WorldWideScience

Sample records for caribbean monk seal

  1. Extinction rate, historical population structure and ecological role of the Caribbean monk seal

    OpenAIRE

    McClenachan, Loren; Cooper, Andrew B.

    2008-01-01

    The productivity and biomass of pristine coral reef ecosystems is poorly understood, particularly in the Caribbean where communities have been impacted by overfishing and multiple other stressors over centuries. Using historical data on the spatial distribution and abundance of the extinct Caribbean monk seal (Monachus tropicalis), this study reconstructs the population size, structure and ecological role of this once common predator within coral reef communities, and provides evidence that h...

  2. Legacy HMSRP Hawaiian Monk Seals Observers

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set documents observers that have collected monk seal data as part of the ongoing monk seal population assessment efforts by PSD personnel and cooperating...

  3. HMSRP Hawaiian Monk Seal Argos Location Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This project investigates foraging behavior of Hawaiian monk seals by conducting telemetry studies. During these studies, live seals are instrumented with satellite...

  4. HMSRP Hawaiian Monk Seal Crittercam video

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This project investigates foraging behavior of Hawaiian monk seals by conducting telemetry studies. During these studies, live seals are instrumented with dive...

  5. HMSRP Hawaiian Monk Seal Handling Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains records for all handling and measurement of Hawaiian monk seals since 1981. Live seals are handled and measured during a variety of events...

  6. HMSRP Hawaiian Monk Seal Entanglement data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The data set contains records of all entanglements of Hawaiian monk seals in marine debris. The data set comprises records of seals entangled by derelict fishing...

  7. HMSRP Hawaiian Monk Seal Microsatellite Genotypes

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Currently ~2,400 Hawaiian monk seal specimens have been analyzed genetically, providing genotypes at 18 microsatellite loci. These data are organized by individual,...

  8. HMSRP Hawaiian Monk Seal Photo Identification Database

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This photo collection contains identification and other images and video of Hawaiian monk seals taken by PSD personnel and cooperating scientists as part of the...

  9. Contamination and potential impacts to monk seals

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — There are six main Hawaiian monk seal breeding colonies (French Frigate Shoals, Kure Atoll, Laysan Island, Lisianski Island, Pearl and Hermes Reef and Midway Atoll)...

  10. HMSRP Hawaiian Monk Seal Tag Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains records for all tags applied to Hawaiian monk seals since 1981. These tags were applied by PSD personnel and cooperating scientists as part...

  11. HMSRP Hawaiian Monk Seal Necropsy Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains information on Hawaiian monk seal gross necropsy (in some cases only field notes or minimal information) and histopathology results beginning...

  12. HMSRP Hawaiian Monk Seals on Social Media

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — As social media platforms develop, they potentially provide valuable information for wildlife researchers and managers. NOAA’s Hawaiian Monk Seal Research Program...

  13. HMSRP Hawaiian Monk Seal Survival Factors

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains records of survival factors recorded by PSD personnel and cooperating scientists as part of the ongoing monk seal population assessment...

  14. HMSRP Hawaiian Monk Seal Fisheries Interactions data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The data set contains records of all documented hookings and/or entanglements of Hawaiian monk seals with actively fished gear, both commercial and recreational....

  15. HMSRP Hawaiian Monk Seal Survey Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains records of Hawaiian monk seal and green turtle sightings in the Northwestern Hawaiian Islands (NWHI) since 1982 at Lisianski Island, and...

  16. HMSRP Hawaiian Monk Seal Master Identification Records (seal)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains records of all individually identified Hawaiian monk seals since 1981. These seals were identified by PSD personnel and cooperating...

  17. 50 CFR 665.248 - Monk seal protective measures.

    Science.gov (United States)

    2010-10-01

    ... protective measures may no longer be necessary for the protection of monk seals, the Assistant Administrator... 50 Wildlife and Fisheries 9 2010-10-01 2010-10-01 false Monk seal protective measures. 665.248... Fisheries § 665.248 Monk seal protective measures. (a) General. This section establishes a procedure...

  18. Biogeography and taxonomy of extinct and endangered monk seals illuminated by ancient DNA and skull morphology

    Directory of Open Access Journals (Sweden)

    Dirk-Martin Scheel

    2014-05-01

    Full Text Available Extinctions and declines of large marine vertebrates have major ecological impacts and are of critical concern in marine environments. The Caribbean monk seal, Monachus tropicalis, last definitively reported in 1952, was one of the few marine mammal species to become extinct in historical times. Despite its importance for understanding the evolutionary biogeography of southern phocids, the relationships of M.tropicalis to the two living species of critically endangered monk seals have not been resolved. In this study we present the first molecular data for M. tropicalis, derived from museum skins. Phylogenetic analysis of cytochrome b sequences indicates that M. tropicalis was more closely related to the Hawaiian rather than the Mediterranean monk seal. Divergence time estimation implicates the formation of the Panamanian Isthmus in the speciation of Caribbean and Hawaiian monk seals. Molecular, morphological and temporal divergence between the Mediterranean and “New World monk seals” (Hawaiian and Caribbean is profound, equivalent to or greater than between sister genera of phocids. As a result, we classify the Caribbean and Hawaiian monk seals together in a newly erected genus, Neomonachus. The two genera of extant monk seals (Monachus and Neomonachus represent old evolutionary lineages each represented by a single critically endangered species, both warranting continuing and concerted conservation attention and investment if they are to avoid the fate of their Caribbean relative.

  19. HMSRP Hawaiian Monk Seal Master Identification Records (annual)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains records of all individually identified Hawaiian monk seals since 1981. These seals were identified by PSD personnel and cooperating...

  20. HMSRP Hawaiian Monk Seal Cell Phone Tag Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This project investigates foraging behavior of Hawaiian monk seals by conducting telemetry studies. During these studies, live seals are instrumented with dive...

  1. Interaction between Monk Seals, Monachus monachus (Hermann, 1779), and artisanal fisheries in the Foca Pilot Monk Seal conservation area, Turkey

    NARCIS (Netherlands)

    Guclusoy, H.

    2008-01-01

    The present study examines some aspects of the interaction between critically endangered Monk Seals Monachus monachus and artisanal fisheries in the Foc¿a Pilot Monk Seal Conservation Area, Turkey, between 1994 and 2002. One to four permanent researchers collected the data on this interaction during

  2. Damage by monk seals to gear of the artisanal fishery in the Foca Monk Seal Pilot Conservation Area, Turkey

    NARCIS (Netherlands)

    Guclusoy, H.

    2008-01-01

    The present study examines the operational interaction between critically endangered monk seals Monachus monachus and artisanal fisheries in the Foc¿a Pilot Monk Seal Conservation Area, Turkey between 1994 and 2002. One to four permanent researchers collected the data on this interaction during the

  3. Legacy HMSRP Hawaiian Monk Seal Scat-spew data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This project investigates the dietary consumption of Hawaiian monk seals using traditional dietary analysis of fecal and regurgitate samples. Samples are collected...

  4. LEGACY - EOP CRITTERCAM Deployments on French Frigate Shoals monk seals

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRITTERCAMs, were deployed on a 42 monk seals at French Frigate Shoals Hawaii. Sixty nine hours of video comprised of 3192 recording segments collected at...

  5. HMSRP Hawaiian Monk Seal Island/Sector Locations for Data Collection

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set documents locations and location codes used in monk seal data collection as part of the ongoing monk seal population assessment efforts. Information...

  6. 50 CFR 226.201 - Critical habitat for Hawaiian monk seals.

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 7 2010-10-01 2010-10-01 false Critical habitat for Hawaiian monk seals. 226.201 Section 226.201 Wildlife and Fisheries NATIONAL MARINE FISHERIES SERVICE, NATIONAL OCEANIC AND... Critical habitat for Hawaiian monk seals. Hawaiian Monk Seal (Monachus schauinslandi) All beach areas,...

  7. Legacy HMSRP Hawaiian Monk Seal Ultrasound Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Ultrasounds measuring the condition of juvenile seals at Laysan Island during 2009-2010, collected when seals were handled as part of the De-Worming Project

  8. HMSRP Hawaiian Monk Seal Shark Predation Mitigation Shark Sightings and Incidents

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Data on direct sightings of large sharks around monk seal pupping sites and shark incidents on preweaned and newly weaned pups at French Frigate Shoals are entered...

  9. HMSRP Hawaiian Monk Seal Contaminants (Blubber, serum, and whole blood persistent organic pollutants) Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains information on persistent organic pollutant analysis of Hawaiian monk seal whole blood and blubber samples from the northwestern Hawaiian...

  10. HMSRP Observation of Hawaiian monk seal behavioral interactions - Oahu and Laysan Island, 2015

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Infectious disease has the potential to pose serious risk to Hawaiian Monk Seal populations. HMSRP is currently researching and evaluating methods to minimize...

  11. Validation and application of noninvasive glucocorticoid and thyroid hormone measures in free-ranging Hawaiian monk seals.

    Science.gov (United States)

    Gobush, K S; Booth, R K; Wasser, S K

    2014-01-01

    We validate fecal glucocorticoid (GC) and thyroid (T3) hormone metabolite measures in the Critically Endangered Hawaiian monk seal for the first time, and examine variation in the concentrations of these hormones in individuals across the species' range. We test hypotheses that monk seals from declining subpopulations have relatively high GCs and low T3 on average suggesting impacts of food limitation, and that this hormone pattern is more apparent in immature animals compared to adults, as food limitation is specifically indicated as a principal cause of poor body condition and survival of juvenile monk seals. We opportunistically sampled scat from 84 individually identifiable monk seals during the 2010 breeding season from two geographic regions, the main Hawaiian Islands (MHI) and the Northwestern Hawaiian Islands (NWHI). The MHI subpopulation of monk seals is growing, whereas subpopulations at many sites in the NWHI are in decline. Best fit general linear models predicting variation in GCs and T3 (examined separately) were similar (after accounting for significantly elevated hormone concentrations associated with molt and possibly lactation); both included sample date, region, and monk seal age as predictors. GC concentrations were significantly lower in MHI versus NWHI monk seals and decreased as the breeding season progressed. T3 concentrations were significantly lower in immature monk seals compared to adults. GC and T3 concentrations were positively correlated at 4 NWHI sites; prey may be adequate for physiological growth or maintenance at these sites but relatively stressful to acquire. GCs were highest at French Frigate Shoals, (a NWHI site) while T3 was relatively low here, indicating a possible signal of food limitation. GCs were lowest in the MHI. Disturbance associated with living near a high human population in the MHI appears to impact monk seal physiology less than other stressors encountered in the remote and highly protected NWHI where human

  12. ESTIMATING CONTACT RATES OF HAWAIIAN MONK SEALS (NEOMONACHUS SCHAUINSLANDI) USING SOCIAL NETWORK ANALYSIS.

    Science.gov (United States)

    Baker, Jason D; Harting, Albert L; Barbieri, Michelle M; Johanos, Thea C; Robinson, Stacie J; Littnan, Charles L

    2016-07-01

    Understanding disease transmission dynamics, which are in part mediated by rates and patterns of social contact, is fundamental to predicting the likelihood, rate of spread, impacts, and mitigation of disease outbreaks in wildlife populations. Contact rates, which are important parameters required for epidemiologic models, are difficult to estimate. The endangered Hawaiian monk seal (Neomonachus schauinslandi) may be particularly vulnerable to morbillivirus outbreaks, due to its low abundance, lack of genetic diversity, and history of isolation from mammalian diseases. Morbillivirus epizootics have had devastating effects on other seal populations. We constructed social networks based on visual observations of individually identifiable monk seals associating onshore to estimate contact rates, assuming random mixing, and also to investigate contact patterns of different age and sex classes. Contact rates estimated from two island populations in 4 yr were remarkably similar, indicating any two individuals have about a one in 1,000 chance of making contact on any given day. Further, contact patterns within and among age and sex classes were statistically different from random. The methods we used could be broadly applied to empirically derive contact rates using association data. These rates are critical for epidemiologic modelling to simulate wildlife disease outbreaks and to inform science-based prevention and mitigation programs. PMID:27195686

  13. Visceral leishmaniosis and parapoxvirus infection in a Mediterranean monk seal (Monachus monachus).

    Science.gov (United States)

    Toplu, N; Aydoğan, A; Oguzoglu, T C

    2007-05-01

    A Mediterranean monk seal was shown by immunohistochemical and polymerase chain reaction techniques to be dually infected with a Leishmania sp. and parapoxvirus. The pathological findings included a deep ulcer on the side of the head, ulcers on the gingival and inner aspect of the lower lip, enlarged lymph nodes and tonsils, and respiratory lesions (pulmonary consolidation, oedema, haemorrhages and emphysema; tracheal and bronchial congestion, exudates and haemorrhage). Amastigotes were demonstrated in macrophages in the lymph nodes and spleen, and intracytoplasmic inclusion bodies were observed in the tracheal and oral mucosa. PMID:17459405

  14. Genome-Wide Loss of Diversity in the Critically Endangered Hawaiian Monk Seal

    Directory of Open Access Journals (Sweden)

    Jennifer K. Schultz

    2010-05-01

    Full Text Available Threatened species often exhibit low genetic diversity as a result of selective sweeps, historical bottlenecks, or persistent small population size. Whereas selective sweeps create localized reduction of variation at a chromosome, population bottlenecks result in the loss of rare alleles throughout the genome. Heterozygosity is lost more slowly and is severely impacted only when populations are small for an extended period of time. We test the hypotheses of selective sweep, historical bottleneck and persistently small population size to explain extremely low genetic diversity in the critically endangered Hawaiian monk seal (Monachus schauinslandi. Of 163 microsatellite loci isolated from the species’ genome, only 17 are polymorphic. Mapping 98 monomorphic and 12 polymorphic loci to 35 chromosomes throughout the dog genome, we reject the selective sweep hypothesis. Genotyping 2,423 Hawaiian monk seals at the 17 polymorphic loci plus a locus previously isolated from another pinniped species, we find evidence for a recent bottleneck (P = 0.04. This is consistent with historical records describing intense hunting in the 19th century; however, the bottleneck was not of sufficient severity and duration to explain the genome-wide depletion of genetic diversity (HO = 0.05; A = 1.1. Long-term population size restriction is a more likely explanation. Though at least two of the polymorphic loci appear to be candidates for selection, the low genetic diversity of the species may further threaten chances for survival of this critically endangered species in a changing world.

  15. COINFECTION OF CALIFORNIA SEA LION ADENOVIRUS 1 AND A NOVEL POLYOMAVIRUS IN A HAWAIIAN MONK SEAL (NEOMONACHUS SCHAUINSLANDI).

    Science.gov (United States)

    Cortés-Hinojosa, Galaxia; Doescher, Bethany; Kinsel, Michael; Lednicky, John; Loeb, Julia; Waltzek, Thomas; Wellehan, James F X

    2016-06-01

    The Hawaiian monk seal (Neomonachus schauinslandi) is an endangered species. Here, we present a clinical case of a 26-yr-old male Hawaiian monk seal (HMS) kept in an aquarium with a history of intermittent anorexia and evidence of renal disease. Histologic examination revealed eosinophilic intranuclear inclusions in the liver. Conventional nested PCR protocols were used to test for viruses, and it tested positive for adenovirus and polyomavirus, and negative for herpesvirus. The adenovirus partial polymerase gene is 100% homologous to that of California sea lion adenovirus 1 (CSLAdV-1). CSLAdV-1 causes viral hepatitis in CSL, and has recently been reported in different species of otariids in an aquarium in Japan ( Otaria flavescens and Arctocephalus pusillus ) and a sequence from Spain has been submitted in NCBI as Otaria flavescens adenovirus-1. The polyomavirus in this animal is a novel virus, and is the first polyomavirus discovered in Hawaiian monk seals. This new virus is designated Hawaiian monk seal polyomavirus (HMSPyV-1), and is 83% homologous to California sea lion Polyomavirus-1 (CSLPyV-1). This is the first report of viral coinfection in a HMS and clinical significance in this case remains unclear but may be associated with advanced age.

  16. HMSRP Hawaiian Monk Seal Specimen Data (includes physical specimens, collection information, status, storage locations, and laboratory results associated with individual specimens)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set includes physical specimens, paper logs and Freezerworks database of all logged information on specimens collected from Hawaiian monk seals since...

  17. Research on the Ivory Seals Granted to Tibetan Monks in the Ming Dynasty%明朝颁赐藏僧象牙图章研究

    Institute of Scientific and Technical Information of China (English)

    李帅

    2015-01-01

    文章结合文物及文献材料对明代颁赐藏僧象牙图章的特点、性质、渊源、使用的等级规范与功用等情况进行了探讨,认为这类印章是明朝官方颁给以喇嘛为主的低级藏僧的印信,在印文及款识方面具有官印和私印的双重特点,是明代新出现的印章类型。明代象牙图章的出现虽有历史渊源,但自成体系,与明朝赐封藏僧封号的规则及一类规谏、褒扬印有更直接的关系,并在现实中有实际功用。对象牙图章的研究能补明代印制之阙,还可窥探明朝治藏的政策与特点,意义重大。%On the basis of a research of related cultural relics and literature materials, this article explores the ivory seals granted to Tibetan monks by the central government of the Ming Dynasty from the aspects of the seals ’characteristics, nature, origin, grades, functions, etc. The seals were mainly officially awarded to the ordinary monks in the Ming dynasty. They had the characteristics of both private and official seals in terms of the inscrip⁃tions on them and their design. They firstly emerged in the Ming Dynasty and a system of granting ivory seals were built then. Granting ivory seals was directly related with the rules of conferring titles to Tibetan monks in the Ming dynasty, and it had practical function in reality. Thus, the study of the ivory seals is of great signifi⁃cance. It not only can help us understand the seals system of the Ming dynasty, but also the Ming’s policies in Ti⁃bet.

  18. Legacy HMSRP Hawaiian Monk Seal Behavioral data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains focal animal observations and other behavioral data recorded during special studies conducted by PSD personnel and cooperating scientists as...

  19. Monk development experts: Using traditional knowledge to manage community development by monks in Isan

    Directory of Open Access Journals (Sweden)

    Phramaha Somdet Wongtham

    2015-05-01

    Full Text Available This investigation, monk development experts: Using traditional knowledge to manage community development by monks in Isan, is a qualitative study with three primary aims:To study the background of community development by monks in Northeastern Thailand, to study the current state of community development by monks in Northeastern Thailand and to outline a set of guidelines for community development by monks in Northeastern Thailand. The research area for this investigation was purposively selected and was composed of nine communities in Northeastern Thailand. Results show that monks have been involved in community development since Buddhism first arrived in North-eastern Thailand and their role is now primarily separated into three areas: Faith, knowledge and practice. The results of this investigation can be considered by local temples, communities, government institutions and individual monks when deciding how to manage and administer community development by monks in Northeastern Thailand.

  20. General Monte Carlo code MONK

    International Nuclear Information System (INIS)

    The Monte Carlo code MONK is a general program written to provide a high degree of flexibility to the user. MONK is distinguished by its detailed representation of nuclear data in point form i.e., the cross-section is tabulated at specific energies instead of the more usual group representation. The nuclear data are unadjusted in the point form but recently the code has been modified to accept adjusted group data as used in fast and thermal reactor applications. The various geometrical handling capabilities and importance sampling techniques are described. In addition to the nuclear data aspects, the following features are also described; geometrical handling routines, tracking cycles, neutron source and output facilities. 12 references. (U.S.)

  1. The better to eat you with: the comparative feeding morphology of phocid seals (Pinnipedia, Phocidae).

    Science.gov (United States)

    Kienle, Sarah S; Berta, Annalisa

    2016-03-01

    One adaptation crucial to the survival of mammalian lineages that secondarily transitioned from land to water environments was the ability to capture and consume prey underwater. Phocid seals have evolved diverse feeding strategies to feed in the marine environment, and the objectives of this study were to document the specialized feeding morphologies and identify feeding strategies used by extant phocids. This study used principal component analysis (PCA) to determine the major axes of diversification in the skull for all extant phocid taxa and the recently extinct Caribbean monk seal (n = 19). Prey data gathered from the literature and musculoskeletal data from dissections were included to provide a comprehensive description of each feeding strategy. Random Forest analysis was used to determine the morphological, ecological and phylogenetic variables that best described each feeding strategy. There is morphological evidence for four feeding strategies in phocids: filter; grip and tear; suction; and pierce feeding. These feeding strategies are supported by quantitative cranial and mandibular characters, dietary information, musculoskeletal data and, for some species, behavioral observations. Most phocid species are pierce feeders, using a combination of biting and suction to opportunistically catch prey. Grip and tear and filter feeding are specialized strategies with specific morphological adaptations. These unique adaptations have allowed leopard seals (Hydrurga leptonyx) and crabeater seals (Lobodon carcinophaga) to exploit novel ecological niches and prey types. This study provides the first cranial and mandibular morphological evidence for the use of specialized suction feeding in hooded seals (Cystophora cristata), northern elephant seals (Mirounga angustirostris) and southern elephant seals (Mirounga leonina). The most important variables in determining the feeding strategy of a given phocid species were cranial and mandibular shape, diet, and phylogeny

  2. HMSRP Hawaiian Monk Seal Shark Predation Mitigation Fishing Excursions

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Fishing excursion information, including summary tables of: Fishing/culling efforts, including date, islets, latitude/longitude, fishing method, soak times, culled...

  3. Final Critical Habitat for the Hawaiian Monk Seal (Monachus schauinslandi)

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The shapefile was created to represent the 200m depth contour around any land areas in the MHI and NWHI which was determined to be the outer extent of the marine...

  4. HMSRP Hawaiian Monk Seal Blood Values (Establishing hematology and serum chemistry reference ranges for wild Hawaiian Monk Seals)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Hematology and serum chemistry evaluations are essential to a patients comprehensive health exam by providing measures of organ function, blood cell volume and...

  5. MONK and MCBEND: Current status and recent developments

    International Nuclear Information System (INIS)

    Highlights: • We describe recent developments to the Monte Carlo codes MONK and MCBEND. • MONK is a Monte Carlo code for nuclear criticality and reactor physics analyses. • MCBEND is a Monte Carlo code for radiation shielding and dosimetry analyses. • Improvements include input; physics; scoring; variance reduction; and visualisation. • Parallelisation of MONK and multi-physics coupling are described. - Abstract: MONK® and MCBEND are Monte Carlo software packages for: nuclear criticality and reactor physics; and radiation shielding and dosimetry applications, respectively. The codes are actively developed, maintained and supported by AMEC’s ANSWERS® Software Service in line with the ANSWERS vision of providing easy-to-use software that meets the current and emerging needs of the user community. This paper summarises the current status of MONK and MCBEND and the recent developments which have been carried out to the codes, and their supporting nuclear data libraries and visualisation package

  6. Monks' Health: Holistic Health Care Model by Community Participation

    OpenAIRE

    Decha Buates; Songkoon Chantachon; Kosit Paengsoi; Anongrit Kangrang

    2010-01-01

    Problem statement: Monks health tended to be a continuous increased problem. They were groups who had limitations to access health services due to their monastic disciplines and their most importance for Buddhist institution. Without urgent solution, their normal way of life would have been affected. Approach: This research aimed to study current conditions and to develop monks holistic health care models by community participation in central region of Thailand. The study ...

  7. Seals and sealing handbook

    CERN Document Server

    Flitney, Robert K

    2014-01-01

    Seals and Sealing Handbook, 6th Edition provides comprehensive coverage of sealing technology, bringing together information on all aspects of this area to enable you to make the right sealing choice. This includes detailed coverage on the seals applicable to static, rotary and reciprocating applications, the best materials to use in your sealing systems, and the legislature and regulations that may impact your sealing choices. Updated in line with current trends this updated reference provides the theory necessary for you to select the most appropriate seals for the job and with its 'Failur

  8. Monks' Health: Holistic Health Care Model by Community Participation

    Directory of Open Access Journals (Sweden)

    Decha Buates

    2010-01-01

    Full Text Available Problem statement: Monks’ health tended to be a continuous increased problem. They were groups who had limitations to access health services due to their monastic disciplines and their most importance for Buddhist institution. Without urgent solution, their normal way of life would have been affected. Approach: This research aimed to study current conditions and to develop monks’ holistic health care models by community participation in central region of Thailand. The study was a qualitative research conducted in 9 temples; 3 temples in urban area, 3 in semi-urban area and 3 in rural area. Samples were 224 persons; consisted of monks, public health officers from Department of Religious Affairs, local administrative organizations and people; selected by purposive sampling method. Observation form, survey form, interview form, focus group discussion and workshop were used as research tools while data was analyzed by descriptive research. Results: The result founded that in former time culture of monks’ health care was leaned on community, social, culture and tradition. People spoke in style of central Thai language and were in agricultural sector as well as had their belief in merit, sin and elder respect. Relation in communities was in form of generosity and living as similar as relatives. When some monk got sick, they would visit, take care and give foods and medicines. Most of medicines were household remedy and Thai herbal medicine that bought from drug stores in local market or grocery stores in village and monks were sent to hospital in case of severe illness. Temple was a part of community, so they had close relation. Nowadays people increasingly worked in manufactories that caused conflicts and alienations among them. Monks leaned on local markets for receiving foods offering and most of foods were cooked from flour, sugar, coconut milk and fat. These caused three-fourth of monks having chronic disease as diabetes

  9. Vocational Discernment among Tibetan Buddhist Monks in Dharamsala, India

    Science.gov (United States)

    Thomas, Alvin; Kellom, Gar E.

    2009-01-01

    A major historical shift is taking place in Tibetan Buddhism with the relocation of large numbers of monks from Tibet and the establishment of monasteries in Dharamsala, India and other parts of South Asia. This has created a shift in the way that young men are joining these monasteries and leading this age old religious tradition. Fifteen college…

  10. Seals and sealing handbook

    CERN Document Server

    Flitney, Robert K

    2007-01-01

    Wherever machinery operates there will be seals of some kind ensuring that the machine remains lubricated, the fluid being pumped does not leak, or the gas does not enter the atmosphere. Seals are ubiquitous, in industry, the home, transport and many other places. This 5th edition of a long-established title covers all types of seal by application: static, rotary, reciprocating etc. The book bears little resemblance to its predecessors, and Robert Flitney has re-planned and re-written every aspect of the subject. No engineer, designer or manufacturer of seals can afford to be without this uniq

  11. Predictive equations for the estimation of body size in seals and sea lions (Carnivora: Pinnipedia).

    Science.gov (United States)

    Churchill, Morgan; Clementz, Mark T; Kohno, Naoki

    2014-08-01

    Body size plays an important role in pinniped ecology and life history. However, body size data is often absent for historical, archaeological, and fossil specimens. To estimate the body size of pinnipeds (seals, sea lions, and walruses) for today and the past, we used 14 commonly preserved cranial measurements to develop sets of single variable and multivariate predictive equations for pinniped body mass and total length. Principal components analysis (PCA) was used to test whether separate family specific regressions were more appropriate than single predictive equations for Pinnipedia. The influence of phylogeny was tested with phylogenetic independent contrasts (PIC). The accuracy of these regressions was then assessed using a combination of coefficient of determination, percent prediction error, and standard error of estimation. Three different methods of multivariate analysis were examined: bidirectional stepwise model selection using Akaike information criteria; all-subsets model selection using Bayesian information criteria (BIC); and partial least squares regression. The PCA showed clear discrimination between Otariidae (fur seals and sea lions) and Phocidae (earless seals) for the 14 measurements, indicating the need for family-specific regression equations. The PIC analysis found that phylogeny had a minor influence on relationship between morphological variables and body size. The regressions for total length were more accurate than those for body mass, and equations specific to Otariidae were more accurate than those for Phocidae. Of the three multivariate methods, the all-subsets approach required the fewest number of variables to estimate body size accurately. We then used the single variable predictive equations and the all-subsets approach to estimate the body size of two recently extinct pinniped taxa, the Caribbean monk seal (Monachus tropicalis) and the Japanese sea lion (Zalophus japonicus). Body size estimates using single variable regressions

  12. Glass sealing

    Energy Technology Data Exchange (ETDEWEB)

    Brow, R.K.; Kovacic, L.; Chambers, R.S. [Sandia National Labs., Albuquerque, NM (United States)

    1996-04-01

    Hernetic glass sealing technologies developed for weapons component applications can be utilized for the design and manufacture of fuel cells. Design and processing of of a seal are optimized through an integrated approach based on glass composition research, finite element analysis, and sealing process definition. Glass sealing procedures are selected to accommodate the limits imposed by glass composition and predicted calculations.

  13. Mechanical seals

    CERN Document Server

    Mayer, E

    1977-01-01

    Mechanical Seals, Third Edition is a source of practical information on the design and use of mechanical seals. Topics range from design fundamentals and test rigs to leakage, wear, friction and power, reliability, and special designs. This text is comprised of nine chapters; the first of which gives a general overview of seals, including various types of seals and their applications. Attention then turns to the fundamentals of seal design, with emphasis on six requirements that must be considered: sealing effectiveness, length of life, reliability, power consumption, space requirements, and c

  14. Caribbean ,More than Myths

    Institute of Scientific and Technical Information of China (English)

    Alice Ou

    2008-01-01

    @@ Have you ever watched the movie of Pirates of the Caribbean?This Hollywood movie hit several headlines in its time and pushed a charming and mysterious Caribbean under limelight.The Latin America and the Caribbean area caught the world's eyesight,so from China.On February 27th,the fourth session of CASS (Chinese Academy of Social Sciences)International Forum focus on Latin America and the Caribbean affairs was heldin Beijing,China.

  15. The Epistle of Cornelius, a Monk of the Snetogorsky Monastery

    Directory of Open Access Journals (Sweden)

    Valentina I. Okhotnikova

    2015-08-01

    Full Text Available This article deals with the problem of the dating and authorship of the Epistle of Cornelius, a monk of the Snetogorsky monastery, to his spiritual son, the priest Ivan, who decided to marry for a second time “for childbearing.” Nikolai I. Serebriansky dated the Epistle to the 1590s (this dating also was shared by subsequent researchers, based on the assertion that during the life of Ivan the Terrible, Cornelius would hardly have dared to write that tsars who violate the laws of the Church regarding the termination and conclusion of a second marriage would be punished by the birth of an heir who “will trample everything and will be an initiator of every evil deed.” The identification of the sources describing both the heir’s evil deeds and other parts of the text allows us to refine the dating of the Epistle. Cornelius finds arguments for the condemnation of his spiritual son’s decision to remarry not only in Scripture but also in contemporary hagiographic and publicistic works that date back to a period of time from the beginning of the 16th century to the 1540s: the Life of Euphrosynus of Pskov (the Story about Halleluiah, no later than 1510; the Epistle of Maximus the Greek to Fedor Karpov about Leviathan, dated between 1518 and 1525; the Epistle of Mark, patriarch of Jerusalem (from the Excerpt about the Second Marriage of Grand Prince Vasily III, from the 1540s. Such a concentration of works from a specific period of time suggests that the Epistle of Cornelius itself was written at about the same time. Most likely, the Cornelius who is identified as the author of the Epistle is the Cornelius listed as the former abbot of the Snetogorsky monastery in the 1562 record inscribed in the Gospel manuscript from the collection of the Russian State Library, f. 205, No. 29. Monk Cornelius could have written the Epistle no earlier than in 1525 and no later than in 1562, when he was no longer either a monk or the abbot of the Snetogorsky

  16. Facebook as a monastic place? The new use of internet by Catholic monks

    Directory of Open Access Journals (Sweden)

    Isabelle Jonveaux

    2013-01-01

    Full Text Available Although Catholic monasteries are theoretically out of the world, monks and nuns more and more use the internet, both for religious and non-religious reasons. While society at large often takes it for granted that monks are out of modernity, monastic communities have been adopted media from relatively early on, and we cannot say that they have come late to its use. The internet can offer monasteries a lot of advantages because it allows monks to be in the world without going out of the cloister. Nevertheless, the introduction of this new media in monasteries also raises a lot of questions about the potential contradictions it poses with other aspects of monastic life. The paper seeks to research the use of the medium by monks and nuns even in their daily lives, and attempts especially to investigate the potential changes it brings to monastic life.

  17. Oral hygiene and periodontal status among Terapanthi Svetambar Jain monks in India

    OpenAIRE

    Manish Jain; Anmol Mathur; Santhosh Kumar; Prabu Duraiswamy; Suhas Kulkarni

    2009-01-01

    The main objective of the study was to determine the oral hygiene levels and periodontal status among Jain monks attending a Chaturmass in Udaipur, India. To date, no study has been conducted on Jain monks. The study comprises of 180 subjects and the overall response rate was 76% among them. Oral hygiene status was assessed by the Simplified Oral Hygiene Index (OHI-S) of Greene, Vermillion14 (1964), and periodontal status was assessed by the Community Periodontal Index. Additional information...

  18. Growth curves and their implications in hand-fed Monk parrots (Myiopsitta monachus

    Directory of Open Access Journals (Sweden)

    Petzinger C

    2015-10-01

    Full Text Available Christina Petzinger,1,2 J Jill Heatley,3 John E Bauer1,2 1Comparative Animal Nutrition Research Laboratory, Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, 2Intercollegiate Faculty of Nutrition, Texas A&M University, 3Zoological Medicine Service, Department of Small Animal Medicine and Surgery, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA Abstract: Monk parrots (Myiopsitta monachus were hand-fed over two chick seasons spanning of 2010 to 2011. Information from the growth curve of chicks hand-fed in 2010 was used to develop a feeding protocol for the 2011 season (Protocol-2011. This protocol addressed the problems of delayed followed by excessive growth experienced by parrots hand fed in 2010. Monk parrots that were hand-fed in 2011 following the new protocol experienced delayed growth after 20 days of age. However, some Monk parrots were fed in excess of Protocol-2011 and did not experience a major delay in growth. The energy requirement equations used to construct Protocol-2011 were low when compared to adult Monk parrot maintenance energy requirements. The data suggest that growing birds do not require approximately twice their adult maintenance energy requirements, as is the case for growing dogs. Additionally, there appear to be fluctuations in energy needs as Monk parrots grow. A major increase in energy needs occurred between days 18 and 23 posthatching, which corresponds to feather development and growth in Monk parrot chicks. Thus, multiple equations estimating energy requirements, rather than just one equation, are likely needed from hatching to fledging in order to ensure adequate energy is provided to chicks. More research on the energy requirements of growing Monk parrots, especially around the time of fledging and weaning, is needed to improve hand-fed methods and potentially the adult health of hand-fed birds. Keywords

  19. Ferrules seals

    Science.gov (United States)

    Smith, James L.

    1984-01-01

    A device is provided for sealing an inner tube and an outer tube without excessively deforming the tubes. The device includes two ferrules which cooperate to form a vacuum-tight seal between the inner tube and outer tube and having mating surfaces such that overtightening is not possible.

  20. Seal Counts

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Database of seal counts from aerial photography. Counts by image, site, species, and date are stored in the database along with information on entanglements and...

  1. Were Byzantine monks of the 13th-15th centuries holders of imperial grants?

    Directory of Open Access Journals (Sweden)

    Maniati-Kokkini Triantafyllitsa

    2013-01-01

    Full Text Available A small number of imperial grants to monks appear in the Byzantine sources from the late 13th to the 15th centuries, and mainly in the 14th, before the Serbian expansion in Macedonia. Especially privileged with the right of bequeathal and dedication, they were given later to the monastery to which each of the monks belonged, mostly to the Serbian monastery of Chilandar in Athos. Due to characteristic differences they represent a special category between the pronoiai of laymen and the oikonomiai of monasteries.

  2. Development of the Superaltricial Monk Parakeet (Aves, Psittaciformes): Embryo Staging, Growth, and Heterochronies.

    Science.gov (United States)

    Carril, Julieta; Tambussi, Claudia P

    2015-11-01

    Knowledge about the embryonic stages of birds is important in answering many questions about development and evolution. We give the first description of 41 embryological stages of the monk parakeet (Myiopsitta monachus) on the basis of external morphology and comparison with the chicken. We also provide measurements of some external morphological characters (i.e. body mass, crown-rump, beak, forelimb, and third toe lengths) and perform comparisons with other precocial and altricial birds with the aim of identifying heterochronous developmental features. The following differences in the development of characters in the monk parakeet when compared with other birds were found: (1) delay of the feathers primordia, (2) wing buds initially greater than leg buds, (3) forelimbs and hindlimbs with similar relative size, (4) retroversion of the toe IV, (5) ventral curvature of the upper jaw, (6) positive regressions between stages and beak length with acceleration and higher values and III toe lengths with deceleration and lower values in the monk parakeet compared to the chicken. The growth pattern of the monk paraket Myiopsitta monachus could be influenced by some heterochronic processes like post-displacement, acceleration and/or deceleration. Results of this research allow the standard identification of stages in different species of parrots, recognize similarities and differences between precocial (the chicken) and altricial species (Myiopsitta), and provide planning data for future studies. PMID:26267228

  3. Oral hygiene and periodontal status among Terapanthi Svetambar Jain monks in India

    Directory of Open Access Journals (Sweden)

    Manish Jain

    2009-12-01

    Full Text Available The main objective of the study was to determine the oral hygiene levels and periodontal status among Jain monks attending a Chaturmass in Udaipur, India. To date, no study has been conducted on Jain monks. The study comprises of 180 subjects and the overall response rate was 76% among them. Oral hygiene status was assessed by the Simplified Oral Hygiene Index (OHI-S of Greene, Vermillion14 (1964, and periodontal status was assessed by the Community Periodontal Index. Additional information was collected regarding food habits, education level and oral hygiene habits. Analysis of variance (ANOVA, Chi Square Test and Step-wise multiple linear regression analysis were carried out using SPSS Software (11.0. The results showed that the oral hygiene status of Jain monks was poor and only 5.6% of the subjects had good oral hygiene. Overall periodontal disease prevalence was 100% with bleeding and shallow pocket contributing a major part (72.8% among all the age groups (p < 0.001. Multiple linear regression analysis revealed that oral hygiene habits, caloric intake and education level explained a variance of 11.7% for the Oral hygiene index collectively. The findings confirmed that Jain monks have poor oral hygiene and an increased prevalence of periodontal disease compared to that of the similarly aged general population because, as a part of their religion, many Jain individuals avoid brushing their teeth especially during fasting, keeping in mind not to harm the microorganisms present in the mouth.

  4. Caribbean development: an overview

    Directory of Open Access Journals (Sweden)

    Paul Sutton

    2008-12-01

    Full Text Available Reviews development in the Caribbean, especially since 1990 to the present, and highlights future development prospects. Author discusses 2 reports from 2005 on present developments problems in the Caribbean region: the economics-focussed 'A time to choose: Caribbean development in the 21st century' by the World Bank, and the UN ECLAC report 'The Millennium Development Goals: a Latin American and Caribbean perspective', with a broader, also social and political, development agenda. He relates what both reports recommend for the Caribbean on the basis of their evaluations of past development. The World Bank report advocates a move toward the services sector, including tourism, offshore education, ICT services, and health services as most viable. The ECLAC report notes some social and political advances in comparison to other developing countries, but also remaining problems and inequalities. The author finds that the World Bank report's neoliberal, one-size-fits-all approach is not mindful of specific Caribbean realities, while the ECLAC study is more sensitive to local realities, and espouses a mixed economy. He thus considers the ECLAC approach preferable, but argues that it needs to go further, as it excludes Cuba and Haiti as atypical states.

  5. Improvements to the subgroup option and the QA of MONK5W

    International Nuclear Information System (INIS)

    This report covers the changes that have been made to MONK5W since release 5A. These include an improved SUBGROUP treatment which removes the approximations inherent in previous versions of the code and which reduces the storage requirements which had previously made some calculations impossible to perform. A minor error has also been corrected which occurred when using P0 scattering with NOVICE data. Furthermore 13 minor code changes have been made which are mainly additional user error traps, or user hidden changes to improve the code probability. However 3 were minor bug corrections: an incorrect output format; an incorrect calculation of the standard deviation on the flux and an overwriting problem for large storage burnup calculations. Finally, one of the largest and most varied verification and validation exercises ever to be performed with MONK5W has been done. This exercise used the MONK5W QA database which has been previously reported. It contains a hundred test cases which have been specially designed to provide a testbed and some method of determining the range of the validity of the MONK5W package. The code has been improved so that it can be applied more successfully to a wider range of problems. Together with the vigorous testing of the code, MONK5W is now in a better shape than it has ever been. The improvements are important because users can use the code in circumstances where previously it could not be used. The stringent testing is important because users now demand a better quality assessed package than was once acceptable. (author)

  6. Python fiber optic seal

    Energy Technology Data Exchange (ETDEWEB)

    Ystesund, K.; Bartberger, J.; Brusseau, C.; Fleming, P.; Insch, K.; Tolk, K.

    1993-08-01

    Sandia National Laboratories has developed a high security fiber optic seal that incorporates tamper resistance features that are not available in commercial fiber optic seals. The Python Seal is a passive fiber optic loop seal designed to give indication of unauthorized entry. The seal includes a fingerprint feature that provides seal identity information in addition to the unique fiber optic pattern created when the seal is installed. The fiber optic cable used for the seal loop is produced with tamper resistant features that increase the difficulty of attacking that component of a seal. A Seal Reader has been developed that will record the seal signature and the fingerprint feature of the seal. A Correlator software program then compares seal images to establish a match or mismatch. SNL is also developing a Polaroid reader to permit hard copies of the seal patterns to be obtained directly from the seal.

  7. Ring the bell for Matins: circadian adaptation to split sleep by cloistered monks and nuns.

    Science.gov (United States)

    Arnulf, Isabelle; Brion, Agnès; Pottier, Michel; Golmard, Jean-Louis

    2011-12-01

    Cloistered monks and nuns adhere to a 10-century-old strict schedule with a common zeitgeber of a night split by a 2- to 3-h-long Office (Matins). The authors evaluated how the circadian core body temperature rhythm and sleep adapt in cloistered monks and nuns in two monasteries. Five monks and five nuns following the split-sleep night schedule for 5 to 46 yrs without interruption and 10 controls underwent interviews, sleep scales, and physical examination and produced a week-long sleep diary and actigraphy, plus 48-h recordings of core body temperature. The circadian rhythm of temperature was described by partial Fourier time-series analysis (with 12- and 24-h harmonics). The temperature peak and trough values and clock times did not differ between groups. However, the temperature rhythm was biphasic in monks and nuns, with an early decrease at 19:39 ± 4:30 h (median ± 95% interval), plateau or rise of temperature at 22:35 ± 00:23 h (while asleep) lasting 296 ± 39 min, followed by a second decrease after the Matins Office, and a classical morning rise. Although they required alarm clocks to wake-up for Matins at midnight, the body temperature rise anticipated the nocturnal awakening by 85 ± 15 min. Compared to the controls, the monks and nuns had an earlier sleep onset (20:05 ± 00:59 h vs. 00:00 ± 00:54 h, median ± 95% confidence interval, p= .0001) and offset (06:27 ± 0:22 h, vs. 07:37 ± 0:33 h, p= .0001), as well as a shorter sleep time (6.5 ± 0.6 vs. 7.6 ± 0.7 h, p= .05). They reported difficulties with sleep latency, sleep duration, and daytime function, and more frequent hypnagogic hallucinations. In contrast to their daytime silence, they experienced conversations (and occasionally prayers) in dreams. The biphasic temperature profile in monks and nuns suggests the human clock adapts to and even anticipates nocturnal awakenings. It resembles the biphasic sleep and rhythm of healthy volunteers transferred to a short (10-h) photoperiod and provides

  8. Growth curves and their implications in hand-fed Monk parrots (Myiopsitta monachus)

    OpenAIRE

    Petzinger C; Heatley JJ; Bauer JE

    2015-01-01

    Christina Petzinger,1,2 J Jill Heatley,3 John E Bauer1,2 1Comparative Animal Nutrition Research Laboratory, Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, 2Intercollegiate Faculty of Nutrition, Texas A&M University, 3Zoological Medicine Service, Department of Small Animal Medicine and Surgery, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA Abstract: Monk parrots (Myiopsitta ...

  9. Growth curves and their implications in hand-fed Monk parrots (Myiopsitta monachus)

    OpenAIRE

    Heatley, J. Jill; Bauer, John; Petzinger,Christina

    2015-01-01

    Christina Petzinger,1,2 J Jill Heatley,3 John E Bauer1,2 1Comparative Animal Nutrition Research Laboratory, Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, 2Intercollegiate Faculty of Nutrition, Texas A&M University, 3Zoological Medicine Service, Department of Small Animal Medicine and Surgery, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA Abstract: Monk parrots (Myi...

  10. Caribbean Land Molluscs: Streptaxidae

    NARCIS (Netherlands)

    Venmans, L.A.W.C.

    1963-01-01

    The material on which the present paper is based consists of a small number of Streptaxidae collected by Dr. P. WAGENAAR HUMMELINCK during his visits to the Caribbean Islands and the mainland of Venezuela since 1930, and further of some specimens which, at various times, have reached the author thro

  11. Depictions of holy monks in the western bay of the Church of the Virgin in Studenica

    Directory of Open Access Journals (Sweden)

    Živković Miloš

    2015-01-01

    Full Text Available The study is dedicated to the figures of holy monks in the west bay of the Church of the Virgin in Studenica, painted during the restoration of the original murals in 1568. The paper seeks to establish the identity of some saints who were previously incorrectly identified, as well as the identity of those who were unobserved in previous studies. It also discusses to what extent the choice of holy monks to be depicted was determined by the original iconographic program. The research results confirm the hypothesis that has for long been present in scholarly literature; according to it, during the restoration of frescoes in the Studenica katholikon, the painters largely repeated the original painted program. Nevertheless, judging by the example of the holy monks depicted in west bay, it may be concluded that in some cases they departed from the original iconographic program. In selecting new saints to be depicted they must have relied on the Menologion. [Projekat Ministarstva nauke Republike Srbije, br. 177032: Tradicija, inovacija i identitet u vizantijskom svetu

  12. Regenerator seal

    Science.gov (United States)

    Davis, Leonard C.; Pacala, Theodore; Sippel, George R.

    1981-01-01

    A method for manufacturing a hot side regenerator cross arm seal assembly having a thermally stablilized wear coating with a substantially flat wear surface thereon to seal between low pressure and high pressure passages to and from the hot inboard side of a rotary regenerator matrix includes the steps of forming a flat cross arm substrate member of high nickel alloy steel; fixedly securing the side edges of the substrate member to a holding fixture with a concave surface thereacross to maintain the substrate member to a slightly bent configuration on the fixture surface between the opposite ends of the substrate member to produce prestress therein; applying coating layers on the substrate member including a wear coating of plasma sprayed nickel oxide/calcium flouride material to define a wear surface of slightly concave form across the restrained substrate member between the free ends thereon; and thereafter subjecting the substrate member and the coating thereon to a heat treatment of 1600.degree. F. for sixteen hours to produce heat stabilizing growth in the coating layers on the substrate member and to produce a thermally induced growth stress in the wear surface that substantially equalizes the prestress in the substrate whereby when the cross arm is removed from the fixture surface following the heat treatment step a wear face is formed on the cross arm assembly that will be substantially flat between the ends.

  13. Ordaining for Learning Culture: Educational Conservation and Development of Buddhist Monk Universities for Isan People with Limited Opportunity

    Directory of Open Access Journals (Sweden)

    Sanit Sumhiram

    2012-01-01

    Full Text Available Problem statement: Buddhist monk universities in Isan (northeast Thailand have problems of lacking Buddhist monk students. The number of people ordained for learning decreases because Isan people do not like ordaining for learning. In order to adjust the condition of problem to catch up with current conditions, this research study was conducted. The purpose of this research was to examine the background, current conditions, problems and process of conserving and developing ordaining for learning at Buddist monk universities for people with limited opportunity in Isan. Approach: The research area covered Khon Kaen, Nakhon Ratchasima and Roi Et provinces. Each of these provinces had campuses of the 2 Buddhist monk universities located in the same province. These universities had continuously been proving education at the undergraduate and graduate studies level up to present. The research procedure used the qualitative research methodology. Data were collected from documents, related literature and field studies using survey, observation, interviews and focus group discussion from a group of totally 208 informants. The findings were presented by means of a descriptive analysis. Results: There were 2 universities: (1 Mahachulalongkornrajavidyalaya University provided education at 3 locations: Khon Kaen Campus, first offered in 1986; Nakhon Ratchasima Campus, first established in 1987 and Roi Et Classroom, first established in 1999 according to the project for classroom extension by Khon Kaen Campus. (2 Mahamakut Buddhist University provided education at 3 locations: Isan Campus, located in Khon Kaen province, first established in 1990; Roi Et Campus, first established in 1994 and Koraj Education Center, located in Nakhon Ratchasima province, first established in 2006. For current conditions and problems of ordaining for learning at Buddhist monk universities for people with limited opportunity in Isan, Mahachulalongkornrajavidyalaya University at

  14. 清代蒙古僧侣贵族述论%Mongolian Monks of Noble of Qing Dynasty

    Institute of Scientific and Technical Information of China (English)

    王力

    2012-01-01

    清代蒙古社会僧侣贵族的产生,主要有蒙古王公贵族出家为僧、西藏高僧活佛转世以及中央政府册封等,这三种途径既相互交织,又各具特色。僧侣贵族的形成,不仅改变了蒙古的社会结构,而且在一定程度上对蒙古社会的发展产生了重要影响。%Based on the various literature material, this article discusses the Mongolian social monks noble formed way and its ihtluence in Qing Dynasty. produced way of monks noble, basically have Mongolia nobility Mongolian took vows to become a monk, reincarnation of Tibetan monks and the central government conferring, the three kind of way is mutually intertwined, and each has its own characteristics. The formation of the monks noble, not only change the Mongolian social structure, and to a certain extent to the development of Mongolian society has produced important influence.

