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: August 15, 2014.
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)

SummaryStudies of groundwater quality in arid and semi-arid lands show that irrigation return flow is one of major factors contributing to aquifer salinization. Existing mathematical models do not account explicitly for solute recycling during irrigation on a daily scale, which is considered as an important salinization input. The main objective of this research was to develop a mathematical numerical model that can simulate impact of irrigation return flow by coupling water and solute fluxes at the soil surface with quality of water pumped from the aquifer. This was obtained with a Quasi-3D model representing flow in the vadose zone - aquifer system by series of 1D Richards' equations in a variably-saturated zone and by a 3D flow equation in groundwater. The 3D advection-dispersion equation is solved in the entire domain. Concentration of irrigation water is calculated at each time step as a function of concentration of both surface water and groundwater extracted at specific locations. The model was applied to simulate the impact of irrigation on groundwater salinization of Alto Piura aquifer (Northern Peru) over thirty years. Three scenarios were considered: (i) use of flood irrigation and groundwater extraction (the present situation); (ii) increase of groundwater pumping by 50% compared to the first scenario; and (iii) transition from flood irrigation to drip irrigation, thus decreasing irrigation volume by around 60% compared to the first scenario. Results indicate that in different irrigation areas, the simulated increase rates of total dissolved solids in groundwater vary from 3-5 to 15-17 mg/L/year, depending on hydrogeological and hydrochemical conditions, volumes of water extracted, and proportion between surface water and groundwater applied. The transition from flood irrigation to drip irrigation decreases the negative impact of return flow on groundwater quality; however drip irrigation causes faster soil salinization compared to flood irrigation. Irrigation return coefficients were calculated in the order of 21-23% and 22-24% for the first and second scenarios, respectively.

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

2013-03-01

2

Goat Herders in Piura, Peru. Inhabitants of the Uninhabited Region.  

National Technical Information Service (NTIS)

The report describes and analyzes the complex ecological, social, economics, and political context of goat husbandry in Piura, Peru. An overview of herd composition and dynamics, management practices, production and marketing is first provided. Then nine ...

A. Perevolotsky

1985-01-01

3

Importancia de los Caprinos en el Ecosistema y en la Economia Campesina del Despoblado de Piura (Importance of Goats in the Ecosystem and Rural Economy of the Piura Desert).  

National Technical Information Service (NTIS)

Goat population has diminished in recent years while cattle is raising. Goat effects on the ecosystem are stereotyped, because the disturbances caused by other livestock were alike to those related to goats. It is stressed that Piura deserts are character...

H. Cordova Aguilar N. Bermex de Falen

1984-01-01

4

[Intra-domiciliary capture of Panstrongylus rufotuberculatus (Champion, 1899) (Hemiptera, Reduviidae, Triatominae) in Piura, Peru].  

PubMed

Panstrongylus rufotuberculatus is widely distributed in Central and South America. In Peru, it has been found in Tumbes, Piura, and Cuzco. The authors report the presence of P. rufotuberculatus in Chirinos-La Pareja, Suyo district, Ayabaca Province, Piura Region, Peru. Twenty-eight specimens were collected in two of 15 dwellings: three 2nd instar, four 3rd instar, two 4th instar, and eight 5th instar nymphs, three male and eight female, in an intra-domiciliary colony of guinea pigs (Cavia porcellus, raised indoors as a source of diet protein) and beds and bedroom walls. None of the fecal samples were naturally infected with Trypanosoma cruzi. This is the first report of synanthropic presence of P. rufotuberculatus in the region. The finding emphasizes the need for careful entomological and epidemiological surveillance of this and other triatomine species in the Region. PMID:17700958

Marín, Edgard; Santillán, Rosa; Cuba, César; Jurberg, José; Galvão, Cleber

2007-09-01

5

Estimating Climate Impacts on Cholera in Piura, Peru during the 1997-98 El Niño  

NASA Astrophysics Data System (ADS)

In this retrospective study, I examine the impacts of climate on cholera incidence in Piura, Peru during the strongest El Niño of the 20th century in 1998. Bivariate regression analyses were conducted to assess the impact of climate variables (a) Niño 3.4 sea surface temperature anomaly (SSTA), (b) Niño 1+2 SSTA, (c) Paita SSTA, (d) maximum temperature anomaly (TMAXA), (e) minimum temperature anomaly (TMINA), (f) mean temperature anomaly (TMEANA), and (g) total rainfall on cholera incidence at the district level. Temporal lag associations from zero to 7 months were also explored. The strongest associations were mapped in ArcGIS 9.2 to explore the spatial variation of the climate-cholera associations. The results showed that the strength of associations varied by climate variable, temporal lag and district. The climate variable with the strongest association was rainfall (1 and 2 month lags) and explains how cholera may have spread via flooding during the 1997-98 El Niño. Impacts were generally found in districts located on the west coast of Piura; however, associations were also observed in central Piura. This study illustrates the potential usefulness of temporal-spatial climate and health information for future epidemic preparedness and infectious disease prevention. It also demonstrates the challenges faced by public health scientists, particularly in developing countries, in the assessment of climate impacts on human health.

Ramirez, I. J.

2012-12-01

6

Low Latitude Field-aligned Irregularities Observed In The E Region With The Piura Vhf Radar: Morphology, Long-term Periodicities and Their Relationship With Sporadic E Layers  

NASA Astrophysics Data System (ADS)

Between 1991 and 1999, the Piura VHF radar (5.2S, 80.6W, 7.0N dip latitude) in northern Peru has been operated intermittently to observe coherent backscatter from 3-m E-region field-aligned irregularities. These echoes are detected by pointing the antenna beam to the north at 14 zenith angle, i.e., perpendicular to the magnetic field lines, in an area just outside the equatorial electrojet zone and far from mid latitudes. Studies of these observations have shown that the spectral and diurnal characteris- tics of backscatter are reminiscent of midlatitude E region irregularities rather than those at the equatorial electrojet. Since January 2000, "continuous" (2 minutes every 12 minutes) observations have been started in order to study in more detail the diur- nal and seasonal morphology of backscatter. In this paper, we analyze these data to study the morphology of the echoes (diurnal and seasonal) and compare it to the mor- phology of sporadic E (Es) layers observed in low latitude ionosonde stations. The results show the occurrence of the Piura E region irregularities to be in close relation with the characteristics of Es layers and their morphology. This indicates that E re- gion coherent backscatter even at very low latitudes is basically of the same nature as that observed at midlatitude, therefore it relates to plasma instabilities operating inside Es layers. In addition, we investigate the long-term (periods of days) variability seen in echo occurrence and intensity of the Piura backscatter and examine how these variations compare with similar ones measured at midlatitude, and also their possible relationship with planetary waves which are known to exist in the mesosphere and lower thermosphere.

Chau, J. L.; Haldoupis, C.

7

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

8

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

9

FaCToReS aSoCIaDoS a La INFeSTaCIÓN INTRaDoMICILIaRIa PoR Aedes aegypti eN eL DISTRITo De TaMboGRaNDe, PIURa 2004  

Microsoft Academic Search

Objectives: To determine the associated factors to the intradomiciliary infestation for Ae. aegypti in Tambogrande district, Piura (Northern Coastal of Peru). Material and methods: We conducted a case control study in the capital of district of Tambogrande, in December of the 2004. We regarded as housing-case (Hc) to the positive housing for Ae. aegypti infestation, and control housing (Ho) to

Edwar J. Pozo; Miguel Neyra C; Ehunise Vílchez P; Mónica Meléndez M

10

Altos-Model 8B Wind Turbine Generator. Performance Report.  

National Technical Information Service (NTIS)

This interim report is designed to provide preliminary data on the performance of the Altos, Model 8B, under conditions to which it is likely to be subjected while in normal use. All instruments used during the testing of the Altos were maintained in cali...

K. K. Higashi

1979-01-01

11

A Microprocessor Development System for the ALTOS Series Microcomputers.  

National Technical Information Service (NTIS)

An ALTOS series microcomputer is being used as the host computer in a microprocessor development system (MDS). The MDS hardware, consisting of the PRO-LOG STD bus, a Z80 cpu card, 2K bytes EPROM and 36K bytes random access memory, is controlled by the hos...

S. M. Hughes

1981-01-01

12

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

13

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

14

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

15

CAFE: Calar Alto Fiber-fed Échelle spectrograph  

NASA Astrophysics Data System (ADS)

We present here CAFE, the Calar Alto Fiber-fed Échelle spectrograph, a new instrument built at the Centro Astronomico Hispano Alemán (CAHA). CAFE is a single-fiber, high-resolution (R ~ 70 000) spectrograph, covering the wavelength range between 3650-9800 Å. It was built on the basis of the common design for Échelle spectrographs. Its main aim is to measure radial velocities of stellar objects up to V ~ 13-14 mag with a precision as good as a few tens of m s-1. To achieve this goal the design was simplified at maximum, removing all possible movable components, the central wavelength is fixed, as is the wavelength coverage; there is no filter wheel, etc. Particular care was taken with the thermal and mechanical stability. The instrument is fully operational and publically accessible at the 2.2 m telescope of the Calar Alto Observatory. In this article we describe (i) the design, summarizing its manufacturing phase; (ii) characterize the main properties of the instrument; (iii) describe the reduction pipeline; and (iv) show the results from the first light and commissioning runs. The preliminar results indicate that the instrument fulfills the specifications and can achieve the planned goals. In particular, the results show that the instrument is more efficient than anticipated, reaching a signal-to-noise of ~20 for a stellar object as faint as V ~ 14.5 mag in ~2700 s integration time. The instrument is a wonderful machine for exoplanetary research (by studying large samples of possible systems cotaining massive planets), galactic dynamics (highly precise radial velocities in moving groups or stellar associations), or astrochemistry.

Aceituno, J.; Sánchez, S. F.; Grupp, F.; Lillo, J.; Hernán-Obispo, M.; Benitez, D.; Montoya, L. M.; Thiele, U.; Pedraz, S.; Barrado, D.; Dreizler, S.; Bean, J.

2013-04-01

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

Ethnobotanical notes about some uses of medicinal plants in Alto Tirreno Cosentino area (Calabria, Southern Italy)  

Microsoft Academic Search

BACKGROUND: The present paper contributes to enrich the ethnobotanical knowledge of Calabria region (Southern Italy). Research was carried out in Alto Tirreno Cosentino, a small area lying between the Tyrrhenian coast and the Pollino National Park. In the area studied medicinal plants still play a small role among farmers, shepherds and other people who live far from villages and built-up

Maria Lucia Leporatti; Massimo Impieri

2007-01-01

18

Education in the Palo Alto Schools vs. Citizens for Excellence in Education. A Report.  

ERIC Educational Resources Information Center

This document is the work of a committee from a group of parents of Palo Alto known as the Citizens for a Multicultural Program. The group organized out of concern that an organized attack on the school district's multicultural program might destroy it before it had even begun. This report is intended to examine the source material of the Citizens…

Cottrell, Mary; And Others

19

Development of robots for rehabilitation therapy : The Palo Alto VA\\/Stanford experience  

Microsoft Academic Search

Abstract—For over 25 years, personal assistant robots for severely disabled individuals have been in development . More recently, using robots to deliver rehabilitation therapy has been proposed . This paper summarizes,the development,and clinical testing of three mechatronic systems for post-stroke therapy conducted at the VA Palo Alto in collaborationwith Stanford University. We describe the philosophy and experiences that guided their

Charles G. Burgar; Peter S. Lum; Peggy C. Shor; H. F. Machiel Van der Loos

2000-01-01

20

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

Federal Register 2010, 2011, 2012, 2013

...Inc.; Alto Group Holdings, Inc.; Bizrocket.Com Inc.; Fox Petroleum, Inc.; Geopulse Explorations Inc.; Global Technologies...accuracy of press releases concerning the company's revenues. 4. Fox Petroleum, Inc. is a Nevada corporation based in New...

2012-09-19

21

Brief Therapy Based on Interrupting Ironic Processes: The Palo Alto Model  

PubMed Central

The model of brief therapy developed by Fisch, Weakland, Watzlawick, and colleagues in Palo Alto is based on identifying and interrupting ironic processes that occur when repeated attempts to solve a problem keep the problem going or make it worse. Formulations of ironic problem-solution loops provide a template for assessment and strategic intervention, indicating where to look to understand what keeps a problem going (look for “more of the same” solution) and what needs to happen for the complaint to be resolved (someone must apply “less of the same” solution). Supporting research is preliminary but suggests this approach may be well suited for change-resistant clients.

Rohrbaugh, Michael J.; Shoham, Varda

2009-01-01

22

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

23

The Gran Telescopio Canarias and Calar Alto Virtual Observatory Compliant Archives  

NASA Astrophysics Data System (ADS)

The Gran Telescopio Canarias and Calar Alto archives are the result of the collaboration agreements between the Centro de Astrobiología 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 Centro de Astrobiología. 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, which guarantees a high level of data accessibility and handling. In this paper we describe the main characteristics and functionalities of both archives.

Alacid, J. M.; Solano, E.; Esteban, F. J.; Velasco, A.

2014-05-01

24

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.] [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)] [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.] [Philippine National Oil Co.-Energy Development Corp., Fort Bonifacio (Philippines). Geothermal Div.

1993-10-01

25

Fuel dynamics by using Landscape Ecology Indices in the Alto Mijares, Spain  

NASA Astrophysics Data System (ADS)

Land abandonment in Mediterranean regions has brought about a number of management problems, being an increased wildfire activity prevalent among them. Agricultural neglect in highlands resulted in reduced anthropogenic disturbances and greater landscape homogeneity in areas such as the Alto Mijares in Spain. It is widely accepted that processes like forest fires, influence structure of the landscape and vice versa. Fire-prone Mediterranean flora is well adapted to this disturbance, exhibiting excellent succession capabilities; but higher fuel loads and homogeneous conditions may ally to promote vegetation recession when the fire regime is altered by land abandonment. Both succession and recession make changes to the landscape structure and configuration. However, these changes are difficult to quantify and characterize. If landscape restoration of these forests is a management objective, then developing a quantitative knowledge base for landscape fuel dynamics is a prerequisite. Four classified LandsatTM satellite images were compared to quantify changes in landscape structure between 1984 and 1998. An attempt is made to define landscape level dynamics for fuel development after reduced disturbance and fuel accumulation that leads to catastrophic fires by using landscape ecology indices. By doing so, indices that best describe the fuel dynamics are pointed. The results indicate that low-level disturbance increases heterogeneity, thus lowers fire hazard. No disturbance or severe disturbance increases homogeneity because of vegetation succession and may lead to devastating fires. These fires could be avoided by human induced disturbance like controlled burning, harvesting, mechanical works for fuel reduction and other silviculture measures; thus bringing in more heterogeneity in the region. The Alto Mijares landscape appears to be in an unstable equilibrium where succession and recession are at tug of war. The effects are evident in the general absence of the climax species of Quercus ilex. It have also been recognised that just one index is rarely sufficient to describe the complex dynamics in any landscape; it is usually a group of indices that needs to be consulted in order to perceive the wider picture. The study indicates that there is a need for landscape and social restoration in areas like Alto Mijares to make best use of available resources and avoid catastrophic fires.

Iqbal, J.; Garcia, C. V.

2009-04-01

26

CARMENES at PPVI. Low-Resolution Spectroscopy of M Dwarfs with CAFOS at Calar Alto  

NASA Astrophysics Data System (ADS)

We conduct long observational campaigns with CAFOS at the 2.2. m Calar Alto telescope to obtain low-resolution (R~1500) spectra of poorly-known M dwarfs and candidates that are bright enough to be considered as potential CARMENES targets. We perform 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 TiO-n, CaH-n, VO-n and PC-n. We also measure chromospheric activity indicators. Up to now, over 400 M dwarfs have been observed and analysed, many of which had not been spectroscopically investigated yet.

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

2013-07-01

27

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

28

Streamflow forecast in the Alto do Rio Doce watershed in Brazil, using hydrological and atmospheric model  

NASA Astrophysics Data System (ADS)

Electrical energy in Brazil depends essentially on the streamflow, as hydropowers accounts for up to 79% of the total electrical energy installed capacity. Therefore, streamflow forecasts are very important tools to assist in the planning and operation of Brazilian hydroelectric reservoirs. This study evaluated the performance of a distributed hydrological model, Soil and Water Assessment Tool (SWAT) daily streamflow forecasts into four Reservoirs sited in the Alto do Rio Doce Watershed, in Southeast of Brazil. SWAT model was used with precipitation forecast from the regional meteorological model MM5. The calibration and validation processes of SWAT were accomplished using data from four monitoring stations. The model has been run for the 2010-2012 period, and while the apr/2010-set/2011 period has been used for calibration conducted manually, the validation reached the rest of the period. The manual calibration was conducted by the means of sensibility tests of parameters that control surface runoff and groundwater flow, specially the surlag and alpha_bf, respectively the surface runoff lag coefficient and the baseflow recession constant. The daily and monthly Nash-Sutcliffe, R2 and the mean relative error performance indicators were used to assess the relative performance of the model. Results showed that streamflow forecast was very similar toobservations, except in reservoirs with lower drainage areas, where the model did not simulated the beginning of the flood (Dec-Feb). The streamflow forecasts was strongly dependent on the quality of precipitation forecasts used. Given that no correction in the simulated rainfall by the MM5 model in the Alto do Rio Doce watershed has been conducted and no automated calibration method was applied to the parameters of the hydrologic model, we can conclude that the application of the SWAT hydrologic model employing the output data from the MM5 atmospheric model for the streamflow forecast was shown to be a tool of great potential for real-time operation of reservoirs.

Silva, J. M.; Saad, S. I.; Palma, G.; Rocha, H.; Palmeira, R. M.; Silva, B. L.; Pessoa, A. A.; Ramos, C. G.; Cecchini, M. A.

2013-05-01

29

Today's Teenagers: A Needs Assessment and Feasibility Study of Programs and Services for Palo Alto Area Adolescents.  

ERIC Educational Resources Information Center

Conducted for the Palo Alto Adolescent Services (PAASC) and other social service agencies serving the adolescent population in North Santa Clara County, California, this report is designed to assess the adequacy of existing services and resources within these communities. The identified areas of need address the following concerns: housing,…

Nungesser, Lonnie G.; Gallatin, Linda

30

A School Without Failure: A Description of the Glasser Approach in the Palo Alto Unified School District.  

ERIC Educational Resources Information Center

Glasser builds his alternative, a "School Without Failure," on an analysis of what children need to achieve a successful identity and on an examination of the ways in which schools affect children to teach them failure. The author discusses the Glasser approach and describes an attempt to implement the approach in a Palo Alto elementary school.…

Keepes, Bruce D.

31

Alto Malema hydroelectric project: Terms of reference for pre-feasibility study including environmental impact statement. Export trade information  

SciTech Connect

The report assesses the feasibility of the proposed Alto Malema hydroelectric Facility, which will be located in Mozambique`s Zambezia Province. The Terms of Reference is divided into the following sections: (1) Introduction; (2) Technical Feasibility Study; (3) Environmental Assessment; (4) Obligations of Consultant; (5) Preparation of Proposal; (6) Evaluation of Proposal; Appendices A-C.

NONE

1997-07-01

32

Alto Malema hydroelectric project: Executive summary for pre-feasibility study including environmental screening assessment. Export trade information  

SciTech Connect

The report assesses the feasibility of the proposed Alto Malema hydroelectric Facility, which will be located in Mozambique`s Zambezia Province. The Executive Summary is divided into the following sections: (1) Preamble; (2) Introduction; (3) Previous Studies; (4) Electric Power Sector; (5) Project Description; (6) Construction Cost Estimate and Schedule; (7) Economic and Financial Analysis; (8) Environmental Screening.

NONE

1997-07-01

33

Instrumental social support and women's body composition in El Alto, Bolivia.  

PubMed

Instrumental social support, or aid in the form of labor or money, may exert a positive influence on economic welfare and food security. Several investigators have found a positive relationship between social support and nutritional status, while others have found a negative association between social support and central adiposity. In the rural Andes, extra-household economic cooperation has long been an important adaptive strategy, and the breakdown of these relationships is one reason for high rates of rural-to-urban migration, including to the Bolivian city of El Alto. This research investigates the influence of instrumental support on women's body composition. Information was collected on individual perception of instrumental support and anthropometric indicators of nutritional status including percent body fat (bioelectrical impedance analysis (BIA)), BMI, and distribution of fat on trunk relative to limbs (Ratio of subscapular to triceps skinfold (STR)), and multiple linear regression analysis used to test the prediction that instrumental social support is positively related to body fat stores. Controlling for age and household socioeconomic status, perceived access to one or more sources of instrumental support was positively and significantly related to overall levels of adiposity. There is no evidence that STR mediates the relationship between instrumental social support and body composition. This analysis offers support for the prediction that economic social support has direct effects on women's energy stores. The interpretation of these results is somewhat ambiguous given the high levels of overweight and obesity in this population. PMID:23913665

Hicks, Kathryn

2013-09-01

34

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

35

ENVIRONMENTAL EVALUATION OF FLUORIDE IN DRINKING WATER AT “LOS ALTOS DE JALISCO,” IN THE CENTRAL MEXICO REGION  

Microsoft Academic Search

Naturally occurring fluoride has been detected and quantified in drinking water in several cities of the “Los Altos de Jalisco” (LAJ) region. LAJ is located in the northeastern part of the state of Jalisco-Mexico, covering an area of 16,410 km with a population of 696,318 in 20 municipalities. Drinking water comes mainly from groundwater aquifers, located in the Trans-Mexican Volcanic

Roberto Hurtado; Jorge Gardea-Torresdey

2004-01-01

36

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

37

4D modelling of the Alto Tiberina Fault system (Northern Apennines, Italy)  

NASA Astrophysics Data System (ADS)

The Alto Tiberina Fault (ATF) in the Northern Apennines of Italy is a low-angle normal fault dipping to the East and accommodating up to 10 km of extension. The fault is ~70 km long and is the detachment for the SW-dipping Gubbio normal fault. The ATF fault system has been dramatically exhumed and the ATF footwall has evolved in a horst bounded to the east by ATF synthetic faults and to the west by the Corciano west-dipping normal fault. The fault has been widely studied over the last years in order to understand its mechanical behaviour, its present-day deformation rate and its seismological role. By using a wide data-set including subsurface data (seismic reflection profiles and boreholes) and surface geological data (new maps of the CARG project of Italy), we have reconstructed the 3D geometry of both the fault and of the main lithostratigraphic boundaries at the fault hanging-wall and foot-wall. The CARG map data were integrated by local observations and mapping using mobile GIS software (BeeGIS) and Android app (Geopaparazzi). Surface data were combined with seismic reflection profiles and wells interpretation and other data from available literature. The large amount of information were combined in MOVE software (Midland Valley Exploration ltd). Our reconstruction allows to i) build up a three-dimensional geological model of the subsurface including the main faults and lithostratigraphic boundaries; ii) identify a set of east-west trending faults the role of which was previously underestimated; iii) test a 3D-restoration of extension for the visualization of the time evolution and for the validation of the structural reconstruction. The restored structures are the main normal faults in the region. The sequential restoration was performed by taking into account the timing of deformation as derived from the literature. The model was sequentially restored according to the following chronological order from the latest to the oldest: 1a) last deformational event along Gubbio Normal Fault on ATF coeval with 1b) latest event along Corciano fault and 2) ATF detachment fault activity. The resulting maximum values of displacements has been calculated as: 1a) about 2300m with a throw of about 1600m (measured in the 3D model on the top of Carbonates surfaces cut off); 1b) about 1900m for the slip and 2900m for the throw (measured along this fault both on the top of Carbonates as on acoustic Basement cut off); 2) 8 km of maximum extension measured between Umbertide e Citta' di Castello and progressively decreases toward NW and SW.

De Donatis, Mauro; Susini, Sara; Mirabella, Francesco; Lupattelli, Andrea; Barchi, Massimiliano

2014-05-01

38

Low-Cost Sensor Network for Stream Flow Monitoring in the Alto Beni Region of Bolivia  

NASA Astrophysics Data System (ADS)

Lack of data is a persistent problem in hydrology and other field work in developing countries. Low cost monitoring devices allow investigators to maximize spatial coverage on a limited budget, as well as to minimize the financial risk of loss of instruments placed in vulnerable locations. This work contributes to an ongoing project to evaluate the sustainability of discharge from springs supplying gravity-fed potable water systems in the Alto Beni region of Bolivia where land use is rapidly changing from forest to agriculture. The approach is to estimate ground water recharge as a function of land use variables using a water balance model in several representative watersheds. Monthly stream discharge is currently estimated using monthly manual measurements of water level by a local technician. Continuous water level measurements will allow an improved estimate of the cumulative discharge, and generate data on statistical distribution of daily flow that may be useful to estimate discharge in similar, ungaged watersheds. Continuous water level measurements, along with available precipitation data, will allow analysis and comparison of the response of watersheds to individual precipitation events as a function of land use variables. We assembled a low cost level logging system for stream flow monitoring that measures and records distance up to 6 m to the nearest 25 mm every ten minutes, and runs for a month on six rechargeable AA batteries. The system consists of a sonic range finder sensor (MaxSonar-EZ2, Maxbotix Inc., Baxter, MN, 30), a temperature sensor (MCP9701, Microchip Technology Inc., Chandler, AZ, 0.25), and a datalogger (Hobo U12, Onset Computer Corp., Pocasset, MA, 104) along with a weather-resistant enclosure and common items for a total cost of 230 per unit. The level loggers were attached to bridges over three subject streams. A local technician visits the sites monthly to download data, replace the rechargeable batteries, and take a manual water level measurement. Simultaneous recording of temperature is necessary to correct the distance measurement for the temperature dependence of the speed of sound in air. We report the data processing, temperature correction procedure, and performance of the system relative to manual measurements and discuss suitability of the system for hydrological applications in other settings.

Rowe, M. D.; Fry, L. M.; Mihelcic, J. R.

2009-12-01

39

Evidence for active creep on the Alto Tiberina low angle normal fault inferred using GPS geodesy  

NASA Astrophysics Data System (ADS)

The Alto Tiberina fault (ATF) in central Italy is an upper crustal discontinuity dipping ~20° to the east-northeast. This structure is imaged by seismic reflection lines constrained by deep boreholes, and highlighted by intense microseismicity between latitudes ~43.2ºN and 43.5ºN. Outside of this latitude range, a more regional continuation of the structure is hypothesized, but is not well imaged by geophysical data. Balanced restored geological cross sections show that the structure represents a major fault accommodating up to 10 km of regional extension in central Italy since 3 Ma. However, no large earthquakes have been attributed to the ATF. Instead, large earthquakes in the area occur on high angle west dipping normal faults that cut the ATF hanging wall. Several lines of evidence, including fine grained foliations composed of velocity strengthening phyllosilicate minerals in exhumed fault rocks, high fault fluid over-pressures observed in footwall boreholes (~85% lithostatic pressure at 3.7-4.8 km depth), persistent microseismicity coincident with the ATF fault plane, and pattern of geodetically observed crustal motions suggest that the ATF may accommodate slip primarily by aseismic creep below ~4 km depth in the crust. Previous studies comparing GPS velocity data with a simple fault model consisting of an infinitely long edge dislocation buried in an elastic halfspace supported the shallow creeping hypothesis. But a newer more precise set of crustal motion data obtained from long-running campaign and continuous GPS stations is not adequately explained by an infinitely long creeping-fault model. To investigate whether the finite along-strike length of the ATF fault may help reconcile models for a shallow creeping ATF fault with the current GPS velocity data set, we used the TDEFNODE software to parameterize the ATF fault using the available high-resolution constraints on fault geometry provided by seismic reflection data and seismicity in the latitude range ~43.2ºN and 43.5ºN. We also test the regional extent of the fault by extending the fault model to the north and south of the well-imaged portion of the fault, assuming a 20º dip. We estimated fault coupling along-strike and down-dip to assess spatial variations in creep on the model fault. Our modeling suggests that the portion of the model fault in the latitude band ~43.1ºN to ~43.7ºN, encompassing the geophysically imaged ATF fault, creeps at nearly the full fault slip rate of ~2 mm/yr below a depths of 3-5 km. Our model corroborates previous inferences, suggesting active creep at shallow depth on the well-imaged portion of the ATF. However, outside of this range of latitudes, where the existence of a regional low angle normal fault is speculative, the model fault appears to be coupled to greater depths (7-8 km or deeper). Interestingly, the apparent locked zones to the north and south of the creeping zone correlate with the locations of instrumentally recorded large magnitude hanging wall earthquakes. In contrast, there have been no instrumentally recorded large magnitude earthquakes in the hanging wall overlying the creeping portion of the fault.

Rick, Bennett; Jackson, Lily; Mencin, David; Casale, Gabriele

2014-05-01

40

Alto Malema hydroelectric project: Technical report for pre-feasibility study including environmental impact statement. Export trade information  

SciTech Connect

The report assesses the feasibility of the proposed Alto Malema hydroelectric Facility, which will be located in Mozambique`s Zambezia Province. The Technical Report contains the following chapters: (1) Introduction; (2) Field Trip and Site Visit; (3) Project Setting - Global; (4) Project Setting - Local; (5) Hydrology Studies and Reservoir Simulation; (6) Power Study System; (7) Project Description; (8) Project Cost and Schedule; (9) Economic and Financial Analysis; (10) Legal and Regulatory Assessment; (11) Environmental Screening Assessment; (12) Conclusions and Recommendations; Appendices A-H.

NONE

1997-07-01

41

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

42

[Chagas disease: impact of Triatoma infestans control program in Alto del Carmen, Huasco Province, III Region Atacama, Chile].  

PubMed

A control program of Triatoma infestans has been carried out in Alto del Carmen, an endemic chagasic rural county in the III Region, Chile. The program started in 1988 with an attack phase consisting in a masshouse spraying with residual insecticide, followed by an entomological surveillance phase with health education for community participation and vector detection in eventually reinfested houses. A yearly evaluation in 1992, 1993, 1994 and 1995 was carried out in order to determine the effectiveness of vector control activities. In 1992, 24.1% of dwellings was infested, whereas in 1993, 1994 and 1995 the infestation rates were 3.9%, 2.8% and 4.0% respectively. The similar infestation rates found in 1993, 1994 and 1995 suggest passive dispersion of triatomas from areas without surveillance. Additionally, in 1994, 110 (16.0%) out of 688 examined people resulted serologically positive. It is noteworthy that all of the children in the 0-4 year age group--born after the attack phase--resulted serologically negative. This fact may indicate the interruption of vectorial transmission of Chagas' disease in Alto del Carmen county. It is concluded that the control activities performed in the county constitute good strategies to the Nacional Program of Control of T. infestans, but for the success of such a program it is necessary to integrate the efforts of all endemic areas with an active community participation. PMID:9196951

González, J; Contreras, M C; Schenone, H; Adaos, H; Cabezas, R

1996-01-01

43

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

NASA Astrophysics Data System (ADS)

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 and evaluate the kimberlite bodies. The kimberlites were emplaced through Karoo Supergroup sandstones and shales, have eruption ages contemporaneous with the sand-dominated Cretaceous-age Calonda Formation, and are covered by sand-dominated poorly consolidated sediments of the Kalahari Group. Given that sand-dominated non-kimberlite lithologies are magnetically transparent, a low level, high resolution helicopter-borne magnetic gradiometer survey proved to be exceptionally effective in discriminating kimberlite targets, even for low-amplitude anomalies (e.g. 1-2 nT). The helicopter magnetic data outlined approximately 244 probable kimberlite targets and drilling of 103 targets confirmed 80 new kimberlites greater than 5 ha in area. Most kimberlites take the form of well-preserved crater edifices containing a full range of crater-related kimberlite lithologies. Ground gravity and electromagnetic surveys were conducted over all kimberlites prioritized for follow-up investigation. Geophysical responses were ground-truthed against magnetic susceptibility and density measurements, which were routinely collected on all drill cores. The geophysical signatures resolved by the three independent geophysical methods were surprisingly variable and are inferred to be sourced primarily in the crater facies materials, which demonstrate characteristically variable lithologies. Geophysical interpretations guided the drill targeting at all stages of the program at Alto Cuilo, from exploration to evaluation. Combined with geochemical and mineralogical prioritization techniques, the geophysical signatures in magnetic, gravity and electromagnetic data provide a sound basis to guide exploratory, delineation and mini bulk sample drilling of kimberlites buried under 10-70 m of overburden. The significant variability in the geophysical responses from kimberlites that are similar in size, structure and geometry highlights the importance of applying all three independent geophysical methods in order to effectively achieve kimberlite exploration and evaluation goals. The effectiveness of a multidisciplinary approach to kimberlite evaluation is demonstrated in the rapid assessment of a cluster of large kimberlites discovered at Project Alto Cuilo.

Pettit, Wayne

2009-11-01

44

La gestion de las aguas subterraneas en el acuifero Mancha Occidental  

Microsoft Academic Search

RESUMEN: En este art�culo se aborda la problem�tica que plantea la recuperaci�n del acu�fero Mancha Occidental en el que existe una importante externalidad ambiental que se deriva de la relaci�n entre las reservas de agua existentes en el acu�fero y los humedales Tablas de Daimiel. Para ello, se desarrollan varios modelos de programaci�n matem�tica que permiten evaluar distintos instrumentos de

Eva Iglesias

2002-01-01

45

Estado nutricional de crianças índias do Alto Xingu em 1980 e 1992 e evolução pondero-estatural entre o primeiro e o quarto anos de vida  

Microsoft Academic Search

This study focused on the under-five population of the Alto Xingu region in Brazil, with the following objectives: (1) to evaluate height and weight increment from the first through the fourth years of life and (2) to compare nutritional status in 1980 and 1992. Height and weight increases were evaluated in 81 children. Weight and height were measured in 264

Mauro Batista de Morais; Ulysses Fagundes Neto; Ângela Peixoto de Mattos; Roberto Geraldo Baruzzi

2003-01-01

46

DETERMINANTES DE COMPETITIVIDADE DA AGROINDÚSTRIA PROCESSADORA DE CANA-DE-AÇÚCAR NO TRIÂNGULO MINEIRO E NO ALTO PARANAÃBA , MINAS GERAIS  

Microsoft Academic Search

From the 1990s on, the sugar alcohol agro industry has been undergoing an intense process of merging and acquisition. The regions of Triângulo Mineiro and Alto Paranaíba - Minas Gerais have received significant investment directed to sugar- alcohol activities. This work aimed to analyze the major determinants in the sugar alcohol agro industry competitivity in the regions of Triângulo Mineiro

Paulo Henrique de Lima Siqueira; Bricio dos Santos Reis

2006-01-01

47

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

Microsoft Academic Search

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

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

48

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

49

Advanced interpretation of ground motion using Persistent Scatterer Interferometry technique: the Alto Guadalentín Basin (Spain) case of study  

NASA Astrophysics Data System (ADS)

Subsidence related to fluid withdrawal has occurred in numerous regions of the world. The phenomena is an important hazard closely related to the development of urban areas. The analysis of the deformations requires an extensive and continuous spatial and temporal monitoring to prevent the negative effects of such risks on structures and infrastructures. Deformation measurements are fundamental in order to identify the affected area extension, to evaluate the temporal evolution of deformation velocities and to identify the main control mechanisms. Differential SAR interferometry represents an advanced remote sensing tool, which can map displacements at very high spatial resolution. The Persistent Scatterer Interferometry (PSI) technique is a class of SAR interferometry that uses point-wise radar targets (PS) on the ground whose phase is not interested by temporal and geometrical decorrelation. This technique generates starting from a set of images two main products: the displacement rate along line of sight (LOS) of single PS; and the LOS displacement time series of individual PS. In this work SAR data with different spatio-temporal resolution were used to study the displacements that occur from 1992 to 2012 in the Alto Guadalentin Basin (southern Spain), where is located the city of Lorca The area is affected by the highest rate of subsidence measured in Europe (>10 cm/yr-1) related to long-term exploitation of the aquifer (González et al. 2011). The objectives of the work were 1) to analyse land subsidence evolution over a 20-year period with PSI technique; 2) to compare the spatial and temporal resolution of SAR data acquired by different sensors, 3) to investigate the causes that could explain this land motion. The SAR data have been obtained with ERS-1/2 & ENVISAT (1992-2007), ALOS PALSAR (2007-2010) and COSMO-SkyMed (2011-2012) images, processed with the Stable Point Network (SPN) technique. The PSI data obtained from different satellite from 1992 to 2012 were compared with some predisposing and trigger factors as geological units, isobaths of Plio-Quaternary filling, soft soil thickness and piezometric level. The PSI data were compared with measurement obtained by two GPS station located near the Lorca city: the value of deformation detected by satellites and ground-based tools are well correlated. The results are the following: a) the subsidence processes are related to soft soil thickness distribution; b) land subsidence rates shows that the area interested by the higher value is the same over the monitored period, a deceleration rate of subsidence has been recorded during the period 2011- 2012; c) the deformation rates are not correlated with the piezometric level trend, a delay time between piezometric level variations and ground deformations is evident. References González, P. J. & Fernández, J.,(2011) Drought-driven transient aquifer compaction imaged using multitemporal satellite radar interferometry. Geology 39, pp. 551-554.

Bonì, Roberta; Herrera, Gerardo; Meisina, Claudia; Notti, Davide; Zucca, Francesco; Bejar, Marta; González, Pablo; Palano, Mimmo; Tomás, Roberto; Fernandez, José; Fernández-Merodo, José; Mulas, Joaquín; Aragón, Ramón; Mora, Oscar

2014-05-01

50

Lack of identification of Flaviviruses in oral and cloacal swabs from long- and short-distance migratory birds in Trentino-Alto Adige (North-eastern Italy)  

PubMed Central

Background West Nile virus (WNV) and Usutu virus (USUV), both belonging to the genus Flavivirus, are emerging in Italy as important human and animal pathogens. Migratory birds are involved in the spread of Flaviviruses over long distances, particularly from Africa to Europe. Once introduced, these viruses can be further be dispersed by short-distance migratory and resident bird species. Thus far, there is still a considerable knowledge gap on the role played by different bird species in the ecology and transmission mechanisms of these viruses. The Region of Trentino-Alto Adige (north-eastern Italy) is located on the migratory route of many of the short- and long-distance migratory birds that cross the Alps, connecting northern Europe and western Asia with southern Europe and Africa. Until now, only a silent circulation of WNV and USUV within the territory of the Province of Trento has been confirmed by serological screening, whilst no cases of infected humans or animals have so far been reported. However, continuous spillover events of both viruses have been reported in neighbouring Regions. The aim of this study was to monitor the circulation of WNV and USUV in Trentino-Alto Adige, in order to detect if active virus shedding occurs in migratory birds captured during their seasonal movements and to evaluate the role that different bird species could play in the spreading of these viruses. Methods We carried out a biomolecular survey on oral and cloacal swabs collected from migratory birds during seasonal migrations. Birds belonging to 18 transaharian and 21 intrapaleartic species were examined during spring (n?=?176) and autumn (n?=?146), and were tested using a generic nested-PCR. Results All samples tested negative for Flaviviruses. The possible causes of unapparent shedding, along with ecological and epidemiological implications are discussed. Conclusions The lack of detection of active virus shedding in these bird species does not exclude the circulation of these viruses within the Trentino-Alto Adige region, as reported in previous studies. The possible ecological implications are discussed.

2013-01-01

51

Water and Energy Savings using Demand Hot Water Recirculating Systems in Residential Homes: A Case Study of Five Homes in Palo Alto, California  

SciTech Connect

This report summarizes a preliminary study aimed at estimating the potential of saving potable water, (and the electrical energy used to heat it), that is presently lost directly to the drain while occupants wait for hot water to arrive at the faucet (point of use). Data were collected from five single-family homes in Palo Alto, California. Despite the small sample size in this study, the results make a compelling case for retrofitting homes with hot water recirculation systems to eliminate unnecessary wastage of water at the point of use. Technical as well as behavioral and attitudinal changes towards water conservation are necessary for a fulfilling and successful conservation effort. This report focuses on the technical issues, but behavioral issues are also noted, which may be factored into future studies involving local and state governments and utility companies.

Ally, M.R.

2002-11-14

52

An investigation of ground-water recharge by injection in the Palo Alto Baylands, California : hydraulic and chemical interactions; final report  

USGS Publications Warehouse

The U.S. Geological Survey, in cooperation with the Santa Clara Valley Water District, has completed a study of ground-water recharge by injection in the Palo Alto baylands along San Francisco Bay, California. Selected wells within the Water District 's injection-extraction network were monitored to determine hydraulic and chemical interactions affecting well-field operation. The well field was installed to prevent and eliminate saline contamination in the local shallow aquifer system. The primary focus of this study is on factors that affect injection efficiency, specifically well and aquifer clogging. Mixing and break-through curves for major chemical constituents indicate ion exchange, adsorption, and dissolution reactions. Freshwater breakthrough was detected in water-level data, which reflected fluid-density change as well as head buildup. Dissolution of calcium carbonate caused by dilution of saline ground water probably accounts for an apparent increase in specific capacity possibly related to improved aquifer permeability. Adsorption evidently removed trace elements during passage of injected water through the aquifer. In terms of hydraulic and chemical compatibility, the well field is a viable system for ground-water recharge. Aquifer heterogeneity and operational constraints reduce the efficiency of the system. Efficiency may be maximized by careful attention to extraction distribution and quantity and to injection distribution, quantity, and water quality. (USGS)

Hamlin, S. N.

1985-01-01

53

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.

