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  1. The influence of air temperature inversions on snowmelt and glacier mass-balance simulations, Ammassalik island, SE Greenland

    Energy Technology Data Exchange (ETDEWEB)

    Mernild, Sebastian Haugard [Los Alamos National Laboratory; Liston, Glen [COLORADO STATE UNIV.

    2009-01-01

    In many applications, a realistic description of air temperature inversions is essential for accurate snow and glacier ice melt, and glacier mass-balance simulations. A physically based snow-evolution modeling system (SnowModel) was used to simulate eight years (1998/99 to 2005/06) of snow accumulation and snow and glacier ice ablation from numerous small coastal marginal glaciers on the SW-part of Ammassalik Island in SE Greenland. These glaciers are regularly influenced by inversions and sea breezes associated with the adjacent relatively low temperature and frequently ice-choked fjords and ocean. To account for the influence of these inversions on the spatiotemporal variation of air temperature and snow and glacier melt rates, temperature inversion routines were added to MircoMet, the meteorological distribution sub-model used in SnowModel. The inversions were observed and modeled to occur during 84% of the simulation period. Modeled inversions were defined not to occur during days with strong winds and high precipitation rates due to the potential of inversion break-up. Field observations showed inversions to extend from sea level to approximately 300 m a.s.l., and this inversion level was prescribed in the model simulations. Simulations with and without the inversion routines were compared. The inversion model produced air temperature distributions with warmer lower elevation areas and cooler higher elevation areas than without inversion routines due to the use of cold sea-breeze base temperature data from underneath the inversion. This yielded an up to 2 weeks earlier snowmelt in the lower areas and up to 1 to 3 weeks later snowmelt in the higher elevation areas of the simulation domain. Averaged mean annual modeled surface mass-balance for all glaciers (mainly located above the inversion layer) was -720 {+-} 620 mm w.eq. y{sup -1} for inversion simulations, and -880 {+-} 620 mm w.eq. y{sup -1} without the inversion routines, a difference of 160 mm w.eq. y

  2. Holocene changes in climate and vegetation in the Ammassalik area, East Greenland, recorded in lake sediments and soil profiles

    DEFF Research Database (Denmark)

    Jakobsen, Bjarne Holm; Fredskild, Bent; Pedersen, Jørn Bjarke Torp

    2008-01-01

    Holocene climatic, vegetational and environmental changes on the Ammassalik Island in SE Greenland (65.5 N and 37.5 W) have been studied in lake sediments and soil profiles. Based on the stratigraphy of sediments, geobiochemical characteristics, pollen and other biological proxies, a history....... Generally decreasing insolation, a still colder landscape and near coastal sea, potentially further cooled by the negative albedo feedback from snow and ice, generally increase a gradient driven circulation of heat and moisture northwards in the western part of the North Atlantic. Counteracting...

  3. Climatic conditions at the Mittivakkat Glacier catchment (1994-2006), Ammassalik Island, SE Greenland, and in a 109-year perspective (1898-2006)

    DEFF Research Database (Denmark)

    Mernild, Sebastian H.; Hansen, Birger; Jakobsen, Bjarne Holm

    2008-01-01

    the catchment, meteorological conditions are monitored at the coast (Station Coast, 25 m a.s.l.) for the period 1998-2006 and in the glacier area (Station Nunatak, 515 m a.s.l.) for 1994-2006. During this 13-year period, solar radiation shows increasing values, averaging 0.5 W m-2 y-1, at the nunatak...... and decreasing values, averaging 1.4 W m-2 y-1, at the coast. The mean annual solar radiation at Station Coast is 102 W m-2 y-1, which is about 10% lower than at Station Nunatak, and is probably caused by increasing and higher percentages of dense clouds and sea fog in the coastal area. The mean annual air...... temperature is increasing by 0.10ºC y-1 at the nunatak and by 0.05ºC y-1 at the coast, extending the thawing periods by about 50 days and 5 days, respectively. A snow-free period of 64 days is observed at the nunatak. The coastal area is highly dominated by air temperature inversion and sea breezes during...

  4. Exciton dephasing and biexciton binding in CdSe/ZnSe islands

    DEFF Research Database (Denmark)

    Wagner, Hans Peter; Tranitz, H.-P.; Preis, H;

    1999-01-01

    The dephasing of excitons and the formation of biexcitons in self-organized CdSe/ZnSe islands grown by molecular-beam epitaxy is investigated using spectrally resolved four-wave mixing. A distribution of exciton-exciton scattering efficiencies and dephasing times in the range of 0.5-10 ps...

  5. Dephasing and interaction of excitons CdSe/ZnSe islands

    DEFF Research Database (Denmark)

    Wagner, H. P.; Tranitz, H.-P.; Preis, H.;

    2000-01-01

    The dephasing of excitons in self-organized CdSe/ZnSe islands grown by molecular-beam epitaxy is investigated using spectrally resolved four-wave mixing. A distribution of dephasing times is observed, indicating the existence of localized excitons with different relaxation times at comparable...

  6. Multi-decadal marine- and land-terminating glacier recession in the Ammassalik region, southeast Greenland

    Directory of Open Access Journals (Sweden)

    S. H. Mernild

    2012-06-01

    Full Text Available Landsat imagery was applied to elucidate glacier fluctuations of land- and marine-terminating outlet glaciers from the Greenland Ice Sheet (GrIS and local land-terminating glaciers and ice caps (GIC peripheral to the GrIS in the Ammassalik region, Southeast Greenland, during the period 1972–2011. Data from 21 marine-terminating glaciers (including the glaciers Helheim, Midgaard, and Fenris, the GrIS land-terminating margin, and 35 GIC were examined and compared to observed atmospheric air temperatures, precipitation, and reconstructed ocean water temperatures (at 400 m depth in the Irminger Sea. Here, we document that net glacier recession has occurred since 1972 in the Ammassalik region for all glacier types and sizes, except for three GIC. The land-terminating GrIS and GIC reflect lower marginal and areal changes than the marine-terminating outlet glaciers. The mean annual land-terminating GrIS and GIC margin recessions were about three to five times lower than the GrIS marine-terminating recession. The marine-terminating outlet glaciers had an average net frontal retreat for 1999–2011 of 0.098 km yr−1, which was significantly higher than in previous sub-periods 1972–1986 and 1986–1999. For the marine-terminating GrIS, the annual areal recession rate has been decreasing since 1972, while increasing for the land-terminating GrIS since 1986. On average for all the observed GIC, a mean net frontal retreat for 1986–2011 of 0.010 ± 0.006 km yr−1 and a mean areal recession of around 1% per year occurred; overall for all observed GIC, a mean recession rate of 27 ± 24% occurred based on the 1986 GIC area. Since 1986, five GIC melted away in the Ammassalik area.

  7. Relaxation of localized excitons in CdSe/ZnSe heterostructures containing quantum islands of different sizes

    Energy Technology Data Exchange (ETDEWEB)

    Wachter, S.; Dal Don, B.; Schmidt, M.; Baldauf, M.; Dinger, A.; Kurtz, E.; Klingshirn, C.; Kalt, H. [Karlsruhe Univ. (T.H.) (Germany). Inst. fuer Angewandte Physik

    2001-03-08

    We report on localization dynamics of excitons in ensembles of self-organized CdSe islands embedded in ZnSe. The experimental methods employed are temperature dependent, spatially-resolved photoluminescence ({mu}-PL), spatially-integrated PL (macro-PL), as well as time-resolved PL (TRPL). We see the often observed non-monotonous shift of the PL maximum with temperature which we can explain by a redistribution of the excitons amongst the islands. The measured shift is compared with the exact shift of the bandgap deduced from {mu}-PL measurements and is found to depend strongly on island size and distribution. These transport processes are recovered in the temporal evolution of the PL. The decay time of the spectrally integrated PL reaches its maximum at exactly the same temperature at which the redshift of the macro-PL turns into a blueshift. (orig.)

  8. Glacial to Holocene climate changes in Easter Island (SE Pacific, 27

    Science.gov (United States)

    Sáez, A.; Giralt, S.; Valero-Garcés, B. L.; Moreno, A.; Bao, R.; Pueyo, J. J.; Hernández, A.

    2009-04-01

    Sedimentary architecture and paleoclimate for the last 34 000 cal years BP and human activity during the last 850 years have been reconstructed from the Raraku Lake sediments in Easter Island (SE Pacific, 27°S) using a high-resolution multiproxy study of 8 cores, 36 AMS radiocarbon dates and correlation with previous core studies. The Last Glacial period was characterized by cold and relatively humid conditions between 34 to 28 cal kyr BP. High lake levels and clastic input dominated sedimentation in Raraku Lake and a relatively open forest developed at that time. Between 28 and 17.3 cal kyr BP, including LGM period, colder conditions contributed to a reduction of the tree coverage in the island. The end of Glacial Period occurred at 17.3 cal kyr BP and was characterized by a sharp decrease in lake level conducive to the development of major floods due to the erosion of littoral sediments. The Deglaciation Period (Termination 1) occurred between 17.3 and 12.5 cal kyr BP, characterized by an increase in lake productivity, a decrease in the terrigenous input and a rapid lake level recovery inaugurating a period of intermediate lake levels. During this period, the dominance of algal lamination is interpreted as a warmer climate. The timing and duration of this warming trend in Easter Island broadly agrees with other mid- and low latitude circum South Pacific terrestrial records. The early Holocene was characterized by low lake levels. The lake level dropped during the early Holocene (ca. 9.5 cal kyr BP) and peatbog and shallow lake conditions dominated till mid Holocene, partially caused by the colmatation of the lacustrine basin. During the mid Holocene an intense drought occurred that led to a persistent low water table period, subaerial exposure and erosion of some of the sediments, generating a sedimentary gap in the Raraku sequence, from 4.2 to 0.8 cal kyr BP. The palm deforestation of the Easter Island, attributed to the human colonization at about 850 cal yr

  9. Late Cretaceous lithospheric extension in SE China: Constraints from volcanic rocks in Hainan Island

    Science.gov (United States)

    Zhou, Yun; Liang, Xinquan; Kröner, Alfred; Cai, Yongfeng; Shao, Tongbin; Wen, Shunv; Jiang, Ying; Fu, Jiangang; Wang, Ce; Dong, Chaoge

    2015-09-01

    Petrological, geochemical and in-situ zircon U-Pb dating and Hf-isotope analyses have been carried out on a suite of basalt-andesite-rhyolite volcanic rocks exposed in the Liuluocun area, Hainan Island, SE China. Zircon analyses show that these volcanic rocks crystallized in the Early Cretaceous (ca. 102 Ma). The basalts are characterized by low MgO contents and mg-numbers but high rare earth element, high field strength element and large ion lithophile element contents and Nb-Ta negative anomalies. They have relatively uniform Sr-Nd isotope compositions with εNd(t) values of - 4.09 to - 3.63. The andesites show enrichment of high field strength element and rare earth element with negligible Eu anomalies. They have εNd(t) values of - 2.35 to - 3.88 and εHf(t) values of - 9.73 to - 1.13. The rhyolites have high K2O and SiO2 contents. They are characterized by prominent Eu, P and Ti negative anomalies and enrichment in large ion lithophile element, and show εHf(t) values of - 7.51 to + 0.47 and εNd(t) values of - 2.49 to - 2.69. Petrogenetic analysis indicates that the Liuluocun volcanic rocks were produced by incomplete reaction of the mantle wedge peridotite with felsic melts derived from partial melting of subducted sediment. All these characteristics, combined with geological observations, suggest that their formation was related to regional lithospheric extension in the South China Craton during the Early Cretaceous, which may have been caused by subduction of the Paleo-Pacific plate beneath the continental plate of China.

  10. Remote sensing of the urban heat island and its changes in Xiamen City of SE China

    Institute of Scientific and Technical Information of China (English)

    XU Han-qiu; CHEN Ben-qing

    2004-01-01

    World-wide urbanization has significantly modified the landscape, which has important climatic implicationsacross all scales due to the simultaneous removal of natural land cover and introduction of urban materials. Thisresulted in a phenomenon known as an urban heat island(UHI). A study on the UHI in Xiamen of China was carriedout using remote sensing technology. Satellite thermal infrared images were used to determine surface radianttemperatures. Thermal remote sensing data were obtained from band 6 of two Landsat TM/ETM+ images of 1989and 2000 to observe the UHI changes over 1 1-year period. The thermal infrared bands were processed throughseveral image enhancement technologies. This generated two 3-dimension-perspective images of Xiamen's urbanheat island in 1989 and 2000, respectively, and revealed heat characteristics and spatial distribution features of theUHI. To find out the change of the UHI between 1989 and 2000, the two thermal images were first normalized andscaled to seven grades to reduce seasonal difference and then overlaid to produce a difference image by subtractingcorresponding pixels. The difference image showed an evident development of the urban heat island in the 11 years.This change was due largely to the urban expansion with a consequent alteration in the ratio of sensible heat flux tolatent heat flux. To quantitatively compare UHI, an index called Urban-Heat-Island Ratio Index(URI) was created.It can reveal the intensity of the UHI within the urban area. The calculation of the index was based on the ratio ofUHI area to urban area. The greater the index, the more intense the UHI was. The calculation of the index for theXiamen City indicated that the ratio of UHI area to urban area in 2000 was less than that in 1989. High temperaturesin several areas in 1989 were reduced or just disappeared, such as those in old downtown area and GulangyuIsland. For the potential mitigation of the UHI in Xiamen, a long-term heat island reduction strategy of

  11. Glacial to Holocene climate changes in the SE Pacific. The Raraku Lake sedimentary record (Easter Island, 27°S)

    Science.gov (United States)

    Sáez, Alberto; Valero-Garcés, Blas L.; Giralt, Santiago; Moreno, Ana; Bao, Roberto; Pueyo, Juan J.; Hernández, Armand; Casas, David

    2009-12-01

    Easter Island (SE Pacific, 27°S) provides a unique opportunity to reconstruct past climate changes in the South Pacific region based on terrestrial archives. Although the general climate evolution of the south Pacific since the Last Glacial Maximum (LGM) is coherent with terrestrial records in southern South America and Polynesia, the details of the dynamics of the shifting Westerlies, the South Pacific Convergence Zone and the South Pacific Anticyclone during the glacial-interglacial transition and the Holocene, and the large scale controls on precipitation in tropical and extratropical regions remain elusive. Here we present a high-resolution reconstruction of lake dynamics, watershed processes and paleohydrology for the last 34 000 cal yrs BP based on a sedimentological and geochemical multiproxy study of 8 cores from the Raraku Lake sediments constrained by 22 AMS radiocarbon dates. This multicore strategy has reconstructed the sedimentary architecture of the lake infilling and provided a stratigraphic framework to integrate and correlate previous core and vegetation studies conducted in the lake. High lake levels and clastic input dominated sedimentation in Raraku Lake between 34 and 28 cal kyr BP. Sedimentological and geochemical evidences support previously reported pollen data showing a relatively open forest and a cold and relatively humid climate during the Glacial period. Between 28 and 17.3 cal kyr BP, including the LGM period, colder conditions contributed to a reduction of the tree coverage in the island. The coherent climate patterns in subtropical and mid latitudes of Chile and Eastern Island for the LGM (more humid conditions) suggest stronger influence of the Antarctic circumpolar current and an enhancement of the Westerlies. The end of Glacial Period occurred at 17.3 cal kyr BP and was characterized by a sharp decrease in lake level conducive to the development of major flood events and erosion of littoral sediments. Deglaciation (Termination

  12. Quality Aspects of a Marine Aggregate Deposit off the SE Euboea Island, Greece, for its Exploitation - Preliminary Results

    Science.gov (United States)

    Anastasatou, Marianthi; Kapsimalis, Vasilios; Stamatakis, Michael; Tsoutsia, Antonia; Poulos, Serafeim; Rousakis, Grigoris; Karditsa, Aikaterini; Petrakis, Stelios; Aspiotis, Konstantinos; Papavlasopoulou, Nafsika; Stamatakis, Giorgos

    2015-04-01

    Aggregates are inert materials, such as terrestrial or marine sand and gravel, composed mainly of limestone, igneous rocks and sandstone. There is an international trend of increasing demand for aggregates during the last 30 years. Thus, marine aggregate (MA) demand has been displayed a remarkably increased due to limited terrestrial deposits and strict environmental issues related to their exploitation, induced by mining legislation. Regarding offshore MA extraction, important physical and biological seabed impacts that may persist long after the completion of the MA dredging, should be addressed, according to European directives, that deal with aspects such as restoration of the influenced subaqueous mining area. The present contribution focuses on the qualitative determination of the marine sediments on inner continental shelf of SE Euboea (central Aegean Sea), concerning primarily its silica content and secondarily the various environmental issues, in order to evaluate whether or not this subaqueous deposit fulfils the requirements for its exploitation. This MA deposit was found during the implementation of the research project THALES-MARE (MIS 375655) and after taking into consideration the presence of highly siliceous coastal lithology of the South Euboea Island. The area belongs to the Attico-Cycladic geotectonic zone, and especially in the Blueschist Unit, Styra and Ochi nappes. It consists mainly of metamorphosed clastic siliceous sedimentary and calcareous, mafic and felsic volcanic rocks and serpentinites. Sixteen representative samples were analysed out of 48 were collected in June 2014, during the scientific cruise of the M/V Aegaio (Hellenic Centre for Marine Research). The grain size analysis shows that seabed sediments are granulometrically classified mostly as sand, with contaminants of finer fractions and with the sand content often to be >90%. X-Ray Diffraction analysis revealed that the predominant crystalline phase is quartz (often >70

  13. Mesophotic coral environment monitoring and habitat surveys at the Main Hawaiian Island Chain (SE1006, EK60)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The goals of the cruise were to collect a variety of data to assess the status of mesophotic corals in waters between the islands of Maui, Kahoolawe, Lanai, and...

  14. An Alternative Georoute: Approaching the Geological Heritage of the SE Part of Milos Island, Greece, via Hiking, Kayaking and Snorkeling

    Science.gov (United States)

    Mavrogonatos, Constantinos; Galanopoulos, Evangelos; Anastasatou, Marianthi; Chadjimpaloglou, Petros; Xydous, Stamatios

    2015-04-01

    Milos Island is located at the southwest edge of the Cyclades island complex, in the central part of the Aegean archipelago. It is part of the modern South Aegean Volcanic Arc (SAVA), which belongs to the Hellenic subduction zone. This on-going process has resulted in the coexistence of complex geological formations and geodynamic phenomena with sceneries of incomparable natural beauty, in many areas along the arc. Among them, Milos Island is widely known to be a place of astonishing geological and natural wealth, combined with a cultural heritage that dates back to the 8th millennium BC. As geotourism has been rapidly evolving worldwide over the last years, Milos Island was among the first places in Greece that developed a network of geotrails and featured many sites of special interest in terms of geology, volcanology and geoarchaeology. This study proposes an original georoute through land and sea, which aims t? emerge both overland and underwater areas of special interest. It is a novel way to approach the geological and cultural wealth of Milos and focuses on the Aghia Kiriaki area, at the South part of the island. This alternative georoute includes hiking, kayaking and snorkeling, and anyone who follows it, can be guided to a significant number of important geological, volcanic, morphological and geoarcheological sites, in a relatively narrow area, combining athletic activities as well. The proposed georoute has a total length of 3,2 km and an estimated time of completion of about 4 hours. It starts from Aghia Kiriaki area, where visitors can see remnants of one of the island's collapsed calderic domes in a panoramic view towards the East. In the same site, volcanic emanations create impressive scenery, which introduces the participants to aspects of the island's geologic and volcanic history. After about 800 meters of hiking, throughout an area that is dominated by products of phreatic eruptions, Aghia Kiriaki beach is the next stop. Impressive findings of

  15. Macrophthalmus graeffei A. Milne Edwards, 1873 (Crustacea: Brachyura: Macrophthalmidae: a new Indo-Pacific guest off Rhodes Island (SE Aegean Sea, Greece

    Directory of Open Access Journals (Sweden)

    M.A. PANCUCCI-PAPADOPOULOU

    2012-12-01

    Full Text Available A new alien crab, the macrophthalmid Macrophthalmus graeffei, is reported from the eastern coastline of Rhodes Island. The species, of Indo-West Pacific origin, is known from muddy sediments up to about 80 m depth. In the Mediterranean, its presence has been observed along Levantine coasts as well as along the Turkish coast of the Aegean Sea.Macrophthalmus graeffei increases to twelve the number of alien brachyurans present in the Hellenic SE Aegean Sea, ten of them having Indo-Pacific origin.

  16. Insights on the Quaternary Tectonic Evolution of the SE Indonesia Arc-Continent Collision from the Study of Uplifted Coral Terraces on Sumba Island.

    Science.gov (United States)

    Leclerc, F.; Rigaud, S.; Chiang, H. W.; Djamil, Y. S.; Herdiyanti, T.; Johnny, J.; Ildefonso, S.; Meilano, I.; Bijaksana, S.; Abidin, H. Z.; Tapponnier, P.; Wang, X.

    2015-12-01

    Sumba Island is uniquely positioned within the Sunda-Banda forearc, at the transition between oceanic subduction and arc-continent collision. There, the convergence between the Sunda and Australian plates is accommodated along at least three major structures: the megathrust, the Savu backthrust located south of Sumba and the Flores backthrust located north of the volcanic arc. The incipient collision in the vicinity of Sumba is responsible for coastal vertical movements. Quaternary reefal deposits form spectacular uplifted flights of terraces, which directly overlie Mid Miocene - Early Pliocene deep carbonate and volcaniclastic rocks at elevations exceeding 500m. Although aerial fossil reefs extensively rim the northern and eastern coasts of Sumba, studies have been limited to Cape Laundi where an uplift rate of 0.2-0.5 m/kyr is estimated for the last 400 kyr, partly on the basis of alpha-spectrometric U/Th dating. At the island scale, the relief morphology and the hydrographic network point to a N-S asymmetry, indicating a general tilt toward the north. A subducting seafloor asperity and south-dipping normal faults have been postulated to generate this asymmetry. However as the pattern and kinematics of the deformation remain partially determined, structures and processes capable of driving such deformation and accommodating the nascent collision may be undisclosed. New topographic data coupled with field observations and coral mass-spectrometric U/Th dating allow investigating the morphology, stratigraphy and age of the fossil reef terraces at the island scale. Tectonic structures disrupting the topography are identified and their activities are relatively dated with respect to fossil reef terraces. The deformation pattern of Sumba is characterized, especially in Cape Laundi where the uplift rate is re-evaluated. Through a multi-disciplinary study, we intend to reconstruct the tectonic evolution of Sumba island and, at a larger scale, of the collision in SE

  17. Biostratigraphic evidence of dramatic Holocene uplift of Robinson Crusoe Island, Juan Fernández Ridge, SE Pacific Ocean

    Directory of Open Access Journals (Sweden)

    P. Sepúlveda

    2014-09-01

    Full Text Available A study of the biostratigraphy and sedimentology of Holocene deposits on Robinson Crusoe Island (RCI on the Juan Fernández Ridge (JFR indicates that a~dramatic but localized uplift occurred since 8000 BP, at a rate of about 8.5 mm yr−1. In fact, supratidal flats and sand layers with marine gastropods (mostly Nerita sp. are now exposed ca. 70 m a.s.l., and covered by transitional dunes. The last volcanic activity on RCI occurred at ca. 0.8 Ma (active hotspot located 280 km further west and there is no sign of a compensating bulge that explains this uplift, isobaths of the sea floor instead suggesting general subsidence. However, modeling indicates that large-scale landslides followed by isostatic rebound are a viable explanation, partially reflected in the low-resolution bathymetry of the area.

  18. Biostratigraphic evidence of dramatic Holocene uplift of Robinson Crusoe Island, Juan Fernández Ridge, SE Pacific Ocean

    Science.gov (United States)

    Sepúlveda, P.; Le Roux, J. P.; Lara, L. E.; Orozco, G.; Astudillo, V.

    2014-09-01

    A study of the biostratigraphy and sedimentology of Holocene deposits on Robinson Crusoe Island (RCI) on the Juan Fernández Ridge (JFR) indicates that a~dramatic but localized uplift occurred since 8000 BP, at a rate of about 8.5 mm yr-1. In fact, supratidal flats and sand layers with marine gastropods (mostly Nerita sp.) are now exposed ca. 70 m a.s.l., and covered by transitional dunes. The last volcanic activity on RCI occurred at ca. 0.8 Ma (active hotspot located 280 km further west) and there is no sign of a compensating bulge that explains this uplift, isobaths of the sea floor instead suggesting general subsidence. However, modeling indicates that large-scale landslides followed by isostatic rebound are a viable explanation, partially reflected in the low-resolution bathymetry of the area.

  19. Biostratigraphic evidence for dramatic Holocene uplift of Robinson Crusoe Island, Juan Fernández Ridge, SE Pacific Ocean

    Science.gov (United States)

    Sepúlveda, P.; Le Roux, J. P.; Lara, L. E.; Orozco, G.; Astudillo, V.

    2015-03-01

    Hotspot oceanic islands typically experience subsidence due to several processes related to migration of the oceanic plate away from the mantle plume and surface flexural loading. However, many other processes can interrupt subsidence, some of which may be associated with catastrophic events. A study of the biostratigraphy and sedimentology of Holocene deposits on Robinson Crusoe Island (RCI) on the Juan Fernández Ridge (JFR) indicated that dramatic uplift has occurred since 8000 years BP, at a rate of about 8.5mm yr-1. This is evidenced by supratidal flats with tepee structures and sand layers containing marine gastropods (mostly Nerita sp.) that are now exposed ca. 70 m a.s.l. The active hotspot is located 280 km further west and the last volcanic activity on RCI occurred at ca. 800 000 years BP. Long-term subsidence is evidenced by deep submerged marine abrasion terraces at RCI. As no direct evidence was found for the existence of a compensating bulge generated by the present hotspot upon which RCI would be situated, it must be concluded that subsidence in the wake of the mantle plume beneath the migrating plate was interrupted by very rapid uplift, but on a scale that did not fully compensate for the previous subsidence. This can be attributed to large-scale landslides followed by isostatic rebound, although this is only vaguely reflected in the low-resolution bathymetry of the area. To determine if this mechanism produced the uplift, a detailed bathymetric survey of the area will be required. If such a survey confirms this hypothesis, it may have implications for the short-term dynamics of vertical variations of oceanic edifices and their related effects on ecosystems and human population.

  20. Impact of Lanice conchilega on seafloor microtopography off the island of Sylt (German Bight, SE North Sea)

    Science.gov (United States)

    Schönke, M.; Feldens, P.; Wilken, D.; Papenmeier, S.; Heinrich, C.; von Deimling, J. Schneider; Held, P.; Krastel, S.

    2016-12-01

    This study presents a new in situ method to explore the impact of macrofauna on seafloor microtopography and corresponding microroughness based on underwater laser line scanning. The local microtopography was determined with mm-level accuracy at three stations colonised by the tubeworm Lanice conchilega offshore of the island of Sylt in the German Bight (south-eastern North Sea), covering approximately 0.5 m2 each. Ground truthing was done using underwater video data. Two stations were populated by tubeworm colonies of different population densities, and one station had a hydrodynamically rippled seafloor. Tubeworms caused an increased skewness of the microtopography height distribution and an increased root mean square roughness at short spatial wavelengths compared with hydrodynamic bedforms. Spectral analysis of the 2D Fourier transformed microtopography showed that the roughness magnitude increased at spatial wavelengths between 0.020 and 0.003 m independently of the tubeworm density. This effect was not detected by commonly used 1D roughness profiles but required consideration of the complete spectrum. Overall, the results reveal that new indicator variables for benthic organisms may be developed based on microtopographic data. An example demonstrates the use of local slope and skewness to detect tubeworms in the measured digital elevation model.

  1. Architecture and morphology of coral reef sequences. Modeling and observations from uplifting islands of SE Sulawesi, Indonesia

    Science.gov (United States)

    Pastier, Anne-Morwenn; Husson, Laurent; Bezos, Antoine; Pedoja, Kevin; Elliot, Mary; Hafidz, Abdul; Imran, Muhammad; Lacroix, Pascal; Robert, Xavier

    2016-04-01

    During the Late Neogene, sea level oscillations have profoundly shaped the morphology of the coastlines of intertropical zones, wherein relative sea level simultaneously controlled reef expansion and erosion of earlier reef bodies. In uplifted domains like SE Sulawesi, the sequences of fossil reefs display a variety of fossil morphologies. Similarly, the morphologies of the modern reefs are highly variable, including cliff notches, narrow fringing reefs, wide flat terraces, and barriers reefs. In this region, where uplift rates vary rapidly laterally, the entire set of morphologies is displayed within short distances. We developed a numerical model that predicts the architecture of fossil reefs sequences and apply it to observations from SE Sulawesi, accounting -amongst other parameters- for reef growth, coastal erosion, and uplift rates. The observations that we use to calibrate our models are mostly the morphology of both the onshore (dGPS and high-resolution Pleiades DEM) and offshore (sonar) coast, as well as U-Th radiometrically dated coral samples. Our method allows unravelling the spatial and temporal evolution of large domains on map view. Our analysis indicates that the architecture and morphology of uplifting coastlines is almost systematically polyphased (as attested by samples of different ages within a unique terrace), which assigns a primordial role to erosion, comparable to reef growth. Our models also reproduce the variety of modern morphologies, which are chiefly dictated by the uplift rates of the pre-existing morphology of the substratum, itself responding to the joint effects of reef building and subsequent erosion. In turn, we find that fossil and modern morphologies can be returned to uplift rates rather precisely, as the parametric window of each specific morphology is often narrow.

  2. High resolution sparker evidence of sediment transport patterns and Late Quaternary structures between the islands of Sylt and Rømø, SE. Northsea

    Science.gov (United States)

    Boldreel, L. O.; Kuijpers, A.; Madsen, E. B.; Hass, C.; Rasmussen, R.; Lindhorst, S.; Bartholdy, J.

    2009-04-01

    The off-shore northern part of the barrier island Sylt in the southeastern North Sea has been investigated using high-resolution sparker seismics. Bedforms identified in the seismic data reveal the postglacial sedimentary regime and actual sediment dynamics. The area can be divided into three parts. The North Sea sector of the area is characterized by northward sediment bypass as a result of strong long-shore (tidal) currents heading towards the Lister Deep, the tidal inlet between Sylt and the Danish island of Rømø. The Lister Deep is characterized by a major dune field with up to 8 m heigh dunes with a wavelength of 270 m indicative of easterly sediment transport (flood dominated). Further to the northwest in the outer delta a dune field suggesting westerly sediment transport is found. The northern part of the Lister Deep is formed by a marked erosion channel with a depth of 30-40 msec. The two dune fields are separated by minor structures. East of Sylt the area is characterized by presence of dunes of smaller dimensions than those observed in the Lister Deep. In the eastern and western part of the channel system present here, the dunes indicate sediment transport towards south (flood dominated), whereas in the central part of the area northward transport is indicated. Based on the bedform pattern a general current regime can be described. Northward sediment transport along the westcoast of Sylt following the coastline leads into the Lister Deep, where under the influence of the coastal configuration and Coriolis effect a major dune field has been formed along the north coast of Sylt. The outgoing (ebb) current comes from the Wadden Sea area towards the east and enters the northern part of the Lister Deep, where the erosion channel is found. Here the current is responsibly for the formation of the west migrating dunefield in the Lister Deep and towards the outer delta the current turns north and large amounts of sediments are likely deposited. Thus the model

  3. 2015 Hawaii SE Island UAS Orthomosaic

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This imagery was captured September 20, 2015 for the Hawaiian Monk Seal Research Program. Unmanned Aircraft Systems (UAS) are being tested to assess their...

  4. Returning from the Horizon: Introducing Urban Island Studies

    Directory of Open Access Journals (Sweden)

    Xavier Barceló Pinya

    2015-12-01

    Full Text Available Island studies tends to focus on peripheral, isolated, and marginal aspects of island communities, while urban studies has showed scant awareness of islandness: Although many people research cities on islands, there is little tradition of researching island cities or urban archipelagos per se. Island cities (densely populated small islands and population centres of larger islands and archipelagos nevertheless play import cultural, economic, political, and environmental roles on local, regional, and global scales. Many major cities and ports have developed on small islands, and even villages can fulfil important urban functions on lightly populated islands. Island concepts are also deployed to metaphorically describe developments in urban space. The journal Urban Island Studies explores island and urban processes around the world, taking an island approach to urban research and an urban approach to island research.

  5. « L'île du soleil » : une parenthèse de temporalité insolite The « Island of the Sun »: an Unusual Temporal Digression

    Directory of Open Access Journals (Sweden)

    Hélène Fragaki

    2010-12-01

    Full Text Available Dans le livre II de sa Bibliothèque historique, Diodore de Sicile raconte comment Iambule a découvert une île heureuse lors d’un voyage à travers l’Arabie. Ce récit fabuleux, qui peut être défini comme un roman utopique au sens large du terme, est donc délibérément intégré dans une œuvre qui se veut historique. Sa version originale, attribuée à Iambule, remonte à l’époque hellénistique et ne peut être postérieure au milieu du Ier s. av. J.-C., date à laquelle la Bibliothèque historique a été rédigée. Au début du roman, une série d’aventures extraordinaires anime le temps et l’éclaire d’une lueur mystérieuse en faisant intervenir des intervalles déterminés par des chiffres symboliques. On est ainsi introduit à une dimension temporelle utopique, celle de l’île heureuse : immuable, continu et homogène, le temps n’est que le support d’activités constructives, répétitives et rigoureusement rythmées ; il est dépourvu de tout aspect angoissant ou ravageur et n’amène que la croissance et la prospérité, d’autant plus que la vie est excessivement longue et la mort dédramatisée. Cette parenthèse temporelle paisible, dont la clôture est également marquée par des durées symboliques, apparaît comme une réaction à un temps réel violemment agité. Toutefois, elle n’est pas aussi statique qu’il ne paraît à première vue, dans la mesure où elle s’insère dans le mouvement de la temporalité historique et où elle est accessible par le temps bien plus turbulent de l’aventure et du voyage.In volume 2 of his book Bibliotheca Historica, Diodorus of Sicily tells the story of Iamboulos who discovered a blissful island while traveling through Arabia. This fabulous story, which can be defined as a utopian novel in the broader sense of the term, is therefore deliberately incorporated into a book which is supposed to be historical. Its original version, attributed to Iamboulos, dates

  6. Timing, origin and emplacement dynamics of mass flows offshore of SE Montserrat in the last 110 ka: implications for landslide and tsunami hazards, eruption history, and volcanic island evolution

    OpenAIRE

    Trofimovs, J.; Talling, P. J.; Fisher, J. K.; Sparks, R.S.J.; Watt, S.F.L.; Hart, M. B.; Smart, C.; Le Friant, A.; Cassidy, M.; Moreton, S.G.; Leng, M.J.

    2013-01-01

    Mass flows on volcanic islands generated by volcanic lava dome collapse and by larger volume flank collapse, can be highly dangerous locally and may generate tsunamis that threaten a wider area. It is therefore important to understand their frequency, emplacement dynamics and relationship to volcanic eruption cycles. The best record of mass flow on volcanic islands may be found offshore, where most material is deposited, and where intervening hemipelagic sediment aids dating. Here we analyse ...

  7. SE PREVENINDO?

    Directory of Open Access Journals (Sweden)

    Ana Débora Assis Moura

    2010-01-01

    Full Text Available Este estudio tuvo como objetivo verificar el comportamiento de las prostitutas en relación a la prevención de enfermedades de transmisión sexual y del Síndrome de Inmunodeficiencia Adquirida-SIDA, así como investigar cómo se previenen de esas enfermedades. Se trata de una investigación exploratoria, con enfoque cualitativo, llevada a cabo en la Asociación de las Prostitutas en Ceará, Brazil, en septiembre de 2008, a través de una encuesta con 25 prostitutas. El análisis de los datos se hizo según el análisis de contenido, después de ser agrupados en cuatro categorías: conocimiento sobre las enfermedades de transmisión sexual/SIDA; convivencia con la(s enfermedad(es; prevención de la enfermedad de transmisión sexual/SIDA; y el uso de drogas. Se concluyó que las prostitutas no usan preservativos en todas las relaciones sexuales, por lo tanto, las enfermedades de transmisión sexual representan una realidad; la desinformación sobre la(s enfermedad(es es notable; el consumo de drogas lícitas e ilícitas es frecuente entre ellas, factor que las expone a situaciones más vulnerables con relación al VIH/SIDA.

  8. Se los por se lo

    Directory of Open Access Journals (Sweden)

    José Luis Rivarola

    1985-12-01

    Full Text Available El sistema de la conjugación "objetiva" plantea interesantesproblemas que fueron tratados en parte por K. Heger (1966 en suestudio comparativo del francés y del español. De la comparaciónse desprende, por ejemplo, que en español hay un cierto número deambigüedades que no permiten establecer un "paradigma tan completo y unívoco" como en el caso del francés. Dentro de estas ambigüedades se encuentran las que propicia el gramema se: "El morfema [gramema] se funciona no sólo como pronombre reflexivo, sinotambién como variante combinatoria del pronombre personal complemento indirecto de la tercera persona.

  9. Galapagos Islands

    Science.gov (United States)

    2002-01-01

    This true-color image of the Galapagos Islands was acquired on March 12, 2002, by the Moderate-resolution Imaging Spectroradiometer (MODIS), flying aboard NASA's Terra satellite. The Galapagos Islands, which are part of Ecuador, sit in the Pacific Ocean about 1000 km (620 miles) west of South America. As the three craters on the largest island (Isabela Island) suggest, the archipelago was created by volcanic eruptions, which took place millions of years ago. Unlike most remote islands in the Pacific, the Galapagos have gone relatively untouched by humans over the past few millennia. As a result, many unique species have continued to thrive on the islands. Over 95 percent of the islands' reptile species and nearly three quarters of its land bird species cannot be found anywhere else in the world. Two of the more well known are the Galapagos giant tortoise and marine iguanas. The unhindered evolutionary development of the islands' species inspired Charles Darwin to begin The Origin of Species eight years after his visit there. To preserve the unique wildlife on the islands, the Ecuadorian government made the entire archipelago a national park in 1959. Each year roughly 60,000 tourists visit these islands to experience what Darwin did over a century and a half ago. Image courtesy Jacques Descloitres, MODIS Land Rapid Response Team at NASA GSFC

  10. Island Armor

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    A new law has been enacted to protect China’s islands from destruction After three rounds of deliberations that began in June 2009, the National People’s Congress (NPC) Standing Committee endorsed the Law of Sea

  11. Beautiful hainan island

    Institute of Scientific and Technical Information of China (English)

    汪伦

    2002-01-01

    Hainan Island is the second largest island in China. It is situated on the Nanhai Sea(South China Sea) and faces Guangdong Province across Qiongzhou Strait (海峡).Hainan Province was established (建立)in 1988. It consists of Hainan Island, Xisha Islands, Zhongsha Islands, Nansha Islands and the vast sea areas around them.Its total area is 340,000 km2.

  12. A NEW SPECIES OF RANINOIDES (CRUSTACEA: DECAPODA:RANINIDAE) FROM OFF THE SOUTHEASTERN COAST OF HAINAN ISLAND AND NANSHA ISLANDS

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Raninoides longifions new species, off SE coast of Hainan Island, dorsal surface of carapace with an arched granular edge across carapace between the anterolateral teeth, median frontal tooth longest, second frontal teeth subquadrate.

  13. Shemya Island prehistory

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The 752 artifacts described in this paper are from 5 sites on Shemya Island. Artifactual evidence suggests the island had a small resident population and was...

  14. Classifying Pacific islands

    Science.gov (United States)

    Nunn, Patrick D.; Kumar, Lalit; Eliot, Ian; McLean, Roger F.

    2016-12-01

    An earth-science-based classification of islands within the Pacific Basin resulted from the preparation of a database describing the location, area, and type of 1779 islands, where island type is determined as a function of the prevailing lithology and maximum elevation of each island, with an island defined as a discrete landmass composed of a contiguous land area ≥1 ha (0.01 km2) above mean high-water level. Reefs lacking islands and short-lived (ocean setting as well as the biological attributes of Pacific islands. It may also be used in spatial assessments of second-order phenomena associated with the islands, such as their vulnerability to various disasters, coastal erosion, or ocean pollution as well as human populations, built infrastructure and natural resources.

  15. Contenha-se, se for capaz

    Directory of Open Access Journals (Sweden)

    Mirna Feitoza Pereira

    2008-11-01

    Full Text Available Em O Instinto da Linguagem, Steven Pinker discorre sobre sua célebre tese: a linguagem não é a mais prodigiosa invenção cultural humana. Ela é uma peça da constituição biológica do cérebro. A linguagem é uma habilidade complexa e especializada, que se desenvolve espontaneamente na criança, sem qualquer esforço consciente ou instrução formal, que se manifesta sem que se perceba sua lógica subjacente, que é qualitativamente a mesma em todo indiví­duo, e que difere de capacidades mais gerais de processamento de informações ou de comportamento inteligente. Para Pinker, a concepção de linguagem como um tipo de instinto transmite a idéia de que as pessoas sabem falar mais ou menos da mesma maneira que as aranhas sabem tecer suas teias. Ele apóia suas idéias em Darwin e Chomsky. Palavras-chave linguagem, gramática universal, evolução Abstract In Language Instinct, Steven Pinker argues about his famous thesis: language is not the most prodigious human cultural invention. It is a distinct piece of the biological constitution of the brain. Language is a complex, specialized skill, which develops spontaneously in the child, without conscious effort or formal instruction. It reveals itself without awareness of its underlying logic, which is qualitatively the same in every individual, and which is distinct from more general abilities of information processing of intelligent behavior. According to Pinker, the conception of language as a kind of instinct conveys the idea that people know how to talk in more or less the same way as spiders know how to spin webs. His thesis is founded in Darwin and Chomsky-s theories. Keywords language, universal grammar, evolution

  16. Arctic ice islands

    Energy Technology Data Exchange (ETDEWEB)

    Sackinger, W.M.; Jeffries, M.O.; Lu, M.C.; Li, F.C.

    1988-01-01

    The development of offshore oil and gas resources in the Arctic waters of Alaska requires offshore structures which successfully resist the lateral forces due to moving, drifting ice. Ice islands are floating, a tabular icebergs, up to 60 meters thick, of solid ice throughout their thickness. The ice islands are thus regarded as the strongest ice features in the Arctic; fixed offshore structures which can directly withstand the impact of ice islands are possible but in some locations may be so expensive as to make oilfield development uneconomic. The resolution of the ice island problem requires two research steps: (1) calculation of the probability of interaction between an ice island and an offshore structure in a given region; and (2) if the probability if sufficiently large, then the study of possible interactions between ice island and structure, to discover mitigative measures to deal with the moving ice island. The ice island research conducted during the 1983-1988 interval, which is summarized in this report, was concerned with the first step. Monte Carlo simulations of ice island generation and movement suggest that ice island lifetimes range from 0 to 70 years, and that 85% of the lifetimes are less then 35 years. The simulation shows a mean value of 18 ice islands present at any time in the Arctic Ocean, with a 90% probability of less than 30 ice islands. At this time, approximately 34 ice islands are known, from observations, to exist in the Arctic Ocean, not including the 10-meter thick class of ice islands. Return interval plots from the simulation show that coastal zones of the Beaufort and Chukchi Seas, already leased for oil development, have ice island recurrences of 10 to 100 years. This implies that the ice island hazard must be considered thoroughly, and appropriate safety measures adopted, when offshore oil production plans are formulated for the Alaskan Arctic offshore. 132 refs., 161 figs., 17 tabs.

  17. Researching Pacific island livelihoods:

    DEFF Research Database (Denmark)

    Egelund Christensen, Andreas; Mertz, Ole

    2010-01-01

    Small island literature is vast in focus and aim, and is rooted in many different disciplines. The challenge is to find common grounds for researching small islands conceptually and theoretically. The aim of this article is to comment on how to research small islands, including a discussion on co...... and interdisciplinary in focus and link socio-economic and ecological processes of small island societies at temporal and analytical scales....

  18. The Islands, Barbados

    NARCIS (Netherlands)

    Drieman, R.; Hinborch, M.; Monden, M.; Vendrik, E.A.J.

    2009-01-01

    Master project report. In Barbados the problem arose of lack of space for development on the existing shoreline. Therefore the project "The Islands" has been conceptualized. In front of the west coast of Barbados, a group of artificial islands will be created. On the islands there will be space for

  19. SE-FIT

    Science.gov (United States)

    Chen, Yongkang; Weislogel, Mark; Schaeffer, Ben; Semerjian, Ben; Yang, Lihong; Zimmerli, Gregory

    2012-01-01

    The mathematical theory of capillary surfaces has developed steadily over the centuries, but it was not until the last few decades that new technologies have put a more urgent demand on a substantially more qualitative and quantitative understanding of phenomena relating to capillarity in general. So far, the new theory development successfully predicts the behavior of capillary surfaces for special cases. However, an efficient quantitative mathematical prediction of capillary phenomena related to the shape and stability of geometrically complex equilibrium capillary surfaces remains a significant challenge. As one of many numerical tools, the open-source Surface Evolver (SE) algorithm has played an important role over the last two decades. The current effort was undertaken to provide a front-end to enhance the accessibility of SE for the purposes of design and analysis. Like SE, the new code is open-source and will remain under development for the foreseeable future. The ultimate goal of the current Surface Evolver Fluid Interface Tool (SEFIT) development is to build a fully integrated front-end with a set of graphical user interface (GUI) elements. Such a front-end enables the access to functionalities that are developed along with the GUIs to deal with pre-processing, convergence computation operation, and post-processing. In other words, SE-FIT is not just a GUI front-end, but an integrated environment that can perform sophisticated computational tasks, e.g. importing industry standard file formats and employing parameter sweep functions, which are both lacking in SE, and require minimal interaction by the user. These functions are created using a mixture of Visual Basic and the SE script language. These form the foundation for a high-performance front-end that substantially simplifies use without sacrificing the proven capabilities of SE. The real power of SE-FIT lies in its automated pre-processing, pre-defined geometries, convergence computation operation

  20. Birds observed at Shemya Island, Aleutian Islands

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report covers Shemya Island bird surveys. The reports outline migrant bird activity during August 31 to October 3, 1977. The purpose of the study was to survey...

  1. Paradise Islands? Island States and Environmental Performance

    Directory of Open Access Journals (Sweden)

    Sverker C. Jagers

    2016-03-01

    Full Text Available Island states have been shown to outperform continental states on a number of large-scale coordination-related outcomes, such as levels of democracy and institutional quality. The argument developed and tested in this article contends that the same kind of logic may apply to islands’ environmental performance, too. However, the empirical analysis shows mixed results. Among the 105 environmental outcomes that we analyzed, being an island only has a positive impact on 20 of them. For example, island states tend to outcompete continental states with respect to several indicators related to water quality but not in aspects related to biodiversity, protected areas, or environmental regulations. In addition, the causal factors previously suggested to make islands outperform continental states in terms of coordination have weak explanatory power in predicting islands’ environmental performance. We conclude the paper by discussing how these interesting findings can be further explored.

  2. Electrochemical island growth

    Science.gov (United States)

    Guo, Lian

    The ability to independently dictate the shape and crystal orientation of islands in electrocrystallization remains a significant challenge. The main reason for this is that the complex interplay between the substrate, nucleation, and surface chemistry are not fully understood. Here the kinetics of 3D island growth for copper on ruthenium oxide is studied. The small nucleation overpotential leads to enhanced lateral growth and the formation of hexagonal, disk-shaped islands. The amorphous substrate allows the nuclei to achieve the thermodynamically favorable orientation, i.e. a surface normal. Island growth follows power law kinetics in both lateral and vertical directions. At shorter times, the two growth exponents are equal to 1/2 whereas at longer times lateral growth slows down while vertical growth speeds up. Accordingly, a growth mechanism is proposed, wherein the lateral growth of disk-shaped islands is initiated by attachment of Cu adatoms on the ruthenium oxide surface onto the island periphery while vertical growth is initiated by 2D nucleation on the top terrace and followed by lateral step propagation. These results indicate three criteria for enhanced lateral growth in electrodeposition: (i) a substrate that leads to a small nucleation overpotential, (ii) fast adatom surface diffusion on substrate to promote lateral growth, and (iii) preferential anion adsorption to stabilize the basal plane. The surface roughness evolution, during isolated island growth, island coalescence, and continuous film growth, has also been studied as a function of island shape and island density. It is shown that the surface width wsat(l,t) initially follows anomalous scaling in the isolated island growth regime but exhibits normal scaling during the early stages of continuous film growth. Furthermore, the short length scale roughness is dependent primarily on island shape while the long length scale roughness is dependent on island density. Electrochemical deposition of

  3. Photosensitive anisotype n-ZnSe/ p-InSe and n-ZnSe/ p-GaSe heterojunctions

    Science.gov (United States)

    Kudrynskyi, Z. R.; Kovalyuk, Z. D.

