; Bergond, G.; Galadí, D.; Guijarro, A.; Hoyo, F.; Mast, D.; Montoya, L.; Sengupta, Ch.; de Guindos, E.; Solano, E.

2011-11-01

14

The Arctic Lower Troposphere Observed Structure (ALTOS) Campaign  

SciTech Connect

The ALTOS campaign focuses on operating a tethered observing system for routine in situ sampling of low-level (< 2 km) Arctic clouds. It has been a long-term hope to fly tethered systems at Barrow, Alaska, but it is clear that the Federal Aviation Administration (FAA) will not permit in-cloud tether systems at Barrow, even if unmanned aerial vehicle (UAV) operations are allowed in the future. We have provided the scientific rationale for long-term, routine in situ measurements of cloud and aerosol properties in the Arctic. The existing restricted air space at Oliktok offers an opportunity to do so.

Verlinde, J

2010-10-18

15

Mapcat: Monitoring AGN with Polarimetry at the Calar Alto Telescopes  

NASA Astrophysics Data System (ADS)

We introduce MAPCAT, a long-term observing program for "Monitoring of AGN with Polarimetry at the Calar Alto Telescopes". Multi-spectral-range studies are critical to understand some of the most relevant current problems of high energy astrophysics of blazars such as their high energy emission mechanisms and the location of their ?-ray emission region through event associations across the spectrum. Adding multi-spectral-range polarimetry allows for even more reliable identification of polarized flares across the spectrum in these kind of objects, as well as for more accurate modeling of their magnetic field. As part of a major international effort to study the long term multi-spectral range polarimetric behavior of blazars, MAPCAT uses -since mid 2007- CAFOS on the 2.2m Telescope at the Calar Alto Observatory (Almería, Spain) to obtain monthly optical (R-band) photo-polarimetric measurements of a sample of 34 of the brightest ?-ray, optical, and radio-millimeter blazars accessible from the northern hemisphere.

Agudo, Iván; Molina, Sol N.; Gómez, José L.; Marscher, Alan P.; Jorstad, Svetlana G.; Heidt, Jochen

16

PANIC: the new panoramic NIR camera for Calar Alto  

NASA Astrophysics Data System (ADS)

PANIC is a wide-field NIR camera, which is currently under development for the Calar Alto observatory (CAHA) in Spain. It uses a mosaic of four Hawaii-2RG detectors and covers the spectral range from 0.8-2.5 ?m (z to K-band). The field-of-view is 30×30 arcmin. This instrument can be used at the 2.2m telescope (0.45arcsec/pixel, 0.5×0.5 degree FOV) and at the 3.5m telescope (0.23arcsec/pixel, 0.25×0.25 degree FOV). The operating temperature is about 77K, achieved by liquid Nitrogen cooling. The cryogenic optics has three flat folding mirrors with diameters up to 282 mm and nine lenses with diameters between 130 mm and 255 mm. A compact filter unit can carry up to 19 filters distributed over four filter wheels. Narrow band (1%) filters can be used. The instrument has a diameter of 1.1 m and it is about 1 m long. The weight limit of 400 kg at the 2.2m telescope requires a light-weight cryostat design. The aluminium vacuum vessel and radiation shield have wall thicknesses of only 6 mm and 3 mm respectively.

Baumeister, Harald; Alter, Matthias; Cárdenas Vázquez, M. Concepción; Fernandez, Matilde; Fried, Josef; Helmling, Jens; Huber, Armin; Ibáñez Mengual, Jose-Miguel; Rodríguez Gómez, Julio F.; Laun, Werner; Lenzen, Rainer; Mall, Ulrich; Naranjo, Vianak; Ramos, Jose-Ricardo; Rohloff, Ralf-Rainer; García Segura, Antonio; Storz, Clemens; Ubierna, Marcos; Wagner, Karl

2008-08-01

17

Photogrammetric recording of the archaeological site of Pinchango Alto (Palpa, Peru) using a mini helicopter (UAV)  

Microsoft Academic Search

In this paper we describe a new system for the recording of archaeological sites based on an autonomous UAV (unmanned aerial vehicle) that has recently been employed in the framework of the Nasca-Palpa Archaeological Project on the south coast of Peru. In the vicinity of Palpa, the prehispanic site of Pinchango Alto is an attractive, yet difficult target for archaeological

Henri Eisenbeiss; Karsten Lambers; Martin Sauerbier

18

Maize in ancient Ecuador: results of residue analysis of stone tools from the Real Alto site  

Microsoft Academic Search

The antiquity of maize (Zea mays, Poaceae) in Ecuador, and its role in Formative Period subsistence, are topics of current debate. Real Alto, a large Early Formative village at which maize was first identified by phytolith analysis, remains at the center of this debate. We present new microfossil data, maize cob phytoliths and starch granules recovered from 17 stone tools

Deborah M Pearsall; Karol Chandler-Ezell; James A Zeidler

2004-01-01

19

Rb-Sr measurements on metamorphic rocks from the Barro Alto Complex, Goias, Brazil.  

National Technical Information Service (NTIS)

The Barro Alto Complex comprises a highly deformed and metamorphosed association of plutonic, volcanic, and sedimentary rocks exposed in a 150 x 25 Km boomerang-like strip in Central Goias, Brazil. It is the southernmost tip of an extensive yet discontinu...

R. A. Fuck B. B. B. Neves U. G. Cordani K. Kawashita

1988-01-01

20

Assessing impact of hunting mammals in Alto Itaya river basin, Peruvian  

Microsoft Academic Search

This work report information about of the abundance, hunting pressure and hunting impact on mammal's populations inhabits forests of the Alto Itaya river basin. Information was collected from censuses of transects and hunting records, carried out in six communities. The Woolly Monkey (Lagothrix poeppigii Schinz) was the most abundant with 15,4 individuals\\/km², while the red howler Lagothrix poeppigii Schinz) was

Rolando Aquino; C. Terrones; R. Navarro; Wagner Terrones

21

Entre aromas de incienso y pólvora: Los Altos de Jalisco, México, 1917-1940  

Microsoft Academic Search

This thesis focuses on the Mexican Revolution and on the opposition strategies followed by the opponents of the revolutionary regime who lived in the region known as Los Altos de Jalisco. In this particular region, the Catholic population, supported by the Clergy, was in constant conflict with the revolutionary government. It shows how the new revolutionary rationale clashed with the

José Luis López Ulloa

2008-01-01

22

Schooling and Critical Citizenship: Pedagogies of Political Agency in El Alto, Bolivia  

ERIC Educational Resources Information Center

|This article explores the formation of citizenship as social practice in a school in El Alto, Bolivia. I examine interactions between "banking" forms of education, students' responses, and embodied practices of belonging and political agency, and argue that the seemingly passive forms of knowledge transmission so criticized by critical pedagogy…

Lazar, Sian

2010-01-01

23

Occupational safety and health practices among flower greenhouses workers from Alto Tietê region (Brazil)  

Microsoft Academic Search

In this preliminary study the occupational safety and health practices among flower greenhouses workers were evaluated. the study was carried out in the alto tietê region, located at the sao paulo state, brazil. inadequate welfare facilities; poor pesticide storage, use and disposal conditions; use of highly toxic pesticides; lack of adequate data regarding pesticide use; and incorrect use and maintenance

Marcela G. Ribeiro; Camilla G. Colasso; Paula P. Monteiro; Walter R. Pedreira Filho; Maurício Yonamine

24

Assessment of Change Drivers Affecting the Sustainability of Gravity Fed Water Supply in the Alto Beni Watershed of Bolivia  

Microsoft Academic Search

In the Alto Beni region of Bolivia, most communities rely on gravity fed systems for their drinking water. Gravity fed drinking water systems are often viewed as a feasible and sustainable method of delivering safe natural spring water to developing communities, because minimal treatment is required and pumping is unnecessary. However, communities in the Alto Beni watershed are finding the

L. M. Fry; J. R. Mihelcic; D. W. Watkins; N. Reents

2008-01-01

25

Weathering rates at Alto Sorocaba basin, Brazil, using U-isotopes and major cations  

Microsoft Academic Search

The aim of this paper was to evaluate the chemical weathering rate at Alto Sorocaba basin, São Paulo State, Brazil, as it\\u000a is an important parameter on geomorphological characterization of continents. Several tools may be used for such evaluation,\\u000a and this work compares the results obtained from analytical data involving the uranium concentration, the 234U\\/238U activity ratio and the major

D. S. Sardinha; Daniel Marcos Bonotto; F. T. da Conceição

2010-01-01

26

The Calar Alto Deep Imaging Survey: K-band Galaxy number counts  

Microsoft Academic Search

We present K-band number counts for the faint galaxies in the Calar Alto Deep Imaging Survey (CADIS). We covered 4 CADIS fields, a total area of 0.2 deg2, in the broad band filters B, R and K. We detect about 4000 galaxies in the K-band images, with a completeness limit of K=19.75 mag, and derive the K-band galaxy number counts

J.-S. Huang; D. Thompson; M. W. Kümmel; K. Meisenheimer; C. Wolf; S. V. W. Beckwith; R. Fockenbrock; J. W. Fried; H. Hippelein; B. von Kuhlmann; S. Phleps; H.-J. Röser; E. Thommes

2001-01-01

27

Mössbauer study of archaeological ceramics from Valle del Alto Sinu (Colombia)  

NASA Astrophysics Data System (ADS)

A physico-chemical characterization of ceramic samples from the arachaeological sites of El Cabrero, El Gallo, and El Frasquillo (Valle del Alto Sinú) is presented. Extensive use of Mössbauer spectroscopy data reveals that the currently used typological classification scheme of Dolmatoff is related to the production technology of the different artifacts. In addition, a model for firing conditions for “Rojo Sencillo”, “Tierra Impresa”, “Tierra Incisa”, and “Blanco” types of ceramics is proposed.

Useche, L. A.; Gaviria, S.; Alabart, J. R.; Fontcuberta, J.

1990-07-01

28

Early Proterozoic Evolution of the Alto Jauru Greenstone Belt, Southern Amazonian Craton, Brazil  

Microsoft Academic Search

The Alto Jauru Greenstone Belt in west-central Brazil comprises three belts of Early Proterozoic volcano-sedimentary sucessions that were invaded by Early to Middle Proterozoic intrusions, including tonalites, gabbros, and granites. Volcanic rocks represent a bimodal suite with ultrabasic-basic rocks of komatiitic-tholeiitic affinities at the base and intermediate-felsic calc-alkaline lavas and pyroclastic units on the top. Chemical differences exist between basic

Francisco E. C. Pinho; William S. Fyfe; Marcia A. S. B. Pinho

1997-01-01

29

Liquefaction Hazard Maps for Three Earthquake Scenarios for the Communities of San Jose, Campbell, Cupertino, Los Altos, Los Gatos,, Milpitas, Mountain View, Palo Alto, Santa Clara, Saratoga, and Sunnyvale, Northern Santa Clara County, California.  

National Technical Information Service (NTIS)

Maps showing the probability of surface manifestations of liquefaction in the northern Santa Clara Valley were prepared with liquefaction probability curves. The area includes the communities of San Jose, Campbell, Cupertino, Los Altos, Los Gatos Milpitas...

M. J. Bennett T. E. Noce T. L. Holzer

2008-01-01

30

The Gran Telescopio Canarias and Calar Alto Virtual Observatory compliant archives  

NASA Astrophysics Data System (ADS)

The Gran Telescopio Canarias (GTC) and Calar Alto archives are the result of the collaboration agreements between the Centro de Astrobiología (CAB, INTA-CSIC)) and two entities: GRANTECAN S.A. and the Centro Astronómico Hispano Alemán (CAHA). The archives have been developed in the framework of the Spanish Virtual Observatory and are maintained by the Data Archive Unit at CAB. The archives contain both raw and science ready data and have been designed in compliance with the standards defined by the International Virtual Observatory Alliance (IVOA) which guarantees a high level of data accessibility and handling. In this paper we describe the main characteristics and functionalities of both archives.

Solano, Enrique; Gutiérrez, Raúl; Alacid, José Manuel; Jiménez-Esteban, Francisco; Velasco Trasmonte, Almudena

2012-09-01

31

Aetiology of ovine footrot in the Portuguese region of Alto Alentejo.  

PubMed

In this work, we found it appropriate to carry out a study directed towards isolating and identifying the entailed microorganisms which trigger off footrot in sheep, placing special emphasis on the serotipification of the different Dichelobacter nodosus species. With this goal in mind four flocks from the Portuguese region of 'Alto Alentejo' were selected, all of them had one common feature: their main health problem was ovine footrot. We also set out to determine the elastolitic capacity of isolated strict-anaerobic bacteria, in order to be able to clarify the direct involvement of these microorganisms in the outbreak of this infectious process. PMID:12667188

Jiménez, R; Píriz, S; Martín-Palomino, P; Mateos, E; Vadillo, S

2003-04-01

32

Petrology and geochemistry of Alto Peak, a vapor-cored hydrothermal system, Leyte Province, Philippines  

SciTech Connect

Based on detailed petrological information on secondary mineral assemblages and the composition of fluids trapped in inclusions and discharged from five wells, the Alto Peak geothermal field was found to represent a combined vapor and liquid-dominated system. A central core or chimney, with a diameter of about 1 km, a height of some 3 km and occupied by a high gas vapor (1.1 to 5.6 molal CO{sub 2}), is surrounded by an envelope of intermediate salinity water (7,000 mg/kg Cl) with temperatures between 250 and 350 C. The transition from purely vapor-dominated to liquid-dominated zones takes place via two-phase zones occupied by fluid mixtures of highly variable compositions. Much of the lower temperature, mature neutral pH Cl water is likely to have formed during an earlier stage in the evolution of the system. High temperatures of > 300 C, and associated alteration, are limited to wells AP-1D and the lower parts of AP-2D and are ascribed to re-heating by recent magmatic intrusions. The isotopic composition of the well discharges suggests that they contain some 40 to 50% of magmatic water. Alto Peak is considered a typical example of hydrothermal systems associated with many dormant volcanoes.

Reyes, A.G. [Philippine National Oil Co.-Energy Development Corp., Fort Bonifacio (Philippines). Geothermal Div.]|[Inst. of Geological and Nuclear Sciences, Lower Hutt (New Zealand); Giggenbach, W.F. [Inst. of Geological and Nuclear Sciences, Lower Hutt (New Zealand); Saleras, J.R.M.; Salonga, N.D.; Vergara, M.C. [Philippine National Oil Co.-Energy Development Corp., Fort Bonifacio (Philippines). Geothermal Div.

1993-10-01

33

The Night Sky at the Calar Alto Observatory II: The Sky at the Near-infrared  

NASA Astrophysics Data System (ADS)

We present the characterization of additional properties of the night sky at the Calar Alto observatory, following the study started by Sánchez et al. in 2007. We focus here on the night-sky brightness at the near-infrared, the telescope seeing, and the fraction of useful time at the observatory. For this study we have collected a large data set comprising 7311 near-infrared images taken regularly along the last four years for the ALHAMBRA survey (, , and bands), together with a more reduced data set of additional near-infrared images taken for the current study. In addition, we collected the information derived by the meteorological station at the observatory during the last 10 yar, together with the results from the cloud sensor for the last . We analyze the dependency of the near-infrared night-sky brightness with the air mass and the seasons, studying its origins and proposing a zenithal correction. A strong correlation is found between the night-sky brightness in the band and the air temperature, with a gradient of per 1°C. The typical (darkest) night-sky brightness in the , , and -band are 15.95 mag (16.95 mag), 13.99 mag (14.98 mag), and 12.39 mag (13.55 mag), respectively. These values have been derived for the first time for this observatory, showing that Calar Alto is as dark in the near-infrared as most of the other astronomical sites in the world with which we could compare it. Only Mauna Kea is clearly darker in the band, but not only compared to Calar Alto but to any other observatory in the world. The typical telescope seeing and its distribution were derived on the basis of the FWHM of the stars detected in the considered near-infrared images. This value, when converted to the band, is only slightly larger than the atmospheric seeing measured at the same time by the seeing monitor, . Therefore, the effects different from the atmosphere produce a reduced degradation on the telescope seeing, of the order of . Finally we estimate the fraction of useful time based on the relative humidity, gust wind speed, and presence of clouds. This fraction, , is very similar to the one derived in 2007, based on the fraction of time when the extinction monitor is working.

Sánchez, S. F.; Thiele, U.; Aceituno, J.; Cristobal, D.; Perea, J.; Alves, J.

2008-11-01

34

Nutrient content of earthworms consumed by Ye'Kuana Amerindians of the Alto Orinoco of Venezuela.  

PubMed Central

For the Makiritare (Ye'Kuana) native people of the Alto Orinoco (Venezuela), earthworms (Anellida: Glossoscolecidae) are an important component of the diet. Two species in particular are widely consumed: 'kuru' (Andiorrhinus kuru n. sp.) and 'motto' (Andiorrhinus motto). We analysed eviscerated kuru body proper, and whole and smoked preparations of motto for their content of protein and amino acids, fatty acids and 20 minerals and trace elements. The samples contained large amounts of protein (64.5-72.9% of dry weight), essential amino acids, calcium and iron together with notable quantities of other important elements, indicating that these earthworms contain potentially useful quantities of many nutrients that are critical to the health of the humans who consume them.

Paoletti, M G; Buscardo, E; VanderJagt, D J; Pastuszyn, A; Pizzoferrato, L; Huang, Y-S; Chuang, L-T; Millson, M; Cerda, H; Torres, F; Glew, R H

2003-01-01

35

Ucx target developments for the ALTO and the SPIRAL 2 projects  

NASA Astrophysics Data System (ADS)

The ALTO project (Accélérateur Linéaire auprès du Tandem d’Orsay) will provide an electron beam available at IPN Orsay at the end of 2005. The maximum energy will be 50 MeV with a maximum average intensity of 10 ?A. It will be used for photofission in UCx targets. With the same target as that already used on the PARRNE set up it will be possible using ALTO to induce up to 1011 fissions/s instead of 109 previously obtained with the 26 MeV/1 ?A deuteron beam. Several ion sources will be adapted on the set up: ISOLDE FEBIAD type, surface ionization, laser,…. Moreover the electron beam could be used for other applications. Calculation about fission, energy deposition and dose rate will be presented, as well as the target ion source adaptation on the PARRNE facility. For the SPIRAL 2 project planned at GANIL for 2008, the fission of 238U in uranium carbide target will be induced by a neutron flow created by bombarding a carbon converter with a 40 MeV high intensity deuteron beam. The target has been designed to reach more than 1013 fissions/s with a good release time. Calculation and technical considerations used to optimize the target design are detailed. One of main difficulties for this target is to maintain it at high temperature (more than 2000 °C) during 3 months. A tantalum oven has been studied and a prototype is under test at IPN Orsay. Some R&D studies on a high density target are in progress in collaboration with PNPI Gatchina and INFN Legnaro.

Bajeat, Olivier; Cheikh Mhamed, Maher; Essabaa, Said; Huguet, Yves; Ibrahim, Fadi; Lau, Christophe; Lecesne, Nathalie; Leherrissier, Patrick; Leroy, Renan; Mirea, Mihai; Pellemoine, Frédérique; Roussière, Brigitte; Saint-Laurent, Marie G.; Sauvage, Jocelyne; Verney, David

2006-06-01

36

MEJORADORES DE LA FERTILIDAD DEL SUELO EN LA AGRICULTURA DE LADERA DE LOS ALTOS DE CHIAPAS, MÉXICO IMPROVEMENT OF SOIL FERTILITY IN HILLSIDE AGRICULTURE OF LOS ALTOS DE CHIAPAS, MÉXICO  

Microsoft Academic Search

Current agricultural production in Los Altos de Chiapas region faces some problems such as soil erosion and loss of fertility, di- minishment of work productivity and increasing incapacity to pro- vide work and basic food for family members. These problems are the result of an excessive pressure on the land, the irregular topog- raphy, the agricultural land dispersion and atomization,

Luciano Pool-Novelo; Antonio Trinidad-Santos; Jorge D. Etchevers-Barra; Jesús Pérez-Moreno; Angel Martínez-Garza

2000-01-01

37

TRAS LA PISTA DEL INCA EN PETROGLIFOS PARAVECINALES AL QHAPAQÑAN EN EL ALTO LOA, NORTE DE CHILE IN THE FOOTSTEPS OF THE INCA THROUGH NEIGHBOURING PETROGLYPHS SITES ALONG THE QHAPAQÑAN IN ALTO LOA, NORTHERN CHILE  

Microsoft Academic Search

La duda acerca de si en realidad existió un arte rupestre propiamente incaico ha obsesionado a los investigadores durante décadas. En este artículo se discute este problema con datos del sitio SBa-518, un pequeño asentamiento agropastoril con arte rupestre figurativo tanto naturalista como esquemático, situado a un kilómetro del camino inca del Alto Loa, Región de Antofagasta, norte de Chile.

Diego Artigas

2007-01-01

38

Refining the age of magmatism in the Altos Cuchumatanes, western Guatemala, by LA–ICPMS, and tectonic implications  

Microsoft Academic Search

The Altos Cuchumatanes Range is made up of a core of igneous and metamorphic rocks, surrounded by lower Palaeozoic and Mesozoic sedimentary strata. These units constitute the westernmost exposure of basement rocks in Guatemala and represent some of the most important crustal units in the Maya Block. New laser ablation–inductively coupled plasma mass spectrometry U-Pb zircon geochronology allows better definition

Luigi A. Solari; F. Ortega-Gutiérrez; M. Elías-Herrera; A. Gómez-Tuena; P. Schaaf

2010-01-01

39

Geophysical signatures of some recently discovered large (> 40 ha) kimberlite pipes on the Alto Cuilo concession in northeastern Angola  

Microsoft Academic Search

This paper presents a comparison of geophysical responses from several large kimberlite complexes discovered and delineated on the Alto Cuilo concession in the diamond fields of northeastern Angola in the years 2005 to 2008. Several geophysical methods were used in combination with geochemical and mineralogical prioritization techniques to guide exploratory, delineation and bulk sample drilling, in order to rapidly identify

Wayne Pettit

2009-01-01

40

An ethnobotanical survey of medicinal plants commercialized in the markets of La Paz and El Alto, Bolivia  

Microsoft Academic Search

An ethnobotanical study of medicinal plants marketed in La Paz and El Alto cities in the Bolivian Andes, reported medicinal information for about 129 species, belonging to 55 vascular plant families and one uncertain lichen family. The most important family was Asteraceae with 22 species, followed by Fabaceae s.l. with 11, and Solanaceae with eight. More than 90 general medicinal

Manuel J. Macía; Emilia García; Prem Jai Vidaurre

2005-01-01

41

Combining photogrammetry and laser scanning for the recording and modelling of the Late Intermediate Period site of Pinchango Alto, Palpa, Peru  

Microsoft Academic Search

This paper describes the 3D modelling of Pinchango Alto, Peru, based on a combination of image and range data. Digital photogrammetry and laser scanning allow archaeological sites to be recorded efficiently and in detail even under unfavourable conditions. In 2004 we documented Pinchango Alto, a typical site of the hitherto poorly studied Late Intermediate Period on the south coast of

Karsten Lambers; Henri Eisenbeiss; Martin Sauerbier; Denise Kupferschmidt; Thomas Gaisecker; Soheil Sotoodeh; Thomas Hanusch

2007-01-01

42

New Early Triassic Paleomagnetic Pole for South America from the Alto Paraguay Alkaline Province  

NASA Astrophysics Data System (ADS)

The Alto Paraguay Province consists of a series of ring complexes that parallel the Paraguay river (the border between Brazil and Paraguay) for more than 40 km.Intrusive to subintrusive rocks are prodominant, and are usually topped by lava flows and ignimbrites, although one large lava field is also present. The province is well dated by different radiometric methods with ages ranging mainly from 240 to 250 Ma. Samples were collected from different levels of seven complexes which were submitted to both alternating field and thermal demagnetizations. Normal and reversed characteristic magnetic components were isolated, and magnetites were identified as the main magnetic carriers. The resulting paleomagnetic pole is located at 319E 78S (á=6; k=23) based on 26 samples. This pole plots within the large field defined by other available poles supposed to be same age, as they lack precise dating. It matches also the corresponding mean pole for Africa, and represents a good candidate to better define the Early Triassic pole position for South America.

Ernesto, M.

2005-05-01

43

A search for wide visual companions of exoplanet host stars: The Calar Alto Survey  

NASA Astrophysics Data System (ADS)

We have carried out a search for co-moving stellar and substellar companions around 18 exoplanet host stars with the infrared camera MAGIC at the 2.2 m Calar Alto telescope, by comparing our images with images from the all sky surveys 2MASS, POSS I and II. Four stars of the sample namely HD 80606, 55 Cnc, HD 46375 and BD-10°3166, are listed as binaries in the Washington Visual Double Star Catalogue (WDS). The binary nature of HD 80606, 55 Cnc, and HD 46375 is confirmed with both astrometry as well as photometry, thereby the proper motion of the companion of HD 46375 was determined here for the first time. We derived the companion masses as well as the longterm stability regions for additional companions in these three binary systems. We can rule out further stellar companions around all stars in the sample with projected separations between 270 AU and 2500 AU, being sensitive to substellar companions with masses down to ˜ 60 {MJup} (S/N=3). Furthermore we present evidence that the two components of the WDS binary BD-10°3166 are unrelated stars, i.e this system is a visual pair. The spectrophotometric distance of the primary (a K0 dwarf) is ˜ 67 pc, whereas the presumable secondary BD-10°3166 B (a M4 to M5 dwarf) is located at a distance of 13 pc in the foreground.

Mugrauer, M.; Neuhäuser, R.; Mazeh, T.; Guenther, E.; Fernández, M.; Broeg, C.

2006-05-01

44

[Report of four clinical cases of filariasis in Alto Nanay, Loreto].  

PubMed

This study describes the clinical, parasitological and laboratory findings of four patients who lived in the district of Alto Nanay, Maynas, Loreto, Peru and were infected with Mansonella ozzardi microfilariae. Clinical examinations by ophthalmologists, cardiologists and nephrologists were performed. In case 1, the presence of 2 subcutaneous lumps was the most important finding, one at dorsal level and the other in the lower third of the left leg; in case 2, there was a sensation of tingling or coldness in the legs; in case 3, an associated chronic hepatitis B infection was found, and in case 4, a large lump was detected in the left lumbar region. All 4 patients were infected with Mansonella ozzardi and had eosinophilia, 3 of them in percentages of 20%. The lump found in case 4 was due to a herniation of bowel content. Further clinical studies and an evaluation of the actual pathogenic effect of microfilariae are to be performed. A study of the genetic diversity of filariae in the Peruvian Amazon would also be important. PMID:24100830

Vargas-Herrera, Javier; Arróspide-Velasco, Nancy; Gutierrez-González, Sonia; Celis-Salinas, Juan C; Huamaní-Solano, Daniel; Loza-Hermenegildo, Luis; Elgegren-Lao, Julio; Armas-Montes, José; Baca-Pérez, Juan; Cabezas, César

2013-09-01

45

Visible and near-IR observations of transneptunian objects. Results from ESO and Calar Alto Telescopes  

NASA Astrophysics Data System (ADS)

We present visible (BVRI) and near-IR (JHKs) broadband photometry and visible low-dispersion spectroscopy of Transneptunian Objects (TNOs) and Centaurs. In total, 16 TNOs and 1 Centaur were observed over the past two years at ESO telescopes in La Silla and Paranal in Chile as well as at the Calar Alto Observatory in Spain. The sample consists of objects measured for the first time and those for which comparison data is available from literature. The targets were: 1992QB1, 1993RO, 1994EV3, 1995HM5, 1995SM55, 1996RQ20, 1996TL66, 1996TO66, 1996TP66, 1997CQ29, 1997CS29, 1998HK151, 1998TF35, 1998VG44, 1998WH24, 1998XY95, 1999TC36. The spectra of 5 TNOs (1995SM55, 1996TO66, 1997CQ29, 1997CS29, 1998HK151) show almost constant gradients over the visible wavelength range with only marginal indication for a flatter slope beyond 750-800 nm. The photometric colour gradients obtained quasi-simultaneously are in good agreement with the spectral data. This suggests that in general photometric colour gradients are a valuable diagnostic tool for spectral type classification of TNOs. The photometric study revealed a number of new objects with neutral and red colours. For re-measured objects the published broadband colours were - in general - confirmed, although a few remarkable exceptions exist. Two TNOs appear to be outlyers according to the available broadband colours: 1993EV3 and 1995HM5. 1995SM55 is the bluest TNO measured so far. No clear global correlation between V-I colour and absolute R filter brightness of our TNO targets is found. However, the data for the 5 brightest TNOs (brighter than 5 mag absolute magnitude) could also be interpreted with a linear increase of V-I colour by about 0.75 mag per brightness magnitude. The colour-colour diagrams show continuous reddening of the TNOs in V-R vs. B-V, R-I vs. B-V and R-I vs. V-R. The bimodality suggested from earlier measurements of Tegler & Romanishin (\\cite{Tegler98}) is not confirmed. According to our colour gradient statistics (number of objects per gradient interval) most of the TNOs have surface reddening between 0 and 40%/100 nm. For the Cubewanos the major population falls between 20-40%/100 nm. The Plutinos and Centaurs show a bifold grouping, i.e. a neutral/slightly reddish group (reddening <20%/100 nm) and a red group (reddening 30-40%/100 nm). The statistical significance of the various populations found is suffering - for the Centaurs and scattered disk objects very severely - from the small number of objects measured. However, the diversity of the reddening distribution of Centaurs/Plutinos and Cubewanos, if confirmed by new observations, may indicate a different balancing of resurfacing processes for these object types: for instance, for Centaurs a possibility is that re-condensed frost from coma activity may be dominant over impact re-surfacing and high energy surface processing. Based on observations performed at the European Southern Observatory at La Silla and Paranal in Chile and at the German Spanish Astronomical Centre at Calar Alto in Spain, operated by the Max-Planck-Institut für Astronomie, Heidelberg, jointly with the Spanish National Commission for Astronomy.

Boehnhardt, H.; Tozzi, G. P.; Birkle, K.; Hainaut, O.; Sekiguchi, T.; Vair, M.; Watanabe, J.; Rupprecht, G.; FORS Instrument Team

2001-11-01

46

Fish mercury concentration in the Alto Pantanal, Brazil: influence of season and water parameters.  

PubMed

The tropical flood plain Pantanal is one of the world's largest wetlands and a wildlife sanctuary. Mercury (Hg) emissions from some upstream gold mining areas and recent findings of high natural Hg levels in tropical oxisols motivated studies on the Hg cycle in the Pantanal. A survey was made on total Hg in the most consumed piscivorous fish species from rivers and floodplain lakes in the north (Cáceres and Barão de Melgaço) and in the south part of Alto Pantanal (around the confluence of the Cuiabá and Paraguai rivers). Samples were collected in both the rainy and dry seasons (March and August 1998) and included piranha (Serrasalmus spp.), and catfish (Pseudoplatystoma coruscans, pintado, and Pseudoplatystoma fasciatum, cachara or surubim). There was only a small spatial variation in Hg concentration of the 185 analyzed fish samples from the 200 x 200 km large investigation area, and 90% contained total Hg concentration below the safety limit for regular fish consumption (500 ng g(-1)). Concentration above this limit was found in both Pseudoplatystoma and Serrasalmus samples from the Baia Siá Mariana, the only acid soft-water lake included in this study, during both the rainy and dry seasons. Concentration above this limit was also found in fish outside Baia Siá Mariana during the dry season, especially in Rio Cuiabá in the region of Barão de Melgaço. The seasonal effect may be connected with decreasing water volumes and changing habitat during the dry season. The results indicate that fertile women should restrict their consumption of piscivorous fishes from the Rio Cuiabá basin during the dry season. Measures should be implanted to avoid a further deterioration of fish Hg levels. PMID:11036973

Hylander, L D; Pinto, F N; Guimarães, J R; Meili, M; Oliveira, L J; de Castro e Silva, E

2000-10-16

47

Parental Magma Characterization of Salitre Cumulate Rocks (Alto Paranaíba Alkaline Province, Brazil) as Inferred from Mineralogical, Petrographic, and Geochemical Data  

Microsoft Academic Search

The Alto Paranaiba alkaline province (?82 Ma), tectonically associated with a NW-trending linear structure bordering the São Francisco craton, consists of a wide variety of igneous forms and magma types. It includes several alkaline-carbonatite complexes, some of which are quite important economically.The Salitre complex is represented by two interconnected oval-shaped bodies, N-S-aligned and variable in size, emplaced into Proterozoic metasedimentary

L. Morbidelli; C. B. Gomes; L. Beccaluva; P. Brotzu; C. Garbarino; B. F. Riffel; E. Ruberti; G. Traversa

1997-01-01

48

Assessment of Change Drivers Affecting the Sustainability of Gravity Fed Water Supply in the Alto Beni Watershed of Bolivia  

NASA Astrophysics Data System (ADS)

In the Alto Beni region of Bolivia, most communities rely on gravity fed systems for their drinking water. Gravity fed drinking water systems are often viewed as a feasible and sustainable method of delivering safe natural spring water to developing communities, because minimal treatment is required and pumping is unnecessary. However, communities in the Alto Beni watershed are finding the need to extend their systems to more distant springs to provide sufficient water. Drivers of change within the watershed that have the potential to affect the sustainability of gravity fed water systems include a 3% population growth rate, an expected 200% increase in agricultural use of land, expansion of water and sanitation coverage (83% and 72% increases in coverage respectively), and a changing climate with a roughly 1.5% projected increase in the mean annual temperature from the 1990s and a 2 to 4% decrease in dry season precipitation by the 2030s. These changes affect both demand and supply from springs. Indicators for these change drivers are evaluated in seventeen watersheds within the Alto Beni. The research presented is the beginning of a monitoring program using low cost methods and local participants to study the impacts of changes on the sustainability of water systems in the region.

Fry, L. M.; Mihelcic, J. R.; Watkins, D. W.; Reents, N.

2008-12-01

49

Distribution of surnames over the Alto Adige-Südtirol region according to local geographic, historical and linguistic features.  

PubMed

This paper aims at analysing the distribution of surnames over the Alto Adige-Südtirol, which is an Italian alpine sub-region coinciding with the province of Bolzano-Bozen. Two thirds of the Alto Adige-Südtirol inhabitants are German mother-tongue, whereas the remaining one third is Italian mother-tongue. There is also a minority represented by Ladin-speaking people. Analyses were carried out using a similarity index between different populations, resulting from heads of family surnames distribution over the area. The specificity of the most frequent surnames was also studied. Mapping of surnames took place at municipality level. Municipality populations were grouped according to their valley of residence and territorial geologic and morphological features. The results were interpreted also in the light of historical events and the presence of specific languages or dialects. The geographic neighbourhood, the geo-morphological features of the territory and the easy individual mobility are the main elements for the relations among people living in the valleys of Alto Adige-Südtirol. The ancient ethno-historical substratum is detectable in the spread of the specific languages and dialects, nevertheless it does not play a discriminative role in the above mentioned relations. The socio-economic factors have contributed both to root the autochthonous people in certain places and to modify the structure of surnames in some valleys. PMID:19739467

Caravello, GianUmberto; Tasso, Miro; Pizzetti, Paola; Lucchetti, Enzo

2009-06-01

50

Guanaco traces and hunting strategies at Alto Patache North Chilean fog oasis  

NASA Astrophysics Data System (ADS)

1. In foregoing Fog Conferences, some of us have made explicit the rich botanic and faunistic inventory to be found at this Chilean Fog site. This was specially apparent under strong ENSO conditions, as it happened in 1997/98 in the area. Among the mammal biggest species represented, the guanaco (Lama guanicoe Müller) merits special mention. Clear traces of their presence and eventual hunting and slaughtering by primitive populations have survived until present times. Among them, the myriads of guanaco trails still covering practically all the slopes along the foggy area, close to the sea, and their wollowing and defecating places are found. Also, although less studied, plant eating traces left behind by roaming camelids can be seen. 2. Guanaco hunting traces still visible at Alto Patache can be portrayed differently through : A) Analysis of lithic artifacts used as arms in hunting operations; B) Botanic response to animal attack; C) Examination of topographic traits used by primitive man in guanaco hunting strategies. A. Hundreds of lithic instruments made of stone, were abandoned by hunters in situ, some of them were intact, some fragmented, which would demonstrate a direct relationship with hunting and slaughtering, and also their elaboration in workshops at place. Lithic points, scrapers and knives were found at places specially apt for hunting or slaughtering activities. Total isolation of the mountain fog site previous to our arrival in 1996, favoured their conservation at place. B. Careful observation of some local plants showed clear traces of guanaco feeding habits. As a proof thereof, old cactus of the species Eulychnia iquiquensis show in their basal portions clear signals in the forms of scars, caused by the eating by guanacos. Guanaco faeces were found at the foot of Ephedra plants. Many dead Stipa ichu plants (Gramineae), in different areas of the oasis provide evidence of cutting close to their basis, caused by sharp guanaco tooth under severe food scarcity. C. Special lookouts located at high places offering clear visibility were used by hunters. Some were built up, some others consisted of natural stone arrangements. The same can be said for the wollowing places, located in plains with loose or sandy soils. Pictures showing different artifacts, plants or topographic traits used, will be presented here as evidence of guanaco hunting activity at place.

Larrain, H.; Cereceda, P.; Pérez, L.

2010-07-01

51

Liquefaction Hazard Maps for Three Earthquake Scenarios for the Communities of San Jose, Campbell, Cupertino, Los Altos, Los Gatos, Milpitas, Mountain View, Palo Alto, Santa Clara, Saratoga, and Sunnyvale, Northern Santa Clara County, California  

USGS Publications Warehouse

Maps showing the probability of surface manifestations of liquefaction in the northern Santa Clara Valley were prepared with liquefaction probability curves. The area includes the communities of San Jose, Campbell, Cupertino, Los Altos, Los Gatos Milpitas, Mountain View, Palo Alto, Santa Clara, Saratoga, and Sunnyvale. The probability curves were based on complementary cumulative frequency distributions of the liquefaction potential index (LPI) for surficial geologic units in the study area. LPI values were computed with extensive cone penetration test soundings. Maps were developed for three earthquake scenarios, an M7.8 on the San Andreas Fault comparable to the 1906 event, an M6.7 on the Hayward Fault comparable to the 1868 event, and an M6.9 on the Calaveras Fault. Ground motions were estimated with the Boore and Atkinson (2008) attenuation relation. Liquefaction is predicted for all three events in young Holocene levee deposits along the major creeks. Liquefaction probabilities are highest for the M7.8 earthquake, ranging from 0.33 to 0.37 if a 1.5-m deep water table is assumed, and 0.10 to 0.14 if a 5-m deep water table is assumed. Liquefaction probabilities of the other surficial geologic units are less than 0.05. Probabilities for the scenario earthquakes are generally consistent with observations during historical earthquakes.

Holzer, Thomas L.; Noce, Thomas E.; Bennett, Michael J.

2008-01-01

52

Sero-epidemiological study of canine Leishmania spp. infection in the municipality of Alijó (Alto Douro, Portugal).  

PubMed

Visceral leishmaniosis caused by Leishmania infantum is a zoonotic disease in the Mediterranean basin. We report an epidemiological survey carried out in dogs from the municipality of Alijó in the endemic region of Alto Douro (north Portugal). Performance of the direct agglutination test (DAT) was assessed in 205 matching samples of blood collected on filter paper and serum. A high degree of agreement (97.6%; k = 0.83) was found between the results obtained from both types of samples. DAT was then used to test more blood on filter paper (B-FP) samples from other dogs of the same municipality. The detected sero-prevalence was 18.7% (288/1540), with values ranging from 0.0 to 81.1% in each of the 19 parishes of Alijó. Three distinct geographical zones of mean sero-prevalence could be defined: northwestern (2.5%), intermediate (11.4%) and southern (49.9%). No statistically significant difference was observed between male (19.1%) and female (17.8%) sero-prevalences (P = 0.560). Dogs of 9-11 years of age showed the highest sero-prevalence (28.4%), but all the other age-intervals (0-2, 3-5, 6-8 and 12-17 years) presented values (15.0-22.3%) not significantly different from the mean of the whole study population. Risk factors for canine Leishmania infection were age and geographical zone. Only 5.9% of the sero-positive animals had clinical signs of canine leishmaniosis and the overall prevalence of disease was 1.1%. This study validates the use of B-FP samples and confirms DAT as a simple and sensitive serological test to evaluate the level of canine Leishmania infection in areas of high sero-prevalence. PMID:15110400

Cardoso, Luís; Rodrigues, Manuela; Santos, Helder; Schoone, Gerard J; Carreta, Pedro; Varejão, Eugénio; van Benthem, Birgit; Afonso, M Odete; Alves-Pires, Carlos; Semião-Santos, Saul J; Rodrigues, Jorge; Schallig, Henk D F H

2004-05-01

53

Runoff and Sediment Losses from Annual and Unusual Storm Events from the Alto Experimental Watersheds, Texas: 23 Years after Silvicultural Treatments  

Microsoft Academic Search

Evaluating the potential impacts of intensive silvicultural practices on water quality is critical for establishing the long-term sustainability of contemporary forest management practices. From 1979 to 1985, a study involving nine small (~2.5 ha) forested watersheds was conducted near Alto, Texas in the upper western Gulf-Coastal Plain to evaluate the impacts then-current silvicultural practices on water quality. In the years

Matthew McBroom; R. Scott Beasley; Mingteh Chang; Brian Gowin; George Ice

54

Crisp clustering of airborne geophysical data from the Alto Ligonha pegmatite field, northeastern Mozambique, to predict zones of increased rare earth element potential  

NASA Astrophysics Data System (ADS)

The National Geology Directorate of Mozambique (DNG) and Maputo-based Eduardo-Mondlane University (UEM) entered a joint venture with the South African Council for Geoscience (CGS) to conduct a case study over the meso-Proterozoic Alto Ligonha pegmatite field in the Zambézia Province of northeastern Mozambique to support the local exploration and mining sectors. Rare-metal minerals, i.e. tantalum and niobium, as well as rare-earth minerals have been mined in the Alto Ligonha pegmatite field since decades, but due to the civil war (1977-1992) production nearly ceased. The Government now strives to promote mining in the region as contribution to poverty alleviation. This study was undertaken to facilitate the extraction of geological information from the high resolution airborne magnetic and radiometric data sets recently acquired through a World Bank funded survey and mapping project. The aim was to generate a value-added map from the airborne geophysical data that is easier to read and use by the exploration and mining industries than mere airborne geophysical grid data or maps. As a first step towards clustering, thorium (Th) and potassium (K) concentrations were determined from the airborne geophysical data as well as apparent magnetic susceptibility and first vertical magnetic gradient data. These four datasets were projected onto a 100 m spaced regular grid to assemble 850,000 four-element (multivariate) sample vectors over the study area. Classification of the sample vectors using crisp clustering based upon the Euclidian distance between sample and class centre provided a (pseudo-) geology map or value-added map, respectively, displaying the spatial distribution of six different classes in the study area. To learn the quality of sample allocation, the degree of membership of each sample vector was determined using a-posterior discriminant analysis. Geophysical ground truth control was essential to allocate geology/geophysical attributes to the six classes. The highest probability to meet pegmatite bodies is in close vicinity to (magnetic) amphibole schist occurring in areas where depletion of potassium as indication of metasomatic processes is evident from the airborne radiometric data. Clustering has proven to be a fast and effective method to compile value-added maps from multivariate geophysical datasets. Experience made in the Alto Ligonha pegmatite field encourages adopting this new methodology for mapping other parts of the Mozambique Fold Belt.

Eberle, Detlef G.; Daudi, Elias X. F.; Muiuane, Elônio A.; Nyabeze, Peter; Pontavida, Alfredo M.

2012-01-01

55

Coaching como herramienta de liderazgo para el desarrollo de equipos de alto desempeño en el área de ventas (Coaching like tool of leadership for the development of teams of high acting in the area of sales)  

Microsoft Academic Search

Resumen. El presente artículo busca vincular el coaching como herramienta de liderazgo para el desarrollo de equipos de alto desempeño en el área de ventas. Para cumplir con este propósito se realizó una revisión de bibliografía y documentos publicados en la web sobre a esta temática, que permitieron definir conceptualmente su relación con el coaching y los distintos estilos de

Fidel Moreno

2009-01-01

56

The risk of Ascaris lumbricoides infection in children as an environmental health indicator to guide preventive activities in Capara? and Alto Capara?, Brazil.  

PubMed Central

OBJECTIVE: To develop an environmental health indicator for use as a basis for developing preventive measures against Ascaris lumbricoides infection in children from the rural municipalities of Caparaó and Alto Caparaó, in Minas Gerais, Brazil. METHODS: A cross-sectional survey was conducted between May and September 1998 among 1171 children under 14 years of age living in 588 dwellings selected from 11 communities. Trained interviewers used a questionnaire to identify risk factors for infection (socioeconomic, sanitation and hygiene variables) and collected stool samples from each child for parasitological tests. RESULTS: The overall prevalence of A. lumbricoides infection was 12.2%. The results showed the protective effects of availability of water in the washbasin and better hygiene, sanitation and socioeconomic status; the interactive effect of crowding was five times larger in households without water in the washbasin than in those having water. There was a statistically significant association between infection and children's age. CONCLUSION: The environmental health indicator, which incorporated the most significant biological, environmental and social factors associated with the risk of A. lumbricoides infection in children from these communities, should contribute to the development of surveillance tools and health protection measures in this population.

Carneiro, Fernando Ferreira; Cifuentes, Enrique; Tellez-Rojo, Martha Maria; Romieu, Isabelle

2002-01-01

57

Study of a population of Biomphalaria tenagophila (Orbigny, 1835) and of schistosomiasis transmission in "Alto da Boa Vista", Rio de Janeiro.  

PubMed

The present study was performed using data from a Biomphalaria tenagophila population located in a watercress garden in the Alto da Boa Vista region representing an isolated focal point of schistosomiasis in the city of Rio de Janeiro. The density and age structure of this B. tenagophila population and its rate of infection by Schistosoma mansoni were studied for a period of 15 months. The snail population showed seasonal variation in density, with a decrease in number of individuals at the beginning of the rainy season. At the end of this season, the population consisted mainly of adults (92.8% in May 1985 and 82.8% in April 1986). The population growth curve was logistic and of sigmoidal configuration. Schistosoma mansoni cercariae were eliminated over a short period of time (March, April and May 1986). The release of cercariae of S. mansoni and of birds seems to depend on environmental temperature, which during certain months would show a daily variation of up to 13 degrees C, with the lower thermal limit approaching the limit value for sporocyte development. PMID:2520827

Baptista, D F; Vasconcelos, M C; Schall, V T

58

The Los Altos Writing Project.  

ERIC Educational Resources Information Center

|The intent of this guide is to encourage teachers to have students write, both formally and informally, on a systematic basis. Three types of writing are emphasized: (1) journal writing; (2) research paper writing; and (3) essay writing. The section on journal writing includes a handout for the class explaining the purpose for journal writing and…

Kraft, Richard F.

59

El Universo a alto redshift  

NASA Astrophysics Data System (ADS)

The Universe we see today is the result of structures and galaxies that have been evolving since earlier times. Looking the evolution of the galaxy population at z ˜ 1 has emphasized the important role played by high redshift data. This is the case of the morphology - density relationship, where the morphological type of galaxies in distant clusters has given us a clear vision of evolutionary processes, partly led by environmental effects. I review part of the data available at high redshifts that are fundamental today to check the validity of galaxy formation models in reproducing local and basic galaxy properties. Briefly, I will comment about high redshift studies, a still little explored portion of the Universe, and the current strategies that allow us the study. In this sense, the epoch of reionization is essential for understanding the formation of structures because it is the phase where the first protogalaxies were formed, creating stars and enriching the intergalactic medium. Because of the great distances involved in these studies, gamma-ray bursts, quasars and Lyman-? galaxies are the best tools to study these earlier times. FULL TEXT IN SPANISH

Alonso, M. V.

60

Climate change and development impacts on the sustainability of spring-fed water supply systems in the Alto Beni region of Bolivia  

NASA Astrophysics Data System (ADS)

In the Alto Beni region of Bolivia, as in other locations of the developing world, gravity-fed water supply systems provide a significant portion of domestic water needs. However, sustainability of these sources depends on whether discharge can be sustained to accommodate future water needs. There is a perception that agricultural expansion in the region is resulting in reduced spring discharge. To investigate this claim, we incorporate low-cost field methods for hydrologic data collection and evaluate two satellite-derived precipitation data products (CMORPH and TRMM-3B42) for input to a hydrological model used to predict recharge rates in eleven watersheds under scenarios of climate change and agricultural expansion. The stressors on the local water supply examined in this study are changes in land use and climate, along with increases in population and consumption, and improvements in water and sanitation coverage. Although predicted changes in runoff range from -69% to +137%, depending on the climate and land use scenario, recharge is predicted to decrease under all scenarios (by 28% to nearly 100%) between the periods of 1970-1999 and 2070-2099. The predicted impacts from climate change are considerably larger than those from agricultural expansion, calling into question local perceptions that spring flow has declined because of changes in land use from agricultural growth. The ratio of water use to availability under most scenarios of climate change and water and sanitation service expansion suggests that use of groundwater is sustainable in the region when considering the entire recharge to the watersheds. However, the small recharge areas of the springs may result in insufficient recharge to support planned water and sanitation expansion unless new water supplies are developed.

Fry, Lauren M.; Watkins, David W.; Reents, Nathan; Rowe, Mark D.; Mihelcic, James R.

2012-10-01

61

Hip Hop as Empowerment: Voices in El Alto, Bolivia  

ERIC Educational Resources Information Center

|In response to neoliberal policies that have been in place since 1985, Bolivian young people have increasingly used hip hop music as a means of protest and to reclaim social and political participation. Hip hop in Latin America tells the story of the struggles that marginalized people have suffered, and speaks to the effects of international…

Tarifa, Ariana

2012-01-01

62

PREVENTION OF DEPRESSION AND OF SUICIDE IN ALTO ADIGE  

Microsoft Academic Search

Summary According to data given by OMS, suicide is a serious problem in all the world and it reaches all the cultures, all the religions, all the languages and all the social levels. No cause of death like suicide leaves such a deep sorrow to one's relatives and friends, so much so that the risk of death among the relatives

63

Contenido y fracciones de micronutrientes en suelos del alto  

Microsoft Academic Search

The objectives of this study were to determine the chemical fractions of Fe, Cu, Mn, and Zn in apple trees grown in soils of the upper Rio Negro Valley, and to analyze some physical and chemical properties of the soils that affect redistribution of these elements into more available chemical forms. Soil samples were taken at 0-25 cm depth in

ALTO VALLE

64

Hip hop as empowerment: voices in El Alto, Bolivia  

Microsoft Academic Search

In response to neoliberal policies that have been in place since 1985, Bolivian young people have increasingly used hip hop music as a means of protest and to reclaim social and political participation. Hip hop in Latin America tells the story of the struggles that marginalized people have suffered, and speaks to the effects of international policies fueled by globalization.

Ariana Tarifa

2012-01-01

65

Investigations at the Pueblo Alto Complex Chaco Canyon, New Mexico, 1975-1979. Volume 1. Summary of Tests and Excavations at the Pueblo Alto Community.  

National Technical Information Service (NTIS)

The Branch of Cultural Research, formerly known as the Chaco Center, was established in 1971 to conduct multidisciplinary research in the area of Chaco Canyon, New Mexico. From 1971 through March 1986, this was a joint National Park Service/University of ...

T. C. Windes

1987-01-01

66

Geologic map and map database of the Palo Alto 30' x 60' quadrangle, California  

USGS Publications Warehouse

This digital map database, compiled from previously published and unpublished data, and new mapping by the authors, represents the general distribution of bedrock and surficial deposits in the mapped area. Together with the accompanying text file (pamf.ps, pamf.pdf, pamf.txt), it provides current information on the geologic structure and stratigraphy of the area covered. The database delineates map units that are identified by general age and lithology following the stratigraphic nomenclature of the U.S. Geological Survey. The scale of the source maps limits the spatial resolution (scale) of the database to 1:62,500 or smaller.

Brabb, E. E.; Jones, D. L.; Graymer, R. W.

2000-01-01

67

Laboratory performance tests of PANIC, the panoramic NIR imager for Calar Alto  

NASA Astrophysics Data System (ADS)

PANIC is developed at MPIA, Heidelberg, Germany and IAA, Granada, Spain. This instrument will cover a field of view of 0.5x0.5 degrees at the 2.2m telescope in the spectral bands Z to K. All hardware has been manufactured, the instrument is currently assembled and tested. In this contribution we describe results of some tests.

Fried, Josef W.; Huber, Armin; Storz, Clemens; Mall, Ulrich; Naranjo, Vianak; Bizenberger, Peter; Cárdenas Vazquez, M. Concepción

2012-09-01

68

Stop Disease: Diapering Procedures = Alto a las Enfermedades: Procedimientos para Cambiar Panales.  

ERIC Educational Resources Information Center

In order to prevent the occurrence and spread of disease in California child care programs, this set of laminated procedure pages, in English and Spanish versions, details infant and child care procedures for safe diapering. The document delineates important rules about diapering, gives directions for making a disinfecting solution, and provides…

California Child Care Health Program, Oakland.

69

Antropología médica de la Leishmaniasis Tegumentaria Americana (LTA). Un estudio de caso en alto Paraná misionero  

Microsoft Academic Search

This paper describes first results of a research project about social representations and practices in a risk group of Tegumentary Leishmaniasis (Argentina NE, Misiones province). Main objective of this field research is to contribute for based on evidence prevention planning, trying to ensure disease scientific information about prevention and treatment flow by proper social nets in the area under studying.