54

South San Francisco Bay tidal marsh vegetation and elevation surveys-Corkscrew Marsh, Bird Island, and Palo Alto Baylands, California, 1983  

USGS Publications Warehouse

Changes in the topography and ecology of the San Francisco Bay Estuary ('Estuary') during the past 200 years have resulted in the loss of nearly 80 percent of the historical salt marsh in the region. Currently, numerous projects are being undertaken by federal, state, and local governments in an attempt to restore wetland habitat and ecosystem function at a number of locations within the Estuary. Much information is needed concerning the historical topographic and ecologic characteristics of the Estuary to facilitate these restoration efforts. This report presents previously unpublished vegetation and elevation data collected in 1983 by the California State Lands Commission at Corkscrew marsh, Bird Island, and Palo Alto Baylands, all located in South San Francisco Bay. These precise and detailed elevation and plant surveys represent a snapshot of South Bay flora before invasion by the Atlantic smooth cordgrass, Spartina alterniflora. Such precise elevation data are rare for relatively undisturbed marshes in the San Francisco Bay; publication of these historical data may facilitate wetland restoration efforts. Marsh-surface and tidal-channel elevations were determined at a total of 962 stations by differential leveling to established tidal benchmark stations at each site and referenced to Mean Lower Low Water (MLLW) relative to the National Tidal Datum Epoch (1960-78). In addition, presence or absence of nine salt marsh species, percentage plant cover, and percentage bare soil were recorded for 1-square meter quadrats at 648 stations where elevations were determined. Collectively, over the three sites, salt marsh vegetation ranged in elevation from 0.98 to 2.94 m above MLLW. S. foliosa and Salicornia virginica were the most frequently observed plant species. Atriplex patula, Deschampsia cespitosa, and Limonium californicum were each recorded at only one of the three sites.

Orlando, James L.; Drexler, Judy Z.; Dedrick, Kent G.

2005-01-01

55

Relationship between spatial variations in active creep and large magnitude hanging wall earthquakes associated with the Alto Tiberina low angle normal fault, central Italy.  

NASA Astrophysics Data System (ADS)

The Alto Tiberina fault (ATF) in central Italy is a rare instance of a low angle normal fault that appears to be actively creeping at shallow to mid-crustal depths. While conventional Anderson earthquake mechanics dictate that these faults should lock up under extension, recent studies using GPS velocity data and simple fault models suggest that the ATF accommodates slip by aseismic creep below ~4 km depth in the latitude range of 43.2 N to 43.5 N. This creeping section of the ATF is well imaged and there are no instrumentally recorded large magnitude earthquakes in the hanging wall. There is no evidence for active fault creep north and south of the creeping section where large hanging wall earthquakes have occurred. We use geodetically determined images of fault creep and earthquake focal mechanisms data to explore the stress transfer relationships between the creeping section of the ATF and adjacent portions of the fault zone, which appear to be locked. In one interpretation, hanging wall earthquakes occur as a result of strain accumulation caused by variations in creep on the low angle normal fault. An alternative explanation is that creep on the low angle fault has been inhibited in the vicinity of the large magnitude hanging wall earthquakes. These spatial relationships notwithstanding, the resolution of the imaged pattern of creep is relatively low. A borehole strainmeter network would provide unprecedented temporal resolution of aseismic creep transients that would help to evaluate the possible relationships between hanging wall stress accumulation and stress sensitive creep. The combination of modeling and seismic/geodetic monitoring with a new borehole strainmeter array would also help to decipher the fault structure, earthquake mechanisms, and seismic risk in a populated area.

Mencin, David; Bennett, Rick; Jackson, Lily J.; Casale, Gabriele

2014-05-01

56

Signatures of continental collisions and magmatic activity in central Brazil as indicated by a magnetotelluric profile across the southern Alto Paranaiba igneous province  

NASA Astrophysics Data System (ADS)

Broadband and long-period magnetotelluric soundings were collected along a 560 km E-W profile in a region in central Brazil subjected to Neoproterozoic collision tectonics and Archean to Cretaceous magmatic events. The profile crosses the northeast part of Phanerozoic sediments and volcanics of the Parana basin, the southern extension of the Neoproterozoic metasedimentary rocks of the Brasilia belt, locally pervaded by Cretaceous alkaline magmas of the Alto Paranaiba igneous province (APIP), and Neoproterozoic sedimentary cover and Archean exposed basement of the southern Sao Francisco craton. 2D conductivity structures derived by joint inversions of the TE and TM polarization modes and a separate inversion of the tipper components show signatures of the past tectonomagmatic events that affected the area. A gravity-defined suture zone beneath the Parana basin related to the Neoproterozoic collision of the Sao Francisco and Parana blocks is detected in the models as a subvertical conductor extending from crustal to upper mantle depths. Deep underthrusting of organic graphite-bearing metasediments in the suture zone is proposed to explain the increase of electrical conductivity. A similar conductivity signature beneath the sedimentary covered region of the Sao Francisco craton is interpreted as another suture zone. This previously undetected feature can be associated either with a trace of a much older event preserved in the cratonic rocks or an expression of accretionary events generating the larger Neoproterozoic San Franciscan plate. Isolated high-conductivity anomalies at midcrustal depths below the Parana and APIP provinces are interpreted as residues of the emplacement of Cretaceous mafic-ultramafic volcanics. A low resistivity wedge into the lithosphere is highlighted at the topmost upper mantle beneath the APIP volcanic complex, coincidental with a zone of low velocity defined by seismic tomography. Geochemical evidences indicate that the alkaline magmatism stemmed from a metasomatized upper mantle at only slightly raised temperatures. Although related to the same magmatic process, the seismic and conductivity anomalies are presently centered at different depths and probably triggered by different sources. Interconnected carbon at the topmost mantle is the most likely candidate to explain the high conductivity whereas the low seismic velocity can be related to either compositional or temperature variations. Conductivity anomalies at different depths in the southern segment of the Sao Francisco cratonic lithosphere suggest that it was significantly affected by the several magmatic episodes it has experienced throughout its geological history. Enhanced conductivity at lower crust can be genetically related to massive basaltic intrusions whereas upper mantle high conductivity can be related to refertilization by infiltrations of low degree basaltic melts from deeper-sourced metasomatic processes.

Padilha, Antonio; Bologna, Mauricio; Vitorello, Icaro; Padua, Marcelo

2010-05-01

57

Active tectonic extension across the Alto Tiberina normal fault system from GPS data modeling and InSAR velocity maps: new perspectives within TABOO Near Fault Observatory  

NASA Astrophysics Data System (ADS)

The Alto Tiberina fault (ATF) is a low-angle (east-dipping at 15°) normal fault (LANF) 70 km long placed in the Umbria-Marche Apennines (central Italy), characterized by SW-NE oriented extension occurring at rates of 2-3 mm/yr. These rates were measured by continuous GPS stations belonging to several networks, which are denser in the study area thanks to additional sites recently installed in the framework of the INGV national RING network and of the ATF observatory. In this area historical and instrumental earthquakes mainly occur on west-dipping high-angle normal faults. Within this context the ATF has accumulated 2 km of displacement over the past 2 Ma, but at the same time the deformation processes active along this misoriented fault, as well as its mechanical behavior, are still unknown. We tackle this issue by solving for interseismic deformation models obtained by two different methods. At first, through the 2D and 3D finite element modeling, we define the effects of locking depth, synthetic and antithetic fault activity and lithology on the velocity gradient measured along the ATF system. Subsequently through a block modeling approach, we model the GPS velocities by considering the major fault systems as bounds of rotating blocks, while estimating the corresponding geodetic fault slip-rates and maps of heterogeneous fault coupling. Thanks to the latest imaging of the ATF deep structure obtained from seismic profiles, we improve the proposed models by modeling the fault as a complex rough surface to understand where the stress accumulations are located and the interseismic coupling changes. The preliminary results obtained show firstly that the observed extension is mainly accommodated by interseismic deformation on both the ATF and antithetic faults, highlighting the important role of this LANF inside an active tectonic contest. Secondarily, using the ATF surface "topography", we find an interesting correlation between microseismicty and creeping portions of the ATF. Future perspectives within this study is to validate these models using velocity maps and temporal series provided by Differential Interferometric SAR (DInSAR) technique applied to a datasets of ERS 1-2 and ENVISAT SAR images. These data cover a time interval spanning from 1992 to 2010 and have been acquired along both ascending and descending orbit. In addition we will deploy a network of SAR passive Corner Reflectors (CRs) in the proximity of GPS monuments in order to calibrate the results of processing a set of COSMO-SkyMed SAR data and derive velocity maps. Thus the availability of high-resolution data will contribute to understand the mechanics of the LANFs and to evaluate the seismic potential associated to these geologic structures.

Vadacca, Luigi; Anderlini, Letizia; Casarotti, Emanuele; Serpelloni, Enrico; Chiaraluce, Lauro; Polcari, Marco; Albano, Matteo; Stramondo, Salvatore

2014-05-01

58

Near field receiving water monitoring of trace metals in clams (Macoma balthica) and sediments near the Palo Alto water quality control plant in south San Francisco Bay, California : 2002  

USGS Publications Warehouse

This report presents trace element concentrations analyzed on samples of fine-grained sediments and clams (Macoma balthica) collected from a mudflat one kilometer south of the discharge of the Palo Alto Regional Water Quality Control Plant in South San Francisco Bay. This report serves as a continuation of the Near Field Receiving Water Monitoring Study, which was started in 1994. The data for 2002, herein, are interpreted within that context. Metal concentrations in both sediments and clam tissue samples have been within the range of values produced by seasonal variability. However, copper and zinc, display continued decreases. Copper in sediment was observed to drop below the ERL (Effects Range-Low) concentration for the third consecutive year and zinc concentrations never exceeded the ERL. Yearly average concentrations of copper, zinc and silver in Macoma balthica for 2002 are some of the lowest recorded since monitoring began in 1975. Mercury and selenium concentrations in sediments and clams at Palo Alto were similar concentrations observed elsewhere in the San Francisco Bay.

Moon, Edward; David, Carlos Primo C.; Luoma, Samuel N.; Cain, Daniel J.; Hornberger, Michelle I.; Lavigne, Irene R.

2003-01-01

59

Near field receiving water monitoring of trace metals in clams (macoma balthica) and sediments near the Palo Alto Water Quality Control Plant in South San Francisco Bay, California: 2000  

USGS Publications Warehouse

Trace element concentrations were analyzed on samples of fine-grained sediments and clams (Macoma balthica) collected from a mudflat one kilometer south of the discharge of the Palo Alto Regional Water Quality Control Plant in South San Francisco Bay. This report serves as a continuation of the Near Field Receiving Water Monitoring Study, which was started in 1994. The data for 2003, herein, are interpreted within that context. Metal concentrations in both sediments and clam tissue samples have been within the range of values produced by seasonal variability; however, copper and zinc, display continued decreases over the last decade. In 2003, copper in sediment was observed to drop below the ERL (Effects Range-Low) concentration for the third consecutive year and zinc concentrations never exceeded the ERL. Yearly average concentrations of copper, zinc and silver in Macoma balthica for 2003 are some of the lowest recorded since monitoring began in 1975. Mercury and selenium concentrations in sediments and clams at Palo Alto were similar to concentrations observed elsewhere in the San Francisco Bay.

Moon, Edward; Luoma, Samuel N.; Cain, Daniel J.; Hornberger, Michelle I.; David, Carlos Primo C.

2004-01-01

60

Near-field receiving water monitoring of trace metals and a benthic community near the Palo Alto Regional Water Quality Control Plant in south San Francisco Bay, California, 2012  

USGS Publications Warehouse

Trace-metal concentrations in sediment and in the clam Macoma petalum (formerly reported as Macoma balthica), clam reproductive activity, and benthic macroinvertebrate community structure were investigated in a mudflat 1 kilometer south of the discharge of the Palo Alto Regional Water Quality Control Plant (PARWQCP) in South San Francisco Bay, Calif. This report includes the data collected by U.S. Geological Survey (USGS) scientists for the period January to December 2012. These data serve as the basis for the City of Palo Alto’s Near-Field Receiving Water Monitoring Program, initiated in 1994. Following significant reductions in the late 1980s, silver (Ag) and copper (Cu) concentrations in sediment and in M. petalum appear to have stabilized. Data for other metals, including chromium (Cr), mercury (Hg), nickel (Ni), selenium (Se), and zinc (Zn), have been collected since 1994. Over this period, concentrations of these elements have remained relatively constant, aside from seasonal variation that is common to all elements. In 2012, concentrations of Ag and Cu in M. petalum varied seasonally in response to a combination of site-specific metal exposures and annual growth and reproduction, as reported for previous time periods. Seasonal patterns for other elements, including Cr, Ni, Zn, Hg, and Se were generally similar in timing and magnitude as those for Ag and Cu. In 2012, metal concentrations in both sediments and clam tissue were among the lowest concentrations on record. This record suggests that regional-scale factors now largely control sedimentary and bioavailable concentrations of Ag and Cu, as well as other elements of regulatory interest, at the Palo Alto site. Analyses of the benthic community structure of a mudflat in South San Francisco Bay over a 39-year period show that changes in the community have occurred concurrent with reduced concentrations of metals in the sediment and in the tissues of the biosentinel clam, M. petalum, from the same area. Analysis of the M. petalum community shows increases in reproductive activity concurrent with the decline in metal concentrations in the tissues of this organism. Reproductive activity is presently stable (2012), with almost all animals initiating reproduction in the fall and spawning the following spring. The community has shifted from being dominated by several opportunistic species to a community where the species are more similar in abundance, a pattern that indicates a more stable community that is subjected to fewer stressors. In addition, two of the opportunistic species (Ampelisca abdita and Streblospio benedicti) that brood their young and live on the surface of the sediment in tubes have shown a continual decline in dominance coincident with the decline in metals; both species had short-lived rebounds in abundance in 2008, 2009, and 2010. Heteromastus filiformis (a subsurface polychaete worm that lives in the sediment, consumes sediment and organic particles residing in the sediment, and reproduces by laying its eggs on or in the sediment) showed a concurrent increase in dominance and, in the last several years before 2008, showed a stable population. H. filiformis abundance increased slightly in 2011–2012. An unidentified disturbance occurred on the mudflat in early 2008 that resulted in the loss of the benthic animals, except for those deep-dwelling animals like Macoma petalum. Animals immediately returned to the mudflat in 2008, which was the first indication that the disturbance was not due to a persistent toxin or to anoxia. The reproductive mode of most species present in 2012 is reflective of the species that were available either as pelagic larvae or as mobile adults. Although oviparous species were lower in number in this group, the authors hypothesize that these species will return slowly as more species move back into the area. The use of functional ecology was highlighted in the 2012 benthic community data, which show that the animals that have now returned to the mudflat are those that can respond successfully to a physical, nontoxic dist

Dyke, Jessica L.; Thompson, Janet K.; Cain, Daniel J.; Kleckner, Amy E.; Parchaso, Francis; Luoma, Samuel N.; Hornberger, Michelle I.

2013-01-01

61

Near-field receiving water monitoring of trace metals and a benthic community near the Palo Alto Regional Water Quality Control Plant in south San Francisco Bay, California: 2011  

USGS Publications Warehouse

Trace-metal concentrations in sediment and in the clam Macoma petalum (formerly reported as Macoma balthica), clam reproductive activity, and benthic macroinvertebrate community structure were investigated in a mudflat 1 kilometer south of the discharge of the Palo Alto Regional Water Quality Control Plant (PARWQCP) in South San Francisco Bay, Calif. This report includes the data collected by U.S. Geological Survey (USGS) scientists for the period January 2011 to December 2011. These data serve as the basis for the City of Palo Alto's Near-Field Receiving Water Monitoring Program, initiated in 1994. Following significant reductions in the late 1980s, silver (Ag) and copper (Cu) concentrations in sediment and M. petalum appear to have stabilized. Data for other metals, including chromium, mercury, nickel, selenium, and zinc, have been collected since 1994. Over this period, concentrations of these elements have remained relatively constant, aside from seasonal variation that is common to all elements. In 2011, concentrations of Ag and Cu in M. petalum varied seasonally in response to a combination of site-specific metal exposures and annual growth and reproduction, as reported previously. Seasonal patterns for other elements, including Cr, Hg, Ni, Se, and Zn, were generally similar in timing and magnitude as those for Ag and Cu. In 2011, metal concentrations in both sediments and clam tissue were among the lowest concentrations on record. This record suggests that regional-scale factors now largely control sedimentary and bioavailable concentrations of Ag and Cu, as well as other elements of regulatory interest, at the Palo Alto site. Analyses of the benthic community structure of a mudflat in South San Francisco Bay over a 38-year period show that changes in the community have occurred concurrent with reduced concentrations of metals in the sediment and in the tissues of the biosentinel clam, M. petalum, from the same area. Analysis of the M. petalum community shows increases in reproductive activity concurrent with the decline in metal concentrations in the tissues of this organism. Reproductive activity is presently stable (2011), with almost all animals initiating reproduction in the fall and spawning the following spring. The community has shifted from being dominated by several opportunistic species to a community where the species are more similar in abundance, a pattern that indicates a more stable community that is subjected to fewer stressors. In addition, two of the opportunistic species (Ampelisca abdita and Streblospio benedicti) that brood their young and live on the surface of the sediment in tubes have shown a continual decline in dominance coincident with the decline in metals; both species had short-lived rebounds in abundance in 2008, 2009, and 2010. Heteromastus filiformis (a subsurface polychaete worm that lives in the sediment, consumes sediment and organic particles residing in the sediment, and reproduces by laying its eggs on or in the sediment) showed a concurrent increase in dominance and, in the last several years before 2008, showed a stable population. H. filiformis abundance increased slightly in 2011. An unidentified disturbance occurred on the mudflat in early 2008 that resulted in the loss of the benthic animals, except for those deep-dwelling animals like Macoma petalum. Animals immediately returned to the mudflat in 2008, which was the first indication that the disturbance was not due to a persistent toxin or to anoxia. The reproductive mode of most species present in 2011 is reflective of the species that were available either as pelagic larvae or as mobile adults. Although egg layers were lower in number in this group, the authors hypothesize that these species will return slowly as more species move back into the area. The use of functional ecology was highlighted in the 2011 benthic community data, which show that the animals that have now returned to the mudflat are those that can respond successfully to a physical, nontoxic disturbance. Today, community data show a mix of animals

Dyke, Jessica L.; Thompson, Janet K.; Cain, Daniel J.; Kleckner, Amy E.; Parchaso, Francis; Luoma, Samuel N.; Hornberger, Michelle I.

2012-01-01

62

Near field receiving water monitoring of trace metals in clams (macoma balthica) and sediments near the Palo Alto Water Quality Control Plant in South San Francisco Bay, California: 1999-2001  

USGS Publications Warehouse

This report presents trace element concentrations analyzed on samples of fine-grained sediments and clams (Macoma balthica) collected from a mudflat one kilometer south of the discharge of the Palo Alto Regional Water Quality Control Plant in South San Francisco Bay. This report serves as a continuation of the Near Field Receiving Water Monitoring Study which was started in 1994. The data for 1999-2001 are interpreted within that context. Generally, metal concentrations in both sediments and clam tissue samples have been within the range of values produced by seasonal variability. Copper and zinc, however, display a continued decrease, recording the lowest winter maxima concentrations in both sediment and tissue samples in 2001. Yearly average of bioavailable copper, zinc and silver concentrations in 1999-2001 are some of the lowest recorded since monitoring began in 1975. A slight increase in mercury in sediments and selenium in tissue in early 2001 are also observed. These enrichments are believed to be mainly caused by hydrogeologic processes affecting the area although only continued sampling will confirm whether anthropogenic sources influence the concentrations of these elements.

David, Carlos Primo C.; Luoma, Samuel N.; Brown, Cynthia L.; Cain, Daniel J.; Hornberger, Michelle I.; Lavigne, Irene R.

2002-01-01

63

Near-field receiving water monitoring of trace metals and a benthic community near the Palo Alto Regional Water Quality Control Plant in south San Francisco Bay, California; 2009  

USGS Publications Warehouse

Results reported herein include trace element concentrations in sediment and in the clam Macoma petalum (formerly reported as Macoma balthica (Cohen and Carlton, 1995)), clam reproductive activity, and benthic macroinvertebrate community structure for a mudflat one kilometer south of the discharge of the Palo Alto Regional Water Quality Control Plant (PARWQCP) in South San Francisco Bay. This report includes data collected for the period January 2009 to December 2009 and extends a critical long-term biogeochemical record dating back to 1974. These data serve as the basis for the City of Palo Alto's Near-Field Receiving Water Monitoring Program, initiated in 1994. In 2009, metal concentrations in both sediments and clam tissue were among the lowest concentrations on record and consistent with results observed since 1991. Following significant reductions in the late 1980s, silver (Ag) and copper (Cu) concentrations appeared to have stabilized. Annual mean concentrations have fluctuated modestly (2-4 fold) in a nondirectional manner. Data for other metals, including chromium, mercury, nickel, selenium, vanadium, and zinc, have been collected since 1994. Over this period, concentrations of these elements, which more likely reflect regional inputs and systemwide processes, have remained relatively constant, aside from typical seasonal variation that is common to all elements. Within years, the winter months (January-March) generally exhibit maximum concentrations, with a decline to annual minima in spring through fall. Mercury (Hg) in sediments and M. petalum were comparable to concentrations observed in 2008 and were generally consistent with data from previous years. Selenium (Se) concentrations in sediment varied among years and showed no sustained temporal trend. In 2009, sedimentary Se concentrations declined from the record high concentrations observed in 2008 to concentrations that were among the lowest on record. Selenium in M. petalum was unchanged from 2008. Overall, Cu and Ag concentrations in sediments and soft tissues of the clam, M. petalum, remained representative of the concentrations observed since 1991 following significant reductions in the discharge of these elements from the PARWQCP. This suggests that, as with other elements of regulatory interest, regional-scale factors now largely influence sedimentary and bioavailable concentrations of Ag and Cu. Analyses of the benthic community structure of a mudflat in South San Francisco Bay over a 36-year period show that changes in the community have occurred concurrent with reduced concentrations of metals in the sediment and in the tissues of the biosentinel clam, M. petalum, from the same area. Analysis of the reproductive activity of M. petalum shows increases in reproductive activity concurrent with the decline in metal concentrations in the tissues of this organism. Reproductive activity is presently stable, with almost all animals initiating reproduction in the fall and spawning the following spring of most years. The community has shifted from being dominated by several opportunistic species to a community where the species are more similar in abundance, a pattern that suggests a more stable community that is subjected to fewer stressors. In addition, two of the opportunistic species (Ampelisca abdita and Streblospio benedicti) that brood their young and live on the surface of the sediment in tubes have shown a continual decline in dominance coincident with the decline in metals; both species had short-lived rebounds in abundance in 2008 and 2009. Heteromastus filiformis (a subsurface polychaete worm that lives in the sediment, consumes sediment and organic particles residing in the sediment, and reproduces by laying its eggs on or in the sediment) showed a concurrent increase in dominance, with the last several years prior to 2008 showing a stable population. An unidentified disturbance occurred on the mudflat in early 2008 that resulted in the loss o

Dyke, Jessica L.; Parchaso, Janet K.; Thompson, Janet K.; Cain, Daniel J.; Luoma, Samuel N.; Hornberger, Michelle I.

2010-01-01

64

Near-Field Receiving Water Monitoring of Trace Metals and a Benthic Community Near the Palo Alto Regional Water Quality Control Plant in South San Francisco Bay, California: 2008  

USGS Publications Warehouse

Results reported herein include trace element concentrations in sediment and in the clam Macoma petalum (formerly reported as Macoma balthica (Cohen and Carlton, 1995)), clam reproductive activity, and benthic macroinvertebrate community structure for a mudflat one kilometer south of the discharge of the Palo Alto Regional Water Quality Control Plant (PARWQCP) in South San Francisco Bay. This report includes data collected for the period January 2008 to December 2008 and extends a critical long-term biogeochemical record dating back to 1974. These data serve as the basis for the City of Palo Alto's Near-Field Receiving Water Monitoring Program, initiated in 1994. In 2008, metal concentrations in both sediments and clam tissue were among the lowest concentrations on record and consistent with results observed since 1991. Following significant reductions in the late 1980's, silver (Ag) and copper (Cu) concentrations appeared to have stabilized. Annual mean concentrations have fluctuated modestly (2-4 fold) in a nondirectional manner. Data for other metals, including chromium, mercury, nickel, selenium, vanadium, and zinc, have been collected since 1994. Over this period, concentrations of these elements, which more likely reflect regional inputs and systemwide processes, have remained relatively constant, aside from typical seasonal variation that is common to all elements. Within years, concentrations generally reach maximum in winter months (January-March) and decline to annual minima in spring through fall. Mercury (Hg) in sediments spiked to the highest observed level in January 2008. However, sedimentary concentrations for the rest of the year and concentrations of Hg in M. petalum for the entire year were consistent with data from previous years. Average selenium (Se) concentrations in sediment were the highest on record, but there is no evidence, yet, to suggest a temporal trend of increasing sedimentary Se. Selenium in M. petalum was not elevated relative to past years. Overall, Cu and Ag concentrations in sediments and soft tissues of the clam, M. petalum, remained representative of the concentrations observed since 1991 following significant reductions in the discharge of these elements from PARWQCP, suggesting that, similar to other elements of regulatory interest, regional scale factors now largely influence sedimentary and bioavailable concentrations of Cu and Ag. Analyses of the benthic-community structure of a mudflat in South San Francisco Bay over a 31-year period show that changes in the community have occurred concurrent with reduced concentrations of metals in the sediment and in the tissues of the biosentinel clam, M. petalum, from the same area. Analysis of the reproductive activity of M. petalum shows increases in reproductive activity concurrent with the decline in metal concentrations in the tissues of this organism. Reproductive activity is presently stable, with almost all animals initiating reproduction in the fall and spawning the following spring of most years. The community has shifted from being dominated by several opportunistic species to a community where the species are more similar in abundance, a pattern that suggests a more stable community that is subjected to less stress. In addition, two of the opportunistic species (Ampelisca abdita and Streblospio benedicti) that brood their young and live on the surface of the sediment in tubes, have shown a continual decline in dominance coincident with the decline in metals. Heteromastus filiformis, a subsurface polychaete worm that lives in the sediment, consumes sediment and organic particles residing in the sediment, and reproduces by laying their eggs on or in the sediment, has shown a concurrent increase in dominance and is now showing signs of population stability. An unidentified disturbance occurred on the mudflat in early 2008 that resulted in the loss of the benthic animals, except for those deep dwelling animals like Macoma petalum.

Cain, Daniel J.; Thompson, Janet K.; Dyke, Jessica L.; Parchaso, Francis; Luoma, Samuel N.; Hornberger, Michelle I.

2009-01-01

65

Detection of Rickettsia parkeri from within Piura, Peru, and the First Reported Presence of Candidatus Rickettsia andeanae in the Tick Rhipicephalus sanguineus  

PubMed Central

Abstract Domestic farm animals (n=145) were sampled for the presence of ectoparasites in northwestern Peru during March, 2008. Ninety domestic animals (62%) were positive for the presence of an ectoparasite(s) and produced a total collection of the following: 728 ticks [Amblyomma maculatum, Anocentor nitens, Rhipicephalus (Boophilus) microplus, Rhipicephalus sanguineus, and Otobius megnini], 12 lice (Haematopinus suis), and 3 fleas (Ctenocephalides felis). A Rickettsia genus-specific qPCR assay was performed on nucleic acid preparations of the collected ectoparasites that resulted in 5% (37/743, 35 ticks and 2 fleas) of the ectoparasites positive for the presence of Rickettsia. DNA from the positive individual ticks was tested with 2 other qPCR assays for the presence of the ompB gene in Candidatus Rickettsia andeanae or Rickettsia parkeri. Candidatus R. andeanae was found in 25 A. maculatum ticks and in two Rh. sanguineus ticks, whereas R. parkeri was detected in 6 A. maculatum ticks. Two A. maculatum were co-infected with both Candidatus R. andeanae and R. parkeri. Rickettsia felis was detected in 2 fleas, Ctenocephalides felis, by multilocus sequence typing of the 17-kD antigen and ompA genes. These findings expand the geographic range of R. parkeri to include Peru as well as expand the natural arthropod vector of Candidatus R. andeanae to include Rhipicephalus sanguineus.

Flores-Mendoza, Carmen; Florin, David; Felices, Vidal; Pozo, Edwar J.; Graf, Paul C.F.; Richards, Allen L.

2013-01-01

66

Community Based Outpatient Clinic Reviews at VA Palo Alto Health Care System, Palo Alto, CA.  

National Technical Information Service (NTIS)

We evaluated select activities to assess whether the CBOCs operated in a manner that provides veterans with consistent, safe, high-quality health care. For the EHR review component of the WH and vaccinations topic areas, patients were randomly selected fr...

2013-01-01

67

Soldadura laser remota de aceros de alto limite elastico  

Microsoft Academic Search

This paper presents a weldability study of Usibor 1500 P high strength steel pre-coated of Al-Si in the non quenched state by remote laser welding. The pollution of the melt pool by Al-Fe intermetallic particles during laser welding results in low strength joints.

M. Blasco; D. Iordachescu; J. L. Ocafia

68

Fetal and postnatal pulmonary circulation in the Alto Andino.  

PubMed

Lowland mammals at high altitude constrict the pulmonary vessels, augmenting vascular resistance and developing pulmonary arterial hypertension. In contrast, highland mammals, like the llama, do not present pulmonary arterial hypertension. Using wire myography, we studied the sensitivity to norepinephrine (NE) and NO of small pulmonary arteries of fetal llamas and sheep at high altitudes. The sensitivity of the contractile responses to NE was decreased whereas the relaxation sensitivity to NO was augmented in the llama fetus compared to the sheep fetus. Altogether these data show that the fetal llama has a lower sensitivity to a vasoconstrictor (NE) and a higher sensitivity to a vasodilator (NO), than the fetal sheep, consistent with a lower pulmonary arterial pressure found in the neonatal llama in the Andean altiplano. Additionally, we investigated carbon monoxide (CO) in the pulmonary circulation in lowland and highland newborn sheep and llamas. Pulmonary arterial pressure was augmented in neonatal sheep but not in llamas. These sheep had reduced soluble guanylate cyclase and heme oxygenase expression and CO production than at lowland. In contrast, neonatal llamas increased markedly pulmonary CO production and HO expression at high altitude. Thus, enhanced pulmonary CO protects against pulmonary hypertension in the highland neonate. Further, we compared pulmonary vascular responses to acute hypoxia in the adult llama versus the adult sheep. The rise in pulmonary arterial pressure was more marked in the sheep than in the llama. The llama pulmonary dilator strategy may provide insights into new treatments for pulmonary arterial hypertension of the neonate and adult. PMID:21295346

Llanos, A J; Ebensperger, G; Herrera, E A; Reyes, R V; Pulgar, V M; Serón-Ferré, M; Díaz, M; Parer, J T; Giussani, D A; Moraga, F A; Riquelme, R A

2011-03-01

69

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

70

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

71

V/STOL Conference, Palo Alto, Calif., June 6-8, 1977, Technical Papers  

NASA Technical Reports Server (NTRS)

Papers are presented on practical aspects of commercial STOL operations, a Vertical Attitude Takeoff and Landing (VATOL) program, powered-lift STOL ground effects, conceptual design studies of Navy Type A V/STOL aircraft, and a V/STOL shaft propulsion system analytical performance model. Also considered are the management of swirling flows with application to wind tunnel design and V/STOL testing, flight control testing of the VAK-191B, and surface fluctuating pressure measurements on a 1/4-scale YC-14 boilerplate model.

1977-01-01

72

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

73

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

74

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

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

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

77

Biodiversity of Archaea and floral of two inland saltern ecosystems in the Alto Vinalopó Valley, Spain  

Microsoft Academic Search

BACKGROUND: The extraction of salt from seawater by means of coastal solar salterns is a very well-described process. Moreover, the characterization of these environments from ecological, biochemical and microbiological perspectives has become a key focus for many research groups all over the world over the last 20 years. In countries such as Spain, there are several examples of coastal solar

Basilio Zafrilla; Rosa M Martínez-Espinosa; María A Alonso; María J Bonete

2010-01-01

78

GERBERTVS una nuova rivista per l'astronomia e la scienza nell'alto medioevo  

NASA Astrophysics Data System (ADS)

GERBERTVS appears as an international e-journal on medieval science, namely astronomy. It has been created to gather all the studia promoted on Gerbert of Aurillac, the most prominent figure of the tenth century: astronomer, organ builder and music theoretician, mathematician, philosopher, and finally pope with the name of Silvester II (999-1003). Here is presented the first volume (2010) published in the institutional web site www.icra.it/gerbertus with the ISSN 2038-355X.

Sigismondi, C.

79

El somatotipo de la voleibolista cubana de alto nivel de actuación: período 1992-2000  

Microsoft Academic Search

The specific aim of this study was twofold: first to establish reference data for team and game roles somatotype in Cuban female volleybal players, and to compare the characteristics among game roles. Forty three athletes were measured according to the Heath-Carter anthropometric somatotype method. The subjects had been playing volleyball for 10.9 years, on average and they were considered the

Wiliam Carvajal Veitia; Iscel Diaz Hernandez; Sofia Leon Perez; Ivis Echevarria Garcia

2009-01-01

80

Alterations following a fire in a forest community of Alto Rio Xingu  

Microsoft Academic Search

This study records the consequences of fire upon the soil and structure of the Amazonian Forest of Gaúcha do Norte, Mato Grosso state, Brazil (13°12?S and 53°20?W). For this, the number of individuals sampled in 1ha of the forest, during a phytosociological survey completed 2 days before the accidental fire, was compared with the survivors recorded afterwards in the reinventory

Natália Macedo Ivanauskas; Reinaldo Monteiro; Ricardo Ribeiro Rodrigues

2003-01-01

81

Assessment Laboratory Model Fire Captain Promotional Examination Developed for City of Palo Alto, California.  

National Technical Information Service (NTIS)

The assessment laboratory is a full-day program devoted to evaluations of the candidates during various exercises. The test involves participation by the candidates in an in-basket exercise; a leaderless group exercise; a 5-minute oral presentation; an un...

D. S. Macrae J. D. Harris

1975-01-01

82

Assessment Laboratory Model. Fire Fighter Selection Examination Developed for City of Palo Alto, California.  

ERIC Educational Resources Information Center

The assessment laboratory function is supplementary and subsequent to the usual mass testing procedures. It is designed to elicit information not furnished by older more traditional methods, e.g., assessment of personal attributes, communication skills, etc. The exam involved participation by the candidates in both individual and group exercises.…

Harris, J. David; Macrae, Donald S.

83

Assessment Laboratory Model. Firefighter Selection Examination Developed for City of Palo Alto, California.  

National Technical Information Service (NTIS)

The assessment laboratory function is supplementary and subsequent to the usual mass testing procedures. It is designed to elicit information not furnished by older, more traditional methods, e.g., assessment of personal attributes, communication skills, ...

J. D. Harris D. S. Macrae

1975-01-01

84

Assessment Laboratory Model-Fire Captain Promotional Examination Developed for City of Palo Alto, California.  

ERIC Educational Resources Information Center

The assessment laboratory is a full-day program devoted to evaluations of the candidates during various exercises. The test involves participation by the candidates in an in-basket exercise; a leaderless group exercise; a 5-minute oral presentation; an unstructured group discussion requiring solutions and consensus; and one requiring…

Harris, J. David; Macrae, Donald S.

85

First Delayed Neutron Emission Measurements at Alto with the Neutron Detector Tetra  

NASA Astrophysics Data System (ADS)

Beta decay properties are among the easiest and therefore, the first ones to be measured to study new neutron rich isotopes. Eventually it could be sufficient just a few number of nuclei to estimate its lifetime and neutron emission probability. With the new radioactive beam facilities which have been commissioned recently (or will have been constructed shortly) new areas of neutron rich isotopes are becoming reachable. To study beta decay properties of such nuclei at IPN Orsay in the frame of collaboration with JINR, Dubna a new experimental setup including the neutron detector TETRA of high efficiency was developed and commissioned.

Testov, D.; Ancelin, S.; Bettane, J.; Ibrahim, F.; Kolos, K.; Kuznetsova, E.; Mavilla, G.; Niikura, M.; Penionzhkevich, Yu.; Smirnov, V.; Sokol, E.; Verney, D.; Wilson, J.

2013-06-01

86

RESISTENCIA MECANICA Y TENACIDAD A LA FRACTURA DE FUNDICIONES DE ALTO CROMO  

Microsoft Academic Search

Resumen. Las fundiciones blancas de hierro aleadas con cromo son unos productos que se obtienen mediante métodos de moldeo, que poseen una microestructura muy dura en la que sobresale la presencia de una importante cantidad de carburos de cromo intergranulares dispersos en una matriz martensítica. Su tratamiento térmico idóneo consiste en una austenización seguida de un temple y dos tratamientos

I. Fernández Pariente; F. J. Belzunce; C. Rodriguez; J. Riba

87

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

88

The Venus environment; Proceedings of the International Conference, Palo Alto, CA, November 1-6, 1981  

NASA Technical Reports Server (NTRS)

Attention is given to noble gases in planetary atmospheres, the photochemistry of the stratosphere of Venus, the chemistry of metastable species in the Venusian ionosphere, the Venus ionosphere at grazing incidence of solar radiation, disappearing ionospheres on the nightside of Venus, and the observed composition of the ionosphere of Venus. Other investigations considered are concerned with the predicted electrical conductivity between 0 and 80 km in the Venusian atmosphere, sulfuric acid vapor and other cloud-related gases in the Venus atmosphere, the composition and vertical structure of the lower cloud deck on Venus, amorphous sulfur as the ultraviolet absorber on Venus, and polarization studies of the Venus UV contrasts. A description is provided of topics related to temporal variability of ultraviolet cloud features in the Venus stratosphere, zonal mean circulation at the cloud level on Venus, the influence of thermospheric winds on exospheric hydrogen on Venus, and an analysis of Venus gravity data.

1982-01-01

89

Lockheed Palo Alto Research Laboratory contribution to the 1973 United States report to COSPAR  

NASA Technical Reports Server (NTRS)

Research progress in particles and fields is summarized, including studies on auroral helium ions and protons, auroral electrons, and OGO-5 data analysis on magnetosphere. Upper atmospheric physics and solar and stellar astronomy are also considered.

1972-01-01

90

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

91

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

National Technical Information Service (NTIS)

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 ar...

1988-01-01

92

ANÁLISE DAS PARTÍCULAS DE SEGUNDA FASE NO AÇO INOXIDÁVEL AUSTENÍTICO DE ALTO NITROGÊNIO ISO 5832-9  

Microsoft Academic Search

This work presents a study on the analysis of the second phase particles in the austenitic stainless steel of high nitrogen specified as ISO 5832-9 used in the production of orthopedic implant. Metalographical observations through the optical and scanning electron microscopy of samples attacked electrolytic with HNO3, analysis of energy-dispersive spectroscopy, X-ray diffraction and transmission electron microscopy shows the presence

Celso Riyoitsi Sokei; Eduardo Burihan Faria; Ruis Camargo Tokimatsu; Itamar Ferreira

93

Atmospheric Flight Mechanics Conference, 2nd, Palo Alto and Moffett Field, Calif., September 11-13, 1972, Informal Papers.  

NASA Technical Reports Server (NTRS)

Limitations in the acquisition of nonlinear aerodynamic coefficients from free-oscillation data by means of the Chapman-Kirk technique, SAM-D control test vehicle trajectory plannning and flight test analysis, and determination of aerodynamic drag from radar data are among the topics covered in papers concerned with atmospheric flight mechanics. Other areas covered include fixed and rotary-wing aircraft, ordnance and reentry vehicles, and analysis and measurement techniques. Individual items are announced in this issue.

1972-01-01

94

Filtros hidráulicos PureForce TM diseñados para satisfacer o exceder los requisitos de alto rendimiento del equipo actual  

Microsoft Academic Search

El filtro hidráulico que antes no existía en los sistemas hidráulicos, ahora se ha transformado en un componente crítico. De hecho, son muy pocas las áreas de filtración que han cambiado con tanta rapidez como la hidráulica. La razón de un cambio tan rápido es que los sistemas hidráulicos están reemplazando a otros tipos de transmisiones. Para mejorar la seguridad

Medio Oriente; América del Sur

2009-01-01

95

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

96

[The Rondon Commission, diseases, and politics: "Região do Madeira: Santo Antônio," by Joaquim Augusto Tanajura - another view of the Alto Madeira in 1911].  