  15. Rodents of the Caribbean

    DEFF Research Database (Denmark)

    Fabre, Pierre-Henri; Mouatt, Julia Thidamarth Vilstrup; Raghavan, Maanasa;

    2014-01-01

    The Capromyidae (hutias) are endemic rodents of the Caribbean and represent a model of dispersal for non-flying mammals in the Greater Antilles. This family has experienced severe extinctions during the Holocene and its phylogenetic affinities with respect to other caviomorph relatives are still ...... (Bahamas, Cuba, Jamaica) hutias. Recent divergences among these western hutias suggest Plio-Pleistocene dispersal waves associated with glacial cycles....

  16. Seal design alternatives study

    International Nuclear Information System (INIS)

    This report presents the results from a study of various sealing alternatives for the WIPP sealing system. Overall, the sealing system has the purpose of reducing to the extent possible the potential for fluids (either gas or liquid) from entering or leaving the repository. The sealing system is divided into three subsystems: drift and panel seals within the repository horizon, shaft seals in each of the four shafts, and borehole seals. Alternatives to the baseline configuration for the WIPP seal system design included evaluating different geometries and schedules for seal component installations and the use of different materials for seal components. Order-of-magnitude costs for the various alternatives were prepared as part of the study. Firm recommendations are not presented, but the advantages and disadvantages of the alternatives are discussed. Technical information deficiencies are identified and studies are outlined which can provide required information

  17. Seal design alternatives study

    Energy Technology Data Exchange (ETDEWEB)

    Van Sambeek, L.L. [RE/SPEC Inc., Rapid City, SD (US); Luo, D.D.; Lin, M.S.; Ostrowski, W.; Oyenuga, D. [Parsons Brinckerhoff Quade & Douglas, Inc., San Francisco, CA (US)

    1993-06-01

    This report presents the results from a study of various sealing alternatives for the WIPP sealing system. Overall, the sealing system has the purpose of reducing to the extent possible the potential for fluids (either gas or liquid) from entering or leaving the repository. The sealing system is divided into three subsystems: drift and panel seals within the repository horizon, shaft seals in each of the four shafts, and borehole seals. Alternatives to the baseline configuration for the WIPP seal system design included evaluating different geometries and schedules for seal component installations and the use of different materials for seal components. Order-of-magnitude costs for the various alternatives were prepared as part of the study. Firm recommendations are not presented, but the advantages and disadvantages of the alternatives are discussed. Technical information deficiencies are identified and studies are outlined which can provide required information.

  18. ANCIENT TIBETAN SEALS

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    In Tibetan,the name for a seal is Thangka.According to records,the word originates from Turkish,initially borrowing from Mongolian and finally absorbed into Tibetan.Various names were given to seals in Tibetan.Official seals are generally named Thangka,or Kathang in honorific dialect;personal seals referred to as Gyithang;general seals are called Dathang or Sethang.

  19. Rotary shaft sealing assembly

    Science.gov (United States)

    Dietle, Lannie L.; Schroeder, John E.; Kalsi, Manmohan S.; Alvarez, Patricio D.

    2010-09-21

    A rotary shaft sealing assembly in which a first fluid is partitioned from a second fluid in a housing assembly having a rotary shaft located at least partially within. In one embodiment a lip seal is lubricated and flushed with a pressure-generating seal ring preferably having an angled diverting feature. The pressure-generating seal ring and a hydrodynamic seal may be used to define a lubricant-filled region with each of the seals having hydrodynamic inlets facing the lubricant-filled region. Another aspect of the sealing assembly is having a seal to contain pressurized lubricant while withstanding high rotary speeds. Another rotary shaft sealing assembly embodiment includes a lubricant supply providing a lubricant at an elevated pressure to a region between a lip seal and a hydrodynamic seal with a flow control regulating the flow of lubricant past the lip seal. The hydrodynamic seal may include an energizer element having a modulus of elasticity greater than the modulus of elasticity of a sealing lip of the hydrodynamic seal.

  20. A positive Monk formula in the S^1-equivariant cohomology of type A Peterson varieties

    CERN Document Server

    Harada, Megumi

    2009-01-01

    Peterson varieties are a special class of Hessenberg varieties that have been extensively studied e.g. by Peterson, Kostant, and Rietsch, in connection with the quantum cohomology of the flag variety. In this manuscript, we develop a generalized Schubert calculus, and in particular a positive Chevalley-Monk formula, for the ordinary and Borel-equivariant cohomology of the Peterson variety $Y$ in type $A_{n-1}$, with respect to a natural $S^1$-action arising from the standard action of the maximal torus on flag varieties. As far as we know, this is the first example of positive Schubert calculus beyond the realm of Kac-Moody flag varieties $G/P$. Our main results are as follows. First, we identify a computationally convenient basis of $H^*_{S^1}(Y)$, which we call the basis of Peterson Schubert classes. Second, we derive a manifestly positive, integral Chevalley-Monk formula for the product of a cohomology-degree-2 Peterson Schubert class with an arbitrary Peterson Schubert class. Both $H^*_{S^1}(Y)$ and $H^*(...

  1. Magnetically Actuated Seal Project

    Data.gov (United States)

    National Aeronautics and Space Administration — FTT proposes development of a magnetically actuated dynamic seal. Dynamic seals are used throughout the turbopump in high-performance, pump-fed, liquid rocket...

  2. The Dual Role a Buddhist Monk Played in the American South: The Balance between Heritage and Citizenship in the Refugee Community

    Directory of Open Access Journals (Sweden)

    Daniel Rhodes

    2016-05-01

    Full Text Available Buddhist Monks in Vietnam struggle with cultural preservation differently from a monk in the U.S. where the forces of acculturation for new arrivals, often refugees, are extraordinarily overwhelming. The author provides a case study examining how Buddhist leaders engage in cultural preservation and community building in the American South. Fusing ideas of Engaged Buddhism and community building, the author will demonstrate how a Buddhist monk is able to navigate the broader American culture and assist Vietnamese immigrants and refugees to acculturate, while maintaining their own cultural heritage, beliefs and religious traditions; ultimately building a viable and sustainable Buddhist community that contributes greatly to its new host community.

  3. Satellite Teleconferencing in the Caribbean.

    Science.gov (United States)

    Sankar, Hollis C.

    1985-01-01

    Discusses the need for, and the development, use, and future trends of, the University of the West Indies Distance Teaching Experiment, which utilizes telephone and communications satellite technology teleconferencing to extend educational opportunities to the peoples of the Caribbean. (MBR)

  4. The World of Monks and Nuns' Feelings%僧尼的情感世界

    Institute of Scientific and Technical Information of China (English)

    尹变英

    2012-01-01

    清代八旗子弟书《思凡》《僧尼会》和冯至的诗歌《帷幔》《寺门之前》,都是以寺院中的僧人和尼姑的情感世界作为抒写对象的,都写出了僧尼生活的清苦孤寂,他们对世俗生活的向往。写于清代的子弟书《思凡》《僧尼会》承载的是世俗人们对美好生活的简单向往,而冯至的《帷幔》《寺门之前》则是诗人对生命痛苦本质的追问。所以,清代的子弟书《思凡》《僧尼会》泼辣而大胆,五四后冯至的《帷幔》《寺门之前》却感伤而凄楚。%This paper compared the Zidishu of the Eight Banners in the Qing Dynasty: Looking forward to Love,Perfect Time of the Monk and the Nun with FENG Zhi's poems: Purdah,Before the temple's door.These works all expressed the complex feelings of monks and nuns,who all lived a lonely life and looked forward to the happy life.Looking forward to Love,Perfect Time of the Monk and the Nun written in the Qing Dynasty dealt with people's sheer looking forward to a happy life,while FENG Zhi's poems Purdah,Before the Temple's Door revealed the poet's quest for nature of life agony.So the Zidishu in the Qing Dynasty were written in a strong and bold literary style,while Purdah,Before the Temple's Door after the May 4th Movement in a sentimental and miserable way.

  5. Lipid metabolic dose response to dietary alpha-linolenic acid in monk parrot (Myiopsitta monachus).

    Science.gov (United States)

    Petzinger, Christina; Heatley, J J; Bailey, Christopher A; Bauer, John E

    2014-03-01

    Monk parrots (Myiopsitta monachus) are susceptible to atherosclerosis, a progressive disease characterized by the formation of plaques in the arteries accompanied by underlying chronic inflammation. The family of n-3 fatty acids, especially eicosapentaenoic acid (20:5n-3, EPA) and docosahexaenoic acid (22:6n-3, DHA), have consistently been shown to reduce atherosclerotic risk factors in humans and other mammals. Some avian species have been observed to convert α-linolenic acid (18:3n-3, ALA) to EPA and DHA (Htin et al. in Arch Geflugelk 71:258-266, 2007; Petzinger et al. in J Anim Physiol Anim Nutr, 2013). Therefore, the metabolic effects of including flaxseed oil, as a source of ALA, in the diet at three different levels (low, medium, and high) on the lipid metabolism of Monk parrots was evaluated through measuring plasma total cholesterol (TC), free cholesterol (FC), triacylglycerols (TAG), and phospholipid fatty acids. Feed intake, body weight, and body condition score were also assessed. Thus the dose and possible saturation response of increasing dietary ALA at constant linoleic acid (18:2n-6, LNA) concentration on lipid metabolism in Monk parrots (M. monachus) was evaluated. Calculated esterified cholesterol in addition to plasma TC, FC, and TAG were unaltered by increasing dietary ALA. The high ALA group had elevated levels of plasma phospholipid ALA, EPA, and docosapentaenoic acid (DPAn-3, 22:5n-3). The medium and high ALA groups had suppressed plasma phospholipid 20:2n-6 and adrenic acid (22:4n-6, ADA) compared to the low ALA group. When the present data were combined with data from a previous study (Petzinger et al. in J Anim Physiol Anim Nutr, 2013) a dose response to dietary ALA was observed when LNA was constant. Plasma phospholipid ALA, EPA, DPAn-3, DHA, and total n-3 were positively correlated while 20:2n-6, di-homo-gamma-linoleic acid (20:3n-6Δ7), arachidonic acid (20:4n-6), ADA, and total n-6 were inversely correlated with dietary en% ALA. PMID

  6. Low Cost, Durable Seal

    Energy Technology Data Exchange (ETDEWEB)

    Roberts, George; Parsons, Jason; Friedman, Jake

    2010-12-17

    Seal durability is critical to achieving the 2010 DOE operational life goals for both stationary and transportation PEM fuel cell stacks. The seal material must be chemically and mechanically stable in an environment consisting of aggressive operating temperatures, humidified gases, and acidic membranes. The seal must also be producible at low cost. Currentlyused seal materials do not meet all these requirements. This project developed and demonstrated a high consistency hydrocarbon rubber seal material that was able to meet the DOE technical and cost targets. Significant emphasis was placed on characterization of the material and full scale molding demonstrations.

  7. VAK III. Seals and sealing system

    International Nuclear Information System (INIS)

    This report presents the VAK III seals and sealing system, which have been used over a period of two years at the Kahl nuclear facility (Federal Republic of Germany), where field tests and feasibility studies were conducted in order to offer a possible solution for the sealing of LWR fuel assemblies. It has been prepared with the aim of an assessment study to be done at the IAEA. It gives all characteristics and technical descriptions for: the sealing principle, the seal construction, the operating tools, the data processing, the drawings, the publications related to that seal. The main points of progress are: the Strong Random Internal Defects (STRID) incorporated in the seals, allowing the obtention of a good signature stability; the Integrity Check on the Seal Status (broken or not) obtained through a decisive mechanical improvement: the Double Breakage Integrity Check (DOBRIC) and with a better ultrasonic evidence of that status; the provision of new function tools, allowing the performance of Identity Measurements in dry conditions (which means also at the manufacturer plant) or in deeper water (wet storage); the study and development of a new JRC VAK 45 Compact Instrument Box, in which all the measuring functions can be grouped and incorporating an autonomous Minicomputer offering to the Inspection the possibility of performing, on the spot, Correlation and Decision processes. The general benefit of such a feasibility study should be to convince the potential users that such a Safeguards Sealing System can be studied for slightly - or largely - different other applications, provided that the Basic and Operating Functions required to the system be clearly defined, possibly after a common agreement would be stated

  8. The IRES electronic seal

    International Nuclear Information System (INIS)

    In the framework of the French Support Program for the IAEA Safeguards, the 'Institut de Protection et de Surete Nucleaire' (IPSN), developed an electronic seal called Integrated and Reusable Electronic Seal (IRES) that enables independent verification by different inspectorates (IAEA, Euratom, and National Inspectorate). The seal can be remotely interrogated by radio frequency and integrated to other Containment/surveillance systems by serial line RS 485. Data are authenticated and the IRESMAG software manages in the seal reader all functionalities of the seal and records inspection data compatible with the IAEA's Seal Database. To perform this development, IPSN relies on industrial partners: SAPHYMO for the general architecture of the seal and the electronics, THALES for the authentication of data and the security of transmission. The main features of the IRES seal are the following: Interrogation by different inspectorate, allowing independent conclusions; Recording of events, including tampering, in a non-volatile memory; Authentication of data and enhanced security of the communication between the seal and the seal reader; Remote interrogation by an inspector or/and automatic for unattended systems or remote monitoring; Reusable after erasing the seal memory and replacement of the batteries

  9. Severe service sealing solutions

    International Nuclear Information System (INIS)

    Successful sealing usually requires much more than initial leak-tightness. Friction and wear must also be acceptable, requiring a good understanding of tribology at the sealing interface. This paper describes various sealing solutions for severe service conditions. The CAN2A and CAN8 rotary face seals use tungsten carbide against carbon-graphite to achieve low leakage and long lifetime in nuclear main coolant pumps. The smaller CAN6 seal successfully uses tungsten carbide against silicon carbide in reactor water cleanup pump service. Where friction in CANDU fuelling machine rams must be essentially zero, a hydrostatic seal using two silicon carbide faces is the solution. In the NRU reactor moderator pumps, where pressure is much lower, eccentric seals that prevent boiling at the seal faces are giving excellent service. All these rotary face seals rely on supplementary elastomer seals between their parts. An integrated engineering approach to high performance sealing with O-rings is described. This is epitomized in critical Space Shuttle applications, but is increasingly being applied in CANDU plants. It includes gland design, selection and qualification of material, quality assurance, detection of defects and the effects of lubrication, surface finish, squeeze, stretch and volume constraints. In conclusion, for the severe service applications described, customized solutions have more than paid for themselves by higher reliability, lower maintenance requirements and reduced outage time. (author)

  10. Zero leakage sealings

    Science.gov (United States)

    Kotesovec, Bernhard; Steinrück, Herbert

    2010-11-01

    The piston rod of a reciprocating compressor is sealed with elastic cylindrical sealing elements. Across the sealings the pressure drops from the operating pressure to the ambient pressure. The lubrication gap between the elastic sealing and reciprocating piston rod is studied with the aim to find conditions of a leakage free sealing. The flow in the lubrication gap and the elastic deformation of the sealing are determined simultaneously. The net-flow during one cycle of the reciprocating piston rod is calculated. It turns out that maintaining zero leakage is very sensible. Indeed the outbound flow during out-stroke has to be equal the inbound flow during the in-stroke. By prescribing a special shape of the undeformed sealing zero leakage can be attained - at least theoretically for certain operating conditions. It turns out that temperature dependent material data and a model for cavitation is necessary. The model, its numerical implementation and results will be discussed.

  11. Artists in and out of the Caribbean

    OpenAIRE

    Sally Price

    1999-01-01

    [First paragraph] Caribbean Art. VEERLE POUPEYE. London: Thames and Hudson, 1998. 224 pp. (Paper US$ 14.95) Transforming the Crown: African, Asian and Caribbean Artists in Britain, 1966-1996. MORA J. BEAUCHAMP-BYRD & M. FRANKLIN SIRMANS (eds.). New York: Caribbean Cultural Center, 1998. 177 pp. (Paper US$ 39.95, £31.95) "Caribbean" (like "Black British") culture is (as a Dutch colleague once said of postmodernism) a bit of a slippery fish. One of the books under ...

  12. Connectivity for Caribbean Countries : An Initial Assessment

    OpenAIRE

    Briceno-Garmendia, Cecilia; Bofinger, Heinrich C.; Cubas, Diana; Millan-Placci, Maria Florencia

    2014-01-01

    Every discussion of the Caribbean states considers their characteristics as sea-locked countries, small economies, highly vulnerable to natural disasters, and a geographic platform that calls for regional cooperation and integration. The Caribbean Sea is the most important vehicle and the most challenging obstacle Caribbean countries have to connect with the world. This report measures and...

  13. Archipelagic American Studies and the Caribbean

    Directory of Open Access Journals (Sweden)

    Brian Russell Roberts

    2013-09-01

    Full Text Available This article, as part of the “American Studies: Caribbean Edition” Special Forum, brings specific focus to the ways in which the Caribbean and the field of Caribbean Studies insists upon a version of American Studies that sheds its post-exceptionalist anti-insularity and, in the process, emerges as transregional and archipelagic.

  14. Some Megadrili Oligochaeta from the Caribbean Region

    NARCIS (Netherlands)

    Righi, Gilberto

    1995-01-01

    Righi, Gilberto, 1995. Some megadrili oligochaeta of the Caribbean Region. Studies Nat. Hist. Caribbean Region 72, Amsterdam, 1993: 47-53. Numerous Caribbean samples of the Megadrili – mainly peregrine anthropochorous species – are presented; and a description of Diachaeta (D) bonairensis sp. n. is

  15. Repository seals requirements study

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-11-03

    The Yucca Mountain Site Characterization Project, managed by the Civilian Radioactive Waste Management System (CRWMS) Management and Operating Contractor (M and O) is conducting investigations to support the Viability Assessment and the License Application for a high-level nuclear waste repository at Yucca Mountain, Nevada. The sealing subsystem is part of the Yucca Mountain Waste Isolation System. The Yucca Mountain Site Characterization Project is currently evaluating the role of the sealing subsystem (shaft, ramp and exploratory borehole seals) in achieving the overall performance objectives for the Waste Isolation System. This report documents the results of those evaluations. This report presents the results of a repository sealing requirements study. Sealing is defined as the permanent closure of the shafts, ramps, and exploratory boreholes. Sealing includes those components that would reduce potential inflows above the repository, or that would divert flow near the repository horizon to allow vertical infiltration to below the repository. Sealing of such features as emplacement drifts was not done in this study because the current capability to calculate fracture flow into the drifts is not sufficiently mature. The objective of the study is to provide water or air flow performance based requirements for shafts, ramps, and exploratory boreholes located near the repository. Recommendations, as appropriate, are provided for developing plans, seals component testing, and other studies relating to sealing.

  16. Foil Face Seal Testing

    Science.gov (United States)

    Munson, John

    2009-01-01

    In the seal literature you can find many attempts by various researchers to adapt film riding seals to the gas turbine engine. None have been successful, potential distortion of the sealing faces is the primary reason. There is a film riding device that does accommodate distortion and is in service in aircraft applications, namely the foil bearing. More specifically a foil thrust bearing. These are not intended to be seals, and they do not accommodate large axial movement between shaft & static structure. By combining the 2 a unique type of face seal has been created. It functions like a normal face seal. The foil thrust bearing replaces the normal primary sealing surface. The compliance of the foil bearing allows the foils to track distortion of the mating seal ring. The foil seal has several perceived advantages over existing hydrodynamic designs, enumerated in the chart. Materials and design methodology needed for this application already exist. Also the load capacity requirements for the foil bearing are low since it only needs to support itself and overcome friction forces at the antirotation keys.

  17. Repository seals requirements study

    International Nuclear Information System (INIS)

    The Yucca Mountain Site Characterization Project, managed by the Civilian Radioactive Waste Management System (CRWMS) Management and Operating Contractor (M and O) is conducting investigations to support the Viability Assessment and the License Application for a high-level nuclear waste repository at Yucca Mountain, Nevada. The sealing subsystem is part of the Yucca Mountain Waste Isolation System. The Yucca Mountain Site Characterization Project is currently evaluating the role of the sealing subsystem (shaft, ramp and exploratory borehole seals) in achieving the overall performance objectives for the Waste Isolation System. This report documents the results of those evaluations. This report presents the results of a repository sealing requirements study. Sealing is defined as the permanent closure of the shafts, ramps, and exploratory boreholes. Sealing includes those components that would reduce potential inflows above the repository, or that would divert flow near the repository horizon to allow vertical infiltration to below the repository. Sealing of such features as emplacement drifts was not done in this study because the current capability to calculate fracture flow into the drifts is not sufficiently mature. The objective of the study is to provide water or air flow performance based requirements for shafts, ramps, and exploratory boreholes located near the repository. Recommendations, as appropriate, are provided for developing plans, seals component testing, and other studies relating to sealing

  18. Applications of quantum message sealing

    CERN Document Server

    Worley, G G

    2005-01-01

    In 2003, Bechmann-Pasquinucci introduced the concept of quantum seals, a quantum analogue to wax seals used to close letters and envelopes. Since then, some improvements on the method have been found. We first review the current quantum sealing techniques, then introduce and discuss potential applications of quantum message sealing, and conclude with some discussion of the limitations of quantum seals.

  19. High Test Peroxide High Sealing Conical Seal Project

    Data.gov (United States)

    National Aeronautics and Space Administration — High Test Peroxide (HTP) Highly Compatible High Sealing Conical Seals are necessary for ground test operations and space based applications. Current conical seals...

  20. Saving Seal Cutting

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    On April 20, the graduation ceremony of China’s seal-cutting art postgraduates and visiting experts from the Institute of Seal Cutting Art under the China Art Academy was held in Beijing. On the same day, the exhibition of the works of the teachers and graduates of the institute was also held.

  1. High temperature hydraulic seals

    Science.gov (United States)

    Williams, K. R.

    1993-05-01

    This program investigated and evaluated high temperature hydraulic sealing technology, including seals, fluids, and actuator materials. Test limits for fluid pressure and temperature were 8000 psi and 700 F respectively. The original plan to investigate CTFE fluid at 350 F as well as other fluids at higher temperatures was reduced in scope to include only the higher temperature investigation. Seals were obtained from 11 manufacturers. Design requirements including materials, dimensions, clearances, and tolerances were established and test modules were constructed from the detail designs which were produced. Nine piston seals and one rod seal were tested at temperatures ranging from -65 to +600 F and pressures to 6000 psi. Fluid performance under these conditions was evaluated. Details of this activity and results of the effort are summarized in this report.

  2. Peelable seals using polybutylene

    Energy Technology Data Exchange (ETDEWEB)

    Hwo, C.C.

    1989-02-28

    A new composition for producing a peelable heat seal between substrates is described comprising a blend of about 6 to about 25 weight percent of polybutylene having a melt index of about 0.1 to about 500, about 2 to about 15 weight percent of polypropylene, and about 60 to about 92 weight percent of a blend of anhydride modified polyethylene with EVA copolymers. The blend, when coated onto nylon at a heat sealing temperature of between about 320/sup 0/F and about 410/sup 0/F as determined at the sealing jaws, affords a peel strength of about 0.4 to about 5 pounds per inch between blend layers heat sealed at the heat sealing temperatures.

  3. Antiproliferative Activity of Triterpene Glycoside Nutrient from Monk Fruit in Colorectal Cancer and Throat Cancer.

    Science.gov (United States)

    Liu, Can; Dai, Longhai; Liu, Yueping; Rong, Long; Dou, Dequan; Sun, Yuanxia; Ma, Lanqing

    2016-06-13

    Colorectal cancer and throat cancer are the world's most prevalent neoplastic diseases, and a serious threat to human health. Plant triterpene glycosides have demonstrated antitumor activity. In this study, we investigated potential anticancer effects of mogroside IVe, a triterpenoid glycoside from monk fruit, using in vitro and in vivo models of colorectal and laryngeal cancer. The effects of mogroside IVe on the proliferation of colorectal cancer HT29 cells and throat cancer Hep-2 cells were determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, and the expression levels of p53, phosphorylated ERK1/2, and MMP-9 were analyzed by western blotting and immunohistochemistry. The results indicated that mogroside IVe inhibited, in a dose-dependent manner, the proliferation of HT29 and Hep-2 cells in culture and in xenografted mice, which was accompanied by the upregulation of tumor suppressor p53, and downregulation of matrix metallopeptidase 9 (MMP-9) and phosphorylated extracellular signal-regulated kinases (ERK)1/2. This study revealed the suppressive activity of mogroside IVe towards colorectal and throat cancers and identified the underlying mechanisms, suggesting that mogroside IVe may be potentially used as a biologically-active phytochemical supplement for treating colorectal and throat cancers.

  4. Antiproliferative Activity of Triterpene Glycoside Nutrient from Monk Fruit in Colorectal Cancer and Throat Cancer

    Directory of Open Access Journals (Sweden)

    Can Liu

    2016-06-01

    Full Text Available Colorectal cancer and throat cancer are the world’s most prevalent neoplastic diseases, and a serious threat to human health. Plant triterpene glycosides have demonstrated antitumor activity. In this study, we investigated potential anticancer effects of mogroside IVe, a triterpenoid glycoside from monk fruit, using in vitro and in vivo models of colorectal and laryngeal cancer. The effects of mogroside IVe on the proliferation of colorectal cancer HT29 cells and throat cancer Hep-2 cells were determined by 3-(4,5-dimethylthiazol-2-yl-2,5-diphenyltetrazolium bromide (MTT assay, and the expression levels of p53, phosphorylated ERK1/2, and MMP-9 were analyzed by western blotting and immunohistochemistry. The results indicated that mogroside IVe inhibited, in a dose-dependent manner, the proliferation of HT29 and Hep-2 cells in culture and in xenografted mice, which was accompanied by the upregulation of tumor suppressor p53, and downregulation of matrix metallopeptidase 9 (MMP-9 and phosphorylated extracellular signal-regulated kinases (ERK1/2. This study revealed the suppressive activity of mogroside IVe towards colorectal and throat cancers and identified the underlying mechanisms, suggesting that mogroside IVe may be potentially used as a biologically-active phytochemical supplement for treating colorectal and throat cancers.

  5. Gland With Cantilever Seal

    Science.gov (United States)

    Melton, Patrick B.

    1989-01-01

    Single-piece gland forms tight seal on probe or tube containing liquid or gas at high pressure. Gland and probe align as assembled by simple torquing procedure. Disconnected easily and reused at same site. Made from any of wide variety of materials so compatible with application. Cantilever ring at top of gland bites into wall of tube or probe, sealing it. Wall of tube or probe must be thick enough to accommodate deformation without rupturing. Maximum deformation designed in coordination with seating and deformation of boss or conical seal.

  6. Sealing device for providing a seal in a turbomachine

    Energy Technology Data Exchange (ETDEWEB)

    Lacy, Benjamin Paul; Kottilingam, Srikanth Chandrudu; Porter, Christopher Donald; Schick, David Edward; Weber, David Wayne

    2016-08-16

    Sealing device for providing seals between adjacent components, and turbomachines utilizing such sealing devices, are provided. A sealing device includes a seal plate insertable between the adjacent components, the seal plate comprising a first face and an opposing second face. The sealing device further includes a plurality of pins extending from one of the first face or the second face, the plurality of pins configured to space the one of the first face or the second face from contact surfaces of the adjacent components.

  7. THE INFLUENCE OF MONK EQUIPPED PONDS ON THE QUALITY OF BASIN HEAD STREAMS, THE EXAMPLE OF WATER TEMPERATURE IN LIMOUSIN AND BERRY (FRANCE

    Directory of Open Access Journals (Sweden)

    Laurent TOUCHART

    2010-12-01

    Full Text Available In the centre-west regions of France, the deep water outlet system known as a “monk” is used in 13% of bodies of water. The authorities are strongly encouraging this to increase, arguing that this system would reduce pond induced warming of the hydrographical network. We have measured the water temperature in four monk equipped ponds for 13 years to such an extent that this paper draws on an analysis of 142,200 original measurements. Compared to a surface outflow, a monk is a system which shifts the warming of the emissary water course to the end of summer and the autumn which reduces average annual warming by about 1°C. This reduces the heating of diurnal maxima but increases warming of the minima. A monk equipped pond warms the river with deep water which has acquired its heat by mechanical convection generated by the wind, as opposed to a weir equipped pond which provides surface water warmed by insolation. In winter the monk equipped pond does not damage the thermal living conditions for Fario trout embryos and larvae under the gravel. In summer, the monk prevents night time cooling of the emissary and increases the temperature of the minima excessively for sensitive species.

  8. Cover-gas seals: 11-LMFBR seal-test program

    Energy Technology Data Exchange (ETDEWEB)

    Steele, O.P. III; Horton, P.H.

    1977-01-01

    The objective of the Cover Gas Seal Material Development Program is to perform the engineering development required to provide reliable seals for LMFBR application. Specific objectives are to verify the performance of commercial solid cross-section and inflatable seals under reactor environments including radiation, to develop advanced materials and configurations capable of achieving significant improvement in radioactive gas containment and seal temperature capabilities, and to optimize seal geometry for maximum reliability and minimal gas permeation.

  9. Spotted Seal Distribution Map

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset contains GIS layers that depict the known spatial distributions (i.e., ranges) and reported breeding areas of spotted seals (Phoca largha). It was...

  10. Ribbon Seal Distribution Map

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset contains GIS layers that depict the known spatial distributions (i.e., ranges) and reported breeding areas of ribbon seals (Histriophoca fasciata). It...

  11. Tamper indicating seal

    Science.gov (United States)

    Romero, Juan A.; Walker, Charles A.; Blair, Dianna S.; Bodmer, Connie C.

    2012-05-29

    Seals have a flexible wire that can be looped through a hasp-like device. The seals include a body having a recess, a plug insertable into the recess and a snap ring for fastening the plug to the body. The plug and/or body can have access holes for inserting the wire into the recess. "Teeth" on the outer diameter and through-holes through the thickness of the snap ring allow for passing the ends of the flexible wire from the recess through the snap ring. The ends of the wire can be folded back over the snap ring and into engagement with the teeth. Assembly of the seal causes the ends of the wire to be securely fastened between the teeth of the snap ring and the sidewall of the recess. Seals can include a plug and/or body made of a frangible material such as glass, ceramic, glass-ceramic or brittle polymer.

  12. Ringed Seal Distribution Map

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset contains GIS layers that depict the known spatial distributions (i.e., ranges) of the five subspecies of ringed seals (Phoca hispida). It was produced...

  13. Bearded Seal Distribution Map

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset contains GIS layers that depict the known spatial distributions (i.e., ranges) of the two subspecies of bearded seals (Erignathus barbatus). It was...

  14. Fur seal investigations, 1966

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Annually a report is made on the fur seal investigations carried on by the Bureau of Commercial Fisheries on the Pribilof Islands and at sea. Investigations on the...

  15. Titanium hermetic seals

    Science.gov (United States)

    Brow, Richard K.; Watkins, Randall D.

    1995-01-01

    Titanium is prenitrided by being heated in a nitrogen environment under conditions which give rise to the formation of a titanium-nitride surface layer on the titanium. Titanium thus prenitrided may be used in electrical components which are hermetically sealed using silicate glasses and standard glass sealing techniques. According to the method of the invention, alkali volatilization and formation of deleterious interfacial silicide are inhibited.

  16. The European Union – Caribbean Relation

    DEFF Research Database (Denmark)

    Broberg, Morten

    2016-01-01

    EU diplomats consider the Caribbean countries to be allies and therefore expect these countries to support the EU in international affairs – but they find that this support has been waning in recent years. Caribbean diplomats and politicians do not share the European viewpoint. Rather, they take ...... the view that the EU has forgotten its Caribbean allies and instead channels its attention and funding towards Sub-Saharan Africa. This article examines to what extent this asserted ‘rift’ really signals a profound change in the EU-Caribbean relations....

  17. Parents' and children's acceptance of skim chocolate milks sweetened by monk fruit and stevia leaf extracts.

    Science.gov (United States)

    Li, X E; Lopetcharat, K; Drake, M A

    2015-05-01

    Chocolate milk increases milk consumption of children, but high sugar content raises health concerns. Interest in sugar reduction and parents' preference for natural sweeteners necessitates further research on natural nonnutritive sweeteners. However, it is important to maintain consumer acceptability, especially for children, while reducing sugar in chocolate milk. The objectives of this study were to identify the sweetness intensity perception of stevia leaf (STV) and monk fruit (MK) extracts in skim chocolate milk (SCM), to evaluate STV and MK as the sole or partial sweetener source for SCM for young adults (19 to 35 y) and children (5 to 13 y), and to determine if information on natural nonnutritive sweeteners impacted parents' acceptability of SCM. Power function and 2-alternative forced choice studies were used to determine the iso-sweetness of nonnutritive sweeteners to a sucrose control in SCM (51.4 g/L, SUC control). Young adults (n = 131) evaluated 9 different SCM (SUC control, STV, MK, STV:sucrose blends, or MK:sucrose blends) in a completely randomized 2-d test. Children (n = 167) evaluated SUC control SCM and SCM with 39.7 g/L sucrose and 46 mg/L MK (MK25) or 30 mg/L STV (STV25). Parents evaluated SUC control, MK25, and STV25 in a balanced crossover design with a 40-d wait time between primed or unprimed ballots. Chocolate milks solely sweetened by nonnutritive sweeteners were less acceptable compared with SUC control by young adults. MK25 and STV25 were acceptable by young adults and children. The presentation of chocolate milk label information had different effects on parental acceptance. Traditional parents preferred sucrose sweetened SCM, and label conscious parents preferred SCM with natural nonnutritive sweeteners.

  18. Parents' and children's acceptance of skim chocolate milks sweetened by monk fruit and stevia leaf extracts.

    Science.gov (United States)

    Li, X E; Lopetcharat, K; Drake, M A

    2015-05-01

    Chocolate milk increases milk consumption of children, but high sugar content raises health concerns. Interest in sugar reduction and parents' preference for natural sweeteners necessitates further research on natural nonnutritive sweeteners. However, it is important to maintain consumer acceptability, especially for children, while reducing sugar in chocolate milk. The objectives of this study were to identify the sweetness intensity perception of stevia leaf (STV) and monk fruit (MK) extracts in skim chocolate milk (SCM), to evaluate STV and MK as the sole or partial sweetener source for SCM for young adults (19 to 35 y) and children (5 to 13 y), and to determine if information on natural nonnutritive sweeteners impacted parents' acceptability of SCM. Power function and 2-alternative forced choice studies were used to determine the iso-sweetness of nonnutritive sweeteners to a sucrose control in SCM (51.4 g/L, SUC control). Young adults (n = 131) evaluated 9 different SCM (SUC control, STV, MK, STV:sucrose blends, or MK:sucrose blends) in a completely randomized 2-d test. Children (n = 167) evaluated SUC control SCM and SCM with 39.7 g/L sucrose and 46 mg/L MK (MK25) or 30 mg/L STV (STV25). Parents evaluated SUC control, MK25, and STV25 in a balanced crossover design with a 40-d wait time between primed or unprimed ballots. Chocolate milks solely sweetened by nonnutritive sweeteners were less acceptable compared with SUC control by young adults. MK25 and STV25 were acceptable by young adults and children. The presentation of chocolate milk label information had different effects on parental acceptance. Traditional parents preferred sucrose sweetened SCM, and label conscious parents preferred SCM with natural nonnutritive sweeteners. PMID:25847181

  19. Brian Meeks, Envisioning Caribbean Futures

    Directory of Open Access Journals (Sweden)

    Jay R. Mandle

    2011-06-01

    Full Text Available In this feature we highlight a recently launched book. We invite specialists in the field to comment on the book, and we invite the author to respond to their comments. In this issue we focus on Brian Meeks's, Envisioning Caribbean Futures. Those invited to comment on the book are Jay Mandle and Rivke Jaffe. [First paragraph] In Envisioning Caribbean Futures: Jamaican Perspectives (2007, Brian Meeks writes “in sympathy with the new social movements that have evolved in the past decade which assert boldly that ‘another world is possible’” (p. 2. His effort is “to explore the horizons for different approaches to social living in Jamaica and the Caribbean in the twenty-first century” (p. 2. In this, he “seeks to move beyond a statement of general principles to propose specific alternatives” in order to “stimulate a conversation that looks beyond the horizon of policy confines, yet is not so far removed as to appear hopelessly utopian” (p. 3. My hope with this essay is to advance that conversation, in the first place by reviewing and assessing Meeks’s contribution and then by extending the discussion to the role that Jamaica’s diaspora (and by extension that of the region’s generally might play in moving the country, as Meeks puts it, from its current “state of crime and murder, and the broad undermining of the rule of law that pervades the society” (p. 71.

  20. Sliding seal for mining machine power transmission

    Energy Technology Data Exchange (ETDEWEB)

    Levenstein, V.M.

    1993-07-06

    A generally tubular sealing mechanism is described for use in the power train of a mining machine to seal between an annular seal face on one of two spaced apart units in the power train and a sealing ring surface on the other of said units for sealed protection of a drive shaft connected between said two units, said sealing mechanism including a tubular seal carrier with a first end portion having a cylindrical sealing surface for being telescoped with said sealing ring surface, an annular seal element mountable on said cylindrical sealing surface for sealing engagement between said sealing ring surface and said cylindrical sealing surface, said carrier further having a second end portion with a radially extending face, a clamp connectable between said one unit and said carrier for urging said radially extending face toward said annular seal face, and a sealing member mountable in sealing engagement between said annular seal face and said radially extending face.

  1. A Study on the Poetic Communication between Monks in the Song Dynasty%宋代僧人之间诗歌唱和探析

    Institute of Scientific and Technical Information of China (English)

    吕肖奂

    2014-01-01

    宋代僧众内部唱和基本采用教禅话语系统,与僧、俗二众之间唱和大多采用士人话语系统颇不相同,这种内、外有别的话语系统使得僧人唱和具有双重文学形态和审美标准。颂古唱和可以说是僧众内部唱和最具原创性的方式,这种唱和给宋代以士大夫为主流的诗歌唱和增添了新的样态;僧众之间的应请应求、寄赠答谢诗歌让俗众窥探到僧众的生活情状与情感;《东林和尚云门庵主颂古》、《无象照公梦游天台石桥颂轴》、《一帆风》等唱和集的留存,展示出僧众内部唱和的方式与规模。僧众内部唱和为已经十分繁荣的宋代唱和文化增补了更加丰富的方外内涵与形态。%The monks in the Song Dynasty basically used the linguistic system of Buddhism and Zen in their poetic presentation and response which was very different from the linguistic system shared by both monks and men of letters in their poetic presentation and response.Such difference in the linguistic systems used internally and externally made monks obtain double literary pattern and aesthetic standard.The presentation and response of the Buddhist song is the most original form of poetry among the monks adding new literary forms to the poetry presentation and response popular with men of letters.Both the presentation and response in gratitude by means of poetry among the monks showed how lively and passionate the lives of the monks were to men of letters.The Buddhist Song by Donglin Monk The Buddhist song by Wuxiang Zhaogong on His Dream Journey to the Stone Bridge of Tiantai and A Blow of Wind -all these poems show the way and scale of the monks poetic presentation and response.

  2. Regional strategy tested in Caribbean.

    Science.gov (United States)

    1984-01-01

    Barbados, St. Vincent, and St. Lucia have joined forces in the world's 1st regional Contraceptive Social Marketing (CSM) effort -- the Caribbean CSM. The Barbados Family Planning Association (BFPS) is overseeing the operation, which begins selling 2 contraceptive pills and a condom in early February. Costs and start-up times were shaved by adopting brand names and advertising materials from Jamaica's highly successful CSM project. Jamaica's popular "Panther" condom and "Perle" oral contraceptive (OC) are being used by the Caribbean CSM project. Perle's 9-year-old package has been redesigned and the Caribbean CSM project also is selling a 2nd, low-dose version called "Perle-LD." The products are manufactured in the US by Syntex as Noriday and Norminest, respectively. But the regional approach's financial gains also had a debit side, most notably a tripling of bureaucratic procedures. Part of project difficulties stem from differences among the 3 Caribbean countries. While sharing a common cultural heritage, St. Lucians speak a patois dialect in addition to the English prevalent on the other islands. The biggest hurdle was overcoming an economic disparity between Barbados and its less affluent neighbors, St. Vincent and St. Lucia. The CSM project decided to try a 2-tier product pricing strategy. In US currency, prices run $1.75 per cycle for both OCs on Barbados, but $1.26 on St. Vincent and St. Lucia. A Panther 3-pack costs 75 cents on Barbados and 42 cents on the othe 2 islands. The project is being promoted with generic family planning media advertisements. The project also has held physician orientation seminars on each island. The pilot program will be accompanied by retailer training seminars. In addition the project may introduce a spermicidal foaming tablet, once the US Food and Drug Administration approvs a new American-made product. The unique Caribbean CSM project may spread an idea as potent as the family planning message. Its success could transmit the

  3. Regional strategy tested in Caribbean.

    Science.gov (United States)

    1984-01-01

    Barbados, St. Vincent, and St. Lucia have joined forces in the world's 1st regional Contraceptive Social Marketing (CSM) effort -- the Caribbean CSM. The Barbados Family Planning Association (BFPS) is overseeing the operation, which begins selling 2 contraceptive pills and a condom in early February. Costs and start-up times were shaved by adopting brand names and advertising materials from Jamaica's highly successful CSM project. Jamaica's popular "Panther" condom and "Perle" oral contraceptive (OC) are being used by the Caribbean CSM project. Perle's 9-year-old package has been redesigned and the Caribbean CSM project also is selling a 2nd, low-dose version called "Perle-LD." The products are manufactured in the US by Syntex as Noriday and Norminest, respectively. But the regional approach's financial gains also had a debit side, most notably a tripling of bureaucratic procedures. Part of project difficulties stem from differences among the 3 Caribbean countries. While sharing a common cultural heritage, St. Lucians speak a patois dialect in addition to the English prevalent on the other islands. The biggest hurdle was overcoming an economic disparity between Barbados and its less affluent neighbors, St. Vincent and St. Lucia. The CSM project decided to try a 2-tier product pricing strategy. In US currency, prices run $1.75 per cycle for both OCs on Barbados, but $1.26 on St. Vincent and St. Lucia. A Panther 3-pack costs 75 cents on Barbados and 42 cents on the othe 2 islands. The project is being promoted with generic family planning media advertisements. The project also has held physician orientation seminars on each island. The pilot program will be accompanied by retailer training seminars. In addition the project may introduce a spermicidal foaming tablet, once the US Food and Drug Administration approvs a new American-made product. The unique Caribbean CSM project may spread an idea as potent as the family planning message. Its success could transmit the

  4. British African Caribbean Women and Depression

    Science.gov (United States)

    Adkison-Bradley, Carla; Maynard, Donna; Johnson, Phillip; Carter, Stephaney

    2009-01-01

    Depression is a common condition among women in the United Kingdom. However, little is known about the context of depression among British African Caribbean women. This article offers a preliminary discussion regarding issues and information pertaining to depression among British African Caribbean women. Characteristics and symptoms of depression…

  5. Uncover the Mysterious Veil of Tibetan Monks Debate%揭开藏僧辩经的神秘面纱

    Institute of Scientific and Technical Information of China (English)

    白玛代青

    2013-01-01

      Simply introduces the process and procedures of the Tibetan Buddhist monks debate, The debate ceremony as well as the body movements and emotions. With the extensive use of the methods and ideas of Anthropology, describes the rules and order and emotional adjustment methods, habits of the people and the function of the debate.In Tibetan Buddhist monks debate, we can see their unbelievable active thinking. this kind of teaching and the unique study methodin is rare outside Tibetan areas. Almost all Tibetan areas identified by the school are opened logic course which as the basic subject of learning other courses has a very important role.%  在藏区的辩经学院中,辩经是学习佛法的一种最为重要的途径。它在僧人的学习过程中是不可或缺的。简单地介绍了藏传佛教僧人辩经的过程和程序,辩经的仪式以及辩论中的身体动作和情绪等。大量利用了人类学的方法和思路,对辩经中遵循的规则和秩序以及人物情绪调整的方法和习性、辩论功能进行了描述。

  6. Sealing coupling. [LMFBR

    Science.gov (United States)

    Pardini, J.A.; Brubaker, R.C.; Rusnak, J.J.

    1982-09-20

    Disclosed is a remotely operable releasable sealing coupling which provides fluid-tight joinder of upper and a lower conduit sections. Each conduit section has a concave conical sealing surface adjacent its end portion. A tubular sleeve having convex spherical ends is inserted between the conduit ends to form line contact with the concave conical end portions. An inwardly projecting lip located at one end of the sleeve cooperates with a retaining collar formed on the upper pipe end to provide swivel capture for the sleeve. The upper conduit section also includes a tapered lower end portion which engages the inside surface of the sleeve to limit misalignment of the connected conduit sections.

  7. Sealing of fractured rock

    International Nuclear Information System (INIS)

    This paper consists of a presentation of the third phase of the Stripa Project. This phase was dedicated to fracture sealing. First of all it has been necessary to show that fine-grained grouts could effectively be injected in relatively fine cracks, and that the fluidity of bentonite could also be enhanced. The field tests comprised investigation of excavation-induced disturbance and attempts to seal disturbed rock, and, in separate tests, grouting of deposition holes and a natural fine-fracture zone. (TEC). 12 figs., 1 tab., 6 refs

  8. Caribbean tectonics and relative plate motions

    Science.gov (United States)

    Burke, K.; Dewey, J. F.; Cooper, C.; Mann, P.; Pindell, J. L.

    1984-01-01

    During the last century, three different ways of interpreting the tectonic evolution of the Gulf of Mexico and the Caribbean have been proposed, taking into account the Bailey Willis School of a permanent pre-Jurassic deep sea basin, the Edward Suess School of a subsided continental terrain, and the Alfred Wegener School of continental separation. The present investigation is concerned with an outline of an interpretation which follows that of Pindell and Dewey (1982). An attempt is made to point out ways in which the advanced hypotheses can be tested. The fit of Africa, North America, and South America is considered along with aspects of relative motion between North and South America since the early Jurasic. Attention is given to a framework for reconstructing Caribbean plate evolution, the evolution of the Caribbean, the plate boundary zones of the northern and southern Caribbean, and the active deformation of the Caribbean plate.

  9. “I Carve You, Keeper of My Soul and My Writings, on My Seal...”

    Directory of Open Access Journals (Sweden)

    Nikolay Aleksandrovich Alekseenko

    2015-10-01

    Full Text Available The lead seals perfectly illustrate the indissoluble connection of Byzantine society with religion, its attributes and Christian symbols. There is not much data saved in annals of Byzantine history, including church sources, on the general background of hagiographic information about church figures, in particular about the clergymen of provincial dioceses, were. Their lists are not completed and the names of some of them had become famous only due to the findings of the Byzantine lead seals – molybdoboulles. Introduction of several new sealsseal of monk Kallinikos from Cherson (second half of the eleventh century, bullae of high priests from diocese of the Asian Minor region – John, bishop of Chaldia (first half of the eighth century, Basil, bishop of Magnesia ad Meandrum (eleventh century, and metropolitans of Sardeis Stilianos (second half of the eleventh century and Peter (eleventh century, John Koloneiates, proedros from Colonia (second half of the eleventh century and Michael, metropolitan of Traianoupolis (second half of the eleventh century allows us not only extend our information about individual dioceses of Byzantine empire, but in some cases to get unknown data on other sources.

  10. Seal For Precooling A Turbopump

    Science.gov (United States)

    Owen, Samuel S.; Mulready, R.C.

    1988-01-01

    Diaphragm reduces misalignment. Rotary seal retains precooling fluid in pump section of cryogenic turbopump, preventing fluid from entering turbine section. Precooling fluid held in pump section of turbopump by knife-edge labyrinth seal on diaphragm.

  11. Piston rod seal

    Energy Technology Data Exchange (ETDEWEB)

    Lindskoug, S.

    1984-06-05

    In a piston rod seal of the type comprising a gland through which the piston rod is passed the piston is provided with a sleeve surrounding the piston rod and extending axially so as to axially partly overlap the gland when the piston is in its bottom dead center position. 4 figs.

  12. Piston rod seal

    Energy Technology Data Exchange (ETDEWEB)

    Lindskoug, Stefan (Malmo, SE)

    1984-01-01

    In a piston rod seal of the type comprising a gland through which the piston rod is passed the piston is provided with a sleeve surrounding the piston rod and extending axially so as to axially partly overlap the gland when the piston is in its bottom dead center position.

  13. Cover gas seals: FFTF-LMFBR seal test program

    Energy Technology Data Exchange (ETDEWEB)

    Kurzeka, W.; Oliva, R.; Welch, T.S.; Shimazaki, T.

    1974-01-01

    The objectives of this program are to: (1) conduct static and dynamic tests to demonstrate or determine the mechanical performance of full-size (cross section) FFTF fuel transfer machine and reactor vessel head seals intended for use in a sodium vapor-inert gas environment, (2) demonstrate that these FFTF seals or new seal configurations provide acceptable fission product and cover gas retention capabilities at Clinch River Breeder Reactor Plant (CRBRP) operating environmental conditions other than radiation, and (3) develop improved seals and seal technology for the CRBRP to support the national objective to reduce all atmospheric contaminations to low levels.