Gladys Fattore; Sandra G. Pereira

70

ADICIÓN DE ALTOS NIVELES DE BIOTINA EN DIETAS PARA CERDAS PUBERES Y GESTANTES 1  

Microsoft Academic Search

Addition of high levels of biotin to diets for gilts in prepuber and pregnant stages. Twenty one gilts of commercial Hampshire, Duroc and Yorkshire breeds were distributed in an experiment carried out to evaluate the effect of biotin addition on the productive behavior of sow's commercial bread and their progeny. The experiment was carried out in Saltillo, Coahuila, México, from

Ramón F. García Castillo; José L. Jasso Pitol; Regino Morones Reza; Jorge R. Kawas Garza; Jaime Salinas Chavira

2006-01-01

71

ADICIÓN DE ALTOS NIVELES DE BIOTINA EN DIETAS PARA CERDAS PUBERES Y GESTANTES1  

Microsoft Academic Search

Addition of high levels of biotin to diets for gilts in prepuber and pregnant stages. Twenty one gilts of commercial Hampshire, Duroc and Yorkshire breeds were distributed in an experiment carried out to evaluate the effect of biotin addition on the productive behavior of sow's commercial bread and their progeny. The experiment was carried out in Saltillo, Coahuila, México, from

Ramón F. García Castillo; José L. Jasso Pitol; Regino Morones Reza; Jorge R. Kawas Garza; Jaime Salinas Chavira

72

‘Altreier Kaffee’: Lupinus pilosus L. cultivated as coffee substitute in Northern Italy (Alto Adige\\/Südtirol)  

Microsoft Academic Search

The continued cultivation of Lupinus pilosus L. as an endemic coffee substitute in the mountain village of Altrei, South Tyrol, located in the Val di Fiemme\\/Fleimstal\\u000a valley ca. 24 km south of Bolzano\\/Bozen, since the middle of the nineteenth century is demonstrable. Former reports of cultivation\\u000a of Lupinus cosentinii Guss. and L. varius auct., non L. for this purpose in Tyrol

Andrea Heistinger; Klaus Pistrick

2007-01-01

73

The Poor Survival among Pulmonary Tuberculosis Patients in Chiapas, Mexico: The Case of Los Altos Region.  

PubMed

Objective. To analyse survival in patients with pulmonary tuberculosis (PTB) and factors associated with such survival. Design. Study of a cohort of patients aged over 14 years diagnosed with PTB from January 1, 1998 to July 31, 2005. During 2004-2006 a home visit was made to each patient and, during 2008-2009, they were visited again. During these visits a follow-up interview was administered; when the patient had died, a verbal autopsy was conducted with family members. Statistical analysis consisted of survival tests, Kaplan-Meier log-rank test and Cox regression. Results. Of 305 studied patients, 68 had died due to PTB by the time of the first evaluation, 237 were followed-up for a second evaluation, and 10 of them had died of PTB. According to the Cox regression, age (over 45 years) and treatment duration (under six months) were associated with a poorer survival. When treatment duration was excluded, the association between poorer survival with age persisted, whereas with having been treated via DOTS strategy, was barely significant. Conclusions. In the studied area it is necessary that patients receive a complete treatment scheme, and to give priority to patients aged over 45 years. PMID:22701170

Nájera-Ortiz, J C; Sánchez-Pérez, H J; Ochoa-Díaz-López, H; Leal-Fernández, G; Navarro-Giné, A

2012-05-30

74

Numerical analysis of hydrogeochemical data: a case study (Alto Guadalentin, southeast Spain)  

Microsoft Academic Search

This study examines the spatial variability of the factors obtained from the application of correspondence analysis to a hydrogeochemical data set. The goal was to synthesize the hydrogeochemical information using this multivariate statistical technique, by setting a series of factors which clarified the main properties of one aquifer. Then, a geostatistical framework to obtain a probabilistic assessment of groundwater quality

Juan Carlos Ceron; Rosario Jimenez-Espinosa; Antonio Pulido-Bosch

75

Numerical analysis of hydrogeochemical data: a case study (Alto Guadalent??n, southeast Spain)  

Microsoft Academic Search

This study examines the spatial variability of the factors obtained from the application of correspondence analysis to a hydrogeochemical data set. The goal was to synthesize the hydrogeochemical information using this multivariate statistical technique, by setting a series of factors which clarified the main properties of one aquifer. Then, a geostatistical framework to obtain a probabilistic assessment of groundwater quality

Juan Carlos Cerón; Rosario Jiménez-Espinosa; Antonio Pulido-Bosch

2000-01-01

76

ENEL'S (Italian Electricity Board) Hydrological/Meteorological Information Network in Alto Piave Basin, Italy.  

National Technical Information Service (NTIS)

A performance assessment was made of the Italian Electricity Board's (ENEL) hydrological and meteorological information network which makes use of computerized control and data base management systems for meteorological and basin runoff monitoring and for...

M. Tomasino P. Stojkovic

1986-01-01

77

Stop Disease: Diapering Procedures = Alto a las Enfermedades: Procedimientos para Cambiar Panales.  

ERIC Educational Resources Information Center

|In order to prevent the occurrence and spread of disease in California child care programs, this set of laminated procedure pages, in English and Spanish versions, details infant and child care procedures for safe diapering. The document delineates important rules about diapering, gives directions for making a disinfecting solution, and provides…

California Child Care Health Program, Oakland.

78

Dermatological remedies in the traditional pharmacopoeia of Vulture-Alto Bradano, inland southern Italy  

Microsoft Academic Search

BACKGROUND: Dermatological remedies make up at least one-third of the traditional pharmacopoeia in southern Italy. The identification of folk remedies for the skin is important both for the preservation of traditional medical knowledge and in the search for novel antimicrobial agents in the treatment of skin and soft tissue infection (SSTI). Our goal is to document traditional remedies from botanical,

Cassandra L Quave; Andrea Pieroni; Bradley C Bennett

2008-01-01

79

Geology of the Palo Alto 30 x 60 minute quadrangle, California: a digital database  

USGS Publications Warehouse

This map database represents the integration of previously published and unpublished maps by several workers (see Sources of Data index map on Sheet 2 and the corresponding table below) and new geologic mapping and field checking by the authors with the previously published geologic map of San Mateo County (Brabb and Pampeyan, 1983) and Santa Cruz County (Brabb, 1989, Brabb and others, 1997), and various sources in a small part of Santa Clara County. These new data are released in digital form to provide an opportunity for regional planners, local, state, and federal agencies, teachers, consultants, and others interested in geologic data to have the new data long before a traditional paper map is published. The new data include a new depiction of Quaternary units in the San Francisco Bay plain emphasizing depositional environment, important new observations between the San Andreas and Pilarcitos faults, and a new interpretation of structural and stratigraphic relationships of rock packages (Assemblages).

Brabb, Earl E.; Graymer, R. W.; Jones, David Lawrence

1998-01-01

80

Solar-heated hot water instrumentation project for EPRI headquarters complex, Palo Alto, California  

NASA Astrophysics Data System (ADS)

A data acquisition and analysis effort charted the performance of a solar assisted, hot water preheat system supplying a portion of the service water needs. Detailed load and performance data for the system are presented, the merits of the data acquisition system employed are discussed, and recommendations for future monitoring efforts are provided.

Whitehouse, H. T.; Ortiz, P.

1981-01-01

81

Diabetes e transtornos alimentares: Diabetes e transtornos alimentares: Diabetes e transtornos alimentares: Diabetes e transtornos alimentares: Diabetes e transtornos alimentares: uma associação de alto risco uma associação de alto risco uma associação de alto risco uma associação de alto risco uma associação de alto risco Diabetes and eating disorders: a high Diabetes and eating disorders: a high Diabetes and eating disorders: a high Diabetes and eating disorders: a high Diabetes and eating disorders: a high  

Microsoft Academic Search

O diabetes mellitus (DM) é uma doença crônica que cursa com várias complicações clínicas e está entre as maiores causas de morbidade e mortalidade no Brasil. A presença de comorbidades psiquiátricas, principalmente depressão e transtornos alimentares (TA), no paciente diabético, pode interferir no controle metabólico e aumen- tar as complicações da doença. Entre os vários fatores na associação entre o

Alexandre Pinto de Azevedo; Marcelo Papelbaum; Fernanda D'Elia

82

QUALIDADE DA ÁGUA DO RIBEIRÃO LA VRINHA NA REGIÃO ALTO RIO GRANDE - MG , BRASIL 1 Water quality on Lavrinha Stream in Alto Rio Grande region, Minas Gerais State, Brazil  

Microsoft Academic Search

The main purpose of this work was to study the surface water quality behavior, continuously throughout the time, at the headwater watershed of the Grande River, MG. The watershed drains into Grande River area of 687 ha and is enclosed by the Mantiqueira Mountains. The samples were collected at six points in Lavrinha Stream, main tributary of the watershed, from

Daniel Brasil Ferreira Pinto; Antônio Marciano da Silva; Carlos Rogério de Mello; Gilberto Coelho

83

CARACTERIZACION DE UN RESIDUO CON ALTO CONTENIDO DE ALUMINIO CHARACTERIZATION OF A RESIDUE WITH HIGH ALUMINUM CONTENT  

Microsoft Academic Search

A residue from the chemical washing process of aluminum was characterized by different techniques in order to envisage different re-utilization schemes. The residue was composed mainly by gibbsite and boehmite in lower amounts. The chemical analyses reported 32.65 % aluminum and sodium and magnesium as impurities (0.38 and 0.17 % respectively). The powder grain size was around 10 µm. Changes

R. Contreras-Bustos; J. R. Rosas-Cedillo; A. J. Ruiz-García

84

Cottageville (Mount Alto) gas field, Jackson County, West Virginia: a case study of Devonian shale gas production  

Microsoft Academic Search

Exploration and development of upper Devonian organic shales in the Cottageville gas field of western West Virginia began in the late 1920s. Continued development has led to the drilling of over 110 shale wells with accumulative production of more than 10 billion cubic feet of natural gas. Data indicate primary production from zones of organic shales in the lower part

Nuckols

1981-01-01

85

Cottageville (Mount Alto) gas field, Jackson County, West Virginia: a case study of Devonian shale-gas production  

Microsoft Academic Search

Exploration and development of Middle and Upper Devonian organic shales in the Cottageville gas field of western West Virginia began in the late 1920s. Continued development has lead to the drilling of over 110 shale wells with accumulative production of more than 10 billion cubic feet of natural gas. Data indicate primary production from zones of organic shales in the

Nuckols

1979-01-01

86

OCUPACIONES HUMANAS TARDÍAS EN LA TRANSICIÓN BOSQUE ESTEPA: LA LOCALIDAD DE WINCHESTER (CURSO ALTO DEL RÍO CISNES, REGIÓN DE AISÉN)  

Microsoft Academic Search

** Y VALENTINA TREJO V. ABSTRACT We present new information regarding the final moments of steppe hunter-gatherers' occupation of Cisnes River basin. Results are new findings in the forest\\/steppe transition, particularly Winchester 1 site (CIS 074). We comment its importance and similarity to other steppe extra Andean records, like Appeleg 1 site (CIS 009). Finally, we discuss its chronology in

CÉSAR MÉNDEZ M; HÉCTOR VELÁSQUEZ M; VALENTINA TREJO V

2007-01-01

87

RESISTENCIA A LA CORROSIÓN DE ACEROS INOXIDABLES AUSTENITICOS CON ALTO CONTENIDO DE NITROGENO RECUBIERTOS CON HIDROXIAPATITA POR ASPERSIÓN POR PLASMA  

Microsoft Academic Search

In this study was evaluated the corrosion resistance of nitrogen austenitic stainless steel, ASTM-F1586 and Böhler-P558, plasma-sprayed hydroxyapatite coating. The layers were characterized by SEM and DRX. The corrosion resistance was evaluated using tests of potential open circuit and cyclical polarization in Ringer solution to 37°C. The layers present lamelar morphology and pores. In the electrochemical tests was observed that

CLAUDIA PATRICIA OSSA; ANDRÉ TSCHIPTSCHIN

88

Psicoterapia de Grupo para Mujeres con Embarazo de Alto Riesgo Group Psychotherapy for Women with High-Risk Pregnancies  

Microsoft Academic Search

The aim of this work is to present a proposal for a psychotherapeutic intervention with women with high-risk pregnancies that are attending a reproductive health facility from Mexico City. Because it was carried out within a health institution, this is a model of brief intervention, focused, and based on the integrative ap- proach to psychotherapy. It describes the main features

María Eugenia; Gómez López; Evangelina Aldana; Calva Guillermo; González Campillo; Mota González; Marco Antonio; Sánchez Pichardo

89

CRESCIMENTO DA MAMONEIRA EM SOLO COM ALTO TEOR DE ALUMÍNIO NA PRESENÇA E AUSÊNCIA DE MATÉRIA ORGÂNICA  

Microsoft Academic Search

Castor bean is a plant sensible to toxic aluminum presence on acidy soils and this is among the reasons for low yield in some crops. Organic matter sharply raises this plant growth due to nutrients supply and by improving physics soil characteristics among other effects. A trial was run in greenhouse in order to evaluate the effect of aluminum addition

ROSIANE DE LOURDES SILVA DE LIMA; LIV SOARES SEVERINO; MARIA ISABEL LIMA DA SILVA; ROBSON CÉSAR ALBUQUERQUE; MACÊDO BELTRÃO

2007-01-01

90

Maternal Hemoglobin Concentration and Pregnancy Outcome: A Study of the Effects of Elevation in El Alto, Bolivia  

PubMed Central

Iron-deficiency anemia is often under-diagnosed in developing countries, specifically in pregnant populations in regions of high altitude. Hemoglobin levels are not consistently adjusted for elevation, and therefore many anemic patients are left undiagnosed. The purpose of this study was to incorporate current parameters for diagnosing anemia in pregnancy at high altitudes, and to evaluate the effects of appropriately adjusted hemoglobin concentrations on pregnancy outcome. A few studies have examined the effect of elevation on hemoglobin status, and other studies have considered the effects of anemia of pregnancy; however, there is a lack of data demonstrating that altitude-adjusted hemoglobin levels accurately predict pregnancy outcome. Using the Student t-Test, multiple linear regression, and ANOVA statistical analyses, various factors of pregnancy outcome were compared between anemic and non-anemic groups, as defined by hemoglobin cut-off levels adjusted for trimester of pregnancy and altitude. When appropriate adjustments were used, maternal anemia was associated with lower infant Apgar scores at both one minute and five minutes after birth, as well as complication of labor, lower gestational age at birth, and higher parity. This study demonstrates the importance of altitude and trimester specific adjustments to maternal hemoglobin levels in order to accurately diagnose anemia in pregnancy. In addition, a clear correlation is seen between maternal hemoglobin level and pregnancy outcome.

Laflamme, Elise M.

2011-01-01

91

Monitor de Disco de Alto Desempenho Para Aplicacoes Em Tempo Real (High Performance Disk Monitor Applications in Real Time).  

National Technical Information Service (NTIS)

The theoretical concepts involved in the design and implementation of a High Performance Disk Monitor Program are presented. An implementation proposal detailing the relevant aspects required to obtain high performance, simplicity, and portability is also...

M. MacEdodefaria

1987-01-01

92

AIAA Applied Aerodynamics Conference, 10th, Palo Alto, CA, June 22-24, 1992, Technical Papers. Pts. 1 AND 2  

SciTech Connect

Consideration is given to vortex physics and aerodynamics; supersonic/hypersonic aerodynamics; STOL/VSTOL/rotors; missile and reentry vehicle aerodynamics; CFD as applied to aircraft; unsteady aerodynamics; supersonic/hypersonic aerodynamics; low-speed/high-lift aerodynamics; airfoil/wing aerodynamics; measurement techniques; CFD-solvers/unstructured grid; airfoil/drag prediction; high angle-of-attack aerodynamics; and CFD grid methods. Particular attention is given to transonic-numerical investigation into high-angle-of-attack leading-edge vortex flow, prediction of rotor unsteady airloads using vortex filament theory, rapid synthesis for evaluating the missile maneuverability parameters, transonic calculations of wing/bodies with deflected control surfaces; the static and dynamic flow field development about a porous suction surface wing; the aircraft spoiler effects under wind shear; multipoint inverse design of an infinite cascade of airfoils, turbulence modeling for impinging jet flows; numerical investigation of tail buffet on the F-18 aircraft; the surface grid generation in a parameter space; and the flip flop nozzle extended to supersonic flows.

Not Available

1992-01-01

93

77 FR 58203 - AER Energy Resources, Inc.; Alto Group Holdings, Inc.; Bizrocket.Com Inc.; Fox Petroleum, Inc...  

Federal Register 2010, 2011, 2012, 2013

...International, Inc.; Mike The Pike Productions Inc.; Mobile Star Corp.; SavWatt USA Inc.; Scorpex Inc.; Silver Dragon Resources...operations and the accuracy of its financial statements. 9. Mobile Star Corp. is a Delaware corporation based in California....

2012-09-19

94

Surto de peste bubônica na localidade de Jacocha, Huancabamba, Perú Outbreak of bubonic plague in -Jacocha, Huancabamba, Perú  

Microsoft Academic Search

Climatic alterations arising in the north of Perú as a result of the El Niño phenomenon (ENSO) have caused variations in the crop volume, changes in the direction of rivers and probably an increase in the rodent population. In February 1999, in a native community in Jacocha, Huancabamba, Piura's mountains, Perú, an outbreak of bubonic plague appeared with five human

Victor Alva Dávalos; Marco Arrieta Torres; Carlos Olguín Mauricci; Victor Alberto Laguna-Torres; Mónica Pun Chinarro

95

Genetic lineages in the yellow fever mosquito Aedes (Stegomyia) aegypti (Diptera: Culicidae) from Peru.  

PubMed

The yellow fever mosquito Aedes aegypti was introduced in Peru in 1852 and was considered to be eradicated in 1958. In 2001, Ae. aegypti had been recorded in 15 out of 24 Peruvian Departments. Peru has great ecological differences between the east and west sides of Andes. Because of this, we consider that Ae. aegypti populations of both east and west sides can have a genetically distinct population structure. In this study we examined genetic variability and genealogical relationships among three Ae. aegypti Peruvian populations: Lima, Piura (west Andes), and Iquitos (east Andes) using a fragment of the ND4 gene of the mitochondrial genome. Three haplotypes were detected among 55 samples. Lima and Iquitos showed the same haplotype (Haplotype I), whereas Piura has two haplotypes (Haplotype II and III). Haplotype II is four mutational steps apart from Haplotype I, while Haplotype III is 13 mutational steps apart from Haplotype I in the network. The analysis of molecular variation showed that mostly of the detected genetic variation occurs at interpopulational level. The significant value Phi(st) suggests that Piura population is structured in relation to Lima and Iquitos populations and the gene flow of the ND4 is restricted in Piura when compared to Lima and Iquitos. Genetic relationship between haplotype I and haplotype II suggests introduction of the same mtDNA lineage into those localities. However the existence of a genetically distant haplotype III also suggests introduction of at least two Ae. aegypti lineages in Peru. PMID:16302064

da Costa-da-Silva, André Luis; Capurro, Margareth Lara; Bracco, José Eduardo

2005-11-08

96

International Study on Artemia LVIII. Morphologic differentiation and reproductive isolation of Artemia populations from South America  

Microsoft Academic Search

Six Artemia populations from coastal and inland sites in Chile, ranging from 20 to 50 degrees latitude south, were compared morphologically. The study included reference samples of A. franciscana (San Francisco Bay, California-USA) and A. persimilis (Buenos Aires, Argentina). These species are likely to be found in Chile. Samples from Peru (Piura) and Brazil (Macau, Rio Grande do Norte) are

Gonzalo Gajardo; Nelson Colihueque; Margarita Parraguez; Patrick Sorgeloos

1998-01-01

97

Superficies Seletivas de Alto Desempenho E Baixo Custo Para Coletores Solares (Selective Surfaces of High Performance and Low Cost Solar Collectors).  

National Technical Information Service (NTIS)

The deposition of a thin layer of copper oxide II on a copper metal substrate using alkaline solutions of sodium chlorite is one of the most common methods of preparing selective surfaces for solar collectors. Parameters of the process are the substrate c...

J. Anhalt M. A. Ferreira W. Gill

1986-01-01

98

Conversion de un nucleo de alto a bajo enriquecimiento. Calculo sismico de la grilla. (High enrichment to low enrichment core's conversion. Grid seismic calculation).  

National Technical Information Service (NTIS)

The grid of a reactor under severe seismic conditions was structurally verified, considering that it must have been maintained without failure. Values obtained from tensions and displacements are under the admissible ones, the existing grid responds to th...

J. E. Magoia G. D. Benito

1990-01-01

99

Health assessment for Rhone Poulenc (ZOECON), East Palo Alto, San Mateo County, California, Region 9. CERCLIS No. CAT000611350. Final report  

SciTech Connect

The Rhone Poulenc site has been proposed for listing on the National Priorities List. The site has been the location of chemical manufacturing since before 1926. Flue dust from Anaconda, Montana copper-smelting operations was used to manufacture sodium arsenate from 1920s to 1960s. The current owners have manufactured insecticides at the site from 1972 to the present. The environmental contamination on-site consists of arsenic, lead, cadmium, selenium, mercury, copper, and zinc in soil and surface water. The environmental contamination off-site consists of arsenic in surface water in the adjacent tidal marsh; and arsenic, lead, cadmium, selenium, copper, mercury, zinc in seasonally pounded surface water. In addition, soil contamination has been detected on the levy and in the tidal marsh. The site is considered to be of potential public health concern of the risk to human health caused by the possibility of exposure to hazardous substances via contaminated surface soil, sediment, and water.

Not Available

1988-11-29

100

Características agronómicas y químicas importantes en híbridos de maíz para forraje con alto valor energético Important agronomic and chemical characteristics in high energy hybrid forage corns  

Microsoft Academic Search

The objectives of this study were to determine agronomic and chemical characteristics for selecting high energy forage maize, and to generate equations related to forage corn energy value in La Laguna, Mexico. Experiments were carried out in 1997 and 1999. All tests were planted on humid soil and fertilized with 180-80-00 units. Plant density was 80,000 plants per hectare. Eighteen

Eduardo F. Contreras; Rodolfo Faz Contrerasa

101

National Council on Schoolhouse Construction, (43rd Annual Meeting, Palo Alto, California, October 3-6, 1966). Schools-Planned for the Community.  

ERIC Educational Resources Information Center

A compilation of reports given at the forty-third annual meeting of the National Council on Schoolhouse Construction includes--(1) "To Build--Past, Present and Future Tense", a view of school construction perspectives in terms of present and future educational needs, (2) "Implicatio"s of Present and Projected Federal Programs for School…

Widdall, Kenneth R., Ed.

102

Proceedings of the Symposium on the Environmental Consequences of Fire and Fuel Management in Mediterranean Ecosystems Held at Palo Alto, California on August 1-5, 1977.  

National Technical Information Service (NTIS)

The report contains 60 papers from a symposium on the dynamics of fire-type ecosystems of Mediterranean regions and the development and assessement of management policies. The papers cover the following topics: the nature of the world's Mediterranean ecos...

C. E. Conrad H. A. Mooney

1977-01-01

103

Proceedings of a National Conference on Productivity and Effectiveness in Educational Research and Development (Palo Alto, California, December 6-7, 1977).  

ERIC Educational Resources Information Center

|Twelve papers are contained in this report. Robert M. Ranftl reports on the findings of a study to identify useful techniques for optimizing productivity. John S. Packard contrasts the spirit of inquiry and the norm of productivity, and makes recommendations for the composition of a research team. David L. Williams describes procedures to ensure…

Research for Better Schools, Inc., Philadelphia, PA.

104

Recent Stirrings: A Note on the Seminar on Latin American Studies, Center for Advanced Study in the Behavioral Sciences, Palo Alto, Summer 1963  

Microsoft Academic Search

Mr. Heussler, a staff member of the International Training and Research Program of the Ford Foundation, reports on an interdisciplinary seminar which investigated the work accomplished in Latin American Studies, possibilities for future research, and questions of method and methodology of social research in the Latin American context.

Robert Heussler

1964-01-01

105

INFRAGILIMENTO DA IDROGENO IN BOMBOLE IN ACCIAIO PER TRASPORTO GAS: STATO DELL'ARTE SULLE ATTUALI NORMATIVE E PRINCIPALI PROBLEMATICHE DI PROGETTAZIONE PER ACCIAI ALTO-RESISTENZIALI  

Microsoft Academic Search

Sommario L'impiego dell'idrogeno come veicolo di energia eco-compatibile per un'economia totalmente sostenibile richiede notevoli sforzi e sfide in settori che coinvolgono tutto il ciclo di vita dell'idrogeno, dalla produzione fino all'utilizzo finale. Particolari sforzi sono necessari nel campo dello stoccaggio, in quanto l'immagazzinamento di idrogeno gassoso necessita di pressioni molto più elevate di quelle tradizionalmente ed attualmente in uso con

M. Bellingardi; P. Bortot

106

Variation of Indoor Radon Levels in Some Caves of Parque Estadual Turistico do Alto Ribeira (PETAR), SP, Brazil with Ventilation and Rain  

SciTech Connect

In order to assess the radon exposure for the tour guide workers, radon levels in several galleries of the most visited caves of PETAR (High Ribeira River Turistic State Park), were determined by using Makrofol E tracks detectors. A two-years surveillance, from 2003 to 2005, showed radon average levels varying from 153{+-}44 Bq{center_dot}m{sup -3} to 6358{+-}1619 Bq{center_dot}m{sup -3}. Those results showed that the wide variation between the minimum and maximum concentrations values are strongly related with cave ventilation. In order to establish other factors contributing to this variation, beside the well known temperature effect, rain data over the entire period were also considered, showing that, apparently, radon concentrations inside the caves rise with drought.

Alberigi, Simone; Pecequilo, Brigitte Roxana Soreanu [Institutu de Pesquisas Energetical e Nucleares (IPEN/CNEN-SP) Av. Professor Lineu Prestes 2242 05508-000 Sao Paulo, SP (Brazil)

2008-08-07

107

LAS SOCIEDADES ESTATALES DE LA EDAD DEL BRONCE EN EL ALTO GUADALQUIVIR (PROYECTO PEÑALOSA. 2ª FASE). V CAMPAÑA DE EXCAVACIONES (2001)  

Microsoft Academic Search

First, we show the second phase of Peñalosa Project, including its general and specific aims. Secondly we offer the results from the fifth excavation campaign in the Bronze Age site of Peñalosa. Basically we pretended to get results about its urbanism and its chronological frame.

Francisco CONTRERAS CORTÉS; Juan Antonio; CÁMARA SERRANO; Auxilio MORENO ONORATO; Gonzalo ARANDA JIMÉNEZ

108

Materiales compuestos de matriz met´ alica rica en Zn con alto contenido de Al y componente estructural de ZnO  

Microsoft Academic Search

22 %wt Al alloy, and powders quantities of ZnO that were 0.0 %, 0.01 %, 0.1 %, 1 % y 10 % of the total weight of each mix. The mixes were after compacted with a load of 16 tons and acetone as lubricant. The sintering was made in steps of 15 minutes of duration at 357-C. Be- fore each

J. A. Arag; J. R. Mirandab

109

International study on Artemia LVIII. Morphologic differentiation and reproductive isolation of Artemia populations from South America  

Microsoft Academic Search

SixArtemia populations from coastal and inland sites in Chile, ranging from 20 to 50 degrees latitude south, were compared morphologically.\\u000a The study included reference samples ofA. franciscana (San Francisco Bay, California-USA) andA. persimilis (Buenos Aires, Argentina). These species are likely to be found in Chile. Samples from Peru (Piura) and Brazil (Macau, Rio\\u000a Grande do Norte) are two known examples

Gonzalo Gajardo; Nelson Colihueque; Margarita Parraguez; Patrick Sorgeloos

1998-01-01

110

Health Hazard Evaluation Report: HETA 98-0217-2772, Puerto Rico Aqueduct and Sewer Authority Sergio Cuevas Bustamante Filtration Plant Frujillo Alto, Puerto Rico (Planta de Filtraccion Sergio Cuevas Bustamante Autoridad de Acueducto y Alcantarillados de Puerto Rico Frujillo Alto, Puerto Rico.)  

National Technical Information Service (NTIS)

On May 6, 1998, the National Institute for Occupational Safety and Health (NIOSH) received a confidential employee request for a Health Hazard Evaluation (HHE) at the Sergio Cuevas Bustamante Filtration Plant of the Puerto Rico Aqueduct and Sewer Authorit...

L. M. Ewers A. Lopez C. Rodriguez

2002-01-01

111

Professional Preparation in Athletic Training. Proceedings of the Professional Preparation Conferences: National Athletic Trainers Association (Nashville, Tennessee, January 7-9, 1979 and January 4-6, 1980) and (Palo Alto, California, February 15-17, 1980).  

ERIC Educational Resources Information Center

|Presented in this publication are papers given at three conferences coordinated and conducted by the National Association of Athletic Trainers Professional Education Committee. The authors are nationally known athletic trainers, physicians, and other sports medicine professionals. The papers are grouped into four major categories representing…

Bell, Gerald W., Ed.; And Others

112

Idades Th-U-PbT de Monazita e Geotermobarometria de Rochas Metapelíticas de Alto Grau do Sistema Orogênico Itabuna-Salvador-Curaçá, BA, Brasil: um Estudo em Microssonda Eletrônica  

Microsoft Academic Search

Electron microprobe Th-U-PbT dating of monazite was performed on aluminous gneiss samples from the northern Jacurici and southern Ilhéus areas of the Itabuna-Salvador-Curaçá Orogenic System. Studied samples are spinel-sillimanite-cordierite- garnet gneiss and corundum-spinel-sillimanite-garnet gneiss that equilibrated during a high temperature metamorphism at T-P conditions of about 835°C\\/6.9 kbar and 890°C\\/7.4 kbar, respectively. Microprobe ages of monazite in equilibrium with these

Silvio Roberto; Farias Vlach; Eliane Aparecida Del Lama

113

CSH JUSTICE AND RIGHTS: ONGOING CHALLENGES THE STRUGGLE FOR A COMPREHENSIVE JUSTICE SYSTEM: VIEWS ON VIOLENCE, CONFLICT RESOLUTION, AND RECONCILIATION IN ALTO PERENE (JUNIN, PERU) AFTER INTERNAL ARMED CONFLICT  

Microsoft Academic Search

SUMMARY Discourses concerning truth, justice and reconciliation held by the Ashaninka living in the Perene Valley (Central Amazon of Peru) are contingent upon their right to conserve their territory and to protect the rain-forests, a right severely threatened, equally by the State and by land invaders coming from the Coast and the Andean region. Thus, it seems that these events

ELISABETH ACHA

114

Concurrent Semantics for the ?-calculus 1 1 Work supported in part by Esprit Basic Research project CONFER and working group COMPUGRAPH II and by Progetto Speciale CNR “Specifica ad Alto Livelloe Verifica Formale di Sistemi Digitali”  

Microsoft Academic Search

In this paper we give both operational and abstract concurrent semantics for the ?-calculus (a process algebra with the ability of handling channels as messages [23]) and discuss their consistency. For the operational semantics [15,6];, for the abstract semantics we introduce interleaving, partial ordering and mixed ordering observations, define the corresponding bisimulation relations and discuss them.

Ugo Montanari; Marco Pistore

1995-01-01

115

Desarrollo y validación del método de cromatografía líquida de alto rendimiento para la cuantificación de oxitocina en formulación inyectable Development and validation of high performance liquid chromatography method for quantification of oxytocin in injectable formulation  

Microsoft Academic Search

ABSTRACT ABSTRACT ABSTRACT ABSTRACT High performance liquid chromatographic method (HPLC) has been developed for Oxytocin Injection, High performance liquid chromatographic method (HPLC) has been developed for Oxytocin Injection, High performance liquid chromatographic method (HPLC) has been developed for Oxytocin Injection, High performance liquid chromatographic method (HPLC) has been developed for Oxytocin Injection, High performance liquid chromatographic method (HPLC) has been

PATIL JT; JAIN RS; SHAH RR

116

«Amigos con derecho a roce»: una oportunidad para contraer la infección por el virus de la inmunodeficiencia humana en hombres homo\\/bixesuales con prácticas sexuales de alto riesgo  

Microsoft Academic Search

ObjectiveDespite prevention efforts, the prevalence of unprotected anal intercourse (UAI) remains substantial among men who have sex with men (MSM). This study describes and analyzes how a group of MSM manages sexual risk with sexual partners.

Percy Fernández-Dávila

2007-01-01

117

HABILIDADES SOCIAIS E PROBLEMAS DE COMPORTAMENTO DE ALUNOS COM DEFICIÊNCIA MENTAL, ALTO E BAIXO DESEMPENHO ACADÊMICO1 SOCIAL SKILLS AND BEHAVIOR PROBLEMS IN STUDENTS WITH MENTAL RETARDATION, HIGH AND LOW ACADEMIC PERFORMANCE  

Microsoft Academic Search

RESUMO: as habilidades sociais vêm sendo amplamente reconhecidas como importante componente do processo de escolarização especialmente dos alunos com deficiência mental. A revisão da literatura evidencia escassez de pesquisas que focalizam a inclusão desses alunos no sistema regular de ensino. Considerando tal situação, este estudo teve como objetivos: avaliar e comparar o desempenho social (habilidades sociais e problemas de comportamento)

Andréa Regina Rosin-PINOLA; Zilda Aparecida; Pereira DEL PRETTE; Almir DEL PRETTE

118

Chemical composition and physicochemical properties of shiitake mushroom and high fiber products Composición química y propiedades físico-químicas del hongo shiitake y de productos con alto contenido de fibra  

Microsoft Academic Search

Increasing dietary fiber (DF) intake may help to decrease risk of chronic diseases such as diabetes, cardiovascular disease and colon cancer. The objective of this work was to study and compare the chemical composition and physicochemical properties of some products used as DF sources. The DF source products evaluated were Metamucil, Kania, Tarasca, Nopalinaza, Xotzil and dried shiitake mushroom (Lentinus

H. E. Martínez-Flores; D. C. Maya-Cortés; J. D. Figueroa-Cárdenas; M. G. Garnica-Romo; J. Ponce-Saavedra

2009-01-01

119

PERFIL ANTROPOMÉTRICO DE ATLETAS DE FUTSAL FEMININO DE ALTO NÍVEL COMPETITIVO CONFORME A FUNÇÃO TÁTICA DESEMPENHADA NO JOGO ANTHROPOMETRIC PROFILE OF ELITE ATHLETES OF WOMEN'S FUTSAL ACCORDING TO TACTICAL FUNCTION IN THE GAME  

Microsoft Academic Search

The objective of the present study was to determinate the somatotype profile of professional players of futsal by their tactical function. The sample was composed by 112 futsal players from ten teams from seven states that were disputing the 10th Brazilian Cup of Teams. The variables of body mass, stature, skinfold thickness, body perimeters and bone diameters were collected with

Marcos Roberto Queiroga; Sandra Aires Ferreira; Marcelo Romanzini

2005-01-01

120

Sell or not to sell - a pastoralist's dilemma: a lesson from the slaughterhouse  

SciTech Connect

Marketing strategies employed by herders in Piura, a coastal region in northern Peru, are discussed in conjunction with ecological and economic factors. Data from regional slaughterhouses' help in analyzing decisions concerning livestock offtakes and in understanding the rationale behind them. Piura is characterized by sharp weather changes, amplified by the El Nino phenomenon. The variations in precipitation and forage availability strongly affect production, structure, and dynamics of the herds and are therefore a significant component in determining the actual marketing decision strategy. Pure herders adopt an insurance strategy emphasizing a build-up of herds during abundant years in order to compensate for considerable losses caused by frequent droughts. The use of stubble and concentrated feed in coping with droughts is restricted by economic and social factors. Agropastoralists are affected not only by ecological factors but also by labor availability, agricultural cash requirements, and household needs. As a result, these goat keepers practice a capital-manipulation strategy in which goats and kids are used as a form of capital. The paper provides an empirical representation of these two marketing strategies based on slaughterhouses' records and a complementary field survey.

Perevolotsky, A.

1986-09-01

121

Notes on human cases of cystic echinococcosis in Peru.  

PubMed

Cystic echinococcosis (CE) is a high prevalent zoonosis in the central and southern Peruvian Andes. Serum samples (n50)from patients presenting presumptive clinical and radiological diagnosis of CE (group 1), were tested for antibodies against Echinococcus granulosus metacestode using Arc-5 double diffusion assay (DD5), immunoelectrophoresis (IEF), and immunoelectrotransfer blot (EITB) techniques. Serum samples (n18) from patients presenting other parasite infections (paragonomiasis, cysticercosis, and fascioliasis) or healthy blood donors (n15), were designated as control groups. The overall sensitivity of the tests was of 94% (DD5 and IEF tests) or 96% (EITB test). Only patients from group 1 were seropositive for CE. Polypeptides of 21, 31, and 48 kDa were considered positive for CE. Based on these results, this study demonstrates that CE also occurs in other coastal departments (Piura, Ancash, Ica, Arequipa, and Tacna) besides Lima. PMID:16862333

Romani, Elizabeth Luz Sanchez; Rodrigues-Silva, Rosângela; Maldonado, Arnaldo; Machado-Silva, José Roberto; Gomes, Delir Corrêa

2006-05-01

122

[Outbreak of bubonic plague in Jacocha, Huancabamba, Perú ].  

PubMed

Climatic alterations arising in the north of Perú as a result of the El Niño phenomenon (ENSO) have caused variations in the crop volume, changes in the direction of rivers and probably an increase in the rodent population. In February 1999, in a native community in Jacocha, Huancabamba, Piura's mountains, Perú, an outbreak of bubonic plague appeared with five human cases, one of which lead to death. The diagnosis was confirmed by serology (passive hemaglutination). The presence of antibodies in dogs of localities close to Jacocha has confirmed the circulation of Yersinia pestis in the region. The outbreak was controlled by the local sanitary authorities' prompt action. This episode, after an epidemiological silence for more than four years, showed the necessity of intensifying the plague epidemiological surveillance system in this area. PMID:11340502

Dávalos, V A; Torres, M A; Mauricci, C O; Laguna-Torres, V A; Chinarro, M P

123

Consultant - media research, design, and evaluation, Palo Alto, CA and Santa Barbara, CA, 1981-present. Work with producers to research and develop interactive media and technologies. Conduct user testing and research; provide design recommendations for the content, interface, interaction design, user experience, and educational effectiveness of interactive products for children, adolescents, and adults  

Microsoft Academic Search

Was responsible for the research, design, educational quality, and effectiveness of Nintendo video games for health promotion. Developed the games' instructional design based on theory and research in the social sciences, health communication, instructional technology, and human-computer interaction. Wrote successful grant proposals to healthcare providers, foundations, and the National Institutes of Health and served as principal investigator for nationwide clinical

Zowie Intertainment

124

COMUNICAÇÃO SELEÇÃO P ARA ALTO TEOR DE ACILAÇÚCARES EM GENÓTIPOS DE TOMATEIRO E SUA RELAÇÃO COM A RESISTÊNCIA AO ÁCARO VERMELHO (Tetranychus evansi) E À TRAÇA (Tuta absoluta) Selection towards high acylsugar levels in tomato genotypes and its relationship with resistance to spider mite (Tetranychus evansi) and to the South American pinworm (Tuta absoluta)  

Microsoft Academic Search

Selection for high foliar levels of allelochemicals has been proposed as a suitable strategy for breeding tomatoes for arthropod pest resistance. In the Lycopersicon pennellii (Correll) D Arcy accession LA-716, acylsugars exsudated by type IV glandular trichomes present in all aerial parts of the plant reportedly mediate resistance to arthropod pests. This paper intended to study the levels of resistance

Guilherme Victor; Nippes Pereira; Wilson Roberto Maluf; Luciano Donizete Gonçalves; Luís Antônio; Augusto Gomes; Vicente Licursi

125

75 FR 15447 - Iowa; Amendment No. 1 to Notice of a Major Disaster Declaration  

Federal Register 2010, 2011, 2012, 2013

...the President in his declaration of February 25, 2010. Buena Vista, Dickinson, O'Brien, Palo Alto, Plymouth, and Pocahontas Counties for Public Assistance. Buena Vista, Dickinson, O'Brien, Palo Alto, and Plymouth Counties for emergency...

2010-03-29

126

40 CFR 81.355 - Puerto Rico.  

Code of Federal Regulations, 2013 CFR

...County Trujilla Alto Municipio Utuado Municipio Vega Alta Municipio Vega Baja Municipio Vieques Municipio Villalba Municipio...County Trujillo Alto Municipio Utuado Municipio Vega Alta Municipio Vega Baja Municipio Vieques...

2013-07-01

127

Cutaneous leishmaniasis in the Peruvian Andes: an epidemiological study of infection and immunity.  

PubMed Central

A prospective longitudinal survey of cutaneous leishmaniasis (Leishmania peruviana) was carried out in Peru on a study population of 4716 persons living in 38 villages (Departments of Lima, Ancash and Piura). Demographic and clinical data were collected from all individuals, and a Montenegro skin test (MST) was carried out on 72% (3418) of the study population. Each household was revisited at 3-monthly intervals for up to 2 years to detect new leishmaniasis cases; 497 people received a second MST at the end of the study. Analysis of the epidemiological data indicated that (i) 17% (16/94) of all infections were subclinical, (ii) this percentage increased significantly with age, (iii) clinical infections led to 73.9% protective immunity (95% C.I. 53.0-85.5%) and relatively permanent MST responsiveness (recovery rate = 0.0098/year; 95% C.I. 0.000-0.020/year), (iv) sub-clinical infections led to protective immunity, which was positively correlated with their MST induration size (increasing by 17.9% per mm; P < 0.0001), and a mean MST recovery rate of 0.114/year (4/421 man-months), and (v) recurrent leishmaniasis was dominated by reactivations, not by reinfections.

Davies, C. R.; Llanos-Cuentas, E. A.; Pyke, S. D.; Dye, C.

1995-01-01

128

Traditional medicinal plant use in Northern Peru: tracking two thousand years of healing culture  

PubMed Central

This paper examines the traditional use of medicinal plants in Northern Peru, with special focus on the Departments of Piura, Lambayeque, La Libertad, Cajamarca, and San Martin. Northern Peru represents the center of the old Central Andean "Health Axis," stretching from Ecuador to Bolivia. The roots of traditional healing practices in this region go at least as far back as the Moche period (AC 100–800). Although about 50% of the plants in use reported in the colonial period have disappeared from the popular pharmacopoeia, the plant knowledge of the population is much more extensive than in other parts of the Andean region. 510 plant species used for medicinal purposes were collected, identified and their vernacular names, traditional uses and applications recorded. The families best represented were Asteraceae with 69 species, Fabaceae (35), Lamiaceae (25), and Solanaceae (21). Euphorbiaceae had twelve species, and Apiaceae and Poaceae 11 species. The highest number of species was used for the treatment of "magical/ritual" ailments (207 species), followed by respiratory disorders (95), problems of the urinary tract (85), infections of female organs (66), liver ailments (61), inflammations (59), stomach problems (51) and rheumatism (45). Most of the plants used (83%) were native to Peru. Fresh plants, often collected wild, were used in two thirds of all cases, and the most common applications included the ingestion of herb decoctions or the application of plant material as poultices.

Bussmann, Rainer W; Sharon, Douglas

2006-01-01

129

77 FR 43123 - Notice of Determinations Regarding Eligibility To Apply for Worker Adjustment Assistance  

Federal Register 2010, 2011, 2012, 2013

...Company, ICT- Atlanta, GA........... June 4, 2011. Infrastructure, Database Administration, Remote Workers Lake Zurich, IL. 81,738...................... Materials CTI, LLC, Palo Alto, CA......... June...

2012-07-23

130

Whole Foods Market Recalls Sour Cherry and Blueberry ...  

Center for Food Safety and Applied Nutrition (CFSAN)

... Monterey; Napa; Noe Valley; Novato. Ocean (San Francisco); Palo Alto; Petaluma; Potrero Hill (San Francisco); Redwood City; ... More results from www.fda.gov/food/recallsoutbreaksemergencies/recalls

131

1985 nuclear power plant safety control technology seminar: proceedings  

Microsoft Academic Search

A seminar on Nuclear Power Plant Safety Control Technology was sponsored by EPRI on February 4-6, 1985 in Palo Alto, California at the Hyatt-Palo Alto. These proceedings include formal presentations on the following topics: Overview of nuclear power plant safety control technology; PWR and BWR signal validation; Safety parameter display systems and advanced operations aids; Core monitoring; Simulator and simulation

S. M. Divakaruni; W. K. H. Sun

1986-01-01

132

Sick Child Care Component in a Day Care Program: An Evaluation of Process and Outcomes.  

National Technical Information Service (NTIS)

The sick child care component of a comprehensive day care program for low-income and moderate-income families with children aged 4 months to 8 years is evaluated. The Palo Alto Community Child Care (PACCC), Palo Alto, California, encompasses several types...

N. W. Pedrick

1975-01-01

133

PYROCLASTIC FLOW MODELING TO RECONSTRUCT A VOLCANIC EDIFICE IN PAIPA (BOYACÁ-COLOMBIA)  

Microsoft Academic Search

Pyroclastic deposits produced by the domes collapse (resurgence of a caldera collapse), at the west of the Honda Grande creek (Paipa, Boyacá-Colombia) were related by INGEOMINAS. These deposits fill the valleys of Olitas, Calderitas and a creek at the south of the Alto de los Volcanes reaching distances near to 3 km from the focus between the Alto de los

Óscar Rodríguez; Milton Obando; Luis Castillo; Héctor Cepeda

134

Transit light curves of WASP-10 b (Maciejewski+, 2011)  

NASA Astrophysics Data System (ADS)

Light curves of four WASP-10 b's transits observed in 2010 are given. Data were collected with the Calar Alto Faint Object Spectrograph (CAFOS) on the 2.2-m telescope at Calar Alto Observatory (Spain). Magnitudes in R band were determined with the aperture photometry method against a comparison star. (4 data files).

Maciejewski, G.; Raetz, S.; Nettelmann, N.; Seeliger, M.; Adam, C.; Nowak, G.; Neuhaeuser, R.

2011-09-01

135

Parental Acceptance of HPV Vaccine in Peru: A Decision Framework  

PubMed Central

Objective and Method Cervical cancer is the third most common cancer affecting women worldwide and it is an important cause of death, especially in developing countries. Cervical cancer is caused by human papillomavirus (HPV) and can be prevented by HPV vaccine. The challenge is to expand vaccine availability to countries where it is most needed. In 2008 Peru’s Ministry of Health implemented a demonstration project involving 5th grade girls in primary schools in the Piura region. We designed and conducted a qualitative study of the decision-making process among parents of girls, and developed a conceptual model describing the process of HPV vaccine acceptance. Results We found a nonlinear HPV decision-making process that evolved over time. Initially, the vaccine’s newness, the requirement of written consent, and provision of information were important. If information was sufficient and provided by credible sources, many parents accepted the vaccine. Later, after obtaining additional information from teachers, health personnel, and other trusted sources, more parents accepted vaccination. An understanding of the issues surrounding the vaccine developed, parents overcome fears and rumors, and engaged in family negotiations–including hearing the girl’s voice in the decision-making process. The concept of prevention (cancer as danger, future health, and trust in vaccines) combined with pragmatic factors (no cost, available at school) and the credibility of the offer (information in the media, recommendation of respected authority figure) were central to motivations that led parents to decide to vaccinate their daughters. A lack of confidence in the health system was the primary inhibitor of vaccine acceptance. Conclusions Health personnel and teachers are credible sources of information and can provide important support to HPV vaccination campaigns.

Bartolini, Rosario M.; Winkler, Jennifer L.; Penny, Mary E.; LaMontagne, D. Scott

2012-01-01

136

Hydrologic model framework for river basins with a range of hydroclimatic and bioclimatic conditions  

NASA Astrophysics Data System (ADS)

This presentation reports on the first steps in the development of a regional scale runoff modelling framework for a river basin that features a wide range of diverse hydroclimatic and landscape conditions across the basin. A new approach will be tested based on an ecohydrologically and water balance oriented landscape classification concept. As starting point the Holdridge life zone system concept will be used which is based on indices of precipitation, evapotranspiration and temperature and differentiates landscapes with respect to climatic and elevation zones. Further steps of the projects will include the search for additional indices that can be used to define the controls on the dominant runoff processes in relations to water balance and landscapes chatacteristics, respectively. The final model framework will be constructed around a group of modules, each of the modules representing specific conditions with respect to the geomorphologic and ecohydrologic characteristics of the particular landscape type. The selected test river basins are located in 2 regions of Peru, the Piura region (24,000 Km2) and the Lambayeque region (10,000 Km2). They feature a wide range of hydroclimatic and landcover situations with diversity of landscapes (from high mountaneous andean areas to flat coastal areas, from forested areas to desert areas, and from permanent to ephemeral lakes). A very particular feature exists in the form of the lake Ramon next to the coast of the sea which exhibits a strong bild-up in the time of ENSO/El Niño episodes, reaching an extent of about 2,000 Km2 in area and around 8,000 million m3 in volume in the ENSO event 1997-98, and a strong redrawal at the end of such an episode.

Cárdenas Gaudry, María.; Gutknecht, Dieter

2010-05-01

137

76 FR 37807 - Notice of Competing Preliminary Permit Applications Accepted for Filing and Soliciting Comments...  

Federal Register 2010, 2011, 2012, 2013

...would be 6.7 GWh. Applicant Contact (Keechelus Hydropower): Mr. Carl Spetzler, CEO, Orenco Hydropower, Inc., 745 Emerson Street, Palo Alto, California 94301; phone: (650) 475-4467. Applicant Contact (Qualified Hydro): Ms. Ramya...

2011-06-28

138

GRAS Notice 000479: Beta-glucanase, cellulase, and ...  

Center for Food Safety and Applied Nutrition (CFSAN)

Text Version... Brussels Chicago Dallas Frankfurt Harrisburg Houston Irvine London Los Angeles Miami Moscow New York Palo Alto Paris Philadelphia Pittsburgh ... More results from www.fda.gov/downloads/food/ingredientspackaginglabeling

139

76 FR 29267 - Notice Pursuant to the National Cooperative Research and Production Act of 1993-Connected Media...  

Federal Register 2010, 2011, 2012, 2013

...antitrust plaintiffs to actual damages under specified circumstances. Specifically, Topspin Media, Inc., San Francisco, CA; Vodafone Group Services Limited, Berkshire, England, UNITED KINGDOM; Motion Picture Laboratories, Inc., Palo Alto, CA;...

2011-05-20

140

El sodio en su dieta: Use la etiqueta de información ...  

Center for Food Safety and Applied Nutrition (CFSAN)

... Los niveles altos de sodio pueden parecer “ocultos” en los alimentos envasados, sobre todo cuando un alimento no “sabe” salado, ¡pero el sodio ... More results from www.fda.gov/food/resourcesforyou/consumers

141

76 FR 71443 - Enhanced-Use Lease (EUL) of Department of Veterans Affairs (VA) Real Property for the Development...  

Federal Register 2010, 2011, 2012, 2013

...AGENCY: Department of Veterans Affairs. ACTION...at the VA Palo Alto Health Care System (Menlo...priority placement for homeless and/or at-risk Veterans and their families...Under Secretary for Health for applying the...

2011-11-17

142

32 CFR Appendix to Part 173 - List of Contractors for Whom Certification Is Required  

Code of Federal Regulations, 2010 CFR

...as to contracts originating in the following divisions or subsidiaries: Norden Systems, Incorporated Pratt & Whitney Varian Associates, Incorporated, 611 Hansen Way, Palo Alto, CA as to contracts originating in the following division: *...

2010-07-01

143

32 CFR Appendix to Part 173 - List of Contractors for Whom Certification Is Required  

Code of Federal Regulations, 2010 CFR

...as to contracts originating in the following divisions or subsidiaries: Norden Systems, Incorporated Pratt & Whitney Varian Associates, Incorporated, 611 Hansen Way, Palo Alto, CA as to contracts originating in the following division: *...

2009-07-01

144

Budget Advisory Committees: Making Sense of Complex Issues.  

ERIC Educational Resources Information Center

Associate superintendents for business services from four California school districts (Los Altos, Vallejo City, San Juan, and Oakland) offer their insights on how to work effectively with budget advisory committees. (Contains 14 references.) (PKP)

Goldring, Leslie

2003-01-01

145

ParcTab Ubiquitous Computing Experiment.  

National Technical Information Service (NTIS)

The PARCTAB system integrates a palm-sized mobile computer into an office network. This project serves as a preliminary testbed for Ubiquitous Computing, a philosophy originating at Xerox Palo Alto Research Center (PARC) that aims to enrich our computing ...

R. Want B. Schilit N. Adams R. Gold K. Petersen D. Goldberg J. Ellis M. Weiser

1995-01-01

146

76 FR 27662 - Notice of Receipt of Complaint; Solicitation of Comments Relating to the Public Interest  

Federal Register 2010, 2011, 2012, 2013

...containing same. The complaint names as respondents Hewlett-Packard Company of Palo Alto, CA; Apple Inc. of Cupertino, CA; Aruba Networks, Inc. of Sunnyvale, CA; Meru Networks of Sunnyvale, CA and Ruckus Wireless of Sunnyvale, CA. The...

2011-05-12

147

Spacecraft Optical Environment.  

National Technical Information Service (NTIS)

This report summarizes the findings of the program entitled Spacecraft Optical Environment. In this program the Lockheed Palo Alto Research Laboratory conducted a research program to investigate the interactions of spacecrafts with low earth orbit environ...

S. B. Mende

1995-01-01

148

75 FR 17178 - Iowa Disaster Number IA-00023  

Federal Register 2010, 2011, 2012, 2013

...Primary Counties: Adams, Boone, Buena Vista, Cherokee, Clay, Dallas Emmet, Greene, Hardin, Ida, Monona, Palo Alto, Pocahontas, Story, Union. All other information in the original declaration remains unchanged. (Catalog of Federal Domestic...

2010-04-05

149

75 FR 18523 - Iowa; Amendment No. 1 to Notice of a Major Disaster Declaration  

Federal Register 2010, 2011, 2012, 2013

...March 2, 2010. Adams, Boone, Buena Vista, Cherokee, Clay, Dallas, Emmet, Greene, Hardin, Ida, Monona, Palo Alto, Pocahontas, Story, and Union Counties for Public Assistance. The following Catalog of Federal Domestic Assistance Numbers...

2010-04-12

150

40 CFR 81.258 - Northwest Iowa Intrastate Air Quality Control Region.  

Code of Federal Regulations, 2013 CFR

...State of Iowa: Buena Vista County, Calhoun County, Cherokee County, Clay County, Dickinson County, Emmet County, Ida County, O'Brien County, Osceola County, Palo Alto County, Pocahontas County, Sac...