PubMed

Physician Joaquim Augusto Tanajura (1878-1941), head of health services for the Rondon Commission from 1909 to 1912, wrote a paper about the first scientific journeys sponsored by the Oswaldo Cruz Institute. Entitled "Região do Madeira: Santo Antônio," it was published in the newspaper Jornal do Commercio de Manáos on June 5, 1911, at a time when rediscovery of Brazil's sertões had just begun and indictments were starting to be lodged about the state of abandonment and disease in which the interior of the country lay. Through Doctor Tanajura's article, the present text analyzes both the engagement of members of the Rondon Commission in local political dynamics and the era's controversies about construction of the image of the sertão and its inhabitants. PMID:21779698

Vital, André Vasques

2011-06-01

97

Implications of agricultural land use for sustainability of gravity fed water distribution systems relying on natural springs in the Alto Beni Region of Bolivia  

Microsoft Academic Search

Gravity-fed distribution systems from natural springs are frequently used as a method for providing drinking water to developing communities throughout the world. They are seen as an appropriate technology for their relatively simple operation and maintenance requirements. Spring discharge, however, depends on recharge rates in the spring's catchment area, and the storage and distribution system must be designed with this

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

2009-01-01

98

ASPECTOS FÍSICO-QUÍMICOS DE DOIS RIOS DA BACIA DO ALTO TAPAJÓS - TELES PIRES E CRISTALINO - MT, DURANTE PERÍODO DE ESTIAGEM E CHEIA  

Microsoft Academic Search

Teles Pires and Cristalino are two major rivers that cross Mato Grosso State. Studies in these environments are still very scarce, reflecting the need to better know these systems, so they can be preserved by maintaining its natural conditions. The present work intented to evaluate the behavior of physical and chemical variables during dry and rainy season of two rivers

CRISTIANE AKEMI UMETSU; RICARDO KEICHI UMETSU; KELLI CRISTINA APARECIDA

99

ALTERACIONES FISIOLOGICAS Y BIOQUlMICAS EN SEMILLAS DE TRES CULnvARES DE Phaseolus vulgaris DE ALTO Y BAJO VIGOR INDUCIDO 1  

Microsoft Academic Search

Physiological and biochemical alterations in low and high induced vigor bean seeds (Phaseolus vulgaris L.). Bean seeds of cultivars Rio Tibagi, Turrialba-4 and EMPASC-201 were artificially aged by storage in sealed plastic jars at 16% moisture content and 35°C. Seed samples were removed from storage at six-day intervals to obtain different vigor levels. The samples were submitted to standard germination

Ramiro Alizaga

100

Ressecção transepifisária em sarcomas ósseos de alto grau de malignidade da região do joelho * Transepiphyseal resection for high malignancy grade bone sarcomas of the knee region  

Microsoft Academic Search

Objective: The study aims to evaluate oncological, functional, and reconstructive results of patients submitted to transepiphyseal resection. Methods: From 1990 to 2001, 24 patients having metaphyseal bone sarcomas of high malignancy grade located at the distal femur (15 cases), and proximal tibia (9 cases) were assessed. All patients were submitted to transepiphyseal resection and bone grafting reconstruction. There were 13

ALEJANDRO ENZO CASSONE; OLAVO PIRES DE CAMARGO

101

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

102

Efecto del quitosán de alto peso molecular y del alginato de sodio sobre la hidrofobicidad y adhesión de Candida albicans a células  

Microsoft Academic Search

The aim of the present paper is to evaluate the effect of the high molecular weight chitosan (HMWC) and of sodium alginate (NaAL) on surface hydrophobicity of Candida albicans and on adhesion of the yeast to epithelial cells and fibroblasts of different proceeding. For this study, a collection strain and seven isolates of C. albicans from saliva (patients with denture

Ana Isabel Azcurra; Silvina Ruth Barembaum; María Alejandra Bojanich; Silvia Edith Calamari; Javier Aguilar; Luis José Battellino; Susana Tereza Dorronsoro

103

Aspectos biológicos de una nueva población del Capuchino de Cabeza Negra (Lonchura malacca, Estrildidae) en el alto valle del Magdalena, Tolima  

Microsoft Academic Search

We report the establishment of a population of Lonchura malacca in the upper Magdalena valley in the municipalities of Ibague, Piedras and San Luis (Tolima). In this study we documented size of groups, distribution, habitat, behaviour, diet, reproductive activity and morphometric data. L. malacca frequents grasslands, agricultural fields, including rice paddies (Oryza sativa) and riverside forests in Tropical Dry Forest

Diego Carantón-Ayala; Carolina Díaz-Jaramillo; Ronald Mauricio Parra; Jeyson Sanabria-Mejía; Miguel Moreno-Palacios

104

Near-field receiving water monitoring of a benthic community near the Palo Alto Water Quality Control Plant in south San Francisco Bay: February 1974 through December 2003  

USGS Publications Warehouse

Analyses of the benthic community structure of a mudflat in South San Francisco Bay over a 29-year period show that changes in the community have occurred concurrent with reduced concentrations of metals in the sediment and in the tissues of the biosentinal clam Macoma balthica from the same area. The community has shifted from being dominated by several opportunistic species to a community where the species are more similar in abundance, a pattern that could be indicative of a more stable community that is subjected to less stress. In addition, two of the opportunistic species (Ampelisca abdita and Streblospio benedicti) that brood their young and live on the surface of the sediment in tubes have shown a continual decline in dominance coincident with the decline in metals. Heteromastus filiformis, a subsurface polychaete worm that lives in the sediment, consumes sediment and organic particles residing in the sediment, and reproduces by laying their eggs on or in the sediment has shown a concurrent increase in dominance. These changes in species dominance reflect a change in the community from one dominated by surface dwelling, brooding species to one with species with varying life history characteristics. Analysis of the reproductive activity of Macoma balthica shows increases in reproductive activity concurrent with the decline in metal concentrations in the tissue of this organism. Reproductive activity is presently stable with almost all animals reproducing during the two reproductive seasons (spring and fall) of most years. These findings are consistent with findings previously reported for the 1974 through 2002 period.

Shouse, Michelle K.; Parchaso, Francis; Thompson, Janet K.

2004-01-01

105

Near field receiving water monitoring of benthic community near the Palo Alto Water Quality Control Plant in south San Francisco Bay : February 1974 through December 2000  

USGS Publications Warehouse

Analyses of the benthic community structure over a 26-year period show that changes in the community have occurred concurrent with reduced concentrations of metals in the sediment and in the tissues of the biosentinal clam Macoma balthica from the same area. The community has shifted from being dominated by several opportunistic species to a community where the species are more similar in abundance, a pattern that could be indicative of a more stable community that is subjected to less stress. In addition, two of the opportunistic species (Ampelisca abdita and Streblospio benedicti) that brood their young and live on the surface of the sediment in tubes have shown a continual decline in dominance coincident with the decline in metals. Heteromastus filiformis, a subsurface polychaete worm that lives in the sediment, consumes sediment and organic particles residing in the sediment, and reproduces by laying their eggs on or in the sediment has shown a concurrent increase in dominance. These changes in species dominance reflect a change in the community from one dominated by surface dwelling, brooding species to one with species with varying life history characteristics. Analysis of the reproductive activity of Macoma balthica shows increases in reproductive activity concurrent with the decline in metal concentrations in the tissue of this organism. Reproductive activity is presently stable with almost all animals reproducing during the two reproductive seasons (spring and fall) of most years.

Thompson, Janet K.; Parchaso, Francis; Shouse, Michelle K.

2002-01-01

106

Near-field receiving water monitoring of a benthic community near the Palo Alto Water Quality Control Plant in South San Francisco Bay: February 1974 through December 2002  

USGS Publications Warehouse

Analyses of the benthic community structure over a 28-year period show that changes in the community have occurred concurrent with reduced concentrations of metals in the sediment and in the tissues of the biosentinal clam Macoma balthica from the same area. The community has shifted from being dominated by several opportunistic species to a community where the species are more similar in abundance, a pattern that could be indicative of a more stable community that is subjected to less stress. In addition, two of the opportunistic species (Ampelisca abdita and Streblospio benedicti) that brood their young and live on the surface of the sediment in tubes have shown a continual decline in dominance coincident with the decline in metals. Heteromastus filiformis, a subsurface polychaete worm that lives in the sediment, consumes sediment and organic particles residing in the sediment, and reproduces by laying their eggs on or in the sediment has shown a concurrent increase in dominance. These changes in species dominance reflect a change in the community from one dominated by surface dwelling, brooding species to one with species with varying life history characteristics. Analysis of the reproductive activity of Macoma balthica shows increases in reproductive activity concurrent with the decline in metal concentrations in the tissue of this organism. Reproductive activity is presently stable with almost all animals reproducing during the two reproductive seasons (spring and fall) of most years. These findings are consistent with findings previously reported for the 1974 through 2000 period

Shouse, Michelle K.; Parchaso, Francis; Thompson, Janet K.

2003-01-01

107

Linking high-resolution geomorphic mapping, sediment sources, and channel types in a formerly glaciated basin of northeastern Alto-Adige/Sudtirol, Italy  

NASA Astrophysics Data System (ADS)

To characterize channel-network morphodynamics and response potential in the Gadria-Strimm basin (14.8 km^2) we conduct a concerted effort entailing: (i) high-resolution mapping of landforms, channel reaches, and sediment sources; and (ii) historical evolution of colluvial channel disturbance through sequential aerial photosets (1945-59-69-82-90-00-06-11). The mapping was carried out via stereographic inspection of aerial photographs, examination of 2.5-m gridded DTM and DSM, and extensive field work. The study area is a formerly glaciated basin characterized by peculiar landform assemblages imposed by a combination of tectonic and glacial first-order structures. The most striking feature in Strimm Creek is a structurally-controlled valley step separating an upper hanging valley, dominated by periglacial and fluvial processes, and a V-notched lower part in which lateral colluvial channels are directly connected to Strimm's main stem. In Gadria Creek, massive kame terraces located in proximity of the headwaters provide virtually unlimited sediment supply to frequent debris-flow activity, making this sub-catchment an ideal site for monitoring, hence studying the mechanics of these processes. Preliminary results point to a high spatial variability of the colluvial channel network, in which sub-sectors have remained consistently active during the study period while others have become progressively dormant with notable forest re-growth. In an attempt to link sediment flux to topography and substrate type, future work will involve photogrammetric analysis across the sequential aerial photosets as well as a morphometric/geomechanical characterization of the surficial materials.

Brardinoni, F.; Perina, E.; Bonfanti, G.; Falsitta, G.; Agliardi, F.

2012-04-01

108

Recém-nascidos de peso subótimo de uma população de alto nível socioeconômico Suboptimal birth weight in newborns of a high socioeconomic status population  

Microsoft Academic Search

objective: To compare sub-optimal birth weight (2,500 to 2,999 g) term newborns to appropriate for gestational age (birth weight ? 3,000 g) term newborns, regarding maternal data and newborn morbidity and mortality. Methods: Single term newborns, appropriate for ges- tational age from a high socioeconomic population (n = 1,242) with birth weight ranging from 2,500 to 2,999 g (Group I)

Maura Aparecida; Prado Vaccari; Villela Boacnin; Conceição Aparecida de Mattos Segre

109

Channel probe measurements for the American sector clutter experiment, January, 1994  

SciTech Connect

The ionospheric phenomenon called Equatorial Spread F encompasses a variety of effects associated with plasma irregularities occurring in the post-sunset and nighttime ionosphere near the magnetic equator. These irregularities can seriously degrade the performance of systems which involve either of necessity or inadvertently radio propagation through the equatorial ionosphere. One such system is Over-the-Horizon (OTH) radars which operate in the high-frequency (hf) band and use ionospheric reflection for forward and backscatter propagation to ranges of thousands of kilometers. When such radars are directed towards the equator, Spread F irregularities can cause scintillation effects which may be aliased into the ranges of interest and have the effect of causing, excess clutter in which targets may be hidden. In January, 1994 Los Alamos participated in a campaign to measure Spread F effects on OTH propagation from the United States looking towards South America in conjunction with local diagnostics in Peru. During the campaign Los Alamos fielded a 1600 km bistatic path between Piura, Peru, and Arequipa, Peru-, the one-hop reflection region for this path was near the magnetic equator, We obtained four types of measurements: an oblique ionogram between Piura and Arequipa every three minutes; Doppler spread and spatial correlation for a single frequency cw path between Piura and Arequipa; Doppler spread, time-delay spread, and spatial coherence for a 10 kHz bandwidth path between Piura and Arequipa-, and Doppler spread and time-delay spread for the one-way path between the AVA radar in New York and Arequipa, Peru. This report describes the diagnostic experiments that we carried out and gives a brief description of some of the data we obtained.

Fitzgerald, T.J.

1994-05-20

110

Peru  

Microsoft Academic Search

\\u000a Peru is the fourth most populous country in South America, after Brazil, Colombia, and Argentina, with 22,639,444 inhabitants,\\u000a according to the IX Population Census in 19931. Most of the population (about 70%) lives in large cities, such as Lima, Trujillo, Cuzco, Piura, and Chiclayo, with the remaining\\u000a living in rural villages. The total population is evenly divided between men and

Teresa Perez

111

Caracterización de las Diatomitas de Río Seco  

Microsoft Academic Search

Resumen: La existencia de diatomita en la zona de R'o Seco (Piura, Perœ), ha llevado a los autores a realizar un estudio de sus propiedades f'sicas, qu'micas y mineral—gicas, con el objeto de determinar sus principales usos y aplicaciones. Para ello se han utilizado las t?cnicas de an‡lisis convencional, as' como microscop'a —ptica y electr—nica, difracci—n de rayos X y

J. RODRÍGUEZ LICHTENHELDT; J. LOREDO; L. FELIPE VERDEJA; J. GARCÍA IGLESIAS; J. SANCHO MARTÍNEZ

112

Quasi 3D modeling of water flow and solute transport in vadose zone and groundwater  

NASA Astrophysics Data System (ADS)

The complexity of subsurface flow systems calls for a variety of concepts leading to the multiplicity of simplified flow models. One commonly used simplification is based on the assumption that lateral flow and transport in unsaturated zone is insignificant unless the capillary fringe is involved. In such cases the flow and transport in the unsaturated zone above groundwater level can be simulated as a 1D phenomenon, whereas through groundwater they are viewed as 2D or 3D phenomena. A new approach for a numerical scheme for 3D variably saturated flow and transport is presented. A Quasi-3D approach allows representing flow in the 'vadose zone - aquifer' system by a series of 1D Richards' equations solved in variably-saturated zone and by 3D-saturated flow equation in groundwater (modified MODFLOW code). The 1D and 3D equations are coupled at the phreatic surface in a way that aquifer replenishment is calculated using the Richards' equation, and solving for the moving water table does not require definition of the specific yield parameter. The 3D advection-dispersion equation is solved in the entire domain by the MT3D code. Using implicit finite differences approximation to couple processes in the vadose zone and groundwater provides mass conservation and increase of computational efficiency. The above model was applied to simulate the impact of irrigation on groundwater salinity in the Alto Piura aquifer (Northern Peru). Studies on changing groundwater quality in arid and semi-arid lands show that irrigation return flow is one of the major factors contributing to aquifer salinization. Existing mathematical models do not account explicitly for the solute recycling during irrigation on a daily scale. Recycling occurs throughout the unsaturated and saturated zones, as function of the solute mass extracted from pumping wells. Salt concentration in irrigation water is calculated at each time step as a function of concentration of both surface water and groundwater extracted at specific locations. Three scenarios were considered: (i) use of furrow irrigation and groundwater extraction (the present situation); (ii) increase of groundwater pumping by 50% compared to the first scenario; and (iii) transition from furrow irrigation to drip irrigation, thus decreasing irrigation volume by around 60% compared to the first scenario. Results indicate that in different irrigation areas, the simulated increase rates of total dissolved solids in groundwater vary from 3 to17 mg/L/ year, depending on hydrogeological and hydrochemical conditions, volumes of water extracted, and proportion between surface water and groundwater applied. The transition from furrow irrigation to drip irrigation can decrease the negative impact of return flow on groundwater quality; however drip irrigation causes faster simulated soil salinization compared to furrow irrigation. The quasi 3D modeling appeared to be efficient in elucidating solute recycling effects on soil and groundwater salinity.

Yakirevich, A.; Kuznetsov, M.; Weisbrod, N.; Pachepsky, Y. A.

2013-12-01

113

POLIMORFISMO DE GLUTENINAS DE ALTO PESO MOLECULAR Y SU RELACIÓN CON TRIGOS HARINEROS PARA TEMPORAL* POLIMORPHISM OF HIGH MOLECULAR WEIGHT GLUTENINS AND ITS RELATIONSHIP WITH IN RAINFED BREAD WHEAT  

Microsoft Academic Search

In order to identify the high molecular weight glutenins subunits and its relationship with the bread-making quality, as well as to characterize the bread quality of the group of genotypes of bread wheat (Triticum aestivum L.), 130 genotypes were seeded under rainfed conditions at Santa Lucia de Prias, Estado de Mexico in 2001. In the analysis of physical and chemical

Eduardo Espitia Rangel; Eliel Martínez Cruz; Roberto Javier; Peña Bautista; Héctor Eduardo; Villaseñor Mir; Julio Huerta

114

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

115

Dynamic Study of the Upper Sao Francisco River and the Tres Marias Reservoir Using Mss/Landsat Images Estudo Dinamico Do Alto Rico Sao Francisco Ereservatorio Detres Marias, Atraves de Imagens Mss/Landsat.  

National Technical Information Service (NTIS)

The use of LANDSAT multispectral ban scanner imagery to verify the relationship between the behavior of the Tres Marias reservoir and the dynamics of the Sao Francisco River supply basin is described. The dispersion of suspended sediments and their concen...

N. Dejesusparada T. M. Sausen

1981-01-01

116

A High Level Language for Data Acquisition and Process Control Lanac - Uma Linguagem de Alto Nivel Para Aquisicao de Dados E Controle de Processos Lgn in Portugese; English Summary.  

National Technical Information Service (NTIS)

An ALGOL like language, LANAC, with statements in Portuguese, without recursion, is described. It was developed at INPE/CNPq for minicomputers applied in real time systems; so it has available SEMAPORES for concurrent process synchronization. The LANAC co...

F. E. Decarvalhoviola S. D. Fischer C. Derennaesouza

1981-01-01

117

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

118

Near-field receiving water monitoring of trace metals and a benthic community near the Palo Alto Regional Water Quality Control Plant in South San Francisco Bay, California-2010  

USGS Publications Warehouse

Analyses of the benthic community structure of a mudflat in South San Francisco Bay over a 37-year period show that changes in the community have occurred concurrent with reduced concentrations of metals in the sediment and in the tissues of the biosentinel clam, M. petalum, from the same area. Analysis of the M. petalum community shows increases in reproductive activity concurrent with the decline in metal concentrations in the tissues of this organism. Reproductive activity is presently stable (2010), with almost all animals initiating reproduction in the fall and spawning the following spring of most years. The community has shifted from being dominated by several opportunistic species to a community where the species are more similar in abundance, a pattern that indicates a more stable community that is subjected to fewer stressors. In addition, two of the opportunistic species (Ampelisca abdita and Streblospio benedicti) that brood their young and live on the surface of the sediment in tubes have shown a continual decline in dominance coincident with the decline in metals; both species had short-lived rebounds in abundance in 2008, 2009, and 2010. Heteromastus filiformis (a subsurface polychaete worm that lives in the sediment, consumes sediment and organic particles residing in the

Dyke, Jessica L.; Parchaso, Francis; Thompson, Janet K.; Cain, Daniel J.; Luoma, Samuel N.; Hornberger, Michelle I.

2011-01-01

119

[Atypic toxocariasis: a case report from the Peruvian north coast].  

PubMed

We present the case of a 4.5 years old boy with atypic toxocariasis, from La Matanza, Morropon, Piura. The patient had non-specific symptoms during 9 days. Suspicion of Toxocariasis was supported by marked eosinophilia in the cell blood count (15% or 1470 cells/?L). Diagnosis was confirmed by laboratory with ELISA serology demonstrating the presence of IgG and IgM anti-Toxocara antibodies. Symptoms receded before the patient received a five-day treatment with albendazol 15mg/kg/day. PMID:21072459

Terrones-Campos, Cynthia; Andrade, Teresa; Lachira, Arnaldo; Valladolid, Omar; Lanata, Claudio F

2010-03-01

120

78 FR 35302 - Changes in Flood Hazard Determinations  

Federal Register 2010, 2011, 2012, 2013

...Public Works Department, April 18, 2013................. 060342 B-1294). Hills (12-09-2859P). Larsen, Mayor, Town 26379 Fremont Road, Los of Los Altos Hills, Altos Hills, CA 94022. 26379 Fremont Road, Los Altos...

2013-06-12

121

40 CFR 81.316 - Iowa.  

Code of Federal Regulations, 2010 CFR

...Palo Alto County Plymouth County Pocahontas County Polk County Pottawattamie...Palo Alto County Plymouth County Pocahontas County Polk County Pottawattamie...Palo Alto County Plymouth County Pocahontas County Polk County...

2009-07-01

122

76 FR 30393 - Amended Certification Regarding Eligibility To Apply for Worker Adjustment Assistance  

Federal Register 2010, 2011, 2012, 2013

...California: Auburn, Cupertino, Palm Springs, Palo Alto, Roseville (Two Locations) and...California: Auburn, Cupertino, Palm Springs, Palo Alto and Roseville (Two Locations...Auburn, Cupertino, Palm Springs, Palo Alto, Roseville (two locations),...

2011-05-25

123

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

124

Entomopathogenicity of native bacteria from Anastrepha fraterculus and Ceratitis capitata against the pest Phyllocnistis citrella.  

PubMed

In Piura (Peru), the pest Phyllocnistis citrella Stainton damages the photosynthetic rate and new bud production of Citrus aurantiifolia Swingle (sweet lemon), decreasing the yield, productivity and commercial price of its fruit. Biological control was evaluated through the crossed effect of bacteria obtained from pests (Anastrepha fraterculus Wied., Ceratitis capitata Wied. and Rhynchophorus palmarum L.) that are pathogenic against their original host species. Enterobacter cloacae (Jordan) Hormaeche & Edwards and Serratia marcescens Bizio (from A. fraterculus and C. capitata) and Pseudomonas mendocina Palleroni (from R. palmarum) were used against P. citrella. The bacterial strains were inoculated into its food and the accumulated mortality was evaluated. Larvae of P. citrella treated with P. mendocina had the highest mortality (66.7%). These bacterial species were entomopathogenic against the original source pest in laboratory and greenhouse bioassays, and this result widens the pathological activity range of these bacterial species. PMID:17348070

Campos, Yany; Sepúlveda, Bernardo; Tume, Pedro

2007-04-01

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

CURVA De ReFeReNCIA PeRUANA DeL PeSo De NACIMIeNTo PARA LA eDAD GeSTACIoNAL Y SU APLICACIÓN PARA LA IDeNTIFICACIÓN De UNA NUeVA PobLACIÓN NeoNATAL De ALTo RIeSGo  

Microsoft Academic Search

ReSUMeN El peso de nacimiento en relación con la edad gestacional, tiene valor pronóstico y sirve para el manejo clínico del recién nacido. La OMS recomienda patrones de crecimiento fetal en los centros perinatológicos, pues se detecta diferencias según países y condiciones de vida. Objetivos. Obtener una curva de referencia peruana del peso de nacimiento para la edad gestacional (CR-PNEG),

Manuel Ticona-Rendón; Diana Huanco-Apaza

127

Avaliacao de Dados Obtidos Pelo TM LANDSAT Para Implantacao de Projetos de Colonizacao de Microreggiao Do Alto Purus Estado Do Acre (Evaluation of Data Obtained from the LANDSAT Thematic Mapper for Implementation of Colonization Projects of the Microregion of the Upper Purus River, Eastern Acre State).  

National Technical Information Service (NTIS)

The potential use of LANDSAT TM imagery to obtain information concerning drainage and vegetation in the Microregion of the Upper Purus River, Eastern Acre State, is evaluated in this study. An intense occupation process has taken place in this area by mea...

A. Luchiari

1986-01-01

128

Book Review: Mindsight: Near-Death and Out-of-Body Experiences in the Blind, by Kenneth Ring and Sharon Cooper. Palo Alto, CA: William James Center for Consciousness Studies\\/Institute of Transpersonal Psychology, 1999, 217 pp. + xix, $12.95, pb  

Microsoft Academic Search

I approached Mindsight: Near-Death and Out-of-Body Experiences in the Blind with my usual anticipation in reading work done by Kenneth Ring, who is known to me personally and through his scholarly writing over many years of research into near-death experiences (NDEs). Together with his co-author, Sharon Cooper, he has produced another fascinating book reflecting research into apparent “mindsight” of people

Stuart W. Twemlow

2002-01-01

129

Student Aptitudes and Methods of Teaching Beginning Reading: A Predictive Instrument for Determining Interaction Patterns. Final Report.  

ERIC Educational Resources Information Center

The question of whether reading methods interact differentially with student sequencing abilities was investigated. One hundred and thirty-one children from three schools in Palo Alto, California, were given reading instruction using a linguistic approach (Palo Alto Reading Program), and 115 children from three Palo Alto schools used a whole-word…

Stallings, Jane A.; Keepes, Bruce D.

130

Southern Oscillation Signal in South American Palaeoclimatic Data of the Last 7000 Years  

NASA Astrophysics Data System (ADS)

During strong El Niño events, rainfall anomalies and changes in wind patterns are observed in different regions of South America. Along the central Brazilian coast, during the 1983 El Niño year, the frontal systems were blocked to the south, provoking a reversal of the longshore sand transport. Long-duration reversals of longshore transport were also recorded in Holocene beach-ridge terraces from the Rio Doce coastal plain. This led to the formulation of a model relating these reversals of longshore transport to El Niño-like conditions. El Niño-like conditions are past average climate situations that generate the same perturbations as the strong El Niño events observed during the last decade. They are likely to correspond to the long-duration low phase of the Southern Oscillation. To confirm this hypothesis we compared the Holocene beach-ridge record with other palaeoenvironmental records from regions where strong El Niño events would have a substancial signal as well: (1) water-level fluctuations of Lake Titicaca, (2) a pollen and sediment record in an eastern Amazonian lake, (3) changes of the Rio Xingu discharge in eastern Amazonia, and (4) variations of sand supply at the Rio Piura and Rio Chira outlets in the Sechura Desert. The occurrences of El Niño-like conditions were numerous before 3900-3600 yr B.P., absent between 39003600 and 2800-2500 yr B.P., and infrequent after 2800-2500 yr B.P.

Martin, Louis; Fournier, Marc; Mourguiart, Philippe; Sifeddine, Abdelfatah; Turcq, Bruno; Flexor, Jean-Marie; Absy, Maria Lucia

1993-05-01

131

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

132

Plasmodium vivax Hospitalizations in a Monoendemic Malaria Region: Severe Vivax Malaria?  

PubMed

Severe malaria caused by Plasmodium vivax is no longer considered rare. To describe its clinical features, we performed a retrospective case control study in the subregion of Luciano Castillo Colonna, Piura, Peru, an area with nearly exclusive vivax malaria transmission. Severe cases and the subset of critically ill cases were compared with a random set of uncomplicated malaria cases (1:4). Between 2008 and 2009, 6,502 malaria cases were reported, including 106 hospitalized cases, 81 of which fit the World Health Organization definition for severe malaria. Of these 81 individuals, 28 individuals were critically ill (0.4%, 95% confidence interval = 0.2-0.6%) with severe anemia (57%), shock (25%), lung injury (21%), acute renal failure (14%), or cerebral malaria (11%). Two potentially malaria-related deaths occurred. Compared with uncomplicated cases, individuals critically ill were older (38 versus 26 years old, P < 0.001), but similar in other regards. Severe vivax malaria monoinfection with critical illness is more common than previously thought. PMID:24752683

Quispe, Antonio M; Pozo, Edwar; Guerrero, Edith; Durand, Salomón; Baldeviano, G Christian; Edgel, Kimberly A; Graf, Paul C F; Lescano, Andres G

2014-07-01

133

Periodic and quiescent solar activity effects in the low ionosphere, using SAVNET data  

NASA Astrophysics Data System (ADS)

Important results have been acquired using the measurements of VLF amplitude and phase signals from the South America VLF Network (SAVNET) stations. This network is an international project coordinated by CRAAM, Brazil in cooperation with Peru and Argentina. It started operating in April 2006, and now counts on eight stations (Atibaia, Palmas, Santa Maria and Estaça~o Antártica Comandante Ferraz in Brazil; Piura, Punta-Lobos and Ica, in Peru; CASLEO, in Argentina). Researches, through the last decades, have demonstrated the versatility of the VLF technique for many scientific and technological purposes. In this work, we summarize some recent results using SAVNET data base. We have obtained daily maximum diurnal amplitude time series that exhibited behavior patterns in different time scales: 1) 1ong term variations indicating the solar activity level control of the low ionosphere; 2) characteristic periods of alternated slow and fast variations, the former being related to solar illumination conditions, and the latter that have been associated with the winter anomaly at high latitudes; 3) 27-days period related to the solar rotation and consequently associated to the solar Lyman-? radiation flux variations, reinforcing earlier theories about the importance of this spectral line for the D-region formation. Finally, we conclude presenting preliminary results of simulation using LWPC, which showed very good agreement at times of observed modal amplitude minima for a given VLF propagation path.

Bertoni, F. C. P.; Raulin, J.-P.; Gavilan, H. R.; Kaufmann, P.; Raymundo, T. E.

2010-10-01

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

Data-Driven Districts.  

ERIC Educational Resources Information Center

Describes the use of data-driven decision-making in four school districts: Plainfield Public Schools, Plainfield, New Jersey; Palo Alto Unified School District, Palo Alto, California; Francis Howell School District in eastern Missouri, northwest of St. Louis; and Rio Rancho Public Schools, near Albuquerque, New Mexico. Includes interviews with the…

LaFee, Scott

2002-01-01

136

Stanford's Interest in Cable Television. (With Appended Submission to the Federal Communications Commission by the Stanford Cable Television Committee).  

ERIC Educational Resources Information Center

Stanford University, in planning for cable television, should be aware of the future possibilities and the costs. It should join the City of Palo Alto in obtaining a cable system, assuming that Palo Alto selects a modern two-way (subscriber response capability) system. Interconnection with other mid-Peninsula cable television systems is desirable,…

Parker, Edwin B.

137

Computer Utilization by Schools: An Example.  

ERIC Educational Resources Information Center

The Educational Data Services Department of the Palo Alto Unified School District is responsible for implementing data processing needs to improve the quality of education in Palo Alto, California. Information from the schools enters the Department data library to be scanned, coded, and corrected prior to IBM 1620 computer input. Operating 17…

Tondow, Murray

1968-01-01

138

Administration: Enrollments, Early Retirement  

ERIC Educational Resources Information Center

Hofstra University reduces its tuition by $500 for students from families grossing between $10,000 and $25,000 a year; Palo Alto and Los Altos, California, school districts have pre-retirement programs designed to phase out older teachers and administrators and to phase in younger ones. (Author/MLF)

Nation's Schools and Colleges, 1975

1975-01-01

139

Beginning Reading Instruction for Children with Minimal Brain Dysfunction.  

ERIC Educational Resources Information Center

The study involving 63 children (6 to 8 years old) compared the effects of two reading programs, the Palo Alto Reading Program and DISTAR, on primary grade children with reading problems. Results indicated that use of an operant reading program (DISTAR) was more effective than the Palo Alto program. (SBH)

Stein, Claudia L'E.; Goldman, Jacquelin

1980-01-01

140

The isolation of Balamuthia mandrillaris from environmental sources from Peru.  

PubMed

Balamuthia mandrillaris is an opportunistic free-living amoeba that has been reported to cause skin lesions and the fatal Balamuthia amoebic encephalitis (BAE) in humans and other animals. Currently, around 200 human BAE cases have been reported worldwide, although this number is considered to be underestimated. The highest number of BAE cases has been reported in the American continent, mainly in the southwest of the USA. Peru seems to be another hotspot for BAE with around 55 human cases having been identified, usually involving cutaneous infection, especially lesions in the central face area. The isolation of Balamuthia from environmental sources has been reported on only three prior occasions, twice from Californian soils and once from dust in Iran and so it seems that this amoeba is relatively rarely encountered in samples from the environment. We investigated that possibility of finding the amoebae in soil samples from different regions where clinical cases have been reported in Peru. Twenty-one samples were cultured in non-nutrient agar plates and were checked for the presence of B. mandrillaris-like trophozoites and/or cysts. Those samples that were positive for these amoebae by microscopic criteria were then confirmed by PCR amplification and DNA sequencing of the mitochondrial 16S rDNA gene of B. mandrillaris. We have detected the presence of B. mandrillaris in four samples collected in the regions of Piura (3) and Lima (1) where infection cases have been previously reported. We hypothesize that B. mandrillaris is present in Peru in soil and dust which therefore constitutes a source of the infection for the BAE cases previously reported in this country. Further studies should be carried out in the area to confirm the generality of this finding. PMID:24781021

Cabello-Vílchez, Alfonso Martín; Reyes-Batlle, María; Montalbán-Sandoval, Esmelda; Martín-Navarro, Carmen M; López-Arencibia, Atteneri; Elias-Letts, Rafaela; Guerra, Humberto; Gotuzzo, Eduardo; Martínez-Carretero, Enrique; Piñero, José E; Maciver, Sutherland K; Valladares, Basilio; Lorenzo-Morales, Jacob

2014-07-01

141

El Niño-Southern Oscillation-based index insurance for floods: Statistical risk analyses and application to Peru  

NASA Astrophysics Data System (ADS)

Index insurance has recently been advocated as a useful risk transfer tool for disaster management situations where rapid fiscal relief is desirable and where estimating insured losses may be difficult, time consuming, or subject to manipulation and falsification. For climate-related hazards, a rainfall or temperature index may be proposed. However, rainfall may be highly spatially variable relative to the gauge network, and in many locations, data are inadequate to develop an index because of short time series and the spatial dispersion of stations. In such cases, it may be helpful to consider a climate proxy index as a regional rainfall index. This is particularly useful if a long record is available for the climate index through an independent source and it is well correlated with the regional rainfall hazard. Here El Niño-Southern Oscillation (ENSO) related climate indices are explored for use as a proxy to extreme rainfall in one of the districts of Peru, Piura. The ENSO index insurance product may be purchased by banks or microfinance institutions to aid agricultural damage relief in Peru. Crop losses in the region are highly correlated with floods but are difficult to assess directly. Beyond agriculture, many other sectors suffer as well. Basic infrastructure is destroyed during the most severe events. This disrupts trade for many microenterprises. The reliability and quality of the local rainfall data are variable. Averaging the financial risk across the region is desirable. Some issues with the implementation of the proxy ENSO index are identified and discussed. Specifically, we explore (1) the reliability of the index at different levels of probability of exceedance of maximum seasonal rainfall, (2) the effect of sampling uncertainties and the strength of the proxy's association to local outcome, (3) the potential for clustering of payoffs, (4) the potential that the index could be predicted with some lead time prior to the flood season, and (5) evidence for climate change or nonstationarity in the flood exceedance probability from the long ENSO record.

Khalil, Abedalrazq F.; Kwon, Hyun-Han; Lall, Upmanu; Miranda, Mario J.; Skees, Jerry

2007-10-01

142

ENSO-Based Index Insurance: Approach and Peru Flood Risk Management Application  

NASA Astrophysics Data System (ADS)

Index insurance has recently been advocated as a useful risk transfer tool for disaster management situations where rapid fiscal relief is desirable, and where estimating insured losses may be difficult, time consuming, or subject to manipulation and falsification. For climate related hazards, a rainfall or temperature index may be proposed. However, rainfall may be highly spatially variable relative to the gauge network, and in many locations data are inadequate to develop an index due to short time-series and the spatial dispersion of stations. In such cases, it may be helpful to consider a climate proxy index as a regional rainfall index. This is particularly useful if a long record is available for the climate index through an independent source and it is well correlated with the regional rainfall hazard. Here, ENSO related climate indices are explored for use as a proxy to extreme rainfall in one of the departments of Peru -- Piura. The ENSO index insurance product may be purchased by banks or microfinance institutions (MFIs) to aid agricultural damage relief in Peru. Crop losses in the region are highly correlated with floods, but are difficult to assess directly. Beyond agriculture, many other sectors suffer as well. Basic infrastructure is destroyed during the most severe events. This disrupts trade for many micro-enterprises. The reliability and quality of the local rainfall data is variable. Averaging the financial risk across the region is desirable. Some issues with the implementation of the proxy ENSO index are identified and discussed. Specifically, we explore (a) the reliability of the index at different levels of probability of exceedance of maximum seasonal rainfall; (b) the potential for clustering of payoffs; (c) the potential that the index could be predicted with some lead time prior to the flood season; and (d) evidence for climate change or non-stationarity in the flood exceedance probability from the long ENSO record. Finally, prospects for the global application of an ENSO based index insurance product are discussed.

Khalil, A. F.; Kwon, H.; Lall, U.; Miranda, M. J.; Skees, J. R.

2006-12-01

143

13. Photocopy of archtect's drawing (original in Documents Collection, College ...  

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

13. Photocopy of archtect's drawing (original in Documents Collection, College of Environmental Design, University of California, Berkeley, CA) December 27, 1921, Julia Morgan, architect SECOND FLOOR PLAN - John G. Kennedy House, 423 Chaucer Street, Palo Alto, Santa Clara County, CA

144

15. Photocopy of architect's drawing (original in Documents Collection, College ...  

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

15. Photocopy of architect's drawing (original in Documents Collection, College of Environmental Design, University of California, Berkeley, CA) December 27, 1921, Julia Morgan, architect REAR ELEVATION - John G. Kennedy House, 423 Chaucer Street, Palo Alto, Santa Clara County, CA

145

14. Photocopy of architect's drawing (original in Documents Collection, College ...  

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

14. Photocopy of architect's drawing (original in Documents Collection, College of Environmental Design, University of California, Berkeley, CA) December 27, 1921, Julia Morgan, architect MAIN (FRONT) ELEVATION - John G. Kennedy House, 423 Chaucer Street, Palo Alto, Santa Clara County, CA

146

11. Photocopy of architect's drawing (original in Documents Collection, College ...  

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

11. Photocopy of architect's drawing (original in Documents Collection, College of Environmental Design, University of California, Berkeley, CA) December 27, 1921, Julia Morgan, architect FOUNDATION PLAN - John G. Kennedy House, 423 Chaucer Street, Palo Alto, Santa Clara County, CA

147

12. Photocopy of architect's drawing (original in Documents Collection, College ...  

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

12. Photocopy of architect's drawing (original in Documents Collection, College of Environmental Design, University of California, Berkeley, CA) December 27, 1921, Julia Morgan, architect FIRST FLOOR PLAN - John G. Kennedy House, 423 Chaucer Street, Palo Alto, Santa Clara County, CA

148

HIPERTENSIÓN ARTERIAL EN EL CUERPO DE GUARDIA DE UN POLICLÍNICO PRINCIPAL DE URGENCIA  

Microsoft Academic Search

RESUMEN: RESUMEN: RESUMEN: RESUMEN: RESUMEN: Se realizó un análisis acerca del motivo de consulta, las causas del control inadecuado, el horario en que son atendidos estos pacientes, y se encontró que un alto porcentaje tiene un mal seguimiento al \\

Iván Justo Roll; Aniubis Díaz Ballester; Susana Balcindes Acosta; Suylleng Yee Seuret; Sandra Arnaiz Ferrer

149

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

150

Relation Between Ocean Temperature and Ocean Level Change in the Tropical Atlantic and Precipitation in the Amazon Region of Northeast Brazil Relacoes Entre Temperatura DA Agua Do Mar E Divergencia AO Nivel Do Mar No Atlantico Tropical E Precipitacao NAS Regioes Amazonica E Nordeste Do Brasil.  

National Technical Information Service (NTIS)

The precipitation series for the rainy season over northeastern Brazil (Fortaleza and Quixeramobim) and the Amazon Region (manaus, Belem, Taperinha, Conceicao do Araguaia and Alto Tapajos) and a 48 station average of normalized departure of annual precipi...

M. T. Kagano

1982-01-01

151

76 FR 19788 - Notice Pursuant to the National Cooperative Research and Production Act of 1993-Telemanagement Forum  

Federal Register 2010, 2011, 2012, 2013

...TIBCO Software Inc, Palo Alto, CA; T-Mobile Nederland BV, Den Haag, NETHERLANDS...Ciminko, Luxembourg, LUXEMBOURG; Cloud Scope Technologies, Inc., Tokyo, JAPAN...Hong Kong, HONG KONG-CHINA; SARA computing and networking services,...

2011-04-08

152

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

153

77 FR 60672 - Grant of Authority for Subzone Status; Tesla Motors, Inc., (Electric Passenger Vehicles), Palo...  

Federal Register 2010, 2011, 2012, 2013

...Tesla Motors, Inc., (Electric Passenger Vehicles), Palo Alto and Fremont...special-purpose subzone at the electric passenger vehicle manufacturing facilities...to the manufacturing of electric passenger vehicles and related...

2012-10-04

154

What Is a Cesarean Delivery?  

MedlinePLUS

... Health How Can You Improve a Woman’s Health? Study the Health of Populations. Estudio de los NIH vincula los niveles altos de colesterol a una fertilidad ... Mobile NIH...Turning Discovery Into Health ® ...

155

Laboratory Diagnosis of Toxoplasma gondii Infection and Toxoplasmosis  

Microsoft Academic Search

For the past 40 years, the Toxoplasma Serology Laboratory at the Palo Alto Medical Foundation Research Institute (TSL-PAMFRI) has been dedicated to the laboratory diagnosis of Toxoplasma gondii infection and toxoplasmosis. TSL-PAMFRI is the \\

Infectious Diseases

2002-01-01

156

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

157

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

158

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

159

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

160

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

161

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

Code of Federal Regulations, 2013 CFR

...within the outermost boundaries of the area so delimited): In the 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...

2013-07-01

162

Art . . . In and After School.  