  14. Artists in and out of the Caribbean

    Directory of Open Access Journals (Sweden)

    Sally Price

    1999-07-01

    Full Text Available [First paragraph] Caribbean Art. VEERLE POUPEYE. London: Thames and Hudson, 1998. 224 pp. (Paper US$ 14.95 Transforming the Crown: African, Asian and Caribbean Artists in Britain, 1966-1996. MORA J. BEAUCHAMP-BYRD & M. FRANKLIN SIRMANS (eds.. New York: Caribbean Cultural Center, 1998. 177 pp. (Paper US$ 39.95, £31.95 "Caribbean" (like "Black British" culture is (as a Dutch colleague once said of postmodernism a bit of a slippery fish. One of the books under review here presents the eclectic artistic productions of professional artists with Caribbean identities of varying sorts - some of them lifelong residents of the region (defined broadly to stretch from Belize and the Bahamas to Curacao and Cayenne, some born in the Caribbean but living elsewhere, and others from far-away parts of the world who have lingered or settled in the Caribbean. The other focuses on artists who trace their cultural heritage variously to Lebanon, France, Malaysia, Spain, China, England, Guyana, India, the Caribbean, the Netherlands, the Philippines, and the whole range of societies in West, East, and Central Africa, all of whom meet under a single ethnic label in galleries in New York and London. Clearly, the principles that vertebrate Caribbean Art and Transforming the Crown are built on the backs of ambiguities, misperceptions, ironies, and ethnocentric logics (not to mention their stronger variants, such as racism. Yet far from invalidating the enterprise, they offer an enlightening inroad to the social, cultural, economic, and political workings of artworlds that reflect globally orchestrated pasts of enormous complexity.

  15. Regenerator cross arm seal assembly

    Science.gov (United States)

    Jackman, Anthony V.

    1988-01-01

    A seal assembly for disposition between a cross arm on a gas turbine engine block and a regenerator disc, the seal assembly including a platform coextensive with the cross arm, a seal and wear layer sealingly and slidingly engaging the regenerator disc, a porous and compliant support layer between the platform and the seal and wear layer porous enough to permit flow of cooling air therethrough and compliant to accommodate relative thermal growth and distortion, a dike between the seal and wear layer and the platform for preventing cross flow through the support layer between engine exhaust and pressurized air passages, and air diversion passages for directing unregenerated pressurized air through the support layer to cool the seal and wear layer and then back into the flow of regenerated pressurized air.

  16. Seals Having Textured Portions for Protection in Space Environments

    Science.gov (United States)

    Daniels, Christopher (Inventor); Garafolo, Nicholas (Inventor)

    2016-01-01

    A sealing construct for a space environment includes a seal-bearing object, a seal on the seal-bearing object, and a seal-engaging object. The seal includes a seal body having a sealing surface, and a textured pattern at the sealing surface, the textured pattern defining at least one shaded channel surface. The seal-engaging object is selectively engaged with the seal-bearing object through the seal. The seal-engaging object has a sealing surface, wherein, when the seal-engaging object is selectively engaged with the seal-bearing object, the sealing surface of the seal-engaging object engages the sealing surface of the seal, and the seal is compressed between the seal-bearing object and the seal-engaging object such that at least one shaded channel surface engages the sealing surface of the seal-engaging object.

  17. Summary of Caribbean managers meeting.

    Science.gov (United States)

    1994-12-01

    The Caribbean Expanded Program on Immunization (EPI) Managers held their 11th meeting in November 1994. The meeting attracted over 80 attendees from all of the member countries, including Puerto Rico (for the first time), representatives of nongovernmental organizations, and technical personnel. Among the achievements cited were the facts that no cases of indigenous measles have been reported in over 3 years in the Caribbean, no cases of paralytic poliomyelitis have been detected in nearly 12 years, progress has been made in the surveillance of fever and rash illnesses, and immunization coverage levels remain high. The main objectives of the meeting were to review the overall EPI program in the Caribbean in order to identify obstacles to achieving program targets and to evaluate continued efforts towards the elimination of measles by 1995. The discussions about measles focused on 1) the surveillance system for the detection of suspected cases, which has improved, but which could be strengthened and 2) the levels of immunization coverage and the continued increase in the number of children who remain susceptible to the disease (each country projected the number of children under age 5 years who would be susceptible by June 1995). Steps to maintain the polio-free status of the area, including maintaining immunization levels of at least 80%, were also reviewed. In addition, concerns about reducing the number of cases of congenital rubella syndrome were addressed with several recommendations including improving active hospital surveillance and developing an appropriate rubella vaccination strategy. Incidence rates for tuberculosis were reported, and the problems of coinfection with HIV and the emergence of drug resistant strains of the disease were discussed. Tuberculosis control programs in the region are generally inadequate, treatment standards have not been implemented, the availability of drugs is limited, and treatment monitoring is not routine. In order to meet

  18. Damping seal verification setup

    Science.gov (United States)

    Cappel, K. L.

    1985-01-01

    The heart of the Space Shuttle Main Engine (SSME) is a set of turbopumps that propel cryogenic fluids at very high pressures and flow rates, at rotor speeds up to 37,000 rpm. Bushing seals that cause the flow in the fluid film to become turbulent, by means of a multiplicity of pockets, were shown theoretically not only to inhibit subsynchronous whirl, but to reduce leakage as well. However, experimental data that relate these two desirable characteristics to such parameters as pocket depth, Reynolds number (based on clearance and axial flow rate), and rotating speed are limited. To obtain the required data, NASA's Marshall Space Flight Center (MSFC) commissioned Wyle Laboratories to design, build and operate a test rig in which the damping efficacy and leakage reduction of typical candidate seals are to be evaluated.

  19. Gas turbine sealing apparatus

    Science.gov (United States)

    Wiebe, David J; Wessell, Brian J; Ebert, Todd; Beeck, Alexander; Liang, George; Marussich, Walter H

    2013-02-19

    A gas turbine includes forward and aft rows of rotatable blades, a row of stationary vanes between the forward and aft rows of rotatable blades, an annular intermediate disc, and a seal housing apparatus. The forward and aft rows of rotatable blades are coupled to respective first and second portions of a disc/rotor assembly. The annular intermediate disc is coupled to the disc/rotor assembly so as to be rotatable with the disc/rotor assembly during operation of the gas turbine. The annular intermediate disc includes a forward side coupled to the first portion of the disc/rotor assembly and an aft side coupled to the second portion of the disc/rotor assembly. The seal housing apparatus is coupled to the annular intermediate disc so as to be rotatable with the annular intermediate disc and the disc/rotor assembly during operation of the gas turbine.

  20. Sealing the Mitochondrial Respirasome

    OpenAIRE

    Winge, Dennis R.

    2012-01-01

    The mitochondrial respiratory chain is organized within an array of supercomplexes that function to minimize the generation of reactive oxygen species (ROS) during electron transfer reactions. Structural models of supercomplexes are now known. Another recent advance is the discovery of non-OXPHOS complex proteins that appear to adhere to and seal the individual respiratory complexes to form stable assemblages that prevent electron leakage. This review highlights recent advances in our underst...

  1. A sealing element

    Energy Technology Data Exchange (ETDEWEB)

    Obi, F.; Takada, K.

    1983-09-22

    A sealing lining made of a mixture of polyethylene or polypropylene with an additive which prevents destruction of the lining is used in the element. The content of the additive in the mixture is 10 to 30 percent by mass. The additive basically consists of polyethylene. Carboxyl groups are introduced into the polymer as an anion and sodium, potassium and molybdenum are introduced as the cation.

  2. Origin of the Caribbean Plate Conference

    Institute of Scientific and Technical Information of China (English)

    Keith H. James; Maria Antonieta Lorente

    2006-01-01

    @@ An international research conference, entitled "Geology of the area between North and South America, with focus on the origin of the Caribbean Plate", took place in Siguenza, Spain, from May 29-June 2, 2006.

  3. Caribbean Marine Mammal Assessment Vessel Surveys

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — These data sets are a compilation of large vessel surveys for marine mammal stock assessments in Caribbean waters conducted during 2000-2001. These surveys were...

  4. 九华僧尼『仙人饭』——黄精%Buddhist Monks and Nuns in Jiuhua Mountain Take Solomon's Seal for the Staple Food

    Institute of Scientific and Technical Information of China (English)

    邢湘臣

    2011-01-01

    @@ 九华山是风景秀丽的名山,驰名中外的佛教圣地.山上有很多寺庙,山下有诸多田地、泉池、村落人家,僧寺尼庵、鳞次栉比.唐代大诗人李白晚年浪迹江南,寄情山水,见九华山产生流连忘返之心,并留下了"天河挂绿水,秀出九芙蓉"的名句.九华山盛产"三珍"--冰姜、毛峰茶和黄精,以当地山林中的新鲜黄精为主料制成的"黄精蜜饯",至今已近六百年的历史了.

  5. Water Security and Services in The Caribbean

    OpenAIRE

    Adrian Cashman

    2013-01-01

    The efficient management of water resources and services continues to be a concern in many of the small island states of the Caribbean. There are growing concerns over the ability of governments in the region to ensure the good management and provision of water without jeopardizing economic growth and the maintenance of social well-being. This paper provides an overview of the major factors influencing the water security facing the Caribbean Region and how the emerging concerns are being addr...

  6. Closure and Sealing Design Calculation

    International Nuclear Information System (INIS)

    The purpose of the ''Closure and Sealing Design Calculation'' is to illustrate closure and sealing methods for sealing shafts, ramps, and identify boreholes that require sealing in order to limit the potential of water infiltration. In addition, this calculation will provide a description of the magma that can reduce the consequences of an igneous event intersecting the repository. This calculation will also include a listing of the project requirements related to closure and sealing. The scope of this calculation is to: summarize applicable project requirements and codes relating to backfilling nonemplacement openings, removal of uncommitted materials from the subsurface, installation of drip shields, and erecting monuments; compile an inventory of boreholes that are found in the area of the subsurface repository; describe the magma bulkhead feature and location; and include figures for the proposed shaft and ramp seals. The objective of this calculation is to: categorize the boreholes for sealing by depth and proximity to the subsurface repository; develop drawing figures which show the location and geometry for the magma bulkhead; include the shaft seal figures and a proposed construction sequence; and include the ramp seal figure and a proposed construction sequence. The intent of this closure and sealing calculation is to support the License Application by providing a description of the closure and sealing methods for the Safety Analysis Report. The closure and sealing calculation will also provide input for Post Closure Activities by describing the location of the magma bulkhead. This calculation is limited to describing the final configuration of the sealing and backfill systems for the underground area. The methods and procedures used to place the backfill and remove uncommitted materials (such as concrete) from the repository and detailed design of the magma bulkhead will be the subject of separate analyses or calculations. Post-closure monitoring will not

  7. Closure and Sealing Design Calculation

    Energy Technology Data Exchange (ETDEWEB)

    T. Lahnalampi; J. Case

    2005-08-26

    The purpose of the ''Closure and Sealing Design Calculation'' is to illustrate closure and sealing methods for sealing shafts, ramps, and identify boreholes that require sealing in order to limit the potential of water infiltration. In addition, this calculation will provide a description of the magma that can reduce the consequences of an igneous event intersecting the repository. This calculation will also include a listing of the project requirements related to closure and sealing. The scope of this calculation is to: summarize applicable project requirements and codes relating to backfilling nonemplacement openings, removal of uncommitted materials from the subsurface, installation of drip shields, and erecting monuments; compile an inventory of boreholes that are found in the area of the subsurface repository; describe the magma bulkhead feature and location; and include figures for the proposed shaft and ramp seals. The objective of this calculation is to: categorize the boreholes for sealing by depth and proximity to the subsurface repository; develop drawing figures which show the location and geometry for the magma bulkhead; include the shaft seal figures and a proposed construction sequence; and include the ramp seal figure and a proposed construction sequence. The intent of this closure and sealing calculation is to support the License Application by providing a description of the closure and sealing methods for the Safety Analysis Report. The closure and sealing calculation will also provide input for Post Closure Activities by describing the location of the magma bulkhead. This calculation is limited to describing the final configuration of the sealing and backfill systems for the underground area. The methods and procedures used to place the backfill and remove uncommitted materials (such as concrete) from the repository and detailed design of the magma bulkhead will be the subject of separate analyses or calculations. Post

  8. Pressure sensor for sealed containers

    Science.gov (United States)

    Hodges, Franklin R.

    2001-01-01

    A magnetic pressure sensor for sensing a pressure change inside a sealed container. The sensor includes a sealed deformable vessel having a first end attachable to an interior surface of the sealed container, and a second end. A magnet mounted to the vessel second end defining a distance away from the container surface provides an externally detectable magnetic field. A pressure change inside the sealed container causes deformation of the vessel changing the distance of the magnet away from the container surface, and thus the detectable intensity of the magnetic field.

  9. Sealing of rock fractures

    International Nuclear Information System (INIS)

    The major water-bearing fractures in granite usually from fairly regular sets but the extension and degree of connectivity is varying. This means that only a few fractures that are interconnected with the deposition holes and larger water-bearing structures in a HLW repository are expected and if they can be identified and cut off through sealing it would be possible to improve the isolation of waste packages very effectively. Nature's own fracture sealing mechanisms may be simulated and a survey of the involved processes actually suggests a number of possible filling methods and substances. Most of them require high temperature and pressure and correspondingly sophisticated techniques, but some are of potential interest for immediate application with rather moderate effort. Such a technique is to fill the fractures with clayey substances which stay flexible and low-permeable provided that they remain physically and chemically intact. It is demonstrated in the report that effective grouting requires a very low viscosity and shear strength of the substance and this can be achieved by mechanical agitation as demonstrated in this report. Thus, by superimposing static pressure and shear waves induced by percussion hammering at a suitable frequency, clays and fine-grained silts as well as cement can be driven into fractures with an average aperture as small as 0.1 mm. Experiments were made in the laboratory using concrete and steel plates, and a field pilot test was also conducted under realistic conditions on site in Stripa. They all demonstrated the practicality of the 'dynamic injection technique' and that the fluid condition of the grouts yielded complete filling of the injected space to a considerable distance from the injection point. The field test indicated a good sealing ability as well as a surprisingly high resistance to erosion and piping. (author)

  10. 30 CFR 57.8535 - Seals.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Seals. 57.8535 Section 57.8535 Mineral....8535 Seals. Seals shall be provided with a means for checking the quality of air behind the seal and a means to prevent a water head from developing unless the seal is designed to impound water....

  11. 19 CFR 113.25 - Seals.

    Science.gov (United States)

    2010-04-01

    ... 19 Customs Duties 1 2010-04-01 2010-04-01 false Seals. 113.25 Section 113.25 Customs Duties U.S... Bond Requirements § 113.25 Seals. When a seal is required, the seal shall be affixed adjoining the signatures of principal and surety, if individuals, and the corporate seal shall be affixed close to...

  12. Sealing the mitochondrial respirasome.

    Science.gov (United States)

    Winge, Dennis R

    2012-07-01

    The mitochondrial respiratory chain is organized within an array of supercomplexes that function to minimize the generation of reactive oxygen species (ROS) during electron transfer reactions. Structural models of supercomplexes are now known. Another recent advance is the discovery of non-OXPHOS complex proteins that appear to adhere to and seal the individual respiratory complexes to form stable assemblages that prevent electron leakage. This review highlights recent advances in our understanding of the structures of supercomplexes and the factors that mediate their stability.

  13. East Indians in the Caribbean

    Directory of Open Access Journals (Sweden)

    Ellen M. Schnepel

    1999-07-01

    Full Text Available [First paragraph] Transients to Settlers: The Experience of Indians in Jamaica 1845-J950. VERENE SHEPHERD. Leeds, U.K.: Peepal Tree Books, 1993. 281 pp. (Paper £12.95 Survivors of Another Crossing: A History of East Indians in Trinidad, 1880-1946. MARIANNE D. SOARES RAMESAR. St. Augustine, Trinidad and Tobago: U.W.I. School of Continuing Education, 1994. xiii + 190 pp. (Paper n.p. Les Indes Antillaises: Presence et situation des communautes indiennes en milieu caribeen. ROGER TOUMSON (ed.. Paris: L'Harmattan, 1994. 264 pp. (Paper 140.00 FF Nation and Migration: The Politics of Space in the South Asian Diaspora. PETER VAN DER VEER (ed.. Philadelphia: University of Pennsylvania Press, 1995. vi + 256 pp. (Cloth US$ 39.95, Paper US$ 17.95 In the decade since 1988, Caribbean nations with Indian communities have commemorated the 150th anniversary of the arrival of East Indians to the West Indies. These celebrations are part of local revitalization movements of Indian culture and identity stretching from the French departement of Guadeloupe in the Windward Islands to Trinidad and Guyana in the south. Political changes have mirrored the cultural revival in the region. While the debate so often in the past centered on the legitimacy of East Indian claims to local nationality in these societies where African or Creole cultures dominate, in the 1990s leaders of Indian descent were elected heads of government in the two Caribbean nations with the most populous East Indian communities: Cheddi Jagan as President of Guyana in October 1992 (after a 28-year hiatus and Basdeo Panday as Prime Minister of Trinidad in November 1995. Both men have long been associated with their respective countries' struggles for economic, political, and social equality. Outside the region during the summer of 1997, fiftieth-anniversary celebrations marking the independence of India and Pakistan from Britain confirmed that Indo chic — or "Indofrenzy" as anthropologist

  14. SEAMAP Caribbean Reef Fish Survey (PC1202, ME70)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Objectives of the 2012 SEAMAP Caribbean Reef Fish Survey were to assess relative abundance of reef fish species around the US Caribbean Islands, estimate...

  15. SEAMAP Caribbean Reef Fish Survey (PC1202, EK60)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Objectives of the 2012 SEAMAP Caribbean Reef Fish Survey were to assess relative abundance of reef fish species around the US Caribbean Islands, estimate...

  16. Tsunami Warning Services for the Caribbean Region

    Science.gov (United States)

    Whitmore, P. M.; Ferris, J. C.; Weinstein, S. A.

    2007-05-01

    Tsunami warning and watch services are currently provided to the Caribbean region through a collaborative effort between the two NOAA Tsunami Warning Centers (TWCs): the Pacific Tsunami Warning Center (PTWC) in Ewa Beach, Hawaii, and the West Coast/Alaska Tsunami Warning Center (WCATWC) in Palmer, Alaska. The WCATWC, in coordination with the Puerto Rico Seismic Network (PRSN), provides fast-response warning services to the U.S. territories of the Commonwealth of Puerto Rico and the U.S. Virgin Islands (PR/VI). The PTWC provides regional watch services to other countries throughout and surrounding the Caribbean Sea as part of the Intergovernmental Coordination Group for the Caribbean Sea and Adjacent Regions. This collaboration is analogous to the TWC's responsibilities in the Pacific basin: the WCATWC provides fast-response warning services for the U.S. west coast states, Alaska, and British Columbia in Canada, while the PTWC provides regional services for countries throughout and surrounding the Pacific Ocean (as well as a fast-response service for the U.S. State of Hawaii). Caribbean seismic data are transmitted to the TWCs through several means. The PRSN directly exports data to the WCATWC, providing the Center sufficient seismic data for the PR/VI region. Additionally, the PRSN provides the TWCs with data gathered from other Caribbean nations. Using modern communication capabilities, the seismic data can be processed at the TWCs at the same time it is processed locally. Another source of high- quality seismic data is the new USGS nine-station array that circles the region. The Global Seismic Network maintains several stations in Caribbean, Central American, and South American nations which are available in real-time to the TWCs. Unfortunately, sea level data coverage is sporadic in the region. The PR/VI has a relatively dense array of coastal tide gages, but coastal tide gage coverage is very sparse for the rest of the Caribbean basin. Three deep-ocean pressure

  17. Seals. Grades 3-6.

    Science.gov (United States)

    New England Aquarium, Boston, MA.

    Explanations of a marine mammal rescue program and information on seals and sea lions are presented in this curriculum package for intermediate grade teachers. Activities are highlighted which focus on the natural history of harbor seals. This unit contains: (1) pre-trip activities (including fact sheets and worksheets on the different types of…

  18. Glassy composition for hermetic seals

    Science.gov (United States)

    Wilder, Jr., James A.

    1980-01-01

    The invention relates to a glassy composition adaptable for sealing to aluminum-based alloys to form a hermetically-sealed insulator body. The composition may either be employed as a glass or, after devitrifying heat treatment, as a glass-ceramic.

  19. Rotating plug bearing and seal

    International Nuclear Information System (INIS)

    Disclosed is a bearing and seal structure for nuclear reactors utilizing rotating plugs above the nuclear reactor vessel. The structure permits lubrication of bearings and seals of the rotating plugs without risk of the lubricant draining into the reactor vessel below. The structure permits lubrication by utilizing a rotating outer race bearing. 19 claims, 3 figures

  20. Rotating plug bearing and seal

    Science.gov (United States)

    Wade, Elman E.

    1977-01-01

    A bearing and seal structure for nuclear reactors utilizing rotating plugs above the nuclear reactor vessel. The structure permits lubrication of bearings and seals of the rotating plugs without risk of the lubricant draining into the reactor vessel below. The structure permits lubrication by utilizing a rotating outer race bearing.

  1. Gulf and Dilmun Type seals

    DEFF Research Database (Denmark)

    Laursen, Steffen

    2011-01-01

    these Gulf Type‘ seals drew heavily on Indus Valley iconography and Indus script was occasionally employed in a pidgin-like manner. While the earliest circular seals incorporate features from Mesopotamian glyptic only to a lesser extent, this becomes a more important source of inspiration for later Dilmun...

  2. Bibliography on open access in Latin America and the Caribbean

    OpenAIRE

    Babini, Dominique

    2012-01-01

    Bibliography on open access in Latin America and the Caribbean. Selection mainly based on open access publications describing open access initiatives in Latin America and the Caribbean. Prepared for UNESCO-Latin America and the Caribbean Section of the UNESCO-GOAP Global Open Access Portal.

  3. Aerodynamic seals for rotary machine

    Energy Technology Data Exchange (ETDEWEB)

    Bidkar, Rahul Anil; Cirri, Massimiliano; Thatte, Azam Mihir; Williams, John Robert

    2016-02-09

    An aerodynamic seal assembly for a rotary machine includes multiple sealing device segments disposed circumferentially intermediate to a stationary housing and a rotor. Each of the segments includes a shoe plate with a forward-shoe section and an aft-shoe section having multiple labyrinth teeth therebetween facing the rotor. The sealing device segment also includes multiple flexures connected to the shoe plate and to a top interface element, wherein the multiple flexures are configured to allow the high pressure fluid to occupy a forward cavity and the low pressure fluid to occupy an aft cavity. Further, the sealing device segments include a secondary seal attached to the top interface element at one first end and positioned about the flexures and the shoe plate at one second end.

  4. Turbine and Structural Seals Team Facilities

    Data.gov (United States)

    Federal Laboratory Consortium — Seals Team Facilities conceive, develop, and test advanced turbine seal concepts to increase efficiency and durability of turbine engines. Current projects include...

  5. Towards indigenous feminist theorizing in the Caribbean.

    Science.gov (United States)

    Mohammed, P

    1998-01-01

    This theoretical study of feminism in the Caribbean opens by presenting the contemporary image of the Caribbean and then pointing to the continuing influence of the colonial past in the creation of contemporary community and the establishment of identity. The paper continues with a focus on three aspects of identity, or difference, that have influenced the daily articulation of feminism and academic debates. The first concerns the positions taken by women in the region's political struggles. The second is an exploration of the linguistic meanings of the gender discourse within the region. Finally, the essay examines the idea of linguistic difference in light of contemporary Western feminist views of "sexual difference" versus equality. The discussion of each of these issues is grounded in historical analysis and illustrated with specific examples. The study concludes that, in this region, feminism offers a new way to investigate the past while creating challenges and opportunities in the struggle to establish a Caribbean identity. PMID:12294238

  6. Tamper tape seals

    International Nuclear Information System (INIS)

    Tamper tapes are appealing for many applications due to their ease of use and relative robustness. Applications include seals for temporary area denial, protection of sensitive equipment, chain-of-custody audit trails, and inventory control practices. A next generation of adhesive tamper tapes is being developed that combines the best features of commercially available devices with additional state-of-the-art features in tamper indication, tamper-resistance, and counterfeit-resistance. The additional features are based on U.S. Department of Energy (DOE) research and development (R ampersand D) activities that were originally associated with preparations for the Strategic Arms Reduction Treaty (START). New features include rapid-set, chemical-cure adhesive systems that allow user-friendly application and layered levels of counterfeit-resistance based on unique open-quotes fingerprintclose quotes characteristics that can be accessed as desired

  7. Caribbean literary theory: modernist and postmodern

    Directory of Open Access Journals (Sweden)

    A. James Arnold

    1995-01-01

    Full Text Available [First paragraph] The Repeating Mand: The Caribbean and the Postmodern Perspective. ANTONIO BENITEZ-ROJO. Durham NC: Duke University Press, 1992. xi + 303 pp. (Cloth US$ 49.95, Paper US$ 15.95 Myth and History in Caribbean Fiction: Alejo Carpentier, Wilson Harris, and Edouard Glissant. BARBARA J. WEBB. Amherst: University of Massachusetts Press, 1992. x + 185 pp. (Cloth US$ 25.00 Caribbean literature has been overtaken of late by the quarrels that have pitted postmodernists against modernists in Europe and North America for the past twenty years. The modernists, faced with the fragmentation of the region that hard-nosed pragmatists and empiricists could only see as hostile to the emergence of any common culture, had sought in myth and its literary derivatives the collective impulse to transcend the divisions wrought by colonial history. Fifteen years ago I wrote a book that combined in its lead title the terms Modernism and Negritude in an effort to account for the efforts by mid-century Caribbean writers to come to grips with this problem. A decade later I demonstrated that one of the principal Caribbean modernists, Aimé Césaire, late in his career adopted stylistic characteristics that we associate with the postmodern (Arnold 1990. The example of Césaire should not be taken to suggest that we are dealing with some sort of natural evolution of modernism toward the postmodern. In fact the two terms represent competing paradigms that organize concepts and data so differently as to offer quite divergent maps of the literary Caribbean.

  8. Do crabeater seals forage cooperatively?

    Science.gov (United States)

    Gales, Nicholas J.; Fraser, William R.; Costa, Daniel P.; Southwell, Colin

    2004-08-01

    Crabeater seals are abundant pack-ice predators that feed almost exclusively on krill. They have a circumpolar distribution and are generally sighted hauled out on ice floes alone or in pairs. Here we report our observations of a sighting of 150-200 crabeater seals, which were synchronised in their diving and surfacing behaviour, along with a summary of similar observations from western Antarctica of large groups of crabeater seals in synchronous dive cycles. We report on the low frequency of sightings of such groups during Antarctic pack-ice seal surveys in eastern (Greater) Antarctica. We examine plausible hypotheses to explain these observations, and suggest this behaviour is likely to represent some form of cooperative foraging behaviour, whereby a net advantage in individual energy intake rates is conferred to each seal. Current research on crabeater seal foraging using satellite-linked dive recorders is unlikely to provide sufficiently fine-scale data to examine this hypothesis. Nor will this approach indicate if a seal is foraging with conspecifics. The use of remote or animal-borne camera systems is more likely to provide an insight into fine-scale foraging tactics, as well as the possible, occasional use of cooperative foraging strategies.

  9. Friction Characteristics of Mechanical Seals with Laser-textured Seal Faces

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Heat generated by friction between faces of mechanica l seals is a major factor that causes deterioration of the seals and shortens th eir service life. Excessive temperature rise can greatly alter the seal geometry and vaporize the sealing fluid, resulting in friction of boundary lubrication. These effects on face seals usually lead to excessive leakage and ultimately ren der the seal inoperable. In order to maintain the reliability of seals, high fri ction and unwanted wear must be avoided. Using the l...

  10. MONK 6.3 code new version for microcomputers and its impact on the safety-criticality analysis

    International Nuclear Information System (INIS)

    The Monte Carlo method is utilized in neutronics in different fields, such as critical experiment analysis, shielding and criticality-safety analysis. This broad use of is due mainly to its great ability in geometrical representation. In this work it is presented in detail the modifications made on version 6.3 of english code MONK, in order to install it in a system based in microcomputers. The description of some enhancements made to the code are also described. The modifications basically comprised to rewrite code with non-standard use of FORTRAN, and to modify the multidimensional arrays arithmetic in order to save another non-standard use of language. The random number generator was also tested, and it was recognized that it presented a layer structure like all congruent-linear generators. For this reason, it was changed by another with better randomness characteristics. The economic motivations that promote down sizing work, the difficulties found in reorganizing group work, and the impact on the quality of safety analysis of facilities with fissile material are also discussed. (author)

  11. Leak detection of KNI seals

    International Nuclear Information System (INIS)

    In Unit 3 and 4 of the Paks Nuclear Power Plant, Hungary, KNI type seals are used as lead-throughs with conical nickel sealing rings. Their failure can be critical for the operation of the reactor. An Acoustical Leak Detection System (ALDS) was constructed and tested for the operational testing of the seals. Some individual papers are presented in this collection on the calibration and testing of the ALDS intended to be placed on the top of the reactor vessels. The papers include simulation measurements of Unit 3 of NPP, laboratory experiments, evaluation of measurements, and further development needs with the ALDS. (R.P.) 50 figs.; 19 tabs

  12. Destabilizing force of labyrinth seal

    Science.gov (United States)

    Kanki, Hiroshi; Morit, Shigeki

    1987-01-01

    A great deal of research has recently been conducted to solve the subsynchronous rotor vibration problems in high-performance turbomachinery. Particularly, the destabilizing effect of the labyrinth seal on compressors or turbines has been investigated for many years. In spite of many efforts the dynamic effect of the labyrinth seal had not been fully determined from qualitative and quantitative points of view. But from theoretical and experimental work, the dynamic characteristics of the labyrinth seal have been established. The results of recent theoretical and experimental works are presented.

  13. 9 CFR 381.98 - Official seal.

    Science.gov (United States)

    2010-01-01

    ... 9 Animals and Animal Products 2 2010-01-01 2010-01-01 false Official seal. 381.98 Section 381.98... Certificates; Certification Procedures § 381.98 Official seal. The official mark for use in sealing means of... and a serial number as shown below, and any seals approved by the Administrator for applying such...

  14. 46 CFR 501.11 - Official seal.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 9 2010-10-01 2010-10-01 false Official seal. 501.11 Section 501.11 Shipping FEDERAL... Seal § 501.11 Official seal. (a) Description. Pursuant to section 201(c) of the Merchant Marine Act, 1936, as amended (46 U.S.C. 301(d)), the Commission prescribes its official seal, as adopted by...

  15. 19 CFR 101.7 - Customs seal.

    Science.gov (United States)

    2010-04-01

    ... 19 Customs Duties 1 2010-04-01 2010-04-01 false Customs seal. 101.7 Section 101.7 Customs Duties U... GENERAL PROVISIONS § 101.7 Customs seal. (a) Design. According to the design furnished by the Department of the Treasury, the Customs seal of the United States shall consist of the seal of the Department...

  16. 14 CFR 65.133 - Seal.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Seal. 65.133 Section 65.133 Aeronautics and...: AIRMEN OTHER THAN FLIGHT CREWMEMBERS Parachute Riggers § 65.133 Seal. Each certificated parachute rigger must have a seal with an identifying mark prescribed by the Administrator, and a seal press....

  17. 36 CFR 901.6 - Seal.

    Science.gov (United States)

    2010-07-01

    ... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false Seal. 901.6 Section 901.6... CORPORATION § 901.6 Seal. The Corporation may adopt a corporate seal which shall have the name of the Corporation and year of incorporation printed upon it. The seal may be used by causing it or a...

  18. 39 CFR 3002.3 - Official seal.

    Science.gov (United States)

    2010-07-01

    ... 39 Postal Service 1 2010-07-01 2010-07-01 false Official seal. 3002.3 Section 3002.3 Postal Service POSTAL REGULATORY COMMISSION PERSONNEL ORGANIZATION § 3002.3 Official seal. (a) Authority. The Seal described in this section is hereby established as the official seal of the Postal Rate...

  19. 7 CFR 29.34 - Sample seal.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 2 2010-01-01 2010-01-01 false Sample seal. 29.34 Section 29.34 Agriculture Regulations of the Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections, Marketing... INSPECTION Regulations Definitions § 29.34 Sample seal. A seal approved by the Director for sealing...

  20. 7 CFR 29.35 - Lot seal.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 2 2010-01-01 2010-01-01 false Lot seal. 29.35 Section 29.35 Agriculture Regulations of the Department of Agriculture AGRICULTURAL MARKETING SERVICE (Standards, Inspections, Marketing... INSPECTION Regulations Definitions § 29.35 Lot seal. A seal approved by the Director for sealing lots...

  1. 30 CFR 75.339 - Seals records.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Seals records. 75.339 Section 75.339 Mineral... SAFETY STANDARDS-UNDERGROUND COAL MINES Ventilation § 75.339 Seals records. (a) The table entitled “Seal.... Table—§ 75.339(a) Seal Recordkeeping Requirements Record Section reference Retention time (1)...

  2. Design considerations for mechanical face seals

    Science.gov (United States)

    Ludwig, L. P.; Greiner, H. F.

    1980-01-01

    Two companion reports deal with design considerations for improving performance of mechanical face seals, one of family of devices used in general area of fluid sealing of rotating shafts. One report deals with basic seal configuration and other with lubrication of seal.

  3. Coping Strategies of Caribbean "Problem Students"

    Science.gov (United States)

    Maynard, Donna-Maria B.; Welch, Patricia L.

    2009-01-01

    The coping strategies of middle adolescents (14-16 years) generate interest amongst educators, parents, school psychologists and school counsellors. This study, using a phenomenological approach, examined the coping strategies of "problem" adolescents in the Caribbean in regard to their interactions with peers and teachers. Data were collected…

  4. Further studies on Caribbean tenebrionid beetles

    NARCIS (Netherlands)

    Marcuzzi, G.

    1977-01-01

    The study of some newly collected material from the West Indies may justify a fourth paper on Caribbean Tenebrionidae in these “Studies”. Thanks to dr. P. WAGENAAR HUMMELINCK’S collecting work, the Tenebrionid fauna of the Antilles and the adjacent South American mainland shores may be considered to

  5. Quantum String Seal Is Insecure

    CERN Document Server

    Chau, H F

    2006-01-01

    A quantum string seal encodes the value of a (bit) string as a quantum state in such a way that everyone can extract a non-negligible amount of information on the string by a suitable measurement. Moreover, such measurement must disturb the quantum state and is likely to be detected by an authorized verifier. In this way, the intactness of the encoded quantum state plays the role of a wax seal in the digital world. Here I analyze the security of quantum string seal by studying the information disturbance tradeoff of a measurement. This information disturbance tradeoff analysis extends the earlier results of Bechmann-Pasquinucci et al. and Chau by concluding that all quantum string seals are insecure. Specifically, I find a way to obtain non-trivial information on the string that escapes the verifier's detection with probability at least one half.

  6. Seal device for ferromagnetic containers

    Science.gov (United States)

    Meyer, Ross E.; Jason, Andrew J.

    1994-01-01

    A temporary seal or patch assembly prevents the escape of contents, e.g., fluids and the like, from within a container having a breach therethrough until the contents can be removed and/or a repair effected. A frame that supports a sealing bladder can be positioned over the breach and the frame is then attached to the container surface, which must be of a ferromagnet material, by using switchable permanent magnets. The permanent magnets are designed to have a first condition that is not attracted to the ferromagnetic surface and a second conditions whereby the magnets are attracted to the surface with sufficient force to support the seal assembly on the surface. Latching devices may be attached to the frame and engage the container surface with hardened pins to prevent the lateral movement of the seal assembly along the container surface from external forces such as fluid drag or gravity.

  7. Northern Fur Seal Food Habits

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains food habits samples, usually scats, collected opportunistically on northern fur seal rookeries and haulouts in Alaska from 1987 to present....

  8. Alaska Harbor Seal Glacial Surveys

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Floating glacial ice serves as a haul-out substrate for a significant number (10-15%) of Alaskan harbor seals, and thus surveying tidewater glacial fjords is an...

  9. Metal seal with soft inlays

    Energy Technology Data Exchange (ETDEWEB)

    Adamek, F.C.; Bridges, C.D.; Dach, A.J.

    1990-03-27

    This patent describes, in a well assembly having a wellhead containing a string of casing supported in the bore, an improved means for sealing against the casing. It comprises: a metal ring having an inner sealing side facing the casing; circumferential axially spaced metal bands protruding radially inward from the inner sealing side, defining cavities between the bands, each of the bands having a cylindrical sealing surface; the bands having a hardness that is less than the hardness of the casing; an inlay material of metal softer than the bands located in and initially partially filling the cavities, the sealing surfaces of the bands initially located a selected distance radially inward from the exterior surfaces of the inlay material; means for moving the inner sealing side into contact with the casing with a force sufficient to cause the bands to deform to a position substantially flush with the exterior surfaces of the inlay material when the ring is forced into contact with the casing; and the casing being movable relative to the ring is slight axial directions with the inlay material wiping onto the bands during the axial movement.

  10. Ergonomics and safety of manual bag sealing.

    OpenAIRE

    Groot, M.D. de; T. Bosch; Eikhout, S.M.; Vink, P.

    2005-01-01

    A variety of seals is used to close bags. Each seal has advantages and disadvantages. For shop assistants sealing bags could be a repetitive physically demanding action. Opening and closing the bags again can cause some discomfort or annoyance for consumers. Besides, it is an activity which can endanger safety, i.e., knives being used in opening, children swallowing the systems of sealing. To prevent these problems a new sealing system was developed. In this paper the opinion of shop assistan...

  11. Cover gas seals: 26-cover gas seal components. Quarterly progress report, October-December 1977

    Energy Technology Data Exchange (ETDEWEB)

    Steele, O.P. III; Horton, P.H.

    1977-01-01

    Progress in FY 1977 on the Cover Gas Seal Components and Fuel Handling Subcomponent Development programs included: CRBRP inflatable seal vendor qualification, static inflatable seal development, sodium wetting tests, and sodium carry over tests of hoist chain. (DLC)

  12. Pots for monks: ceramics and life in the Old Monastery of Baramus (Wadi al-Natrun, Egypt) 4th - 9th c.

    OpenAIRE

    Konstantinidou, Alexandra

    2012-01-01

    Since 1996, a team from Leiden University, under the direction of Dr. Karel Innemée, carries out archaeological fieldwork in the Wadi al-Natrun, at a site north of the Monastery of Virgin Mary of Baramūs. The systematic excavations have brought to light traces of a twin monastic compound including a central church, a square building and parts of the living quarters of the monks. The pottery dating to the period from the fourth until the ninth century is discussed in the PhD thesis entitled: P...

  13. Harbour seals (Phoca vitulina and rehabilitation

    Directory of Open Access Journals (Sweden)

    Nynke Osinga

    2010-09-01

    Full Text Available Throughout the past few decades, rehabilitation of seals has become an activity that is anchored in the present day society of many countries. Seals are primarily rehabilitated to help individual animals in distress. At the same time, the release of seals which would have otherwise died can be considered as a contribution to the population. Most rehabilitated seals are animals under one year of age. They are mainly orphans, weaned seals with complications and seals with a parasiticbronchopneumonia. For the optimal handling of seals and their diseases, centralised operations with quality standards are essential. Rehabilitation provides an instrument to monitor the health of the seal population and its ecosystem. Changes in stranding trends or the appearance of new diseases can be monitored. Moreover, rehabilitation is important to show the general public thestate of the marine environment. In the Netherlands there is significant social support for the rehabilitation of seals. Experience obtained with seal care is of importance in countries where urgent help of threatened seal species is required. Here individual seals are also ambassadors to raise support for the protection of this species in general. Given that the anthropogenic impact on the seals and their environment is extensive in the Wadden Sea, rehabilitation centres can compensate the consequences of this impact on individual seals as well as the population as a whole.

  14. Historical change in coral reef communities in Caribbean Panama

    OpenAIRE

    Cramer, Katie Lynn

    2011-01-01

    Scientists have witnessed a profound transformation in Caribbean coral reefs since the 1980s that includes a widespread mortality of corals and a shift in coral species composition. These changes have been widely attributed to modern disturbances such as coral disease and coral bleaching that have become prevalent in the most recent decades. However, the demise of corals in the Caribbean represents the most recent chapter in a long history of human alteration of Caribbean reef ecosystems. Cen...

  15. 50 CFR 216.180 - Specified activity.

    Science.gov (United States)

    2010-10-01

    ... macrorhynchus and G. melas). (3) Pinnipeds—hooded seal (Cystophora cristata), harbor seal (Phoca vitulina), spotted seal (P. largha), ribbon seal (P. fasciata), gray seal (Halichoerus grypus), elephant seal (Mirounga angustirostris and M. leonina), Hawaiian monk seal (Monachus schauinslandi), Mediterranean...

  16. Cenozoic rift formation in the northern Caribbean

    Science.gov (United States)

    Mann, P.; Burke, K.

    1984-01-01

    Rifts form in many different tectonic environments where the lithosphere is put into extension. An outline is provided of the distribution, orientation, and relative ages of 16 Cenozoic rifts along the northern edge of the Caribbean plate and it is suggested that these structures formed successively by localized extension as the Caribbean plate moved eastward past a continental promontory of North America. Evidence leading to this conclusion includes (1) recognition that the rifts become progressively younger westward; (2) a two-phase subsidence history in a rift exposed by upthrusting in Jamaica; (3) the absence of rifts east of Jamaica; and (4) the observation that removal of 1400 km of strike-slip displacement on the Cayman Trough fault system places the Paleogene rifts of Jamaica in an active area of extension south of Yucatan where the rifts of Honduras and Guatemala are forming today.

  17. New strategic directions for Caribbean CSM project.

    Science.gov (United States)

    1986-01-01

    Recent changes in the strategy of the Caribbean Contraceptive Social Marketing Project emphasize the condom, under the brand name, Panther. Since 1984, CCSMP began marketing their Perle rand of oral contraceptive, since dropped, in Barbados, St. Vincent and St. Lucia. Now wider commercial connections are envisioned, with support by CCSMP to promote generic brands. The Panther condom campaign will include an array of mass media, point-of-purchase and sporting event advertising. Pharmacies report that Panther is selling as well as the leading commercial brand. CCSMP is looking to introduce an ultra-thin condom and a vaginal foaming tablet. Market research, involving physicians and users as well as retail audits, indicates that although population in numbers alone is not a serious problem in the Caribbean, early pregnancy is a concern in the area. PMID:12341467

  18. Monolithic LTCC seal frame and lid

    Energy Technology Data Exchange (ETDEWEB)

    Krueger, Daniel S.; Peterson, Kenneth A.; Stockdale, Dave; Duncan, James Brent; Riggs, Bristen

    2016-06-21

    A method for forming a monolithic seal frame and lid for use with a substrate and electronic circuitry comprises the steps of forming a mandrel from a ceramic and glass based material, forming a seal frame and lid block from a ceramic and glass based material, creating a seal frame and lid by forming a compartment and a plurality of sidewalls in the seal frame and lid block, placing the seal frame and lid on the mandrel such that the mandrel fits within the compartment, and cofiring the seal frame and lid block.

  19. Gas Path Sealing in Turbine Engines

    Science.gov (United States)

    Ludwig, L. P.

    1978-01-01

    A survey of gas path seals is presented with particular attention given to sealing clearance effects on engine component efficiency. The effects on compressor pressure ratio and stall margin are pointed out. Various case-rotor relative displacements, which affect gas path seal clearances, are identified. Forces produced by nonuniform sealing clearances and their effect on rotor stability are discussed qualitatively, and recent work on turbine-blade-tip sealing for high temperature is described. The need for active clearance control and for engine structural analysis is discussed. The functions of the internal-flow system and its seals are reviewed.

  20. Art Music by Caribbean Composers: The Bahamas

    OpenAIRE

    Gangelhoff, Christine; LeGrand, Cathleen

    2011-01-01

    The cultural identity of the Bahamas owes much to its West African and British colonial heritages and to its physical proximity to the United States. A combination of African and European elements - rhyming spirituals, anthems, rushin' music at watch-night services, wake and setting-up songs; ringplays, fire dance, jump-in-dance, quadrille music (rake-‘n’-scrape music), goombay, and junkanoo - can be seen in musical traditions throughout the Caribbean, including art music.

  1. [Population dynamics and development in the Caribbean].

    Science.gov (United States)

    Boland, B

    1995-12-01

    The impact is examined of socioeconomic factors on Caribbean population dynamics. This work begins by describing the socioeconomic context of the late 1980s and early 1990s, under the influence of the economic changes and crises of the 1980s. The small size, openness, dependency, and lack of diversification of the Caribbean economies have made them vulnerable to external pressures. The Bahamas and Belize had economic growth rates exceeding 5% annually during 1981-90, but most of the countries had low or negative growth. Unemployment, poverty, the structural adjustment measures adopted in the mid-1980s, and declines in social spending exacerbated general economic conditions. In broad terms, the population situation of the Caribbean is marked by diversity of sizes and growth rates. A few countries oriented toward services and tourism had demographic growth rates exceeding 3%, while at least 7 had almost no growth or negative growth. Population growth rates reflected different combinations of natural increase and migration. Crude death rates ranged from around 5/1000 to 11/1000, except in Haiti, and all countries of the region except Haiti had life expectancies of 70 years or higher. Despite fertility decline, the average crude birth rate was still relatively high at 26/1000, and the rate of natural increase was 1.8% annually for the region. Nearly half of the regional population was under 15 or over 65 years old. The body of this work provides greater detail on mortality patterns, variations by sex, infant mortality, causes of death, and implications for policy. The discussion of fertility includes general patterns and trends, age specific fertility rates, contraceptive prevalence, levels of adolescent fertility and age factors in adolescent sexual behavior, characteristics of adolescent unions, contraceptive usage, health and social consequences of adolescent childbearing, and the search for solutions. The final section describes the magnitude and causes of

  2. Corporate Income Tax Competition in the Caribbean

    OpenAIRE

    Koffie Ben Nassar

    2008-01-01

    Motivated by the concern that corporate income tax (CIT) competition may have eroded the tax base, this paper calculates average effective tax rates to measure the impact of CIT competition, including the widespread use of tax holidays, on the tax base for 15 countries in the Caribbean. The results not only confirm erosion of the tax base, but also show that CIT holidays must be removed for recent tax policy initiatives (such as accelerated depreciation, loss carry forward provisions, and tax...

  3. Art Music by Caribbean Composers: The Bahamas

    Directory of Open Access Journals (Sweden)

    Gangelhoff, Christine

    2011-10-01

    Full Text Available The cultural identity of the Bahamas owes much to its West African and British colonial heritages and to its physical proximity to the United States. A combination of African and European elements - rhyming spirituals, anthems, rushin' music at watch-night services, wake and setting-up songs; ringplays, fire dance, jump-in-dance, quadrille music (rake-‘n’-scrape music, goombay, and junkanoo - can be seen in musical traditions throughout the Caribbean, including art music.

  4. Art Music by Caribbean Composers: Haiti

    Directory of Open Access Journals (Sweden)

    LeGrand, Cathleen

    2011-10-01

    Full Text Available Haïti has by far the longest history of independence of any of its Caribbean neighbors, having gained independence from France in 1804. Haïti's tradition of classical music takes root in its colonial heritage. Haïtian classical music, "mizik savant ayisyen," is derived from that "desire to retain European standards while including local features" of indigenous musical traditions (Grenier & Averill, 2007-2011.

  5. Cryogenic Flange and Seal Evaluation

    Science.gov (United States)

    Ramirez, Adrian

    2014-01-01

    The assembly of flanges, seals, and pipes are used to carry cryogenic fluid from a storage tank to the vehicle at launch sites. However, after a certain amount of cycles these raised face flanges with glass-filled Teflon gaskets have been found to have torque relaxation and are as a result susceptible to cryogenic fluid leakage if not re-torqued. The intent of this project is to identify alternate combinations of flanges and seals which may improve thermal cycle performance and decrease re-torque requirements. The general approach is to design a test fixture to evaluate leak characteristics between spiral and concentric serrations and to test alternate flange and seal combinations. Due to insufficient time, it was not possible to evaluate these different types of combinations for the combination that improved thermal cycle performance the most. However, the necessary drawings for the test fixture were designed and assembled along with the collection of the necessary parts.

  6. Stranded pumice in the western Caribbean

    Science.gov (United States)

    Herrick, J. A.; Henton De Angelis, S.; Toscano, M. A.

    2013-12-01

    Floating and washed-up pumices have been reported by scientific expeditions along the Caribbean Sea coast of the Central American Isthmus and the northern coast of South America since at least 1947. Local coastal communities have been utilizing this resource for many years. The rounded and buffered morphology of hand specimens is consistent with water-borne transit. The volcanically active Caribbean and Central American regions provide a number of candidates for source volcanoes and eruptions. We have attempted to identify this source using samples collected from Carrie Bow Cay and Placencia Beach, Belize; Tulum Beach, Mexico; Morrosquillo Bay, Colombia; and Galeta Point, Panama. We have tracked possible transport routes through the use of river drainage and ocean current maps. The criteria for comparing the products of potential source volcanoes (including Atitlán Caldera in Guatemala and Caribbean sources such as Mt. Pelée, Martinique and Soufrière Hills, Montserrat) were developed from the whole rock major and trace element geochemistry and the compositional and textural characteristics of pumice and their constituent minerals and glasses. The largest pumice sample collected from Carrie Bow Cay, Belize, was 18.5x12 cm with the typical, rounded morphology and distinctively stretched vesicles exhibited by this pumice collection.