2013-07-01

151

66 FR 66425 - Notice of Determinations Regarding Eligibility to Apply for Worker Adjustment Assistance and...  

Federal Register 2010, 2011, 2012, 2013

...Inc., A Subsidiary of Salton, Inc., Boonville, MO...Medical, Santa Barbara, CA: Sepgember 29, 2000...Inc., A Subsidiary of Salton, Inc., Boonville, MO...Satcom Div., Palo Alto, CA: October 4, 2000....

2001-12-26

152

Avaliacao de Areas Indigenas Utilizando-Se Dados TM/Landsat (Evaluation of Indigenous Areas Utilizing TM/LANDSAT Data).  

National Technical Information Service (NTIS)

The objective is to provide environmental information about indigenous areas. The study area is located in Boa Vista, Bonfim e Alto Alegre in Roraima Territory, Brazil. Based on visual analysis of TM/LANDSAT data, several classes of vegetation associated ...

P. H. Filho K. Defaria

1990-01-01

153

Mapeamento DA Vegetacao/USO DA Terra de Areas Indigenas Utilisando-Se Dados TM/LANDSAT (Mapping of Vegetation/Land Use of Indigenous Areas Utilizing TM/LANDSAT Data).  

National Technical Information Service (NTIS)

The objective of this work is to provide environmental information about indigenous areas (Ananas Ponta da Serra, Cajueiro, Ouro, Araca, Serra da Moca, Recanto da Saudade). The study area is located in Boa Vista, Bonfim, and Alto Alegre municipalities in ...

P. Hernandezfilho K. Defaria

1990-01-01

154

Okhrana: The Paris Operations of the Russian Imperial Police.  

National Technical Information Service (NTIS)

Contents: Foreword; Preface - Okhrana: The Paris Operations of the Russian Imperial Police; From Paris to Palo Alto; CIA Interest in the Okhrana Files; Origins of the Okhrana and Its Paris Office; Foreign Operations; Change and Continuity; Dramatis Person...

1997-01-01

155

Effect of High Altitude Exposure, Antioxidant Supplementation, and Exercise on Postural Stability.  

National Technical Information Service (NTIS)

Hypoxia caused by rapid travel to high mountain areas can have devastating effects on the health and performance of sensitive individuals. To better understand the factors involved in these detrimental effects, in 2002, the Palo Alto Veterans Affairs Hosp...

A. Cymerman K. Stone A. L. Friedlander S. R. Muza C. S. Fulco

2006-01-01

156

Measurement of Precipitation Induced Fuv Emission and Geocoronal Lyman alpha from the IMI Mission.  

National Technical Information Service (NTIS)

This final report describes the activities of the Lockheed Martin Palo Alto Research Laboratory in studying the measurement of ion and electron precipitation induced Far Ultra-Violet (FUV) emissions and Geocoronal Lyman Alpha for the NASA Inner Magnetosph...

S. B. Mende S. A. Fuselier R. L. Rairden

1995-01-01

157

Tantalite(Mn) from the Borborema Pegmatite Province, northeastern Brazil: conditions of formation and melt- and fluid-inclusion constraints on experimental studies  

Microsoft Academic Search

Carbon dioxide-rich fluid and carbonate-rich aluminosilicate melt inclusions in tantalite-(Mn) from the Alto do Giz pegmatite\\u000a in the Borborema Pegmatite Province, northeastern Brazil were investigated to constrain the formation of the host crystals.\\u000a The results demonstrate that in the Alto do Giz pegmatite, water- and alkaline carbonate-rich fluids and melts are responsible\\u000a for the transport and deposition of tantalite-(Mn) at

Rainer Thomas; Paul Davidson; Hartmut Beurlen

158

On the evolutionary status of early-type galaxies in clusters at z~ 0.2 - I. The Fundamental Plane  

Microsoft Academic Search

We investigate a spectroscopic sample of 48 early-type galaxies in the rich cluster Abell 2390 at z= 0.23 and 48 early-type galaxies from a previously published survey of Abell 2218 at z= 0.18. The spectroscopic data of A2390 are based on multi-object spectroscopy using the multi-object spectrograph for Calar Alto at the 3.5-m telescope on Calar Alto Observatory and are

Alexander Fritz; Bodo L. Ziegler; Richard G. Bower; Ian Smail; Roger L. Davies

2005-01-01

159

Chemical and isotopic relationships between peridotite xenoliths and mafic–ultrapotassic rocks from Southern Brazil  

Microsoft Academic Search

Peridotite xenoliths from the late-Cretaceous Alto Paranaíba and Goiás mafic–alkalic magmatic provinces of central and southeast Brazil reveal the existence of compositionally and temporally distinct lithospheric mantle beneath these areas. Garnet and spinel–lherzolites and spinel–harzburgites from the Alto Paranaíba province are generally depleted in Ca, Al and Re, which indicates that they are residues of melt extraction. Old Re-depletion model

Richard W. Carlson; Ana Lucia N. Araujo; Tereza C. Junqueira-Brod; José Carlos Gaspar; José Affonso Brod; Ivan A. Petrinovic; Maria Helena B. M. Hollanda; Marcio M. Pimentel; Suzanna Sichel

2007-01-01

160

WASP-12b transits (Maciejewski+, 2011)  

NASA Astrophysics Data System (ADS)

Light curves of two WASP-12b's transits observed during 2 runs on 2 and 26 February, 2010 are given. Data were collected with the Calar Alto Faint Object Spectrograph (CAFOS) on the 2.2-m telescope at Calar Alto Observatory (Spain). Magnitudes in R band were determined with the aperture photometry method against comparison stars. Trends caused by differential atmospheric extinction were removed. (1 data file).

Maciejewski, G.; Errmann, R.; Raetz, St.; Seeliger, M.; Spaleniak, I.; Neuhaeuser, R.

2011-01-01

161

Shadows of the colonial past - diverging plant use in Northern Peru and Southern Ecuador  

PubMed Central

This paper examines the traditional use of medicinal plants in Northern Peru and Southern Ecuador, with special focus on the Departments of Piura, Lambayeque, La Libertad, Cajamarca, and San Martin, and in Loja province, with special focus on the development since the early colonial period. Northern Peru represents the locus of the old Central Andean "Health Axis." The roots of traditional healing practices in this region go as far back as the Cupisnique culture early in the first millennium BC. Northern Peru and Southern Ecuador share the same cultural context and flora but show striking differences in plant use and traditional knowledge. Two hundred fifteen plant species used for medicinal purposes in Ecuador and 510 plant species used for medicinal purposes in Peru were collected, identified,. and their vernacular names, traditional uses, and applications recorded. This number of species indicates that the healers, market vendors, and members of the public interviewed in Peru still have a very high knowledge of plants in their surroundings, which can be seen as a reflection of the knowledge of the population in general. In Ecuador much of the original plant knowledge has already been lost. In Peru, 433 (85%) were Dicotyledons, 46 (9%) Monocotyledons, 21 (4%) Pteridophytes, and 5 (1%) Gymnosperms. Three species of Giartina (Algae) and one species of the Lichen genus Siphula were used. The families best represented were Asteraceae with 69 species, Fabaceae (35), Lamiaceae (25), and Solanaceae (21). Euphorbiaceae had 12 species, and Poaceae and Apiaceae each accounted for 11 species. In Ecuador the families best represented were Asteraceae (32 species), Euphorbiaceae, Lamiaceae, and Solanaceae (11 species each), and Apiaceae, Fabaceae, Lycopodiaceae (9 species each). One hundred eighty-two (85%) of the species used were Dicotyledons, 20 Monocotyledons (9.3%), 12 ferns (5.5%), and one unidentified lichen was used. Most of the plants used (83%) were native to Peru and Ecuador. Fresh plants, often collected wild, were used in two thirds of all cases in Peru, but in almost 95% of the cases in Ecuador. The most common applications included the ingestion of herb decoctions or the application of plant material as poultices. Although about 50% of the plants in use in the colonial period have disappeared from the popular pharmacopoeia, the overall number of plant species used medicinally has increased in Northern Peru, while Southern Ecuador shows a decline of plant knowledge since colonial times.

Bussmann, Rainer W; Sharon, Douglas

2009-01-01

162

PYRAMIR: construction and implementation of the world's first infrared pyramid sensor  

NASA Astrophysics Data System (ADS)

In this paper we present an overview of the construction and implementation of the unmodulated infrared pyramid wavefront sensor PYRAMIR at the Calar Alto 3.5 m telescope. PYRAMIR is an extension of the existing visible Shack-Hartmann adaptive optics system ALFA, which allows wavefront sensing in the near-infrared wavefront regime. We describe the optical setup and the calibration procedure of the pyramid wavefront sensor. We discuss possible drawbacks of the calibration and show the results gained on Calar Alto.

Peter, D.; Baumeister, H.; Bizenberger, P.; Feldt, M.; Henning, Th.; Hippler, S.; Ligori, S.; Mall, U.; Neumann, U.; Salm, N.; Storz, C.; Wagner, K.

2006-07-01

163

Probing nuclear structures in the vicinity of 78Ni with ?- and ?n-decay spectroscopy of 84Ga  

NASA Astrophysics Data System (ADS)

The decay of 84Ga has been reinvestigated at the PARRNe online mass separator of the electron-driven installation ALTO at IPN Orsay. The nominal primary electron beam of 10 ?A (50 MeV) on a 238UCx target in combination with resonant laser ionization were used for the first time at ALTO. Improved level schemes of the neutron-rich 83,84Ge (Z=32) isotopes were obtained. The experimental results are compared with the state-of-the-art shell model calculations and discussed in terms of collectivity development in the natural valence space outside the 78Ni core.

Kolos, K.; Verney, D.; Ibrahim, F.; Le Blanc, F.; Franchoo, S.; Sieja, K.; Nowacki, F.; Bonnin, C.; Cheikh Mhamed, M.; Cuong, P. V.; Didierjean, F.; Duchêne, G.; Essabaa, S.; Germogli, G.; Khiem, L. H.; Lau, C.; Matea, I.; Niikura, M.; Roussière, B.; Stefan, I.; Testov, D.; Thomas, J.-C.

2013-10-01

164

Radon tides on an active volcanic island: Terceira, Azores  

Microsoft Academic Search

Twelve synchronous, continuously recording underground radon monitoring stations on the geothermally and tectonically active volcano Pico Alto, Terceira Island, Azores, are used to identify and quantify underground radon movements. Findings include: (1) Meteorological variations have negligible effects on underground radon emanations. (2) As a function of lunar month, radon emanations generate repetitive patterns in time and magnitude for several consecutive

F. Aumento

2002-01-01

165

Vegetation mapping and nature conservation: a case study in Terceira Island (Azores)  

Microsoft Academic Search

In order to emphasize the importance of vegetation mapping for nature conservation purposes a case study in Terceira island (Azores) is presented, in which the importance of the natural vegetation of the eastern slope of Santa Bárbara volcano (which is part of the Site of Community Importance of Santa Bárbara–Pico Alto) is evaluated through the elaboration of its vegetation map.

Eduardo Dias; Rui B. Elias; Vasco Nunes

2004-01-01

166

El Impacto de los Cambios Climáticos sobre la Salud en Bolivia: Estimación de Costos y Beneficios hasta el 2100  

Microsoft Academic Search

Bolivia es en uno de los países con mayor vulnerabilidad a enfermedades en Latinoamérica. De los 327 municipios que se tenían el 2003, gran parte de ellos presentaron altos grados de vulnerabilidad en lo que se refiere a las Enfermedades Diarreicas Agudas (EDA’s) e Infecciones Respiratorias Agudas (IRA’s) en el occidente del país y alta vulnerabilidad en Malaria y Dengue

Oscar Molina

2009-01-01

167

Caracterización de tintas de titanio dopadas con óxidos metálicos  

Microsoft Academic Search

Se prepararon tintas de Diisopropoxido de titanio bis(acetilacetonato) por el método sol-gel para aplicar en la elaboración de nanoestructuras mediante la técnica de escritura directa. Esta técnica permite estructurar materiales con alto índice de refracción a escala micro y nanométrica en tres dimensiones mediante extrusión, para elaborar cristales fotónicos. El tratamiento de las nanoestructuras extruidas a temperaturas elevadas para transformarlas

C. R. TUBÍO; F. GUITIÁN; A. GIL

168

Reducción de la pobreza y la desigualdad en el hemisferio. VI Cumbre de las Américas  

Microsoft Academic Search

Resumen Ejecutivo. No obstante la heterogeneidad de los países que la componen, históricamente América Latina y el Caribe (LAC) se ha caracterizado por altos y persistentes niveles de pobreza, desigualdad y exclusión social. Para algunos analistas LAC es la región más desigual del mundo no solamente en términos de ingresos sino también en cuanto a acceso a oportunidades (Ferreira y

Roberto Steiner; Adriana Sabogal Moreno

2011-01-01

169

Health Maintenance Education and Services for Senior Adults: Program Resume: Project S.M.I.L.E. [Services to Maintain Independent Living for the Elderly].  

ERIC Educational Resources Information Center

|The program to provide basic health information and skills for older persons was sponsored by the city of Palo Alto with the cooperation of 14 health agencies. Weekly morning classes featured 12 topics ranging from exercise to coping with cancer and were presented by health professionals in as nontechnical a manner as possible. The classes were…

Menker, Barbara W.

170

Being ‘an authentic alteño’: young people in a Bolivian Andean city  

Microsoft Academic Search

What does it mean to be young in El Alto, a Bolivian shantytown? Based on ethnographic research, this article looks at cultural resilience among young people in a vulnerable urban context. It emphasises how young people value informal youth groups as a tool to valorise their own indigenous culture. This is echoed in the world of adults, implying that the

Melania Calestani

2012-01-01

171

Being "An Authentic Alteno": Young People in a Bolivian Andean City  

ERIC Educational Resources Information Center

|What does it mean to be young in El Alto, a Bolivian shantytown? Based on ethnographic research, this article looks at cultural resilience among young people in a vulnerable urban context. It emphasises how young people value informal youth groups as a tool to valorise their own indigenous culture. This is echoed in the world of adults, implying…

Calestani, Melania

2012-01-01

172

EL CULTO K EN LA ERA CONTEMPORANEA: CRÓNICA, GÉNESIS Y APOTEOSIS DEL PROCESO KIRCHNERISTA  

Microsoft Academic Search

Desde el año 2003, con la asunción de N. Kirchner y posterior relevo de su mujer Cristina F. de Kirchner la Argentina ha experimentado una nueva razón para creer en la política pero a un costo muy alto. El trauma inicial que subsumió a la Argentina en grandes tasas de pobreza y desocupación consolidaron las bases para el nacimiento de

Maximiliano E. Korstanje

2011-01-01

173

CONSERVACIÓN IN VITRO DE CHAYOTE (Sechium edule)1  

Microsoft Academic Search

, 10 -6 y 10 -3 M) al medio de cultivo, de disminuciones en la tem- peratura de crecimiento (16, 18, 20, 22 y 25ºC) y combinacio- nes de estos factores, en Costa Rica, en 1997. Se encontró que los brotes mantuvieron altos porcentajes de viabilidad después de ser conservados durante seis meses en los tratamientos eva- luados. Debido a

Silvana Alvarenga-Venutolo; Ana Abdelnour-Esquivel; Víctor Villalobos-Aránbula

2007-01-01

174

DIET AND REPRODUCTION ASPECTS OF ASTYANAX AUROCAUDATUS (TELEOSTEI: CHARACIDAE) FROM THE UPPER PART OF THE RÍO CAUCA, COLOMBIA  

Microsoft Academic Search

Diet and reproductive studies of the characid A. aurocaudatus from alto Río Cauca were carried out. The species reproduces in the rainy and dry season and is nonmigratory. Sexual maturity is achieved at 25 mm standard length as well in males as in females fiches. Fecundity is low (181 oocytes), and sex ratio is 2:1, with predominance of females. A

César Román-Valencia; Raquel I. Ruiz

2005-01-01

175

Virtually sequenced: The next genomic generation  

SciTech Connect

The announcement of {open_quotes}virtual genomics{close_quotes} requires evaluation of the efficiency and accuracy of computer-generated sequencing efforts. {open_quotes}Digital Northerns{close_quotes}, or Northern blot electrophoresis done in the realm of computer data, have been developed by Incyte Pharmaceuticals (Palo Alto, CA) and Human Genome Sciences (Rockville, MD). 12 refs., 2 figs.

Bains, W. [PA Consulting Group, Melbourn (United Kingdom)

1996-06-01

176

Privatisation and Renationalisation: What Went Wrong in Bolivia?s Water Sector?  

Microsoft Academic Search

This paper investigates the concentration of access to safe water across income levels in Bolivia. In particular, it focuses on how privatisation has changed coverage, affordability and the concentration of access to water on the part of the poor. We compare the performance of cities in which the service was privatised (La Paz and El Alto) with a city in

Degol Hailu; Rafael Guerreiro Osorio; Raquel Tsukada

2009-01-01

177

Rehabilitation Engineering Center with Research in Controls and Interfaces for Severely Disabled People. Progress Report for Third Year Grant, September 30, 1980-September 29, 1981.  

ERIC Educational Resources Information Center

|The Rehabilitation Engineering Center (Palo Alto, California) has developed a wide range of patient services which provide assistance to the disabled community in northern California and various research activities which have had impact on the disabled population nationally. The Center has three philosophical goals: to assist each child toward as…

LeBlanc, Maurice A.

178

Governor: Autonomic Throttling for Aggressive Idle Resource Scavenging  

Microsoft Academic Search

Scavenging (or resource borrowing) is a common ap- proach used to harness unused resources to perform use- ful calculations. Since these are volunteer contributions from resource owners, it is vital to reduce the impact of scavenging activities on their native workload to a min- imum. To this end, existing impact control systems are either overly conservative in stopping scavenging alto-

Jonathan W. Strickland; Vincent W. Freeh; Xiaosong May; Sudharshan S. Vazhkudai

179

Governor: Autonomic Throttling for Aggressive Idle Resource Scavenging  

Microsoft Academic Search

Scavenging (or resource borrowing) is a common ap- proach used to harness unused resources to perform use- ful calculations. Since these are volunteer contributions from resource owners, it is vital to reduce the impact of scavenging activities on their native workload to a min- imum. To this end, existing impact control systems are either overly conservative in stopping scavenging alto-

Jonathan W. Strickland; Vincent W. Freeh; Xiaosong Ma; Sudharshan S. Vazhkudai

2005-01-01

180

Comparative odontometrical analysis of the first lower molar in Microtus (Terricola) multiplex (Arvicolinae, Rodentia) from western Alps  

Microsoft Academic Search

The morphology of the first lower molar (M1) of Microtus (Terricola) multiplex (Fatio, 1905) was compared amongst 15 populations from the Alps (Switzerland, Italy, France). M. multiplex orientalis from Trentino Alto Adige is close to the nominative subspecies M. multiplex multiplex from Ticino characterised by a great size, a not tilted pitymyan rhombus and an important development of the anterior

Patrick Brunet-Lecomte; Armando Nappi; Sophie Montuire

2010-01-01

181

Midface lift technique with use of a biodegradable device for tissue elevation and fixation  

Microsoft Academic Search

Background: Aesthetic surgeons have become increasingly aware that elevation of the midface is a significant component of facial rejuvenation. However, adequate fixation remains a problem in midface lift procedures, regardless of the approach. Objective: The purpose of this study was to evaluate the efficacy and ease of application of the Endotine midface device (Coapt Systems, Palo Alto, CA), as well

R. Laurence Berkowitz; David B. Apfelberg; Sherry Simeon

2005-01-01

182

Proceedings of the Axial Offset Anomaly (AOA) Science Workshop  

SciTech Connect

This report presents proceedings of the Axial Offset Anomaly (AOA) Science Workshop, held February 10-11 in Palo Alto, California. Twenty-two papers were presented on various aspects of AOA by utilities, EPRI Robust Fuel Program contractors, staff from EPRI and universities, international researchers, and equipment vendors.

None

2003-06-01

183

Status report of PYRAMIR: a near-infrared pyramid wavefront sensor for ALFA  

Microsoft Academic Search

A new wavefront sensor based on the pyramid principle is being built at MPIA, with the objective of integration in the Calar Alto adaptive optics system ALFA. This sensor will work in the near-infrared wavelength range (J, H and K bands). We present here an update of this project, named PYRAMIR, which will have its first light in some months.

Joana B. Costa; Markus Feldt; Karl Wagner; Peter Bizenberger; Stefan Hippler; Harald Baumeister; Micaela Stumpf; Roberto Ragazzoni; Simone Esposito; Thomas Henning

2004-01-01

184

Adoption of Energy Conservation among California Homeowners.  

ERIC Educational Resources Information Center

In spring 1977, just as California was emerging from one of the worst droughts in its history, 215 Palo Alto homeowners were interviewed about their views on energy and water conservation, and about the extent to which they had adopted 11 energy-conserving practices (ECP) in the home. The objective was to discover variables both important to…

Leonard-Barton, Dorothy; Rogers, Everett M.

185

Personal Dynamic Media  

Microsoft Academic Search

The Learning Research Group at Xerox Palo Alto Research Center is concerned with all aspects of the communication and manipulation of knowledge. We design, build, and use dynamic media which can be used by human beings of all ages. Several years ago, we crystallized our dreams into a design idea for a personal dynamic medium the size of a notebook

A. Kay; A. Goldberg

1977-01-01

186

MACAW: A Media Access Protocol for Wireless LAN's  

Microsoft Academic Search

In recent years, a wide variety of mobile computing devices has emerged, including portables, palmtops, and personal digit al assistants. Providing adequate network connectivity y for these devices will require a new generation of wireless LAN technology. In this paper we study media access pro- tocols for a single channel wireless LAN being developed at Xerox Corporation's Palo Alto Research

Vaduvur Bharghavan; Alan J. Demers; Scott Shenker; Lixia Zhang

1994-01-01

187

Sixteenth annual EPRI conference on fuel science: Proceedings  

SciTech Connect

EPRI's Sixteenth Annual Contractor's Conference on Fuel Science was held on June 18--20, 1991 in Palo Alto, California. The Conference focused on the following activities: use of coal pretreatment as a Clean Air compliance strategy, alternative fuels (methanol, coal derived liquids), and cleanup of soil contaminated by fuels (including Manufactured Gas Plant sites).

Not Available

1992-04-01

188

Adoption of Energy Conservation among California Homeowners.  

ERIC Educational Resources Information Center

|In spring 1977, just as California was emerging from one of the worst droughts in its history, 215 Palo Alto homeowners were interviewed about their views on energy and water conservation, and about the extent to which they had adopted 11 energy-conserving practices (ECP) in the home. The objective was to discover variables both important to…

Leonard-Barton, Dorothy; Rogers, Everett M.

189

Plenary.  

ERIC Educational Resources Information Center

|Presents a biography of John Seely Brown, chief scientist of Xerox Corporation and the director of its Palo Alto Research Center (PARC). Interests include formation of corporate strategy; corporate research, including organizational learning, ethnographies of the workplace, and complex adaptive systems; and human learning and the management of…

Brown, John Seely

2000-01-01

190

Careers in International Law : Private Sector Opportunities  

Microsoft Academic Search

Charles Comey Chuck Comey is a corporate finance partner in Morrison & Foerster's Palo Alto office. Before relocating to Silicon Valley in July 2010, he opened and served as Managing Partner of the firm's Shanghai office for seven years, and worked on the ground both in China and Japan for over 16 years. As co-chair of Morrison & Foerster’s China

Charles Comey; Dana Haviland; William R. Black

2012-01-01

191

Chironomidae (Diptera) do Rio Ribeira (divisa dos Estados de São Paulo e Paraná) numa avaliação ambiental faunística  

Microsoft Academic Search

Chironomidae (Diptera) in Rio Ribeira (border between the States of São Paulo and Paraná) in an Environmental faunistic evaluation- During a program of limnological characterization, the macrobenthic community was evaluated in a section of river Ribeira, in the area included of the future reservoir UHE Tijuco Alto. In the four expeditions, during XII\\/95 to IX\\/96, samples were collected in five

Susana Trivinho-Strixino; Giovanni Strixino

2005-01-01

192

Soil Remediation of an Arsenic-Contaminated Site With Ferrous Sulfate and Type V Portland Cement  

Microsoft Academic Search

High levels of arsenic are present in a site adjacent to San Francisco Bay (in East Palo Alto, CA) as a consequence of the activity of a former pesticide manufacturing plant. Most of the readily accessible arsenic at the site has been removed by remedial excavation and surface capping. In-situ fixation of residual arsenic was performed close to the source

V. Illera; P. A. O'Day; N. Rivera; R. Root; M. T. Rafferty; D. Vlassopoulos

2005-01-01

193

Fructans and major compounds in onion cultivars ( Allium cepa)  

Microsoft Academic Search

The moisture, ash, protein, Brix degree, glucose, fructose, sucrose, total fructans and total sugar, total and insoluble fibre contents were quantified in five traditional onion cultivars from Tenerife (Guayonje, San Juan de la Rambla, Carrizal Alto, Carrizal Bajo and Masca) and a commercial cultivar (Texas Early Grano 502). The ratio between insoluble and soluble dietary fibre (IDF:SDF) and between glucose

B. Rodríguez Galdón; C. Tascón Rodríguez; E. M. Rodríguez Rodríguez; C. Díaz Romero

2009-01-01

194

ANÁLISE ECONOMÉTRICA DO CONSUMO DE AÇAÍ NO EVIEWS 3.1 NA REGIÃO METROPOLITANA DE BELÉM – PARÁ – BRASIL  

Microsoft Academic Search

O estudo descrito neste trabalho pretende realizar uma análise econométrica a cerca do consumo de açaí, fruto regional de alto consumo pelos Paraenses, realizada na região metropolitana de Belém no Eviews 3.1 utilizando a relação do consumo com algumas variáveis definidas para a pesquisa (preço da farinha de tapioca, da farinha, das despesas familiares com alimentação e quantidade de pessoas

Carlos Gilberto Vieira da Silva Júnior; Edivaldo Lima Sousa Filho; Rafaela Casseb e Silva; Heriberto Wagner Amanajás Pena

2012-01-01

195

Response of two coast redwood ( Sequoia sempervirens Endl.) varieties to moderate levels of salt and boron spray measured by stress symptoms: Implications for landscape irrigation using recycled water  

Microsoft Academic Search

Coast redwood (Sequoia sempervirens Endl.) is a popular evergreen tree in landscapes of California and the Pacific Coast States of the United States and Western Canada. Two varieties, Aptos Blue and Los Altos, were tested firstly for tolerance to sodium chloride (NaCl) and boron (B) spray and then in landscape setting when irrigated with recycled water. The NaCl and B

Lin Wu; Xun Guo

2006-01-01

196

Salute mentale ed alterazione delle abitudini di vita dei lavoratori giovani  

Microsoft Academic Search

RIASSUNTO. Le alterazioni delle abitudini di vita costituiscono fattori di rischio per la salute. Esse determinano da un lato un alto tasso di patologie e mortalità, e dall'altro la riduzione del rendimento lavorativo e l'aumento del rischio di infortuni, con ripercussioni rilevanti sia in termini di salute dei lavoratori che economici. Lo scopo di questo studio è di analizzare le

G. Tomei; C. Cangemi; R. Giubilati; M. Fioravanti

2007-01-01

197

DATOS PARA EL DESARROLLO DE UNA RED INTEGRADA DE SEGUIMIENTO DE LA CALIDAD DE SUELOS EN GALICIA (N.O. DE ESPAÑA): BALANCES GEOQUÍMICOS EN SUELOS FORESTALES (Pinus radiata). 1. APORTES DE ELEMENTOS POR DEPOSICIÓN ATMOSFÉRICA Y HOJARASCA  

Microsoft Academic Search

A dynamic study of the balances of the principal elements in a Pinus radiata D. Don forest system was carried out during two consecutive years (1997\\/8), in a forest plot situated in the centre of Galicia (Alto de O Martelo, A Coruña, NW Spain). The aim of the study was to obtain data that would allow reference levels to be

M. X. GÓMEZ-REY; R. CALVO DE ANTA

198

ANÁLISIS PRELIMINAR DE COMPUESTOS FENÓLICOS Y CAPSAICINOIDES EN VARIEDADES DE CHILE CON DIFERENTE CAPACIDAD PUNGENTE  

Microsoft Academic Search

El chile jalapeño provoca un alto nivel de irritación a diferentes niveles del tracto estomacal en comparación con el chile habanero. A pesar de que el chile habanero presenta una mayor capacidad pungente, no es irritante. A la fecha se desconoce la naturaleza de los compuestos responsables de este efecto. En el presente trabajo se reporta el análisis preliminar de

Salvador Horacio; Guzmán Maldonado; Irineo Torres Pacheco; Mario González Chavira; María Alejandra; Mora Avilés; Guadalupe Herrera Hernández; David Hernández López

199

La productivité des salariés âgés : une tentative d'estimation  

Microsoft Academic Search

[spa] La productividad de los asalariados de más edad: un ensayo de estimación . . En un promedio, los salarios aumentan con la edad del asalariado. Lo natural es preguntarse si los salarios más altos de los trabajadores de más edad corresponden o no a una productividad más alta. La respuesta no carece de consecuencia sobre la empleabilidad de dichos

Patrick Aubert; Bruno Crépon

2003-01-01

200

A Spring in their Steps? Possibilities for Professional Renewal through Sport Education in Australian Schools  

Microsoft Academic Search

We report on three projects and an accompanying critical research agenda designed to establish and evaluate a new pedagogy in Australian physical education based on the sport education curriculum model first published by Siedentop et al. [Siedentop, D., Mand, C. & Taggart, A. (1986) Physical Education: Teaching and Curriculum Strategies for Grades 5?12 (Palo Alto, Mayfield]. The projects, involving over

Ken Alexander; Andrew Taggart; Stephen Thorpe

1996-01-01

201

DETERMINACIÓN Y CARACTERIZACIÓN DE MICROORGANISMOS PRESENTES EN LA MASA PARA TORTILLA DE MAÍZ EN TORTILLERIAS DEL MUNICIPIO DE SALTILLO, COAHUILA  

Microsoft Academic Search

La tortilla es un producto alimenticio derivado del maíz y es de muy alto consumo en nuestro país. La elaboración de la masa para tortilla esta constituida por las siguientes materias primas como es el maíz, agua y óxido de calcio (Cal). 5 La otra manera más sencilla para preparar la masa es mediante la mezcla de harinas instantáneas y

Q. F. B. Flores; Chávez Héctor; Q. F. B. Zamora de los; Villarreal López

202

Mathematical modeling of a lithium ion battery with thermal effects in COMSOL Inc. Multiphysics (MP) software  

Microsoft Academic Search

The existing lithium ion battery model in Multiphysics (MP) software (COMSOL Inc., Palo Alto, CA) is extended to include the thermal effects. The thermal behavior of a lithium ion battery is studied during the galvanostatic discharge process with and without a pulse.

Long Cai; Ralph E. White

2011-01-01

203

Experiencias de Valoración Económica del Manejo Sustentable de la Calidad del Aire y de la Contaminación: Ejemplos de Experiencias, Implicaciones Políticas y Aplicabilidad en el Contexto de la Región  

Microsoft Academic Search

Esta presentación fue comisionada por la Red de Medio Ambiente del Diálogo Regional de Política para la III Reunión Hemisférica celebrada los días 9 y 10 de marzo de 2004. Las ciudades de Latinoamérica tienen niveles altos de contaminación atmosférica, principalmente de material particulado. No hay duda de que la contaminación atmosférica produce efectos nocivos a altas concentraciones, pero la

Luis A. Cifuentes

2004-01-01

204

Valoración Económica del Manejo Sustentable de la Calidad del Aire y de la Contaminación: Ejemplos de Experiencias, Implicaciones Políticas y Aplicabilidad en el Contexto de la Región  

Microsoft Academic Search

Esta presentación fue comisionada por la Red de Medio Ambiente del Diálogo Regional de Política para la III Reunión Hemisférica celebrada los días 9 y 10 de marzo de 2004. Las ciudades de Latinoamérica tienen niveles altos de contaminación atmosférica, principalmente de material particulado. No hay duda de que la contaminación atmosférica produce efectos nocivos a altas concentraciones, pero la

Luis A. Cifuentes

2004-01-01

205

Support for a Link between the Local Processing Bias and Social Deficits in Autism: An Investigation of Embedded Figures Test Performance in Non-Clinical Individuals  

ERIC Educational Resources Information Center

|The aim of this investigation was to explore the degree to which specific subsets of autistic-like traits relate to performance on the Embedded Figures Test (Witkin et al. in A manual for the embedded figures test. Consulting Psychologists Press, Palo Alto, CA, 1971). In the first group-based investigation with this focus, students were selected…

Russell-Smith, Suzanna N.; Maybery, Murray T.; Bayliss, Donna M.; Sng, Adelln A. H.

2012-01-01

206

The Efficacy and Tolerability of Clobetasol Propionate Foam 0.05% in the Treatment of Mild to Moderate Plaque-type Psoriasis of Nonscalp Regions  

Microsoft Academic Search

Background: Clobetasol propionate foam 0.05% (Connetics Corporation, Palo Alto, CA) is approved by the United States Food and Drug Administration for the treatment of corticosteroid-responsive scalp dermatoses, but there is only limited data available for its efficacy and tolerability in treating dermatoses which affect nonscalp sites. Objective: The efficacy and tolerability of clobetasol propionate foam (clobetasol foam) in treating psoriatic

Alice B. Gottlieb; Rosanne Odom Ford; Mary C. Spellman

2003-01-01

207

Role of fractures in weathering of solid rocks: narrowing the gap between laboratory and field weathering rates  

Microsoft Academic Search

A weathering study of a fractured environment composed of granites and metasediments was conducted in Trás-os-Montes and Alto Douro (north of Portugal) and covered the hydrographic basin of Sordo river. Within the basin, a number of perennial springs were monitored for discharge rate, which allowed for the estimation of annual recharges. A small area of the basin was characterized for

Fernando A. L. Pacheco; Ana M. P. Alencoão

2006-01-01

208

Library Voices; Cassette Conversations in a Tape Exchange.  

ERIC Educational Resources Information Center

A proposal is made for an exchange of cassette tapes from librarians, teachers, and students between Palo Alto, California, and Queensland, Australia. The objectives of the project are to help children and adults from both countries to form a closer understanding, and to stimulate and share thoughts and ideas. Suggested activities include singing,…

Christine, Emma Ruth

209

The Exceptional Poet.  

ERIC Educational Resources Information Center

|As part of the adult education program of Mountain View-Los Altos (California) High School District, elderly patients at skilled nursing care facilities take classes in poetry. The poetry classes are therapeutic in nature, satisfying a real need for these very ill elderly people to express their frustrations, hopes, fears, and joys. All of the…

Barton, Julianne M.

210

Rehabilitation Engineering Center with Research in Controls and Interfaces for Severely Disabled People. Progress Report for Third Year Grant, September 30, 1980-September 29, 1981.  

ERIC Educational Resources Information Center

The Rehabilitation Engineering Center (Palo Alto, California) has developed a wide range of patient services which provide assistance to the disabled community in northern California and various research activities which have had impact on the disabled population nationally. The Center has three philosophical goals: to assist each child toward as…

LeBlanc, Maurice A.

211

Participación en el deporte y fair play  

Microsoft Academic Search

Este estudio examinó si la participación en deportes de contacto medio repercute en las opiniones so- bre las conductas y actitudes de fair play en el contexto deportivo, y si estos efectos están mediatiza- dos por la orientación al ego. Los participantes fueron deportistas universitarios de alto nivel y depor- tistas profesionales (N= 131) de baloncesto y fútbol. Completaron cuestionarios

José A. Cecchini Estrada; Carmen González González-Mesa; Javier Montero Méndez

2007-01-01

212

INFORMATION AND DECISION THEORIES APPLIED TO COLLEGE CHOICE AND PLANNING.  

ERIC Educational Resources Information Center

|INFORMATION AND DECISION THEORY OFFERS A COHERENT FRAMEWORK FOR SECONDARY SCHOOL GUIDANCE BECAUSE IT--(1) ESTABLISHES OBJECTIVES, (2) DETERMINES APPROPRIATE PRACTICES, (3) SELECTS AREAS OF RESEARCH, AND (4) EVALUATES PROGRESS TOWARD THESE OBJECTIVES. THE DECISION-MAKING PROGRAM IN THE PALO ALTO, CALIFORNIA SECONDARY SCHOOLS HELPS NINTH AND 11TH…

GELATT, H.B.

213

The veterans administration and community mental health: New approaches in psychiatric rehabilitation  

Microsoft Academic Search

The large government mental institution must become increasingly integrated with local community mental health programs. The Veterans Administration Hospital, Palo Alto, California, provides an example of how one such institution involves its programs with the community. The traditional hospital-based sheltered workshop, when operated as a nonprofit corporation, is especially well suited to the employment of mental patients in workshop-owned enterprises

Joseph M. McDonough

1969-01-01

214

INTERLISP documentation  

Microsoft Academic Search

Documentation for INTERSLIP in the form of the INTERSLIP Reference Manual is now available and may be obtained from Warren Teitelman, Xerox Palo Alto Research Center. The new manual replaces all existing documentation, and is completely up to date (as to January, 1974). The manual is available in either loose-leaf or bound form. The lose-leaf version (binders not supplied) comes

Warren Teitelman

1974-01-01

215

Variabilidade espacial de atributos físicos do solo associados ao uso e ocupação da paisagem  

Microsoft Academic Search

This work aimed to diagnose current agricultural soil use as well as its implications for the spatial variability of soil bulk density (Ds), organic matter (OM), particle-size distribution and water dispersible clay (WDC), in Ribeirão Marcela watershed, belonging to Alto Rio Grande region, using geostatistics tools, in order to observe occurrence patterns of these attributes in the landscape. Disturbed and

Natalino M. Gomes; Manoel A. de Faria; Antônio M. da Silva; Carlos R. de Mello; Marcelo R. Viola

2007-01-01

216

META II: Formal Co-Verification of Correctness of Large-Scale Cyber- Physical Systems during Design. Volume 1.  

National Technical Information Service (NTIS)

Under the META program, a team led by the Palo Alto Research Center (PARC) is developing a model-based system-engineering framework that enables architectural analysis of complex systems during the conceptual design phase. Using this framework, design tea...

C. Fritz P. Bunus P. Jarvis S. Uckun T. Kurtoglu

2011-01-01

217

An Analysis of Vocal Jazz Repertoire by Three Selected Publishing Companies  

ERIC Educational Resources Information Center

|The purpose of this study was to analyze SATB (soprano, alto, tenor, bass) vocal jazz octavos (N = 150) from three publishers in an effort to (a) identify the most prolific arrangers/composers, (b) cite improvisation opportunities, (c) document publisher improvisation markings, (d) indicate repeated titles, (e) identify most popular styles, and…

Baker, Wilbur R., Jr.

2011-01-01

218

More views on the two-career couple  

Microsoft Academic Search

The Education and Human Resources Committee sponsored a panel session on ``The Two-Career Couple'' during the 1985 AGU Fall Meeting. Panelists were Gerard and Patricia Fryer (Hawaii Institute of Geophysics (HIG), Honolulu), Richard and Christina Scott (Acurex, Inc. and Earth Sciences Associates, Palo Alto), and Catherine Nigrini (private consultant, La Habra, Calif.). The panelists were asked to outline the stages

Connie Sancetta

1986-01-01

219

Reading Your Way to Success in Mathematics: A Paired Course of Developmental Mathematics and Reading  

ERIC Educational Resources Information Center

|In 2005 the Lumina Foundation awarded the Alamo Community College District (ACCD), including Palo Alto College, a grant to explore institutional effectiveness with a primary focus on serving student groups that traditionally have faced significant barriers to success. As a result of the award, ACCD staffed an umbrella initiative called "Achieving…

Kirk, Honey; Lerma, Diane

2010-01-01

220

The spectrum of fireball light taken with a 2-m telescope  

Microsoft Academic Search

A bright fireball appeared on the sky during the spectrophotometric observations with the 2.2-m telescope at the Calar Alto Observatory. The CCD spectrum of the scattered light of the fireball has been recorded. The spectrum is typical for a very bright, slowly moving fireball. For the first time, the spectral region 6600 – 7150 Å could be studied in such

Ji?í Borovi?ka; Jaime Zamorano

1995-01-01

221

Make It Work  

ERIC Educational Resources Information Center

|Annie McQueen, librarian at David Starr Jordan Middle School in the Palo Alto Unified School District in California, is used to figuring out creative ways of getting what her media center needs, even though her budget is minuscule. McQueen gets additional support from the funds generated by the couple of book fairs she hosts each year. Plus, she…

Schaffhauser, Dian

2008-01-01

222

Niveles de resistencia a insecticidas y sus mecanismos en una cepa de Aedes aegypti de Santiago de Cuba  

Microsoft Academic Search

RESUMEN Producto del más reciente brote de dengue en el municipio Santiago de Cuba, se estudió una cepa de este vector para determinar sus niveles de susceptibilidad y\\/o resistencia a insecticidas organofosforados y piretroides. Los resultados de los bioensayos mostraron bajos niveles de resistencia a fentión, malatión y deltametrina, se obtuvieron moderados para temefos, metil- pirimifos y cipermetrina, y altos

Juan A. Bisset; Lorely H. Milá; Eric Calvo

1999-01-01

223

Use of Synthetic Ground Covers to Control Weeds in Blackberries  

Microsoft Academic Search

Weed control in blackberries (Rubus spp.) is a serious problem for organic producers and those who wish to reduce their reliance on herbicides. Three landscape fabrics and one industrial grade white on black plastic were evaluated for weed control in conjuction with newly planted ‘Kiowa’ root cuttings in Feb. 2006 at a site near Monte Alto, Texas (26°N Lat.). In

D. J. Makus

2011-01-01

224

VR light curves of AA Tau in 2007-2013 (Bouvier+, 2013)  

NASA Astrophysics Data System (ADS)

Optical observations of AA Tau were obtained at the Crimean Astrophysical Observatory (CrAO) from October 2007 to February 2013. Additional BVRcIc photometry was obtained on December 23, 2011 using the Cafos focal reducer in direct imaging mode with CCD SITE1d 15 on the 2.2m Calar Alto Telescope. (1 data file).

Bouvier, J.; Grankin, K.; Ellerbroek, L.; Bouy, H.; Barrado, D.

2013-04-01

225

UNA METODOLOGÍA ADMINISTRATIVA PARA LAS PEQUEÑAS Y MEDIANAS EMPRESAS DE LA REGIÓN DE CELAYA  

Microsoft Academic Search

En los últimos años en nuestro país, ha venido cobrando especial relevancia el sector de los micros, pequeñas y medianas empresas (MIPyMES); las estrategias principales del gobierno, están enfocadas precisamente en el apoyo a este sector, que sustenta las cifras actuales de empleo. Sin embargo las condiciones económicas y financieras del entorno han generado un alto grado de incertidumbre, los

Nicolás Barajas-Andrade; Eugenio Guzmán-Soria; Juvencio Hernández-Martínez; Samuel Rebollar-Rebollar

2009-01-01

226

'ESTUDO DA PEROXIDASE NA FENOlOGIA DO AMENDOIM SUBMETIDO A ESTRESSE HíDRIC02  

Microsoft Academic Search

RESUMO - A detecção de marcadores moleculares em plantas de amendoim cultivado tem oferecido contribuição restrita, devido ao alto grau de homogeneidade genética verificada entre os genótipos intraespecíficos. Quando submetidos a mudanças fisiológicas, contudo, os padrões obtidos são de grande contribuição nos estudos elucidativos do comportamento e da fisiologia da planta durante seu desenvolvimento ontogenético. O presente trabalho teve como

ROSEANE CAVALCANTI DOS SANTOS; ALENCAR NUNES; EDNA LOPES CABRAL

227

Fast and accurate read alignment for resequencing  

PubMed Central

Motivation: Next-generation sequence analysis has become an important task both in laboratory and clinical settings. A key stage in the majority sequence analysis workflows, such as resequencing, is the alignment of genomic reads to a reference genome. The accurate alignment of reads with large indels is a computationally challenging task for researchers. Results: We introduce SeqAlto as a new algorithm for read alignment. For reads longer than or equal to 100 bp, SeqAlto is up to 10 × faster than existing algorithms, while retaining high accuracy and the ability to align reads with large (up to 50 bp) indels. This improvement in efficiency is particularly important in the analysis of future sequencing data where the number of reads approaches many billions. Furthermore, SeqAlto uses less than 8 GB of memory to align against the human genome. SeqAlto is benchmarked against several existing tools with both real and simulated data. Availability: Linux and Mac OS X binaries free for academic use are available at http://www.stanford.edu/group/wonglab/seqalto Contact: whwong@stanford.edu

Mu, John C.; Jiang, Hui; Kiani, Amirhossein; Mohiyuddin, Marghoob; Bani Asadi, Narges; Wong, Wing H.

2012-01-01

228

Speaking Personally--With John Seely Brown  

ERIC Educational Resources Information Center

|This article presents an interview with John Seely Brown, a visiting scholar at the University of Southern California and a former chief scientist of Xerox Corporation and director of its Palo Alto Research Center (PARC)--a position he held for nearly two decades. While head of PARC, Brown expanded the role of corporate research to include such…

American Journal of Distance Education, 2008

2008-01-01

229

Familias Multiproblemáticas y en Riesgo Social: Características e Intervención Multiproblem Families at Social Risk: Characteristics and Intervention  

Microsoft Academic Search

El artículo comprende la familia multiproblemática como un sistema vulnerable de alto riesgo, tanto por la acción de sus mecanismos internos, como de fuerzas sociales que potencian su disfuncionalidad. Tras una extensa revisión bibliográfi ca, los autores proponen como sus características centrales la polisintomatología y crisis recurrentes, la desorganización, el abandono de las funciones parentales y el aislamiento, focalizando específi

Esteban Gómez; María Magdalena Muñoz; Ana María Ha

230

A Longitudinal Study of Selected Characteristics of Children's Melodic Improvisations  

ERIC Educational Resources Information Center

This study is an examination of the melodic improvisations of a group of children (N = 62) for 3 years, from ages 7 through 9. Participants improvised as part of a class rondo for Orff instruments, in ABACADA form, in which the B, C, and D sections were 8-measure alto-xylophone improvisations in C pentatonic. Each participant improvised three…

Brophy, Timothy S.

2005-01-01

231

An Anthropology of "The Good Life" in the Bolivian Plateau  

ERIC Educational Resources Information Center

|This paper addresses my understanding of well-being as harmonious relations in the city of El Alto, Bolivia. My approach shows the complexity of issues emerging when dealing with social relations. First of all, I analyse a specific case study showing the moral obligation involved among household members. Then I attempt to provide an insight into…

Calestani, Melania

2009-01-01

232

Competing Interests  

ERIC Educational Resources Information Center

|Foothill College in Los Altos, California and DeAnza College in California are two community colleges that provide higher education for international students. These colleges' commitment to provide education for international students has recently caused a controversial debate among the residents of California. Not all California residents are in…

Mendoza, Veronica

2007-01-01

233

VEINTE MANERAS DE MOTIVAR A UN EQUIPO  

Microsoft Academic Search

Resumen: Este trabajo presenta las distintas formas que posee un entrenador (o el psicólogo que trabaja conjuntamente con él) para mejorar la motivación de sus jugadores y\\/o de su equipo. Se discuten conceptos tales como: trabajo con la derrota; concentración; el aprendizaje del entrenador; confianza y necesidad; las necesidades psicológicas de los deportistas de alto rendimiento; cohesión y cooperación; y

Alexandre Garcia-Mas; Claudia A. Rivas Garza

234

Flat and Depressed Colorectal Growths May Change Screening  

Cancer.gov

A study from the Veterans Affairs (VA) Health Care System in Palo Alto, CA, published in the March 5, 2008 Journal of the American Medical Association adds to a growing body of evidence that nonpolypoid colorectal neoplasms (NP-CRNs) - abnormalities that can appear either flat or depressed relative to the surrounding membrane - can also contain precancerous or cancerous cells.

235

STAR inscribe 6.139 Mujeres en el primer año  

Cancer.gov

El Estudio del Tamoxifeno y Raloxifeno (STAR) inscribió en el primer año 6.139 mujeres posmenopáusicas con un alto riesgo de desarrollar cáncer de seno en este trascendental estudio para la prevención, que comenzó el primero de julio de 1999.

236

Preguntas y respuestas acerca del Estudio del Tamoxifeno y Raloxifeno (STAR)  

Cancer.gov

El Estudio del Tamoxifeno y Raloxifeno (STAR, por sus siglas en inglés) es un estudio clínico (un estudio de investigación conducido con voluntarios) diseñado para ver cómo el medicamento raloxifeno (Evista®) se compara con el medicamento tamoxifeno (Nolvadex®) en reducir la incidencia de cáncer del seno en las mujeres con alto riesgo de desarrollar la enfermedad.

237

New Measurements of Radial Velocities in Clusters of Galaxies.  

National Technical Information Service (NTIS)

Redshifts for 100 galaxies in 10 clusters of galaxies are presented, based on data obtained between March 1984 and March 1985 from Calar Alto, La Palma, and ESO, and on data from Mauna Kea. Data for individual galaxies are given, and the accuracy of the v...

D. Proust A. Talavera E. Salvadorsole A. Mazure H. V. Capelato

1988-01-01

238

An Analysis of Vocal Jazz Repertoire by Three Selected Publishing Companies  

ERIC Educational Resources Information Center

The purpose of this study was to analyze SATB (soprano, alto, tenor, bass) vocal jazz octavos (N = 150) from three publishers in an effort to (a) identify the most prolific arrangers/composers, (b) cite improvisation opportunities, (c) document publisher improvisation markings, (d) indicate repeated titles, (e) identify most popular styles, and…

Baker, Wilbur R., Jr.

2011-01-01

239

FIRST Quantum-(1980)-Computing DISCOVERY in Siegel-Rosen-Feynman-A.-I. Neural-Networks: Artificial(ANN)/Biological(BNN) and Siegel FIRST Semantic-Web and Siegel FIRST ``Page''-``Brin'' ``PageRank'' PRE-Google Search-Engines!!!  

NASA Astrophysics Data System (ADS)

Belew[Finding Out About, Cambridge(2000)] and separately full-decade pre-Page/Brin/Google FIRST Siegel-Rosen(Machine-Intelligence/Atherton)-Feynman-Smith-Marinov(Guzik Enterprises/Exxon-Enterprises/A.-I./Santa Clara)-Wunderman(H.-P.) [IBM Conf. on Computers and Mathematics, Stanford(1986); APS Mtgs.(1980s): Palo Alto/Santa Clara/San Francisco/(1980s); MRS Spring-Mtgs.(1980s): Palo Alto/San Jose/San Francisco/(1980-1992) FIRST quantum-computing via Bose-Einstein quantum-statistics(BEQS) Bose-Einstein CONDENSATION (BEC) in artificial-intelligence(A-I) artificial neural-networks(A-N-N) and biological neural-networks(B-N-N) and Siegel[J. Noncrystalline-Solids 40, 453(1980); Symp. on Fractals, MRS Fall-Mtg., Boston(1989)-5-papers; Symp. on Scaling, (1990); Symp. on Transport in Geometric-Constraint (1990)

Rosen, Charles; Carl-Ludwig Siegel, Edward; Feynman, Richard; Wunderman, Irwin; Smith, Adolph; Marinov, Vesco; Goldman, Jacob; Brine, Sergey; Poge, Larry; Schmidt, Erich; Young, Frederic; Goates-Bulmer, William-Steven; Lewis-Tsurakov-Altshuler, Thomas-Valerie-Genot

2013-03-01

240

CARMENES. IV. Preliminary low-resolution spectroscopic characterisation  

NASA Astrophysics Data System (ADS)

Our project consists in the characterisation of M dwarfs to define the input catalogue of CARMENES, a next-generation instrument to be built for the 3.5 m telescope at Calar Alto. We have used the CAFOS spectrograph at the 2.2 m Calar Alto telescope for observing over 300 stars from our initial sample with a spectral resolution R ˜ 1500. We have performed a spectral-type classification of the targets by comparing their acquired spectra with those of spectral-type standard stars observed during the same observing runs, and using spectral indices well calibrated for M dwarfs, such as TiO5, CaH2 and CaH3. We have also derived chromospheric activity indicators (e.g. H?). Our final goal will be to choose the best candidates to be observed with this future exoplanet hunter and prepare the CARMENCITA (CARMENES Cool star Information and daTa Archive) database.

Alonso-Floriano, F. J.; Montes, D.; Caballero, J. A.; Klutsch, A.; Morales, J. C.; Mundt, R.; Ribas, I.; Reiners, A.; Quirrenbach, A.; Amado, P. J.; Carmenes Consortium

2013-05-01

241

Spectroscopic Confirmation of Nova Candidates in M31  

NASA Astrophysics Data System (ADS)

We report on the spectroscopic confirmation of four recent optical nova candidates in M31 using the 2.2 m telescope and the Calar Alto Faint Object Spectrograph CAFOS at CAHA on Calar Alto, Spain. The spectra covered the range 400-850 nm (G-200), 490-780 nm (G-100) and 320-580 nm (B-100). The outburst of the apparent nova M31N 2006-06a (RA=00:43:11.81, dec= +41:13:44.7 (J2000)) occurred between May 12 and May 22, 2006 with an R band magnitude of 17.6 and white light magnitude of 18.0 at maximum (ATel #821, http://cfa-www.harvard.edu/iau/CBAT_M31.html , and ATel #844).

Pietsch, W.; Burwitz, V.; Greiner, J.; Rau, A.; Sala, G.; Bender, R.; Fliri, J.; Riffeser, A.; Seitz, S.; Alises, M.; Aguirre, A.; Cardiel, N.; Hoyo, F.