ERIC Educational Resources Information Center

Described is a program developed by parents and school personnel which provides art education to students in the Palo Alto (California) district in an after school setting. There is a fee; the teachers are professional artists. (KC)

Alexander, Kay

1979-01-01

163

Computer Tutors: An Innovative Approach to Computer Literacy. Part I: The Early Stages.  

ERIC Educational Resources Information Center

Describes the development of the Computer Tutor project in Palo Alto, California, a computer literacy pilot program in which tutors are used to teach high school students and other interested persons computer programing. (JJD)

Targ, Joan

1981-01-01

164

K.I.S.S. and Kids: A Mandate for Prevention  

ERIC Educational Resources Information Center

Described is development and content of the Peer Counseling Program which trained 175 students to help other students with personal problems or situational stress in the Palo Alto (California) secondary schools. (Author/MC)

Bower, Eli M.

1972-01-01

165

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

166

76 FR 33363 - In the Matter of Certain Wireless Communication Devices and Systems, Components Thereof, and...  

Federal Register 2010, 2011, 2012, 2013

...Hewlett-Packard Company, 3000 Hanover Street, Palo Alto, CA 94304- 1185. Apple Inc., 1 Infinite Loop, Cupertino, CA 95014. Aruba Networks, Inc., 1344 Crossman Avenue, Sunnyvale, CA 94089- 1113. Meru Networks, 894 Ross Drive, Sunnyvale, CA...

2011-06-08

167

77 FR 24738 - Certain Wireless Communication Devices and Systems, Components Thereof, and Products Containing...  

Federal Register 2010, 2011, 2012, 2013

...following entities as respondents: Hewlett-Packard Company of Palo Alto, California; Apple Inc. of Cupertino, California; Aruba Networks, Inc. of Sunnyvale, California; Meru Networks of Sunnyvale, California; and Ruckus Wireless of Sunnyvale,...

2012-04-25

168

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

169

Proceedings of coal transportation modeling workshop  

SciTech Connect

The coal transportation modeling workshop was held December 3-4, 1981, at Palo Alto, California. The workshop was sponsored jointly by the Electric Power Research Institute, Energy Analysis and Environment Division, Palo Alto, California, and by the US Department of Energy, Assistant Secretary for Fossil Energy, Office of Energy Supply Transportation and Coal Exports. Fourteen papers have been entered individually into EDB, ERA and EAPA. (LTN)

Bertram, K.M.; Kaplan, M.P. (eds.)

1982-07-01

170

Mitochondrial D-loop nucleotide diversity in Astyanax (Osteichthyes, Characidae) from the upper Paraná and upper Paraguay River basins.  

PubMed

The morphological discrimination between the species Astyanax altiparanae and A. asuncionensis of the upper Paraná River and Paraguay River basins, respectively, has always been difficult. Two D-loop haplogroups of A. altiparanae are known, one with the presence (AltoPR) or the absence (AltoPR-D) of a 32-bp block similar to that in A. asuncionensis. We examined these samples to characterize A. altiparanae and verify whether A. asuncionensis occurred in the upper Paraná River prior to the submergence of the Sete Quedas Falls when Itaipu reservoir was impounded. D-loop sequences were analyzed in A. altiparanae of the upper Paraná and Iguaçu Rivers and those of A. asuncionensis of the upper Paraguay River. The haplogroup AltoPR was found at all sites of the upper Paraná and Iguaçu Rivers, whereas AltoPR-D occurred in the Itaipu reservoir, floodplain and in the Tietê and Grande Rivers. Two haplogroups of A. asuncionensis were identified and both did not have the 32-bp block. However, AltoPR and AltoPR-D differed from one another in 5.1% of their bases and between 8.9 and 12.5% with regard to the haplogroups of the upper Paraguay basin. Further, AltoPR-D occurred in the Grande River upstream the Marimbondo Falls and other older reservoirs than Itaipu. The results reject the hypothesis of the establishment of A. asuncionensis and suggest that the haplogroup AltoPR-D existed in the upper Paraná River before the impounding of the Itaipu reservoir. Moreover, morphological similarity and high genetic variation within the altiparanae/asuncionensis group suggest the existence of a cryptic species complex. PMID:22614275

Prioli, A J; Carlo, V A; Soria, T V; Prioli, S M A P; Pavanelli, C S; Prioli, R A; Gomes, V N; Júlio, H F; Prioli, L M

2012-01-01

171

Robust decision-making under uncertainty for a moorland ecosystem's water resources management under scenarios of climate variability  

NASA Astrophysics Data System (ADS)

A climate-informed water resources decision-making framework can help effectively manage the complexity of water resources while adapting to climate change effects. The decision-making framework allows for more effective and inclusive water resources management, and results in better informed decisions about water allocation and adaptation strategies. This study focuses on modeling the moorland ecosystem's water resources management under climate variability, and strengthening the capacities of local actors through a robust decision-making under uncertainty framework to analyze and plan water resources use in the region of Piura, Peru. The objective is to determine the reliability of the moorland ecosystem's water supply and to provide relevant hydrological information under scenarios of climate variability and other non-climate uncertainties. As a first step, a participatory workshop was carried out with key regional actors to obtain information that would help to define the uncertainties that define availability of water resources, the potential strategies for adaptation to improve existing conditions, and the performance indicators by which to assess these uncertainties and strategies. For the identification of these factors, we used the XLRM assessment framework (eXogenous uncertainties, policy Levers, Relationships, and Measures). The XLRM framework allows us to organize the important elements of risk analysis and vulnerability in the four assessment categories. This study also used the WEAP (Water Evaluation And Planning system) platform to support water resources planning and decision-making under uncertainty e.g. climate change and other stresses in the system. Within the R component, WEAP was used to model the hydrological response of the moorland ecosystem. The model includes the results of the XLRM framework and seeks to determine the importance that the moorlands have on the regional water system. Results of this model include the head flows produced that feed the watershed management model under different sensitivity scenarios of precipitation and temperature. Vulnerability is observed on the produced base flows of the moorlands ecosystem due to a decrease in moorlands' area and to climate variability-related impacts during the 50 years of simulation. This system-level vulnerability has significant effects on the water supply available for downstream demand sites, including rural and agricultural users that rely exclusively on a reservoir.

Flores-Lopez, F.; Forni, L.; Escobar, M.; Purkey, D. R.

2013-12-01

172

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

PubMed

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. PMID:19187546

Bussmann, Rainer W; Sharon, Douglas

2009-01-01

173

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

174

Identification and distribution of New World Leishmania species characterized by serodeme analysis using monoclonal antibodies.  

PubMed

Five hundred thirty stocks of Leishmania isolated from human and domestic and wild reservoir hosts, representing a wide geographic distribution of endemic foci of American cutaneous (ACL) and visceral leishmaniases (AVL) were characterized and identified at species and/or subspecies levels based on their reactivity to a cross-panel of specific monoclonal antibodies using a radioimmune binding assay. This study confirms and extends our preliminary results on the high specificity of some of these monoclonals for the L. braziliensis, L. mexicana, and L. donovani complexes. This study also demonstrates the relative stability of these molecular markers and the general usefulness of the method for parasite identification. Two hundred ninety-two of 420 isolates of ACL were classified as members of the L. braziliensis complex. Two hundred twenty-seven were L. b. braziliensis; these showed the widest geographical distribution (Brazil: Amazonas, Bahia, Ceara, Espirito Santo, Goias, Minas Gerais, Para, Paraiba, Rio de Janeiro, and Sao Paulo; Honduras: Santa Barbara and Yoko; Peru: Ancash, Piura, and Ucayali; and Venezuela: Cojedes, Distrito Federal, Lara, Portuguesa, Vale Hondo, Yaracuy, and Zulia). Forty-one stocks were identified as L. b. guyanensis (from North Brazil: Amazonas, Amapa, Para, and Rondonia). Twenty-one stocks were identified as L. b. panamensis (from Costa Rica: Alajuela, Guanacasten, Limon, Puntarenas, and San Jose; and Honduras: El Paraiso, and Olancho). Out of 128 isolates classified as members of the L. mexicana complex, 74 were differentiated as L. m. amazonensis (from Bolivia; Brazil: Amazonas, Bahia, Ceara, Goias, Maranhao, Mato Grosso do Norte, and Para; Peru: Pasco Forest and Van Humboldt; and Venezuela: Carabobo, Guarico, and Merida). Forty-four stocks were identified as L. m. venezuelensis (from Venezuela: Lara). Six stocks were L. m. mexicana (from Belize; and Mexico: Campeche [corrected] and Quintana Roo, Yucatan). One hundred ten isolates from AVL were identified as L. donovani chagasi (from Brazil: Bahia, Ceara, Maranhao, Minas Gerais, Mato Grosso do Sul, Piaui, Rio de Janeiro, and Sergipe; and Honduras: Valle). The implications of these results with respect to both the clinical and epidemiological data (including the detection of seven unusual characterized stocks) are discussed. PMID:3826486

Grimaldi, G; David, J R; McMahon-Pratt, D

1987-03-01

175

Camera trap records of animal activity prior to a M=7 earthquake in Northern Peru  

NASA Astrophysics Data System (ADS)

Earthquake (EQ) preparation is associated with geophysical changes occurring over many scales. Some pre-earthquake (pre-EQ) processes affect the ionosphere, others leave their mark on biota. We report (i) on ionospheric anomalies recorded prior to the M=7 Contamana EQ [1] in North-Eastern Peru, 134 km deep, associated with the subduction of the Nazca plate underneath the Northern Andes, (ii) on changes in animal activity recorded in the Yanachaga National Park, about 320 km from the EQ epicentre, over a 30 day period leading up to the M=7 seismic event. Night-time Very Low Frequency (VLF) phase data were analyzed for the period 01 June to 31 Oct. 2011 using propagation paths passing close to the Yanachaga Park from the NAA emitter (USA) to receivers PIU in Piura and PLO in Lima (Peru). Ionospheric phase perturbations were observed starting 2 weeks before the EQ with periodicities from few tens of secs to few minutes. Animal activity data were obtained by evaluating the images of a cluster of 10 motion-triggered cameras of the Tropical Ecology Assessment and Monitoring Network www.teamnetwork.org. We analyzed 1359 photographic records for the pre-EQ period and 1491 photographic records for a control period with low seismicity. Animal activity started to noticeably decline 3 weeks before the EQ. Different animal species were found to react differently. The number of rodents declined to zero about one week before the EQ and so did the number of tapirs. Armadillos, a burrowing animal, were recorded in larger numbers. Though the armadillos were presumably also flushed out of their holes, they apparently did not hide like the rodents. We discuss the results in the context of recent advances in solid state physics, which provide plausible mechanisms for pre-EQ ionospheric anomalies and for changes in animal behavior. [1] Tavera, H. (2012), Report on the 24 Aug. 2011 M 7.0 Contamana, Peru, Intermediate Depth Earthquake Seismological Research Letters, 83, 1007-1013, doi: 10.1785/0220120005

Grant, R.; Raulin, J.; Freund, F.

2013-12-01

176

Final Optical Design of PANIC, a Wide-Field Infrared Camera for CAHA  

NASA Astrophysics Data System (ADS)

We present the Final Optical Design of PANIC (PAnoramic Near Infrared camera for Calar Alto), a wide-field infrared imager for the Ritchey-Chrtien focus of the Calar Alto 2.2 m telescope. This will be the first instrument built under the German-Spanish consortium that manages the Calar Alto observatory. The camera optical design is a folded single optical train that images the sky onto the focal plane with a plate scale of 0.45 arcsec per 18 ?m pixel. The optical design produces a well defined internal pupil available to reducing the thermal background by a cryogenic pupil stop. A mosaic of four detectors Hawaii 2RG of 2 k ×2 k, made by Teledyne, will give a field of view of 31.9 arcmin ×31.9 arcmin.

Cárdenas, M. C.; Rodríguez Gómez, J.; Lenzen, R.; Sánchez-Blanco, E.

177

Reconnaissance of sedimentation in the Rio Pilcomayo Basin, May 1975, Argentina, Bolivia, and Paraguay  

USGS Publications Warehouse

The Rio Pilcomayo ' Alto ' (Bolivia) and ' Superior ' (Bolivia, Argentina, and Paraguay) transport large quantities of sediment for the size of the basin. The Rio Pilcomayo ' Inferior ' (Argentina and Paraguay) carries little sediment. The large loads of the ' Alto ' and ' Superior ' must be considered before dams or irrigation projects are started. The shifting channel and flooding of the Rio Pilcomayo ' Superior ' also are problems to be considered before development. The Rio Pilcomayo ' Alto ' basin has relatively little sediment deposition whereas the ' Superior ' basin has considerable deposition. A part of the ' Superior ' channel is filled with sediment to the top of its banks. The upstream limit of filling is moving farther upstream each year causing the place of overbank flooding to move upstream also. (Woodard-USGS)

Ritter, John R.

1977-01-01

178

CARMENES: Blue Planets Orbiting Red Dwarfs  

NASA Astrophysics Data System (ADS)

CARMENES (Calar Alto high-Resolution search for M dwarfs with Exo-earths with Near-infrared and optical Echelle Spectrographs) will conduct a radial-velocity survey of ~ 300 M dwarfs with the 3.5m telescope at the Calar Alto Observatory. The CARMENES instrument is currently under construction; it consists of two independent échelle spectrographs, which together cover the wavelength range 0.55 - 1.7?m at a spectral resolution of R = 82,000. The spectrographs and the fiber input are designed with a goal of 1m/s radial velocity precision using simultaneous calibration with emission-line lamps.

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

2014-01-01

179

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

180

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

181

Acoustic and Perceptual Measures of SATB Choir Performances on Two Types of Portable Choral Riser Units in Three Singer-Spacing Conditions  

ERIC Educational Resources Information Center

Under controlled conditions, we assessed acoustically (long-term average spectra) and perceptually (singer survey, listener survey) six performances of an soprano, alto, tenor, and bass (SATB) choir ("N" = 27) as it sang the same musical excerpt on two portable riser units (standard riser step height, taller riser step height) with…

Daugherty, James F.; Manternach, Jeremy N.; Brunkan, Melissa C.

2013-01-01

182

SODA ASH TREATMENT OF NEUTRALIZED MINE DRAINAGE  

EPA Science Inventory

Utilization of acid mine drainage (AMD) streams as a source of potable and industrial water has become a major goal of several proposed AMD treatment schemes. From among the various schemes available, the lime neutralization/soda ash softening process was selected for use at Alto...

183

Miracles, Microcomputers, and Librarians.  

ERIC Educational Resources Information Center

Describes potential uses of microcomputers in library education and library automation based upon experiences with a four-user Altos ACS8000 microcomputer at the University of Chicago Graduate Library School. Word processing, training in online information retrieval using MIRABILIS (Microsystem for Interactive Bibliographic Searching), and…

Swanson, Don R.

1982-01-01

184

El secuestro en Colombia: Caracterización y costos económicos  

Microsoft Academic Search

El delito del secuestro en Colombia ha presentado una tendencia creciente en la última década. Este instrumento de guerra utilizado por distintos actores armados, tiene un alto impacto en diversas esferas de la sociedad; pues se han visto implicados sectores económicos, sociales y políticos. Por ello, con el objetivo de mostrar este impacto y realizar una caracterización del secuestro, basados

María Eugenia PINTO BORREGO; Ivette María ALTAMAR CONSUEGRA; Yilberto LAHUERTA PERCIPIANO; Luis fernando CEPEDA ZULETA

2004-01-01

185

Hacia un framework Orientado a Objetos para Bills of Materials Complejos  

Microsoft Academic Search

Las empresas de producción industrial se enfrentan por un lado, a los cambios constantes de las condiciones del mercado, como po r ejemplo, los patrones de demanda, ciclo de vida de los productos mucho más cortos, etc. Por otro, a un mercado global, que requiere que la cadena de suministros, alcance muy altos niveles de eficiencia. Para mantener la competitividad

Marcela Vegetti; Gabriela Henning; Horacio Leone

186

Hacia el Enlace entre la Estrategia Empresarial Mediante Modelos de Valor y el Software Mediante Modelos de Negocio: un Enfoque MDD  

Microsoft Academic Search

Uno de los objetivos del modelado de negocio es compren- der el funcionamiento de las empresas con el fin de aportar soluciones software de alto valor anadido. Estos modelos de negocio se ubican en diferentes perspec- tivas, desde aquellas mas cercanas a la estrategia del negocio, hasta las mas cercanas al software. A pesar de la importancia del modelado de

José Bocanegra; Antonio Ruiz-Cortés

187

Introducing Recorder Ensembles in General Music Classes.  

ERIC Educational Resources Information Center

Focuses on the use of recorder ensembles in general music classes, discussing topics such as strategies for procuring soprano, alto, and bass recorders and ensemble activities for grades 3-8. Provides a bibliography of resources for recorder playing and information on transposition and arranging music. (CMK)

Kersten, Fred

2000-01-01

188

Planificación urbana versus autoregulación: la ciudad de Fortaleza (Brasil) como tablero de juego de diferentes agentes  

Microsoft Academic Search

Fortaleza es una ciudad relativamente jóven en cuanto a su importancia como metrópoli regional, caracterizándose sobre todo en las últimas décadas por una muy fuerte dinámica demográfica, económica y política. En este contexto el espacio urbano se ha convertido en una mercancía de alto costo, disputada entre los intereses contradictorios de compañías influentes, especuladores inmobiliarios, políticos y el resto de

Waltraud Rosner; Ulli Vilsmaier

2007-01-01

189

Effect of Agriculture on Cedar Lake Water Quality.  

National Technical Information Service (NTIS)

This study was made to delineate the type, distribution, and magnitude of orchard-related pesticides in the aquatic environment of Cedar Lake which includes the older impoundments of Little Cedar Lake and the Alto Pass Reservoir. Cedar Lake is a source of...

D. P. Roseboom R. L. Evans T. E. Hill

1979-01-01

190

Browsing Electronic Mail: Experiences Interfacing a Mail System to a DBMS  

Microsoft Academic Search

A database management system provides the ideal support for electronic mail applications. The Walnut mail system built at the Xerox Palo Alto Research Center was recently redesigned to take better advantage of its underlying database facilities. The ability to pose ad-hoc queries with a \\

Jack Kent; Douglas B. Terry; Willie-sue Orr

1988-01-01

191

Natural disasters and the gas pipeline system. Topical report, August 1994June 1995  

Microsoft Academic Search

Episodic descriptions are provided of the effect of the Loma Prieta earthquake (1989) on the gas pipeline systems of Pacific Gas & Electric Company and the City of Palo Alto and of the Northridge earthquake (1994) on Southern California Gas` pipeline system. The emergency response plans and activities of South Carolina Electric & Gas Company during hurricane Hugo (1989) and

S. Atallah; S. Saxena; S. B. Martin; A. B. Willowby; R. Alger

1996-01-01

192

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.

193

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

194

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.

195

Descripción del funcionamiento del mercado secundario de bonos soberanos locales en Chile  

Microsoft Academic Search

En este trabajo se describe el funcionamiento del mercado secundario de los bonos de largo plazo soberanos locales. Más específicamente, se describen en profundidad los agentes involucrados, los instrumentos transados y los tipos de plataformas existentes. A partir de este trabajo es posible obtener las siguientes conclusiones. Primero, existe un alto grado de segmentación en el mercado secundario de renta

Sergio D’Acuña; Sergio Godoy; Nicolás Malandre

2009-01-01

196

Autonomous Robots in SWAT Applications: Research, Design, and Operations Challenges  

Microsoft Academic Search

This paper describes the efforts of Stanford University's Aerospace Robotics Laboratory (ARL), the Palo Alto - Mountain View (California) Regional Special Weapons and Tactics (SWAT) team, and the MLB Company to bridge the gap between the perception of potential uses of autonomous robots in police SWAT environments and the reality of their application. The ARL researchers were given freedom of

Henry L Jones; Steve Morris

197

Butterfly diversity and human land use: Species assemblages along an urban grandient  

Microsoft Academic Search

We examined the distribution and abundance of butterfly species across an urban gradient and concomitant changes in community structure by censusing the butterfly and skipper populations at 48 points within six sites near Palo Alto, California, USA (all former oak woodlands). These sites represent a gradient of urban land use running from relatively undisturbed to highly developed and include a

Robert B. Blair; Alan E. Launer

1997-01-01

198

Portugal.  

ERIC Educational Resources Information Center

Brief information is provided on the region, climate, agriculture and industry of 10 provinces in Portugal: Tras-os-Montes e Alto Douro, located in Portugal's northeastern region; Beira Alta, the province with Portugal's highest elevation point; Beira Baixa, one of Portugal's poorest regions; Beira Litoral, located in central Portugal along the…

Eckles, David; Toro, Leonor, Ed.

199

Advanced computational methods in lightning performance the EPRI Lightning Protection Design Workstation  

Microsoft Academic Search

In 1992, EPRI (Palo Alto, CA) released a lightning performance simulator for overhead lines, called LPDW (Lightning Protection Design Workstation). The program is based on travelling wave simulation like EMTP, with customizations for lightning analysis, and with interfaces to lightning data collected by the National Lightning Detection Network. The code has been tailored for use by utility engineers, rather than

T. E. McDermott; V. J. Longo

2000-01-01

200

Image-Based Modeling and Rendering Techniques: A Survey  

Microsoft Academic Search

1 Resumo: A recente convergência entre computação gráfica e visão computacional levou à criação de um conjunto de técnicas denominadas modelagem e rendering baseados em imagens (MRBI). Modelagem baseada em imagens se refere ao processo de utilização de imagens para reconstrução de modelos geométricos 3D. Rendering baseado em imagens busca a obtenção de um alto grau de realismo, redução do

Manuel M. Oliveira

2002-01-01

201

Simulation Packages Expand Aircraft Design Options  

NASA Technical Reports Server (NTRS)

In 2001, NASA released a new approach to computational fluid dynamics that allows users to perform automated analysis on complex vehicle designs. In 2010, Palo Alto, California-based Desktop Aeronautics acquired a license from Ames Research Center to sell the technology. Today, the product assists organizations in the design of subsonic aircraft, space planes, spacecraft, and high speed commercial jets.

2013-01-01

202

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

203

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

204

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

Microsoft Academic Search

Volcán San Juan is the westernmost Quaternary composite volcano in the Mexican Volcanic Belt. Its activity is divided into three stages of decreasing eruptive volume. During stage-1 activity, the main cone of San Juan and the adjacent Cerro Alto grew to a combined volume of ?60 km3 through eruption of hornblende-bearing andesites, dacites, and rhyodacites. Stage 1 included explosive eruptions

James F Luhr

2000-01-01

205

Changing climate in the Bolivian Altiplano: CMIP3 projections for temperature and precipitation extremes  

Microsoft Academic Search

Rural agriculture in the Bolivian Altiplano is vulnerable to climate related shocks including drought, frost, and flooding. We examine multimodel, multiscenario projections of eight precipitation and temperature extreme indices for the Altiplano and compute temperature indices for La Paz\\/Alto, covering 1973–2007. Significant increasing trends in observed warm nights and warm spells are consistent with increasing temperatures in the tropical Andes.

J. M. Thibeault; A. Seth; M. Garcia

2010-01-01

206

ESTRESSE, ASPECTOS PSICOSSOCIAIS DO TRABALHO E DISTÚRBIOS MUSCULOESQUELÉTICOS EM TRABALHADORES DE ENFERMAGEM STRESS, PSYCHOSOCIAL ASPECTS OF THE WORK AND MUSCULOSKELETAL DISORDERS IN NURSING WORKERS ESTRÉS, ASPECTOS PSICOSOCIALES DEL TRABAJO Y DISTURBIOS MUSCULOESQUELÉTICOS EN TRABAJADORES DE ENFERMERÍA  

Microsoft Academic Search

RESUMO: RESUMO: RESUMO: RESUMO: RESUMO: A enfermagem é reconhecida como uma das ocupações com alto risco de estresse e adoecimento. Os distúrbios musculoesqueléticos ganham proporção cada vez maior entre esses profissionais. Este estudo tem como objetivo apresentar algumas proposições sobre a relação do estresse e dos fatores psicossociais do trabalho na ocorrên- cia de distúrbio musculoesquelético e caracterizar o Modelo

Tânia Solange; Bosi de Souza; Rosane Harter

207

ANÁLISE COMPARATIVA DA APLICAÇÃO DE REDES NEURAIS E SISTEMAS DE INFERÊNCIA DIFUSA NA PREVISÃO DE NÍVEL DO RIO QUARAÍ UTILIZANDO PREVISÃO DE CHUVA  

Microsoft Academic Search

RESUMO --- Bacias hidrográficas com pequenas dimensões, com características de coeficiente de escoamento alto e tempo de pico curto formam cenários que dificultam a utilização de técnicas tradicionais de previsão de nível. A utilização de previsões hidrometeorologicas permite uma ampliação do tempo disponível entre a previsão e a ocorrência do nível previsto, porém acrescentam muita incerteza nos dados de entrada

Fernando Dornelles; Olavo C. Pedrollo; Joel A. Goldenfum

208

78 FR 10187 - Changes in Flood Hazard Determinations  

Federal Register 2010, 2011, 2012, 2013

...Honorable Public Works http://www.r9map.org/ April 18, 2013............ 060342 Altos Hills (12- Rich Larsen, Department, 26379 Docs/12-09-2859P- 09-2859P). Mayor, Town of Fremont Road, Los 060342-102IAC.pdf....

2013-02-13

209

DISEÑO E IMPLEMENTACIÓN ÓPTIMA DE PERIFÉRICOS DE DSP CON SYSTEM GENERATOR PARA MICROBLAZE  

Microsoft Academic Search

Con este trabajo pretendemos analizar como se lleva a cabo el diseño de periféricos de DSP utilizando uno de los nuevos entornos de diseño de alto nivel: System Generator for DSP. Así, en este documento el objetivo es mostrar por un lado las características del entorno de diseño y las herramientas utilizadas y por otro la metodología de diseño e

J. Viejo; E. Ostua; M. J. Bellido; J. Juan; A. Millan; P. Ruiz-de-Clavijo; D. Guerrero

210

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

211

L'influenza dell'ambiente linguistico nel processo di acquisizione di un lessico bilingue (Influence of the Linguistic Environment on the Process of Acquiring a Bilingual Vocabulary).  

ERIC Educational Resources Information Center

Addresses two questions: (1) When do children who are bilingual from birth become aware that they speak two languages? and (2) What are the factors that lead to this awareness? The subjects in the study described here were Italian/German bilingual children living in the Italian region of Alto Adige. (CFM)

Cavosi, Ricciarda; Taeschner, Traute

1987-01-01

212

In un batter d'occhio... quando per parlare basta una palpebra  

Microsoft Academic Search

Lo sguardo rivolto verso l'alto per comunicare un assenso, le palpebre semi chiuse per esprimere un no, la mente lucida ed acuta imprigionata in un corpo che non risponde ai suoi comandi, una tabella di carta con 21 lettere gialle e verdi e Gabriele diventa \\

Anno Accademico

2004-01-01

213

L'occhio secco  

Microsoft Academic Search

\\u000a Il termine disidratazione è oggi comunemente utilizzato, non solo per indicare le ben note situazioni carenziali di cibo e\\u000a acqua, veri e propri flagelli del mondo in via di sviluppo, ma anche nell'ambito di civiltà e insediamenti ad alto tenore\\u000a industriale e tecnologico.

Massimo Ferrari

214

ALFA: first operational experience of the MPE\\/MPIA laser guide star system for adaptive optics  

Microsoft Academic Search

The sodium laser guide star adaptive optics system ALFA has been constructed at the Calar Alto 3.5m telescope. Following the first detection of the laser beacon on the wavefront sensor in 1997 the system is now being optimized for best performance. In this contribution we discuss the current status of the launch beam and the planned improvements and upgrades. We

Ric I. Davies; Wolfgang K. Hackenberg; T. Ott; Andreas Eckart; Hans-Christoph Holstenberg; S. Rabien; Andreas Quirrenbach; Markus Kasper

1998-01-01

215

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

216

Study of plasmasphere dynamics using incoherent scatter data from Chatanika, Alaska radar facility  

NASA Technical Reports Server (NTRS)

Results of the study of Chatanika incoherent scatter radar data and Lockheed Palo Alto Research Laboratory satellite data are reported. Specific topics covered include: determination of the effective recombination coefficient in the auroral E region; determination of the location of the auroral oval; auroral boundary characteristics; and the relationship of auroral current systems, particle precipitation, visual aurora, and radar aurora.

Shelley, E. G.

1975-01-01

217

Proceedings: Sixth annual EPRI contractors' conference on coal gasification  

Microsoft Academic Search

The Sixth Annual EPRI Contractors' Conference on Coal Gasification was held in Palo Alto on October 15 and 16, 1986. The 200 people in attendance (representing utilities, EPRI contractors, government laboratories and organizations, industry, and academia) reviewed the results of projects and other related topics. Nineteen papers were presented in five general areas: Utility Integrated Coal Gasification Combined Cycle (IGCC

Holt

1987-01-01

218

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

219

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

220

Some aspects of tuning and clean intonation in reed instruments  

Microsoft Academic Search

The influence of the first and second resonance frequencies on tuning, timbre (or tone colour) and ease of playing is investigated for reed instruments, such as the clarinet, alto saxophone and oboe. Theoretical analyses of the effects of the reed and the player embouchure (i.e. lip position and pressure on the reed) are reviewed, as well as the consequences of

J. P. Dalmont; B. Gazengel; J. Gilbert; J. Kergomard

1995-01-01

221

Bacteria of the genus Aeromonas in different locations throughout the process line of beef slaughtering Bactérias do gênero Aeromonas em diferentes pontos do fluxograma de abate bovino  

Microsoft Academic Search

Resumo: Com o objetivo de verificar a ocorrência e a população de bactérias do género Aeromonas em diferentes pontos do fluxo- grama de abate bovino, em estabelecimento de alto nível higiéni- co-sanitário, foram investigados produtos e locais do fluxograma de abate, desde a chegada dos animais até a carne desossada e pronta para comercialização. Das 30 amostras colhidas em cada

CIÊNCIAS VETERINÁRIAS; O. D. Rossi Júnior; L. A. Amaral; A. Nader Filho; R. P. Schocken-Iturrino

222

Proceso y métodos de evaluación integrada participativa de degradación en agroecosistemas semiáridos. Un caso de estudio en un área protegida en el trópico seco nicaragüense  

Microsoft Academic Search

Los procesos de evaluación integrada y participativa son un buen marco metodológico-operativo para la toma de decisiones frente a cuestiones ambientales complejas que conciernen a socio-agroecosistemas de alto dinamismo e impredecibilidad a cambios y con intereses conflictivos de los actores implicados en su gestión. La finalidad del artículo es mostrar el potencial de la aplicación de un enfoque interdisciplinar e

Federica Ravera; David Tarrasón; Pilar Andrés Pastor; Rafael Grasa

2009-01-01

223

Workshop on initiation of stress corrosion cracking under LWR conditions: Proceedings  

Microsoft Academic Search

A workshop titled ''Initiation of Stress Corrosion Cracking under LWR Conditions'' was held in Palo Alto, California on November 13, 1986, hosted by the Electric Power Research Institute. Participants were experts on the topic from nuclear steam supply and component manufacturers, public and private research laboratories, and university environments. Presentations included discussions on the definition of crack initiation, the effects

J. L. Nelson; D. Cubicciotti; G. J. Licina

1988-01-01

224

Nairobi College: Education for Relevance; One Interpretation of the Community Service Function.  

ERIC Educational Resources Information Center

Nairobi College, in East Palo Alto, California, is a school concerned with making education relevant to the ghetto community. The school, founded by students, is taught by community members and serves an area that is approximately 80 per cent black. In nine months Nairobi College has enrolled 120 students; 40 instructors offer 25 courses, which…

Miner, Valerie Jane

225

Compensatory Education? Yes!  

ERIC Educational Resources Information Center

According to the American Institute for Research at Palo Alto, California, Apparently, as the unit of analysis is narrowed from the nation as a whole to states and then to local projects, more signs of positive impact on participating children can be identified.'' (Author)

Webb, Harold H.

1972-01-01

226

Infant and Toddler Experiences.  

ERIC Educational Resources Information Center

Based on experiences gained at the Palo Alto Infant-Toddler Center, this book presents a model of infant and toddler child care. The purpose of the book is to offer caregivers and interested parents a repertoire of ways to respond to infants and toddlers that support individual development. Planned experiences and practical strategies for…

Hast, Fran; Hollyfield, Ann

227

More Infant and Toddler Experiences.  

ERIC Educational Resources Information Center

Based on experiences gained at the Palo Alto Infant-Toddler Center and the view that quality child care for infants and toddlers depends upon nurturing, long-term connections with their caregivers, other children, and their families, this book presents strategies for interacting with young children that support the developing child as well as the…

Hast, Fran; Hollyfield, Ann

228

Schools as Sorters: Testing and Tracking in California, 1910-1925.  

ERIC Educational Resources Information Center

This paper explores the reasons for the rapid adoption of intelligence tests by the public schools, and the historical relationship between testing and ability grouping or tracking. Case studies are presented of three California communities--Oakland, San Jose, and Palo Alto--between 1910 and 1925. These communities have been selected because they…

Chapman, Paul Davis

229

Supplement to Abstracts of Instructional Materials for Career Education.  

ERIC Educational Resources Information Center

As a supplement to a bibliography of career education instructional materials (available as ED 068 627), this publication includes abstracts and indexes of additional instructional materials for career education that were acquired by Palo Alto Educational Systems in a national search under a subcontract with The Center for Vocational and Technical…

Moore, Allen B.

230

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

231

Computer Tutors: An Innovative Approach to Computer Literacy. Part I: The Early Stages.  

ERIC Educational Resources Information Center

In Part I of this two-part article, the author describes the evolution of the Computer Tutor project in Palo Alto, California, and the strategies she incorporated into a successful student-taught computer literacy program. Journal availability: Educational Computer, P.O. Box 535, Cupertino, CA 95015. (Editor/SJL)

Targ, Joan

1981-01-01

232

Some Perplexities of Relational Power.  

ERIC Educational Resources Information Center

This paper advances a relational approach to interpersonal power or social control. Drawing from the work of the Palo Alto group and further elaborations on this work made by S. R. Strong and C. D. Claiborn (1982), the paper outlines the coactive features of interpersonal control and stresses the relevance of these insights for the teaching of…

Brenders, David A.

233

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

234

Plugged In  

NSDL National Science Digital Library

Plugged In is a non-profit group which brings computer-based educational programs to children from low-income communities. Based in East Palo Alto, California, the site contains curriculum materials, online projects by kids and completed multimedia projects by kids.

235

Where to Live: Helping Seniors Find the Answer.  

ERIC Educational Resources Information Center

Home and social services, financial aids, information and referral, counseling, and special housing information for older adults are offered by the Senior Services Center in Palo Alto, California, including a guide to housing and alternative living and a rental housing directory. (MF)

Fuchs, Beverly

1978-01-01

236

Cubberley/Lockheed Science Project Final Report, Volume 1 - Narrative Report. A Development Program to Attain Stated Behavioral Objectives in Science: A System Approach.  

ERIC Educational Resources Information Center

This book represents the final report of the planning phase in the development of an instructional system to be implemented at Cubberley High School in the Palo Alto Unified School District. The purpose of this project is to develop a pilot science learning system in the earth/life sciences. The systems analysis approach was utilized in an attempt…

New York State Psychological Association, Inc., New York.

237

Service Learning in Middle School: The Day from Hell?  

ERIC Educational Resources Information Center

This paper explores the implications of an effort to promote service learning in two middle schools in the Palo Alto (California) Unified School District. The schools are grades six through eight with about 1,000 students in each. The paper describes seven service efforts and then analyzes the costs and benefits of these projects. The study…

Addison-Jacobson, Jill; Addison, Joy

238

THE TEACHER'S HANDBOOK, CHINESE-MANDARIN MATERIALS, LEVELS I-IV.  

ERIC Educational Resources Information Center

THIS TEACHER'S GUIDE EXPLAINS THE ORGANIZATION OF THE AUTHORS' RECENT CHINESE-MANDARIN MATERIALS PUBLISHED IN FOUR VOLUMES BY THE ALTOAN PRESS OF PALO ALTO, CALIFORNIA. THESE MATERIALS WERE WRITTEN FOR HIGH SCHOOL STUDENTS IN THE 9TH TO 12TH GRADES AND ARE PLANNED ACCORDING TO THE MASTER CURRICULUM OF THE ADVISORY COMMITTEE ON CHINESE LANGUAGE…

HSU, KAI-YU; AND OTHERS

239

A School Outside of School.  

ERIC Educational Resources Information Center

At a day school in East Palo Alto, California, Negro preschool children attend classes which offer reading and mathematics instruction. The staff consists of volunteer teachers, most of whom are white and credentialed. The school's enrollment exceeds 200 pupils. Parents are encouraged to participate in the program, and when controversy over…

Goben, Ronald D.

1967-01-01

240

The Case for Programmed Learning.  

ERIC Educational Resources Information Center

This paper discusses ways in which the programmed materials in foreign languages developed by the Behavioral Research Laboratories of Palo Alto, California, can be used. Programmed instruction is recommended here as offering guaranteed comprehensibility, tested efficiency, built-in self-correction, and automatic encouragement. Programmed materials…

Edwards, Margaret H.

241

Investigation of the Public Library as a Linking Agent to Major Scientific, Educational, Social, and Environmental Data Bases. Fifth Progress Report, September 1975 to December 1975.  

ERIC Educational Resources Information Center

In November of 1975, a committee was convened at Lockheed Palo Alto Research Laboratory to examine the utility of computerized data base searching in the public library setting. Participants reviewed an on-going computer retrieval experiment (DIALIB) being conducted in four San Francisco Bay Area public libraries. Librarians reported that since…

Summit, Roger K.; Firschein, Oscar

242

Windows and Mirrors, Stages and Masks: Strategies for the Borderlands.  

ERIC Educational Resources Information Center

The evolution of the programs and curriculum at Palo Alto College (Texas), a community college in which minorities form the majority and nontraditional students are the norm, is described from the perspective of a teacher. Focus is on strategies for acculturating nontraditional students to the culture of the academic classroom. (MSE)

Haecker, Dorothy A.

1996-01-01

243

Counter Culture As Counter Technoversity  

ERIC Educational Resources Information Center

The Stanford Mid-Peninsula Free University (MFU) constitutes the Palo Alto dissident radical's expression of acute disaffection from what Clark Kerr has termed the multiversity. The author presents the goals and philosophies of the members of MFU. (Author/MS)

Heath, G. Louis

1972-01-01

244

Writing Essays on the U.S. History Examination.  

ERIC Educational Resources Information Center

Describes how advanced placement students at Gunn High School (Palo Alto) achieve a higher than average pass rate on the advanced placement final exam required in California. Attributes their success to the focus on expository writing and provides examples of both good and bad essays. (JDH)

Attig, John C.

1987-01-01

245

Employment and Recreation. A Practical Approach to Resources for Teenagers in Group Homes.  

ERIC Educational Resources Information Center

The Caravan House program, the group home for adolescents sponsored by the Palo Alto Adolescent Services Corporation, is described. Included are suggestions for developing a resource file of appropriate recreational and vocational resources. The materials reviewed cover the following areas: (1) group home residents' needs for employment and…

Dupre, Peter; Zivetz, Nancie

246

Peer Counseling: Trained Teenagers Reaching Peers in Human Relations.  

ERIC Educational Resources Information Center

The Palo Alto Peer Counseling program, now finishing its third year of operation, is described. The first year was a pilot year in which the idea was tested and the beginning draft of a curriculum developed. The second year was a developmental year, in which the practicum groups were started as students who had taken the 12-week training the…

Varenhorst, Barbara B.

247

The Nairobi Day School: An African American Independent School, 1966-1984.  

ERIC Educational Resources Information Center

Describes the Nairobi Day School in East Palo Alto (California), an independent African-American institution. Its history is traced from its founding in 1966 to its closing in 1984. The Nairobi method and model are proposed as solutions to several contemporary educational problems that African Americans face in public schools. (SLD)

Hoover, Mary Eleanor Rhodes

1992-01-01

248

Measuring the Outcomes of an Individualized Career Guidance System.  

ERIC Educational Resources Information Center

During the past five years, staff of the American Institute for Research (AIR) in Palo Alto, California have been developing, field testing, and revising a guidance system especially suited to systems of individualized education. A primary aim of AIR's Comprehensive Career Guidance System (CCGS) is to help each student plan wisely for the future.…

Hamilton, Jack A.; And Others

249

Computer Tutors: An Innovative Approach to Computer Literacy. Part II: A Role Model--From the Selection Process to Implementation.  

ERIC Educational Resources Information Center

Describes the selection of hardware and refinement of lesson sets for the Computer Tutor project, a computer literacy program in the Palo Alto schools which uses tutors to teach programing skills to students, staff, and parents. An overview of the program in its second year of operation is included. (JJD)

Targ, Joan

1981-01-01

250

Middle/Junior High School Counselors' Corner  

ERIC Educational Resources Information Center

About 90 students (grades 7 through 12) participated in a peer counseling program in Palo Alto, California. After a 12 week training program that taught communication skills, adolescent concerns, and the strategies and ethics of counseling, students were assigned to small group practicums that met once a week and provided ongoing supervision.…

Varenhorst, Barbara B.

1973-01-01

251

An Analysis of Two Beginning Reading Programs: Some Facts and Some Opinions.  