  7. Stabilizing geometry for hydrodynamic rotary seals

    Science.gov (United States)

    Dietle, Lannie L.; Schroeder, John E.

    2010-08-10

    A hydrodynamic sealing assembly including a first component having first and second walls and a peripheral wall defining a seal groove, a second component having a rotatable surface relative to said first component, and a hydrodynamic seal comprising a seal body of generally ring-shaped configuration having a circumference. The seal body includes hydrodynamic and static sealing lips each having a cross-sectional area that substantially vary in time with each other about the circumference. In an uninstalled condition, the seal body has a length defined between first and second seal body ends which varies in time with the hydrodynamic sealing lip cross-sectional area. The first and second ends generally face the first and second walls, respectively. In the uninstalled condition, the first end is angulated relative to the first wall and the second end is angulated relative to the second wall. The seal body has a twist-limiting surface adjacent the static sealing lip. In the uninstalled condition, the twist-limiting surface is angulated relative to the peripheral wall and varies along the circumference. A seal body discontinuity and a first component discontinuity mate to prevent rotation of the seal body relative to the first component.

  8. Ergonomics and safety of manual bag sealing.

    Science.gov (United States)

    de Groot, Marinka D; Bosch, Tim; Eikhout, Sandra M; Vink, Peter

    2005-01-01

    A variety of seals is used to close bags. Each seal has advantages and disadvantages. For shop assistants sealing bags could be a repetitive physically demanding action. Opening and closing the bags again can cause some discomfort or annoyance for consumers. Besides, it is an activity which can endanger safety, i.e., knives being used in opening, children swallowing the systems of sealing. To prevent these problems a new sealing system was developed. In this paper the opinion of shop assistants, consumers and experts on several bag sealing systems was studied. It appeared that for sealing plastic bags, adhesive tape with paper is the best out of 4 systems, closely followed by adhesive tape. It is discussed that for the elderly, there is still room for improvement in opening bag seals. PMID:16219161

  9. Recent advances in magnetic liquid sealing

    Energy Technology Data Exchange (ETDEWEB)

    Raj, K.; Stahl, P.; Bottenberg, W.; True, D.; Martis, G.; Zook, C.

    1979-01-01

    In this paper recent work in design and testing of two special magnetic liquid seals extending the state-of-the-art of ferrofluidic sealing is discussed. These custom seals are a moving belt edge seal and an exclusion seal. The first seal provides a hermetic barrier to solid particulates expected to be present in enclosed nuclear environments. The second seal is used on a magnetic disk drive spindle and reduces the particulate contaminants in the memory disk pack area by up to three orders of magnitude. In addition, bearing life in the spindle is found to be doubled due to reduction of operating temperature. The fundamentals of magnetic fluid sealing are presented in terms of magnetic circuit design and physical properties of ferrofluids.

  10. Kinematic reconstruction of the Caribbean region since the Early Jurassic

    Science.gov (United States)

    Bochman, Lydian; van Hinsbergen, Douwe; Torsvik, Trond; Spakman, Wim; Pindell, James

    2014-05-01

    The Caribbean region results from a complex tectonic history governed by the interplay of the North American, South American and (Paleo-)Pacific plates, between which the Caribbean plate evolved since the early Cretaceous. During its entire tectonic evolution, the Caribbean plate was largely surrounded by subduction and transform boundaries, which hampers a quantitative integration into the global circuit of plate motions. In addition, reconstructions of the region have so far not resulted in a first order kinematic description of the main tectonic units in terms of Euler poles and finite rotation angles. Here, we present an updated, quantitatively described kinematic reconstruction of the Caribbean region back to 200 Ma integrated into the global plate circuit, and implemented with GPlates free software. Our analysis of Caribbean tectonic evolution incorporates an extensive literature review. To constrain the Caribbean plate motion between the American continents, we use a novel approach that takes structural geological observations rather than marine magnetic anomalies as prime input, and uses regionally extensive metamorphic and magmatic phenomena such as the Great Arc of the Caribbean, the Caribbean Large Igneous Province (CLIP) and the Caribbean high-pressure belt as correlation markers. The resulting model restores the Caribbean plate back along the Cayman Trough and major strike-slip faults in Guatemala, offshore Nicaragua, offshore Belize and along the Northern Andes towards its position of origin, west of the North and South American continents in early Cretaceous time. We provide the paleomagnetic reference frame for the Caribbean region by rotating the Global Apparent Polar Wander Path into coordinates of the Caribbean plate interior, Cuba, and the Chortis Block. We conclude that a plate kinematic scenario for a Panthalassa/Pacific origin of Caribbean lithosphere leads to a much simpler explanation than a Proto-Caribbean/Atlantic origin. Placing our

  11. Electronic Seal Stamping Based on Group Signature

    OpenAIRE

    Girija Srikanth

    2011-01-01

    This paper describes a new electronic official seal stamping based on Group Signature, USB Key. Bill/Contract in E-commerce must be seal stamped to gain tamper proof and non-repudiation. The seal stamping control is designed based on the certificate-based public key. This technique is more efficient for generating and verifying individual/group signatures in terms of computational efforts and communication costs. Web page electronic seal-stamping system is implemented which has been adopted b...

  12. Studying the Flow in the Labyrinth Sealing

    OpenAIRE

    Бондаренко, Г. А.; Бага, В. Н.

    2015-01-01

    This scientific paper is devoted to the studies of labyrinth seals, because advanced system studies were not carried out to a sufficient extent. The efficiency of the centrifugal compressor can be increased by improving the impermeability of internal labyrinth seals. Today we have no rigorous theory of labyrinth seals and the system technique that takes into consideration constructive peculiarities and processes that occur in the labyrinth seals is also not available. The available conception...

  13. Ultrasonic security seal with a cable

    International Nuclear Information System (INIS)

    The sonic delay line of the seal is prolongated by a truncated part and terminated by a spherical cap which can be marked. The sealing capsule has a bore adapted to the size of the truncated part of the identity module. The sealing cable is fastened between the sealing capsule and the module. Application is made to the monitoring of containers for dangerous or radioactive materials

  14. Multi-layer seal for electrochemical devices

    Science.gov (United States)

    Chou, Yeong-Shyung [Richland, WA; Meinhardt, Kerry D [Kennewick, WA; Stevenson, Jeffry W [Richland, WA

    2010-11-16

    Multi-layer seals are provided that find advantageous use for reducing leakage of gases between adjacent components of electrochemical devices. Multi-layer seals of the invention include a gasket body defining first and second opposing surfaces and a compliant interlayer positioned adjacent each of the first and second surfaces. Also provided are methods for making and using the multi-layer seals, and electrochemical devices including said seals.

  15. Pre-sealing risk analysis

    International Nuclear Information System (INIS)

    This report describes studies of accidents involving high-level radioactive waste before sealing the waste into a repository. The report summarizes work done in this area during Fiscal Year 1978 and supplements previous work. Models of accident probability, severity, and consequences are refined and extended

  16. Pre-sealing risk analysis

    Energy Technology Data Exchange (ETDEWEB)

    Ensminger, D.A.; Hough, M.E.; Oston, S.G.

    1980-01-07

    This report describes studies of accidents involving high-level radioactive waste before sealing the waste into a repository. The report summarizes work done in this area during Fiscal Year 1978 and supplements previous work. Models of accident probability, severity, and consequences are refined and extended.

  17. Positive fast sealing union connections

    Science.gov (United States)

    Kleber, C. M.

    1972-01-01

    Union connections are designed for connecting high pressure flexible hoses from gas storage manifolds to gas transport trailers. Connection uses O ring seals which can be quickly assembled and disassembled without use of wrenches, and which do not twist hose. Worn or damaged O rings are easily replaced.

  18. MONK Project and the Reference for Text Mining Applied to the Humanities in China%MONK项目及其对我国人文领域文本挖掘的借鉴

    Institute of Scientific and Technical Information of China (English)

    许鑫; 郭金龙; 蔚海燕

    2012-01-01

    MONK is a crossdisciplinary text mining project in the humanities undertaken by several universities and research institutes from America and Canada. This paper mainly discusses the text mining process of MONK as well as relevant tools, techniques and algorithm. Two case studies based on MONK are introduced to give details about the application of text mining to the humanities. Finally the authors summarize some unique applications of text mining applied to the humanities and discuss what we can learn from the MONK projeet.%针对美国和加拿大等高校共同承担的大型跨学科人文文本挖掘项目MONK,详细介绍其文本挖掘流程及相应的工具、技术和算法,并具体探讨利用MONK提供的工具进行文学文本挖掘研究的应用实例。最后总结人文领域文本挖掘方法的几类应用,提出该项目对我国人文领域应用文本挖掘的启示。

  19. Piston rod seal for a Stirling engine

    Energy Technology Data Exchange (ETDEWEB)

    Shapiro, W.

    1984-01-31

    In a piston rod seal for a Stirling engine, a hydrostatic bearing and differential pressure regulating valve are utilized to provide for a low pressure differential across a rubbing seal between the hydrogen and oil so as to reduce wear on the seal. 3 figs.

  20. Piston rod seal for a Stirling engine

    Energy Technology Data Exchange (ETDEWEB)

    Shapiro, Wilbur (Schenectady, NY)

    1984-01-01

    In a piston rod seal for a Stirling engine, a hydrostatic bearing and differential pressure regulating valve are utilized to provide for a low pressure differential across a rubbing seal between the hydrogen and oil so as to reduce wear on the seal.

  1. 28 CFR 0.146 - Seals.

    Science.gov (United States)

    2010-07-01

    ... 28 Judicial Administration 1 2010-07-01 2010-07-01 false Seals. 0.146 Section 0.146 Judicial... Personnel and Certain Administrative Matters § 0.146 Seals. The Director of the Federal Bureau of... the U.S. Marshals Service shall each have custody of the seal pertaining to his...

  2. 29 CFR 4002.11 - Seal.

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 9 2010-07-01 2010-07-01 false Seal. 4002.11 Section 4002.11 Labor Regulations Relating to Labor (Continued) PENSION BENEFIT GUARANTY CORPORATION GENERAL BYLAWS OF THE PENSION BENEFIT GUARANTY CORPORATION § 4002.11 Seal. The seal of the Corporation shall be in such form as may be approved from time...

  3. 7 CFR 330.110 - Seals.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 5 2010-01-01 2010-01-01 false Seals. 330.110 Section 330.110 Agriculture Regulations...; GARBAGE General Provisions § 330.110 Seals. (a) Use authorized; form. Whenever, in the opinion of the... United States, or interstate, seals may be applied to openings, packages, or articles requiring...

  4. 18 CFR 375.103 - Official seal.

    Science.gov (United States)

    2010-04-01

    ... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Official seal. 375.103... OF ENERGY REVISED GENERAL RULES THE COMMISSION General Provisions § 375.103 Official seal. The Commission hereby prescribes as its official seal, judicial notice of which shall be taken pursuant...

  5. 1 CFR 18.8 - Seal.

    Science.gov (United States)

    2010-01-01

    ... 1 General Provisions 1 2010-01-01 2010-01-01 false Seal. 18.8 Section 18.8 General Provisions ADMINISTRATIVE COMMITTEE OF THE FEDERAL REGISTER PREPARATION, TRANSMITTAL, AND PROCESSING OF DOCUMENTS PREPARATION AND TRANSMITTAL OF DOCUMENTS GENERALLY § 18.8 Seal. Use of a seal on an original document...

  6. 19 CFR 201.0 - Seal.

    Science.gov (United States)

    2010-04-01

    ... 19 Customs Duties 3 2010-04-01 2010-04-01 false Seal. 201.0 Section 201.0 Customs Duties UNITED STATES INTERNATIONAL TRADE COMMISSION GENERAL RULES OF GENERAL APPLICATION § 201.0 Seal. (a) Pursuant to... Trade Commission has adopted an official seal, the depiction of which follows: EC05OC91.026 (b)...

  7. 39 CFR 2.4 - Seal.

    Science.gov (United States)

    2010-07-01

    ... description of the Postal Service emblem is described at 39 CFR 221.7. ... 39 Postal Service 1 2010-07-01 2010-07-01 false Seal. 2.4 Section 2.4 Postal Service UNITED STATES... (ARTICLE II) § 2.4 Seal. (a) The Seal of the Postal Service is filed by the Board in the Office of...

  8. 40 CFR 147.3103 - Fluid seals.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 22 2010-07-01 2010-07-01 false Fluid seals. 147.3103 Section 147.3103... Tribes § 147.3103 Fluid seals. Notwithstanding §§ 144.28(f)(2) and 146.12(c) of this chapter, owners and operators shall not use a fluid seal as an alternative to a packer....

  9. Aerodynamic seal assemblies for turbo-machinery

    Energy Technology Data Exchange (ETDEWEB)

    Bidkar, Rahul Anil; Wolfe, Christopher; Fang, Biao

    2015-09-29

    The present application provides an aerodynamic seal assembly for use with a turbo-machine. The aerodynamic seal assembly may include a number of springs, a shoe connected to the springs, and a secondary seal positioned about the springs and the shoe.

  10. Ergonomics and safety of manual bag sealing.

    NARCIS (Netherlands)

    Groot, M.D. de; Bosch, T.; Eikhout, S.M.; Vink, P.

    2005-01-01

    A variety of seals is used to close bags. Each seal has advantages and disadvantages. For shop assistants sealing bags could be a repetitive physically demanding action. Opening and closing the bags again can cause some discomfort or annoyance for consumers. Besides, it is an activity which can enda

  11. Characteristics of a magnetic fluid seal and its motion in an axial variable seal gap

    Institute of Scientific and Technical Information of China (English)

    QIAN Ji-guo; YANG Zhi-yi

    2008-01-01

    With suitable assumptions a hydrodynamic model for the magnetic fluid motion in an axial variable gap seal was constructed, and the solution to the equations of the model was deduced. The characteristics of a magnetic fluid seal and its motion,including the speed and pressure distribution, and the seal capacity of a magnetic fluid rotating seal were systematically described.The factors affecting seal capacity and ways to improve seal capacity based on the hydrodynamic model are discussed. The basic condition for dynamic seal availability is presented. The rotating speed and radius of the shafts should be decreased. The work can provide proof of a seal design or suggest ways to improve the seal capacity of magnetic fluid seals.

  12. Privatization and human resource issues in the Caribbean sugar industry.

    OpenAIRE

    Thomas, C Y

    1995-01-01

    Examines privatization of the sugar plantations and sugar processing industry in the Caribbean region. Provides a detailed account of the current state of the Caribbean sugar industry. Examines the modalities and activities of the privatization process in the six countries. Identifies the forces which led to the nationalization policies of the 1970s and their reversal in the 1990s.

  13. 75 FR 32081 - National Caribbean-American Heritage Month, 2010

    Science.gov (United States)

    2010-06-07

    ... President of the United States of America A Proclamation Our Nation is linked to the Caribbean by our... bonds of slavery. All have strived to ensure their children could achieve something greater and have... of friendship between the United States and Caribbean countries. This year's devastating...

  14. Preliminary list of the cetaceans of the southern Caribbean

    NARCIS (Netherlands)

    Bree, van P.J.H.

    1975-01-01

    Students working at the Caribbean Marine Biological Institute (CARMABI) on the island of Curaçao asked the present author to provide them with a list of Cetacea occurring in the Caribbean. Until recently, compiling such a list was of little use as our knowledge concerning the cetaceans in the area w

  15. Street Festivals in the Caribbean: Geography Lessons for Elementary Teachers.

    Science.gov (United States)

    Lockledge, Ann

    1992-01-01

    Describes holiday celebrations in the Caribbean as important contemporary social events with historical, geographical, and cultural significance. Discusses the origins, development, and customs of the major Caribbean street festivals. Suggests that the holidays can combine all social science disciplines into focus and emphasize the geographic…

  16. 76 FR 71939 - Caribbean Fishery Management Council; Public Meeting

    Science.gov (United States)

    2011-11-21

    ... Participation in the Fisheries Management Process--Emily Muelhston. Yellowtail Update and Report on Data... National Oceanic and Atmospheric Administration RIN 0648-XA829 Caribbean Fishery Management Council; Public... (NOAA), Commerce. ACTION: Notice of public meetings. SUMMARY: The Caribbean Fishery Management...

  17. Effectiveness of lionfish removal efforts in the Southern Caribbean

    NARCIS (Netherlands)

    R. de León; K. Vane; P. Bertuol; V.C. Chamberland; F. Simal; E. Imms; M.J.A. Vermeij

    2013-01-01

    Lionfish Pterois volitans and P. miles have spread rapidly throughout the Caribbean Sea since 1985, where they negatively impact native fish communities and therefore are considered by some as the most damaging invasive species in the Caribbean to date. To combat further population growth and spread

  18. The European Union and the Caribbean Region: Situating the Caribbean Overseas Countries and Territories

    Directory of Open Access Journals (Sweden)

    Paul Sutton

    2012-10-01

    Full Text Available Abstract:This paper examines one important dimension of the European Union's (EU 'regional' engagement with the Caribbean: its relations with the Overseas Countries and Territories (OCT, with a particular focus on the possibility of furthering the policy goals of greater regional integration and cooperation. It does so in three parts. The first sets out the basis for current EU policy to the OCT which has been under discussion between the EU, the OCT and the four EU member states most involved (Denmark, France, the Netherlands and the United Kingdom since 2008. It reports EU proposals for change and the responses to them by the Caribbean OCTs. The second part examines EU policy toward promoting greater regional cooperation among the Caribbean OCTs and between them and some of the other Caribbean regional organizations. Three distinct frameworks for cooperation and integration are discussed: with independent states as established in the Caribbean Community, the Caribbean Forum and the Economic Partnership Agreement; with the French departments and collectivities; and with the Caribbean OCT. In each the position of the Caribbean OCT is situated. The final part briefly discusses the creation of a 'new' framework for regional cooperation specific for the Caribbean OCT which will most closely match their interests in the Caribbean.Resumen: La Unión Europea y la Región del Caribe: Situando a los Países y Territorios de Ultramar del CaribeEste ensayo analiza una dimensión importante de la Unión Europea (UE 'regional' y su compromiso con el Caribe: de igual manera sus relaciones con los Países y Territorios de Ultramar (PTU, con un enfoque particular sobre la posibilidad de promover los objetivos de la política con una mayor integración regional y cooperación. Este proceso se desglosa en tres partes. La primera establece la base para la actual política de la UE hacia los PTU, ya que esta ha sido objeto de debate entre los mismos y los cuatro

  19. Modelling leaktightness in a sealing system using elastomeric seal

    International Nuclear Information System (INIS)

    The container of radioactive gases in a transport cask is governed by the efficiency of the sealing system. The gas release of an elastomeric seal can have two causes: 1) the permeation through the elastomer which is an intrinsic characteristic for the material. 2) the leakage through geometrical defects (cracks, gaps, capillaries...) which are of a random nature. The purpose of this study is to develop representative models of these two leakage processes. In order to validate these models, experimental measurements were performed with a specific equipment ('LISE' test rig), to carry out tests with O-ring in a trapezoidal groove within a temperature range from -50degC to +300degC. The leakage rate was measured with a mass spectrometer using pure gases or gas mixtures. (J.P.N.)

  20. Experimental rotordynamic coefficient results for honeycomb seals

    Science.gov (United States)

    Elrod, David A.; Childs, Dara W.

    1988-01-01

    Test results (leakage and rotordynamic coefficients) are presented for seven honeycomb-stator smooth-rotor seals. Tests were carried out with air at rotor speeds up to 16,000 cpm and supply pressures up to 8.2 bars. Test results for the seven seals are compared, and the most stable configuration is identified based on the whirl frequency ratio. Results from tests of a smooth-rotor/smooth-stator seal, a teeth-on-stator labyrinth seal, and the most stable honeycomb seal are compared.

  1. Seal for objects containing nuclear fuels

    International Nuclear Information System (INIS)

    In order to mark and check the identity of objects - in particular, nuclear fuel elements, these may be sealed. Sealing is required in the context of nuclear safeguards. In the seal proposed here, a multitude of randomly distributed particles with different electromagnetic properties is contained in a hollow space in a body, where they are held by a pin. When the seal is taken off, they enter another, larger hollow space, losing their given order. A seal of this type is easy to check in the undamaged state. (UWI)

  2. Symmetries in Images on Ancient Seals

    CERN Document Server

    Sparavigna, Amelia

    2008-01-01

    In this paper, we discuss the presence of symmetries in images engraved on ancient seals, in particular on stamp seals. Mainly used to secure the containers from tampering and for owner's identification, these objects appeared during the 5th millennium BC in Mesopotamia. Usually the seals were engraved with simple images, suitable to communicate an immediate information. Rotational symmetries are already displayed by the most ancient stamp seals, whose images reach a quasi-perfect symmetry in their small circular or ovoid spaces. Bilateral symmetries are quite common in Egyptian scarab seals.

  3. 青海省僧侣饮茶型氟中毒现况分析%Brick-tea type fluorosis in monks in Qinghai Province

    Institute of Scientific and Technical Information of China (English)

    魏生英; 鲁青; 杨萍; 陈萍; 李生梅; 喇翠玲; 姜泓; 何多龙; 吴海坤

    2014-01-01

    Objective To know the distribution and harm of brick-tea type fluorosis in monks in Qinghai Province.Methods Twenty-eight temples were selected as survey sites from 28 counties of Qinghai Province.The amounts of drinking tea-water of each monk and the brick tea capita consumption per temple each year were recorded.Drinking water,tea water and urine samples of monks were collected and fluorine content was tested; dental fluorosis of children aged 8-12 years and of adult monks over the age of 16 were examined; clinical skeletal fluorosis of monks 16 years of age and older and X-ray skeletal fluorosis of all adult monks in the temple were examined.Fluorine content in drinking water,brick tea and urine was tested using F-ion selective electrode.Dental fluorosis was checked using the dental fluorine diagnostic criteria (WS/T 208-2001),and skeletal fluorosis was diagnosed based on the endemic skeletal fluorosis diagnosis standard (WS 192-1999).Results A total of 28 copies of drinking water samples were tested,and mean water fluoride was (0.26 ± 0.13) mg/L; in the 69 copies of brick tea,the mean fluoride value was 667.12 mg/kg; a total of 777 adult monks,the average daily drinking water of brick tea was (1 943.93 ± 1 078.93)ml; a total of 224 children monks,the average daily drinking water of brick tea was (795.09 ± 389.81)ml; annual per capita consumption of brick was 5.30 kg; adult daily fluoride intake was 4.47 mg,child was 1.83 mg; the prevalence rate of dental fluorosis was 29.07%(291/1 001),the prevalence rate of dental fluorosis of 8-12 years old children was 39.74%(93/234),the adult was 26.00%(202/777); the prevalence rate of clinical skeletal fluorosis was 4.76%(37/775); and the prevalence rate of X-ray skeletal fluorosis was 4.88%(2/41).The geometric mean of adult urinary fluoride was 1.11 mg/L(0.15-10.00 mg/L) of the 777 copies of urine samples tested,and that value of children was 1.23 mg/L(0.08-6.62 mg/L) of the 224 copies of samples

  4. WELFARE REGIMES IN LATIN AMERICA AND CARIBBEAN

    Directory of Open Access Journals (Sweden)

    Melisa Campana-Alabarce

    2015-06-01

    Full Text Available This article provides a characterization of Latin American and Caribbean Welfare regimes in historiographical perspective. Firstly, it makes a review of the emergence conditions of Welfare States in Western Europe and its core features, with particular emphasis on its role as a method to regulate inequalities in industrial capitalism. Dialoguing with it, then stops in the specific configurations that welfare regimes have taken in Latin America during the course of the twentieth century. Finally, it provides a map of its contemporary features and the major challenges that the States of the region face in his capacity as right guarantors for the future.

  5. Rotary seal with improved film distribution

    Energy Technology Data Exchange (ETDEWEB)

    Dietle, Lannie Laroy; Schroeder, John Erick

    2015-09-01

    The present invention is a generally circular rotary seal that establishes sealing between relatively rotatable machine components for lubricant retention and environmental exclusion, and incorporates seal geometry that interacts with the lubricant during relative rotation to distribute a lubricant film within the dynamic sealing interface. The features of a variable inlet size, a variable dynamic lip flank slope, and a reduction in the magnitude and circumferentially oriented portion of the lubricant side interfacial contact pressure zone at the narrowest part of the lip, individually or in combination thereof, serve to maximize interfacial lubrication in severe operating conditions, and also serve to minimize lubricant shear area, seal torque, seal volume, and wear, while ensuring retrofitability into the seal grooves of existing equipment.

  6. Seal dynamics on the Swedish west coast: Scenarios of competition as Baltic grey seal intrude on harbour seal territory

    Science.gov (United States)

    Svensson, Carl Johan

    2012-07-01

    The Kattegat-Skagerrak region on the Swedish west coast is home to an abundant harbour seal population (Phoca vitulina) and a small scattered grey seal population (Halichoerus grypus). In addition, grey seal from the growing population in the Baltic Sea frequently migrate into the Kattegat-Skagerrak. Harbour seals on the west coast of Sweden show relatively high population growth (approximately 9%) compared to the Baltic grey seal in ice-free habitats (approximately 6%), which, in theory, makes harbour seal the stronger competitor of the two in this region. However, incidents of disease in harbour seals that lower population growth are becoming more frequent. These epidemics are primarily caused by the Phocine Distemper Virus (PDV), and may reduce population size with up to 70%. This study models the average development under potential scenarios of competing harbour- and Baltic grey seal populations using Leslie matrices and the Lotka-Volterra model of inter-specific competition. The model is parameterised with previously published data, and resource overlap is incorporated through density dependent pup survival. Using numerical methods short- and long-term abundances are simulated under weak, moderate and strong competition and for different frequencies of PDV epidemics. Results show that the harbour seals are resilient to competition while exerting a negative effect on grey seal abundance under moderate to strong competition. Hence Baltic grey seal benefit from weaker levels of competition. Under moderate and strong competition grey seal abundance is a direct function of the PDV frequency as this reduces the competitive strength of harbour seals. Theoretically this means that higher frequencies of PDV or other pathogens epidemics could facilitate an expansion of Baltic grey seal into Kattegat-Skagerrak. Independent of interaction strength and frequency of epidemics the projected changes to abundances are slow (50-100 years), and even in exceedingly stable

  7. Mechanical Deformation of Ship Stern-Shaft Mechanical Face Seals

    Institute of Scientific and Technical Information of China (English)

    朱汉华; 刘正林; 温诗铸; 严新平

    2004-01-01

    In ship propeller shaft systems, the shaft seal is a mechanical face seal, which includes a stationary metal seal ring and a rotating ring.The seal faces are deformed with different loads.The deformation of the seal faces affects the performance of mechanical face seals, which leads to water leakage, so the seal face deformation must be analyzed.A mechanics model with deformation equations was developed to describe ship stern-shaft seals.An example was given to verify the deformation equations.The solution of the deformation equations gives a theoretical basis for the analysis of seal leakage and improvements of seal structures.

  8. Monje y soldado. La imagen masculina durante el Franquismo. Monk and soldier. The masculine image during the Franco regime.

    Directory of Open Access Journals (Sweden)

    González Aja, Teresa

    2005-10-01

    Full Text Available ResumenTras la Guerra Civil, en España se establece un nuevo régimen, que tiene como eje central la figura de Franco. Dentro de la imagen que el franquismo quiso dar, jugó un importante papel, al igual que en todos los regímenes totalitarios, la imagen id alizada del hombre. Se hará una defensa de mito del hombre perfecto, que incluye lo corporal, aunque siempre estará más próximo a la imagen del caballero perfecto, del "monje-soldado", hecho de austeridad, de espíritu de sacrificio, pero también de impasibilidad ante la sangre vertida, que al modelo corporal desarrollado en el fascismo italiano y en el nazismo alemán. El deporte se deja en manos de un nuevo organismo que iba a ser una delegación o agencia de la Secretaría General del Movimiento Nacional, el único partido político permitido y una incómoda alianza de falangistas, monárquicos y carlistas. Su misión era usar el ámbito deportivo internacional para una exhibición de la virilidad y la furia españolas, lo mismo que habían hecho los regímenes alemán e italiano en la década de 1930-40. Se descartó, por tanto, desde el principio, toda posibilidad de que el deporte pudiera tener cierto grado de independencia respecto al nuevo poder político. En consecuencia hablar del culto al cuerpo, de deporte, durante el periodo franquista, resulta hablar de la adaptación de distintos modelos a distintas etapas y a las necesidades de un personaje muy concreto.AbstractAfter the Civil War, in Spain a new regime turns up. Franc was the central figure of that new situation. The Francoism wanted to give an idealizada image of the man, like in all the totalitarian regimes. A defense of myth of the perfect man will become, which included his physical appearence, although it would always be nearer the image of the perfect gentelman, of the "soldier-monk ", a compound of austerity, spirit of sacrifice, an impassiveness when faced with bloodshed, that to the developed corporal model in

  9. Water Security and Services in the Caribbean

    Directory of Open Access Journals (Sweden)

    Adrian Cashman

    2014-05-01

    Full Text Available The efficient management of water resources and services continues to be a concern in many of the small island states of the Caribbean. There are growing concerns over the ability of governments in the region to ensure the good management and provision of water without jeopardizing economic growth and the maintenance of social well-being. This paper provides an overview of the major factors influencing the water security facing the Caribbean Region and how the emerging concerns are being addressed. The key challenges and vulnerabilities may be summarized as lack of data and barriers to making available what information there is. Forward planning has been largely neglected and is symptomatic of a lack of appreciation of the need for having national water policies. In this respect Jamaica’s development of a national master water plan serves as a good example of what is needed. Water service providers have to be efficient, well managed and allowed to do their job. This means that they have to be on a sound financial footing. The challenge is to find the balance between appropriate political and regulatory oversight and the autonomy of water managers and service providers.

  10. Artrópodos presentes en nidos de cotorra Myiopsitta monachus monachus (Aves: Psittacidae Arthropods in Monk Parakeet nests (Aves: Psittacidae

    Directory of Open Access Journals (Sweden)

    Rosana Aramburú

    2009-06-01

    Full Text Available El objetivo de este trabajo es comunicar una lista de la artropodofauna que se encuentra en los nidos de cotorra (Myiopsitta monachus monachus en distintas localidades de la provincia de Buenos Aires, Argentina. Se colectó un nido y 43 camas de material vegetal fresco que las cotorras depositan en las cámaras de cría. Se extrajeron los artrópodos, que se identificaron bajo lupa binocular y se caracterizaron por su nicho trófico. Se encontraron especies de la clase Arachnida (Acarina, Pseudoescorpionida y Araneae, principalmente depredadoras y hematófagas; mientras que dentro de la clase Insecta se encontraron especies hematófagas, depredadoras, detritívoras, fitófagas, nectarívoras, y xilófagas. Los órdenes más representados fueron Diptera (8 familias y Coleoptera (12 familias. El resto de las especies pertenecieron a los órdenes Collembola, Psocoptera, Hymenoptera, Phthiraptera, Hemiptera y Lepidoptera.The objective of this work is to communicate a list of artropodofauna which is in Monk Parakeet (Myiopsitta monachus monachus nests at several localities in Buenos Aires province. One nest and 43 beds of fresh green material that the Monk Parakeets deposited in the breeding chamber were collected. Arthropods were extracted, identified under binocular microscope, and characterized by their diets. Species were found whitin class Arachnida (Acarina, Pseudoescorpionida and Araneae, mainly predators and hematophagous. Within class Insecta, were found blood-sucking species, predators, detritivores, phytophagous, nectarivorous, and xilophagous, among others. The orders most represented were Diptera (8 families and Coleoptera (12 families. The rest of the species belonged to the orders Collembola, Psocoptera, Hymenoptera, Phthiraptera, Hemiptera and Lepidoptera.

  11. Numerical Analysis of Magnetic Fluid Sealing Performance

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    The sealing performance of magnetic fluid is related to the magnetic fluid itself. Many factors can influence the magnetic field and the seal pressure differences of magnetic fluid seals, such as the sealing gap, the shaft eccentricity, the shaft diameter, the volume of the magnetic fluid and the centrifugal force. These factors are analyzed by numerical computation . When the seal material and structure are the same, the seal pressure difference is directly proportional to the magnetic field intensity and the saturation magnetization of the magnetic fluid. The sealing performance of the magnetic fluid will reduce with the increase of the sealing gap and shaft eccentricity. The sealing performance will increase with the volume of the magnetic fluid and decrease with the increase of the shaft diameter taking gravity into account. The increase of the shaft diameter is the same as the reduction of the volume of the magnetic fluid. The magnetic fluid cross-section can change because of the centrifugal force. Some improvements can reduce the influence of the centrifugal force. The centrifugal force can be utilized to improve the sealing performance.

  12. 明正统刻本《篆书金刚经》研究%The Block Printed Edition of The Seal Script Diamond Sutra in Ming Dynasty

    Institute of Scientific and Technical Information of China (English)

    杨之峰

    2011-01-01

    The seal script Diamond Sutra,also known as Diamond Sutra in thirty-two styles of writing,is a characteristic ancient book.This paper discusses the script evolution in all ages,and the development of the seal script from the monk Mengying' eighteen styles%《篆书金刚经》又称《三十二体金刚经》是一部极具特色的古籍文献。文章从古今字体的演变,宋初僧人梦英18体篆书到道肯32体篆书的发展,论述了《篆书金刚经》的形成过程;着重从明正统二年刻本默庵后序、北京石景山区以壁画著名的法海寺碑文等,考证出刻书者李福善即明英宗时极有权势的太监李童;最后简述了该书的文字、艺术、历史价值。

  13. Medical Tourism in the Caribbean: A Call for Cooperation

    Directory of Open Access Journals (Sweden)

    K Adams

    2014-09-01

    Full Text Available Numerous Caribbean countries have discussed plans for developing medical tourism activities as a means of tourism diversification and economic development. These plans have been encouraged and shaped by outside agencies whose influence might cause a race-to-the-bottom environment between countries competing for the same niche of tourists. This paper provides a call for cooperation between local health officials in the Caribbean region to coordinate plans for the development of a medical tourism industry that enhances regional access to specialized health care and facilitates the movement of patients and healthcare resources throughout the region to enhance health equity and health outcomes in the Caribbean.

  14. Latin America and the Caribbean : A Time to Choose, Caribbean Development in the 21st Century

    OpenAIRE

    World Bank

    2005-01-01

    This report seeks to discuss the critical constraints to sustainable, job-creating growth, and to present policy options for the region and country Governments to stimulate such growth. It analyzes growth performance in the Caribbean over the last four decades, and highlights key determinants of past and also future growth. Given the recent deterioration in government finances, the report then studies key areas of government expenditure. A discussion of the climate for private investment foll...

  15. Cure-in-place process for seals

    Science.gov (United States)

    Hirasuna, Alan R.

    1981-01-01

    A cure-in-place process which allows a rubber seal element to be deformed to its service configuration before it is cross-linked and, hence, is a plastic and does not build up internal stress as a result of the deformation. This provides maximum residual strength to resist the differential pressure. Furthermore, the process allows use of high modulus formulations of the rubber seal element which would otherwise crack if cured and then deformed to its service configuration, resulting in a seal which has better gap bridging capability. Basically, the process involves positioning an uncured seal element in place, deforming it to its service configuration, heating the seal element, curing it in place, and then fully seating the seal.

  16. Coalbed methane reservoir boundaries and sealing mechanism

    Institute of Scientific and Technical Information of China (English)

    SU Xianbo; LIN Xiaoying; LIU Shaobo; SONG Yan

    2005-01-01

    It is important to investigate the coalbed methane reservoir boundaries for the classification, exploration, and development of the coalbed methane reservoir.Based on the investigation of the typical coalbed methane reservoirs in the world, the boundaries can be divided into four types: hydrodynamic boundary, air altered boundary,permeability boundary, and fault boundary. Hydrodynamic and air altered boundaries are ubiquitous boundaries for every coalbed methane reservoir. The four types of the fault sealing mechanism in the petroleum geological investigation (diagen- esis, clay smear, juxtaposition and cataclasis) are applied to the fault boundary of the coalbed methane reservoir. The sealing mechanism of the open fault boundary is the same with that of the hydrodynamic sealing boundary.The sealing mechanism of the permeability boundary is firstly classified into capillary pressure sealing and hydrocarbon concentration sealing. There are different controlling boundaries in coalbed methane reservoirs that are in different geological backgrounds. Therefore, the coalbed methane reservoir is diversiform.

  17. Sealing device for nuclear power reactor

    International Nuclear Information System (INIS)

    The sealing device is to stop a leak on a reactor pressure vessel where control of the output of reactor is arranged by control rods which are handled by drives connected to control rods and bars in tubes which penetrate the reactor wall. Each tube has a supporting case on the inside of the wall opened to the hole and welded to the tube. The weld may crack and leak. Then an inner sealing tube made of soft metallic material whose outer surface is conical is drawn on to the tube over which an outer sealing tube made of hard metallic material and conical inner surface is placed. On both sides of the crack special adhering planes are formed between the inner sealing tube and the tubes or the supporting case. When the outer sealing tube is pressed over the inner sealing tube, the conical surfaces tighten it against the tube and the supporting case

  18. Air riding seal for a turbine

    Science.gov (United States)

    Mills, Jacob A; Brown, Wesley D; Sexton, Thomas D; Jones, Russell B

    2016-07-19

    An air riding seal between a rotor and a stator in a turbine of a gas turbine engine, where an annular piston is movable in an axial direction within a housing that extends from the stator, and a bellows is secured to the annular piston to form a flexible air passageway from a compressed air inlet through the annular piston and into a cushion cavity that forms an air riding seal between the annular piston and the rotor sealing surface. In another embodiment, a flexible seal secured to and extending from the annular piston forms a sealing surface between the annular piston chamber and the annular piston to provide a seal and allow for axial movement.

  19. NEW POLIMER SEALING FLUID STOPS MUD LOSS

    Directory of Open Access Journals (Sweden)

    Stanislaw Stryczek

    1989-12-01

    Full Text Available This paper deals with a composition of sealing fluid, prepared from acrylic acid salt water solution Solakryl M. Laboratory test results of technological properties of its modifications with mineral agents are shown. A new method of sealing mud loss operations with given sealing liquid is discussed along with comments on effects of its use for stopping mud loss in case of freeze-well drilling is described (the paper is published in Croatian.

  20. Fracture behavior across interfaces in seal lithologies

    OpenAIRE

    Petrie, Elizabeth S; Evans, James P; Jeppson, Tamara

    2011-01-01

    Faults and fracture networks at depth are important fluid pathways, especially in fine-grained, low permeability seal lithologies. Discontinues in sealing lithologies can create seal bypass systems, leading to the failure of CO2 geosequestration sites or hydrocarbon traps. We characterize the occurrence of and changes in discontinuity patterns and the associated changes in elastic moduli across sedimentologic interfaces to document the importance of these discontinuities for fluid management ...

  1. Byzantine seals from the Ras fortress

    Directory of Open Access Journals (Sweden)

    Ivanišević Vujadin

    2013-01-01

    Full Text Available In this paper, seals found at the location of the Ras fortress (Tvrđava Ras have been published. Inscriptions on these seals show that they used to belong to persons which could be identified with certain military commanders who served under Alexios I Komnenos. The seals in question are: the seals of protonobelissimos Eustathios Kamytzes, Constantine Dalassenos Doukas, protoproedros and doux Constantine Kekaumenos and a certain person called Alexios. [Projekat Ministarstva nauke Republike Srbije, br. 177021 i br. 177032

  2. Electronic Seal Stamping Based on Group Signature

    Directory of Open Access Journals (Sweden)

    Girija Srikanth

    2011-05-01

    Full Text Available This paper describes a new electronic official seal stamping based on Group Signature, USB Key. Bill/Contract in E-commerce must be seal stamped to gain tamper proof and non-repudiation. The seal stamping control is designed based on the certificate-based public key. This technique is more efficient for generating and verifying individual/group signatures in terms of computational efforts and communication costs. Web page electronic seal-stamping system is implemented which has been adopted by CNBAB platform since Mar., 2008

  3. Self-acting geometry for noncontact seals

    Science.gov (United States)

    Allen, G. P.

    1981-01-01

    Performance ot two self acting seal designs for a liquid oxygen (LOX) turbopump was predicted over ranges of pressure differential and speed. Predictions were compared with test results. Performance of a radial face seal for LOX was predicted up to 448 N/cu cm and 147 m/sec. Performance of a segmented circumferential seal for helium was predicted up to 69 N/cu cm and 189 m/sec. Results confirmed predictions of noncontact operation. Qualitative agreement between test and analysis was found. The LOX face seal evidently operated with mostly liquid in the self acting geometry and mostly gas across the dam.

  4. Seal for an object containing nuclear fuel

    International Nuclear Information System (INIS)

    This seal which cannot be counterfeited, specially for sealing nuclear objects, e.g. fuel rods, not only makes any damage which has taken place obvious, but makes identification according to a key possible. For this purpose a minimum number of 'particles' or small bodies, which are identical but of different permeability, are fixed inside a short tube during 'loading' of the seal in a certain or an accidental sequence. The sequence of the spheres, which represents a key, can only be determined by special electromagnetic measuring equipment. On first opening the seal, this key sequence is irrevocably destroyed. (HP)

  5. 28 CFR 803.3 - Use of the seal.

    Science.gov (United States)

    2010-07-01

    ... 28 Judicial Administration 2 2010-07-01 2010-07-01 false Use of the seal. 803.3 Section 803.3... SEAL § 803.3 Use of the seal. (a) The Agency seal is used by Agency staff for official agency business as approved by the appropriate Director or designee. (b) Use of the Agency seal by any person...

  6. 30 CFR 75.337 - Construction and repair of seals.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Construction and repair of seals. 75.337... repair of seals. (a) The mine operator shall maintain and repair seals to protect miners from hazards of... other potential electric ignition sources from the area to be sealed when constructing seals, unless...

  7. Influence of Rocket Engine Characteristics on Shaft Sealing Technology Needs

    Science.gov (United States)

    Keba, John E.

    1999-01-01

    This paper presents viewgraphs of The Influence of Rocket Engine Characteristics on Shaft Sealing Technology Needs. The topics include: 1) Rocket Turbomachinery Shaft Seals (Inter-Propellant-Seal (IPS) Systems, Lift-off Seal Systems, and Technology Development Needs); 2) Rocket Engine Characteristics (Engine cycles, propellants, missions, etc., Influence on shaft sealing requirements); and 3) Conclusions.

  8. Non-dismountable sealed connections

    International Nuclear Information System (INIS)

    The invention relates to a method for manufacturing a non-dismountable sealed convection between two conduits made of non mutually weldable metals. The method is characterized in that its consists in assembling two plates, each of which being of a metal weldable to one of the two conduits, in centrally boring in these plates a circular hole of the same diameter with the conduit inner cross-section, and in that each conduit is welded to its respective plate, coaxially with the respective hole. This can be applied to conduits for the circulation of radioactive substances in the nuclear field

  9. Magnetohydrodynamic (MHD) channel corner seal

    Science.gov (United States)

    Spurrier, Francis R.

    1980-01-01

    A corner seal for an MHD duct includes a compressible portion which contacts the duct walls and an insulating portion which contacts the electrodes, sidewall bars and insulators. The compressible portion may be a pneumatic or hydraulic gasket or an open-cell foam rubber. The insulating portion is segmented into a plurality of pieces of the same thickness as the electrodes, insulators and sidewall bars and aligned therewith, the pieces aligned with the insulator being of a different size from the pieces aligned with the electrodes and sidewall bars to create a stepped configuration along the corners of the MHD channel.

  10. Caribbean Seasonal and/or Area Closures GIS data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data represents the geographic area described in Title 50 CFR Part 622, Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic, Subpart S - Reef Fish...

  11. Faults of the Caribbean Region (flt6bg)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This dataset describes faults and structural features of the Caribbean region (Anguilla, Antigua and Barbuda, Aruba, Bahamas, Barbados, Belize, British Virgin...

  12. Surface Geology of the Caribbean Region (geo6bg)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This dataset includes polygons that describe the geologic age of surface outcrops of bedrock of the Caribbean region (Anguilla, Antigua and Barbuda, Aruba, Bahamas,...

  13. Caribbean area food irradiation feasibility study

    International Nuclear Information System (INIS)

    The US Agency for International Development funded the Caribbean Area Food Irradiation Feasibility Study (CAFI) through the US National Food Processors Association and with the collaboration of the US Department of Energy. This study focused on the economic, technical, financial, political and social feasibility of transferring food irradiation technology to the Caribbean area. The study focuses on three areas including the benefits to small farmers and nations interested in the export of crops, including non-traditional tropical commodities. The Feasibility Study Team conducted field work in Guatemala, Haiti, and Trinidad. The benefits of irradiation technology have been shown to have an impact particularly on the small farmer who is more capable of producing non-traditional crops intended for international export marketing. In Haiti, the anthropologists working on the CAFI study found that 74,000 individuals will be directly affected by the ban on the postharvest fumigant ethylene dibromide. Irradiation technology can not only provide the quarantine security needed to allow crops requiring quarantine treatment to move into international trade, but it can promote international co-operation in technology transfer. Training and safety issues related to the transfer, operation, and disposal of nuclear materials must be considered and point out the need for adequate regional co-operative programmes. Research and training programmes will be needed to augment the implementation of food irradiation processing by the private sector. Irradiation firms planning facilities in developing countries may need to provide crop production information, international marketing intelligence, and other assistance needed to integrate an irradiator into the overall postharvest food system. (author)

  14. Caribbean women: changes in the works

    Directory of Open Access Journals (Sweden)

    María Isabel Quiñones-Arocho

    1992-01-01

    Full Text Available [First paragraph] The women of Azua: work and family in the rural Dominican Republic, by BARBARA FINLAY. New York: Praeger, 1989. xi + 190 pp. (Cloth US$ 35.00 The psychosocial development of Puerto Rican women, edited by CYNTHIA T. GARCIA COLL & MARIA DE LOURDES MATTEI. New York: Praeger, 1989. xiii + 272 pp. (Cloth US$ 45.00 Women and the sexual division oflabour in the Caribbean, edited by KEITH HART. Mona, Jamaica: Consortium Graduate School of Social Sciences, UWI, 1989. 141 pp. (Paper n.p. The three books under review work have a common theme: the impact of changing gender expectations on Caribbean women. The authors are mainly concerned with recent political and economie changes that might have contributed to either the improvement or deterioration of women's status in these societies. The questions raised by the contributors are strikingly similar: What has been the impact of dependent economie development on women's lives and has this resulted in increased labor participation (a problem explored for rural Dominican women as well as for Jamaican and Barbadian women or in the migration to metropolitan centers, with its psychosocial consequences (an issue raised for Puerto Rican women living in the United States? If patriarchal values (often referred to as traditional values prevail in these societies, then what impact might wage work, migration, or improved education have on those values? Could it be the disintegration of the nuclear family with an increased proportion of female-headed households (Hart, higher rates of mental illness as a result of dysfunctional aceulturation (Garcia Coll and Mattei, or even an improvement of women's status within their families and communities (Finlay?

  15. Seals at sea: modelling seal distribution in the German bight based on aerial survey data

    NARCIS (Netherlands)

    Herr, H.; Scheidat, M.; Lehnert, K.; Siebert, U.

    2009-01-01

    The Wadden Sea is an important habitat for harbour seals and grey seals. They regularly haul-out on sandbanks and islands along the coast. Comparably little is known about the time seals spend at sea and how they use the remainder of the North Sea. Yet, human activity in offshore waters is increasin

  16. Albinistic common seals (Phoca vitulina) and melanistic grey seals (Halichoerus grypus) rehabilitated in the Netherlands

    NARCIS (Netherlands)

    Osinga, Nynke; 't Hart, Pieter; Vader, Pieter C. van Voorst

    2010-01-01

    The Seal Rehabilitation and Research Centre (SRRC) in Pieterburen, The Netherlands, rehabilitates seals from the waters of the Wadden Sea, North Sea and Southwest Delta area. Incidental observations of albinism and melanism in common and grey seals are known from countries surrounding the North Sea.

  17. Quality Assurance in Emergency Medicine - A Caribbean Perspective

    OpenAIRE

    Sammy, I.A.; Paul, J.F.; Watson, H; Williams-Johnson, J; Bullard, C.

    2013-01-01

    Purpose – Emergency medicine is a new specialty in the Caribbean. With the development of specialist training over the past 20 years, the issues of quality assurance and governance have become more prominent. The purpose of this paper is to explore the successes and challenges of implementing systems of quality assurance in this unique environment, highlighting issues peculiar to the Caribbean setting. Design/methodology/approach – This paper is a review of current practice in the e...

  18. Microfinance Issues and Challenges in the Anglophone Caribbean

    OpenAIRE

    Mark D. Wenner; Geoffrey Chalmers

    2001-01-01

    The purpose of this paper is fourfold. First, it seeks to highlight the general characteristics of the microenterprise sector and the microfinance industry in the Anglophone Caribbean. Second, it will examine the main factors that help explain the differences in the development of sustainable microfinance in the Anglophone Caribbean compared to Latin America. Third, it will outline what the Inter-American Development Bank, a major donor organization, has done to support microfinance and micro...