2006-07-01

242

Petrogenesis of basalt-comendite and basalt-pantellerite suites, Terceira, Azores, and some implications for the origin of ocean-island rhyolites  

Microsoft Academic Search

Petrogenetic modeling of the Recent lava succession of Santa Barbara and Pico Alto volcanoes and associated basaltic lavas\\u000a indicates that there are two discrete lava series present, one erupted from the axial rift linking the two central volcanoes\\u000a and one associated with monogenetic cones scattered around the flanks of Santa Barbara. The felsic lavas of both volcanoes\\u000a are peralkaline and

J. E. Mungall; R. F. Martin

1995-01-01

243

Transformational and derivational strategies in analogical problem solving  

Microsoft Academic Search

Analogical problem solving is mostly described as transfer of a source solution to a target problem based on the structural\\u000a correspondences (mapping) between source and target. Derivational analogy (Carbonell, Machine learning: an artificial intelligence\\u000a approach Los Altos. Morgan Kaufmann, 1986) proposes an alternative view: a target problem is solved by replaying a remembered problem-solving episode. Thus, the experience\\u000a with the

Sven-Eric Schelhorn; Jacqueline Griego; Ute Schmid

2007-01-01

244

Coordinated F Region Measurements of Thermospheric Horizontal Neutral Winds and Ionospheric Scintillations and Drifts at a Low-Latitude Site  

Microsoft Academic Search

Measurements of thermospheric horizontal neutral winds were made with a Fabry-Perot Interferometer (FPI) in Carmen Alto, Chile (23.1° S, 69.4° W, -10.2° dip), during July-October 1997. During the same period, in Antofagasta, Chile (23.43° S, 70.6° W, -10.29° dip), UHF scintillation and zonal irregularity drifts were obtained using two geostationary satellites. The proximity of these two ground sites, located on

R. S. Indiresan; R. J. Niciejewski; B. E. Gilchrist; K. M. Groves; J. Araya

2001-01-01

245

Drug Treatment Clients and Their Community Peers: How They Differ  

Microsoft Academic Search

Free-at-Last is a drug treatment program in East Palo Alto, California, a low-income predominantly African American community in Silicon Valley. In this research, a cohort of treatment clients was compared to a random sample of community residents. Both groups used drugs. Two-way analysis of variance was used to identify factors that predicted the number of drugs used, controlling for client

Benjamin P. Bowser; David Lewis; Derrick Dogan; Carl Word

2010-01-01

246

Comet P/Shoemaker-Levy 9 (SL-9) Impact Images  

NSDL National Science Digital Library

The National Space Science Data Center (NSSDC) at NASA's Goddard Space Flight Center has announced availability of the latest Comet P/Shoemaker-Levy 9 (SL-9) impact images taken by the Hubble Space Telescope, Keck telescope, Calar Alto, European Southern, La Palma, MSSSO, etc. NSSDC staff has gathered close to 200 observations and associated results from around the world. The server has been accessed over 340,000 times.

247

Nuevo estudio relaciona a los índices de utilización de servicios de atención médica más que a la biología con las desigualdades en salud por cáncer colorrectal  

Cancer.gov

Los índices más altos de incidencia y mortalidad por cáncer colorrectal que experimentan los afroamericanos pueden deberse principalmente a las diferencias en la utilización de servicios médicos y en menor proporción a la biología, según un nuevo estudio dirigido por investigadores del NCI. Índices más bajos de seguimiento podrían resultar en un retraso del diagnóstico y de tratamiento y en un aumento de la mortalidad.

248

Evolución en Núcleos Activos de Galaxias y QSOs I. Relación Starbursts y AGNs en Galaxias Próximas  

NASA Astrophysics Data System (ADS)

We have started a new part of our program: ``Study of Evolution of AGNs & QSOs''. This new part is mainly a study of the relation between Starbursts and AGNs-QSOs in nearby galaxies (using our model of Evolutive, Composite & Explosive AGNs-QSOs). In particular, we have started spectrophotometric and imaging observations at CASLEO, Bosque Alegre, Gemini, Calar Alto, etc. This study also includes the analysis of Archive Data. Here we show our first results for NGC 1097. FULL TEXT IN SPANISH

Lípari, S.; Merlo, D.; Moyano, M.

249

Human-induced changes on wetlands: a study case from NW Iberia  

Microsoft Academic Search

Wetlands are exceptional ecosystems that contribute to biodiversity and play a key role in the hydrological and carbon cycles. Knowledge of their long-term ecology is essential for a proper understanding of these valuable ecosystems. We present the application of multi-proxy analyses to a 115 cm-thick core from La Molina mire (Alto de la Espina) located in NW Iberia, with a

Lourdes López-Merino; Antonio Martínez Cortizas; José Antonio López-Sáez

2011-01-01

250

Human-induced changes on wetlands: a study case from NW Iberia  

Microsoft Academic Search

Wetlands are exceptional ecosystems that contribute to biodiversity and play a key role in the hydrological and carbon cycles. Knowledge of their long-term ecology is essential for a proper understanding of these valuable ecosystems. We present the application of multi-proxy analyses to a 115 cm-thick core from La Molina mire (Alto de la Espina) located in NW Iberia, with a chronology

Lourdes López-Merino; Antonio Martínez Cortizas; José Antonio López-Sáez

2011-01-01

251

PYRAMIR: Exploring the On-Sky Performance of the World's First Near-Infrared Pyramid Wavefront Sensor  

Microsoft Academic Search

This paper presents the on-sky performance of the unmodulated infrared pyramid wavefront sensor PYRAMIR mounted on the ALFA adaptive optics system at the 3.5 m telescope of the Calar Alto Observatory. The performance of the system is compared with the performance of the Shack-Hartmann wavefront sensor of the ALFA system. We carried out a series of measurements to characterize the

D. Peter; M. Feldt; T. Henning; S. Hippler; J. Aceituno; L. Montoya; J. Costa; B. Dorner

2010-01-01

252

TrES-2b multi-band transit observations (Mislis+, 2010)  

NASA Astrophysics Data System (ADS)

The OLT data were taken on 11 April 2009 using a 3Kx3K CCD with a 1x1 FOV and an I-band filter as in our previous observing run (Paper I, Mislis & Schmitt, 2009, Cat. ). The Calar Alto data were taken on 28 May 2009 using BUSCA and the 2.2m telescope. (1 data file).

Mislis, D.; Schroeter, S.; Schmitt, J. H. M. M.; Cordes, O.; Reif, K.

2010-02-01

253

Photometric follow-up of transiting exoplanets with the INTA-CAB robotic telescope  

NASA Astrophysics Data System (ADS)

We present some photometric results obtained by our group as part of a photometric follow-up of transiting exoplanets carried out with the INTA-CAB 50-cm robotic telescope at Calar Alto Observatory (Almería, Spain). We show light curves of WASP-10, HATP-20 and HATP-32 and, after that, we fit our results with theoretical models in order to obtain some parameters as the central times of transits, depths and the transit durations of this extrasolar planets.

Ullán, A.; Eibe, M. T.; Cuesta, L.; Pérez-Verde, A.; Navas, J.

2013-05-01

254

Recent evolutionary diversification of a protist lineage  

Microsoft Academic Search

Summary Here, we have identified a protist (dinoflagellate) lineage that has diversified recently in evolutionary terms. The species members of this lineage inhabit cold-water marine and lacustrine habitats, which are distributed along a broad range of salinities (0-32) and geographic distances (0-18 000 km). Moreover, the species present different degrees of morphologi- cal and sometimes physiological variability. Alto- gether, we

Ramiro Logares; Niels Daugbjerg; Andrés Boltovskoy; Anke Kremp; Johanna Laybourn-Parry; Karin Rengefors

2008-01-01

255

The bimodal rift-related Juscelândia volcanosedimentary sequence in central Brazil: Mesoproterozoic extension and Neoproterozoic metamorphism  

Microsoft Academic Search

The Barro Alto Complex and Juscelândia volcanosedimentary sequence are exposed in the central part of the Neoproterozoic Brasília belt of central Brazil. The former is a large (approximately 150km long), boomerang-shaped, mafic-ultramafic, layered complex formed by two different intrusions metamorphosed under granulite facies. These rocks are tectonically overlain by rocks of the Juscelândia volcanosedimentary sequence, represented mainly by biotite-gneiss and

Renato Moraes; Reinhardt A. Fuck; Márcio Martins Pimentel; Simone M. C. L. Gioia; Maria H. B. M. de Hollanda; Richard Armstrong

2006-01-01

256

Microarray analysis of altered gene expression in murine fibroblasts transformed by nickel(II) to nickel(II)-resistant malignant phenotype  

Microsoft Academic Search

B200 cells are Ni(II)-transformed mouse BALB\\/c-3T3 fibroblasts displaying a malignant phenotype and increased resistance to Ni(II) toxicity. In an attempt to find genes whose expression has been altered by the transformation, the Atlas Mouse Stress\\/Toxicology cDNA Expression Array (Clontech Laboratories, Inc., Palo Alto, CA) was used to analyze the levels of gene expression in both parental and Ni(II)-transformed cells. Comparison

Renata. Kowara; Aldona Karaczyn; Robert Y. S. Cheng; Konstantin Salnikow; Kazimierz S. Kasprzak

2005-01-01

257

Non-steady long-term uplift rates and Pleistocene marine terrace development along the Andean margin of Chile (31°S) inferred from 10Be dating  

Microsoft Academic Search

Pleistocene uplift of the Chilean coast is recorded by the formation of wave-cut platforms resulting from marine erosion during sea-level highstands. In the Altos de Talinay area (~31°S), we have identified a sequence of 5 wave-cut platforms. Using in situ produced 10Be exposure ages we show that these platforms were formed during interglacial periods at 6, 122, 232, 321 and

M. Saillard; S. R. Hall; L. Audin; D. L. Farber; G. Hérail; J. Martinod; V. Regard; R. C. Finkel; F. Bondoux

2009-01-01

258

Control del cáncer y salud mundial: noticia del Instituto Nacional del Cáncer (NCI)  

Cancer.gov

En combinación con una reunión de alto nivel de las Naciones Unidas sobre enfermedades no transmisibles en países en vías de desarrollo, el doctor Harold Varmus, director del NCI, y el doctor Ted L. Trimble, del NCI, han publicado un comentario en Science Translational Medicine sobre “La integración del control del cáncer en la salud mundial" (Integrating Cancer Control into Global Health).

259

The use of vegetation in assessing the productivity of forest lands  

Microsoft Academic Search

\\u000a Resumen  Los principios básicos al empleo de tipos de vegetación en el evaluar de terreno forestál están enumerados y descutidos. (1)\\u000a La vegetación refleja la suma de todos los elementos del medio ambiente que son importantes para las plantas. (2) Las especies\\u000a con poderes en competencia más altos son las indicadores mejores. (3) Los bosques consisten en grupos (“unions”) sobrepuestos\\u000a que

R. Daubenmire

1976-01-01

260

16 -Bromoepiandrosterone, an Antimalarial Analogue of the Hormone Dehydroepiandrosterone, Enhances Phagocytosis of Ring Stage Parasitized Erythrocytes: a Novel Mechanism for Antimalarial Activity  

Microsoft Academic Search

Dehydroepiandrosterone (DHEA) and DHEA-sulfate (DHEA-S), which are the most abundant hormones secreted by the adrenal cortex and are present in plasma at approximately 6 M, as well as their analogue, 16-bromoepiandrosterone (EPI), exerted antimalarial activities against two chloroquine-sensitive Plasmo- dium falciparum strains (Palo Alto, 50% inhibitory concentration (IC50) of EPI, 4.8 0.68 M; T996\\/86, IC50 of EPI, 7.5 0.91 M,

Kodjo Ayi; Giuliana Giribaldi; Aleksei Skorokhod; Evelin Schwarzer; Patrick T. Prendergast; Paolo Arese

2002-01-01

261

Drainage and reclamation of salt-affected soils in the bardenas area, Spain  

Microsoft Academic Search

Chapter 1The Ebro basin is situated in north-eastern Spain and forms a geographic unit bounded by high mountains. The Bardenas area lies in the Ebro basin and forms part of the Bardenas Alto - Aragón irrigation scheme, which was designed to make use of the surface water resources from the Pyrenees.Chapter 2The Ebro basin is a tertiary sedimentation basin in

J. Martinez Beltran

1978-01-01

262

New books in review  

Microsoft Academic Search

THE VERBAL ICON; Studies in the Meaning of Poetry. By William Kurtz Wimsatt, Jr. Lexington: University of Kentucky Press, 1954. pp. xviii+299. $4.00.THEORY OF PROSODY IN EIGHTEENTH?CENTURY ENGLAND. By Paul Fussell, Jr. Connecticut College Monograph No. 5. New London, Connecticut: Connecticut College, 1954; pp. x+170. $3.50.PERMANENCE AND CHANGE, AN ANATOMY OF PURPOSE. By Kenneth Burke. (Revised Edition). Los Altos, California:

Wallace A. Bacon; Charlotte Lee; Marie Hochmuth; Ray Nadeau; Owen M. Peterson; Hollis L. White; Arthur L. Woehl; James L. Jackson; Albert E. Johnson; Joseph D. Batcheixer; E. J. West; Richard Woellhaf; Henry L. Mueller; Willard Bellman; William R. Gondin; Elwood Murray; Wilhelmina G. Hedde; Lester L. Hale; George P. Rice Jr; Arleigh B. Williamson; Harold P. Zelko; Lindsay S. Perkins; S. J. Crandell; Martin Maloney; Kenneth Harwood; Ross Scanlan; Milton Dickens; Franklyn S. Haiman

1954-01-01

263

Characterization of pulmonary nodules and mediastinal staging of bronchogenic carcinoma with F-18 fluorodeoxyglucose positron emission tomography  

Microsoft Academic Search

Objective: To evaluate F-18 fluorodeoxyglucose positron emission tomography (PET) in terms of its sensitivity and specificity in diagnosing malignant pulmonary nodules and staging bronchogenic carcinoma. Methods: A retrospective review of any patient that presented to the VA Palo Alto Health Care System with a pulmonary nodule between 9\\/94 and 3\\/96 revealed 49 patients (four female, 45 male) age 37–85 (mean

Robert C Hagberg; George M Segall; Paul Stark; Thomas A Burdon; Mario F Pompili

1997-01-01

264

PRODUÇÃO E COMERCIALIZAÇÃO DA CASTANHA DO BRASIL (BERTHOLLETIA EXCELSA, H.B.K) NO ESTADO DO ACRE BRASIL, 1998-2006  

Microsoft Academic Search

A castanha do brasil (Bertholletia excelsa, H.B.K.), é uma planta nativa da Amazônia, sendo uma das mais importantes espécies de exploração extrativista. Suas amêndoas apresentam alto valor econômico, tornando-se uma das principais atividades econômicas na região amazônica. O presente estudo teve como objetivo fazer um levantamento da produção e comercialização da castanha-do-brasil no Estado do Acre, n o período de

Lilliane Martins; Zenobio Perelli Gouveia E Silva; Breno Carrillo Silveira

2008-01-01

265

Bplans.com Sample Business Plans  

NSDL National Science Digital Library

Created by Palo Alto Software, Bplans.com offers this collection of Sample Business Plans to help small and medium-sized businesses reach their financial goals. Exemplary company histories, mission statements, sales objectives, and product descriptions are available in addition to advice on business start ups, marketing, and "Cash v. Profit"--a real-life illustration of typical financial pitfalls. Users may also benefit from an annotated list of business planning links.

266

Reviews and abstracts  

Microsoft Academic Search

Ard, Ben N. Jr. and Ard, Constance C. (Eds.). Handbook of Marriage Counseling. Palo Alto, Calif.: Science and Behavior Books, Inc., 1969. xviii and 474 pages. Price $12.95.Himes, Norman E. Medical History of Contraception. Medical foreword by Robert Latou Dickinson, M.D.; New preface by Christopher Tietze, M.D. New York: Schocken Books (Paperback), 1970, 521 pages, $3.45.Karlen, Arno. Sexuality and Homosexuality.

Hugo G. Beigel; Edward Sagarin; A. Gus Woltman

1971-01-01

267

Seasonal impact of natural and anthropogenic emissions on the highest glacier of the Eastern European Alps  

Microsoft Academic Search

In June 2009, we conducted the first extensive glaciological survey of Alto dell'Ortles, the uppermost glacier of Mt. Ortles which at 3905 meters above sea level (m a.s.l.) is the highest summit of the Eastern European Alps. We analyzed snow samples collected from a 4.5 m snow-pit at 3830 m a.s.l. Here, we present a comprehensive data set including a

J. Gabrieli; L. Carturan; P. Gabrielli; C. Turetta; N. Kehrwald; G. Cozzi; H. Staffler; R. Dinale; R. Seppi; G. Dalla Fontana; L. Thompson; C. Barbante

2011-01-01

268

Impact of Po Valley emissions on the highest glacier of the Eastern European Alps  

Microsoft Academic Search

In June 2009, we conducted the first extensive glaciological survey of Alto dell'Ortles, the uppermost glacier of Mt. Ortles (3905 m a.s.l.), the highest summit of the Eastern European Alps. This section of the Alps is located in a rain shadow and is characterized by the lowest precipitation rate in the entire Alpine arc. Mt. Ortles offers a unique opportunity

J. Gabrieli; L. Carturan; P. Gabrielli; N. Kehrwald; C. Turetta; G. Cozzi; A. Spolaor; R. Dinale; H. Staffler; R. Seppi; G. Dalla Fontana; L. Thompson; C. Barbante

2011-01-01

269

Q-sort definition of ego identity status  

Microsoft Academic Search

Four Q-sort profiles of the ego identity statuses were developed to provide empirical definition and analysis of the statuses and Q-sort templates for status assignment by correlation with individual personality profiles. Ten expert judges used the California Q-set (Block, [1978];The Q-Sort Method in Personality Assessment and Psychiatric Research, Consulting Psychologists Press, Palo Alto, CA [originally published 1961]) to describe the

Mary E. Mallory

1988-01-01

270

Student Recital (Nov. 18, 2011)  

Microsoft Academic Search

Etude XXXI \\/ Garwood Whaley Daniel Maloney, timpani\\u000aVa godendo \\/ George Frideric Handel Mary Sanker, soprano\\u000aKiss the Air \\/ Scott Alan Samuel Lathrop, tenor\\u000aSonata \\/ Bernhard Heiden III. Adagio – Presto Chelsea Fisk, alto saxophone\\u000aConcerto in A minor BWV 1041 \\/ Johann Sebastian Bach I. Allegro moderato Carla Mason, violin\\u000aCello Suite No. 1, BWV 1007

Susan Blazejewski; Stuart Cabral; Diane Card; Angela Chan; Mi Choe; James Davidson; Nicole Desmarais; Chelsea Fisk; Meghan Foley; Samuel Lathrop; Daniel Maloney; Carla Mason; Richard Moran; Nick Rice; Mary Sanker; Joseph Steinkrauss; James-ace Thackston; Ian Timpany

2011-01-01

271

Study of Pre-Main Sequence Stars Born in LDN 1251  

NASA Astrophysics Data System (ADS)

We observed the spectra of H? emission stars in the molecular cloud L1251 using the CAFOS spectrograph on the 2.2 m telescope of Calar Alto Observatory. We found 7 pre-main sequence stars born in the cloud and determined their spectral and luminosity classes. These spectroscopic data, supplemented with near-infrared (JHK) magnitudes allowed us to place these stars in the HR diagram. This paper discusses the evolutionary status of star formation in LDN 1251.

Eredics, M.; Kun, M.

2003-01-01

272

Overview of Lockheed Martin cryocoolers  

Microsoft Academic Search

Lockheed Martin’s Advanced Technology Center (LM-ATC) in Palo Alto, California, has been active in space cryogenic developments for over 30 years. In prior years, work focused on stored cryogen systems for temperatures up to 125K. As the mechanical cryocoolers matured and demonstrated reliable operation these stored cryogen systems gradually became replaced. LM-ATC is currently developing solid hydrogen systems for temperatures

T. Nast; J. Olson; P. Champagne; B. Evtimov; D. Frank; E. Roth; T. Renna

2006-01-01

273

WHOLE-BRAIN RADIOTHERAPY WITH SIMULTANEOUS INTEGRATED BOOST TO MULTIPLE BRAIN METASTASES USING VOLUMETRIC MODULATEDARC THERAPY  

Microsoft Academic Search

Purpose: Volumetric modulated arc therapy (RapidArc (RA); Varian Medical Systems, Palo Alto, CA) allows for the generation ofintensity-modulated dose distributions by use of a single gantry rotation. We used RA to plan and deliver whole-brain radiotherapy (WBRT) with a simultaneous integrated boost in patients with multiple brain metastases. Methods and Materials: Composite RA plans were generated for 8 patients, consisting

FRANK J. LAGERWAARD; ELLES A. P. VAN DER HOORN; W ILKO F. A. R. VERBAKEL; A. HAASBEEK

274

Optical observations of Northern Hemisphere Blazars: Results from a long campaign  

NASA Astrophysics Data System (ADS)

In this work, results from an optical flux monitoring campaign (V and R filters) of northern hemisphere blazars are presented. The observations were made using the 1.52m telescope at the Calar Alto Observatory, Spain, during 2006 and 2007. A total of 10 objects were followed in different observing runs. Significant intranight (hour-based scale) variability was not detected in any object of this sample. However, internight (day-based scale) variability was indeed detected in some of the sources.

Marchesini, E. J.; Zibecchi, L.; Andruchow, I.; Cellone, S. A.; Combi, J. A.; Romero, G. E.; Martí, J.; Luque-Escamilla, P.; Muñoz-Arjonilla, A. J.; Sánchez-Sutil, J. R.

275

Family Perspectives on the Quality of Pediatric Palliative Care  

Microsoft Academic Search

Background: As a prelude to establishing a Pediatric Palliative Care Program, we solicited information from families about their experiences and their suggestions for improving the quality of end-of-life care. Participants were English- and Spanish-speaking family members of de- ceased pediatric patients who received care at Lucile Salter Packard Children's Hospital, Stanford University Medi- cal Center, Palo Alto, Calif. Methods: Sixty-eight

Nancy Contro; Judith Larson; Sarah Scofield; Barbara Sourkes; Harvey Cohen

2002-01-01

276

First results from the ALHAMBRA-Survey  

Microsoft Academic Search

We present the first results from the ALHAMBRA survey. ALHAMBRA will cover a\\u000arelatively wide area (4 square degrees) using a purposely-designed set of 20\\u000amedium-band filters, down to an homogeneous magnitude limit AB~25 in most of\\u000athem, adding also deep near-infrared imaging in JHK. To this aim we are using\\u000athe Calar Alto 3.5m telescope. A small area of

A. Fernandez-Soto; J. A. L. Aguerri; E. J. Alfaro; N. Benitez; T. Broadhurst; J. Cabrera-Caño; F. J. Castander; J. Cepa; M. Cerviño; D. Cristobal-Hornillos; R. M. Gonzalez Delgado; L. Infante; I. Marquez; V. J. Martinez; J. Masegosa; A. del Olmo; J. Perea; F. Prada; J. M. Quintana; S. F. Sanchez

2008-01-01

277

Petrogenesis of basalt-comendite and basalt-pantellerite suites, Terceira, Azores, and some implications for the origin of ocean-island rhyolites  

NASA Astrophysics Data System (ADS)

Petrogenetic modeling of the Recent lava succession of Santa Barbara and Pico Alto volcanoes and associated basaltic lavas indicates that there are two discrete lava series present, one erupted from the axial rift linking the two central volcanoes and one associated with monogenetic cones scattered around the flanks of Santa Barbara. The felsic lavas of both volcanoes are peralkaline and appear to be derived from associated basalts by fractional crystallization of an assemblage including essential amphibole. Trace element abundances in the felsic lavas, particularly those of Sr and REE, cannot be reconciled with an origin through partial melting of basaltic material at the base of the volcanic pile. The difference between the comenditic and pantelleritic differentiation trends of Santa Barbara and Pico Alto is attributed primarily to FO2 control of the crystallizing assemblage, probably related to thermal dissociation of magmatic water in the Santa Barbara magma chamber. This effect may be augmented by minor differences in parent basaltic compositions, the Pico Alto pantellerites being derived from the rift basalts whereas the Santa Barbara comendites are derived from the off-rift basalts. A compositional gap between 54 and 64% silica content in the lavas is not present if the suite is extended to include co-magmatic hypabyssal xenoliths, leading to the inference that the gap in this and other bimodal suites results solely from a relative inability of magma of intermediate composition to erupt.

Mungall, J. E.; Martin, R. F.

1995-02-01

278

HS0702+6043 - A new large amplitude sdB variable at the cool end of the instability region  

NASA Astrophysics Data System (ADS)

We report on time series photometry of hot sdB stars from the Hamburg Schmidt survey carried out at the Calar Alto 1.23 m and 2.2 m telescopes. Among 14 spectroscopically selected candidates we detected oscillations in the sdB star HS0702+6043 with a period of 363 s and an amplitude of 29 mmag which is among the largest amplitude observed in sdBV stars. A second period of 382 s with a significantly smaller amplitude (3.8 mmag) might be present. Our NLTE model atmosphere analysis of the time-averaged optical spectra, obtained at the Calar Alto 3.5 m telescope, indicates that HS0702+6043 has Teff=28 400 K and log g=5.35. This places the star at the cool end of the theoretical sdBV instability strip (EC 14026 stars). Among the other thirteen sdB stars we confirmed the variablity of the previously discovered sdBV HS0815+4243 and identified twelve stars to be stable, for which we give upper limits for light variations. Based on observations collected at the German-Spanish Astronomical Center, Calar Alto, operated by the Max-Planck-Institut für Astronomie Heidelberg jointly with the Spanish National Commission for Astronomy.

Dreizler, S.; Schuh, S. L.; Deetjen, J. L.; Edelmann, H.; Heber, U.

2002-04-01

279

Changes in stream chemistry and nutrient export following a partial harvest in the Catskill Mountains, New York, USA  

USGS Publications Warehouse

Clearcut forest harvesting typically results in large changes in stream water chemistry in northeastern North America. The effects of partial forest harvests on stream chemistry have not received as much attention, even though partial cutting is a more common forestry practice than clearcutting in this region. Changes in stream water chemistry following a partial cut are reported here from a 10 ha study catchment in a northern hardwood forest in the Catskill Mountains of southern New York, and are compared to those of a nearby 48 ha reference catchment. The lower two thirds of the treatment catchment was harvested in February-April 2002 by a shelterwood method, such that 33% of the basal area of the catchment was removed. Stream NO3-, NH4+, Ca2+, K+, and total dissolved aluminum (Alto) concentrations increased significantly after the harvest. Stream Ca2+, Mg2+ and NH4+ concentrations peaked 5 months after the initiation of the harvest, NO 3- and K+ concentrations peaked 6 months after cutting, and Alto concentrations peaked 1 year after cutting. Streamflow was not significantly affected by the harvest when compared to the flow of three nearby streams. Export of NO3- in stream water increased five-fold the year after the cut, and briefly exceeded atmospheric inputs of inorganic nitrogen during 4 months in the fall of 2002. Changes in stream NO3- and K+ concentrations were less than predicted by the relative basal area removed compared with those of a recent nearby clearcut. In contrast, changes in Ca2+, Mg 2+ and Alto concentrations were approximately proportional to basal area removal in these two cuts. Stream chemistry returned to values close to those of the pre-cut period and to reference values by early spring of 2003, just over a year after the initiation of the harvest, except for NO 3- concentrations, which remained elevated above background 18-20 months after completion of the cut.

Wang, X.; Burns, D. A.; Yanai, R. D.; Briggs, R. D.; Germain, R. H.

2006-01-01

280

Radial velocities of blue stragglers in the old open cluster NGC 7789  

NASA Astrophysics Data System (ADS)

NGC 7789 is a populous, old galactic cluster with a large number of blue stragglers. In an attempt to determine the stellar parameters of as many of these objects as possible in order to unravel their origin, the brighter blue stragglers of NGC 7789 were observed with the 4-meter echelle spectrograph at Kitt Peak and the 2.2-meter coude spectrograph at Calar Alto. This paper reports on the determination of radial velocities from these high resolution spectra. The results are compared with the previous radial velocity studies of Strom and Strom (1970) and Stryker and Hrivnak (1984).

Drilling, J. S.; Schoenberner, D.

281

Verification of dose volume histograms in stereotactic radiosurgery and radiotherapy using polymer gel and MRI  

NASA Astrophysics Data System (ADS)

In this work we focus on dose volume histograms (DVHs) measurement in stereotactic radiosurgery (SR) performed with the Leksell gamma knife (ELEKTA Instrument AB, Stockholm, Sweden) and stereotactic radiotherapy (SRT) performed with linear accelerator 6 MV Varian Clinac 2100 C/D (Varian Medical Systems, Palo Alto, USA) in conjunction with BrainLAB stereotactic system (BrainLAB, Germany) using modified BANG gel and magnetic resonance imaging (MRI). The aim of the experiments was to investigate a method for acquiring entire dose volume information from irradiated gel dosimeter and calculate DVHs.

Šemnická, Jitka; Novotný, Josef, Jr.; Sp?vá?ek, Václav; Gar?ic, Jirí; Steiner, Martin; Judas, Libor

2006-12-01

282

Early Experiences with Personal Health Records  

PubMed Central

Over the past year, several payers, employers, and commercial vendors have announced personal health record projects. Few of these are widely deployed and few are fully integrated into ambulatory or hospital-based electronic record systems. The earliest adopters of personal health records have many lessons learned that can inform these new initiatives. We present three case studies—MyChart at Palo Alto Medical Foundation, PatientSite at Beth Israel Deaconess Medical Center, and Indivo at Children’s Hospital Boston. We describe our implementation challenges from 1999 to 2007 and postulate the evolving challenges we will face over the next five years.

Halamka, John D.; Mandl, Kenneth D.; Tang, Paul C.

2008-01-01

283

Protolith and metamorphic ages of gneiss hosting eclogite in the Chuacús complex, Central Guatemala  

NASA Astrophysics Data System (ADS)

Epidote-amphibolite-facies gneisses in the Sierra de Chuacús, Central Guatemala, contain mafic domains with relics of eclogite-facies mineral parageneses. Field relations and petrography suggest that the protolith of orthogneiss was intruded by mafic dikes, subsequently subjected to eclogite-facies conditions, and finally strongly overprinted at epidote-amphibolite conditions. The host orthogneiss for an eclogitic band ca. 1m thick in the Agua Caliente River, and a quartz-pyroxene-garnet-zoisite gneiss from Los Altos were sampled for zircon SHRIMP-RG U/Pb dating and REE analyses. Cathodoluminescence images, Th/U, U/Pb and REE patterns of Agua Caliente gneiss zircon cores indicate magmatic crystallization between 217-229 Ma. Magmatic zircon cores of the Los Altos sample have similar texture, Th/U and REE, and yield 220-245 Ma ages. Coeval migmatite formation has been reported near Huehuetenango, Western Guatemala, suggesting extensive Triassic crustal melting and plutonism at the southern edge of the Maya block. A second population of Los Altos zircon cores show metamorphic textures with ages between 840-900Ma, suggesting a connection to Neoproterozoic orthogneisses in the northern flank of the Sierra de Chuacús. Bright CL metamorphic zircon rims from Chuacús gneiss contain low U (<60 ppm), and yield a weighted mean U238/Pb206 age of 75+/- 3Ma (n=7). Ages in the 217-80 Ma interval do not form clusters and are compatible with partial recrystallization of magmatic zircon or mixed analysis. Zircon rims of Los Altos gneiss show lower REE than magmatic cores, and steep heavy REE patterns. Zircon rims of Agua Caliente orthogneiss show less steep heavy REE patterns suggestive of growth in equilibrium with garnet, and are enriched in light REE. Eu anomalies in REE patterns indicate that cores and rims grew stable with plagioclase at crustal depth. This implies the ca.75 Ma metamorphic age represents the epidote-amphibolite overprint, and constrains the high-pressure event to have occurred after the Triassic and before the Late Cretaceous.

Martens, U.; Mattinson, C. G.; Wooden, J.; Liou, J. G.

2007-05-01

284

Characterization and performance of the 4k x 4k Hawaii-2RG Mosaic for PANIC  

NASA Astrophysics Data System (ADS)

PANIC, the PAnoramic Near-Infrared Camera for Calar Alto, is one of the next generation instruments for this observatory. In order to cover a field of view of approximately 30 arcmin, PANIC uses a mosaic of four 2k x 2k HAWAII-2RG arrays from Teledyne. This document presents the preliminary results of the basic characterization of the mosaic. The performance of the system as a whole, as well as the in-house readout electronics and software capabilities will also be briefly discussed.

Naranjo, Vianak; Mall, Ulrich; Ramos, José Ricardo; Storz, Clemens; Wagner, Karl; Alter, Matthias; Baumeister, Harald; Bizenberger, Peter; Cárdenas, M. C.; Fernández, Matilde; Fried, Josef W.; García Segura, Antonio J.; Helmling, Jens; Huber, Armin; Ibáñez Mengual, J. M.; Laun, Werner; Lenzen, Rainer; Rodríguez Gómez, Julio F.; Rohloff, Ralf-Rainer

2010-07-01

285

Holmium:YAG laser coronary angioplasty in acute myocardial infarction  

NASA Astrophysics Data System (ADS)

Patients who sustain complicated acute myocardial infarction in whom thrombolytic agents either fail or are contraindicated often need mechanical revascularization other than PTCA. In 24 patients with acute infarction complicated by continuous chest pain and ischemia who either received lytics or with contraindication to lytics, a holmium:YAG laser (Eclipse Surgical Technologies, Palo Alto, CA) was utilized for thrombolysis and plaque ablation. Clinical success was achieved in 23/24 patients, with 23 patients (94%) surviving the acute infarction. Holmium:YAG laser is very effective and safe in thrombolysis and revascularization in this complicated clinical setting.

Topaz, On; Luxenberg, Michael; Schumacher, Audrey

1994-07-01

286

Merozoite surface coat precursor protein completely protects Aotus monkeys against Plasmodium falciparum malaria.  

PubMed Central

Groups of Aotus (owl) monkeys were immunized with either the Plasmodium falciparum merozoite surface-coat precursor protein and its processing fragments or a complex of high molecular mass rhoptry proteins and challenged with a lethal infection of the homologous P. falciparum Uganda Palo Alto (FUP) strain. No patent parasitemia could be detected on thick blood films of monkeys immunized with the merozoite surface antigens; however, only one of three monkeys immunized with the rhoptry proteins was partially protected, while two required drug therapy. The experiment clearly demonstrates that the merozoite surface-coat precursor protein can completely protect Aotus monkeys against a lethal infection of the human malaria parasite. Images

Siddiqui, W A; Tam, L Q; Kramer, K J; Hui, G S; Case, S E; Yamaga, K M; Chang, S P; Chan, E B; Kan, S C

1987-01-01

287

Solar Flare Physics  

NASA Astrophysics Data System (ADS)

In the extended portion of this grant (January 1-March 31, 2000), we have continued our previous efforts (January 1-December 31, 1999) in studies of Fourier imaging methods applied to hard X-ray flares. In particular, we have performed theoretical analysis of the "Forward-Fitting" method in collaboration with Dr. Markus Aschwanden, (Lockheed-Martin Palo Alto Research lab) in support of the HESSI (High Energy Solar Spectroscopic Imager) mission to enable rapid imaging of solar flares in hard X-rays.

Schmahl, Edward J.; Kundu, Mukul R.

2000-03-01

288

El consumo de tabaco y la exposición al humo de tabaco en el ambiente durante el embarazo pueden poner en peligro la salud de mujeres y niños en países en desarrollo  

Cancer.gov

Las conclusiones de un estudio del NIH indican que las tasas de consumo de tabaco durante el embarazo, así como la exposición de mujeres embarazadas y de sus niños al humo de tabaco en el ambiente constituyen amenazas significativas para la salud en varios países de ingresos medios y bajos. En unos pocos de los países en donde se tomaron las muestras, incluso algunos de América Latina, los índices de exposición al humo de tabaco probablemente ya son lo suficientemente altos como para justificar una preocupación considerable.

289

Psychotherapeutic intervention by telephone  

PubMed Central

Psychotherapy conducted over the telephone has received increasing amounts of empirical attention given practical advantages that side-step treatment barriers encountered in traditional office-based care. The utility and efficacy of telephone therapy appears generalizable across diverse clinical populations seeking care in community-based hospital settings. Treatment barriers common to older adults suggest that telephone therapy may be an efficient and effective mental health resource for this population. This paper describes empirical studies of telehealth interventions and case examples with psychotherapy conducted via telephone on the Spinal Cord Injury Unit of the Palo Alto Veterans’ Administration. Telephone therapy as appears to be a viable intervention with the aging population.

Mozer, Erika; Franklin, Bethany; Rose, Jon

2008-01-01

290

Bioluminescent Mycena species from São Paulo, Brazil.  

PubMed

Six species of bioluminescent agarics are described and illustrated from a single site in primary Atlantic Forest habitat in the Parque Estadual Turistico do Alto Ribeira, Sao Paulo State, Brazil. These include two new taxa of Mycena, viz. M. asterina and M. lucentipes. Luminescence in Mycena fera, M. singeri and M. discobasis is reported for the first time. In addition an undeterminable luminescent Mycena species is described and additional specimens of Gerronema viridilucens are documented. An accounting of known bioluminescent species of Mycena and a discussion of why they luminesce are presented. PMID:17682785

Desjardin, Dennis E; Capelari, Marina; Stevani, Cassius

291

Comparación entre los sitios de LLAMA y APEX  

NASA Astrophysics Data System (ADS)

A comparison among the meteorological condition prevailing at the location of APEX (Atacama Pathfinder Experiment) telescope and the site selected to deploy LLAMA (Long Latin American Millimeter Array) is carried out. The later is dubbed Alto Chorrillo, and is located 4800 m above sea level and around 16 km eastward from the town of San Antonio de los Cobres (province of Salta). This work is part of a long term monitoring campaign aim at selecting sites for millimeter and submillimeter radioastronomy that is being carried out by the Instituto Argentino de Radioastronomía (IAR) since 2002. FULL TEXT IN SPANISH

Bareilles, F. A.; Morras, R.; Hauscarriaga, F. P.; Guarrera, L.; Arnal, E. M.; Lepine, J. R. D.

292

Computer Science: A Historical Perspective and a Current Assessment  

NASA Astrophysics Data System (ADS)

We begin with a brief review of the early years of Computer Science. This period was dominated by large, remote computers and the struggle to master the complex problems of programming. The remedy was found in programming languages providing suitable abstractions and programming models. Outstanding was the language Algol 60, designed by an international committee, and intended as a publication language for algorithms. The early period ends with the advent of the microcomputer in the mid 1970s, bringing computing into homes and schools. The outstanding computer was the Alto, the first personal computer with substantial computing power. It changed the world of computing.

Wirth, Niklaus

293

Video-coaching as biofeedback tool to improve gated treatments: Possibilities and limitations.  

PubMed

For respiratory gated radiotherapy the manufacturers of linear accelerators offer dedicated gating technologies. The video-based Varian RPM Gating system (Varian Medical Systems, Palo Alto/CA, USA) includes in a standard configuration a support tool for regular breathing called audiocoaching. As this approach has limitations regarding direct control of the patient's breathing due to a missing feedback, we designed an additional tool offering videocoaching. In order to evaluate the impact of this additional functionality, we measured parameters defining the image quality of 4D-CT data as well as the treatment duration which is mainly influenced by the patient's limited ability to achieve a stable breathing pattern. PMID:22356943

Cossmann, Peter H

2012-02-20

294

More views on the two-career couple  

NASA Astrophysics Data System (ADS)

The Education and Human Resources Committee sponsored a panel session on “The Two-Career Couple” during the 1985 AGU Fall Meeting. Panelists were Gerard and Patricia Fryer (Hawaii Institute of Geophysics (HIG), Honolulu), Richard and Christina Scott (Acurex, Inc. and Earth Sciences Associates, Palo Alto), and Catherine Nigrini (private consultant, La Habra, Calif.). The panelists were asked to outline the stages in their personal and professional lives and to discuss the lessons they felt that they had learned and the advice that they wish others had given them. About 40 people attended the session; more than half of them were men, many of whom appeared to be mid-career professionals.

Sancetta, Connie

295

The 20 x 20 high speed microwave switches  

NASA Astrophysics Data System (ADS)

Tests were conducted at NASA Lewis Research Center to characterize the proof-of-concept matrix switches built under NASA contract by Ford Aerospace and Aeronautics Corporation at Palo Alto, California, and the General Electric Company at Valley Forge, Pennsylvania. The contract requirements and goals are tabulated along with the results of the NASA tests. Characteristics examined are bandwidth, insertion loss, ripple, switching speed, isolation, standing wave ratio (input and output), deviation from linear phase, noise figure, reconfiguration rates, spurious responses, gain compression, and third order intermodulation distortion. A brief description of the testing method and a statistical analysis of the test results for each of the switches are provided.

Saunders, A.

1984-09-01

296

A portable PIXE system for the in situ characterisation of black and red pigments in neolithic, copper age and bronze age pottery  

NASA Astrophysics Data System (ADS)

The results of the determination of the chromophoric elements in black and red pigments in ancient neolithic, copper age and bronze age pottery are presented. The measurements were carried out by using a recently developed portable PIXE system and Were performed at the Archaeological Museum of Licata (Sicily). The results confirm the presence of Manganese in black pigments of Castelluccio style pottery and indicate, for the first time, a strong presence of manganese in copper age pottery of the Serraferlicchio style, and in neolithic pottery of the Serra d'Alto style.

Pappalardo, L.

1999-04-01

297

PMS stars in the Cepheus flare region (Kun+, 2009)  

NASA Astrophysics Data System (ADS)

Spectra of 155 stars were observed using the CAFOS instrument on the 2.2m telescope of Calar Alto Observatory between 1999 August 7-11, 2004 August 10-15, 2005 September 11-14, and 2008 August 26-31. With the help of the FLWO staff (P. Berlind, M. Calkins) we acquired low-resolution optical spectra of 46 target stars with FAST, a high throughput slit spectrograph mounted on the Fred L. Whipple Observatory 1.5m telescope on Mount Hopkins, Arizona. (5 data files).

Kun, M.; Balog, Z.; Kenyon, S. J.; Mamajek, E. E.; Gutermuth, R. A.

2010-03-01

298

UBVRI surface brightness of 26 bright galaxies (Mollenhoff, 2004)  

NASA Astrophysics Data System (ADS)

26 bright spiral galaxies (Btot<12.7) with low to medium incli and without bar were exposed in UBVRI filters. The CAFOS focal reducer camera at the Calar Alto 2.2m telescope was used. The surface-brightness distributions were fitted using a 2-dimensional algorithm with corresponding functions for the disk- and bulge-structure. For the disks an exponential function was used, for the bulges a Sersic R{beta} law, with the concentration parameter {beta}=1/n as another fit variable. (3 data files).

Mollenhoff, C.

2003-11-01

299

LSBG in Arecibo HI Strip Survey (Trachternach+, 2006)  

NASA Astrophysics Data System (ADS)

The TBHD sample is based on B-band observations using with the focal reducer WWFPP at the 1.23m telescope at Calar Alto and R-band observations using CAFOS at Caha 2.2m. It contains 306 galaxies within 14.3deg2 in a region targeted at an area covered by the Arecibo HI Strip Survey. The galaxies were selected to have an apparent minimum diameter of 18-arcsec at the limiting surface brightness of approximately 25.2mag/arcsec2. (1 data file).

Trachternach, C.; Bomans, D. J.; Haberzettl, L.; Dettmar, R.-J.

2006-08-01

300

LAPhysics.com â Mr. RandallâÂÂs Physics Handouts  

NSDL National Science Digital Library

Physics teacher Adam Randall from Los Altos (California) High School, has prepared and placed online his handouts for his physics classes. These handouts are intended for high school students, but would make an excellent resource for introductory college physics courses as well. On this site, visitors will find handouts and worksheets (in both .pdf and .doc) on vector analysis, electrostatics, waves and sound energy, kinematics, and commonly used equations in physics. There are also two PowerPoint presentations discussing the reasons for experimentation and definitions of kinematics. The worksheets, handouts, and presentations are ready-made lesson plans for physics educators.

Randall, Adam

2007-04-18

301

SDSS J150634.27+013331.6: the second compact elliptical galaxy in the NGC 5846 group  

NASA Astrophysics Data System (ADS)

We report the discovery of the second compact elliptical (cE) galaxy SDSS J150634.27+013331.6 in the nearby NGC 5846 group by the Virtual Observatory (VO) workflow. This object (MB = -15.98 mag, Re = 0.24 kpc) becomes the fifth cE where the spatially resolved kinematics and stellar populations can be obtained. We used archival HST WFPC2 images to demonstrate that its light profile has a two-component structure, and integrated photometry from GALEX, SDSS, UKIDSS and Spitzer to build the multiwavelength spectral energy distribution to constrain the star formation history (SFH). We observed this galaxy with the PMAS IFU spectrograph at the Calar-Alto 3.5-m telescope and obtained two-dimensional maps of its kinematics and stellar population properties using the full-spectral fitting technique. Its structural, dynamical and stellar population properties suggest that it had a massive progenitor heavily tidally stripped by NGC 5846. Based on observations obtained at the German-Spanish Astronomical Center, Calar Alto, operated by the Max-Planck-Institut für Astronomie Heidelberg jointly with the Spanish National Commission for Astronomy. E-mail: Igor.Chilingarian@astro.unistra.fr (IVC); chil@sai.msu.ru (IVC)

Chilingarian, Igor V.; Bergond, Gilles

2010-06-01

302

Four colour photometry of late-type binary systems. II. New light curves of BH Virginis  

NASA Astrophysics Data System (ADS)

This paper presents new complete uvby light curves of the late-type detached eclipsing binary BH Vir (G0V + G5V, P=0.81687099 deg). This binary system has been observed during four campaigns at the Calar Alto Observatory (Almeria, Spain) and at the European Southern Observatory (La Silla, Chile). This observations are part of a 6 year uvby and H? monitoring program of low mass eclipsing binaries which main objective is to provide accurate absolute astrophysical parameters for late-type main sequence stars. 1585 points spread over the binary period and covering both eclipses are given. The internal accuracy of the standard photometry measured as the mean RMS of the differences between standard value and observed value for the standard stars observed along the program is quoted in a few millimagnitudes. Detailed analysis of BH Vir, based on these light curves, will be published separately. Based on observations collected with the Danish 0.5m telescope at the European Southern Observatory (ESO), La Silla, Chile and the Spanish 1.5m telescope at Calar Alto, Almeria, Spain. Table 2 will be accessible only in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/Abstract.html.

Clement, R.; Garcia, M.; Reglero, V.; Clausen, J. V.; Bravo, A.; Suso, J.; Fabregat, J.

1997-05-01

303

Non-steady long-term uplift rates and Pleistocene marine terrace development along the Andean margin of Chile (31°S) inferred from 10Be dating  

NASA Astrophysics Data System (ADS)

Pleistocene uplift of the Chilean coast is recorded by the formation of wave-cut platforms resulting from marine erosion during sea-level highstands. In the Altos de Talinay area (~ 31°S), we have identified a sequence of 5 wave-cut platforms. Using in situ produced 10Be exposure ages we show that these platforms were formed during interglacial periods at 6, 122, 232, 321 and 690 ka. These ages correspond to marine isotopic stages (MIS) or substages (MISS) 1, 5e, 7e, 9c and 17. Shoreline angle elevations used in conjunction with our chronology of wave-cut platform formation, illustrate that surface uplift rates vary from 103 ± 69 mm/ka between 122 and 6 ka, to 1158 ± 416 mm/ka between 321 and 232 ka. The absence of preserved platforms related to the MIS 11, 13 and 15 highstands likely reflects slow uplift rates during these times. We suggest that since 700 ka, the Altos de Talinay area was predominantly uplifted during 2 short periods following MIS 17 and MISS 9c. This episodic uplift of the Chilean coast in the Pleistocene may result from subduction related processes, such as pulses of tectonic accretion at the base of the forearc wedge.

Saillard, M.; Hall, S. R.; Audin, L.; Farber, D. L.; Hérail, G.; Martinod, J.; Regard, V.; Finkel, R. C.; Bondoux, F.

2009-01-01

304

Antimalarial Activities of WR-194,965, an ?-Amino-o-Cresol Derivative†  

PubMed Central

Pilot appraisals of the activities of WR-194,965 and WR-204,165, two closely related o-cresol derivatives (both Mannich bases), in owl monkeys infected with the multidrug-resistant Vietnam Smith strain of Plasmodium falciparum showed that these compounds had similar levels of efficacy. Total course doses effecting 90% cures (CD90s) were 27 and 37 mg/kg of body weight for the respective compounds, values almost identical to the CD90 of mefloquine (a highly promising 4-quinolinemethanol) against infections with the same strain, and the CD90s of chloroquine against infections with 4-aminoquinoline-susceptible strains. Expanded studies of the activities of WR-194,965 against infections with the Smith strain of P. falciparum and Vietnam Palo Alto strain of P. vivax, designed to guide projected evaluations in human volunteers, showed: (i) that the activity of this compound was a function of total dose administered, with single doses as effective as the same amount delivered in three or seven successive daily fractions; (ii) that all regimens effected rapid clearance of parasitemia; and (iii) that based on CD90s, this agent was twice as active against infections with the Palo Alto strain of P. vivax as against the Smith strain of P. falciparum. These findings, together with results of preclinical pharmacological studies pursued elsewhere, provided support for studies in human volunteers now underway.

Schmidt, L. H.; Crosby, Ruth

1978-01-01

305

NGC 1893 optical and NIR photometry (Prisinzano+, 2011)  

NASA Astrophysics Data System (ADS)

We present new optical and NIR photometric data in the VRIJHK and H-? bands for the cluster NGC 1893. The optical photometry was obtained by using images acquired in service mode using two different telescopes: the Device Optimized for the LOw RESolution (DOLORES) mounted on the Telescopio Nazionale Galileo (TNG), used in service mode during three nights in 2007, and the Calar Alto Faint Object Spectrograph (CAFOS), mounted on the 2.2m telescope in Calar Alto German-Spanish Observatory (Spain), during three nights in 2007 and 2008. NIR observations were acquired in service mode at the TNG, using the large field Near Infrared Camera Spectrometer (NICS) with the Js(1.25um), H(1.63um) and K'(2.12um) filters during eight nights in 2007 and 2008. We observed a field around NGC 1893 with a raster of 4x4 pointings, at each pointing we obtained a series of NINT dithered exposures. Each exposure is a repetition of a DIT (Detector Integration Time) times NDIT (number of DIT), to avoid saturation of the background. (4 data files).

Prisinzano, L.; Sanz-Forcada, J.; Micela, G.; Caramazza, M.; Guarcello, M. G.; Sciortino, S.; Testi, L.

2010-10-01

306

Spectrocopic results on ROSAT late-type stars (Zickgraf+, 2005)  

NASA Astrophysics Data System (ADS)

Paper III (Appenzeller et al., 1998, Cat. ) presents a catalogue of optical identifications for 685 RASS sources contained in six study areas. The catalogue contains 254 X-ray sources which have been identified as coronal emitters of spectral types F to M. The stellar sample of G to M above was observed spectroscopically during several observing runs. Low-resolution spectra were obtained with CAFOS, high-resolution spectra were observed with FOCES, both attached to the 2.2m telescope at Calar Alto observatory (CA), Spain. Further high- and medium-resolution observations were obtained at the Observatoire de Haute Provence (OHP), France, with the spectrographs AURELIE and CARELEC at the 1.52m and 1.93m telescopes, respectively. A few supplementary high- and low-resolution observations were obtained at European Southern Observatory, La Silla, Chile (ESO), with CASPEC at the ESO 3.6m telescope and DFOSC at the Danish 1.54m telescope, respectively. A further observing run of 5 nights at Calar Alto observatory in February 2001 was lost due to bad weather conditions. (3 data files).

Zickgraf, F.-J.; Krautter, J.; Reffert, S.; Alcala, J. M.; Mujica, R.; Covino, E.; Sterzik, M. F.

2006-08-01

307

The luminous `Seyfert 1' type II Supernova 1997ab.  

NASA Astrophysics Data System (ADS)

We report the discovery of SN1997ab, a supernova with a Seyfert 1 type spectrum similar to SN1987F. SN1997ab was first seen at B=14.7+/-0.5 on a digitized objective prism spectrum taken on April 11, 1996 for the Hamburg Quasar Survey with the Calar Alto 80cm Schmidt telescope and was automatically selected as a low redshift QSO candidate. Spectra and images taken with CAFOS at the 2.2m telescope on Calar Alto on Feb. 28 and March 2, 1997 show the SN at B=16.2 with strong Balmer lines, broad FeII emission bumps at {last_=5250Å and 4580Å, a strong IR CaII triplet and the HeI 7065Å and 5876Å lines. The SN is located 3."7 southwest off the center of the faint (B=~17.7) dwarf irregular HS0948+2018. According to sharp HII region type [OIII], [NII], [SII] lines and sharp Balmer line components, the radial velocity of the parent galaxy is 3750km/s. This yields a brightness on April 11, 1996 of M_B_=-19.1 (for H_0_=65km/s/Mpc) and of M_B_=-17.6 on March 2, 1997. With its high luminosity and slow fading SN1997ab is similar to SN1988Z and SN1987F. SN1997ab can be expected to be observable for several years.

Hagen, H.-J.; Engels, D.; Reimers, D.

1997-08-01

308

HS 0705+6700: a New Eclipsing sdB Binary  

NASA Astrophysics Data System (ADS)

HS 0705+6700 is a newly discovered eclipsing sdB binary system consisting of an sdB primary and a cool secondary main sequence star. CCD photometry obtained in October and November 2000 with the 2.5m Nordic (NOT) telescope (La Palma, Tenerife) in the B passband and with the 2.2m Calar Alto telescope (CAFOS, R filter) yielded eclipse light curves with complete orbital phase coverage at high time resolution. A periodogram analysis of 12 primary minimum times distributed over the time span from October 2000 to March 2001 allowed to derive the following exact period and linear ephemeris: prim. min. = HJD 2451822.759782(22) + 0.09564665(39) ? E A total of 15 spectra taken with the 3.5m Calar Alto telescope (TWIN spectrograph) on March 11-12, 2001, were used to establish the radial velocity curve of the primary star (K1 = 85.8 km/s) , and to determine its basic atmospheric parameters (Teff = 29300 K, log g = 5.47). The B and R light curves were solved using our Wilson-Devinney based light curve analysis code MORO (Drechsel et al. 1995, A&A 294, 723). The best fit solution yielded exact system parameters consistent with the spectroscopic results. Detailed results will be published elsewhere (Drechsel et al. 2001, A&A, in preparation).