    2014-08-01

    Anisotype n-ZnSe/ p-InSe and n-ZnSe/ p-GaSe heterojunctions are obtained for the first time. They are grown on layered crystalline GaSe and InSe substrates by annealing in Zn vapor. It is found that these heterojunctions are sensitive to light in the near-infrared and visible spectral ranges.

  4. Tanzania - Mafia Island Airport

    Data.gov (United States)

    Millennium Challenge Corporation — The evaluation design and subsequent data gathering activities will address the following key research questions: a) Has the Mafia Island Airport Upgrade Project...

  5. St. Vincent Island Tour

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This letter, written by Charles Marks who lived on St. Vincent Island as a child, notes the changes he saw in the island when he visited in 1981. He notes that the...

  6. Marine and Island Ecology.

    Science.gov (United States)

    Stephens, Lawrence J.; And Others

    1988-01-01

    Describes an ecology course which provides students with an opportunity to observe aquatic and terrestrial life in the Bahamas. States that students learn scientific methodology by measuring physical and chemical aspects of the island habitats. Provides information on the island, course description and objectives, transportation, facilities, and…

  7. Phytoseiid mites of the Canary Islands (Acari, Phytoseiidae. II. Tenerife and La Gomera Islands

    Directory of Open Access Journals (Sweden)

    Ferragut, F.

    2007-12-01

    Full Text Available Phytoseiid mites (Acari, Phytoseiidae inhabiting plants in natural ecosystems from Tenerife and La Gomera islands (Canary Islands have been studied. Surveys were conducted from 1997 to 2002. Eleven species were collected, one of them being reported for the first time from the Canary Islands and six of them reported for the first time from Tenerife and La Gomera islands. Euseius machadoi n. sp. collected from woody plants in the Canarian laurisilva is proposed as a new species.

    En muestreos realizados desde 1997 hasta 2002 se ha estudiado la fauna de ácaros fitoseidos (Acari, Phytoseiidae asociada a plantas de ecosistemas naturales de las islas de Tenerife y La Gomera (Islas Canarias. Se han recolectado un total de 11 especies, siendo una de ellas citada por vez primera en las islas Canarias y seis de ellas citadas por primera vez en las islas de Tenerife y La Gomera. Euseius machadoi n. sp., recolectado en plantas leñosas de la laurisilva canaria, se propone como una nueva especie.

  8. A NEW SPECIES OF RANINOIDES (CRUSTACEA : DECAPODA : RANINIDAE) FROM OFF THE SOUTHEASTERN COAST OF HAINAN ISLAND AND NANSHA ISLANDS

    Institute of Scientific and Technical Information of China (English)

    陈惠莲; MichaelTuerkay

    2001-01-01

    Ranlnoides longifions new species, off SE coast of Hainan Island, dorsal surface of carapace with an arched granular edge across carapace between the anterolateral teeth, median frontal tooth longest, second frontal teeth subquadrate.

  9. Editorial : islands : objects of representation

    OpenAIRE

    Baldacchino, Godfrey

    2005-01-01

    In this article, Baldacchino tries to define what is an island and what makes an island. Insularity is a diverse experience ranging from the remoteness of Easter Island in the Pacific to the more international and globalized islands of the Western world.

  10. Nunivak Island muskox studies

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report covers the Nunivak Island muskox, summarizing the carrying capacity and age and sex ratios. Recommendations are attached for muskox management.

  11. Melville Island, Australia

    Science.gov (United States)

    1992-01-01

    Melville Island, just off the coast of Darwin, Northern Territory, Australia (11.5S, 131.0E) is a sparsely inhabited tropical island with heavy woodland concentrations. The widespread and prominant smoke plumes were most likely set to renew pasture under open canopy woodland. Soil erosion is almost non- existant as can be seen by the clear and clean river flow. The offshore sediments are coastal current borne deposits from King Sound to the west.

  12. Fe distribution in GaSe and InSe

    Energy Technology Data Exchange (ETDEWEB)

    Kovalyuk, Z.D.; Feichuk, P.I.; Shcherbak, L.P.; Zbykovskaya, N.I.

    1985-06-01

    In this paper, the authors use tagged atoms to determine the effective coefficients of Fe distribution in GaSe and InSe during crystallization of a doped melt by the Bridgman method. The distribution of Fe in GaSe and InSe was studied with the aid of Fe tagged with the radiosotopes VVFe + VZFe. Doping of the material was combined with the processes of synthesis and crystallization. Equations are presented for the calculation of the real impurity distribution in GaSe and InSe crystals.

  13. Electronic states of InSe/GaSe superlattice

    Science.gov (United States)

    Erkoç, Ş.; Allahverdi, K.; Ibrahim, Z.

    1994-06-01

    Analysis of recent publications revealed an increasing interest in epitaxial growth of InSe/GaSe superlattice. Within the effective mass theory we carried out self-consistent calculations of the confined and itinerant electronic states, potential profile and charge density distribution of InSe/GaSe superlattice, where the InSe layers are the well and the GaSe layers the barrier. Calculations were performed for three types of doping: uniform, modulated in the well, and modulated in the barrier. It has been found that the Coulomb interaction in the well and barrier forces the formation of localized states in the barrier region. The possibility of an insulator-metal transition in InSe/GaSe superlattice is predicted for modulation doping in the barrier and for a doping level n = 10 19cm-3. A decrease of the barrier height has been found for modulation doping in the well.

  14. Fe distribution in GaSe and InSe

    Energy Technology Data Exchange (ETDEWEB)

    Kovalyuk, Z.D.; Fejchuk, P.I.; Shcherbak, L.P.; Zbykovskaya, N.I.

    1985-01-01

    Radiometry was used to determine the effective coefficients of Fe distribution in GaSe and InSe during planar crystallization of melt with 5 x 10/sup 17/-6 x 10/sup 19/ at/cm/sup 3/ initial impurity concentration; concentration dependence of these cofficients was established. Equations for calculation of the real impurity distribution in GaSe and InSe crystals are presented.

  15. Vicia vulcanorum (Fabaceae a new species from the island of Lanzarote (Canary Islands

    Directory of Open Access Journals (Sweden)

    Morales-Mateos, J. B.

    2012-12-01

    Full Text Available Vicia vulcanorum J. Gil & M. L. Gil (Fabaceae, a new species of subg. Cracca (Dumort. Peterm., sect. Cracca Dumort. is described and illustrated from the island of Lanzarote, Canary Islands, north-west of Africa. It is related to and compared with Vicia cirrhosa C. Sm. ex Webb & Berthel. and Vicia filicaulis Webb & Berthel., two endemic species from the western and central group of the Canary Islands, and Vicia ferreirensis Goyder, an endemic species from Porto Santo Island, Madeira Archipelago.Se describe e ilustra Vicia vulcanorum J. Gil & M. L. Gil (Fabaceae, una nueva especie y endemismo de la isla de Lanzarote, Islas Canarias, perteneciente al subg. Cracca (Dumort. Peterm., sect. Cracca Dumort. Se encuentra relacionada y es comparada con Vicia cirrhosa C. Sm. ex Webb & Berthel. y Vicia filicaulis Webb & Berthel., especies endémicas de las islas centrales y occidentales del archipiélago canario, y con Vicia ferreirensis Goyder, especie endémica de la isla de Porto Santo, en el archipiélago de Madeira.

  16. Labeling radiopharmaceuticals with Se-75: using Se-75 selenious acid

    Energy Technology Data Exchange (ETDEWEB)

    Sadek, S.A.; Basmadjian, G.P.; Ice, R.D. (Oklahoma Univ., Oklahoma City (USA). Health Sciences Center)

    1982-08-01

    A cheap, easy method of introducing high specific activity Se-75 into radiopharmaceuticals is described. Se-75 selenious acid is reduced with NaBH/sub 4/ producing the nucleophile NaHSe. Using this method, a fatty acid, cholesterol, estrogen and phenethylamine are all labelled with Se-75.

  17. Processes affecting the spatial distribution of seagrass meadow sedimentary material on Yao Yai Island, Thailand

    NARCIS (Netherlands)

    Quak, M.S.Y.; Ziegler, A.D.; Benner, S.G.; Evans, S.; Todd, P.A.; Gillis, L.G.; Vongtanaboon, S.; Jachowski, N.; Bouma, T.J.

    2016-01-01

    Many islands throughout SE Asia are experiencing rapid development and land-cover conversion thatpotentially threaten sensitive coastal ecosystems, such as seagrasses, through increased loading ofsediment and nutrients originating from disturbed catchments draining to the sea. To evaluate this threa

  18. Formation and properties of epitaxial CdSe, ZnSe quantum dots. Conventional molecular beam epitaxy and related techniques

    Energy Technology Data Exchange (ETDEWEB)

    Mahapatra, Suddhasatta

    2008-01-16

    This thesis systematically investigates three such alternative approaches, along with conventional MBE, with emphasis on the formation-mechanism of QDs, and optimization of their morphological and optical attributes. it is shown here that no distinct 3D islands are formed in MBE growth of CdSe on ZnSe. While CdSe heteroepitaxy occurs in the multilayer-mode at T{sub G}=300 C, a reentrant recovery of the layer-by-layer mode is reported in this thesis, for growth at T{sub G}<{proportional_to}240 C. In the second variant technique, formation of large and distinct islands is demonstrated by deposition of amorphous selenium (a-Se) onto a 2D CdSe epilayer at room temperature and its subsequent desorption at a higher temperature (T{sub D}=230 C). The process steps of the third variant technique, developed in course of this work, are very similar to those of the previous one-the only alteration being the substitution of selenium with tellurium as the cap-forming-material. (orig.)

  19. Intraband Spectroscopy of GaSe Nanoparticles and InSe/GaSe Nanoparticle Heterojunctions

    Science.gov (United States)

    Kelley, David F.; Tu, Haohua; Chen, Xiang-Bai

    The spectroscopic and dynamical characteristics of electron and hole intraband transitions in several sizes of GaSe nanoparticles have been studied using polarized femtosecond transient absorption spectroscopy. Assignments of the observed absorptions are made in terms of the known GaSe band structure and a model in which the electron and hole states are described by particle-in-a-cylinder states. The results indicate that the transient absorption spectrum is due to a size-independent, z-polarized hole intraband transition, and in the smaller particles, an x,y-polarized electron transition. In InSe/GaSe mixed aggregates, direct electron transfer from InSe to GaSe nanoparticles occurs upon photoexcitation of a charge transfer band. An exciton on GaSe nanoparticles can undergo diffusion and charge separation the an InSe/GaSe heterojunction.

  20. Dragonflies of Polillo Island, Philippines

    OpenAIRE

    Villanueva, Reagan Joseph T.

    2010-01-01

    Polillo is a small group of island (27 islands in total) east of central Luzon (Figure 1). It is made up of four main island viz. Polillo I, Patnanungan I, Jomalig I and Palasan I and several islets. This island group has relatively flat to gentle sloping terrain and the highest point is only 300 m asl (Mt. Maluhod) in Polillo Island (ca 700 km²) which is the largest in the group and the third largest island in greater Luzon biogeographic region.

  1. Study of the heterointerfaces InSe on GaSe and GaSe on InSe

    Science.gov (United States)

    Fargues, D.; Brahim-Otsmane, L.; Eddrief, M.; Sébenne, C.; Balkanski, M.

    1993-03-01

    InSe and GaSe thin films are grown on freshly cleaved (00.1) substrates of GaSe and InSe, respectively, by molecular beam epitaxy. They are studied in situ by X-ray photoelectron spectroscopy (XPS) and reflection high energy electron diffraction (RHEED). From the attenuation curves of the XPS substrate core level peaks, the quasi layer-by-layer growth is shown during the first stages of deposition in agreement with RHEED results. But both interfaces are not totally symmetrical. For InSe on GaSe(00.1), the sharpness of the interface is shown and the conditions of growth are well established. For GaSe on InSe(00.1), the sharpness of the interface can also be suggested although it is less clear; this is related to the growth conditions.

  2. TEST CELLS SE-5 - SE-8 - SE-10 IN THE ENGINE RESEARCH BUILDING ERB AND 117 HIGH ENERGY FUELS LABORAT

    Science.gov (United States)

    1963-01-01

    TEST CELLS SE-5 - SE-8 - SE-10 IN THE ENGINE RESEARCH BUILDING ERB AND 117 HIGH ENERGY FUELS LABORATORY HEFL - TRANSDUCER INSTRUMENTATION CONSOLE SE-10 - TEMPERATURE INSTRUMENTATION CONSOLE SE-10 - MODULE FUEL CELL EXPERIMENT SE-8 -

  3. Seal Island and Franklin Island National Wildlife Refuges Trip Report

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This is a summary of visits to both Seal Island National Wildlife Refuge and Franklin Island National Wildlife Refuge on August 14, 15, 16, 1982.

  4. Small Island Visitor Attractions

    Directory of Open Access Journals (Sweden)

    Haven Allahar

    2015-03-01

    Full Text Available This article proposes a process framework for developing and managing visitor attractions (VA in small island developing states with Trinidad and Tobago, a two-island state in the Caribbean, as the case study. An extensive literature review was conducted, supported by field observations, individual depth interviews, and small and large focus group meetings. The process framework identified four sets of processes: national policy formulation and legislation; inventory, classification, evaluation, and ranking of VA; general operations management involving project management activities; and site specific activities of development, operations, and maintenance. The value of the framework lies in the fact that no similar framework applicable to small islands was covered in the literature and validation was obtained from a panel of experts and a cross section of tourism stakeholders in Tobago.

  5. Islands of Astronomy

    Directory of Open Access Journals (Sweden)

    Godfrey Baldacchino

    2009-05-01

    Full Text Available A global review of islands and their connections with astronomy throughout history up to the contemporary times suggests eight compelling, distinct yet interlocking reasons why islands have been and remain so important to astronomy and astronomers. Islands constitute favourable locations for various types of astronomy-related activities: from tracking satellites and monitoring significant celestial events, to providing exceptional locations to jurisdictions with mandated dark and unpolluted skies. They appeal for their favourable longitude and (especially southern latitude, as well as for their disposition towards the conditions that the scientific community may expect in an ideal world: relatively clear viewing conditions from a secure, self-contained platform that is, however, endowed with connectivity. This article is written as a contribution to the International Year of Astronomy (2009.

  6. 1957 Aleutian Islands, USA Images

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The magnitude 8.6 (Mw) earthquake occurred south of the Andreanof Islands, in the Aleutian Islands. It generated an 8-meter tsunami that did great damage on Adak...

  7. Gulf Island National Wildlife Refuges

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This document provides a brief history and describes physical features of the Gulf Island National Wildlife Refuges. The Gulf Island National Wildlife Refuges...

  8. Sakhalin Island terrain intelligence

    Science.gov (United States)

    ,

    1943-01-01

    This folio of maps and explanatory tables outlines the principal terrain features of Sakhalin Island. Each map and table is devoted to a specialized set of problems; together they cover the subjects of terrain appreciation, climate, rivers, water supply, construction materials, suitability for roads, suitability for airfields, fuels and other mineral resources, and geology. In most cases, the map of the island is divided into two parts: N. of latitude 50° N., Russian Sakhalin, and south of latitude 50° N., Japanese Sakhalin or Karafuto. These maps and data were compiled by the United States Geological Survey during the period from March to September, 1943.

  9. Archaeoastronomy of Easter Island

    Science.gov (United States)

    Edwards, Edmundo

    Astronomer priests or "skywatchers" on Easter Island lived in stone towers that were used as observatories and built stone markers in the periphery that indicated the heliacal rising of certain stars that served to indicate the arrival of marine birds, turtles, the offshore fishing season, and times for planting and harvest. Petroglyphs related to such sites depict outriggers, fishhooks, pelagic fish, and turtles and supposedly represented a star map. In this chapter, we analyze a set of such skywatchers dwellings, and stone markers located upon the North coast of Easter Island that have astronomic orientations, its related petroglyphs, and the relations between these directions with their yearly activities and their ritual calendar.

  10. Long Island Solar Farm

    Energy Technology Data Exchange (ETDEWEB)

    Anders, R.

    2013-05-01

    The Long Island Solar Farm (LISF) is a remarkable success story, whereby very different interest groups found a way to capitalize on unusual circumstances to develop a mutually beneficial source of renewable energy. The uniqueness of the circumstances that were necessary to develop the Long Island Solar Farm make it very difficult to replicate. The project is, however, an unparalleled resource for solar energy research, which will greatly inform large-scale PV solar development in the East. Lastly, the LISF is a superb model for the process by which the project developed and the innovation and leadership shown by the different players.

  11. Islanded operation of distribution networks

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    This report summarises the results of a study assessing the benefits and risks to distribution network of generator islanding and examining the technical, commercial and regulatory changes required to facilitate the operation of islanding. The background to the study is traced, and details are given of a literature review, the technical criteria for operating sections of the network in islanding mode, and the impact of islanding on trading. Case studies and a detailed implementation plan, data acquisition, and commercial incentives are discussed.

  12. Pacific Island Pharmacovigilance

    DEFF Research Database (Denmark)

    McEwen, John; Vestergaard, Lasse S.; Sanburg, Amanda L C

    2016-01-01

    Many Pacific Island countries (PICs) are recipients of funding support from the Global Fund to Fight AIDS, Tuberculosis and Malaria (Global Fund). However, most of these countries cannot be expected to meet Global Fund and World Health Organization (WHO) minimum requirements for a functioning...

  13. Teachers' Potpourri: The Island

    Science.gov (United States)

    Levinson, Steven

    1971-01-01

    The author allows his students to create an imaginary society--the island. While developing the structure of their society, the students are actually practicing speech skills and activities such as problem solving through discussion, persuasive speaking and impromptu speaking. (Author/MS)

  14. Islands in the ice

    DEFF Research Database (Denmark)

    Jørgensen, Tina; Kjær, Kurt H.; Haile, James Seymour

    2012-01-01

    Nunataks are isolated bedrocks protruding through ice sheets. They vary in age, but represent island environments in 'oceans' of ice through which organism dispersals and replacements can be studied over time. The J.A.D. Jensen's Nunataks at the southern Greenland ice sheet are the most isolated ...

  15. Bone island and leprosy

    Energy Technology Data Exchange (ETDEWEB)

    Carpintero, P.; Garcia-Frasquet, A. [Department of Orthopaedic Surgery, Cordoba University, Medical School, Reina Sofia University Hospital, Cordoba (Spain); Tarradas, E. [Department of Imaging, Cordoba University, Medical School, Cordoba (Spain); Logrono, C. [Department of Dermatology, Reina Sofia University Hospital, Cordoba (Spain); Carrascal, A. [Department of Radiology, Infanta Elena Hospital, Huelva (Spain); Carreto, A. [Department of Radiology, Reina Sofia University Hospital, Cordoba (Spain)

    1998-06-01

    Objective. To determine the incidence of bone islands in leprosy patients. Design. X-rays of feet and hands of patients with Hansen`s disease (leprosy) were reviewed retrospectively. A second group of related age- and sex-matched patients who did not have Hansen`s disease was used for control purposes. Controls had undergone hand or foot X-rays during diagnosis of other pathologies. The patients with Hansen`s disease were compared with the control group, and were also analyzed as subgroups with different types of leprosy. The results were subjected to statistical analysis. Patients. Ninety patients with Hansen`s disease were randomly selected for this study. Patients who had had ulcers on hands or feet were excluded from the study. Results and conclusions. Bone islands were demonstrated in 20 patients with Hansen`s disease; no bone islands were observed in the controls. This was statistically significant (P<0.01). Bone islands were only seen in patients with lepromatous leprosy and borderline types but were not demonstrated in patients with tuberculoid leprosy. There was also a statistically significant relationship for a disease duration of 15 years or more. The cause of this raised incidence of enostosis in leprosy patients is not clear, but there may be a genetic predisposition in patients with leprosy, or it may be a side effect of leprosy, especially the lepromatous form. (orig.) With 4 figs., 2 tabs., 9 refs.

  16. Epitaxial growth of ZnSe and ZnSe/CdSe nanowires on ZnSe

    Energy Technology Data Exchange (ETDEWEB)

    Bellet-Amalric, E.; Bounouar, S.; Kheng, K. [CEA-CNRS-UJF Group, Nanophysique et Semiconducteurs, CEA Grenoble, INAC, 17 rue des Martyrs, 38 054 Grenoble (France); Elouneg-Jamroz, M.; Bougerol, C.; Hertog, M. den; Genuist, Y.; Poizat, J.P.; Andre, R.; Tatarenko, S. [CEA-CNRS-UJF Group, Nanophysique et Semiconducteurs, Institut Neel, BP 166, 38 042 Grenoble (France)

    2010-06-15

    We report the molecular beam epitaxy (MBE) growth of ZnSe nanowires (NWs) on a ZnSe(100) epilayer assisted by gold catalyst. Gold dewetting assists in the formation of nanotrenches along the [0-1-1] direction in the ZnSe buffer layer. Nucleation of the gold catalyst in the trenches leads to the growth of NWs preferentially in directions orthogonal to the trenches. The wires adopt mostly the wurtzite type structure and grow along the c-axis. CdSe quantum dots were inserted in the ZnSe NWs. The CdSe insertions systematically adopt a cubic zinc-blende arrangement with a[111] growth axis, as confirmed by transmission electron microscopy. (copyright 2010 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

  17. Fluvial dissection, isostatic uplift, and geomorphological evolution of volcanic islands (Gran Canaria, Canary Islands, Spain)

    Science.gov (United States)

    Menéndez, Inmaculada; Silva, Pablo G.; Martín-Betancor, Moises; Pérez-Torrado, Francisco José; Guillou, Hervé; Scaillet, S.

    2008-11-01

    Digital analysis of torrential gullies ('barrancos') deeply incised into the volcanic Island of Gran Canaria (Canary Islands) allows us to extract the longitudinal profiles and pre-incision surfaces for individual basins, from which morphometric parameters (length, elevation, area, slope) have been calculated. Other derived parameters, such as ridgeline profiles, maximum incision values, volume removed by fluvial erosion, geophysical relief and isostatic uplift, have also been computed. Based on K/Ar ages for the island, well-constrained incision-uplift rates have been calculated by means of the combination of different methodological approaches commonly used in orogens and large mountain ranges. The geomorphological and morphometric analyses reveal that the island is clearly divided into four environmental quadrants determined by the combination of a couple of key-factors: the age of the volcanic surfaces and the climatic conditions. These factors determine a young sector covered with Plio-Quaternary platform-forming lavas (finished at 1.9-1.5 Ma) evolving under contrasting wet (NE) to dry (SE) climates, and an older sector, conserving the residual surfaces of the Miocene shield building (14.5-8.7 Ma) at the ridgelines, also subjected to wet (NW) and dry (SW) climates. Incision is related to the age zonation of the island. Maximum incisions (< 1200 m) are logically recorded in the older SW sector of the island, but incision rates are directly related to the climatic zonation, with maximum mean values in the wet Northern quadrants (0.18-0.12 mm/yr). The evaluation of the material removed by fluvial erosion for individual basins allows us to assess the consequent theoretical isostatic response in the different sectors of the island. The obtained uplift rates indicate that water availability (by drainage area and elevation) is a relevant controlling factor: the records from the wet Northern sectors show uplift values of between 0.09 and 0.03 mm/yr, whereas in the

  18. Landscapes of Santa Rosa Island, Channel Islands National Park, California

    Science.gov (United States)

    Schumann, R. Randall; Minor, Scott A.; Muhs, Daniel R.; Pigati, Jeffery S.

    2014-01-01

    Santa Rosa Island (SRI) is the second-largest of the California Channel Islands. It is one of 4 east–west aligned islands forming the northern Channel Islands chain, and one of the 5 islands in Channel Islands National Park. The landforms, and collections of landforms called landscapes, of Santa Rosa Island have been created by tectonic uplift and faulting, rising and falling sea level, landslides, erosion and deposition, floods, and droughts. Landscape features, and areas delineating groups of related features on Santa Rosa Island, are mapped, classified, and described in this paper. Notable landscapes on the island include beaches, coastal plains formed on marine terraces, sand dunes, and sand sheets. In this study, the inland physiography has been classified into 4 areas based on relief and degree of fluvial dissection. Most of the larger streams on the island occupy broad valleys that have been filled with alluvium and later incised to form steep- to vertical-walled arroyos, or barrancas, leaving a relict floodplain above the present channel. A better understanding of the processes and mechanisms that created these landscapes enhances visitors’ enjoyment of their surroundings and contributes to improving land and resource management strategies in order to optimize and balance the multiple goals of conservation, preservation, restoration, and visitor experience.

  19. Sample Set (SE): SE16 [Metabolonote[Archive

    Lifescience Database Archive (English)

    Full Text Available SE16 Effect of agricultural films for spinach leaf metabolites 2 Investigation of S...pinacia oleracea leaf metabolites. 3 growth conditions (covered with normal or UV cut agricultural film or no agricultural

  20. Sample Set (SE): SE14 [Metabolonote[Archive

    Lifescience Database Archive (English)

    Full Text Available SE14 Effect of agricultural films for tomato fruit metabolites Investigation of Sol...anum lycopersicum fruit metabolites. 3 growth conditions (covered with normal or UV cut agricultural film or no agricultural

  1. Sample Set (SE): SE19 [Metabolonote[Archive

    Lifescience Database Archive (English)

    Full Text Available SE19 Grobal triacylglycerol analysis in mouse liver and white adipose tissue (WAT) ...rol (TAG) molecular species from complex lipid mixtures of mouse liver and white adipose tissue (WAT) using

  2. Sample Set (SE): SE55 [Metabolonote[Archive

    Lifescience Database Archive (English)

    Full Text Available SE55 AtMetExpress development: a phytochemical atlas of arabidopsis development We ...or elucidation of metabolite structure. These are part of the AtMetExpress metabolite accumulation atlas. Ba

  3. Sample Set (SE): SE48 [Metabolonote[Archive

    Lifescience Database Archive (English)

    Full Text Available SE48 Toward better annotation in plant metabolomics: isolation and structure elucidation of 36 special... elucidated the structures of specialized metabolites from rice by using MS/MS and NMR. Thirty-six compounds

  4. Sample Set (SE): SE20 [Metabolonote[Archive

    Lifescience Database Archive (English)

    Full Text Available SE20 Arabidopsis thaliana leaf metabolite analysis for a software test Investigatio...es that were investigated to optimize the parameters of PowerGet software for better metabolite annotation i

  5. Sample Set (SE): SE10 [Metabolonote[Archive

    Lifescience Database Archive (English)

    Full Text Available SE10 Effect of phosphorus nutrition for cabbage metabolites Investigation of Brassi...ca oleracea var. capitata Hatukoi leaf metabolites. 3 growth conditions (high, low and no phosphorus nutrition

  6. Sample Set (SE): SE30 [Metabolonote[Archive

    Lifescience Database Archive (English)

    Full Text Available SE30 Comparison of seed metabolites among soybean varieties Investigation of Glycin...e max. green seed metabolites. 3 varieties (Kamogawashichiri, Koitozairai, Tanbakuro) data are examined. Tak

  7. Sample Set (SE): SE12 [Metabolonote[Archive

    Lifescience Database Archive (English)

    Full Text Available SE12 Effect of agricultural films for spinach leaf metabolites Investigation of Spi...nacia oleracea leaf metabolites. 2 cultivars (Nihon and Wasesaradaakari), 2 growth conditions (normal film and UV film

  8. Island solution; Inselloesung

    Energy Technology Data Exchange (ETDEWEB)

    Bah, Isaac

    2013-06-15

    On the Azores island Graciosa the Berlin-based company Younicos has installed a new electricity system with advanced storage technology, which will make the islanders independent from fossil fuels. With an energy mix of wind power, photovoltaics and biomass the dependence on fossil fuels should be terminated. In the center of the flagship project specifically developed hybrid batteries are used (combination of sodium-sulfur- and lithium-ion batteries) with 2.7 MW of power and a storage capacity of ten megawatts hours. [German] Auf der Azoren-Insel Graciosa installiert das Berliner Unternehmen Younicos ein neues Stromsystem mit modernster Speichertechnologie, das die Bewohner unabhaengig von fossilen Energietraegern machen soll. Mit einem Energiemix aus Windkraft, Photovoltaik und Biomasse soll die Abhaengigkeit von fossilen Brennstoffen beendet werden. Im Zentrum des Vorzeigeprojekts stehen speziell fuer den Inseleinsatz entwickelte Hybridbatterien (Kombination aus Natrium-Schwefel- und Lithium-Ionen-Akkus) mit 2,7 Megawatt Leistung und eine Speicherkapazitaet von zehn Megawattestunden.

  9. Urban heat island 1

    DEFF Research Database (Denmark)

    Bühler, Oliver; Jensen, Marina Bergen; Petersen, Karen Sejr

    2010-01-01

    Urban Heat Island beskriver det forhold, at temperaturen i byområder er højere end temperaturen i tilgrænsede landområder. Årsagen hertil ligger i den urbane arealanvendelse, hvor en mindre andel af arealerne er dækket af vegetation, og en større andel består af forseglede arealer....

  10. Photophysics of GaSe/InSe nanoparticle heterojunctions.

    Science.gov (United States)

    Chen, Xiang-Bai; Kelley, David F

    2006-12-21

    The photophysics of mixed aggregates of GaSe/InSe nanoparticles have been studied using static and time-resolved absorption and emission spectroscopies. The results indicate that the GaSe/InSe interfaces form heterojunctions and exhibit photoinduced direct charge transfer from the GaSe valence band to the InSe conduction band. This results in the electrons and holes being localized separately in these two types of nanoparticles. The energy diagram of the nanoparticle heterojunction can be constructed from the static spectra, known bulk band offsets, and quantum confinement effects. These considerations accurately predict the energy of the observed charge-transfer band. Photoexcitation also produces excitons in the aggregates, away from the heterojunctions. These excitons can undergo diffusion and quench upon reaching a heterojunction. Time-resolved fluorescence kinetics can be modeled to extract an exciton diffusion coefficient. A value of 2.0 nm2/ns is obtained, which is in good agreement with values obtained from previous fluorescence anisotropy decay measurements.

  11. Islands of the Arctic

    Science.gov (United States)

    Overpeck, Jonathan

    2004-02-01

    Few environments on Earth are changing more dramatically than the Arctic. Sea ice retreat and thinning is unprecedented in the period of the satellite record. Surface air temperatures are the warmest in centuries. The biology of Arctic lakes is changing like never before in millennia. Everything is pointing to the meltdown predicted by climate model simulations for the next 100 years. At the same time, the Arctic remains one of the most pristine and beautiful places on Earth. For both those who know the Arctic and those who want to know it, this book is worth its modest price. There is much more to the Arctic than its islands, but there's little doubt that Greenland and the major northern archipelagos can serve as a great introduction to the environment and magnificence of the Arctic. The book uses the islands of the Arctic to give a good introduction to what the Arctic environment is all about. The first chapter sets the stage with an overview of the geography of the Arctic islands, and this is followed by chapters that cover many key aspects of the Arctic: the geology (origins), weather and climate, glaciers, ice sheets, sea ice, permafrost and other frozen ground issues, coasts, rivers, lakes, animals, people, and environmental impacts. The material is pitched at a level well suited for the interested layperson, but the book will also appeal to those who study the science of the Arctic.

  12. [Salmonella pathogenicity islands].

    Science.gov (United States)

    Sırıken, Belgin

    2013-01-01

    Salmonella species are facultative intracellular pathogenic bacteria. They can invade macrophages, dendritic and epithelial cells. The responsible virulence genes for invasion, survival, and extraintestinal spread are located in Salmonella pathogenicity islands (SPIs). SPIs are thought to be acquired by horizontal gene transfer. Some of the SPIs are conserved throughout the Salmonella genus, and some of them are specific for certain serovars. There are differences between Salmonella serotypes in terms of adaptation to host cell, virulence factors and the resulting infection according to SPA presence and characteristics. The most important Salmonella virulence gene clusters are located in 12 pathogenicity islands. Virulence genes that are involved in the intestinal phase of infection are located in SPI-1 and SPI-2 and the remaining SPIs are required for intracellular survival, fimbrial expression, magnesium and iron uptake, multiple antibiotic resistance and the development of systemic infections. In addition SPIs, Sigma ss (RpoS) factors and adaptive acid tolerance response (ATR) are the other two important virulence factors. RpoS and ATR found in virulent Salmonella strains help the bacteria to survive under inappropriate conditions such as gastric acidity, bile salts, inadequate oxygen concentration, lack of nutrients, antimicrobial peptides, mucus and natural microbiota and also to live in phagosomes or phagolysosomes. This review article summarizes the data related to pathogenicity islands in Salmonella serotypes and some factors which play role in the regulation of virulence genes.

  13. CdSe quantum dot formation: alternative paths to relaxation of a strained CdSe layer and influence of the capping conditions.

    Science.gov (United States)

    Robin, I C; Aichele, T; Bougerol, C; André, R; Tatarenko, S; Bellet-Amalric, E; Van Daele, B; Van Tendeloo, G

    2007-07-01

    CdSe/ZnSe quantum dot formation is investigated by studying different steps of the growth. To precisely control the critical thickness of CdSe grown on a ZnSe buffer layer, the CdSe self-regulated growth rate in atomic layer epitaxy growth mode is determined by reflection high-energy electron diffraction (RHEED) measurements for a temperature range between 180 and 280 °C. Then, the two-dimensional-three-dimensional (2D-3D) transition of a strained CdSe layer on (001)-ZnSe induced by the use of amorphous selenium is studied. The formation of CdSe islands is found when 3 monolayers (ML) of CdSe are deposited. When only 2.5 ML of CdSe are deposited, another relaxation mechanism is observed, leading to the appearance of strong undulations on the surface. We also studied the evolution of the surface morphology when 2.7 ML are deposited, to study the boundary between those two phenomena. The influence of capping on quantum dot morphology is investigated. It is found that cadmium is redistributed within the layer during capping. Our results show that the cadmium distribution after capping depends on the capping temperature and on the strain of the CdSe layer. Cadmium incorporation after capping is also studied. It is found that the amount of incorporated cadmium depends on the strain of the CdSe layer before capping.

  14. CdSe quantum dot formation: alternative paths to relaxation of a strained CdSe layer and influence of the capping conditions

    Energy Technology Data Exchange (ETDEWEB)

    Robin, I C [CEA-CNRS-UJF ' Nanophysics and Semiconductors' Group Laboratoire de Spectrometrie Physique/CNRS UMR5588, Universite J. Fourier, Grenoble, BP87, 38402 St Martin d' Heres (France); Aichele, T [CEA-CNRS-UJF ' Nanophysics and Semiconductors' Group Laboratoire de Spectrometrie Physique/CNRS UMR5588, Universite J. Fourier, Grenoble, BP87, 38402 St Martin d' Heres (France); Bougerol, C [CEA-CNRS-UJF ' Nanophysics and Semiconductors' Group Laboratoire de Spectrometrie Physique/CNRS UMR5588, Universite J. Fourier, Grenoble, BP87, 38402 St Martin d' Heres (France); Andre, R [CEA-CNRS-UJF ' Nanophysics and Semiconductors' Group Laboratoire de Spectrometrie Physique/CNRS UMR5588, Universite J. Fourier, Grenoble, BP87, 38402 St Martin d' Heres (France); Tatarenko, S [CEA-CNRS-UJF ' Nanophysics and Semiconductors' Group Laboratoire de Spectrometrie Physique/CNRS UMR5588, Universite J. Fourier, Grenoble, BP87, 38402 St Martin d' Heres (France); Bellet-Amalric, E [CEA-CNRS-UJF ' Nanophysics and Semiconductors' Group, Departement de Recherche Fondamentale sur la Matiere Condensee/SP2M CEA Grenoble, 17 rue des Martyrs, 38054 Grenoble cedex 9 (France); Daele, B Van [IMEC, Kapeldreef 75, 3001 Leuven (Belgium); Tendeloo, G van [EMAT University of Antwerp (RUCA), Groenenborgerlaan 171, 2020 Antwerp (Belgium)

    2007-07-04

    CdSe/ZnSe quantum dot formation is investigated by studying different steps of the growth. To precisely control the critical thickness of CdSe grown on a ZnSe buffer layer, the CdSe self-regulated growth rate in atomic layer epitaxy growth mode is determined by reflection high-energy electron diffraction (RHEED) measurements for a temperature range between 180 and 280 deg. C. Then, the two-dimensional-three-dimensional (2D-3D) transition of a strained CdSe layer on (001)-ZnSe induced by the use of amorphous selenium is studied. The formation of CdSe islands is found when 3 monolayers (ML) of CdSe are deposited. When only 2.5 ML of CdSe are deposited, another relaxation mechanism is observed, leading to the appearance of strong undulations on the surface. We also studied the evolution of the surface morphology when 2.7 ML are deposited, to study the boundary between those two phenomena. The influence of capping on quantum dot morphology is investigated. It is found that cadmium is redistributed within the layer during capping. Our results show that the cadmium distribution after capping depends on the capping temperature and on the strain of the CdSe layer. Cadmium incorporation after capping is also studied. It is found that the amount of incorporated cadmium depends on the strain of the CdSe layer before capping.

  15. MARICULTURE ON CROATIAN ISLANDS

    Directory of Open Access Journals (Sweden)

    Gordana Šarušić

    2000-09-01

    Full Text Available The first attempts of intensive mariculture in Croatia commenced at the very beginning of 1980’s. The mid-eighties brought an expansion of mariculture production, which has been continuously increasing. A few different marine organisms are intensively cultured - both fish and shellfish. Among them commercially most important and highly valued species are sea bass Dicentrarchus labrax and sea bream Sparus aurata. Mussel Mytilus galloprovincialis and oyster Ostrea edulis are the most important shellfish. Fish species such as dentex Dentex dentex, red sea bream Pagrus major and sheepshead bream Puntazzo puntazzo are reared too, but in a rather small quantities. Only recently the rearing, on-growing- of bluefin tuna Thunnus thynnus started in Croatia. The juveniles (70% are reared in a Croatian hatcheries, and 30% has to be imported mainly from Italy and France, due to a higher demand for this kind of culture among the small growers. Croatian part of Adriatic sea possesses a number of geomorfologicaly suitable sites and meteorological conditions which determined the choice - type - of intensive culture. All fish species are reared in a floating cages. The choice of cages i. e. semi off-shore or floating frames, size, rearing volume and design depend on the investors personal preference. The annual turnouf of a market size bass was about 600t and 300t bream in 1996., by 10 island farms which is 70% of total production in Croatia. Including other cultured fish species last year production was up to 1000t, and it™s being estimated to be about 1300t in the following year. The shellfish production on the islands is usually individual attempt of farmers, producing minor quantities mostly in polyculture. This production has bigger potential but it’s limited owing to the EU quality control regulations which do not allow the export, and by domestic market which has drastically decreased due to the collapse of tourism during the recent war. Almost 80

  16. Vetenfinf se ha actualizado recientemente

    Directory of Open Access Journals (Sweden)

    Veterinaria.org

    2008-02-01

    Full Text Available ResumenSe trata de un sitio web alojado en el servidor de Veterinaria.org y mantenido por el Dr. Norberto Fondevila, del Instituto de Virologia CICVyA- INTA Cautelar de Argentina .

  17. Señas Mexicano

    Directory of Open Access Journals (Sweden)

    Juan F. García Mejía

    2007-01-01

    Full Text Available En este artículo se muestra un sistema que permite el estudio y práctica del Lenguaje de Señas Mexicano (LMS, el cual es el método de comunicación de las personas que padecen un trastorno de procesamiento auditivo. El sistema propuesto en este artículo consta de un guante de tela instrumentado con sensores de flexión, una etapa de acondicionamiento de señales y una tarjeta de adquisición de datos; que en su conjunto constituyen el Hardware. El software esta formado por un programa de adquisición de datos y una interfaz de usuario, ambos codificados en Visual Basic Net. El sistema propuesto se modela por medio del lenguaje de modelado unificado (UML, ya que Visual Basic es un lenguaje orientado a eventos.

  18. Porøse materialer

    DEFF Research Database (Denmark)

    Hansen, Ernst Jan de Place

    2000-01-01

    Dette undervisningsnotat er en samling af noter, der refererer til den indledende del af kurset Materialmekanik og Porøse materailer på Insitut for Bærende Konstruktiner og Materialer (BKM).......Dette undervisningsnotat er en samling af noter, der refererer til den indledende del af kurset Materialmekanik og Porøse materailer på Insitut for Bærende Konstruktiner og Materialer (BKM)....

  19. Late colonization of Easter Island.

    Science.gov (United States)

    Hunt, Terry L; Lipo, Carl P

    2006-03-17

    Easter Island (Rapa Nui) provides a model of human-induced environmental degradation. A reliable chronology is central to understanding the cultural, ecological, and demographic processes involved. Radiocarbon dates for the earliest stratigraphic layers at Anakena, Easter Island, and analysis of previous radiocarbon dates imply that the island was colonized late, about 1200 A.D. Substantial ecological impacts and major cultural investments in monumental architecture and statuary thus began soon after initial settlement.

  20. Renewable energy islands in Europe

    Energy Technology Data Exchange (ETDEWEB)

    Oestergaard, Iben [ed.

    1998-12-31

    This publication includes a compiled presentation of various aspects concerning the possible transformation of some European islands into renewable energy communities and these projects were presented by a selection of pioneer islands at the first European Seminar on Renewable Energy Islands, held on the Danish island of Samsoee, 29-30 June 1998. This issue has increased in importance with the presentation of the ambitious EU-White Paper: `Energy for the future: Renewable Sources of Energy` which was adopted in 1998. One of the key elements of the strategy for an accelerated implementation of renewable energy is to transform 100 localities within Europe into communities which are to be 100% self-sufficient with renewable energy before 2010. In line with this strategy, the Danish Government appointed the island of Samsoe towards the end of 1997 to be the first `official` Danish, renewable energy island. This is to serve as a demonstration project for other local communities, both in Denmark as well as in the rest Europe. Gothland, Madeira, Canary Islands, Cape Verde, Arki, Crete, Minorca and Orkney Islands were represented. Environmental advantages of wind, solar and wave power for distant island communities were indicated. Serious savings would be achieved by limitation of fossil fuel import and utilization of local resources. (EG)

  1. Seabirds of Easter Island, Salas y Gómez Island and Desventuradas Islands, southeastern Pacific Ocean

    OpenAIRE

    Flores,Marcelo A; Roberto P Schlatter; Rodrigo Hucke-Gaete

    2014-01-01

    We reviewed available information on seabirds inhabiting Easter Island, Salas y Gómez Island and Desventuradas Islands and their adjacent waters through an analysis of published and grey literature. Results obtained indicate that a total of 37 species are present in the study area and that, among the orders represented, the Procellariiformes and Charadriiformes are the dominant taxa (29 species). Moreover, the family Procellariidae is represented by 13 species and Laridae by 7 species. There ...

  2. Islands and non-islands in native and heritage Korean

    Directory of Open Access Journals (Sweden)

    Boyoung eKim

    2016-02-01

    Full Text Available To a large extent, island phenomena are cross-linguistically invariable, but English and Korean present some striking differences in this domain. English has wh-movement and Korean does not, and while both languages show sensitivity to wh-islands, only English has island effects for adjunct clauses. Given this complex set of differences, one might expect Korean/English bilinguals, and especially heritage Korean speakers (i.e. early bilinguals whose L2 became their dominant language during childhood to be different from native speakers, since heritage speakers have had more limited exposure to Korean, may have had incomplete acquisition and/or attrition, and may show significant transfer effects from the L2. Here we examine islands in heritage speakers of Korean in the U.S. Through a series of four formal acceptability experiments comparing these heritage speakers with native speakers residing in Korea, we show that the two groups are remarkably similar. Both show clear evidence for wh-islands and an equally clear lack of adjunct island effects. Given the very different linguistic environment that the heritage speakers have had since early childhood, this result lends support to the idea that island phenomena are largely immune to environmental influences and stem from deeper properties of the processor and/or grammar. Similarly, it casts some doubt on recent proposals that islands are learned from the input.

  3. Islands of the Arctic

    Science.gov (United States)

    Dowdeswell, Julian; Hambrey, Michael

    2002-11-01

    The Arctic islands are characterized by beautiful mountains and glaciers, in which the wildlife lives in delicate balance with its environment. It is a fragile region with a long history of exploration and exploitation that is now experiencing rapid environmental change. All of these themes are explored in Islands of the Arctic, a richly illustrated volume with superb photographs from the Canadian Arctic archipelago, Greenland, Svalbard and the Russian Arctic. It begins with the various processes shaping the landscape: glaciers, rivers and coastal processes, the role of ice in the oceans and the weather and climate. Julian Dowdeswell and Michael Hambrey describe the flora and fauna in addition to the human influences on the environment, from the sustainable approach of the Inuit, to the devastating damage inflicted by hunters and issues arising from the presence of military security installations. Finally, they consider the future prospects of the Arctic islands Julian Dowdeswell is Director of the Scott Polar Research Institute and Professor of Physical Geography at 0he University of Cambridge. He received the Polar Medal from Queen Elizabeth for his contributions to the study of glacier geophysics and the Gill Memorial Award from the Royal Geographical Society. He is chair of the Publications Committee of the International Glaciological Society and head of the Glaciers and Ice Sheets Division of the International Commission for Snow and Ice. Michael Hambrey is Director of the Centre for Glaciology at the University of Wales, Aberystwyth. A past recipient of the Polar Medal, he was also given the Earth Science Editors' Outstanding Publication Award for Glaciers (Cambridge University Press). Hambrey is also the author of Glacial Environments (British Columbia, 1994).

  4. Shoreline dynamics of the Lakshadweep Islands

    Digital Repository Service at National Institute of Oceanography (India)

    Chandramohan, P.; Anand, N.M.; Nayak, B.U.

    Lakshadweep group of islands are mainly coral atolls. Fringing reefs protect these small islands from the attack of waves. This paper describes the waves and currents acting on Kalpeni, Kavaratti, Minicoy, Agatti, Kadamat and Androth islands...

  5. Asthma and Native Hawaiians/Pacific Islanders

    Science.gov (United States)

    ... Population Profiles > Native Hawaiian/Other Pacific Islander > Asthma Asthma and Native Hawaiians/Pacific Islanders Native Hawaiians/Pacific Islanders are 70 percent more likely to have asthma as non-Hispanic whites. National data for this ...

  6. Stroke and Native Hawaiians/Pacific Islanders

    Science.gov (United States)

    ... Population Profiles > Native Hawaiian/Other Pacific Islander > Stroke Stroke and Native Hawaiians/Pacific Islanders Native Hawaiians/Pacific ... non-Hispanic white adults to die from a stroke in 2010. In general, Native Hawaiian/Pacific Islander ...

  7. The submental island flap.

    Science.gov (United States)

    Sterne, G D; Januszkiewicz, J S; Hall, P N; Bardsley, A F

    1996-03-01

    The submental island flap is a reliable source of skin of excellent colour, contour and texture match for facial resurfacing and leaves a well hidden donor site. The flap is safe, rapid and simple to raise. We report on its use in 12 cases of facial or intraoral reconstruction. Complications were few. However, there was one case of complete flap loss following its use in a reverse flow manner, due to the presence of an unreported, but constant, valve in the venous system of the face. We believe this flap to be a worthwhile addition to the existing surgical armamentarium.

  8. Organizations as Designed Islands

    Directory of Open Access Journals (Sweden)

    Pasquale Gagliardi

    2009-05-01

    Full Text Available The literature and practice of organizational design are mostly based on simplistic conceptions which ignore recent theoretical developments in organizational studies. Conceiving of organizations as ‘designed islands’, it is argued, can contribute to a more solid theoretical foundation to organization theory, viewed as normative science. Relying on the work of Peter Sloterdijk, who describes the forms of life in space in terms of spheres, the heuristic power of the island metaphor is explored. What can be learnt from the art of isolating in order to construct lived organizational environments is then discussed, and the paradoxical relationship between connection and isolation is highlighted.