  19. Corkscrew Seals: Grey Seal (Halichoerus grypus) Infanticide and Cannibalism May Indicate the Cause of Spiral Lacerations in Seals

    Science.gov (United States)

    2016-01-01

    Large numbers of dead seals with characteristic spiral lesions have been washing ashore around the North Atlantic over the past two decades. Interactions with ship propellers and shark predation have been suggested as the likely causal mechanisms. However, new evidence points towards a more likely candidate: grey seal predation. An adult male grey seal was observed and recorded catching, killing and eating five weaned grey seal pups over a period of one week on the Isle of May, Scotland. A further 9 carcasses found in the same area exhibited similar injuries. Post mortem analysis of lesions indicated the wound characteristics were similar to each other and in 12 of the 14 carcasses analysed, were indistinguishable from carcasses previously attributed to propeller interaction. We therefore propose that most of the seal carcasses displaying spiral lacerations in the UK are caused by grey seal predation. Cases in other locations should be re-evaluated using the scoring system presented here to identify whether grey seal predation is a major cause of mortality in phocid seals. PMID:27254025

  20. Corkscrew Seals: Grey Seal (Halichoerus grypus Infanticide and Cannibalism May Indicate the Cause of Spiral Lacerations in Seals.

    Directory of Open Access Journals (Sweden)

    Andrew Brownlow

    Full Text Available Large numbers of dead seals with characteristic spiral lesions have been washing ashore around the North Atlantic over the past two decades. Interactions with ship propellers and shark predation have been suggested as the likely causal mechanisms. However, new evidence points towards a more likely candidate: grey seal predation. An adult male grey seal was observed and recorded catching, killing and eating five weaned grey seal pups over a period of one week on the Isle of May, Scotland. A further 9 carcasses found in the same area exhibited similar injuries. Post mortem analysis of lesions indicated the wound characteristics were similar to each other and in 12 of the 14 carcasses analysed, were indistinguishable from carcasses previously attributed to propeller interaction. We therefore propose that most of the seal carcasses displaying spiral lacerations in the UK are caused by grey seal predation. Cases in other locations should be re-evaluated using the scoring system presented here to identify whether grey seal predation is a major cause of mortality in phocid seals.

  1. Corkscrew Seals: Grey Seal (Halichoerus grypus) Infanticide and Cannibalism May Indicate the Cause of Spiral Lacerations in Seals.

    Science.gov (United States)

    Brownlow, Andrew; Onoufriou, Joseph; Bishop, Amanda; Davison, Nicholas; Thompson, Dave

    2016-01-01

    Large numbers of dead seals with characteristic spiral lesions have been washing ashore around the North Atlantic over the past two decades. Interactions with ship propellers and shark predation have been suggested as the likely causal mechanisms. However, new evidence points towards a more likely candidate: grey seal predation. An adult male grey seal was observed and recorded catching, killing and eating five weaned grey seal pups over a period of one week on the Isle of May, Scotland. A further 9 carcasses found in the same area exhibited similar injuries. Post mortem analysis of lesions indicated the wound characteristics were similar to each other and in 12 of the 14 carcasses analysed, were indistinguishable from carcasses previously attributed to propeller interaction. We therefore propose that most of the seal carcasses displaying spiral lacerations in the UK are caused by grey seal predation. Cases in other locations should be re-evaluated using the scoring system presented here to identify whether grey seal predation is a major cause of mortality in phocid seals. PMID:27254025

  2. On St. Sava’s (svetosavski) redaction of Holy Monks images in Mileševa church narthex: Contribution to research in iconographic common places in the Nemanjićs’ church foundation

    OpenAIRE

    Milanović Vesna D.

    2002-01-01

    This paper discusses the possibility of further completing the to-date analyses on the content and scope of the painting program in the Mileševa narthex, representing a striking two-band frieze of the images of holy monks. This new examination does not ignore the already recognized distinguishing marks, and pays special attention to investigating possible relationships and links with the solutions in some other monuments of the same era not having been previously researched in detail. The und...

  3. Natural processes involved in the formation of Pleistocene bone assemblages in continental South-East Asian caves : the case of the cave of the monk (Chiang Dao Wildlife Sanctuary, Thailand).

    OpenAIRE

    Lenoble, Arnaud; Zeitoun, Valéry; Laudet, Frédéric; Seveau, Arnoult; Doyasa, Tasana

    2006-01-01

    A large paleontological assemblage typical of Ailuropoda-Stegodon fauna was discovered in the Cave of the Monk, in northern Thailand. Geological and taphonomic approaches were conducted in order to determine site formation processes. A sedimentological study indicated that the fossiliferous layer resulted from mediumsize burrowing animals occupying the cave. Bone surface analysis confirmed that Porcupine was the main, if not exclusive, bone accumulator. A bone accumulation rate was calculated...

  4. Cover gas seals. 11 - FFTF-LMFBR seal-test program, January-March 1974

    International Nuclear Information System (INIS)

    The objectives of this program are to: (1) conduct static and dynamic tests to demonstrate or determine the mechanical performance of full-size (cross section) FFTF fuel transfer machine and reactor vessel head seals intended for use in a sodium vapor - inert gas environment, (2) demonstrate that these FFTF seals or new seal configuration provide acceptable fission product and cover gas retention capabilities at LMFBR Clinch River Plant operating environmental conditions other than radiation, and (3) develop improved seals and seal technology for the LMFBR Clinch River Plant to support the national objective to reduce all atmospheric contaminations to low levels

  5. Three-fold Narration in Novels about Strange Monks in Records of Taiping Era (太平广记)%《太平广记》异僧小说的“三重”叙事

    Institute of Scientific and Technical Information of China (English)

    曾礼军

    2014-01-01

    With religious , biographical and aesthetic features , novels about strange monks in Records of Taip-ing Era (太平广记) represent the narrative achievement of monk biography in the Jin and Tang dynasties .In the magical narration , the philosophic thought and nature of Buddhism are accommodated .In the biographical narra-tion, the mystical concept and religious truth are attached .In the aesthetic narration , the monk images and reli-gious magic are depicted .%《太平广记》异僧小说整体上代表了晋唐时期僧传文学的叙事成就,有着宗教性、史传性和审美性三位一体的叙事特征。其神异叙事善于融通佛教哲思和启悟佛性体认;史传叙事注重烘托神异观念和突出宗教真实;审美叙事重视刻画僧人形象和描绘宗教神奇。

  6. Conversion of α-linolenic acid to long-chain omega-3 fatty acid derivatives and alterations of HDL density subfractions and plasma lipids with dietary polyunsaturated fatty acids in Monk parrots (Myiopsitta monachus).

    Science.gov (United States)

    Petzinger, C; Larner, C; Heatley, J J; Bailey, C A; MacFarlane, R D; Bauer, J E

    2014-04-01

    The effect of α-linolenic acid from a flaxseed (FLX)-enriched diet on plasma lipid and fatty acid metabolism and possible atherosclerosis risk factors was studied in Monk parrots (Myiopsitta monachus). Twenty-four Monk parrots were randomly assigned to diets containing either 10% ground SUNs or 10% ground FLXs. Feed intake was calculated daily. Blood samples, body condition scores and body weights were obtained at -5 weeks, day 0, 7, 14, 28, 42 and 70. Plasma samples were analysed for total cholesterol, free cholesterol, triacylglycerols and lipoproteins. Phospholipid subfraction fatty acid profiles were determined. By day 70, the FLX group had significantly higher plasma phospholipid fatty acids including 18:3n-3 (α-linolenic acid), 20:5n-3 (eicosapentaenoic acid) and 22:6n-3 (docosahexaenoic acid). The sunflower group had significantly higher plasma phospholipid levels of 20:4n-6 (arachidonic acid). By day 70, the high-density lipoprotein (HDL) peak shifted resulting in significantly different HDL peak densities between the two experimental groups (1.097 g/ml FLX group and 1.095 g/ml SUN group, p = 0.028). The plasma fatty acid results indicate that Monk parrots can readily convert α-linolenic acid to the long-chain omega-3 derivatives including docosahexaenoic acid and reduce 20:4n-6 accumulation in plasma phospholipids. The reason for a shift in the HDL peak density is unknown at this time.

  7. On activity space of monks in the Song Dynasty from the angel of Yi Jian Zhi%从《夷坚志》看宋代僧人活动空间

    Institute of Scientific and Technical Information of China (English)

    王翠

    2012-01-01

    Yi Jian Zhi written by Hong Mai in the Southern Song Dynasty described the social behaviors from the late Northern Song Dynasty to the early Southern Song Dynasty, among which there were a lot about monks. In the book, the activity space of monks was wide, their social networking was active, and their social activities were various. People of that age held different opinions on it. This paper studies the relevant records about this book in order to help people have a better understanding of the society of the Northern and Southern Song Dynasties, especially the whole image of the monk group of that period.%南宋洪迈所作《夷坚志》记述了北宋末年至南宋初年的社会百态,其中关于僧人的记述尤为丰富,书中描述的僧人活动空间非常广泛,社交比较活跃,从事活动丰富多样,对此时人亦有不同议论。通过对该书相关记述的梳理,以更好地了解两宋时期的社会状态尤其是该时期僧人群体的形象。

  8. Beta testing of MTI seal codes

    Science.gov (United States)

    Scharrer, Joseph

    1994-01-01

    An evaluation of MTI seal codes is made by comparing cylindrical air and water seals. Results are presented in viewgraph format and show that: ICYL and GCYL geometry variations are desirable; load and direct stiffness calculations are good; damping and cross-coupled stiffness predictions are poor; added mass coefficients should be calculated; and variation in inlet tangential velocity is critical to design.

  9. Phocine Distemper in German Seals, 2002

    OpenAIRE

    Müller, Gundi; Wohlsein, Peter; Beineke, Andreas; Haas, Ludwig; Greiser-Wilke, Irene; Siebert, Ursula; Fonfara, Sonja; Harder, Timm; Stede, Michael; Achim D Gruber; Baumgärtner, Wolfgang.

    2004-01-01

    Approximately 21,700 seals died during a morbillivirus epidemic in northwestern Europe in 2002. Phocine distemper virus 1 was isolated from seals in German waters. The sequence of the P gene showed 97% identity with the Dutch virus isolated in 1988. There was 100% identity with the Dutch isolate from 2002 and a single nucleotide mismatch with the Danish isolate.

  10. Channeling Sealing Technique with QN-70 Agent

    Institute of Scientific and Technical Information of China (English)

    Zhang Xiuyun

    1997-01-01

    @@ Sealing channels with QN-70 agent is a new technique developed by Institute of Oil Production Technology of Daqing Petroleum Administration, suitable to sealing channels between layers and high water-cut intervals of oil wells, as well as leakage zones.

  11. Fuel cell separator with compressible sealing flanges

    Science.gov (United States)

    Mientek, Anthony P.

    1985-04-30

    A separator for separating adjacent fuel cells in a stack of such cells includes a flat, rectangular, gas-impermeable plate disposed between adjacent cells and having two opposite side margins thereof folded back over one side of the plate to form two first seal flanges and having the other side margins thereof folded back over the opposite side of the plate to form two second seal flanges, each of the seal flanges cooperating with the plate to define a channel in which is disposed a resiliently compressible stack of thin metal sheets. The two first seal flanges cooperate with the electrolyte matrix of one of the cells to form a gas-impermeable seal between an electrode of the one cell and one of two reactant gas manifolds. The second seal flanges cooperate with the electrolyte matrix of the other cell for forming a gas-impermeable seal between an electrode of the other cell and the other of the two reactant gas manifolds. The seal flanges cooperate with the associated compressible stacks of sheets for maintaining a spacing between the plate and the electrolyte matrices while accommodating variation of that spacing.

  12. Space Environment Effects on Silicone Seal Materials

    Science.gov (United States)

    deGroh, Henry C., III; Daniels, Christopher C.; Dever, Joyce A.; Miller, Sharon K.; Waters, Deborah L.; Finkbeiner, Joshua R.; Dunlap, Patrick H.; Steinetz, Bruce M.

    2010-01-01

    A docking system is being developed by the NASA to support future space missions. It is expected to use redundant elastomer seals to help contain cabin air during dockings between two spacecraft. The sealing surfaces are exposed to the space environment when vehicles are not docked. In space, the seals will be exposed to temperatures between 125 to -75 C, vacuum, atomic oxygen, particle and ultraviolet radiation, and micrometeoroid and orbital debris (MMOD). Silicone rubber is the only class of space flight-qualified elastomeric seal material that functions across the expected temperature range. NASA Glenn has tested three silicone elastomers for such seal applications: two provided by Parker (S0899-50 and S0383-70) and one from Esterline (ELA-SA-401). The effects of atomic oxygen (AO), UV and electron particle radiation, and vacuum on the properties of these three elastomers were examined. Critical seal properties such as leakage, adhesion, and compression set were measured before and after simulated space exposures. The S0899-50 silicone was determined to be inadequate for extended space seal applications due to high adhesion and intolerance to UV, but both S0383-70 and ELA-SA-401 seals were adequate.

  13. 14 CFR 187.7 - Copies; seal.

    Science.gov (United States)

    2010-01-01

    ... H of 49 CFR part 7. ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Copies; seal. 187.7 Section 187.7... REGULATIONS FEES § 187.7 Copies; seal. The fees for furnishing photostatic or similar copies of documents...

  14. Cask systems development program seal technology

    Energy Technology Data Exchange (ETDEWEB)

    Madsen, M.M.; Edwards, K.R.; Humphreys, D.L.

    1991-01-01

    General design or test performance requirements for radioactive materials (RAM) packages are specified in Title 10 of the US Code of Federal Regulations Part 71 (10 CFR 71). Seals that provide the containment system interface between the packaging body and the closure must function in both high- and low-temperature environments under dynamic and static conditions. Experiments were performed to characterize the performance of several seal materials at low temperatures. Helium leak tests on face seals were used to compare the materials. Materials tested include butyl, neoprene, ethylene propylene, fuorosilicone, silicone, Eypel, Kalrez, Teflon, fluorocarbon, and Teflon/silicone composites. Results show that the seal materials tested, with the exception of silicone S613-60, are not leak tight at manufacturer low-temperature ratings. This paper documents the initial series of experiments developed to characterize the performance of several static seals under conditions representative of RAM transport container environments. Helium leak rates of face seals were measured at low and ambient temperatures to compare seal materials. As scaling laws have not been developed for seals, the leakage rates measured in this program are intended to be used in a qualitative rather than quantitative manner. 5 refs., 7 figs., 2 tabs.

  15. Environmental and customer-driven seal requirements

    Science.gov (United States)

    Hendricks, Robert C.

    1994-07-01

    Public awareness of environmental hazards, well-publicized effects of hazardous leakages (Three Mile Island, Challenger), and a general concern for planet earth have precipitated emission limits that drive the design requirements for seals applications. Types of seals, barrier fluids, and the necessity of thin lubricating films and stable turbomachine operation to minimize leakage and material losses generated by rubbing contact are discussed.

  16. Properties of Sealing Materials in Groundwater Wells

    DEFF Research Database (Denmark)

    Köser, Claus

    pellets as sealing material in groundwater wells. The way and the pattern, in which bentonite pellets are deposited, have been shown to have an effect on the swelling pressure of the bentonite seal. During the transport phase of pellets from the terrain to a given sedimentation depth, a sorting process......) into densities for clay/water systems has been developed. This method has successfully been used to evaluate e.g., macroporosity, homogenization of the bentonite seal during the hydration of water, hydraulic conductivity and the creation of channels in the bentonite seals. Based on the results obtained...... in this Ph.D. thesis, a number of recommendations has been offered; i) a change regarding the production of pellets and ii) how sealing material must be treated in the actual construction of groundwater wells....

  17. Film riding seal assembly for turbomachinery

    Energy Technology Data Exchange (ETDEWEB)

    Bidkar, Rahul Anil; Giametta, Andrew Paul; Gibson, Nathan Evan McCurdy; Cleveland, Nicolas Joseph

    2016-06-07

    An aerodynamic seal assembly for a rotary machine includes multiple sealing segments disposed circumferentially intermediate to a stationary housing and a rotor. Each of the segments includes a shoe plate with a forward load-bearing section and an aft load-bearing section configured to generate an aerodynamic force between the shoe plate and the rotor. The shoe plate includes at least one labyrinth teeth facing the rotor and positioned between the forward load-bearing section and the aft load-bearing section. The sealing segment also includes at least one spring connected to a pedestal located about midway of an axial length of the shoe plate and to a stator interface element. Further, the sealing segment includes a rigid segmented secondary seal attached to the stator interface element at one first end and in contact with the pedestal of the shoe plate at one second end.

  18. Bioaccumulation of radiocaesium in Arctic seals

    Energy Technology Data Exchange (ETDEWEB)

    Carroll, JoLynn; Wolkers, Hans; Andersen, Magnus; Rissanen, Kristina

    2002-12-01

    Seals are high trophic level feeders that bioaccumulate many contaminants to a greater degree than most lower trophic level organisms. Their trophic status in the marine food web and wide-spread distribution make seals useful sentinels of arctic environmental change. The purpose of this investigation is to document the levels and bioaccumulation potential of radiocaesium in high latitude seal species for which data have not previously been available. The study was carried out on harp, ringed, and bearded seals caught north of the island archipelago of Svalbard (82 deg. N) in 1999. The results are then compared with previous studies in order to elucidate factors responsible for bioaccumulation in Arctic seals. Concentrations of {sup 137}Cs were determined in muscle, liver and kidney samples from a total of 10 juvenile and one adult seal. The mean concentration in muscle samples for all animals was 0.23{+-}0.045 Bq/kg f.w. {sup 137}Cs concentrations in both liver and kidney samples were near detection limits ({approx}0.2 Bq/kg f.w.). The results are consistent with previous studies indicating low levels of radiocaesium in Arctic seals in response to a long term trend of decreasing levels of {sup 137}Cs in the Barents Sea region. Bioconcentration factors (BCFs) estimated for seals from NE Svalbard are low, ranging from 34 to 130. Comparing these values with reported BCFs for Greenland seals from other sectors of the European Arctic, we suggest that the combination of physiological and ecological factors on radiocaesium bioaccumulation is comparable among different Arctic seal populations. The application of this work to Arctic monitoring and assessment programs is discussed.

  19. Does the seal licensing system in Scotland have a negative impact on seal welfare?

    Directory of Open Access Journals (Sweden)

    Laetitia Nunny

    2016-08-01

    Full Text Available This study examined the licensing system that permits seal shooting in Scotland, which was established under Part 6 Conservation of Seals of the Marine (Scotland Act 2010. Four approaches were used: data were collated and analyzed from both the Scottish Government and Scottish Marine Animal Stranding Scheme; a survey was sent to current license holders and informal interviews were conducted with key stakeholder types. Between February 2011 and the end of October 2015, 1229 gray seals and 275 common seals were reported shot under license to the Scottish Government. The numbers of seals reported as shot has reduced year-on-year since the licensing system was put in place. While some license holders, notably fish farms, were using some non-lethal forms of deterrent to reduce seal-related damage, these were often used alongside seal shooting. Of the seals reported as shot to the Scottish Government, only a small percentage were also reported to the Scottish Marine Animal Stranding Scheme, despite this being a licensing requirement. Only 2.3% of the shot gray seals and 4.5% of the shot common seals were necropsied. There is evidence from these necropsies that some seals had not died instantly or had not been shot in the manner recommended by the Scottish Seal Management Code of Practice. These preliminary results show that more carcasses need to be recovered and necropsied if the welfare implications of current seal shooting practice are to be properly assessed. The current legislation does not specify closed seasons to protect breeding seals and thirty-five per cent of necropsied seals were pregnant gray seals. Seals have also been shot during their lactation periods when pups are dependent on their mothers. This raises significant welfare concerns. The re-introduction of closed seasons specific to each species of seal is recommended along with greater effort to deploy non-lethal methods. Independent assessment of the number of seals being killed

  20. Sealed ion accelerator tubes (survey)

    International Nuclear Information System (INIS)

    The first publications on developing commercial models of small-scale sealed accelerator tubes in which neutrons are generated appeared in the foreign press in 1954 to 1957; they were very brief and were advertising-oriented. The tubes were designed for neutron logging of oil wells instead of ampule neutron sources (Po + Be, Ra + Be). Later, instruments of this type began to be called neutron tubes from the resulting neutron radiation that they gave off. In Soviet Union a neutron tube was developed in 1958 in connection with the development of the pulsed neutron-neutron method of studying the geological profile of oil wells. At that time the tube developed was intended, in the view of its inventors, to replace standard isotope sources with constant neutron yield. A fairly detailed survey of neutron tubes was made in the studies. 8 refs., 8 figs

  1. Study on sealing of boreholes

    International Nuclear Information System (INIS)

    A bibliographical research on the problem of the backfilling and sealing of boreholes, shafts and tunnels for radioactive waste disposal has been carried out. Various materials - both natural and artificial - like clay, industrial cement, polymer concrete, geothermical and magnesium cement have been examined. Their main physico-chemical and durability characteristics have been examined. The problem of the interaction between the sealing and the geological environment has been also dealt. The final subject discussed in the bibliography is the damage caused to the host formation by the excavation of shafts and tunnels. The laboratory tests have been performed on a natural clay and other types of material (cement grout, cement grout with expansive additive, cement mortar and remoulded clay) which have been used as plug materials. The main conclusions obtained from the tests are the following: - The permeability of the cement is lower than the permeability of the clay; - no adhesion was observed between clay and cement mortar, with or without expansive additive, when cured under different ambient conditions, but without any application of load; - When curing took place under load, good adhesion was observed between the clay and the cement mortar; - The flow of water in a specimen consisting of a clay core surrounded by remoulded clay is larger than in the natural clay. These results seem to be caused by the different permeabilities of the remoulded and undisturbed clay and not to depend on flow at the contact between the two materials. A remote instrumentation package for the in situ evaluation of the performance of a plug, has been developed. In order to get rid of the uncertainty associated with the infiltration of the cables through the plug a wireless data transmission system, based on acoustic waves, has been developed

  2. Ocean climate and seal condition

    Directory of Open Access Journals (Sweden)

    Crocker Daniel E

    2005-03-01

    Full Text Available Abstract Background The condition of many marine mammals varies with fluctuations in productivity and food supply in the ocean basin where they forage. Prey is impacted by physical environmental variables such as cyclic warming trends. The weaning weight of northern elephant seal pups, Mirounga angustirostris, being closely linked to maternal condition, indirectly reflects prey availability and foraging success of pregnant females in deep waters of the northeastern Pacific. The aim of this study was to examine the effect of ocean climate on foraging success in this deep-diving marine mammal over the course of three decades, using cohort weaning weight as the principal metric of successful resource accrual. Results The mean annual weaning weight of pups declined from 1975 to the late 1990s, a period characterized by a large-scale, basin-wide warm decadal regime that included multiple strong or long-duration El Niños; and increased with a return to a cool decadal regime from about 1999 to 2004. Increased foraging effort and decreased mass gain of adult females, indicative of reduced foraging success and nutritional stress, were associated with high ocean temperatures. Conclusion Despite ranging widely and foraging deeply in cold waters beyond coastal thermoclines in the northeastern Pacific, elephant seals are impacted significantly by ocean thermal dynamics. Ocean warming redistributes prey decreasing foraging success of females, which in turn leads to lower weaning mass of pups. Annual fluctuations in weaning mass, in turn, reflect the foraging success of females during the year prior to giving birth and signals changes in ocean temperature cycles.

  3. Caribbean Coral Reef, Seagrass and Mangrove Sites (CARICOMP), (NODC Accession 0000501)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Caribbean Coastal Marine Productivity (CARICOMP) Program is a Caribbean-wide research and monitoring network of 27 marine laboratories, parks, and reserves in...

  4. Surveillance of avian influenza in the Caribbean through the Caribbean Animal Health Network: surveillance tools and epidemiologic studies.

    Science.gov (United States)

    Lefrançois, T; Hendrikx, P; Ehrhardt, N; Millien, M; Gomez, L; Gouyet, L; Gaidet, N; Gerbier, G; Vachiéry, N; Petitclerc, F; Carasco-Lacombe, C; Pinarello, V; Ahoussou, S; Levesque, A; Gongora, H V; Trotman, M

    2010-03-01

    The Caribbean region is considered to be at risk for avian influenza (AI) due to a large backyard poultry system, an important commercial poultry production system, the presence of migratory birds, and disparities in the surveillance systems. The Caribbean Animal Health Network (CaribVET) has developed tools to implement AI surveillance in the region with the goals to have 1) a regionally harmonized surveillance protocol and specific web pages for AI surveillance on www.caribvet.net, and 2) an active and passive surveillance for AI in domestic and wild birds. A diagnostic network for the Caribbean, including technology transfer and AI virus molecular diagnostic capability in Guadeloupe (real-time reverse transcription-polymerase chain reaction for the AI virus matrix gene), was developed. Between 2006 and 2009, 627 samples from four Caribbean countries were tested for three circumstances: importation purposes, following a clinical suspicion of AI, or through an active survey of wild birds (mainly waders) during the southward and northward migration periods in Guadeloupe. None of the samples tested were positive, suggesting a limited role of these species in the AI virus ecology in the Caribbean. Following low pathogenic H5N2 outbreaks in the Dominican Republic in 2007, a questionnaire was developed to collect data for a risk analysis of AI spread in the region through fighting cocks. The infection pathway of the Martinique commercial poultry sector by AI, through introduction of infected cocks, was designed, and recommendations were provided to the Caribbean Veterinary Services to improve cock movement control and biosecurity measures. The CaribVET and its organization allowed interaction between diagnostic and surveillance tools on the one hand and epidemiologic studies on the other, both of them developed in congruence with regional strategies. Together, these CaribVET activities contribute to strengthening surveillance of avian influenza virus (AIV) in the

  5. Tsunamis from Tectonic Sources along Caribbean Plate Boundaries

    Science.gov (United States)

    Lopez, A. M.; Chacon, S.; Zamora, N.; Audemard, F. A.; Dondin, F. J. Y.; Clouard, V.; Løvholt, F.; Harbitz, C. B.; Vanacore, E. A.; Huerfano Moreno, V. A.

    2015-12-01

    The Working Group 2 (WG2) of the Intergovernmental Coordination Group for the Tsunami and Other Coastal Hazards Warning System for the Caribbean and Adjacent Regions (ICG/CARIBE-EWS) in charge of Tsunami Hazards Assessment, has generated a list of tsunami sources for the Caribbean region. Simulating these worst-case, most credible scenarios would provide an estimate of the resulting effects on coastal areas within the Caribbean. In the past few years, several publications have addressed this issue resulting in a collection of potential tsunami sources and scenarios. These publications come from a wide variety of sources; from government agencies to academic institutions. Although these provide the scientific community with a list of sources and scenarios, it was the interest of the WG2 to evaluate what has been proposed and develop a comprehensive list of sources, therefore leaving aside proposed scenarios. The seismo-tectonics experts of the Caribbean within the WG2 members were tasked to evaluate comprehensively which published sources are credible, worst-cases, and consider other sources that have been omitted from available reports. Among these published sources are the GEM Faulted Earth Subduction Characterization Project, and the LANTEX/Caribe Wave annual exercise publications (2009-2015). Caribbean tectonic features capable of generating tsunamis from seismic dislocation are located along the Northeastern Caribbean, the Lesser Antilles Trench, and the Panamá and Southern Caribbean Deformed Belts. The proposed sources have been evaluated based on historical and instrumental seismicity as well as geological and geophysical studies. This paper presents the sources and their justification as most-probable tsunami sources based on the context of crustal deformation due to Caribbean plate interacting with neighboring North and South America plates. Simulations of these sources is part of a subsequent phase in which effects of these tectonically induced tsunamis

  6. Energy review 2003 Latin American and Caribbean

    International Nuclear Information System (INIS)

    To develop this document we have placed our eagerness to present an analysis of the Energy Sector of Latin American and Caribbean, it contains information about the current energy situation of each of our member countries, regional data, as well as economic and social indicators corrected through historical series. The 2003 energy report, presents an innovative structure for analysis that allows the reader to easily find general information on the energy sectors of the 26th OLADE member countries. In addition, the written publications present data from Algeria, an extra regional participant country of the Organization. With the objective of enriching the statistical value that the document have presented since initial editions, this document contains the participation of our technical coordinators in the each of our specialized areas of our organization: energy policy, hydrocarbons, electricity, statistical information, renewable energy and environment. It is likely to emphasize in this occasion, for the first time the energy report is spread into the immediate year subsequent to the one of reference, as it was obtained thanks to the effort of our specialists and the cooperation of our countries members. The modern world presents us with constant changes and challenges for the security of supply that sets dynamic integration within the strategic areas. In this sense, we expect that this document will be a useful tool to face the challenges of the energy sector of our region. (The author)

  7. The Caribbean and the Wild Coast

    Directory of Open Access Journals (Sweden)

    Marian Goslinga

    1992-07-01

    Full Text Available [First paragraph] Suriname: a bibliography, 1980-1989. Jo DERKX & IRENE ROLFES. Leiden, the Netherlands: Department of Caribbean Studies, KITLV/Royal Institute of Linguistics and Anthropology, 1990. x + 297 pp. (Paper NLG 25.00 La Caraïbe politique et internationale: bibliographie politologique avec références économiques et socio-culturelles. MICHEL L. MARTIN. Paris: L'Harmattan, 1990. xvii + 287 pp. Suriname. ROSEMARIJN HOEFTE. Oxford and Santa Barbara CA: Clio Press, 1990. xxx + 229 pp. (Cloth US$ 45.00 Although in North American academie circles interest in Suriname (or the Wild Coast, as the area was originally called has always been marginal, the same cannot be said for the Dutch, for whom the former colony continues to hold an enduring fascination. Not only have the Dutch studied the country's historical beginnings assiduously, but Suriname's controversial relationship with the former mother country assures it a definite place in contemporary social and political thought.

  8. Baseball and society in the Caribbean

    Directory of Open Access Journals (Sweden)

    Andrew Zimbalist

    1994-01-01

    Full Text Available [First paragraph] The Tropic of Baseball: Baseball in the Dominican Republic. Rob Ruck. Westport CT: Meckler, 1991. x + 205 pp. (Cloth n.p. Trading with the Enemy: A Yankee Travels Through Castro's Cuba. Tom Miller. New York: Atheneum, 1992. x + 338 pp. (Cloth US$ 24.00 Read Bart Giamatti's Take Time for Paradise (1989 or any of the other grand old game sentimentalists and you'11 discover that baseball somehow perfectly reflects the temperament of U.S. culture. This match, in turn, accounts for basebali's enduring and penetrating popularity in the United States. Read Ruck and Miller and you'11 learn that baseball is more popular and culturally dominant in the Dominican Republic and Cuba than it is to the north. The suppressed syllogism affirms that U.S. and Caribbean cultures hold intimate similarities. If that is true, this Caribbeanist has been out to lunch; then again, no one ever accused economists of having acute cultural sensibilities.

  9. Tamper-indicating quantum optical seals

    Energy Technology Data Exchange (ETDEWEB)

    Humble, Travis S [ORNL; Williams, Brian P [ORNL

    2015-01-01

    Confidence in the means for identifying when tampering occurs is critical for containment and surveillance technologies. Fiber-optic seals have proven especially useful for actively surveying large areas or inventories due to the extended transmission range and flexible layout of fiber. However, it is reasonable to suspect that an intruder could tamper with a fiber-optic sensor by accurately replicating the light transmitted through the fiber. In this contribution, we demonstrate a novel approach to using fiber-optic seals for safeguarding large-scale inventories with increased confidence in the state of the seal. Our approach is based on the use of quantum mechanical phenomena to offer unprecedented surety in the authentication of the seal state. In particular, we show how quantum entangled photons can be used to monitor the integrity of a fiber-optic cable - the entangled photons serve as active sensing elements whose non-local correlations indicate normal seal operation. Moreover, we prove using the quantum no-cloning theorem that attacks against the quantum seal necessarily disturb its state and that these disturbances are immediately detected. Our quantum approach to seal authentication is based on physical principles alone and does not require the use of secret or proprietary information to ensure proper operation. We demonstrate an implementation of the quantum seal using a pair of entangled photons and we summarize our experimental results including the probability of detecting intrusions and the overall stability of the system design. We conclude by discussing the use of both free-space and fiber-based quantum seals for surveying large areas and inventories.

  10. An Historical and Contemporary Overview of Gendered Caribbean Relations

    Directory of Open Access Journals (Sweden)

    Dr. Sharla Blank

    2013-06-01

    Full Text Available This paper presents a broad overview of historical and contemporary gender and social class relations in the British, French, and Spanish Caribbean islands focusing primarily on Afro-Caribbean people. It begins with a discussion of gendered relations during slavery and then investigates gender roles post emancipation. Next, multiple aspects of contemporary West Indian family life are addressed including the prevalence of matrifocal households and child shifting. The important roles played by Caribbean female household heads are discussed in the context of patriarchy. Highlights include the significance of the maternal role over the marital, socializing youth, particular negative expectations each sex holds of the other, customary sexual behavior, as well as common relationship types. Varying aspects of women’s behavior according to social class is touched upon followed by a brief synopsis of the status of Caribbean women on measures of educational and work force participation rates; finally, a summary of the dearth of active women’s movements in the region is addressed. The paper provides an introduction to the intimate and working lives of Caribbean women and men.

  11. Prognosing the durability of polymer sealings

    OpenAIRE

    W. Okularczyk; Kwiatkowski, D.

    2006-01-01

    Purpose: The paper describes the phenomena connected with the sealing for water hydraulic systems.Design/methodology/approach: For the durability tests two types of sealings, made of three polymeric materials recommended for use in water hydraulics systems have been used. In all investigation arrangements the same guide elements have been used. The tests have been performed maintaining water pressure on the sealing at a level of p = 8±1 MPa and the average speed of the piston rod of v ≈ 0.35 ...

  12. The status of grey seals in Britain

    OpenAIRE

    Duck, C.D.; THOMPSON, D

    2013-01-01

    Grey seal pup production in Scotland was estimated through annual aerial surveys of the main grey seal breeding colonies. Between 3 and 7 counts of pups were obtained for each colony at intervals through the course of the breeding season. Pup production for individual colonies was estimated from the series of counts using a maximum likelihood model. At 3 colonies, 2 in England, annual pup production was estimated using ground counts. Between the early 1960s and the early 1990s, grey seal pup ...

  13. Vacuum-sealed casting process under pressure

    Institute of Scientific and Technical Information of China (English)

    LI Chen-xi; GUO Tai-ming; WU Chun-jing; WANG Hong

    2006-01-01

    A new casting method, the vacuum-sealed mold casting under pressure, has been developed, and thin wall iron castings with high precision and smooth surface have been produced successfully with this casting method. The experimental results show that the liquid iron has a very excellent filling ability because a high negative pressure is formed in the mold cavity during filling process. The vacuum-sealed mold under pressure has very high compressive strength greater than 650 kPa, which is 3-4 times as high as that of the molds produced by high-pressure molding process or vacuum-sealed molding process.

  14. Floating air riding seal for a turbine

    Science.gov (United States)

    Ebert, Todd A

    2016-08-16

    A floating air riding seal for a gas turbine engine with a rotor and a stator, an annular piston chamber with an axial moveable annular piston assembly within the annular piston chamber formed in the stator, an annular cavity formed on the annular piston assembly that faces a seal surface on the rotor, where the axial moveable annular piston includes an inlet scoop on a side opposite to the annular cavity that scoops up the swirling cooling air and directs the cooling air to the annular cavity to form an air cushion with the seal surface of the rotor.

  15. Spotted Seals, Phoca largha, in Alaska

    OpenAIRE

    Rugh, David J.; Shelden, Kim E. W.; Withrow, David E.

    1997-01-01

    The worldwide literature on management of spotted seals, Phoca largha, was reviewed and updated, and aerial surveys weref lown in 1992 and 1993 to determine the species' distribution and abundance in U.S. waters. In April, spotted seals were found only in the Bering Sea ice front. In June, they were seen along deteriorating ice floes and fast ice in Norton Sound. Surveys along most of Alaska's western coast in August and September found over 2,500 spotted seals in Kuskokwim Bay and concentrat...

  16. Compliant Glass Seals for SOFC Stacks

    Energy Technology Data Exchange (ETDEWEB)

    Chou, Y. S.; Choi, Jung-Pyung; Xu, Wei; Stephens, Elizabeth V.; Koeppel, Brian J.; Stevenson, Jeffry W.; Lara-Curzio, Edgar

    2014-04-01

    This report summarizes results from experimental and modeling studies performed by participants in the Solid-State Energy Conversion Alliance (SECA) Core Technology Program, which indicate that compliant glass-based seals offer a number of potential advantages over conventional seals based on de-vitrifying glasses, including reduced stresses during stack operation and thermal cycling, and the ability to heal micro-damage induced during thermal cycling. The properties and composition of glasses developed and/or investigated in these studies are reported, along with results from long-term (up to 5,800h) evaluations of seals based on a compliant glass containing ceramic particles or ceramic fibers.

  17. Infiltrating/sealing proximal caries lesions

    DEFF Research Database (Denmark)

    Martignon, S; Ekstrand, K R; Gomez, J;

    2012-01-01

    This randomized split-mouth controlled clinical trial aimed at assessing the therapeutic effects of infiltration vs. sealing for controlling caries progression on proximal surfaces. Out of 90 adult students/patients assessed at university clinics and agreeing to participate, 39, each with 3...... differences in lesion progression between infiltration and placebo (P = 0.0012) and between sealing and placebo (P = 0.0269). The study showed that infiltration and sealing are significantly better than placebo treatment for controlling caries progression on proximal lesions. No significant difference...

  18. Observations on the whale shark (Rhincodon typus) in the Dutch Caribbean

    NARCIS (Netherlands)

    Debrot, A.O.; Leon, R.; Esteban, N.; Meesters, H.W.G.

    2013-01-01

    Records of whale sharks in the Caribbean are relatively sparse. Here we document 24 records of whale sharks (Rhincodon typus Smith 1882) for the Dutch Caribbean, four for the windward islands of Saba, St. Eustatius and St. Maarten, and twenty for the southern Caribbean leeward islands of Aruba, Cura

  19. 3 CFR 8390 - Proclamation 8390 of June 2, 2009. National Caribbean-American Heritage Month, 2009

    Science.gov (United States)

    2010-01-01

    ... Caribbean-American Heritage Month, 2009 8390 Proclamation 8390 Presidential Documents Proclamations Proclamation 8390 of June 2, 2009 Proc. 8390 National Caribbean-American Heritage Month, 2009By the President... Caribbean-American Heritage Month. I urge all Americans to commemorate this month by learning more about...

  20. Gendered Perceptions of Schooling: Classroom Dynamics and Inequalities within Four Caribbean Secondary Schools

    Science.gov (United States)

    Younger, Mike; Cobbett, Mary

    2014-01-01

    This paper sets out to interrogate the reality of secondary schooling in one part of the Caribbean, through a case study exploration of the "gender regimes" of four secondary schools in the small Eastern Caribbean nation state of Antigua and Barbuda. In Antigua, as in the Caribbean region more broadly, the focus of attention has been on…

  1. Effect of bar sealing parameters on OPP/MCPP heat seal strength

    Directory of Open Access Journals (Sweden)

    2007-11-01

    Full Text Available The effect of bar sealing parameters on the heat seal strength of oriented polypropylene (OPP/metallic cast polypropylene (MCPP laminate film was investigated. Based on the results obtained from the parametric study, a bar sealing process window was developed. All points drop within the process window are combinations of platen temperature and dwell time that produce acceptable heat seal. Optimum combinations are indicated by the lower border of the window. The plateau initiation temperature, Tpi of OPP/MCPP laminate film used in the present study occurred before the final melting temperature, Tmf of the sealant material. The highest achievable heat seal strength was at the plateau region, and the corresponding failure modes were delaminating, tearing or combine failure modes (delaminating and tearing. Minimum pressure level of 1.25 bars is necessary to bring the laminate interface into intimate contact in order to effect sealing.

  2. Aerial surveys of seals at Rødsand seal sanctuary and adjacent haul-out sites

    DEFF Research Database (Denmark)

    Teilmann, J.; Dietz, R.; Edren, Susi M.C.;

    This report describes the preliminary results of aerial surveys at Rødsand seal sanctuary, southeast Denmark and adjacent seal haul-out sites in southwestern Baltic. The work was carried out in connection with studies of potential effects of the Nysted offshore wind farm. Rødsand seal sanctuary...... is a part of seal management area 4, and the area is believed to hold a more or less closed population with little exchange to other areas. Although the harbour seal is relatively stationary there may be movements between the haul-out sites in the area. A possible reaction to disturbance from...... the construction and operation of the wind farm may be that the seals use other haul-out sites to a higher extend....

  3. Caribbean Oceans: Utilizing NASA Earth Observations to Detect, Monitor, and Respond to Unprecedented Levels of Sargassum in the Caribbean Sea

    Science.gov (United States)

    Ped, Jordan; Scaduto, Erica; Accorsi, Emma; Torres-Perez, Juan (Editor)

    2016-01-01

    In 2011 and 2015, the nations of the Caribbean Sea were overwhelmed by the unprecedented quantity of Sargassum that washed ashore. This issue prompted international discussion to better understand the origins, distribution, and movement of Sargassum, a free-floating brown macro alga with ecological, environmental, and commercial importance. In the open ocean, Sargassum mats serve a vital ecological function. However, when large quantities appear onshore without warning, Sargassum threatens local tourist industries and nearshore ecosystems within the Caribbean. As part of the international response, this project investigated the proliferation of this macro alga within the Caribbean Sea from 2003-2015, and used NASA Earth observations to detect and model Sargassum growth across the region. The Caribbean Oceans team calculated the Floating Algal Index (FAI) using Terra Moderate Resolution Imaging Spectroradiometer (MODIS) data, and compared the FAI to various oceanic variables to determine the ideal pelagic environment for Sargassum growth. The project also examined the annual spread of Sargassum throughout the region by using Earth Trends Modeler (ETM) in Clark Labs' TerrSet software. As part of the international effort to better understand the life cycle of Sargassum in the Caribbean, the results of this project will help local economies promote sustainable management practices in the region.

  4. Mesoscale Deformational Features Near Outcrop Analogs of a Reservoir-Seal Interface: Implications for Seal Failure

    OpenAIRE

    Flores, Santiago L.

    2014-01-01

    The interface between a reservoir and a caprock is generally considered a flow boundary where capillary trapping at the base of the caprock and low permeability of the seal resists the upward migration of fluids. Joints and faults may act as mechanisms for seal bypass, allowing fluids to escape from the reservoir. The injection and storage of carbon dioxide (CO2) in subsurface porous sandstone with effective top seals is a proposed method for reducing the amount of anthropogenic CO2 in the...

  5. 49 CFR 803.3 - Authority to affix Seal.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 7 2010-10-01 2010-10-01 false Authority to affix Seal. 803.3 Section 803.3 Transportation Other Regulations Relating to Transportation (Continued) NATIONAL TRANSPORTATION SAFETY BOARD OFFICIAL SEAL § 803.3 Authority to affix Seal. (a) The Seal shall be in the custody and control of...

  6. 34 CFR 3.3 - Authority to affix seal.

    Science.gov (United States)

    2010-07-01

    ... 34 Education 1 2010-07-01 2010-07-01 false Authority to affix seal. 3.3 Section 3.3 Education Office of the Secretary, Department of Education OFFICIAL SEAL § 3.3 Authority to affix seal. The Secretary and the Secretary's designees are authorized to affix the Official Seal, replicas,...

  7. 4 CFR 202.2 - Authority to affix seal.

    Science.gov (United States)

    2010-01-01

    ... 4 Accounts 1 2010-01-01 2010-01-01 false Authority to affix seal. 202.2 Section 202.2 Accounts RECOVERY ACCOUNTABILITY AND TRANSPARENCY BOARD OFFICIAL SEAL § 202.2 Authority to affix seal. (a) The following officials of the Board are authorized to affix the official seal (including reproductions)...

  8. 28 CFR 803.2 - Authority to affix seal.

    Science.gov (United States)

    2010-07-01

    ... 28 Judicial Administration 2 2010-07-01 2010-07-01 false Authority to affix seal. 803.2 Section... COLUMBIA AGENCY SEAL § 803.2 Authority to affix seal. The Director of CSOSA or PSA (as appropriate) and the Director's designees are authorized to affix the Agency seal (including replicas and reproductions)...

  9. 50 CFR 216.15 - Depleted species.

    Science.gov (United States)

    2010-10-01

    ... Assistant Administrator as depleted under the provisions of the MMPA. (a) Hawaiian monk seal (Monachus schauinslandi). (b) Bowhead whale (Balaena mysticetus). (c) North Pacific fur seal (Callorhinus...

  10. Epoxy resins used to seal brachytherapy seed

    International Nuclear Information System (INIS)

    Prostate cancer treatment with brachytherapy is recommended for patients with cancer at an early stage. In this treatment, small radioactive seeds are implanted directly in the prostate gland. These seeds are composed at least of one radionuclide carrier and an X-ray marker enclosed within a metallic tube usually sealed by laser process. This process is expensive and, furthermore, it can provoke a partial volatilization of the radionuclide and change the isotropy in dose distribution around the seed. In this paper, we present a new sealing process using epoxy resin. Three kinds of resins were utilized and characterized by scanning electron microscopy (SEM), energy dispersive X ray (EDS) and by differential scanning calorimetry (DSC) after immersion in simulated body fluid (SBF) and in sodium iodine solution (NaI). The sealing process showed excellent potential to replace the sealing laser usually employed. (author)

  11. PBX-M vacuum vessel seal upgrade

    Energy Technology Data Exchange (ETDEWEB)

    Kozub, T.; Barnes, G.; Chrzanowski, J. [Princeton Plasma Physics Lab., NJ (United States)] [and others

    1995-12-31

    This paper addresses the project to restore and improve the sixteen year old elastomer seals on the PBX-M vacuum vessel. This work was performed to eliminate age degradation failures and to enhance future performance and reliability.

  12. Temporary fire sealing of penetrations on TFTR

    Energy Technology Data Exchange (ETDEWEB)

    Hondorp, H.L.

    1981-02-01

    The radiation shielding provided for TFTR for D-D and D-T operation will be penetrated by numerous electrical and mechanical services. Eventually, these penetrations will have to be sealed to provide the required fire resistance, tritium sealability, pressure integrity and radiation attenuation. For the initial hydrogen operation, however, fire sealing of the penetrations in the walls and floor is the primary concern. This report provides a discussion of the required and desirable properties of a temporary seal which can be used to seal these penetrations for the hydrogen operation and then subsequently be removed and replaced as required for the D-D and D-T operations. Several candidate designs are discussed and evaluated and recommendations are made for specific applications.

  13. Temporary fire sealing of penetrations on TFTR

    International Nuclear Information System (INIS)

    The radiation shielding provided for TFTR for D-D and D-T operation will be penetrated by numerous electrical and mechanical services. Eventually, these penetrations will have to be sealed to provide the required fire resistance, tritium sealability, pressure integrity and radiation attenuation. For the initial hydrogen operation, however, fire sealing of the penetrations in the walls and floor is the primary concern. This report provides a discussion of the required and desirable properties of a temporary seal which can be used to seal these penetrations for the hydrogen operation and then subsequently be removed and replaced as required for the D-D and D-T operations. Several candidate designs are discussed and evaluated and recommendations are made for specific applications

  14. Petroleum pollution in the Gulf of Mexico and Caribbean Sea.

    Science.gov (United States)

    Botello, A V; Villanueva, S; Díaz, G

    1997-01-01

    In 1976, IOC-UNESCO and UNEP convened a meeting in Port of Spain to analyze the marine pollution problems in the region, noting that petroleum pollution was of regionwide concern and recommended initiating a research and monitoring program to determine the severity of the problem and monitor its effects. The Wider Caribbean is potentially one of the largest oil-producing areas in the world. Major production sites include Louisiana and Texas in the U.S.; the Bay of Campeche, Mexico; Lake Maracaibo, Venezuela; and the Gulf of Paria, Trinidad. All these are classified as high-risk production accident zones. Main sources of petroleum pollution in the Wider Caribbean are production, exploitation, transportation, urban and municipal discharges, refining and chemical wastes, normal loading and unloading operations, and accidental spills. About 5 million barrels of crude oil are transported daily in the Caribbean, thus generating an intense tanker traffic. It has been estimated that oil discharges from tank washings within the Wider Caribbean could be as high as 7 million barrels/yr. The results of the Caribbean Pollution Regional Program (CARIPOL) conducted between 1980 and 1987 pointed out that significant levels of petroleum pollution exist throughout the Wider Caribbean, including serious tar contamination of windward exposed beaches, high levels of floating tar within the major current systems, and very high levels of dissolved and dispersed hydrocarbons in surface waters. Major adverse effects of this type of pollution include: high tar levels on many beaches that either prevent their recreational use or require very expensive cleanup operations, distress and death for marine life, and responses in the enzyme systems of marine organisms that have been correlated with declines in reproductive success. Finally, the presence of polycyclic aromatic hydrocarbons (PAHs) in tissues of important economic species has been reported, creating a risk for public health because of

  15. Detection of seal contamination in heat-sealed food packaging based on active infrared thermography

    Science.gov (United States)

    D'huys, Karlien; Saeys, Wouter; De Ketelaere, Bart

    2015-05-01

    In the food industry packaging is often applied to protect the product from the environment, assuring quality and safety throughout shelf life if properly performed. Packaging quality depends on the material used and the closure (seal). The material is selected based on the specific needs of the food product to be wrapped. However, proper closure of the package is often harder to achieve. One problem possibly jeopardizing seal quality is the presence of food particles between the seal. Seal contamination can cause a decreased seal strength and thus an increased packaging failure risk. It can also trigger the formation of microchannels through which air and microorganisms can enter and spoil the enclosed food. Therefore, early detection and removal of seal-contaminated packages from the production chain is essential. In this work, a pulsed-type active thermography method using the heat of the sealing bars as an excitation source was studied for detecting seal contamination. The cooling profile of contaminated seals was recorded. The detection performance of four processing methods (based on a single frame, a fit of the cooling profile, pulsed phase thermography and a matched filter) was compared. High resolution digital images served as a reference to quantify contamination. The lowest detection limit (equivalent diameter of 0.63 mm) and the lowest processing time (0.42 s per sample) were obtained for the method based on a single frame. Presumably, practical limitations in the recording stage prevented the added value of active thermography to be fully reflected in this application.