Drechsel, H.; Heber, U.; Napiwotzki, R.; Ostensen, R.; Solheim, J.-E.; Deetjen, J.; Schuh, S.

309

The German-Spanish connection  

NASA Astrophysics Data System (ADS)

Cooperation between West Germany and Spain in the field of observational astronomy is discussed, with particular attention given to the newly operational German-Spanish Astronomical Center atop Calar Alto, Spain. The history of German and Spanish observational astronomy is briefly indicated as motivation for the joint venture, and the construction of the Calar Alto observatory, a branch of the Max Planck Institute for Astronomy, is outlined. The Center's instruments consist of the operational 1.2-m reflector employing an aplanatic Ritchey-Chretien system and a two-element field corrector, the 2.2-m reflector again with a Ritchey-Chretien optical system with field corrector however using a four-mirror coude arrangement, and a 3.5-m reflector under construction. Current objects of research include the bipolar H II region S 106, and extragalactic objects such as BL Lac objects, quasars and active galaxies. Organizational and operational aspects of the Center and the Max Planck Institute for Astronomy are also outlined.

Robinson, L. J.

1980-04-01

310

Spectral characterisation of the CARMENES input catalogue  

NASA Astrophysics Data System (ADS)

CARMENES (Calar Alto high-Resolution search for M dwarfs with Exoearths with Near-infrared and optical Échelle Spectrographs) is the future exoplanet hunter for the 3.5-m Calar Alto telescope. Its first light is expected to be in early 2014. For a sample of 312 M-type stars, we performed their spectral-type classification by comparing their low-resolution spectra with those of spectral-type standard stars acquired during the same observing runs, and using spectral indices well-calibrated for M dwarfs, such as, TiO5, CaH2 and CaH3. We also derived chromospheric activity indicators and relative metallicities. All these data were included in our ``input catalogue'', CARMENCITA (CARMENES Cool star Information and daTa Archive), which will be the most comprehensive catalogue on M dwarfs ever built. This database currently comprises the over 1300 brightest, latest M dwarfs northern of ? = -23 deg. Among them, we will select carefully the 300 most promising candidates that will be surveyed for low-mass planet companions by means of the analysis of high accuracy radial velocity measurements. Our URL: {http://carmenes.caha.es/}

Klutsch, A.; Alonso-Floriano, F. J.; Caballero, J. A.; Montes, D.; Cortés-Contreras, M.; López-Santiago, J.; Morales, J. C.; Quirrenbach, A.; Amado, P. J.; Ribas, I.; Reiners, A.; Mundt, R.

2012-12-01

311

The Location of the Magnetopause Reconnection Site during Southward IMF Conditions  

NASA Astrophysics Data System (ADS)

Karlheinz Trattner, karlheinz.j.trattner.dr@lmco.com Lockheed Martin Advanced Technology Lab, CA 94304, California, United States Stephen Fuselier, stephen.a.fuselier@lmco.com Lockheed Martin Advanced Technology Lab, Palo Alto, California, United States Steven Petrinec, steven.m.petrinec@lmco.com Lockheed Martin Advanced Technology Lab, Palo Alto, United States There are two reconnection location scenarios discussed in the literature: a) anti-parallel re-connection where shear angles between the magnetospheric field and the IMF are near 180 degrees, and b) component reconnection where shear angles are as low as 50 degrees. One popular component reconnection model is the tilted neutral line model. Recent studies about the location of the reconnection line with single point measurements under stable solar wind and IMF conditions reveal that the so-called tilted X-line, crossing near the dayside sub-solar region, is the dominant reconnection scenario. Specifically, magnetic reconnection will occur along the line of maximum magnetic shear across the dayside magnetopause. Exceptions to this reconnection location are dominant southward IMF conditions (within 25 of southward IMF) or a dominant IMF BX component (more than 70

Trattner, Karlheinz; Fuselier, Stephen; Petrinec, Steven

312

Tantalite-(Mn) from the Borborema Pegmatite Province, northeastern Brazil: conditions of formation and melt- and fluid-inclusion constraints on experimental studies  

NASA Astrophysics Data System (ADS)

Carbon dioxide-rich fluid and carbonate-rich aluminosilicate melt inclusions in tantalite-(Mn) from the Alto do Giz pegmatite in the Borborema Pegmatite Province, northeastern Brazil were investigated to constrain the formation of the host crystals. The results demonstrate that in the Alto do Giz pegmatite, water- and alkaline carbonate-rich fluids and melts are responsible for the transport and deposition of tantalite-(Mn) at temperatures around 600°C and about 4 kbar. Moreover, evidence is presented to show that during crystallization of the tantalite-(Mn), three different components coexisted, which are now trapped as separate inclusions: two immiscible silicate melts (types A and B melt inclusions) and a CO2-rich aqueous fluid. We hypothesize that immiscible fluid separation may have been a critical factor in producing the water- and alkaline carbonate-rich fluids and melts necessary for Ta and Nb transport. Since the tantalite-(Mn) crystallized during pegmatite formation, this mechanism must also have implications for pegmatite genesis in general.

Thomas, Rainer; Davidson, Paul; Beurlen, Hartmut

2011-10-01

313

Geophysical methods applied to fault characterization and earthquake potential assessment in the Lower Tagus Valley, Portugal  

NASA Astrophysics Data System (ADS)

The study region is located in the Lower Tagus Valley, central Portugal, and includes a large portion of the densely populated area of Lisbon. It is characterized by a moderate seismicity with a diffuse pattern, with historical earthquakes causing many casualties, serious damage and economic losses. Occurrence of earthquakes in the area indicates the presence of seismogenic structures at depth that are deficiently known due to a thick Cenozoic sedimentary cover. The hidden character of many of the faults in the Lower Tagus Valley requires the use of indirect methodologies for their study. This paper focuses on the application of high-resolution seismic reflection method for the detection of near-surface faulting on two major tectonic structures that are hidden under the recent alluvial cover of the Tagus Valley, and that have been recognized on deep oil-industry seismic reflection profiles and/or inferred from the surface geology. These are a WNW ESE-trending fault zone located within the Lower Tagus Cenozoic basin, across the Tagus River estuary (Porto Alto fault), and a NNE SSW-trending reverse fault zone that borders the Cenozoic Basin at the W (Vila Franca de Xira Lisbon fault). Vertical electrical soundings were also acquired over the seismic profiles and the refraction interpretation of the reflection data was carried out. According to the interpretation of the collected data, a complex fault pattern disrupts the near surface (first 400 m) at Porto Alto, affecting the Upper Neogene and (at least for one fault) the Quaternary, with a normal offset component. The consistency with the previous oil-industry profiles interpretation supports the location and geometry of this fault zone. Concerning the second structure, two major faults were detected north of Vila Franca de Xira, supporting the extension of the Vila Franca de Xira Lisbon fault zone northwards. One of these faults presents a reverse geometry apparently displacing Holocene alluvium. Vertical offsets of the Holocene sediments detected in the studied geophysical data of Porto Alto and Vila Franca de Xira Lisbon faults imply minimum slip rates of 0.15 0.30 mm/year, three times larger than previously inferred for active faults in the Lower Tagus Valley and maximum estimates of average return periods of 2000 5000 years for M 6.5 7 co-seismic ruptures.

Carvalho, João; Cabral, João; Gonçalves, Rui; Torres, Luís; Mendes-Victor, Luís

2006-06-01

314

Final Design of the CARMENES M-Dwarf Radial-Velocity Survey Instrument  

NASA Astrophysics Data System (ADS)

CARMENES (Calar Alto high-Resolution search for M dwarfs with Exo-earths with Near-infrared and optical Echelle Spectrographs) is a next-generation instrument being built for the 3.5m telescope at the Calar Alto Observatory by a consortium of eleven Spanish and German institutions. CARMENES will conduct a five-year exoplanet survey targeting ~300 M dwarfs. The CARMENES instrument consists of two separate échelle spectrographs covering the wavelength range from 0.55 to 1.7 ?m at a spectral resolution of R = 82,000, fed by fibers from the Cassegrain focus of the telescope. For late-M spectral types, the wavelength range around 1.0 ?m (Y band) is the most important wavelength region for radial velocity work. Therefore, the efficiency of CARMENES will be optimized in this range. Since CCDs do not provide high enough efficiency around 1.0 ?m and no signal at all beyond the Si cutoff at 1.1 ?m, a near-IR detector is required. It is thus natural to adopt an instrument concept with two spectrographs, one equipped with a CCD for the range 0.55-1.05 ?m, and one with HgCdTe detectors for the range from 0.9-1.7 ?m. Each spectrograph will be coupled to the 3.5m telescope with its own optical fiber. The front end will contain a dichroic beam splitter and an atmospheric dispersion corrector, to feed the light into the fibers leading to the spectrographs. Guiding is performed with a separate camera. Additional fibers are available for simultaneous injection of light from emission line lamps for RV calibration. The spectrographs are mounted on benches inside vacuum tanks located in the coudé laboratory of the 3.5m dome. Each vacuum tank is equipped with a temperature stabilization system capable of keeping the temperature constant to within ±0.01K over 24h. The visible-light spectrograph will be operated near room temperature, the NIR spectrograph will be cooled to 140K. The CARMENES instrument passed its preliminary design review in July 2011; the final design is just being completed. Commissioning of the instrument is planned for the first half of 2014. At least 600 useable nights have been allocated at the Calar Alto 3.5m Telescope for the CARMENES survey in the time frame from 2014 to 2018.

Quirrenbach, Andreas; Amado, P.; Seifert, W.; Sánchez Carrasco, M. A.; Ribas, I.; Reiners, A.; Mandel, H.; Caballero, J. A.; Mundt, R.; Galadí, D.; Consortium, CARMENES

2013-01-01

315

The Alhambra Survey: a Large Area Multimedium-Band Optical and Near-Infrared Photometric Survey  

NASA Astrophysics Data System (ADS)

Here we describe the first results of the Advanced Large Homogeneous Area Medium-Band Redshift Astronomical (ALHAMBRA) survey, which provides cosmic tomography of the evolution of the contents of the universe over most of cosmic history. Our novel approach employs 20 contiguous, equal-width, medium-band filters covering from 3500 Å to 9700 Å, plus the standard JHKs near-infrared (NIR) bands, to observe a total area of 4 deg2 on the sky. The optical photometric system has been designed to maximize the number of objects with accurate classification by spectral energy distribution type and redshift, and to be sensitive to relatively faint emission features in the spectrum. The observations are being carried out with the Calar Alto 3.5 m telescope using the wide-field cameras in the optical, Large Area Imager for Calar Alto, and in the NIR, Omega-2000. The first data confirm that we are reaching the expected magnitude limits (for a total of 100 ks integration time per pointing) of AB <= 25 mag (for an unresolved object, signal-to-noise ratio = 5) in the optical filters from the blue to 8300 Å, and from AB = 24.7 to 23.4 for the redder ones. The limit in the NIR, for a total of 15 ks exposure time per pointing, is (in the Vega system) Ks ? 20 mag, H? 21 mag, J? 22 mag. Some preliminary results are presented here to illustrate the capabilities of the ongoing survey. We expect to obtain accurate redshift values, ?z/(1 + z) <= 0.03 for about five ×105 galaxies with I <= 25 (60% completeness level), and z med = 0.74. This accuracy, together with the homogeneity of the selection function, will allow for the study of the redshift evolution of the large-scale structure, the galaxy population and its evolution with redshift, the identification of clusters of galaxies, and many other studies, without the need for any further follow-up. It will also provide targets for detailed studies with 10 m class telescopes. Given its area, spectral coverage, and its depth, apart from those main goals, the ALHAMBRA survey will also produce valuable data for galactic studies. Based on observations collected at the German-Spanish Astronomical Center, Calar Alto, jointly operated by the Max-Planck-Institut für Astronomie Heidelberg and the Instituto de Astrofísica de Andalucía (CSIC).

Moles, M.; Benítez, N.; Aguerri, J. A. L.; Alfaro, E. J.; Broadhurst, T.; Cabrera-Caño, J.; Castander, F. J.; Cepa, J.; Cerviño, M.; Cristóbal-Hornillos, D.; Fernández-Soto, A.; González Delgado, R. M.; Infante, L.; Márquez, I.; Martínez, V. J.; Masegosa, J.; del Olmo, A.; Perea, J.; Prada, F.; Quintana, J. M.; Sánchez, S. F.

2008-09-01

316

Implementation of ion based applications for safeguards  

SciTech Connect

The uses of the LON, `Local Operating Network,` developed by Echelon Corporation, Palo Alto, California, has been expanded to handle a number of safeguards applications. A magnetic and vibration sensor pack has been developed to monitor for magnetic fields and vibration. This sensor pack can be attached to any source that generates a magnetic field, such as electrical solenoids or motors, to detect when the source is activated. New network nodes that interface directly with the raw data of Sandia developed radiation sensors, for detecting the presence of radiation sources, have been developed. The capacity of the network has been expanded to allow the transmission of large data sets, specifically the transmission of digital video images from the Sandia-developed-Image Compression and Authentication Module (ICAM).

Martinez, R.L.; Johnson, C.S.

1996-08-01

317

Geomorphology and habitat diversity in the Pantanal.  

PubMed

The present study deals with the inter-relations in the relief which forms the Bacia do Alto Rio Paraguay (BAP) in mid-west Brazil. The overall aim is to discuss the relationship between relief forms and the biodiversity of the Pantanal. The BAP is a natural environmental system with contrasts in two of the compartments on which it is formed: the plateau, the most elevated compartment, highly transformed by human activities, and the plain which forms the Pantanal, which is more preserved and less transformed in relation to productive activities. The analysis was performed based on publications with a geomorphologic focus, examining the different relief units of the BAP and the dynamics of the revealing processes of landscape change which the Pantanal has undergone since the end of the Pleistocene. PMID:21537596

Mercante, M A; Rodrigues, S C; Ross, J L S

2011-04-01

318

Environmental assessment of the area surrounding Dam Rio Verde - Parana/Brazil. An overview of environmental geomorphology.  

PubMed

This paper presents a brief essay on the situation in which the environment of the dam of the Rio Verde Basin-Parana, from the vision of environmental geomorphology. The area is located between the cities of Campo Magro and Campo Largo, Paraná plateau in the first part of theAlto Iguaçu basin. This study aims to raise the concepts relating to environmental geomorphology, to identify the anthropogenic impacts caused in the reservoir areas, identify the environmental compartments found around the dam and characterize the geologic and physiographic region. It was found that the area has intense anthropogenic influence, as urban growth is present in areas and wavy and rough terrain, subject to mass movements and floods. Besides these aspects, the use of land for agriculture contributes to fragility of the area. PMID:23424831

Garcia, Claudia Moreira; Carrijo, Beatriz Rodrigues; Sessegolo, Gisele; Passos, Everton

2012-04-01

319

New brown dwarf companions to dM(e) stars  

NASA Astrophysics Data System (ADS)

We present new astrometric and spectroscopic data to confirm two new M/L dwarf systems, G124-62 and LHS5166, and discuss the nature of a third system (LP261-75). Age and thus mass determinations of the L dwarf companions are discussed based on various activity-age relationships of the M dwarf primaries. This publication will update the list of widely separated substellar companions to nearby stars. This paper is partly based on observations obtained at the European Southern Observatory at La Silla, Chile under program ID 072.C-0571(B) and on observations collected at the Centro Astronómico Hispano Alemán (CAHA) at Calar Alto, operated jointly by the Max-Planck Institut für Astronomie and the Instituto de Astrofísica de Andalucía (CSIC).

Seifahrt, A.; Mugrauer, M.; Wiese, M.; Neuhäuser, R.; Guenther, E. W.

2005-12-01

320

Absolutely calibrated CCD images of Saturn at methane band and continuum wavelengths during its 1991 opposition  

NASA Astrophysics Data System (ADS)

Ground-based charge-coupled device images of Saturn were obtained at the Cassegrain focus of the 1.52-m telescope at the Calar Alto Observatory (Andalucia, Spain) during the 1991 opposition. The images were obtained in and out of the absorption methane bands at 6190, 7250, and 8900A under very good seeing conditions. A Bayesian deconvolution technique was employed in the restoration procedure. The derived absolute reflectivities and band depths at some locations of the disk are provided in tables appropriate for analysis in terms of scattering models. Possible temporal variations between the reflectivities found here and those reported by West et al. (1982) are discussed. No longitudinal variations in reflectivity larger than a 4 percent level were found. Some images showed bright spot activity at the equatorial region.

Ortiz, J. L.; Moreno, F.; Molina, A.

1993-02-01

321

uvby photometry of BH Vir (Clement+ 1997)  

NASA Astrophysics Data System (ADS)

This paper presents new complete uvby light curves of the late-type detached eclipsing binary BH Vir (G0V + G5V, P=0.81687099d). This binary system has been observed during four campaigns at the Calar Alto Observatory (Almeria, Spain) and at the European Southern Observatory (La Silla, Chile). This observations are part of a 6 year uvby and H{beta} monitoring program of low mass eclipsing binaries which main objective is to provide accurate absolute astrophysical parameters for late-type main sequence stars. 1585 points spreaded over the binary period and covering both eclipses are given. The internal accuracy of the standard photometry measured as the mean RMS of the differences between standard value and observed value for the standard stars observed along the program is quoted in a few millimagnitudes. Detailed analysis of BH Vir, based on these light curves, will be published separately. (2 data files).

Clement, R.; Garcia, M.; Reglero, V.; Clausen, J. V.; Bravo, A.; Suso, J.; Fabregat, J.

1996-09-01

322

[Spatio-temporal dynamic of green lacewings (Neuroptera: Chrysopidae) taxocenosis on natural ecosystems].  

PubMed

In order to study the interactions of green lacewings toxocenosis on natural ecossystems, samplings were carried out in the Parque Ecológico Quedas do Rio Bonito, located in Lavras, Alto Rio Grande region, South of Minas Gerais, Brazil. The species inventory was accomplished in two vegetation types: semi-evergreen forest and open field formations, including areas of montane grassland, rocky montane grassland and "cerrado". Insects were captured with a butterfly net during 2h, walking through each vegetation formation. Sampling resulted in 1,948 specimens belonging to 30 species, of which 14 were Chrysopini and 16 Leucochrysini. Representatives of these tribes were observed both in forest and in open field formations. Species of the genera Ceraeochrysa, Chrysoperla, Chrysopodes, Plesiochrysa and Leucochrysa were found in forests and in open field formations, except for Plesiochrysa. The highest richness and diversity of species were observed in the forest. The similarity index among the communities of green lacewings in the studied areas was 27%. PMID:20877980

Costa, Renildo I F; Souza, Brígida; Freitas, Sérgio De

323

CARCINOID TUMOR OF THE VERMIFORM APPENDIX WITH DISTANT METASTASIS--A Review of the Literature and Report of Two Cases, One in a 14-year-old Girl  

PubMed Central

Metastatic carcinoid tumors of the appendix are probably not as rare as is commonly thought. In five of thirteen cases diagnosed at the Stanford-Palo Alto Hospital, there was microscopic evidence of lymphatic invasion. Metastasis to regional nodes was demonstrated in two of the five. These two cases bring the total number reported in the medical literature to 31. One of the patients was a 14-year-old girl. The youngest patient previously cited with metastasis from carcinoid tumor of the appendix was 16 years of age. We believe that all carcinoid tumors, regardless of location, are malignant lesions and urge careful pathologic study for evidence of lymphatic invasion. When such invasion is present, removal of regional nodes by right hemicolectomy seems indicated. ImagesFigure 1.Figure 2.

Kieraldo, John; Eversole, Stanton; Allen, Richard

1963-01-01

324

Modular Robotics  

NSDL National Science Digital Library

The Palo Alto Research Center (PARC) is a subsidiary of Xerox Corporation. One of its most intriguing areas of study is "modular reconfigurable robotics," which is a technology that allows a robot to take itself apart and put itself back together again in a new form. This lets the robot customize its design for a given task. Several different models of robots have been constructed at the PARC, and this Web site describes how they were built and how they function. There is a large collection of video clips that show each of the robots in operation, including one of a robot riding a tricycle. Two Java simulation programs can be downloaded that demonstrate the control systems of two of the PARC models. A long list of publication titles with abstracts is given, and the full text is available for a few of them.

325

Opto-mechanical design of PANIC  

NASA Astrophysics Data System (ADS)

PANIC, the Panoramic Near-Infrared Camera, is a new instrument for the Calar Alto Observatory. A 4x4 k detector yields a field of view of 0.5x0.5 degrees at a pixel scale of 0.45 arc sec/pixel at the 2.2m telescope. PANIC can be used also at the 3.5m telescope with half the pixel scale. The optics consists of 9 lenses and 3 folding mirrors. Mechanical tolerances are as small as 50 microns for some elements. PANIC will have a low thermal background due to cold stops. Read-out is done with MPIA's own new electronics which allows read-out of 132 channels in parallel. Weight and size limits lead to interesting design features. Here we describe the opto-mechanical design.

Fried, Josef W.; Baumeister, Harald; Huber, Armin; Laun, Werner; Rohloff, Ralf-Rainer; Concepción Cárdenas, M.

2010-07-01

326

Optical design and cryogenic mounting of the optics for a pyramid waterfront sensor working in the near infrared wavelength range  

NASA Astrophysics Data System (ADS)

This paper describes the whole process of designing, manufacturing and assembling the optics for an infrared pyramid wavefront sensor, called PYRAMIR. This sensor is built to work with the adaptive optical system at the 3.5 m telescope of the Calar Alto Observatory, Spain, which controls a 97 actuator deformable mirror. PYRAMIR is working in combination with an infrared science camera, which is used for observations. Since the wavefront sensor works in the near infrared (1.0 ?m to 2.4 ?m), the detector, the optics and all the mechanics are cooled to liquid nitrogen temperature. For this cryogenic condition, special care has to be taken for the optical design and the mounting of the lenses. We describe in detail the process from infrared optical design and cryo-mechanical engineering, to the final assembly of the opto-mechanical units and testing in the lab. Technical solutions are illustrated and the final performance is demonstrated.

Bizenberger, P.; Baumeister, H.; Büchler Costa, J.; Peter, D.

2005-09-01

327

Analysis of the structural parameters that influence gas production from the Devonian shale. Annual progress report, 1979-1980. Volume III. Data repository and reports published during fiscal year 1979-1980: production, unsponsored research  

SciTech Connect

This document consists of the following papers: inorganic geochemistry studies of the Eastern Kentucky Gas Field; lithology studies of upper Devonian well cuttings in the Eastern Kentucky Gas Field; possible effects of plate tectonics on the Appalachian Devonian black shale production in eastern Kentucky; preliminary depositional model for upper Devonian Huron age organic black shale in the Eastern Kentucky Gas Field; the anatomy of a large Devonian black shale gas field; the Cottageville (Mount Alto) Gas Field, Jackson County, West Virginia: a case study of Devonian shale gas production; the Eastern Kentucky Gas Field: a geological study of the relationships of Ohio Shale gas occurrences to structure, stratigraphy, lithology, and inorganic geochemical parameters; and a statistical analysis of geochemical data for the Eastern Kentucky Gas Field.

Negus-De Wys, J.; Dixon, J. M.; Evans, M. A.; Lee, K. D.; Ruotsala, J. E.; Wilson, T. H.; Williams, R. T.

1980-10-01

328

Factors conditioning the habitat and the density of Biomphalaria tenagophila (Orbigny, 1835) in an isolated schistosomiasis focus in Rio de Janeiro city.  

PubMed

The present work was carried out in a watercress garden in Alto da Boa Vista, in the city of Rio de Janeiro, Brazil. The investigation was carried out in two phases. The first one (1985-86) involved the sampling of Biomphalaria tenegophila in two areas to determine its relative populational densities. The results showed that the populations presented similar densities and dynamics. The second phase (1988-89) involved the study of the influence of some environmental factors on the establishment of B. tenagophila in watercress garden. Two factors were identified as responsible for the establishment of B. tenagophila in the garden: (1) the quality of the water entering the irrigation system, to which domestic sewage is added, and (2) alterations in the nature of the substrate, due to inadequate fertilization techniques, which employ organic matter from adjacent pigsties. Aquatic plants and hydrological parameters of the irrigation system were subsidiary factors to the establishment of B. tenagophila in the garden. PMID:8107608

Baptista, D F; Jurberg, P

329

The complex ecology of hantavirus in Paraguay.  

PubMed

Following an outbreak of hantavirus pulmonary syndrome (HPS) in the Paraguayan Chaco in 1995, Calomys laucha was identified as the rodent host for the hantavirus associated with these cases. To explore the possibility of additional hantaviruses in Paraguay, we collected 636 mammals from 10 of the 17 departments. Plasma from 27 animals in Alto Paraguay and Boquer6n in the Chaco and Neembucú and Itapúa in the eastern region had antibody to Andes virus antigens. Of these 27, five individuals (among four species) were positive for hantavirus RNA. Sera were collected from indigenous people in eastern Paraguay to ascertain whether persons were being infected with hantavirus outside of the Chaco. Seventeen percent were antibody-positive. These results suggest that several different hantaviruses are co-circulating in Paraguay, and that HPS cases occurring in eastern Paraguay may result from exposure to hantaviruses that are distinct from those in the Chaco. PMID:14628942

Chu, Yong-Kyu; Owen, Robert D; Gonzalez, Liza M; Jonsson, Colleen B

2003-09-01

330

Sequential Determination of U and Th Decay Series in Santana Cave, Southwest Brazil  

SciTech Connect

Parque Estadual Turistico do Alto Ribeira (PETAR) is located in the South-western part of Sao Paulo State, in the Ribeira Valley. In this national state park a large number of caves are found, which are among the most visited of the country. These caves, located in a karstic zone, are characterized by the presence of carbonaceous rocks frequently fractured and collapsed. Although, carbonates (dolomites and calcitic rocks) usually have low U content, this element can be found in the structure of the surrounding rocks. This paper aims to determine {sup 238}U, {sup 234}U, {sup 226}Ra and {sup 210}Pb concentration in samples of rock, soil, river water and sediment, in Santana cave. The radionuclide {sup 238}U was determined by alpha spectrometry using a surface barrier detector. {sup 226}Ra and {sup 210}Pb were determined by measuring the gross alpha and beta activity on a gas flow proportional counter.

Silva, P. S. C.; Damatto, S. R.; Mazzilli, B. P. [Centro de Metrologia das Radiacoes Instituto de Pesquisas Energeticas e Nucleares Av. Prof. Lineu Prestes 2242-Cidade Universitaria-CEP 05508 000 Sao Paulo (Brazil)

2008-08-07

331

Patterned variation in prehistoric chiefdoms  

PubMed Central

Comparative study of early complex societies (chiefdoms) conjures visions of a cultural evolutionary emphasis on similarities and societal typology. Variation within the group has not been as systematically examined but offers an even more productive avenue of approach to fundamental principles of organization and change. Three widely separated trajectories of early chiefdom development are compared here: the Valley of Oaxaca (Mexico), the Alto Magdalena (Colombia), and Northeast China. Archaeological data from all three regions are analyzed with the same tools to reveal variation in human activities, relationships, and interactions as these change in the emergence of chiefly communities. Patterning in this variation suggests the operation of underlying general principles, which are offered as hypotheses that merit further investigation and evaluation in comparative study of a much larger number of cases.

Drennan, Robert D.; Peterson, Christian E.

2006-01-01

332

Sequential Determination of U and Th Decay Series in Santana Cave, Southwest Brazil  

NASA Astrophysics Data System (ADS)

Parque Estadual Turístico do Alto Ribeira (PETAR) is located in the South-western part of Sa~o Paulo State, in the Ribeira Valley. In this national state park a large number of caves are found, which are among the most visited of the country. These caves, located in a karstic zone, are characterized by the presence of carbonaceous rocks frequently fractured and collapsed. Although, carbonates (dolomites and calcitic rocks) usually have low U content, this element can be found in the structure of the surrounding rocks. This paper aims to determine 238U, 234U, 226Ra and 210Pb concentration in samples of rock, soil, river water and sediment, in Santana cave. The radionuclide 238U was determined by alpha spectrometry using a surface barrier detector. 226Ra and 210Pb were determined by measuring the gross alpha and beta activity on a gas flow proportional counter.

Silva, P. S. C.; Damatto, S. R.; Mazzilli, B. P.

2008-08-01

333

Using Facebook Within a Geriatric Pharmacotherapy Course  

PubMed Central

Objective To evaluate using an Internet-based social networking site within an elective geriatric pharmacotherapy course. Design Thirty pharmacy students enrolled in a geriatric pharmacotherapy elective course were invited to join a closed Facebook (Facebook Inc, Palo Alto, CA) group to enhance communication among students and faculty members within the course. Creating a discussion board was the primary activity in the course. Each week, 3 students were assigned to post a healthy aging topic, and other students in the class were expected to post their comments and reactions. The healthy aging topics also were discussed during class. Assessment Students wrote reflections about their experiences using Facebook for the activities within this course. A survey instrument also measured students' opinions about using Facebook for educational purposes. Conclusion Using Facebook allowed students to discuss topics more openly and encouraged classroom discussions of healthy aging topics.

2010-01-01

334

Searching double-peaked emission-line profiles in the spectra of galaxies through the symmetry of the cross-correlation function  

NASA Astrophysics Data System (ADS)

The presence of double-peaked/multi-component emission-line profiles in the spectra of galaxies is commonly identified by visual inspection. However, the identification of complex emission-line profiles by eye is unlikely for large data bases such as the Sloan Digital Sky Survey (SDSS) or the integral field spectroscopy surveys of galaxies (e.g. Calar Alto Legacy Integral Field Area Survey or The Mapping Nearby Galaxies at APO). We describe a quick method involving a cross-correlation technique for detecting the presence of complex (double-peaked or multiple components) profiles in the spectra of galaxies, deriving simultaneously a first estimation of the velocity dispersions and radial velocities of the dominant gaseous component. We illustrate the proposed procedure with the well-known complex [O III]??4959, 5007 profiles of the central region of NGC 1068.

García-Lorenzo, B.

2013-03-01

335

Effects of temperature on the development of the Neotropical carrion beetle Oxelytrum discicolle (Brullé, 1840) (Coleoptera: Silphidae).  

PubMed

Due to its necrophagy, the Neotropical beetle Oxelytrum discicolle (Brullé, 1840) is found in association with human corpses. Its biology can provide important information to determine the postmortem interval (PMI). We studied the life cycle of O. discicolle in the laboratory under three constant temperatures (15, 20 and 28 degrees C) and under natural conditions (mean T=18.5 degrees C) in a cloud forest in Altos de Pipe (10 degrees 20'N, 66 degrees 55'W) Miranda state, Venezuela. The total time required to complete development from egg to adult emergence shortened as temperatures increased, ranging from 40.00+/-2.73 days at 15 degrees C to 20.33+/-0.89 days at 28 degrees C. Developmental time in natural conditions was not significantly different from that obtained at 20 degrees C. This information would be useful to forensic entomology applied to criminal investigations in Venezuela and the Neotropical region. PMID:19201556

Velásquez, Yelitza; Viloria, Angel L

2009-02-07

336

The views of experts and residents on social vulnerability to flash floods in an Alpine region of Italy.  

PubMed

This paper reports on research work performed for Floodsite a European Community-funded project on the social aspects of vulnerability in the Adige/Sarca river basin of the Trentino-Alto Adige region, Italy. It identifies some limitations to the use of a fixed set of indicators, which fail to account for either local peculiarities or the intangible aspects that contribute to the shaping of social vulnerability. The authors employed a number of methods to investigate the opinions of professionals and residents on risk and safety, distinguishing between the individual and the institutional components of social vulnerability. Adopting a systemic perspective, they explored the interactions between these two elements, showing how they may give rise to unexpected phenomena. The 'safety paradox' and the 'efficiency paradox' are discussed, emerging when increased protection provided by structural devices and dedicated institutions translates into a lack of awareness and agency on the part of residents. PMID:21992718

De Marchi, Bruna; Scolobig, Anna

2011-10-13

337

MRI Artifacts of a Metallic Stent Derived From a Human Aorta Specimen  

SciTech Connect

Magnetic resonance imaging has proved to be a useful technique to get images of the whole body. However, the presence of ferromagnetic material can cause susceptibility artifacts, which result from microscopic gradients that occur near the boundaries between areas displaying different magnetic susceptibility. These gradients cause dephasing of spins and frequency shifts in the surrounding tissues. Intravoxel dephasing and spatial mis-registration can degrade image quality. An aorta with a metallic stent was preserved in formaldehyde at 10% inside acrylic cylinders and used to obtain MR images. We tested pulsed spin echo and gradient echo sequences to improve image quality. All experiments were performed on a 7T/21 cm Varian system (Varian, Inc, Palo Alto, CA) equipped with Direct Drive technology and a 16-rung birdcage coil transceiver. The presence of metallic stents produces a lack of signal that might give falsely reassuring appearances within the vessel lumen.

Soto, M. E. [Departamento de Inmunologia, Instituto Nacional de Cardiologia, 14080 Mexico DF (Mexico); Flores, P. [Departamento de Instrumentacion Electromecanica, Instituto Nacional de Cardiologia, 14080 Mexico DF (Mexico); Marrufo, O.; Hidalgo, S. S.; Rodriguez, A. O. [Departamento de Ingenieria Electrica, Universidad Autonoma Metropolitana, Iztapalapa, 09340 (Mexico)

2010-12-07

338

Support for a link between the local processing bias and social deficits in autism: an investigation of embedded figures test performance in non-clinical individuals.  

PubMed

The aim of this investigation was to explore the degree to which specific subsets of autistic-like traits relate to performance on the Embedded Figures Test (Witkin et al. in A manual for the embedded figures test. Consulting Psychologists Press, Palo Alto, CA, 1971). In the first group-based investigation with this focus, students were selected for their extreme scores (either high or low) on each of the 'Social Skills' and 'Details/Patterns' factors of the Autism Spectrum Quotient (Baron-Cohen et al. in J Austim Dev Disord 31:5-17, 2001). The resulting 2 × 2 factorial design permitted examination of the degree to which the social and non-social autistic-like traits separately relate to EFT performance. Surprisingly, in two studies, superior EFT performance was found to relate only to greater social difficulty, suggesting that the local processing bias in autism may be linked specifically to the social deficits. PMID:22434280

Russell-Smith, Suzanna N; Maybery, Murray T; Bayliss, Donna M; Sng, Adelln A H

2012-11-01

339

QSOs in the M3 field (Meusinger+, 2002)  

NASA Astrophysics Data System (ADS)

Two lists are presented for altogether 181 QSOs/Sey1s/NELGs in a field of about 10 square degrees centered on the globular cluster M3. All listed objects were unambiguously identified with starlike sources from a variability and proper motion (VPM) study based on a large number of digitised plates from the Tautenburg Schmidt telescope with a time-baseline of three decades. The first list summarises the data for 74 QSOs/Sey1s and 3 Narow Emission Line Galaxies (NELGs) with redshifts from spectroscopic follow-up observations with CAFOS at the 2.2m telescope of the DSAZ on Calar Alto, Spain. The data for the remaining sources, with redshifts taken from the NED, are given in the second table. (2 data files).

Meusinger, H.; Scholz, R.-D.; Irwin, M.; Lehmann, H.

2002-07-01

340

An Aladin-Based Search for Proper-Motion Companions to Young Stars in the Local Association, Tucana-Horologium and Beta Pictoris  

NASA Astrophysics Data System (ADS)

We have used the Aladin sky atlas of the Virtual Observatory to look for new common proper-motion pairs in three young stellar kinematic groups: Local Association (Tau ˜ 10-120 Myr), Tucana-Horologium (Tau ˜ 30 Myr) and Beta Pictoris (Tau ˜ 12 Myr). We have found 9 new and 14 known common proper-motion companions to the 210 investigated stars. With the CAFOS instrument at the 2.2 m Calar Alto telescope, we have investigated in detail one of the new pairs, the HD 143809 AB system, which is formed by a bright G0V primary star and a previously unknown young M1.0-1.5Ve star.

Alonso-Floriano, F. J.; Caballero, J. A.; Montes, D.

341

Confirmation of T Dwarf Candidate Companions of Radial Velocity Planet Systems  

NASA Astrophysics Data System (ADS)

We propose to carry out second epoch IRAC observations in order to confirm common proper motion of two T-dwarf companion candidates identified at 2.3 and 2.2 arcmin separation from high-eccentricity, radial velocity (RV) planet systems. The candidates were identified with Spitzer IRAC 3.6 and 4.5 micron observations, along with follow-up photometry in J (1.25 micron) band using the Calar Alto 3.5m Omega2000 instrument. One solar-type RV host star has a 1.8 MJ planet at 1.9 AU, with orbital eccentricity 0.8; the second has an 8.1 MJ planet at 2.9 AU with an orbital eccentricity of 0.3. Through the 'Kozai Mechanism', a wide-separation brown dwarf companion could explain the unusually high eccentricity of the gas giant planets in these systems.

Hulsebus, Alan; Carson, Joe; Marengo, Massimo

2012-12-01

342

Commissioning of the CCD231 4K×4K detector for PMAS  

NASA Astrophysics Data System (ADS)

The PMAS integral field spectrophotometer, operated at the Calar Alto Observatory 3.5m Telescope, is one of the most demanded instruments of its kind. The optical system was designed for a camera field of view to accommodate a 4K×4K detector with 15?m pixels. However, due to a failure of one of the initially foreseen 2K×4K CCDs in a mosaic configuration, only half of the available field of view could be covered to date. Owing to the high demand from the user community, an upgrade to the full complement of 4K×4K pixels was envisaged, based on the availability of the new e2v CCD231 device. We describe the specification, implementation, test, and commissioning of this new detector for PMAS.

Roth, Martin M.; Fechner, Thomas; Wolter, Dieter; Sandin, Christer; Kelz, Andreas; Bauer, Svend M.; Popow, Emil; Monreal-Ibero, Ana; Kehrig, Carolina; Streicher, Ole

2010-07-01

343

Near-infrared calibration systems for precise radial-velocity measurements  

NASA Astrophysics Data System (ADS)

We present work done to prepare two new near-infrared calibration sources for use on high-precision astrophysical spectrographs. Uranium-neon is an atomic calibration source, commercially available as a hollow-cathode lamp, with over 10 000 known emission lines between 0.85 and 4 ?m. Four gas cells — containing C2H2, H13CN, 12CO, and 13CO, respectively—are available as National Institute of Standards and Technology (nist) Standard Reference Materials (SRMs), and provide narrow absorption lines between 1.5 and 1.65 ?m. These calibration sources may prove useful for wavelength-calibrating the future near-infrared high-precision radial-velocity spectrometers, including the Calar Alto high-Resolution search for M dwarfs with Exo-earths with a Near-infrared Echelle Spectrograph (CARMENES),1 the SpectroPolarimetre InfraROUge (SPIRou)?, and the Habitable-Zone Planet Finder (HPF).2

Redman, Stephen L.; Kerber, Florian; Nave, Gillian; Mahadevan, Suvrath; Ramsey, Lawrence W.; Smoker, Jonathan; Käufl, Hans-Ulrich; Figueira, P. R. L.

2012-09-01

344

Antiquity of coca-leaf chewing in the south central Andes: a 3,000 year archaeological record of coca-leaf chewing from northern Chile.  

PubMed

Carbon-14 (14C) dating from mummies of the Alto Ramirez culture confirms that coca leaf chewing was an incipient practice among members of a population that peopled the valleys and coastal areas of Northern Chile by 3,000 years before the present (yr.B.P.). Out of eleven bodies from the burial site of Pisagua-7 (PSG-7, S 19 degrees 35', W 70 degrees 13') that were analyzed, two samples tested positive. Mummy 725-A C2 (dated 3,090 to 2,850 two sigma calibrated 14C years before the present) was shown to have a cocaine value of 13.3 nanograms/10 milligrams of sample (ng/10mg), and mummy 741 (2,890 to 2,760 two sigma cal yr B.P.), a 5.6 ng/10mg value. PMID:16480174

Rivera, Mario A; Aufderheide, Arthur C; Cartmell, Larry W; Torres, Constantino M; Langsjoen, Odin

2005-12-01

345

Narrow-band imaging and a search for planetary nebulae  

NASA Astrophysics Data System (ADS)

We summarize the results of narrow-band (H? and [\\O 3] lambda 5007 Angstroms) imaging of eight planetary nebulae taken during recent observing campaigns: We present the probably largest known PN, MWP 1, with a linear diameter of about 6 pc. We show first narrow-band images of He 2-437, MeWe 1-5, MeWe 1-8, MeWe 1-9, NGC 1360, and of - like we term them - the ``Galactic footballs'' A 43 and NGC 7094. We report about a search for planetary nebulae around eleven extremely hot (pre-) white dwarfs which had not been successful. Based on observations obtained at the German-Spanish Astronomical Center, Calar Alto, operated by the Max-Planck-Institut für Astronomie Heidelberg jointly with the Spanish National Commission for Astronomy and at the European Southern Observatory, La Silla, Chile.

Rauch, T.

1999-03-01

346

Volcanic history and 40Ar/39Ar and 14C geochronology of Terceira Island, Azores, Portugal  

NASA Astrophysics Data System (ADS)

Seven new 40Ar/39Ar and 23 new radiocarbon ages of eruptive units, in support of new geologic mapping, improve the known chronology of Middle to Late Pleistocene and Holocene volcanic activity on the island of Terceira, Azores and define an east-to-west progression in stratovolcano growth. The argon ages indicate that Cinco Picos Volcano, the oldest on Terceira, completed its main subaerial cone building activity by about 370 380 ka. Collapse of the upper part of the stratovolcanic edifice to form a 7 × 9 km caldera occurred some time after 370 ka. Postcaldera eruptions of basalt from cinder cones on and near the caldera floor and trachytic pyroclastic flow and pumice fall deposits from younger volcanoes west of Cinco Picos have refilled much of the caldera. The southern portion of Guilherme Moniz Volcano, in the central part of the island, began erupting prior to 270 ka and produced trachyte domes, flows, and minor pyroclastic deposits until at least 111 ka. The northern part of Guilherme Moniz Caldera is less well exposed than the southern part, but reflects a similar age range. The northwest portion of the caldera was formed sometime after 44 ka. Several well-studied ignimbrites that blanket much of the island likely erupted from Guilherme Moniz Volcano. The Pico Alto Volcanic Center, a tightly spaced cluster of trachyte domes and short flows, is a younger part of Guilherme Moniz Volcano. Stratigraphic studies and our new radiocarbon ages suggest that most of the Pico Alto eruptions occurred during the period from about 9000 to 1000 years BP. Santa Barbara Volcano is the youngest stratovolcano on Terceira, began erupting prior to 29 ka, and has been active historically.

Calvert, Andrew T.; Moore, Richard B.; McGeehin, John P.; Rodrigues da Silva, Antonio M.

2006-08-01

347

Volcanic history and 40Ar/39Ar and 14C geochronology of Terceira Island, Azores, Portugal  

USGS Publications Warehouse

Seven new 40Ar/39Ar and 23 new radiocarbon ages of eruptive units, in support of new geologic mapping, improve the known chronology of Middle to Late Pleistocene and Holocene volcanic activity on the island of Terceira, Azores and define an east-to-west progression in stratovolcano growth. The argon ages indicate that Cinco Picos Volcano, the oldest on Terceira, completed its main subaerial cone building activity by about 370-380??ka. Collapse of the upper part of the stratovolcanic edifice to form a 7 ?? 9??km caldera occurred some time after 370??ka. Postcaldera eruptions of basalt from cinder cones on and near the caldera floor and trachytic pyroclastic flow and pumice fall deposits from younger volcanoes west of Cinco Picos have refilled much of the caldera. The southern portion of Guilherme Moniz Volcano, in the central part of the island, began erupting prior to 270??ka and produced trachyte domes, flows, and minor pyroclastic deposits until at least 111??ka. The northern part of Guilherme Moniz Caldera is less well exposed than the southern part, but reflects a similar age range. The northwest portion of the caldera was formed sometime after 44??ka. Several well-studied ignimbrites that blanket much of the island likely erupted from Guilherme Moniz Volcano. The Pico Alto Volcanic Center, a tightly spaced cluster of trachyte domes and short flows, is a younger part of Guilherme Moniz Volcano. Stratigraphic studies and our new radiocarbon ages suggest that most of the Pico Alto eruptions occurred during the period from about 9000 to 1000??years BP. Santa Barbara Volcano is the youngest stratovolcano on Terceira, began erupting prior to 29??ka, and has been active historically. ?? 2006.

Calvert, A. T.; Moore, R. B.; McGeehin, J. P.; Rodrigues, da, Silva, A. M.

2006-01-01

348

CARMENES. II. Science case and M-dwarf sample  

NASA Astrophysics Data System (ADS)

CARMENES (Calar Alto high-Resolution search for M-dwarfs with Exoearths with Near-infrared and optical Echelle Spectrograph) is an instrument to be built for the 3.5m telescope of the Calar Alto Observatory. Its main goal will be to discover Earth-like planets in the habitable zone of late-type stars. It will consist of two separate spectrographs (R ˜ 82000) covering the optical and the near-infrared spectral bands. The optical bands will be used to monitor the stellar activity of the targets, while the infrared bands will be used to measure the radial velocity with a precision of 1 m s^{-1}. About 300 late-type M dwarfs will be monitored during 5 years; therefore, in order to increase the probability of discovering exoplanets, and exhaustive study of the targets is being performed. More than 2000 low-mass stars from different catalogs have been already compiled and their fundamental properties are being determined. In particular, spectral types and activity levels are very important for radial velocity surveys because activity is a source of radial velocity jitter that can hamper the detection of exoplanets. We are conducting low- and high-resolution spectroscopic observations of poorly-known targets in order to derive the spectral type as well as to estimate the chromospheric activity through the analysis of activity indicators such as the H? emission line. Our goal is to be able to select only those targets that can potentially host habitable planets and that can be detected with CARMENES. Besides, this list will provide a large catalog of M-dwarf stars with well-known properties. In this poster, we briefly summarize the science case of CARMENES and the current status of the input list.

Morales, J. C.; Ribas, I.; Caballero, J. A.; Reiners, A.; Montes, D.; Cortés-Contreras, M.; Alonso-Floriano, F. J.; Mundt, R.; Quirrenbach, A.; Amado, P. J.; Carmenes Consortium

2013-05-01

349

Effects of acid mine effluent on sediment and water geochemistry, Ruttan Cu-Zn mine  

USGS Publications Warehouse

Waters were collected from the surface and bottom of four lakes as well as from the Churchill River and approximately 20 small ponds beside the Leaf Rapids-Ruttan mine-South Indian Lake road to determine geochemical variations related to tailings and waste rock disposal from the Ruttan Cu-Zn VHMS deposit. Using sonar profiling as a guide, grab samples and cores of sediments were also collected in Ruttan, Brehaut, Rusty, and Alto lakes to investigate the geochemical and sedimentological effects of liming the acid (pH 2.5) outflow from Ruttan Lake. Preliminary results indicate that metals anthropogenically enriched in Ruttan Lake (Zn, Cd, and Hg in particular) are scavenged and precipitated at the inflow end of Brehaut Lake as a result of adding lime solutions to the Vermilion River, midway through the 500 m reach that connects Ruttan Lake and Brehaut Lake. Zn in Ruttan Lake water (up to 17 ppm) is precipitated in the limey sediment. Zn is not enriched in waters of Rusty Lake, the next lake downstream from Brehaut Lake. Rusty Lake has Zn concentrations comparable to background water from Alto Lake (<10 ppb Zn). At present, liming appears to be controlling metal migration effectively, but a body of Zn-Cd-Hg-rich carbonate precipitate occupies the south end of Brehaut Lake which, without liming, would be receiving water of pH 2.5 from Ruttan Lake, resulting in a remobilization of metals. The related study also showed that Zn concentrations are elevated in water in contact with waste rock used to upgrade sections of the Leaf Rapids-South Indian Lake and Brehaut Lake roads.

Shilts, W. W.

1996-01-01

350

Surface flow patterns and their correlation with faults geometry using SRTM and reflection seismic data in the S. Sepolcro basin - Central Italy  

NASA Astrophysics Data System (ADS)

Ongoing extensional tectonics in the axial zone of the northern Apennines is evidenced by a large amount of data including geolgical and geomorphological surveys, geodetic measurements and the earthquakes record. However, low deformation rates make the localization and characterization of deformation difficult when using geodetic and seismologic data alone. The S. Sepolcro basin is a ~21 km long, 6 km wide depression located within the Northern Apennines and belongs to a set of continental basins borderded by active normal faults. The basin is bounded to the west by the AltoTiberina low-angle normal fault, an ENE-dipping, normal fault dissecting Miocene compressional structures. The area is presently characterised by diffuse seismic activity. Recent microseismic surveys have shown that the AltoTiberina fault moves by microseismicity whereas the instrumental moderate magnitude events are possibly associated to the antithetic SW-dipping fault segments. We present a preliminary geomorphologic analysis based on the Shuttle Radar Topography Mission (SRTM) Digital elevation Model (DEM) from the S. Sepolcro basin - Central Italy in order to find evidence for surface expression of recent tectonic activity. Our method of analysis is based on an algorithm that is designed to map, on a regional scale, surface drainage patterns that may include diffuse flow (e.g., alluvial fans) and braided channels. The algorithm is a significant improvement over off-the-shelf schemes that impose single pixel outflow and everywhere-dendritic drainage, and over specialist multipixel outflow schemes that cannot handle >10^7 pixel DEMs. The study first analyzed the relationship between mean slope and mean elevation for the elaborated watersheds and then compared values of the derivatives for each river networks profiles. The final overall results will help to translate further constraints from river, ridge profiles and slope distribution using the SRTM 90m-DEM analysis. Surface geomorphological (SRTM derived) data are finally integrated with subsurface data (seismic reflection profiles) which provide faults location and geometry.

Taramelli, A.; Mirabella, F.

2006-12-01

351

The ionized gas at the centre of IC 10: a possible localized chemical pollution by Wolf-Rayet stars  

NASA Astrophysics Data System (ADS)

We present results from integral field spectroscopy with the Potsdam Multi-Aperture Spectrograph at the 3.5-m telescope at Calar Alto Observatory of the intense star-forming region [HL90] 111 at the centre of the starburst galaxy IC 10. We have obtained maps with a spatial sampling of 1 × 1 arcsec2= 3.9× 3.9 pc2 of different emission lines and analysed the extinction, physical conditions, nature of the ionization and chemical abundances of the ionized gas, as well determined locally the age of the most recent star formation event. By defining several apertures, we study the main integrated properties of some regions within [HL90] 111. Two contiguous spaxels show an unambiguous detection of the broad He II?4686 emission line, this feature seems to be produced by a single late-type WN star. We also report a probable N and He enrichment in the precise spaxels where the Wolf-Rayet (WR) features are detected. The enrichment pattern is roughly consistent with that expected for the pollution of the ejecta of a single or a very small number of WR stars. Furthermore, this chemical pollution is very localized (˜2 arcsec ˜7.8 pc) and it should be difficult to detect in star-forming galaxies beyond the Local Volume. We also discuss the use of the most common empirical calibrations to estimate the oxygen abundances of the ionized gas in nearby galaxies from 2D spectroscopic data. The ionization degree of the gas plays an important role when applying these empirical methods, as they tend to give lower oxygen abundances with increasing ionization degree. Based on observations collected at the Centro Astrónomico Hispano Alemán (CAHA) at Calar Alto, operated jointly by the Max-Plank Institut für Astronomie and the Instituto de Astrofísica de Andalucía (CSIC).Visiting Astronomer at the Instituto de Astrofísica de Canarias.

López-Sánchez, Á. R.; Mesa-Delgado, A.; López-Martín, L.; Esteban, C.

2011-03-01

352

Integral Field Spectroscopy and Multi-wavelength Imaging of the nearby Spiral Galaxy NGC 5668: An Unusual Flattening in Metallicity Gradient  

NASA Astrophysics Data System (ADS)

We present an analysis of the full bidimensional optical spectral cube of the nearby spiral galaxy NGC 5668, observed with the Pmas fiber PAcK Integral Field Unit (IFU) at the Calar Alto observatory 3.5 m telescope. We make use of broadband imaging to provide further constraints on the evolutionary history of the galaxy. This data set will allow us to improve our understanding of the mechanisms that drive the evolution of disks. We investigated the properties of 62 H II regions and concentric rings in NGC 5668 and derived maps in ionized-gas attenuation and chemical (oxygen) abundances. We find that while inward of r ~36'' ~ 4.4 kpc ~ 0.36 (D 25/2) the derived O/H ratio follows the radial gradient typical of spiral galaxies, the abundance gradient beyond r ~ 36'' flattens out. The analysis of the multi-wavelength surface brightness profiles of NGC 5668 is performed by fitting these profiles with those predicted by chemo-spectrophotometric evolutionary models of galaxy disks. From this, we infer a spin and circular velocity of ? = 0.053 and vc = 167 km s-1, respectively. The metallicity gradient and rotation curve predicted by this best-fitting galaxy model nicely match the values derived from the IFU observations, especially within r ~36''. The same is true for the colors despite some small offsets and a reddening in the bluest colors beyond that radius. On the other hand, deviations of some of these properties in the outer disk indicate that a secondary mechanism, possibly gas transfer induced by the presence of a young bar, must have played a role in shaping the recent chemical and star formation histories of NGC 5668. Based on observations collected at the German-Spanish Astronomical Center, Calar Alto, jointly operated by the Max-Planck-Institut für Astronomie Heidelberg and the Instituto de Astrofísica de Andalucía (CSIC).

Marino, R. A.; Gil de Paz, A.; Castillo-Morales, A.; Muñoz-Mateos, J. C.; Sánchez, S. F.; Pérez-González, P. G.; Gallego, J.; Zamorano, J.; Alonso-Herrero, A.; Boissier, S.