  9. Pine Island Glacier, Antarctica

    Science.gov (United States)

    2001-01-01

    This pair of MISR images of the Pine Island Glacier in western Antarctica was acquired on December 12, 2000 during Terra orbit 5246. At left is a conventional, true-color image from the downward-looking (nadir) camera. The false-color image at right is a composite of red band data taken by the MISR forward 60-degree, nadir, and aftward 60-degree cameras, displayed in red, green, and blue colors, respectively. Color variations in the left (true-color) image highlight spectral differences. In the multi-angle composite, on the other hand, color variations act as a proxy for differences in the angular reflectance properties of the scene. In this representation, clouds show up as light purple. Blue to orange gradations on the surface indicate a transition in ice texture from smooth to rough. For example, the bright orange 'carrot-like' features are rough crevasses on the glacier's tongue. In the conventional nadir view, the blue ice labeled 'rough crevasses' and 'smooth blue ice' exhibit similar coloration, but the multi-angle composite reveals their different textures, with the smoother ice appearing dark purple instead of orange. This could be an indicator of different mechanisms by which this ice is exposed. The multi-angle view also reveals subtle roughness variations on the frozen sea ice between the glacier and the open water in Pine Island Bay.To the left of the 'icebergs' label are chunks of floating ice. Additionally, smaller icebergs embedded in the frozen sea ice are visible below and to the right of the label. These small icebergs are associated with dark streaks. Analysis of the illumination geometry suggests that these streaks are surface features, not shadows. Wind-driven motion and thinning of the sea ice in the vicinity of the icebergs is one possible explanation.Recently, Robert Bindschadler, a glaciologist at the NASA Goddard Space Flight Center discovered in Landsat 7 imagery a newly-formed crack traversing the Pine Island Glacier. This crack is

  10. Rain on small tropical islands

    Science.gov (United States)

    Sobel, A. H.; Burleyson, C. D.; Yuter, S. E.

    2011-04-01

    A high-resolution rainfall climatology based on observations from the Tropical Rainfall Measuring Mission's Precipitation Radar (PR) instrument is used to evaluate the influence of small tropical islands on climatological rainfall. Islands with areas between one hundred and several thousand km2 are considered in both the Indo-Pacific Maritime Continent and Caribbean regions. Annual mean climatological (1997-2007) rainfall over each island is compared with that over the surrounding ocean region, and the difference is expressed as a percentage. In addition to total rainfall, rain frequency and intensity are also analyzed. Results are stratified into two 12 h halves of the diurnal cycle as well as eight 3 h periods, and also by a measure of each island's topographic relief. In both regions, there is a clear difference between larger islands (areas of a few hundred km2 or greater) and smaller ones. Both rain frequency and total rainfall are significantly enhanced over larger islands compared to the surrounding ocean. For smaller islands the enhancement is either negligibly small, statistically insignificant, or, in the case of Caribbean rain frequency, negative. The enhancement in total rainfall over larger islands is partly attributable to greater frequency and partly to greater intensity. A diurnal cycle in island enhancement is evident in frequency but not intensity, except over small Caribbean islands where the converse is true. For the larger islands, higher orography is associated with greater rainfall enhancements. The orographic effect is larger (percentagewise) in the Caribbean than in the Maritime Continent. Orographic precipitation enhancement manifests more strongly as increased frequency of precipitation rather than increased intensity and is present at night as well as during the day. The lack of a clear diurnal cycle in orographic enhancement suggests that much of the orographic rainfall enhancement is attributable to mechanically forced upslope flow

  11. Sample Set (SE): SE27 [Metabolonote[Archive

    Lifescience Database Archive (English)

    Full Text Available SE27 Effect of agricultural films for cabbage leaf metabolites Investigation of Bra...ssica oleracea var. capitata YR Tenkuu leaf metabolites. 3 growth conditions (covered with normal or UV cut agricultural... film or no agricultural film), 3 replicates data are examined. Takeshi Ara 1, Naoki Yamamoto 1,

  12. Sample Set (SE): SE52 [Metabolonote[Archive

    Lifescience Database Archive (English)

    Full Text Available SE52 Mass spectra-based framework for automated structural elucidation of metabolom...e data to explore phytochemical diversity A novel framework for automated elucidation of metabolite structur...te ontology system was also introduced to attain putative characterization of the metabolite signals.The automated

  13. Sample Set (SE): SE56 [Metabolonote[Archive

    Lifescience Database Archive (English)

    Full Text Available SE56 MS/MS spectral tag-based annotation of non-targeted profile of plant secondary...sis, resulting in clarification of the functions of reported genes involved in glycosylation of flavonoids. Thus, non-target

  14. Sample Set (SE): SE53 [Metabolonote[Archive

    Lifescience Database Archive (English)

    Full Text Available SE53 Covering chemical diversity of genetically-modified tomatoes using metabolomic...rect acquisition of an interpretable data set of estimable chemical diversity. As an example, we report an a...etected compounds that represent 86% of the estimated chemical diversity of the metabolites listed in the Ly

  15. Sample Set (SE): SE58 [Metabolonote[Archive

    Lifescience Database Archive (English)

    Full Text Available SE58 Exploring matrix effects and quantification performance in metabolomics experiments using artificial...ificial biological gradients is a general and inexpensive tool for calibration that... the peaks but also highlights cases with strong background-dependent signal interference. Analysis of art

  16. Significados y funciones del "se"

    Directory of Open Access Journals (Sweden)

    Lidia Contreras

    2004-06-01

    Full Text Available En este artículo la autora se limita a comentar críticamente lo que la Real Academia Española de la Lengua (cit. Ac. dice en su "Gramática de la lengua española" de 1931 (Madrid, Espasa-Calpe, S. A. con respecto a los diversos tipos de "se" que ella toma en cuenta, comentario que pretende mostrar una mayor diversificación que la establecida en la mencionada obra. (In this article, its author offers a critical commentary of the position taken by The Spanish Royal Academy of Language (RAE in Gramática de la lengua española (1931 on the subject of "Uses of 'se'". The author intends to show a greater variety of uses than those proposed by RAE.

  17. Effect of a Cu-Se secondary phase on the epitaxial growth of CuInSe 2 on (1 0 0) GaAs

    Science.gov (United States)

    Yoon, S.; Kim, S.; Craciun, V.; Kim, W. K.; Kaczynski, R.; Acher, R.; Anderson, T. J.; Crisalle, O. D.; Li, S. S.

    2005-08-01

    The effect of a secondary copper selenide phase that appears during epitaxial growth of CuInSe 2 (CIS) films on (1 0 0) GaAs substrates was investigated. CIS films with different copper to indium molar ratios were deposited on (1 0 0) GaAs substrates at 360 °C by migration-enhanced epitaxy. Films grown under In-rich conditions were polycrystalline, whereas films grown with a Cu-rich composition were epitaxial, as evidenced by pole figure analysis, even when the copper composition was only slightly higher than the 1:1 Cu:In molar ratio. The epitaxial film growth followed a Stranski-Krastanov mode and contained both matrix and island regions. Grazing incidence XRD revealed a small amount of CIS with the Cu-Au-like structure near the surface of the island regions. A binary Cu-Se secondary phase aggregated near the surface in the island regions of the film, as determined by electron probe microanalysis (EPMA) before and after etching in 10% KCN. It is proposed that a Cu-Se phase present during the growth of Cu-rich CIS films enhances the mobility of adatoms on the substrate surface, allowing the film to grow epitaxially to a critical thickness. After that critical thickness is attained, the Cu-Se phase segregates at dislocation sites to nucleate the island regions. TEM-EDX scans of cross-sections also suggested a small amount of the Cu-Se secondary phase segregates on the film surface.

  18. Diffuse soil CO_2 degassing from Linosa island

    Directory of Open Access Journals (Sweden)

    Dario Cellura

    2014-06-01

    Full Text Available Normal 0 14 false false false MicrosoftInternetExplorer4 Normal 0 14 false false false IT X-NONE X-NONE MicrosoftInternetExplorer4 Herein, we present and discuss the result of 148 measurements of soil CO2 flux performed for the first time in Linosa island (Sicily Channel, Italy, a Plio-Pleistocene volcanic complex no longer active but still of interest owing to its location within a seismically active portion of the Sicily Channel rift system. The main purpose of this survey was to assess the occurrence of CO2 soil degassing, and compare flux estimations from this island with data of soil degassing from worldwide active volcanic as well as non-volcanic areas. To this aim soil CO2 fluxes were measured over a surface of about 4.2 km2 covering ~80% of the island. The soil CO2 degassing was observed to be mainly concentrated in the eastern part of the island likely due to volcano-tectonic lineaments, the presence of which is in good agreement with the known predominant regional faults system. Then, the collected data were interpreted using sequential Gaussian simulation that allowed estimating the total CO2 emissions of the island. Results show low levels of CO2 emissions from the soil of the island (~55 ton d-1 compared with CO2 emissions of currently active volcanic areas, such as Miyakejima (Japan and Vulcano (Italy. Results from this study suggest that soil degassing in Linosa is mainly fed by superficial organic activity with a moderate contribution of a deep CO2 likely driven by NW-SE trending active tectonic structures in the eastern part of the island.

  19. Neoproterozoic granitoids on Wrangel Island

    Science.gov (United States)

    Luchitskaya, M. V.; Sergeev, S. A.; Sokolov, S. D.; Tuchkova, M. I.

    2016-07-01

    Based on geochronological U-Pb studies, the age of Wrangel Island granitoids was estimated as Neoproterozoic (Cryogenian). Some granitoids contain zircons with inherited cores with an estimated age of 1010, 1170, 1200, and >2600 Ma, assuming the presence of ancient (Neoarchean-Mesoproterozoic) rocks in the Wrangel Island foundation and their involvement in partial melting under granitoid magma formation.

  20. The Museum of Piano Island

    Institute of Scientific and Technical Information of China (English)

    LURUCAI

    2004-01-01

    GULANGYU, the island of pianos in southeast Xiamen, has more than 500 pianos. In the island's Shuzhuang Garden is the Gulangyu Piano Museum.Spread out over 2,000 square meters of land, the museum has on exhibit more than 70 pianos from the UK, France, Germany and Austria.

  1. An Island Called Cuba

    Directory of Open Access Journals (Sweden)

    Jean Stubbs

    2011-06-01

    Full Text Available Review of: An Island Called Home: Returning to Jewish Cuba. Ruth Behar, photographs by Humberto Mayol. New Brunswick NJ: Rutgers University Press, 2007. xiii + 297 pp. (Cloth US$ 29.95 Fidel Castro: My Life: A Spoken Autobiography. Fidel Castro & Ignacio Ramonet. New York: Scribner/Simon & Schuster, 2008. vii + 724 pp. (Paper US$ 22.00, e-book US$ 14.99 Cuba: What Everyone Needs to Know. Julia E. Sweig. New York: Oxford University Press, 2009. xiv + 279 pp. (Paper US$ 16.95 [First paragraph] These three ostensibly very different books tell a compelling story of each author’s approach, as much as the subject matter itself. Fidel Castro: My Life: A Spoken Autobiography is based on a series of long interviews granted by the then-president of Cuba, Fidel Castro, to Spanish-Franco journalist Ignacio Ramonet. Cuba: What Everyone Needs to Know, by U.S. political analyst Julia Sweig, is one of a set country series, and, like Ramonet’s, presented in question/answer format. An Island Called Home: Returning to Jewish Cuba, with a narrative by Cuban-American anthropologist Ruth Behar and photographs by Cuban photographer Humberto Mayol, is a retrospective/introspective account of the Jewish presence in Cuba. While from Ramonet and Sweig we learn much about the revolutionary project, Behar and Mayol convey the lived experience of the small Jewish community against that backdrop.

  2. Islanded operation of distributed networks

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    This report summarises the findings of a study to investigate the regulatory, commercial and technical risks and benefits associated with the operation of distributed generation to power an islanded section of distributed network. A review of published literature was carried out, and UK generators were identified who could operate as part of an island network under the existing technical, regulatory, and safety framework. Agreement on case studies for consideration with distributed network operators (DNOs) is discussed as well as the quantification of the risks, benefits and costs of islanding, and the production of a case implementation plan for each case study. Technical issues associated with operating sections of network in islanded mode are described, and impacts of islanding on trading and settlement, and technical and commercial modelling are explored.

  3. Dealing with Pro Se Patrons

    Science.gov (United States)

    Pettinato, Tammy R.

    2008-01-01

    The problem of the "pro se" patrons (people who are representing themselves in a legal dispute or transaction) has received significant attention in the legal information literature, and many excellent suggestions have been offered to aid law librarians in dealing with this population group. However, these suggestions can be usefully applied in…

  4. The 1982 Falkland Islands (Malvinas) War; A Bibliography of Periodical Articles

    Science.gov (United States)

    1983-01-31

    700M NW of #2 1+000M NNE of #5 4250M S of Portsmouth, England 700M SE of #1 1150M W of African Coast 1500M NNE of #3 1695M NW of Capetown ...U 20M W of Tristan I. 12M S of Inaccessible I. 250M SSE of #3 1500M NW of Capetown , South Africa H Part U cont; Island/s 5. Falklands (200

  5. Sample Set (SE): SE47 [Metabolonote[Archive

    Lifescience Database Archive (English)

    Full Text Available SE47 Metabolomic correlation-network modules in Arabidopsis based on a graph-cluste...itions. Although several studies have assessed topologies in metabolomic correlation networks, it remains un...clear whether highly connected metabolites in these networks have specific functions in known tissue- and/or...orrelations in samples of roots and aerial parts. We then applied graph clustering to the constructed correlation network

  6. 75 FR 51098 - Protection Island and San Juan Islands National Wildlife Refuges, Jefferson, Island, San Juan...

    Science.gov (United States)

    2010-08-18

    ...We, the U.S. Fish and Wildlife Service (Service), announce the availability of our draft comprehensive conservation plan (CCP), draft wilderness stewardship plan (WSP), and environmental assessment (EA) for Protection Island and San Juan Islands National Wildlife Refuges (NWRs, Refuges) for public review and comment. The Draft CCP/WSP/EA describes our alternatives, including our preferred......

  7. THE STRENGTH OF THE DISSOLVED OXYGEN MAXIMUM IN THE VERTICAL DISTRIBUTION OF N ANSHA ISLANDS WATERS

    Institute of Scientific and Technical Information of China (English)

    林洪瑛; 程赛伟; 韩舞鹰

    2002-01-01

    Observation data from a cruise in the Nansha Islands, in May to June 1990, Decem ber, 1993, September to October 1994, and July, 1999, respectively, were used to develop the method presented here to indicate the existing strength of the diss ol ved oxygen maximum in the vertical distribution of Nansha Islands waters. Its se asonal variation and regional distribution are discussed in this paper. Analysis results showed that the distribution of the strength of dissolved oxygen maximum (Domax-Dosur) was closely related to the upper layer circulation and the bioactivity of Nansha Islands seawater.

  8. Mauritius - a Sustainable Island

    DEFF Research Database (Denmark)

    Larsen, Anders

    2010-01-01

    The Government of Mauritius has a long-term vision of transforming Mauritius into a sustainable Island. One important element towards the achievement of this vision is to increase the country's renewable energy usage and thereby reducing dependence on fossil fuels. Democratisation of energy...... production is determined to be the way forward. A step in this direction is to devolve upon citizens the ability and motivation to produce electricity via small-scale distributed generation (SSDG), i.e. wind, photovoltaic and hydro installations below 50 kW. Given that SSDG is more expensive per installed...... capacity than the existing much larger power plants, subsidies are needed so as to provide incentives to small independent power producers (SIPP), households and firms to invest in SSDG.The paper presents the context, the theoretical considerations and the proposed incentive schemes to enable electricity...

  9. Effect of doping on exciton states in InSe and GaSe lamellar semiconductors. [InSe:Dy; InSe:Ho; GaSe:Sn

    Energy Technology Data Exchange (ETDEWEB)

    Dzhafarova, S.Z.; Ragimova, N.A.; Abutalybov, G.I.; Guseinov, A.M.; Abdinov, A.S. (Inst. of Physics, Azerbaijan Academy of Sciences, Baku (Azerbaijan))

    1991-11-16

    Investigations of exciton luminescence and absorption spectra of InSe (GaSe) lamellar semiconductors doped with different kinds of compounds at T=1.8 K are carried out. It is found that changes in the luminescence intensity of free and bound excitons are due to screening of Coulomb interaction between electron and hole. Increase of free excitons luminescence intensity in InSe crystals activated by holmium ions is attributed to ''healing'' of metal and chalcogenide vacancies and also to interlaminar interaction increase due to exchange interaction of local formations, i.e. holmium ions. (orig.).

  10. ¿Se desindustrializa Brasil?

    Directory of Open Access Journals (Sweden)

    Fernando Mattos

    2014-01-01

    Full Text Available Este estudio pretende retomar algunos temas específicos del debate sobre la desindustrialización en Brasil, así como también, apunta a recordar algunos aspectos del debate teórico-histórico sobre la desindustrialización, presente en la literatura sobre desarrollo económico. En la primera parte, se destacan algunos elementos del referido debate presentes en la literatura especializada, discutiendo aspectos teóricos de la formulación kaldoriana que destacan el papel del crecimiento industrial y de la mudanza estructural en el crecimiento de las economías capitalistas. En la segunda, son organizados y analizados algunos indicadores recientes del desempeño del sector industrial brasileño. Finalmente, se ofrecen algunas breves notas conclusivas.

  11. Effects of fragmentation on genetic diversity in island populations of the Aegean wall lizard Podarcis erhardii (Lacertidae, Reptilia).

    Science.gov (United States)

    Hurston, H; Voith, L; Bonanno, J; Foufopoulos, J; Pafilis, P; Valakos, E; Anthony, N

    2009-08-01

    Landbridge islands offer unique opportunities for understanding the effects of fragmentation history on genetic variation in island taxa. The formation of islands by rising sea levels can be likened to a population bottleneck whose magnitude and duration is determined by island area and time since isolation, respectively. The Holocene landbridge islands of the Aegean Sea (Greece) were formed since the last glacial maximum and constitute an ideal system for disentangling the effects of island area, age and geographic isolation on genetic variability. Of the many reptile species inhabiting this island system, the Aegean wall lizard Podarcis erhardii is an excellent indicator of fragmentation history due to its widespread distribution and poor over-water dispersal abilities. In this study, we utilize a detailed record of Holocene fragmentation to investigate the effects of island history on wall lizard mitochondrial and nuclear microsatellite diversity. Findings show that the spatial distribution of mitochondrial haplotypes reflects historical patterns of fragmentation rather than geographic proximity per se. In keeping with neutral bottleneck theory, larger and younger islands retain more nuclear genetic variation than smaller, older islands. Conversely, there is no evidence of an effect of isolation by distance or effect of distance to the nearest larger landmass on genetic variability, indicating little gene flow between islands. Lastly, population-specific measures of genetic differentiation are inversely correlated with island area, suggesting that smaller islands exhibit greater divergence due to their greater susceptibility to drift. Taken together, these results suggest that both island area and time since isolation are important predictors of genetic variation and that these patterns likely arose through the progressive fragmentation of ancestral diversity and the ensuing cumulative effects of drift.

  12. GIPSy: Genomic island prediction software.

    Science.gov (United States)

    Soares, Siomar C; Geyik, Hakan; Ramos, Rommel T J; de Sá, Pablo H C G; Barbosa, Eudes G V; Baumbach, Jan; Figueiredo, Henrique C P; Miyoshi, Anderson; Tauch, Andreas; Silva, Artur; Azevedo, Vasco

    2016-08-20

    Bacteria are highly diverse organisms that are able to adapt to a broad range of environments and hosts due to their high genomic plasticity. Horizontal gene transfer plays a pivotal role in this genome plasticity and in evolution by leaps through the incorporation of large blocks of genome sequences, ordinarily known as genomic islands (GEIs). GEIs may harbor genes encoding virulence, metabolism, antibiotic resistance and symbiosis-related functions, namely pathogenicity islands (PAIs), metabolic islands (MIs), resistance islands (RIs) and symbiotic islands (SIs). Although many software for the prediction of GEIs exist, they only focus on PAI prediction and present other limitations, such as complicated installation and inconvenient user interfaces. Here, we present GIPSy, the genomic island prediction software, a standalone and user-friendly software for the prediction of GEIs, built on our previously developed pathogenicity island prediction software (PIPS). We also present four application cases in which we crosslink data from literature to PAIs, MIs, RIs and SIs predicted by GIPSy. Briefly, GIPSy correctly predicted the following previously described GEIs: 13 PAIs larger than 30kb in Escherichia coli CFT073; 1 MI for Burkholderia pseudomallei K96243, which seems to be a miscellaneous island; 1 RI of Acinetobacter baumannii AYE, named AbaR1; and, 1 SI of Mesorhizobium loti MAFF303099 presenting a mosaic structure. GIPSy is the first life-style-specific genomic island prediction software to perform analyses of PAIs, MIs, RIs and SIs, opening a door for a better understanding of bacterial genome plasticity and the adaptation to new traits.

  13. Bamboo Diversity in Sumba Island

    Directory of Open Access Journals (Sweden)

    KARSONO

    2005-04-01

    Full Text Available Bamboo is one of the economic plant which grow widely in the villages and have been used by the local people in the villages. Indonesia has about 10% of the world bamboo, 50% among them was endemic to Indonesia. According Widjaja (2001 Lesser Sunda Island which consists of Lombok, Sumbawa, Flores, Timor, Sumba and other small island eastern of Flores has 14 bamboo species, however, the information from the Sumba Island was lacking because of lacking data from this area except one species which was proposed by S. Soenarko in 1977 where the type specimens was collected by Iboet 443 in 1925. To fullfill data from the Sumba Island, an exploration to this area has been conducted on July 2003. The observation was done in West Sumba and East Sumba District, especially in two natioal parks at both districts. According to this inventory study in the Sumba Island, there were 10 bamboo species in Sumba Island, 1 species among them (Dinochloa sp. was a new species which has not been collected before, whereas the other species (Dinochloa kostermansiana has a new addition record from this area. The bamboo species in Sumba Island were Bambusa blumeana, Bambusa vulgaris, Dendocalamus asper, Dinochloa kostermansiana, Dinochloa sp., Gigantochloa atter, Nastus reholtumianus, Phyllostachys aurea, Schisotachyum brachycladum and Schizostachyum lima. From 10 recorded species, the genera Dinochloa and Nastus grow wild in the forest, whereas another species grow widly or cultivated in the garden. Furthermore, the genus Dinochloa was the only genus grow climbing. The endemic species found in Sumba Island was Nastus reholttumianus, whereas Dinochloa kostermansiana was also found in Flores Island.

  14. Island Bay Wilderness study area : Island Bay National Wildlife Refuge

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This document is a brief report on a wilderness study area located in the Island Bay National Wildlife Refuge. It discusses the history of the study area, its...

  15. Illa se iactet in aula!

    Directory of Open Access Journals (Sweden)

    Bertomeu, María Julia

    2010-06-01

    Full Text Available More than a few of Kant’s contemporaries, including some of his disciples, were sharply critical of the systematic character of his philosophy, and, markedly, of the philosophical prose in which this character was expressed. Others, on the contrary, found solace in the prospect of seeing the philosopher either isolated or trapped in the purely speculative realm of the academic room, in the good —or bad— company of all the metaphysical politicians of the time: «illa se iactet in aula!» However, fearful that the walls or the metaphorical bars of the room were not enough to contain the «popular» propagation of Kant’s ideas, they completed —in line with Burke— Virgilio’s poem, distinctly alluding to surely less symbolic bars: «Illa se iactet in aula Aeolus, et clauso ventorum carcere regnet». Kant replied in time, writing both to each group separately and to everyone at once. But he did it always from his fiercely held conviction about the importance of both a philosophical theory and a methodological discipline, which, even when «unpopular» in the beginning, he considered essential elements of a moral and political practice that was so hostile toward moral paternalism as it was to its counterpart, a (paternalistic political despotism.

    No pocos contemporáneos de Kant, incluidos algunos de sus discípulos, fueron pródigos en la crítica mordaz del carácter sistemático de su filosofía, y señaladamente, de la prosa filosófica en que ese carácter se expresaba. Otros, en cambio, no se privaron de manifestar el deseo de ver al filósofo aislado o acorralado en el recinto puramente especulativo del aula académica, en la buena —o en la mala— compañía de todos los políticos metafísicos de la época: «illa se iactet in aula!» Pero, temerosos de que los muros o los barrotes metafóricos del aula no bastaran a contener la propagación «popular» de las ideas del filósofo, completaron

  16. Sediment Management Options for Galveston Island, Texas

    Science.gov (United States)

    2015-06-15

    plants on both ends of the island are the best strategies to widen the beaches of Galveston Island, improve tourism , and better protect the island...Benedet, L., and Waters, J.P. (2004). “Coupling geological concepts with historical data sets in a MIS framework to prospect for beach-compatible sands on...are the best strategies to widen the beaches of Galveston Island, improve tourism , and better protect the island from storms. If there are funding

  17. Papahanaumokuakea - Laysan Island Restoration 2011

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This project supports restoration activities at Laysan Island. Staff and volunteers continue efforts to eradicate alien invasive species such as Indian dropseed...

  18. Synthesizing knowledge of ocean islands

    Science.gov (United States)

    Jefferson, Anne J.; Lees, Jonathan M.; McClinton, Tim

    2011-11-01

    AGU Chapman Conference on the Galápagos as a Laboratory for the Earth Sciences; Puerto Ayora, Galápagos, Ecuador, 25-30 July 2011 An inspiration for Darwin's theory of evolution, the Galápagos Islands and surrounding waters are a natural laboratory for a wide range of Earth science topics. The Galápagos are perfectly situated for geophysical and geochemical investigations of deep-Earth processes at a hot spot, and proximity to a spreading center allows exploration of hot spot-ridge interactions. Several highly active volcanoes show rapid deformation facilitating investigation of melt transport paths and volcanic structure. The islands exhibit a range of ages, eruptive styles, and climatic zones that allow analysis of hydrogeologic and geomorphic processes. The Galápagos Islands are a World Heritage Site and are an ideal setting for developing an integrated biological and geological understanding of ocean island evolution.

  19. Papahanaumokuakea - Laysan Island Restoration 2009

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This project will support restoration activities at Laysan Island. Staff and volunteers continue efforts to eradicate alien invasive species such as Indian dropseed...

  20. Papahanaumokuakea - Laysan Island Restoration 2010

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The Goal of the Laysan Island Restoration is to restore Laysan to a "Pristine" state which would require minimal monitoring and habitat for Endemic Endangered...

  1. Hawaiian Islands Wilderness proposal announcement

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This document is a letter from the Bureau of Sport Fisheries and Wildlife stating that documents pertaining to the Hawaiian Islands Wilderness proposal have been...

  2. Three Mile Island Accident Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Three Mile Island Accident Data consists of mostly upper air and wind observations immediately following the nuclear meltdown occurring on March 28, 1979, near...

  3. H-deficient blood groups ( Bombay) of Reunion Island.

    Science.gov (United States)

    Gerard, G; Vitrac, D; Le Pendu, J; Muller, A; Oriol, R

    1982-11-01

    Forty-two H-deficient individuals (lacking H antigen on erythrocytes) with anti-H in their sera were found on Reunion Island. A, B, and AB Bombay subjects had small but detectable amounts of A and/or B antigens on erythrocytes. All the H-deficient phenotypes tested were nonsecretors of ABH in their saliva, and one-third were Lewis negative. Fifty-three of the 108 (49%) unaffected members in the 14 Bombay pedigrees analyzed were se/se, showing that the families were selected for the nonsecretor trait, and suggesting that the Bombay probands used to select the families have se/se genotype. In accordance with this concept, all the children from Bombay nonsecretor x unaffected nonsecretor matings were se/se. Segregation of H and Se is compatible with the genetic model proposing that Se and H are closely linked structural genes, and the analysis of the present and previously published Bombay pedigrees strongly supports this model.

  4. Buenas piezas. Cuando se siente

    OpenAIRE

    Martínez, Borja; Lo Siento; Molinero Domingo, Silvia

    2016-01-01

    Entrevista a Borja Martínez de Lo Siento Studio. Viajamos a Barcelona para conocer el espacio en el que Lo Siento desarrolla su trabajo. Se trata de un estudio reconocido por los proyectos de identidad gráfica, packaging, diseño editorial y especialmente valorados por la creación de atractivas tipografías. Han recibido varios Laus y Grand Laus, premios organizados por la Asociación de Diseñadores Gráficos y Directores de Arte (ADG-FAD), por ejemplo al álbum The Mill...

  5. El derecho costarricense se actualiza

    OpenAIRE

    Romero-Pérez, Jorge Enrique

    2014-01-01

    Durante muchos años el derecho costarricense se mantuvo estático, tranquilo frente a los cambios sociales, políticos, económicos, religiosos, etc. Parecía que el sistema jurídico era indiferente a la movilidad en las demás estructuras del Sistema Social. Esto, superficialmente, indujo a más de un observador, pétreo, reaccionario y resistente en las transformaciones operadas en el resto de la realidad del país. Sin embargo, tales cambios en las estructuras y en las relaciones globales paulatin...

  6. Eco-geomorphic processes that maintain a small coral reef island: Ballast Island in the Ryukyu Islands, Japan

    Science.gov (United States)

    Kayanne, Hajime; Aoki, Kenji; Suzuki, Takuya; Hongo, Chuki; Yamano, Hiroya; Ide, Yoichi; Iwatsuka, Yuudai; Takahashi, Kenya; Katayama, Hiroyuki; Sekimoto, Tsunehiro; Isobe, Masahiko

    2016-10-01

    Landform changes in Ballast Island, a small coral reef island in the Ryukyu Islands, were investigated by remote sensing analysis and a field survey. The area of the island almost doubled after a mass coral bleaching event in 1998. Coral branches generated by the mass mortality and broken by waves were delivered and stocked on a reef flat and accumulated to expand the area of the island. In 2012 high waves generated by typhoons also changed the island's topography. Overall, the island moved in the downdrift direction of the higher waves. Waves impacting both sides of the island piled up a large volume of coral gravels above the high-tide level. Eco-geomorphic processes, including a supply of calcareous materials from the corals on the same reef especially during stormy wave conditions, were key factors in maintaining the dynamic topographic features of this small coral reef island.

  7. Aleutian Canada goose transplant from Buldir Island to Agattu Island, Aleutian Islands, Alaska, summer 1984

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Geese were captured on Buldir Island by searching the upper and lower edge of the lowland tall plant association where tall plants offer cover and short plants offer...

  8. Mammals evolve faster on smaller islands.

    Science.gov (United States)

    Millien, Virginie

    2011-07-01

    Island mammals often display remarkable evolutionary changes in size and morphology. Both theory and empirical data support the hypothesis that island mammals evolve at faster rates than their mainland congeners. It is also often assumed that the island effect is stronger and that evolution is faster on the smallest islands. I used a dataset assembled from the literature to test these assumptions for the first time. I show that mammals on smaller islands do indeed evolve more rapidly than mammals on larger islands, and also evolve by a greater amount. These results fit well the theory of an evolutionary burst due to the opening of new ecological opportunities on islands. This evolutionary burst is expected to be the strongest on the smallest islands where the contrast between the island and the mainland environments is the most dramatic.

  9. Bryophytes from Simeonof Island in the Shumagin Islands, southwestern Alaska

    Science.gov (United States)

    Schofield, W.B.; Talbot, S. S.; Talbot, S.L.

    2004-01-01

    Simeonof Island is located south of the Alaska Peninsula in the hyperoceanic sector of the middle boreal subzone. We examined the bryoflora of Simeonof Island to determine species composition in an area where no previous collections had been reported. This field study was conducted in sites selected to represent the spectrum of environmental variation within Simeonof Island. Data were analyzed using published reports to compare bryophyte distribution patterns at three levels, the Northern Hemisphere, North America, and Alaska. A total of 271 bryophytes were identified: 202 mosses and 69 liverworts. The annotated list of species for Simeonof Island expands the known range for many species and fills distribution gaps within Hulte??n's Western Pacific Coast district. Maps and notes on the distribution of 14 significant distribution records are presented. Compared with bryophyte distribution in the Northern Hemisphere, the bryoflora of Simeonof Island primarily includes taxa of boreal (55%), temperate (20%), arctic (10%), and cosmopolitan (8%) distribution; 6% of the moss flora are western North America endemics. A description of the bryophytes present in the vegetation and habitat types is provided as is a quantitative analysis of the most frequently occurring bryophytes in crowberry heath.

  10. Volcanic hazard on Deception Island (South Shetland Islands, Antarctica)

    Science.gov (United States)

    Bartolini, S.; Geyer, A.; Martí, J.; Pedrazzi, D.; Aguirre-Díaz, G.

    2014-09-01

    Deception Island is the most active volcano in the South Shetland Islands and has been the scene of more than twenty identified eruptions over the past two centuries. In this contribution we present the first comprehensive long-term volcanic hazard assessment for this volcanic island. The research is based on the use of probabilistic methods and statistical techniques to estimate volcanic susceptibility, eruption recurrence and the most likely future eruptive scenarios. We perform a statistical analysis of the time series of past eruptions and the spatial extent of their products, including lava flows, fallout, pyroclastic density currents and lahars. The Bayesian event tree statistical method HASSET is applied to calculate eruption recurrence, while the QVAST tool is used in an analysis of past activity to calculate the possibility that new vents will open (volcanic susceptibility). On the basis of these calculations, we identify a number of significant scenarios using the GIS-based VORIS 2.0.1 and LAHARZ software and evaluate the potential extent of the main volcanic hazards to be expected on the island. This study represents a step forward in the evaluation of volcanic hazard on Deception Island and the results obtained are potentially useful for long-term emergency planning.

  11. Marine geological study of the continental shelf around Heugsan island, SE Korea

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Chi Won; Jin, Jae Hwa; Shin, Won Cheol; Kim, Won Sik; Kim, Jung Ki; Kim, Sang Woo; Lee, Ho Yong; Chang, Cheong Hae; Kim, Sung Woo; Lee, Yoon Oh; Park, Young Soo; Bahng, Hyo Ky [Korea Inst. of Geology Mining and Materials, Taejon (Korea, Republic of)

    1995-12-01

    This annual report is a result of marine geological and geophysical surveys conducted in 1995 to obtain a variety of data available for mapping Korean continental shelf geology. The study area is situated off city of Mokpo, comprising a rectangle enclosed by lines connecting between 34 degree 30`N and 35 degree 00`N, and between 125 degree 00`E and 126 degree 00`E. Geophysical surveys included water-depth sounding, sea floor side scanning, 3.5 khz sub-bottom profiling, air gun seismic reflection profiling and measurement of total magnetic intensity. During geological terms, 102 grab samples were collected from a grid of 4 miles x 4 miles spaced on the sea floor, and 31 sediment cores were raised from the proper sites determined by preliminary interpretation of geophysical data. The survey vessel, R/V Tamhae, was positioned by a GPS system (Loran-GPS 10X; Trimble Navigation Co.). The sea floor is largely covered with seven distinct types of surface and near-surface sediments; (1) massive sand, (2) homogeneous clay, (3) laminated silt, (4) bioturbated muddy sand, (5) massive silt, (6) bioturbated gravelly muddy sand, and (7) shell aggregate. Based on synthetic interpretation of high-resolution (3.5 khz) seismic data and correlated sedimentary facies, the shallow substratum comprises low-stand, transgressive and high-stand systems tracts (LST, TST and HST, respectively) formed during the last glacio-eutectics regression and transgression. Air gun seismic profiles show that pre-Pleistocene sediments comprise 4 sequences designated as B, C, D, and E, respectively. (author). 63 refs.

  12. Oceanographic Survey in waters of the Northern Mariana Islands, Guam, and Micronesia (SE1003, EK60)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The goals of the cruise were to collect acoustic backscatter and oceanographic data at the vicinity of CNMI, Guam, and in the northern part of Micronesia. Data...

  13. Cetacean Ecology Survey at North Western Hawaiian Islands (SE1303, EK60)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The goal of the cruise was to collect data on the abundance, distribution, stock structure, and habitat of cetaceans in the Papah?naumoku?kea Marine National...

  14. Se metallomics during lactic fermentation of Se-enriched yogurt.

    Science.gov (United States)

    Palomo, María; Gutiérrez, Ana M; Pérez-Conde, M Concepción; Cámara, Carmen; Madrid, Yolanda

    2014-12-01

    Selenium biotransformation by lactic acid bacteria during the preparation of Se-enriched yogurt was evaluated. The study focused on the distribution of selenium in the aqueous soluble protein fraction and the detection of selenoamino acids. Screening of selenium in Tris-buffer-urea soluble fraction was carried out by sodium dodecyl sulphate polyacrylamide gel electrophoresis after pre-fractionating with asymmetric field flow fractionation using inductively coupled plasma-mass spectrometry as the detector. Selenium-containing fractions were identified by peptide mapping using nano LC-ESI/LTQMS. Proteins such as thioredoxin, glutaredoxin, albumin, β-lactoglobulin, and lactoperoxidase were identified in the selenium-containing fraction. All these proteins were detected in both the control and the selenium-enriched yogurt except chaperones, which were only detected in the control samples. Chaperones are heat-shock proteins expressed in response to elevated temperature or other cellular stresses. Selenium may have an effect on chaperones expression in Lactobacillus. For the amino acids analysis, selenocysteine was the primary seleno-containing species.

  15. Se equivocó el masoreta ¿se equivocaba?

    Directory of Open Access Journals (Sweden)

    Fernández Tejero, Emilia

    2009-12-01

    Full Text Available This article has a didactic purpose; it is not aimed at scholars of the Masora but rather at researchers in closely associated areas. The editions of Hebrew Biblical manuscripts and critical studies that have been published recently are particularly useful tools for those who wish to delve into other areas of research such as the history of the Hebrew Biblical text, its exegesis or the origins of grammar. Here, the author concentrates on the analysis of three issues: variant formulations of a same information; coherence between a text and its Masorah, and the possible discrepancies among sources.

    Este artículo, de carácter didáctico, no está destinado a los estudiosos de la Masora, sino a investigadores de áreas cercanas. Las ediciones de manuscritos y los estudios publicados en los últimos años son instrumentos de gran utilidad para quienes deseen adentrarse en un campo de investigación con repercusión en otras áreas tales como la historia del texto bíblico hebreo, su exégesis o los inicios de la gramática. Se analizan tres cuestiones: distinta formulación para una misma noticia, coherencia entre un texto y su masora y posibles discrepancias entre las fuentes.

  16. Main: SE2PVGRP1 [PLACE

    Lifescience Database Archive (English)

    Full Text Available SE2PVGRP1 S000101 17-May-1998 (last modified) kehi SE2 (stem element 2) of bean (P.v.) GRP...1.8 gene; part of SE2 element; stem; SE2; GRP; GRP1; bean (Phaseolus vulgaris) TTNNNGTAGCTAGTGTATTTGTAT ...

  17. of Canary Islands

    Directory of Open Access Journals (Sweden)

    Eduardo Parra López

    2006-01-01

    Full Text Available La ultraperiferia añade a los problemas inherentes a la insularidad los derivados de la lejanía respecto a los principales centros de aprovisionamiento, la considerable escasez de recursos, la fragmentación del territorio, y por tanto, de los mercados. En las últimas décadas se ha ido tomando conciencia del impacto de la ultraperiferia sobre el desarrollo de las regiones y estados insulares. La ultraperiferia es un atributo geográfico que condiciona las opciones de desarrollo y el tipo de especialización de las economías, afecta a la competitividad y a las estrategias empresariales. El agroturismo es una de las actividades que está adquiriendo mayor relevancia en el marco de la diversificación de las explotaciones agrarias, agropecuarias y del turismo. Por ello, la necesidad de activar económicamente las zonas rurales de territorios insulares ultraperiféricos, así como la valorización de las producciones agrarias y agropecuarias vinculadas a la actividad turística, se presentan como elementos vitales para estrategias de diversificación, transformación y mejora de la competitividad y calidad de las mismas. El presente trabajo tiene como objetivo analizar los cambios y el posible impacto que supone la incorporación del agroturismo como una alternativa al turismo de sol y playa, de incremento de rentas de las familias, del desarrollo rural y de nuevas formas de turismo. Se pretende establecer un análisis estratégico del agroturismo, analizar el lado de la oferta y demanda, para sentar la base de las razones de fomentar esta actividad.

  18. A transferable force field for CdS-CdSe-PbS-PbSe solid systems

    NARCIS (Netherlands)

    Fan, Zhaochuan; Koster, Rik S.; Wang, Shuaiwei; Fang, Changming; Yalcin, Anil O.; Tichelaar, Frans D.; Zandbergen, Henny W.; van Huis, Marijn A.; Vlugt, Thijs J. H.

    2014-01-01

    A transferable force field for the PbSe-CdSe solid system using the partially charged rigid ion model has been successfully developed and was used to study the cation exchange in PbSe-CdSe heteronanocrystals [A. O. Yalcin et al., "Atomic resolution monitoring of cation exchange in CdSe-PbSe heterona

  19. Late Quaternary climate change shapes island biodiversity

    DEFF Research Database (Denmark)

    Weigelt, Patrick; Steinbauer, Manuel; Cabral, Juliano

    2016-01-01

    Island biogeographical models consider islands either as geologically static with biodiversity resulting from ecologically neutral immigration–extinction dynamics1, or as geologically dynamic with biodiversity resulting from immigration–speciation–extinction dynamics influenced by changes in island...... sea levels3, 4 and caused massive changes in island area, isolation and connectivity5, orders of magnitude faster than the geological processes of island formation, subsidence and erosion considered in island theory2, 6. Consequences of these oscillations for present biodiversity remain unassessed5, 7...

  20. Plan de acción ambiental para el municipio de Corn Island

    Directory of Open Access Journals (Sweden)

    Romer Altamirano Guerrero

    2004-02-01

    Full Text Available El desorden territorial, producto del inadecuado uso actual del suelo, el irracional de los recursos naturales y el deterioro de la calidad ambiental del Municipio de Corn Island, son los puntos de partida del presente estudio que consiste en la elaboración del Plan de ordenamiento Ambiental del Municipio (POA de Corn Island. Dicho POA se enmarca en la estrategia del Plan de Acción para el manejo de los recursos naturales del Municipio de Corn Island, realizado en 1999, y posteriormente impulsado por la Unidad de Zonas Costeras y Humedales de la Dirección de Biodiversidad y Recursos Naturales del Ministerio del Ambiente y los Recursos Naturales (MARENA y la Alcaldía de Corn Island. El Plan de Acción define como una de sus prioridades, estructurar el POA para el Municipio.

  1. Parker River National Wildlife Refuge Plum Island (Pond Island, Thacher's Island Refuges): Annual narrative report: Calendar year 1990

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Parker River NWR, Pond Island NWR, and Tacher's Island NWR outlines Refuge accomplishments during the 1990 calendar year. The report...

  2. Parker River National Wildlife Refuge Plum Island (Pond Island, Thacher's Island Refuges): Annual narrative report: Calendar year 1991

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Parker River NWR, Pond Island NWR, and Tacher's Island NWR outlines Refuge accomplishments during the 1991 calendar year. The report...

  3. Aleutian Canada goose survey at Alaid and Nizki Islands, Near Island Group, Aleutian Islands, Alaska, spring 1984

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Arctic foxes, introduced to Alaid and Nizki islands in 1911, 1920 and 1935, were removed from the two islands in 1975 and 1976 by means of shooting and trapping...

  4. Parker River National Wildlife Refuge Plum Island (Pond Island, Thacher's Island Refuges): Annual narrative report: Calendar year 1989

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Parker River NWR, Pond Island NWR, and Tacher's Island NWR outlines Refuge accomplishments during the 1989 calendar year. The report...

  5. First record of Mengenillidae (Insecta, Strepsiptera from the Balearic Islands

    Directory of Open Access Journals (Sweden)

    del Río, Ricardo

    2014-12-01

    Full Text Available This is the first report of the strepsipteran species Eoxenos laboulbenei De Peyerimhoff, 1919 and Mengenilla sp. Hofeneder, 1910 on the Balearic Islands. Several males of E. laboulbenei were found in samples obtained using a UV light suction trap on a cattle farm in Majorca in October 2012. A number of empty male and female puparia of Mengenilla sp. were found in Ibiza in April 2003.Se cita por primera vez la especie Eoxenos laboulbenei De Peyerimhoff, 1919 en las Islas Baleares. Varios machos de esta especie se encontraron en capturas obtenidas con una trampa de luz ultravioleta situada en una finca ganadera de Mallorca durante el mes de octubre de 2012. Varios puparios de machos y hembras de Mengenilla sp. se encontraron también en Ibiza en abril de 2013.

  6. Electrical and photovoltaic properties of Cu-doped p-GaSe/n-InSe heterojunction

    Science.gov (United States)

    Shigetomi, S.; Ikari, T.

    2000-08-01

    GaSe(Cu)/InSe heterojunctions have been formed by bringing the cleavage surface of undoped n-InSe and Cu-doped p-GaSe into direct contact. Transport and phototransport properties are studied by the measurements of capacitance-voltage, current-voltage, and the spectral response of short-circuit current. Moreover, the efficiency parameters under illumination are estimated by using the open-circuit voltage and short-circuit current. These characteristics of GaSe(Cu)/InSe heterojunctions are compared with those of GaSe(Un)/InSe heterojunctions fabricated by undoped p-GaSe and n-InSe. The series resistance of GaSe(Cu)/InSe heterojunctions is found, the value of which is about 103 times lower than the corresponding value of GaSe(Un)/InSe heterojunctions. A short-circuit current density of 9.0 mA/cm2 and an open-circuit voltage of 0.42 V on GaSe(Cu)/InSe heterojunctions are obtained under illumination of 120 mW/cm2 of a halogen lamp. The short-circuit current of GaSe(Cu)/InSe heterojunctions is about one order of magnitude lager than that of GaSe(Un)/InSe heterojunctions. These experimental results indicate that the low-resistivity of Cu-doped GaSe is effective for the electrical and photovoltaic properties of GaSe/InSe heterojunctions.

  7. Late Quaternary climate change shapes island biodiversity.

    Science.gov (United States)

    Weigelt, Patrick; Steinbauer, Manuel Jonas; Cabral, Juliano Sarmento; Kreft, Holger

    2016-04-07

    Island biogeographical models consider islands either as geologically static with biodiversity resulting from ecologically neutral immigration-extinction dynamics, or as geologically dynamic with biodiversity resulting from immigration-speciation-extinction dynamics influenced by changes in island characteristics over millions of years. Present climate and spatial arrangement of islands, however, are rather exceptional compared to most of the Late Quaternary, which is characterized by recurrent cooler and drier glacial periods. These climatic oscillations over short geological timescales strongly affected sea levels and caused massive changes in island area, isolation and connectivity, orders of magnitude faster than the geological processes of island formation, subsidence and erosion considered in island theory. Consequences of these oscillations for present biodiversity remain unassessed. Here we analyse the effects of present and Last Glacial Maximum (LGM) island area, isolation, elevation and climate on key components of angiosperm diversity on islands worldwide. We find that post-LGM changes in island characteristics, especially in area, have left a strong imprint on present diversity of endemic species. Specifically, the number and proportion of endemic species today is significantly higher on islands that were larger during the LGM. Native species richness, in turn, is mostly determined by present island characteristics. We conclude that an appreciation of Late Quaternary environmental change is essential to understand patterns of island endemism and its underlying evolutionary dynamics.

  8. Contrasting Food Web Factor and Body Size Relationships with Hg and Se Concentrations in Marine Biota

    Science.gov (United States)

    Karimi, Roxanne; Frisk, Michael; Fisher, Nicholas S.

    2013-01-01

    Marine fish and shellfish are primary sources of human exposure to mercury, a potentially toxic metal, and selenium, an essential element that may protect against mercury bioaccumulation and toxicity. Yet we lack a thorough understanding of Hg and Se patterns in common marine taxa, particularly those that are commercially important, and how food web and body size factors differ in their influence on Hg and Se patterns. We compared Hg and Se content among marine fish and invertebrate taxa collected from Long Island, NY, and examined associations between Hg, Se, body length, trophic level (measured by δ15N) and degree of pelagic feeding (measured by δ13C). Finfish, particularly shark, had high Hg content whereas bivalves generally had high Se content. Both taxonomic differences and variability were larger for Hg than Se, and Hg content explained most of the variation in Hg:Se molar ratios among taxa. Finally, Hg was more strongly associated with length and trophic level across taxa than Se, consistent with a greater degree of Hg bioaccumulation in the body over time, and biomagnification through the food web, respectively. Overall, our findings indicate distinct taxonomic and ecological Hg and Se patterns in commercially important marine biota, and these patterns have nutritional and toxicological implications for seafood-consuming wildlife and humans. PMID:24019976

  9. 33 CFR 80.1122 - Channel Islands Harbor, CA.

    Science.gov (United States)

    2010-07-01

    ...) A line drawn from Channel Islands Harbor South Jetty Light 2 to Channel Islands Harbor Breakwater South Light 1. (b) A line drawn from Channel Islands Harbor Breakwater North Light to Channel Islands Harbor North Jetty Light 5....