  16. An Overview of Non-Metallic Brush Seal Technology

    Science.gov (United States)

    Ruggiero, Eric J.

    2009-01-01

    Non-metallic brush seals are ultra-low flow sealing elements ideal for low pressure differentials (brush seal is advantageous in terms of sealing capability during transients. However, if not designed properly, the bristle pack compliance can be detrimental to the performance of the seal. GE GLobal Research has investigated the stiffness and heat generation properties of non-metallic brush seals made from Kevlar and Carbon Fiber. The presentation will review the progress made on the design points of the seals, as well as highlight some current commercial applications of the technology.

  17. Aerodynamical sealing by air curtains

    Science.gov (United States)

    Frank, Daria; Linden, Paul

    2015-11-01

    Air curtains are artificial high-velocity plane turbulent jets which are installed in a doorway in order to reduce the heat and the mass exchange between two environments. The performance of an air curtain is assessed in terms of the sealing effectiveness E, the fraction of the exchange flow prevented by the air curtain compared to the open-door situation. The main controlling parameter for air curtain dynamics is the deflection modulus Dm representing the ratio of the momentum flux of the air curtain and the transverse forces acting on it due to the stack effect. In this talk, we examine the influence of two factors on the performance of an air curtain: the presence of an additional ventilation pathway in the room, such as a small top opening, and the effects of an opposing buoyancy force which for example arises if a downwards blowing air curtain is heated. Small-scale experiments were conducted to investigate the E (Dm) -curve of an air curtain in both situations. We present both experimental results and theoretical explanations for our observations. We also briefly illustrate how simplified models developed for air curtains can be used for more complex phenomena such as the effects of wind blowing around a model building on the ventilation rates through the openings.

  18. Rapid Sampling from Sealed Containers

    International Nuclear Information System (INIS)

    The authors have developed several different types of tools for sampling from sealed containers. These tools allow the user to rapidly drill into a closed container, extract a sample of its contents (gas, liquid, or free-flowing powder), and permanently reseal the point of entry. This is accomplished without exposing the user or the environment to the container contents, even while drilling. The entire process is completed in less than 15 seconds for a 55 gallon drum. Almost any kind of container can be sampled (regardless of the materials) with wall thicknesses up to 1.3 cm and internal pressures up to 8 atm. Samples can be taken from the top, sides, or bottom of a container. The sampling tools are inexpensive, small, and easy to use. They work with any battery-powered hand drill. This allows considerable safety, speed, flexibility, and maneuverability. The tools also permit the user to rapidly attach plumbing, a pressure relief valve, alarms, or other instrumentation to a container. Possible applications include drum venting, liquid transfer, container flushing, waste characterization, monitoring, sampling for archival or quality control purposes, emergency sampling by rapid response teams, counter-terrorism, non-proliferation and treaty verification, and use by law enforcement personnel during drug or environmental raids

  19. Seasonal energetics of northern phocid seals.

    Science.gov (United States)

    Ochoa-Acuña, Hugo G; McNab, Brian K; Miller, Edward H

    2009-03-01

    The metabolic rate of harp (Pagophilus groenlandicus), harbor (Phoca vitulina), and ringed seals (Pusa hispida) was measured at various temperatures in air and water to estimate basal metabolic rates (BMRs) in these species. The basal rate and body composition of three harp seals were also measured throughout the year to examine the extent to which they vary seasonally. Marine mammalian carnivores generally have BMRs that are over three times the rates expected from body mass in mammals generally, both as a response to a cold-water distribution and to carnivorous food habits with the basal rates of terrestrial carnivores averaging about 1.8 times the mean of mammals. Phocid seals, however, have basal rates of metabolism that are 30% lower than other marine carnivores. Captive seals undergo profound changes in body mass and food consumption throughout the year, and after accounting for changes in body mass, the lowest rate of food intake occurs in summer. Contrary to earlier observations, harp seals also have lower basal rates during summer than during winter, but the variation in BMR, relative to mass expectations, was not associated with changes in the size of fat deposits. The summer reduction in energy expenditure and food consumption correlated with a reduction in BMR. That is, changes in BMR account for a significant portion of the seasonal variation in energy expenditure in the harp seal. Changes in body mass of harp seals throughout the year were due not only to changes in the size of body fat deposits, but also to changes in lean body mass. These results suggest that bioenergetics models used to predict prey consumption by seals should include time-variant energy requirements. PMID:19049825

  20. The Advantage of Sensor Sealing Laser Welding

    Institute of Scientific and Technical Information of China (English)

    YAN Yezhi; XU yu

    2007-01-01

    @@ Laser Welding Inevitably Applied in Sen sor Production Certain kinds of sensors such as pressure sensor,temperature sensor, optic-electronic sensor etc. utilize welding seal according to different application environment. With precision components and IC which is isolated by inert gas inside, these sensors should be sealed and able to resist the pressure. So the welding process must avoid distortion and harm to the components and IC.

  1. Some Aspects of Sealed Nickel Cadmium Cells

    Directory of Open Access Journals (Sweden)

    P. K. Saha

    1967-11-01

    Full Text Available Sealed Nickel Cadmium Cell system is termed till today as the most reliable power pack for electronic apparatus specially in low temperature use. This paper brings out the development and production of sealed nickel cadmium cells of pocket plate construction. The author who has gained experience in production of Ni-Cd cells in East Germany discusses also the major problems faced by the battery manufactures of to-day.

  2. Extension in Mona Passage, Northeast Caribbean

    Science.gov (United States)

    Chaytor, J.D.; ten Brink, U.S.

    2010-01-01

    As shown by the recent Mw 7.0 Haiti earthquake, intra-arc deformation, which accompanies the subduction process, can present seismic and tsunami hazards to nearby islands. Spatially-limited diffuse tectonic deformation within the Northeast Caribbean Plate Boundary Zone likely led to the development of the submerged Mona Passage between Puerto Rico and the Dominican Republic. GPS geodetic data and a moderate to high level of seismicity indicate that extension within the region is ongoing. Newly-collected high-resolution multibeam bathymetry and multi-channel seismic reflection profiles and previously-collected samples are used here to determine the tectonic evolution of the Mona Passage intra-arc region. The passage is floored almost completely by Oligocene-Pliocene carbonate platform strata, which have undergone submarine and subaerial erosion. Structurally, the passage is characterized by W- to NNW-trending normal faults that offset the entire thickness of the Oligo-Pliocene carbonate platform rocks. The orientation of these faults is compatible with the NE-oriented extension vector observed in GPS data. Fault geometry best fits an oblique extension model rather than previously proposed single-phase, poly-phase, bending-moment, or rotation extension models. The intersection of these generally NW-trending faults in Mona Passage with the N-S oriented faults of Mona Canyon may reflect differing responses of the brittle upper-crust, along an arc-forearc rheological boundary, to oblique subduction along the Puerto Rico trench. Several faults within the passage, if ruptured completely, are long enough to generate earthquakes with magnitudes on the order of Mw 6.5-7. ?? 2010.

  3. Application study of magnetic fluid seal in hydraulic turbine

    Science.gov (United States)

    Yu, Z. Y.; Zhang, W.

    2012-11-01

    The waterpower resources of our country are abundant, and the hydroelectric power is developed, but at present the main shaft sealing device of hydraulic turbine is easy to wear and tear and the leakage is great. The magnetic fluid seal has the advantages of no contact, no wear, self-healing, long life and so on. In this paper, the magnetic fluid seal would be used in the main shaft of hydraulic turbine, the sealing structure was built the model, meshed the geometry, applied loads and solved by using MULTIPHYSICS in ANSYS software, the influence of the various sealing structural parameters such as tooth width, height, slot width, sealing gap on the sealing property were analyzed, the magnetic fluid sealing device suitable for large-diameter shaft and sealing water was designed, the sealing problem of the hydraulic turbine main shaft was solved effectively which will bring huge economic benefits.

  4. Emergency sacrificial sealing method in filters, equipment, or systems

    Science.gov (United States)

    Brown, Erik P

    2014-09-30

    A system seals a filter or equipment component to a base and will continue to seal the filter or equipment component to the base in the event of hot air or fire. The system includes a first sealing material between the filter or equipment component and the base; and a second sealing material between the filter or equipment component and the base and proximate the first sealing material. The first sealing material and the second seal material are positioned relative to each other and relative to the filter or equipment component and the base to seal the filter or equipment component to the base and upon the event of fire the second sealing material will be activated and expand to continue to seal the filter or equipment component to the base in the event of hot air or fire.

  5. Ongoing Diaspora: The Case of the French Caribbean

    OpenAIRE

    Perina, Mickaella

    2009-01-01

    The unusual status of the French overseas departments in today «post-colonial world» provides an interesting domain of investigation from which analyzing the concept of diaspora. If diaspora refers to dispersal to several locations, to a collective mythology of a homeland and to an idealization of the return clearly the French Caribbean was initially an African diaspora. But did it stop being a diaspora once the Caribbean territory became the homeland? If diaspora can be regarded as a state o...

  6. Regulation of spent sealed sources: Comparison study

    International Nuclear Information System (INIS)

    Sealed sources are used throughout the world for a variety of peaceful purposes. The small size, portability, and potential value of sealed sources make them vulnerable to misuse, improper disposal, and theft. In addition, management schemes and practices implemented in different countries can be somewhat conflicting and create problems for storage and disposal. In view of the importance of the radiological risks associated in management of these sources, most countries have laid down a regulatory framework to control it. In Egypt, the spent sources are generated mainly from medical/hospital industrial and research applications. This study identifies the spent sealed sources stored at Egypt and considers the regulation and management of spent sealed sources in Egypt, Czech Republic, Hungary, Estonia, Poland and Slovenia. Comparing between the existing Egyptian situation, IAEA Code of conduct on the safety and security of radioactive sources and the situation of these countries we can prepare developed regulatory recommendation package to the government of Egypt addressing all aspects of sealed sources management in Egypt. This work is performed through the joint project Integrated Management Program for Radioactive Sealed Sources (IMPRSS) between the government of Egypt and Sandia National Laboratories U.S., funded by the U.S, Agency for International Development and implemented through the U.S. Department of Energy. (author)

  7. Asphalt emulsion sealing of uranium mill tailings

    International Nuclear Information System (INIS)

    The use of asphalt emulsion to contain radon and radium in uranium tailings is being investigated at the Pacific Northwest Laboratory. Results of these studies indicate that a radon flux reduction of greater than 99% can be obtained using either a poured-on/sprayed-on seal (3.0 to 7.0 mm thick) or an admix seal (2.5 to 15.2 cm thick) containing about 18 wt % residual asphalt. A field test was carried out at the Grand Junction tailings pile in order to demonstrate the sealing process. A reduction in radon flux ranging from 4.5 to greater than 99% (76% average) was achieved using a 15.2 cm (6 in.) admix seal with a sprayed-on top coat. A hydrostatic stabilizer was used to apply the admix. This was followed by compaction to form the radon seal. Overburden was applied to provide a protective soil layer over the seal. Included in part of the overburden was a herbicide to prevent root penetration

  8. Current research on transcultural psychiatry in the Anglophone Caribbean: epistemological, public policy, and epidemiological challenges.

    Science.gov (United States)

    Hickling, Frederick W; Gibson, Roger C; Hutchinson, Gerard

    2013-12-01

    In this article, we review recent research on mental health in the Caribbean. Three major themes emerge: (a) the effects of colonialism on the Caribbean psyche; (b) decolonization of psychiatric public policy, including innovative treatment approaches, deinstitutionalization, and community and policy responses to mental health issues; and (c) the nature and epidemiology of psychiatric pathology among contemporary Caribbean people, with particular focus on migration, genetic versus social causation of psychosis and personality disorders, and mechanisms of resilience and social capital. Caribbean transcultural psychiatry illustrates the principles of equipoise unique to developing countries that protect the wellness and continued survival of postcolonial Caribbean people. PMID:24151148

  9. NEW DESIGN OF PISTON RODS SEALING UNIT OF STERLING ENGINE

    OpenAIRE

    Arapov, B.; Seytkazenova, K.; Seraliyev, G.

    2013-01-01

    The advantage of suggested design of sealing unit of Stirling engine actuating and displacing pistons is that due to supply to intergland space of medium with pressure half as large as average pressure of operating medium in working cylinder, pressure head on separate gland seals is decreased two times. This results in increase of durability of gland seals two times and more. Fluoroplastic seal glands have thin lobes with inner cone hole accommodating the sealed rod and are fitted on them pre...

  10. A Comparison of Candidate Seal Designs for Future Docking Systems

    Science.gov (United States)

    Dunlap, Patrick, H., Jr.; Steinetz, Bruce, M.

    2012-01-01

    NASA is developing a new docking system to support future space exploration missions to low Earth orbit, the Moon, and other destinations. A key component of this system is the seal at the main docking interface which inhibits the loss of cabin air once docking is complete. Depending on the mission, the seal must be able to dock in either a seal-on-flange or seal-on-seal configuration. Seal-on-flange mating would occur when a docking system equipped with a seal docks to a system with a flat metal flange. This would occur when a vehicle docks to a node on the International Space Station. Seal-on-seal mating would occur when two docking systems equipped with seals dock to each other. Two types of seal designs were identified for this application: Gask-O-seals and multi-piece seals. Both types of seals had a pair of seal bulbs to satisfy the redundancy requirement. A series of performance assessments and comparisons were made between the candidate seal designs indicating that they meet the requirements for leak rate and compression and adhesion loads under a range of operating conditions. Other design factors such as part count, integration into the docking system tunnel, seal-on-seal mating, and cost were also considered leading to the selection of the multi-piece seal design for the new docking system. The results of this study can be used by designers of future docking systems and other habitable volumes to select the seal design best-suited for their particular application.

  11. 49 CFR 803.5 - Use of the Seal.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 7 2010-10-01 2010-10-01 false Use of the Seal. 803.5 Section 803.5... OFFICIAL SEAL § 803.5 Use of the Seal. (a) The Seal is the official emblem of the Board and its use is... organization outside of the Board for permission to use the Seal must be made in writing to Director, Bureau...

  12. 东皋禅师的篆刻艺术及其在日本的影响%Seal Cutting Technique of Dong Gao, an Honourable Buddhist Monk and Its Influence on Japan

    Institute of Scientific and Technical Information of China (English)

    季琳

    2003-01-01

    在日本篆刻史上,东皋禅师的地位是无与伦比的,他使持续了相当长历史阶段的早期日本印坛的萧条冷落景象开始复苏,他凭借着自己在篆刻艺术上的造诣,揭开了日本篆刻的帷幕.本文论述了东皋禅师印风的出处、刀法的特点,及其对日本篆刻的重要影响.

  13. On the Ethnic and Religious Relationship in the Ming Dynasty from the Lion Button Ivory Monk Seal%从狮钮象牙僧印看明代的民族与宗教关系

    Institute of Scientific and Technical Information of China (English)

    彭晓静; 戴子佳

    2013-01-01

    2009年,甘肃省定西市岷县博物馆征集明代象牙印一方,经甘肃省文物鉴定委员会鉴定为明代狮钮象牙印.此印制作精美,造型雄浑,保存完整,雕刻精细,具有很高的艺术性和历史价值,不仅印证了历史文献的某些记载,亦是明代中央政府民族与宗教政策的实物见证.

  14. DEVELOPMENT OF A CERAMIC TAMPER INDICATING SEAL: SRNL CONTRIBUTIONS

    Energy Technology Data Exchange (ETDEWEB)

    Krementz, D.; Brinkman, K.; Martinez-Rodriguez, M.; Mendez-Torres, A.; Weeks, G.

    2013-06-03

    Savannah River National Laboratory (SRNL) and Sandia National Laboratories (SNL) are collaborating on development of a Ceramic Seal, also sometimes designated the Intrinsically Tamper Indicating Ceramic Seal (ITICS), which is a tamper indicating seal for international safeguards applications. The Ceramic Seal is designed to be a replacement for metal loop seals that are currently used by the IAEA and other safeguards organizations. The Ceramic Seal has numerous features that enhance the security of the seal, including a frangible ceramic body, protective and tamper indicating coatings, an intrinsic unique identifier using Laser Surface Authentication, electronics incorporated into the seal that provide cryptographic seal authentication, and user-friendly seal wire capture. A second generation prototype of the seal is currently under development whose seal body is of Low Temperature Co-fired Ceramic (LTCC) construction. SRNL has developed the mechanical design of the seal in an iterative process incorporating comments from the SNL vulnerability review team. SRNL is developing fluorescent tamper indicating coatings, with recent development focusing on optimizing the durability of the coatings and working with a vendor to develop a method to apply coatings on a 3-D surface. SRNL performed a study on the effects of radiation on the electronics of the seal and possible radiation shielding techniques to minimize the effects. SRNL is also investigating implementation of Laser Surface Authentication (LSA) as a means of unique identification of each seal and the effects of the surface coatings on the LSA signature.

  15. Heartworm (Acanthocheilonema spirocauda) and seal louse (Echinophthirius horridus) infections in harbour seals (Phoca vitulina) from the North and Baltic Seas

    Science.gov (United States)

    Lehnert, Kristina; Schwanke, Eva; Hahn, Kerstin; Wohlsein, Peter; Siebert, Ursula

    2016-07-01

    The seal louse (Echinophthirius [E.] horridus) and the heartworm (Acanthocheilonema [A.] spirocauda) are parasites of harbour seal (Phoca vitulina). Little is known about the role of the seal louse as a potential vector and its role for the development and transmission of heartworm larvae to their final host, the harbour seal. The life-cycle of the heartworm is still not fully understood. For the presented study, findings of 1191 stranded harbour seals collected along the North- and Baltic Sea coast between 1996 and 2013 were examined. 4.4% (n = 53) of these harbour seals were infected with adult heartworms and 3.4% (n = 40) harbour seals carried seal lice. The highest prevalence and level of infection with adult heartworms (A. spirocauda) (9.3%) and seal lice (E. horridus) (8.9%) were found on yearling harbour seals (7-18 months) compared to neonate and adult seals. Investigating seal lice (n = 35) for larval heartworm stages one larvae was encountered in an ethanol-fixated seal louse. During a health monitoring survey of live harbour seals, 109 animals were captured and examined during spring and autumn between 2008 and 2014. Blood samples were taken and microfilariae were discovered in blood smears in 41% (n = 45) of the examined harbour seals. Yearling seals (n = 21) showed higher prevalence (86%) and level of infection with microfilariae than adults. Microfilariae were identified as A. spirocauda by sequencing the species-specific COI gene in 24 blood samples. The high prevalence of microfilariae of A. spirocauda in blood samples (41%) is in contrast to the low prevalence of mature infections/adult specimens in stranded seals (4.4%) investigated. Although rare parasites of seals, the recent increase in prevalence of heartworm and seal lice in stranded seals and the relatively high occurrence of microfilaria in the free-ranging population underscore the importance of further studies investigating the immunology of infections and their transmission pathways, as

  16. Experiment on Wear Behavior of High Pressure Gas Seal Faces

    Institute of Scientific and Technical Information of China (English)

    XU Jing; PENG Xudong; BAI Shaoxian; MENG Xiangkai; LI Jiyun

    2014-01-01

    Current researches show that mechanical deformation of seal ring face makes fluid film clearance decrease at high pressure side, thus a divergent clearance is formed and face wear occurs more seriously at the high pressure side than that on the low pressure side. However, there is still lack of published experimental works enough to prove the theoretical results. In this paper, a spiral groove dry gas seal at high pressures is experimentally investigated so as to prove the face wear happened at the high pressure side of seal faces due to the face mechanical deformation, and the wear behavior affected by seal ring structure is also studied. The experimental results show that face wear would occur at the high pressure side of seal faces due to the deformation, thus the leakage and face temperature increase, which all satisfies the theoretical predictions. When sealed pressure is not less than 5 MPa, the pressure can provide enough opening force to separate the seal faces. The seal ring sizes have obvious influence on face wear. Face wear, leakage and face temperature of a dry gas seal with the smaller cross sectional area of seal ring are less than that of a dry gas seal with bigger one, and the difference of leakage rate between these two sizes of seal face width is in the range of 24%–25%. Compared with the effect of seal ring sizes, the effect of secondary O-ring seal position on face deformation and face wear is less. The differences between these two types of dry gas seals with different secondary O-ring seal positions are less than 5.9% when the rotational speed varies from 0 to 600 r/min. By linking face wear and sealing performance changes to the shift in mechanical deformation of seal ring, this research presents an important experimental method to study face deformation of a dry gas seal at high pressures.

  17. Development of sprayed ceramic seal systems for turbine gas path sealing

    Science.gov (United States)

    Bill, R. C.; Shiembob, L. T.; Stewart, O. L.

    1978-01-01

    A ceramic seal system is reported that employs plasma-sprayed graded metal/ceramic yttria stabilized zirconium oxide (YSZ). The performance characteristics of several YSZ configurations were determined through rig testing for thermal shock resistance, abradability, and erosion resistance. Results indicate that this type of sealing system offers the potential to meet operating requirements of future gas turbine engines.

  18. Development of a Whole Container Seal

    Energy Technology Data Exchange (ETDEWEB)

    Kuhn, Michael J [ORNL; Pickett, Chris A [ORNL; Stinson, Brad J [ORNL; Rowe, Nathan C [ORNL

    2014-01-01

    This paper outlines a technique for utilizing electrically conductive textiles as a whole container seal. This method has the potential to provide more robustness for ensuring that the container has not been breached versus conventional sealing methods that only provide tamper indication at the area used for normal access. The conductive textile is used as a distributed sensor for detecting and localizing container tamper or breach. For sealing purposes, the conductive fabric represents a bounded, near-infinite grid of resistors. The well-known infinite resistance grid problem was used to model and confirm the expected accuracy and validity of this approach. An experimental setup was built that uses a multiplexed Wheatstone bridge measurement to determine the resistances of a coarse electrode grid across the conductive fabric. Non-uniform resistance values of the grid infer the presence of damage or tears in the fabric. Results suggest accuracy proportional to the electrode spacing in determining the presence and location of disturbances in conductive fabric samples. Current work is focused on constructing experimental prototypes for field and environmental testing to gauge the performance of these whole container seals in real world conditions. We are also developing software and hardware to interface with the whole container seals. The latest prototypes are expected to provide more accuracy in detecting and localizing events, although detection of a penetration should be adequate for most sealing applications. We are also developing smart sensing nodes that integrate digital hardware and additional sensors (e.g., motion, humidity) into the electrode nodes within the whole container seal.

  19. 吐蕃时期僧人在唐蕃交往中的作用%The Role of Buddhist Monks in the Exchanges between Tang and Tubo in Tubo Regime

    Institute of Scientific and Technical Information of China (English)

    张莉

    2015-01-01

    At the beginning of its founding, Tubo Regime built the communication relationship with Tang Dynasty.With the increasing of the exchanges between Tang and Tubo, Tibetan -Han cultural communication was deepened constantly, too.Apart from the rulers of Tang and Tubo, and the ordinary people, a special group-Buddhist monks played an important role in this process.Both Han monks in Tubo and Tibetan monks communicated with each other in many fields such as religion, medicine, as-tronomy, etc.They were not only the cultural messengers between Han and Tibet, but also the propel-lants of the friendship between Tang and Tubo.%吐蕃王朝创立之初即与中原唐王朝建立了联系。随着唐蕃交往的日益频繁,汉藏两个民族之间的文化交流也不断加深。推动这一过程的除了唐朝与吐蕃的上层统治者、普通的民众,还有一个特殊的群体———僧人在其中发挥重要作用。入蕃汉僧以及吐蕃本土的藏族僧人在宗教、医学、天文等诸多领域进行相互交流与学习,他们是汉藏之间的文化使者,也是唐蕃友好关系的推动者。

  20. Adolescent Literacies in Latin America and the Caribbean

    Science.gov (United States)

    Bartlett, Lesley; Lopez, Dina; Mein, Erika; Valdiviezo, Laura A.

    2011-01-01

    In 2000, approximately 36 million youth and adults living in Latin America and the Caribbean were reported to be unable to read or write basic texts. Of these, 20 million were women. According to official statistics, some countries in Central America (Guatemala, Nicaragua, El Salvador, and Honduras) have a youth and adult literacy rate of 80% or…

  1. Spanish? What Spanish? The Search for a 'Caribbean Standard.'

    Science.gov (United States)

    Hollingsworth, C.

    1978-01-01

    Variations in lexicon, phonology, morphology, and syntax of Spanish as spoken in Venezuela, Cuba, Mexico, and Castile have led to a diversity in the types of Spanish taught in Caribbean schools. The Programa Interamericano de Linguistica y Ensenanza de Idiomas is conducting a survey which will provide authoritative standards for Spanish teachers.…

  2. Neighbourhood Factors and Depression among Adolescents in Four Caribbean Countries

    OpenAIRE

    Lowe, Gillian A.; Garth Lipps; Roger C Gibson; Sharon Halliday; Amrie Morris; Nelson Clarke; Wilson, Rosemarie N

    2014-01-01

    BACKGROUND: Past research suggests that perceived neighbourhood conditions may influence adolescents' emotional health. Relatively little research has been conducted examining the association of perceived neighbourhood conditions with depressive symptoms among Caribbean adolescents. This project examines the association of perceived neighbourhood conditions with levels of depressive symptoms among adolescents in Jamaica, the Bahamas, St. Kitts and Nevis, and St. Vincent. METHODS: Adolescents ...

  3. Paleoenvironmental evidence for first human colonization of the eastern Caribbean

    Science.gov (United States)

    Siegel, Peter E.; Jones, John G.; Pearsall, Deborah M.; Dunning, Nicholas P.; Farrell, Pat; Duncan, Neil A.; Curtis, Jason H.; Singh, Sushant K.

    2015-12-01

    Identifying and dating first human colonization of new places is challenging, especially when group sizes were small and material traces of their occupations were ephemeral. Generating reliable reconstructions of human colonization patterns from intact archaeological sites may be difficult to impossible given post-depositional taphonomic processes and in cases of island and coastal locations the inundation of landscapes resulting from post-Pleistocene sea-level rise. Paleoenvironmental reconstruction is proving to be a more reliable method of identifying small-scale human colonization events than archaeological data alone. We demonstrate the method through a sediment-coring project across the Lesser Antilles and southern Caribbean. Paleoenvironmental data were collected informing on the timing of multiple island-colonization events and land-use histories spanning the full range of human occupations in the Caribbean, from the initial forays into the islands through the arrival and eventual domination of the landscapes and indigenous people by Europeans. In some areas, our data complement archaeological, paleoecological, and historical findings from the Lesser Antilles and in others amplify understanding of colonization history. Here, we highlight data relating to the timing and process of initial colonization in the eastern Caribbean. In particular, paleoenvironmental data from Trinidad, Grenada, Martinique, and Marie-Galante (Guadeloupe) provide a basis for revisiting initial colonization models of the Caribbean. We conclude that archaeological programs addressing human occupations dating to the early to mid-Holocene, especially in dynamic coastal settings, should systematically incorporate paleoenvironmental investigations.

  4. Tectonic evolution and mantle structure of the Caribbean

    NARCIS (Netherlands)

    van Benthem, S.; Govers, R.; Spakman, W.; Wortel, R.

    2013-01-01

    We investigate whether predictions of mantle structure from tectonic reconstructions are in agreement with a detailed tomographic image of seismic P wave velocity structure under the Caribbean region. In the upper mantle, positive seismic anomalies are imaged under the Lesser Antilles and Puerto Ric

  5. Racial and Ego Identity Development in Black Caribbean College Students

    Science.gov (United States)

    Sanchez, Delida

    2013-01-01

    This study explored the relationships between racial identity attitudes and ego identity statuses among 255 Black Caribbean college students in the Northeast United States. Findings indicated that racial identity attitudes were predictive of ego identity statuses. Specifically, preencounter racial identity attitudes were predictive of lower scores…

  6. Unexpected evolutionary diversity in a recently extinct Caribbean mammal radiation

    Science.gov (United States)

    Brace, Selina; Turvey, Samuel T.; Weksler, Marcelo; Hoogland, Menno L. P.; Barnes, Ian

    2015-01-01

    Identifying general patterns of colonization and radiation in island faunas is often hindered by past human-caused extinctions. The insular Caribbean is one of the only complex oceanic-type island systems colonized by land mammals, but has witnessed the globally highest level of mammalian extinction during the Holocene. Using ancient DNA analysis, we reconstruct the evolutionary history of one of the Caribbean's now-extinct major mammal groups, the insular radiation of oryzomyine rice rats. Despite the significant problems of recovering DNA from prehistoric tropical archaeological material, it was possible to identify two discrete Late Miocene colonizations of the main Lesser Antillean island chain from mainland South America by oryzomyine lineages that were only distantly related. A high level of phylogenetic diversification was observed within oryzomyines across the Lesser Antilles, even between allopatric populations on the same island bank. The timing of oryzomyine colonization is closely similar to the age of several other Caribbean vertebrate taxa, suggesting that geomorphological conditions during the Late Miocene facilitated broadly simultaneous overwater waif dispersal of many South American lineages to the Lesser Antilles. These data provide an important baseline by which to further develop the Caribbean as a unique workshop for studying island evolution. PMID:25904660

  7. Nocturnal foraging by artificial light in three Caribbean bird species

    NARCIS (Netherlands)

    Debrot, A.O.

    2014-01-01

    I discuss observations of opportunistic use of artificial light for feeding in the dark by the native White-tailed Nightjar (Caprimulgus cayennensis), the long-established Cattle Egret (Bubulcus ibis), and the introduced Carib Grackle (Quiscalus lugubris) in Curaçao, Dutch Caribbean. The observation

  8. Gilligan's "Crisis of Connections": Contemporary Caribbean Women Writers.

    Science.gov (United States)

    Shea, Renee Hausmann

    1992-01-01

    Asserts that contemporary women novelists from the Caribbean are writing a new chapter in the literature of adolescence--a study of connections. Discusses the works of Carol Gilligan, and the idea of measuring women's development against a different truth than the male standard. Presents a 10-item annotated reading list. (PRA)

  9. The Turbellarian Hofstenia miamia in the Caribbean Sea

    NARCIS (Netherlands)

    Corrêa, Diva Diniz

    1963-01-01

    Some years ago I described Hofstenia miamia from Virginia Key, in the Miami area (CORREA 1960, p. 211 ff.). The species was based on a single specimen found among algae in the intertidal zone. When a grant from the Government of the Netherlands gave me the chance to work at the Caribbean Marine Biol

  10. 76 FR 32855 - National Caribbean-American Heritage Month, 2011

    Science.gov (United States)

    2011-06-07

    ... President of the United States of America A Proclamation The fabric of our Nation has been woven together... countries have come to America for centuries. Some came through the bondage of slavery. Others willfully... the United States and abroad, and we take pride in the contributions Caribbean Americans continue...

  11. 78 FR 33959 - National Caribbean-American Heritage Month, 2013

    Science.gov (United States)

    2013-06-06

    ... President of the United States of America A Proclamation For centuries, the United States and nations in the Caribbean have grown alongside each other as partners in progress. Separated by sea but united by a yearning... of slavery and segregation to widening the circle of opportunity for our sons and daughters....

  12. 77 FR 33601 - National Caribbean-American Heritage Month, 2012

    Science.gov (United States)

    2012-06-07

    ... the United States of America the two hundred and thirty-sixth. (Presidential Sig.) [FR Doc. 2012-13950... President of the United States of America A Proclamation Individuals and families from Caribbean countries... bonds of slavery. Some immigrated to America as children, clutching a parent's hand. Others came...

  13. Latin America and the Caribbean Refinery Sector Development Project - Clients

    OpenAIRE

    World Bank

    2002-01-01

    This report summarizes two years of intense activity dedicated to the study of the issues confronted by the refining industry in Latin America and the Caribbean. Following the program for phasing out of lead from gasoline and convinced of the importance to progress with the harmonization of oil product's technical specifications, the organizations--OLADE, ARPEL, and the World Bank--decided...

  14. Strengthening Coastal Pollution Management in the Wider Caribbean Region

    NARCIS (Netherlands)

    Lavieren, van H.; Metcalfe, C.D.; Drouillard, K.; Sale, P.; Gold-Bouchot, G.; Reid, R.; Vermeulen, L.C.

    2011-01-01

    Control of aquatic pollution is critical for improving coastal zone management and for the conservation of fisheries resources. Countries in the Wider Caribbean Region (WCR) generally lack monitoring capacity and do not have reliable information on the levels and distribution of pollutants, particul

  15. The Teacher as a Professional in the Caribbean Today.

    Science.gov (United States)

    World Confederation of Organizations of the Teaching Profession, Morges (Switzerland).

    The changing patterns of Caribbean society have affected and will continue to influence the concept of professionalism as it is applied to teaching. Teachers' organizations should promote the professional development of their members, as implied through acceptance of standards of personal conduct, competence on the job, and commitment to student…

  16. A Documentay Analysis on the Disposal of the Heritage of Monks and Nuns in the Ancient Times: With Special Reference to Dunhuang Devotions%古代僧尼遗产处理的文献分析——以敦煌愿文为例

    Institute of Scientific and Technical Information of China (English)

    龚泽军

    2012-01-01

    There are some documents on Dunhuang manuscripts that handle the property of dead monks and nuns. Scholars have taken full advantage of these documents to study the ways of handling the property of dead monks and nuns in the late period of Tang and Wudai dynasties and the early period of Song Dynasty. In Dunhuang Devotions, there is a kind of the almsgiving documents of dead monks and nuns, which is very different from general devotions. The latter is about daily supplies of dead monks and nuns by donors. This kind of the almsgiving documents about dead monks and nuns is a true reflection of the disposal of the property of dead monks and nuns in the late period of Tang and Wudai dynasties and the early period of Song Dynasty.%敦煌文献中有一定数量关于处理亡故僧尼财产的文书,学者已充分利用这类文书来研究晚唐五代宋初敦煌地区如何处置亡故僧尼财产。敦煌愿文中有一类《亡僧尼舍施文》,其与一般愿文有很大的不同,即施主所布施之物乃亡故僧尼之衣物等日常用品。这类《亡僧尼舍施文》亦真实地反映了晚唐五代宋初敦煌地区如何处置亡故僧尼的财物。

  17. Dust and Air Quality Forecasting in the Eastern Caribbean

    Science.gov (United States)

    Sealy, A. M.; Reyes, A.; Farrell, D. A.

    2015-12-01

    Significant amounts of dust travel across the northern tropical Atlantic to the Caribbean every year from the Sahara region. These dust concentrations in the Caribbean often exceed United States Environmental Protection Agency (EPA) standards for particulate matter of 2.5 microns or less (PM 2.5) which could have serious implications for human health in the region. Air pollution has become a major issue in the Caribbean because of urban development, increased vehicle emissions and growing industrialisation. However, the majority of territories in the Caribbean do not have routine air quality monitoring programmes and several do not have or enforce air quality standards for PM2.5 and PM10. As a result, the Caribbean Institute for Meteorology and Hydrology (CIMH) has taken the initiative to provide dust and air quality forecasts for the Eastern Caribbean using the advanced WRF-Chem modeling system. The applications of the WRF-Chem modelling system at CIMH that are currently being focused on are the coupled weather prediction/dispersion model to simulate the release and transport of constituents, especially Saharan dust transport and concentration; and as a coupled weather/dispersion/air quality model with full interaction of chemical species with prediction of particulate matter (PM2.5 and PM10). This will include future applications in the prediction of ozone (O3) and ultraviolet (UV) radiation as well as examining dust radiative forcing and effects on atmospheric precipitation and dynamics. The simulations are currently initialised at 00Z for a seven day forecast and run at 36 km resolution with a planned second domain (at 12 km) for air quality forecasts. Preliminary results from this study will be presented and compared to other dust forecast models currently used in other regions. This work also complements in situ measurements at Ragged Point, Barbados (oldest dust record since 1965), Martinique, Guadeloupe, French Guiana and Puerto Rico. The goal of this study

  18. On St. Sava’s (svetosavski redaction of Holy Monks images in Mileševa church narthex: Contribution to research in iconographic common places in the Nemanjićs’ church foundation

    Directory of Open Access Journals (Sweden)

    Milanović Vesna D.

    2002-01-01

    Full Text Available This paper discusses the possibility of further completing the to-date analyses on the content and scope of the painting program in the Mileševa narthex, representing a striking two-band frieze of the images of holy monks. This new examination does not ignore the already recognized distinguishing marks, and pays special attention to investigating possible relationships and links with the solutions in some other monuments of the same era not having been previously researched in detail. The undertaking of the author was in this case determined by an attempt to look into and throw some light onto the hardly discernible, and to date unexplained, original content of a smaller, only fragmentarily saved, and indeed the most challenging segment of that numerous and complex gathering of the images of holy monks. That segment included several extremely damaged and rather faded images of holy monks in the lower zone of the narthex southern wall (the band of standing figures, and the figure in the southern end of the adjoining, west wall, in all probability, belonged to it as well. Furthermore, according to the faded traces of previous iconographic characteristics of these figures, it could be seen that they constituted a compact and specific group with regard to the nearest images or groups of images, related to them by belonging to the same, more general category of the holiness. Bearing in mind the damage to heads and faces, as well as the disappearance of the inscription with the names and texts on the scrolls in their hands, the only way to discovering, or at least to closer determining the identity of the images presented was by means of to date unused circumstantial data, which could be provided by more extensive iconographic materials from the other monuments of the time. This way was, up to a certain extent, already open by previous numerous notes of the researchers on the essential closeness of solutions in Mileševa with those of Studenica and

  19. Educating and Preparing for Tsunamis in the Caribbean

    Science.gov (United States)

    von Hillebrandt-Andrade, C.; Aliaga, B.; Edwards, S.

    2013-12-01

    The Caribbean and Adjacent Regions has a long history of tsunamis and earthquakes. Over the past 500 years, more than 75 tsunamis have been documented in the region by the NOAA National Geophysical Data Center. Just since 1842, 3446 lives have been lost to tsunamis; this is more than in the Northeastern Pacific for the same time period. With a population of almost 160 million, over 40 million visitors a year and a heavy concentration of residents, tourists, businesses and critical infrastructure along its shores (especially in the northern and eastern Caribbean), the risk to lives and livelihoods is greater than ever before. The only way to survive a tsunami is to get out of harm's way before the waves strike. In the Caribbean given the relatively short distances from faults, potential submarine landslides and volcanoes to some of the coastlines, the tsunamis are likely to be short fused, so it is imperative that tsunami warnings be issued extremely quickly and people be educated on how to recognize and respond. Nevertheless, given that tsunamis occur infrequently as compared with hurricanes, it is a challenge for them to receive the priority they require in order to save lives when the next one strikes the region. Close cooperation among countries and territories is required for warning, but also for education and public awareness. Geographical vicinity and spoken languages need to be factored in when developing tsunami preparedness in the Caribbean, to make sure citizens receive a clear, reliable and sound science based message about the hazard and the risk. In 2006, in the wake of the Indian Ocean tsunami and after advocating without success for a Caribbean Tsunami Warning System since the mid 90's, the Intergovernmental Oceanographic Commission of UNESCO established the Intergovernmental Coordination Group for the Tsunami and other Coastal Hazards Warning System for the Caribbean and Adjacent Regions (CARIBE EWS). Its purpose is to advance an end to end tsunami

  20. Experimental toxoplasma gondii infection in grey seals (Halichoerus grypus)

    DEFF Research Database (Denmark)

    Gajadhar, A. A.; Measures, L.; Forbes, L. B.;

    2004-01-01

    Laboratory-reared animals were used to assess the susceptibility of seals (Halichoerus grypus) to Toxoplasma gondii infection. Four seals were each orally inoculated with 100 or 10,000 oocysts of T. gondii (VEG strain), and another 4 seals served as negative controls. Occasionally, mild behavioral...... changes were observed in all inoculated seals but not in control animals. A modified agglutination test revealed the presence of antibodies to T. gondii in sera collected from inoculated seals and mice inoculated as controls. No evidence of the parasite was found on an extensive histological examination...... of seal tissues, and immunohistochemical staining of tissue sections from inoculated seals revealed a single tissue cyst in only 1 seal. Control mice inoculated with 10 oocysts from the same inoculum given to seals became serologically and histologically positive for T. gondii. Cats that were fed brain...

  1. Solid oxide fuel cell having a glass composite seal

    Science.gov (United States)

    De Rose, Anthony J.; Mukerjee, Subhasish; Haltiner, Jr., Karl Jacob

    2013-04-16

    A solid oxide fuel cell stack having a plurality of cassettes and a glass composite seal disposed between the sealing surfaces of adjacent cassettes, thereby joining the cassettes and providing a hermetic seal therebetween. The glass composite seal includes an alkaline earth aluminosilicate (AEAS) glass disposed about a viscous glass such that the AEAS glass retains the viscous glass in a predetermined position between the first and second sealing surfaces. The AEAS glass provides geometric stability to the glass composite seal to maintain the proper distance between the adjacent cassettes while the viscous glass provides for a compliant and self-healing seal. The glass composite seal may include fibers, powders, and/or beads of zirconium oxide, aluminum oxide, yttria-stabilized zirconia (YSZ), or mixtures thereof, to enhance the desirable properties of the glass composite seal.

  2. NUMERICAL ANALYSIS OF LEAKAGE FLOW THROUGH TWO LABYRINTH SEALS

    Institute of Scientific and Technical Information of China (English)

    WANG Wei-zhe; LIU Ying-zheng; JIANG Pu-ning; CHEN Han-ping

    2007-01-01

    The leakage flow through two labyrinth seals, e.g the interlocking seal and the stepped seal, was numerically investigated. Preliminary calculation of the seal-cavity averaged pressure by using the one-dimensional control volume method showed favorable agreement with the experimental measurements. Subsequently, in-depth understanding of the fluid flow through the labyrinth seals was obtained by employing Computational Fluid Dynamics (CFD) and turbulence model, which resulted in a potential wealth of information like the streamline pattern, velocity vector field, and distribution of turbulent kinetic energy and static pressure. At the clearance of the seal the turbulent kinetic energy reached the peak value, while in the bulk region of the cavities it decayed fast. The static pressure rapidly dropped as the fluid flow went through the clearance; no distinct difference of the static pressure was inspected in the cavities. Also noted from the numerical results was that the stepped seal showed better sealing performance than the interlocking seal.

  3. Mechanical seal having a single-piece, perforated mating ring

    Science.gov (United States)

    Khonsari, Michael M.; Somanchi, Anoop K.

    2007-08-07

    A mechanical seal (e.g., single mechanical seals, double mechanical seals, tandem mechanical seals, bellows, pusher mechanical seals, and all types of rotating and reciprocating machines) with reduced contact surface temperature, reduced contact surface wear, or increased life span. The mechanical seal comprises a rotating ring and a single-piece, perforated mating ring, which improves heat transfer by controllably channeling coolant flow through the single-piece mating ring such that the coolant is in substantially uniform thermal contact with a substantial portion of the interior surface area of the seal face, while maintaining the structural integrity of the mechanical seal and minimizing the potential for coolant flow interruptions to the seal face caused by debris or contaminants (e.g., small solids and trash) in the coolant.

  4. Prognosing the durability of polymer sealings

    Directory of Open Access Journals (Sweden)

    W. Okularczyk

    2006-04-01

    Full Text Available Purpose: The paper describes the phenomena connected with the sealing for water hydraulic systems.Design/methodology/approach: For the durability tests two types of sealings, made of three polymeric materials recommended for use in water hydraulics systems have been used. In all investigation arrangements the same guide elements have been used. The tests have been performed maintaining water pressure on the sealing at a level of p = 8±1 MPa and the average speed of the piston rod of v ≈ 0.35 m/sec. Water temperature during investigations was regulated within the range of Tmin = 291 K and Tmax = 305 K. The leakage was distributed to the measurement hoses with the internal diameter of 5mm. For the investigations, the working piston rod with ø 45 f7 with the following parameters has been used: Material: chromium-nickel steel AISI 431 (Cr=16.7%, Ni=2.08% covered with hard chromium plating of ≥ 20 μm, micro-cracks number ≤ 5 000/mm2, Ra = 0.07 μm.Findings: Weibull method, thanks to its multifunctionality, helps to select elements for certain applications (required long failure-free mileages → high characteristic durability – sealings series 30413. Equipment which works sporadically → low characteristic durability but e.g. lower weight and sizes of sealing element – sealing series 30412.Practical implications: Within the confines of the given research concerning an optimal choice of piston rod sealing for water hydraulic systems, large dependence of the sealing durability on the properly chosen guide elements of the piston rod has been found. In extreme cases the durability changed even a few times.Originality/value: The Weibull method has been applied for assessment of durability and reliability of mechanical parts. A computer program has been used to compare two types of piston rod seals used in water hydraulic power systems. Durability limits have been estimated even though discontinued measurement data were used.

  5. Marine biodiversity in the Caribbean: regional estimates and distribution patterns.

    Directory of Open Access Journals (Sweden)

    Patricia Miloslavich

    Full Text Available This paper provides an analysis of the distribution patterns of marine biodiversity and summarizes the major activities of the Census of Marine Life program in the Caribbean region. The coastal Caribbean region is a large marine ecosystem (LME characterized by coral reefs, mangroves, and seagrasses, but including other environments, such as sandy beaches and rocky shores. These tropical ecosystems incorporate a high diversity of associated flora and fauna, and the nations that border the Caribbean collectively encompass a major global marine biodiversity hot spot. We analyze the state of knowledge of marine biodiversity based on the geographic distribution of georeferenced species records and regional taxonomic lists. A total of 12,046 marine species are reported in this paper for the Caribbean region. These include representatives from 31 animal phyla, two plant phyla, one group of Chromista, and three groups of Protoctista. Sampling effort has been greatest in shallow, nearshore waters, where there is relatively good coverage of species records; offshore and deep environments have been less studied. Additionally, we found that the currently accepted classification of marine ecoregions of the Caribbean did not apply for the benthic distributions of five relatively well known taxonomic groups. Coastal species richness tends to concentrate along the Antillean arc (Cuba to the southernmost Antilles and the northern coast of South America (Venezuela-Colombia, while no pattern can be observed in the deep sea with the available data. Several factors make it impossible to determine the extent to which these distribution patterns accurately reflect the true situation for marine biodiversity in general: (1 highly localized concentrations of collecting effort and a lack of collecting in many areas and ecosystems, (2 high variability among collecting methods, (3 limited taxonomic expertise for many groups, and (4 differing levels of activity in the study

  6. Marine biodiversity in the Caribbean: regional estimates and distribution patterns.

    Science.gov (United States)

    Miloslavich, Patricia; Díaz, Juan Manuel; Klein, Eduardo; Alvarado, Juan José; Díaz, Cristina; Gobin, Judith; Escobar-Briones, Elva; Cruz-Motta, Juan José; Weil, Ernesto; Cortés, Jorge; Bastidas, Ana Carolina; Robertson, Ross; Zapata, Fernando; Martín, Alberto; Castillo, Julio; Kazandjian, Aniuska; Ortiz, Manuel

    2010-08-02

    This paper provides an analysis of the distribution patterns of marine biodiversity and summarizes the major activities of the Census of Marine Life program in the Caribbean region. The coastal Caribbean region is a large marine ecosystem (LME) characterized by coral reefs, mangroves, and seagrasses, but including other environments, such as sandy beaches and rocky shores. These tropical ecosystems incorporate a high diversity of associated flora and fauna, and the nations that border the Caribbean collectively encompass a major global marine biodiversity hot spot. We analyze the state of knowledge of marine biodiversity based on the geographic distribution of georeferenced species records and regional taxonomic lists. A total of 12,046 marine species are reported in this paper for the Caribbean region. These include representatives from 31 animal phyla, two plant phyla, one group of Chromista, and three groups of Protoctista. Sampling effort has been greatest in shallow, nearshore waters, where there is relatively good coverage of species records; offshore and deep environments have been less studied. Additionally, we found that the currently accepted classification of marine ecoregions of the Caribbean did not apply for the benthic distributions of five relatively well known taxonomic groups. Coastal species richness tends to concentrate along the Antillean arc (Cuba to the southernmost Antilles) and the northern coast of South America (Venezuela-Colombia), while no pattern can be observed in the deep sea with the available data. Several factors make it impossible to determine the extent to which these distribution patterns accurately reflect the true situation for marine biodiversity in general: (1) highly localized concentrations of collecting effort and a lack of collecting in many areas and ecosystems, (2) high variability among collecting methods, (3) limited taxonomic expertise for many groups, and (4) differing levels of activity in the study of different

  7. Deformation of the Caribbean region: One plate or two?

    Science.gov (United States)

    Driscoll, Neal W.; Diebold, John B.