ERIC Educational Resources Information Center

The instruction provided by two beginning reading programs (the Ginn 720 and the Palo Alto 1973 reading programs) are analyzed and compared in this paper on the basis of such factors as phoneme-grapheme correspondence and phonics instruction, sight word learning, and the development of reading comprehension. The comparison focuses primarily on the…

Beck, Isabel L.; Block, Karen K.

252

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.

253

75 FR 1809 - National Register of Historic Places; Notification of Pending Nominations and Related Actions  

Federal Register 2010, 2011, 2012, 2013

...Motion Picture Theater Buildings in Idaho MPS) 412 2nd Ave., Bovill, 09001280. Cox...Light Stations of the United States MPS) Burma Rd., Fire Island, 09001288...Alto, (Historic Bridges of Puerto Rico MPS) PR 181, km. 5.6, Trujillo...

2010-01-13

254

Effect of Voice-Part Training and Music Complexity on Focus of Attention to Melody or Harmony  

ERIC Educational Resources Information Center

The purpose of this study was to investigate the possible effects of choral voice-part training/experience and music complexity on focus of attention to melody or harmony. Participants (N = 150) were members of auditioned university choral ensembles divided by voice-part (sopranos, n = 44; altos, n = 33; tenors, n = 35; basses, n = 38). The music…

Williams, Lindsey R.

2009-01-01

255

The MOLE Drilling Project: Laboratory at Depth on an Active Fault in Central Italy  

Microsoft Academic Search

Several fundamental questions concerning: i) the geophysical and geochemical processes controlling normal faulting and earthquake ruptures during moderate-to-large seismic events and ii) the low angle normal fault paradox, still need to be fully answered. In this work we aim to present an example of low angle normal fault (Alto Tiberina Fault) located in the Northern Apennines (Italy) showing conclusive evidence

M. Cocco; P. Montone; M. R. Barchi; G. Dresen; M. D. Zoback; M. Mariucci; S. Pierdominici

2007-01-01

256

Los estudios de las dietas alimenticias bajas en grasa, altas en fibra y ricas en frutas y vegetales no revelan efecto alguno en la formación de nuevos pólipos colorrectales en personas con antecedentes de pólipos precancerosos  

Cancer.gov

Dos nuevos estudios sobre el impacto nutricional en personas con alto riesgo de desarrollar cáncer colorrectal no mostraron evidencia de que la dieta afecta la formación de pólipos colorectales precancerosos (pólipos adenomatosos o adenomas) en personas a las que ya se les extrajo un pólipo.

257

Ninth symposium on flue gas desulfurization: proceedings. Volume 1  

Microsoft Academic Search

These proceedings are of the Ninth Symposium on Flue Gas Desulfurization, held June 4 to 7, 1985, at the Netherland Plaza Hotel in Cincinnati, Ohio. The symposium was cosponsored by EPA's Air and Energy Engineering Research Laboratory (formerly Industrial Environmental Research Laboratory), located in Research Triangle Park, North Carolina, and by EPRI's Coal Combustion Systems Division, located in Palo Alto,

F. A. Ayer; A. W. Wallace

1986-01-01

258

Ninth symposium on flue gas desulfurization: proceedings. Volume 2  

Microsoft Academic Search

These proceedings are of the Ninth Symposium on Flue Gas Desulfurization, held June 4 to 7, 1985, at the Netherland Plaza Hotel in Cincinnati, Ohio. The symposium was cosponsored by EPA's Air and Energy Engineering Research Laboratory (formerly Industrial Environmental Research Laboratory), located in Research Triangle Park, North Carolina, and by EPRI's Coal Combustion Systems Division, located in Palo Alto,

F. A. Ayer; A. W. Wallace

1986-01-01

259

WATER RECLAMATION AND AUTOMATED WATER QUALITY MONITORING  

EPA Science Inventory

The Santa Clara Valley Water District owns and operates a water reclamation facility located in the Palo Alto Baylands area in Northern California. The purpose of the facility is to provide reclaimed water suitable for injection into the groundwater, thereby providing a salt wate...

260

Recuento y determinación de viabilidad de Giardia spp. y Cryptosporidium spp. en aguas potables y residuales en la cuenca alta del río Bogotá  

Microsoft Academic Search

Introducción. La transmisión de enfermedades de origen hídrico está relacionada con la contaminación de origen fecal en aguas residuales y potables. Estas enfermedades son causadas por la presencia de bacterias, virus y parásitos, los cuales generan altos porcentajes de morbimortalidad, especialmente, en la población infantil. Se han seleccionado Giardia spp. y Cryptosporidium spp. como organismos indicadores de contaminación de origen

Marlen Andrea Alarcón; Milena Beltrán; Martha Liliana Cárdenas; María Claudia

2005-01-01

261

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

262

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

263

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

264

Constraints on an Optical Afterglow and on Supernova Light Following the Short Burst GRB 050813  

NASA Technical Reports Server (NTRS)

We report early follow-up observations of the error box of the short burst 050813 using the telescopes at Calar Alto and at Observatorio Sierra Nevada (OSN), followed by deep VLT/FORS2 I-band observations obtained under very good seeing conditions 5.7 and 11.7 days after the event. No evidence for a GRB afterglow was found in our Calar Alto and OSN data, no rising supernova component was detected in our FORS2 images. A potential host galaxy can be identified in our FORS2 images, even though we cannot state with certainty its association with GRB 050813. IN any case, the optical afterglow of GRB 050813 was very faint, well in agreement with what is known so far about the optical properties of afterglows of short bursts. We conclude that all optical data are not in conflict with the interpretation that GRB 050813 was a short burst.

Ferrero, P.; Sanchez, S. F.; Kann, D. A.; Klose, S.; Greiner, J.; Gorosabel, J.; Hartmann, D. H.; Henden, A. A.; Moller, P.; Palazzi, E.; Rau, A.; Stecklum, B.; Castro-Tirado, A. J.; Fynbok J. P. U.; Hjorth, J.; Jakobsson, P.; Kouveliotou, C.; Masetti, N.; Pian, E.; Tanvir, N. R.; Wijers, R. A. M. J.

2006-01-01

265

The CARMENES Survey: A Search for Terrestrial Planets in the Habitable Zones of M Dwarfs  

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 under construction for the 3.5 m telescope at the Calar Alto Observatory by a consortium of eleven Spanish and German institutions. The scientific goal of the project is a five-year exoplanet survey targeting 300 M stars with the completed instrument. The CARMENES hardware 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. Both spectrographs are housed in a temperature-stabilized environment in vacuum tanks, to enable a long-term radial velocity precision of 1 m s-1 employing a simultaneous calibration with Th-Ne and U-Ne emission line lamps.

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

2014-04-01

266

CARMENES: A radial-velocity survey for terrestrial planets in the habitable zones of M dwarfs. A historical overview  

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 to be built for the 3.5 m telescope at the Calar Alto Observatory by a consortium of eleven Spanish and German institutions. Conducting a five-year exoplanet survey targeting 300 M dwarfs with the completed instrument is an integral part of the project. The CARMENES instrument consists of two separate echelle 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. The spectrographs are housed in vacuum tanks providing the temperature-stabilized environments necessary to enable a 1 m/s radial velocity precision employing a simultaneous calibration with emission-line lamps.

Amado, P. J.; Quirrenbach, A.; Caballero, J. A.; Mandel, H.; Ribas, I.; Reiners, A.; Sanchez-Carrasco, M. A.; Seifert, W.; Mundt, R.; Carmenes Consortium

2013-05-01

267

An Introduction to Media Space  

NASA Astrophysics Data System (ADS)

In the mid-1980s, Bob Stults and I created the first media space at Xerox Palo Alto Research Center (PARC). From our initial office-to-office always-on real-time audio and video connections grew a switched network of continuous connections for a small laboratory split between Palo Alto, California and Portland, Oregon. Offices and pub¬lic spaces had cameras, microphones, video monitors, and computers. Users were in charge; they could turn their cameras or audio off, or focus cameras out of the window; they could choose to connect to one person or another; however, the underlying connection was always there, with no setup, changeable with a click of a mouse button.

Harrison, Steve

268

The dynamics of expressive piano performance: Schumann's "Träumerei" revisited.  

PubMed

Ten graduate student pianists were recorded playing Robert Schumann's "Träumerei" three times on a Yamaha Disclavier. Their expressive dynamics were analyzed at the level of hammer (MIDI) velocities. Individual dynamic profiles were similar across repeated performances, more so for the right hand (soprano and alto voices) than for the left hand (tenor and bass voices). As expected, the soprano voice, which usually had the principal melody, was played with greater force than the other voices, which gained prominence only when they carried temporarily important melodic fragments. Independent of this voice differentiation, there was a tendency for velocity to increase with pitch, at least in the soprano and alto voices. While there was an overall tendency for velocities to increase with local tempo, there were salient local departures from this coupling. Individual differences in expressive dynamics were not striking and were only weakly related to individual differences in expressive timing. PMID:8675852

Repp, B H

1996-07-01

269

Near-Surface Seismic Images and Geometry of the San Andreas Fault, Santa Cruz Mountains, California  

Microsoft Academic Search

In July 2005, the US Geological Survey and the University of Nevada-Las Vegas acquired a 305-m-long, high-resolution, combined seismic reflection and refraction profile across the San Andreas fault within the Los Trancos Open Space Preserve in Palo Alto, California. The objective of the seismic investigation was to determine the geometry and seismic velocities of the San Andreas fault along a

S. C. Saldana; R. D. Catchings; M. J. Rymer; M. R. Goldman; C. M. Snelson

2005-01-01

270

Metasomatic reaction bands at the Mt. Hochwart gneiss-peridotite contact (Ulten Zone, Italy): insights into fluid-rock interaction in subduction zones  

Microsoft Academic Search

We investigated the contact zone between peridotite lenses and host gneisses located on the northern side of the Hochwart\\u000a peak, also known as Vedetta Alta (Ulten Zone, Alto Adige -Südtirol) where metasomatic contact bands occur. The country rocks\\u000a are gneisses consisting mainly of quartz, K-feldspar, garnet, kyanite, biotite and muscovite. The ultramafic body consists\\u000a of a hectometre-sized garnet peridotite and

M. Marocchi; V. Mair; P. Tropper; G. M. Bargossi

2009-01-01

271

Guest Editor's introduction: Selected papers from the 4th USENIX Conference on Object-Oriented Technologies and Systems  

Microsoft Academic Search

Hewlett-Packard Laboratories, 1501 Page Mill Road, Palo Alto, CA 94304, USA Introduction The USENIX Conference on Object-Oriented Technologies and Systems (COOTS) is held annually in the late spring. The conference evolved from a set of C++ workshops that were held under the auspices of USENIX, the first of which met in 1989. Given the growing diverse interest in object-oriented technologies,

Joe Sventek

1998-01-01

272

AUTOMATIC AERIAL TRIANGULATION - REPORT OF A LARGE PROJECT UNDER DIFFICULT CONDITIONS  

Microsoft Academic Search

The Provincia Autonoma di Bolzano - Alto Adige commissioned the bidding group GEOSIGMA s.r.l., GEOMATICA s.r.l. and Ingenieurgemeinschaft Vermessung AVT-ZT GesmbH to produce a GIS-data base of parts of their province. It was demanded to create topographic data for technical base map in the scales 1:5.000 and 1:10.000. For the data acquisition an existing photo flight of about 2.500 images

S. Dunkel; F. Guzzetti; G. Otepka

273

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

274

Validation of a 26Point Telephone Version of the Mini-Mental State Examination  

Microsoft Academic Search

The objective of this study was to assess the convergent validity of a 26-point Telephone Mini-Mental State Examination (MMSE) in a longitudinal cohort of 46 Alzheimer’s disease (AD) patients. Paired in-person and telephone MMSE observations were collected within 35 days of each other. The setting was the Stanford\\/VA Alzheimer’s Center in Palo Alto, California, and patients’ residences. The 30-point Folstein

Lori A. Newkirk; Janise M. Kim; Jean M. Thompson; Jared R. Tinklenberg; Jerome A. Yesavage; Joy L. Taylor

2004-01-01

275

Sm–Nd isotope systematics and REE data for leucotroctolites and their amphibolitized equivalents of the Niquelândia Complex upper layered series, central Brazil: further constraints for the timing of magmatism and high-grade metamorphism  

Microsoft Academic Search

The Barro Alto, Niquelândia, and Cana Brava Complexes are major Proterozoic layered intrusions in central Brazil that were affected by high-grade metamorphism with associated ductile deformation during the Neoproterozoic (770–795Ma). Recent studies recognized that the Niquelândia Complex comprises two petrologically distinct and tectonically juxtaposed magmatic systems: a younger Upper Layered Series to the west and an older Lower Layered Series

C. F. Ferreira Filho; M. M. Pimentel

2000-01-01

276

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.

277

Characterisation of the CAFOS linear spectropolarimeter  

Microsoft Academic Search

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

F. Patat; S. Taubenberger

2011-01-01

278

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

279

Uranium in surface soils: An easy-and-quick assay combining X-ray diffraction and X-ray fluorescence qualitative data  

Microsoft Academic Search

An environmental concern for uranium-producing countries is the possible dissemination of this radionuclide in soils nearby mineral deposits, even non-exploited ones. This is the case of the Nisa uranium deposit in Alto-Alentejo, East-central Portugal, considered economically impracticable after prospecting efforts that left behind masses of accumulated debris.A first step towards the assessment of uranium retention through adsorption by soil clay

M. O. Figueiredo; T. P. Silva; M. J. Batista; J. Leote; M. L. Ferreira; V. Limpo

2011-01-01

280

Detailed study of Brazil nut (Bertholletia excelsa) oil micro-compounds: phospholipids, tocopherols and sterols  

Microsoft Academic Search

O óleo da castanha-do-pará (Bertholletia excelsa) foi estudado por causa da sua composição em ácidos graxos, tocoferóis, esteróis e fosfolipídios. A composição de ácidos graxos nos fosfolipídeos também foi estudada. Os resultados foram comparados com os do girassol, da castanha, amêndoa, noz, soja e azeites. O seu alto teor em ácidos graxos insaturados, em b-tocoferol e em b-sitosterol confere à

Thavarith Chunhieng; Abdel Hafidi; Daniel Pioch; José Brochier; Didier Montet

2008-01-01

281

PACT: An Experiment in Integrating Concurrent Engineering Systems  

Microsoft Academic Search

The Palo Alto Collaborative Testbed (PACT) is a laboratory for joint experimentation incomputer-aided concurrent engineering being pursued by research groups at Stanford University,Lockheed, Hewlett-Packard, and Enterprise Integration Technologies. The current prototypeintegrates four preexisting concurrent engineering systems into a common framework. Eachindividual system is used to model different aspects of a small robotic manipulator, and toreason about them from a different...

Mark R. Cutkosky; Robert S. Engelmore; Richard E. Fikes; Michael R. Genesereth; Thomas R. Gruber; William S. Mark; Jay M. Tenenbaum; Jay C. Weber

1993-01-01

282

Cambio Climático en Bolivia: Impactos sobre Bosque y Biodiversidad  

Microsoft Academic Search

Bolivia tiene un nivel de biodiversidad extremadamente alto y pocos países del mundo tienen mayor diversidad de ecosistemas que Bolivia, cuyas características geográficas varían en altura (entre 200 y 6000 m.s.n.m), precipitación (entre 200 y 5000 mm\\/año), temperaturas (glacial hasta tropical) y topografía, y por lo tanto en tipos de vegetación. Los principales tipos de ecosistemas son representados en 22

Lykke E. Andersen

2009-01-01

283

1906 Earthquake Scenario: San Francisco Bay Area  

NSDL National Science Digital Library

This map shows estimated Modified Mercalli Intensity (MMI) values for the City of San Francisco and the eight counties of the Greater Bay Area, in a scenario based on the 1906 earthquake along the San Andreas fault. The 430 kilometers of fault rupture included several segments during one massive earthquake. Links are supplied to more detailed maps of the cities of Rohnert Park, Pittsburg, Antioch, San Francisco, and Palo Alto.

284

Polymer concrete: A viable low-cost material for innovative power systems  

Microsoft Academic Search

This paper deals with polymer concrete high voltage insulation, a relatively new family of highly-filled, low-cost, energy-efficient materials which are amenable to precise tailoring for a wide variety of power system applications. First developed in the USA, following pioneering work at Westinghouse, and on Electric Power Research Institute, Palo Alto, California (EPRI) projects, the appeal of polymer concrete has gone

Muthian Gunasekaran

1997-01-01

285

uvby photometry of BH Vir (Clement+ 1997)  

Microsoft Academic Search

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

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

1996-01-01

286

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

Microsoft Academic Search

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 Hbeta monitoring program of

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

1997-01-01

287

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

288

Mars Gravity Anomoly Map  

NASA Technical Reports Server (NTRS)

This is a vertical gravity map of Mars color-coded in mgals based on radio tracking. Note correlations and lack of correlations with the Mars Orbiter Laser Altimeter (MOLA) global topography.

This map was created using MGS data under the direction of Bill Sjogren, a member of the MGS Radio Science Team. The Radio Science Team is led by G. Leonard Tyler of Stanford University in Palo Alto, CA.

2001-01-01

289

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.

290

New binary stars discovered by lunar occultations. V  

NASA Astrophysics Data System (ADS)

We present recent results from our ongoing lunar occultation program on binary stars at the TIRGO and Calar Alto observatories. Observations are presented here for a total of seventeen sources, the majority of which are resolved for the first time. These include SAO 94621, IRAS 18154-1900, SAO 98345, SAO 98363, SAO 93947, SAO 97319, SAO 97437, SAO 94986, SAO 94488, DO 11742, SAO 78027 and SAO 79799. Two speckle binaries were also observed, namely SAO 98427 and SAO 110723; this latter is discovered to be a quadruple system. SAO 77810 is found to be a new triple system. In the cases of SAO 94621 and SAO 98363, we have recorded two occultation light curves each, at different position angles: this allowed us to derive actual position angles and separations for these binary systems. We report an observation of the occultation binary SAO 94961, for which we could not detect the companion. Finally, we report also an observation of the well-studied multiple system SAO 97645 (zeta Cnc), which is discussed in detail in a separate paper. Based on observations collected at TIRGO (Gornergrat, Switzerland), and at Calar Alto (Spain). TIRGO is operated by CNR-CAISMI Arcetri, Italy. Calar Alto is operated by the German-Spanish Astronomical Center.

Richichi, A.; Ragland, S.; Calamai, G.; Richter, S.; Stecklum, B.

2000-09-01

291

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

292

The PANIC software system  

NASA Astrophysics Data System (ADS)

PANIC is the Panoramic Near Infrared Camera for the 2.2m and 3.5m telescopes at Calar Alto observatory. The aim of the project is to build a wide-field general purpose NIR camera. In this paper we describe the software system of the instrument, which comprises four main packages: GEIRS for the instrument control and the data acquisition; the Observation Tool (OT), the software used for detailed definition and pre-planning the observations, developed in Java; the Quick Look tool (PQL) for easy inspection of the data in real-time and a scientific pipeline (PAPI), both based on the Python programming language.

Ibáñez Mengual, José M.; Fernández, Matilde; Rodríguez Gómez, Julio F.; García Segura, Antonio J.; Storz, Clemens

2010-07-01

293

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

294

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

295

Arp 102B spectral optical monitoring (Shapovalova+, 2013)  

NASA Astrophysics Data System (ADS)

Spectra of Arp 102B (during 142 nights) were taken with the 6-m and 1-m telescopes of the SAO RAS (Russia, 1998-2010), the INAOE 2.1-m telescope of the Guillermo Haro Observatory (GHO) at Cananea, Sonora, Mexico (1998-2007), the 2.1-m telescope of the Observatorio Astronomico Nacional at San Pedro Martir (OAN-SPM), Baja California, Mexico (2005-2007), and the 3.5-m and 2.2-m telescopes of Calar Alto observatory, Spain (1987-1994). (4 data files).

Shapovalova, A. I.; Popovic, L. C.; Burenkov, A. N.; Chavushyan, V. H.; Ilic, D.; Kollatschny, W.; Kovacevic, A.; Bochkarev, N. G.; Valdes, J. R.; Torrealba, J.; Patino-Alvarez, V.; Leon-Tavares, J.; Benitez, E.; Carrasco, L.; Dultzin, D.; Mercado, A.; Zhdanova, V. E.

2013-10-01

296

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

297

The Black Mountain asperity - Seismic hazard of the southern San Francisco Peninsula, California  

NASA Technical Reports Server (NTRS)

A slip deficit region running 75 km from Black Mountain south of Palo Alto to San Juan Battista is studied to assess earthquake hazard. If this region were ruptured in its entirety, the event would produce a M-sub-s = 6.9 earthquake. The conditional probability of this rupturing in the near future is the highest of any section of the San Andreas fault except Parkfield. This earthquake would rupture 30 km farther northwest and be about 3 times larger than that previously proposed by others (Lindh, 1983, and Sykes and Nishenko, 1984). This constitutes a greater risk to the southern San Francisco Peninsula than previously expected.

Scholz, C. H.

1985-01-01

298

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.

299

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

300

Spectropolarimetry of SN2014J in M82: another low R(V) event  

NASA Astrophysics Data System (ADS)

We obtained linear spectro-polarimetry of SN2014J in M82 using CAFOS mounted at the 2.2-m telescope at Calar Alto (Spain) on January 28.16 UT. The spectrum covers the wavelength range 3800-8800A, with a resolution of 14A (FWHM). A preliminary analysis of the data shows a marked continuum polarization, reaching about 6.5% in the blue and decreasing to about 2% in the red. We identify the bulk of this polarization as arising in the inter-stellar (IS) medium.

Patat, F.; Taubenberger, S.; Baade, D.; Hoeflich, P.; Maund, J.; Reilly, E.; Spyromilio, J.; Wang, L.; Wheeler, J. C.; Zelaya, P.

2014-01-01

301

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

302

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

303

Stanford on iTunes  

NSDL National Science Digital Library

For those who canâÂÂt make it to the balmy climes of Palo Alto, this latest initiative from Stanford will be most welcome. With this program, visitors can download audio recordings of lectures, poetry readings, and even Stanford football games directly to their computer. Of course, this is no substitute to attending this fine institution, but the wide range of audio content available at no charge is very impressive. This version of Stanford on iTunes is compatible with all computers running Windows XP or 2000 or Mac OS X 10.3.

304

An ultrasonic head position interface for wheelchair control.  

PubMed

To give quadriplegics independent mobility, a "smart" microprocessor-based electric wheelchair has been developed by the Palo Alto Veterans Administration Medical Center and Stanford University. Ultrasound distance-ranging technology is employed to track the user's head position in two-dimensional space. These data are then used to determine the chair's direction and speed. A working prototype vehicle using this type of motion control has been successfully demonstrated. Obstacle detection, wall-following, and cruise control modes are other implemented features of the current design. PMID:7142854

Jaffe, D L

1982-08-01

305

Assessment of an Emerging Technology  

NASA Technical Reports Server (NTRS)

The AIAA's 1979 Lighter-Than-Air (LTA) Systems Technology Conference--the third of the series--was held July 11-13 in Palo Alto, Calif. Highlights of the conference proved to be strong interest in patrol and surveillance airships, particularly for coastal patrol missions, the session devoted to overviews of foreign activity, the luncheon address by Morris B. Jobe, president of Goodyear Aerospace, coincident remarks by RAdm. Manning of the Coast Guard R&D Office and RAdm Seiberlich of the Navy, and presence of the Goodyear advertising airship Columbia.

Ardema, Mark D.

1979-01-01

306

Advanced PANIC quick-look tool using Python  

NASA Astrophysics Data System (ADS)

PANIC, the Panoramic Near Infrared Camera, is an instrument for the Calar Alto Observatory currently being integrated in laboratory and whose first light is foreseen for end 2012 or early 2013. We present here how the PANIC Quick-Look tool (PQL) and pipeline (PAPI) are being implemented, using existing rapid programming Python technologies and packages, together with well-known astronomical software suites (Astromatic, IRAF) and parallel processing techniques. We will briefly describe the structure of the PQL tool, whose main characteristics are the use of the SQLite database and PyQt, a Python binding of the GUI toolkit Qt.

Ibáñez, José-Miguel; García Segura, Antonio J.; Storz, Clemens; Fried, Josef W.; Fernández, Matilde; Rodríguez Gómez, Julio F.; Terrón, V.; Cárdenas, M. C.

2012-09-01

307

Vibrato of saxophones.  

PubMed

Several alto saxophone players' vibratos have been recorded. The signals are analyzed using time-frequency methods in order to estimate the frequency modulation (vibrato rate) and the amplitude modulation (vibrato extent) of each vibrato sample. Some parameters are derived from the results in order to separate the two ways of vibrato playing: vibrato "à la machoire" and vibrato "sur l'air." Moreover, time domain simulations of single-reed instrument vibratos are created. The model is controlled by two parameters: the mouth overpressure and a parameter characterizing the reed-mouthpiece system. Preliminary comments and comparisons between the simulated vibratos and recorded vibratos results are made. PMID:16266184

Gilbert, J; Simon, L; Terroir, J

2005-10-01

308

The 20 x 20 high speed microwave switches  

NASA Technical Reports Server (NTRS)

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.

1984-01-01

309

The chemical composition of the essential oils of Euphorbia caracasana and E. cotinifolia (Euphorbiaceae) from Venezuela.  

PubMed

The essential oils from leaves of E. caracasana Boiss collected from Miyoi, Pueblo Llano, Mérida State at 1800 m above sea level and leaves of E. cotinifolia L collected from Manzano Alto-Ejido, Mérida State at 1520 m were analyzed by GC/MS. Beta-Caryophyllene (33.7 %), alpha-humulene (18.8 %) and aromadendrene (8.4 %) were the major constituents of E. caracasana oil, whereas those of E. cotinifolia oil were beta-caryophyllene (39.3 %), germacrene-D (21.5 %) and alpha-copaene (9.3 %). PMID:19476008

Rojas, Janne; Baldovino, Shirley; Vizcaya, Marietta; Rojas, Luis B; Morales, Antonio

2009-04-01

310

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.

311

Sencha Touch  

Microsoft Academic Search

\\u000a Sencha Touch (www.sencha.com\\/products\\/touch) is a JavaScript framework for creating web applications targeted to touch-based\\u000a devices. Sencha Touch is the flagship product of Sencha (formerly Ext JS), a Palo Alto, Calif. company launched in 2007 that\\u000a makes application frameworks. Sencha Touch combines ExtJS, jQTouch and Raphaël. Unlike jQTouch, Sencha Touch is not dependent\\u000a on jQuery and is compatible with both the

Sarah Allen; Vidal Graupera; Lee Lundrigan

312

Total centralisation and optimisation of an oncology management suite via Citrix®  

NASA Astrophysics Data System (ADS)

The management of patient information and treatment planning is traditionally an intra-departmental requirement of a radiation oncology service. Epworth Radiation Oncology systems must support the transient nature of Visiting Medical Officers (VMOs). This unique work practice created challenges when implementing the vision of a completely paperless solution that allows for a responsive and efficient service delivery. ARIA® and EclipseTM (Varian Medical Systems, Palo Alto, CA, USA) have been deployed across four dedicated Citrix® (Citrix Systems, Santa Clara, CA, USA) servers allowing VMOs to access these applications remotely. A range of paperless solutions were developed within ARIA® to facilitate clinical and organisational management whilst optimising efficient work practices. The IT infrastructure and paperless workflow has enabled VMOs to securely access the VarianTM (Varian Medical Systems, Palo Alto, CA, USA) oncology software and experience full functionality from any location on multiple devices. This has enhanced access to patient information and improved the responsiveness of the service. Epworth HealthCare has developed a unique solution to enable remote access to a centralised oncology management suite, while maintaining a secure and paperless working environment.

James, C.; Frantzis, J.; Ripps, L.; Fenton, P.

2014-03-01

313

Lucky imaging multiplicity studies of exoplanet host stars  

NASA Astrophysics Data System (ADS)

The multiplicity of stars is an important parameter in order to understand star and planet formation. In the past decades extrasolar planets have been discovered around more than 600 stars with the radial velocity and transit techniques. Many of these systems present extreme cases of massive planetary objects at very close separations to their primary stars. To explain the configurations of such systems is hence a continued challenge in the development of formation theories. It will be very interesting to determine if there are significant differences between planets in single and multiple star systems. In our ongoing study we use high resolution imaging techniques to clarify the multiplicity status of nearby (within 250 pc) planet host stars. For targets on the northern hemisphere we employ the lucky imaging instrument Astralux at the 2.2 m telescope of the Calar Alto Observatory. The lucky imaging approach consists of taking several thousand short images with integration times shorter than the speckle coherence time, to sample the speckle variations during the observation window. We then only choose the so called "lucky shots" with a very high Strehl ratio in one of the speckles, to shift and add, resulting in a final image with the highest possible Strehl ratio and therefore highest possible angular resolution. We will present recent results of our study at the Calar Alto Observatory, as well as observations undertaken with the RTK camera at the 20 cm guiding telescope in our own observatory in Großschwabhausen.

Ginski, C.; Mugrauer, M.; Neuhäuser, R.

2014-03-01

314

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

315

PV Cep V(RI)c and IRAC photometry (Kun+, 2011)  

NASA Astrophysics Data System (ADS)

Photometric observations in the VRcIc bands spanning the time interval between 2004 September 22 and 2010 November 23 were performed with six instruments on five telescopes. Most of the data were obtained with the 60/90/180cm Schmidt telescope of the Konkoly Observatory, equipped with a Photometric AT 200 camera, and with the 1-m Ritchey-Chretien- Coude (RCC) telescope of the Konkoly Observatory, equipped with a Princeton Instruments VersArray:1300B camera. PV Cep was also observed with the IAC-80 telescope of the Teide Observatory (Spain) between 2009 October 25 and November 7. In 2008 August and 2009 October we obtained VRI images with the Calar Alto Faint Object Spectrograph (CAFOS) instrument installed on the 2.2-m telescope of the Calar Alto Observatory (Spain). On 2010 April 8 we used the Electro Multiplying (EM) Andor Technology iXonEM+ 888 camera at the RCC telescope of the Konkoly Observatory. (3 data files).

Kun, M.; Szegedi-Elek, E.; Moor, A.; Kospal, A.; Abraham, P.; Apai, D.; Kiss, Z. T.; Klagyivik, P.; Magakian, T. Yu.; Mezo, Gy.; Movsessian, T. A.; Pal, A.; Racz, M.; Rogers, J.

2011-11-01

316

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

317

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.

318

Studying nearby disk galaxies with the CALIFA survey.  

NASA Astrophysics Data System (ADS)

CALIFA, the Calar Alto Legacy Integral Field Area survey, will provide the largest and most comprehensive wide-field IFU survey of galaxies carried out to date, addressing several fundamental issues in galactic structure and evolution. We will observe a statistically well-defined sample of ˜ 600 galaxies in the local universe using 210 observing nights already awarded with the PMAS/PPAK integral field spectrophotometer, mounted on the Calar Alto 3.5m telescope. The definining science drivers for the project are: a) star formation and chemical history of galaxies, b) the physical state of the interstellar medium, c) stellar and gas kinematics in galaxies, and d) the influence of the AGNs on galaxy evolution. The CALIFA project comprises researchers from a large number of institutions worldwide: 8 institutions in Spain, 4 in Germany (CAHA funding countries) and 11 elsewhere, and includes a total of 56 researchers. CALIFA will provide a valuable bridge between large single-aperture surveys such as SDSS and more detailed studies of individual galaxies with PPAK (e.g. PINGS), SAURON, VIRUS-P, and other instruments.

Marino, R. A.; Gil de Paz, A.; Sánchez, S. F.; Castillo-Morales, A.; CALIFA Team

319

Reproductive biology of Echinometra lucunter (Echinodermata: Echinoidea) in a northeast Brazilian sandstone reef.  

PubMed

The edible sea urchin Echinometra lucunter (Linnaeus, 1758) is a very common species on the sublittoral-midlittoral in Brazilian rocky shores. The aim of this work was to describe the gametogenesis and reproductive strategy of the E. lucunter population at Muro Alto beach in the Northeast coast of Brazil from August 2004 to August 2005. A total of 240 specimens were collected on the sandstone reef flat from a tidepool during spring low tides. The overall sex ratio was1.12:1,withoutsignificanttemporalvariationexceptinOctober2004. Firsts sexual maturity ocurred in individuals from a diameter of 20.8 mm. There was not a significant difference in gonad index between females and males during the sampling period. The female's gonad index variation was associated with a well-defined spawning, corroborated by the histological analysis of the gonads, which demonstrates sex differences of the gamete production. By contrast, the males showed no clear pattern. It is suggested that continuous reproduction with seasonal peaks in the E. lucunter population occurs at Muro Alto beach. PMID:19274331

Lima, Eduardo J B; Gomes, Paula B; Souza, José R B

2009-03-01

320

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

321

Preliminary results from two intensive campaigns characterizing urban aerosols at two high altitude cities in the Tropical Andes  

NASA Astrophysics Data System (ADS)

Preliminary results from a short campaign carried out between September and December of 2012 at the cities of El Alto (16°30'36.09"S; 68°11'55.31"W; 4040 masl) and La Paz (16°30'13.83"S; 68° 7'45.56"W; 3580 masl), Bolivia are presented on this work. Particle size distribution was measured using a Mobility Particle Size Spectrometer (Reference of the World Calibration Center for Aerosol Physics) whereas concentration of black carbon was measured using a Multi Angle Absorption Photometer (MAAP). In addition meteorological parameters as well as CO concentration were collected on both locations. In the case of El Alto, the instruments were located within the International Airport of the city at approximately 300 m from the main and only landing strip and at least 1.5 km away from the main roads. On the other hand, in the case of La Paz, the instruments were set up at the Planetarium of University Mayor de San Andres. The building is located besides a road with heavy traffic. Because the two cities are part of the same metropolitan area (the sites were located 7.5 km apart), the cars and trucks produce a similar signature and therefore both background and non-background urban aerosols were sampled during the campaign. In addition, an interesting case was registered at La Paz where a day with practically no vehicular traffic was studied.

Andrade, M. F.; Wiedensohler, A.; Velarde, F.; Moreno, I.; Weinhold, K.; Avila, F.

2013-05-01

322

Loudness and pitch of kunqu opera.  

PubMed

Equivalent sound level (Leq), sound pressure level (SPL), and fundamental frequency (F0) are analyzed in each of five Kunqu Opera roles, Young girl and Young woman, Young man, Old man, and Colorful face. Their pitch ranges are similar to those of some western opera singers (alto, alto, tenor, baritone, and baritone, respectively). Differences among tasks, conditions (stage speech, singing, and reading lyrics), singers, and roles are examined. For all singers, Leq of stage speech and singing were considerably higher than that of conversational speech. Interrole differences of Leq among tasks and singers were larger than the intrarole differences. For most roles, time domain variation of SPL differed between roles both in singing and stage speech. In singing, as compared with stage speech, SPL distribution was more concentrated and variation of SPL with time was smaller. With regard to gender and age, male roles had higher mean Leq and lower average F0, MF0, as compared with female roles. Female singers showed a wider F0 distribution for singing than for stage speech, whereas the opposite was true for male singers. The Leq of stage speech was higher than in singing for young personages. Younger female personages showed higher Leq, whereas older male personages had higher Leq. The roles performed with higher Leq tended to be sung at a lower MF0. PMID:24070593

Dong, Li; Sundberg, Johan; Kong, Jiangping

2014-01-01

323

Subjective Preference of Cellists for the Delay Time of a Single Reflection in a Performance  

NASA Astrophysics Data System (ADS)

To provide knowledge useful in designing the stage enclosure in a concert hall, Nakayama reported the subjective preference of alto-recorder players for sound fields with a single reflection [Acustica54, 217-221 (1984)]. The present study evaluates the subjective preferences, with regard to ease of performance, of five cello soloists for the delay time of a single reflection. The scale values of preference for the delay time of a single reflection were obtained using a paired comparison method, and the results were compared with those for the alto-recorder players and listeners. The scale values of preference for both individuals and for global cellists with regard to the delay time of reflection can be expressed by a single approximate formula, normalizing the delay time by the most-preferred delay time observed for different music motifs. A notable finding is that the most-preferred delay time of a single reflection for each cellist can be calculated from the amplitude of the reflection and the minimum value of the effective duration (?e)minof the running autocorrelation function of the music motifs played by each cellist.

SATO, S.; ANDO, Y.; OTA, S.

2000-04-01

324

CARMENES: Blue planets orbiting red dwarfs  

NASA Astrophysics Data System (ADS)

The CARMENES (Calar Alto high-Resolution search for M dwarfs with Exo-earths with Near-infrared and optical Echelle Spectrographs) consortium, consisting of eleven Spanish and German institutions, has been established to conduct a radial-velocity survey of M dwarfs with the 3.5 m telescope at the Calar Alto Observatory. This survey will target ˜300 M stars, with emphasis on spectral types M4V and later. The CARMENES instrument is currently under construction; it consists of two independent échelle spectrographs covering the wavelength ranges 0.55 …1.05 ?m and 0.95 …1.7 ?m, respectively, at a spectral resolution of R = 82,000. The spectrographs are fed by fibers from the Cassegrain focus of the telescope; calibration is performed simultaneously with emission-line lamps. The optical benches of the spectrographs are housed in vacuum tanks and climatic chambers, which provide the temperature-stabilized environments necessary to enable a 1 m/s radial velocity precision.

Quirrenbach, A.; Amado, P. J.; Caballero, J. A.; Mandel, H.; Mundt, R.; Reiners, A.; Ribas, I.; Sánchez Carrasco, M. A.; Seifert, W.; Azzaro, M.; Galadí, D.; Alonso-Floriano, F. J.; Dreizler, S.; Montes, D.; Rhode, P.; Stürmer, J.

2013-04-01

325

CARMENES. I: instrument and survey overview  

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 for the 3.5m telescope at the Calar Alto Observatory, built by a consortium of eleven Spanish and German institutions. The CARMENES instrument consists of two separate échelle spectrographs covering the wavelength range from 0.55 ?m to 1.7 ?m at a spectral resolution of R = 82, 000, fed by fibers from the Cassegrain focus of the telescope. Both spectrographs are housed in temperature-stabilized vacuum tanks, to enable a long-term 1 m/s radial velocity precision employing a simultaneous calibration with Th-Ne and U-Ne emission line lamps. CARMENES has been optimized for a search for terrestrial planets in the habitable zones (HZs) of low-mass stars, which may well provide our first chance to study environments capable of supporting the development of life outside the Solar System. With its unique combination of optical and near-infrared ´echelle spectrographs, CARMENES will provide better sensitivity for the detection of low-mass planets than any comparable instrument, and a powerful tool for discriminating between genuine planet detections and false positives caused by stellar activity. The CARMENES survey will target 300 M dwarfs in the 2014 to 2018 time frame.

Quirrenbach, Andreas; Amado, Pedro J.; Seifert, Walter; Sánchez Carrasco, Miguel A.; Mandel, Holger; Caballero, Jose A.; Mundt, Reinhard; Ribas, Ignasi; Reiners, Ansgar; Abril, Miguel; Aceituno, Jesus; Alonso-Floriano, Javier; Ammler-von Eiff, Matthias; Anglada-Escude, Guillem; Antona Jiménez, Regina; Anwand-Heerwart, Heiko; Barrado y Navascués, David; Becerril, Santiago; Bejar, Victor; Benitez, Daniel; Cardenas, Concepcion; Claret, Antonio; Colome, Josep; Cortés-Contreras, Miriam; Czesla, Stefan; del Burgo, Carlos; Doellinger, Michaela; Dorda, R.; Dreizler, Stefan; Feiz, Carmen; Fernandez, Matilde; Galadi, David; Garrido, Rafael; González Hernández, Jonay; Guardia, Josep; Guenther, Eike; de Guindos, Enrique; Gutiérrez-Soto, Juan; Hagen, Hans J.; Hatzes, Artie; Hauschildt, Peter; Helmling, Jens; Henning, Thomas; Herrero, Enrique; Huber, Armin; Huber, Klaus; Jeffers, Sandra; Joergens, Viki; de Juan, Enrique; Kehr, M.; Klutsch, Alexis; Kürster, Martin; Lalitha, S.; Laun, Werner; Lemke, Ulrike; Lenzen, Rainer; Lizon, Jean-Louis; López del Fresno, Mauro; López-Morales, Mercedes; López-Santiago, Javier; Mall, Ulrich; Martin, Eduardo; Martín-Ruiz, Susana; Mirabet, Eduard; Montes, David; Morales, Juan Carlos; Morales Muñoz, Rafael; Moya, Andres; Naranjo, Vianak; Oreiro, Raquel; Pérez Medialdea, David; Pluto, Michael; Rabaza, Ovidio; Ramon, Alejandro; Rebolo, Rafael; Reffert, Sabine; Rhode, Petra; Rix, Hans-Walter; Rodler, Florian; Rodríguez, Eloy; Rodríguez López, Cristina; Rodríguez Pérez, Emilio; Rodriguez Trinidad, A.; Rohloff, Ralf-Reiner; Sánchez-Blanco, Ernesto; Sanz-Forcada, Jorge; Schäfer, Sebastian; Schiller, Jörg; Schmidt, Christof; Schmitt, Jürgen; Solano, Enrique; Stahl, Otmar; Storz, Clemens; Stürmer, Julian; Suarez, Juan Carlos; Thiele, Ulrich; Ulbrich, Rainer; Vidal-Dasilva, Manuela; Wagner, Karl; Winkler, Johannes; Xu, Wenli; Zapatero Osorio, Maria Rosa; Zechmeister, Mathias

2012-09-01

326

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

327

Springtime cloud properties in the Taiwan Strait: synoptic controls and local processes  

NASA Astrophysics Data System (ADS)

This paper examines the springtime cloud properties in the Taiwan Strait (TS), with emphases on their dependence on synoptic controls and local processes, using a suite of in situ and remote sensing observations. Cloud properties in the TS are inferred from a combination of MODIS and in situ observations and further classified into two synoptic conditions: continental cold air surge and frontal system. The study reveals a predominance of synoptic-scale controls in regulating the cloud properties in the TS. The sensitivity of clouds to the local thermodynamic mechanisms as well as the underlying surface conditions is fundamentally dependent on synoptic-scale flow patterns. The springtime clouds over the TS are commonly a mixture of stratocumulus and alto clouds. More precisely, there is a preponderance of stratocumulus over the strait. A preferential occupancy of stratiform alto clouds is recognized during cold air surge, whereas vertical development of cloud layers (mostly the stratocumulus) is commonly observed with frontal passage. The most distinct difference between the local clouds formation associated with the two synoptic conditions is the suppression of very low cloud and fog along with cold air surge. Stratus clouds and fog are present within the northward prefrontal airflow from warmer to colder water sites, along with an increase in stability relating to lower altitudes of boundary layer clouds. Although the rainfall occurrences are about the same for both synoptic conditions, the frontal rain amounts are larger on average.