  10. Petit Manan National Wildlife Refuge and satellite stations Cross Island National Wildlife Refuge, Seal Island National Wildlife Refuge, Franklin Island National Wildlife Refuge, Pond Island National Wildlife [Refuge]: Annual narrative report: Calendar year 1991

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Petit Manan NWR, Cross Island NWR, Seal Island NWR, Franklin Island NWR, and Pond Island NWR outlines Refuge accomplishments during...

  11. "Mosquitoes collected on Weno Island, Romonum Island and Piis Island, Chuuk State, Federated States of Micronesia (Diptera : Culicidae)"

    OpenAIRE

    "NODA, Shinichi"

    2013-01-01

    Mosquito larval surveys were carried out on Weno Island, Romonum Island and Piis Island in August 2011. Larvae were collected from 133 natural and artificial habitats. A total of 1,761 larvae belonging to nine species including one unidentified species were collected. On Weno Island, eight species, Aedes hensilli, Ae. albopictus, Ae. lamelliferus, Aedes sp., Culex quinquefasciatus, Cx. carolinensis, Cx. annulirostris and Lutzia vorax, were collected. On Romonum Island,  four sp...

  12. The Big Island of Hawaii

    Science.gov (United States)

    2002-01-01

    Boasting snow-covered mountain peaks and tropical forest, the Island of Hawaii, the largest of the Hawaiian Islands, is stunning at any altitude. This false-color composite (processed to simulate true color) image of Hawaii was constructed from data gathered between 1999 and 2001 by the Enhanced Thematic Mapper plus (ETM+) instrument, flying aboard the Landsat 7 satellite. The Landsat data were processed by the National Oceanographic and Atmospheric Administration (NOAA) to develop a landcover map. This map will be used as a baseline to chart changes in land use on the islands. Types of change include the construction of resorts along the coastal areas, and the conversion of sugar plantations to other crop types. Hawaii was created by a 'hotspot' beneath the ocean floor. Hotspots form in areas where superheated magma in the Earth's mantle breaks through the Earth's crust. Over the course of millions of years, the Pacific Tectonic Plate has slowly moved over this hotspot to form the entire Hawaiian Island archipelago. The black areas on the island (in this scene) that resemble a pair of sun-baked palm fronds are hardened lava flows formed by the active Mauna Loa Volcano. Just to the north of Mauna Loa is the dormant grayish Mauna Kea Volcano, which hasn't erupted in an estimated 3,500 years. A thin greyish plume of smoke is visible near the island's southeastern shore, rising from Kilauea-the most active volcano on Earth. Heavy rainfall and fertile volcanic soil have given rise to Hawaii's lush tropical forests, which appear as solid dark green areas in the image. The light green, patchy areas near the coasts are likely sugar cane plantations, pineapple farms, and human settlements. Courtesy of the NOAA Coastal Services Center Hawaii Land Cover Analysis project

  13. Benthic Mapping in Long Island Sound

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — QTCView is used with an incorporated depthfinder to create a sonar map of the bottom to the west of the Charles Island, in Long Island Sound in Connecticut waters....

  14. Bair Island Restoration Project Monitoring Plan 2003

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Bair Island is located adjacent to the San Francisco Bay in Redwood City, San Mateo County, California (Figure 1). Historically, Bair Island was part of a large...

  15. Bair Island Restoration Project Monitoring Plan 2004

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Bair Island is located adjacent to the San Francisco Bay in Redwood City, San Mateo County, California (Figure 1). Historically, Bair Island was part of a large...

  16. Libraries in Rhode Island: MedlinePlus

    Science.gov (United States)

    ... this page: https://medlineplus.gov/libraries/rhodeisland.html Libraries in Rhode Island To use the sharing features ... Island Hospital / a Lifespan Partner Peters Health Sciences Library 593 Eddy Street Providence, RI 02903-4971 401- ...

  17. Obesity and Native Hawaiians/Pacific Islanders

    Science.gov (United States)

    ... Population Profiles > Native Hawaiian/Other Pacific Islander > Obesity Obesity and Native Hawaiians/Pacific Islanders Native Hawaiians/Pacific ... youthonline . [Accessed 05/25/2016] HEALTH IMPACT OF OBESITY More than 80 percent of people with type ...

  18. Bartolome Island, Galapagos Stable Oxygen Calibration Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Galapagos Coral Stable Oxygen Calibration Data. Sites: Bartolome Island: 0 deg, 17'S, 90 deg 33' W. Champion Island: 1 deg, 15'S, 90 deg, 05' W. Urvina Bay (Isabela...

  19. Thin metal island plasmon sensor

    Science.gov (United States)

    Meriaudeau, Fabrice; Downey, Todd R.; Passian, A.; Oden, Patrick I.; Wig, A. G.; Crilly, P. B.; Mangeant, S.; Ferrell, Trinidad L.

    1998-12-01

    The effects of the local dielectric environment on the surface-plasmon resonances of annealed gold-island films are studied experimentally and modeled theoretically. Gold- island films were annealed at 600 degree(s)C to produce spheroidal shape particles which exhibit well-resolved resonances in polarized, angle-resolved, absorption spectra. These resonances are shifted in different amounts by the depolarization effect of the surrounding medium (liquids with various refraction indices). Cross-section calculations based upon non-retarded, single-particle, dielectric interaction for these various configurations are presented and found to be in good agreement with the experimental observations.

  20. Streamlined Islands in Ares Valles

    Science.gov (United States)

    2002-01-01

    (Released 10 June 2002) The Science Although liquid water is not stable on the surface of Mars today, there is substantial geologic evidence that large quantities of water once flowed across the surface in the distant past. Streamlined islands, shown here, are one piece of evidence for this ancient water. The tremendous force of moving water, possibly from a catastrophic flood, carved these teardrop-shaped islands within a much larger channel called Ares Valles. The orientation of the islands can be used as an indicator of the direction the water flowed. The islands have a blunt end that is usually associated with an obstacle, commonly an impact crater. The crater is resistant to erosion and creates a geologic barrier around which the water must flow. As the water flows past the obstacle, its erosive power is directed outward, leaving the area in the lee of the obstacle relatively uneroded. However, some scientists have also argued that the area in the lee of the obstacle might be a depositional zone, where material is dropped out of the water as it briefly slows. The ridges observed on the high-standing terrain in the leeward parts of the islands may be benches carved into the rock that mark the height of the water at various times during the flood, or they might be indicative of layering in the leeward rock. As the water makes its way downstream, the interference of the water flow by the obstacle is reduced, and the water that was diverted around the obstacle rejoins itself at the narrow end of the island. Therefore, the direction of the water flow is parallel to the orientation of the island, and the narrow end of the island points downstream. In addition to the streamlined islands, the channel floor exhibits fluting that is also suggestive of flowing water. The flutes (also known as longitudinal grooves) are also parallel to the direction of flow, indicating that the water flow was turbulent and probably quite fast, which is consistent with the hypothesized

  1. Direct observation of microstructures on superconducting single crystals of K x Fe2- y Se2

    Science.gov (United States)

    Tanaka, Masashi; Takeya, Hiroyuki; Takano, Yoshihiko

    2017-02-01

    Potassium-intercalated FeSe has been reported as a superconductor with a superconducting transition temperature (T c) of 30-48 K. However, the relationship among the surface morphology, compositional ratio, and crystal structure has not yet been clarified. This report directly reveals the correspondence among these three characteristics in single crystals with a T c onset of around 44 K by using a microsampling technique. Island-like parts on the surface of the crystals clearly exhibit the K x Fe2Se2 structure with perfect FeSe layers, which is formed in conjunction with the K2Fe4Se5 phase. This results in the appearance of the T c onset at 44 K.

  2. Energy Transition Initiative: Island Energy Snapshot - U.S. Virgin Islands (Fact Sheet)

    Energy Technology Data Exchange (ETDEWEB)

    2015-03-01

    This profile provides a snapshot of the energy landscape of the U.S. Virgin Islands (USVI) - St. Thomas, St. John, and St. Croix. The Virgin Islands archipelago makes up the northern portion of the Lesser Antilles and the western island group of the Leeward Islands, forming the border between the Atlantic Ocean and the Caribbean Sea.

  3. CRED Gridded Bathymetry of Southeast Maro Reef (100-010) in the Northwestern Hawaiian Islands

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — File 100-010b is a 60-m ASCII grid of depth data collected near SE Maro Reef in the Northwestern Hawaiian Islands as of May 2003. This grid has been produced as part...

  4. Reaction kinetics of CuGaSe 2 formation from a GaSe/CuSe bilayer precursor film

    Science.gov (United States)

    Kim, W. K.; Payzant, E. A.; Kim, S.; Speakman, S. A.; Crisalle, O. D.; Anderson, T. J.

    2008-06-01

    The reaction pathway and kinetics of CuGaSe 2 formation were investigated by monitoring the phase evolution of temperature ramp annealed or isothermally soaked bilayer glass/GaSe/CuSe precursor film using time-resolved, in situ high-temperature X-ray diffraction. Bilayer GaSe/CuSe precursor films were deposited on alkali-free thin glass substrates in a migration-enhanced epitaxial deposition system. The initial CuSe phase begins to transform to β-Cu 2-xSe at around 230 °C, followed by CuGaSe 2 formation accompanied by a decrease in the β-Cu 2-xSe peak intensity at around 260 °C. Both the parabolic and Avrami diffusion-controlled reaction models represented the experimental data very well over the entire temperature range (280-370 °C) of the set of isothermal experiments with estimated activation energies of 115(±16) and 124(±19) kJ/mol, respectively. Transmission electron microscopy-energy-dispersive X-ray spectrometry (TEM-EDS) analysis suggests that CuGaSe 2 forms at the interface of the initial GaSe and CuSe layers.

  5. Heteroepitaxy of Layered Compound InSe and InSe/GaSe onto GaAs Substrates

    Science.gov (United States)

    Budiman, Maman; Yamada, Akira; Konagai, Makoto

    1998-07-01

    The van der Waals epitaxy of InSe films was performed on (111)GaAs surface at the growth temperature of 350°C. A spiral trigonal structure was observed on the surface of the InSe films. To improve crystal quality of the InSe films, their orientation control was investigated. The growth rate decreased rapidly as the growth temperature increased and no InSe films were obtained at growth temperatures higher than 480°C. At growth temperatures of 450°C and higher, a double-domain structure was observed, probably due to the coexistence of In4Se3 phase in the films. Therefore, the InSe film was directly grown on c-axis inclined GaSe, and it was revealed that InSe films were more easily grown on GaSe than on (001)GaAs surface, due to the same crystal structure. Furthermore, for fabrication of the quantum well structure, heteroepitaxial growth of GaSe/InSe/GaSe films on (001)GaAs substrate was investigated.

  6. Seabirds of Easter Island, Salas y Gómez Island and Desventuradas Islands, southeastern Pacific Ocean

    Directory of Open Access Journals (Sweden)

    Marcelo A Flores

    2014-10-01

    Full Text Available We reviewed available information on seabirds inhabiting Easter Island, Salas y Gómez Island and Desventuradas Islands and their adjacent waters through an analysis of published and grey literature. Results obtained indicate that a total of 37 species are present in the study area and that, among the orders represented, the Procellariiformes and Charadriiformes are the dominant taxa (29 species. Moreover, the family Procellariidae is represented by 13 species and Laridae by 7 species. There has been an increase in new records over the past six years but no systematic studies have been developed. The need for further research that focuses on ecological aspects and anthropogenic impacts is critical in order to develop adequate conservation strategies.

  7. The Limacidae of the Canary Islands

    NARCIS (Netherlands)

    Regteren Altena, van C.O.

    1950-01-01

    CONTENTS Introduction............... 3 Systematic survey of the Limacidae of the central and western Canary Islands 5 Biogeographical notes on the Limacidae of the Canary Islands . . . . 21 Alphabetical list of the persons who collected or observed Limacidae in the Canary Islands.............. 31 Li

  8. 46 CFR 7.70 - Folly Island, SC to Hilton Head Island, SC.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 1 2010-10-01 2010-10-01 false Folly Island, SC to Hilton Head Island, SC. 7.70 Section... BOUNDARY LINES Atlantic Coast § 7.70 Folly Island, SC to Hilton Head Island, SC. (a) A line drawn from the southernmost extremity of Folly Island to latitude 32°35′ N. longitude 79°58.2′ W. (Stono Inlet Lighted...

  9. Electron and hole dynamics in GaSe nanoparticles and GaSe-InSe nanoparticle heterojunctions.

    Science.gov (United States)

    Kelley, David F.; Tu, Haohua; Mogyorosi, Karoly; Chen, Xiang-Bai

    2006-08-01

    Femtosecond polarized transient absorption results are obtained for InSe and GaSe nanoparticles. The results indicate that the transient absorption spectrum of large GaSe particles is dominated by a size-independent, z-polarized hole intraband transition. The small particle spectra exhibit the same z-polarized hole transition and a much more intense x,y-polarized absorption that is assigned to a charge transfer transition from the conduction band to particle surface (edge) states. The intensity of this transition depends on the momentum state (Γ or M) of the electron, and Γ to M electron momentum relaxation results in a 15 ps absorption decay. These results are used to interpret analogous results obtained for mixed GaSe-InSe nanoparticle aggregates, also in the solution phase. The static absorption spectrum of the mixed aggregates exhibits a strong interparticle charge transfer absorption band at an energy slightly higher than the InSe bandgap. Photoexcitation of this band results in a polarized transient absorption spectrum and transient absorption kinetics characteristic of InSe valence band holes and GaSe conduction band electrons. This result indicates that with small GaSe particles, direct InSe to GaSe electron transfer occurs upon photoexcitation.

  10. Chaos in easter island ecology.

    Science.gov (United States)

    Sprott, J C

    2011-10-01

    This paper demonstrates that a recently proposed dynamical model for the ecology of Easter Island admits periodic and chaotic attractors, not previously reported. Such behavior may more realistically depict the population dynamics of general ecosystems and illustrates the power of simple models to produce the kind of complex behavior that is ubiquitous in such systems.

  11. 1946 Unimak Island, USA Images

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — On April 1, 1946, at 12:29 [local time] a rather strong magnitude 7.4 earthquake occurred with source to the south of Unimak Island, causing one of the most...

  12. Date with the Green Island

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    @@ Qingdao,also spelled Tsingtao,iS one of the most beautiful and clean cities in China and with a population of around 2.5 million(7 million regional)is the largest city after Jinan(the capital)in Shandong Province.The name"Qingdao"means "The Green Island".

  13. Palaeotsunamis in the Pacific Islands

    Science.gov (United States)

    Goff, J.; Chague-Goff, C.; Dominey-Howes, D.; McAdoo, B.; Cronin, S.; Bonte-Grapetin, Michael; Nichol, S.; Horrocks, M.; Cisternas, M.; Lamarche, G.; Pelletier, B.; Jaffe, B.; Dudley, W.

    2011-01-01

    The recent 29 September 2009 South Pacific and 27 February 2010 Chilean events are a graphic reminder that the tsunami hazard and risk for the Pacific Ocean region should not be forgotten. Pacific Islands Countries (PICs) generally have short (Elsevier B.V.

  14. Extinction debt on oceanic islands

    DEFF Research Database (Denmark)

    Triantis, K.A.; Borges, Paulo A. V.; Ladle, R.J.;

    2010-01-01

    the magnitude of such future extinction events has been hampered by potentially inaccurate assumptions about the slope of species-area relationships, which are habitat- and taxon-specific. We overcome this challenge by applying a method that uses the historical sequence of deforestation in the Azorean Islands...

  15. On a Crowded Desert Island.

    Science.gov (United States)

    Rothstein, Samuel

    1989-01-01

    Suggests reference sources most appropriate for a desert island. In addition to "Robinson Crusoe" (Daniel Defoe) and a reference guide to the literature of travel, the list includes basic books on reference work, guides to reference sources, journals, an almanac, encyclopedias, a guide to English usage, and a book of quotations. (14 references)…

  16. Worldwide patterns of bird colouration on islands.

    Science.gov (United States)

    Doutrelant, Claire; Paquet, Matthieu; Renoult, Julien P; Grégoire, Arnaud; Crochet, Pierre-André; Covas, Rita

    2016-05-01

    Island environments share distinctive characteristics that offer unique opportunities to investigate parallel evolution. Previous research has produced evidence of an island syndrome for morphological traits, life-history strategies and ecological niches, but little is known about the response to insularity of other important traits such as animal signals. Here, we tested whether birds' plumage colouration is part of the island syndrome. We analysed with spectrophotometry the colouration of 116 species endemic to islands and their 116 closest mainland relatives. We found a pattern of reduced brightness and colour intensity for both sexes on islands. In addition, we found a decrease in the number of colour patches on islands that, in males, was associated with a decrease in the number of same-family sympatric species. These results demonstrate a worldwide pattern of parallel colour changes on islands and suggest that a relaxation of selection on species recognition may be one of the mechanisms involved.

  17. On the form of species–area relationships in habitat islands and true islands

    DEFF Research Database (Denmark)

    Matthews, Thomas J.; Guilhaumon, François; Triantis, Kostas A.

    2016-01-01

    Aim: We undertook the largest comparative study to date of the form of the island species–area relationship (ISAR) using 207 habitat island datasets and 601 true island datasets. We also undertook analyses of (a) the factors influencing z- and c-values of the power (log–log) model and (b) how z...... and c vary between different island types. Location: Global. Methods: We used an information theoretic approach to compare the fit of 20 ISAR models to 207 habitat island datasets. Model performance was ranked according to pre-set criteria, including metrics of generality and efficiency. We also fitted......, and was the highest ranked model overall. In general, the more complex models performed badly. Average z-values were significantly lower for habitat island datasets than for true islands, and were higher for mountaintop and urban habitat islands than for other habitat island types. Average c-values were significantly...

  18. Inverter Anti-Islanding with Advanced Grid Support in Single- and Multi-Inverter Islands

    Energy Technology Data Exchange (ETDEWEB)

    Hoke, Andy

    2016-08-16

    As PV and other DER systems are connected to the grid at increased penetration levels, island detection may become more challenging for two reasons: 1. In islands containing many DERs, active inverter-based anti-islanding methods may have more difficulty detecting islands because each individual inverter's efforts to detect the island may be interfered with by the other inverters in the island. 2. The increasing numbers of DERs are leading to new requirements that DERs ride through grid disturbances and even actively try to regulate grid voltage and frequency back towards nominal operating conditions. These new grid support requirements may directly or indirectly interfere with anti-islanding controls. This report describes a series of tests designed to examine the impacts of both grid support functions and multi-inverter islands on anti-islanding effectiveness.

  19. Modeling Study for Tangier Island Jetties, Tangier Island, Virginia

    Science.gov (United States)

    2015-03-01

    Although the design waves at the sites of the proposed Tangier Island jet - ties are not depth-limited, increased water depths will allow larger waves to...of the north jetty had significantly erod- ed. At high tide, the point was completely surrounded by water and cut off from the main part of the...environmental challenges. ERDC develops innovative solutions in civil and military engineering, geospatial sciences, water resources, and environmental

  20. Low temperature solution-phase growth of ZnSe and ZnSe/CdSe core/shell nanowires

    Science.gov (United States)

    Petchsang, Nattasamon; Shapoval, Liubov; Vietmeyer, Felix; Yu, Yanghai; Hodak, Jose H.; Tang, I.-Ming; Kosel, Thomas H.; Kuno, Masaru

    2011-08-01

    High quality ZnSe nanowires (NWs) and complementary ZnSe/CdSe core/shell species have been synthesized using a recently developed solution-liquid-solid (SLS) growth technique. In particular, bismuth salts as opposed to pre-synthesized Bi or Au/Bi nanoparticles have been used to grow NWs at low temperatures in solution. Resulting wires are characterized using transmission electron microscopy and possess mean ensemble diameters between 15 and 28 nm with accompanying lengths ranging from 4-10 μm. Subsequent solution-based overcoating chemistry results in ZnSe wires covered with CdSe nanocrystals. By varying the shell's growth time, different thicknesses can be obtained and range from 8 to 21 nm. More interestingly, the mean constituent CdSe nanocrystal diameter can be varied and results in size-dependent shell emission spectra.High quality ZnSe nanowires (NWs) and complementary ZnSe/CdSe core/shell species have been synthesized using a recently developed solution-liquid-solid (SLS) growth technique. In particular, bismuth salts as opposed to pre-synthesized Bi or Au/Bi nanoparticles have been used to grow NWs at low temperatures in solution. Resulting wires are characterized using transmission electron microscopy and possess mean ensemble diameters between 15 and 28 nm with accompanying lengths ranging from 4-10 μm. Subsequent solution-based overcoating chemistry results in ZnSe wires covered with CdSe nanocrystals. By varying the shell's growth time, different thicknesses can be obtained and range from 8 to 21 nm. More interestingly, the mean constituent CdSe nanocrystal diameter can be varied and results in size-dependent shell emission spectra. Electronic supplementary information (ESI) available. See DOI: 10.1039/c1nr10176e

  1. Turnover of Se in adequately fed chickens using Se-75 as a tracer.

    Science.gov (United States)

    Brandt-Kjelsen, A; Govasmark, E; Haug, A; Salbu, B

    2014-06-01

    Inorganic selenium (Se) in the form of selenite is applied to livestock to avoid Se deficiency. Selenite is, however, an artificial Se source in diets of unsupplemented chickens. It is therefore hypothesized that organic Se sources, such as Se-enriched yeast and wheat, could be a more suitable Se supply in animal nutrition, although information on the transition of Se from organic Se sources in fast-growing chickens is scarce. In this work, chickens were fed a low Se diet (0.27 ± 0.01 mg Se/kg, Se-enriched yeast) until 20 days of age, after which the Se concentration was increased to maximum concentration allowed by the poultry industry in Europe (0.5 p.p.m. Se). At the same time, a daily contribution of carrier-free (75)Se tracer from labelled wheat was administered from day 20 to 27. The chickens showed S and Se homeostasis, as the concentration of S and Se in liver, blood or kidney remained about constant, and steady state of S and Se in the other organs was reached 1 day after the diet shift. The uptake of (75)Se was readily seen in all organs. After 1 week, the depuration of the (75)Se tracer was followed, and biological half-lives and retention in individual organs were determined. The shortest biological half-lives were observed in major metabolic organs, the liver, kidney and pancreas with half-lives close to 4 days. There was a significant (p < 0.05) uptake in lung, brain and muscle that reached steady state when the administration of (75)Se was terminated. The half-life of (75)Se in heart was 9 days and 7 days in blood. The longest half-lives were observed in muscle (12 days), brain and lungs (13 days). All half-lives were shorter than in Se deplete animals.

  2. Observation of charge transport through CdSe/ZnS quantum dots in a single-electron transistor structure

    Science.gov (United States)

    Kobo, Masanori; Yamamoto, Makoto; Ishii, Hisao; Noguchi, Yutaka

    2016-10-01

    We fabricated single-electron transistors (SETs) having CdSe/ZnS core-shell-type quantum dots (CdSe/ZnS-QDs) as a Coulomb island using a wet chemistry technique. The CdSe/ZnS-QDs were deposited onto Au electrodes with or without the assistance of a self-assembled monolayer of octane(di)thiols. The CdSe/ZnS-QDs were adsorbed onto the Au electrodes even without the interlayer of thiol molecules depending on the concentration of the CdSe/ZnS-QD solution. The electron-transport characteristics through the CdSe/ZnS-QDs were examined in an SET structure at 13 K. Coulomb blockade behavior with typical gate voltage dependence was clearly observed. The estimated charge addition energies of a CdSe/ZnS-QD ranged from 70 to 280 meV. Moreover, additional structures, including negative differential conductance, appeared in the stability diagram in the source-drain bias region beyond 100 mV; these structures are specific to single-charge transport through the discrete energy levels in the Coulomb island.

  3. The reactivity of [PhP(Se)(mu-Se)]2 and (PhP)3Se2 towards acetylenes and cyanamides: X-ray crystal structures of some P-Se-C and P-Se-C-N heterocycles.

    Science.gov (United States)

    Bhattacharyya, Pravat; Slawin, Alexandra M Z; Woollins, J Derek

    2002-06-17

    Several unusual P-Se-C and P-Se-C-N heterocycles are formed by the reaction of [PhP(Se)(mu-Se)]2 or (PhP)3Se2 with alkynes or cyanamides, generated by the fragmentation of the organophosphorus-selenium compound and addition across the C identical to C or C identical to N triple bond of the organic substrate. X-ray crystallographic analysis reveals an unexpected diversity of structural motifs within these heterocyclic systems, including P2SeCN, P2C2Se and PC2Se2 rings.

  4. Geotechnical investigation and dynamic modelling of the 30 April 2006 debris flows on Ischia Island

    OpenAIRE

    Casagli N.; Nocentini M.; Falorni G.; Farina P; Lombardi L; Righini G.; Tofani V.; Vannocci P.

    2007-01-01

    Ischia is an active volcanic island located in the Tyrrhenian Sea, approximately 30 km WSW from the city of Naples in Southern Italy. On 30 April 2006, following several hours of rainfall, four small soil slips-debris flows were triggered on the slopes of Mt. Vezzi (ca. 400 m a.s.l.), in the SE portion of the island. Notwithstanding their modest size, the flows caused the deaths of 4 people, forced the evacuation of another 250 inhabitants and destroyed several buildings. These...

  5. Instability conditions of the landslides triggered by the 2006 rainfall event in Ischia island, Italy

    OpenAIRE

    Tofani V.; Wang F; Casagli N.; Nocentini M.; Falorni G.; Fukuoka H

    2008-01-01

    Ischia is an active volcanic island located in the Tyrrhenian Sea, approximately 30 km WSW from the city of Naples in Southern Italy. On 30 April 2006, following several hours of rainfall, four small soil slips-debris flows were triggered on the slopes of Mt. Vezzi (ca. 400 m a.s.l.), in the SE portion of the island. The flows caused the deaths of 4 people, forced the evacuation of another 250 inhabitants and destroyed several buildings. The steep slopes of Mt. Vezzi are con...

  6. Introduced mammals on Western Indian Ocean islands

    Directory of Open Access Journals (Sweden)

    James C. Russell

    2016-04-01

    Full Text Available The diversity of introduced mammals and their introduction history varies greatly across the Western Indian Ocean (WIO islands, from ancient introductions in the past millennia on islands off the East coast of Africa where extant terrestrial native mammal communities exist, to very recent invasions in the past decades on islands in the Mascarene archipelago. We compile the distribution of 16 introduced mammal taxa on 28 island groups comprising almost 2000 islands. Through an exhaustive literature review and expert consultation process we recorded all mammal eradications, and species recoveries which could be attributed to introduced mammal eradication or control. All island groups have been invaded by mammals, and invasive cats and rats in particular are ubiquitous, but cultural contingency has also led to regional invasions by other mammals such as lemurs, civets and tenrecs. Mammal eradications have been attempted on 45 islands in the WIO, the majority in the Seychelles and Mauritius, and where successful have resulted in spectacular recovery of species and ecosystems. Invasive mammalian predator eradication or control in association with habitat management has led to improved conservation prospects for at least 24 species, and IUCN red-list down-listing of eight species, in the Mascarene Islands. Future island conservation prioritisation in the region will need to take account of global climate change and predicted sea-level rises and coastal inundation. Greater investment and prioritisation in island conservation in the region is warranted, given its high biodiversity values and the extent of invasions.

  7. Pathogenicity island mobility and gene content.

    Energy Technology Data Exchange (ETDEWEB)

    Williams, Kelly Porter

    2013-10-01

    Key goals towards national biosecurity include methods for analyzing pathogens, predicting their emergence, and developing countermeasures. These goals are served by studying bacterial genes that promote pathogenicity and the pathogenicity islands that mobilize them. Cyberinfrastructure promoting an island database advances this field and enables deeper bioinformatic analysis that may identify novel pathogenicity genes. New automated methods and rich visualizations were developed for identifying pathogenicity islands, based on the principle that islands occur sporadically among closely related strains. The chromosomally-ordered pan-genome organizes all genes from a clade of strains; gaps in this visualization indicate islands, and decorations of the gene matrix facilitate exploration of island gene functions. A %E2%80%9Clearned phyloblocks%E2%80%9D method was developed for automated island identification, that trains on the phylogenetic patterns of islands identified by other methods. Learned phyloblocks better defined termini of previously identified islands in multidrug-resistant Klebsiella pneumoniae ATCC BAA-2146, and found its only antibiotic resistance island.

  8. Island development: Local governance under globalization

    Directory of Open Access Journals (Sweden)

    Huei-Min Tsai

    2014-12-01

    Full Text Available Issues surrounding island development have generated a growing volume of research. What does it mean to develop? How can island communities maintain control over development processes to the benefit of the local economy, rather than seeing economic flows enter and exit the island with little or a primarily negative impact? And how important is local knowledge for edifying local governance and enhancing potentials for innovation in island development? Island histories have repeatedly been forwarded as exemplars and ‘lessons’ for global learning on (unsustainability. To consider these issues, we have selected a number of papers from among the presentations given at the International Geographical Union’s Commission on Islands Conference, Island Development: Local Economy, Culture, Innovation and Sustainability, which took place in the Penghu Archipelago, Taiwan, 1–5 October 2013. These papers serve as examples of how the processes of globalization have penetrated the borders and changed the political and economic structures of islands. They also explore how island-based innovations in science, technology, culture, and formal or informal governance might contribute to sustainable island development.

  9. Lodging Update: Providence, Rhode Island

    Directory of Open Access Journals (Sweden)

    Ragel Roginsky

    2013-04-01

    Full Text Available Each quarter, Pinnacle Advisory Group prepares an analysis of the New England lodging industry, which provides a regional summary and then focuses in depth on a particular market. These reviews look at recent and proposed supply changes, factors affecting demand and growth rates, and the effects of interactions between such supply and demand trends. In this issue, the authors spotlight the lodging market in Providence, Rhode Island.

  10. Morphotectonics of the Mascarene Islands

    Directory of Open Access Journals (Sweden)

    A. E. Scheidegger

    1998-06-01

    Full Text Available A study is made of the orientations (strikes/trends of joints, valleys, ridges and lineaments, i.e. of the (potentially morphotectonic features, of the Mascarene Islands (Reunion, Mauritius and Rodrigues in the Indian Ocean. It turns out that a connection exists between these features on all islands. For the joints alone, the results for Mauritius as a whole agree closely with those for Rodrigues as a whole, and also partially with those of Reunion. Inasmuch as the trends of the valleys, ridges and lineaments are related to the trends (strikes of the joints, a common morphotectonic predesign seems to be present for all features studied. The morphotectonic orientations on the island also agree closely with the trends of fracture zones, ridges and trenches in the nearby ocean bottom; which has had a bearing on the theories of the origin of the Mascarene Islands. Generally, a hot-spot origin is preferred for Reunion, and may be for Mauritius as well, although differing opinions have also been voiced. The dynamics of a hot-spot is hard to reconcile with the close fit of the joint strikes in Réunion with the trends of the Madagascar and Rodrigues fracture zones. The closely agreeing joint maxima in Mauritius and Rodrigues í across the deep Mauritius trench í also agree with the trend of that trench and with the trend of the Rodrigues fracture zone. Thus, it would appear as most likely that the trends of joints and of fracture zones are all part of the same pattern and are due to the same cause: viz. to action of the neotectonic stress field.

  11. Floating Cities, Islands and States

    CERN Document Server

    Bolonkin, Alexander

    2008-01-01

    Many small countries are in need of additional territory. They build landfills and expensive artificial islands. The ocean covers 71 per cent of the Earth surface. Those countries (or persons of wealth) starting the early colonization of the ocean may obtain advantages through additional territory or creating their own independent state. An old idea is building a big ship. The best solution to this problem, however, is the provision of floating cities, islands, and states. The author idea is to use for floating cities, islands, and states a cheap floating platform created from a natural ice field taken from the Arctic or Antarctic oceans. These cheap platforms protected by air-film (bottom and sides) and a conventional insulating cover (top) and having a cooling system can exist for an unlimited time. They can be increased in number or size at any time, float in warm oceans, travel to different continents and countries, serve as artificial airports, harbors and other marine improvements, as well as floating c...

  12. Generalized model of island biodiversity

    Science.gov (United States)

    Kessler, David A.; Shnerb, Nadav M.

    2015-04-01

    The dynamics of a local community of competing species with weak immigration from a static regional pool is studied. Implementing the generalized competitive Lotka-Volterra model with demographic noise, a rich dynamics with four qualitatively distinct phases is unfolded. When the overall interspecies competition is weak, the island species recapitulate the mainland species. For higher values of the competition parameter, the system still admits an equilibrium community, but now some of the mainland species are absent on the island. Further increase in competition leads to an intermittent "disordered" phase, where the dynamics is controlled by invadable combinations of species and the turnover rate is governed by the migration. Finally, the strong competition phase is glasslike, dominated by uninvadable states and noise-induced transitions. Our model contains, as a special case, the celebrated neutral island theories of Wilson-MacArthur and Hubbell. Moreover, we show that slight deviations from perfect neutrality may lead to each of the phases, as the Hubbell point appears to be quadracritical.

  13. Lead levels on traffic-less islands.

    Science.gov (United States)

    Elwood, P C; Blaney, R; Robb, R C; Essex-Cater, A J; Davies, B E; Toothill, C

    1985-09-01

    Surveys were conducted on three traffic-less islands: Tory and Aran, off the coast of Ireland, and Sark, one of the Channel Islands off the coast of France. Identical methods were used in surveys in three other areas, all of which have heavy gasoline driven traffic. These were Jersey, another of the Channel Islands, Ebbw Vale--a mixed industrial area, and Cardiff--the capital city of Wales. Environmental lead levels were very low in two of the traffic-less islands, but on the third, house dust lead levels were comparable with levels found throughout Wales. Blood lead levels on one of the islands were similar to those which have been reported for unaccultured remote tribes, but on the other two traffic-less islands blood lead levels were comparable with those of areas on the mainland of Wales.

  14. Progress report on field studies in the Aleutian Islands, Semidi Islands and Bering Sea, 1983

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes work in the Aleutian Islands, Semidi Islands, and Bering Sea in support of work unit 953.10. Distribution and abundance of birds as seas (work...

  15. Narrative report Mackay Island National Wildlife Refuge and Fisherman Island National Wildlife Refuge: Calendar year 1971

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This narrative report for Mackay Island National Wildlife Refuge and Fisherman Island National Wildlife Refuge summarizes refuge activities for calendar year 1971....

  16. Backscatter 0.5m TIFF Mosaic of St. Croix (Buck Island), US Virgin Islands, 2004

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This image represents a 0.5 meter resolution backscatter mosaic of the north shore of Buck Island, St. Croix, US Virgin Islands. NOAA's NOS/NCCOS/CCMA Biogeography...

  17. Pine Island, Matlacha Pass, Island Bay, and Caloosahatchee National Wildlife Refuges: Comprehensive Conservation Plan

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This Comprehensive Conservation Plan (CCP) was written to guide management on Pine Island, Matlacha Pass, Island Bay, and Caloosahatchee NWRs for the next 15 years....

  18. Energy Transition Initiative, Island Energy Snapshot - British Virgin Islands (Fact Sheet)

    Energy Technology Data Exchange (ETDEWEB)

    2015-03-01

    This profile provides a snapshot of the energy landscape of the British Virgin Islands (BVI), one of three sets of the Virgin Island territories in an archipelago making up the northern portion of the Lesser Antilles.

  19. CRED 20m Gridded bathymetry of Necker Islands, Northwestern Hawaiian Islands, USA (NetCDF format)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Gridded bathymetry of the shelf and slope environments of Necker Island, Northwestern Hawaiian Islands, Hawaii, USA. This netCDF includes multibeam bathymetry from...

  20. Introduced arctic fox eradication at Rat Island, Aleutian Islands, Alaska, summer 1984

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Mechanical means similar to those employed on Amata Island during the summer of 1983 were used to attempt eradication of fox on Rat Island. These labor intensive...

  1. Proposing New Wilderness Areas: Okefenokee, Pelican Islands, Island Bay, Cedar Keys, Passage Key, and Wichita Mountains

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — President Transmittal on the proposal of wilderness additions that include Okefenokee, Pelican Islands, Island Bay, Cedar Keys, Passage Key, and Wichita Mountains.

  2. Islandness or Smallness? A Comparative Look at Political Institutions in Small Island States

    Directory of Open Access Journals (Sweden)

    Dag Anckar

    2006-05-01

    Full Text Available In order to explicate the relevance of the island dimension for political categories, for each of seven political institutions, a series of four comparisons are conducted on a global basis. The first is between small island states and all other states, the second is between small island states and larger island states, the third is between small island states and small mainland states, and the fourth is between island states and mainland states, regardless of size. The finding is that islandness links in many instances to the choice of institutional settings. Political scientists are therefore well-advised to include in their analyses islandness among the factors that shape institutional choices.

  3. Cs3Sm7Se12

    Directory of Open Access Journals (Sweden)

    Christof Schneck

    2012-01-01

    Full Text Available The title compound, tricaesium heptasamarium(III dodecaselenide, is setting a new starting point for realization of the channel structure of the Cs3M7Se12 series, now with M = Sm, Gd–Er. This Cs3Y7Se12-type arrangement is structurally based on the Z-type sesquiselenides M2Se3 adopting the Sc2S3 structure. Thus, the structural set-up of Cs3Sm7Se12 consists of edge- and vertex-connected [SmSe6]9− octahedra [dØ(Sm3+ – Se2− = 2.931 Å], forming a rock-salt-related network [Sm7Se12]3− with channels along [001] that are apt to take up monovalent cations (here Cs+ with coordination numbers of 7 + 1 for one and of 6 for the second cation. The latter cation has a trigonal–prismatic coordination and shows half-occupancy, resulting in an impossible short distance [2.394 (4 Å] between symmetrically coupled Cs+ cations of the same kind. While one Sm atom occupies Wyckoff position 2b with site symmetry ..2/m, all other 11 crystallographically different atoms (namely 2 × Cs, 3 × Sm and 6 × Se are located at Wyckoff positions 4g with site symmetry ..m.

  4. Cs(3)Sm(7)Se(12).

    Science.gov (United States)

    Schneck, Christof; Elbe, Andreas; Schurz, Christian M; Schleid, Thomas

    2012-01-01

    The title compound, tricaesium hepta-samarium(III) dodeca-selenide, is setting a new starting point for realization of the channel structure of the Cs(3)M(7)Se(12) series, now with M = Sm, Gd-Er. This Cs(3)Y(7)Se(12)-type arrangement is structurally based on the Z-type sesquiselenides M(2)Se(3) adopting the Sc(2)S(3) structure. Thus, the structural set-up of Cs(3)Sm(7)Se(12) consists of edge- and vertex-connected [SmSe(6)](9-) octa-hedra [d(Ø)(Sm(3+) - Se(2-)) = 2.931 Å], forming a rock-salt-related network [Sm(7)Se(12)](3-) with channels along [001] that are apt to take up monovalent cations (here Cs(+)) with coordination numbers of 7 + 1 for one and of 6 for the second cation. The latter cation has a trigonal-prismatic coordination and shows half-occupancy, resulting in an impossible short distance [2.394 (4) Å] between symmetrically coupled Cs(+) cations of the same kind. While one Sm atom occupies Wyckoff position 2b with site symmetry ..2/m, all other 11 crystallographically different atoms (namely 2 × Cs, 3 × Sm and 6 × Se) are located at Wyckoff positions 4g with site symmetry ..m.

  5. Diversity and distribution of tardigrades (Bilateria, Tardigrada from the Iberian Peninsula, Balearic Islands and Chafarinas Islands

    Directory of Open Access Journals (Sweden)

    Guil, Noemí

    2002-12-01

    Full Text Available Bibliographical information on the Tardigrada from Iberian Peninsula, Balearic Islands and Chafarinas Islands is compiled herein. 118 species are listed from the studied area. The first records of six Tardigrada species, Dactylobiotus parthenogeneticus, Dactylobiotus selenicus, Murrayon dianeae, Diphascon (Diphascon nodulosum (first time in Europe, Diphascon (Diphascon pingue and Isohypsibius marcellinoi that had not previously been found in the area are included. Bibliography data are analysed. After the analysis, it is concluded that more intensive, extensive and within more diverse habitats sampling effort should significantly increase the knowledge of tardigrade diversity in the studied area.

    En este artículo hemos recopilado la información existente en la bibliografía acerca del phylum Tardigrada en la Península Ibérica, Islas Baleares e Islas Chafarinas. La lista de especies del phylum Tardigrada incluye 118 especies en el área de estudio. Además, incluimos seis especies encontradas por primera vez en el área de estudio: Dactylobiotus parthenogeneticus, Dactylobiotus selenicus, Murrayon dianeae, Diphascon (Diphascon nodulosum (por primera vez encontrado en Europa, Diphascon (Diphascon pingue e Isohypsibius marcellinoi. En base al análisis realizado con los datos recopilados de la bibliografía, podemos concluir que un pequeño aumento en el esfuerzo de muestreo (intensivo, extensivo y aumentando la diversidad de hábitats recolectados se traduce en un aumento significativo de la diversidad del phylum en el área estudiada.

  6. Cs2UPd3Se6

    Directory of Open Access Journals (Sweden)

    George N. Oh

    2011-02-01

    Full Text Available Dicaesium uranium(IV tripalladium(II hexaselenide, Cs2UPd3Se6, crystallizes in the space group Fmmm in the Ba2NaCu3O6 structure type. The asymmetric unit comprises the following atoms with site symmetries as shown: U1 (mm2, Cs1 (222, Cs2 (m2m, Pd1 (.m., Pd2 (2mm, Se1 (m.., and Se2 (1. This layered structure contains six edge-sharing square-planar [PdSe4] units that form a hexagon. These, in turn, edge-share with [USe6] trigonal–prismatic units, forming an extended layer parallel to (010. The layers are stacked along [010]. They are staggered, and are separated by the Cs atoms. The Cs atoms are either coordinated in a square antiprism of Se atoms or are ten-coordinate, with one square face and the opposite face hexagonal.

  7. Thermodynamic properties of SeS

    Energy Technology Data Exchange (ETDEWEB)

    Huang, M.D.

    1977-12-01

    Mass-spectrometry and Knudsen effusion experiments were used to study the equilibrium partial pressure of SeS formed by reaction of S/sub 2/ and Se/sub 2/ which were produced by thermally decomposing a mixture of In/sub 2/S/sub 3/ and In/sub 2/Se/sub 3/ in a Knudsen effusion cell. The heat of formation of SeS(g) was determined by the second law method to be -0.6 +- 3 kcal/mole. The entropy of formation of SeS(g) was calculated from spectrographic data in Ahmed and Barrow to be 1.5 cal/degree-mole at 298/sup 0/K.

  8. Preparation of CdSe/ZnSe Core-shell Nanocrystal in One-step Reaction

    Institute of Scientific and Technical Information of China (English)

    FEI Xiao-fang; SHAN Gui-ye; KONG Xiang-gui; WANG Xin; ZENG Qing-hui; ZHANG You-lin

    2005-01-01

    High-quality Zn-doped CdSe core-shell nanocrystals were successfully prepared by incorporating a stoichiometric amount of Zn precursor into the CdSe reaction system, in which the Se precursor was excess and an Se-rich surface was formed. By injecting different amounts of Zn precursor, the core-shell nanocrystals demonstrated by the emission spectra were formed. The obtained Zn-doped CdSe nanocrystals exhibit a photoluminescence efficiency from 30% to 85%, which is comparable to those for the reported CdSe/ZnS, CdSe/CdS in the literature. In particular, a shell ZnSe layer with different thicknesses of ZnSe can be formed in this experiment by only changing the amount of Zn precursor added, which is simple and effective.

  9. Dendrochronology of strain-relaxed islands.

    Science.gov (United States)

    Merdzhanova, T; Kiravittaya, S; Rastelli, A; Stoffel, M; Denker, U; Schmidt, O G

    2006-06-01

    We report on the observation and study of tree-ring structures below dislocated SiGe islands (superdomes) grown on Si(001) substrates. Analogous to the study of tree rings (dendrochronology), these footprints enable us to gain unambiguous information on the growth and evolution of superdomes and their neighboring islands. The temperature dependence of the critical volume for dislocation introduction is measured and related to the composition of the islands. We show clearly that island coalescence is the dominant pathway towards dislocation nucleation at low temperatures, while at higher temperatures anomalous coarsening is effective and leads to the formation of a depletion region around superdomes.

  10. WATER TEMPERATURE and DEPTH - SENSOR collected from NOAA Ship OSCAR ELTON SETTE in main Hawaiian Islands and Hawaii EEZ from 2009-02-06 to 2009-02-25 (NCEI Accession 0155922)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — XBT data were collected during a Pacific Islands Fisheries Science Center's Cetacean Research Program's shipboard cetacean survey (Cruise ID SE 09-01). XBT casts...

  11. WATER TEMPERATURE and DEPTH - SENSOR collected from NOAA Ship OSCAR ELTON SETTE in Hawaii EEZ, main Hawaiian Islands, and Papahanaumokuakea Marine National Monument from 2010-09-02 to 2010-10-26 (NCEI Accession 0155914)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — XBT data were collected during a Pacific Islands Fisheries Science Center's Cetacean Research Program's shipboard cetacean survey (Cruise ID: SE 10-08). XBT casts...

  12. WATER TEMPERATURE and DEPTH - SENSOR collected from NOAA Ship OSCAR ELTON SETTE in main Hawaiian Islands from 2008-07-11 to 2008-07-29 (NCEI Accession 0155892)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — XBT data were collected during a Pacific Islands Fisheries Science Center's Cetacean Research Program's shipboard cetacean survey (Cruise ID SE 08-06). XBT casts...

  13. 77 FR 71531 - Special Local Regulation; Kelley's Island Swim, Lake Erie; Kelley's Island, Lakeside, OH

    Science.gov (United States)

    2012-12-03

    ... Regulation; Kelley's Island Swim, Lake Erie; Kelley's Island, Lakeside, OH in the Federal Register (77 FR... Homeland Security FR Federal Register NPRM Notice of Proposed Rulemaking TFR Temporary Final Rule A... SECURITY Coast Guard 33 CFR Part 100 RIN 1625-AA08 Special Local Regulation; Kelley's Island Swim,...

  14. Imagery and Imaginary of Islander Identity: Older People and Migration in Irish Small-Island Communities

    Science.gov (United States)

    Burholt, Vanessa; Scharf, Thomas; Walsh, Kieran

    2013-01-01

    This article examines the imagery and imaginaries of islander identity and makes an original contribution to the fields of gerontology and nissology. Drawing on data collected through in-depth interviews with 19 older residents of two small-island communities located off the island of Ireland, we address the central roles played by older people in…

  15. Solid waste management on small islands: the case of Green Island, Taiwan

    NARCIS (Netherlands)

    Chen, M.C.; Ruijs, A.J.W.; Wesseler, J.H.H.

    2005-01-01

    Municipalities of small islands have limited capacities for waste disposal. In the case of Green Island, Taiwan, continuing with business as usual would only allow the disposal of waste on the island for another 8 years. Three alternatives for solid waste management (SWM) are compared. The cost-effe

  16. Assessing vulnerability to climate change and socioeconomic stressors in the Reef Islands group, Solomon Islands

    DEFF Research Database (Denmark)

    Birk, Thomas

    2014-01-01

    This article assesses the vulnerability to climatic and socioeconomic stresses in the Reef Islands, Solomon Islands, an atoll island group in the Southwest Pacific. Climate change and the associated sea-level rise are often seen as the most pressing challenges to atoll communities, yet this study...

  17. Some data on the avifauna of the Island of Roti, Lesser Sunda Islands, Indonesia

    NARCIS (Netherlands)

    Verheijen, J.A.J.

    1976-01-01

    INTRODUCTION For several years I had been looking for an opportunity to visit the island of Roti (Rotti, Roté, Loté). Junge (1954) mentions that only once an ornithological collection was made in the island, namely by Dr. H. F. C. ten Kate, an ethnologist who visited the island in 1891. Büttikofer (

  18. One-step synthesis of PbSe-ZnSe composite thin film

    OpenAIRE

    2011-01-01

    Abstract This study investigates the preparation of PbSe-ZnSe composite thin films by simultaneous hot-wall deposition (HWD) from multiple resources. The XRD result reveals that the solubility limit of Pb in ZnSe is quite narrow, less than 1 mol%, with obvious phase-separation in the composite thin films. A nanoscale elemental mapping of the film containing 5 mol% PbSe indicates that isolated PbSe nanocrystals are dispersed in the ZnSe matrix. The optical absorption edge of the composite thin...