2012-07-01

353

GRB 060605: multi-wavelength analysis of the first GRB observed using integral field spectroscopy  

NASA Astrophysics Data System (ADS)

The long and relatively faint gamma-ray burst GRB 060605 detected by Swift/BAT lasted about 20 s. Its afterglow could be observed with Swift/XRT for nearly 1 day, while Swift/UVOT could detect the afterglow during the first 6 h after the event. Here, we report on integral field spectroscopy of its afterglow performed with PMAS/PPak mounted at the Calar Alto 3.5 m telescope. In addition, we report on a detailed analysis of XRT and UVOT data and on the results of deep late-time VLT observations that reveal the GRB host galaxy. We find that the burst occurred at a redshift of z = 3.773, possibly associated with a faint, RC = 26.4 ± 0.3 host. Based on the optical and X-ray data, we deduce information on the SED of the afterglow, the position of the cooling frequency in the SED, the nature of the circumburst environment, its collimation factor, and its energetics. We find that the GRB fireball was expanding into a constant-density medium and that the explosion was collimated with a narrow half-opening angle of about 2.4 degrees. The initial Lorentz factor of the fireball was about 250; however, its beaming-corrected energy release in the gamma-ray band was comparably low. The optical, X-ray afterglow, on the other hand, was rather luminous. Finally, we find that the data are consistent within the error bars with an achromatic evolution of the afterglow during the suspected jet break time at about 0.27 days after the burst. Based on observations collected at the German-Spanish Calar Alto Observatory in Spain (Programme F06-3.5-055) and at the European Southern Observatory, La Silla and Paranal, Chile (ESO Programme 177.D-0591).

Ferrero, P.; Klose, S.; Kann, D. A.; Savaglio, S.; Schulze, S.; Palazzi, E.; Maiorano, E.; Böhm, P.; Grupe, D.; Oates, S. R.; Sánchez, S. F.; Amati, L.; Greiner, J.; Hjorth, J.; Malesani, D.; Barthelmy, S. D.; Gorosabel, J.; Masetti, N.; Roth, M. M.

2009-04-01

354

Characterisation of the CAFOS linear spectropolarimeter  

NASA Astrophysics Data System (ADS)

Aims: We present a full analysis of the CAFOS polarimeter mounted at the Calar Alto 2.2 m telescope. This provides future users of this mode with all necessary information to properly correct for instrumental effects in polarization data obtained with this instrument. Methods: The standard stars BD+59d389 (polarized) and HD 14069 (unpolarized) were observed with CAFOS in November, 2010, using 16 half-wave plate angles. The linear spectropolarimetric properties of CAFOS were studied using a Fourier analysis of the resulting data. Results: CAFOS shows a roughly constant instrumental polarization at the level of ~0.3% between 4000 Å and 8600 Å. Below 4000 Å, the spurious polarization grows to reach ~0.7% at 3600 Å. This instrumental effect is most likely produced by the telescope optics, and appears to be additive. The Wollaston prism clearly operates less than ideally. However, the problem is largely removed by using at least four retarder plate angles. The chromatism of the half-wave plate causes a peak-to-peak oscillation of ~11 degrees in the polarization angle. This can be effectively corrected using the tabulated values presented in this paper. The Fourier analysis shows that the k ? 0,4 harmonics are practically negligible between 3800 and 7400 Å. Conclusions: After correcting for instrumental polarization and retarder plate chromatism, with four half-wave plate angles CAFOS can reach an rms linear polarization accuracy of about 0.1%. Based on observations collected at the German-Spanish Astronomical Center, Calar Alto, jointly operated by the Max-Planck-Institut für Astronomie Heidelberg and the Instituto de Astrofisica de Andalucia (CSIC).

Patat, F.; Taubenberger, S.

2011-05-01

355

New results from ground-based observations of asteroid 21 Lutetia prior to the Rosetta fly-by  

NASA Astrophysics Data System (ADS)

On its journey to comet 67P/Churyumov-Gerasimenko, the International Rosetta Mission (ESA) was planned to fly-by two asteroids: (2867) Steins and (21) Lutetia. (21) Lutetia was encountered on July 10th 2010. Although classified as an M-type asteroid due to its high albedo, its reflectance spectrum in the near and mid-infrared region, suggests a primitive composition, more typical of C-type asteroids. We have obtained uvbyRI photometric measurements covering the complete rotational period of the asteroid (about 8 hrs), as well as visible and near-infrared spectra in the range 0.4-2.5 micron. The spectroscopic data were taken at different rotational aspects to search for any significant inhomogeneities in asteroid's surface mineralogy. We used BUSCA at the 2.2 m telescope in Calar Alto Observatory (Almeria, CSIC-MPG), and the 1 m telescope at Lulin Observatory (Taiwan, NCU) to do the photometry; visible spectra were obtained with CAFOS, at the 2.2 m telescope of Calar Alto, while near-infrared spectra were obtained using NICS at the 3.6 m TNG of ``El Roque de los Muchachos" Observatory (La Palma). We present here the obtained values of lightcurve amplitudes, rotational period and phase coefficients, as well as results from a mineralogical analysis performed on the asteroid spectra. Lutetia was no longer be visible from Earth after May, so our data, taken during March and April, provide us with the most updated and recent information about Lutetia's surface properties prior to the fly-by. The information retrieved from this ground-based data will be part of a more complete analysis of the data acquired with the OSIRIS instrument on board the Rosetta spacecraft.

de León, J.; Duffard, R.; Lara, L. M.

2011-11-01

356

The O-type eclipsing contact binary LY Aurigae - member of a quadruple system  

NASA Astrophysics Data System (ADS)

The eclipsing binary LY Aur (O9 II + O9 III) belongs to the rare class of early-type contact systems. We obtained 23 new spectra at the Ond?ejov and Dominion Astrophysical Observatories, which were analysed with four older Calar Alto and one ELODIE archive spectra. A new result of this study is that the visual companion of LY Aur - the spectral lines of which are clearly seen in our spectra - is also an SB1 binary having an orbital period of 20.46d, an eccentric orbit, and a radial velocity semi-amplitude of 33 km s-1. The H? line blend contains an emission component, which shows dependence on the orbital phase of the eclipsing system, with the strongest emission around the secondary eclipse. Revised elements of the eclipsing binary and the orbital solution of the companion binary are determined from our set of spectra and new light-curve solutions of the eclipsing pair. The mass of the primary of 25.5 M? agrees well with its spectral type, whereas the secondary mass of 14 M? is smaller than expected. From an O-C analysis of the minimum times of LY Aur that span more than 40 years, we found that the orbital period is decreasing, indicating the presence of interaction processes. The system is likely in a phase of non-conservative mass exchange. Based on spectral observations collected at the German-Spanish Observatory, Calar Alto, Spain; Dominion Astrophysical Observatory, Canada; Ond?ejov Observatory, Czech Republic, and an archival Haute Provence Observatory ELODIE spectrum.

Mayer, Pavel; Drechsel, Horst; Harmanec, Petr; Yang, Stephenson; Šlechta, Miroslav

2013-11-01

357

Carbon monoxide exposures inside an automobile traveling on an urban arterial highway.  

PubMed

Carbon monoxide (CO) exposures were measured inside a motor vehicle during 88 standardized drives on a major urban arterial highway, El Camino Real (traffic volume of 30,500-45,000 vehicles per day), over a 13-1/2 month period. On each trip (lasting between 31 and 61 minutes), the test vehicle drove the same 5.9-mile segment of roadway in both directions, for a total of 11.8 miles, passing through 20 intersections with traffic lights (10 in each direction) in three California cities (Menlo Park, Palo Alto, and Los Altos). Earlier tests showed that the test vehicle was free of CO intrusion. For the 88 trips, the mean CO concentration was 9.8 ppm, with a standard deviation of 5.8 ppm. Of nine covariates that were examined to explain the variability in the mean CO exposures observed on the 88 trips (ambient CO at two fixed stations, atmospheric stability, seasonal trend function, time of day, average surrounding vehicle count, trip duration, proportion of time stopped at lights, and instrument type), a fairly strong seasonal trend was found. A model consisting of only a single measure of traffic volume and a seasonal trend component had substantial predictive power (R2 = 0.68); by contrast, the ambient CO levels, although partially correlated with average exposures, contributed comparatively little predictive power to the model. The CO exposures experienced while drivers waited at the red lights at an intersection ranged from 6.8 to 14.9 ppm and differed considerably from intersection to intersection.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:7921891

Ott, W; Switzer, P; Willits, N

1994-08-01

358

Constraining the Milky Way Potential with a Six-Dimensional Phase-Space Map of the GD-1 Stellar Stream  

NASA Astrophysics Data System (ADS)

The narrow GD-1 stream of stars, spanning 60° on the sky at a distance of ~10 kpc from the Sun and ~15 kpc from the Galactic center, is presumed to be debris from a tidally disrupted star cluster that traces out a test-particle orbit in the Milky Way halo. We combine Sloan Digital Sky Survey (SDSS) photometry, USNO-B astrometry, and SDSS and Calar Alto spectroscopy to construct a complete, empirical six-dimensional (6D) phase-space map of the stream. We find that an eccentric orbit in a flattened isothermal potential describes this phase-space map well. Even after marginalizing over the stream orbital parameters and the distance from the Sun to the Galactic center, the orbital fit to GD-1 places strong constraints on the circular velocity at the Sun's radius Vc = 224 ± 13 km s-1 and total potential flattening q ? = 0.87+0.07 -0.04. When we drop any informative priors on Vc , the GD-1 constraint becomes Vc = 221 ± 18 km s-1. Our 6D map of GD-1, therefore, yields the best current constraint on Vc and the only strong constraint on q ? at Galactocentric radii near R ~ 15 kpc. Much, if not all, of the total potential flattening may be attributed to the mass in the stellar disk, so the GD-1 constraints on the flattening of the halo itself are weak: q ?,halo > 0.89 at 90% confidence. The greatest uncertainty in the 6D map and the orbital analysis stems from the photometric distances, which will be obviated by GAIA. Based on observations collected at the Centro Astronómico Hispano Alemán (CAHA) at Calar Alto, operated jointly by the Max-Planck Institut für Astronomie and the Instituto de Astrofísica de Andalucía (CSIC).

Koposov, Sergey E.; Rix, Hans-Walter; Hogg, David W.

2010-03-01

359

Is there a role for an external beam boost in cervical cancer radiotherapy?†  

PubMed Central

Objectives: Some patients are medically unfit for or averse to undergoing a brachytherapy boost as part of cervical cancer radiotherapy. In order to be able to definitively treat these patients, we assessed whether we could achieve a boost plan that would mimic our brachytherapy plans using external beam radiotherapy. Methods: High dose rate brachytherapy plans of 20 patients with stage IIB cervical cancer treated with definitive chemoradiotherapy were included in this study. Patients had undergone computer tomography (CT) simulations with tandem and ovoids in place. Point “A” dose was 600–700 cGy. We attempted to replicate the boost dose distribution from brachytherapy plans using intensity-modulated radiotherapy (Varian Medical Systems, Palo Alto, CA, USA), volumetric modulated arc therapy (Rapid Arc, Varian Medical Systems, Palo Alto, CA, USA), or TomoTherapy (Accuray, Inc., Sunnyvale, CA, USA) with the brachytherapy 100% isodose line as our target. Target coverage, normal tissue dose, and brachytherapy point doses were compared with ANOVA. Two-sided p-values ?0.05 were considered significant. Results: External beam plans had excellent planning target volume (PTV) coverage, with no difference in mean PTV V95% among planning techniques (range 98–100%). External beam plans had lower bladder Dmax, small intestine Dmax, and vaginal mucosal point dose than brachytherapy plans, with no difference in bladder point dose, mean bladder dose, mean small intestine dose, or rectal dose. Femoral head dose, parametria point dose, and pelvic sidewall point dose were higher with external beam techniques than brachytherapy. Conclusions: External beam plans had comparable target coverage and potential for improved sparing of most normal tissues compared to tandem and ovoid brachytherapy.

Sethi, Rajni A.; Jozsef, Gabor; Grew, David; Marciscano, Ariel; Pennell, Ryan; Babcock, Melissa; McCarthy, Allison; Curtin, John; Schiff, Peter B.

2013-01-01

360

Integral field spectroscopy of a sample of nearby galaxies. I. Sample, observations, and data reduction  

NASA Astrophysics Data System (ADS)

Aims: Integral field spectroscopy (IFS) is a powerful approach to studying nearby galaxies since it enables a detailed analysis of their resolved physical properties. Here we present our study of a sample of nearby galaxies selected to exploit the two-dimensional information provided by the IFS. Methods: We observed a sample of 48 galaxies from the local universe with the PPaK integral field spectroscopy unit (IFU), of the PMAS spectrograph, mounted at the 3.5 m telescope at Calar Alto Observatory (Almeria, Spain). Two different setups were used during these studies (low - V300 - and medium - V600 - resolution mode) covering a spectral range of around 3700-7000 ÅÅ. We developed a full automatic pipeline for the data reduction, which includes an analysis of the quality of the final data products. We applied a decoupling method to obtain the ionised gas and stellar content of these galaxies, and derive the main physical properties of the galaxies. To assess the accuracy in the measurements of the different parameters, we performed a set of simulations to derive the expected relative errors obtained with these data. In addition, we extracted spectra for two types of aperture, one central and another integrated over the entire galaxy, from the datacubes. The main properties of the stellar populations and ionised gas of these galaxies and an estimate of their relative errors are derived from those spectra, as well as from the whole datacubes. Results: We compare the central spectrum extracted from our datacubes and the SDSS spectrum for each of the galaxies for which this is possible, and find close agreement between the derived values for both samples. We find differences on the properties of galaxies when comparing a central and an integrated spectra, showing the effects of the extracted aperture on the interpretation of the data. Finally, we present two-dimensional maps of some of the main properties derived with the decoupling procedure. Based on observations collected at the Centro Astronómico Hispano Alemán (CAHA) at Calar Alto, operated jointly by the Max-Planck Institut für Astronomie and the Instituto de Astrofísica de Andalucía (CSIC).

Mármol-Queraltó, E.; Sánchez, S. F.; Marino, R. A.; Mast, D.; Viironen, K.; Gil de Paz, A.; Iglesias-Páramo, J.; Rosales-Ortega, F. F.; Vilchez, J. M.

2011-10-01

361

Hydrological cycle.  

PubMed

The Pantanal hydrological cycle holds an important meaning in the Alto Paraguay Basin, comprising two areas with considerably diverse conditions regarding natural and water resources: the Plateau and the Plains. From the perspective of the ecosystem function, the hydrological flow in the relationship between plateau and plains is important for the creation of reproductive and feeding niches for the regional biodiversity. In general, river declivity in the plateau is 0.6 m/km while declivity on the plains varies from 0.1 to 0.3 m/km. The environment in the plains is characteristically seasonal and is home to an exuberant and abundant diversity of species, including some animals threatened with extinction. When the flat surface meets the plains there is a diminished water flow on the riverbeds and, during the rainy season the rivers overflow their banks, flooding the lowlands. Average annual precipitation in the Basin is 1,396 mm, ranging from 800 mm to 1,600 mm, and the heaviest rainfall occurs in the plateau region. The low drainage capacity of the rivers and lakes that shape the Pantanal, coupled with the climate in the region, produce very high evaporation: approximately 60% of all the waters coming from the plateau are lost through evaporation. The Alto Paraguay Basin, including the Pantanal, while boasting an abundant availability of water resources, also has some spots with water scarcity in some sub-basins, at different times of the year. Climate conditions alone are not enough to explain the differences observed in the Paraguay River regime and some of its tributaries. The complexity of the hydrologic regime of the Paraguay River is due to the low declivity of the lands that comprise the Mato Grosso plains and plateau (50 to 30 cm/km from east to west and 3 to 1.5 cm/km from north to south) as well as the area's dimension, which remains periodically flooded with a large volume of water. PMID:21537597

Gonçalves, H C; Mercante, M A; Santos, E T

2011-04-01

362

Trigonometric parallaxes of ten ultracool subdwarfs  

NASA Astrophysics Data System (ADS)

Aims: We measure absolute trigonometric parallaxes and proper motions with respect to many background galaxies for a sample of ten ultracool subdwarfs. Methods: Observations were taken in the H-band with the OMEGA2000 camera on the 3.5 m-telescope at Calar Alto, Spain during a time period of 3.5 years. For the first time, the reduction of the astrometric measurements was carried out directly with respect to background galaxies. We obtained absolute parallaxes with mean errors ranging between 1 and 3 mas. Results: With six completely new parallaxes we more than doubled the number of benchmark ultracool (>sdM7) subdwarfs. Six stars in the MK_s vs. J-Ks diagram fit perfectly to model subdwarf sequences from M7 to L4 with [M/H] between -1.0 and -1.5, whereas 4 are consistent with a moderately low metallicity ([M/H]=-0.5) from M7 to T6. All but one of our objects have large tangential velocities between 200 and 320 km s-1 typical of the Galactic halo population. Our results are in good agreement with recent independent measurements for three of our targets and confirm the previously measured parallax and absolute magnitude MK_s of the nearest and coolest (T-type) subdwarf 2MASS 0937+29 with higher accuracy. For all targets, we also obtained infrared J,H,Ks photometry at a level of a few milli-magnitudes relative to 2MASS standards. Based on observations collected with Omega 2000 at the 3.5 m telescope at the Centro Astronómico Hispano Alemán (CAHA) at Calar Alto, operated jointly by the Max-Planck Institut für Astronomie and the Instituto de Astrofísica de Andalucía (CSIC). Tables 1 and 2 are also available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/493/L27

Schilbach, E.; Röser, S.; Scholz, R.-D.

2009-01-01

363

Photometric and spectroscopic observations of asteroid (21) Lutetia three months before the Rosetta fly-by  

NASA Astrophysics Data System (ADS)

Context. On its journey to comet 67P/Churyumov-Gerasimenko, the International Rosetta Mission (ESA) was planned to fly-by two asteroids: (2867) Steins and (21) Lutetia. Although classified as an M-type asteroid because of its high albedo, its reflectance spectrum in the near and mid-infrared region, suggests a primitive composition, more typical of C-type asteroids. Results from ground-based observations are indicative of compositional variegation and of at least one significantly large crater on the surface of this asteroid. Aims: We analyse photometric and spectroscopic data of the asteroid, obtained from ground-based observations, to support the data taken by the spacecraft. Methods: We obtained uvbyIRi' photometric measurements covering the complete rotational period of the asteroid (about 8 h), using both the BUSCA instrument at the 2.2 m telescope in Calar Alto Observatory (CSIC-MPIA), and the 1 m telescope at Lulin Observatory (Taiwan, NCU). We also obtained visible and near-infrared spectra, covering the range 0.4-2.5 ?m, with CAFOS at the 2.2 m (Calar Alto) and NICS at the 3.6 m telescope TNG ("El Roque de los Muchachos" Observatory). The spectroscopic data were taken at different rotational phases to search for any significant inhomogeneities in the surface of the asteroid. Results: The simultaneous photometric lightcurves in five filters obtained with the BUSCA instrument, and the lightcurves obtained at Lulin Observatory reveal a brightness variation around a rotational phase 0.1. We took visible and near-infrared spectra at that rotational phase, and a different rotational phase for comparison. Differences in the visible spectral slope among the spectra are indicative of a crater as the most likely cause of this variation. Table 2 is only available at CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/527/A42

de León, J.; Duffard, R.; Lara, L. M.; Lin, Z.-Y.

2011-03-01

364

Spectroscopic distances of 28 nearby star candidates  

NASA Astrophysics Data System (ADS)

Aims: Twenty eight hitherto neglected candidates for the Catalogue of Nearby Stars (CNS) were investigated to verify their classification and to improve their distance estimates. All targets had at least a preliminary status of being nearby dwarf stars based on their large proper motions and relatively faint magnitudes. Better photometric and/or spectroscopic distances were required for selecting stars for further trigonometric parallax measurements. Methods: Low-resolution spectra were obtained with NASPEC at the Tautenburg 2 m telescope and with CAFOS at the Calar Alto 2.2 m telescope. The spectral types of M-type stars were determined by direct comparison of the target's spectra with those of comparison stars of known spectral types observed with the same instrument. The classification of earlier types was performed based on comparison with published spectral libraries. Results: For most of the target stars reliable spectral types could be determined and in combination with 2MASS photometry new improved distance estimates became available. The majority were classified as M dwarfs including 11 stars within 25 pc. The fainter component of LDS 1365, previously thought to form a nearby common proper motion pair, is according to our results an unrelated high-velocity background star. For several other nearby common proper motion pairs our distance estimates of the fainter components are in good agreement with Hipparcos distances of the brighter components. The three stars in our sample that were previously thought to be white dwarfs (GJ 2091, GJ 2094, GJ 2098) turned out to be more distant high-velocity F- to K-type (sub)dwarfs. For the star with the largest tangential velocity (GJ 2091; v_ tan>500 km s-1) we have additional evidence for its probable Galactic halo membership from a measured large radial velocity of 266 ± 25 km s-1 and from its UBV photometry indicating a low metallicity. Based on observations with the 2 m telescope of the Thüringer Landessternwarte Tautenburg and with the 2.2 m telescope of the German-Spanish Astronomical Center, Calar Alto, jointly operated by the Max-Planck-Institut für Astronomie Heidelberg and the Instituto de Astrofísica de Andalucía (CSIC).

Jahreiß, H.; Meusinger, H.; Scholz, R.-D.; Stecklum, B.

2008-06-01

365

Fog Collection and Sustainable Architecture in Atacama Coast  

NASA Astrophysics Data System (ADS)

It is imperative to integrate renewable energy and climate into zero-carbon buildings in arid lands, particularly when it is reinforced by natural and social science-based innovation in natural and built environs. The aim is twofold: On one hand, to establish potential natural and urban habitats and their yields required in different scales of intervention and, on another hand, augment rate and yield of fog collection used for drinking and irrigation in chosen locations. The purpose of this study is to integrate zero-carbon energy, landscape and sustainable architecture as a whole and thus envision potential inhabitation through self-sufficient space-frame configurations along the coast of Tarapacá Region in Chile. In a sequential way, this study distinguishes three scales of interventions: A. Territorial scale. It consists of rural and natural zones along the shore of Tarapacá Region: Fog oases, creeks or corridors. The strategic allocation of large fog collectors can bring local agriculture back and thus stop rural emigration; and also repair existing fragile ecosystems in several fog oases by harvesting and distributing mainly crop water. B. Local scale. The space-frame fog collectors are allocated in Alto Patache (fog oasis) and Iquique city (low-income sprawl of Alto Hospicio). These artefacts can supply both water and electricity to small communities through forestation, sustainable micro-agriculture and complementary electrification. C. Domestic scale. It consists of the design of autonomous housing configuration based in polygonal space-frames. This inhabitable unit is modular, deployable and lightweight; with an adjustable polyvalent membrane which performs as water repellent skin (facing South and SW winds) and shading device facing Equator. In addition, a domestic wind turbine is installed within the structural frame to provide autonomous electrification. Water collector, filtering (purification) and irrigation network is designed with available materials and local techniques. This research integrates climatic, structural and constructional factors by employing agile space-frame configurations; implementing appropriate low-passive energy technologies and testing hydrophobic and durable fabrics. The overall design target will upgrade the following aspects: 1. Increasing rate and yield of advection fog that can be anticipated from the fog harvesting rate and the uncertainty of climatic conditions 2. Structural reinforcement of fog collectors through lightweight, modular and deployable space-frames 3. Reducing installation and maintenance of fog collection 4. Purification of drinking water due to concentrations of pollutants 5. Lowering frame impacts on ground and surrounding mainly in lomas The methods mainly consists of literature review; fieldwork; comparative analysis of existing fog collection’s techniques and climatic design simulations.

Suau, C.

2010-07-01

366

Chemical abundance analysis of the open clusters Berkeley 32, NGC 752, Hyades, and Praesepe  

NASA Astrophysics Data System (ADS)

Context. Open clusters are ideal test particles for studying the chemical evolution of the Galactic disc. However, the number and accuracy of existing high-resolution abundance determinations, not only of [Fe/H], but also of other key elements, remains largely insufficient. Aims: We attempt to increase the number of Galactic open clusters that have high quality abundance determinations, and to gather all the literature determinations published so far. Methods: Using high-resolution (R ~ 30 000), high-quality (S/N ? 60 per pixel), we obtained spectra for twelve stars in four open clusters with the fibre spectrograph FOCES, at the 2.2 Calar Alto Telescope in Spain. We employ a classical equivalent-width analysis to obtain accurate abundances of sixteen elements: Al, Ba, Ca, Co, Cr, Fe, La, Mg, Na, Nd, Ni, Sc, Si, Ti, V, and Y. We derived oxygen abundances by means of spectral synthesis of the 6300 Å forbidden line. Results: We provide the first determination of abundance ratios other than Fe for NGC 752 giants, and ratios in agreement with the literature for the Hyades, Praesepe, and Be 32. We use a compilation of literature data to study Galactic trends of [Fe/H] and [?/Fe] with Galactocentric radius, age, and height above the Galactic plane. We find no significant trends, but some indication for a flattening of [Fe/H] at large Rgc, and for younger ages in the inner disc. We also detect a possible decrease in [Fe/H] with |z| in the outer disc, and a weak increase in [?/Fe] with Rgc. Based on observations collected with the fiber spectrograph FOCES at the 2.2 m Calar Alto Telescope. Also based on data from 2MASS survey and the WEBDA, VALD, NIST, and GEISA online database.Table 12 is available in electronic form at http://www.aanda.orgFull Table 5 is only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/535/A30

Carrera, R.; Pancino, E.

2011-11-01

367

Spatial distribution of indoor radon in Triveneto (Northern Italy): a geostatistical approach.  

PubMed

The study of spatial distribution of the indoor radon has assumed in the last years a lot of interest. The geostatistical techniques turn out to be particularly promising. The present work presents the results of a study where around 4000 indoor radon data from Veneto, Friuli Venezia-Giulia and Alto Adige, collected during the sampling campaigns performed in dwellings and in schools, have been analyzed. After the definition of the common data set, the study of the spatial distribution of the phenomenon has been performed by examining the experimental variograms. Declustering techniques have been applied. Predictive maps were defined by using simulation techniques; they allow to determine the probabilities of exceeding defined concentration levels, the 'radon-prone' areas. Systematic results regarding the validation of these maps are reported. This methodological study indicates how it is possible to understand the geographical variability of the phenomenon, trying to find out correlations among indoor radon, geological characteristics (i.e. lithology, morphology, tectonics, soil gas) and building-specific features, which can significantly influence radon concentrations. PMID:19919960

Bertolo, A; Bigliotto, C; Giovani, C; Garavaglia, M; Spinella, M; Verdi, L; Pegoretti, S

2009-11-17

368

Development and testing of a high-efficiency/high-concentration, photovoltaic module employing AlGaAs/GaAs solar cells  

NASA Astrophysics Data System (ADS)

An advanced photovoltaic module employing high-concentration (400 suns) Fresnel lenses, high efficiency AlGaAs/GaAs solar cells, and jet-impingement cell cooling was designed. The prototype module produced approximately 100 W of dc power using 12 organometallic-vapor phase epitaxial (OM-VPE) cells (21 to 23% efficiency at 400 suns, 500 C) and 12 acrylic lenses and as designed for thermal energy recovery. The maximum module efficiency measured in Palo Alto, CA, was 17.1% compared to the 14% design goal. This performance was at 500 C coolant inlet temperature and reflected deduction of coolant pumping power. The module efficiency is 17.5% when corrected to NOCT conditions (200 C coolant inlet temperature). Approximately 40 to 50% of the direct normal incident energy was determined to be available for recovery from the module coolant. The design and performance of a 3.2 kW/sub p/ photovoltaic array employing a further improved version of the module is also presented.

Owen, R. J.; Kaminar, N.; Borden, P. G.; Gregory, P. E.; Moore, O. E.

1981-10-01

369

Inhomogeneity correction and the analytic anisotropic algorithm.  

PubMed

The ability of the analytic anisotropic algorithm (AAA), a superposition- convolution algorithm implemented in the Eclipse (Varian Medical Systems, Palo Alto, CA) treatment planning system (TPS), to accurately account for the presence of inhomogeneities in simple geometries is examined. The goal of 2% accuracy, as set out by the American Association of Physicists in Medicine Task Group 65, serves as a useful benchmark against which to evaluate the inhomogeneity correction capabilities of this treatment planning algorithm. A planar geometry phantom consisting of upper and lower layers of Solid Water (Gammex rmi, Middleton, WI) separated by a heterogeneity region of variable thickness, is modeled within the Eclipse TPS. Results obtained with the AAA are compared with experimental measurements. Seven different materials, spanning the range from air to aluminum, constitute the inhomogeneity layer. In general, the AAA overpredicts dose beyond low-density regions and underpredicts dose distal to volumes of high density. In many cases, the deviation between the AAA and experimental results exceeds the Task Group 65 target of 2%. The source of these deviations appears to arise from an inability of the AAA to correctly account for altered attenuation along primary ray paths. PMID:18714283

Robinson, Don

2008-05-01

370

Results of the ASCO Study of Collaborative Practice Arrangements  

PubMed Central

Purpose: ASCO projects a shortfall of oncologists in the next decade. The study was designed to address the workforce shortage by exploring collaborative oncology practice models that include nonphysician practitioners (NPPs). Methods: ASCO contracted with Oncology Metrics, a division of Altos Solutions, to conduct a national survey of NPP integration and identify collaborative practice models and services provided by NPPs, as the first phase of the ASCO Study of Collaborative Practice Arrangements. Results of the national survey were used to identify practices for the next phase, in which selected practices participated in a more detailed data survey and satisfaction surveys. Focus groups or interviews were conducted with NPPs to collect additional subjective information to inform the project. Results: The incident-to practice model was the predominant model. Satisfaction was universally high for patients and generally high for physicians and NPPs. In virtually all cases (98%), patients recognized they were seeing an NPP rather than a physician. Practices in which the NPP worked with all practice physicians showed significantly higher productivity than those practices in which the NPP worked exclusively with a specific physician or group of physicians. Conclusion: The use of NPPs in oncology practices increases productivity for the practice and provides high physician and NPP satisfaction. Patients were aware when care was provided by an NPP and were very satisfied with all aspects of the collaborative care that they received. The integration of nonphysician practitioners into oncology practice offers a reliable means to address increased demand for oncology services without adding physicians.

Towle, Elaine L.; Barr, Thomas R.; Hanley, Amy; Kosty, Michael; Williams, Stephanie; Goldstein, Michael A.

2011-01-01

371

Multiwavelength Optical Observations of Two Chromospherically Active Binary Systems: V789 Mon and GZ Leo  

NASA Astrophysics Data System (ADS)

This paper describes a multiwavelength optical study of chromospheres in two X-ray/EUV-selected active binary stars with strong H? emission, V789 Mon (2RE J0725 - 002) and GZ Leo (2RE J1101+223). The goal of the study is to determine radial velocities and fundamental stellar parameters in chromospherically active binary systems in order to include them in the activity-rotation and activity-age relations. We carried out high-resolution echelle spectroscopic observations and applied spectral-subtraction technique in order to measure emission excesses due to chromosphere. The detailed study of activity indicators allowed us to characterize the presence of different chromospheric features in these systems and enabled to include them in a larger activity-rotation survey. We computed radial velocities of the systems using cross-correlation with the radial velocity standards. The double-line spectral binarity was confirmed and the orbital solutions improved for both systems. In addition, other stellar parameters such as spectral types, projected rotational velocities (vsin i) and the equivalent width of the lithium Li I ?6707.8 Å absorption line were determined. Based on observations collected with the 2.2 m telescope at the Centro Astronómico Hispano Alemán (CAHA) at Calar Alto (Almería, Spain), operated jointly by the Max-Planck Institut für Astronomie and the Instituto de Astrofísica de Andalucía (CSIC) and with the 2.1 m Otto Struve Telescope at McDonald Observatory of the University of Texas at Austin (USA).

Gálvez, M. C.; Montes, D.; Fernández-Figueroa, M. J.; De Castro, E.; Cornide, M.

2009-04-01

372

Design for a low-cost, 2.4-meter, geosynchronous UV Observatory  

NASA Astrophysics Data System (ADS)

Studies were initiated in 1995 at the Lockheed Martin Advanced Technology Center in Palo Alto to explore both the application of new technologies and the economical utilization of commercial products to the design of a new generation of scientific research satellites. A 2.4-meter Solar System Observatory (SSO) has been designed to carry out as its primary mission imaging and spectroscopy of comets and of the outer planets from geosynchronous orbit. Such a Hubble-class telescope with a science payload consisting of four UV/EUV spectrographs (wavelength range 550-3200 Angstroms , spectral resolution up to 20000) and a high-resolution imager having 0.06 arcsec spatial resolution can now be built and launched within the budget of a NASA Discovery Mission. Following a one-year science program under the direction of the principal investigator, the SSO would transition to a guest observer facility. Although optimized for cometary and planetary measurements in the UV/EUV, SSO would have outstanding capability for a variety of astrophysical measurements in the UV. SSO would also serve as a prototype for other similar low-cost space observatories that could be optimized for stellar, extragalactic and other applications.

Haisch, B.; Robb, P.; Strong, K.; Shemansky, D.

1998-05-01

373

Design for a low-cost geosynchronous 2.4-meter UV/EUV solar system observatory  

NASA Astrophysics Data System (ADS)

Studies were initiated in 1995 at the Lockheed Martin Advanced Technology Center in Palo Alto to explore both the application of new technologies and the economical utilization of commercial products to the design of a new generation of scientific research satellites. A 2.4-meter Solar System Observatory (SSO) has been designed to carry out as its primary mission imaging and spectroscopy of comets and of the outer planets form geosynchronous orbit. Such a Hubble-class telescope with a science payload consisting of four UV/EUV spectrographs and a high- resolution imager having 0.06 arcsec spatial resolution can now be built and launched within the budget of a NASA Discovery Mission. Following a one-year science program under the direction of the principle investigator, the SSO would transition to a guest observer facility. Although optimized for cometary and planetary measurements, SSO would have outstanding capability for a variety of astrophysical measurements. SSO would also serve as a prototype for other similar low-cost space observatories that could be optimized for stellar, extragalactic and other applications.

Haisch, Bernhard M.; Robb, Paul N.; Strong, Keith; Shemansky, Donald E.

1998-08-01

374

The realization of an automated data reduction pipeline in IRAF: the PhotMate system  

NASA Astrophysics Data System (ADS)

Developments in imaging technology over the past decade have provided impetus toward the realization of automated data reduction systems within the astronomical community. These developments, in particular advances in CCD technology, have meant that the data envelope associated with even modest observing programmes can reach gigabyte volumes. We describe the development of an automated data reduction system for differential photometry called PhotMate. For issues of reuse and interoperability the system was developed entirely within the IRAF environment and now forms the backbone of our data analysis procedure. We discuss the methodologies behind its implementation and the use of IRAF scripts for the realization of an automated process. Finally, we place the effectiveness of such a system in context by reference to two recent observing runs at the Calar Alto observatory where we tested a new low light level (L3) CCD. It is our belief that this observing campaign is an important indicator of future trends in observational optical astronomy. As the cost of such devices decreases, their usage will increase and with it the volume of data collectively generated, toppling large astronomical projects as the primary data generators.

O'Driscoll, Stephen; Smith, Niall J.

2004-09-01

375

The First High-redshift Quasar from Pan-STARRS  

NASA Astrophysics Data System (ADS)

We present the discovery of the first high-redshift (z > 5.7) quasar from the Panoramic Survey Telescope and Rapid Response System 1 (Pan-STARRS1 or PS1). This quasar was initially detected as an i P1 dropout in PS1, confirmed photometrically with the SAO Wide-field InfraRed Camera at Arizona's Multiple Mirror Telescope (MMT) and the Gamma-Ray Burst Optical/Near-Infrared Detector at the MPG 2.2 m telescope in La Silla. The quasar was verified spectroscopically with the MMT Spectrograph, Red Channel and the Cassegrain Twin Spectrograph at the Calar Alto 3.5 m telescope. Its near-infrared spectrum was taken at the Large Binocular Telescope Observatory (LBT) with the LBT Near-Infrared Spectroscopic Utility with Camera and Integral Field Unit for Extragalactic Research. It has a redshift of 5.73, an AB z P1 magnitude of 19.4, a luminosity of 3.8 × 1047 erg s-1, and a black hole mass of 6.9 × 109 M ?. It is a broad absorption line quasar with a prominent Ly? peak and a very blue continuum spectrum. This quasar is the first result from the PS1 high-redshift quasar search that is projected to discover more than 100 i P1 dropout quasars and could potentially find more than 10 z P1 dropout (z > 6.8) quasars.

Morganson, Eric; De Rosa, Gisella; Decarli, Roberto; Walter, Fabian; Chambers, Ken; McGreer, Ian; Fan, Xiaohui; Burgett, William; Flewelling, Heather; Greiner, Jochen; Hodapp, Klaus; Kaiser, Nick; Magnier, Eugene; Price, Paul; Rix, Hans-Walter; Sweeney, Bill; Waters, Christopher

2012-06-01

376

Feasibility study of home telerehabilitation for physically inactive veterans.  

PubMed

The aim of this study was to develop a system for and determine the feasibility of monitoring home exercise for physically inactive older adults using a Health Buddy (HB) text messaging device (Robert Bosch Healthcare; Palo Alto, California). Questions and messages related to exercise adherence are displayed on the HB screen and participants choose a response by pressing the corresponding button on the device. Responses are transmitted through a landline connection and high-risk responses are highlighted by the system for follow-up. We developed the questions and messages based on input from patient and clinician focus groups. We evaluated feasibility by administering the intervention to inpatient and outpatient adults aged 60 or older. We gave participants a choice of exercise monitoring by HB (n = 20) or telephone (n = 18). The results showed that home exercise monitoring by HB and telephone is safe, as evidenced by low adverse event rates. We saw a decline in exercise adherence rates to both the HB and telephone after 8 weeks, although adherence was better for HB than telephone. Taken together, the results demonstrate the feasibility of using text messaging to monitor home exercise adherence in physically inactive older adults. PMID:20803390

Harada, Nancy D; Dhanani, Shawkat; Elrod, Michelle; Hahn, Theodore; Kleinman, Leonard; Fang, Meika

2010-01-01

377

The lactate paradox revisited in lowlanders during acclimatization to 4100 m and in high-altitude natives  

PubMed Central

Chronic hypoxia has been proposed to induce a closer coupling in human skeletal muscle between ATP utilization and production in both lowlanders (LN) acclimatizing to high altitude and high-altitude natives (HAN), linked with an improved match between pyruvate availability and its use in mitochondrial respiration. This should result in less lactate being formed during exercise in spite of the hypoxaemia. To test this hypothesis six LN (22–31 years old) were studied during 15 min warm up followed by an incremental bicycle exercise to exhaustion at sea level, during acute hypoxia and after 2 and 8 weeks at 4100 m above sea level (El Alto, Bolivia). In addition, eight HAN (26–37 years old) were studied with a similar exercise protocol at altitude. The leg net lactate release, and the arterial and muscle lactate concentrations were elevated during the exercise in LN in acute hypoxia and remained at this higher level during the acclimatization period. HAN had similar high values; however, at the moment of exhaustion their muscle lactate, ADP and IMP content and Cr/PCr ratio were higher than in LN. In conclusion, sea-level residents in the course of acclimatization to high altitude did not exhibit a reduced capacity for the active muscle to produce lactate. Thus, the lactate paradox concept could not be demonstrated. High-altitude natives from the Andes actually exhibit a higher anaerobic energy production than lowlanders after 8 weeks of acclimatization reflected by an increased muscle lactate accumulation and enhanced adenine nucleotide breakdown.

van Hall, G; Lundby, C; Araoz, M; Calbet, J A L; Sander, M; Saltin, B

2009-01-01

378

Accuracy of out-of-field dose calculations by a commercial treatment planning system  

NASA Astrophysics Data System (ADS)

The dosimetric accuracy of treatment planning systems (TPSs) decreases for locations outside the treatment field borders. However, the true accuracy of specific TPSs for locations beyond the treatment field borders is not well documented. Our objective was to quantify the accuracy of out-of-field dose predicted by the commercially available Eclipse version 8.6 TPS (Varian Medical Systems, Palo Alto, CA) for a clinical treatment delivered on a Varian Clinac 2100. We calculated (in the TPS) and determined (with thermoluminescent dosimeters) doses at a total of 238 points of measurement (with distance from the field edge ranging from 3.75 to 11.25 cm). Our comparisons determined that the Eclipse TPS underestimated out-of-field doses by an average of 40% over the range of distances examined. As the distance from the treatment field increased, the TPS underestimated the dose with increasing magnitude--up to 55% at 11.25 cm from the treatment field border. These data confirm that accuracy beyond the treatment border is inadequate, and out-of-field data from TPSs should be used only with a clear understanding of this limitation. Studies that require accurate out-of-field dose should use other dose reconstruction methods, such as direct measurements or Monte Carlo calculations.

Howell, Rebecca M.; Scarboro, Sarah B.; Kry, S. F.; Yaldo, Derek Z.

2010-12-01

379

Photometric and Spectroscopic Modelling of Non-radial Oscillations in the sdB Star PG1605+072  

NASA Astrophysics Data System (ADS)

We present the results of photometric and spectroscopic modelling of nonradial oscillations in subluminous B stars. Time-resolved synthetic spectra for a rotating star showing multi-mode non-radial pulsation are calculated. We use the program package BRUCE developed by R. Townsend (UCL, London) to compute the structure of the rotating and pulsating envelope. A code to construct the rotationally distorted synthetic spectra from these models has been developed by us. The equilibrium grid is distorted by one or more pulsation modes including temperature, velocity and geometric perturbations. We are able to model line profile variations in these stars as well as the photometric changes in different photometric filters. To test our modelling we have chosen the pulsating sdB stars: PG1605+072. which shows a great variety of pulsation modes (> 50). Furthermore it has the longest periods (main mode at P = 480 s) and the largest radial velocity amplitudes (up to 14 km/s). Simultaneous photometric and spectroscopic observations of this object recently obtained at Calar Alto Observatory are also presented.

Falter, S.; Heber, U.; Dreizler, S.; Cordes, O.

380

Spider prey (Araneae) of Trypoxylon (Trypargilum) rogenhoferi (Hymenoptera: Sphecidae) in southeastern Brazil.  

PubMed

Fifty five nests and 216 cells of Trypoxylon (Trypargilum) rogenhoferi were obtained from trap-nests (cut bamboo canes) in Santa Carlota Farm (Itaoca Section = IS and Santana Section = SS), Cajuru and on the São Paulo University Campus, Ribeirão Preto (= RP), both in the State of São Paulo, Brazil (Sept. 1993-Oct. 1995). The prey (spiders) of 40 cells from IS, 58 from SS and 39 from RP were identified. The greatest nesting frequency occurred during the hot and wet season (September to April). T. rogenhoferi preyed upon individuals of five spider families, with Araneidae (orb-weaver spiders) being the most frequent (99.6%). Alpaida aff. negro (58%) was the most frequently collected species in IS, followed by A. alto (24.8%); in SS (59.6%) and RP (64.7%) the most frequent species was A. veniliae, followed in SS by A. aff. negro (14.9%) and in RP by A. leucogramma (13.5%). The size of reproductive niches, H' = 1.25 (IS), H' = 1.30 (SS) and H' = 1.29 (RP) were not significantly different. There was a positive correlation between the reproductive niche width (H') and evenness. PMID:11354972

Camillo, E; Brescovit, A D

381

Multisite evaluation of a monoclonal antibody reagent (Syva) for rapid diagnosis of cytomegalovirus in the shell vial assay.  

PubMed Central

A pre-cytopathic effect (CPE) monoclonal antibody reagent (Syva Co., Palo Alto, Calif.) was evaluated in four laboratories for the rapid detection of cytomegalovirus (CMV) in shell vial cell cultures at 16 to 24 h and 40 to 48 h postinoculation. Results were compared with those obtained by inoculation of the specimen into conventional tube cell cultures that were examined for the presence of typical CMV CPE and subsequently tested by reaction with the monoclonal antibody reagent in an indirect immunofluorescence test. Of 937 specimens, CMV was positive in 184 (20%). CMV was detected twice as frequently in shell vials only (n = 29) as in conventional tube cell cultures (n = 14). Pre-CPE shell vial assay was 91% sensitive (range, 84 to 98%) and 96% specific (range, 93 to 98%) compared with the detection of CPE in conventional tube cell cultures. Overall, 137 of 166 (83%) and 143 of 166 (86%) of the CMV strains were detected at 16 to 24 h and 40 to 48 h postinoculation, respectively. The Syva reagent produced sensitive and specific results for the rapid detection of CMV infection in shell vial cell cultures and reliably confirmed the presence of the virus as detected by CPE in conventional tube cell cultures.

Jespersen, D J; Drew, W L; Gleaves, C A; Meyers, J D; Warford, A L; Smith, T F

1989-01-01

382

Analysis techniques of charging damage studied on three different high-current ion implanters  

NASA Astrophysics Data System (ADS)

One of the Greater Silicon Valley Implant Users' Group's recent activities has been to sponsor a round-robin on charging damage, where identical wafers were implanted on three different state-of-the-art, high-current ion implanters. The devices studied were thin-dielectric (250 Å SiO2), polysilicon-gate MOS capacitors isolated by thick field oxide. The three implanters involved were the Varian/Extrion 160XP, the Eaton/Nova 10-80, and the Applied Materials PI9000. Each implanter vendor was given 48 wafers to implant with 100 keV As+ ions at a dose of 1 × 1016 cm-2. Parameters that were varied include the beam current, electron flood gun current, and chamber pressure. The charge-to-breakdown, breakdown voltage, and leakage current of several devices before anneal have been measured. The results from these tests were inconclusive as to the physical mechanism of charging and as to the effectiveness of techniques to reduce its impact on devices. However, the methodology of this study is discussed in detail to aid in the planning of future experiments. Authors' industrial affiliations: S.B. Felch, Varian Research Center, 611 Hansen Way, Palo Alto, CA 94303, USA; L.A. Larson, National Semiconductor Corp., P.O. Box 58090, Santa Clara, CA 95052-8090, USA; M.I. Current, Applied Materials, 3050 Bowers Ave., Santa Clara, CA 95054, USA; D.W. Lindsey, Eaton/NOVA, 931 Benicia Ave, Sunnyvale, CA 94086, USA.

Felch, S. B.; Larson, L. A.; Current, M. I.; Lindsey, D. W.

1989-02-01

383

Multi-Conjugate Adaptive Optics with Two Deformable Mirrors - Requirements and Performance  

NASA Astrophysics Data System (ADS)

In order to increase the corrected field of view of an adaptive optics (AO) system, several deformable mirrors (DM) have to be placed in the conjugate planes of the dominant turbulent layers (multi-conjugate adaptive optics, MCAO (Beckers, 1988)). The performance of MCAO systems depends on the quality of the wavefront sensing of the individual layers and on the number of corrected modes in each individual layer as in single layer AO systems. In addition, the increase in corrected field of view depends on the number of guide stars providing information about the turbulence over a sufficiently large area in each turbulent layer. In this article, we investigate these points and provide formulae for calculating the increased field of view with a new approach using the spatial correlation functions of the applied polynomials (e.g. Zernike). We also present a new scheme of measuring the individual wavefront distortion of each of the dominant layers with a Shack-Hartmann-Curvature Sensor using gradient information as well as scintillation. An example for the performance of a two layer MCAO system is given for the 3.5-m telescope of the Calar Alto Observatory, Spain, using a measured C_n^2-profile. The corrected field of view in K-band (2.2 ?m) can be as large as 3 arcmin with a Strehl ratio above 60%.

Berkefeld, Thomas; Glindemann, Andreas; Hippler, Stefan

2001-02-01

384

3D: The New MPE Near-Infrared Field Imaging Spectrometer  

NASA Astrophysics Data System (ADS)

3D is a next-generation near-IR spectrometer developed at the MPE which offers, in a single integration, the opportunity to image an 8({') '} times 8({') '} field across almost the entire K-band at a simultaneous spatial resolution of 0.5({') '} . The basic principle of the instrument is relatively simple. The two dimensional image from the telescope is sliced into 16 0.5({') '} wide strips which are then aligned optically on top of each other forming a single long slit. This long slit is used as the input for a grating spectrometer which images it onto a 2 dimensional detector array. Each detector row then represents the spectrum of one spatial (0.5({') '} element of the two dimensional field of view. The central part of the optical system is the image slicer which is made of two complex plane mirror systems consisting of 16 segments each. The detector is a NICMOS III HgCdTe array with 256times 256 pixels. In the spectral domain the spectrometer will provide a resolving power of R=1000. The instrument was commissioned at the 3.5m Calar Alto telescope in late November 1993. Here we present highlights of the astronomical results obtained during this run.

Cameron, M.; Weitzel, L.; Krabbe, A.; Genzel, R.; Drapatz, S.

1993-12-01

385

Not every cell is sacred: a reply to Charo.  

PubMed

Massimo Reichlin, in an earlier article in this journal, defended a version of the 'argument from potential' (AFP), which concludes that the human embryo should be protected from the moment of conception. But R. Alto Charo, in her essay entitled 'Every Cell is Sacred: Logical Consequences of the Argument from Potential in the Age of Cloning', claims that versions of the AFP like Reichlin's are vulnerable to a rather embarrassing problem: with the advent of human cloning, such versions of the AFP entail that every somatic cell in the human body ought to be protected. Since this entailment is clearly absurd, Charo argues, these versions of AFP should be rejected. I argue that the reasons Charo cites for believing in this entailment are inconclusive. For example, the four reasons she gives for doubting any differences between the nature of skin cells and zygotes are ultimately unconvincing. Against Charo, I maintain that there is a relevant distinction between the sort of potential possessed by the somatic cell and the sort of potential possessed by the early human embryo. Since only the latter sort of potential falls within the scope of the AFP, the alleged absurd entailment Charo invites us to consider is no entailment at all. Hence the AFP cannot be rejected on the grounds Charo advances. Even in an age of cloning, the claim that some cells are 'sacred' because of their potential does not entail the claim that every cell is sacred. PMID:17042111

DiSilvestro, Russell

2006-06-01

386

The Massive Star Forming Region S106: The Importance of High-Resolution  

NASA Astrophysics Data System (ADS)

The paper discusses the results of our high-resolution campaign on S106. NIR observations were made using the Adaptive Optics system ALFA - though only in ``active optics mode'' due to lack of suitable guide stars - on Calar Alto's 3.5 m telescope. The resulting broad- and narrow-band NIR images exhibit resolutions between 0.''3 and 0.''8. We will discuss the stellar content of the region and the small-scale structure concerning extinction (= molecular material) and ionization (= gas). Special attention is paid to the central source of S106, IRS4. This source is generally taken to be a massive young star of spectral type O8 and debate is going on whether this is a prototypical example of a massive star + circumstellar (accretion-)disk or whether the torus-like structure in the large-scale molecular material distribution with a clearly defined equatorial plane is more or less independent of the central star. We will report new evidence on this subject that can be drawn from our highest-resolution images and polarization maps.

Feldt, M.; Puga, E. A.; Weiß, R.; Hippler, S.

387

San Andreas drilling sites selected  

NASA Astrophysics Data System (ADS)

A new initiative for drilling and coring directly into the San Andreas fault at depths up to 10 km is being proposed by an international team of scientists led by Mark Zoback, Stanford University; Steve Hickman and Bill Ellsworth, U.S. Geological Survey; and Lee Younker, Lawrence Livermore Laboratory. In addition to exhuming samples of fault rock and fluids from seismogenic depths, the hole will be used to make a wide range of geophysical measurements within the fault zone and to monitor the fault zone over time. Four areas along the San Andreas have been selected as candidates for deep drilling: the Mojave segment of the San Andreas between Leona Valley and Big Pine, the Carrizo Plain, the San Francisco Peninsula between Los Altos and Daly City, and the Northern Gabilan Range between the Cienga winery and Melendy Ranch. These sites were chosen from an initial list compiled at the International Fault Zone Drilling Workshop held in Asilomar, Calif., in December 1992 and at meetings held this winter and spring in Menlo Park, Calif.

Ellsworth, Bill; Zoback, Mark

388

Mometasone implant for chronic rhinosinusitis  

PubMed Central

The Propel mometasone-eluting stent (Intersect ENT, Palo Alto, CA) is the first Food and Drug Administration-approved device for delivering steroid medication into the ethmoid cavity following surgery. The implant is composed of a biodegradable polymer in a lattice pattern that expands in a spring-like fashion to conform to the walls of a dissected ethmoid cavity and contains a total of 370 ?g of mometasone furoate designed for gradual release over 30 days. The purpose of this article is to review the mode of action and the evidence supporting the efficacy of this novel technology. Three recently published clinical trials have demonstrated that the mometasone-eluting stent produced statistically significant reductions in inflammation, polyp formation, and postoperative adhesions. In addition, the implant has been found to significantly reduce the need for postoperative administration of oral steroids and to decrease the frequency of postoperative lysis of adhesions. Minimal adverse effects were reported in these trials and included infection, crusting, and granulation tissue formation. Although the placement of steroid-impregnated packing, stents, sponges, and gels has previously been used in the postoperative sinus cavities, the Propel mometasone-eluting stent introduces a new mechanism for localized and controlled delivery of topical therapy directly to the nasal mucosa for chronic rhinosinusitis.

Wei, Calvin C; Kennedy, David W

2012-01-01

389

Proceedings: Engineering characterization of small-magnitude earthquakes  

SciTech Connect

A three-day workshop was held on the engineering characterization of small-magnitude earthquakes in Palo Alto on January 27-29, 1987. The workshop was sponsored by the Electric Power Research Institute. The objective of the workshop was to consider a broad range of issues that could provide insight to the engineering significance of ground motion generated by small-magnitude earthquakes. Based on the presentations at the meeting it was intended to develop a strategy to select a lower-bound magnitude for use in seismic hazard assessments. An Advisory Committee reviewed the information presented at the workshop and provided recommendations concerning the level of earthquake magnitude that may be damaging to nuclear power plant structures and equipment and a strategy to establish a sound basis to determine the lower-bound magnitude. These proceedings contain the technical papers presented at the workshop, summaries of the discussion sessions and the recommendations of the Advisory Committee. Individual papers were processed separately for the data base.

McCann, M.W. Jr.; Reed, J.W.