Kueh, Mien-Tze; Lin, Pay-Liam

2014-05-01

328

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

NASA Astrophysics Data System (ADS)

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 to test deposition mechanisms of chemical species that until now were studied only in the climatically-different western sector. We analyzed snow samples collected on Alto dell'Ortles from a 4.5 m snow-pit at 3830 m a.s.l., and we determined a large suite of trace elements and ionic compounds that comprise the atmospheric deposition over the past two years. Trace element concentrations measured in snow samples are extremely low with mean concentrations at pg g-1 levels. Only Al and Fe present median values of 1.8 and 3.3 ng g-1, with maximum concentrations of 21 and 25 ng g-1. The median crustal enrichment factor (EFc) values for Be, Rb, Sr, Ba, U, Li, Al, Ca, Cr, Mn, Fe, Co, Ga and V are lower than 10 suggesting that these elements originated mainly from soil and mineral aerosol. EFc higher than 100 are reported for Zn (118), Ag (135), Bi (185), Sb (401) and Cd (514), demonstrating the predominance of non-crustal depositions and suggesting an anthropogenic origin. Our data show that the physical stratigraphy and the chemical signals of several species were well preserved in the uppermost snow of the Alto dell'Ortles glacier. A clear seasonality emerges from the data as the summer snow is more affected by anthropogenic and marine contributions while the winter aerosol flux is dominated by crustal sources. For trace elements, the largest mean EFc seasonal variations are displayed by V (with a factor of 3.8), Sb (3.3), Cu (3.3), Pb (2.9), Bi (2.8), Cd (2.1), Zn (1.9), Ni (1.8), Ag (1.8), As (1.7) and Co (1.6). When trace species ratios in local and Po Valley emissions are compared with those in Alto dell'Ortles snow, the deposition on Mt. Ortles is clearly linked with Po Valley summer emissions. Despite climatic differences between the Eastern and Western Alps, trace element ratios from Alto dell'Ortles are comparable with those obtained from high-altitude glaciers in the Western Alps, suggesting similar sources and transport processes at seasonal time scales in these two distinct areas. In particular, the large changes in trace element concentrations both in the Eastern and Western Alps appear to be more related to the regional vertical structure of the troposphere rather than the synoptic weather patterns.

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

2011-08-01

329

Tectonics Along Western-Central Part of the Trans Mexican Volcanic Belt as Inferred From Palaeomagnetic Data: A Summary  

NASA Astrophysics Data System (ADS)

The Trans-Mexican Volcanic Belt (TMVB), one of the largest continental volcanic arcs built on the North America plate, spans about 1000 km and crosses central Mexico from the Pacific Ocean to the Gulf of Mexico. The initial stage of the TMVB is marked by widespread Miocene basaltic volcanism, emplaced from the Nayarit state, in the west, to the longitude of Mexico City. This volcanism is characterized by plateau-like structures resulting from the shield volcanoes and fissure lava flows, which have an estimated aggregate volume ranging between 3200 and 6800 km3. The western-central Mexico has been affected by right-lateral transtension within the western TMVB but previous paleomagnetic studies indicate some 15-20° anticlockwise tectonic rotations for the Rio Grande de Santiago canyon and surrounding areas, in accordance with a Miocene left-lateral transtensional tectonic regime. We present a summary of paleomagnetic and rock-magnetic studies of that Miocene volcanic succession from the TMVB. A total of 114 consecutive basaltic lava flows (more than 550 oriented samples) were collected from four localities: Tepic, Guadalajara, Los Altos, and Queretaro which span from 11 to 7.5 Ma. The mean paleodirection obtained for Tepic area is I = 33.7°, D = 358.4°, k = 140, á95 = 3.0°, N = 17. These directions are in perfect agreement with the expected paleodirections for late Miocene time, as derived from reference poles given by Besse and Courtillot (1991) for North America.. The mean paleodirection obtained for Guadalajara is I = 31.1°, D = 354.6°, k = 124, 95 = 2.1°, which corresponds to the mean paleomagnetic pole position Plat = 84°, Plong = 129.8°, k = 29, 95 = 4.4°. These directions are in reasonably good agreement with the expected paleodirections for middle Miocene time. The mean paleomagnetic direction calculated for Los Altos and Queretaro is I = 32.46°, D = 341.2°, k = 7.2 and 95 = 11.6°. Thus, our results suggest that no major block rotation has occurred in the Nayarit and Guadalajara areas since about 10 Ma but 20° anticlockwise tectonic rotations for the Los Altos and Queretro areas is in accordance with the proposed left-lateral transtensional tectonic regime.

Rosas-Elguera, J.; Goguichaisvilli, A.; Alva-Valdivia, L.; Urrutia-Fucugauchi, J.

2007-05-01

330

CARMENES at PPVI. Looking for Exo-Earths around M Dwarfs  

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 3.5 m 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. 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 3.5 m telescope with its own optical fiber. The front end at the telescope Cassegrain focus 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 and two Fabry-Pérot wavemeters for radial-velocity calibration. The spectrographs are mounted on benches inside vacuum tanks located in the coudé laboratory of the 3.5 m dome. Each vacuum tank is equipped with a temperature stabilization system capable of keeping the temperature constant to within ±0.01K over 24 h. The visible-light (VIS) spectrograph will be operated at near room temperature, the near-infrared (NIR) spectrograph will be cooled to 140 K. First light of the VIS channel is planned for January 2015; the NIR channel will arrive early afterwards. At least 600 useable nights have been allocated at the Calar Alto 3.5 m telescope for the CARMENES survey in the time frame from 2015 to 2018.

Quirrenbach, A.; Amado, P. J.; Caballero, J. A.; Seifert, W.; Azzaro, M.; Galadí, D.; García-Vargas, M. L.; Mandel, H.; Mundt, R.; Reiners, A.; Ribas, I.; Pérez-Calpena, A.; Sánchez-Carrasco, M. A.; Carmenes, Consortium

2013-07-01

331

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

332

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

333

Clinical evaluation of a desktop robotic assistant.  

PubMed

A desktop vocational assistant robotic workstation was evaluated by 24 high-level quadriplegics from the Palo Alto Veterans Affairs Spinal Cord Injury Center. The system is capable of performing daily living and vocational activities for individuals with high-level quadriplegia via voice control. Subjects were asked to use the robot to perform a repertoire of daily living activities, including preparing a meal and feeding themselves, washing their face, shaving, and brushing teeth. Pre- and post-test questionnaires, interviews, and observer assessments were conducted to determine the quality of the robot performance and the reaction of the disabled users toward this technology. Results of the evaluations were generally positive and demonstrated the usefulness of this technology in assisting high-level quadriplegics to perform daily activities and to gain a modicum of independence and privacy in their lives. PMID:2754623

Hammel, J; Hall, K; Lees, D; Leifer, L; Van der Loos, M; Perkash, I; Crigler, R

1989-01-01

334

The computational structural mechanics testbed architecture. Volume 2: Directives  

NASA Technical Reports Server (NTRS)

This is the second of a set of five volumes which describe the software architecture for the Computational Structural Mechanics Testbed. Derived from NICE, an integrated software system developed at Lockheed Palo Alto Research Laboratory, the architecture is composed of the command language (CLAMP), the command language interpreter (CLIP), and the data manager (GAL). Volumes 1, 2, and 3 (NASA CR's 178384, 178385, and 178386, respectively) describe CLAMP and CLIP and the CLIP-processor interface. Volumes 4 and 5 (NASA CR's 178387 and 178388, respectively) describe GAL and its low-level I/O. CLAMP, an acronym for Command Language for Applied Mechanics Processors, is designed to control the flow of execution of processors written for NICE. Volume 2 describes the CLIP directives in detail. It is intended for intermediate and advanced users.

Felippa, Carlos A.

1989-01-01

335

Period change in GP And  

NASA Astrophysics Data System (ADS)

GP And is a high amplitude d Scuti type star with V~10.m75, DV~0.m55, P=0.d0787 and spectral type A3 (Lopez de Coca et al. 1990, A & A 83, 51). To study the stability of its fundamental pulsation we have carried out simultaneous uvby photometry of this star in the years 1987 and 1992 at Sierra Nevada and Caltar Alto observatories, both in Spain. Ten new times of light maxima were obtained. In total, forty-one time s of light maxima (from 1973 to 1992, collected from Splittgerber 1976, Mitt. Veraend. Sterne 7, 137; Eggen 1978, IBVS 1517; Gieseking et al. 1979, A & AS 36, 457; Burchi et al. 1992, Mem. Soc. Astron. Ital. 63, 87 and us) were used to determinate the ephemeris of the light curve of GP And by means of the classical O-C method.

Rodriguez, E.; Rolland, A.; Lopez de Coca, P.

1993-05-01

336

Simulations for the future converter of the e-linac for the TRIUMF ARIEL facility  

NASA Astrophysics Data System (ADS)

In the next years, TRIUMF activity will be focused on building a new facility to produce very intense neutron rich radioactive ion beams. Unlike others ISOL facilities, the e-linac primary beam, that will induce the fission, is an intense electron beam (50 MeV energy and 10 mA intensity). This challenging choice, which make this installation unique, despite the ALTO facility, makes an average fission rate of 1013-14fissions/s in the target.This beam is sent on an uranium carbide target (UCx), but due to its power, it is essential to insert a "converter" on the beam path to avoid a target overheating. The purpose of this converter is to convert electrons into Bremsstralhung radiation. The ? rays produce excite the dipole resonance of 23892U (15 MeV) inducing fission. Energy deposition, fission rate and thermal behavior were simulated using Monte Carlo techniques are presented in this paper

Lebois, M.; Bricault, P.

2011-09-01

337

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

338

PANIC: current status  

NASA Astrophysics Data System (ADS)

PANIC, the PAnoramic Near Infrared Camera, is a new instrument for Calar Alto Observatory (CAHA) is a wide-field infraredimager for the CAHA 2.2 m and 3.5 m telescopes. The optics is a folded single optical train, pure lens optics, with a pixel scale of 0.45 arcsec/pixel (18 microns) at the 2.2 m telescope and 0.23 arcsec/pixel at the 3.5 m. A mosaic of four Hawaii-2RG detectorsprovides a field of view (FOV) of 0.5x0.5 degrees and 0.25x0.25 degrees, respectively. It will cover the photometric bandsfrom Z to K_s (0.8 to 2.5 microns) with a low thermal background due to cold stops. Here we present the current status of the project.

Cárdenas, M. C.; Rodríguez Gómez, J.

2011-11-01

339

Pharmacokinetics of amifostine: effects of dose and method of administration.  

PubMed

Findings of pharmacokinetic studies of amifostine (Ethyol; Alza Pharmaceuticals, Palo Alto, CA/US Bioscience, West Conshohocken, PA) in animal models and in human cancer patients support the hypothesis that amifostine pharmacokinetics are nonlinear. The nonlinear pharmacokinetic behavior of amifostine suggests that administration of doses higher than 740 mg/m2 does not increase the amount of drug available due to urinary excretion of the excess parent drug and its metabolites. Although the intravenous formulation of amifostine is the only one currently used in the treatment of cancer patients, there is growing interest in the investigation of subcutaneous administration as a practical alternative. A pilot pharmacokinetic evaluation of subcutaneous administration of amifostine in 12 healthy male volunteers compared the relative bioavailability of 500 mg of amifostine administered subcutaneously with that of 200 mg/m2 given intravenously. PMID:10348258

Shaw, L M; Bonner, H S; Schuchter, L; Schiller, J; Lieberman, R

1999-04-01

340

Calibration of stellar and atmospheric models using the Hyades  

NASA Astrophysics Data System (ADS)

Calibration and benchmarking of evolutionary and atmospheric models is essential for the study of low-mass stars and brown dwarfs, as for isolated objects these models are the only way to determine basic parameters like mass and age. The Hyades star cluster with an age of around 625 Myr and located at the distance of ˜ 45 pc, is the most accessible cluster in the solar neighborhood. \\citet{roe11} establish a list of 724 likely Hyades members. Using available literature data \\citep[HST, HIPPARCOS, WDS;][]{pat98,mer09,mor11} and our own lucky imaging observations with AstraLux at the 2.2m telescope in Calar Alto, we establish a single-star sequence containing 255 Hyades members spanning the mass range ˜ 0.2-1.5 solar masses . This sequence is used for testing and calibration of various existing stellar and atmospheric models (PADOVA, DARTMOUTH, BCAH, BT-Settl).

Kopytova, T. G.; Brandner, W.; Röser, S.; Schilbach, E.; Da Rio, N.

341

Multiplicity in transiting planet-host stars (Lillo-Box+, 2012)  

NASA Astrophysics Data System (ADS)

We present lucky imaging observations for a total of 98 KOIs. This technique is based on the acquisition of thousands of very-short-exposure-time images. A selection and combination of a small amount of the highest quality frames provides a high resolution image with objects having a 0.1 arcsec PSF. We apply this technique to carry out observations in the Sloan i and z filters of our Kepler candidates. The data presented in this paper were taken at the Calar Alto Observatory (Almeria, Spain) during 19 nights of observations divided into three separate runs (6-12 June 2011, 1-10 July 2011, and 25-26 July 2011). (6 data files).

Lillo-Box, J.; Barrado, D.; Bouy, H.

2012-11-01

342

Verification of FANTASTIC integrated code  

NASA Technical Reports Server (NTRS)

FANTASTIC is an acronym for Failure Analysis Nonlinear Thermal and Structural Integrated Code. This program was developed by Failure Analysis Associates, Palo Alto, Calif., for MSFC to improve the accuracy of solid rocket motor nozzle analysis. FANTASTIC has three modules: FACT - thermochemical analysis; FAHT - heat transfer analysis; and FAST - structural analysis. All modules have keywords for data input. Work is in progress for the verification of the FAHT module, which is done by using data for various problems with known solutions as inputs to the FAHT module. The information obtained is used to identify problem areas of the code and passed on to the developer for debugging purposes. Failure Analysis Associates have revised the first version of the FANTASTIC code and a new improved version has been released to the Thermal Systems Branch.

Chauhan, Rajinder Singh

1987-01-01

343

The computational structural mechanics testbed architecture. Volume 1: The language  

NASA Technical Reports Server (NTRS)

This is the first set of five volumes which describe the software architecture for the Computational Structural Mechanics Testbed. Derived from NICE, an integrated software system developed at Lockheed Palo Alto Research Laboratory, the architecture is composed of the command language CLAMP, the command language interpreter CLIP, and the data manager GAL. Volumes 1, 2, and 3 (NASA CR's 178384, 178385, and 178386, respectively) describe CLAMP and CLIP, and the CLIP-processor interface. Volumes 4 and 5 (NASA CR's 178387 and 178388, respectively) describe GAL and its low-level I/O. CLAMP, an acronym for Command Language for Applied Mechanics Processors, is designed to control the flow of execution of processors written for NICE. Volume 1 presents the basic elements of the CLAMP language and is intended for all users.

Felippa, Carlos A.

1988-01-01

344

Ethylene Production during Development of Mustard (Brassica juncea) and Canola (Brassica napus) Seed.  

PubMed

An open, continuous flow system was used to investigate ethylene production during degreening of maturing seed of mustard (Brassica juncea cv Cutlass and cv Lethbridge 22A) and canola (Brassica napus cv Westar and cv Alto). Isolated mustard seed evolved higher amounts of ethylene than those of canola, and this was particularly evident both early in embryogeny and later during the desiccation phase of seed maturation. The silique walls produced negligible amounts of ethylene in both species. The concentrations of ethylene surrounding seed as they matured within siliques were significantly higher in mustard than in canola, and this interspecies difference was greatest during the seed desiccation phase. In mustard, a 4-fold increase in silique internal ethylene levels was apparent during desiccation. In comparison, only a moderate increase in silique-derived ethylene occurred in canola. PMID:12232353

Johnson-Flanagan, A. M.; Spencer, M. S.

1994-10-01

345

Ethylene Production during Development of Mustard (Brassica juncea) and Canola (Brassica napus) Seed.  

PubMed Central

An open, continuous flow system was used to investigate ethylene production during degreening of maturing seed of mustard (Brassica juncea cv Cutlass and cv Lethbridge 22A) and canola (Brassica napus cv Westar and cv Alto). Isolated mustard seed evolved higher amounts of ethylene than those of canola, and this was particularly evident both early in embryogeny and later during the desiccation phase of seed maturation. The silique walls produced negligible amounts of ethylene in both species. The concentrations of ethylene surrounding seed as they matured within siliques were significantly higher in mustard than in canola, and this interspecies difference was greatest during the seed desiccation phase. In mustard, a 4-fold increase in silique internal ethylene levels was apparent during desiccation. In comparison, only a moderate increase in silique-derived ethylene occurred in canola.

Johnson-Flanagan, A. M.; Spencer, M. S.

1994-01-01

346

The effect of two different rooms on acoustical and perceptual measures of SATB choir sound  

NASA Astrophysics Data System (ADS)

The purpose of this study was to explore the effect of two different rooms (choir rehearsal room, performance hall) on acoustical (LTAS, one-third octave bands) and perceptual (singer [N = 11] survey, listener [N = 33] survey, Pitch Analyzer 2.1) measures of soprano, alto, tenor, and bass (SATB) choir sound. Primary findings of this investigation indicated: (a) significant differences in spectral energy comparisons of choir sound between rooms, (b) choristers' perceptions of hearing and monitoring their own voices differed significantly depending on room, (c) most choristers (82%) perceived that the choir performed best within the Performance Hall, (d) perceived pitch of selected sung vowels within recordings differed significantly based on room conditions, (e) 97% of listeners perceived a difference in choir sound between room recordings, and (f) most listeners (91%) indicated preference for the Rehearsal Room recording.

Hom, Kathryn S.

347

Blue stragglers in open clusters. III. NGC 7789  

NASA Astrophysics Data System (ADS)

We performed for the first time a detailed LTE spectroscopic study of a sample of blue straggler stars in the moderately old open cluster NGC 7789. For eight stars the parameters and abundances of several elements were determined. The cluster members show a remarkable surface magnesium deficiency which is quite unusual for late B - early A stars. Iron and titanium abundances are in agreement with other photometric and spectroscopic estimates of the NGC 7789 metallicity. All the confirmed blue stragglers have rather low projected rotational velocities (with one exception for K88, vsin i = 80 km s-1). Based on the spectra collected at Kitt Peak National Observatory, operated by the Association of Universities for Research in Astronomy, Inc., under contract with the National Science Foundation, and at the German-Spanish Astronomical Center, Calar Alto, operated by the Max-Plank Institute for Astronomy, Heidelberg, jointly with the Spanish National Commission for Astronomy.}

Schönberner, D.; Andrievsky, S. M.; Drilling, J. S.

2001-02-01

348

Walt chairs annual meetings  

NASA Astrophysics Data System (ADS)

Two major changes characterize the evolution of the AGU annual meetings, in the eyes of Martin Walt, meetings chairman. Walt, the director of physical sciences at the Lockheed Palo Alto Research Laboratory, was recently appointed meetings chairman for AGU annual meetings through 1982 by AGU President J. Tuzo Wilson. Walt's term will end with the 1982 Fall Meeting in San Francisco; that meeting will be chaired jointly by Walt and his successor.The first change Walt sees is a more businesslike approach to the meetings than when he first attended more than a decade ago. ‘I think people are preparing their talks better now, the session chairmen are more rigorous in keeping to schedule, and the meeting facilities have been improved,’ Walt noted.

Richman, Barbara T.

349

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

350

SANGRE DE CRISTO WILDERNESS STUDY AREA, COLORADO.  

USGS Publications Warehouse

Mineral surveys were undertaken of a wilderness study area which includes most of the Sangre de Cristo Range of south-central Colorado. Four areas of probable mineral-resource potential for gold, silver, and base metals lie along a northwest structural trend which follows the western margin of the range north of the Great Sand Dunes National Monument and crosses the range south of the monument. An area of probable mineral-resource potential for similar minerals plus tungsten has been identified east of Blanca Peak at the extreme southern end of the study area. Another area of probable mineral-resource potential includes molybdenum mineralization associated with the Rito Alto stock. A small area of probable geothermal resource potential exists on the west side of the area around the Valley View Hot Springs. There is little promise for the occurrence of oil and gas resources.

Johnson, Bruce, R.; Ellis, Clarence, E.

1984-01-01

351

Structure of 80Ge revealed by the ? decay of isomeric states in 80Ga: Triaxiality in the vicinity of 78Ni  

NASA Astrophysics Data System (ADS)

The decays of two long-lived low-lying isomeric states of 80Ga were studied at the PARRNe mass separator of the ALTO ISOL facility. Over the 75 ? rays previously attributed to the 80Ga decay, the decay time of 67 individual ?-delayed ? activities were measured. This allowed the determination of the decay time of these two recently reported long-lived—actually ?-decaying—states as well as to partially disentangle the two decay schemes. Thanks to the relatively high spin difference between these two 80Ga isomers spin assignments of the daughter 80Ge states could be further constrained rendering the comparison with calculations easier. From this comparison it appears that the suspected maximum of collectivity at Z=32 along the N=50 line should express itself through the coexistence of spherical and collective ?-soft structures.

Verney, D.; Tastet, B.; Kolos, K.; Le Blanc, F.; Ibrahim, F.; Cheikh Mhamed, M.; Cottereau, E.; Cuong, P. V.; Didierjean, F.; Duchêne, G.; Essabaa, S.; Ferraton, M.; Franchoo, S.; Khiem, L. H.; Lau, C.; Le Du, J.-F.; Matea, I.; Mouginot, B.; Niikura, M.; Roussière, B.; Stefan, I.; Testov, D.; Thomas, J.-C.

2013-05-01

352

Electric Power Research Institute (EPRI) 2005 annual report  

SciTech Connect

The Electric Power Research Institute, with major locations in Palo Alto, California and Charlotte, North Carolina, is an independent, non-profit center for public interest energy and environmental research. The annual report highlights progress during 2005. Projects reported include: plug-in hybrid electric vehicle, intelligent universal transformer; air pollution toxicology research; and Ohio River ecological research. EPRI's Coal Fleet for Tomorrow initiative is described. This has provided the US Congress with an analysis of proposed financial incentives for the Energy Policy Act of 2005 and by developing plant design guidelines for integrated gasification combined cycle power plants. In 2006 the work will be extended to examine combustion systems designed for near-zero emissions. The report outlines EPRI's governance, includes its financial report up to 31 December 2005, and lists its members.

NONE

2006-07-01

353

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

354

Stanford Humanities Center: Events Archive  

NSDL National Science Digital Library

Stanford University invites many distinguished guests to its campus in Palo Alto every year, and the Stanford Humanities Center certainly sees its fair share of those various talented individuals. In the past few years, the Center has worked to make more and more of their talks and lectures available to the general public via this site. The archive dates back to 2003, although the first lecture available online is from 2004. The guests include such figures as New York Times critic Anthony Tommasini, Marina Warner, and Richard Taruskin. For many of the lectures, visitors can play the talk or lecture directly from the site, or they can also download the file directly to their own computer. Additionally, visitors may also wish to check out the Stanford iTunes Podcasts site, as there is a link provided here as well.

355

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

356

Stratigraphical distribution of the Ordovician conodont Erraticodon Dzik in Argentina  

NASA Astrophysics Data System (ADS)

Three different species of the Ordovician genus Erraticodon Dzik are described and illustrated. Erraticodon patu Cooper is reported from the Lower-Midde Ordovician strata of the Acoite and Alto del Cóndor formations. E. cf. Erraticodon balticus and Erraticodon hexianensis from Middle Ordovician carbonate deposits of the San Juan Formation are analyzed and compared to specimens of these species from Australia, China, Newfoundland, and Baltica. E. patu and E. hexianensis are recorded for first time in the San Juan Formation of Precordillera. The elements of E. cf. E. balticus resemble closely E. balticus Dzik but lack the important denticle on the posterior process of the S elements. An evaluation of the stratigraphic occurrences of these species relative to those of key Lower and Middle Ordovician conodont species such as Trapezognathus diprion Lindström, Oepikodus intermedius Serpagli, Baltoniodus triangularis (Lindström), Baltoniodus navis Lindström, Yangtzeplacognathus crassus (Chen and Zhang) and Eoplacognathus pseudoplanus (Viira) indicates they value for biostratigraphic correlation.

Heredia, S.; Carlorosi, J.; Mestre, A.; Soria, T.

2013-08-01

357

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.

358

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

359

GOES-K solar panel inspection at Astrotech  

NASA Technical Reports Server (NTRS)

Space Systems/LORAL employees inspect solar panels for the GOES-K weather satellite in the Astrotech facility at Titusville, Fla., as they begin final testing of the imaging system, communications and power systems of the spacecraft. The GOES-K is the third spacecraft to be launched in the new advanced series of geostationary weather satellites for the National Oceanic and Atmospheric Administration (NOAA). The GOES-K is built for NASA and NOAA by Space Systems/LORAL of Palo Alto, Calif. The launch of the satellite from Launch Pad 36B at Cape Canaveral Air Station on an Atlas 1 rocket (AC-79) is currently planned for Apr. 24 at the opening of a launch window which extends from 1:56 to 3:19 a.m. EDT.

1997-01-01

360

The computational structural mechanics testbed architecture. Volume 5: The Input-Output Manager DMGASP  

NASA Technical Reports Server (NTRS)

This is the fifth of a set of five volumes which describe the software architecture for the Computational Structural Mechanics Testbed. Derived from NICE, an integrated software system developed at Lockheed Palo Alto Research Laboratory, the architecture is composed of the command language (CLAMP), the command language interpreter (CLIP), and the data manager (GAL). Volumes 1, 2, and 3 (NASA CR's 178384, 178385, and 178386, respectively) describe CLAMP and CLIP and the CLIP-processor interface. Volumes 4 and 5 (NASA CR's 178387 and 178388, respectively) describe GAL and its low-level I/O. CLAMP, an acronym for Command Language for Applied Mechanics Processors, is designed to control the flow of execution of processors written for NICE. Volume 5 describes the low-level data management component of the NICE software. It is intended only for advanced programmers involved in maintenance of the software.

Felippa, Carlos A.

1989-01-01

361

Lockheed Solar Observatory and the Discovery of Moreton-Ramsey Waves  

NASA Astrophysics Data System (ADS)

Moreton Waves are high-speed disturbances seen traveling away from large solar flares in H-alpha movies of the solar chromosphere. They were discovered by the observer Harry Ramsey in the late 1950s, and then published and publicized by the director Gail Moreton, both of the Lockheed Solar Observatory in the Hollywood Hills of Southern California. These efforts established the scientific reputation and secured continuing funding of the observatory, whose present-day successor is the Lockheed Martin Solar and Astrophysics Lab in Palo Alto. Moreton waves are rare, and there was limited interest in them until the EIT instrument on SOHO began seeing large numbers of similar waves in the corona in the late 1990s. The exact relation between the two observations is still a research topic today. This talk will describe some of the history of the observatory and the discovery and early interpretation of the waves.

Tarbell, Theodore D.

2014-06-01

362

The computational structural mechanics testbed architecture. Volume 2: The interface  

NASA Technical Reports Server (NTRS)

This is the third set of five volumes which describe the software architecture for the Computational Structural Mechanics Testbed. Derived from NICE, an integrated software system developed at Lockheed Palo Alto Research Laboratory, the architecture is composed of the command language CLAMP, the command language interpreter CLIP, and the data manager GAL. Volumes 1, 2, and 3 (NASA CR's 178384, 178385, and 178386, respectively) describe CLAMP and CLIP and the CLIP-processor interface. Volumes 4 and 5 (NASA CR's 178387 and 178388, respectively) describe GAL and its low-level I/O. CLAMP, an acronym for Command Language for Applied Mechanics Processors, is designed to control the flow of execution of processors written for NICE. Volume 3 describes the CLIP-Processor interface and related topics. It is intended only for processor developers.

Felippa, Carlos A.

1988-01-01

363

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

364

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

365

An assessment of the Tongonan geothermal reservoir, Philippines, at high-pressure operating conditions  

SciTech Connect

An evaluation of the Tongonan geothermal reservoir was conducted to improve the power recovery through reservoir and process optimization. The performance of the existing production wells was reviewed and the response of the field based on the anticipated production levels was simulated at various operating conditions. The results indicate that the Tongonan geothermal reservoir can be exploited at a high pressure operating condition with substantial improvement in the field capacity. The authors calculate that the Upper Mahiao and the Malitbog sectors of the Tongonan field are capable of generating 395 MWe at 1.0 MPa abs., on top of the existing 112.5 MWe plant, compared with 275 MWe if the field is operated at 0.6 MPa abs. The total capacity for the proposed Leyte A 640 MWe expansion can be generated from these sectors with the additional power to be tapped from Mahanagdong and Alto Peak sectors.

Sarmiento, Z.F.; Aquino, B.G.; Aunzo, Z.P.; Rodis, N.O.; Saw, V.S. [PNOC-Energy Development Corp., Fort Bonifacio (Philippines)] [PNOC-Energy Development Corp., Fort Bonifacio (Philippines)

1993-10-01

366

A non-conventional procedure for the 3D modeling of WWI forts  

NASA Astrophysics Data System (ADS)

2014 is the hundredth anniversary of the outbreak of the First World War (WWI) - or Great War - in Europe and a number of initiatives have been planned to commemorate the tragic event. Until 1918, the Italian Trentino - Alto Adige region was under the Austro - Hungarian Empire and represented one of the most crucial and bloody war front between the Austrian and Italian territories. The region borders were constellated of military fortresses, theatre of battles between the two opposite troops. Unfortunately, most of these military buildings are now ruined and their architectures can be hardly appreciated. The paper presents the initial results of the VAST project (VAlorizzazione Storia e Territorio - Valorization of History and Landscape), that aims to digitally reconstruct the forts located on the plateaus of Luserna, Lavarone and Folgaria. An integrated methodology has been adopted to collect and employ all possible source of information in order to derive precise and photo-realistic 3D digital representations of WWI forts.

Nocerino, E.; Fiorillo, F.; Minto, S.; Menna, F.; Remondino, F.

2014-06-01

367

Practical approach to modal basis selection and wavefront estimation  

NASA Astrophysics Data System (ADS)

The MPIA/MPE adaptive optics with a laser guide star system ALFA works excellent with natural guide stars up to 13th magnitude in R-band. Using fainter natural guide stars or the extended laser guide star, ALFA's performance does not entirely satisfy our expectations. We describe our efforts in optimizing the wavefront estimation process. Starting with a detailed system analysis, this paper will show how to construct a modal basis set which efficiently uses Shack- Hartmann measurements while keeping a certain number of low order modes close to analytical basis sets like Zernikes or Karhunen-Loeve functions. We will also introduce various phase estimators (least squares, weighted least squares, maximum a posteriori) and show how these can be applied to the ALFA AO. A first test done at the Calar Alto 3.5-m-telescope will be discussed.

Kasper, Markus E.; Looze, Douglas P.; Hippler, Stefan; Feldt, Markus; Weiss, Robert; Glindemann, Andreas; Davies, Richard I.

2000-07-01

368

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.

369

CCD photometry and astrometry for visual double and multiple stars of the HIPPARCOS catalogue. I. Presentation of the large scale project  

NASA Astrophysics Data System (ADS)

A description is given of the activities of an international working group created with the aim of obtaining both photometric and astrometric observations of visual double and multiple stars with angular separations in the range of one to fifteen arcseconds, that formed part of the HIPPARCOS Input Catalogue. The scientific aims and realisations of this European network are given. About 50 observational missions have been carried out in both hemispheres according to a pre-defined protocol. We describe the general and specifically designed methods used for the reduction of large amounts of CCD observations of double stars and give an outline of the results already presented and soon to be expected. Based on observations made at La Silla (ESO, Chile - Key Programme 7-009-49 K), Observatoire de Haute-Provence (OHP), Calar Alto (CLA), La Palma (LPL) and Jungfraujoch (JFJ) Observatories}

Oblak, E.; Lampens, P.; Cuypers, J.; Halbwachs, J. L.; Martín, E.; Seggewiss, W.; Sinachopoulos, D.; van Dessel, E. L.; Chareton, M.; Duval, D.

1999-06-01

370

Exoplanets: light curves with different telescopes  

NASA Astrophysics Data System (ADS)

In this poster contribution we present photometric results of the exoplanet WASP-1b with different filters in the 80 cm IAC80 telescope at the Observatorio del Teide (Canary Islands, Spain), as part of an observation campaign of the Robotic Telescopes Group at Centro de Astrobiologia (CAB) in October 2008. After that, we compare the previous light curves with the ones obtained by our group using the INTA-CAB 50 cm robotic telescope located at Calar Alto Observatory (Almeria, Spain). We indicate the photometric accuracy obtained for each case (2 mmag in the first case and 3 mmag in the second one). Finally, we point out how the studies carried out by our robotic telescope can/must be complemented with the use of other astronomical facilities.

Ullan, A.; Eibe, M. T.; Cuesta, L.; Perez-Verde, A.; Navas, J.

2011-11-01

371

Vibrational mode shapes in Caribbean steelpans. I. Tenor and double second.  

PubMed

Vibrational mode shapes have been studied in several tenor (soprano range) and double-second (alto range) steelpans by three well-known makers. Normal modes are determined from operating deflection shapes recorded by means of electronic TV holography. Vibrational modes of the various note areas are designated by the number of radial and circumferential nodal lines. Tuners generally tune one mode an octave above the fundamental and, if possible, a third mode is tuned either a twelfth or two octaves above the fundamental. Note dimensions follow an approximate scaling law L=Kf(213), and the larger note areas can be roughly modeled as rectangular plates with simply supported edges. Modal shapes in the skirt correspond to standing bending waves propagating around the ring. PMID:10955647

Rossing, T D; Hansen, U J; Hampton, D S

2000-08-01

372

Introduction to the computational structural mechanics testbed  

NASA Technical Reports Server (NTRS)

The Computational Structural Mechanics (CSM) testbed software system based on the SPAR finite element code and the NICE system is described. This software is denoted NICE/SPAR. NICE was developed at Lockheed Palo Alto Research Laboratory and contains data management utilities, a command language interpreter, and a command language definition for integrating engineering computational modules. SPAR is a system of programs used for finite element structural analysis developed for NASA by Lockheed and Engineering Information Systems, Inc. It includes many complementary structural analysis, thermal analysis, utility functions which communicate through a common database. The work on NICE/SPAR was motivated by requirements for a highly modular and flexible structural analysis system to use as a tool in carrying out research in computational methods and exploring computer hardware. Analysis examples are presented which demonstrate the benefits gained from a combination of the NICE command language with a SPAR computational modules.

Lotts, C. G.; Greene, W. H.; Mccleary, S. L.; Knight, N. F., Jr.; Paulson, S. S.; Gillian, R. E.

1987-01-01

373

CARMENES at PPVI. High-Resolution Spectroscopy of M Dwarfs with FEROS, CAFE and HRS  

NASA Astrophysics Data System (ADS)

To ensure an efficient use of CARMENES observing time, and the highest chances of success, it is necessary first to select the most promising targets. To achieve this, we are observing ~500 M dwarfs at high-resolution (R = 30,000-48,000), from which we determine the projected rotational velocity vsini with an accuracy better than 0.5-0.2 km/s and radial-velocity stability better than 0.2-0.1 km/s. Our aim is to have at least two spectra at different epochs of the final 300 CARMENES targets. Our observations with FEROS at ESO/MPG 2.2m La Silla , CAFE at 2.2m Calar Alto and HRS at Hobby Eberly Telescope allow us to identify single- and double-line spectroscopic binaries and, especially, fast rotators, which should be discarded from the target list for exoplanet searches. Here we present preliminary results.

Alonso-Floriano, F. J.; Montes, D.; Jeffers, S.; Caballero, J. A.; Zechmeister, M.; Mundt, R.; Reiners, A.; Amado, P. J.; Casal, E.; Cortés-Contreras, M.; Modroño, Z.; Ribas, I.; Rodríguez-López, C.; Quirrenbach, A.

2013-07-01

374

Downstream evolution of turbulence from heated screens: Experimental and analytical results  

SciTech Connect

This report discusses recent efforts to characterize the flow and density nonuniformities downstream of heated screens placed in a uniform flow. The Heated Screen Test Facility (HSTF) at Sandia National Laboratories and the Lockheed Palo Alto Flow Channel (LPAFC) were used to perform experiments over wide ranges of upstream velocities and heating rates. Screens of various mesh configurations were examined, including multiple screens sequentially positioned in the flow direction. Diagnostics in these experiments included pressure manometry, hot-wire anemometry, interferometry, Hartmann wavefront slope sensing, and photorefractive schlieren photography. A model was developed to describe the downstream evolution of the flow and density nonuniformities. Equations for the spatial variation of the mean flow quantities and the fluctuation magnitudes were derived by incorporating empirical correlations into the equations of motion. Numerical solutions of these equations are in fair agreement with previous and current experimental results.

O'Hern, T.J.; Shagam, R.N.; Neal, D.R.; Suo-Anttila, A.J.; Torczynski, J.R.

1993-02-01

375

CARMENES. II: optical and opto-mechanical design  

NASA Astrophysics Data System (ADS)

CARMENES is a fiber-fed high-resolution échelle spectrograph for the Calar Alto 3.5m telescope. The instrument is built by a German-Spanish consortium under the lead of the Landessternwarte Heidelberg. The search for planets around M dwarfs with a radial velocity accuracy of 1 m/s is the main focus of the planned science. Two channels, one for the visible, another for the near-infrared, will allow observations in the complete wavelength range from 550 to 1700 nm. To ensure the stability, the instrument is working in vacuum in a thermally controlled environment. The optical design of both channels of the instrument and the front-end, as well as the opto-mechanical design, are described.

Seifert, W.; Sánchez Carrasco, M. A.; Xu, W.; Cárdenas, M. C.; Sánchez-Blanco, E.; Becerril, S.; Feiz, C.; Ramón, A.; Dreizler, S.; Rohde, P.; Quirrenbach, A.; Amado, P. J.; Ribas, I.; Reiners, A.; Mandel, H.; Caballero, J. A.

2012-09-01

376

COMET-AR User's Manual: COmputational MEchanics Testbed with Adaptive Refinement  

NASA Technical Reports Server (NTRS)

The COMET-AR User's Manual provides a reference manual for the Computational Structural Mechanics Testbed with Adaptive Refinement (COMET-AR), a software system developed jointly by Lockheed Palo Alto Research Laboratory and NASA Langley Research Center under contract NAS1-18444. The COMET-AR system is an extended version of an earlier finite element based structural analysis system called COMET, also developed by Lockheed and NASA. The primary extensions are the adaptive mesh refinement capabilities and a new "object-like" database interface that makes COMET-AR easier to extend further. This User's Manual provides a detailed description of the user interface to COMET-AR from the viewpoint of a structural analyst.

Moas, E. (Editor)

1997-01-01

377

No link yet, but EMF studies continue  

SciTech Connect

The Edison Electric Institute (EEI) reports that the electric utility industry spent $10 million in 1994 on electric and magnetic fields (EMF) research conducted by the Electric Power Research Institute based in Palo Alto, California. To date, the electric utility industry has contributed close to $80 million since the 1970s. The U.S. Department of Energy (DOE) will administer an interagency EMF program in 1995 called RAPID (the Research and Public Information Dissemination program). It is a five-year, $65 million effort by DOE and the National Institute of Environmental Health Sciences (NIEHS). Some research elements are already under way. Congress has appropriated $8 million for the program in fiscal year (FY) `95. EEI member companies will contribute $4 million for FY`95 (compared to $3.2 million in FY`94) and are committed to contributing $16.5 million over the next five years.

NONE

1995-05-01

378

Vivid View of Tycho's Supernova Remnant  

NASA Technical Reports Server (NTRS)

This composite image of the Tycho supernova remnant combines infrared and X-ray observations obtained with NASA's Spitzer and Chandra space observatories, respectively, and the Calar Alto observatory, Spain. It shows the scene more than four centuries after the brilliant star explosion witnessed by Tycho Brahe and other astronomers of that era.