  19. A transferable force field for CdS-CdSe-PbS-PbSe solid systems

    OpenAIRE

    Fan, Zhaochuan; Koster, Rik S.; Wang, Shuaiwei; Fang, Changming; Anil O. Yalcin; Frans D. Tichelaar; Zandbergen, Henny W.; Van Huis, Marijn A.; Vlugt, Thijs J H

    2014-01-01

    A transferable force field for the PbSe-CdSe solid system using the partially charged rigid ion model has been successfully developed and was used to study the cation exchange in PbSe-CdSe heteronanocrystals [A. O. Yalcin et al., "Atomic resolution monitoring of cation exchange in CdSe-PbSe heteronanocrystals during epitaxial solid-solid-vapor growth," Nano Lett. 14, 3661-3667 (2014)]. In this work, we extend this force field by including another two important binary semiconductors, PbS and C...

  20. Management Effectiveness of Southeast Aru Islands Marine Conservation Area

    Directory of Open Access Journals (Sweden)

    Fernando Dayandri Willem Dangeubun

    2013-08-01

    Full Text Available Southeast Aru Islands Marine Conservation Area (SE Aru MCA has been existed for nearly 21 years, a period that long enough for a timely evaluation about how far improvement of management has been made in the area in question, i.e. whether management has improved situation of local communities and marine resources availability in the area. This study, therefore, aims at assessing management effectiveness and impacts of SE Aru MCA. Results suggest that the MCA, which was originally established as a marine nature reserve (Cagar Alam Laut, CAL in 1991 and changed status into marine sanctuary in 2009, has not yet produced the expected positive impacts. Assessment using available tools indicated that the management level of SE Aru MCA is at level 1, with percentage of 34.12%, meaning it is still at initiation stage and less effective in terms of management outcomes. Index of conservation area effectiveness with a value of 0.387 shows that the overall conservation area in the 3 categories mentioned above is less effective, therefore conservation effect has not been able to solve area problems. It is concluded that, after more than 20 years exists in the area, few benefits have been produced by SE Aru MCA for local people associated with it and biological resources in it.Keywords: marine sanctuary, conservation, effectiveness, impactDOI: 10.7226/jtfm.19.2.119

  1. Vegetation of eastern Unalaska Island, Aleutian Islands, Alaska

    Science.gov (United States)

    Talbot, Stephen S.; Schofield, Wilfred B.; Talbot, Sandra L.; Daniëls, Fred J. A.

    2010-01-01

    Plant communities of Unalaska Island in the eastern Aleutian Islands of western Alaska, and their relationship to environmental variables, were studied using a combined Braun-Blanquet and multivariate approach. Seventy relevés represented the range of structural and compositional variation in the matrix of vegetation and landform zonation. Eleven major community types were distinguished within six physiognomic–ecological groups: I. Dry coastal meadows: Honckenya peploides beach meadow, Leymus mollis dune meadow. II. Mesic meadows: Athyrium filix-femina – Aconitum maximum meadow, Athyrium filix-femina – Calamagrostis nutkaensis meadow, Erigeron peregrinus – Thelypteris quelpaertensis meadow. III. Wet snowbed meadow: Carex nigricans snowbed meadow. IV. Heath: Linnaea borealis – Empetrum nigrum heath, Phyllodoce aleutica heath, Vaccinium uliginosum – Thamnolia vermicularis fellfield. V. Mire: Carex pluriflora – Plantago macrocarpa mire. VI. Deciduous shrub thicket: Salix barclayi – Athyrium filix-femina thicket. These were interpreted as a complex gradient primarily influenced by soil moisture, elevation, and pH. Phytogeographical and syntaxonomical analysis of the plant communities indicated that the dry coastal meadows, most of the heaths, and the mire vegetation belonged, respectively, to the widespread classes Honckenyo–Elymetea, Loiseleurio–Vaccinietea, and Scheuchzerio–Caricetea, characterized by their circumpolar and widespread species. Amphi-Beringian species were likely diagnostic of amphi-Beringian syntaxa, many of these yet to be described.

  2. In or On? Island Words, Island Worlds: II

    Directory of Open Access Journals (Sweden)

    Ronstrom Owe

    2011-11-01

    Full Text Available The first part of the paper examines uses and meanings of the orientational metaphors ‘in’, ‘on’, ‘out’ and ‘off’. In the discussed languages in North Western Europe there are general principles of metaphoric entailment and underlying image schemas that guide the choice of positional metaphor: islands you are normally ‘on’, and mainlands ‘in’. The second part of the paper examines cases where this use is debated or contested. The author finds that these contestations seem to be fuelled by the different relations between subject and object that positional metaphors entail. Expressions with ‘in’ highlight belonging and collective identity, enlarge objects by conceptualizing them as encompassing containers, and reduce subjects to a part of the object. Expressions with ‘on’ highlight individuality and agency, reduce the object, and enlarge the subject by placing it above the object. Such differing entailments of positional metaphors may influence how islands are positioned and understood.

  3. Al/CdSe/GaSe/C resonant tunneling thin film transistors

    Science.gov (United States)

    Qasrawi, A. F.; Kayed, T. S.; Elsayed, Khaled A.

    2017-02-01

    An Al/CdSe/GaSe/C thin film transistor device was prepared by the physical vapor deposition technique at a vacuum pressure of 10-5 mbar. The x-ray diffraction measurements demonstrated the polycrystalline nature of the surface of the device. The dc current-voltage characteristics recorded for the Al/CdSe/C and Al/CdSe/GaSe/C channels displayed a resonant tunneling diode features during the forward and reverse voltage biasing, respectively. In addition, the switching current ratio of the Al/CdSe/C increased from 18.6 to 9.62×103 as a result of the GaSe deposition on the CdSe surface. Moreover, the alternating electrical signal analyses in the frequency range of 1.0 MHz to 1.8 GHz, showed some remarkable properties of negative resistance and negative capacitance spectra of the Al/CdSe/GaSe/C thin film transistors. Two distinct resonance-antiresonance phenomena in the resistance spectra and one in the capacitance spectra were observed at 0.53, 1.04 and 1.40 GHz for the Al/CdSe/C channel, respectively. The respective resonating peak positions of the resistance spectra shift to 0.38 and 0.95 GHz when GaSe is interfaced with CdSe. These features of the thin film transistors are promising for use in high quality microwave filtering circuits and also for use as ultrafast switches.

  4. Energy Transition Initiative, Island Energy Snapshot - Grenada (Fact Sheet)

    Energy Technology Data Exchange (ETDEWEB)

    2015-03-01

    This profile provides a snapshot of the energy landscape of Grenada - a small island nation consisting of the island of Grenada and six smaller islands in the southeastern Caribbean Sea - three of which are inhabited: Grenada, Carriacou, and Petite Martinique.

  5. St. Vincent Island White-Tailed Deer Monitoring Program

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The white tailed deer herd on St. Vincent Island represents an important part of the island's biotic community. To maintain the integrity of the island's deer...

  6. Reindeer and seabird survey of Hagemeister Island, Alaska

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report describes the survey effort on Hagemeister Island in the Alaska Maritime NWR. Hagemeister Island is the second largest Bering Sea Island. Reindeer, red...

  7. A genetic comparison of West Greenland and Baffin Island (Canada walruses: Management implications

    Directory of Open Access Journals (Sweden)

    Liselotte Wesley Andersen

    2014-12-01

    Full Text Available Until recently Atlantic walruses (Odobenus rosmarus rosmarus have been subject to relatively intense exploitation in West Greenland. Animals in this stock have also been hunted in Nunavut/Canada. However, the demographic identity of these animals and their connection with walruses in neighbouring areas is poorly resolved, hampering the determination of sustainable harvest levels. It has been suggested that walruses in West Greenland are genetically linked with walruses at SE Baffin Island (Canada where they are also hunted for subsistence purposes. To determine the relationship(s between walruses in these areas we conducted a genetic analysis including recent samples from West Greenland, Southeast Baffin Island in western Davis Strait, Hudson Strait in Canada and Northwest Greenland in northern Baffin Bay. Seventeen microsatellite markers were applied to all samples. Walruses in West Greenland and at Southeast Baffin Island did not differ from each other and therefore may be regarded as belonging to the same stock. However, walruses in these two areas differed genetically from both Northwest Greenland and Hudson Strait walruses. These findings support (1 that there are subunits within the range of walruses in the Hudson Strait-Davis Strait-Baffin Bay region and (2 that walruses along E Baffin Island and W Greenland constitute a common population that receive some influx from Hudson Strait. Thus, sustainable catch levels in Southeast Baffin Island (Nunavut and in West Greenland must be set in light of the finding that they belong to the same stock, which is exploited in these two areas. This requires Canadian-Greenlandic co-management of the W Greenland-SE Baffin Island walrus stock.

  8. Injection of majority carriers through InSe-GaSe heterojunctions

    Energy Technology Data Exchange (ETDEWEB)

    Bakumenko, V.L.; Tagaev, V.G.

    1982-10-01

    Injection of majority carriers through heterojunction under intensive illumination conditions is discussed. Experimental results of injection of majority carriers through InSe-GaSe heterojunctions have been presented.

  9. Lattice dynamics of a simple GaSe-InSe superlattice

    Science.gov (United States)

    Schwarcz, R.; Kanehisa, M. A.

    1994-11-01

    A simple linear chain model is used to calculate the phonon dispersion curves for a superlattice composed of one layer of GaSe and one layer of InSe alternatively stacked along the c-axis. The resultant acoustic modes are essentially averages of the two constituents. Most optical modes are found to be confined in either GaSe layers of InSe layers. However, some low energy-optical modes have contributions from the two constituents.

  10. Structural and electronic properties of ultrathin FeSe films grown on Bi2Se3(0 0 0 1) studied by STM/STS

    Science.gov (United States)

    Singh, Udai Raj; Warmuth, Jonas; Markmann, Verena; Wiebe, Jens; Wiesendanger, Roland

    2017-01-01

    We report scanning tunnelling microscopy and spectroscopy (STM/STS) studies on one and two unit cell (UC) high FeSe thin films grown on Bi2Se3(0 0 0 1). In our thin films, we find the tetragonal phase of FeSe and dumb-bell shaped defects oriented along Se-Se bond directions. In addition, we observe striped moiré patterns with a periodicity of (7.3  ±  0.1) nm generated by the mismatch between the FeSe lattice and the Bi2Se3 lattice. We could not find any signature of a superconducting gap in the tunneling spectra measured on the surface of one and two UC thick islands of FeSe down to 6.5 K. The spectra rather show an asymmetric behavior across and a finite density of states at the Fermi level (E F) resembling those taken in the normal state of bulk FeSe.

  11. Structural and optical properties of ZnSe thin films stacked with PbSe submonolayers

    Science.gov (United States)

    Manonmani Parvathi, M.; Arivazhagan, V.; Rajesh, S.

    2014-09-01

    Structural and optical properties of Zinc Selenide (ZnSe) thin films stacked with multiple Lead Selenide (PbSe) submonolayers (ML) were studied. Thermal evaporation was preferred to produce ZnSe-PbSe thin films with the PbSe ML thickness ranges from 2.5 to 10 nm. Polycrystalline nature of the ZnSe was revealed through high resolution X-ray diffractometer measurement. The development of micro strain at the interfaces with increasing PbSe ML thickness was observed. A cross-sectional TEM image shows well-ordered periodicity and reproducibility of the layer thickness. The enhancement of optical absorption of ZnSe was identified upon stacking of PbSe ML. The evidence for quantum confinement in PbSe ML was revealed by the obtained red shift in band gap (2.5-1.8 eV) values as well as photoluminescence emission at 1,071 nm. The presence of tensile strain in the ZnSe layers upon staking of PbSe ML was discussed by the shift in LO phonon modes in Raman spectra.

  12. Solving the shape conundrum in $^{70}$Se

    CERN Multimedia

    We propose a multi-step Coulomb-excitation study of $^{70}$Se at HIE-ISOLDE using the $^{208}$Pb( $^{70}$Se, $^{70}$Se*)$^{208}$Pb* reaction at a safe energy of 5.0 MeV/u. We aim at a precise measurement of the $\\left \\langle 2^{+}_{1} \\hspace{0.1cm} || \\hspace{0.1cm}\\hat{E}2 \\hspace{0.1cm} || \\hspace{0.1cm}2^{+}_{ 1} \\right \\rangle$ diagonal matrix element as well as gaining information on additional matrix elements. Such information will shed light onto the shape conundrum of the 2$^{+}_{1}$ state in $^{70}$Se as well as foreseeing the opportunity for a more detailed understanding of the shape-coexistence phenomenon in this region.

  13. The system SnSe-Bi

    Energy Technology Data Exchange (ETDEWEB)

    Alidzhanov, M.A.; Alizade, M.Z.; Aslanov, G.A.; Gurshumov, A.P.; Persakhova, A.Y.

    1986-10-01

    The authors study the system SnSe-Bi on annealed samples by methods of physicochemical analysis; x-ray phase, differential-thermal analysis, microstructural analysis, and measurements of the microhardness. It was established that the eutectic contains five mole % SnSe and melts at 260 C. A bounded region of the SnSe-based solid solutions exist, and the solubility of SnSe in bismuth was not observed. Anomalies in the temperature dependences of the thermo-emf and electrical conductivity of the solid solutions were determined by the phase transformations of tin monoselenide. The nature of the changes in the thermo-emf and the electrical conductivity as a function of the temperature is associated with the changes in the density and effective mass of the charge carriers.

  14. Climate change and size evolution in an island rodent species: new perspectives on the island rule.

    Science.gov (United States)

    Millien, Virginie; Damuth, John

    2004-06-01

    As stated by the island rule, small mammals evolve toward gigantism on islands. In addition they are known to evolve faster than their mainland counterparts. Body size in island mammals may also be influenced by geographical climatic gradients or climatic change through time. We tested the relative effects of climate change and isolation on the size of the Japanese rodent Apodemus speciosus and calculated evolutionary rates of body size change since the last glacial maximum (LGM). Currently A. speciosus populations conform both to Bergmann's rule, with an increase in body size with latitude, and to the island rule, with larger body sizes on small islands. We also found that fossil representatives of A. speciosus are larger than their extant relatives. Our estimated evolutionary rates since the LGM show that body size evolution on the smaller islands has been less than half as rapid as on Honshu, the mainland-type large island of Japan. We conclude that island populations exhibit larger body sizes today not because they have evolved toward gigantism, but because their evolution toward a smaller size, due to climate warming since the LGM, has been decelerated by the island effect. These combined results suggest that evolution in Quaternary island small mammals may not have been as fast as expected by the island effect because of the counteracting effect of climate change during this period.

  15. Karst aquifers on small islands--the island of Olib, Croatia.

    Science.gov (United States)

    Vlahović, Tatjana; Munda, Boris

    2012-10-01

    Water supply is a major problem in the Adriatic islands, especially during the summer tourism season, and represents a limiting factor to the islands' further economic development. Much attention has been given to water supply solutions, primarily in terms of attempting to use the existing island water. Unfortunately, few islands have favourable hydrological conditions to accumulate significant quantities of surface water or groundwater. In the period from 2001 to 2004, investigations were conducted on many islands to define their own freshwater or partially brackish water resources since desalinisation technology could resolve a significant part of the water supply demand on small and distant islands. Due to the specificity and complexity of research in karst areas, the study was conducted in phases and included the geological and hydrogeological reconnaissance of the island, aimed at locating possible areas on the island where the necessary quantities of groundwater of adequate quality could be captured; a detailed hydrogeological mapping of the specified areas, geophysical investigation and test drilling; and, over several days, test pumping of the most promising borehole. One of the islands investigated was the island of Olib. The conducted surveys indicated that it is possible to pump about 3.5 L/s of groundwater from the karst aquifer of the island of Olib, which fully complies with the sanitary quality of drinking water.

  16. Kaskaskia Island Drainage and Levee District, Illinois.

    Science.gov (United States)

    1977-07-01

    Kaskaskia Island because of its association with man. It produces a painful bite which is very slow to heal. The black widow spider, Latrodectus ... mactans (Fabricius) also prefers upland forest situations, but may be a possible inhabitant of the island. Two ticks, Dermacentor variabilis (Say), the

  17. Professional Development for Rhode Island School Administrators.

    Science.gov (United States)

    Turley, James; Brittingham, Barbara E.

    This report presents the results of a survey of Rhode Island school administrators (n=523) and open-ended interviews of administrators (n=28) that would provide information for the design of leadership and staff development activities as part of Rhode Island's LEAD project--an attempt to improve the leadership capacity of school administrators.…

  18. Distribution of Grimmia Hedw. on Mediterranean islands

    NARCIS (Netherlands)

    Greven, H.C.

    1995-01-01

    On the six largest Mediterranean islands: Corsica, Crete, Cyprus, Mallorca, Sardinia and Sicily, the moss genus Grimmia (Grimmiaceae, Musci) is represented by 29 species. Many of these are newly recorded. The importance of the islands for bryophyte conservation is stressed. -Author

  19. Governance of ecosystem services on small islands

    NARCIS (Netherlands)

    Polman, Nico; Reinhard, Stijn; Bets, van L.K.J.; Kuhlman, Tom

    2016-01-01

    Natural ecosystems provide an attractive focus for tourism on small islands. However, at the same time tourism and other human actions can be detrimental to these ecosystems especially because governance of the ecosystem may be difficult due to the limited resilience of small island ecosystems. I

  20. The Pacific Island Health Care Project

    Directory of Open Access Journals (Sweden)

    Donald Ames Person

    2014-10-01

    Full Text Available Introduction/BackgroundUS Associated/Affiliated Pacific Islands (USAPI include 3 Freely Associated States: Marshall Islands, Federated States of Micronesia, Palau and 3 Territories: American Samoa, Guam, and Commonwealth of the Northern Mariana Islands. ObjectiveThe Pacific Island Health Care Project (PIHCP provides humanitarian medical referral/consultation/care to >500,000 indigenous people of these remote islands. Methods In the mid-1990s, we developed a simple store-and-forward program to link the USAPI with Tripler Army Medical Center (TAMC. This application allowed image attachment to email consultations. ResultsMore than 8000 Pacific Islanders have benefited from the program. 3000 Pacific Islanders prior to telemedicine (1990-1997 and since store-and-forward telemedicine (1997-present, the PIHCP has helped an additional 5000. Records post dynamically and are stored in an archival database. Conclusion The PIHCP is the longest running telemedicine program in the world delivering humanitarian medical care. It has bridged the Developing World of the remote Pacific islands with advanced medical and surgical care available at a major US military teaching hospital.(The opinions expressed here are those of the author and not that of the Army, Department of Defense, or the US Government.

  1. Storm impacts on small barrier islands

    DEFF Research Database (Denmark)

    Kroon, Aart; Fruergaard, Mikkel

    The shorelines of the Baltic Sea and the inner coastal waters in Denmark consist of many barrier islands. These sandy barrier islands were mainly formed in the Holocene and are still very dynamic. The present day changes in the morphology are dominantly governed by storm waves and associated high...

  2. Rhode Island School Terrorist Attack Preparedness

    Science.gov (United States)

    Dube, Michael W. M.

    2012-01-01

    This study examined the state of safety and terrorist attack preparedness in Rhode Island Schools as determined by Rhode Island school leader perceptions. The study is descriptive in nature as it gathers data to describe a particular event or situation. Using a researcher generated survey based on terrorist preparedness guidelines and suggestions…

  3. Marine investigations in the Lakshadweep Islands, India

    Digital Repository Service at National Institute of Oceanography (India)

    Tripati, S.

    The Lakshadweep Islands lie on the sea route between West Asia and Africa on the one hand and South Asia and the Far East on the other. In maritime history, these islands have played a vital role by providing shelter, fresh water and landmarks...

  4. The Island Smart Energy System and Market

    DEFF Research Database (Denmark)

    Ma, Zheng; Billanes, Joy Dalmacio; Jørgensen, Bo Nørregaard

    2016-01-01

    and influential factors impact on the development of the singleisland or multi-island smart energy system are different. This paper presents the influential factors of the island smart energy system development by the literature analysis. Meanwhile, taking Philippines as a case study to investigate...

  5. The avifauna of Flores (Lesser Sunda Islands)

    NARCIS (Netherlands)

    Mees, G.F.

    2006-01-01

    The avifauna of the island of Flores (Lesser Sunda Islands) is reviewed. Introductory sections, which include a chapter on the history of ornithological discovery, are followed by the main part, a systematic account in which each species and subspecies known from Flores is treated separately. A disc

  6. The water landscapes of the Canary Islands

    DEFF Research Database (Denmark)

    Lee, Gini; Braae, Ellen Marie; Diedrich, Lisa

    2013-01-01

    Island environments, particularly small archipelagos such as the Canary Islands, are more visible subject to the vagaries of change wrought by ecological and climate dynamics, shifting social conditions and economic impacts subject to global markets, than is witnessed on continental worlds....

  7. Champion Island, Galapagos Stable Oxygen Calibration Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Galapagos Coral Stable Oxygen Calibration Data. Sites: Bartolome Island: 0 deg, 17 min S, 90 deg 33 min W. Champion Island: 1 deg, 15 min S, 90 deg, 05 min W. Urvina...

  8. Double electron capture searches in $^{74}$Se

    CERN Document Server

    Lehnert, B; Degering, D; Sommer, D; Wagner, L; Zuber, K

    2016-01-01

    A search for various double electron capture modes of $^{74}$Se has been performed using an ultralow background Ge-detector in the Felsenkeller laboratory, Germany. Especially for the potentially resonant transition into the 1204.2 keV excited state of $^{74}$Ge a lower half-life limit of $0.70\\cdot 10^{19}$ yr (90% credibility) has been obtained. Serious concerns are raised about the validity of obtained $^{74}$Se limits in some recent publications.

  9. Adsorption behavior and current-voltage characteristics of CdSe nanocrystals on hydrogen-passivated silicon

    OpenAIRE

    2002-01-01

    Using scanning tunneling microscopy and spectroscopy we have studied both the geometric distribution and the conduction properties of organic shell capped CdSe nanocrystals adsorbed on hydrogen-passivated Si(100). At submonolayer concentrations, the nanocrystal distribution on the surface was found to be highly nonhomogeneous, with an aggregation of most of the nanocrystals into islands of monolayer thickness. I-V spectra collected on nanocrystals adsorbed on n- and p-type substrates showed a...

  10. A NUMERICAL STUDY OF THE EFFECT OF TAIWAN ISLAND TERRAIN ON TYPHOON HAITANG (0505) TRACK

    Institute of Scientific and Technical Information of China (English)

    YU Zhen-shou; HOU Qiu-feng; WANG Hai-dong; WU Xian-du; LI Huai-chun

    2008-01-01

    The track of Typhoon Haitang (0505), which passed through the Taiwan Island and landed again,has been successfully simulated by using the non-hydrostatic mesoscale atmospheric model MM5. Itsstructure is analyzed on the landing stage, and it is found that there exist good relationships between thetyphoon abnormal moving track and its asymmetry structure. The effect of terrain of Taiwan Island on thetyphoon Haitang, which made it rotate before landing and present a "V" type abnormal moving track inTaiwan straits, has also been simulated. Further analysis shows that the terrain of Taiwan Island not onlydirectly affects the typhoon moving track, but also changes the typhoon track by affecting its asymmetricstructure. Therefore, the typhoon asymmetric structure and the effect of terrain of Taiwan Island togetherresults in the abnormal rotating track. The terrain of Taiwan Island tends to increase the SW-NEasymmetric structure of the typhoon and has different effect on SE-NW asymmetric structure during thelandfall process of typhoon Haitang before entering and moving out of the Taiwan straits.

  11. New record of sheep frog (Hypopachus variolosus) in the Tres Marías Islands archipelago, Nayarit, Mexico Nuevo registro de la rana ovejera (Hypopachus variolosus) en el archipiélago de las islas Marías, Nayarit, México

    OpenAIRE

    J. Antonio de la Torre; Leonardo J. López-Damián; Horacio V. Bárcenas; Edith Nájera-Solís; Rodrigo A Medellín

    2010-01-01

    During a recent visit to María Madre Island, in the Tres Marías Island archipelago, 2 specimens of Hypopachus variolosus were found. This new record of the sheep frog from Tres Marías Island archipelago represents the first island record for this species. Due to the uncertainty about its conservation status in this locality, we consider necessary to improve the information about this species in the island.Durante una reciente vista a la isla María Madre del archipiélago de las islas Marías se...

  12. Compression of klockmannite, CuSe

    Science.gov (United States)

    Peiris, Suhithi M.; Pearson, Tania T.; Heinz, Dion L.

    1998-07-01

    Copper selenide (CuSe) was compressed in a diamond anvil cell at room temperature up to a pressure of 52 GPa and studied using energy dispersive x-ray diffraction and Raman spectroscopy. CuSe is nearly isostructural with copper sulfide (CuS), and a previous study indicates that copper sulfide undergoes reversible pressure-induced amorphization at 18 GPa. The intensity of the x-ray diffraction peaks for CuSe decrease slowly, however, they never completely disappear up to a pressure of 52 GPa. The third-order Birch-Murnaghan equation of state fit to the data yields K0=96.9±5.3 GPa and K0'=4.1±0.5. Vinet's universal equation of state yields essentially identical parameters. Raman spectroscopy demonstrates that upon compression, the S-S bond in CuS compresses differently than the Se-Se bond in CuSe, possibly accounting for the different high pressure behavior of these two very similar compounds.

  13. Quando a escritura se quebra nas ondas

    Directory of Open Access Journals (Sweden)

    Cleonice Paes Barreto Mourão

    2005-12-01

    Full Text Available Desviando-se da estrutura tradicional do romance, Virginia Woolf, em As ondas, põe em cena seis vozes cujas falas executam um movimento contínuo de retração e distenção – movimento das ondas. As falas não estabelecem diálogo, apenas se tocam para um novo relance, revivem o passado contraído no presente e no futuro, cada uma delas marcada por pontos de intensidade, revivências que se repetem por não poderem ser substituídas. O cenário onde se desenrolam as falas é construído por uma narradora que limita o tempo aopercurso de um dia, sempre à beira-mar. Metáfora maior da escritura, o mar se derrama sobre as falas e aí produz um efeito de liquefação: desmancham-se os vetores do tempo, do espaço e das situações, para deixar na superfície a profusão de palavras que sobrenadam os acontecimentos revivenciados.

  14. Biomineralization of Se Nanoshpere by Bacillus Licheniformis

    Institute of Scientific and Technical Information of China (English)

    Yongqiang Yuan; Jianming Zhu; Congqiang Liu; Shen Yu; Lei Lei

    2015-01-01

    Biological dissimilatory reduction of selenite (SeO32-) to elemental selenium (Se0) is com-mon, but the mineral formation and the biogenic process remain uncertain. In this study, we examined the Se0 formation during the selenite bioreduction by Bacillus licheniformis SeRB-1 through transmis-sion electron microscope (TEM), energy-dispersive spectrometry (EDS) and X-ray absorption fine structure (XAFS) techniques. Results showed that the reduction process occurred mostly during the exponential phase and early stationary phase, whilst the elemental selenium was produced in these pe-riods. From the TEM images and polyacrylamide gel electropheresis, it is known that the Se0 granule formation is a biologically-induced type, and the cell envelopes are the main biomineralization positions, and particles may go through a process from nucleation to crystallization, under the control of mi-crobes. In fact, the minerals are spherical nanoparticles, occurring as a microcrystal or amorphous form. It is vital to recognize which kinds of proteins and/or polysaccharides act as a template to direct nanoparticle nucleation and growth? This should focus for further studies. This study may shed light on the process of formation of Se(0) nanosphere.

  15. Amphoteric CdSe nanocrystalline quantum dots.

    Science.gov (United States)

    Islam, Mohammad A

    2008-06-25

    The nanocrystal quantum dot (NQD) charge states strongly influence their electrical transport properties in photovoltaic and electroluminescent devices, optical gains in NQD lasers, and the stability of the dots in thin films. We report a unique electrostatic nature of CdSe NQDs, studied by electrophoretic methods. When we submerged a pair of metal electrodes, in a parallel plate capacitor configuration, into a dilute solution of CdSe NQDs in hexane, and applied a DC voltage across the pair, thin films of CdSe NQDs were deposited on both the positive and the negative electrodes. Extensive characterizations including scanning electron microscopy (SEM), atomic force microscopy (AFM), Fourier transform infrared (FTIR) and Raman studies revealed that the films on both the positive and the negative electrodes were identical in every respect, clearly indicating that: (1) a fraction (<1%) of the CdSe NQDs in free form in hexane solution are charged and, more importantly, (2) there are equal numbers of positive and negative CdSe NQDs in the hexane solution. Experiments also show that the number of deposited dots is at least an order of magnitude higher than the number of initially charged dots, indicating regeneration. We used simple thermodynamics to explain such amphoteric nature and the charging/regeneration of the CdSe NQDs.

  16. Genomic island excisions in Bordetella petrii

    Directory of Open Access Journals (Sweden)

    Levillain Erwan

    2009-07-01

    Full Text Available Abstract Background Among the members of the genus Bordetella B. petrii is unique, since it is the only species isolated from the environment, while the pathogenic Bordetellae are obligately associated with host organisms. Another feature distinguishing B. petrii from the other sequenced Bordetellae is the presence of a large number of mobile genetic elements including several large genomic regions with typical characteristics of genomic islands collectively known as integrative and conjugative elements (ICEs. These elements mainly encode accessory metabolic factors enabling this bacterium to grow on a large repertoire of aromatic compounds. Results During in vitro culture of Bordetella petrii colony variants appear frequently. We show that this variability can be attributed to the presence of a large number of metastable mobile genetic elements on its chromosome. In fact, the genome sequence of B. petrii revealed the presence of at least seven large genomic islands mostly encoding accessory metabolic functions involved in the degradation of aromatic compounds and detoxification of heavy metals. Four of these islands (termed GI1 to GI3 and GI6 are highly related to ICEclc of Pseudomonas knackmussii sp. strain B13. Here we present first data about the molecular characterization of these islands. We defined the exact borders of each island and we show that during standard culture of the bacteria these islands get excised from the chromosome. For all but one of these islands (GI5 we could detect circular intermediates. For the clc-like elements GI1 to GI3 of B. petrii we provide evidence that tandem insertion of these islands which all encode highly related integrases and attachment sites may also lead to incorporation of genomic DNA which originally was not part of the island and to the formation of huge composite islands. By integration of a tetracycline resistance cassette into GI3 we found this island to be rather unstable and to be lost from

  17. Phylogeography of Cape Verde Island skinks (Mabuya).

    Science.gov (United States)

    Brown, R P; Suarez, N M; Smith, A; Pestano, J

    2001-06-01

    The Cape Verde Islands are of volcanic origin with most having appeared between the early Miocene and mid-Pleistocene. They contain six known species of Mabuya skinks. Phylogeographical relationships within and among the relatively widespread taxa M. stangeri, M. spinalis and M. delalandii were inferred, based on approximately 1 kbp of the cytochrome b gene (mitochondrial DNA). Reciprocal monophyly of M. spinalis and M. stangeri was established, which may have arisen from an early Pliocene/late Miocene cladogenetic event. Considerable between-island sequence divergence was detected among M. spinalis, which appears to have colonized the older islands (Sal and Boavista) first. Much lower sequence divergence was found in M. delalandii, indicating a more recent range expansion. Here, evidence points to colonization of the younger islands of Brava and Fogo soon after appearance. There are similarities between some of the described patterns and those seen in lizards from the Canary Islands.

  18. Incoherent Ag islands growth on Ni(100)

    Science.gov (United States)

    Marie, J. B.; Braems, I.; Bellec, A.; Chacon, C.; Creuze, J.; Girard, Y.; Gueddani, S.; Lagoute, J.; Repain, V.; Rousset, S.

    2017-02-01

    Growth of two-dimensional superstructure and island morphologies of silver atoms evaporated on a nickel (100) surface are studied by scanning tunneling microscopy. Near-equilibrium islands form at moderate annealing temperature (lower than 500 K) and present two kinds of morphologies. While they share a common monolayer c(2×8) superstructure, two distinct populations of islands coexist: rounded islands grown on the surface and spindle-shaped islands grown inside the Ni surface. The latter present a clear saturation of their density with increasing coverage. These shapes are mostly dominated by boundary energies as confirmed by a simple two-dimensional Wulff model whose parameters are derived using molecular statics simulations. Further annealing to 700 K leads to long Ag strips decorating the Ni step edges.

  19. Plasmonic Au islands on polymer nanopillars

    Energy Technology Data Exchange (ETDEWEB)

    Knoben, Wout; Brongersma, Sywert H; Crego-Calama, Mercedes, E-mail: wout.knoben@imec-nl.nl [Holst Centre/IMEC, High Tech Campus 31, 5656 AE Eindhoven (Netherlands)

    2011-07-22

    The refractive index sensitivity of localized surface plasmon resonance sensors can be improved by placing the plasmonic metal particles on pillars instead of on a planar substrate. In this paper, a simple and versatile colloidal lithography method for the fabrication of plasmonic Au islands on top of polymer nanopillars is described. The pillar height is controlled by varying the thickness of the initial polymer film. An increased pillar height results in a blue shift of the absorption spectrum of the Au islands. This is explained by a decreased effective refractive index around the islands. For pillars higher than approximately 40 nm no further blue shift is observed, in agreement with the decay length of the electromagnetic field around the islands. Pillar-supported Au islands were also fabricated on a flexible foil, demonstrating the potential of the method described here for the fabrication of flexible plasmonic substrates. Benefits and limitations of the method and of using polymers as the pillar material are discussed.

  20. Atomistic Model of Physical Ageing in Se-rich As-Se Glasses

    Energy Technology Data Exchange (ETDEWEB)

    Golovchak,R.; Shpotyuk, O.; Kozdras, A.; Bureau, B.; Vlcek, M.; Ganjoo, A.; Jain, H.

    2007-01-01

    Thermal, optical, X-ray excited and magnetic methods were used to develop a microstructural model of physical ageing in Se-rich glasses. The glass composition As10Se90, possessing a typical cross-linked chain structure, was chosen as a model object for the investigations. The effect of physical ageing in this glass was revealed by differential scanning calorimetry, whereas the corresponding changes in its atomic arrangement were studied by extended X-ray absorption fine structure, Raman and solid-state 77Se nuclear magnetic resonance spectroscopy. Straightening-shrinkage processes are shown to be responsible for the physical ageing in this Se-rich As-Se glass.

  1. Exciton-Phonon Scattering in CdSe/ZnSe Quantum Dots

    Institute of Scientific and Technical Information of China (English)

    张立功; 申德振; 范希武; 吕少哲

    2002-01-01

    A temperature-dependent photoluminescence measurement is performed in CdSe/ZnSe quantum dots with a ZnCdSe quantum well. We deduce the temperature dependence of the exciton linewidth and peak energy of the zero-dimensional exciton in the quantum dots and two-dimensional exciton in the CdSe wetting layer. The experimental data reveal a reduction of homogeneous broadening of the exciton line in the quantum dots in comparison with that in the two-dimensional wetting layer, which indicates the decrease of exciton and optical phonon coupling in the CdSe quantum dots.

  2. Analysis of hybrid systems for La Graciosa Island (Canary Islands)

    Energy Technology Data Exchange (ETDEWEB)

    Segura, L.; Gomez, A. [Departament of Process Engineering Industrial Enviromental Section, University of Las Palmas de Gran Canaria Campus Universitario of Tafira 35017 Las Palmas de Gran Canaria (Spain); Leon, V. [Red Electrica de Espana, Polygono de la Majuelos 38108 San Cristobal de La Laguna (Spain); Nuez, I. [Departament of Electronic and Automatic Engineering, University of Las Palmas de Gran Canaria Campus Universitario of Tafira 35017 Las Palmas de Gran Canaria (Spain)

    2006-07-01

    The main objectives of the study are the integration of the renewable energies, the study of the production of the hydrogen and the utilization in areas where have a high potential of renewable origin sources and a low capacity of drinkable water and energy power. In this work, it has been done the study of the actual energy necessity of the island and it is posed a series of solutions to its energy system. It is analyzed three cases. In the first step, it is exposed an isolated system with renewable energies and hydrogen as energy storage; in the second step, it is studied a system with renewable energies, hydrogen and an electricity-generating group as support; and in the third step, it is analyzed a case with renewable energy and connexion to the network (in this case, it would already not be an isolated system). (authors)

  3. Structural Characterization Of CdSe and ZnSe Nanostructures

    Science.gov (United States)

    Bhattacharyya, B.; Kalita, P. K.; Datta, P.

    2010-10-01

    Chemically bath deposited CdSe and ZnSe powder possesses mixed type structures whereas it is hexagonal wurtzite type in thin film form. SEM images of CdSe symmetrically exhibit the growth of spherical, rod and the rose(flower) type microstructures. ZnSe shows fine grain structures. The growth of microstructures in these selenides according to the growth direction along c-axis of hexagonal wurtzite crystal. Photoluminescence shows strong blue luminescence at 414 and 437 nm in CdSe nanoparticles. ZnSe shows strong PL at 650 nm that is attributed to the strong d-native traps. The blue shifted band gap luminescence at 392 nm shows the quantum confinement in ZnSe nanoparticles.

  4. MoSe2 / Polyaniline Solar Cells

    Directory of Open Access Journals (Sweden)

    H.S. Patel

    2011-01-01

    Full Text Available Solar cells have been investigated since long for harnessing the solar energy. During this decade, a new direction has come up where in the polymers have been used in the fabrication of solar cells. Polyaniline is one of the polymers which has shown potential for its applications in heterostructure solar cells. This material is being used along with the semiconductors like InSe, TiO2, Si etc. to form the photosensitive interface. In this direction, we report our investigations on the use of Molybdenum diselenide (MoSe2 as photosensitive semiconducting material in MoSe2 / polyaniline solar cells. In this paper, the preparation of MoSe2 / polyaniline solar cells has been reported. Also, the photovoltage → photocurrent characteristics of this structure have been discussed in detail in this paper. The variation of different parameters of MoSe2 / polyaniline solar cells (like open circuit voltage, short circuit current, photoconversion efficiency and fill factor with the intensity of incident illuminations has been reported in this paper. In present case, the photocurrent density was found to be around 250 µA/cm2 with the photovoltage around 8.5 mV (which is low the photoconversion efficiency was found to be around 0.7 % along with the fill factor around 0.33. The efforts have been made to explain the low values of the photoconversion efficiency.

  5. PbSe Nanocrystal Excitonic Solar Cells

    KAUST Repository

    Choi, Joshua J.

    2009-11-11

    We report the design, fabrication, and characterization of colloidal PbSe nanocrystal (NC)-based photovoltaic test structures that exhibit an excitonic solar cell mechanism. Charge extraction from the NC active layer is driven by a photoinduced chemical potential energy gradient at the nanostructured heterojunction. By minimizing perturbation to PbSe NC energy levels and thereby gaining insight into the "intrinsic" photovoltaic properties and charge transfer mechanism of PbSe NC, we show a direct correlation between interfacial energy level offsets and photovoltaic device performance. Size dependent PbSe NC energy levels were determined by cyclic voltammetry and optical spectroscopy and correlated to photovoltaic measurements. Photovoltaic test structures were fabricated from PbSe NC films sandwiched between layers of ZnO nanoparticles and PEDOT:PSS as electron and hole transporting elements, respectively. The device current-voltage characteristics suggest a charge separation mechanism that Is distinct from previously reported Schottky devices and consistent with signatures of excitonic solar cells. Remarkably, despite the limitation of planar junction structure, and without film thickness optimization, the best performing device shows a 1-sun power conversion efficiency of 3.4%, ranking among the highest performing NC-based solar cells reported to date. © 2009 American Chemical Society.

  6. Effect of composition on optical properties of GeSe3–Sb2Se3–ZnSe thin films

    Indian Academy of Sciences (India)

    M R Balboul; H M Hosni; M A Soliman; S A Fayek

    2014-10-01

    Optical properties of the chalcogenides GeSe3, Sb2Se3, ZnSe, (GeSe3)80(Sb2Se3)20 and (GeSe3)70 (Sb2Se3)10(ZnSe)20 thin films are investigated. Incorporation of ZnSe into both GeSe3, Sb2Se3 results in amorphous (GeSe3)70(Sb2Se3)10(ZnSe)20 composition. The estimated optical energy gap, g, is found to decrease from 3.06 eV for ZnSe to 1.81 eV for (GeSe3)70(Sb2Se3)10(ZnSe)20. While, the band tail width, e, exhibits an opposite trend. The g behaviour is believed to be associated with cohesive energy, CE, as the incorporation of ZnSe lowers its value. The calculated number of the excess of Se–Se homopolar bonds is found to affect mainly the e values. The refractive index, , is discussed in terms of Wemple–DiDomenico single oscillator dispersion model in the normal dispersion region. The oscillator energy, o, and the dispersion energy, d, are determined for films under investigation.

  7. Gold island fiber optic sensor

    Science.gov (United States)

    Meriaudeau, Fabrice; Wig, A. G.; Passian, A.; Downey, Todd R.; Buncick, Milan; Ferrell, Trinidad L.

    1999-12-01

    A fiber optic chemical sensor based on gold-island surface plasmon excitation is presented. The sensing part of the fiber is the end of the fiber onto which a thin layer of gold has been deposited to form a particulate surface. Annealing the gold reshapes the particles and produces an optical absorbance near 535 nm with the fiber in air. The optical absorption resonance of the gold particles is shifted if the fiber is immersed in a medium other than air. These resonance shifts are examined by transmission spectroscopy through the fiber. Experimental results for the sensitivity and dynamic range in the measurement of liquid solutions are in agreement with a basic theoretical model which characterizes the surface plasmon using nonretarded electrodynamics.

  8. The Kattegat Island of Anholt

    DEFF Research Database (Denmark)

    Schrøder, Niels

    2015-01-01

    Fluctuations in sea level influence the condition of many coastal groundwater aquifers. A rise in sea level can result in seawater intrusion in areas where the groundwater level is near the present sea level, and it may take a long time for the boundary between salt and fresh groundwater to reach...... equilibrium after a rapid sea level change. In this paper, the present understanding of the palaeo-hydrology of Anholt and its dependence on the past climate and sea level history will be outlined. Anholt has a single unconfined sand aquifer which can easily be modelled. This has proven to be a case in which...... relatively simple models can describe the processes that take place. New data are presented which provide a detailed description of the last 16,000 years of climate and sea level change influence on the forces that have formed the island. This geological history can be used to provide information...

  9. A transferable force field for CdS-CdSe-PbS-PbSe solid systems.

    Science.gov (United States)

    Fan, Zhaochuan; Koster, Rik S; Wang, Shuaiwei; Fang, Changming; Yalcin, Anil O; Tichelaar, Frans D; Zandbergen, Henny W; van Huis, Marijn A; Vlugt, Thijs J H

    2014-12-28

    A transferable force field for the PbSe-CdSe solid system using the partially charged rigid ion model has been successfully developed and was used to study the cation exchange in PbSe-CdSe heteronanocrystals [A. O. Yalcin et al., "Atomic resolution monitoring of cation exchange in CdSe-PbSe heteronanocrystals during epitaxial solid-solid-vapor growth," Nano Lett. 14, 3661-3667 (2014)]. In this work, we extend this force field by including another two important binary semiconductors, PbS and CdS, and provide detailed information on the validation of this force field. The parameterization combines Bader charge analysis, empirical fitting, and ab initio energy surface fitting. When compared with experimental data and density functional theory calculations, it is shown that a wide range of physical properties of bulk PbS, PbSe, CdS, CdSe, and their mixed phases can be accurately reproduced using this force field. The choice of functional forms and parameterization strategy is demonstrated to be rational and effective. This transferable force field can be used in various studies on II-VI and IV-VI semiconductor materials consisting of CdS, CdSe, PbS, and PbSe. Here, we demonstrate the applicability of the force field model by molecular dynamics simulations whereby transformations are initiated by cation exchange.

  10. Type-II excitons in ZnTe/ZnSe quantum dots

    Energy Technology Data Exchange (ETDEWEB)

    Andre, Regis; Najjar, Rita; Besombes, Lucien; Bougerol, Catherine; Tatarenko, Serge; Mariette, Henri [CEA-CNRS group ' ' Nanophysique et Semiconducteurs' ' , Institut Neel-CNRS, Grenoble (France)

    2009-04-15

    We present the photoluminescence and time resolved photoluminescence properties of an ensemble of ZnTe quantum dots embedded in a ZnSe matrix. Those heterostructures exhibit a type-II band alignment with holes confined within the dots and electrons kept in the close vicinity of the dots by coulomb attraction. We show that the structural and optical features of the samples, grown by molecular beam epitaxy, are highly sensitive to the growth conditions. Depending on the Se to Zn flux ratio, the ZnTe islands can disappear and lead to a thin 2D quantum well, or be preserved and localize excitons, as evidenced by photoluminescence experiments. (copyright 2009 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

  11. Incorporation of HNO{sub 3} into GaSe and InSe

    Energy Technology Data Exchange (ETDEWEB)

    Nekrasov, O.V.; Zavrazhnov, A.Yu.; Semenov, V.N. [Voronezh State Univ. (Russian Federation)] [and others

    1994-06-01

    Gallium selenide is a congruently melting compound (T{sub m}=1100 K) with a layered hexagonal crystal structure built from consecutive Se-Ga-Ga-Se slabs. These slabs are bonded by van der Waals forces. In the literature, GaSe crystals are reported to exist in several modifications, among them {epsilon}- and {gamma}-polytypes differing in layer alternation were reliably identified. GaSe is an off-stoichiometric, cation-rich phase with a homogenity range of 47.5 - 49.5 at. % Se (at T=1113 K). The {epsilon}- and {gamma}- polytypes always coexist, and the higher is the Ga content, the stronger is the structural disorder, as evidenced by broadening of lines with non-zero index l in X-ray diffraction patterns of GaSe. Irrespective of preparation conditions, GaSe is a p-type semiconductor with a band gap of 2.03 eV. A high dislocation density (10{sup 9} - 10{sup 11} cm{sup -2}), observed by TEM, is characteristic for these crystals. In many respects, InSe is similar to GaSe. InSe is a narrow-gap semiconductor with N-type conductivity. The homogeneity range of this compound is much narrower than that of GaSe, but it is likewise displaced toward metal-rich compositions. Interlayer incorporation is known to accompany a great variety of reactions, among which the reaction of HNO{sub 3} with GaSe and InSe is of great interest.

  12. Water resources of the Yap Islands

    Science.gov (United States)

    Van der Brug, Otto

    1984-01-01

    The Yap Islands consist of four major islands, Yap, Gagil-Tamil, Maap, and Rumung. Of these, Yap Island has more than half the total land area, most of the population, and almost all of the economic development. The islands of Maap and Rumung together compose only 15 percent of the land area and population. Average annual rainfall over the Yap Islands amounts to 122 inches. Rainfall-runoff comparisons indicate that about half of the annual rainfall runs off to the ocean on Yap Island and Gagil-Tamil. Streams on Gagil-Tamil are perennial but streams on Yap Island are dry an average of 3 months per year due to geologic differences. Analyses of water samples from 23 sources show the good quality and the chemical similarity of surface and ground water. This report summarizes the hydrologic data collected and provides interpretations that can be used by the planning and public works officials of Yap to make decisions concerning development and management of their water resources.

  13. Amchitka Island, Alaska, special sampling project 1997

    Energy Technology Data Exchange (ETDEWEB)

    U.S. Department of Energy, Nevada Operations Office

    2000-06-28

    This 1997 special sampling project represents a special radiobiological sampling effort to augment the 1996 Long-Term Hydrological Monitoring Program (LTHMP) for Amchitka Island in Alaska. Lying in the western portion of the Aleutian Islands arc, near the International Date Line, Amchitka Island is one of the southernmost islands of the Rat Island Chain. Between 1965 and 1971, the U.S. Atomic Energy Commission conducted three underground nuclear tests on Amchitka Island. In 1996, Greenpeace collected biota samples and speculated that several long-lived, man-made radionuclides detected (i.e., americium-241, plutonium-239 and -240, beryllium-7, and cesium-137) leaked into the surface environment from underground cavities created during the testing. The nuclides of interest are detected at extremely low concentrations throughout the environment. The objectives of this special sampling project were to scientifically refute the Greenpeace conclusions that the underground cavities were leaking contaminants to the surface. This was achieved by first confirming the presence of these radionuclides in the Amchitka Island surface environment and, second, if the radionuclides were present, determining if the source is the underground cavity or worldwide fallout. This special sampling and analysis determined that the only nonfallout-related radionuclide detected was a low level of tritium from the Long Shot test, which had been previously documented. The tritium contamination is monitored and continues a decreasing trend due to radioactive decay and dilution.