    1998-11-01

    New deep-penetrating high-resolution multichannel seismic reflection data collected in the eastern Caribbean during R/V Ewing cruise EW9501 imaged both the crustal structure and overlying stratigraphic successions. On the basis of this new multichannel seismic data, we define the geologic development of the Beata Ridge and Venezuelan basin. The Caribbean crust was formed by seafloor spreading in Late Jurassic Early Cretaceous time. Prior to the Senonian, widespread and rapid eruption of basaltic flows began in concert with extensional deformation of the Caribbean crust. Thick volcanic wedges characterized by divergent reflectors are observed along the boundary that separates rough from smooth oceanic crust, are coincident with an abrupt shallowing of the Moho, and appear to be bounded by a large, northwest-dipping fault system. The locus of major extensional deformation migrated through time from the Venezuelan basin to the western flank of the Beata Ridge. Extensional unloading of the Beata Ridge footwall caused uplift and rotation of the ridge. Sediment thicknesses and stratal geometry observed across the Venezuelan basin and Beata Ridge suggest that the majority of the deformation in this region occurred during and soon after the emplacement of the volcanics. Minor fault reactivation in the Neogene along the eastern flank of the Beata Ridge is associated with an accommodation zone (i.e., tear fault) that records a change in the deformation style from bending and subduction of the Caribbean plate along the Muertos Trough south of Puerto Rico to compressional deformation and obduction of the Caribbean plate south of Hispaniola. We propose that this difference in deformational style is, in part, a consequence of the thicker crust on the Beata Ridge, which is more resistant to subduction.

  8. The politics of representing the African diaspora in the Caribbean

    Directory of Open Access Journals (Sweden)

    Kevin A. Yelvington

    1994-07-01

    Full Text Available [First paragraph] Roots of Jamaican Culture. MERVYN C. ALLEYNE. London: Pluto Press, 1988. xii + 186 pp. (Paper US$ 15.95 Guinea's Other Suns: The African Dynamic in Trinidad Culture. MAUREEN WARNER-LEWIS. Foreword by Rex Nettleford. Dover MA: The Majority Press, 1991. xxii + 207 pp. (Paper US$ 9.95 A recent trend in anthropology is defined by the interest in the role of historical and political configurations in the constitution of local cultural practices. Unfortunately, with some notable individual exceptions, this is the same anthropology which has largely ignored the Caribbean and its "Islands of History."1 Of course, this says much, much more about the way in which anthropology constructs its subject than it says about the merits of the Caribbean case and the fundamental essence of these societies, born as they were in the unforgiving and defining moment of pervasive, persuasive, and pernicious European construction of "Otherness." As Trouillot (1992:22 writes, "Whereas anthropology prefers 'pre-contact' situations - or creates 'no-contact' situations - the Caribbean is nothing but contact." If the anthropological fiction of pristine societies, uninfluenced and uncontaminated by "outside" and more powerful structures and cultures cannot be supported for the Caribbean, then many anthropologists do one or both of the two anthropologically next best things: they take us on a journey that finds us exploding the "no-contact" myth over and over (I think it is called "strawpersonism", suddenly discovering political economy, history, and colonialism, and/or they end up constructing the "pristine" anyway by emphasizing those parts of a diaspora group's pre-Caribbean culture that are thought to remain as cultural "survivals."

  9. Status of the petroleum pollution in the Wider Caribbean Sea

    International Nuclear Information System (INIS)

    In 1976, the IOC-UNESCO and UNEP convened a meeting in Port of Spain to analyze the marine pollution problems in the region and noted that petroleum pollution was of region-wide concern and recommended to initiate a research and monitoring program to determine the severity of the problem and monitor its effects. Actually, the Wider Caribbean is potentially one of the largest oil producing areas in the world. Major production sites include Louisiana and Texas; USA; the Bay of Campeche, Mexico; Lake Maracaibo, Venezuela; and the Gulf of Paria, Trinidad; all which are classified as production accident high-risk zones. Main sources of petroleum pollution in the Wider Caribbean are: production, exploitation, transportation, urban and municipal discharges, refining and chemical wastes, normal loading operations and accidental spills. About 5 million of barrels are transported daily in the Caribbean, thus generating an intense tanker traffic. It has been estimated that oil discharges from tank washings within the Wider Caribbean could be as high as 7 millions barrels/year. The results of the CARIPOL Regional Programme conducted between 1980-1987 pointed out that a significant levels of petroleum pollution exists throughout the Wider Caribbean and include serious tar contamination of windward exposed beaches, high levels of floating tar within the major currents system and very high levels of dissolved/dispersed hydrocarbons in surface waters. Major effects of this petroleum pollution include: high tar level on many beaches that either prevent recreational use or require very expensive clean-up operations, distress and death to marine life and responses in the enzyme systems of marine organisms that have been correlated with declines in reproductive success. Finally the presence of polycyclic aromatic hydrocarbons in tissues of important economic species have been reported with its potential carcinogenic effects. (author)

  10. VOLCANIC TSUNAMI GENERATING SOURCE MECHANISMS IN THE EASTERN CARIBBEAN REGION

    Directory of Open Access Journals (Sweden)

    George Pararas-Carayannis

    2004-01-01

    Full Text Available Earthquakes, volcanic eruptions, volcanic island flank failures and underwater slides have generated numerous destructive tsunamis in the Caribbean region. Convergent, compressional and collisional tectonic activity caused primarily from the eastward movement of the Caribbean Plate in relation to the North American, Atlantic and South American Plates, is responsible for zones of subduction in the region, the formation of island arcs and the evolution of particular volcanic centers on the overlying plate. The inter-plate tectonic interaction and deformation along these marginal boundaries result in moderate seismic and volcanic events that can generate tsunamis by a number of different mechanisms. The active geo-dynamic processes have created the Lesser Antilles, an arc of small islands with volcanoes characterized by both effusive and explosive activity. Eruption mechanisms of these Caribbean volcanoes are complex and often anomalous. Collapses of lava domes often precede major eruptions, which may vary in intensity from Strombolian to Plinian. Locally catastrophic, short-period tsunami-like waves can be generated directly by lateral, direct or channelized volcanic blast episodes, or in combination with collateral air pressure perturbations, nuéss ardentes, pyroclastic flows, lahars, or cascading debris avalanches. Submarine volcanic caldera collapses can also generate locally destructive tsunami waves. Volcanoes in the Eastern Caribbean Region have unstable flanks. Destructive local tsunamis may be generated from aerial and submarine volcanic edifice mass edifice flank failures, which may be triggered by volcanic episodes, lava dome collapses, or simply by gravitational instabilities. The present report evaluates volcanic mechanisms, resulting flank failure processes and their potential for tsunami generation. More specifically, the report evaluates recent volcanic eruption mechanisms of the Soufriere Hills volcano on Montserrat, of Mt. Pel

  11. The status of grey seals in Britain

    Directory of Open Access Journals (Sweden)

    C D Duck

    2013-10-01

    Full Text Available Grey seal pup production in Scotland was estimated through annual aerial surveys of the main grey seal breeding colonies. Between 3 and 7 counts of pups were obtained for each colony at intervals through the course of the breeding season. Pup production for individual colonies was estimated from the series of counts using a maximum likelihood model. At 3 colonies, 2 in England, annual pup production was estimated using ground counts. Between the early 1960s and the early 1990s, grey seal pup production progressively increased. At colonies in the Inner and Outer Hebrides, production appeared to stabilize during the 1990s and has remained so. Pup production at colonies in Orkney and in the North Sea has continued to increase but in recent years the rate of increase has declined. This may imply that the UK grey seal population is reaching some limit to its size. The observed changes in pup production imply that some density dependent factors are affecting the British grey seal population. Changes in either juvenile survival and/or female fecundity are the most likely options. Without knowing which of these, or what combination of these factors, is operating, estimating total population size is complicated.

  12. Tags and seals for arms control verification

    Energy Technology Data Exchange (ETDEWEB)

    DeVolpi, A.

    1990-09-18

    Tags and seals have long been recognized as important tools in arms control. The trend in control of armaments is to limit militarily significant equipment that is capable of being verified through direct and cooperative means, chiefly on-site inspection or monitoring. Although this paper will focus on the CFE treaty, the role of tags and seals for other treaties will also be addressed. Published technology and concepts will be reviewed, based on open sources. Arms control verification tags are defined as unique identifiers designed to be tamper-revealing; in that respect, seals are similar, being used as indicators of unauthorized access. Tamper-revealing tags might be considered as single-point markers, seals as two-point couplings, and nets as volume containment. The functions of an arms control tag can be considered to be two-fold: to provide field verification of the identity of a treaty-limited item (TLI), and to have a means of authentication of the tag and its tamper-revealing features. Authentication could take place in the field or be completed elsewhere. For CFE, the goal of tags and seals can be to reduce the overall cost of the entire verification system.

  13. Sealed sources in Peru: advances and outlook

    International Nuclear Information System (INIS)

    Cementation of spent sealed sources is performed by the Radioactive Waste Management Group of the Peruvian Institute of Nuclear Energy (IPEN). The sealed sources are collected in different areas of the country and brought to the RACSO nuclear centre, a national storage and conditioning facility for spent sources from industry and medical institutions. In addition to its amenities dedicated to research and the production of radioisotopes, the RACSO nuclear centre features a complex of some 1.5 ha for radioactive waste management that includes an infiltration bed and chemical treatment plant for liquid waste, compacting equipment and trenches for solid radioactive waste, a tank for the elimination of biological residues and a temporary storage emplacement for radioactive waste immobilized in cement cylinder casings. The steps described are the unpacking, identification of spent sealed sources, placement of the source in shielding, cementation, solidification, tagging and storage, as well as the actions taken to comply with the appropriate measures of radiological protection. (author)

  14. Supersonic propagation medium sealing device, and sealing method using the device

    International Nuclear Information System (INIS)

    The present invention concerns a supersonic flaw detection for equipments of a nuclear power plant and provides a device and a method of sealing a liquid medium of a supersonic propagation medium (couplant) into a narrow gap. Namely, the couplant is formed by using a liquid medium such as water or glycerin. A sealing mechanism seals the gap in conforming to the shape of a lower end thereof. An enclosing mechanism penetrates the sealing mechanism and sucks the liquid medium by evacuating the gap. A cleaning liquid may be sucked after completion of the detection. A sealing material of the sealing mechanism is formed by cutting a liquid silicone resin, a curing type silicone resin material or a strip-like sealing material and bonding it conforming to the shape. The device of the present invention can be used irrespective of the shape of the portion to be detected. Accordingly, it is used for supersonic flaw detection for welded portions and heat affected portions between a CRD stab tube and an end plate of a reactor pressure vessel to improve the accuracy of the detection. (I.S.)

  15. SSME Seal Test Program: Test results for sawtooth pattern damper seal

    Science.gov (United States)

    Childs, D. W.

    1986-01-01

    Direct and transverse force coefficients for 11, sawtooth-pattern, and damper-seal configurations were examined. The designation damper seal uses a deliberately roughened stator and smooth rotor to increase the net damping force developed by a seal. The designation sawtooth-pattern refers to a stator roughness pattern. The sawtooth pattern yields axial grooves in the stator which are interrupted by spacer elements which act as flow constrictions or dams. All seals use the same smooth rotor and have the same, constant, minimum clearance. The stators examined the consequences of changes in the following design parameters: (1) axial-groove depth; (2) number of teeth: (3) number of sawtooth sections; (4) number of spacer elements; (5) dam width; (6) axially aligned sawtooth sections versus axially-staggered sawtooth sections; and (7) groove geometry. It is found that none of the sawtooth-pattern seal performs as well as the best round-hole-pattern seal. Maximum damping configurations for the sawtooth and round-hole-pattern stators have comparable stiffness performance. Several of the sawtooth pattern stators outperformed the best round-hole pattern seal.

  16. Anaglyph with Landsat Virgin Islands, Caribbean

    Science.gov (United States)

    2003-01-01

    St. Thomas, St. John, Tortola, and Virgin Gorda are the four main islands (lower left to upper right) of this map-view anaglyph of the U.S. Virgin Islands and British Virgin Islands, along the northeast perimeter of the Caribbean Sea. For this view, a nearly cloud-free Landsat image was draped over elevation data from the Shuttle Radar Topography Mission (SRTM), and shading derived from the SRTM data was added to enhance the topographic expression. Coral reefs fringe the islands in many locations and appear as bright patterns in near-shore waters. Tropical vegetation appears fairly dark with smooth tones, as compared to the brighter speckled patterns of towns and other developments.As in much of the world, topography is the primary factor in the pattern of land use development in the Virgin Islands. Topography across most of the islands is quite rugged, and although the steep slopes create a scenic setting, they crowd most development into the small areas of low relief terrain, generally along the shoreline. The topographic pattern also affects water supply, wastewater disposal, landfill locations, road construction, and most other features of the development infrastructure. Topography also defines the natural drainage pattern, which is the major consideration in anticipating tropical storm water runoff dangers, as well as the dangers of heightened sediment impacts upon the adjacent coral reefs.Landsat has been providing visible and infrared views of the Earth since 1972. SRTM elevation data matches the 30-meter (98-foot) resolution of most Landsat images and substantially helps in analyzing the large and growing Landsat image archive.Elevation data used in this image were acquired by the Shuttle Radar Topography Mission aboard the Space Shuttle Endeavour, launched on February 11, 2000. The mission used the same radar instrument that comprised the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar that flew twice on the Space Shuttle Endeavour in 1994. The

  17. Dynamic analysis of C/C composite finger seal

    Institute of Scientific and Technical Information of China (English)

    Chen Guoding; Wang Li’na; Yu Qiangpeng; Su Hua

    2014-01-01

    A seal device as an important component of aeroengines has decisive influence on per-formance, reliability, and working life of aeroengines. With the development of aeroengines, demands on the performance characteristics of seal devices are made strictly. Finger seal as a novel kind of sealing device, recently attracts more and more attentions in academic circles and engineer-ing fields at home and abroad. Research on finger seals has been extensively developed, especially on leakage and wear performances under dynamic conditions. However, it is a pity that the work on finger seals has been limited with a single approach that is improving the performance by structural optimization;in addition, the technology of dynamic analysis on finger seals is weak. Aiming at the problems mentioned above, a distributed mass equivalent dynamic model of finger seals considering the coupling effect of overlaid laminates is established in the present paper, the dynamic perfor-mance of 2.5 dimension C/C composite finger seal is analyzed with the model, and then the effects of fiber bundle density and fiber bundle preparation direction on finger seal’s dynamic performance are discussed, as well as compared with those of Co-based alloy finger seal. The current work is about dynamic analysis of finger seals and application of C/C composite in this paper may have much academic significance and many engineering values for improving research level of finger seal dynamics and exploring feasibility of C/C composite being used for finger seals.

  18. Seal Wire Integrity Verification Instrument: Evaluation of Laboratory Prototypes

    International Nuclear Information System (INIS)

    Tamper indicating devices (TIDs) provide evidence that sensitive items, to which they have been applied, have been tampered with or not. Passive wire-loop seals, a class of TIDs, are generally comprised of a multi-strand seal wire that is threaded through or around key features and a unique seal body that captures and restrains the seal wire. Seal integrity resides with unique identification of the seal and the integrity of the seal body and the seal wire. Upon inspection, the seal wire may be cut and the full length inspected. A new seal may be applied in the field as a replacement, if desired. Seal wire inspection typically requires visual and tactile examinations, which are both subjective. A need therefore exists to develop seal wire inspection technology that is easy to use in the field, is objective, provides an auditable data trail, and has low error rates. Expected benefits, if successfully implemented, are improved on-site inspection reliability and security. The work scope for this effort was restricted to integrity of seal wire used by the International Atomic Energy Agency (IAEA) and resulted in development of a wire integrity verification instrument (WIVI) laboratory prototype. Work included a performance evaluation of a laboratory-bench-top system, and design and delivery of two WIVI laboratory prototypes. The paper describes the basic physics of the eddy current measurement, a description of the WIVI laboratory prototype, and an initial evaluation performed by IAEA personnel.

  19. Dynamic analysis of C/C composite finger seal

    Directory of Open Access Journals (Sweden)

    Chen Guoding

    2014-06-01

    Full Text Available A seal device as an important component of aeroengines has decisive influence on performance, reliability, and working life of aeroengines. With the development of aeroengines, demands on the performance characteristics of seal devices are made strictly. Finger seal as a novel kind of sealing device, recently attracts more and more attentions in academic circles and engineering fields at home and abroad. Research on finger seals has been extensively developed, especially on leakage and wear performances under dynamic conditions. However, it is a pity that the work on finger seals has been limited with a single approach that is improving the performance by structural optimization; in addition, the technology of dynamic analysis on finger seals is weak. Aiming at the problems mentioned above, a distributed mass equivalent dynamic model of finger seals considering the coupling effect of overlaid laminates is established in the present paper, the dynamic performance of 2.5 dimension C/C composite finger seal is analyzed with the model, and then the effects of fiber bundle density and fiber bundle preparation direction on finger seal’s dynamic performance are discussed, as well as compared with those of Co-based alloy finger seal. The current work is about dynamic analysis of finger seals and application of C/C composite in this paper may have much academic significance and many engineering values for improving research level of finger seal dynamics and exploring feasibility of C/C composite being used for finger seals.

  20. Study on a new type of sealing - regeneration-labyrinth sealing for displacer in cryocoolers: Part I - Theoretical study

    Science.gov (United States)

    Liu, L. Q.; Zhang, L.

    2000-02-01

    A new concept of sealing structure - regeneration-labyrinth sealing has been put forward to substitute for sealing rings that influence seriously the performance of cryocoolers. A program, which can simulate the thermophysical process occurring in the sealing structure, is developed consequently. Using numerical simulation, the reasonable structure of the regeneration-labyrinth sealing has been determined. The influences of some parameters, such as the heat transfer coefficient of forced convection, the cylinder-displacer gap, the diameter and length of cylinder on the losses of cooling capacity have been studied numerically. As a result, the designing principle of the new type of sealing is obtained.

  1. Bentonite as a waste isolation pilot plant shaft sealing material

    International Nuclear Information System (INIS)

    Current designs of the shaft sealing system for the Waste Isolation Pilot Plant (WIPP) propose using bentonite as a primary sealing component. The shaft sealing designs anticipate that compacted bentonite sealing components can perform through the 10,000-year regulatory period and beyond. To evaluate the acceptability of bentonite as a sealing material for the WIPP, this report identifies references that deal with the properties and characteristics of bentonite that may affect its behavior in the WIPP environment. This report reviews published studies that discuss using bentonite as sealing material for nuclear waste disposal, environmental restoration, toxic and chemical waste disposal, landfill liners, and applications in the petroleum industry. This report identifies the physical and chemical properties, stability and seal construction technologies of bentonite seals in shafts, especially in a saline brine environment. This report focuses on permeability, swelling pressure, strength, stiffness, longevity, and densification properties of bentonites

  2. Dual-shank attachment design for omega seals

    Science.gov (United States)

    Sattinger, Stanley S.

    1978-01-01

    An improved apparatus and process for attaching welded omega seal segments to reactor heads, standpipes, mechanisms, and plugs comprises a first shank in combination with a second shank to attach an omega seal at a metal-to-metal interface.

  3. Evaluation of Subterranean Subsidence at Seal Beach National Wildlife Refuge

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The purpose of this study was to determine the amount of subsurface subsidence at Naval Weapons Station Seal Beach (NWSSB) areas which include Seal Beach National...

  4. Bentonite as a waste isolation pilot plant shaft sealing material

    Energy Technology Data Exchange (ETDEWEB)

    Daemen, J.; Ran, Chongwei [Univ. of Nevada, Reno, NV (United States)

    1996-12-01

    Current designs of the shaft sealing system for the Waste Isolation Pilot Plant (WIPP) propose using bentonite as a primary sealing component. The shaft sealing designs anticipate that compacted bentonite sealing components can perform through the 10,000-year regulatory period and beyond. To evaluate the acceptability of bentonite as a sealing material for the WIPP, this report identifies references that deal with the properties and characteristics of bentonite that may affect its behavior in the WIPP environment. This report reviews published studies that discuss using bentonite as sealing material for nuclear waste disposal, environmental restoration, toxic and chemical waste disposal, landfill liners, and applications in the petroleum industry. This report identifies the physical and chemical properties, stability and seal construction technologies of bentonite seals in shafts, especially in a saline brine environment. This report focuses on permeability, swelling pressure, strength, stiffness, longevity, and densification properties of bentonites.

  5. Sites for priority biodiversity conservation in the Caribbean Islands Biodiversity Hotspot

    OpenAIRE

    V. Anadon-Irizarry; D.C. Wege; A. Upgren; Young, R.; Boom, B; Y.M. Leon; Y. Arias; Koenig, K.; Morales, A.L.; Burke, W.

    2012-01-01

    The Caribbean Islands Biodiversity Hotspot is exceptionally important for global biodiversity conservation due to high levels of species endemism and threat. A total of 755 Caribbean plant and vertebrate species are considered globally threatened, making it one of the top Biodiversity Hotspots in terms of threat levels. In 2009, Key Biodiversity Areas (KBAs) were identified for the Caribbean Islands through a regional-level analysis of accessible data and literature, followed by extensive nat...

  6. A morbillivirus causing mass mortality in seals.

    NARCIS (Netherlands)

    A.D.M.E. Osterhaus (Ab)

    1989-01-01

    textabstractDuring an outbreak of a serious apparently infectious disease among harbour seals (Phoca vitulina), which started in the Kattegat area in April 1988 and rapidly spread to the North sea, the Wadden sea and the Baltic sea, greater than 17,000 animals died within a period of eight months. I

  7. Positive contact, self retaining bearing seals

    Science.gov (United States)

    Johnson, Bruce H.; Larsen, Lawrence E.; Welch, Edmund F.

    1992-05-05

    An ultra-low friction bearing including an inner race, an outer race, bearing elements engaged between the inner and outer races and a seal between the inner and outer races is disclosed. The seal includes first and second sealing washers. The first washer has an outer diameter greater than an inner diameter of the outer race and an inner diameter greater than the outer diameter of the inner race. The second washer has an inner diameter less than the outer diameter of the inner race and an outer diameter less than the inner diameter of the outer race. The first washer slidably engages the outer race, the second washer slidably engages the inner race and the washers overlap and slidably engage one another. One of the washers snap fits into its respective inner or outer race while the other washer engages a stepped surface of the other of the inner and outer races. The grooved and stepped surface are offset from one another in a longitudinal direction of the races such that the washers are conically loaded thus providing a seal between the inner and outer races sufficient to prevent lubricant and contaminating particles from passing therethrough. The washers are made from a non-metallic semi-flexible low-modulus material.

  8. Measure Guideline: Guide to Attic Air Sealing

    Energy Technology Data Exchange (ETDEWEB)

    Lstiburek, J.

    2014-09-01

    The Guide to Attic Air Sealing was completed in 2010 and although not in the standard Measure Guideline format, is intended to be a Measure Guideline on Attic Air Sealing. The guide was reviewed during two industry stakeholders meetings held on December 18th, 2009 and January 15th, 2010, and modified based on the comments received. Please do not make comments on the Building America format of this document. The purpose of the Guide to Attic Air Sealing is to provide information and recommendations for the preparation work necessary prior to adding attic insulation. Even though the purpose of this guide is to save energy - health, safety and durability should not be compromised by energy efficiency. Accordingly, combustion safety and ventilation for indoor air quality are addressed first. Durability and attic ventilation then follow. Finally, to maximize energy savings, air sealing is completed prior to insulating. The guide is intended for home remodelers, builders, insulation contractors, mechanical contractors, general contractors who have previously done remodeling and homeowners as a guide to the work that needs to be done.

  9. K-Basin isolation barrier seal

    International Nuclear Information System (INIS)

    This report documents various aspects of the design, analysis, procurement, and fabrication of the hydraulic seal on the isolation barriers to be installed in the 100-K Area spent nuclear fuel basin. The isolation barrier is used to keep water in the basin in the event of an earthquake

  10. Sealing materials for solid oxide fuel cells

    Energy Technology Data Exchange (ETDEWEB)

    Larsen, P.H.

    1999-02-01

    A major obstacle in the achievement of high electrical efficiency for planar solid oxide fuel cell stacks (SOFC) is the need for long term stable seals at the operational temperature between 850 and 1000 deg. C. In the present work the formation and properties of sealing materials for SOFC stacks that fulfil the necessary requirements were investigated. The work comprises analysis of sealing material properties independently, in simple systems as well as tests in real SOFC stacks. The analysed sealing materials were based on pure glasses or glass-ceramic composites having B{sub 2}O{sub 3}, P{sub 2}O{sub 5} or siO{sub 2} as glass formers, and the following four glass systems were investigated: MgO/caO/Cr{sub 2}O{sub 3}-Al{sub 2}O{sub 3}B{sub 2}O{sub 3}-P{sub 2}O{sub 5}, MgO-Al{sub 2}O{sub 3}-P{sub 2}O{sub 5}, MgO-Al{sub 2}O{sub 3}-P{sub 2}O{sub 5}-SiO{sub 2} and BaO/Na{sub 2}O-Al{sub 2}O{sub 3}-SiO{sub 2}. (au) 32 tabs., 106 ills., 107 refs.

  11. THE PROBLEMS AND PROSPECTS OF THE USE OF ELASTOMER SEALS FOR SEALING OF UNDERGROUND STRUCTURES

    OpenAIRE

    L. H. Politikova; Leshchenko, V. I.; M. V. Zahorskyi; M. V. Mykhailenko; Khorolskyi, M. S.

    2007-01-01

    The research work on creation of effective rubber sealants for hermetic sealing of joints of underground structures from modular ferro-concrete and pig-iron including the underground tunnel casings is carried out.

  12. The 2009/2010 Caribbean drought: a case study.

    Science.gov (United States)

    Peters, Everson J

    2015-10-01

    The impacts of drought in the Caribbean have not been as dramatic as in some other parts of world, but it is not exempt from the experiences of drought. As a result of the effects of a prolonged drought in 2009/2010, the agenda for the 21st Inter-Sessional Meeting of the Caribbean Community (CARICOM) paid particular attention to the issue of drought. This paper reviews the management framework for responding to drought disasters in five CARICOM countries. The paper also reports on some of the effects of the 2009/2010 drought with particular reference to Grenada and the Grenadines. During the drought in these islands there were numerous bush fires with devastating effects on agriculture, severe water shortages that impacted on the tourism industry and other social effects. It is evident that there was inadequate preparation for the event. Greater planning and investment are therefore required to reduce future impacts. PMID:25754334

  13. CARIBBEAN OFFSHORE CORPORATE STRUCTURES UNDER A SWOT ANALYSIS

    Directory of Open Access Journals (Sweden)

    Ana-Maria GEAMÃNU

    2015-04-01

    Full Text Available Tax havens have long been under the attention of numerous Governments and International Organizations which triggered the concern of an uneven playing field in the taxation area. As a result numerous amendments have been made to both their commercial and tax legislations in order to be in line with the internationally agreed tax standards. The aim of this article is to conduct a SWOT analysis on the offshore corporate structures found in the Caribbean landscape. Based on a selection process of the most commonly recognized tax havens in the Caribbean region and an analysis of their offshore companies at the level of incorporation, administration, activities conducted and costs, a set of frequently met characteristics have been identified which stand at the basis of the SWOT analysis. The results stand to present a comprehensive four dimension framework of the offshore corporate structures in regards to their strengths, weaknesses, opportunities and threats.

  14. Curriculum, human development and integral formation within the colombian caribbean

    Directory of Open Access Journals (Sweden)

    Álvaro Rodríguez Akle

    2013-10-01

    Full Text Available This article describes the reality of the colombian Caribbean from the perspective of human development integral to start to understand that problematic situations are opportunities to enhance the transformations that allow to retrieve the subject social and collective. So the reconstruction of regional identity from the contributions of educational communities that build-oriented curriculum to become full, proactive, people with leadership and management capacity for sustainable development in a changing world. The article proposes some strategies to address alternatives to a society in which the quality of life and human dignity are the sense of the daily work in the context of the caribbean colombianidad and globalism in practice.  

  15. 12 CFR 905.26 - Official logo and seal.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 7 2010-01-01 2010-01-01 false Official logo and seal. 905.26 Section 905.26... OPERATIONS DESCRIPTION OF ORGANIZATION AND FUNCTIONS Miscellaneous § 905.26 Official logo and seal. This... as the official seal used to certify and authenticate official documents of the Board of...

  16. 32 CFR 150.1 - Name and seal.

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 1 2010-07-01 2010-07-01 false Name and seal. 150.1 Section 150.1 National... JUSTICE COURTS OF CRIMINAL APPEALS RULES OF PRACTICE AND PROCEDURE § 150.1 Name and seal. (a) The titles... Court is authorized a seal in the discretion of the Judge Advocate General concerned. The design of...

  17. 50 CFR 223.201 - Guadalupe fur seal.

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 7 2010-10-01 2010-10-01 false Guadalupe fur seal. 223.201 Section 223... Applicable to Threatened Marine and Anadromous Species § 223.201 Guadalupe fur seal. (a) Prohibitions. The... seal except as provided in paragraph (b) of this section. (b) Exceptions. (1) The...

  18. 17 CFR 2.2 - Authority to affix seal.

    Science.gov (United States)

    2010-04-01

    ... 17 Commodity and Securities Exchanges 1 2010-04-01 2010-04-01 false Authority to affix seal. 2.2 Section 2.2 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION OFFICIAL SEAL § 2.2 Authority to affix seal. (a) The following officials of the Commodity Futures Trading Commission...

  19. 46 CFR 176.704 - Breaking of safety valve seals.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Breaking of safety valve seals. 176.704 Section 176.704... TONS) INSPECTION AND CERTIFICATION Repairs and Alterations § 176.704 Breaking of safety valve seals... the seal on a boiler safety valve on a vessel is broken....

  20. 50 CFR 216.71 - Allowable take of fur seals.

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 7 2010-10-01 2010-10-01 false Allowable take of fur seals. 216.71... MAMMALS Pribilof Islands, Taking for Subsistence Purposes § 216.71 Allowable take of fur seals. Pribilovians may take fur seals on the Pribilof Islands if such taking is (a) For subsistence uses, and (b)...

  1. 46 CFR 115.704 - Breaking of safety valve seals.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Breaking of safety valve seals. 115.704 Section 115.704... CERTIFICATION Repairs and Alterations § 115.704 Breaking of safety valve seals. The owner, managing operator, or master shall notify the cognizant OCMI as soon as practicable after the seal on a boiler safety valve...

  2. 14 CFR 1221.102 - Establishment of the NASA Seal.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 5 2010-01-01 2010-01-01 false Establishment of the NASA Seal. 1221.102 Section 1221.102 Aeronautics and Space NATIONAL AERONAUTICS AND SPACE ADMINISTRATION THE NASA SEAL AND OTHER DEVICES, AND THE CONGRESSIONAL SPACE MEDAL OF HONOR NASA Seal, NASA Insignia, NASA Logotype,...

  3. 14 CFR 1221.109 - Use of the NASA Seal.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 5 2010-01-01 2010-01-01 false Use of the NASA Seal. 1221.109 Section 1221.109 Aeronautics and Space NATIONAL AERONAUTICS AND SPACE ADMINISTRATION THE NASA SEAL AND OTHER DEVICES, AND THE CONGRESSIONAL SPACE MEDAL OF HONOR NASA Seal, NASA Insignia, NASA Logotype, NASA...

  4. Analyses toward factors influencing sealing clearance of a metal rubber seal and derivation of a calculation formula

    Institute of Scientific and Technical Information of China (English)

    Yan Hui; Zhao Yalei; Liu Jianguo; Jiang Hongyuan

    2016-01-01

    Sealing clearance is a key factor for a metal rubber seal’s sealability. The expansion coef-ficient and expansion deformation in the radial direction of metal rubber have been obtained through a thermal expansion experiment of metal rubber. The influence of the elastic modulus to the sealing clearance has been analyzed theoretically. By combining the temperature and elasticity factors of metal rubber with the elastic mechanics theory, the calculation formula of the sealing clearance has been derived, and the values of the sealing clearance and the leakage rate in certain working conditions have been calculated. Experimental results are consistent with calculation results in a high degree. The calculation formula of the sealing clearance can explain the influences of the temperature and elastic modulus factors of metal rubber on the sealing clearance. It can pro-vide guidance for the study of sealing mechanism of metal rubber seals.

  5. Cookbooks and Caribbean cultural identity : an English-language hors d'oeuvre

    Directory of Open Access Journals (Sweden)

    B.W. Higman

    1998-01-01

    Full Text Available Analysis of 119 English-language cookbooks (1890-1997 published in or having to do with the Caribbean. This study of the history of cookbooks indicates what it means to be Caribbean or to identify with some smaller territory or grouping and how this meaning has changed in response to social and political developments. Concludes that cookbook-writers have not been successful in creating a single account of the Caribbean past or a single, unitary definition of Caribbean cuisine or culture.

  6. Narratives of Return : The Contemporary Caribbean Woman Writer and the Quest for Home.

    OpenAIRE

    Thompson, Rachel Grace

    2015-01-01

    This thesis investigates how diasporic Caribbean women writers use the vehicle of the novel to effect a ‘writing back’ to the Caribbean home through what I propose to consider as a specific sub-genre of Caribbean literature: ‘narratives of return’. I argue that novels which constitute ‘narratives of return’ reveal how diasporic identity continues to be informed by a particularised connection to the Caribbean homeland. Firstly, I propose the region’s literary representation within these narrat...

  7. Exploring the influences on the Caribbean's emerging medical tourism industry

    OpenAIRE

    Johnston, Roderick Neil

    2016-01-01

    Governments and hospitals worldwide have increasingly expressed interest in ‘medical tourism’, where medical treatments are privately purchased by foreign visitors seeking non-emergency care. There is steady discussion worldwide about the development of medical tourism, including countries with volumes of health service exports that are currently very small. Caribbean countries are no exception. In a region not well known for its medical tourism destinations (excepting Cuba and Costa Rica), t...

  8. Saving in Latin America and the Caribbean; Performance and Policies

    OpenAIRE

    Francesco Grigoli; Alexander Herman; Klaus Schmidt-Hebbel

    2015-01-01

    This paper analyzes saving patterns and determinants in Latin America and the Caribbean (LAC), including key policy variables and regimes. The review of previous empirical studies on LAC saving reveals contradictions and omissions. This paper presents empirical results of an extensive search of determinants of private and public saving rates, adding previously neglected variables (including different measures of key external prices and macroeconomic policy regimes), in linear form and in inte...

  9. Parenting and depressive symptoms among adolescents in four Caribbean societies

    OpenAIRE

    Lipps Garth; Lowe Gillian A; Gibson Roger C; Halliday Sharon; Morris Amrie; Clarke Nelson; Wilson Rosemarie N

    2012-01-01

    Abstract Background The strategies that parents use to guide and discipline their children may influence their emotional health. Relatively little research has been conducted examining the association of parenting practices to depressive symptoms among Caribbean adolescents. This project examines the association of parenting styles to levels of depressive symptoms among adolescents in Jamaica, the Bahamas, St. Kitts and Nevis, and St. Vincent. Methods Adolescents attending grade ten of academ...

  10. Different lives: inequality in Latin America and the Caribbean

    OpenAIRE

    Gasparini, Leonardo

    2003-01-01

    This chapter summarizes information on inequality in living standards in Latin American and Caribbean countries. To that aim we work with a sample of more than 50 household surveys from 20 LAC countries from 1989 to 2001, and we survey results from other authors. Although the core of the statistics are on household income inequality, the study also presents information by country/year on inequality in the distribution of earnings, hourly wages, hours, worked, employment, unemployment, child l...

  11. New sciophilous sponges from the Caribbean (Porifera: Demospongiae)

    OpenAIRE

    Van, Soest

    2009-01-01

    Thirteen new species of sponges are described from coral reefs of the Netherlands Antilles and the Colombian Caribbean. Species were collected during quantitative investigations of reef sponges performed by students of the University of Amsterdam in the period between 1984 and 1991. Most of the reported specimens were taken from undersides of coral rubble, crevices or reef caves (sciophilous habitats) and without exception are small encrusting or fistular sponges. The material reported in thi...

  12. Reconstructing the Population Genetic History of the Caribbean

    Science.gov (United States)

    Moreno-Estrada, Andrés; Gravel, Simon; Zakharia, Fouad; McCauley, Jacob L.; Byrnes, Jake K.; Gignoux, Christopher R.; Ortiz-Tello, Patricia A.; Martínez, Ricardo J.; Hedges, Dale J.; Morris, Richard W.; Eng, Celeste; Sandoval, Karla; Acevedo-Acevedo, Suehelay; Norman, Paul J.; Layrisse, Zulay; Parham, Peter; Martínez-Cruzado, Juan Carlos; Burchard, Esteban González; Cuccaro, Michael L.; Martin, Eden R.; Bustamante, Carlos D.

    2013-01-01

    The Caribbean basin is home to some of the most complex interactions in recent history among previously diverged human populations. Here, we investigate the population genetic history of this region by characterizing patterns of genome-wide variation among 330 individuals from three of the Greater Antilles (Cuba, Puerto Rico, Hispaniola), two mainland (Honduras, Colombia), and three Native South American (Yukpa, Bari, and Warao) populations. We combine these data with a unique database of genomic variation in over 3,000 individuals from diverse European, African, and Native American populations. We use local ancestry inference and tract length distributions to test different demographic scenarios for the pre- and post-colonial history of the region. We develop a novel ancestry-specific PCA (ASPCA) method to reconstruct the sub-continental origin of Native American, European, and African haplotypes from admixed genomes. We find that the most likely source of the indigenous ancestry in Caribbean islanders is a Native South American component shared among inland Amazonian tribes, Central America, and the Yucatan peninsula, suggesting extensive gene flow across the Caribbean in pre-Columbian times. We find evidence of two pulses of African migration. The first pulse—which today is reflected by shorter, older ancestry tracts—consists of a genetic component more similar to coastal West African regions involved in early stages of the trans-Atlantic slave trade. The second pulse—reflected by longer, younger tracts—is more similar to present-day West-Central African populations, supporting historical records of later transatlantic deportation. Surprisingly, we also identify a Latino-specific European component that has significantly diverged from its parental Iberian source populations, presumably as a result of small European founder population size. We demonstrate that the ancestral components in admixed genomes can be traced back to distinct sub

  13. Exploring Emotional Intelligence in a Caribbean Medical School

    Science.gov (United States)

    Sa, B; Baboolal, N; Williams, S; Ramsewak, S

    2014-01-01

    Objective: To explore the emotional intelligence (EI) in medical students in a Caribbean medical school and investigate its association with gender, age, year of study and ethnicity. Design and Methods: A cross-sectional design using convenient sampling of 304 years two to five undergraduate medical students at the School of Medicine, The University of the West Indies (UWI), St Augustine campus, was conducted. The Mayer-Salovey-Caruso Emotional Intelligence Test (MSCEIT-V2.0) was administered to test four branches of EI: perceiving emotions, facilitating thought, understanding emotions and managing emotions. Data were analysed using SPSS version 19. T-test, analysis of variance (ANOVA) and r (product moment correlation) were calculated to establish the effects of selected variables (gender, age, year of study and ethnicity) on total and sub-scales EI scores and tested against 0.05 and 0.01 significance levels. Results: The total mean score for EI fell within the average according to MSCEIT standards. Gender analysis showed significantly higher scores for males and for younger age groups (< 25 years). Year of study and ethnicity did not yield any significant effect. Conclusions: These findings of higher EI scores in males and younger students are unusual, given the well-publicized stereotype of the Caribbean male and the perception that advancing age brings maturity and emotional stability. It would be valuable to widen this study by including other UWI campuses and offshore medical schools in the Caribbean. This preliminary study examined a sample of medical students from a well-established Caribbean medical school. Since EI is considered to be important in the assessment and training of medical undergraduates, consideration should be given to introducing interventions aimed at increasing EI. PMID:25303251

  14. Primary care in Caribbean Small Island Developing States

    Directory of Open Access Journals (Sweden)

    J.D. Kranenburg

    2015-05-01

    Full Text Available Caribbean Small Island Developing States (SIDS made good process on improving the health of their populations; but concerns exist when it comes to meeting changing health needs. Due to remoteness and limited resources it is difficult to respond to high rates of non-communicable diseases (NCDs. Furthermore, little is known about how primary care (PC is organised and how this responds to current health issues. This study focused on gaining insights in the organisation of PC of Caribbean SIDS based on currently available literature. This literature review was an explorative multiple case study, where structure of PC and health status of 16 Caribbean SIDS were reviewed using available scientific and grey literature between the years 1997 and 2014. Thirty documents were used to analyse 20 indicators for the dimensions “Structure of Primary Care” and “Health Status”. Results were mapped in order to identify if there is a possible relation between structures of PC to the health of the populations. When reviewing the structure of PC, the majority of information was available for “Economic conditions of PC” (78% and the least information was available for “Governance of PC” (40%. With regards to health status, all islands show improvements on “Life expectancy at birth” since 2007. In contrast, on average, the mortality due to NCDs did not improve. Saint Lucia performs best on “Structure of PC”. The British Virgin Islands have the best health status. When both dimensions were analysed, Saint Lucia performs best. There is still little known on the responsiveness of PC of Caribbean SIDS to NCDs. There is a need for elaborate research on: (1 If and how the functioning of these health systems relate to the health status; (2 What islands can learn from an analysis over time and what they can learn from cross-island analysis; and (3 Filling the gaps of knowledge which currently exist within this field of research.

  15. Integrated Water Resources Management in Latin America and the Caribbean

    OpenAIRE

    Inter-American Development Bank (IDB)

    1998-01-01

    This technical study contains the strategy of the Inter-American Development Bank for its involvement in integrated water resources management in Latin America and the Caribbean. The strategy was developed through an iterative step by step procedure in consultation with country water resource officials, Bank staff, nongovernmental organizations, and international lending and technical assistance organizations. The first part of the study is an overview of water resource management in Latin Am...

  16. Nursing empire: travel letters from Africa and the Caribbean

    OpenAIRE

    Howell, Jessica

    2012-01-01

    This essay analyses colonial nurses’ travel letters, written from West Africa and the Caribbean between the turn of the century and 1920, in order to better understand the role of nurses in forming satellite versions of home. Though their primary function was to ‘nurse empire’ by helping to repair and maintain the bodies needed for imperial labour, nurses also contributed to written discourses supporting Britain's economic interests and political goals. Through careful consideration of primar...

  17. Rapidly spreading seagrass invades the Caribbean with unknown ecological consequences

    Science.gov (United States)

    Rogers, Caroline S.; Willette, Demian A; Miller, Jeff

    2014-01-01

    The non-native seagrass Halophila stipulacea has spread rapidly throughout the Caribbean Sea (Willette et al. 2014); without additional research, the ecological ramifications of this invasion are difficult to predict. Biodiversity, connectivity of marine ecosystems, and recovery of degraded coral reefs could all be affected. The invasive seagrass, native to the Red Sea and Indian Ocean, has taken over sand bottoms and intermixed with or replaced native seagrasses, including Thalassia testudinum, Syringodium filiforme, and Halodule wrightii.

  18. Structural and geophysical interpretation of Roatan Island, Honduras, Western Caribbean

    Science.gov (United States)

    Sutton, Daniel Scott

    Roatan Island is the largest of the Bay Islands of Honduras. These islands form an emergent crest off the Caribbean coast of Honduras called the Bonacca Ridge. The Bartlett Trough to the north and subsequent Bonacca Ridge were likely formed due to the transform fault system of the Motagua-Swan Islands Fault System. This fault system forms the tectonic plate boundary between the North American and Caribbean plates. Although the timing and kinematics are poorly constrained, the Bay Islands and the Bonacca Ridge were likely uplifted due to transpression along this left-lateral strike-slip system. With limited regional exposures along the adjacent tectonic boundary, this study aimed to present a structural interpretation for Roatan. This new interpretation is further explained through regional considerations for a suggested geologic history of the northwestern Caribbean. In order to better constrain the kinematics of uplift and exhumation of Roatan Island, structural, gravity, and magnetic surveys were conducted. Principal attention was directed to the structural relationship between the geologic units and their relationship to one another through deformation. Resulting geologic cross-sections from this study present the metamorphic basement exposed throughout the island to be in a normal structural order consisting of biotite schist and gneiss, with overlying units of chlorite schist, carbonate, and conglomerate. These units have relatively concordant strike and dip measurements, consistent with resultant magnetic survey readings. Additionally, large and irregular bodies of amphibolite and serpentinite throughout the island are interpreted to have been emplaced as mafic and ultra-mafic intrusions in weakness zones along Early Paleogene transform system fault planes. The interpretation and suggested geologic history from this study demonstrate the importance of transpressive tectonics both local to Roatan and regionally throughout geologic history. Consideration of

  19. Chaetognatha of the Caribbean Sea and adjacent areas

    OpenAIRE

    Michel, Harding B.

    1984-01-01

    This illustrated manual is a guide to the distribution and identification of the 6 genera and 28 species of benthic and planktonic Chaetognatha known to occur in the Caribbean Sea, the Gulf of Mexlco, the Florida Straits, and the southwestern North Atlantic Ocean. As background, previous studies of chaetognaths in these areas are reviewed, gross morphology of the different forms is described, and instructions on methods of preserving and handling specimens preparatory to identification are...

  20. Environmental change preceded Caribbean extinction by 2 million years.

    Science.gov (United States)

    O'Dea, Aaron; Jackson, Jeremy B C; Fortunato, Helena; Smith, J Travis; D'Croz, Luis; Johnson, Kenneth G; Todd, Jonathan A

    2007-03-27

    Paleontologists typically treat major episodes of extinction as single and distinct events in which a major environmental perturbation results in a synchronous evolutionary response. Alternatively, the causes of biotic change may be multifaceted and extinction may lag behind the changes ultimately responsible because of nonlinear ecological dynamics. We examined these alternatives for the major episode of Caribbean extinction 2 million years ago (Ma). Isolation of the Caribbean from the Eastern Pacific by uplift of the Panamanian Isthmus was associated with synchronous changes in Caribbean near shore environments and community composition between 4.25 and 3.45 Ma. Seasonal fluctuations in Caribbean seawater temperature decreased 3-fold, carbonate deposition increased, and there was a striking, albeit patchy, shift in dominance of benthic ecosystems from heterotrophic mollusks to mixotrophic reef corals and calcareous algae. All of these changes correspond well with a simple model of decreased upwelling and collapse in planktonic productivity associated with the final stages of the closure of the isthmian barrier. However, extinction rates of mollusks and corals did not increase until 3-2 Ma and sharply peaked between 2 and 1 Ma, even though extinction overwhelmingly affected taxa commonly associated with high productivity. This time lag suggests that something other than environmental change per se was involved in extinction that does not occur as a single event. Understanding cause and effect will require more taxonomically refined analysis of the changing abundance and distribution patterns of different ecological guilds in the 2 million years leading up to the relatively sudden peak in extinction. PMID:17369359

  1. Holocene Caribbean climate variability reconstructed from speleothems from western Cuba

    OpenAIRE

    Fensterer, Claudia

    2011-01-01

    Proxy records o ffer a high potential tool to investigate past climate variability. Stalagmites as a natural archive have the advantage that they are absolutely datable and past changes in precipitation or temperature can be highly resolved by the use of stable isotopes such as d18O and d13C. This study uses three stalagmites from north-western Cuba to investigate past precipitation variability in the Northern Caribbean. The records cover the whole Holocene and reveal variability on several t...

  2. Intimacy’s Politics: New Directions in Caribbean Sexuality Studies

    Directory of Open Access Journals (Sweden)

    Vanessa Agard-Jones

    2011-12-01

    Full Text Available Review of: Pleasures and Perils: Girls’ Sexuality in a Caribbean Consumer Culture. Debra Curtis. New Brunswick NJ: Rutgers University Press, 2009. xii + 222 pp. (Paper US$ 23.95 Economies of Desire: Sex and Tourism in Cuba and the Dominican Republic. Amalia L. Cabezas. Philadelphia PA : Temple University Press, 2009. xii + 218 pp. (Paper US$ 24.95 Queer Ricans: Cultures and Sexualities in the Diaspora. Lawrence La Fountain-Stokes. Minneapolis: University of Minnesota Press, 2009. xxvii + 242 pp. (Paper US$ 22.50 [First paragraph] Over the last ten years the field of Caribbean Studies has seen a precipitous expansion of work on sexualities, as recent review essays by Jenny Sharpe and Samantha Pinto (2006 and Kamala Kempadoo (2009 have observed. The three books under review here, all based on dissertation research and all published in 2009, make important contributions to this growing literature. While each one approaches sexual politics from a distinctive disciplinary, geographic, and theoretical vantage point, all three ask readers to take seriously the central place that sexual desires and practices occupy in the lives of Caribbean people, both at home and in the diaspora. Caribbean sexuality studies are still sometimes thought of as belonging to a domain outside of, or auxiliary to “real” politics, but these studies demonstrate without hesitation how sexuality functions as an important prism through which we might understand broader debates about ethics, politics, and economics in the region. Building from the insights of feminist theorists who connect the “private” realm to community, national, and global geopolitics, they show that sex is intimately connected to certain freedoms – be they market, corporeal, or political – as well as to their consequences. Taken together, they consider sexual subjectivity, political economy, and cultural production in unexpected ways and point to exciting new directions for the

  3. CARIBBEAN OFFSHORE CORPORATE STRUCTURES UNDER A SWOT ANALYSIS

    OpenAIRE

    Ana-Maria GEAMÃNU

    2015-01-01

    Tax havens have long been under the attention of numerous Governments and International Organizations which triggered the concern of an uneven playing field in the taxation area. As a result numerous amendments have been made to both their commercial and tax legislations in order to be in line with the internationally agreed tax standards. The aim of this article is to conduct a SWOT analysis on the offshore corporate structures found in the Caribbean landscape. Based on a selection process o...