1987-01-01

390

New read-out electronics concept for visual and infrared detector arrays in astronomical instrumentation  

NASA Astrophysics Data System (ADS)

With the building of scientific camera systems for astronomical purposes in mind, the Max-Planck-Institut fuer Astronomie (MPIA) has recently started developing new visual and infrared detector Read-out systems. Due to the modular design, the electronics components can be configured for a wide range of currently available IR-detectors and CCDs. The new Read-out Electronics are able to handle single or multiple detector systems with up to 144 input channels, feature high-speed data transfer and low power dissipation and additionally the system size is small and lightweight. The design is divided in four functional groups: controller board with variable Pattern Generator and fast fiber link, clock/bias board, analog to digital converter board and the PCI data receiver board which writes the incoming data into the computer memory. This design is highly versatile and allows for a wide variety of applications. The high data transfer rate, small size and low heat dissipation makes these Read-out Electronics ideal for relatively large focal plane arrays. The first instrument running with the new Read-out Electronics will be PANIC (Panoramic Near Infrared Camera) at the 2.20 m telescope on Calar Alto.

Wagner, Karl; Mall, Ulrich; Ramos, José; Klein, Ralf

2008-08-01

391

Soft X Ray Telescope (SXT) focus error analysis  

NASA Astrophysics Data System (ADS)

The analysis performed on the soft x-ray telescope (SXT) to determine the correct thickness of the spacer to position the CCD camera at the best focus of the telescope and to determine the maximum uncertainty in this focus position due to a number of metrology and experimental errors, and thermal, and humidity effects is presented. This type of analysis has been performed by the SXT prime contractor, Lockheed Palo Alto Research Lab (LPARL). The SXT project office at MSFC formed an independent team of experts to review the LPARL work, and verify the analysis performed by them. Based on the recommendation of this team, the project office will make a decision if an end to end focus test is required for the SXT prior to launch. The metrology and experimental data, and the spreadsheets provided by LPARL are used at the basis of the analysis presented. The data entries in these spreadsheets have been verified as far as feasible, and the format of the spreadsheets has been improved to make these easier to understand. The results obtained from this analysis are very close to the results obtained by LPARL. However, due to the lack of organized documentation the analysis uncovered a few areas of possibly erroneous metrology data, which may affect the results obtained by this analytical approach.

Ahmad, Anees

1991-03-01

392

Proceedings: Fourteenth annual EPRI conference on fuel science  

SciTech Connect

EPRI's Fourteenth Annual Contractors' Conference on Fuel Science was held on May 18--19, 1989 in Palo Alto, CA. The conference featured results of work on coal science, coal liquefaction, methanol production, and coal oil coprocessing and coal upgrading. The following topics were discussed: recent development in coal liquefaction at the Wilsonville Clean Coal Research Center; British coal's liquid solvent extraction (LSE) process; feedstock reactivity in coal/oil co-processing; utility applications for coal-oil coprocessed fuels; effect of coal rank and quality on two-stage liquefaction; organic sulfur compounds in coals; the perchloroethylene refining process of high-sulfur coals; extraction of sulfur coals; extraction of sulfur from coal; agglomeration of bituminous and subbituminous coals; solubilization of coals by cell-free extracts derived from polyporus versicolor; remediation technologies and services; preliminary results from proof-of-concept testing of heavy liquid cyclone cleaning technology; clean-up of soil contaminated with tarry/oily organics; midwest ore processing company's coal benefication technology: recent prep plant, scale and laboratory activities; combustion characterization of coal-oil agglomerate fuels; status report on the liquid phase methanol project; biomimetic catalysis; hydroxylation of C{sub 2} {minus} C{sub 3} and cycloc{sub 6} hydrocarbons with Fe cluster catalysts as models for methane monooxygenase enzyme; methanol production scenarios; and modeling studies of the BNL low temperature methanol catalyst. Individual projects are processed separately for the data bases.

Not Available

1990-05-01

393

Land application uses for dry flue gas desulfurization by-products: Phase 3  

SciTech Connect

New flue gas desulfurization (FGD) scrubbing technologies create a dry, solid by-product material consisting of excess sorbent, reaction product that contains sulfate and sulfite, and coal fly ash. Generally, dry FGD by-products are treated as solid wastes and disposed in landfills. However, landfill sites are becoming scarce and tipping fees are constantly increasing. Provided the environmental impacts are socially and scientifically acceptable, beneficial uses via recycling can provide economic benefits to both the producer and the end user of the FGD. A study titled ''Land Application Uses for Dry Flue Gas Desulfurization By-Products'' was initiated in December, 1990 to develop and demonstrate large volume, beneficial uses of FGD by-products. Phase 1 and Phase 2 reports have been published by the Electric Power Research Institute (EPRI), Palo Alto, CA. Phase 3 objectives were to demonstrate, using field studies, the beneficial uses of FGD by-products (1) as an amendment material on agricultural lands and on abandoned surface coal mine land, (2) as an engineering material for soil stabilization and raid repair, and (3) to assess the environmental and economic impacts of such beneficial uses. Application of dry FGD by-product to three soils in place of agricultural limestone increased alfalfa (Medicago sativa L.) and corn (Zea may L.) yields. No detrimental effects on soil and plant quality were observed.

Dick, W.; Bigham, J.; Forster, R.; Hitzhusen, F.; Lal, R.; Stehouwer, R.; Traina, S.; Wolfe, W.; Haefner, R.; Rowe, G.

1999-01-31

394

Biotech's Chinese connection  

SciTech Connect

Hong Kong last month opened the Hong Kong Institute of Biotechnology (HKIB), a nonprofit R and D center. By combining Chinese expertise in medicinal compounds and cell culturing with Western technical and marketing skills, the institute hopes to develop products that could be licensed to Hong Kong or Western films. The institute is also developing experimental cell lines and making genetically engineered versions of promising compounds, taking advantage of the cell-culturing and cloning skills that are highly developed on the mainland. The Shanghai contingent is already involved in one of the institute's projects, an effort to transfer human genes into mouse fibroblasts to create cell lines for research on the molecular mechanisms of learning and memory. Other Chinese researchers are taking part in HKIB's joint venture with Syntex, which was signed last April. The mainland researchers extract candidate medicinal compounds from plants and microorganisms. In Hong Kong, the compounds are tested for their effects on neurotransmitter receptors, while Syntex scientists in Palo Alto study how the same compounds affect enzyme activity and whole cells.

Hodgson, G.

1992-03-27

395

Effect of patient characteristics on performance of an enzyme immunoassay for detecting cervical Chlamydia trachomatis infection.  

PubMed Central

We compared the performance of a commercial enzyme immunoassay (EIA) (Chlamydiazyme; Abbott Diagnostics, North Chicago, Ill.) with that of cell culture for the detection of Chlamydia trachomatis cervical infection in 1,417 women attending public health clinics. Confirmatory chlamydial testing by a direct fluorescent-antibody test (MicroTrak; Syva Co., Palo Alto, Calif.) was performed on specimens from women who had positive EIAs. Overall, only 57% of women who had a positive chlamydial test by cell culture were also positive by EIA. We noted a strong association between the number of chlamydial inclusions in cell culture and a positive EIA outcome. The proportion of culture-positive women who also had a positive EIA declined with age and a history of previous sexually transmitted disease and increased among oral contraceptive users. The results of direct fluorescent-antibody confirmatory testing suggested that cell culture was also insensitive for the detection of C. trachomatis infection. Our observations demonstrate that the performance of the chlamydial EIA may vary greatly with individual patient characteristics and that the utility of EIA as a screening test may be limited, especially in older women.

Magder, L S; Klontz, K C; Bush, L H; Barnes, R C

1990-01-01

396

Evaluation of a nonisotopic probe for detection of Chlamydia trachomatis in endocervical specimens.  

PubMed Central

A nonisotopic probe (Gen-Probe PACE; Gen-Probe, Inc., San Diego, Calif.) for detection of Chlamydia trachomatis in endocervical specimens was evaluated in 344 women attending a dysplasia clinic or an obstetrics clinic and 158 women who visited an emergency room. For each patient, the probe, a tissue cell culture, and a direct immunofluorescent-antibody test (DFA; MicroTrak; Syva Co., Palo Alto, Calif.) were used. C. trachomatis was detected in 54 specimens by at least one method. Forty-four, 44, and 37 specimens were positive by culture, probe, and DFA, respectively, and 31 were positive by all three methods. Considering culture-positive plus both probe- and DFA-positive results as the "gold standard," we determined the overall sensitivity, specificity, and positive and negative predictive values of the probe to be 80, 98, 82, and 98%, respectively. These values were 94, 98, 84, and 99%, respectively, in emergency room patients and 71, 98, 80, and 97%, respectively, in clinic patients. The sensitivities, specificities, and negative predictive values of the DFA and probe were comparable. The positive predictive values of the DFA in all patients and in emergency room and clinic patients were 97, 100, and 95%, respectively. Given the number of probe-positive results that were not confirmed by culture, we do not recommend using the Gen-Probe PACE to screen for C. trachomatis in women with a low to moderate risk for infection.

Woods, G L; Young, A; Scott, J C; Blair, T M; Johnson, A M

1990-01-01

397

Recent improvements in blast furnace operation within the AHMSA/GAN, Monclova Mexico works  

SciTech Connect

Following the privatization of Altos Hornos de Mexico in November 1991 four areas were chosen to improve blast furnace performance and hot metal costs. These areas included improvement of pellet quality, start of oil-gas co-injection in the blast furnace, improved control of gas flow in the blast furnace and start of monitoring program to predict the remaining life of the hearth of the major blast furnace at AHMSA. The efforts resulted in the following improvements in the first half of 1992: production level increased to 2.4 ton/m[sup 3]/24 hrs; moreover, the annual production record of blast furnace 5 (hearth diameter 11.2 m, 37 ft) set in 1992, was 1.639 mln tonnes; coke rates decreased by 60 kg/tonne, half of which was due to process improvements and the other half to injection of oil; silicon standard deviations decreased from 0.22% in 1991 to 0.20% in 1992; hot metal costs decreased with 10.6%; and the major reline of BF 5 can be postponed by at least 1.5 year.

Morales, J.M.; Dominguez, H.; Geerdes, M.

1993-01-01

398

Improvements in blast furnace operation at AHMSA Monclova  

SciTech Connect

Following the privatization of Altos Hornos de Mexico, S.A. de C.V. (AHMSA) in Nov. 1991, four areas were chosen to improve blast furnace performance and hot metal costs. These areas included improvement of pellet quality, start of oil-gas co-injection, improved control of gas flow in the blast furnace and start of monitoring program to predict the remaining life of the hearth of No. 5 blast furnace. These efforts resulted in the following improvements in the first half of 1992: Production level increased to 2.4 tonnes/cu metre/24 hr with a 1992 annual production record from No. 5 furnace of 1.639 million tonnes; Coke rates decreased by 60 kg/tonne, half of which was due to process improvements and the other half to injection of oil; Silicon standard deviations decreased from 0.22% in 1991 to 0.20% in 1992; Hot metal costs decreased by 10.6%; and The major reline of No. 5 furnace postponed by at least 1.5 years. The improvement of the blast furnace process was not limited to the larger No. 5 furnace. Similar tends can be observed with No. 4 furnace which will also be equipped with oil injection. For the future, programs have been prepared to increase injection rates, improve casthouse operation and increase process stability.

Morales, J.M.; Dominguez, H. (Altos Hornos de Mexico S.A. de C.V., Monclova (Mexico). Monclova Works); Geerdes, M. (Hoogovens Technical Services B.V., Monclova (Mexico))

1994-10-01

399

Recent improvements in blast furnace operation at the Ahmsa Monclova Works  

SciTech Connect

Following the privatization of Altos Hornos de Mexico in Nov. 1991, four areas were selected to improve blast furnace performance and hot metal costs. These areas included: improvements of pellet quality; start of oil-gas coinjection; improved control of gas flow in the blast furnace; and start of monitoring program to predict the remaining life of the hearth of the major blast furnace. The efforts resulted in the following improvements in the first half of 1992: (1) Production level increased to 2.4 tonnes/cu meter/24 hr. Annual production record of blast furnace No. 5 (hearth diameter 11.2 meter), set in 1992, was 1,639 million tonnes. (2) Coke rates decreased by 60 kg/tonne, half of which was due to process improvements and the other half to injection of oil. (3) Silicon standard deviations decreased from 0.22% in 1991 to 0.20% in 1992. (4) Hot metal costs decreased by 10.6%. (5) The major reline of blast furnace No. 5 can be postponed by at least 1.5 years.

Morales-Yanez, J.M.; Dominguez-Lara, H.; Geerdes, M. (Ahmsa/Hoogovens Technical Services, Monclova (Mexico))

1993-07-01

400

Status report of PYRAMIR: a near-infrared pyramid wavefront sensor for ALFA  

NASA Astrophysics Data System (ADS)

A new wavefront sensor based on the pyramid principle is being built at MPIA, with the objective of integration in the Calar Alto adaptive optics system ALFA. This sensor will work in the near-infrared wavelength range (J, H and K bands). We present here an update of this project, named PYRAMIR, which will have its first light in some months. Along with the description of the optical design, we discuss issues like the image quality and chromatic effects due to band sensing. We will show the characterization of the tested pyramidal components as well as refer to the difficulties found in the manufacturing process to meet our requirements. Most of the PYRAMIR instrument parts are kept inside a liquid nitrogen cooled vacuum dewar to reduce thermic radiation. The mechanical design of the cold parts is described here. To gain experience, a laboratory pyramid wavefront sensor was set up, with its optical design adapted to PYRAMIR. Different tests were already performed. The electronic and control systems were designed to integrate in the existing ALFA system. We give a description of the new components. An update on the future work is presented.

Costa, Joana B.; Feldt, Markus; Wagner, Karl; Bizenberger, Peter; Hippler, Stefan; Baumeister, Harald; Stumpf, Micaela; Ragazzoni, Roberto; Esposito, Simone; Henning, Thomas

2004-10-01

401

Characterization, testing, and operation of Omega2000 wide-field infrared camera  

NASA Astrophysics Data System (ADS)

Omega2000 is the first near infrared (NIR) wide field camera installed on the 3.5 m telescope at Calar Alto which operates with a 2kx2k HAWAII-2 FPA. Each component of the camera system must suit high requirements to exploit the facilities provided by the imaging sensor. To meet these requirements was a great challenge in design and realization of the optics, the mechanical part and the electronics. The cryogenic optical system with a warm mirror baffle can produce excellent optical quality and high sensitivity over the whole 15.4x15.4 arcmin field of view. The readout electronics together with the camera control software provide multi functional data acquisition and the camera control software can perform the readout and on-line data reduction simultaneously at a high data rate. Different operational and readout modes of the data acquisition of the detector both for engineering and scientific purpose were implemented, tested and optimized and the characteristics of three HAWAII-2 detectors were also determined in their hardware and software environment. Initial astronomical observations were carried out successfully in autumn 2003.

Kovács, Zoltán; Mall, Ulrich; Bizenberger, Peter; Baumeister, Harald; Röser, Hermann-Josef

2004-09-01

402

Chopping secondary mirror control systems for the W. M. Keck Telescopes  

NASA Astrophysics Data System (ADS)

The Keck 1 chopping secondary was built by the Palo Alto Research Laboratories of the Lockheed (now Lockheed Martin) Missiles and Space Company. The only software component of the delivered system is a proprietary error correction algorithm; Keck wrote software to generate acceleration-limited azimuth and elevation demands, to rotate these demands as a function of telescope position, to interact with the error correction system, and to mange hardware start-up and shutdown. The Keck 2 chopping secondary, also built by Lockheed, was originally conceived as an infrared fast steering mechanism (IFSM) and is simpler than the Keck 1 system, with lower power and acceleration limits and, therefore, lower chop amplitude and frequency specifications. As far as possible, it provides the same external interfaces as the Keck 1 system. A new EPICS- based telescope control system has been written for Keck 2 and was retrofitted on Keck 1 in March 1997. The Keck 1 chopper control software has been converted to the EPICS environment and, at the same time, altered so that the same software supports both choppers. This conversion has retained as much as possible of the complex real-time code of the old system while at the same time fully utilizing EPICS facilities. The paper presents more details of both the old and the new systems and illustrates how the new system is simpler than the old as well as being much better integrated into the overall telescope control system. Operational experience is presented.

Lupton, William

1997-09-01

403

Prognostic Implications of Q Waves and T-Wave Inversion Associated With Early Repolarization  

PubMed Central

Objective To evaluate the prevalence of early polarization (ER) in a stable population and to evaluate the prognostic significance of the association or absence of Q waves or T-wave inversion (TWI). Patients and Methods In this retrospective study performed at the university-affiliated Palo Alto Veterans Affairs Health Care Center from March 1, 1987, through December 31, 1999, we evaluated outpatient electrocardiograms. Vital status and cause of death were determined in all patients, with a mean ± SD follow-up of 7.6±3.8 years. Results Of the 29,281 patients, 87% were men and 13% were African American. Inferior or lateral ER was present in 664 patients (2.3%): in inferior leads in 185 (0.6%), in lateral leads in 479 (1.6%) , and in both inferior and lateral leads in 163 (0.6%). Only when Q waves or TWI accompanied ER was there an increased risk of cardiovascular death (Cox proportional hazards regression model, 5.0; 95% confidence interval, 3.4-7.2; P<.001). Conclusion Common patterns of ER without concomitant Q waves or TWI are not associated with increased risk of cardiovascular death; however, when either occurs with ER, there is a hazard ratio of 5.0. These findings confirm that ER is a benign entity; however, the presence of Q waves or TWI with ER is predictive of increased cardiovascular death.

Uberoi, Abhimanyu; Sallam, Karim; Perez, Marco; Jain, Nikhil A.; Ashley, Euan; Froelicher, Victor

2012-01-01

404

Are the yips a task-specific dystonia or "golfer's cramp"?  

PubMed

This study compared golfers with and without the yips using joint movement and surface electromyographic detectors. Fifty golfers (25 with and 25 without complaints of the yips) were studied while putting. All putts were videotaped. Surface electromyography assessed arm cocontraction. A CyberGlove II (Immersion Technologies, Palo Alto, CA) assessed right-arm angular movements. Primary analysis was done by subjective complaint of the yips, whereas secondary analysis was done by video evidence of an involuntary movement. When grouped by subjective complaints, there were no differences in any movement parameter. When grouped by video evidence of an involuntary movement, yips cases had more (P < 0.001) angular movement in wrist pronation/supination and a trend (P = 0.08) for wrist flexor/extensor cocontraction (yips: 7 of 17, 41.2%; no yips: 6 of 33, 18.2%). Golfers with video evidence of an involuntary movement while putting have excessive rotation of the right wrist in a pronation/supination motion and, as previously reported, a trend for wrist flexor/extensor cocontraction. PMID:21674625

Adler, Charles H; Crews, Debra; Kahol, Kanav; Santello, Marco; Noble, Brie; Hentz, Joseph G; Caviness, John N

2011-06-14

405

Ensino e divulgação de astronomia no Planetário de Campinas  

NASA Astrophysics Data System (ADS)

Projeto desenvolvido em 1981 por professores da Unicamp, sob a coordenação do Prof. Dr. Carlos Alfredo Argüello propunha a instalação de um Planetário em Campinas. Convênio firmado em 1982 entre a Unicamp, a Prefeitura de Campinas, a Funcamp e a Academia de Ciências do Estado de São Paulo, possibilitou a aquisição de um planetário Zeiss ZKP2, através do MEC, e em 28 de outubro de 1987 foi inaugurado o Planetário de Campinas. Desde então várias atividades de ensino e divulgação da Astronomia foram desenvolvidas regularmente. A verificação dos registros das atividades realizadas mostra um alto índice de atendimento, considerada a capacidade das instalações (sala de projeção para 60 pessoas, auditório com 45 poltronas e hall de exposições). As atividades dirigidas ao público, estudantes e professores, atenderam cerca de 400.000 participantes nos quase 16 anos de sua existência. Além de sessões públicas e escolares, com duração de 1 hora, são oferecidas às escolas vários outros tipos de atividades, com duração de 2,5 horas. Abordam diversos temas e são dirigidas a diferentes níveis de escolaridade. Cursos para o público e para professores, palestras, exposições e eventos especiais completam o quadro de atividades regulares. Mesmo enfrentando quase sempre dificuldades financeiras e administrativas verifica-se que o Planetário de Campinas realizou um trabalho quantitativamente e qualitativamente satisfatório, prestando bom serviços à comunidade de Campinas e de outras cidades de São Paulo e outros Estados. Isso é também atestado pela grande procura de reservas para suas atividades.

Faria, R. P.

2003-08-01

406

High-resolution shallow reflection seismic image and surface evidence of the Upper Tiber Basin active faults (Northern Apennines, Italy)  

USGS Publications Warehouse

Shallow seismic reflection prospecting has been carried out in order to investigate the faults that bound to the southwest and northeast the Quaternary Upper Tiber Basin (Northern Apennines, Italy). On the northeastern margin of the basin a ??? 1 km long reflection seismic profile images a fault segment and the associated up to 100 meters thick sediment wedge. Across the southwestern margin a 0.5 km-long seismic profile images a 50-55??-dipping extensional fault, that projects to the scarp at the base of the range-front, and against which a 100 m thick syn-tectonic sediment wedge has formed. The integration of surface and sub-surface data allows to estimate at least 190 meters of vertical displacement along the fault and a slip rate around 0.25 m/kyr. Southwestern fault might also be interpreted as the main splay structure of regional Alto Tiberina extensional fault. At last, the 1917 Monterchi earthquake (Imax=X, Boschi et alii, 2000) is correlable with an activation of the southwestern fault, and thus suggesting the seismogenic character of this latter.

Donne, D. D.; Plccardi, L.; Odum, J. K.; Stephenson, W. J.; Williams, R. A.

2007-01-01

407

Visual symptomatology and referral patterns for Operation Iraqi Freedom and Operation Enduring Freedom veterans with traumatic brain injury.  

PubMed

Advances in protective armor technology and changes in the "patterns of war" have created a population of Operation Iraqi Freedom/Operation Enduring Freedom (OIF/OEF) veterans with traumatic brain injury (TBI) that provide a unique challenge to Department of Veterans Affairs (VA) healthcare practitioners. The purpose of the study was to determine the frequency of symptomatic ocular and visual sequelae of TBI in OIF/OEF veterans at the Portland VA Medical Center, a Polytrauma Support Clinic Team site. A retrospective analysis of 100 OIF/OEF veterans with TBI was conducted to determine the prevalence of ocular and visual complaints. Referral patterns were also investigated. Visual symptoms were reported in approximately 50% of veterans with TBI. Loss of consciousness, but not number of deployments or number of blast exposures, was found to have a statistically significant association with severity of reported visual symptoms. The most commonly reported symptoms included blurred vision (67%), photosensitivity (50%), and accommodative problems (40%). Visual symptoms of OIF/OEF veterans at the Portland VA Medical Center are reported at slightly lower rates than similar studies conducted at the Palo Alto and Edward Hines Jr VA facilities. PMID:23341280

Bulson, Ryan; Jun, Weon; Hayes, John

2012-01-01

408

Evaluation of a PCR-RFLP-ITS2 assay for discrimination of Anopheles species in northern and western Colombia.  

PubMed

Anopheles mosquitoes are routinely identified using morphological characters of the female that often lead to misidentification due to interspecies similarity and intraspecies variability. The aim of this work was to evaluate the applicability of a previously developed PCR-RFLP-ITS2 assay for accurate discrimination of anophelines in twelve localities spanning three Colombian malaria epidemiological regions: Atlantic Coast, Pacific Coast, and Uraba-Bajo Cauca-Alto Sinu region. The evaluation of the stability of the PCR-RFLP patterns is required since variability of the ITS2 has been documented and may produce discrepancies in the patterns previously reported. The assay was used to evaluate species assignation of 939 mosquitoes identified by morphology. Strong agreement between the morphological and molecular identification was found for species Anopheles albimanus, Anopheles aquasalis, Anopheles darlingi and Anopheles triannulatus s.l. (p?0.05, kappa=1). However, disagreement was found for species Anopheles nuneztovari s.l., Anopheles neomaculipalpus, Anopheles apicimacula and Anopheles punctimacula (p?0.05; kappa ranging from 0.33 to 0.80). The ITS2-PCR-RFLP assay proved valuable for discriminating anopheline species of northern and western Colombia, especially those with overlapping morphology in the Oswaldoi Group. PMID:21345325

Cienfuegos, Astrid V; Rosero, Doris A; Naranjo, Nelson; Luckhart, Shirley; Conn, Jan E; Correa, Margarita M

2011-02-21

409

CARMENES. IV: instrument control software  

NASA Astrophysics Data System (ADS)

The overall purpose of the CARMENES instrument is to perform high-precision measurements of radial velocities of late-type stars with long-term stability. CARMENES will be installed in 2014 at the 3.5 m telescope in the German- Spanish Astronomical Center at Calar Alto observatory (CAHA, Spain) and will be equipped with two spectrographs in the near-infrared and visible windows. The technology involved in such instrument represents a challenge at all levels. The instrument coordination and management is handled by the Instrument Control System (ICS), which is responsible of carrying out the operations of the different subsystems and providing a tool to operate the instrument from low to high user interaction level. The main goal of the ICS and the CARMENES control layer architecture is to maximize the instrument efficiency by reducing time overheads and by operating it in an integrated manner. The ICS implements the CARMENES operational design. A description of the ICS architecture and the application programming interfaces for low- and high-level communication is given. Internet Communications Engine is the technology selected to implement most of the interface protocols.

Guàrdia, Josep; Colomé, Josep; Ribas, Ignasi; Hagen, Hans-Jürgen; Morales, Rafael; Abril, Miguel; Galadí-Enríquez, David; Seifert, Walter; Sánchez Carrasco, Miguel A.; Quirrenbach, Andreas; Amado, Pedro J.; Caballero, Jose A.; Mandel, Holger

2012-09-01

410

Comportamiento Sexual y Autoeficacia para la Negociaci?n de Sexo M?s Seguro en Personas Heterosexuales  

PubMed Central

La autoeficacia se le ha identificado como uno de los factores que puede facilitar o dificultar llevar a cabo sexo más seguro. Estudios revelan que las personas que están el relaciones estables usan métodos de protección menos frecuente que quienes tienen parejas casuales. Realizamos un estudio con 447 personas heterosexuales activas sexualmente. Les administramos un cuestionario dirigido a medir el comportamiento sexual, el uso del condón masculino y la práctica de la masturbación mutua, y la autoeficacia para llevar a cabo estas conductas. Los resultados reflejan que los hombres están más activos sexualmente y que el uso del condón y la práctica de la masturbación mutua como alternativa de sexo más seguro es muy baja. En los casos donde se usa el condón esta práctica es realizada en su mayoría por las personas que se encuentran en una relación de pareja casual. No obstante, los/las participantes tienen altos niveles de autoeficacia hacia ambas prácticas. Aunque la autoeficacia es uno de los factores que incide en decidir llevar a cabo sexo más seguro, ésta no es suficiente para que esta meta se logre.

Perez-Jimenez, David; Santiago-Rivas, Marimer; Serrano-Garcia, Irma

2012-01-01

411

[Norman Edward Shumway - pioneer of cardiac surgery (February 9, 1923 to February 10, 2006)].  

PubMed

After a fulfilled life, Norman E. Shumway, the great pioneer of cardiac transplantation, died of lung cancer 1 day after his 83rd birthday in Palo Alto, California, USA. Already at the beginning of the 1960s, he and his colleague Richard R. Lower did revolutionary experimental work on developing and establishing the technique of orthotopic cardiac transplantation in dogs. Several studies on cardiac transplantation were carried out in his department and a few years later, Shumway and his team were on their way to perform the worldwide first human-to-human cardiac transplantation. On December 3, 1967, Christiaan Neethling Barnard, a cardiac surgeon from South Africa, forestalled Shumway and performed this operation in Cape Town, South Africa. This event initiated a global boom of cardiac transplantations in the following years." Many heart centers started their own cardiac transplant programs but high mortality rates led again to stagnancy of transplant activities. Shumway remained stable in believing in good results of cardiac transplantation and continued his program steadily. At the beginning of the 1970s, he and his group were responsible for most cardiac transplantations worldwide. PMID:18773164

Schmitto, Jan D; Grossmann, Marius; Kubbe, Eric; Liakopoulos, Oliver J; Popov, Aron F; Mirzaie, Masoud; Seipelt, Ralf; Schöndube, Friedrich A

2008-09-05

412

Media exposure and dimensions of anxiety sensitivity: differential associations with PTSD symptom clusters.  

PubMed

The present investigation examined the impact of anxiety sensitivity (AS) and media exposure on posttraumatic stress disorder (PTSD) symptoms. Reactions from 143 undergraduate students in Hamilton, Ontario were assessed in the Fall of 2003 to gather information on anxiety, media coverage, and PTSD symptoms related to exposure to a remote traumatic event (September 11th). Regression analyses revealed that the Anxiety Sensitivity Index (ASI; [Peterson, R. A., & Reiss, S. (1992). Anxiety Sensitivity Index manual, 2nd ed. Worthington, Ohio: International Diagnostic Systems]) and State-Trait Anxiety Inventory trait form (STAI-T; [Spielberger, C. D., Gorsuch, R. L., & Lushene, R. E. (1970). State-trait anxiety inventory. Palo Alto, California: Consulting Psychologists Press]) total scores were significant predictors of PTSD symptoms in general. The ASI total score was also a significant predictor of hyperarousal and avoidance symptoms. Subsequent analyses further demonstrated differential relationships based on subscales and symptom clusters. Specifically, media exposure and trait anxiety predicted hyperarousal and re-experiencing symptoms, whereas the ASI fear of somatic sensations subscale significantly predicted avoidance and overall PTSD symptoms. Implications and directions for future research are discussed. PMID:18093798

Collimore, Kelsey C; McCabe, Randi E; Carleton, R Nicholas; Asmundson, Gordon J G

2007-11-13

413

Estatística de lentes gravitacionais e o gás de chaplygin generalizado  

NASA Astrophysics Data System (ADS)

A estatística de lentes gravitacionais constitui uma poderosa ferramenta utilizada na obtenção de vínculos sobre parâmetros cosmológicos, principalmente sobre modelos com uma constante cosmológica. Embora de forma às vezes controversa, antes de 1998, a análise tradicional mostrava que modelos com o parâmetro de densidade da matéria da ordem da unidade são preferidos. Esse resultado começou a ser questionado, alguns anos atrás, com as indicações, advindas da análise de supernovas com alto valor de desvio para o vermelho, de que nosso Universo está acelerando. Atualmente há enorme interesse em saber qual é a natureza da componente responsável pela aceleração cósmica. Energia escura é a denominação usual dessa componente e sua característica principal é possuir pressão negativa. Nos modelos cosmológicos tradicionais, além da energia escura, considera-se também uma outra componente de origem desconhecida. Ela é denominada matéria escura e possui pressão nula. Mais recentemente modelos unificadores em que energia escura e matéria escura são manifestações distintas de um mesmo fluido (altas densidades matéria escura, baixas densidades energia escura) foram sugeridos. Um desses modelos é conhecido como Gás de Chaplygin Generalizado que é o modelo que investigaremos. Em nosso trabalho apresentamos vínculos sobre parâmetros desse modelo usando a estatística de lentes gravitacionais. Usamos observações de quasares na faixa do visível e consideramos extinção em nosso estudo. Análises semelhantes anteriores com esse tipo de objetos e que não consideram extinção são inconsistentes. Comparação dos vínculos obtidos através de lentes gravitacionais com outros advindos de outros testes será também apresentada.

Oliveira, A. L. S.

2003-08-01

414

Calibration and Tesing of the Tunable Filter on Solar B  

NASA Astrophysics Data System (ADS)

The tunable filter in the Focal Plane Package (FPP) on the Japanese Solar B satellite, scheduled for launch in August 2006, was designed, built, and tested at the Lockheed Martin Advanced Technology Center (LMATC). It is an eight element wide field calcite filter (an improved Lyot type) with a spectral resolution of about 100mÅ and a tuning range of 11.87Å at 6302Å. Using 6 prefilters, it operates in bands covering the 5172Å Fe I, 5250Å Fe I, 5576Å Fe I, 5896Å Na I, 6302Å Fe I, and 6563Å H I lines. Here we describe the testing and calibrations used to determine the tuning parameters as functions of temperature and wavelength for the six bands. We also measure performance using sunlight and laser sources in a standalone mode and integrated into the FPP package. Images and derived magnetograms and Dopplergrams using a low resolution solar image have also been obtained while attached to the Solar B telescope and using a heliostat at the LMATC in Palo Alto. In the course of this work we have also refined the mathematical description for these types of filters, especially the error terms that arise from residual misalignments. In particular, we now believe we understand the intensity oscillations seen in this and earlier Lyot tunable filters.

Shine, R. A.; Title, A. M.; Tarbell, T. D.; Mitchell, K.; Tavarez, L.; Rosenberg, W.

2005-05-01

415

Rotational IMRT delivery using a digital linear accelerator in very high dose rate 'burst mode'.  

PubMed

Recently, there has been a resurgence of interest in arc-based IMRT, through the use of 'conventional' multileaf collimator (MLC) systems that can treat large tumor volumes in a single, or very few pass(es) of the gantry. Here we present a novel 'burst mode' modulated arc delivery approach, wherein 2000 monitor units per minute (MU min(-1)) high dose rate bursts of dose are facilitated by a flattening-filter-free treatment beam on a Siemens Artiste (Oncology Care Systems, Siemens Medical Solutions, Concord, CA, USA) digital linear accelerator in a non-clinical configuration. Burst mode delivery differs from continuous mode delivery, used by Elekta's VMAT (Elekta Ltd, Crawley, UK) and Varian's RapidArc (Varian Medical Systems, Palo Alto, CA, USA) implementations, in that dose is not delivered while MLC leaves are moving. Instead, dose is delivered in bursts over very short arc angles and only after an MLC segment shape has been completely formed and verified by the controller. The new system was confirmed to be capable of delivering a wide array of clinically relevant treatment plans, without machine fault or other delivery anomalies. Dosimetric accuracy of the modulated arc platform, as well as the Prowess (Prowess Inc., Concord, CA, USA) prototype treatment planning version utilized here, was quantified and confirmed, and delivery times were measured as significantly brief, even with large hypofractionated doses. The burst mode modulated arc approach evaluated here appears to represent a capable, accurate and efficient delivery approach. PMID:21364260

Salter, Bill J; Sarkar, Vikren; Wang, Brian; Shukla, Himanshu; Szegedi, Martin; Rassiah-Szegedi, Prema

2011-03-02

416

ULF Pulsations, Air Conductivity Changes, and Infrared (IR) Radiation Signatures Observed Prior to the 2008 Alum Rock (California) M5.4 Earthquake  

NASA Astrophysics Data System (ADS)

A collaboration between QuakeFinder (Palo Alto) and NASA JPL utilized both ground and space instruments to observe a series of electromagnetic (EM) signals detected up to 2 weeks prior to the Oct 30, 2007 Alum Rock, California, M5.4 earthquake. These signals included Ultra Low Frequency (ULF: 0.01 to 12 Hz) pulsations that were detected with a 3 axis induction magnetometer located 2 km from the epicenter. The 1- 12 sec wide pulsations were 10-50 times more intense than 2 year normal background noise levels, and the pulsations occurred 10-30 times more frequently in the 2 weeks prior to the quake than the average pulse count for the 1.8 years prior. The air conductivity sensor at the same site saturated for much of the evening prior to the quake. The conductivity levels were compared to the previous year's average conductivity patterns at the site, and determined not to be caused by moisture contamination. The GOES-West weather satellite typically observes the west coast of California, and during October of 2007, detected an area almost 100km around the quake that changed the usual night time cooling rate (a 4 year average negative temperature slope) to a positive slope during the night time for much of the 2 weeks prior to the quake. These EM signals were then compared against predictions based on several earthquake theories postulated during recent years.

Bleier, T. E.; Dunson, C.; Maniscalco, M.; Bryant, N.; Bambery, R.

2008-12-01

417

A randomized evaluation of a computer-based physician's workstation: design considerations and baseline results.  

PubMed Central

We are performing a randomized, controlled trial of a Physician's Workstation (PWS), an ambulatory care information system, developed for use in the General Medical Clinic (GMC) of the Palo Alto VA. Goals for the project include selecting appropriate outcome variables and developing a statistically powerful experimental design with a limited number of subjects. As PWS provides real-time drug-ordering advice, we retrospectively examined drug costs and drug-drug interactions in order to select outcome variables sensitive to our short-term intervention as well as to estimate the statistical efficiency of alternative design possibilities. Drug cost data revealed the mean daily cost per physician per patient was 99.3 cents +/- 13.4 cents, with a range from 0.77 cent to 1.37 cents. The rate of major interactions per prescription for each physician was 2.9% +/- 1%, with a range from 1.5% to 4.8%. Based on these baseline analyses, we selected a two-period parallel design for the evaluation, which maximized statistical power while minimizing sources of bias.

Rotman, B. L.; Sullivan, A. N.; McDonald, T.; DeSmedt, P.; Goodnature, D.; Higgins, M.; Suermondt, H. J.; Young, C. Y.; Owens, D. K.

1995-01-01

418

Surface alterations of erythrocytes in Plasmodium falciparum malaria. Antigenic variation, antigenic diversity, and the role of the spleen  

PubMed Central

The surface of erythrocytes infected with late developmental stages of Plasmodium falciparum is profoundly altered and new antigenic determinants can be detected by surface immunofluorescence using immune squirrel monkey serum. The expression of these parasite-specific antigenic determinants on the surface of the host erythrocyte can be modulated by the presence or absence of the spleen and by immune pressure. An antigenic switch occurred when a cloned population of the Ugandan Palo Alto strain of P. falciparum was transferred from a splenectomized into an intact monkey and this switch was reversible. In another strain (Indochina-1), we showed that the parasites isolated during secondary and recrudescent peaks expressed erythrocyte- associated surface antigens different from the parasites isolated during the primary infection; six variant antigenic types distinct from the original population were isolated in this way. The passive transfer of immune serum can induce antigenic variation and this can occur in a cloned parasite. The various mechanisms of antigenic variation in P. falciparum are discussed in the context of strain-specific diversity and the role of antigenic diversity in acquired immunity.

1983-01-01

419

Generation of a Solar Cycle of Sunspot Metadata Using the AIA Event Detection Framework - A Test of the System  

NASA Astrophysics Data System (ADS)

The soon-to-be-launched Solar Dynamics Observatory (SDO) will generate roughly 2 TB of image data per day, far more than previous solar missions. Because of the difficulty of widely distributing this enormous volume of data and in order to maximize discovery and scientific return, a sophisticated automated metadata extraction system is being developed at Stanford University and Lockheed Martin Solar and Astrophysics Laboratory in Palo Alto, CA. A key component in this system is the Event Detection System, which will supervise the execution of a set of feature and event extraction algorithms running in parallel, in real time, on all images recorded by the four telescopes of the key imaging instrument, the Atmospheric Imaging Assembly (AIA). The system will run on a beowulf cluster of 160 processors. As a test of the new system, we will run feature extraction software developed under the European Grid of Solar Observatories (EGSO) program to extract sunspot metadata from the 12 year SOHO MDI mission archive of full disk continuum and magnetogram images and also from the TRACE high resolution image archive. Although the main goal will be to test the performance of the production line framework, the resulting database will have applications for both research and space weather prediction. We examine some of these applications and compare the databases generated with others currently available.

Slater, G. L.; Zharkov, S.

2008-12-01

420

Magnetic Advection due to Diffusivity Gradients  

NASA Astrophysics Data System (ADS)

We have derived the advection of magnetic fields in plasmas, due to gradients in diffusivity, for a completely general case. Magnetic diffusivity is proportional to electrical resistivity. Where the value of this parameter is high, it is well known that magnetic fields can leak (or diffuse) rapidly into (or out) of the plasma. Where gradients are high, i.e. the diffusivity changes rapidly in space, magnetic fields can experience enhanced advection. We derive this phenomenon rigorously, and discuss its implications, e.g. for the solar dynamo. We also find that this magnetic advection can be expressed in terms of a diffusion equation within the induction equation, making its computational implementation especially simple. We present results of simulations of the effect generated with a magnetohydrodynamic model. We are grateful to Tom Bogdan for discussions about the mathematical derivation, and to Neal Hurlburt for the use of his MHD code. This work was supported in part by Evergreen's Sponsored Research Program, and by NSF grant 0807651. We are grateful to HAO/NCAR in Boulder, CO and Lockheed Martin Solar and Astrophysics Lab in Palo Alto, CA for their support during the performance of this work.

Zita, E. J.

2011-01-01

421

Monitoring of comet 103P/Hartley 2: evolution of the dust and gas activity  

NASA Astrophysics Data System (ADS)

The comet 103P/Hartley 2, target of the EPOXI mission (NASA) was monitored from July to December 2010. The goal of the campaign was to characterize the comet activity evolution from 1.7 AU to perihelion at 1.06 AU, as well as to follow the evolution of the dust coma morphology during this passage. Longslit spectra and optical broadband images were acquired with the instrument CAFOS mounted at the 2.2. m telescope at Calar Alto Observatory (CSIC-MPG). The evolution of the dust coma morphology from the R Johnson images shows no clear features aside the dust tail. The Af? parameter, as a proxy of the dust production rate, measured in a circular aperture of 5000 km radius at the comet distance varies from 13 cm at 1.7 AU to ? 150 cm at the perihelion. The dust radial or azimuthally averaged profiles versus projected cometocentric distance ? can be linearly fit in log-log representation. The slope m of these fits ranges from -0.95 to 1.3.

Lara, L. M.; Lin, Z. Y.

2011-10-01

422

Asymptomatic Chlamydia infection in pregnant women.  

PubMed

Chlamydia trachomatis infection is currently among the most prevalent sexually transmitted diseases in the United States. A review of three textbooks of obstetrics reveals that none of them recommend routine chlamydia screening in prenatal patients, although two recommend routine screening for gonorrhea. A study was done at the Barberton Citizens Hospital Family Practice Residency Program to determine the incidence of asymptomatic chlamydia infection in pregnant women and to compare this to the incidence of asymptomatic Neisseria gonorrhoeae infection in the same population. A total of 69 patients were screened for Neisseria gonorrhoeae and Chlamydia trachomatis as part of their routine prenatal evaluations at the first prenatal visit and the visit of 36 weeks gestation. Neisseria gonorrhoeae was detected by growth on standard Martin-Lewis culture plates. Chlamydia trachomatis was detected by positive immunofluorescence using a standardized specimen kit (Syva Company, Palo Alto, California). The data were collected over a 12-month period from July of 1987 through July of 1988. There were no positive cultures for Neisseria gonorrhoeae (0%) in this group of patients. On the other hand, five patients tested positive for Chlamydia trachomatis (7.2%). The results of this study indicate that routine screening for Chlamydia trachomatis should be considered as part of the routine prenatal care. A larger, multi-centered study could be done in the future to confirm these results, as well as to determine if any regional differences exist. PMID:2601940

Hagley, M T; Costa, A J

1989-11-01

423

Wave Dynamics of Dayglow Emissions over Low-Latitudes  

NASA Astrophysics Data System (ADS)

Measurement of neutral oxygen emissions that emanate from the thermosphere is a powerful means of investigating the dynamics of the ionosphere thermosphere (IT) system. We will present the results of the OI 630.0nm dayglow emission variability obtained from Carmen Alto, (23.16o S, 70.66o W; 10.6o S magnetic latitude), Chile, which is a low-geomagnetic latitude location. We compare the variability in the equatorial electrojet with that of dayglow to assess the contribution of the plasma dynamics to the neutral dayglow emissions. The results show that the variation in the neutral dayglow emissions displays dynamical signatures of both the neutrals and the plasmas in the IT system. Our results show that the equatorial electro-dynamical processes seem to have a direct influence on locations until around 8 degree magnetic latitude. Further, due to a long dataset (of more than 40 days) of almost continuous dayglow emissions in 2001, we were able to assess the influence of solar and lower atmosphere into the IT system. Our analysis reveals that the long term variability is predominantly influenced by the variation in the solar flux. The details of these results that reveal an intricate coupling between the variations in the solar flux and the coupling between the atmospheric regions will be discussed.

Pallamraju, Duggirala; Das, Uma; Chakrabarti, Supriya

424

Extracellular domain of YWK-II, a human sperm transmembrane protein, interacts with rat Müllerian-inhibiting substance.  

PubMed

The YWK-II protein in human spermatozoa is structurally related to the betaA4-amyloid precursor protein of Alzheimer disease and has high similarity with amyloid precusor homologues. Antibodies to the YWK-II protein agglutinate human spermatozoa and may be a potential cause of infertility. In the present study, a yeast two-hybrid system (MATCHMAKER Two-Hybrid System 2; Clontech, Palo Alto, CA) was used to screen a rat ovary cDNA library for potential ligands capable of interacting with the YWK-II component. Müllerian-inhibiting substance was found to interact with the extracellular domain of YWK-II protein. The interaction was confirmed by a binding experiment in vitro and surface plasmon resonance assays. The recombinant Müllerian-inhibiting substance can significantly increase the viability and longevity of human spermatozoa after 5 and 22 h of incubation, presumably through binding the YWK-II component on the sperm membrane. The results of this study indicate that the YWK-II sperm membrane protein may function as a receptor for Müllerian-inhibiting substance. PMID:11373173

Tian, X Y; Sha, Y S; Zhang, S M; Chen, Y B; Miao, S Y; Wang, L F; Koide, S S

2001-06-01

425

THE ASTRALUX LARGE M-DWARF MULTIPLICITY SURVEY  

SciTech Connect

We present the results of an extensive high-resolution imaging survey of M-dwarf multiplicity using the Lucky Imaging technique. The survey made use of the AstraLux Norte camera at the Calar Alto 2.2 m telescope and the AstraLux Sur camera at the ESO New Technology Telescope in order to cover nearly the full sky. In total, 761 stars were observed (701 M-type and 60 late K-type), among which 182 new and 37 previously known companions were detected in 205 systems. Most of the targets have been observed during two or more epochs, and could be confirmed as physical companions through common proper motion, often with orbital motion being confirmed in addition. After accounting for various bias effects, we find a total M-dwarf multiplicity fraction of 27% {+-} 3% within the AstraLux detection range of 0.''08-6'' (semimajor axes of {approx}3-227 AU at a median distance of 30 pc). We examine various statistical multiplicity properties within the sample, such as the trend of multiplicity fraction with stellar mass and the semimajor axis distribution. The results indicate that M-dwarfs are largely consistent with constituting an intermediate step in a continuous distribution from higher-mass stars down to brown dwarfs. Along with other observational results in the literature, this provides further indications that stars and brown dwarfs may share a common formation mechanism, rather than being distinct populations.

Janson, Markus [Department of Astrophysics, Princeton University, Princeton (United States); Hormuth, Felix; Bergfors, Carolina; Brandner, Wolfgang; Hippler, Stefan; Kudryavtseva, Natalia; Schnupp, Carolin; Henning, Thomas [Max Planck Institute for Astronomy, Heidelberg (Germany); Daemgen, Sebastian [European Southern Observatories, Garching (Germany); Schmalzl, Eva, E-mail: janson@astro.princeton.edu [Leiden Observatory, Leiden University, Leiden (Netherlands)

2012-07-20

426

An integrated Monte Carlo dosimetric verification system for radiotherapy treatment planning.  

PubMed

An integrated Monte Carlo (MC) dose calculation system, MCRTV (Monte Carlo for radiotherapy treatment plan verification), has been developed for clinical treatment plan verification, especially for routine quality assurance (QA) of intensity-modulated radiotherapy (IMRT) plans. The MCRTV system consists of the EGS4/PRESTA MC codes originally written for particle transport through the accelerator, the multileaf collimator (MLC), and the patient/phantom, which run on a 28-CPU Linux cluster, and the associated software developed for the clinical implementation. MCRTV has an interface with a commercial treatment planning system (TPS) (Eclipse, Varian Medical Systems, Palo Alto, CA, USA) and reads the information needed for MC computation transferred in DICOM-RT format. The key features of MCRTV have been presented in detail in this paper. The phase-space data of our 15 MV photon beam from a Varian Clinac 2300C/D have been developed and several benchmarks have been performed under homogeneous and several inhomogeneous conditions (including water, aluminium, lung and bone media). The MC results agreed with the ionization chamber measurements to within 1% and 2% for homogeneous and inhomogeneous conditions, respectively. The MC calculation for a clinical prostate IMRT treatment plan validated the implementation of the beams and the patient/phantom configuration in MCRTV. PMID:17374923

Yamamoto, T; Mizowaki, T; Miyabe, Y; Takegawa, H; Narita, Y; Yano, S; Nagata, Y; Teshima, T; Hiraoka, M

2007-03-20

427

Geologic Map of the Abiquiu Quadrangle, Rio Arriba County, New Mexico  

USGS Publications Warehouse

The Abiquiu 1:24,000-scale quadrangle is located along the Colorado Plateau-Rio Grande rift margin in north-central New Mexico. The map area lies within the Abiquiu embayment, an early (pre-Miocene) extensional basin of the Rio Grande rift. Rocks exposed include continental Paleozoic and Mesozoic rocks of the Colorado Plateau and Cenozoic basin-fill deposits and volcanic rocks of the Rio Grande rift. Paleozoic units include the Late Pennsylvanian to Early Permian Cutler Group, undivided. Mesozoic units are Upper Triassic Chinle Group, undivided, middle Jurassic Entrada Sandstone, and Todilto Limestone Member of the Wanakah Formation. Mesozoic rocks are folded in some areas and overlain disconformably by Cenozoic rocks. Cenozoic sedimentary rocks are composed of the Eocene El Rito Formation, Oligocene Ritito Conglomerate, Oligocene-Miocene Abiquiu Formation, and Miocene Chama-El Rito and Ojo Caliente Sandstone Members of the Tesuque Formation of the Santa Fe Group. Volcanic rocks include the Lobato Basalt, the El Alto Basalt, and dacite of the Tschicoma Formation. Quaternary deposits consist of inset ancestral axial and tributary Rio Chama deposits and Holocene floodplain alluvium, fan and pediment alluvium, and landslide colluvium.

Maldonado, Florian

2008-01-01

428

Orbits and masses in the multiple system LHS 1070  

NASA Astrophysics Data System (ADS)

Aims: We present a study of the orbits of the triple system LHS 1070, with the aim to determine individual masses of its components. Methods: Sixteen new relative astrometric positions of the three components in the K band were obtained with NACO at the VLT, Omega CASS at the 3.5 m telescope on Calar Alto, and other high-spatial-resolution instruments. We combined them with data from the literature and fit orbit models to the dataset. We derived an improved fit for the orbit of LHS 1070 B and C around each other, and an estimate for the orbit of B and C around A. Results: The orbits are nearly coplanar, with a misalignment angle of less than 10°. The masses of the three components are MA = 0.13...0.16 M?, MB = 0.077 ± 0.005 M?, and MC = 0.071 ± 0.004 M?. Therefore, LHS 1070 C is certainly, and LHS 1070 B probably a brown dwarf. Comparison with theoretical isochrones shows that LHS 1070 A is either fainter or more massive than expected. One possible explanation would be that it is a binary. However, the close companion reported previously could not be confirmed. Based on observations collected at the European Southern Observatory, Chile, proposals number 60.A-9026, 66.C-0219, 67.C-0354, 68.C-0539, 70.C-0476, 072.C-0022, 074.C-0637, 078.C-0386, 380.C-0179, 382.C-0324, and 382.C-0329.

Köhler, R.; Ratzka, T.; Leinert, Ch.

2012-05-01

429

High resolution imaging and polarimetry with SUNRISE, a balloon-borne stratospheric solar observatory  

NASA Astrophysics Data System (ADS)

SUNRISE is an international collaboration for the development and operation of a meter-class balloon-borne stratospheric solar observatory. Prime science goal is the study of structure and dynamics of the magnetic field in the solar atmosphere and the interaction of the magnetic field with convective plasma flows. These processes are studied by high resolution imaging in the UV and polarimetry at visible wavelengths. The instrument has been successfully launched on June 8, 2009 from ESRANGE, Kiruna, Northern Sweden. During the more than 5 days flight about 1.5 TByte of scientific data were collected. The paper gives an overview of the instrument and mission, examples of the scientific output will also be presented. SUNRISE is a joint project of the Max-Planck-Institut fuer Sonnensystemforschung (MPS), Katlenburg-Lindau, with the Kiepenheuer-Institut fuer Sonnenphysik (KIS), Freiburg, the High-Altitude Observatory (HAO), Boulder, the Lockheed-Martin Solar and Astrophysics Lab. (LMSAL), Palo Alto, and the Spanish IMaX consortium.

Barthol, Peter; Chares, Bernd; Deutsch, Werner; Feller, Alex; Gandorfer, Achim; Grauf, Bianca; Hirzberger, Johann; Meller, Reinhard; Riethmueller, Tino; Schuessler, Manfred; Solanki, Sami K.; Knoelker, Michael; Martinez Pillet, Valentin; Schmidt, Wolfgang; Title, Alan

430

Did most high-redshift quasars escape detection?  

NASA Astrophysics Data System (ADS)

We present follow-up spectroscopy to the Calar Alto Deep Imaging Survey (CADIS), reporting on the quasars in the CADIS 16 h-field, and including preliminary data from two other fields. In this 10arcmin x 10arcmin field we found six quasars at redshift z>2.2 which are brighter than R=22(m) , while surface densities determined in previous surveys are reported to be below one on average. This is the highest reported surface density of high-redshift quasars within the given limits. We believe this result to be a consequence of the multicolor database and the search technique used in CADIS. Our observations further seem to indicate that the density of high-redshift quasars is also higher than predicted by the luminosity function of Warren et al. (1994) by a factor of three, implying that common search methods have overlooked the majority of high-redshift quasars at this magnitude level. In particular, an application of the V/Vmax test to our preliminary list of AGNs with R<22(m) and z<4 yields < V/Vmax > = 0.51+/-0.06, characterizing our preliminary redshift distribution as flat.

Wolf, C.; Meisenheimer, K.; Röser, H.-J.; Beckwith, S. V. W.; Fockenbrock, R.; Hippelein, H.; von Kuhlmann, B.; Phleps, S.; Thommes, E.