  14. Bats of the Western Indian Ocean Islands

    Directory of Open Access Journals (Sweden)

    John O’Brien

    2011-08-01

    Full Text Available The natural colonisation of many remote oceanic islands by bats, including those of the western Indian Ocean, has been facilitated by their unique capability among mammals for powered flight. In the western Indian Ocean region, only the Malagasy islands of Madagascar and the Comoros archipelago have been naturally colonised by non-volant mammals. Despite their greater potential for inter-island dispersal, and thus gene transfer, endemicity of Chiroptera in the western Indian Ocean islands is high. Given their vulnerability to stochastic and anthropogenic disturbances, greater focus needs to be placed on investigating the demographic and ecological history of bats on Western Indian Ocean islands to safeguard not only their future, but also the ecosystem functioning on these islands, for which they are undoubtedly such an integral part. Here, I summarise the taxonomic and life history information available on bats from Western Indian Ocean islands and highlight knowledge gaps and conservation issues that threaten the continued persistence of some species.

  15. Tl2Mo9Se11

    Directory of Open Access Journals (Sweden)

    Patrick Gougeon

    2010-08-01

    Full Text Available The structure of Tl2Mo9Se11, dithallium nonamolybdenum undecaselenide, is isotypic with Tl2Mo9S11 [Potel et al. (1980. Acta Cryst. B36, 1319–1322]. The structural set-up is characterized by a mixture of Mo6Sei8Sea6 and Mo12Sei14Sea6 cluster units in a 1:1 ratio. Both components are interconnected through interunit Mo—Se bonds. The cluster units are centered at Wyckoff positions 3a and 3b (point-group symmetry overline{3}.. The two TlI atoms are situated in the voids of the three-dimensional arrangement. Two of the five independent Se atoms and the Tl atoms lie on sites with 3. symmetry (Wyckoff site 6c.

  16. Improved photoluminescence quantum yield and stability of CdSe-TOP, CdSe-ODA-TOPO, CdSe/CdS and CdSe/EP nanocomposites

    Science.gov (United States)

    Wei, Shutian; Zhu, Zhilin; Wang, Zhixiao; Wei, Gugangfen; Wang, Pingjian; Li, Hai; Hua, Zhen; Lin, Zhonghai

    2016-07-01

    Size-controllable monodisperse CdSe nanocrystals with different organic capping were prepared based on the hot-injection method. The effective separation of nucleation and growth was achieved by rapidly mixing two highly reactive precursors. As a contrast, we prepared CdSe/CdS nanocrystals (NCs) successfully based on the selective ion layer adsorption and reaction (SILAR) technique. This inorganic capping obtained higher photoluminescence quantum yield (PLQY) of 59.3% compared with organic capping of 40.8%. Furthermore, the CdSe-epoxy resin (EP) composites were prepared by adopting a flexible ex situ method, and showed excellent stability in the ambient environment for one year. So the composites with both high PLQY of nanocrystals and excellent stability are very promising to device application.

  17. Lattice thermal conductivity of LaSe

    Energy Technology Data Exchange (ETDEWEB)

    Li, Wei, E-mail: tolwwt@163.com [School of Physics and Telecommunication Engineering, South China Normal University, 510006 Guangzhou (China); Pan, Zhong-liang; Chen, Jun-fang; He, Qin-yu [School of Physics and Telecommunication Engineering, South China Normal University, 510006 Guangzhou (China); Wang, Teng [School of Computer, South China Normal University, 510631 Guangzhou (China)

    2015-07-15

    The phonon dispersions and phonon density of states of LaSe are obtained, based on density functional perturbation theory and the norm-conserving pseudo-potential method. An anomaly in calculated phonon dispersion curves is presented and interpreted as a Kohn anomaly. The heat capacity of LaSe is calculated then. For the three-phonon process scattering, the lowest non-harmonic cubic terms of the interatomic potential are considered to obtain single-phonon relaxation rate by applying the Fermi's golden rule. For the boundary scattering, the average phonon relaxation time was obtained. Considering two kinds of phonon scattering mechanisms, we obtain the lattice thermal conductivity of LaSe.

  18. Što se dogodilo gospodinu Davisonu

    Directory of Open Access Journals (Sweden)

    Una Krizmanić Ožegović

    2014-12-01

    Full Text Available Prije svega, dozvolite mi da kažem da svi osjećamo najiskreniju sućut zbog onoga što se dogodilo gospodinu Davidsonu. Naravno, nitko od nas nije mogao ni pomisliti da će sve tako završiti. To ne treba ni napominjati. Mislim, doista ne vjerujem da je bilo tko mogao predvidjeti posljedice onoga što se dogodilo. Daleko od toga da smo sjeli i proveli detaljnu analizu rizika kad smo odlučili djelovati u tome smjeru. Naravno da ne. Riječ je o spontanoj odluci, jednostavno nas je ponio trenutak. No, unatoč nedostatku podrobnije analize, mogu sa sigurnošću reći kako ovakav ishod nitko od nas nije mogao ni zamisliti. Mislim, očito da nije. Jednostavno, mi nismo takvi ljudi, nitko od nas. Mislim da se to podrazumijeva. Mislim da sa sigurnošću mogu reći kako se to uvriježilo među nekim ljudima koje je ovo pogodilo, u odnosu na kasniji tijek događaja. Uključujući i samoga gospodina Davidsona. S obzirom na sve što smo uspjeli zaključiti. Mislim, znate, neki od ljudi kojima se okružio bili su s pravom oprezni, s obzirom na ono što bismo mogli nazvati pristupom. Tako barem ja to, i dandanas, vidim: takav pristup u sadašnjem trenutku ne bi bio dobro prihvaćen, s obzirom na trenutačne okolnosti. Govorim s obzirom i u odnosu na treće strane, u ovome kontekstu. S obzirom da smo držali kako bi se izravan pristup protumačio kao neprimjeren, u odnosu na širi kontekst i povijest i tome slično.

  19. Breeding productivity of Smith Island black ducks

    Science.gov (United States)

    Haramis, G.M.; Jorde, D.G.; Olsen, G.H.; Stotts, D.B.; Harrison, M.K.; Perry, M.C.

    2002-01-01

    We investigated the breeding performance of American black ducks (Anas rubripes) on Smith Island, Chesapeake Bay, to improve our understanding of island black duck breeding ecology and to make management recommendations to enhance productivity. During 1995-96, we implanted 56 female black ducks with 20-g radio transmitters and tracked 35 of the individuals through the breeding season to locate nests, determine nest fate, and identify brood habitat. We also increased preseason banding efforts and compared capture characteristics over 12 years with those from the Deal Island Wildlife Management Area, a banding site on the mainland of Tangier Sound. A low rate of nesting (37%), lack of renesting, and poor hatching success (31%) indicated that island salt marsh habitats present a harsh environment for breeding black ducks. Black ducks located 11 of 13 nests (85%) in black needlerush (Juncus roemerianus) marsh where they were vulnerable to flooding from extreme tides and to egg predators. No nests were found on forested tree hammocks, a feature that distinguishes Smith Island from nearby South Marsh and Bloodsworth Islands. Nest predators included red foxes (Vulpes vulpes), herring gulls (Larus argentams), fish crows (Corvus ossifragus), and, potentially, Norway rats (Rattus norvegicus). Unlike mainland red foxes, foxes radio tracked on Smith Island were found to be capable swimmers and effective low marsh predators. We found shoreline meadows of widgeon grass (Ruppia maritima) to be important foraging sites for black ducks and suspected that the virtual absence of fresh water in this high salinity environment (1217+ ppt) to incur some cost in terms of growth and survival of ducklings. Preseason bandings revealed a high proportion of banded adults and a strong positive correlation in age ratios with the Deal Island banding site. This latter finding strongly suggests a negative universal effect of storm tides on nest success for Tangier Sound black ducks. Management to

  20. Dommere og religiøse symboler

    DEFF Research Database (Denmark)

    Holtug, Nils

    2012-01-01

    Om politiske kontroverser, der angår religiøse symboler i det offentlige rum i Danmark, og den måde, hvorpå idéer, der undfanges på den nationalistiske højrefløj......Om politiske kontroverser, der angår religiøse symboler i det offentlige rum i Danmark, og den måde, hvorpå idéer, der undfanges på den nationalistiske højrefløj...

  1. El cielo se llena de santos mexicanos

    Directory of Open Access Journals (Sweden)

    Verónica Zárate Toscano

    2005-02-01

    Full Text Available Preliminares A fines del próximo mes de julio, si Dios le conserva la vida y su salud se lo permite, el Papa Juan Pablo II elevará a la categoría de Santo al indio Juan Diego en una ceremonia en la ciudad de México, culminando así un largo, discutido y tortuoso proceso de canonización. Suerte parecida corrió en su momento el criollo Felipe de Jesús; sin embargo, otros miembros de la corte celestial de origen mexicano se han elevado a los altares de manera casi vertiginosa, como es el caso de ...

  2. Formation of CuInSe{sub 2} from Cu{sub 2}Se and In{sub 2}Se{sub 3} compounds

    Energy Technology Data Exchange (ETDEWEB)

    Chen, Daigao [Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui (China); Wang, Deliang [Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui (China); CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui (China)

    2011-10-15

    Chalcopyrite {alpha}-CuInSe{sub 2} ({alpha}-CIS) was prepared from mixed powders of Cu{sub 2}Se and In{sub 2}Se{sub 3} by annealing in the Se- and the non-Se environments. The mechanically ground powders were in an overall amorphous state. The mechanical alloying produced Cu{sub 3}Se{sub 2} and CuSe compounds. At relatively low temperature, Cu{sub 3}Se{sub 2} decomposed, Cu{sub 2-x}Se and CuSe formed. The reaction for the formation of {alpha}-CuInSe{sub 2} occurred essentially at a temperature at {proportional_to}350 C in both the Se- and the non-Se environments. In the non-Se environment, reactions occurred by a solid-solid reaction and a certain amount of Se were released from the mixed powder, resulting in poor crystalline {alpha}-CuInSe{sub 2} powders. When annealed in the Se environment, low-melting Se-rich Cu-Se compounds were produced during reaction. The reactions occurred by a liquid-solid reaction above 450 C. Large-grained and good crystalline quality of chalcopyrite CIS with near stoichiometric atomic ratio was obtained above 450 C. (Copyright copyright 2011 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

  3. Growth and structural characterizations of GaSe and GaSe:Cd single crystals

    Science.gov (United States)

    Ashkhasi, Afsoun; Gürbulak, Bekir; Şata, Mehmet; Turgut, Güven; Duman, Songül

    2017-02-01

    GaSe and GaSe:Cd single crystals used in this research were grown by using the Bridgman/Stockbarger method. All of the samples were freshly and gently cleaved with a razor blade from the grown ingots and no further polishing and cleaning treatments were required because of the natural mirror-like cleavage faces. The Samples were cleaved along the cleavage planes (001). The structure and lattice parameters of the undoped GaSe and GaSe:Cd semiconductors have been analyzed using a X-ray diffractometer (XRD), Scanning electron microscopy (SEM) and energy dispersive X-rays (EDX) techniques. It is found that GaSe and GaSe:Cd crystals have hexagonal structure, quite close 2θ peak values. XRD measurements indicate that there is an increase in peak intensities at specific annealing temperatures (500°C). Cd doping causes a significant decrease in the XRD peak intensity.

  4. {InSe}/{GaSe} heterointerfaces prepared by Van der Waals epitaxy

    Science.gov (United States)

    Lang, O.; Klein, A.; Schlaf, R.; Löher, T.; Pettenkofer, C.; Jaegermann, W.; Chevy, A.

    1995-01-01

    Epitaxial films of layered substrates can be prepared onto layered substrates even for large lattice mismatch, when the growth is attempted with the Van der Waals surfaces opposing each other (Van der Waals epitaxy). Thin epitaxial InSe(GaSe) films are prepared onto ultrahigh vacuum (UHV) cleaved GaSe(InSe) Van der Waals (0001) surfaces. The films and the heterointerface are characterized by photoelectron spectroscopy, electron diffraction and scanning tunneling microscopy (STM). High quality and stoichiometric films are obtained by direct InSe(GaSe) evaporation from a Knudsen cell at sample temperatures between 520 and 620 K. Despite a 6% lattice mismatch the deposited films are oriented with their c- and α-axis to the hexagonal substrate. The growth mostly follows the Frank-Van der Merwe mode. This rather ideal growth behaviour is related to the specific properties of the Van der Waals plane which contains no dangling bonds.

  5. Evolution of the social-learner-explorer strategy in an environmentally heterogeneous two-island model.

    Science.gov (United States)

    Aoki, Kenichi

    2010-09-01

    Social-learner-explorer (SE) is a learning strategy that combines accurate social learning with exploratory individual learning in that order. Arguably, it is one of the few plausible learning strategies that can support cumulative culture. We investigate numerically the factors that affect the evolution of SE in an environmentally heterogeneous two-island model. Conditions favorable to the evolution of SE include a small exogenous cost of social learning, the occurrence of migration after social learning but before individual learning, the ability to adaptively modify the behavioral phenotype in the postmigration environment (asymmetrical individual learning), and a relatively high migration rate. The implications of our model for the evolution of SE in humans are discussed. Of particular interest is the prediction that behaviors affecting fitness would have to be socially learned in the natal environment and then subsequently modified by individual learning in the postmigration environment, suggesting a life-cycle stage dependent reliance on the two types of learning.

  6. Case study: Bioremediation in the Aleutian Islands

    Energy Technology Data Exchange (ETDEWEB)

    Steward, K.J.; Laford, H.D. [URS Consultants, Inc., Seattle, WA (United States)

    1995-12-31

    This case study describes the design, construction, and operation of a bioremediation pile on Adak Island, which is located in the Aleutian Island chain. Approximately 1,900 m{sup 3} of petroleum-contaminated soil were placed in the bioremediation pile. The natural bioremediation process was enhanced by an oxygen and nutrient addition system to stimulate microbial activity. Despite the harsh weather on the island, after the first 6 months of operation, laboratory analyses of soil samples indicated a significant (80%) reduction in diesel concentrations.

  7. Birds of Wallops Island, Virginia, 1970 - 1992

    Science.gov (United States)

    Vaughn, Charles R.

    1993-01-01

    This Technical Memorandum provides extensive data on birdlife at Wallops Island, a mid-Atlantic barrier island, and home to NASA Wallops Flight Facility's launch range. Variation in the distribution and abundance of many species is considerable in this region, which is centered along the north-south axis of the Delmarva Peninsula. Data (date of occurrence and general abundance) and analysis of the Island's diverse habitat structure are provided. A total of 244 species of birds are recorded; a summary of the records are given in the Species Accounts and the Appendix.

  8. Botanical results of a trip to the Salajar Islands

    NARCIS (Netherlands)

    Docters van Leeuwen, W.M.

    1937-01-01

    The Salajar Islands strew the Flores Sea between Celebes and Flores. The group consists of no less than 73 smaller and larger islands. The principal islands are: Salajar or Tanadoang, Djampea, Kalao, Kalaotoa, and Bonerate. A number of smaller islands form together the group of the so-called Tiger I

  9. 33 CFR 117.615 - Plum Island River.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Plum Island River. 117.615... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Massachusetts § 117.615 Plum Island River. The draw of the Plum Island Turnpike Bridge, mile 3.3 between Newburyport and Plum Island, shall operate...

  10. FBSAB RECRUIT Reef Fish Belt Transect Survey at Hawaii Island (Big Island), Main Hawaiian Islands, 2009 (NODC Accession 0073870)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Shore-based belt transects were conducted at 1 to ~ 5 m depths at a total two (2) sites on the leeward coast (South Kohala district) of the Big Island (Hawaii...

  11. Aleutian Canada goose survey at Nizki and Alaid Islands, Near Islands group, Aleutian Islands, spring 1983: Final report

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Introduced Arctic foxes were eliminated from Nizki and Alaid islands in the late 1970's. Due to the unavailability of a support vessel, mainland reared Aleutian...

  12. FBSAD Recruit Reef Fish Belt Transect Survey at Hawaii Island (Big Island), Main Hawaiian Islands, 2005 (NODC Accession 0046935)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Shore-based belt transects were conducted at 8-13 m depths at 3 longshore sites on the leeward coast (North and South Kohala districts) of the Big Island (Hawaii...

  13. Synthesis of near-infrared-emitting CdTe/CdSe/ZnSe/ZnS heterostructure.

    Science.gov (United States)

    Yang, Ping

    2014-04-01

    Near-infrared-emitting quantum dots (QDs) were fabricated via organic synthesis strategies through constructing CdTe/CdSe/ZnSe/ZnS multishell heterostructure. An effective shell-coating route was developed for multishell growth on CdTe cores. Core/shell growth was monitored by absorption and photoluminescence (PL) spectroscopy and transmission electron microscopy observation. Yellow emitting CdTe cores were coated with a CdSe shell to generate type II structure. This yields core/shell QDs with red photoluminescence. The passivation by the ZnSe shell having a substantially wide bandgap confines the excitons within the CdTe/CdSe interface and isolates them from the solution environment and consequently improves the stability of the heterostructure. An additional ZnS shell was deposited around the outer layer of CdTe/CdSe/ZnSe QDs to form a heterostructure through the reaction between zinc oleate and trioctylphosphine sulfur in the crude CdTe/CdSe/ZnSe solution. By varying CdTe core size and each shell thickness, the PL wavelength of the obtained heterostructure can span from 580 to 770 nm. The PL efficiency is quenched in CdTe QDs in diluted solution but increases substantially up to 24% for CdTe/CdSe core/shell QDs. The PL efficiency of CdTe/CdSe/ZnSe/ZnS QDs with average diameter of 5.4 nm and a PL peak wavelength of 770 nm is 20%.

  14. Studying Islands: On Whose Terms? Some Epistemological and Methodological Challenges to the Pursuit of Island Studies

    Directory of Open Access Journals (Sweden)

    Godfrey Baldacchino

    2008-05-01

    Full Text Available The pursuit of nissology, or island studies, calls for a re-centering of focus from mainland to island, away from the discourse of conquest of mainlanders, giving voice and platform for the expression of island narratives. Yet, studying islands ‘on their own terms’, in spite of its predilection for “authenticity”, is fraught with epistemological and methodological difficulties. The insider/outsider distinction does not work all that well when it comes to islands, where hybridity is the norm. This paper seeks to extend this debate, grappling especially with the contributions of Grant McCall and Peter Hay to the sparse literature. Five dilemmas related to indigenous island geographies are presented and discussed, in a semi-autobiographical style.

  15. One-pot synthesis of hollow NiSe-CoSe nanoparticles with improved performance for hybrid supercapacitors

    Science.gov (United States)

    Chen, Haichao; Fan, Meiqiang; Li, Chao; Tian, Guanglei; Lv, Chunju; Chen, Da; Shu, Kangying; Jiang, Jianjun

    2016-10-01

    Hollow NiSe-CoSe samples have been synthesized for the first time via a one-pot solvothermal approach. The strategy is robust enough to synthesize NiSe-CoSe nanoparticles with different NiSe to CoSe ratios but with a similar hollow structure. Co ions in the NiSe-CoSe nanoparticles play decisive role for formation of the hollow structure; otherwise, the nanoparticles become solid for the NiSe sample. When used as the positive electroactive materials for energy storage, the NiSe-CoSe samples show excellent electrochemical activity in alkaline electrolyte. Using the synergistic effect between NiSe and CoSe, the electrochemical performance of NiSe-CoSe can be tuned by varying the NiSe to CoSe ratios. The NiSe-CoSe sample with a NiSe to CoSe ratio of 4:2 shows the best electrochemical performance in terms of superior specific capacity, improved rate capability and excellent cycling stability. In addition, the electrochemical performance of NiSe-CoSe sample with a NiSe to CoSe ratio of 4:2 is also evaluated via assembling hybrid supercapacitors with RGO, and the hybrid supercapacitor delivers both high power and energy densities (41.8 Wh kg-1 at 750 W kg-1 and 20.3 Wh kg-1 at 30 kW kg-1).

  16. Se activity and its effect on Cu(In,Ga)Se{sub 2} photovoltaic thin films

    Energy Technology Data Exchange (ETDEWEB)

    Contreras, Miguel A.; Repins, Ingrid; Metzger, Wyatt K.; Romero, Manuel [National Renewable Energy Laboratory, Golden, CO (United States); Abou-Ras, Daniel [Hahn-Meitner-Institut Berlin (Germany)

    2009-05-15

    We study some physical properties of CuIn{sub 1-x}Ga{sub x}Se{sub 2} thin-films fabricated by evaporation from elemental sources under various Selenium environments. Specifically, thin-films were fabricated under growth conditions such as Se deficiency, near stoichiometry and excess Se during coevaporation to investigate the impact of the Se environment on absorber film properties and ultimately the device performance. We determine the chemical activity of Se in the evaporation process has a strong influence on film macrostructure (prefered orientation) and microstructure, particularly at the grain and grain boundary level. It is shown that the optoelectronic properties at grain boundaries are affected by the Se environment used resulting in absorber thin-films with distinctive defect distribution and defect density. Consequently, the performance of the solar cells fabricated from those films is also affected by the Se environment. These effects on solar cell performance and absorber properties are reported in a (i) structural analysis of the CuIn{sub 1-x}Ga{sub x}Se{sub 2}/Mo/glass samples by X-ray and electron backscattering techniques; (ii) optolectronic radiative characteristics of the absorbers by cathode luminescence and photoluminescence studies and (iii) current-voltage, quantum efficiency and capacitance-voltage measurements for the solar cells made from the absorbers fabricated under the pre prescribed Se growth conditions. (copyright 2009 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

  17. Inverse-photoemission spectroscopy of GaSe and InSe

    Science.gov (United States)

    Sporken, R.; Hafsi, R.; Coletti, F.; Debever, J. M.; Thiry, P. A.; Chevy, A.

    1994-04-01

    The lamellar semiconductors GaSe and InSe have been studied with k-resolved inverse-photoemission spectroscopy along two major symmetry directions (Γ¯ K¯ and Γ¯ M¯) of the surface Brillouin zone. Three bands with well-resolved features are observed from which the dispersion of the conduction bands can be determined with good precision. The minimum of the conduction band is found at M¯ in GaSe and at Γ¯ in InSe. These results are compared with theoretical studies using pseudopotential and tight-binding calculations.

  18. Urban heat islands in China enhanced by haze pollution

    Science.gov (United States)

    Cao, Chang; Lee, Xuhui; Liu, Shoudong; Schultz, Natalie; Xiao, Wei; Zhang, Mi; Zhao, Lei

    2016-08-01

    The urban heat island (UHI), the phenomenon of higher temperatures in urban land than the surrounding rural land, is commonly attributed to changes in biophysical properties of the land surface associated with urbanization. Here we provide evidence for a long-held hypothesis that the biogeochemical effect of urban aerosol or haze pollution is also a contributor to the UHI. Our results are based on satellite observations and urban climate model calculations. We find that a significant factor controlling the nighttime surface UHI across China is the urban-rural difference in the haze pollution level. The average haze contribution to the nighttime surface UHI is 0.7+/-0.3 K (mean+/-1 s.e.) for semi-arid cities, which is stronger than that in the humid climate due to a stronger longwave radiative forcing of coarser aerosols. Mitigation of haze pollution therefore provides a co-benefit of reducing heat stress on urban residents.

  19. Electroreflectance study of RuSe 2

    Science.gov (United States)

    Huang, Y. S.; Lin, S. S.; Sheu, J. S.; Shen, W. M.; Pollak, Fred H.

    1990-12-01

    We report the first electrolyte-electroreflectance (EER) study of a RuSe 2 single crystal in the photon energy region of 0.9-5.5 eV. The EER spectrum exhibits differential like structure in the vicinity of interband transitions. The transition energies are determined accurately. A probable energy-band structure is constructed.

  20. Enriched $^{82}$Se for the LUCIFER experiment

    CERN Document Server

    Beeman, J W; Benetti, P; Cardani, L; Casali, N; Chiesa, D; Clemenza, M; Dafinei, I; Di Domizio, S; Ferroni, F; Gironi, L; Giuliani, A; Gotti, C; Laubenstein, M; Maino, M; Nagorny, S; Nisi, S; Nones, C; Orio, F; Pagnanini, L; Pattavina, L; Pessina, G; Piperno, G; Pirro, S; Previtali, E; Rusconi, C; Schäffner, K; Tomei, C; Vignati, M

    2015-01-01

    The LUCIFER project aims at deploying the first array of enriched scintillating bolometers for the investigation of neutrinoless double-beta decay of $^{82}$Se. The matrix which embeds the source is an array of ZnSe crystals, where enriched $^{82}$Se is used as decay isotope. The radiopurity of the initial components employed for manufacturing crystals, that can be operated as bolometers, is crucial for achieving a null background level in the region of interest for double-beta decay investigations. In this work, we evaluated the radioactive content in 2.5 kg of 96.3% enriched $^{82}$Se metal, measured with a high-purity germanium detector at the Gran Sasso deep underground laboratory. The limits on internal contaminations of primordial decay chain elements of $^{232}$Th, $^{238}$U and $^{235}$U are respectively: $<$61 $\\mu$Bq/kg, $<$110 $\\mu$Bq/kg and $<$74 $\\mu$Bq/kg at 90% C.L.. The extremely low-background conditions in which the measurement was carried out and the high radiopurity of the $^{82}$...

  1. Y Se Repite = And It Repeats Itself

    Science.gov (United States)

    Katzew, Adriana

    2010-01-01

    In this article, the author discusses Y Se Repite [And It Repeats Itself], a project she conceptualized due to the growing number of Latino/a Mexican migrant workers in dairy farms in the state of Vermont. In 2006, approximately 2,000 Latinos/as--most of them undocumented Mexican migrant workers--worked throughout the state's dairy farms, yet…

  2. No todo lo que cuenta se cuenta

    NARCIS (Netherlands)

    van Rijckevorsel, J.

    2008-01-01

    En este trabajo publicado en "Insurance Economics" Nº 58 (Julio 2008), Jan van Rijckevorsel hace un profundo análisis del uso práctico de las estadísticas de seguros aplicadas a aspectos reales del quehacer institucional del sector, y señala varios campos (como el valor y calificación de la reputaci

  3. Det faderløse samfund

    DEFF Research Database (Denmark)

    Jensen, Henrik

    Det faderløse samfund er en kulturhistorisk afdækning af fader- og autoritetstabet i det 20. århundredes Europa, med fokus på fader-søn-forholdet og fortalt gennem skikkelser som Max Weber, Freud, Jung, Kafka - og ’den uregerlige søn’ over dem alle, psykologen og anarkisten Otto Gross. Den er...

  4. Reference: SE2PVGRP1 [PLACE

    Lifescience Database Archive (English)

    Full Text Available ter, domain A of the 35S promoter and the 35S2 promoter. Transgenic Res 4:388-396 (1995) PubMed: 7581519; ... ...SE2PVGRP1 Elmayan T, Tepfer M. Evaluation in tobacco of the organ specificity and strength of the rolD promo

  5. Researching Pacific island livelihoods: mobility, natural resource management and nissology.

    Science.gov (United States)

    Christensen, Andreas E; Mertz, Ole

    2010-01-01

    Small island literature is vast in focus and aim, and is rooted in many different disciplines. The challenge is to find common grounds for researching small islands conceptually and theoretically. The aim of this article is to comment on how to research small islands, including a discussion on contemporary theories of nissology and conceptual analytical frameworks for island research. Through a review of selected case-study-based island literature on changing livelihoods coming out of the South Pacific, we wish to illustrate and discuss advantages of finding common grounds for small island studies. The focus is on two dimensions of island livelihood, migration and natural resource management, both of which are significant contributors in making island livelihoods and shaping Pacific seascapes. We argue that there is still a substantial lack of studies targeting small island dynamics that are empirical and interdisciplinary in focus and link socio-economic and ecological processes of small island societies at temporal and analytical scales.

  6. Whale shark (Rhincodon typus) seasonal presence, residence time and habitat use at darwin island, galapagos marine reserve.

    Science.gov (United States)

    Acuña-Marrero, David; Jiménez, Jesús; Smith, Franz; Doherty, Paul F; Hearn, Alex; Green, Jonathan R; Paredes-Jarrín, Jules; Salinas-de-León, Pelayo

    2014-01-01

    The life history of the whale shark (Rhincodon typus), including its reproductive ecology, still remains largely unknown. Here, we present results from the first whale shark population study around Darwin Island, Galapagos Marine Reserve. Following a diversified approach we characterized seasonal occurrence, population structure and size, and described habitat use of whale sharks based on fine scale movements around the island. Whale shark presence at Darwin Island was negatively correlated with Sea Surface Temperature (SST), with highest abundance corresponding to a cool season between July and December over six years of monitoring. From 2011 to 2013 we photo-identified 82 whale sharks ranging from 4 to 13.1 m Total Length (TL). Size distribution was bimodal, with a great majority (91.5%) of adult female individuals averaging 11.35 m±0.12 m (TL±SE), all but one showing signs of a potential pregnancy. Population dynamics models for apparently pregnant sharks estimated the presence of 3.76±0.90 (mean ± SE) sharks in the study area per day with an individual residence time of 2.09±0.51 (mean ± SE) days. Movement patterns analysis of four apparently pregnant individuals tracked with acoustic tags at Darwin Island revealed an intense use of Darwin's Arch, where no feeding or specific behavior has been recorded, together with periodic excursions around the island's vicinity. Sharks showed a preference for intermediate depths (20-30 m) with occasional dives mostly to mid-water, remaining the majority of their time at water temperatures between 24-25°C. All of our results point to Darwin Island as an important stopover in a migration, possibly with reproductive purposes, rather than an aggregation site. Current studies carried out in this area to investigate regional scale movement patterns may provide essential information about possible pupping grounds for this enigmatic species.

  7. 76 FR 72369 - Safety Zone; Marco Island Marriott Charity Fireworks Display, Gulf of Mexico, Marco Island, FL

    Science.gov (United States)

    2011-11-23

    ... No. USCG-2011-0968] RIN 1625-AA00 Safety Zone; Marco Island Marriott Charity Fireworks Display, Gulf... the vicinity of Marco Island Marriott Beach Resort in Marco Island, Florida during the Marco Island Marriott Charity Fireworks Display on Friday, February 17, 2012. The safety zone is necessary to...

  8. Hillshades for the main 8 Hawaiian Islands

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — These hillshade datasets were derived from USGS 7.5' DEM Quads for the main 8 Hawaiian Islands. Individual DEM quads were first converted to a common datum, and...

  9. Heart Disease and Asians and Pacific Islanders

    Science.gov (United States)

    ... Data > Minority Population Profiles > Asian American > Heart Disease Heart Disease and Asians and Pacific Islanders Overall, Asian American ... are less likely than white adults to have heart disease and they are less likely to die from ...

  10. EAARL Topography-Fire Island National Seaashore

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — A first return elevation map (also known as a Digital Elevation Model or DEM) of Fire Island National Seashore was produced from remotely-sensed,...

  11. Marine mammal observations, Amchitka Island, Alaska

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Three marine mammals were regularly observed at Amchitka Island: sea otters (Enhydra lutris), Steller's sea lions (Eumetopias jubata), and harbor seals (Phoca...

  12. CRED REA Algal Assessments, Howland Island 2006

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Twelve quadrats were sampled along 2 consecutively-placed, 25m transect lines as part of Rapid Ecological Assessments conducted at 4 sites at Howland Island in the...

  13. US Virgin Islands Abandoned Vessel Inventory

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Abandoned Vessel Project Data for US Virgin Islands. Abandoned vessels pose a significant threat to the NOAA Trust resources through physical destruction of...

  14. Hawaii Abandoned Vessel Inventory, Lisianski Island, NWHI

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Abandoned Vessel Project Data for Lisianski Island, NWHI. Abandoned vessels pose a significant threat to the NOAA Trust resources through physical destruction...

  15. Inventory and Monitoring Plan for Howland Island, Baker Island, Jarvis Island National Wildlife Refuges; Units of the Pacific Remote Islands Marine National Monuments

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This plan documents and prioritizes inventory and monitoring surveys and research currently conducted, and proposed to be conducted, at the Howland Island, Baker...

  16. Natural History of St. Vincent Island, Florida

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — A study proposal aiming to ascertain, list and describe the woody flora and vertebrate fauna of St. Vincent Island, and to describe the terrestrial and fresh water...

  17. Quantifying and interpreting nestedness in habitat islands

    DEFF Research Database (Denmark)

    Matthews, Thomas J.; Cottee-Jones, H. Eden W.; Whittaker, Robert James

    2015-01-01

    of habitat island systems to date found significant nestedness to be a near universal feature, but the methods used have since been criticized as inappropriate. Thus, there is a need for an updated, critical examination of the prevalence, underlying drivers and implications of nestedness in multiple habitat...... island systems. Location: Global. Methods: Here, we collate 97 datasets from published habitat island studies, comprising multiple taxa. We use the NODF metric (nestedness metric based on overlap and decreasing fill) to estimate nestedness and determine significance using the four-step proportional...... with fragment area, suggesting that structured extinctions may be important in determining the composition of certain habitat island communities. We found that the degree of nestedness in an archipelago is an important consideration for systematic conservation planning. Main conclusions: Significant nestedness...

  18. Principal Hawaiian Islands Geoid Heights (GEOID96)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This 2' geoid height grid for the Principal Hawaiian Islands is distributed as a GEOID96 model. The computation used 61,000 terrestrial and marine gravity data held...

  19. Butterfly Survey on Pinckney Island NWR (2001)

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Butterfly (adult Lepidoptera) survey conducted monthly (May-Nov 2001) at nine locations within Pinckney Island NWR. These nine locations include Ibis Pond, Woodstork...

  20. Cross Island Evaluation and Management Plan 1986

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The purpose of this study is to provide Hurricane Island Outward Bound School with a document that to be used for internal planning purposes. In addition, it could...

  1. 1- HARPs of the Pacific Islands Region

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset contains information on acoustic recordings of cetaceans collected from areas within the Pacific Islands Region since 2006. In collaboration with...

  2. A Chemistry Lesson at Three Mile Island.

    Science.gov (United States)

    Mammano, Nicholas J.

    1980-01-01

    Details the procedures used in utilizing the hydrogen bubble incident at Three Mile Island to relate these basic chemical principles to nuclear chemistry: gas laws, Le Chatelier's principle and equilibrium, and stoichiometry. (CS)

  3. Urban Heat Island Effect Actions - Neighborhood Data

    Data.gov (United States)

    Louisville Metro Government — The urban heat island effect — defined as the difference in temperature between the core of Louisville and its suburbs — contributes to heat-related illnesses and...

  4. Environmental Assessment Cross Island Complex Maine

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The United States Fish and Wildlife Service proposes to acquire fee title rights to approximately 1,355 acres by donation and 130 acres by purchase of coastal island...

  5. Cat Island NWR Recreational Hunting Plan

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — A natural resource management plan describing the regulations and decision processes for sport hunting at Cat Island NWR. This plan has been replaced by a more...

  6. CRED REA Algal Assessments, Jarvis Island 2006

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Twelve quadrats were sampled along 2 consecutively-placed, 25m transect lines as part of Rapid Ecological Assessments conducted at 9 sites at Jarvis Island in the US...

  7. CNMI Northern Island Bottomfish System (NIBS)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Commonwealth of the Northern Mariana Islands (CNMI), Division of Fish and Wildlife (DFW) conducted a market sampling program that existed for a few years back in...

  8. Vegetation of Long Island, Adams County, Illinois

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — During the spring and early summer of 1994 most of Long Island, part of the Mark Twain NWR, was walked, and six east/west transects established. During July each...

  9. Breton Island, Louisiana Baseline (Geographic, NAD83)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Breton Island, Louisiana Baseline (Geographic, NAD83) consists of vector line data that were input into the Digital Shoreline Analysis System (DSAS) version 4.0,...

  10. EAARL Topography-Padre Island National Seashore

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Elevation maps (also known as Digital Elevation Models or DEMs) of Padre Island National Seashore were produced from remotely-sensed, geographically-referenced...

  11. Pacific Islands Climate Change Virtual Library

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Virtual Library provides access to web based climate variability and climate change information and tools relevant to the Pacific Islands including case studies,...

  12. Channel Islands, Kelp Forest Monitoring, Sea Temperature

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset from the Channel Islands National Park's Kelp Forest Monitoring Program has subtidal temperature data taken at permanent monitoring sites. Since 1993,...

  13. 1981 rock ptarmigan census, Adak Island, Alaska

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Most of the Aleutian Islands support populations of rock ptarmigan (Lagopus mutus), where their abundance is believed to be greatly influenced by the abundance of...

  14. Anaho Island: Mammalian species richness report

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This study assessed the mammalian species richness on Anaho Island using live trapping between July 18th and July 23rd 2005. The last mammalian species richness...

  15. CRED REA Algal Assessments, Baker Island 2006

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Twelve quadrats were sampled along 2 consecutively-placed, 25m transect lines as part of Rapid Ecological Assessments conducted at 8 sites at Baker Island in the US...

  16. Hawaii Abandoned Vessel Inventory, Hawaii Island

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Abandoned Vessel Project Data for Hawaii Island. Abandoned vessels pose a significant threat to the NOAA Trust resources through physical destruction of coral...

  17. Hawaii Abandoned Vessel Inventory, Midway Island, NWHI

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Abandoned Vessel Project Data for Midway Island, NWHI. Abandoned vessels pose a significant threat to the NOAA Trust resources through physical destruction of...

  18. 2007 Solomon Islands, Papua New Guinea Images

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — An earthquake measuring 8.1 struck 345 kilometers northwest of the Solomon Islands' capital Honiara at 0740 local time on 2 April. (2040 GMT 1 April). The earthquake...

  19. Long Island Smart Energy Corridor

    Energy Technology Data Exchange (ETDEWEB)

    Mui, Ming [Long Island Power Authority, Uniondale, NY (United States)

    2015-02-04

    The Long Island Power Authority (LIPA) has teamed with Stony Brook University (Stony Brook or SBU) and Farmingdale State College (Farmingdale or FSC), two branches of the State University of New York (SUNY), to create a “Smart Energy Corridor.” The project, located along the Route 110 business corridor on Long Island, New York, demonstrated the integration of a suite of Smart Grid technologies from substations to end-use loads. The Smart Energy Corridor Project included the following key features: -TECHNOLOGY: Demonstrated a full range of smart energy technologies, including substations and distribution feeder automation, fiber and radio communications backbone, advanced metering infrastructure (AM”), meter data management (MDM) system (which LIPA implemented outside of this project), field tools automation, customer-level energy management including automated energy management systems, and integration with distributed generation and plug-in hybrid electric vehicles. -MARKETING: A rigorous market test that identified customer response to an alternative time-of-use pricing plan and varying levels of information and analytical support. -CYBER SECURITY: Tested cyber security vulnerabilities in Smart Grid hardware, network, and application layers. Developed recommendations for policies, procedures, and technical controls to prevent or foil cyber-attacks and to harden the Smart Grid infrastructure. -RELIABILITY: Leveraged new Smart Grid-enabled data to increase system efficiency and reliability. Developed enhanced load forecasting, phase balancing, and voltage control techniques designed to work hand-in-hand with the Smart Grid technologies. -OUTREACH: Implemented public outreach and educational initiatives that were linked directly to the demonstration of Smart Grid technologies, tools, techniques, and system configurations. This included creation of full-scale operating models demonstrating application of Smart Grid technologies in business and residential

  20. Bryophyte floras of tropical Pacific islands

    OpenAIRE

    Miller, Harvey A.; Whittier, Henry O.

    1990-01-01

    A review of the status of bryological research in each of the nations, states or governmental units of southern Melanesia, Micronesia and tropical Polynesia shows the imperfect state of knowledge about the Pacific tropical islands. Best known overall are Hawaii and Micronesia with Wallis and Futuna, the Marquesas and the high mountains of Fiji seeming to be the least known potentially species rich areas. Involvement of residents from Pacific islands in botanical study and preservation of ecos...

  1. Marine Pollution at Northeast of Penang Island

    OpenAIRE

    H.A. Gasim; Hashim, A. M.; P.Z.M. Bakri; M.Z. Samsuri; N.L.A. Rais; N.D.M. Noor

    2013-01-01

    Oceans cover large area of earth surface and it is important for humans to protect from pollution. Malaysia has large marine areas which consist of islands, coastal and sea areas which are facing pollution problem due to the rapid urbanization and industrialization. This study investigated sources of marine pollution occurred at area near a reclamation project at the northeast of Penang Island. Three locations were chosen for water sampling which included Sg. Fetes, North Tanjung Tokong and G...

  2. Ambae Island, Vanuatu (South Pacific)

    Science.gov (United States)

    2005-01-01

    The recently active volcano Mt. Manaro is the dominant feature in this shaded relief image of Ambae Island, part of the Vanuatu archipelago located 1400 miles northeast of Sydney, Australia. About 5000 inhabitants, half the island's population, were evacuated in early December from the path of a possible lahar, or mud flow, when the volcano started spewing clouds of steam and toxic gases 10,000 feet into the atmosphere. Last active in 1996, the 1496 meter (4908 ft.) high Hawaiian-style basaltic shield volcano features two lakes within its summit caldera, or crater. The ash and gas plume is actually emerging from a vent at the center of Lake Voui (at left), which was formed approximately 425 years ago after an explosive eruption. Two visualization methods were combined to produce the image: shading and color coding of topographic height. The shade image was derived by computing topographic slope in the northwest-southeast direction, so that northwest slopes appear bright and southeast slopes appear dark. Color coding is directly related to topographic height, with green at the lower elevations, rising through yellow and tan, to white at the highest elevations. Elevation data used in this image were acquired by the Shuttle Radar Topography Mission aboard the Space Shuttle Endeavour, launched on Feb. 11, 2000. SRTM used the same radar instrument that comprised the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) that flew twice on the Space Shuttle Endeavour in 1994. SRTM was designed to collect 3-D measurements of the Earth's surface. To collect the 3-D data, engineers added a 60-meter (approximately 200-foot) mast, installed additional C-band and X-band antennas, and improved tracking and navigation devices. The mission is a cooperative project between NASA, the National Geospatial-Intelligence Agency (NGA) of the U.S. Department of Defense and the German and Italian space agencies. It is managed by NASA's Jet Propulsion Laboratory, Pasadena

  3. Speciation of Se and DOC in soil solution and their relation to Se bioavailability.

    NARCIS (Netherlands)

    Weng, L.P.; Vega, F.A.; Supriatin, S.; Bussink, W.; Riemsdijk, van W.H.

    2011-01-01

    A 0.01 M CaCl2 extraction is often used to asses the bioavailability of plant nutrients in soils. However, almost no correlation was found between selenium (Se) in the soil extraction and Se content in grass. The recently developed anion Donnan membrane technique was used to analyze chemical speciat

  4. Interaction induced dephasing of excitons in wide ZnSe/ZnMgSe single quantum wells

    DEFF Research Database (Denmark)

    Wagner, Hans Peter; Schätz, A.; Maier, R.;

    1998-01-01

    The dephasing of excitons in wide ZnSe/Zn0.94Mg0.06Se single quantum wells (SQW) is investigated by spectrally resolved, time integrated four-wave mixing (FWM). Simultaneous excitation of Is center-of-mass quantized heavy-hole and light-hole excition states leads to pronounced quantum beats. Pola...

  5. Ultra-Fast Synthesis for Ag2Se and CuAgSe Thermoelectric Materials

    Science.gov (United States)

    DUAN, H. Z.; LI, Y. L.; ZHAO, K. P.; QIU, P. F.; SHI, X.; CHEN, L. D.

    2016-10-01

    Ag2Se and CuAgSe have been recently reported as promising thermoelectric materials at room temperature. The traditional melting-annealing-sintering processes are used to grow Ag2Se and CuAgSe materials with the disadvantages of high costs of energy and time. In this work, phase-pure polycrystalline Ag2Se and CuAgSe compounds were synthesized from raw elemental powders directly by manual mixing followed by spark plasma sintering (MM-SPS) in a few minutes. The influence of SPS heating rate on the phase composition, microstructure, and thermoelectric properties, including Seebeck coefficient, electrical conductivity, and thermal conductivity, were investigated. The zTs of 0.8 at 390 K and 0.6 at 450 K are obtained for Ag2Se and CuAgSe, respectively, which is comparable with the values in the materials prepared by the traditional method. Furthermore, this ultrafast sample synthesis can significantly save material synthesis time and thus has the obvious advantage for large-scale production.

  6. Que se vea lo que se oye: a vueltas con los fonemas y las letras

    Directory of Open Access Journals (Sweden)

    Gómez del Estal Villarino, Mario

    2011-03-01

    Full Text Available Partiendo de lo que el refrán “La letra con sangre entra” viene a decir a quien se deje escucharlo, se abre una descripción de las diferencias radicales que se dan entre aprender a hablar y aprender a escribir. La relación entre ambas actividades no se puede entender sin analizar la tan extendida perversión que supone hablar lo que se escribe en vez de escribir lo que se habla. A continuación, se detallan algunos de los síntomas más frecuentes de dicha perversión, caracterizados todos por la intromisión de la conciencia en terrenos donde lo único que hace es estorbar, en especial la pronunciación pedantesca de ciertos finales silábicos o de palabra, como en traNSporte, aBStraKción, óPtico, oBjeto, fúTbol, libertaD, diGno o fraK, así como las distintas deformaciones que sufren las palabras que la ortografía académica prescribe que se escriban con la letra equis.

  7. Optical detectors on GaSe and InSe layered crystals

    Science.gov (United States)

    Kyazym-Zade, A. G.; Agaeva, A. A.; Salmanov, V. M.; Mokhtari, A. G.

    2007-12-01

    Fast uncooled GaSe and InSe detectors that can record ultrashort (10-12 10-9 s) laser pulses in the visual and near-IR ranges are developed. The quick response of the detectors is due to rapid recombination channels with a high capture cross section present in the crystals.

  8. Isothermal currents in InSe, GaSe, and GaS single crystals

    Energy Technology Data Exchange (ETDEWEB)

    Micocci, G.; Rizzo, A.; Tepore, A.; Zuanni, F. (Lecce Univ. (Italy). Ist. di Fisica)

    1983-11-16

    Isothermal current-time measurements are performed on InSe, GaSe, and GaS single crystals. The results reveal the presence of trapping centres and their activation energies and capture cross-sections are determined. The limitations of this method for the determination of trapping parameters in crystals are also discussed.

  9. Island studies as a decolonial project

    Directory of Open Access Journals (Sweden)

    Yaso Nadarajah

    2016-11-01

    Full Text Available The phenomenon of colonialism influenced the cultures, economies, and politics of the majority of the world’s population. The subsequent decolonization process has likewise had profound affects on colonized societies. Island societies undergoing decolonization face many of the same pressures and challenges as do mainland societies, yet island spatiality and the history of island colonization itself has left former and present-day island colonies with distinctive colonial legacies. From the Caribbean to the Arctic to the Pacific to the Indian Ocean to the Mediterranean, colonial and decolonial processes are creating tensions between maintenance of the culture of indigenous peoples, economic development, cultivation of cultural heritage, political modernization, status on the global stage, democratic governance, and educational achievement. We call for an island studies perspective on decolonization, emphasizing the importance of appropriately positioning expert knowledge relative to the needs of colonized and indigenous peoples and highlighting the pitfalls of neocolonialsim. We thus lay the groundwork for island studies as a decolonial project.

  10. Feedback-charging a metallic island

    Science.gov (United States)

    Schaller, Gernot

    2017-03-01

    We consider electronic transport through a single-electron quantum dot that is tunnel-coupled to an electronic lead and a metallic island. A background reservoir keeps the metallic island at a thermal state with the ambient temperature, while the charge accumulated on the island is reflected in a time-dependent chemical potential. Without feedback, a current would flow through the system until the chemical potentials of island and lead are equilibrated. A feedback loop can be implemented by a quantum point contact detecting the dot state, classical processing of the result and appropriate feedback actions on the electronic tunneling rates taken, with the objective to direct the current in a preferred direction. Since we directly take the detector counting statistics into account, this automatically includes measurement errors in the description. When mainly the rates are modified but hardly any energy is exchanged with the system, this feedback loop effectively implements a Maxwell demon, capable of transporting electrons against an electric bias and thereby charging the metallic island. Once the feedback protocol is stopped, the metallic island simply discharges. We find that a quantitative detector model may be useful for a realistic statistical description of feedback loops.