The explosion has left a blazing hot cloud of expanding debris (green and yellow). The location of the blast's outer shock wave can be seen as a blue sphere of ultra-energetic electrons. Newly synthesized dust in the ejected material and heated pre-existing dust from the area around the supernova radiate at infrared wavelengths of 24 microns (red). Foreground and background stars in the image are white.

2008-01-01

379

A Multiwavelength Approach to the Star Formation in the Orion's Head Complex  

NASA Astrophysics Data System (ADS)

The O8 III star Lambda Orionis is the dominant object in the Orion's Head Star Forming Region. It includes at least five individual regions with different ages and evolutionary stages. The oldest of them, Collinder 69, is located at the center and is about 5 Myr old. We have carried out a comprehensive study of the region, including X-ray, optical, near-infrared, and mid-IR using different ground-based and space observatories (Calar Alto and La Palma in Spain; Magellan and VLT in Chile; Subaru and Keck in Hawaii; and Akari, XMM-Newton and Spitzer in orbit). This wealth of data has been used to study a number of properties, namely the membership and the Initial Mass Function, accretion and circunstellar disk evolution and brown dwarf population. The central cluster has been used as a study case for a new VO-compliant tool.

Barrado Y Navascués, D.; Morales-Calderón, M.; Bayo, A.; Huélamo, N.; Bouy, H.; Stelzer, B.; Stauffer, J. R.

2009-08-01

380

CARMENES. V. M dwarfs in multiple systems  

NASA Astrophysics Data System (ADS)

With the help of CARMENCITA, the CARMENES Cool dwarf Information and daTa Archive (see SEA poster by Caballero et al.), we investigate the membership in double, triple or higher-order multiplicity systems of more than 1300 of the brightest, latest M dwarfs in the solar neighbourhood observable from Calar Alto. We use data compiled from the literature and measured by us. Angular separations range from a few tenths of arcseconds to several arcminutes, which translate into a very wide interval of projected physical separations. Studying M dwarfs in multiple systems provides information on a wealth of topics, e.g. from dynamical masses, through distance and metallicity, to the formation and evolution of weakly bound systems.

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

2013-05-01

381

Lotung downhole array. 1: Evaluation of site dynamic properties  

SciTech Connect

The Lotung large-scale seismic test (LSST) site in Taiwan was instrumented in 1985 with an array of downhole and surface accelerometers, by the Electric Power Research Institute (EPRI), Palo Alto, California, and the Taiwan Power Company (TPC), Taipei, Taiwan. A total of 18 earthquakes were recorded during the period 1985--86. Correlation and spectral analyses of the recorded downhole accelerations are performed to evaluate shear wave propagation characteristics, variation of shear wave velocity with depth, and site resonant frequencies and modal configurations. A shear-beam model, calibrated by the identified site properties, is found to represent the site dynamic response characteristics over a wide frequency range. In a companion paper, strong-motion earthquake records are utilized to investigate the Lotung site large-strain soil response characteristics.

Elgamal, A.W.; Zeghal, M. [Rensselaer Polytechnic Inst., Troy, NY (United States). Civil and Environmental Engineering Dept.] [Rensselaer Polytechnic Inst., Troy, NY (United States). Civil and Environmental Engineering Dept.; Tang, H.T. [Electric Power Research Inst., Palo Alto, CA (United States)] [Electric Power Research Inst., Palo Alto, CA (United States); Stepp, J.C. [Earthquake Hazards Solutions, Austin, TX (United States)] [Earthquake Hazards Solutions, Austin, TX (United States)

1995-04-01

382

A decision-theoretic approach to the display of information for time-critical decisions: The Vista project  

NASA Technical Reports Server (NTRS)

We describe a collaborative research and development effort between the Palo Alto Laboratory of the Rockwell Science Center, Rockwell Space Operations Company, and the Propulsion Systems Section of NASA JSC to design computational tools that can manage the complexity of information displayed to human operators in high-stakes, time-critical decision contexts. We shall review an application from NASA Mission Control and describe how we integrated a probabilistic diagnostic model and a time-dependent utility model, with techniques for managing the complexity of computer displays. Then, we shall describe the behavior of VPROP, a system constructed to demonstrate promising display-management techniques. Finally, we shall describe our current research directions on the Vista 2 follow-on project.

Horvitz, Eric; Ruokangas, Corinne; Srinivas, Sampath; Barry, Matthew

1993-01-01

383

Attitudes of Bolivian pharmacists in dealing with diarrhea cases.  

PubMed

To help learn about the recommendations made by Bolivian pharmacists dealing with diarrhea cases, 498 pharmacies in three Bolivian cities (Cochabamba, El Alto, and La Paz) were visited by female interviewers who indicated they were seeking treatment for a child with diarrhea. Ninety-eight of the Cochabamba pharmacies were also visited by a male interviewer who indicated he was suffering from diarrhea and was seeking treatment. In response, fewer than 2% of the pharmacists recommended using oral rehydration salts (ORS), increasing fluid intake, or consulting a physician. Most recommended antimicrobials, antidiarrheals, or some combination of the two. At 329 (66%) of the pharmacies, oral rehydration salts were unavailable, and those that did have such salts rarely offered them to customers. At the time of the survey, pharmacists were not integrated into the Bolivian National Health Secretariat's training program for control of diarrheal diseases. Steps have since been taken to resolve this matter. PMID:8605523

Zamora Gutiérrez, A D; Aguilar Liendo, A M; Cordero Valdivia, D

1995-12-01

384

The computational structural mechanics testbed architecture. Volume 4: The global-database manager GAL-DBM  

NASA Technical Reports Server (NTRS)

This is the fourth of a set of five volumes which describe the software architecture for the Computational Structural Mechanics Testbed. Derived from NICE, an integrated software system developed at Lockheed Palo Alto Research Laboratory, the architecture is composed of the command language CLAMP, the command language interpreter CLIP, and the data manager GAL. Volumes 1, 2, and 3 (NASA CR's 178384, 178385, and 178386, respectively) describe CLAMP and CLIP and the CLIP-processor interface. Volumes 4 and 5 (NASA CR's 178387 and 178388, respectively) describe GAL and its low-level I/O. CLAMP, an acronym for Command Language for Applied Mechanics Processors, is designed to control the flow of execution of processors written for NICE. Volume 4 describes the nominal-record data management component of the NICE software. It is intended for all users.

Wright, Mary A.; Regelbrugge, Marc E.; Felippa, Carlos A.

1989-01-01

385

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

386

Palynology as an age-control tool for ice cores. First results of PAMOGIS - Pollen Analyses of the Mt. Ortles Glacier Ice Samples  

NASA Astrophysics Data System (ADS)

Glacier ice cores from the mid latitude are capable of retaining essential information on past climate, environmental and human activities on a seasonal/annual time resolution. However, for a correct interpretation of the ice record a good chronological control is essential. Absolute time markers such as 3H peaks and Sahara dust horizons, together with radiometric methods such as 210Pb, radiocarbon from carbonaceous aerosol particles and AMS-dating are commonly used to obtain the age depth model of ice cores. In this frame we present the first pollen-based chronology from the Eastern Alps. Results of pollen analyses performed on a 10 m firn core taken on the top of Alto dell'Ortles Glacier (3905 m a.s.l.) will be discussed. Palynological data are compared and complemented with stable isotopes, major ions and trace elements analyses. Based on the single species flowering periods, our results show that the pollen spectrum presents seasonal and inter-annual variability that enables to distinguish snow accumulated in the three different flowering seasons and winter snow. According to these four components a seasonal and annual chronology was established, proving that the 10 m firn core encompasses four years of snow accumulation and presents a clear seasonal palynological signal. These first results reveal the potential of pollen content of glacier snow and ice as a chronological tool that can contribute to the construction of a robust chronological model with a seasonal to annual resolution. This study is the first step and the base for future research on deeper ice cores on the Alto dell'Ortles Glacier (Ortles project: www.ortles.org).

Festi, Daniela; Kofler, Werner; Gabrielli, Paolo; Oeggl, Klaus

2014-05-01

387

Preliminary optical design of PANIC, a wide-field infrared camera for CAHA  

NASA Astrophysics Data System (ADS)

In this paper, we present the preliminary optical design of PANIC (PAnoramic Near Infrared camera for Calar Alto), a wide-field infrared imager for the Calar Alto 2.2 m telescope. The camera optical design is a folded single optical train that images the sky onto the focal plane with a plate scale of 0.45 arcsec per 18 ?m pixel. A mosaic of four Hawaii 2RG of 2k x 2k made by Teledyne is used as detector and will give a field of view of 31.9 arcmin x 31.9 arcmin. This cryogenic instrument has been optimized for the Y, J, H and K bands. Special care has been taken in the selection of the standard IR materials used for the optics in order to maximize the instrument throughput and to include the z band. The main challenges of this design are: to produce a well defined internal pupil which allows reducing the thermal background by a cryogenic pupil stop; the correction of off-axis aberrations due to the large field available; the correction of chromatic aberration because of the wide spectral coverage; and the capability of introduction of narrow band filters (~1%) in the system minimizing the degradation in the filter passband without a collimated stage in the camera. We show the optomechanical error budget and compensation strategy that allows our as built design to met the performances from an optical point of view. Finally, we demonstrate the flexibility of the design showing the performances of PANIC at the CAHA 3.5m telescope.

Cárdenas, M. C.; Rodríguez Gómez, J.; Lenzen, R.; Sánchez-Blanco, E.

2008-08-01

388

LONG-TERM MONITORING OF COMET 103P/HARTLEY 2  

SciTech Connect

We report the spectrophotometric, photometric, and imaging monitoring results of comet 103P/Hartley 2 obtained at the Lulin (1 m), Calar Alto (2.2 m), and Beijing Astronomical (2.16 m) observatories from 2010 April to December. We found that a dust feature in the sunward direction was detected starting from the end of September until the beginning of December (our last observation from the Lulin and Calar Alto observatories). Two distinct sunward jet features in the processed images were observed on October 11 and after October 29 until November 2. In parallel, the CN images reveal two asymmetrical jet features which are nearly perpendicular to the Sun-nucleus direction, these asymmetrical features imply that the comet was in a nearly side-on view in late October and early November. In addition to the jet features, the average result of the C{sub 2}-to-CN production rate ratio ranges from 0.7 to 1.5, consistent with 103P/Hartley 2 being of typical cometary chemistry. We found that the r{sub h} dependence for the dust production rate, Af{rho} (5000 km), is -3.75 {+-} 0.45 before perihelion and -3.44 {+-} 1.20 during the post-perihelion period. We detected higher dust reddening around the optocenter and decreased reddening along the sunward jet feature. We concluded that higher dust reddening could be associated with strong jet activity while lower dust reddening could be associated with the outburst or might imply changes in the optical properties. The average dust color did not appear to vary significantly as the comet passed through perihelion.

Lin, Z.-Y.; Ip, W.-H. [Institute of Astronomy, National Central University, Jhongli City, Taoyuan County 32001, Taiwan, Taiwan (China); Lara, L. M., E-mail: zylin@astro.ncu.edu.tw, E-mail: lara@iaa.csic.es [Instituto de Astrofisica de Andalucia (CSIC), Glorieta de la Astronomia s/n, ES-18008 Granada (Spain)

2013-07-01

389

The ALHAMBRA Survey: Bayesian photometric redshifts with 23 bands for 3 deg  

NASA Astrophysics Data System (ADS)

The Advance Large Homogeneous Area Medium-Band Redshift Astronomical (ALHAMBRA) survey has observed eight different regions of the sky, including sections of the Cosmic Evolution Survey (COSMOS), DEEP2, European Large-Area Infrared Space Observatory Survey (ELAIS), Great Observatories Origins Deep Survey North (GOODS-N), Sloan Digital Sky Survey (SDSS) and Groth fields using a new photometric system with 20 optical, contiguous ˜300-Å filters plus the JHKs bands. The filter system is designed to optimize the effective photometric redshift depth of the survey, while having enough wavelength resolution for the identification of faint emission lines. The observations, carried out with the Calar Alto 3.5-m telescope using the wide-field optical camera Large Area Imager for Calar Alto (LAICA) and the near-infrared (NIR) instrument Omega-2000, represent a total of ˜700 h of on-target science images. Here we present multicolour point-spread function (PSF) corrected photometry and photometric redshifts for ˜438 000 galaxies, detected in synthetic F814W images. The catalogues are complete down to a magnitude I ˜ 24.5 AB and cover an effective area of 2.79 deg2. Photometric zero-points were calibrated using stellar transformation equations and refined internally, using a new technique based on the highly robust photometric redshifts measured for emission-line galaxies. We calculate Bayesian photometric redshifts with the Bayesian Photometric Redshift (BPZ)2.0 code, obtaining a precision of ?z/(1 + zs) = 1 per cent for I < 22.5 and ?z/(1 + zs) = 1.4 per cent for 22.5 < I < 24.5. The global n(z) distribution shows a mean redshift = 0.56 for I < 22.5 AB and = 0.86 for I < 24.5 AB. Given its depth and small cosmic variance, ALHAMBRA is a unique data set for galaxy evolution studies.

Molino, A.; Benítez, N.; Moles, M.; Fernández-Soto, A.; Cristóbal-Hornillos, D.; Ascaso, B.; Jiménez-Teja, Y.; Schoenell, W.; Arnalte-Mur, P.; Povi?, M.; Coe, D.; López-Sanjuan, C.; Díaz-García, L. A.; Varela, J.; Stefanon, M.; Cenarro, J.; Matute, I.; Masegosa, J.; Márquez, I.; Perea, J.; Del Olmo, A.; Husillos, C.; Alfaro, E.; Aparicio-Villegas, T.; Cerviño, M.; Huertas-Company, M.; Aguerri, J. A. L.; Broadhurst, T.; Cabrera-Caño, J.; Cepa, J.; González, R. M.; Infante, L.; Martínez, V. J.; Prada, F.; Quintana, J. M.

2014-07-01

390

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

391

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

392

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

393

XMS and NG1dF: extreme multiplex spectrographs for wide-field multi-object spectroscopy  

NASA Astrophysics Data System (ADS)

Two feasibility studies for spectrographs that can deliver at least 4000 MOS slits over a 1° field at the prime focuses of the Anglo-Australian and Calar Alto Observatories have been completed. We describe the design and science case of the Calar Alto eXtreme Multiplex Spectrograph (XMS) for which an extended study, half way between feasibility study and phase-A, was made. The optical design is quite similar than in the AAO study for the Next Generation 1 degree Field (NG1dF) but the mechanical design of XMS is quite different and much more developed. In a single night, 25000 galaxy redshifts can be measured to z~0.7 and beyond for measuring the Baryon Acoustic Oscillation (BAO) scale and many other science goals. This may provide a low-cost alternative to WFMOS for example and other large fibre spectrographs. The design features four cloned spectrographs which gives a smaller total weight and length than a unique spectrograph to makes it placable at prime focus. The clones use a transparent design including a grism in which all optics are about the size or smaller than the clone rectangular subfield so that they can be tightly packed with little gaps between subfields. Only low cost glasses are used; the variations in chromatic aberrations between bands are compensated by changing a box containing the grism and two adjacent lenses. Three bands cover the 420nm to 920nm wavelength range at 10A resolution while another cover the Calcium triplet at 3A. An optional box does imaging. We however also studied different innovative methods for acquisition without imaging. A special mask changing mechanism was also designed to compensate for the lack of space around the focal plane. Conceptual designs for larger projects (AAT 2º field, CFHT, VISTA) have also been done.

Content, Robert; Barden, Sam; Becerril, Santiago; Boehm, Armin; Clark, Paul; Costillo, Pedro; Dubbeldam, C. Mark; Farrell, Tony; Glazebrook, Karl; Haynes, Roger; Meisenheimer, Klaus; Miziarski, Stan; Nikoloudakis, Nikolaos; Prada, Luis Francisco; Rohloff, Ralf-Rainer; Shanks, Tom; Sharples, Ray M.; Wagner, Karl

2010-07-01

394

Studying nearby disk galaxies with the CALIFA survey  

NASA Astrophysics Data System (ADS)

CALIFA, the Calar Alto Legacy Integral Field Area survey, will provide the largest and most comprehensive wide-field IFU survey of galaxies carried out to date, combining the advantages of imaging and spectroscopy we will able to understand the origin for the observed diversity of galaxies, and the physical mechanisms -intrinsic and environmental- that are responsible for the differences as well as similarities between them. We will observe a statistically well-defined sample of ˜ 600 galaxies in the local universe (0.005 < z < 0.03) using 210 observing nights already awarded with the PMAS/PPAK integral field spectrophotometer, mounted on the Calar Alto 3.5 m telescope. PPAK offers a combination of extremely wide field-of-view (> 1 arcmin^2) with a high filling factor in one single pointing (65%), good spectral resolution, and wavelength sensitivity across the optical spectrum. The spectra will be covering the range 3700-7000 Å in two overlapping setups, one in the red (4300-7000 Å) at a spectral resolution of R ˜ 1000 and one in the blue (3700-5000 Å) at R ˜ 2000. The fully reduced and flux calibrated data of this legacy survey will be made available to the public. Some of definining science drivers for the CALIFA project are the star formation and the chemical history of galaxies; the study of the physical state of the interstellar medium; improve our knowledge on the stellar and gas kinematics in galaxies, and understand the influence of the AGNs on galaxy evolution. The CALIFA project comprises researchers from a large number of institutions worldwide: 8 institutions in Spain, 4 in Germany (CAHA funding countries) and 11 elsewhere, and includes a total of 56 researchers. CALIFA will provide a valuable bridge between large single-aperture surveys such as SDSS and more detailed studies of individual galaxies with PPAK (e.g. PINGS), SAURON, VIRUS-P, and other instruments.

Marino, R. A.; Gil de Paz, A.; Sánchez, S. F.; Castillo-Morales, A.

2011-11-01

395

A new high altitude paleoclimate record from the first ice core drilled in the eastern European Alps: preliminary results  

NASA Astrophysics Data System (ADS)

Low latitude ice cores offer unique and detailed paleoclimate information from high elevations. Multiple proxies synchronized within the same ice medium offer the possibility to precisely link past climate variations to changes in the surrounding ecosystems and human activities, providing a unique paleo-geographic perspective of the Earth system. However, as most of the accessible low latitude drilling sites have already been exploited and as glaciers are melting worldwide, it is difficult to identify ice fields that contain novel and intact ice core records. We drilled the first ice cores to bedrock in the eastern European Alps during autumn 2011. These cores were extracted from the Alto dell'Ortles glacier (3859 m, South Tyrol, Italy) and their length was up to 75 m. The firn-ice transition was found at ~30 m depth. Below the temperate firn portion, cold ice layers sitting on frozen bedrock still exist and represent remnants from the colder climate before ~1980 AD. Analysis of beta emissions and tritium indicate the well-known 1963 peak (originating from radioactive nuclear fallout) to be at 41 m depth. Together with a measured density profile, this allows us to estimate an average accumulation rate of ~ 850 mm of water equivalent per year during the last 50 years. This confirms this drilling site as one with the lowest snow accumulation rate in the Alps, potentially containing older ice than most of the other Alpine glaciers. Preliminary analyses reveal that the deep and cold ice layers of this glacier preserve clearly distinguishable annual variations in stable isotopes, dust and major ions that can be precisely dated. Alto dell'Ortles is the first low-accumulation alpine drilling site where both winter and summer layers can be clearly identified. Application of a conventional flow model and preliminary annual layer counting suggest that the high altitude records contained in these ice cores may span at least several centuries.

Gabrielli, P.; Barbante, C.; Carturan, L.; Davis, M. E.; Dalla Fontana, G.; Dinale, R.; Dragà, G.; Gabrieli, J.; Kehrwald, N. M.; Mair, V.; Mikhalenko, V.; Oeggl, K.; Schotterer, U.; Seppi, R.; Thompson, L. G.; Tonidandel, D.

2012-12-01

396

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

397

Evaluation of artificial recharge in the Mojave River Ground-Water Basin, California  

USGS Publications Warehouse

The Mojave River Basin relies almost entirely on ground water to meet the needs of its growing population and agriculture, which has resulted in overdraft conditions. Some of the ground-water management alternatives being proposed to mitigate the effects of overdraft include artificial recharge using water from the California State Water Project (SWP) and using SWP water in lieu of ground-water pumpage. A calibrated ground-water flow model was used to evaluate six proposed water-management alternatives using SWP water during a 20-year simulation period, 2000-2019, using constant rates from 1999 for recharge and pumpage (with the exception of recharge derived from Mojave River streamflows which were variable). The measured streamflow for the period of 1970-1989 was used to simulate the Mojave River streamflow. Water-management alternative 1 assumed that none of the Mojave Water Agency allocation of SWP water was available for mitigation measures and resulted in increases in hydraulic head in the floodplain aquifer in years of above-average streamflow (2008-2010, 2013) and decreases in years of below average streamflow. In general, simulated hydraulic heads in the regional aquifer declined with the exception of the El Mirage and Harper Lake areas. Also, average storage depletion for the entire ground-water basin over the 20-year simulation was 40,940 acre-feet per year. Water-management alternative 2 assumed that 30,000 acre-feet per year of SWP water was artificially recharged at Rock Springs Road Outlet (RSO). By 2019, the simulated hydraulic heads were as much as 75 feet higher in the Alto at the recharge site, 24 feet higher in the Transition zone, 15 feet higher in the Centro, and 17 feet higher in the Baja model subareas than the hydraulic heads resulting from water-management alternative 1. Water-management alternative 2 affected simulated hydraulic heads by as much as 5 feet in an area totalling 290 square miles; most of the change occurred in the Alto and Baja model subareas. Average storage depletion for water-management alternative 2 for the entire ground-water basin for the 20-year simulation period was 15,880 acre-feet per year, 25,060 acre-feet per year less than water-management alternative 1. Also, water-management alternative 2 indicated that the artificial recharge at RSO resulted in less simulated ground-water recharge from stream leakage in the Alto model subarea, which led to greater streamflow at the Lower Narrows, Barstow, and Afton Canyon streamflow gages. This increased streamflow resulted in an increase in simulated ground-water recharge from stream leakage, primarily in the Centro and Baja model subareas. Water-management alternative 3 assumed that 4,000 acre-feet per year of SWP water was artificially recharged at Manzanita and Oro Grande Washes (a total of 8,000 acre-feet per year) in the Alto model subarea. By 2019, the simulated hydraulic heads beneath the recharge sites were as much as 278 feet higher than heads resulting from water-management alternative 1. Changes in simulated hydraulic head greater than 5 feet covered almost 138 square miles in the Alto model subarea. Water-management alternative 3 had little effect on simulated hydraulic heads in the other model subareas. Model results indicated that the average storage depletion for the entire ground-water basin during the 20-year simulation was 32,940 acre-feet per year, about 8,000 acre-feet per year less than water-management alternative 1. Water-management alternative 3 had essentially no effect on simulated streamflows during the 20-year simulation period and, therefore, little effect on simulated net stream leakage. Water-management alternative 4 assumed 10,000 acre-feet per year of SWP water was artificially recharged near Newberry Springs in the Baja subarea. By 2019, the simulated hydraulic heads beneath the recharge site were as much as 193 ft higher in the Baja model subarea than the hydraulic heads res

Stamos, Christina L.; Martin, Peter; Predmore, Steven K.

2002-01-01

398

Minerals and trace elements in silcretes of the Sado basin (Alentejo, southern Portugal) and implications for silcrete formation  

NASA Astrophysics Data System (ADS)

Soils in the eastern part of the Sado basin (southern Portugal) are often characterized by massive cementations caused by silica. The thickness and massive character of these silcretes led to the hypothesis that accumulation of silica took place not only vertically within a soil profile, but also by enrichment through lateral water and element flow into the Sado basin. The aims of the study reported here were: 1) to characterize the cementing agent with regard to its mineralogy; 2) to test the hypothesis that silification was enhanced through lateral silica transport from the adjacent Alto Alentejo into the Sado basin. Aim 1) was achieved by scratching silica coatings from ped surfaces of the silicified soil horizons and cleaning them manually in the lab under a binocular microscope. After careful smashing with a mortar, density separation by sodium polytungstate solution was applied to remove any remaining mineral grains from the silica samples. The cleaned silica samples were then subjected to XRD and SEM in combination with EDS. Aim 2) was attained by using trace element contents of predominant rock types of the Alto Alentejo and of the silcretes in the Sado basin for identifying lateral pathways of water and silica in the landscape. Ten rock samples from the assumed source area of silica were combusted by fusion melt, and their contents of Ba, Co, Cs, Nb, Pb, Rb, Sr, Y and Zr were analyzed by ICP-MS. The same elements were analyzed in NaOH extracts of the cemented soil horizons in the Sado basin. The X-ray diagrams of the silica coatings show the expected broad hump of amorphous silica. In addition, quartz, kaolinite, and surprisingly high amounts of halloysite are identified, the latter reflecting conditions of intensive weathering and pedogenesis during the formation of the silica coatings. This intensive soil formation and hence silification most likely took place during Pliocene. Greater age is impossible, because the silification took place in Pliocene sediments; later, on the other hand, the climate became cooler, hence intensity of pedogenesis should have decreased. It is assumed that halloysite was preserved over such long period of time, because it was occluded in the silica mass. The micromorphology of the coatings under the SEM includes laminar coverings, banded and alveolar structures. EDS analysis shows that the coatings consist mainly of silicon; in addition they contain aluminum and some also have minor amounts of iron. Trace element contents of the rock samples and silcretes enabled tracing lateral silica flows from the Alto Alentejo into the Sado basin. Some rock samples and silcretes contained considerable amounts of Barium. Even barite crystals were observed in the silica coatings under the SEM. Acknowledgement The authors thank Beate Podtschaske for her valuable help in the laboratory and the German Research Foundation DFG for financial support (project STA 146/45-3).

Sauer, Daniela; Kullmann, Sarah; Zarei, Mehdi; Stahr, Karl

2014-05-01

399

A high altitude paleoclimate record from an ice core retrieved at the northern margin of the Mediterranean basin  

NASA Astrophysics Data System (ADS)

Atmospheric temperatures in the Alps are increasing at twice the global rate and this change may be amplified at the highest elevations. There is a scarcity of paleo-climate information from high altitudes to place this current rapid climate change in a paleo-perspective. The 'Ortles Project' is an international scientific effort gathering institutes from six nations with the primary goal of obtaining a high altitude paleo-climate record in the Mediterranean area. In 2011 four ice cores were extracted from Alto dell'Ortles (3859 m, South Tyrol, Italy) the highest glacier in the eastern Alps. This site is located ~30 km away from where the famous ~5.2 kyr old Tyrolean Ice Man was discovered emerging from an ablating ice field (Hauslabjoch, 3210 m) in 1991. The good state of conservation of this mummy suggested that the current warming trend is unprecedented in South Tyrol during the late Holocene and that unique prehistoric ice was still present in this region. During the ice core drilling operations we found that the glacier Alto dell'Ortles shows a very unusual thermic behavior as it is transitioning from a cold to a temperate state. In fact, below a 30 meter thick temperate firn portion, we observed cold ice layers sitting on a frozen bedrock (-2.8 C). These represent remnants of the colder climate before ~1980 AD, when an instrumental record indicates a ~2 C lower temperature in this area during the period 1864-1980 AD. By analyzing one of the Ortles cores for stable isotopes, dust and major ions, we found an annually preserved climatic signal embedded in the deep cold ice of this glacier. Alto dell'Ortles is therefore the first low-accumulation (850 mm w.e. per year) alpine drilling site where both winter and summer layers can be identified. Preliminary annual layer counting and two absolute time markers suggest that the time period covered by the Ortles ice cores spans from several centuries to a few millennia. In particular, a Larix (larch) leaf discovered at 74 m depth suggests a 14C bottom ice age of 2664 ×166 years (early European Iron Age) supporting the idea that exceptional prehistoric ice is still present at the highest elevations of South Tyrol. Here we present the records of the first Ortles core analyzed in terms of ?18O (proxy of mid-tropospheric temperature), major ions and dust. We found that ?18O measured in the shallowest layers of this glacier exceeds the average deeper values indicating that the Ortles cores capture the recent increase in atmospheric temperatures at high elevation and that this is anomalous over a time scale that extends from hundreds to thousands of years.

Gabrielli, P.; Barbante, C.; Carturan, L.; Davis, M. E.; Dalla Fontana, G.; Dreossi, G.; Dinale, R.; Draga, G.; Gabrieli, J.; Kehrwald, N. M.; Mair, V.; Mikhalenko, V.; Oeggl, K.; Schotterer, U.; Seppi, R.; Spolaor, A.; Stenni, B.; Thompson, L. G.; Tonidandel, D.

2013-12-01

400

Infrared to millimetre photometry of ultra-luminous IR galaxies: New evidence favouring a 3-stage dust model  

NASA Astrophysics Data System (ADS)

Infrared to millimetre spectral energy distributions (SEDs) have been obtained for 41 bright ultra-luminous infrared galaxies (ULIRGs). The observations were carried out with ISOPHOT between 10 and 200 mu m and supplemented for 16 sources with JCMT/SCUBA at 450 and 850 mu m and with SEST at 1.3 mm. In addition, seven sources were observed at 1.2 and 2.2 mu m with the 2.2 m telescope on Calar Alto. These new SEDs represent the most complete set of infrared photometric templates obtained so far on ULIRGs in the local universe. The SEDs peak at 60-100 mu m and show often a quite shallow Rayleigh-Jeans tail. Fits with one single modified blackbody yield a high FIR opacity and small dust emissivity exponent beta < 2. However, this concept leads to conflicts with several other observational constraints, like the low PAH extinction or the extended filamentary optical morphology. A more consistent picture is obtained using several dust components with beta = 2, low to moderate FIR opacity and cool (50 K > T > 30 K) to cold (30 K > T > 10 K) temperatures. This provides evidence for two dust stages, the cool starburst dominated one and the cold cirrus-like one. The third stage with several hundred Kelvin warm dust is identified in the AGN dominated ULIRGs, showing up as a NIR-MIR power-law flux increase. While AGNs and SBs appear indistinguishable at FIR and submm wavelengths, they differ in the NIR-MIR. This suggests that the cool FIR emitting dust is not related to the AGN, and that the AGN only powers the warm and hot dust. In comparison with optical and MIR spectroscopy, a criterion based on the SED shapes and the NIR colours is established to reveal AGNs among ULIRGs. Also the possibility of recognising evolutionary trends among the ULIRGs via the relative amounts of cold, cool and warm dust components is investigated. Based on observations with the Infrared Space Observatory ISO, the James Clerk Maxwell Telescope JCMT, the Swedish ESO Submillimetre Telescope SEST and at the Calar Alto Observatory. ISO is an ESA project with instruments funded by ESA Member States (especially the PI countries France, Germany, The Netherlands and the UK) and with the participation of ISAS and NASA. Appendices A and B are only available in electronic form at http://www.edpsciences.com

Klaas, U.; Haas, M.; Müller, S. A. H.; Chini, R.; Schulz, B.; Coulson, I.; Hippelein, H.; Wilke, K.; Albrecht, M.; Lemke, D.

2001-12-01

401

Application of CloudSat cloud classification maps and MODIS multi-spectral satellite imagery in identifying false rain from satellite images  

NASA Astrophysics Data System (ADS)

In recent years, the emergence of various satellite-based precipitation products with high spatial resolutions and global coverage has resulted in new sources of uninterrupted precipitation estimates. However, due to lack of information on the associated uncertainties and reliability of these products, they are not well integrated into operational and decision making applications. Comparing in-situ rain measurements with satellite precipitation data reveals considerable false alarm in satellite precipitation measurements in the presence of high cold clouds. In this study, application of multi-spectral satellite imagery from MODIS and CloudSat cloud classification maps is investigated to identify false rain detection in satellite precipitation products (e.g., PERSIANN). Moderate Resolution Imaging Spectroradiometer (MODIS) instrument aboard NASA Earth Observing System Aqua and Terra platform with 36 spectral bands provides valuable information about cloud microphysical characteristics. Additionally, CloudSat, a NASA Earth Sciences Systems Pathfinder (ESSP) mission, is designed to measure vertical structure of clouds from space. The CloudSat radar flies in formation with Aqua with only an average of about 60 s delay. The availability of cloud classes based on CloudSat CLDCLASS product together with multi-spectral capabilities of MODIS makes it possible to create a training data set to distinguish different types of clouds based on their radiances. The training data set is employed to identify high non-precipitating clouds such as cirrus and alto-stratus and remove false precipitation signals in PERSIANN satellite precipitation product. Based on the training data (July 10, 2008 until Sept 10, 2008) more than 12000 single layer cloudy pixels with their spectral characteristics are investigated. In this data set the brightness temperature difference of 8.5 and 11 micrometer channels (BTD[8.5-11]) for cirrus and altos-stratus clouds are more than 2K and 1K respectively. Both of these types of clouds are non-precipitating high that are often miss identified as light rain in the PERSIANN infrared based precipitation algorithm. Finding all pixels with BTD[8.5-11] greater than 1K, the non-precipitating high clouds can be identifies and the estimated precipitation can be removed from the precipitation algorithm. The results suggest a significant improvement in detecting non-precipitating clouds and reducing false precipitation in comparison with radar-based gauge adjusted data over the United States.

Nasrollahi, N.; Hsu, K.; Sorooshian, S.

2011-12-01

402

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

403

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

404

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

NASA Astrophysics Data System (ADS)

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 large suite of trace elements and ionic compounds that comprise the atmospheric depositions over the past few years. Trace element concentrations measured in snow samples are extremely low with mean concentrations at pg g-1 level. Only Al and Fe present median values of 1.8 and 3.3 ng g-1, with maximum concentrations of 21 and 25 ng g-1. The median EFc values for Be, Rb, Sr, Ba, U, Li, Al, Ca, Cr, Mn, Fe, Co, Ga and V are lower than 10 suggesting that these elements originated mainly from soil and mineral aerosol. EFc higher than 100 are reported for Zn (118), Ag (135), Bi (185), Sb (401) and Cd (514), demonstrating the predominance of non-crustal depositions and suggesting an anthropogenic origin. Our data show that the physical stratigraphy and the chemical signals of several species were well preserved in the uppermost snow of the Alto dell'Ortles glacier. A clear seasonality emerges from the data as the summer snow is more affected by anthropogenic and marine contributions while the winter aerosol flux is dominated by crustal sources. For trace elements, the largest mean EFc seasonal variations are displayed by V (with a factor of 3.8), Sb (3.3), Cu (3.3), Pb (2.9), Bi (2.8), Cd (2.1), Zn (1.9), Ni (1.8), Ag (1.8), As (1.7) and Co (1.6). The chemical data are also discussed in light of the atmospheric stability and back-trajectories analyses in order to explain the observed seasonal variability and how human activities impact the high altitude environment in the Eastern Alps. The origin and behavior of air masses as inferred from the evaluation of 48-h back-trajectories show significant seasonal differences. However, the large changes in trace elements concentrations seem to be more related to the vertical structure of the troposphere at a regional scale rather than the synoptic weather patterns.

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

2011-02-01

405

Geophysical signatures of the alkaline intrusions bordering the Paraná Basin  

NASA Astrophysics Data System (ADS)

Alkaline intrusions at the edges of the Paraná Basin are mostly grouped in provinces, but occur in a few cases as isolated bodies. All of these intrusions surround the edge of the basin and intrude into weak zones, such as belts and arches. In rare cases, the intrusions are covered by basin sediments, but they are mainly found in the exposed crystalline basement. In this study, we discuss the gravimetric and magnetic signatures of the alkaline intrusions in the Ponta Grossa Arch, Alto Paranaíba and Goiás provinces. The provinces ages range from 120 to 60 Ma, and are thus contemporary or subsequent to the Serra Geral magmatic event. The magnetic signature of the province intrusions indicates a strong residual magnetization, as observed on maps of the anomalies reduced to the pole, which were different from the anomalies resulting only from induced field. The residual magnetization was often verified by magnetic measurements in the laboratory. Some of the studied intrusions have reverse magnetization. Other intrusions shows two magnetization directions, normal and reverse, indicating the likely presence of carbonatite. With the exception of the intrusions containing carbonatite, anomalies reduced to the pole are characterized by highly concentrated magnetization and well-defined 3D geometry. Intrusions with carbonatite usually exhibit dual polarization. The gravimetric signature is a positive anomaly of great magnitude. When carbonatite is present, a negative anomaly within the positive anomaly is observed, where the negative anomaly is associated with carbonatite. The gravimetric anomalies are also highly localized, indicative of 3D bodies. Gravimetric and aeromagnetic maps of the provinces show a coincidence between the location of the mapped intrusions and the anomalies. These maps also show anomalies that have the same signature but are not related to the mapped outcrops. This result suggests that these anomalies are indicative of the presence of alkaline intrusions that are covered by sediments (from either the Paraná Basin or alluvial sources) or are not emergent from the basement. The analysis of these maps and the inversion of the anomalies allows inference of the subsurface geometry, and thus also calculation of the body volume and its emplacement mechanism, which are elements necessary for mineral deposit evaluation. The maps also allow the identification of pre-existing faults and those formed during the emplacement. We compare geophysical models developed for gravimetric and magnetic data for the intrusions of the Ponta Grossa Arch, Alto Paranaíba and Goiás provinces in order to identify physical similarities and differences in the alkaline intruded into lithospheric segments with different tectonic histories.

Marangoni, Yara R.; Mantovani, Marta S. M.

2013-01-01

406

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

407

Search for Very Low-Mass Brown Dwarfs and Free-Floating Planetary-Mass Objects in Taurus  

NASA Astrophysics Data System (ADS)

The number of low-mass brown dwarfs and even free floating planetary-mass objects in young nearby star-forming (SF) regions and associations is continuously increasing, offering the possibility to study the low-mass end of the initial mass function in greater detail. In this paper, we present six new candidates for (very) low-mass objects in the Taurus SF region one of which was recently discovered in parallel by Luhman et al. The underlying data we use is part of a new database from a deep near-infrared survey at the Calar Alto observatory. The survey is more than 4 mag deeper than the Two Micron All Sky Survey and covers currently ~1.5 deg2. Complementary optical photometry from Sloan Digital Sky Survey were available for roughly 1.0 deg2. After selection of the candidates using different color indices, additional photometry from Spitzer/IRAC was included in the analysis. In greater detail, we focus on two very faint objects for which we obtained J-band spectra. Based on comparison with reference spectra, we derive a spectral type of L2 ± 0.5 for one object, making it the object with the latest spectral type in Taurus known today. From models, we find the effective temperature to be 2080 ± 140 K and the mass 5-15 Jupiter masses. For the second source, the J-band spectrum does not provide definite proof of the young, low-mass nature of the object, as the expected steep water vapor absorption at 1.33 ?m is not present in the data. We discuss the probability that this object might be a background giant or carbon star. If it were a young Taurus member, however, a comparison to theoretical models suggests that it lies close to or even below the deuterium burning limit (<13 M Jup) as well. A first proper motion analysis for both objects shows that they are good candidates for being Taurus members. Based on observations made at the Calar Alto Observatory. Based on observations made with ESO Telescopes at the Paranal Observatories under program ID 278.C-5043A. This work is based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA.

Quanz, Sascha P.; Goldman, Bertrand; Henning, Thomas; Brandner, Wolfgang; Burrows, Adam; Hofstetter, Lorne W.

2010-01-01

408

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

409

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

410

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

411

New Voltage and Current Thresholds Determined for Sustained Space Plasma Arcing  

NASA Technical Reports Server (NTRS)

It has been known for many years, based partly on NASA Glenn Research Center testing, that high-voltage solar arrays arc into the space plasma environment. Solar arrays are composed of solar cells in series with each other (a string), and the strings may be connected in parallel to produce the entire solar array power. Arcs on solar arrays can damage or destroy solar cells, and in the extreme case of sustained arcing, entire solar array strings, in a flash. In the case of sustained arcing (discovered at Glenn and applied to the design and construction of solar arrays on Space Systems/Loral (SS/Loral, Palo Alto, CA) satellites, Deep-Space 1, and Terra), an arc on one solar array string can couple to an adjacent string and continue to be powered by the solar array output until a permanent electrical short is produced. In other words, sustained arcs produced by arcs into the plasma (so-called trigger arcs) may turn into disastrous sustained arcs by involving other array strings.

Ferguson, Dale C.; Galofaro, Joel T.; Vayner, Boris V.

2003-01-01

412

SUNRISE: high resolution UV/VIS observations of the Sun from the stratosphere  

NASA Astrophysics Data System (ADS)

SUNRISE is an international project for the development, construction, and operation of a balloon-borne solar telescope with an aperture of 1 m, working in the UV/VIS spectral domain. The main scientific goal of SUNRISE is to understand the structure and dynamics of the magnetic field in the atmosphere of the Sun. SUNRISE will provide near diffraction-limited images of the photosphere and chromosphere with an unpredecented resolution down to 35 km on the solar surface at wavelengths around 220 nm. The focal-plane instrumentation consists of a polarization sensitive spectrograph, a Fabry-Perot filter magnetograph, and a phase-diverse filter imager working in the near UV. The first stratospheric long-duration balloon flight of SUNRISE is planned in Summer 2009 from the swedish ESRANGE station. SUNRISE is a joint project of the german Max-Planck-Institut fur Sonnensystemforschung (MPS), Katlenburg-Lindau, with the Kiepenheuer-Institut fur Sonnenphysik (KIS), Freiburg, Germany, the High-Altitude Observatory (HAO), Boulder, USA, the Lockheed-Martin Solar and Astrophysics Lab. (LMSAL), Palo Alto, USA, and the spanish IMaX consortium. In this paper we will present an actual update on the mission and give a brief description of its scientific and technological aspects.