1999-03-01

431

Contactless Thermal Diffusivity Measurements for Pulsed Magnetic Fields  

NASA Astrophysics Data System (ADS)

Most calorimetric techniques require long time constants. and are limited to DC magnets. We are developing calorimetric measurements on short time scales for pulsed field experiments. Specific heat (C) measurements have been performed in high fields (60 T) by Jaime et al. (Nature, 405 (2000) 160); however, these measurements have been limited to a unique long-pulse magnet. Recently, Kim et al.(to be submitted) have successfully measured thermal conductivity (?) in a short pulse magnet; however, the 3-? technique utilized by Kim et al. requires a time consuming deposition processes. In an effort to bring simple-to-use high field calorimetric measurements to the larger condensed-matter community, we are adapting existing contact-less conductivity techniques to measure the thermal diffusivity (C?) in pulsed magnetic fields. An amplitude modulated rf heater excites surface currents in a sample, which in turn drives small oscillatory variations in the surface temperature and are detected via changes in the sample's skin depth. The amplitude of the surface temperature variations depend upon the thermal diffusivity and the frequency at which the rf heater is modulated. By varying the modulation frequency of the rf heater, the thermal diffusivity can be deduced. As a first step toward performing these measurements in pulsed fields, initial measurements in a dc magnet will be presented.

Coffey, T.

2005-03-01

432

[Pomeranian community and the use of pesticides: an unknown reality].  

PubMed

The objective of this article is to characterize social and economically the Pomeranian community from 'Alto Santa Maria' in the municipality of Santa Maria de Jetibá at Espírito Santo State and investigate the main factors of pesticides exposure in rural community. A cross-sectional study was carried out interviewing 151 members of a rural Pomeranian community using a semi-structured questionnaire. The analysis was based in descriptive statistics and logistics regression models. The results revealed that the majority of the community members own their land. The child participation in agricultural activities is a tradition in the Pomeranian culture. The use of pesticides by this community began in the 80s since then; different types of pesticides have frequently been used by rural residents. The logistic regression models that associate the presence of some health problem with how the land is cleaned, pesticides usage, pesticides application frequency and the use of protection equipment, showed that the chance of an individual to present some health problem is related with the use of pesticides. Another regression model showed that the education level is an important factor to the use of protection equipment. The Pomeranian community studied has some cultural habits that contribute for the exposure of pesticides. PMID:20069194

Jacobson, Ludmilla da Silva Viana; Hacon, Sandra de Souza; Alvarenga, Luciana; Goldstein, Roberta Argento; Gums, Carmen; Buss, Daniel Forsin; Leda, Luciana Ribeiro

433

First results of a spectrophotometric study of emission-line galaxies (ELGs) towards nearby voids  

NASA Astrophysics Data System (ADS)

In the last four years a survey for emission-line objects was conducted by Popescu et al. (1996, A&AS 116, 43), (1998, A&AS Oct II), based on the HS (Hamburg Quasar Survey) objective prism plates. The main goal of the project was to search for emission-line galaxies (ELGs) in voids and to analyse the large-scale structure of this kind of galaxies (Popescu et al. 1997, A&A 328, 756). The follow-up spectroscopy at the 2.2 m telescope at Calar Alto provided us with a complete sample of 250 ELGs, of which many are Blue Compact Dwarfs (BCDs). These objects have focused attention after the discovery by Sargent and Searle (1970) that some of them were low metallicity systems and are known to host a very active stellar formation. Here we present the spectrophotometric properties of a subsample of 90 ELGs for which accurate flux calibration was obtained. All the objects presented here were observed in one observing campaign using a 4^{''} slit width. We derive fluxes, line rations and metallicities and we classify the galaxies according to their main spectroscopic characteristics. For some galaxies we extract the contribution of individual HII regions. Most of the ELGs have high excitation spectra of typical HII galaxies. We also found a subsample of very-low metallicity HII galaxies, with oxygen abundance 12 + log O/H between 7.7 and 8.00.

Popescu, C. C.; Hopp, U.; Rosa, M.

434

CARMENES. III: an innovative and challenging cooling system for an ultra-stable NIR spectrograph  

NASA Astrophysics Data System (ADS)

The CARMENES project, which is currently at FDR stage, is a last-generation exoplanet hunter instrument to be installed in the Calar Alto Observatory by 2014. It is split into two different spectrographs: one works within the visual range while the other does it in the NIR range. Both channels need to be extremely stable in terms of mechanical and thermal behavior. Nevertheless, due to the operation temperature of the NIR spectrograph, the thermal stability requirement (+/-0.07 K in 24 hours; +/-0.01 K (goal)) becomes actually a major challenge. The solution here proposed consists of a system that actively cools a shield enveloping the optical bench. Thus, the instability produced on the shield temperature is further damped on the optical bench due to the high mass of the latter, as well as the high thermal decoupling between both components, the main heat exchange being produced by radiation. This system -which is being developed with the active collaboration and advice of ESO (Jean-Louis Lizon)- is composed by a previous unit which produces a stable flow of nitrogen gas. The flow so produced goes into the in-vacuum circuitry of the NIR spectrograph and removes the radiative heat load incoming to the radiation shield by means of a group of properly dimensioned heat exchangers. The present paper describes and summarizes the cooling system designed for CARMENES NIR as well as the analyses implemented.

Becerril, S.; Lizon, J. L.; Sánchez-Carrasco, Miguel Andrés.; Mirabet, E.; Amado, P.; Seifert, W.; Quirrenbach, A.; Mandel, H.; Caballero, J. A.; Ribas, I.; Reiners, A.; Abril, M.; Antona, R.; Cárdenas, C.; Morales, R.; Pérez, D.; Rámon, A.; Rodríguez, E.; Herranz, J.

2012-09-01

435

Disk-bulge decompositions of spiral galaxies in UBVRI  

NASA Astrophysics Data System (ADS)

A sample of 26 bright spiral galaxies (Btot < 12.7) with low to medium inclination and without a bar was observed with UBVRI filters. The CAFOS focal reducer camera at the Calar Alto 2.2 m telescope was used. The surface-brightness distributions were fitted using a 2-dimensional algorithm with corresponding functions for the disk- and bulge-structure. For the disks an exponential function was used, for the bulges a Sérsic R? law, was applied with the concentration parameter ? = 1/n as another fit variable. Correlations of the resulting structural parameters of disks and bulges in UBVRI are investigated, giving clues to the formation history of the bulges. We confirm that the large and bright bulges of early-type spirals are similar to elliptical galaxies. They were probably formed prior to the disks in a monolithic collapse or via early mergers. Late-type spirals have tiny and faint bulges with disk-like profiles. These bulges were probably formed after the disk in secular evolution processes, e.g. from a disk instability. The comparison of the color indices of corresponding spirals and bulges with population synthesis computations support above formation scenarios. Tables 2-4 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/415/63

Möllenhoff, C.

2004-02-01

436

Polarization and Variability of Brown Dwarfs  

NASA Astrophysics Data System (ADS)

L-type brown dwarfs (Teff = 1400-2100K) are known for their dusty photospheres. Brown dwarfs may have asymmetric surfaces arising from rotationally-induced flattening or large-scale cloud cover and patchiness. This broken symmetry may prevent polarization by dust-scattering to to cancel out, resulting in a non-zero polarization. Therefore, studying polarization provides useful insights into surface heterogeneities in brown dwarfs. Zapatero Osorio et al.(2005),Ménard et al. (2002), and Goldman et al. (2009) report that some brown dwarfs have small polarization degrees on the order of 0.1%. Their results also suggest variability. This project aims to confirm past results through investigating previous targets as well as expanding the sample size. We also aim to search for variability in the ultra-cool dwarfs in our survey. We used the CAFOS camera on the 2.2 meter telescope at the Calar Alto Observatory in Spain. In this poster, we present the data and analysis from 15 nights of observation of 22 brown dwarfs.

Knight, Cynthia; Goldman, B.; Stephens, D.; Pitann, J.; Zapatero Osorio, M.; Bejar, V.; Henning, T.

2010-01-01

437

Monitoring of the comet 73P/Schwassmann-Wachmann 3 from January 3 to May 20, 2006  

NASA Astrophysics Data System (ADS)

Comet 73P/Schwassmann-Wachmann 3 has been monitored since January 3 to May 20, 2006. The goal of this campaign has been to characterize the different comet fragments (C, B and E as initially planned). However, our efforts focused on the study of the C and B fragments, the latter showing a highly variable activity and several splitting events. Thus, it has been possible to study the evolution in time of several fragments possibly giving hints about the material ejected from the nucleus during these disruption events. Optical broadband images (and long-slit spectroscopic measurements) were acquired with the instrument CAFOS mounted at the 2.2 m telescope at the Calar Alto Observatory (CSIC-MPG) in Almería (Spain). For the brightest fragments, we present our results on the evolution of the dust production rate (by means of the customary Af% parameter), dust reddening, coma morphology, gas production rates (CN, C2, C3, NH2), radial profiles of the dust brightness, etc. Differences and similarities among the evolution and behavior of the different fragments will be outlined.

Bertini, I.; Boehnhardt, H.; Gutiérrez, P. J.; Kueppers, M.; Lara, L. M.; Rodrigo, R.

2007-08-01

438

Optical Spectroscopy of two Double-degenerate Polar Candidates  

NASA Astrophysics Data System (ADS)

RX J0806.3+1527 and RX J1914.4+2456 are two peculiar magnetic CVs which have been discovered during optical identification programmes of soft X-ray sources from the ROSAT All-Sky Survey (Beuermann et al. 1999, Motch et al. 1996). Both systems have similar X-ray spectra and show a strong pulsation of the soft X-ra y flux with a modulation of ~ 100 % and periods of 5.4 min and 9.5 min, respectively. While these systems have originally been suggested to be further members of the ROSAT-discovered class of soft X-ray intermediate polars, arguments have been put forward that they could be double-degenerate polars (Ramsay et al. 2000, Burwitz & Reinsch 2000). We present the first optical spectra of the V ~ 21 mag and V ~ 19 mag objects obtained with FORS1 at the ESO VLT UT1/Antu and with CAFOS at the Calar Alto 2.2 m telescope, respectively, and re-discuss the nature of these objects. References: Beuermann K., Thomas H.-C., Reinsch K., et al., 1999, A&A 347, 47 Burwitz V., Reinsch K., 2000, Astrophys. Letters and Communication, in press Motch C., Haberl F., Pakull M., Reinsch K., Krautter J., 1996, A&A 307, 459 Ramsay G., Cropper M., Wu K., Mason K.O., Hakala P., 2000, MNRAS 311, 75

Reinsch, K.; Beuermann, K.; Kube, J.; Kuduz, M.; Burwitz, V.

439

Adaptive detection of missed text areas in OCR outputs: application to the automatic assessment of OCR quality in mass digitization projects  

NASA Astrophysics Data System (ADS)

The French National Library (BnF*) has launched many mass digitization projects in order to give access to its collection. The indexation of digital documents on Gallica (digital library of the BnF) is done through their textual content obtained thanks to service providers that use Optical Character Recognition softwares (OCR). OCR softwares have become increasingly complex systems composed of several subsystems dedicated to the analysis and the recognition of the elements in a page. However, the reliability of these systems is always an issue at stake. Indeed, in some cases, we can find errors in OCR outputs that occur because of an accumulation of several errors at different levels in the OCR process. One of the frequent errors in OCR outputs is the missed text components. The presence of such errors may lead to severe defects in digital libraries. In this paper, we investigate the detection of missed text components to control the OCR results from the collections of the French National Library. Our verification approach uses local information inside the pages based on Radon transform descriptors and Local Binary Patterns descriptors (LBP) coupled with OCR results to control their consistency. The experimental results show that our method detects 84.15% of the missed textual components, by comparing the OCR ALTO files outputs (produced by the service providers) to the images of the document.

Ben Salah, Ahmed; Ragot, Nicolas; Paquet, Thierry

2013-01-01

440

Expanding beyond "mother-child" services.  

PubMed

Several reproductive health programs in Bolivia have attempted to reduce institutionalized gender inequalities through efforts ranging from consciousness-raising courses to national legislation against domestic violence. It has been found that a maternal-child health-oriented approach to reproductive health eliminates many of those who require services, including childless women, women who have completed childbearing, and men. Moreover, the traditional exclusion of men from family planning decision-making often exacerbates women's vulnerability to abuse. La Casa de la Mujer in Santa Cruz, Bolivia, conducts family planning workshops for couples, works with young men and women, and seeks to involve male partners of its clients in center activities. Gender awareness not only helps couples to improve their relationships, but also improves the quality of interactions between family planning clients and providers. The widespread tendency of clinic doctors and staff to dismiss women's questions and concerns about contraceptive methods undermines providers' ability to counter misinformation and urge user compliance. The Center for Research and Development of Women in El Alto, Bolivia, has developed an approach to communication in which providers and clients discuss options in a collaborative manner. This approach has led to improved provider-client cooperation, more accurate diagnoses, and improved client health. PMID:12294404

Paulson, S

1998-01-01

441

Accuracy of out-of-field dose calculations by a commercial treatment planning system  

PubMed Central

The dosimetric accuracy of treatment planning systems (TPSs) decreases for locations outside the treatment field borders. However, the true accuracy of specific TPSs for locations beyond the treatment field borders is not well documented. Our objective was to quantify the accuracy of out-of-field dose predicted by the commercially available Eclipse version 8.6 TPS (Varian Medical Systems, Palo Alto, CA) for a clinical treatment delivered on a Varian Clinac 2100. We calculated (in the TPS) and determined (with thermoluminescent dosimeters) doses at a total of 238 points of measurement (with distance from the field edge ranging from 3.75 to 11.25 cm). Our comparisons determined that the Eclipse TPS underestimated out-of-field doses by an average of 40% over the range of distances examined. As the distance from the treatment field increased, the TPS underestimated the dose with increasing magnitude—up to 55% at 11.25 cm from the treatment field border. These data confirm that accuracy beyond the treatment border is inadequate, and out-of-field data from TPSs should be used only with a clear understanding of this limitation. Studies that require accurate out-of-field dose should use other dose reconstruction methods, such as direct measurements or Monte Carlo calculations.

Howell, Rebecca M; Scarboro, Sarah B; Kry, S F; Yaldo, Derek Z

2011-01-01

442

Development of a partnership with government and industry to accelerate the commercialization of hydrogen. Final report, November 1, 1996--October 31, 1997  

SciTech Connect

The National Hydrogen Association (NHA) was born out of a Hydrogen Workshop, November 16 and 17, 1988, held at the Electric Power Research Institute in Palo Alto, California. The following mission statement was adopted and remains the statement of the organization: to foster the development of hydrogen technologies and their utilization in industrial and commercial applications and to promote the transition role of hydrogen in the energy field. This final technical report provides a summary of the activities performed by the NHA. Activities are broken down by task area, and include the following: Information exchange within the NHA; Information exchange within the hydrogen industry; Information exchange with other critical industries and the public; Annual US hydrogen meeting; Codes and standards which includes establishing industry consensus on safety issues; Industry perspective and needs; and Administrative. Appendices to this report include the following: Role of the NHA in strategic planning for the hydrogen economy--An international initiative; Hydrogen safety report; and Implementation plan workshop II, whose purpose was to seek commercialization scenarios and strategies to introduce hydrogen in near-term transportation and power markets.

NONE

1998-09-01

443

The influence of interactions and minor mergers on the structure of galactic disks I. Observations and disk models  

NASA Astrophysics Data System (ADS)

This paper is the first part in our series on the influence of tidal interactions and minor mergers on the radial and vertical disk structure of spiral galaxies. We report on the sample selection, our observations, and data reduction. Surface photometry of the optical and near infrared data of a sample of 110 highly-inclined/edge-on disk galaxies are presented. This sample consists of two subsamples of 61 non-interacting galaxies (control sample) and of 49 interacting galaxies/minor merging candidates. Additionally, 41 of these galaxies were observed in the near infrared. We show that the distribution of morphological types of both subsamples is almost indistinguishable, covering the range between 0 <= T <= 9. An improved, 3-dimensional disk modelling- and fitting procedure is described in order to analyze and to compare the disk structure of our sample galaxies by using characteristic parameters. We find that the vertical brightness profiles of galactic disks respond very sensitive even to small deviations from the perfect edge-on orientation. Hence, projection effects of slightly inclined disks may cause substantial changes in the value of the disk scale height and must therefore be considered in the subsequent study. Based on observations obtained at the European Southern Observatory (ESO, La Silla, Chile), Calar Alto Observatory operated by the MPIA (DSAZ, Spain), Lowell Observatory (Flagstaff/AZ, USA), and Hoher List Observatory (Germany).

Schwarzkopf, U.; Dettmar, R.-J.

2000-05-01

444

X-Ray Astronomy Discovery Experiments*  

NASA Astrophysics Data System (ADS)

A Lockheed proposal to ``scan along the galactic equator in the direction of the galactic center '' ^1 was made to NASA in late 1960, over a year before Giacconi's discovery of Sco X-1, in 1962.^2 The nature of the Lockheed survey and first results were announced in 1964. Data in several publications verified the 1960 postulate that the brightest sources would lie within the galaxy and at low galactic latitude. A fourth publication summarized results.^3 A recent listing ^4 confirmed the discovery nature of the nearly fifty-year-old Lockheed proposal, and the effort's success. Data from the two concurrent experiments will be presented, and several published or just copyrighted appraisals of the two efforts will be described. *Work supported by NASA contracts NAS5-1174 and NASw-909, the Lockheed Independent Research Program, and several successive forms of Ruffner Associates. ^1P. C. Fisher, Lockheed Missiles and Space Division Document LMSD 702172, Palo Alto, (1960) ^2R. Giacconi et al., Phys. Rev. Lett. 9 (1962) 439 ^3P. C. Fisher et al., Astrophys. J., 151 (1968) 1. ^4P. C. Fisher, Who'sWho in the World, Marquis Who's Who LLC, New Providence, NJ, 22^nd Edition, (2005) 667-668.

Fisher, P. C.

2008-04-01

445

Evaluation of a PCR-RFLP- ITS2 assay for discrimination of Anopheles species in northern and western Colombia  

PubMed Central

Anopheles mosquitoes are routinely identified using morphological characters of the female that often lead to misidentification due to interspecies similarity and intraspecies variability. The aim of this work was to evaluate the applicability of a previously developed PCR-RFLP-ITS2 assay for accurate discrimination of anophelines in twelve localities spanning three Colombian malaria epidemiological regions: Atlantic Coast, Pacific Coast, and Uraba-Bajo Cauca-Alto Sinu Region. The evaluation of the stability of the PCR-RFLP patterns is required since variability of the ITS2 has been documented and may produce discrepancies in the patterns previously reported. The assay was used to evaluate species assignation of 939 mosquitoes identified by morphology. Strong agreement between the morphological and molecular identification was found for species An. albimanus, An. aquasalis, An. darlingi and An. triannulatus s.l. (p ? 0.05, kappa=1). However, disagreement was found for species An. nuneztovari s.l., An. neomaculipalpus, An. apicimacula and An. punctimacula (p ? 0.05; kappa ranging from 0.33–0.80). The ITS2-PCR-RFLP assay proved valuable for discriminating anopheline species of northern and western Colombia, especially those with overlapping morphology in the Oswaldoi Group.

Cienfuegos, Astrid V.; Rosero, Doris A.; Naranjo, Nelson; Luckhart, Shirley; Conn, Jan E.; Correa, Margarita M.

2011-01-01

446

Storing hydroelectricity to meet peak-hour demand  

SciTech Connect

This paper reports on pumped storage plants which have become an effective way for some utility companies that derive power from hydroelectric facilities to economically store baseload energy during off-peak hours for use during peak hourly demands. According to the Electric Power Research Institute (EPRI) in Palo Alto, Calif., 36 of these plants provide approximately 20 gigawatts, or about 3 percent of U.S. generating capacity. During peak-demand periods, utilities are often stretched beyond their capacity to provide power and must therefore purchase it from neighboring utilities. Building new baseload power plants, typically nuclear or coal-fired facilities that run 24 hours per day seven days a week, is expensive, about $1500 per kilowatt, according to Robert Schainker, program manager for energy storage at the EPRI. Schainker the that building peaking plants at $400 per kilowatt, which run a few hours a day on gas or oil fuel, is less costly than building baseload plants. Operating them, however, is more expensive because peaking plants are less efficient that baseload plants.

Valenti, M.

1992-04-01

447

Which is riskier: windmills or reactors  

SciTech Connect

In 1978, Dr. Herbert Inhaber, a scientist employed by the Atomic Energy Board of Canada, published an evaluation of the health hazards of different energy systems entitled Risk of Energy Production. He concluded that natural gas and nuclear systems are safer than coal- and oil-fired power plants, hydroelectricity, various forms of solar energy, windmills, methanol (wood alcohol), and other nonconventional energy sources. The report and its conclusions drew widespread criticism, particularly from Dr. John P. Holdren, professor of energy and resources, University of California at Berkeley. Holdren and five colleagues wrote a stinging 232-page critique of the Inhaber report. The Council for the Advancement of Science Writing, a nonprofit educational organization of writers and scientists, invited the two to debate the issue in front of an audience of science reporters. The confrontation took place at CASW's 17th Annual New Horizons in Science Briefing in Palo Alto, Calif., on Nov. 5, 1979. An edited transcript of the debate is presented here.

Cromie, W.J.

1980-03-01

448

Identification of red high proper-motion objects in Tycho-2 and 2MASS catalogues using Virtual Observatory tools  

NASA Astrophysics Data System (ADS)

Aims: With available Virtual Observatory tools, we looked for new M dwarfs in the solar neighbourhood and M giants with high tangential velocities. Methods: From an all-sky cross-match between the optical Tycho-2 and the near-infrared 2MASS catalogues, we selected objects with proper motions ? > 50 mas yr-1 and very red VT - Ks colours. For the most interesting targets, we collected multi-wavelength photometry, constructed spectral energy distributions, estimated effective temperatures and surface gravities from fits to atmospheric models, performed time-series analysis of ASAS V-band light curves, and assigned spectral types from low-resolution spectroscopy obtained with CAFOS at the 2.2 m Calar Alto telescope. Results: We got a sample of 59 bright red high proper-motion objects, including fifty red giants, four red dwarfs, and five objects reported in this work for the first time. The five new stars have magnitudes VT ? 10.8-11.3 mag, reduced proper motions midway between known dwarfs and giants, near-infrared colours typical of giants, and effective temperatures Teff ? 2900-3400 K. From our time-series analysis, we discovered a long secondary period in Ruber 4 and an extremely long primary period in Ruber 6. With the CAFOS spectra, we confirmed the red giant nature of Ruber 7 and 8, the last of which seems to be one of the brightest metal-poor M giants ever identified.

Jiménez-Esteban, F. M.; Caballero, J. A.; Dorda, R.; Miles-Páez, P. A.; Solano, E.

2012-03-01

449

Use of the Corus(R) CAD Gene Expression Test for Assessment of Obstructive Coronary Artery Disease Likelihood in Symptomatic Non-Diabetic Patients  

PubMed Central

The determination of the underlying etiology of symptoms suggestive of obstructive coronary artery disease (CAD, ?50% stenosis in a major coronary artery) is a common clinical challenge in both primary care and cardiology clinics. Usual care in low to medium risk patients often involves a family history, risk factor assessment, and then stress testing with or without non-invasive imaging. If positive, this is often followed by invasive coronary angiography (ICA). Despite extensive adoption of this usual care paradigm, more than 60% of patients referred for angiography do not have obstructive CAD. In order to robustly identify those symptomatic patients without obstructive CAD, who can avoid subsequent cardiac testing and look elsewhere for the cause of their symptoms, a recently described whole blood gene expression score (GES: Corus® CAD, CardioDx, Inc., Palo Alto, CA) has been developed and validated in two multi-center trials. This paper reviews the published literature and assessments by independent parties regarding the analytical and clinical validity as well as the clinical utility of the Corus® CAD test.

Vargas, Jose; Lima, Joao A.C.; Kraus, William E.; Douglas, Pamela S; Rosenberg, Steven

2013-01-01

450

First results from the ALHAMBRA-Survey  

NASA Astrophysics Data System (ADS)

We present the first results from the ALHAMBRA survey. ALHAMBRA will cover a relatively wide area (4 square degrees) using a purposely-designed set of 20 medium-band filters, down to an homogeneous magnitude limit AB~25 in most of them, adding also deep near-infrared imaging in JHK. To this aim we are using the Calar Alto 3.5m telescope. A small area of the ALHAMBRA survey has already been observed through our complete filter set, and this allows for the first time to check all the steps of the survey, including the pipelines that have been designed for the project, the fulfilment of the data quality expectations, the calibration procedures, and the photometric redshift machinery for which ALHAMBRA has been optimised. We present here the basic results regarding the properties of the galaxy sample selected in a 15x15 square arcmin area of the ALHAMBRA-8 field, which includes approximately 10000 galaxies with precise photometric redshift measurements. In a first estimate, approximately 500 of them must be galaxies with z>2.

Fernández-Soto, A.; Alhambra-Survey Core Team

2007-09-01

451

Bulge-to-disk decomposition of 5 ALHAMBRA galaxies in 23 photometric bands  

NASA Astrophysics Data System (ADS)

The Advanced Large Homogeneous Area Medium Band Redshift Astronomical Survey (ALHAMBRA Survey) contains images of galaxies obtained through 20 square-like shaped, equal width, medium band filters from 350 nm to 970 nm, plus J,H and K_s standard filters. The survey is based on observations with the 3.5 m telescope at Calar Alto Observatory, under seeing ? 1". This survey gives possibilities to determine the morphological parameters for galaxies with z?0.2 and to analyze the changes of these ones as a function of the wavelength. To obtain the information related to the morphological parameters of a galaxy it is necessary to extract structural components from galaxy images. This is achieved by using a two-dimensional fitting algorithm called GALFIT whose main characteristics and fitting procedure are briefly exposed in this paper. The present study is based on a simple bulge-to-disc decomposition of the galaxy image and it is focused only on the contribution of each component to the total optical luminosity. Clearly, such a choice is the first step to test the GALFIT possibilities on images of galaxies from the ALHAMBRA Survey. This is illustrated by means of 5 case studies of galaxies with 0.1 ? z ? 0.2, which include 3 spiral galaxies and 2 elliptical galaxies.

Concejo, José

452

The ALHAMBRA Survey  

NASA Astrophysics Data System (ADS)

ALHAMBRA is a survey of eight separate regions of the sky with a total area of 4 sq. deg. The fields are observed with the LAICA (visible) and OMEGA-2000 (near infrared) cameras mounted on the 3.5 m telescope of CAHA observatory. The survey is done with a set of 20 adjacent medium-band filters that cover the visible range. These filters, together with three standard near-infrared ones, allow for a detailed measurement of the spectral energy distribution and redshift of a multitude of objects, stretching over an unprecedented range of distances for such a large-area survey. In particular, the basic motivation of the whole ALHAMBRA project is the cosmic evolution of galaxies. ALHAMBRA has been designed to cover the niche between deep pencil-beam surveys, which are necessarily restricted to small areas, and large-area shallow surveys that only probe the local Universe. The project enjoys Spanish guaranteed observing time status at the Calar Alto facilities. In this poster, we present the project and the first results obtained.

Moles, M.; Aguerri, J. A. L.; Alfaro, E. J.; Benítez, N.; Broadhurst, T.; Cabrera-Caño, J.; Castander, F. J.; Cepa, J.; Cerviño, M.; Fernández Soto, A.; González Delgado, R. M.; Infante, L.; Martínez, V. J.; Masegosa, J.; Márquez, I.; Del Olmo, A.; Perea, J.; Prada, F.; Quintana, J. M.; Sánchez, S. F.

2008-06-01

453

Soft copy versus hard copy reading in digital mammography.  

PubMed

The objective of this study was to compare soft copy reading at a mammography work station with hard copy reading of full-field digital mammographic images. Mammograms of 60 patients ( n = 29 malignant, n = 31 benign) performed with full-field digital mammography (Senographe 2000D, GE, Buc, France) were evaluated. Reading was performed based on hard copy prints (Scopix, Agfa, Leverkusen, Germany) and on 2 k x 2.5 k high-resolution monitors (Sun Ultra 60, Sun Microsystems, Palo Alto, California, USA). Four readers with different levels of experience in mammography categorized the mammograms according to the BI-RADS classification. The comparative study was performed by four readers, and at least 2 months elapsed between the reading sessions. Postprocessing, of course, was available only at the work station (windowing and leveling, zooming, inversion). Sensitivity, specificity, and positive predictive value were evaluated. Diagnostic accuracy of the evaluation was determined. Sensitivity for malignant lesions in hard copy versus soft copy reading was 97% vs 90%, 97% vs 97%, 93% vs 97%, and 76% vs 76% for the four readers, respectively. Specificity was 52% vs 68%, 58% vs 74%, 65% vs 48%, and 61% vs 68%. Accuracy for the classification of malignant lesions according to the BI-RADS categories showed no difference between hard copy and soft copy reading. Soft copy reading is possible with the available system and enables radiologists to use the advantages of a digital system. PMID:14749966

Obenauer, Silvia; Hermann, Klaus-Peter; Marten, Katharina; Luftner-Nagel, Susanne; von Heyden, Dorit; Skaane, Per; Grabbe, Eckhardt

2004-01-30

454

Chemical abundance analysis of the open clusters Cr 110, NGC 2099 (M 37), NGC 2420, NGC 7789, and M 67 (NGC 2682)  

NASA Astrophysics Data System (ADS)

Context. The present number of Galactic open clusters that have high resolution abundance determinations, not only of [Fe/H], but also of other key elements, is largely insufficient to enable a clear modeling of the Galactic disk chemical evolution. Aims: To increase the number of Galactic open clusters with high quality measurements. Methods: We obtained high resolution (R ~ 30 000), high quality (S/N ~ 50-100 per pixel), echelle spectra with the fiber spectrograph FOCES, at Calar Alto, Spain, for three red clump stars in each of five Open Clusters. We used the classical equivalent width analysis method to obtain accurate abundances of sixteen elements: Al, Ba, Ca, Co, Cr, Fe, La, Mg, Na, Nd, Ni, Sc, Si, Ti, V, and Y. We also derived the oxygen abundance using spectral synthesis of the 6300 Å forbidden line. Results: Three of the clusters were never studied previously with high resolution spectroscopy: we found [Fe/H] = +0.03±0.02 (±0.10) dex for Cr 110; [Fe/H] = +0.01±0.05 (±0.10) dex for NGC 2099 (M 37), and [Fe/H] = -0.05±0.03 (±0.10) dex for NGC 2420. This last finding is higher than typical literature estimates by 0.2-0.3 dex approximately and in closer agreement with Galactic trends. For the remaining clusters, we find that [Fe/H] = +0.05±0.02 (±0.10) dex for M 67 and [Fe/H] = +0.04±0.07 (±0.10) dex for NGC 7789. Accurate (to ~0.5 km s-1) radial velocities were measured for all targets, and we provide the first velocity estimate derived from high resolution data for Cr 110, < V_r> = 41.0±3.8 km s-1. Conclusions: With our analysis of the new clusters Cr 110, NGC 2099, and NGC 2420, we increase the sample of clusters with high-resolution-based abundances by 5%. All our program stars show abundance patterns which are typical of open clusters, very close to solar with few exceptions. This is true for all the iron-peak and s-process elements considered, and no significant ?-enhancement is found. No significant (anti-)correlations for Na, Al, Mg, and O abundances are found. If anticorrelations are present, the involved spreads must be <0.2 dex. We then compile high resolution data of 57 OC from the literature and find a gradient of [Fe/H] with Galactocentric radius of -0.06±0.02 dex kpc-1, in agreement with past work and with results for Cepheids and B stars in the same range. A change of slope is seen outside RGC = 12 kpc and [?/Fe] shows a tendency to increase with RGC. We also confirm the absence of a significant age-metallicity relation, finding slopes of -2.6±1.1 × 10-11 dex Gyr-1 and 1.1±5.0 × 10-11 dex Gyr-1 for [Fe/H] and [?/Fe] respectively. Based on data collected with the fiber spectrograph FOCES at the 2.2 m Calar Alto Telescope. Also based on data from the 2MASS survey and the WEBDA, VALD, NIST, and GEISA online databases.Full Table 5 is only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/511/A56

Pancino, E.; Carrera, R.; Rossetti, E.; Gallart, C.

2010-02-01

455

Dispersion of fruit flies (Diptera: Tephritidae) at high and low densities and consequences of mismatching dispersions of wild and sterile flies  

SciTech Connect

Both wild and released (sterile) Bactrocera tryoni (Froggatt) (Diptera: Tephritidae) and wild Bactrocera papayae (Drew and Hancock) in Australia had patchy distributions and comparisons with predictions of the negative binomial model indicated that the degree of clumping was sometimes very high, particularly at low densities during eradication. An increase of mean recapture rate of sterile B. tryoni on either of 2 trap arrays was not accompanied by a reduction in its coefficient of variation and when recapture rates were high, the percentage of traps catching zero decreased only slightly with increase in recapture rate, indicating that it is not practicable to decrease the heterogeneity of dispersion of sterile flies by increasing the number released. There was often a mismatch between the dispersion patterns of the wild and sterile flies, and the implications of this for the efficiency of the sterile insect technique (SIT) were investigated with a simulation study with the observed degrees of mismatch obtained from the monitoring data and assuming the overall ratio of sterile to wild flies to be 100:1. The simulation indicated that mismatches could result in the imposed rate of increase of wild flies being up to 3.5 times higher than that intended (i.e., 0.35 instead of 0.1). The effect of a mismatch always reduces the efficiency of SIT. The reason for this asymmetry is discussed and a comparison made with host-parasitoid and other systems. A release strategy to counter this effect is suggested. (author) [Spanish] Las moscas naturales y liberadas (esteriles) de Bactrocera tryoni (Froggatt) (Diptera: Tephritidae) y Bactrocera papayae (Drew and Hancock) en Australia tuvieron distribuciones en parches y sus compariciones con las predicciones de un modelo binomial negativo indicaron un nivel de agregacion a veces fue muy alto, particularmente en las densidades bajas durante de eradicacion. Un aumento en el promedio de la tasa de B. tryoni esteriles recapturadas en las dos formas de trampas no fue acompanado por una reduccion en su coeficiente de variacion y cuando las tasas de moscas recapturadas fue alto, el porcentaje de las trampas que capturaron ninguna mosca bajo solo un poco con un aumento en la tasa de las moscas recapturadas, esto indico que no es practicable bajar la heterogenicidad de dispersion de las moscas esteriles por medio de un aumento el numero de moscas liberadas. Muy a menudo se encontro un desajusto entre los patrones de dispersion de las moscas naturales y esteriles, y las implicaciones de esto para la eficiencia de la tecnica del insecto esteril (TIE) fueron investigadas en un estudio de simulacion con los grados de desajustes observados obtenidos de los datos del monitoreo y se considero que la razon general del numero de moscas esteriles a moscas naturales fueron 100:1. La simulacion indico que los desajustes en los patrones de dispersion pueden resultar en una tasa impuesta sobre el aumento de las moscas naturales de hasta 3.5 veces mas alta que la tasa intentada (i.e., 0.35 en vez de 0.1). El efecto de un desajuste siempre reduce la eficiencia de TIS. Se discute la razon para esta asimetria y una comparicion hecha con el sistema de hospedero-parasitoid y otros sistemas. Se sugiere una estrategia de liberacion para contrarrestar este efecto. (author)

Meats, A. [Fruit Fly Research Centre, School of Biological Sciences, University of Sydney A08, NSW 2006 (Australia)

2007-03-15

456

The geochemical and SrNd isotopic characteristics of Paleozoic fractionated S-types granites of north Queensland: Implications for S-type granite petrogenesis  

NASA Astrophysics Data System (ADS)

Moderately to strongly fractionated S-type granites crop out extensively (> 2500 km2) in the central and eastern parts of the Hodgkinson Province, north Queensland, Australia. The granites have been subdivided in two major supersuites: the garnet-bearing Whypalla and cordierite-bearing Cooktown Supersuites; and a number of minor suites—including the extremely fractionated Wangetti and Mount Alto Suites. Early formed magmatic tourmaline is a feature of the Wangetti and Mount Alto granites. Almost all of the S-type granites contain metasedimentary enclave material, while microdioritic enclaves are mostly notably absent. The S-type granites are felsic with a moderate SiO2 range (68–77%). Most elements are negatively correlated with increasing differentiation, including TiO2, FeOtot, MgO, CaO, Ba, Sr, Th, LREE, Eu, Zr, Hf, and ratios such as K/Rb; many decrease to very low levels. There are very few positively correlated elements: Rb, U, and to some extent Na2O. Geochemical differences between supersuites include higher CaO, Ba, Sr, Pb, and lower Rb, Sn, B, V in the Whypalla Supersuite. Geochemical variation within the granites is largely due to extensive crystal fractionation. Some of the S-type granites have FeO* and MgO contents of 2.5–3.0% or more indicating they do not represent simple sedimentary melts, but rather represent the presence of both cumulate and restitic material. Variable Nd and Sr signatures (?Nd between ? 2 and ? 6.5; initial Sr ratios between 0.709 and 0.715), suggest multiple components. The S-type granites intrude a very extensive, siliciclastic turbidite sequence that is isotopically evolved (e.g., ?Nd mostly ? 12.0 to ? 15.0 at 270 Ma), and generally too mature (too CaO poor) to produce S-type granites. Isotopic and chemical modeling show that although magma-mixing is permissible, the levels permissible (< ca. 20–25% basaltic input), are not large enough to explain the signature of the granites. Instead the data suggest that the S-type granites were derived from unexposed metasedimentary source rocks at depth, consistent with the geology and accretionary tectonic models for the region. Comparison of the S-type granites with nearby similarly extensively fractionated Carboniferous I-type granites shows contrasting geochemical behaviour which appears to relate to ASI-driven changes in solubility of accessory phases. Fractionating peraluminous magmas, like the North Queensland S-type granites, are characterised by increasing ASI, P2O5 and strongly decreasing Th, LREE, HREE, Zr and Y. In contrast, P2O5 strongly decreases while ASI, Th, LREE, HREE, Zr and Y increase or are constant within the I-type granites. These differences, which are also observable between I- and S-type granites elsewhere, provide evidence of how the nature of the source can control the behaviour of even the most fractionated granites.

Champion, David C.; Bultitude, Robert J.

2013-03-01

457

Can peer-to-peer car sharing "go big"?  

NSDL National Science Digital Library

Let a Stranger Drive Your Car? More Owners Say 'Yes'http://www.npr.org/2012/03/06/147962028/let-a-stranger-drive-your-car-more-owners-say-yesPersonal car-sharing is a new twist on auto rentalshttp://articles.latimes.com/2012/feb/15/local/la-me-personal-car-sharing-20120215Zipcar invests in Wheelzhttp://www.boston.com/Boston/businessupdates/2012/02/zipcar-invests-wheelz/VUMLqJn40Y2EEuvIEfCRtL/index.htmlWheelz receives $13.7 million to expand beyond Stanfordhttp://www.stanforddaily.com/2012/02/23/wheelz-receives-13-7-million-to-expand-beyond-stanford/A brief history of car sharinghttp://www.portlandonline.com/transportation/index.cfm?a=370287&c=45195Taking the Wheel: Manufacturers' Catalogs from the First Decade of American Automobileshttp://digitalgallery.nypl.org/nypldigital/explore/dgexplore.cfm?topic=all&col_id=153More and more people are looking for ways to save money, and some of this can be done through sharing big-ticket consumer goods. Many people might rent out a room in their home to a student, so why not offer up the use of their car to responsible individuals? Over the past couple of decades, a number of car-sharing services have popped up, and the blossoming of social media has helped them grow by leaps and bounds. One such service is Wheelz, which has gained a foothold in places like Palo Alto, California and northern Virginia. These organizations are formally known as peer-to-peer car sharing services, and they represent a movement towards renting or sharing certain services (such as cars) rather than owning these physical assets outright. Commenting on this development, transportation researcher Susan Shaheen remarked that the concept faces several key hurdles. One is that it will be necessary to clarify car insurance laws, and the other is that it may be difficult to craft a profitable business model. The first link will take interested parties to a short segment from NPR's Morning Edition about the growth in peer-to-peer car sharing services. The second link will lead users to a recent news article from the Los Angeles Times about the growth of these services in the Bay Area. The third link whisks users to an update from the Boston Globe about the Zipcar's recent $13.7 million investment in Wheelz. The fourth link leads to an article from the Stanford Daily about the recent growth of Wheelz in Palo Alto and the surrounding area. Those people interested in the history of car sharing will enjoy the fifth link, provided by the Portland Bureau of Transportation. The final link will take curious visitors to a wonderful digital collection from the New York Public Library that offers a sampling from the pages of early automobile manufacturers' catalogs.

Grinnell, Max

2012-03-09

458

Gas flow anomalies in seismogenic zones in the Upper Tiber Valley, Central Italy  

NASA Astrophysics Data System (ADS)

Cold CO2 gas emission sites in rainwater-filled pools, so called mofettes, are widely distributed all over Italy. Their gas reservoirs, mostly having a high CO2 content, have a magmatic and/or metamorphic origin. Temporal variations in fluid expulsions were observed at the mofettes of Caprese Michelangelo during the period from 2002 to 2005. These observations were made possible by using a new approach: photographic time-series. A first interpretation of these fluid expulsions was based on meteorological/hydrogeological explanations. However, our long-term observations show that these processes may merely be a side effect. The probable main reason for the anomalous emissions is the long-term variation in the long-distance fluid transport process from the reservoir induced by the local tectonic settings. In the northern part of the Alto Tiberina Fault, a fault intersection was reactivated by a seismic sequence which started on 2001 November 26, and continued for approximately four months. The magnitude of the main shock was MW = 4.6. As revealed by the drilling of a deep borehole, dug in the direct vicinity, overpressurized fluids trapped at a depth of 3700 m could be activated as a consequence of the improved transport conditions, that is, the fracture apertures that materialized as a result of the rupture process. A migration of the hypocentres towards the surface provides hints of a possible pore pressure diffusion process. The consequence is an increased fluid transport to the mofettes. The first indications of anomalous fluid expulsions at the mofettes of Caprese Michelangelo were detected 18 months after the seismic events.

Heinicke, J.; Braun, T.; Burgassi, P.; Italiano, F.; Martinelli, G.

2006-11-01

459

Karst aquifers recharge and its relation with flood formation in the Vipava/Vipacco basin  

NASA Astrophysics Data System (ADS)

In karst basins a strong mutual interaction between streamflow and groundwater is often observed and can affect flood formation and runoff propagation. Aiming at characterising the runoff regime of the transnational Vipava/Vipacco karst basin (650km2, Eastern Alps, SLO/I), which is a case study of the FP7 KULTURisk research project, the natural groundwater recharge was investigated. The Vipava/Vipacco river is a left tributary of the Sona/Isonzo river, and its main course is 50km long. A large amount of data, provided by the Alto Adriatico Water Authority and by the Slovenian Environment Agency was collected, including time series from 7 stream gauges, 10 groundwater level measurement station and 9 rain gauges. Data covers a time period lasting since 1948 until 2011. Groundwater level data are available at a daily scale, and runoff and precipitation time-series are available both at daily and, for some stations, at hourly scale. An indirect approach, based on the stochastic univariate and multivariate correlation between groundwater levels, precipitation and hydrometric time series was adopted. It allowed to evaluate the characteristics of the groundwater recharge, due both to infiltration and to percolation from the stream channel, and its effect on the baseflow. As the hydrological response of a karst aquifer to an intense precipitation is strongly characterised by its initial conditions, a more detailed analysis was conducted for the most relevant flood events since 1998, in order to study the groundwater feedback to a severe water input in areas close to the stream channel. Considering flood events, it also allowed to neglect the evapotranspiration, and to estimate the basin infiltration. This section of the study is preliminar to model the basin in view of predicting flood events.

Caronna, Paolo; Rusjan, Simon; Barontini, Stefano; Grossi, Giovanna; Brilly, Mitja; Ranzi, Roberto

2013-04-01

460

Non-LTE analysis of neutral magnesium in cool stars  

NASA Astrophysics Data System (ADS)

Calculations of the statistical equilibrium of magnesium in the solar photosphere have shown that NLTE populations hardly affect Mg line formation in the Sun. However, in metal-poor dwarfs and giants the influence of electron collisions is reduced, and the ultraviolet radiation field, enhanced due to reduced background line opacity, results in more pronounced NLTE effects. In the photosphere of a cool star excitation and ionization due to collisions with neutral hydrogen can outweigh electron collisions. Analyses based on NLTE populations lead to significantly higher Mg abundances than those calculated from LTE. We calculate magnesium abundances in 10 cool dwarfs and subgiants with metallicities from -2.29 to 0.0. The results are based on spectra of high-resolution and high signal-to-noise ratio. Stellar effective temperatures are derived from Balmer line profiles, surface gravities from Hipparcos parallaxes and the wings of the Mg Ib triplet, and metal abundances and microturbulence velocities are obtained from LTE analyses of Fe Ii line profiles. For stars with metallicities between -2.0 < [Fe/H] < -1.0 abundance corrections Delta [Mg/H]NLTE-LTE ~ 0.05-0.11 are found. As expected the corrections increase with decreasing metal abundance, and they increase slightly with decreasing surface gravity. We also calculate the statistical equilibrium of magnesium for series of model atmospheres with different stellar parameters and find that Delta [Mg/H]NLTE-LTE increases with effective temperature between 5200 and 6500 K. For extremely metal-poor stars the abundance corrections approach Delta [Mg/H]NLTE-LTE ~ 0.23 at [Fe/H] ~ -3.0. Based on observations collected at the German-Spanish Astronomical Center, Calar Alto, Spain and Beijing Astronomical Observatory, Xinglong, China

Zhao, G.; Gehren, T.

2000-10-01

461

Performance of a commercial optical CT scanner and polymer gel dosimeters for 3-D dose verification  

SciTech Connect

Performance analysis of a commercial three-dimensional (3-D) dose mapping system based on optical CT scanning of polymer gels is presented. The system consists of BANG{sup reg}3 polymer gels (MGS Research, Inc., Madison, CT), OCTOPUS{sup TM} laser CT scanner (MGS Research, Inc., Madison, CT), and an in-house developed software for optical CT image reconstruction and 3-D dose distribution comparison between the gel, film measurements and the radiation therapy treatment plans. Various sources of image noise (digitization, electronic, optical, and mechanical) generated by the scanner as well as optical uniformity of the polymer gel are analyzed. The performance of the scanner is further evaluated in terms of the reproducibility of the data acquisition process, the uncertainties at different levels of reconstructed optical density per unit length and the effects of scanning parameters. It is demonstrated that for BANG{sup registered}3 gel phantoms held in cylindrical plastic containers, the relative dose distribution can be reproduced by the scanner with an overall uncertainty of about 3% within approximately 75% of the radius of the container. In regions located closer to the container wall, however, the scanner generates erroneous optical density values that arise from the reflection and refraction of the laser rays at the interface between the gel and the container. The analysis of the accuracy of the polymer gel dosimeter is exemplified by the comparison of the gel/OCT-derived dose distributions with those from film measurements and a commercial treatment planning system (Cadplan, Varian Corporation, Palo Alto, CA) for a 6 cmx6 cm single field of 6 MV x rays and a 3-D conformal radiotherapy (3DCRT) plan. The gel measurements agree with the treatment plans and the film measurements within the '3%-or-2 mm' criterion throughout the usable, artifact-free central region of the gel volume. Discrepancies among the three data sets are analyzed.

Xu, Y.; Wuu, C.-S.; Maryanski, Marek J. [Department of Radiation Oncology, Columbia University, New York, New York 10032 (United States); Department of Radiation Oncology, Columbia University, New York, New York 10032, and MGS Research Inc., Madison, Connecticut 06443 (United States)

2004-11-01

462

Computer-aided detection in full-field digital mammography: detection in dependence of the BI-RADS categories.  

PubMed

The object of this study was to determine the performance of a computer-aided detection system in full-field digital mammography (Senographe 2000D, General Electric, Buc, France) in detecting carcinomas in breasts in dependence of the initial Breast Imaging Reporting and Data System (BI-RADS) categories. A total of 226 mediolateral oblique (MLO) and 186 craniocaudal (CC) view mammograms of histologically proven cancers were retrospectively evaluated with a primary digital computer-aided detection system (Image Checker V2.3; R2 Technology, Los Altos, CA). According to BI-RADS of the American College of Radiology (ACR), the lesions were classified in MLO view as BI-RADS 1 in 2 cases, BI-RADS 2 in 11 cases, BI-RADS 3 in 37 cases, BI-RADS 4 in 56 cases, and BI-RADS 5 in 120 cases, and in CC view as BI-RADS 1 in 2 cases, BI-RADS 2 in 8 cases, BI-RADS 3 in 26 cases, BI-RADS 4 in 46 cases, and BI-RADS 5 in 104 cases. The computer-aided detection system shows markers also in mammograms classified as BI-RADS categories 1-3 by the radiologist. Furthermore, BI-RADS categories 4 and 5 in most cases demonstrate masses in mammography. With increasing BI-RADS category, the computer-aided detection system shows decreasing numbers of overlooked carcinomas. In MLO view, no markers were found in 100% (2/2), 81.8% (9/11), 59.5% (22/37), 46.4% (26/56), and 15% (18/120) for BI-RADS categories 1-5, respectively. False-positive markers, however, were seen in 0.5 per image (205/412). In conclusion, the high rate of false-positive markers shows that the specificity of the computer-aided detection system is limited and that improvements are necessary. PMID:16409582

Obenauer, Silvia; Sohns, Christian; Werner, Carola; Grabbe, Eckhardt

463

PYRAMIR: Calibration and Operation of a Pyramid Near-Infrared Wavefront Sensor  

NASA Astrophysics Data System (ADS)

The concept of pyramid wavefront sensors (PWFSs) has been around about a decade by now. However there is still a great lack of characterizing measurements that allow the best operation of such a system under real life conditions at an astronomical telescope. In this article we, therefore, investigate the behavior and robustness of the pyramid infrared wavefront sensor PYRAMIR mounted at the 3.5 m telescope at the Calar Alto Observatory under the influence of different error sources both intrinsic to the sensor and arising in the preceding optical system. The intrinsic errors include diffraction effects on the pyramid edges and detector readout noise. The external imperfections consist of a Gaussian profile in the intensity distribution in the pupil plane during calibration, the effect of an optically resolved reference source, and noncommon-path aberrations. We investigated the effect of three differently sized reference sources on the calibration of the PWFS. For the noncommon-path aberrations the quality of the response of the system is quantified in terms of modal cross talk and aliasing. We investigate the special behavior of the system regarding tip-tilt control. From our measurements we derive the method to optimize the calibration procedure and the setup of a PWFS adaptive optics (AO) system. We also calculate the total wavefront error arising from aliasing, modal cross talk, measurement error, and fitting error in order to optimize the number of calibrated modes for on-sky operations. These measurements result in a prediction of on-sky performance for various conditions.

Peter, D.; Feldt, M.; Dorner, B.; Henning, T.; Hippler, S.; Aceituno, J.

2008-08-01

464

AIDSCAP policy dialogue in Honduras: establishing the politics of prevention. Policy profile.  

PubMed

Two meetings were held in August 1993 in Honduras to deliver results of assessments of the potential impact of HIV/AIDS in Tegucigalpa, the capital (where 12% of adults may be infected with HIV by 2000), and San Pedro Sula, Honduras's largest industrial city (where 17% of adults are expected to be infected), and to spark a national dialogue about the need to slow the spread of the epidemic. The economic impact will be great because most of those affected will be workers 20-30 years old. AIDS treatment costs families approximately 14 months of an average Honduran's income and AIDS illness and premature death diminishes an individual's potential income by almost two-thirds. The tools used in the Honduran analysis by AIDSCAP were mathematical modeling of the epidemic, economic impact assessments, and creation of policy dialogue. AIDSCAP trained Ministry of Health employees to gather data, which were modeled using the computer programs EIPMODEL, DemProj, and AID. Data were presented in a way to stimulate dialogue among policy makers, the media, and international donors. Initial meetings were chaired by the president and first lady of Honduras, and this initial dialogue led to the creation of CONALSIDA (Comision de Alto Nivel de Apoyo en La Lucha Contra el SIDA), a high-level AIDS policy-making body to be chaired by the first lady. This generated extensive coverage in the newspapers and on television news and talk shows. Because this initial effort will not sustain development of the necessary positive policy environment, AIDSCAP is developing ways to disseminate the information to a wider audience. PMID:12288833

Forsythe, S; Sweat, M

1993-12-01

465

NOTE: Multileaf collimator end leaf leakage: implications for wide-field IMRT  

NASA Astrophysics Data System (ADS)

The multi-leaf collimator (MLC) of a particular linear accelerator vendor (Millennium MLC, Varian Medical Systems, Palo Alto, CA, USA) has a maximum leaf extension of 14.5 cm. To achieve intensity modulated radiotherapy (IMRT) for fields wider than 14.5 cm all closed leaf pairs are restricted to placement inside the field. Due to the rounded leaf end design of the MLC end leaf leakage will occur in the treatment field. The implementation of direct aperture optimization in the IMRT module of a radiotherapy treatment planning system (Pinnacle, Philips Radiation Oncology Systems, Milpitas, CA) has facilitated the delivery of IMRT fields wider than 14.5 cm. The end leaf leakage of the Millennium MLC has been characterized for 6 MV photons using gafchromic and radiographic film, and the accuracy of the planning system verified. The maximum leakage measured for a single field was 0.39 cGy MU-1 for a 0 mm leaf gap and 0.51 cGy MU-1 for a 0.6 mm leaf gap. For a clinical IMRT field leaf end leakage contributed an additional 2-3 Gy over the course of treatment. The planning system underestimated the magnitude of end leaf leakage by 20-40%. The ability to deliver IMRT fields wider than 14.5 cm with the Millennium MLC has improved the efficiency and flexibility of IMRT treatments; however, significant extra dose can be introduced due to end leaf leakage. Caution should be exercised when delivering wide field IMRT as it is not a complete panacea. Any significant occurrences of end leaf leakage predicted by the planning system should be independently verified prior to delivery.

Hardcastle, N.; Metcalfe, P.; Ceylan, A.; Williams, M. J.

2007-11-01