  11. Active ageing as lifestyle on Croatian islands

    Directory of Open Access Journals (Sweden)

    Klempić-Bogadi Sanja

    2014-01-01

    Full Text Available The main feature of Croatian islands, in addition to their beautiful nature, is the fact that they are demographically and sociologically one of the most threatened areas affected by ageing. The ageing of the island population is the result of a long-term depopulation caused by the continuous emigration of the younger working-active population over the past hundred years, but also by the retirement return migration in the last thirty years. The most critical situation is on small islands where the majority of population is aged over 60 and this has a significant impact on all aspects of island life. The research conducted on small islands in the Šibenik archipelago in 2011 has shown that older people live alone, with no significant health problems limiting their daily activities, in their own households (homes, on modest pensions, and many of them supplement their income through agriculture. They very often financially help their children, who live mostly in nearby mainland cities. The necessity of self-reliance, due to the lack of younger generations, forces the inhabitants of Croatian island to lead an active life until their old age. Although they are no longer actively employed, they still continue to contribute significantly to the family and society through their involvement in various community activities.

  12. Anisotropy in CdSe quantum rods

    Energy Technology Data Exchange (ETDEWEB)

    Li, Liang-shi

    2003-09-01

    The size-dependent optical and electronic properties of semiconductor nanocrystals have drawn much attention in the past decade, and have been very well understood for spherical ones. The advent of the synthetic methods to make rod-like CdSe nanocrystals with wurtzite structure has offered us a new opportunity to study their properties as functions of their shape. This dissertation includes three main parts: synthesis of CdSe nanorods with tightly controlled widths and lengths, their optical and dielectric properties, and their large-scale assembly, all of which are either directly or indirectly caused by the uniaxial crystallographic structure of wurtzite CdSe. The hexagonal wurtzite structure is believed to be the primary reason for the growth of CdSe nanorods. It represents itself in the kinetic stabilization of the rod-like particles over the spherical ones in the presence of phosphonic acids. By varying the composition of the surfactant mixture used for synthesis we have achieved tight control of the widths and lengths of the nanorods. The synthesis of monodisperse CdSe nanorods enables us to systematically study their size-dependent properties. For example, room temperature single particle fluorescence spectroscopy has shown that nanorods emit linearly polarized photoluminescence. Theoretical calculations have shown that it is due to the crossing between the two highest occupied electronic levels with increasing aspect ratio. We also measured the permanent electric dipole moment of the nanorods with transient electric birefringence technique. Experimental results on nanorods with different sizes show that the dipole moment is linear to the particle volume, indicating that it originates from the non-centrosymmetric hexagonal lattice. The elongation of the nanocrystals also results in the anisotropic inter-particle interaction. One of the consequences is the formation of liquid crystalline phases when the nanorods are dispersed in solvent to a high enough

  13. Abundance and survival rates of the Hawai'i Island associated spinner dolphin (Stenella longirostris stock.

    Directory of Open Access Journals (Sweden)

    Julian A Tyne

    Full Text Available Reliable population estimates are critical to implement effective management strategies. The Hawai'i Island spinner dolphin (Stenella longirostris is a genetically distinct stock that displays a rigid daily behavioural pattern, foraging offshore at night and resting in sheltered bays during the day. Consequently, they are exposed to frequent human interactions and disturbance. We estimated population parameters of this spinner dolphin stock using a systematic sampling design and capture-recapture models. From September 2010 to August 2011, boat-based photo-identification surveys were undertaken monthly over 132 days (>1,150 hours of effort; >100,000 dorsal fin images in the four main resting bays along the Kona Coast, Hawai'i Island. All images were graded according to photographic quality and distinctiveness. Over 32,000 images were included in the analyses, from which 607 distinctive individuals were catalogued and 214 were highly distinctive. Two independent estimates of the proportion of highly distinctive individuals in the population were not significantly different (p = 0.68. Individual heterogeneity and time variation in capture probabilities were strongly indicated for these data; therefore capture-recapture models allowing for these variations were used. The estimated annual apparent survival rate (product of true survival and permanent emigration was 0.97 SE ± 0.05. Open and closed capture-recapture models for the highly distinctive individuals photographed at least once each month produced similar abundance estimates. An estimate of 221 ± 4.3 SE highly distinctive spinner dolphins, resulted in a total abundance of 631 ± 60.1 SE, (95% CI 524-761 spinner dolphins in the Hawai'i Island stock, which is lower than previous estimates. When this abundance estimate is considered alongside the rigid daily behavioural pattern, genetic distinctiveness, and the ease of human access to spinner dolphins in their preferred resting habitats, this

  14. 'Cold' crystallization in nanostructurized 80GeSe2-20Ga2Se3 glass.

    Science.gov (United States)

    Klym, Halyna; Ingram, Adam; Shpotyuk, Oleh; Calvez, Laurent; Petracovschi, Elena; Kulyk, Bohdan; Serkiz, Roman; Szatanik, Roman

    2015-01-01

    'Cold' crystallization in 80GeSe2-20Ga2Se3 chalcogenide glass nanostructurized due to thermal annealing at 380°C for 10, 25, 50, 80, and 100 h are probed with X-ray diffraction, atomic force, and scanning electron microscopy, as well as positron annihilation spectroscopy performed in positron annihilation lifetime and Doppler broadening of annihilation line modes. It is shown that changes in defect-related component in the fit of experimental positron lifetime spectra for nanocrystallized glasses testify in favor of structural fragmentation of larger free-volume entities into smaller ones. Nanocrystallites of Ga2Se3 and/or GeGa4Se8 phases and prevalent GeSe2 phase extracted mainly at the surface of thermally treated samples with preceding nucleation and void agglomeration in the initial stage of annealing are characteristic features of cold crystallization.

  15. Ab initio calculations of optical constants of GaSe and InSe layered crystals

    Science.gov (United States)

    Sarkisov, S. Yu.; Kosobutsky, A. V.; Brudnyi, V. N.; Zhuravlev, Yu. N.

    2015-09-01

    The dielectric functions, refractive indices, and extinction coefficients of GaSe and InSe layered crystals have been calculated within the density functional theory. The calculations have been performed for the values of theoretical structural parameters optimized using the exchange-correlation functional, which allows one to take into account the dispersion interactions. It has been found that optical functions are characterized by the most pronounced polarization anisotropy in the range of photon energies of ˜4-7 eV. The frequency dependences for InSe compound in the range up to 4 eV demonstrate the more pronounced anisotropy as compared to GaSe. The results obtained for GaSe crystal agree better with the experimental data as compared to the previous calculations.

  16. Bryogeography of the Galapagos Islands

    NARCIS (Netherlands)

    Gradstein, S.R.; Weber, William A.

    1982-01-01

    De las Islas Galápagos se conoce más de 200 especies de briófitas (el número total de los musgos y de las hepáticas es de mas o menos igual). Más que 2/3 partes de las especies occurren en la selva y matorrales perennifolias y húmedas limitadas a las zonas altas de algunas islas. Una proporción elev

  17. Synchrotron-radiation photoemission study of CdS/CuInSe sub 2 heterojunction formation

    Energy Technology Data Exchange (ETDEWEB)

    Nelson, A.J.; Gebhard, S. (Solar Energy Research Institute, 1617 Cole Boulevard, Golden, CO (USA)); Rockett, A. (Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL (USA)); Colavita, E. (Department of Physics, University of Calabria, I-87036 Arcavacata di Rende, Cosenza (Italy)); Engelhardt, M.; Hoechst, H. (Synchrotron Radiation Center, University of Wisconsin-Madison, Stoughton, WI (USA))

    1990-10-15

    Synchrotron-radiation soft-x-ray photoemission spectroscopy was used to investigate the development of the electronic structure at the CdS/CuInSe{sub 2} heterojunction interface. CdS overlayers were deposited in steps on single-crystal {ital p}- and {ital n}-type CuInSe{sub 2} at 250 {degree}C. Results indicate that the CdS grows in registry with the substrate, initially in a two-dimensional growth mode followed by three-dimensional island growth as is corroborated by reflection high-energy electron-diffraction analysis. Photoemission measurements were acquired after each growth in order to observe changes in the valence-band electronic structure as well as changes in the In 4{ital d}, Se 3{ital d}, Cd 4{ital d}, and S 2{ital p} core lines. The results were used to correlate the interface chemistry with the electronic structure at these interfaces and to directly determine the CdS/CuInSe{sub 2} heterojunction valence-band discontinuity and the consequent heterojunction band diagram. These results show that the Katnani-Margaritondo method is unreliable in determining offsets for heterojunctions where significant Fermi-level pinning may occur and where the local structure and chemistry of the interface depends strongly on the specific heterojunction.

  18. Additions to the flora of Tenerife (Canary Islands, Spain

    Directory of Open Access Journals (Sweden)

    Verloove, F.

    2011-12-01

    Full Text Available Additions to the flora of Tenerife (Canary Islands, Spain.- Recent fieldwork in Tenerife, especially in September 2010, yielded several interesting new records of non-native vascular plants. Bothriochloa ischaemum var. songarica, “Asian” Cardamine flexuosa, Cestrum parqui, Digitaria violascens, Ficus lyrata, Ficus rubiginosa, Hoffmannseggia glauca, Hyparrhenia rufa subsp. altissima, Jacaranda mimosifolia, Merremia tuberosa, Passiflora morifolia, Phytolacca dioica, Schefflera actinophylla and Solanum abutiloides are reported for the first time from the Canary Islands, while Eragrostis barrelieri var. pygmaea, Ficus microcarpa, Ipomoea purpurea, Leucaena leucocephala subsp. glabrata, Sechium edule, Tradescantia zebrina and Turnera ulmifolia are new to the flora of the island of Tenerife. New records of Acacia cyclops, Atriplex suberecta, Heliotropium curassavicum, Paspalum dilatatum, P. notatum, Pluchea ovalis, Pulicaria paludosa, Sclerophylax spinescens and Solanum villosum subsp. miniatum confirm their recent expansion on the island of Tenerife. New records are provided for the recently described Sporobolus copei . Finally, Paspalum vaginatum (hitherto possibly confused with P. distichum and Potentilla indica are confirmed from the island of Tenerife.

    Adiciones para la flora de Tenerife (Islas Canarias, España.- Algunos recientes trabajos de campo en Tenerife, especialmente en Septiembre de 2010, trajeron consigo varias nuevas e interesantes adiciones de plantas vasculares no autóctonas. Bothriochloa ischaemum var. songarica, Cardamine flexuosa “Asiática”, Cestrum parqui, Digitaria violascens, Ficus lyrata, Ficus rubiginosa, Hoffmannseggia glauca, Hyparrhenia rufa subsp. altissima, Jacaranda mimosifolia, Merremia tuberosa, Passiflora morifolia, Phytolacca dioica, Schefflera actinophylla y

  19. Superconducting gap structure of FeSe.

    Science.gov (United States)

    Jiao, Lin; Huang, Chien-Lung; Rößler, Sahana; Koz, Cevriye; Rößler, Ulrich K; Schwarz, Ulrich; Wirth, Steffen

    2017-03-07

    The microscopic mechanism governing the zero-resistance flow of current in some iron-based, high-temperature superconducting materials is not well understood up to now. A central issue concerning the investigation of these materials is their superconducting gap symmetry and structure. Here we present a combined study of low-temperature specific heat and scanning tunnelling microscopy measurements on single crystalline FeSe. The results reveal the existence of at least two superconducting gaps which can be represented by a phenomenological two-band model. The analysis of the specific heat suggests significant anisotropy in the gap magnitude with deep gap minima. The tunneling spectra display an overall "U"-shaped gap close to the Fermi level away as well as on top of twin boundaries. These results are compatible with the anisotropic nodeless models describing superconductivity in FeSe.

  20. Parker River National Wildlife Refuge (Plum Island, Massasoit, Monomoy, Nantucket, Noman's Land, Pond Island, Thacher Island Refuges): Annual narrative report: Calendar year 1984

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Parker River National Wildlife Refuge (including Plum Island, Massasoit, Monomoy, Nantucket, Noman's Land, Pond Island, Thacher...

  1. Sandy Point, Green Cay and Buck Island National Wildlife Refuges: United States Virgin Islands, Caribbean Islands National Wildlife Refuge Complex: Comprehensive Conservation Plan

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This Comprehensive Conservation Plan (CCP) was written to guide management on United States Virgin Islands, Caribbean Islands NWR Complex for the next 15 years. This...

  2. Patrimonio cultural: lo intangible se hace tangible

    Directory of Open Access Journals (Sweden)

    William Heredia Orjuela

    2004-11-01

    Full Text Available Se presentan tres reflexiones a manera de ensayo, elaboradas por estudiantes de vii semestre de la Facultad de Administración de Empresas Turísticas y Hoteleras. El tema central que engloba los escritos es el de la responsabilidad frente al patrimonio cultural, su valoración y su relación con el turismo. En el ensayo La protección del patrimonio cultural como reflejo del ser humano, la estudiante cecilia hinosTrosa hace un llamado de atención frente al problema del tráfico ilícito de bienes que conlleva la pérdida de testimonios de la cultura humana. El escrito de la estudiante mariel cecilia hernández destaca las bondades de recuperar las tradiciones y de cómo éstas se pueden difundir a través del turismo. Por último, el estudiante William heredia hace una reflexión sobre la tangibilidad de lo intangible, en el ensayo Patrimonio Cultural: lo tangible se hace intangible, donde destaca la declaratoria del Carnaval de Barranquilla como patrimonio oral e intangible de la humanidad.

  3. Thermoelectric properties of SnSe compound

    Energy Technology Data Exchange (ETDEWEB)

    Guan, Xinhong [State Key Laboratory of Information Photonics and Optical Communications, Ministry of Education, Beijing University of Posts and Telecommunications, P.O. Box 72, Beijing 100876 (China); Lu, Pengfei, E-mail: photon@bupt.edu.cn [State Key Laboratory of Information Photonics and Optical Communications, Ministry of Education, Beijing University of Posts and Telecommunications, P.O. Box 72, Beijing 100876 (China); Wu, Liyuan; Han, Lihong [State Key Laboratory of Information Photonics and Optical Communications, Ministry of Education, Beijing University of Posts and Telecommunications, P.O. Box 72, Beijing 100876 (China); Liu, Gang [School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876 (China); Song, Yuxin [State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050 (China); Wang, Shumin [State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050 (China); Photonics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, 41296 Gothenburg (Sweden)

    2015-09-15

    Highlights: • The electronic and thermoelectric properties of SnSe bulk material are studied. • The ZT can reach as high as 1.87 along yy and 1.6 along zz direction at 800k. • SnSe is an indirect-band material, and SOC has little effect on the band structure. • The high ZT can be attributed to the intrinsically ultralow thermal conductivity. - Abstract: A first-principles study and Boltzmann transport theory have been performed to evaluate the electronic structure and thermoelectric properties of SnSe compound. The energy band structure and density of states are studied in detail. The electronic transport coefficients are then calculated as a function of chemical potential or temperature within the assumption of the constant relaxation time. The figure of merit ZT is obtained with the use of calculated thermoelectric properties and can reach as high as 1.87 along yy and 1.6 along zz direction at 800 K. Our theoretical result agrees well with previous experimental data.

  4. Experience with the SE in Germany

    Directory of Open Access Journals (Sweden)

    Jochem Reichert

    2008-03-01

    Full Text Available A rather significant proportion of the Societas Europaeas (the European Company, or SE formed to date have had German roots. German corporate law has been enriched by an interesting alternative which meanwhile seems to have gained momentum. This contribution focuses on SEs incorporated by German entrepreneurs and provides an interesting account concerning the use of SEs in Germany in practice, such as Allianz, Fresenius, BASF and Porsche. Has the SE been used to circumvent rigid company law provisions or is it a more flexible and effective tool, perhaps, for company mobility? The practical motives behind setting up this company form are also reflected upon. These include: the facilitation of cross-border mergers; transfer of the registered office; the ‘European’ image; a more flexible form of co-determination in large companies (reduction of the number of supervisory board members; avoidance and freezing of co-determination for medium-sized enterprises; the appeal of the one-tier system and its endangerment by German co-determination; and flat and uniform structures for company groups. The author also briefly discusses some of the problems arising from the formation of SEs in Germany. He ultimately concludes that practice has shown that it is possible to work with the legal regime of the SE in Germany, which adds a new company form to those available in that Member State.

  5. Forming Glasses from Se and Te

    Directory of Open Access Journals (Sweden)

    Pierre Lucas

    2009-10-01

    Full Text Available Despite being close neighbors on the Periodic Table, selenium and tellurium present a totally different abilities to form glasses. Se is a very good glass former, and gives rise to numerous glass compositions which are popular for their transparency in the infrared range and their stability against crystallization. These glasses can be shaped into sophisticated optical devices such as optical fibers, planar guides or lenses. Nevertheless, their transparencies are limited at about 12 μm (depending on the thickness of the optical systems due to the relatively small mass of the Se element. On the other hand, tellurium is heavier and its use in substitution for Se permits to shift the IR cutoff beyond 20 μm. However, the semimetallic nature of Te limits its glass formation ability and this glass family is known to be unstable and consequently has found application as phase change material in the Digital Versatile Disk (DVD technology. In this paper, after a review of selenide glasses and their applications, it will be shown how, in a recent past, it has been possible to stabilize tellurium glasses by introducing new elements like Ga or I in their compositions.

  6. Generation of Se-fortified broccoli as functional food: impact of Se fertilization on S metabolism.

    Science.gov (United States)

    Hsu, Fu-Chen; Wirtz, Markus; Heppel, Simon C; Bogs, Jochen; Krämer, Ute; Khan, Muhammad Sayyar; Bub, Achim; Hell, Rüdiger; Rausch, Thomas

    2011-02-01

    Selenium (Se)-fortified broccoli (Brassica oleracea var. italica) has been proposed as a functional food for cancer prevention, based on its high glucosinolate (GSL) content and capacity for Se accumulation. However, as selenate and sulphate share the initial assimilation route, Se fertilization could interfere with sulphur metabolism and plant growth. Consequently, GSL accumulation could be compromised. To evaluate these potentially adverse effects of Se fertilization, we performed a comprehensive study on sand-grown young broccoli plants (weekly selenate applications of 0.8 µmol plant(-1) via the root) and field-grown adult broccoli plants during head formation (single foliar selenate application: 25.3 or 253 µmol plant(-1) ). The results show that under these conditions, Se application does not affect plant growth, contents of cysteine, glutathione, total GSL, glucoraphanin (major aliphatic GSL) or the expression of BoMYB28 (encoding a functionally confirmed master regulator for aliphatic GSL biosynthesis). Conversely, due to the changed expression of sulphate transporters (BoSULTR1;1, 1;2, 2;1, and 2;2), sulphate and total S contents increased in the shoot of young plants while decreasing in the root. We conclude that broccoli can be fertilized with Se without reduction in GSL content, even with Se accumulation exceeding the level recommended for human consumption.

  7. Petrology of the prehistoric lavas and dyke of the Barren Island, Andaman Sea, Indian Ocean

    Indian Academy of Sciences (India)

    M A Alam; D Chandrasekharam; O Vaselli; B Capaccioni; P Manetti; P B Santo

    2004-12-01

    Although Barren Island (Andaman Sea, Indian Ocean) witnessed several volcanic eruptions during historic times, the eruptions that led to the formation of this volcanic island occurred mainly during prehistoric times. It is still active and currently in the fumarolic stage. Its volcanic evolution appears to be characterized by a constructive phase with the piling up of lava flows and scoria deposits and Strombolian activities, followed by a sudden collapse of the main cone. Deposits of a possible caldera-forming eruption were not recognized earlier. After a period of peri-calderic hydromagmatic activity, whose deposits presently mantle inner and outer caldera walls, a new phase of intracalderic Vulcanian activities took place. A prominent dyke in the SE inner side of the caldera wall was recognized. Petrographically the lava flows and dyke are similar but they differ in their chemical composition (viz., SiO2, MgO, Ni, Cr) significantly. Similarity in major, minor and trace element composition (viz., K/La, K/Nb, K/Rb, K/Ti ratios) of these rocks together with Chondrite normalized trace element (Rb, Ba, Sr, P, Zr, Ti and Nb) and REE (La, Ce, Nd and Y) patterns of the Barren Island prehistoric lava flows and dyke and low-K lavas of Sunda Arc indicates that Barren Island must have evolved from a source similar to that of Sunda Arc lavas during the Quaternary Period.

  8. Reef fish structure and distribution in a south-western Atlantic Ocean tropical island.

    Science.gov (United States)

    Pinheiro, H T; Ferreira, C E L; Joyeux, J-C; Santos, R G; Horta, P A

    2011-12-01

    The community structure of the reef fish fauna of Trindade Island, a volcanic oceanic island located 1160 km off the coast of Brazil, is described based on intensive visual censuses. Seventy-six species were encountered in 252 censuses, with mean ± S.E. of 99 ± 3 individuals and 15.7 ± 0.3 species 40 m(-2) transect. The average fish biomass, calculated from length-class estimation, was 22.1 kg 40 m(-2) transect. The species contributing most to biomass were, in decreasing order, Melichthys niger, Cephalopholis fulva, Kyphosus spp., Holocentrus adscensionis, Sparisoma amplum, Sparisoma axillare, Acanthurus bahianus and Epinephelus adscensionis. Carnivorous fishes were the largest trophic group in terms of biomass, followed by omnivores and roving herbivores. The two predominant types of reef habitat, fringing reefs built by coralline algae and rocky reefs made of volcanic boulders, showed significant differences in the biomass and the abundance of the trophic guilds. Within each habitat type, significant differences in species richness, density and biomass were detected among crest, slope and interface zones. Although similar in overall species composition to coastal reefs in Brazil, the fish fauna of Trindade Island shares certain characteristics, such as a high abundance of planktivores, with other Brazilian oceanic islands. Despite comparatively high fish biomass, including the macro-carnivorous species habitually targeted by fisheries, signs of overfishing were evident. These findings highlight the urgency for a conservation initiative for this isolated, unique and vulnerable reef system.

  9. 78 FR 35135 - Special Local Regulation; Kelley's Island Swim, Lake Erie; Kelley's Island, Lakeside, OH

    Science.gov (United States)

    2013-06-12

    ... of the Federal Register (77 FR 71531). These special local regulations will be enforced from 7 a.m... SECURITY Coast Guard 33 CFR Part 100 RIN 1625-AA08 Special Local Regulation; Kelley's Island Swim, Lake... Kelley's Island Swim from. This special local regulated area is necessary to protect swimmers from...

  10. 77 FR 33130 - Special Local Regulation; Kelley's Island Swim, Lake Erie; Kelley's Island, Lakeside, OH

    Science.gov (United States)

    2012-06-05

    ... Federal Register (73 FR 3316). Public Meeting We do not now plan to hold a public meeting. But you may... SECURITY Coast Guard 33 CFR Part 100 RIN 1625-AA08 Special Local Regulation; Kelley's Island Swim, Lake... annual Kelley's Island Swim. This special local regulated area is necessary to protect swimmers...

  11. Revisiting the Metaphor of the Island: Challenging "World Culture" from an Island Misunderstood

    Science.gov (United States)

    Rappleye, Jeremy

    2015-01-01

    This article revisits the newly "discovered" island that world culture theorists have repeatedly utilised to explain their theoretical stance, conceptual preferences and methodological approach. Yet, it seeks to (re)connect world culture with the real world by replacing their imagined atoll with a real one--the island-nation of Japan. In…

  12. CRED Gridded Bathymetry near Lisianski Island (100-001), Northwestern Hawaiian Islands

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — File 100-001b is a 60-m ASCII grid of depth data collected near Lisianski Island in the Northwestern Hawaiian Islands as of May 2003. This grid has been produced as...

  13. CRED Gridded Bathymetry near Lisianski Island and Pioneer Bank (100-002), Northwestern Hawaiian Islands

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — File 100-002b is a 60-m ASCII grid of depth data collected near Lisianski Island and Pioneer Bank in the Northwestern Hawaiian Islands as of May 2003. This grid has...

  14. CRED Gridded Bathymetry of Necker Island (100-021) in the Northwestern Hawaiian Islands

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — File 100-021b is a 60-m ASCII grid of depth data collected near Necker Island in the Northwestern Hawaiian Islands as of May 2003. This grid has been produced as...

  15. CRED Gridded Bathymetry of Nihoa Island (100-025) in the Northwestern Hawaiian Islands

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — File 100-025b is a 60-m ASCII grid of depth data collected near Nihoa Island in the Northwestern Hawaiian Islands as of May 2003. This grid has been produced as part...

  16. CRED Gridded Bathymetry near Laysan Island (100-006), Northwestern Hawaiian Islands

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — File 100-006b is a 60-m ASCII grid of depth data collected near Laysan Island in the Northwestern Hawaiian Islands as of May 2003. This grid has been produced as...

  17. Conserving the Seychelles Warbler Acrocephalus sechellensis by translocation : a transfer from Cousin Island to Aride Island

    NARCIS (Netherlands)

    Komdeur, Jan; Bullock, Ian D.; Rands, Michael R.W.

    1991-01-01

    The Seychelles Warbler was once a highly threatened single-island endemic species with a population of 26 individuals confined to Cousin Island in the inner Seychelles. Following long-term management of Cousin, the population steadily recovered to around 300-360 birds. Given the vulnerability of one

  18. Vegetation and checklist of Inaccessible Island, central South Atlantic Ocean, with notes on Nightingale Island

    Directory of Open Access Journals (Sweden)

    J. P. Roux

    1992-12-01

    Full Text Available The physiography and climate of Inaccessible and Nightingale Islands are briefly discussed. The vegetation and the major plant associations are described. Notes are given on the ecology and distribution of each taxon. Taxa newly recorded for Inaccessible Island include Agrostis goughensis, A.holgateana, A. wacei, Calamagrostis deschampsiiformis, Carex thouarsii var.  recurvata, Conyza albida, Elaphoglossum campylolepium and  Uncinia meridensis. One species, C.  albida, is alien to the Tristan group. Two native ferns Asplenium platybasis var.  subnudum and Blechnum australe were found on Nightingale Island for the first time, and the presence of introduced Malus domestica orchards was recorded. Two unidentified taxa were found that may represent new species:  Elaphoglossum sp. at Inaccessible Island and Apium sp. at both Inaccessible and Nightingale Islands. The total number of vascular plant species recorded at Inaccessible and Nightingale Islands now stands at 98 and 43, respectively, of which 26 (28% and seven (16% are introduced species. Only Airiplex plebeja and two species of Cotula occur at Nightingale Island but are absent from Inaccessible Island.

  19. Large mainland populations of South Island robins retain greater genetic diversity than offshore island refuges

    NARCIS (Netherlands)

    Boessenkool, Sanne; Taylor, Sabrina S.; Tepolt, Carolyn K.; Komdeur, Jan; Jamieson, Ian G.

    2007-01-01

    For conservation purposes islands are considered safe refuges for many species, particularly in regions where introduced predators form a major threat to the native fauna, but island populations are also known to possess low levels of genetic diversity. The New Zealand archipelago provides an ideal

  20. Stygofauna of the Canary Islands, 9. The amphipod genus Pseudoniphargus (Crustacea) in the Canary Islands

    NARCIS (Netherlands)

    Stock, Jan H.

    1988-01-01

    Pseudoniphargus was known from inland stygohabitats in the Iberian peninsula, the Azores, Madeira, N.W. Africa, and Bermuda, but not from the Canary Islands. Systematic sampling in six of the seven larger islands of the latter archipelago has revealed the presence of the genus in Tenerife (4 species

  1. ZnCdSe/ZnSe quantum-dot semiconductor optical amplifiers

    Science.gov (United States)

    Al-Mossawi, Muwaffaq Abdullah

    2017-02-01

    Gain of CdZnSe quantum dot (QD) semiconductor optical amplifiers (SOAs) is studied theoretically using non-Markovian gain model including many-body effects. The calculations are done at three mole fractions. Spontaneous emission and noise figure of the amplifier are studied. The effect of shot noise is included. High gain, polarization independence, and low noise figure are characterize these QD-SOAs. A multi-mode gain appears for Zn0.69Cd0.31Se structure while the structure Zn0.6Cd0.4Se give a low noise.

  2. Optical nonlinearities in GaSe and InSe crystals upon laser excitation

    Science.gov (United States)

    Kyazym-zade, A. G.; Salmanov, V. M.; Guseinov, A. G.; Gasanova, L. G.; Mamedov, R. M.

    2014-04-01

    The nonlinear absorption of light and its temporal evolution in the vicinity of exciton resonance in layered GaSe and InSe crystals under high optical excitation have been experimentally investigated. The decisive factor for the observed temporal dependence of the absorption coefficient and its dependence on the excitation intensity is screening excitons by nonequilibrium-carrier plasma. It is shown that the increase in the transmittance in the absorption-band edge in GaSe with a simultaneous blue shift of the band edge is caused by filling the energy bands under high optical excitation.

  3. Runaway electrons and magnetic island confinement

    Science.gov (United States)

    Boozer, Allen H.

    2016-08-01

    The breakup of magnetic surfaces is a central feature of ITER planning for the avoidance of damage due to runaway electrons. Rapid thermal quenches, which lead to large accelerating voltages, are thought to be due to magnetic surface breakup. Impurity injection to avoid and to mitigate both halo and runaway electron currents utilizes massive gas injection or shattered pellets. The actual deposition is away from the plasma center, and the breakup of magnetic surfaces is thought to spread the effects of the impurities across the plasma cross section. The breakup of magnetic surfaces would prevent runaway electrons from reaching relativistic energies were it not for the persistence of non-intercepting flux tubes. These are tubes of magnetic field lines that do not intercept the walls. In simulations and in magnetic field models, non-intercepting flux tubes are found to persist near the magnetic axis and in the cores of magnetic islands even when a large scale magnetic surface breakup occurs. As long as a few magnetic surfaces reform before all of the non-intercepting flux tubes dissipate, energetic electrons confined and accelerated in these flux tubes can serve as the seed electrons for a transfer of the overall plasma current from thermal to relativistic carriers. The acceleration of electrons is particularly strong because of the sudden changes in the poloidal flux that naturally occur in a rapid magnetic relaxation. The physics of magnetic islands as non-intercepting flux tubes is studied. Expressions are derived for (1) the size of islands required to confine energetic runaway electrons, (2) the accelerating electric field in an island, (3) the increase or reduction in the size of an island by the runaway electron current, (4) the approximate magnitude of the runaway current in an island, and (5) the time scale for the evolution of an island.

  4. Recent hydrogeologic study of the Vis island

    Directory of Open Access Journals (Sweden)

    Janislav Kapelj

    2002-12-01

    Full Text Available The Vis Island belongs to the group of the Middle Dalmatian islands. It comprises an area of about 90.2 km2. Morphologically, three belts of highlands and two depressions with karst poljes are significant. The highest point on the island is Hum with 587 m a.s.l. theisland’s water supply is organized from the water-supply station “Korita”, situated in the central part of island, in tectonically formed depression. There are two additional capturedobjects: the well K-1 above the Komiža town and the spring “Pizdica”. The most important hydrogeological role on the island have two hydrogeological barriers, one in the KomižaBay, completely made of impermeable igneous and clastic rocks, and another one, the recently recognized relative barrier in the area of Dra~evo, Plisko and Velo polje. Since the island karst aquifer is in permanent dynamic relation with seawater, classical geologic,structural and hydrogeologic investigations have been performed with application of hydrogeochemical methods taking into account the natural chemical tracer content of groundwater and its variations in different hydrologic and vegetation conditions. Precipitationregime is very unfavorable with regard to the recharging of island’s aquifer, because dry periods are usually very long. During the summer tourist season, when the number of inhabitants and fresh water consumption considerably increase, amounts of island’sgroundwater suitable for water supply and irrigation rapidly decrease. Sometimes, insufficient quantity of fresh water on the Vis Island causes restrictions. Concerning the development of tourist potential and the present agricultural activities, summer lack ofwater is a serious restrictive factor. Some results of the performed hydrogeological study, important as a basis for island’s fresh water potential assessment, will be presented.

  5. Tools for sustainability assessment in island socio-ecological systems: an application to the Canary Islands

    Directory of Open Access Journals (Sweden)

    Isabel Banos-González

    2016-05-01

    Full Text Available An integral dynamic model, in combination with other methods (indicators, policy and scenario analysis, is presented as a tool for sustainability assessment in island socio-ecological systems (SES. The Fuerteventura sustainability model (FSM, tested for the 1996-2011, allows a better understanding of the dynamic interactions between sustainability indicators and other factors of this island. The FSM was first applied to analyse the vulnerability of this island to climate change for the 2012-2025 period; results point to the need for urgent measures to mitigate its effects on some of the analysed indicators. A set of policy measures was then assessed from the behaviour of nine indicators and their sustainability thresholds. Finally, the FSM facilitated the development of a dynamic model of the island of El Hierro, extrapolating the features common to both SES. We propose this to be a useful tool for the quantitative sustainability assessment and the management of real island socio-ecological systems

  6. 77Se nuclear magnetic resonance of topological insulator Bi2Se3

    Science.gov (United States)

    Georgieva, Nataliya M.; Rybicki, Damian; Guehne, Robin; Williams, Grant V. M.; Chong, Shen V.; Kadowaki, Kazuo; Garate, Ion; Haase, Jürgen

    2016-05-01

    Topological insulators constitute a new class of materials with an energy gap in the bulk and peculiar metallic states on the surface. We report on new features resulting from the bulk electronic structure, based on a comprehensive nuclear magnetic resonance (NMR) study of 77Se on Bi2Se3 and Cu0.15Bi2Se3 single crystals. First, we find two resonance lines and show that they originate from the two inequivalent Se lattice sites. Second, we observe unusual field-independent linewidths and attribute them to an unexpectedly strong internuclear coupling mediated by bulk electrons. In order to support this interpretation, we present a model calculation of the indirect internuclear coupling and show that the Bloembergen-Rowland coupling is much stronger than the Ruderman-Kittel-Kasuya-Yosida coupling. Our results call for a revision of earlier NMR studies and add information concerning the bulk electronic properties.

  7. Highly luminescent CdSe/ZnSe core-shell quantum dots of one-pot preparation in octadecene

    NARCIS (Netherlands)

    Zeng, Q.; Kong, X.; Zhang, Y.; Zhang, H.

    2008-01-01

    CdSe/ZnSe core-shell quantum dots were synthesized using a new one-pot procedure where the core was prepared in octadecene. A ZnSe shell around a CdSe nanoparticle was formed by the reaction of selenium-richness on the surfaces of CdSe nanoparticles with Zn2+ from the injected zinc stearate precurso

  8. The sediments of lake on the Ardley Island, Antarctica:Identification of penguin-dropping soil Sun Liguang

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    During CHINARE-15(Dec. 1998 - Mar. 1999), a lake core 67. 5 cm in length, was sampled in Y2 lake, which is located on the Ardley Island, Antarctica.The concentrations of some chemical elements in Y2 lake sediments were analyzed.According to comparative research on elementary characters of sediments in Antarctic West Lake, fresh penguin dropping as well as guano soil on the Ardley Island and Pacific Island in South China Sea, it presents that the Y2 lake sediments were ameliorated by penguin dropping. The result of element cluster analysis shows that the type elements in the sediment impacted by penguin dropping include Sr, F, S,P,Ca,Se,Cu, Zn and Ba. This can provide a base for further interpreting the climatic and environmental event recorded in the sediment.

  9. Pintuco se internacionaliza en el mercado andino.

    Directory of Open Access Journals (Sweden)

    Carlos Enrique Ramírez R.

    2004-01-01

    Full Text Available La historia de la internacionalización de Pintuco está presentada en este trabajo. Es importante resaltar la valiosa información sobre el mercado mundial de pinturas lo cual despierta el interés del lector al mostrar el tamaño del mercado y la importancia económica del mismo. De igual forma, la introducción es muy expedita al señalar cuál es la tendencia de dicho mercado, pues con esto se puede hacer una idea de hacia dónde deberá ir Pintuco y cuáles serán sus principales retos a superar. Luego de dar un vistazo general de lo que son las pinturas y su impacto económico, el artículo continúa con la historia del Grupo Inversiones Mundial (GIM, ente económico que ha triunfado gracias a la tenacidad de sus directivos desde 1921. La estrategia utilizada por la empresa colombiana es explicada a través de los ejemplos de cómo empezó y se desarrolló en Venezuela y Ecuador, principalmente. Y es en esto, en lo que precisamente radica lo más importante del trabajo pues sirve como motivación y como ejemplo a seguir. Las empresas colombianas como Pintuco han entendido que una de las formas de amoldarse a las nuevas tendencias del mundo empresarial es la de competir con calidad, pero no sólo en su propio mercado, sino también en el mercado de origen de su competencia. Hoy en día las fronteras son cada vez más invisibles y eso, más que una amenaza, debería ser un atractivo.

  10. Temperature dependence of excitonic transition in ZnSe/ZnCdSe quantum wells

    Institute of Scientific and Technical Information of China (English)

    GUO Zi-zheng; LIANG Xi-xia; BAN Shi-liang

    2005-01-01

    A theoretical calculation for the temperature dependence of the excitonic transition in ZnSe/ZnCdSe quantum wells is performed. The exciton binding energy is calculated with a variational technique by considering the temperature-dependence parameters. Our results show that the exciton binding energy reduces linearly with temperature increasing. We find that the strain due to lattice mismatch and differential thermal expansion decreases with the temperature increasing.

  11. Hjem og arbejde for hjemløse og arbejdsløse EU medborgere

    DEFF Research Database (Denmark)

    Ravnbøl, Camilla Ida

    2015-01-01

    belyses hvor meget arbejde og hjem betyder for denne gruppe af formelt hjemløse og arbejdsløse EU medborgere. Udgangspunktet er etnografisk materiale, som viser roma kvinder og mænds erfaringer med at opretholde hjemmet i Rumænien, skabe sig et trygt hjem på gaden samt at søge efter arbejde og arbejde med...

  12. Patrimonio cultural: lo intangible se hace tangible

    OpenAIRE

    William Heredia Orjuela

    2004-01-01

    Se presentan tres reflexiones a manera de ensayo, elaboradas por estudiantes de vii semestre de la Facultad de Administración de Empresas Turísticas y Hoteleras. El tema central que engloba los escritos es el de la responsabilidad frente al patrimonio cultural, su valoración y su relación con el turismo. En el ensayo La protección del patrimonio cultural como reflejo del ser humano, la estudiante cecilia hinosTrosa hace un llamado de atención frente al problema del tráfico ilícito de bienes q...

  13. Schilddrüse und Schwangerschaft

    Directory of Open Access Journals (Sweden)

    Zettinig G

    2009-01-01

    Full Text Available Kinderwunsch, Schwangerschaft und die Zeit nach einer Geburt sind besondere Lebensabschnitte bei Patientinnen mit Schilddrüsenerkrankungen. Bei jungen Frauen sind Autoimmunerkrankungen der Schilddrüse, die Einfluss auf die Fruchtbarkeit und die intellektuelle und körperliche Entwicklung des Fetus haben können, häufig. Schilddrüsenerkrankungen können sich in dieser Lebensphase auch erstmals manifestieren; besondere Beachtung verdient die Wechselwirkung von β-HCG mit dem TSH-Rezeptor. Diese Übersicht behandelt das aktuelle Management von Patientinnen mit Schilddrüsenerkrankungen bei Kinderwunsch, in der Schwangerschaft und Postpartalperiode.

  14. Leishmaniasis visceral: senderos que confluyen, se bifurcan

    OpenAIRE

    Oscar Daniel Salomón; Andrea Verónica Mastrángelo; María Soledad Santini; Silvina Ruvinsky; Tomás Orduna; Angel Sinagra; Concepción Luna; Adelina Riarte; Natalia Casas; Paola Amiotti

    2012-01-01

    La leishmaniasis visceral urbana es una zoonosis emergente en Argentina. En América es producida por Leishmania infantum, con el perro como reservorio principal e insectos flebotomíneos como vectores. En este artículo se presenta el conocimiento acumulado a partir de su emergencia y dispersión en el país, por los referentes del Programa Nacional de Leishmaniasis, en el diagnóstico clínico y de laboratorio, tratamiento, biología de vectores, manejo de reservorio, y el conflicto generado con la...

  15. Conduction band offset determination between strained CdSe and ZnSe layers using DLTS

    Science.gov (United States)

    Rangel-Kuoppa, Victor-Tapio

    2013-12-01

    The conduction band offset between strained CdSe layers embedded in unintentionally n-type doped ZnSe is measured and reported. Two samples, consisting of thirty Ultra Thin Quantum Wells (UTQWs) of CdSe embedded in ZnSe, grown by Atomic Layer Epitaxy, are used for this study. The thicknesses of the UTQWs are one and three monolayers (MLs) in each sample, respectively. As expected, the sample with one ML UTQWs does not show any energy level in the UTQWs due to the small thickness of the UTQWs, while the thickness of the sample with 3 ML UTQWs is large enough to form an energy level inside the UTQWs. This energy level appears as a majority trap with an activation energy of 223.58 ± 9.54 meV. This corresponds to UTQWs with barrier heights (the conduction band offset) between 742 meV and 784 meV. These values suggest that the band gap misfit between strained CdSe and ZnSe is around 70.5 to 74 % in the conduction band.

  16. Conduction band offset determination between strained CdSe and ZnSe layers using DLTS

    Energy Technology Data Exchange (ETDEWEB)

    Rangel-Kuoppa, Victor-Tapio [Institute of Semiconductor and Solid State Physics, Johannes Kepler Universität, A-4040 Linz (Austria)

    2013-12-04

    The conduction band offset between strained CdSe layers embedded in unintentionally n-type doped ZnSe is measured and reported. Two samples, consisting of thirty Ultra Thin Quantum Wells (UTQWs) of CdSe embedded in ZnSe, grown by Atomic Layer Epitaxy, are used for this study. The thicknesses of the UTQWs are one and three monolayers (MLs) in each sample, respectively. As expected, the sample with one ML UTQWs does not show any energy level in the UTQWs due to the small thickness of the UTQWs, while the thickness of the sample with 3 ML UTQWs is large enough to form an energy level inside the UTQWs. This energy level appears as a majority trap with an activation energy of 223.58 ± 9.54 meV. This corresponds to UTQWs with barrier heights (the conduction band offset) between 742 meV and 784 meV. These values suggest that the band gap misfit between strained CdSe and ZnSe is around 70.5 to 74 % in the conduction band.

  17. Island Movements: Thinking with the Archipelago

    Directory of Open Access Journals (Sweden)

    Jonathan Pugh

    2013-05-01

    Full Text Available Whether in Homer or Plato, Shakespeare or Huxley, throughout history, thinking about islands has shaped how we think about human nature and our place in the world. However, to date archipelagos have received far less attention. This is problematic because we live, increasingly, in a world of island-island movements and not static forms. Not only in the more obvious cases of the Caribbean, Hawaii or the Philippines but, as Stratford et al (2011 say, many ‘continental forms’ like Canada and Australia are in fact archipelagos composed of thousands of island movements. To this list we can add more manufactured archipelagos: wind turbine arrays, industrial oil and military constellations. The key question therefore arises: what does it mean to think with the archipelago? This paper argues firstly that archipelagic thinking denaturalizes the conceptual basis of space and place, and therefore engages ‘the spatial turn’ presently sweeping the social sciences and humanities. Secondly, such thinking highlights the trope of what I call ‘metamorphosis’, of the adaptation and transformation of material, cultural and political practices through island movements. In both cases, I argue that thinking with the archipelago requires an important shift in how we frame analysis and engagement.

  18. Comparison of fishery-independent methods for sampling Main Hawaiian Islands Bottomfish assemblages (SE1107, EK60)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Optical, active acoustics, and research fishing data on bottomfish abundance and biomass were collected over predetermined grids to compare results of methodologies....

  19. Comparison of fishery-independent methods for sampling Main Hawaiian Islands Bottomfish assemblages (SE1302, EK60)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Optical, active acoustics, and research fishing data on bottomfish abundance and biomass were collected over predetermined grids to compare results of methodologies....

  20. Marine Resource Survey in waters surrounding Guam and the Commonwealth of the Northern Mariana Islands (SE1002, EK60)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The goals of the cruise were to collect a variety of data to assess the status of marine resources in waters surrounding Guam and CNMI. Marine resource habitats were...

  1. Comparison of fishery-independent methods for sampling Main Hawaiian Islands Bottomfish assemblages (SE1306_AfterCalib, EK60)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Optical, active acoustics, and research fishing data on bottomfish abundance and biomass were collected over predetermined grids to compare results of methodologies....

  2. Comparison of fishery-independent methods for sampling Main Hawaiian Islands Bottomfish assemblages (SE1102L1, EK60)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Optical, active acoustics, and research fishing data on bottomfish abundance and biomass were collected over predetermined grids to compare results of methodologies....

  3. Comparison of fishery-independent methods for sampling Main Hawaiian Islands Bottomfish assemblages (SE1306_BeforeCalib, EK60)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Optical, active acoustics, and research fishing data on bottomfish abundance and biomass were collected over predetermined grids to compare results of methodologies....

  4. Mesophotic coral environment monitoring and habitat surveys at the Main Hawaiian Island Chain (SE0807, EK60)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The goals of the cruise were to collect a variety of data to assess the status of mesophotic corals in the Auau Channel, off the west coast of Maui. Camera surveys...

  5. Se il filosofo ha un compito

    Directory of Open Access Journals (Sweden)

    Carmine Di Martino

    2011-01-01

    Full Text Available Il testo muove da una ricognizione dello “stile” complessivo dell’interrogazione filosofica contemporanea: stile decostruttivo, che si risolve in un’illustrazione del limite istitutivo e costitutivo di ogni dire filosofico (e non solo filosofico. In un secondo tempo del suo intervento, l’autore si chiede se una tale comprensione, puramente “negativa”, di quel limite e della validità della parola che ne discende, non sia essa stessa ideologica, e se non sia possibile frequentare una definizione positiva di tale limite, e una possibilità non soltanto autodecostruttiva della parola filosofica “dopo” Nietzsche, Heidegger, Derrida.

  6. Resepsies van Catullus se Carmen XLIX

    Directory of Open Access Journals (Sweden)

    J. Swanepoel

    1984-05-01

    Full Text Available Gaius Valerius Catullus (c. 84-c. 54 v.C., die Romeinse digter wat veral bekend is vir sy verse aan sy geliefde Lesbia, het benewens liefdesgedigte ook ’n hele aantal verse geskryf waarin van sy lydgenote figureer. Hierdie gedigie wat aan spesifieke persone gerig is, is wyd uiteenlopend en die toon en strekking daarvan wissel van toegeneentheid en liefde enersyds (vgl. Carmen IX tot felie invektief (Carmina CVIII, XCIII en spot (Carmen LXXXIV andersyds. Die leser kan gewoonlik maklik vasstel of hy in ’n gedig met vriend of vyand te doen liet. Maar daar is een uitsondering, en dit is Catullus se gedig aan die Romeinse staatsman, retor en skrywer, Marcus Tullius Cicero. Hierdie gedig, wat soos die meeste van Catullus se gedigte heel kort en kragtig is, is deur die eeue op uiteenlopende en botsende wyses geinterpreteer. Enersyds word dit beskou as ’n opregte dankbetuiging en lofprysing aan Cicero, terwyl ander lesers dit weer sien as ’n gedig wat ironies bedoel is.

  7. Leishmaniasis visceral: senderos que confluyen, se bifurcan

    Directory of Open Access Journals (Sweden)

    Oscar Daniel Salomón

    2012-01-01

    Full Text Available La leishmaniasis visceral urbana es una zoonosis emergente en Argentina. En América es producida por Leishmania infantum, con el perro como reservorio principal e insectos flebotomíneos como vectores. En este artículo se presenta el conocimiento acumulado a partir de su emergencia y dispersión en el país, por los referentes del Programa Nacional de Leishmaniasis, en el diagnóstico clínico y de laboratorio, tratamiento, biología de vectores, manejo de reservorio, y el conflicto generado con las acciones recomendadas en relación con los perros infectados. La detección temprana y el tratamiento precoz, con estrategias descentralizadas y horizontales, contribuirán a disminuir la morbimortalidad asociada a la leishmaniasis visceral. El control de su transmisión y dispersión requiere de un manejo ambiental integral y la tenencia responsable de perros. Se discuten los intereses y discursos en conflicto generados por la leishmaniasis visceral en el marco de la relación humano-perro, proponiendo la búsqueda de un discurso consensuado de riesgo.