Gandorfer, A. M.; Solanki, S. K.; Barthol, P.; Lites, B. W.; Martínez Pillet, V.; Schmidt, W.; Soltau, D.; Title, A. M.

2006-07-01

413

SUNRISE: High resolution UV/VIS observations of the Sun from the stratosphere  

NASA Astrophysics Data System (ADS)

SUNRISE is an international project for the development, construction, and operation of a balloon-borne solar telescope with an aperture of 1 m, working in the UV/VIS spectral domain. The main scientific goal of SUNRISE is to understand the structure and dynamics of the magnetic field in the atmosphere of the Sun. SUNRISE will provide near diffraction-limited images of the photosphere and chromosphere with an unpredecented resolution down to 35 km on the solar surface at wavelengths around 220 nm. The focal-plane instrumentation consists of a polarization sensitive spectrograph, a Fabry-Perot filter magnetograph, and a phase-diverse filter imager working in the near UV. The first stratospheric long-duration balloon flight of SUNRISE is planned in summer 2009 from the Swedish ESRANGE station. SUNRISE is a joint project of the German Max-Planck-Institut für Sonnensystemforschung (MPS), Katlenburg-Lindau, with the Kiepenheuer-Institut für Sonnenphysik (KIS), Freiburg, Germany, the High-Altitude Observatory (HAO), Boulder, USA, the Lockheed-Martin Solar and Astrophysics Lab. (LMSAL), Palo Alto, USA, and the Spanish IMaX consortium. In this paper we will present a brief description of the scientific and technological aspects of SUNRISE.

Gandorfer, A. M.; Solanki, S. K.; Barthol, P.; Martínez Pillet, V.; Schmidt, W.; Title, A. M.; Knölker, M.

414

SUNRISE: High resolution UV/VIS observations of the sun from the stratosphere  

NASA Astrophysics Data System (ADS)

SUNRISE is an international project for the development, construction and operation of a balloon-borne solar telescope with an aperture of 1 m, working in the UV/VIS spectral domain. The main scientific goal of SUNRISE is to understand the structure and dynamics of the magnetic field in the atmosphere of the Sun. SUNRISE will provide near diffraction-limited images of the photosphere and chromosphere with an unprecedented resolution down to 35 km on the solar surface at wavelengths around 220 nm. Active in-flight alignment and image stabilization techniques are used. The focal-plane instrumentation consists of a polarization sensitive spectrograph, a Fabry Perot filter magnetograph and a phase-diverse filter imager working in the near UV. The first stratospheric long-duration balloon flight of SUNRISE is planned in summer 2009 from the Swedish ESRANGE station. SUNRISE is a joint project of the German Max-Planck-Institut für Sonnensystemforschung (MPS), Katlenburg-Lindau, with the Kiepenheuer-Institut für Sonnenphysik (KIS), Freiburg, Germany, the High-Altitude Observatory (HAO), Boulder, USA, the Lockheed-Martin Solar and Astrophysics Laboratory (LMSAL), Palo Alto, USA, and the Spanish IMaX consortium. This paper will give an overview about the mission and a description of its scientific and technological aspects.

Sunrise Team; Barthol, P.; Gandorfer, A. M.; Solanki, S. K.; Knölker, M.; Martinez Pillet, V.; Schmidt, W.; Title, A. M.; SUNRISE Team

2008-07-01

415

The Vocational Training FacilityAn Interactive Learning Program to Return Persons With Physical Disabilities to Employment.  

PubMed

This paper describes the results of the program-development phase of the Vocational Training Facility (VTF) taking place at the Palo Alto Veterans Affairs Medical Center Rehabilitation Research and Development Center. The VTF staff has developed a self-paced, multimedia curriculum comprised of adapted training packages, interactive videos, and additional training and testing materials designed to teach entry-level desktop publishing and reasonable accommodation skills to individuals with spinal cord injuries. The curriculum is taught via the Macintosh™ computer to allow independent, "hands-off" access to training materials. Each student is given an integrated workstation that is equipped with the Desktop Vocational Assistant Robot (De VAR); a set of low-and high-technology assistive hardware, software, and devices; and ergonomic furniture and adaptations customized to fit individual learning and access needs. Each student completes a 12-week, full-time training program followed by a 3-month internship with a local corporate sponsor. This paper summarizes the evaluation results of the VTF program by the first nine students, with spinal cord injuries ranging paraplegia to high-level quadriplegia, who have completed the program. PMID:24441006

Hammel, J M; Van Der Loos, H F; Lepage, P; Burgar, C; Perkash, I; Shafer, D; Topp, E; Lees, D

1994-01-01

416

Extreme of Landscape in Nuclear Physics via High Power Accelerators and Innovative Instrumentation  

NASA Astrophysics Data System (ADS)

The advent of high power light and heavy ion accelerators producing intense secondary radioactive ion beams (RIB) made possible the exploration of a new territory of nuclei with extreme in Mass and/or N/Z ratios. To pursue the investigation of this "terra incognita" several projects, based on second generation accelerators producing intense stables and RIB, all aiming at the increase by several orders of magnitude of the RIB intensities are now under construction and/or planned for the end of this decade in the world. RIB production at SPES@Legnaro, SPIRAL2@GANIL, ALTO@Orsay, ISAC@TRIUMPF and HIE-ISOLDE@CERN are based on the ISOL method, RIBF@RIKEN, FRIB@MSU-NSCL, FAIR@GSI with the new Super-FRS fragment - separator takes advantage of the "In Flight" technique. Projects of high intensity heavy ions, and low energy drivers (< 10 MeV/n) are also foreseen at Flerov Laboratory@DUBNA, GSI, RIKEN and GANIL. Technical performances, innovative new instrumentation and methods, and keys experiments in connection with these second generation high intensity facilities will be reviewed.

Gales, S.

2013-06-01

417

Beach ridges U-Th dating in Tongoy bay and tectonic implications for a peninsula-bay system, Chile  

NASA Astrophysics Data System (ADS)

Along the Chilean coast, peninsulas associated with bays seem to behave as a complex system. They act as barrier to propagation of megathrust earthquakes along strike. To better understand how such a system works from ocean side to more inland, we investigated the area between the Tongoy bay and the Altos de Talinay in northern Chile (˜30°S). It represents a forearc peninsula-bay system in which a normal fault (Puerto Aldea fault) has been described as accommodating a relative vertical motion between the two parts, the peninsula being uplifted with respect to the bay. We dated shells from beach ridges by U-Th disequilibria in order to compare the bay area to the peninsula area for which 10Be dating of wave-cut platforms are available (Saillard et al., 2009). These indicate: (1) the Puerto Aldea fault activity probably ceased since at least ˜230 ka, implying the bay and peninsula parts are evolving together since then; (2) the uplift rate is variable and has decreased from ˜0.8 m/ka to ˜0.2 m/ka between ˜300 and 100 ka.

Saillard, M.; Riotte, J.; Regard, V.; Violette, A.; Hérail, G.; Audin, L.; Riquelme, R.

2012-12-01

418

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

419

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

420

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

421

Two new genera and three new species of freshwater crabs (Crustacea: Pseudothelphusidae: Potamocarcinini) from Chiapas, Mexico.  

PubMed

Two new genera, Sylvathelphusa n. gen. and Tzotzilthelphusa n. gen., and three new species, Sylvathelphusa kalebi n. sp., S. cavernicola n. sp. and Tzotzilthelphusa villarosalensis n. sp., of the tribe Potamocarcinini, family Pseudothelphusidae, are described from Chiapas, Mexico. Sylvathelphusa n. gen. is characterized by a male gonopod with the marginal plate between the caudal and mesial surfaces abruptly widening distally and forming a triangular apical projection; and a mesial process as a strong, acute spine forming a 90º angle with respect to the principal axis of the gonopod. Tzotzilthelphusa n. gen. exhibits a male gonopod strongly bent laterally in the distal third, and a mesial surface rounded distally with acute spinules. Sylvathelphusa n. gen. is similar to Potamocarcinus in gonopod morphology, in both straight and with a mesial process developed as strong tooth in a similar shape and position. Tzotzilthelphusa n. gen. is similar to Phrygiopilus in that the gonopods of both genera develop a supra-apical process that is a continuation of the mesial surface. The new taxa come from the Los Altos de Chiapas region and bring the total number of pseudothelphusid genera in Chiapas to 11. PMID:24613999

Villalobos, José Luis; Alvarez, Fernando

2013-01-01

422

Exercise capacity is the strongest predictor of mortality in patients with peripheral arterial disease  

PubMed Central

Objective The objective of this study was to assess the predictive value of clinical and exercise test variables in patients with peripheral arterial disease (PAD). Methods 725 PAD patients referred for exercise testing at the Palo Alto Veterans Hospital between 1997 and 2011 were subjected to a customized symptom-limited ramp treadmill protocol. Detailed clinical and exercise test data were collected at baseline and patients were followed for a mean of 11.3±6.3 years. Results During follow up, there were 364 deaths. Baseline exercise capacity was 7.0±2.6 Metabolic equivalents (METs) among survivors and 5.5±2.4 METs in those who died (P<.001). Although several physiologic parameters differed between survivors and non-survivors, age-adjusted Cox regression revealed that exercise capacity was the strongest independent predictor of mortality. Each additional MET achieved was associated with age-adjusted 18% and 20% reductions in all-cause and cardiovascular mortality, respectively (P<.001 for both). This variable surpassed all classical risk factors (including smoking and history of congestive heart failure) as well as all measured exercise test responses (including symptoms and ECG abnormalities). Conclusions Amongst PAD patients, reduced exercise capacity is the most powerful harbinger of long term mortality. This factor has predictive power beyond traditional risk factors and confirms the critical importance of fitness in this cohort.

Leeper, Nicholas J.; Myers, Jonathan; Zhou, Margaret; Nead, Kevin T.; Syed, Arshiya; Kojima, Yoko; Caceres, Roxanne Diaz; Cooke, John P.

2012-01-01

423

Spectroscopy of nearby late-type stars (Maldonado+, 2010)  

NASA Astrophysics Data System (ADS)

File table1 contains the name of the observed stars, coordinates, astrometric data, radial velocities and notes. Parallaxes are taken from van Leeuwen (2007, Cat. I/311) and proper motions from (2000, Cat. I/259). Radial velocities were derived from high-resolution spectra taken with the FOCES spectrograph at the Calar Alto observatory (Almeria, Spain) and the SARG spectrograph at the Telescopio Nazionale Galileo in La Palma (Canary Islands, Spain). Additional spectra from the public library "S4N" (Allende Prieto et al., 2004, Cat. J/A+A/420/183) were also used. Radial velocities were measured by cross-correlating the spectra of our programme stars with spectra of radial velocity standard stars taken from Barnes et al. (1986PASP...98..223B), Beavers et al. (1979PASP...91..698B), and Udry et al. (1999ASPC..185..383U, 1999ASPC..185..367U). For known spectroscopic binaries the radial velocity of the centre of mass of the system is given. These values are from Pourbaix et al. (Cat. B/sb9/) or Eker et al. (2008, Cat. V/128 ). Previous radial velocities reported in the literature are also given for comparison. (1 data file).

Maldonado, J.; Martinez-Arnaiz, R. M.; Eiroa, C.; Montes, D.; Montesinos, B.

2010-06-01

424

An All-Sky Transmission Monitor: ASTMON  

NASA Astrophysics Data System (ADS)

We present here the All-Sky Transmission Monitor (ASTMON), designed to perform a continuous monitoring of the surface brightness of the complete night sky in several bands. The data acquired are used to derive, in addition, a subsequent map of the multiband atmospheric extinction at any location in the sky and a map of the cloud coverage. The instrument has been manufactured to withstand extreme weather conditions and to remain operative. Designed to be fully robotic, it is ideal to be installed outdoors as a permanent monitoring station. The preliminary results based on two of the currently operative units (at Doñana National Park, Huelva, and at the Calar Alto Observatory, Almería, Spain) are presented here. The parameters derived using ASTMON are in good agreement with those previously reported, which illustrates the validity of the design and the accuracy of the manufacturing. The information provided by this instrument will be presented in forthcoming articles, once we have accumulated a statistically significant amount of data.

Aceituno, J.; Sánchez, S. F.; Aceituno, F. J.; Galadí-Enríquez, D.; Negro, J. J.; Soriguer, R. C.; Gomez, G. Sanchez

2011-09-01

425

Natural disasters and the gas pipeline system. Topical report, August 1994-June 1995  

SciTech Connect

Episodic descriptions are provided of the effect of the Loma Prieta earthquake (1989) on the gas pipeline systems of Pacific Gas & Electric Company and the City of Palo Alto and of the Northridge earthquake (1994) on Southern California Gas` pipeline system. The emergency response plans and activities of South Carolina Electric & Gas Company during hurricane Hugo (1989) and of City Gas Company of Florida and other small gas companies during hurricane Andrew (1992) are also reviewed. Descriptions of the great Flood of 1993 and its effects on the operations of Iowa-Illinois Gas & Electric Company and Laclede Gas Company and of the San Jacinto River Floods on the transmission lines of Valero Gas Co. are also provided. Local and federal regulatory requirements, and the current practices by the gas industry for dealing with natural disasters, such as through preventive measures (e.g., strapping of water heaters, excess flow valves), and the tracking of weather-related events are described. The important role that preplanning and coordination with the local emergency response bodies and other gas utilities plays during a natural disaster is examined.

Atallah, S.; Saxena, S.; Martin, S.B.; Willowby, A.B.; Alger, R.

1996-11-15

426

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

427

Stellar companions to exoplanet host stars: Lucky Imaging of transiting planet hosts  

NASA Astrophysics Data System (ADS)

Observed properties of stars and planets in binary/multiple star systems provide clues to planet formation and evolution. We extended our survey for visual stellar companions to the hosts of transiting exoplanets by 21 stars, using the Lucky Imaging technique with the two AstraLux instruments: AstraLux Norte at the Calar Alto 2.2-m telescope and AstraLux Sur at the European Southern Observatory 3.5-m New Technology Telescope at La Silla. Typically, a sensitivity to companions of magnitude difference ?z' ? 4 is achieved at angular separation ? = 0.5 arcsec and ?z' ? 6 for ? = 1 arcsec. We present observations of two previously unknown binary candidate companions, to the transiting planet host stars HAT-P-8 and WASP-12, and derive photometric and astrometric properties of the companion candidates. The common proper motions of the previously discovered companion candidates with the exoplanet host stars TrES-4 and WASP-2 are confirmed from follow-up observations. A Bayesian statistical analysis of 31 transiting exoplanet host stars observed with AstraLux suggests that the companion star fraction of planet hosts is not significantly different from that of solar-type field stars, but that the binary separation is on average larger for planet host stars.

Bergfors, C.; Brandner, W.; Daemgen, S.; Biller, B.; Hippler, S.; Janson, M.; Kudryavtseva, N.; Geißler, K.; Henning, T.; Köhler, R.

2013-01-01

428

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

429

Bernhard Schmidt and the Schmidt Telescope for Mapping the Sky  

NASA Astrophysics Data System (ADS)

Bernhard Voldemar Schmidt (1879--1935) was born in Estonia. He ran an optical workshop in Mittweida, Saxonia, between 1901 and 1927. Astronomers appreciated the quality of his telescopes. Starting in 1925, working freelance in Hamburg Observatory, he developed a short focal length optical system with a large field of view. He succeeded in inventing the ``Schmidt Telescope'' in 1930, which allows the imaging a large field of the sky without any distortions. Shortly after Schmidt's death, the director of the observatory published details on the invention and production of the Schmidt Telescope. After World War II, Schmidt telescopes have been widely used. The first large Schmidt telescope was built in 1948, the ``Big Schmidt'' (126 cm), Mount Palomar, USA. Schmidt telescopes are also important tools for cosmology. The result of the Palomar Observatory Sky Surveys (1949--1958, 1985--1999) is a data base of about 20 million galaxies and over 100 million stars, supplemented in 1971 by the ESO Schmidt for the southern sky. Also high resolution spectrometers can be fitted to the Schmidt telescope. The 80 cm Schmidt telescope of Hamburg Observatory, planned since 1936, finished 1955, is on Calar Alto, Spain, since 1975. Combined with two objective prisms, it was used for a Quasar survey project.

Wolfschmidt, G.

430

A globally efficient means of distributing UTC time and frequency through GPS  

NASA Technical Reports Server (NTRS)

Time and frequency outputs comparable in quality to the best laboratories have been demonstrated on an integrated system suitable for field application on a global basis. The system measures the time difference between 1 pulse-per-second (pps) signals derived from local primary frequency standards and from a multi-channel GPS C/A receiver. The measured data is processed through optimal SA Filter algorithms that enhance both the stability and accuracy of GPS timing signals. Experiments were run simultaneously at four different sites. Even with large distances between sites, the overall results show a high degree of cross-correlation of the SA noise. With sufficiently long simultaneous measurement sequences, the data shows that determination of the difference in local frequency from an accepted remote standard to better than 1 x 10(exp -14) is possible. This method yields frequency accuracy, stability, and timing stability comparable to that obtained with more conventional common-view experiments. In addition, this approach provides UTC(USNO MC) in real time to an accuracy better than 20 ns without the problems normally associated with conventional common-view techniques. An experimental tracking loop was also set up to demonstrate the use of enhanced GPS for dissemination of UTC(USNO MC) over a wide geographic area. Properly disciplining a cesium standard with a multi-channel GPS receiver, with additional input from USNO, has been found to permit maintaining a timing precision of better than 10 ns between Palo Alto, CA and Washington, DC.

Kusters, John A.; Giffard, Robin P.; Cutler, Leonard S.; Allan, David W.; Miranian, Mihran

1995-01-01

431

Committee on the History of Geophysics: A report  

NASA Astrophysics Data System (ADS)

The AGU Committee on the History of Geophysics (CHG) was created in 1982 following recommendations of an ad hoc committee, and its main task to date has been to promote the preservation and study of the history of geophysics. Toward that goal, it encouraged appointment of an Eos editor for history and later suggested an annual series, “History of Geophysics,” to consist of historyrelated articles from AGU publications. It has started a newsletter, and it has encouraged, sponsored,- coordinated, and recorded an increasing number of history talks at AGU meetings.The responsibility for this work has fallen primarily on five CHG officers. The Eos history editor, C. Stewart Gillmor (Wesleyan University, Middletown, Conn.), solicits and edits history articles, arranges their review by referees, and also selects and edits material for the History of Geophysics series. The newsletter editor, Sam Silverman, single-handedly (with help from an Osborne PC) produces our newsletter. A meeting coordinator, initially Marty Walt of Lockheed Laboratories (Palo Alto, Calif.) and then (until recently) Pat Taylor of the National Aeronautics and Space Administration Goddard Space Flight Center (Greenbelt, Md.), helps arrange, publicize, and record history talks at AGU meetings. The secretary, Jim Heirtzler (Woods Hole Oceanographic Institution, Woods Hole, Mass.) is in charge of minutes of meetings, correspondence, and the mailing of the newsletter. Finally, as chairman, I carry overall responsibility for the activities of CHG, initiate new ventures, and often back up other officers in their tasks.

Stern, David P.

432

Graedel named to AIP Board  

NASA Astrophysics Data System (ADS)

Thomas E. Graedel, an atmospheric scientist at AT&T Bell Laboratories (Murray Hill, N.J.), has been made an AGU representative to the Governing Board of the American Institute of Physics (AIP). The board oversees the operations of AIP, a nonprofit umbrella organization for 10 member societies, including AGU. Other AGU members currently on the governing board include Orson Anderson, a geophysicist at the University of California, Los Angeles; AGU General Secretary Peter M. Bell of the Norton Company, Worcester, Mass.; AGU Executive Director A. F. Spilhaus, Jr.; and Martin Walt, a geophysicist with the Lockheed Corporation in Palo Alto, Calif.All AGU members receive the benefits of membership in AIP, including the monthly magazine Physics Today. Other AIP services available to AGU members include access to an employment service, AIP's electronic network Pi-NET, and an insurance program. AGU members can also subscribe to journals published by the American Physical Society, another AIP member society, at discounted rates.—WWM

Maggs, William Ward

433

HD 51106 and HD 50747: an ellipsoidal binary and a triple system observed with CoRoT  

NASA Astrophysics Data System (ADS)

Context: We present an analysis of the observations of HD 51106 and HD 50747 by the satellite CoRoT, obtained during its initial run, and of the spectroscopic preparatory observations. Aims: We complete an analysis of the light curve, extract the main frequencies observed, and discuss some preliminary interpretations about the stars. Methods: We used standard Fourier transform and pre-whitening methods to extract information about the periodicities of the stars. Results: HD 51106 is an ellipsoidal binary, the light curve of which can be completely explained by the tidal deformation of the star and smaller secondary effects. HD 50747 is a triple system containing a variable star, which exhibits many modes of oscillation with periods in the range of a few hours. On the basis of this period range and the analysis of the physical parameters of the star, we conclude that HD 50747 is a ?-Doradus star. Based on observations obtained by CoRoT, a space project operated by the French Space Agency (CNES) with the participation of the Science Program of ESA, ESTEC/RSSD, Austria, Belgium, Brazil, Germany, and Spain. Also based on observations made with ESO telescopes at the La Silla Observatory under the ESO large program LP178.D-0361, at the Observatoire de Haute Provence, INSU/CNRS, France, 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.

Dolez, N.; Vauclair, S.; Michel, E.; Hui-Bon-Hoa, A.; Vauclair, G.; Le Contel, D.; Mathias, P.; Poretti, E.; Amado, P. J.; Rainer, M.; Samadi, R.; Baglin, A.; Catala, C.; Auvergne, M.; Uytterhoeven, K.; Valtier, J.-C.

2009-10-01

434

Geomorphic evidence for post-10 Ma uplift of the western flank of the central Andes 18°30'-22°S  

NASA Astrophysics Data System (ADS)

The western Andean mountain front forms the western edge of the central Andean Plateau. Between 18.5° and 22°S latitude, the mountain front has ˜3000 m of relief over ˜50 km horizontal distance that has developed in the absence of major local Neogene deformation. Models of the evolution of the plateau, as well as paleoaltimetry estimates, all call for continued large-magnitude uplift of the plateau surface into the late Miocene (i.e., younger than 10 Ma). Longitudinal river profiles from 20 catchments that drain the western Andean mountain front contain several streams with knickpoint-bounded segments that we use to reconstruct the history of post-10 Ma surface uplift of the western flank of the central Andean Plateau. The generation of knickpoints is attributed to tectonic processes and is not a consequence of base level change related to Pacific Ocean capture, eustatic change, or climate change as causes for creating the knickpoint-bounded stream segments observed. Minor valley-filling alluvial gravels intercalated with the 5.4 Ma Carcote ignimbrite suggest uplift related river incision was well under way by 5.4 Ma. The maximum age of river incision is provided by the regionally extensive, approximately 10 Ma El Diablo-Altos de Pica paleosurface. The river profiles reveal that relative surface uplift of at least1 km occurred after 10 Ma.

Hoke, Gregory D.; Isacks, Bryan L.; Jordan, Teresa E.; Blanco, NicoláS.; Tomlinson, Andrew J.; Ramezani, Jahandar

2007-10-01

435

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

436

Priapism secondary to perineal abscess in a dog - a case report.  

PubMed

A 7-year-old intact male Boxer was referred to our services at the Veterinary Teaching Hospital of the University of Trás-os-Montes and Alto Douro, suffering from a persistently erect penis (including the bulbus glandis) that had been exposed for several days. Radiographic and ultrasonographic examinations detected a 5.0 x 3.5 cm mass located dorso-laterally to the urinary bladder. The microbial culture of the mass revealed Staphylococcus spp. At that time, we suspected the involvement of an abscess in the origin of the priapism. Medical and surgical treatments were promptly instituted, which allowed for penile withdrawal into the prepuce; however, the resolution of the penile erection was not accomplished in the following days and penile amputation was required. Histological evaluation of the excised penis revealed extensive infarction of the erectile tissue of the pars longa and bulbus glandis, and also of the blood vessels of the penis. Following penile amputation and antimicrobial therapy, the animal fully recovered. Ultimately, the animal died as a consequence of gastric torsion. At necropsy, some lesions compatible with a previous perforation of the intestinal wall were recorded. The data gathered from the anamnesis, the physical and imaging examinations, along with the post-mortem findings, allowed us to conclude that in this clinical case the primary cause of priapism was a perineal abscess due to bowel perforation. PMID:19055555

Martins-Bessa, A; Santos, T; Machado, J; Pinelas, R; Pires, M A; Payan-Carreira, R

2010-06-01

437

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

438

Program development and defining characteristics of returning military in a VA Polytrauma Network Site.  

PubMed

The conflicts in Iraq and Afghanistan have resulted in a new generation of combat survivors with complex physical injuries and emotional trauma. This article reports the initial implementation of the Polytrauma Network Site (PNS) clinic, which is a key component of the Department of Veterans Affairs (VA) Polytrauma System of Care and serves military personnel returning from combat. The PNS clinic in Palo Alto, California, is described to demonstrate the VA healthcare system's evolving effort to meet the clinical needs of this population. We summarize the following features of this interdisciplinary program: (1) sequential assessment, from initial traumatic brain injury screening throughout our catchment area to evaluation by the PNS clinic team, and (2) clinical evaluation results for the first 62 clinic patients. In summary, this population shows a high prevalence of postconcussion symptoms, posttraumatic stress, poor cognitive performance, head and back pain, auditory and visual symptoms, and problems with dizziness or balance. An anonymous patient feedback survey, which we used to fine-tune the clinic process, reflected high satisfaction with this new program. We hope that the lessons learned at one site will enhance the identification and treatment of veterans with polytrauma across the country. PMID:18075959

Lew, Henry L; Poole, John H; Vanderploeg, Rodney D; Goodrich, Gregory L; Dekelboum, Sharon; Guillory, Sylvia B; Sigford, Barbara; Cifu, David X

2007-01-01

439

In search of the pre- and post-neolithic genetic substrates in Iberia: evidence from Y-chromosome in Pyrenean populations.  

PubMed

The male-mediated genetic legacy of the Pyrenean population was assessed through the analysis of 12 Y-STR and 27 Y-SNP loci in a sample of 169 males from 5 main geographical areas in the Spanish Pyrenees: Cinco Villas (Western Pyrenees), Jacetania and Valle de Arán (Central Pyrenees) and Alto Urgel and Cerdaña (Eastern Pyrenees). In the Iberian context, the Pyrenean samples present some specificities, being characterizeded by a high proportion of chromosomes R1b1b2-M269 (including the usually uncommon R1b1b2d-SRY(2627) and R1b1b2c-M153 types) or I2a2-M26 and low proportions of other haplogroups. Our results indicate that an old pre-Neolithic substrate is preponderant in populations of the whole Pyrenean fringe. However, AMOVA revealed a high level of substructure within Pyrenean populations, partially explained by drift effects as well as by the signature of an ancient genetic differentiation between Western and Eastern Pyrenees. PMID:18803634

López-Parra, A M; Gusmão, L; Tavares, L; Baeza, C; Amorim, A; Mesa, M S; Prata, M J; Arroyo-Pardo, E

2009-01-01

440

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

441

Technology to play hand in future power market  

SciTech Connect

A revolution is coming to the electricity industry, and it`s coming fast. As deregulation proceeds apace, new technologies promise greater efficiencies in everything from the power plant to the transmission grid. {open_quotes}In fact, technologies emerging from two different industry segments, aerospace and gas, have fused over the last decade to create a potent new competitor, the gas-fired combustion turbine, which is reshaping the electricity business,{close_quotes} says Richard E. Balzhiser, president emeritus of the Electric Power Research Institute in Palo Alto, California. One machine, which uses technology borrowed from the jet engine, is inexpensive, portable, and highly efficient. In fact, {open_quotes}6-watt personal turbines are being developed for military personnel,{close_quotes} Balzhiser says. But new technologies will not likely force the early retirement of our coal-fired and nuclear power plants. {open_quotes}Despite the bad press these facilities have received, we should remain committed to today`s top-performing coal and nuclear units.{close_quotes} Innovations are also on the horizon in electronic information systems and new electrotechnologies - {open_quotes}We`ll be buying comfort, refrigerated space, RPMs and horsepower, portable power, and light in the years ahead, not just kilowatt-hours,{close_quotes} Balzhiser says.

Balzhiser, R.E. [Electric Power Research Institute, Palo Alto, CA (United States)

1997-12-31

442

Infrared Spectroscopy of Black Hole Candidates  

NASA Technical Reports Server (NTRS)

ISO LWS and SWS observations of the approx. solar mass black hole candidates 1E1740.7-2942 and GRS1758-258 are presented. For 1E1740.7-2942, it has been suggested that the luminosity is provided in whole or part by Bondi-Hoyle accretion from a surrounding black hole (Bally & Leventhal 1991, Nat, 353,234). Maloney et al. (1997, ApJ482, L41) have predicted that detectable far-infrared line emission from [0I] (63 microns), [CII] (158 microns), [SiII] (35 microns) and other lines will arise from black holes which are embedded in molecular clouds. No strong line emission associated with either 1E1740.7-2942 or GRS1758-258 was detected, implying either that 1) these sources are not embedded in dense molecular clouds, or 2) that their average X-ray luminosity over the past 100 years is significantly lower than its current value. The measured upper limits to the line fluxes are compared with the models of Maloney et al.to constrain the properties of the ISM in the vicinity of these X-ray sources.

Colgan, Sean W.; Cotera, A. S.; Maloney, P. R.; Hollenbach, D. J.; DeVincenzi, Donald L. (Technical Monitor)

2000-01-01

443

Science Hack Day: an opportunity for public engagement, art/science mash-ups, and inspiration  

NASA Astrophysics Data System (ADS)

The idea of a Science Hack Day (http://sciencehackday.com/) is to put non-scientists (designers, web developers, artists, interested enthusiasts) in a room with scientists and some good ideas, and see what science-themed project they can create in a weekend (about 24 hours of real hacking). The motto of the organizers is ``Get Excited and Make Things with Science!'' I have participated in several of these events including the first one held in the United State in Palo Alto in 2010 and as a remote advisor to participants in Nairobi, Kenya. To these events I have brought particle physics data from both the BaBar and the CMS (Compact Muon Solenoid) experiments, data from the CoGeNT dark matter direct-detection experiment, and my expertise and enthusiasm. The experience has been transformative for me as both a scientist and a science advocate. This talk will recount my experiences with Science Hack Day events in general and detail some projects that have come out of these days, including the Particle Physics Wind Chime (http://www.mattbellis.com/windchime/) and the Standard Model of Cocktail Physics (http://www.physicsdavid.net/2012/11/standard-model-of-cocktail-physics/). Opportunities for other scientists to take part in similar events will be discussed.

Bellis, Matthew

2013-04-01

444

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

445

Pharmacokinetics, electrophysiological, and morphological effects of the intravitreal injection of mycophenolic Acid in rabbits.  

PubMed

Abstract Purpose: To determine the half-life of mycophenolic acid (MPA) in the vitreous of New Zealand albino rabbits after intravitreal injection and the retinal toxicity of different doses of MPA. Methods: Ten micrograms of MPA (Roche Bioscience, Palo Alto, CA) was injected in the vitreous of 16 rabbits, animals were sacrificed at different time-points, and vitreous samples underwent high-performance liquid chromatography. For functional and morphological studies, 5 doses of MPA (0.05, 0.5, 2, 10, and 100??g) were injected in the vitreous of 20 rabbits. As control, contralateral eyes were injected with aqueous vehicle. Electroretinograms (ERGs) were recorded before injection and at days 7, 15, and 30. Animals were sacrificed on day 30 and retinas were analyzed under light microscopy. Results: MPA half-life in the vitreous was 5.0±0.3 days. ERG revealed photoreceptor functional impairment in eyes injected with 0.5??g and higher on day 30, while eyes injected with 100??g presented the same changes already from day 15. No morphological change was found. Conclusions: MPA vitreous half-life is 5.0 days. Intravitreal injection of 0.5??g MPA and higher causes dose- and time-related photoreceptor sensitivity decrease in rabbits. The MPA dose of 0.05??g may be safe for intravitreal use in rabbits. PMID:24828287

Gasparin, Fabio; Aguiar, Renata Genaro; Ioshimoto, Gabriela Lourençon; Silva-Cunha, Armando; Fialho, Silvia Ligório; Liber, André Mauricio; Nagy, Balázs Vince; Oiwa, Nestor Norio; Costa, Marcelo Fernandes; Joselevitch, Christina; Ventura, Dora Fix; Damico, Francisco Max

2014-08-01

446

Hydrological controls on methylmercury distribution and flux in a tidal marsh.  

PubMed

The San Francisco Estuary, California, contains mercury (Hg) contamination originating from historical regional gold and Hg mining operations. We measured hydrological and geochemical variables in a tidal marsh of the Palo Alto Baylands Nature Preserve to determine the sources, location, and magnitude of hydrological fluxes of methylmercury (MeHg), a bioavailable Hg species of ecological and health concern. Based on measured concentrations and detailed finite-element simulation of coupled surface water and saturated-unsaturated groundwater flow, we found pore water MeHg was concentrated in unsaturated pockets that persisted over tidal cycles. These pockets, occurring over 16% of the marsh plain area, corresponded to the marsh root zone. Groundwater discharge (e.g., exfiltration) to the tidal channel represented a significant source of MeHg during low tide. We found that nonchannelized flow accounted for up to 20% of the MeHg flux to the estuary. The estimated net flux of filter-passing (0.45 ?m) MeHg toward estuary was 10 ± 5 ng m(-2) day(-1) during a single 12-h tidal cycle, suggesting an annual MeHg load of 1.17 ± 0.58 kg when the estimated flux was applied to present tidal marshes and planned marsh restorations throughout the San Francisco Estuary. PMID:24828335

Zhang, Hua; Moffett, Kevan B; Windham-Myers, Lisamarie; Gorelick, Steven M

2014-06-17

447

1993 Gordon Bell Prize Winners  

NASA Technical Reports Server (NTRS)

The Gordon Bell Prize recognizes significant achievements in the application of supercomputers to scientific and engineering problems. In 1993, finalists were named for work in three categories: (1) Performance, which recognizes those who solved a real problem in the quickest elapsed time. (2) Price/performance, which encourages the development of cost-effective supercomputing. (3) Compiler-generated speedup, which measures how well compiler writers are facilitating the programming of parallel processors. The winners were announced November 17 at the Supercomputing 93 conference in Portland, Oregon. Gordon Bell, an independent consultant in Los Altos, California, is sponsoring $2,000 in prizes each year for 10 years to promote practical parallel processing research. This is the sixth year of the prize, which Computer administers. Something unprecedented in Gordon Bell Prize competition occurred this year: A computer manufacturer was singled out for recognition. Nine entries reporting results obtained on the Cray C90 were received, seven of the submissions orchestrated by Cray Research. Although none of these entries showed sufficiently high performance to win outright, the judges were impressed by the breadth of applications that ran well on this machine, all nine running at more than a third of the peak performance of the machine.

Karp, Alan H.; Simon, Horst; Heller, Don; Cooper, D. M. (Technical Monitor)

1994-01-01

448

Do the students understand the thermodynamics concepts?  

NASA Astrophysics Data System (ADS)

In the last years, researchers have made efforts to evaluate how thermodynamical concepts and laws are being learned by students. In a previous study, we based our research on the answers to a test presented to a restrict number of university students. We have identified a number of specific difficulties such as the understanding of heat, temperature, work and internal energy concepts and applications of the first and second laws of thermodynamics to simple physical processes. In this work, we extend our study to students of other different university courses to realize how thermodynamics concepts and laws are being learned and understood. We are particularly interested how the university students are able to apply the first and second laws to irreversible processes. The methodology consists on the analysis of the results obtained with a questionnaire of multiple choice forms with only one correct answer. The investigation was carried in the University of Trás-os-Montes e Alto Douro, in Portugal, with students of several courses such as Forest, Environmental and Animal Science Engineering, Physics/Chemistry teaching among others. We found that many students had difficulties with the application of first and second laws to irreversible processes. Many others are misunderstanding the energy transfer signal convention.

Pereira, Mário; Caramelo, Liliana; Anacleto, Joaquim

2010-05-01

449

Investigation of active regions at high resolution by balloon flights of the Solar Optical Universal Polarimeter (SOUP)  

NASA Technical Reports Server (NTRS)

SOUP is a versatile, visible-light solar observatory, built for space or balloon flight. It is designed to study magnetic and velocity fields in the solar atmosphere with high spatial resolution and temporal uniformity, which cannot be achieved from the surface of the earth. The SOUP investigation is carried out by the Lockheed Palo Alto Research Laboratory, under contract to NASA's Marshall Space Flight Center. Co-investigators include staff members at a dozen observatories and universities in the U.S. and Europe. The primary objectives of the SOUP experiment are: to measure vector magnetic and velocity fields in the solar atmosphere with much better spatial resolution than can be achieved from the ground; to study the physical processes that store magnetic energy in active regions and the conditions that trigger its release; and to understand how magnetic flux emerges, evolves, combines, and disappears on spatial scales of 400 to 100,000 km. SOUP is designed to study intensity, magnetic, and velocity fields in the photosphere and low chromosphere with 0.5 arcsec resolution, free of atmospheric disturbances. The instrument includes: a 30 cm Cassegrain telescope; an active mirror for image stabilization; broadband film and TV cameras; a birefringent filter, tunable over 5100 to 6600 A with 0.05 A bandpass; a 35 mm film camera and a digital CCD camera behind the filter; and a high-speed digital image processor.

Tarbell, T.; Frank, Z.; Gilbreth, C.; Shine, R.; Title, A.; Topka, K.; Wolfson, J.

1989-01-01

450

High resolution studies of sunspots and flux tubes  

NASA Technical Reports Server (NTRS)

This contract is for a three-year research study of sunspots and magnetic flux tubes in the solar atmosphere, using tunable filter images collected with a CCD camera during observing runs at the Canary Islands observatories in Spain. The best observations are analyzed and compared with theoretical models, to study the structure and dynamics of sunspots, their connections with surrounding magnetic fields, and the properties and evolution of smaller flux tubes in plage and quiet sun. Scientific results are reported at conferences and published in the appropriate journals. The contract is being performed by the Solar and Astrophysics Laboratory, part of the Lockheed Palo Alto Research Laboratory (LPARL) of the Research and Development Division (RDD) of Lockheed Missiles and Space Co., Inc. (LMSC). The principal investigator is Dr. Alan Title, and the research is done by him and other scientific staff at LPARL and Solar Physics Research Corporation (SPRC), often in collaboration with visiting scientists and students from other institutions. Highlights during this reporting period include completing the final version of a paper on the Evershed effect, writing a paper on magnetic diffusion, continuing work on contrast of small flux tubes, and work on the development of new models to interpret our sunspots observations.

Title, Alan

1994-01-01

451

The circumstellar structure of the Be shell star ? Persei. II. Modeling  

NASA Astrophysics Data System (ADS)

We model Fe Ii 5317 emission lines and phase resolved He I 6678 and 5876 emission lines of the bright B2e&sdO shell binary phi Per to find the size and shape of the excitation region inside the circumprimary disk. We find the Fe Ii 5317 emission to originate within 9 stellar radii in an axisymmetric disk around the primary. Orbital phase variations of He I 6678 are fit in terms of a disk sector with disk radius of 10 stellar radii and opening angle of =~ 120degr facing the secondary. This region can be alternatively described by an intersection of a sphere around the secondary and the circumprimary disk with a penetration depth of about 7 R_*. Similar fit values are found for He I 5876. The enigmatic orbital phase precedence of shell occurrence in the He I emission features is discussed. We favor a model in which the inner He I shell is deformed because of differential rotation in combination with a finite recombination time. Based on observations collected at the Ond?ejov Observatory (of the Academy of Sciences of the Czech Republic), the German-Spanish Astronomical Center (DSAZ) -- Calar Alto (operated by the Max-Plank-Institut für Astronomie Heidelberg jointly with the Spanish National Commission for Astronomy) and Observatoire de Haute-Provence (OHP; CNRS, France).

Hummel, W.; Štefl, S.

2001-03-01

452

Low-mass visual binaries in the solar neighbourhood: The case of HD 141272  

NASA Astrophysics Data System (ADS)

We search for stellar and substellar companions of young nearby stars to investigate stellar multiplicity and formation of stellar and substellar companions. We detect common proper-motion companions of stars via multi-epoch imaging. Their companionship is finally confirmed with photometry and spectroscopy. Here we report the discovery of a new co-moving (13 ?) stellar companion ˜ 17.8 arcsec (350 AU in projected separation) north of the nearby star HD 141272 (21 pc). With EMMI/NTT optical spectroscopy we determined the spectral type of the companion to be M3±0.5V. The derived spectral type as well as the near infrared photometry of the companion are both fully consistent with a 0.26+0.07-0.06 M? dwarf located at the distance of HD 141272 (21 pc). Furthermore the photometry data rules out the pre-main sequence status, since the system is consistent with the ZAMS of the Pleiades. Based on observations obtained on La Silla in ESO programs 77.C-0572(A) and Calar Alto project number F06-3.5-016.

Eisenbeiss, T.; Seifahrt, A.; Mugrauer, M.; Schmidt, T. O. B.; Neuhäuser, R.; Roell, T.

2007-07-01

453

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

454

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.