  8. Lo que se debe a las cimentaciones

    Directory of Open Access Journals (Sweden)

    Oroviogoicoechea, Alberto

    1975-05-01

    Full Text Available This article describes: the problems that arise when the foundations has to act on soils with low consistency or when very narrow tolerances have to be met; the origin of the above mentioned problems; the requirements that are not really necessary, with suitable examples; the absolute and relative admissible magnitudes of differential settlements in concrete structures, walls, partitions and metal structures; the tolerances for mechanical installations; recommendations for projects and a table that sums up the proposed tolerances for relative foundations.En el artículo se describen: los problemas que surgen cuando la cimentación ha de actuar sobre terrenos poco consistentes o cuando se quieren cumplir tolerancias muy estrechas; de dónde provienen dichos problemas; las exigencias que no son realmente necesarias, con ejemplos apropiados; las magnitudes absolutas y relativas admisibles de asientos diferenciales, en estructuras de hormigón, muros, tabiques y estructuras metálicas; las tolerancias para instalaciones mecánicas; recomendaciones para proyecto, y una tabla que recoge las tolerancias propuestas para asientos relativos.

  9. Cuando la ciencia se adorna de colores

    Directory of Open Access Journals (Sweden)

    César Arana

    2013-05-01

    Full Text Available La conservación de la biodiversidad ha dejado de ser un tema de discusión únicamente en círculos científicos e intelectuales, para convertirse en un tema de noticia diaria. Esto ha llevado entre otras cosas a la creación de instrumentos de información para todos los agentes sociales de las áreas geográficas donde se pretende establecer proyectos de explotación de recursos, en particular para las comunidades campesinas e indígenas. La única manera de apreciar y valorar un recurso es conociéndolo, a pesar de ello la información de nuestra mayor riqueza, la biodiversidad, sólo se ha venido restringiendo a las comunicaciones especializadas que circulan en la comunidad científica, dejando de lado a los agentes sociales y políticos de los cuales dependen las decisiones sobre la explotación sustentable de los recursos. Es por esto que publicaciones como la comentada aquí tienen mucha importancia, porque teniendo como principal objetivo la divulgación, no dejan de ser importante fuente de información y herramienta de trabajo para futuros estudios, así como información básica para proyectos de manejo de recursos naturales y ecoturismo.

  10. Bioclimatic and physical characterization of the world's islands.

    Science.gov (United States)

    Weigelt, Patrick; Jetz, Walter; Kreft, Holger

    2013-09-17

    The Earth's islands harbor a distinct, yet highly threatened, biological and cultural diversity that has been shaped by geographic isolation and unique environments. Island systems are key natural laboratories for testing theory in ecology and evolution. However, despite their potential usefulness for research, a quantitative description of island environments and an environmental classification are still lacking. Here, we prepare a standardized dataset and perform a comprehensive global environmental characterization for 17,883 of the world's marine islands >1 km(2) (∼98% of total island area). We consider area, temperature, precipitation, seasonality in temperature and precipitation, past climate change velocity, elevation, isolation, and past connectivity--key island characteristics and drivers of ecosystem processes. We find that islands are significantly cooler, wetter, and less seasonal than mainlands. Constrained by their limited area, they show less elevational heterogeneity. Wet temperate climates are more prevalent on islands, whereas desert climates are comparatively rare. We use ordination and clustering to characterize islands in multidimensional environmental space and to delimit island ecoregions, which provides unique insights into the environmental configuration and diversity of the world's islands. Combining ordination and classification together with global environmental data in a common framework opens up avenues for a more integrative use of islands in biogeography, macroecology, and conservation. To showcase possible applications of the presented data, we predict vascular plant species richness for all 17,883 islands based on statistically derived environment-richness relationships.

  11. Escuela para señoritas, Inglaterra

    Directory of Open Access Journals (Sweden)

    Stillman y Eastwlck-Field, Arquitectos

    1963-02-01

    Full Text Available The object was to design part of a new building which had been seriously damaged during the war, so that the old and new parts would blend into a pleasant whole, with a capacity for 600 girls. The new designs avoid the glass box style of school buildings, and glass walls have been adopted only on the ground floor, thus giving an impression of light and airiness to what used to be a partial basement. Classrooms have been designed in a simple manner, and give the impression of conventional rooms. Simple lines and materials have been chosen throughout. Strong contrasts in the external finish have been avoided, and colours provide a relaxing background to the intensive activities of the students. A constructional feature is the use of prefabricated concrete joists and supports. Outer walls consist of brick panels filling in the space between the visible concrete framework. Ceilings are of insulating boards, and the floors are covered with linoleum. Special attention has been devoted to the hall. In this case the roof is of white gypsum, and the only features are the grills covering the fluorescent lighting. The walls of this hall are of glass, and are covered with heavy velvet curtains. A balcony with hardwood posts adds a simple and friendly feature to the building. The furniture and drapery have been carefully chosen. Camden school has a rigid tradition of individualism and fine education, and the new building has succeeded in maintaining the exclusive quality of the older parts, as well as offering an overall impression of up to date construction.El problema consistía en proyectar un nuevo núcleo para un edificio que había sido seriamente bombardeado durante la guerra, de tal modo que las partes antiguas y nuevas formasen un conjunto agradable y con capacidad para más de 600 chicas. En la nueva construcción se ha evitado el carácter de «cajas de cristal» de las nuevas escuelas ordinarias y se han empleado muros de cristal solamente en la

  12. DARWIN Y LA PARADOJA DE LAS ISLAS VACÍAS Darwin and the Empty Island Paradox

    Directory of Open Access Journals (Sweden)

    JUAN FELIPE BLANCO

    Full Text Available Aunque se conoce el interés y fascinación de Darwin por la naturaleza marina a través de sus tratados sobre arrecifes coralinos, islas oceánicas y balanos, poco se comenta sobre los múltiples ejemplos dulceacuícolas que él utilizó para plantear la -teoría de la migración- dentro de -El origen-. Ésta plantea que la fauna y la flora se -dispersan- desde los continentes hacia las islas oceánicas. Sin embargo, en la islas muy alejadas de los centros de origen la probabilidad de colonización es muy baja y por lo tanto solo se encuentra una fracción de la biota continental, pudiendo considerarse en algunos casos -vacías-. Aunque las corrientes de agua de dichas islas también se consideran -vacías-, Darwin propuso un mecanismo para explicar la presencia de peces -dulceacuícolas- en las mismas, y por lo tanto no podrían considerarse -vacías-, lo cual plantea una paradoja. El mecanismo planteado por él coincide con el ciclo de vida conocido actualmente como diádromo en el cual los individuos de muchas especies de peces, camarones y gasterópodos requieren de aguas marinas y dulces para completar su desarrollo. La diadromía es una convergencia evolutiva que apareció en diferentes linajes a partir de ancestros tanto marinos como dulceacuícolas. En este ensayo se discute la evolución de la fauna dulceacuícola insular, sus implicaciones ecológicas y evolutivas, y algunos modelos experimentales. Finalmente, se discute sobre los impactos de las represas en islas tropicales y subtropicales sobre las especies diádromas.Although Darwin's fascination and interest on marine nature are well known due to his treatises about coral reefs, oceanic islands, and barnacles, little is commented about the many -freshwater- examples that he provided for supporting -The Migration Theory- in his book -The Origin of the Species-. According to this theory, faunas and floras disperse from continents to oceanic islands. However, those islands located at

  13. Cervical cancer screening in the Faroe Islands

    DEFF Research Database (Denmark)

    Hammer, Turið; Lynge, Elsebeth; Djurhuus, Gisela W;

    2014-01-01

    Background. The Faroe Islands have had nationally organised cervical cancer screening since 1995. Women aged 25-60 years are invited every third year. Participation is free of charge. Although several European overviews on cervical screening are available, none have included the Faroe Islands. Our...... aim was to provide the first description of cervical cancer screening, and to determine the screening history of women diagnosed with cervical cancer in the Faroe Islands. Material and methods. Screening data from 1996 to 2012 were obtained from the Diagnostic Centre at the National Hospital...... 1999. At present, 7.0% of samples have abnormal cytology. Of all ASCUS samples, 76-95% were tested for HPV. A total of 58% of women diagnosed with cervical cancer did not participate in screening prior to their diagnosis, and 32% had normal cytology in the previous four years. Conclusion. Despite...

  14. Interconnecting Gold Islands with DNA Origami Nanotubes

    Science.gov (United States)

    Ding, Baoquan; Wu, Hao; Xu, Wei; Zhao, Zhao; Liu, Yan; Yu, Hongbin; Yan, Hao

    2012-01-01

    Scaffolded DNA origami has recently emerged as a versatile, programmable method to fold DNA into arbitrarily shaped nanostructures that are spatially addressable, with sub-10 nm resolution. Toward functional DNA nanotechnology, one of the key challenges is to integrate the bottom up self-assembly of DNA origami with the top-down lithographic methods used to generate surface patterning. In this report we demonstrate that fixed length DNA origami nanotubes, modified with multiple thiol groups near both ends, can be used to connect surface patterned gold islands (tens of nanometers in diameter) fabricated by electron beam lithography (EBL). Atomic force microscopic imaging verified that the DNA origami nanotubes can be efficiently aligned between gold islands with various inter-island distances and relative locations. This development represents progress toward the goal of bridging bottom up and top down assembly approaches. PMID:21070012

  15. Control and Operation of Islanded Distribution System

    DEFF Research Database (Denmark)

    Mahat, Pukar

    to the transmission grid. Hence, grid reconnection detection algorithms have been proposed to detect when an islanded distribution system is reconnected back to the transmission grid. One of the grid reconnection detection algorithms is based on rate of change of speed over power. Another one is based on frequency......A yearly demand growth of less than 3%, concern about the environment, and various benefits of onsite generation have all resulted in a significant increase in penetration of dispersed and distributed generation (DG) in many distribution systems. This has also resulted in some power system...... operational challenges. But, on the other hand, it has also opened up some opportunities. One opportunity/challenge is an islanded operation of a distribution system with DG unit(s). Islanding is a situation in which a distribution system becomes electrically isolated from the remainder of the power system...

  16. [The bathymetry of Coco's Island, Costa Rica].

    Science.gov (United States)

    Lizano, O G

    2001-12-01

    The bathymetry of Coco's Island (UNESCO Natural and Cultural World Patrimony), located approximately 500 km from the Pacific coast of Costa Rica, is not well known. It has a high marine biodiversity and also represents a meeting site for many species traveling throughout the Pacific Ocean. The insular shelf is irregular in extension and also in bathymetric features. The northeast limit is defined by the 109.8-128.1 m contours (60-70 fathoms) while the 183 m contour (100 fathoms) practically defines the rest of the island, from which the depth gradient is steep. The maximum extension is to the northeast with a longitude of 13 km. In this context the present limits of the marine park (5 km), are insufficient to protect the whole insular shelf. Current regulation should be modified to prevent fishing activities less than 15 km from the Island.

  17. Different shades of green on small islands

    Directory of Open Access Journals (Sweden)

    Teresa Tiago

    2016-11-01

    Full Text Available Many small islands exist as tourism destinations worldwide. In the 1990s, the growth of environmental consciousness led some small islands to question their mass tourism offers and to refocus on more sustainable propositions. However, it remains unclear whether hospitality firms see these sustainability related efforts as drivers of success and whether tourists value this dimension when choosing or recommending a destination. This study chose a small island destination to address these questions using data covering firm and tourism perceptions of green products. The results show that tourists tend to value green efforts with different intensities, corresponding to three segments: Light Green, Green, and Super Green. These findings should help hotels adjust their communication strategies and develop new services. Further, destination marketing organizations can devise a consistent destination strategy, integrating all stakeholders by including their most valued concepts.

  18. The floating (pathogenicity) island: a genomic dessert

    Science.gov (United States)

    Novick, Richard P.; Ram, Geeta

    2015-01-01

    Among the prokaryotic genomic islands (GIs) involved in horizontal gene transfer (HGT) are the classical pathogenicity islands, including the integrative and conjugative elements (ICEs), the gene-transfer agents (GTAs), and the staphylococcal pathogenicity islands (SaPIs), the primary focus of this review. While the ICEs and GTAs mediate HGT autonomously, the SaPIs are dependent on specific phages. The ICEs transfer primarily their own DNA the GTAs exclusively unlinked host DNA and the SaPIs combine the capabilities of both. Thus the SaPIs derive their importance from the genes they carry (their genetic cargo) and the genes they move. They act not only as versatile high frequency mobilizers, but also as mediators of phage interference, and consequently are major benefactors of their host bacteria. PMID:26744223

  19. Fabrication and characterization of CuInSe{sub 2} thin films from In{sub 2}Se{sub 3} and Cu{sub 2}Se precursors

    Energy Technology Data Exchange (ETDEWEB)

    Song, Jin Soo [Korea Inst. of Energy and Resources, Daeduk (Korea, Republic of); Huh, Gyung Jae; Kwon, Se Han; Ahn, Byung Tae [Korea Advanced Energy Research Inst., Daeduk-Danji (Korea, Republic of). Korea Nuclear Safety Center

    1995-12-01

    CuInSe{sub 2} this films as a light absorber layer were fabricated by vacuum evaporation using In{sub 2}Se{sub 3} and Cu{sub 2}Se precursors and their properties were analyzed. Indium selenide films of 0.5{mu}m thickness were first deposited by vacuum evaporation of In{sub 2}Se{sub 3} on a Corn ing 7059 glass substrate. The films deposited at susceptor temperature of 400 degree showed a flat surface morphology with densely packed grain structure. CuInSe{sub 2} films directly formed by evaporating Cu{sub 2}Se in the pre-deposited In{sub 2}Se{sub 2} films also showed a very flat surface when the susceptor temperature was 700 degree. Cu{sub 2}Se, a second phase in the CuInSe{sub 2} film, was removed by evaporating additional In{sub 2}Se{sub 3} on the CuInSe{sub 2} film at 700 degree. The grain size of 1.2{mu}m thick CuInSe{sub 2} film was about 2{mu}m and the film had a (112) preferred orientation. As the amount of deposited In{sub 2}Se{sub 3} increased, the electrical resistivity of CuInSe{sub 2} films increased because of the decrease of hole concentration. But the optical band gap was almost constant at the value of 1.04 eV. The CuInSe{sub 2} film grown in a Mo/glass substrate had a similar smooth microstructure compared to that on a glass substrate. A solar cell with ZnO/CdS/CuInSe{sub 2}/Mo structure may be realized based on the above CuInSe{sub 2} films. (author). 16 refs., 11 figs.

  20. Vegetation assessment of forests of Pagan Island, Commonwealth of the Northern Mariana Islands

    Science.gov (United States)

    Pratt, Linda W.

    2011-01-01

    As part of the Marianas Expedition Wildlife Surveys-2010, the forest vegetation of the island of Pagan, Commonwealth of the Northern Mariana Islands (CNMI), was sampled with a series of systematic plots along 13 transects established for monitoring forest bird populations. Shrubland and grassland were also sampled in the northern half of the island. Data collected were woody plant density, tree diameter at breast height, woody plant density in height classes below 2 m, and ground cover measured with the point-intercept method. Coconut forests (Cocos nucifera) were generally found to have low native tree diversity, little regeneration of trees and shrubs in the forest understory, and little live ground cover. The sole exception was a coconut-dominated forest of the northeast side of the island that exhibited high native tree diversity and a large number of young native trees in the understory. Ironwood (Casuarina equisetifolia) forests on the northern half of the island were nearly monocultures with almost no trees other than ironwood in vegetation plots, few woody plants in the understory, and low ground cover dominated by native ferns. Mixed native forests of both northern and southern sections of the island had a diversity of native tree species in both the canopy and the sparse understory. Ground cover of native forests in the north had a mix of native and alien species, but that of the southern half of the island was dominated by native ferns and woody plants.

  1. Vacancy defects in epitaxial thin film CuGaSe2 and CuInSe2

    OpenAIRE

    Korhonen, E.; Kuitunen, K.; Tuomisto, Filip; Urbaniak, A.; Igalson, M.; Larsen, J.; Gutay, L; Siebentritt, S; Tomm, Y.

    2012-01-01

    Epitaxial thin film CuGaSe2 and CuInSe2 samples grown on GaAs substrates with varying [Cu]/[Ga,In] ratios were studied using positron annihilation Doppler-broadening spectroscopy and were compared to bulk crystals. We find both Cu monovacancies and Cu-Se divacancies in CuInSe2, whereas, in CuGaSe2, the only observed vacancy defect is the Cu-Se divacancy. Peer reviewed

  2. Assesing Geographic Isolation of the Galapagos Islands

    Science.gov (United States)

    Orellana, D.; Smith, F.

    2016-06-01

    The Galapagos Archipelago is one of the most important ecological spots in the planet due its unique biodiversity, active geology, and relatively well-preserved ecosystems. These characteristics are strongly based on the geographical isolation of the islands. On the one hand this isolation allowed the evolution processes that gave the islands their international fame and on the other hand it kept them from major human impacts that affected the vast majority of the Earth's surface. Galapagos' geographical isolation is therefore of mayor value, but it is rapidly diminishing due to the increase of marine and air transportation among islands and with the rest of the world. This increased accessibility implies enhanced risks for the ecological dynamics on the archipelago (e.g. increased risk of biological invasions, uncontrolled tourism growth, more water and energy consumption). Here, we introduce a general accessibility model to assess geographical isolation of the Galapagos Islands. The model aims to characterize accessibility in terms of human mobility by evaluating travel time to each point of the archipelago using all available transportation modalities. Using a multi criteria cost surface for marine and land areas, we estimated travel time for each surface unit using the fastest route and mode of transportation available while considering several friction factors such as surface type, slope, infrastructure, transfer points, legal restrictions, and physical barriers. We created maps to evaluate the isolation of different islands and places, highlighting the potential risks for several habitats and ecosystems. The model can be used for research and decision-making regarding island conservation, such as estimating spreading paths for invasive species, informing decisions on tourism management, and monitoring isolation changes of sensitive ecosystems.

  3. Vulnerability assessment of small islands to tourism: The case of the Marine Tourism Park of the Gili Matra Islands, Indonesia

    Directory of Open Access Journals (Sweden)

    Fery Kurniawan

    2016-04-01

    Full Text Available The Indonesian government is currently directing its focus of development on the optimum uses of marine and coastal ecosystem services including the marine and coastal tourism. One of the main locus of coastal and marine tourism is the small islands tourism such as Gili Matra Islands among others. Small islands tourism is one of the favourite touristic activities because the destination provides beauty, exotism, aesthetic and a diversity of natural habitats including the warm, clear and attractive water. Tourism is being considered as a development instrument in order to boost a country’s economy and has become part of the global industry. However, tourism is also one of the actors that is responsible for environmental depletion, due to the constructions of buildings and tourism activities. This paper aims to study the level of vulnerability in small islands to tourism as a basis of integrated small islands management in Indonesian conservation area. The group of islands in this study consists of three islands namely Gili Ayer Island, Gili Meno Island and Gili Trawangan Island (known as Gili Matra Islands that were observed using Small Islands Vulnerability Index (SIVI. The results indicate that Gili Matra Islands have a vulnerability status from low into moderate, ranging from 2.25 to 2.75. Gili Ayer Island has the highest vulnerability with SIVI of 2.75 (Moderate, followed by Gili Meno Island with SIVI of 2.50 (Low and Gili Trawangan Island with SIVI of 2.25 (Low. The driving factor of vulnerability is the intensive utilization of marine tourism activities. Tourism is the sole stress to Gili Matra Island’s ecosystem due to its direct damaging impact and reducing its environmental quality. The vulnerability index which was built from the coastline, coral reef, live coral reef, and development area was applicable to assess the small island’s vulnerability in Indonesia, especially for coral island.

  4. Breast Cancer and the Environment on Long Island

    Science.gov (United States)

    The cornerstone of the LIBCSP is the Breast Cancer and the Environment on Long Island Study, which was undertaken to determine whether certain environmental contaminants increase risk of breast cancer among women on Long Island.

  5. Northwest Hawaiian Islands Coral Reef Ecosystem Division Reef Fish Biomass

    Data.gov (United States)

    U.S. Environmental Protection Agency — This dataset represents island-scale mean and Standard Error of biomass for 4 trophic groups using all data from North West Hawaiian Islands gathered using NOAA's...

  6. 40 CFR 81.354 - Northern Mariana Islands.

    Science.gov (United States)

    2010-07-01

    ...: Northern Islands Municipality Unclassifiable/Attainment. Rota Municipality Unclassifiable/Attainment. Saipan Municipality Unclassifiable/Attainment. Tinian Municipality Unclassifiable/Attainment. a Includes...: Northern Islands Municipality Unclassifiable/Attainment Unclassifiable/Attainment. Rota...

  7. Northern Mariana Islands Marine Monitoring Team Reef Flat Surveys

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Commonwealth of the Northern Mariana Islands' (CNMI) interagency marine monitoring team conducts surveys on reef flat areas on the islands of Saipan, Tinian and...

  8. Chronic Liver Disease and Native Hawaiian/Pacific Islanders

    Science.gov (United States)

    ... Hawaiian/Other Pacific Islander > Chronic Liver Disease Chronic Liver Disease and Native Hawaiian/Pacific Islander Native Hawaiian/ ... times more likely to be diagnosed with chronic liver disease in 2006. American Samoans were 8 times ...

  9. Mechanism of viscosity effect on magnetic island rotation

    Energy Technology Data Exchange (ETDEWEB)

    Mikhailovskii, A.B.; Konovalov, S.V. [Institute of Nuclear Fusion, Russian Research Centre ' Kurchatov Institute' , Kurchatov Sq., 1, Moscow (Russian Federation); Pustovitov, V.D. [National Inst. for Fusion Science, Toki, Gifu (Japan); Tsypin, V.S. [Institute of Physics, University of Sao Paulo, Rua do Matao, Travessa R, SP (Brazil)

    2000-04-01

    It is shown that plasma viscosity does not influence the magnetic island rotation directly. Nevertheless, it leads to nonstationarity of the plasma velocity. This nonstationarity is the reason of the viscosity effect on island rotation. (author)

  10. Kodiak brown bear population on Kodiak Island, Alaska

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Methods and estimates of the Brown bear population on Kodiak Island. The total number of Kodiak Brown Bears on Kodiak Island has been estimated to be 1669. Three...

  11. Shipwreck archaeology of the Lakshadweep Islands, west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Tripati, S.; Gudigar, P.

    Archaeological investigations in the Lakshadweep Islands have brought to light the presence of a large number of shipwrecks and the archival records have the details of some of these wrecks. Northern islands and reefs of Minicoy were the locations...

  12. Narrative report: Gulf Island National Wildlife Refuges: 1965

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Gulf Island National Wildlife Refuges (Petit Bois National Wildlife Refuge, Horn Island National Wildlife Refuge, and Breton...

  13. Narrative report: Gulf Island National Wildlife Refuges: 1967

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Gulf Island National Wildlife Refuges (Petit Bois National Wildlife Refuge, Horn Island National Wildlife Refuge, and Breton...

  14. Correspondence Regarding the Purchase of St. Vincent Island

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This document contains a series of letters discussing the sale of St. Vincent Island. Robert Bishop wishes to purchase the island and writes back and forth with the...

  15. Estuarine Shoreline and Barrier-Island Sandline Change Assessment Dataset

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — The Barrier Island and Estuarine Wetland Physical Change Assessment Dataset was created to calibrate and test probability models of barrier island sandline and...

  16. Narrative report: Gulf Island National Wildlife Refuges: 1966

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Gulf Island National Wildlife Refuges (Petit Bois National Wildlife Refuge, Horn Island National Wildlife Refuge, and Breton...

  17. Narrative report: Gulf Island National Wildlife Refuges: 1968

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Gulf Island National Wildlife Refuges (Petit Bois National Wildlife Refuge, Horn Island National Wildlife Refuge, and Breton...

  18. Narrative report: Gulf Island National Wildlife Refuges: 1964

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Gulf Island National Wildlife Refuges (Petit Bois National Wildlife Refuge, Horn Island National Wildlife Refuge, and Breton...

  19. Fox management plan, Aleutian Islands Unit, AMNWR: Draft

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The presence or absence of arctic fox on islands in the Aleutian Islands Units is described as a decision tool for fox eradication. An effective chemical...

  20. Vascular plant diversity of the Paracel Islands, China

    Directory of Open Access Journals (Sweden)

    Yi Tong

    2013-05-01

    Full Text Available The Paracel Islands (Xisha Islands comprise a group of tropical islands that are located south of mainland China and have a particular natural flora. Based on a literature search and our own investigations, we present here a checklist of plants for 24 of the Paracel Islands. We also report an analysis of plant diversity, its distribution and relationship with that of neighboring regions. A total of 396 vascular plants were recorded which belonged to 262 genera and 85 families. Of these, 220 were wild species and 176 were cultivated. As a whole, the islands do not possess a rich flora; however, there are major differences in plant diversity among islands. The flora consists in large part of tropical elements, typical of tropical coral islands of China. The flora is most closely connected to that of Hainan Island, and closely related to those of Taiwan of China, Indochina, Malaysia, Indonesia and the Philippines.

  1. Northern fur seal pup weights, Pribilof Islands, Alaska, 1957-present

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This database contains northern fur seal pup mass and length data by date, island, rookery and sex on the Pribilof Islands, Alaska, collected between 1957-2012. Mass...

  2. Topological description of Easter Islander palmar dermatoglyphics.

    Science.gov (United States)

    Goodson, C S; Meier, R J

    1986-10-01

    A sample of 594 Easter Islander palms was analyzed according to the topological method. Some suggestions for clarification of the topological approach were made, including clearer definition of the palmar triradii and substitution of the term "profile" for "formula." The frequency of Easter Islander profiles was compared against British and Australian Aborigine samples (Loesch, 1974; 1983a,b) and found to be significantly different for two of the ten most common combinations. The individual pattern elements, pattern intensities, a-b count, A-line exit, and atd angle were described, with population comparisons made when they were available.

  3. How a bird is an island

    Directory of Open Access Journals (Sweden)

    Lapoint Richard

    2012-06-01

    Full Text Available Abstract Replicate adaptive radiations occur when lineages repeatedly radiate and fill new but similar niches and converge phenotypically. While this is commonly seen in traditional island systems, it may also be present in host-parasite relationships, where hosts serve as islands. In a recent article in BMC Biology, Johnson and colleagues have produced the most extensive phylogeny of the avian lice (Ischnocera to date, and find evidence for this pattern. This study opens the door to exploring adaptive radiations from a novel host-parasite perspective. See research article: http://www.biomedcentral.com/1741-7007/10/52

  4. Voltage control of DC islanded microgrids

    DEFF Research Database (Denmark)

    Tucci, Michele; Riverso, Stefano; Quintero, Juan Carlos Vasquez

    2015-01-01

    We propose a new decentralized control scheme for DC Islanded microGrids (ImGs) composed by several Distributed Generation Units (DGUs) with a general interconnection topology. Each local controller regulates to a reference value the voltage of the Point of Common Coupling (PCC) of the correspond......We propose a new decentralized control scheme for DC Islanded microGrids (ImGs) composed by several Distributed Generation Units (DGUs) with a general interconnection topology. Each local controller regulates to a reference value the voltage of the Point of Common Coupling (PCC...

  5. Models of GexSe1-x

    Science.gov (United States)

    Malouin, Marc-André.; Mousseau, Normand

    2008-03-01

    We present numerical models of chalcogenide glasses constructed using the effective two and three body interaction potential developed by Mauro and Varshneya [1] combined with the activation-relaxation technique (ART nouveau) [2]. Structures are prepared starting from a random distribution, avoiding biases and crystalline remnants. Structural properties are studied mainly via characteristic system measurements including partial and total radial distribution functions, bond angle distributions, mean coordinations and bonds population. Results are shown for GexSe1-x for various x concentrations and compared to both experimental measurements and ab initio simulation results. [1] J.C. Mauro and A.K. Varshneya, J. Am. Ceram. Soc., 89 [7] 2323-6 (2006). [2] R. Malek and N. Mousseau, Phys. Rev. E 62, 7723 (2000).

  6. Ecuador: cuando la inestabilidad se vuelve estable

    Directory of Open Access Journals (Sweden)

    Pachano , Simón

    2005-09-01

    Full Text Available El presente artículo busca explicaciones para los derrocamientos de tres presidentes ecuatorianos, que han marcado los puntos culminantes de una década de inestabilidad. Lo hace indagando en el campo de las movilizaciones sociales que precedieron a cada uno de esos hechos, con especial referencia a su composición social y a los objetivos de sus integrantes. En la parte final se proponen algunas hipótesis acerca de la movilización en contra del gobierno de Gutiérrez. Sugiere que no son válidas las explicaciones de racismo y de temor clasista. Enlaza la explicación al surgimiento de reivindicaciones democráticas originadas tanto en los bajos rendimientos del sistema político como en el carácter dictatorial que iba tomando el último gobierno.

  7. Bio-fortification and isotopic labelling of Se metabolites in onions and carrots following foliar application of Se and 77Se

    DEFF Research Database (Denmark)

    Kápolna, Emese; Laursen, Kristian H.; Husted, Søren;

    2012-01-01

    that foliar application of Se(IV) gave rise to bio-synthesis of a higher fraction of the desired organic Se species and was better tolerated by the plants than Se(VI). Based on these findings onions and carrots were bio-fortified by foliar application of a solution of 77Se(IV) that was enriched to 99.7% as 77...

  8. Terrestrial reptiles from San Lorenzo Island, Lima, Peru

    Directory of Open Access Journals (Sweden)

    José Pérez Z.

    2015-04-01

    Full Text Available We report four species of terrestrial reptiles, a geckonid (Phyllodactlus cf. microphyllus, two lizards (Microlophus peruvianus and M. tigris and one snake (Pseudalsophis elegans from San Lorenzo island, Departament of Lima, Peru. Herein, we report the first record of “Loma’s lizard” M. tigris and the snake P. elegans in Peruvian islands. The presence of Lomas herbaceous and the considerable extent of San Lorenzo island can explain the relatively high species richness of terrestrial reptiles on the island.

  9. Wh-islands in degree questions: A semantic approach

    Directory of Open Access Journals (Sweden)

    Márta Abrusán

    2011-09-01

    Full Text Available It is proposed that wh-islands with degree questions are unacceptable because they cannot be given a most informative true answer. Wh-islands thus are shown to be similar to other cases of weak islands which have been argued to result from Maximization Failure, in particular negative islands (cf. Fox & Hackl 2007. Permanent DOI link: http://dx.doi.org/10.3765/sp.4.5 BibTeX info

  10. Accessibility of Peripheral Regions: Evidence from Aegean Islands (Greece)

    OpenAIRE

    Ioannis Spilanis; Thanasis Kizos; Paraskevi Petsioti

    2012-01-01

    Islands, especially smaller ones, are characterized by discontinuity of space and are considered as some of the least accessible areas. In this paper, we seek to shed light on the accessibility problems that islands face from the point of view of island residents. This shift in emphasis considers additional aspects to accessibility that include the availability of connections to access services required to cover the needs of island residents and the different destinations where these may be a...

  11. Amsterdam Expeditions to the West Indian Islands, Report 13. Marine sponges from an island cave on San Salvador Island, Bahamas

    NARCIS (Netherlands)

    Soest, van R.W.M.; Sass, B. Daniel

    1981-01-01

    Dixon Hill Lighthouse Cave, about 800 m (0.5 miles) inshore on San Salvador Island, Bahamas, was found to hold populations of three sponge species new to science, viz. Pellina penicilliformis n. sp., Prosuberites geracei n. sp., and Cinachyra subterranea n. sp. The new species are described and figu

  12. The CuInSe{sub 2}-CuGaSe{sub 2}-2CdSe system and crystal growth of the {gamma}-solid solutions

    Energy Technology Data Exchange (ETDEWEB)

    Marushko, L.P., E-mail: marushko777@mail.r [Department of General and Inorganic Chemistry, Volyn National University, Voli Ave 13, Lutsk 43009 (Ukraine); Romanyuk, Y.E. [Swiss Federal Laboratories for Materials Testing and Research, EMPA, Uberlandstrasse 129, CH-8600 Duebendorf (Switzerland); Piskach, L.V.; Parasyuk, O.V.; Olekseyuk, I.D. [Department of General and Inorganic Chemistry, Volyn National University, Voli Ave 13, Lutsk 43009 (Ukraine); Volkov, S.V.; Pekhnyo, V.I. [V.I. Vernadskii Institute for General and Inorganic Chemistry of the Ukrainian National Academy of Sciences, Palladina Ave 32-34, Kyiv 03680 (Ukraine)

    2010-08-27

    Phase equilibria in the CuInSe{sub 2}-CuGaSe{sub 2}-2CdSe system are studied using differential-thermal analysis and phase X-ray diffraction. An isothermal section of the system at 870 K, and phase diagrams of polythermal sections CuInSe{sub 2}-CuGaSe{sub 2} and 'CuCd{sub 2}InSe{sub 4}'-CuCd{sub 2}GaSe{sub 4} have been constructed. The 'CuCd{sub 2}InSe{sub 4}'-CuCd{sub 2}GaSe{sub 4} section is not quasi-binary and includes two solid solution regions with the wurtzite and sphalerite structure-types. Eleven crystals of the {gamma}-solid solutions with the sphalerite structure-type were grown by the Bridgman technique. The non-quasi-binary nature of the 'CuCd{sub 2}InSe{sub 4}'-CuCd{sub 2}GaSe{sub 4} section gives rise to compositional gradients for copper, cadmium, and gallium along the crystal growth direction so that the crystal tip is enriched with CdSe. Band gap of the grown crystals varies from 1.05 eV to {approx}1.30 eV.

  13. Photo and electroluminescence of ZnSe: Sn and ZnSe:(Sn, Pr) phosphors

    Science.gov (United States)

    Mishra, A. K.; Mishra, S. K.; Pandey, S. P.; Lakshmi Mishra, Kshama

    2016-09-01

    We have prepared ZnSe (luminescent grade) phosphor doped with Sn and (Sn,Pr) with varying concentration in an inert atmosphere in a silica tubular furnace at temperature of (780 ± 20) °C for 1 hr to obtain ZnSe:Sn and ZnSe: (Sn,Pr) phosphors. The photo luminescence (PL) and electroluminescence (EL) spectra of these phosphors have been studied at room temperature and results were discussed in the light of existing models. Dependence of EL emission on the voltage frequency has also been carried out. It is found that the plot between the integrated light intensity versus 1/√Vrms is a straight line suggesting the existence of Mott-Schottky type barrier on the metal semiconductor interface.

  14. Absorption Spectra of CuGaSe 2 and CuInSe 2 Semiconducting Nanoclusters

    KAUST Repository

    Mokkath, Junais Habeeb

    2015-10-01

    The structural and optical properties of the chalcopyrite CunGanSe2n and CunInnSe2n nanoclusters (n = 2, 4, 6, and 8) are investigated as a function of the size using a combination of basin-hopping global optimization and time-dependent density functional theory. Although the lowest energy structures are found to show almost random geometries, the band gaps and absorption spectra still are subject to systematic blue shifts for decreasing cluster size in the case of CunGanSe2n, indicating strong electron confinement. The applicability of the nanoclusters in photovoltaics is discussed. © 2015 American Chemical Society.

  15. Optical properties of thermally annealed CdZnSe/ZnSe quantum dots

    Energy Technology Data Exchange (ETDEWEB)

    Margapoti, Emanuela

    2010-07-01

    To analyse the diffusion characteristics, photoluminescence (PL) spectroscopy has been carried out in extensive detail on single, as well as, ensembles of thermally annealed (TA) CdSe/ZnSe QDs. For a series of QD-ensembles, each annealed for t{sub A} = 30 s at temperatures from T{sub A} = 300-550 C, the change in the QD-composition has been calculated from the blue-shift of the exciton ground-state PL-emission, using a concentration function based on Fick's laws of diffusion. The diffusion length (L{sub D}) and the activation energy (E{sub A}) have been determined thereof. For the studied QDs, E{sub A} has been evaluated to be 2.2 eV. Additionally, TA results also in an enhancement of the PL-intensity and reduction of the full-width-at-half maximum (FWHM) of the spectra. This point towards an increased homogeneity of the QD-size and composition, and decrease in the concentration of defects around the QDs. For single CdSe/ZnSe QDs, TA has been varied from 100-240 C, in steps for 20 C, with t{sub A} kept fixed at 30 s. Finally, the evolution of the magneto-optic response with post-growth thermal annealing has been studied for both individual QDs and QD-ensembles. An external magnetic field, applied perpendicular to the plane of the QDs (Faraday configuration), results in Zeeman spin splitting of the ground exciton state. The emissions from the Zeeman-split states are left and right circularly polarized and from the degree of circular polarization (DCP), as well as, the spectral separation of the PL-peaks, the g-factor can be estimated. For CdSe/ZnSe QD-ensembles, the g-factor has been observed to change sign with TA. (orig.).

  16. Determination of dispersive optical constants of nanocrystalline CdSe (nc-CdSe) thin films

    Energy Technology Data Exchange (ETDEWEB)

    Sharma, Kriti; Al-Kabbi, Alaa S.; Saini, G.S.S. [Centre of Advanced Study in Physics, Department of Physics, Panjab University, Chandigarh 160014 (India); Tripathi, S.K., E-mail: surya@pu.ac.in [Centre of Advanced Study in Physics, Department of Physics, Panjab University, Chandigarh 160014 (India)

    2012-06-15

    Highlights: ► nc-CdSe thin films are prepared by thermal vacuum evaporation technique. ► TEM analysis shows NCs are spherical in shape. ► XRD reveals the hexagonal (wurtzite) crystal structure of nc-CdSe thin films. ► The direct optical bandgap of nc-CdSe is 2.25 eV in contrast to bulk (1.7 eV). ► Dispersion of refractive index is discussed in terms of Wemple–DiDomenico single oscillator model. -- Abstract: The nanocrystalline thin films of CdSe are prepared by thermal evaporation technique at room temperature. These thin films are characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), X-ray diffraction (XRD) and photoluminescence spectroscopy (PL). The transmission spectra are recorded in the transmission range 400–3300 nm for nc-CdSe thin films. Transmittance measurements are used to calculate the refractive index (n) and absorption coefficient (α) using Swanepoel's method. The optical band gap (E{sub g}{sup opt}) has been determined from the absorption coefficient values using Tauc's procedure. The optical constants such as extinction coefficient (k), real (ε{sub 1}) and imaginary (ε{sub 2}) dielectric constants, dielectric loss (tan δ), optical conductivity (σ{sub opt}), Urbach energy (E{sub u}) and steepness parameter (σ) are also calculated for nc-CdSe thin films. The normal dispersion of refractive index is described using Wemple–DiDomenico single-oscillator model. Refractive index dispersion is further analysed to calculate lattice dielectric constant (ε{sub L}).

  17. Tectonic dynamics of the Lipari-Vulcano islands revealed by geodetic and seismic data

    Science.gov (United States)

    Gambino, S.; Alparone, S.; Bonforte, A.; Gresta, S.; Guglielmino, F.; Obrizzo, F.; Puglisi, G.

    2009-12-01

    Ground deformations measured during the last two GPS surveys carried out in March 2006 and September 2007 on the Lipari-Vulcano network are analyzed. Through this period, the monitoring seismic network measured an increase of seismic strain release around the Lipari-Vulcano complex with respect to the previous years. GPS surveys measured a significant N-ward motion of Vulcano island with respect to the ITRF05. This motion abruptly decreases in the N part of Vulcano, suggesting a decoupling of the main Vulcano island from the rest of the volcanic complex. By assuming a local reference frame, we observed that the Lipari island and the northernmost part of the Vulcano island are moving SSE-ward with respect to the central and southernmost part of the Vulcano island. GPS data also highlighted a local uplift of the “La Fossa” cone superimposed on the general subsidence of the island, increasing towards N. The vertical movements measured by GPS are compared with the results of the leveling surveys carried out on the network installed and managed by the INGV - Osservatorio Vesuviano for monitoring vertical ground movements on Volcano island. Height variations are computed with respect to a reference benchmark located on the southern part of the island, which is a relatively stable area compared to the northern part. The comparison between the two most recent surveys (October 2003 and October 2008) indicates a significant subsidence of the centre-northern area of the island (bottom Fossa Crater and Vulcanello). We also analyzed the long-term tilt observations through the same period. The tilt network at Vulcano Island currently has five borehole stations, four of which are installed at depth of 8-10 m, allowing recording stable and highly accurate signals with low noise. Tilt vectors concur well with leveling and GPS data, highlighting a deflection towards the central-northern part of the island. Geodetic strain tensor analysis derived by GPS data was performed over

  18. NOAA TIFF Graphic- 0.5m Backscatter Mosaic of St. Croix (Buck Island), US Virgin Islands, 2004

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This image represents a 1 meter resolution backscatter mosaic of the north shore of Buck Island, St. Croix, US Virgin Islands.NOAA's NOS/NCCOS/CCMA Biogeography Team...

  19. Bathymetry 1M GRID of St. Croix (Buck Island), US Virgin Islands, 2004, UTM 20 WGS84

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset contains an ESRI Grid with 1 meter cell size representing the bathymetry of the north shore of Buck Island St. Croix, US Virgin Islands. NOAA's...

  20. NOAA ESRI Geotiff- 1m Bathymetry of St. Croix (Buck Island), US Virgin Islands, 2004, UTM 20 WGS84

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset contains an ESRI Geotiff with 1 meter cell size representing the bathymetry of the north shore of Buck Island St. Croix, US Virgin Islands.NOAA's...

  1. NOAA TIFF Graphic- 0.5m Backscatter Mosaic of St. Croix (Buck Island), US Virgin Islands, 2004

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This geotiff represents a 0.5 meter resolution backscatter mosaic of the north shore of Buck Island, St. Croix, US Virgin Islands.NOAA's NOS/NCCOS/CCMA Biogeography...

  2. Narrative report : Back Bay National Wildlife Refuge : Mackay Island National Wildlife Refuge : Fisherman Island National Wildlife Refuge : Calendar year 1969

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Back Bay NWR, Mackay Island NWR, and Fisherman Island NWR outlines Refuge accomplishments during the 1969 calendar year. The report...

  3. Seafloor Backscatter Image of North of Santa Rosa Island, Channel Islands National Marine Sanctuary (8m resolution tif)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This image represents an 8 meter resolution backscatter of the seafloor south of Santa Rosa Island in Channel Islands National Marine Sanctuary. It was acquired...

  4. CRED 40 m Gridded bathymetry of Baker Island, Pacific Remote Island Areas, Central Pacific (Arc ASCII Format)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Gridded (40 m cell size) bathymetry of the shelf and slope environments of Baker Island, Pacific Remote Island Areas, Central Pacific. Almost complete bottom...

  5. CRED 40 m Gridded bathymetry of Howland Island, Pacific Remote Island Areas, Central Pacific (NetCDF Format)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Gridded (40 m cell size) bathymetry of the shelf and slope environments of Howland Island, Pacific Remote Island Areas, Central Pacific. Almost complete bottom...

  6. Bathymetry 1M Grid of St. Croix (Buck Island), US Virgin Islands 2005, UTM 20 NAD83

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset contains an ESRI Grid with 1 meter cell size representing the bathymetry of the north shore of St. Croix (Buck Island), US Virgin Islands. NOAA's...

  7. Seney National Wildlife Refuge, Harbor Islands National Wildlife Refuge, Huron Islands National Wildlife Refuge: Annual narrative report: Calendar year 1989

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This annual narrative report for Seney NWR, Huron Island NWR, and Harbor Island NWR outlines Refuge accomplishments during the 1989 calendar year. The report begins...

  8. Department of the Interior : Draft Environmental Statement : DES 74-19 : Proposed Mattamuskeet - Swanquarter - Cedar Island - Pea Island Wilderness Area

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This document is a draft of an analysis of the environmental impact wilderness designation would pose for the Mattamuskeet - Swanquarter - Cedar Island - Pea Island...

  9. CRED 5 m Gridded bathymetry of Baker Island, Pacific Remote Island Areas, Central Pacific (NetCDF Format)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Gridded (5 m cell size) bathymetry of the shelf and slope environments of Baker Island, Pacific Remote Island Areas, Central Pacific. Almost complete bottom coverage...

  10. CRED 40 m Gridded bathymetry of Baker Island, Pacific Remote Island Areas, Central Pacific (NetCDF Format)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Gridded (40 m cell size) bathymetry of the shelf and slope environments of Baker Island, Pacific Remote Island Areas, Central Pacific. Almost complete bottom...

  11. Biometric variation in Spadella cephaloptera on the Canary Islands (Chaetognatha)

    NARCIS (Netherlands)

    Broerse, Alexandra T.C.

    1993-01-01

    Specimens of Spadella cephaloptera from Tenerife, Gran Canaria and Gomera (Canary Islands) were compared biometrically in regards to morphometric and meristic characters. Variation exists among the populations on the islands as well as between the islands. The populations on Gomera seem more distinc

  12. Tracing the Evolution of Florida's St. Vincent Island

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This is a history of St. Vincent Island, up to the year that it was bought by the U.S. Fish and Wildlife Service. St. Vincent Island is a natural barrier island...

  13. Sustainable Mobility for Tourists at the Dutch Coastal Islands (Waddeneilanden)

    NARCIS (Netherlands)

    Sminia, O.; Vogtländer, J.G.; Brezet, J.C.

    2010-01-01

    The European Coastal Islands around the North sea, are joined together in a project that stimulates sustainable development. Within this 'Cradle-to-Cradle Islands' project, some islands were selected as breading grounds for potentially sustainable projects. One of these projects was the development

  14. The distribution of bats on the Adriatic islands

    NARCIS (Netherlands)

    Dulić, Beatrica; Tvrtković, Nikola

    1970-01-01

    The bat fauna of the Adriatic islands is very poorly known in comparison with that of the coastal continental regions (Kolombatović, 1882, 1884; Dulić, 1959). Although ten species of bats are recorded, the data for most of the islands except the island of Lastovo (Dulić, 1968) are scarce, and of an

  15. Rhode Island Model Evaluation & Support System: Support Professional. Edition II

    Science.gov (United States)

    Rhode Island Department of Education, 2015

    2015-01-01

    Rhode Island educators believe that implementing a fair, accurate, and meaningful evaluation and support system for support professionals will help improve student outcomes. The primary purpose of the Rhode Island Model Support Professional Evaluation and Support System (Rhode Island Model) is to help all support professionals do their best work…

  16. Rhode Island Model Evaluation & Support System: Teacher. Edition III

    Science.gov (United States)

    Rhode Island Department of Education, 2015

    2015-01-01

    Rhode Island educators believe that implementing a fair, accurate, and meaningful educator evaluation and support system will help improve teaching and learning. The primary purpose of the Rhode Island Model Teacher Evaluation and Support System (Rhode Island Model) is to help all teachers improve. Through the Model, the goal is to help create a…

  17. Rhode Island Model Evaluation & Support System: Building Administrator. Edition III

    Science.gov (United States)

    Rhode Island Department of Education, 2015

    2015-01-01

    Rhode Island educators believe that implementing a fair, accurate, and meaningful educator evaluation and support system will help improve teaching, learning, and school leadership. The primary purpose of the Rhode Island Model Building Administrator Evaluation and Support System (Rhode Island Model) is to help all building administrators improve.…

  18. Is the island universe model consistent with observations?

    OpenAIRE

    Piao, Yun-Song

    2005-01-01

    We study the island universe model, in which initially the universe is in a cosmological constant sea, then the local quantum fluctuations violating the null energy condition create the islands of matter, some of which might corresponds to our observable universe. We examine the possibility that the island universe model is regarded as an alternative scenario of the origin of observable universe.

  19. Reconnection of islanded portion of the CIGRE low voltage network

    DEFF Research Database (Denmark)

    Mustafa, Ghullam; Bak, Claus Leth; Bak-Jensen, Birgitte;

    2016-01-01

    Islanding is a condition where a portion of the power network is electrically isolated from the main the transmission grid. Islanded operation is encouraged in order to improve the reliability of the power network. However, the reliability of the small networks operating is island is less as comp...

  20. 2-Selenouridine triphosphate synthesis and Se-RNA transcription.

    Science.gov (United States)

    Sun, Huiyan; Jiang, Sibo; Caton-Williams, Julianne; Liu, Hehua; Huang, Zhen

    2013-09-01

    2-Selenouridine ((Se)U) is one of the naturally occurring modifications of Se-tRNAs ((Se)U-RNA) at the wobble position of the anticodon loop. Its role in the RNA-RNA interaction, especially during the mRNA decoding, is elusive. To assist the research exploration, herein we report the enzymatic synthesis of the (Se)U-RNA via 2-selenouridine triphosphate ((Se)UTP) synthesis and RNA transcription. Moreover, we have demonstrated that the synthesized (Se)UTP is stable and recognizable by T7 RNA polymerase. Under the optimized conditions, the transcription yield of (Se)U-RNA can reach up to 85% of the corresponding native RNA. Furthermore, the transcribed (Se)U-hammerhead ribozyme has the similar activity as the corresponding native, which suggests usefulness of (Se)U-RNAs in function and structure studies of noncoding RNAs, including the Se-tRNAs.