  4. Cenozoic Methane-Seep Faunas of the Caribbean Region.

    Directory of Open Access Journals (Sweden)

    Steffen Kiel

    Full Text Available We report new examples of Cenozoic cold-seep communities from Colombia, Cuba, the Dominican Republic, Trinidad, and Venezuela, and attempt to improve the stratigraphic dating of Cenozoic Caribbean seep communities using strontium isotope stratigraphy. Two seep faunas are distinguished in Barbados: the late Eocene mudstone-hosted 'Joes River fauna' consists mainly of large lucinid bivalves and tall abyssochrysoid gastropods, and the early Miocene carbonate-hosted 'Bath Cliffs fauna' containing the vesicomyid Pleurophopsis, the mytilid Bathymodiolus and small gastropods. Two new Oligocene seep communities from the Sinú River basin in Colombia consist of lucinid bivalves including Elongatolucina, thyasirid and solemyid bivalves, and Pleurophopsis. A new early Miocene seep community from Cuba includes Pleurophopsis and the large lucinid Meganodontia. Strontium isotope stratigraphy suggests an Eocene age for the Cuban Elmira asphalt mine seep community, making it the oldest in the Caribbean region. A new basal Pliocene seep fauna from the Dominican Republic is characterized by the large lucinid Anodontia (Pegophysema. In Trinidad we distinguish two types of seep faunas: the mudstone-hosted Godineau River fauna consisting mainly of lucinid bivalves, and the limestone-hosted Freeman's Bay fauna consisting chiefly of Pleurophopsis, Bathymodiolus, and small gastropods; they are all dated as late Miocene. Four new seep communities of Oligocene to Miocene age are reported from Venezuela. They consist mainly of large globular lucinid bivalves including Meganodontia, and moderately sized vesicomyid bivalves. After the late Miocene many large and typical 'Cenozoic' lucinid genera disappeared from the Caribbean seeps and are today known only from the central Indo-Pacific Ocean. We speculate that the increasingly oligotrophic conditions in the Caribbean Sea after the closure of the Isthmus of Panama in the Pliocene may have been unfavorable for such large

  5. Sealed source dismantling hot cell - startup

    Energy Technology Data Exchange (ETDEWEB)

    Dellamano, Jose Claudio; Ferreira, Robson de Jesus, E-mail: jcdellam@ipen.br, E-mail: rojefer@ipen.br [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil). Gerencia de Rejeitos radioativos

    2013-07-01

    Sealed radioactive sources are widely used in many applications of nuclear technology and at the end of the useful life, most sources become radioactive waste. In Brazil, this waste is received by the Institutes of the National Nuclear Energy Commission and kept under centralized storage. The Waste Management Department at the Nuclear and Energy Research Institute is the main storage center, having received around 20,000 disused sources. A hot cell was designed and constructed to manage Co-60 spent sealed sources with activity up to 3.7 10{sup 1}0 Bq and other sources with equivalent activities. In the hot cell the sources are withdraw from their original shielding and transferred to a standard shielding for further disposal off. The original shielding disassembling is made outside the hot cell and after opening, it is transferred inside the hot cell and the sealed source is removed remotely. The source is checked in relation to external contamination and its activity is checked. After this, the source is positioned in the standard shielding located inside an overpack at the bottom of the hot cell. This paper describes some pre-operational tests carried out in it, that include: opening and closing doors and locks, checking of all electrical and pneumatic controls, the original shielding movement inside the hot-cell, dose rate measurements outside the hot-cell, insertion of the sealed sources inside the activity meter chamber, transferring the sealed source to the standard shielding, movement of the overpack with the standard shielding to outside of the hot-cell and plugging of the standard shielding. (author)

  6. Reactor coolant pump seal related instrumentation and operator response: An evaluation of adequacy to anticipate potential seal failures

    International Nuclear Information System (INIS)

    This report provides an evaluation of the adequacy of reactor coolant pump (RCP) seal related instrumentation and associated operator responses to anticipate potential seal failure. Information was obtained directly from RCP manufacturers and nuclear steam supply system vendors and indirectly through analysis of failure data. The concept of a seal failure criterion is presented and explained as a diagnostic approach to the detection of incipient seal failure. Recommendations are provided for instrumentation, operator response-procedures and automatic actions

  7. Caribbean coral growth influenced by anthropogenic aerosol emissions

    Science.gov (United States)

    Kwiatkowski, Lester; Cox, Peter M.; Economou, Theo; Halloran, Paul R.; Mumby, Peter J.; Booth, Ben B. B.; Carilli, Jessica; Guzman, Hector M.

    2013-05-01

    Coral growth rates are highly dependent on environmental variables such as sea surface temperature and solar irradiance. Multi-decadal variability in coral growth rates has been documented throughout the Caribbean over the past 150-200 years, and linked to variations in Atlantic sea surface temperatures. Multi-decadal variability in sea surface temperatures in the North Atlantic, in turn, has been linked to volcanic and anthropogenic aerosol forcing. Here, we examine the drivers of changes in coral growth rates in the western Caribbean between 1880 and 2000, using previously published coral growth chronologies from two sites in the region, and a numerical model. Changes in coral growth rates over this period coincided with variations in sea surface temperature and incoming short-wave radiation. Our model simulations show that variations in the concentration of anthropogenic aerosols caused variations in sea surface temperature and incoming radiation in the second half of the twentieth century. Before this, variations in volcanic aerosols may have played a more important role. With the exception of extreme mass bleaching events, we suggest that neither climate change from greenhouse-gas emissions nor ocean acidification is necessarily the driver of multi-decadal variations in growth rates at some Caribbean locations. Rather, the cause may be regional climate change due to volcanic and anthropogenic aerosol emissions.

  8. Saharan dust, climate variability, and asthma in Grenada, the Caribbean

    Science.gov (United States)

    Akpinar-Elci, Muge; Martin, Francis E.; Behr, Joshua G.; Diaz, Rafael

    2015-11-01

    Saharan dust is transported across the Atlantic and interacts with the Caribbean seasonal climatic conditions, becoming respirable and contributing to asthma presentments at the emergency department. This study investigated the relationships among dust, climatic variables, and asthma-related visits to the emergency room in Grenada. All asthma visits to the emergency room ( n = 4411) over 5 years (2001-2005) were compared to the dust cover and climatic variables for the corresponding period. Variation in asthma was associated with change in dust concentration ( R 2 = 0.036, p population sizes, industrialization level, and economies. Therefore, different than from the studies in Trinidad and Barbados, Grenada is a non-industrialized low-income small island without major industrialized air pollution addition; asthma visits were inversely related to mean sea level pressure ( R 2 = 0.123, p = 0.006) and positively correlated with relative humidity ( R 2 = 0.593, p = 0.85). Saharan dust in conjunction with seasonal humidity allows for inhalable particulate matter that exacerbates asthma among residents in the Caribbean island of Grenada. These findings contribute evidence suggesting a broader public health impact from Saharan dust. Thus, this research may inform strategic planning of resource allocation among the Caribbean public health agencies.

  9. Latin American and Caribbean Federation of Radiation Protection Societies (FRALC)

    International Nuclear Information System (INIS)

    The idea of a Federation of Radiation Protection Societies in Latin America came up at the First Regional Congress on Radiation Protection and Nuclear Safety that was held in Buenos Aires (Argentina), in October 1991. At the Second Regional Congress, in Zacatecas (Mexico), in 1993, the Latin American and Caribbean Federation of Radiation Protection Societies (FRALC) was officially launched. The founder members were the Argentine Radiation Protection Society (SAR), the Brazilian Radiation Protection Society (SBPR), the Mexican Radiation Safety Society (SMSR) and the Peruvian Radiation Protection Society (SPR). Now, the FRALC has accepted as members the Radiation Protection Section of the Cuban Physics Society (SPRC) and the Uruguayan Radiation Protection Association (AUR). The basic objectives of the FRALC are: to promote the safe use of radiation and radioactive sources in Latin America and the Caribbean; to promote the foundation of new Radiation Protection Societies within the region, as mean of associating radiation protection professionals, and then, to promote of affiliation of this new societies to IRPA; to encourage the cooperation and mutual aid in the study, research and use of resources, in order to promote the radiation protection development in Latin America and the Caribbean

  10. Renewable power production in a Pan-Caribbean energy grid

    Science.gov (United States)

    Miller, David

    The Small Island Developing States of the Caribbean are victims of geography and geopolitics. Lacking access to large fossil fuel reserves, they are forced to import fuel at prices they have no control over. Renewable energy resources, particularly wind, have the potential to help break the Caribbean dependency on fossil fuels and allow for increased development at the same time. Working from a sustainable development point of view, this project discusses the history of the area, the theoretical background for the idea of large scale renewable power production, the regional initiatives already in place that address both the cost of fossil fuels and the policy hurdles that need to be overcome to assist the region in gaining energy independence. Haiti is highlighted as a special case in the region and the potential use of several renewable resources are discussed, along with a potential business model based on the idea of the Internet. Power storage is covered, specifically the potential of battery operated vehicles to have a positive impact on the Caribbean region and other developing states. The role of government regulation and policy comes into play next, followed by a discussion on the need for developed states to change patterns of behavior in order to achieve sustainability. Finally, nuclear power and liquefied natural gas are reviewed and rejected as power options for the region.

  11. Annotated bibliography of coal in the Caribbean region. [Lignite

    Energy Technology Data Exchange (ETDEWEB)

    Orndorff, R.C.

    1985-01-01

    The purpose of preparing this annotated bibliography was to compile information on coal localities for the Caribbean region used for preparation of a coal map of the region. Also, it serves as a brief reference list of publications for future coal studies in the Caribbean region. It is in no way an exhaustive study or complete listing of coal literature for the Caribbean. All the material was gathered from published literature with the exception of information from Cuba which was supplied from a study by Gordon Wood of the US Geological Survey, Branch of Coal Resources. Following the classification system of the US Geological Survey (Wood and others, 1983), the term coal resources has been used in this report for reference to general estimates of coal quantities even though authors of the material being annotated may have used the term coal reserves in a similar denotation. The literature ranges from 1857 to 1981. The countries listed include Colombia, Mexico, Venezuela, Cuba, the Dominican Republic, Haiti, Jamaica, Puerto Rico, and the countries of Central America.

  12. TSUNAMI HAZARD AND TOTAL RISK IN THE CARIBBEAN BASIN

    Directory of Open Access Journals (Sweden)

    X. William Proenza

    2010-01-01

    Full Text Available Deadly western North Atlantic Ocean tsunami events in the last centuries have occurred along the east coast of Canada, the United States, most Caribbean islands, and the North Atlantic Coast of South America. The catastrophic Indian Ocean tsunami of 2004 reminded natural hazards managers that tsunami risk is endemic to all oceans. Total Risk is defined as hazard (frequency of tsunami events times measures of elements at risk (human exposure times measures of vulnerability (preparedness in a given epoch (Nott, 2006. While the tsunami hazard in the Caribbean (averaging 19 ± 22 years between deadly events is lower than Pacific coastal areas, the total risk to life and property is at least as high as the USA West Coast, Hawaii, or Alaska, because of the higher Caribbean population density and beach tourism so attractive to more than 35 million visitors a year. Viewed in this light, the allocation of resources by governments, industry, and insurers needs to be adjusted for the better protection of life, for coastal engineering, and for infrastructure.

  13. Coastal erosion: Coast problem of the Colombian Caribbean

    International Nuclear Information System (INIS)

    The erosion promoted by the sea, affects different sectors of the coast of the Colombian Caribbean. The erosion is particularly clear in the central and western sector of the coast. The coastal problem of Punta Sabanilla - Puerto Salgar - Puerto Colombia; Pueblo Nuevo - Lomarena; Manzanillo del Mar; La Boquilla; sector Tolu - Covenas and Arboletes areas are described. This discussion is presented comform to the data obtained in field and of the revision of maps, pictures and other documents related with the coast design. The coastal erosion is not only affecting to low areas conformed by beaches, but rather this phenomenon impacts on rocky cliffs of different elevation; it is the case of El Castillo and Punta Sabanilla to Barranquilla (west Part) sectors . The causes of the setback that it experiences the coast of the Colombian Caribbean are not known in clear form; however they can be contributing such factors as: the elevation of the sea level, phenomenon that has been checked in different costs of the world; equally it can be due to a decrease in the volume of silts contributed by the Magdalena River, inside the coastal area. A third factor would be related with the diapirism of mud, that possibly would be altering the conformation of the Caribbean littoral

  14. Investigation of brush seals for application in steam turbines

    International Nuclear Information System (INIS)

    Brush seals have high potential for efficiency increase compared to conventional labyrinth seals in steam turbines. Due to less experience in operation today there is a lot of scepticism with customers of steam turbine manufacturers. Therefore this thesis is investigating characteristics of this type of seal. Experiments and numerical models will be presented, which lead to better knowledge about leakages and influence of flow through seal onto dynamics of rotor in comparison to labyrinth seals. This thesis is increasing area of experience and one more positive reference.

  15. Lubricantless piston rod seals for pressures up to 18 MPa

    Energy Technology Data Exchange (ETDEWEB)

    Zakharenko, V.P.; Novikov, I.I.

    1984-03-01

    This article describes how seals for piston rods with flat packings are used in compressors for compressing gases without contaminating liquid lubricants. The use of nonmetallic self-lubricating materials and special seal designs of piston rods and plungers allow the dry running of compressors. Compositions based on fluorinol-4 greatly enlarge the range of operational parameters of lubricantless seals. Polyamide ATM-2 is highly efficient as lubricant seals of low-pressure compressor piston rods. Technological and operating advantages of lubricantless seals with flat rings include the design simplicity, the high gas tightness throughout the run between the repairs, reliability, and prolonged efficiency.

  16. Nonlinear Finite Element Analysis of the Structure of Door Seals

    Institute of Scientific and Technical Information of China (English)

    ZHAO Jian-cai; ZHU Xun-sheng; ZHOU Chi-xing

    2005-01-01

    In order to evaluate the influence of the seal structure on door closing force, nonlinear finite element method is introduced to analyze compression deformation of a door seal for SANTANA (name of the car made by Shanghai Volkswagen Co. Ltd). MSC. Marc software is used to analyze the large deformation of the seal and the compression test is done to prove the computational results. The results show that the compression loads of the door seal are larger than the standard value of Shanghai Volkswagen Co. Ltd and the seal structure needs to be optimized. There are consistent relationships between calculating results and experimental results and the simulation method is effective.

  17. Strengthening integrated research and capacity development within the Caribbean region

    Directory of Open Access Journals (Sweden)

    Dewailly Eric

    2011-11-01

    Full Text Available Abstract Background The Caribbean region, like other developing regions of the world, faces significant challenges in conducting research, especially in the context of limited resource capacities and capabilities. Further, due to its diverse and multiple island states, research capacity is scattered and unevenly spread within the region. The Caribbean EcoHealth Programme (CEHP is a research program that is structured to improve the capacity and capability of health professionals in the Caribbean region to respond in integrative and innovative ways to on-going and emerging environmental health challenges by means of multi-sectoral interventions. Methods Core parts of the CEHP’s mission are to (1 conduct collaborative research in areas that the region has identified as critical; (2 build and strengthening integrated approaches to research; and (3 develop and enhance basic research capacity within the Caribbean region. Fundamental to the success of the CEHP’s human and resource development mission has been its use of the Atlantis Mobile Laboratory (AML. The AML has allowed the CEHP program to move throughout the Caribbean and be able to respond to calls for specific research and capacity building opportunities. Results The CEHP’s five main research projects have generated the following results: (1 the Persistent Organic Pollutants (POPs study has evaluated human exposures to POPs, heavy metals, pesticides, and zoonotic infections; (2 the Burden of Illness (BOI studies have developed protocols for the testing of foodborne microorganisms, strengthen laboratory analytical capabilities, and determined the prevalence and incidence of food-borne illness; (3 the Rainwater Harvesting (RWH study has evaluated the microbial and chemical quality of rainwater harvesting systems; (4 the Ecotoxicology Water (ETW studies have provided much needed data on the quality of recreational and drinking water supplies, and (5 the Food Safety Training Program has

  18. Tectonic evolution and mantle structure of the Caribbean

    Science.gov (United States)

    Benthem, Steven; Govers, Rob; Spakman, Wim; Wortel, Rinus

    2013-06-01

    investigate whether predictions of mantle structure from tectonic reconstructions are in agreement with a detailed tomographic image of seismic P wave velocity structure under the Caribbean region. In the upper mantle, positive seismic anomalies are imaged under the Lesser Antilles and Puerto Rico. These anomalies are interpreted as remnants of Atlantic lithosphere subduction and confirm tectonic reconstructions that suggest at least 1100 km of convergence at the Lesser Antilles island arc during the past ~45 Myr. The imaged Lesser Antilles slab consists of a northern and southern anomaly, separated by a low-velocity anomaly across most of the upper mantle, which we interpret as the subducted North America-South America plate boundary. The southern edge of the imaged Lesser Antilles slab agrees with vertical tearing of South America lithosphere. The northern Lesser Antilles slab is continuous with the Puerto Rico slab along the northeastern plate boundary. This results in an amphitheater-shaped slab, and it is interpreted as westward subducting North America lithosphere that remained attached to the surface along the northeastern boundary of the Caribbean plate. At the Muertos Trough, however, material is imaged until a depth of only 100 km, suggesting a small amount of subduction. The location and length of the imaged South Caribbean slab agrees with proposed subduction of Caribbean lithosphere under the northern South America plate. An anomaly related to proposed Oligocene subduction at the Nicaragua rise is absent in the tomographic model. Beneath Panama, a subduction window exists across the upper mantle, which is related to the cessation of subduction of the Nazca plate under Panama since 9.5 Ma and possibly the preceding subduction of the extinct Cocos-Nazca spreading center. In the lower mantle, two large anomaly patterns are imaged. The westernmost anomaly agrees with the subduction of Farallon lithosphere. The second lower mantle anomaly is found east of

  19. Vertical distribution of CCN properties in the Caribbean during SALTRACE

    Science.gov (United States)

    Dollner, Maximilian; Weinzierl, Bernadett; Walser, Adrian; Kristensen, Thomas; Groß, Silke; Chouza, Fernando; Freudenthaler, Volker; Schäfler, Andreas; Sauer, Daniel; Kujukovic, Melanie

    2015-04-01

    Mineral dust is an important component of the atmosphere and the climate system since mineral dust acts as cloud condensation nuclei (CCN) as well as ice nuclei (IN) and contributes significantly to the global annual particle emissions by mass. Every year, huge amounts of Saharan mineral dust is transported westward across the Atlantic Ocean into the Caribbean. During transport, the chemical and microphysical properties of the mineral dust may be modified thereby changing the CCN properties of the dust aerosol. During the Saharan Aerosol Long-range Transport and Aerosol-Cloud-Interaction Experiment (SALTRACE: http://www.pa.op.dlr.de/saltrace) in June/July 2013, CCN measurements were performed on the DLR Falcon research aircraft with a dual column Cloud Condensation Nuclei Counter (CCNC) first at Cape Verde then at the Caribbean. The CCNC provides information about concentration of CCN at two different supersaturations at the same time. For SALTRACE, one column of the CCNC was set to 0.2% supersaturation, whereas the second column was operated in scanning mode at different supersaturations between 0.1 and 0.5%. Additional CCN measurements by a ground-based single column CCNC were performed at Ragged Point, Barbados. During SALTRACE five mineral dust outbreaks were investigated. The CCN measurements in the Caribbean showed three layers with different CCN characteristics during these outbreaks. In the upper part (2.5 to 4.5 km) of the Saharan Air Layer (SAL) in the Caribbean the aerosol properties are similar to the ones measured in the dust layer over Cape Verde and the CCNC measurements show low CCN concentrations and little activated fraction. In contrast, a higher variability was detected in the lower part (0.7 to 2.5 km) of the SAL. Within this layer a much higher CCN activation leads to a larger CCN concentration and cumulus clouds were frequently observed. Below 0.7 km also a high variability in activated fraction was observed, but CCN concentration was lower

  20. Eradication of the tropical bont tick in the Caribbean: is the Caribbean amblyomma program in a crisis?

    Science.gov (United States)

    Pegram, Rupert G; Gersabeck, Edward F; Wilson, David; Hansen, Jorgen W

    2002-10-01

    The progress and problems in the Caribbean Amblyomma Program (CAP) are reviewed since its inception in 1995. During 1998, there were funding and administrative management problems. USDA resolved the acute funding crisis, and after three years of negotiation, the CAP has now secured an additional euro 1.5 million from the European Community. Changes in administration in 1998 included the withdrawal of IICA from the program, and the transition during the decentralization of administrative and financial management from FAO headquarters to the Regional Office for Latin America and the Caribbean, based in Chile. A general overview of technical progress and one case study, St. Kitts, is presented. One major concern that emerged during 2000 is that the elimination of the small remaining tropical bont tick (TBT) "hot spots" in both St. Kitts and St. Lucia remained elusive. Why is this so? Egrets? Alternative residual hosts? Or is it fatigue in both technical and administrative management functions? Of even greater concern is the finding of two, apparently new, foci in St. Croix (USVI) in the north and St. Vincent in the south. A critical overview of the program has identified one major remaining constraint-an appropriate management support function at both regional and, in some countries, at the national level. A proposal for a revised management strategy, coupled with the identification of a future strategy to succeed the CAP, namely a Caribbean Animal Resources Management (CARM) Program. PMID:12381609

  1. Coral Research Data from NOAA's Undersea Research Center, Caribbean Marine Research Center, NOAA's Undersea Research Program (NURP)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA's National Undersea Research Center for the Caribbean Marine Research Center, Perry Institure for Marine Science, for the Caribbean region explores and studies...

  2. Method of making hermetic seals for hermetic terminal assemblies

    Science.gov (United States)

    Hsu, John S.; Marlino, Laura D.; Ayers, Curtis W.

    2010-04-13

    This invention teaches methods of making a hermetic terminal assembly comprising the steps of: inserting temporary stops, shims and jigs on the bottom face of a terminal assembly thereby blocking assembly core open passageways; mounting the terminal assembly inside a vacuum chamber using a temporary assembly perimeter seal and flange or threaded assembly interfaces; mixing a seal admixture and hardener in a mixer conveyor to form a polymer seal material; conveying the polymer seal material into a polymer reservoir; feeding the polymer seal material from the reservoir through a polymer outlet valve and at least one polymer outlet tube into the terminal assembly core thereby filling interstitial spaces in the core adjacent to service conduits, temporary stop, and the terminal assembly casing; drying the polymer seal material at room temperature thereby hermetically sealing the core of the terminal assembly; removing the terminal assembly from the vacuum chamber, and; removing the temporary stops, shims.

  3. Apparatus and method for inspecting a sealed container

    Science.gov (United States)

    Harmon, J Frank [Pocatello, ID; Jones, James L [Idaho Falls, ID; Hunt, Alan W [Pocatello, ID; Spaulding, Randy J [Pocatello, ID; Smith, Michael [Phoenix, AZ

    2009-03-24

    An apparatus for inspecting a sealed container is disclosed and which includes a pulsed electron accelerator which is positioned in spaced relation relative to a first side of the sealed container, and which produces a pulsed beam of photons which passes through the sealed container and any contents enclosed within the sealed container; a detector positioned in spaced relation relative to a second, opposite side of the sealed container, and which receives the pulsed beam of photons which passes through the contents of the sealed container, and which produces an output signal; and a computer for developing a visible image from the output signal of the detector which depicts the contents of the sealed container.

  4. Research on the Reciprocating Sealing of Fracturing Pump

    Directory of Open Access Journals (Sweden)

    HeShun Wang

    2012-07-01

    Full Text Available The failure reasons of reciprocating sealing in OPI-1800AWS fracturing pump is analyzed by scanning electron microscope technology (SEMT. The lubrication mechanism of plunger seal friction pair is analyzed by hydrodynamic lubrication theory. During its discharge and suction stroke, the reciprocating sealing friction pair meets the conditions of hydrodynamic lubrication, a certain thickness of oil film can be formed and maintained between the plunger and V-shaped sealing interface, which can lubricate sealing pair, reduce friction and improve lifetime. The axial pressure distribution of the V-shaped sealing are carried out by theoretical analysis and experimental testing. According to the distribution curve of axial pressure, the V-shaped sealing failure and the determination of the number of loops are discussed.

  5. Dimensional Analysis on Resistance Characteristics of Labyrinth Seals

    Institute of Scientific and Technical Information of China (English)

    HU Dongxu; JIA Li; YANG Lixin

    2014-01-01

    Experimental investigation of stepped and straight-through labyrinth seals was designed to study the sealing performance of two different typical labyrinth seals.In order to facilitate dimensional analysis on the flow resistance characteristics of labyrinth seals,the variable cross-section of the flow channels are considered as constant cross-section flow.The mechanical energy loss of flow caused by throttle turbulence intensity is considered as caused by friction along the way.The friction coefficient of stepped labyrinth seals is bigger than that of straight-through labyrinth seals by more than 40% for the same Reynolds number and the ratio of equivalent diameter and the seal length.The expression of friction coefficient f and fRe are obtained from experimental data.The verifications indicate that the expressions are highly accurate.The contribution to the total pressure drop of each tooth cavity gradually becomes less along the flow direction.

  6. Low torque hydrodynamic lip geometry for rotary seals

    Science.gov (United States)

    Dietle, Lannie L.; Schroeder, John E.

    2015-07-21

    A hydrodynamically lubricating geometry for the generally circular dynamic sealing lip of rotary seals that are employed to partition a lubricant from an environment. The dynamic sealing lip is provided for establishing compressed sealing engagement with a relatively rotatable surface, and for wedging a film of lubricating fluid into the interface between the dynamic sealing lip and the relatively rotatable surface in response to relative rotation that may occur in the clockwise or the counter-clockwise direction. A wave form incorporating an elongated dimple provides the gradual convergence, efficient impingement angle, and gradual interfacial contact pressure rise that are conducive to efficient hydrodynamic wedging. Skewed elevated contact pressure zones produced by compression edge effects provide for controlled lubricant movement within the dynamic sealing interface between the seal and the relatively rotatable surface, producing enhanced lubrication and low running torque.

  7. Another Side of Monks in Song Dynasty from the View of Yi Jian Zhi%《夷坚志》所见宋代僧道的另一面(下)

    Institute of Scientific and Technical Information of China (English)

    刘树友

    2016-01-01

    The inclusive and flexible religious cultural policy, an equal approach to Confucianism, Buddhism and Taoism pur-sued by the Southern and Northern Song dynasties, along with the social great changes flourishing commodity economy had great effects on Buddhism, Taoism and their followers. More and more monks in Song Dynasty went after the earthly life which became their value orientation. They were crazy about money and infatuated with women. The secularization, another side of monks in Song Dynasty, was made public in Yi Jian Zhi by Hong Mai, a giant of literature in the Southern Song dynasty. These monks did their businesses, accumulated wealth wantonly by illegal means and defrauded people of money, which was in compatible with the rules and creeds of Buddhism and Taoism. As a result, it developed into a serious problem endangering the secular world.%由于两宋政府奉行包容宽松的儒、道、佛三教并举的宗教文化政策,辅之以社会的剧烈变迁及商品经济的高度繁荣,极大地影响、冲击着宋代的佛教及佛教徒、道教及道教徒,不仅促使僧道这一特殊社会群体恶性膨胀,而且宋代僧道已由超然尘俗之外、不食人间烟火的宗教徒日益向世俗化方面转化。热衷钱财,迷恋声色,贪图享乐,追求世俗生活,越来越成为宋代众多僧道的价值取向,并日益外化于其日常言行中。南宋文坛巨擘洪迈独撰的志怪小说集《夷坚志》,就大量披露了宋代僧道的另一面,亦即世俗化的一面:经营产业,大肆敛财,诈骗钱财等,与佛教、道教的教规教义与禁律戒条以及佛道徒的特质格格不入,进而演变成为危害世俗社会的严重问题。

  8. The CANDU irradiated fuel safeguards sealing system at the threshold of implementation

    International Nuclear Information System (INIS)

    The development of a safeguards containment and surveillance system for the irradiated fuel discharged from CANDU nuclear generating stations has inspired the development of three different sealing technologies. Each seal type utilizes a random seal identity of different design. The AECL Random Coil (ARC) Seal combines the identity and integrity elements in the ultrasonic signature of a wire coil. Two variants of an optical seal have been developed which features identity elements of crystalline zirconium and aluminum. The sealed cap-seal uses a conventional IAEA 'Type X Seal' (wire seal). The essential features and relative merits of each seal design are described

  9. Glass-ceramic composition for hermetic seals

    Science.gov (United States)

    Ballard, Jr., Clifford P.

    1979-01-01

    The invention relates to a glass-ceramic composition having a high fracture strength adaptable for hermetically sealing to chromium bearing iron or nickel base alloys at temperatures of between about 950.degree. C to about 1100.degree. C to form a hermetically sealed insulator body, comprising from about 55 to about 65 weight percent SiO.sub.2, from about 0 to about 5 weight percent Al.sub.2 O.sub.3, from about 6 to about 11 weight % Li.sub.2 O, from about 25 to about 32 weight percent BaO, from about 0.5 to about 1.0 weight percent CoO and from about 1.5 to about 3.5 weight percent P.sub.2 O.sub.5.

  10. Inflatable bag with sealing and protection layer

    International Nuclear Information System (INIS)

    The inflatable bag consists of a textile casing in which a cylindrical pvc tyre with concave bottoms is inserted and glued to the casing. A sealing protective layer is provided on the outer periphery of the cylindrical part of the tyre. A tyre valve with flange and fixing ears and also a relief valve are provided in the concave bottom. The casing material, such as a layer of 0.5 to 5 mm silicone rubber bands is suitable for use in contact with austenitic materials. The bag completely seals spaces such as the mouths of steam generator tubes or collector branches in a nuclear power plant. Decontamination can easily be achieved by rinsing the surface with common means. (J.B.). 2 figs

  11. Nanocrystalline diamond coatings for mechanical seals applications.

    Science.gov (United States)

    Santos, J A; Neto, V F; Ruch, D; Grácio, J

    2012-08-01

    A mechanical seal is a type of seal used in rotating equipment, such as pumps and compressors. It consists of a mechanism that assists the connection of the rotating shaft to the housings of the equipments, preventing leakage or avoiding contamination. A common cause of failure of these devices is end face wear out, thus the use of a hard, smooth and wear resistant coating such as nanocrystalline diamond would be of great importance to improve their working performance and increase their lifetime. In this paper, different diamond coatings were deposited by the HFCVD process, using different deposition conditions. Additionally, the as-grown films were characterized for, quality, morphology and microstructure using scanning electron microscopy (SEM) and Raman spectroscopy. The topography and the roughness of the films were characterized by atomic force microscopy (AFM). PMID:22962831

  12. Seal imprint recognition with joint transform correlators

    Science.gov (United States)

    Chen, Chulung; Fang, Jian-Shuen

    2000-10-01

    In many commercial applications in Chinese society, seals instead of signatures for person identification are widely used, such as money withdrawing lists, checks, receipts, etc. It needs high rate of correctness. However, it can not be effective if the process of safety validation is inspected merely by human eyes. Also, for safe control and management, in addition to the potential human cheating act, there is also a possible error due to human neglect. Based on the constrained energy minimization joint transform correlator (CEMJTC), we have proposed a prototype Chinese seal recognition system, which combines the advantage of light speed and programmability of computer. The CEM filter designed for optical correlator has the desirable property of sharp peak with low sidelobes levels in the output correlation plane. Th major advantages of the system are alignment simplicity, rotation invariant capability, high discrimination capability and suitability for hybrid optical signal processing.

  13. Seal Structure of Vacuum System for CSR

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    To reach the design parameter of CSR, vacuum system (≤3.5x10~(-9) Pa), besides the high requirement for quality of the material and vacuum sanitation of the vacuum cells, the seal function is the most important. All cells of vacuum system for CSR are limited by the situations and rooms of gap of magnets, radio frequency system, diagnostic devices and others, and must meet the assemble and disassemble requirements of every devices.

  14. CENTRIFUGAL PUMP AND SHAFT SEALING MEANS

    Science.gov (United States)

    Rushing, F.C.

    1960-09-01

    A description is given of sealing means between a hollow rotatable shaft and a stationary member surrounding the shaft which defines therewith a sealing space of annular cross-section, comprising a plurality of axially spaced rings held against seats by ring springs which serve to subdivide the sealing space- into a plurality of zones. Process gas introduced into the hollow shaft through a port communicating with a centrally located zone which iu turn communicates with a bore in the sleeve, is removed from the shaft through a second port communicating with an adjacent central zone and discharged through a second bore. A sealant gas is supplied to an end zone under a pressure sufficient to cause it to flow axially into adjacent zones and then maintained at a lower pressure than either the sealant gas source or the process gas inlet zone, preventing the sealant gas from entering the shaft and allowing gases leaking into the sealant gas to be withdrawn and led to a separator.

  15. Sealing analysis for nuclear vessel of PWR

    International Nuclear Information System (INIS)

    Although design by analysis of pressure vessel has become a requirement in all codes for more than 20 years, sealing design for nuclear components is still too complicated and there are yet no criteria about this aspect, even though in the well-known ASME Boiler and Pressure Vessel Code. Thus it is of significance to undertake researches of transient sealing tests and analysis for nuclear vessel. Since 1960s great progress has been made in analytic computer program, which takes flange as a rigid ring. Actually, however, there are elastic or elastoplastic contacts on flange mating surface. Chen (1979) gave a mixed finite element method, using a condensing flexible matrix skill, to solve two-body contact problem. On the basis of axisymmetric stress and thermal analysis of finite element method and on accepting Chen's (1979) idea of mixed finite element method, we have developed a computer program for sealing analysis, named SMEC, which considers bolt loading changes and temperature effects. (orig./GL)

  16. ESDRED Temporary Sealing Technology Final Technical Report

    International Nuclear Information System (INIS)

    The work in the ESDRED In te grated Project Module 4, Temporary Sealing (using low pH cement) Technology, consisted first of designing a low pH cement formulation and then of preparing several concrete designs suitable for the construction of sealing plugs and for rock support using shot crete techniques. Regarding sealing plugs, a short plug was constructed at Aspo in Sweden and it was very quickly loaded to failure i.e. slippage by applying water pressure to one face. A second, full scale plug was subsequently constructed at Grimsel test site in Switzerland. It was loaded using the swelling pressure created by bentonite blocks which were artificially hydrated. At time of writing the targeted pressure on the plug was not reached. As the saturation of the bentonite is taking longer than expected the partners involved agreed to continue with the saturation of the bentonite blocks and the related data monitoring beyond the ESDRED Project. The studies on low-pH shot crete for rock sup port were based on available recipes of low-pH concrete mixtures for use in a repository. Pilot and full scale tests were carried out in Sweden and in Switzerland. (Author) 5 refs

  17. Second Forum on China-Latin America and Caribbean People-to-People Friendship

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    <正>The Second Forum on China-Latin American and Caribbean People -to-People Friendship,jointly sponsored by the CPAFFC and the Latin America and Caribbean Federation of Friendship with China(LACFFC), was held in the Cuban capital Havana from October 29 to 30,2009. Over 80 representatives from 26 friendship-with-China organizations

  18. Functional Patterns in International Organizations for University Cooperation in Latin America and the Caribbean

    Science.gov (United States)

    Lopez, Daniel A.; Lopez, Daniel C.; Andrade, Lorenzo I.; Lopez, Boris A.

    2011-01-01

    This study analyzes the coverage, organizational patterns, problems and trends of international organizations for university cooperation in Latin America and the Caribbean. More than 30 international organizations for cooperation currently operating in Latin America and the Caribbean were identified. Two groups of institutions with more than 60%…

  19. Intercultural-Bilingual Education for an Interethnic-Plurilingual Society? The Case of Nicaragua's Caribbean Coast.

    Science.gov (United States)

    Freeland, Jane

    2003-01-01

    Latin American models of "intercultural-bilingual" education may be inappropriate for multilingual, interethnic regions such as Nicaragua's Caribbean Coast, where five indigenous and Afro-Caribbean minorities interact in overlapping territories. Examination of one such program and of Coast people's complex linguistic and cultural practices…

  20. International Symposium on Composers of African and Afro-Caribbean descent: Veni, vidi, vici

    Directory of Open Access Journals (Sweden)

    Shaw, Paul

    2013-12-01

    Full Text Available Sharing a history similar to that of its Caribbean neighbours, yet endowed with greater economic and logistic liquidity, Nassau, The Bahamas’ capital city (on the island of New Providence, seemed the best venue for the first International Symposium on Composers of African & Afro-Caribbean Descent, held on February 21, 2013.

  1. Preliminary overview of exotic and invasive marine species in the Dutch Caribbean

    NARCIS (Netherlands)

    Debrot, A.O.; Buurt, van G.; Vermeij, J.A.

    2011-01-01

    The marine exotic species of the Dutch Caribbean are less well-known than its terrestrial exotics. So far, only 27 known or suspected marine exotic species, some of which are also invasive are documented for one or more islands of the Dutch Caribbean. Four of these were documented only once or were

  2. Caribbean Immigration to the United States. RIIES Occasional Papers No. 1. Second Printing.

    Science.gov (United States)

    Bryce-Laporte, Roy S., Ed.; Mortimer, Delores M., Ed.

    Twelve research papers on Caribbean immigrants to the United States are collected in this volume. Their titles (and authors) are the following: (1) "The United States' Role in Caribbean Migration: Background to the Problem" (Roy S. Bryce-Laporte); (2) "International Migration and the Political Economy of Underdevelopment: Aspects of the…

  3. SOTER-based soil parameter estimates for Latin America and the Caribbean (ver. 1.0)

    NARCIS (Netherlands)

    Batjes, N.H.

    2005-01-01

    This harmonized set of soil parameter estimates for Latin America and the Caribbean was derived from a revised version of the 1:5M Soil and Terrain Database for the region (SOTERLAC, ver. 2.0) and the ISRIC-WISE soil profile database. The land surface of Latin America and the Caribbean has been char

  4. Folate and vitamin B12 status in Latin America and the Caribbean: An update

    Science.gov (United States)

    Background: The current magnitude of folate and vitamin B12 deficiency in Latin America and the Caribbean is uncertain. Objective: To summarize data on plasma or serum vitamin B12 and folate concentrations in Latin America and the Caribbean reported since 1990, a period that covers the era before an...

  5. The marine mammals of the Dutch Caribbean: a comparison between EEZ sectors, contrasts and concerns

    NARCIS (Netherlands)

    Debrot, A.O.; Witte, R.H.; Scheidat, M.

    2011-01-01

    We here provide a synoptic overview and preliminary update of the marine mammals of the Dutch Caribbean EEZ based on 279 cetacean sighting and stranding records. The Dutch Caribbean EEZ is composed of two distinct sectors. One is centered around the leeward Dutch islands of Aruba, Bonaire and Curaça

  6. African-Caribbean cancer consortium for the study of viral, genetic and environmental cancer risk factors

    Directory of Open Access Journals (Sweden)

    Odedina Folakemi

    2007-09-01

    Full Text Available Abstract This is a short summary of a meeting of the "African-Caribbean Cancer Consortium", jointly organized by the University of Pittsburgh, Department of Epidemiology and the University of Pittsburgh Cancer Institute, held in Montego Bay, Jamaica as a satellite meeting at the Caribbean Health Research Council, 52nd Annual Council and Scientific meeting on May 4, 2007.

  7. Biological and management aspects of a Caribbean mangal: West Harbour, Jamaica

    NARCIS (Netherlands)

    Chow, Barbara A.

    1997-01-01

    CHOW, Barbara A., 1997. Biological and management aspects of a Caribbean mangal: West Harbour, Jamaica. Studies Nat. Hist. Caribbean Region 73, Amsterdam, 1997: 1-22. Observations are given for the first time of West Harbour, a pristine south-coast Jamaican mangal. West Harbour is shown to be a dive

  8. Addressing the Challenges and Needs of English-Speaking Caribbean Immigrant Students: Guidelines for School Counselors

    Science.gov (United States)

    Morrison, Stephaney; Bryan, Julia

    2014-01-01

    Caribbean students are among the distinct immigrant groups in U.S. public schools with particular needs to be addressed by school counselors. This article discusses the challenges Caribbean immigrant students face that create obstacles to their academic and personal/social success. Guidelines for school counselors are outlined, which can be used…

  9. OBSTETRICAL CONDITION AND NEONATAL NEUROLOGICAL OUTCOME IN DOMINICA, THE CARIBBEAN - A COMPARATIVE-STUDY

    NARCIS (Netherlands)

    VANDERVEERE, CN; LUTEYN, AJ; SORHAINDO, BA; FERREIRA, CJ; BOERSMA, ER; HUISJES, HJ; TOUWEN, BCL; HADDERSALGRA, M

    1992-01-01

    Risk factors during pregnancy and delivery and neurological morbidity of newborns were assessed in a birth cohort in Dominica, the Caribbean. The data were compared with two reference groups, one from Grenada, the Caribbean, and the other from Groningen, the Netherlands. Despite variations in cultur

  10. Sea voyages of Buddhist monks

    Digital Repository Service at National Institute of Oceanography (India)

    Gaur, A.S.

    stream_size 5 stream_content_type text/plain stream_name Facets_Indian_Civilization_1997_551.pdf.txt stream_source_info Facets_Indian_Civilization_1997_551.pdf.txt Content-Encoding ISO-8859-1 Content-Type text/plain; charset...

  11. Continued Investigation of Leakage and Power Loss Test Results for Competing Turbine Engine Seals

    Science.gov (United States)

    Delgado, Irebert R.; Proctor, Margaret P.

    2007-01-01

    Seal leakage decreases with increasing surface speed due to reduced clearances from disk centrifugal growth. Annular and labyrinth seal leakage are 2-3 times greater than brush and finger seal leakage. Seal leakage rates increase with increasing temperature because of seal clearance growth due to different coefficients of thermal expansion between the seal and test disk. Seal power loss is not strongly affected by inlet temperature. Seal power loss increases with increasing surface speed, seal pressure differential, mass flow rate or flow factor, and radial clearance. The brush and finger seals had nearly the same power loss. Annular and labyrinth seal power loss were higher than finger or brush seal power loss. The brush seal power loss was the lowest and 15-30% lower than annular and labyrinth seal power loss.

  12. Climate Change mitigation opportunities in the Energy sector for the Caribbean region

    DEFF Research Database (Denmark)

    Doral, Wenceslao Carrera; Chinchilla, Oscar Coto; Delgado, Ivan Relova;

    The “Climate change mitigation opportunities in the energy sector for the Caribbean region” has been prepared as part of the implementation of the Caribbean Regional Subcomponent of the MEAs Program for Africa, the Caribbean and the Pacific (ACP MEAs)1. The study has being executed...... in the region interested in linking energyclimate change benefits as part of the on-going and future scaling up efforts for Renewable Energy (RE) dissemination in the Caribbean. The study is based on an analysis of the mitigation potential in 16 countries in the Caribbean Region, due to the interconnection...... of renewable energy to the grid, the modeling of in-country energy sector development and its associated emissions for different scenarios; that include both the “business as usual” and “mitigation” due to the scaling up of Renewable Energy Technology. The study also looks at the experience from participation...

  13. Climate Change and Caribbean Small Island States: The State of Play

    Directory of Open Access Journals (Sweden)

    Benjamin, Lisa

    2010-01-01

    Full Text Available Studies have indicated that climate change is likely to have dramatic negative effects for Caribbean small island developing states. This article considers the main economic effects that climate change is anticipated to have in these vulnerable states, charts the progress of international negotiations at the 2009 Copenhagen conference, and provides a brief analysis of the impact of the Copenhagen Accord on Caribbean Small Island Developing States (SIDS.Although climate change has traditionally been seen solely as an environmental issue, its economic effects on vulnerable developing nations, such as Caribbean SIDS, forces a re-definition of climate change to that of a more complex union of environmental and developmental issues for these states. By highlighting some of the anticipated economic effects of climate change for Caribbean SIDS, the author aims to provide a broader context for the issue of climate change for Caribbean SIDS.

  14. MWTF jumper connector integral seal block development and leak testing

    International Nuclear Information System (INIS)

    In fiscal year 1993, tests of an o-ring/tetraseal retainer designed to replace a gasket-type seal used in PUREX-type process jumper connectors encouraged the design of an improved seal block. This new seal block combines several parts into one unitized component called an integral seal block. This report summarizes development and leak testing of the new integral seal block. The integral seal block uses a standard o-ring nested in a groove to accomplish leak tightness. This seal block eliminates the need to machine acme threads into the lower skirt casting and seal retainers, eliminates tolerance stack-up, reduces parts inventory, and eliminates an unnecessary leak path in the jumper connector assembly. This report also includes test data on various types of o-ring materials subjected to heat and pressure. Materials tested included Viton, Kalrez, and fluorosilicone, with some incidental data on teflon coated silicone o-rings. Test experience clearly demonstrates the need to test each seal material for temperature and pressure in its intended application. Some materials advertised as being open-quotes betterclose quotes at higher temperatures did not perform up to expectations. Inspection of the fluorosilicone and Kalrez seals after thermal testing indicates that they are much more susceptible to heat softening than Viton

  15. Viscoelastic analysis of seals for extended service life

    Science.gov (United States)

    Bower, Mark V.

    1993-01-01

    The space station is being developed for a service life of up to thirty years. As a consequence, the design requirements for the seals to be used are unprecedented. Full scale testing to assure the selected seals can satisfy the design requirements are not feasible. As an alternative, a sub-scale test program (2) has been developed by MSFC to calibrate the analysis tools to be used to certify the proposed design. This research has been conducted in support of the MSFC Integrated Seal Test Program. The ultimate objective of this research is to correlate analysis and test results to qualify the analytical tools which in turn, are to be used to qualify the flight hardware. Seals are simple devices, in wide spread use. The most common type of seal is the O-ring. O-ring seals are typically rings of rubber with a circular cross section. The rings are placed between the surfaces to be sealed, usually in a groove of some design. The particular design may differ based on a number of different factors. This research is focused on O-rings that are staticly compressed by perpendicular clamping forces, commonly referred to as face seals. In this type of seal the O-ring is clamped between the sealing surfaces by loads perpendicular to the circular cross section.

  16. Innovative Seals for Solid Oxide Fuel Cells (SOFC)

    Energy Technology Data Exchange (ETDEWEB)

    Singh, Raj

    2008-06-30

    A functioning SOFC requires different type of seals such as metal-metal, metal-ceramic, and ceramic-ceramic. These seals must function at high temperatures between 600--900{sup o}C and in oxidizing and reducing environments of the fuels and air. Among the different type of seals, the metal-metal seals can be readily fabricated using metal joining, soldering, and brazing techniques. However, the metal-ceramic and ceramic-ceramic seals require significant research and development because the brittle nature of ceramics/glasses can lead to fracture and loss of seal integrity and functionality. Consequently, any seals involving ceramics/glasses require a significant attention and technology development for reliable SOFC operation. This final report is prepared to describe the progress made in the program on the needs, approaches, and performance of high temperature seals for SOFC. In particular, a new concept of self-healing glass seals is pursued for making seals between metal-ceramic material combinations, including some with a significant expansion mismatch.

  17. Assessment of the Empirical Management Method of Coppice Chestnut (Castanea sativa Mill. Forests Practiced by the Monks and its Effect on the Availability of Forest Soil Resources in Mount Athos, Greece

    Directory of Open Access Journals (Sweden)

    Athanasios PAPAIOANNOU

    2013-05-01

    Full Text Available In Greece, chestnut forests (Castanea sativa Mill. occupy more than 30,000 ha of forest land. The species is one of the most significant of the Balkans. It is mainly cultivated for its high quality wood. Concerning cultivation and harvesting, the monks in Mount Athos peninsula in northern Greece practice a special empirical management method for local coppice chestnut forests. Data collected from 9 sampling surfaces, comprising of coppice chestnut stands of three different ages (10, 20 and 40 years old, were analyzed to study the effect of this particular empirical management method on specific soil parameters. Results indicated that, there is a general trend for increased organic matter and nutrient concentrations in the soil of 10 and 40 years old chestnut stands in comparison to those of 20 years of age. Cultivation treatments cause intense alterations on soil properties, leading to severe degradation of nutrient resources.

  18. Child Sexual Abuse in the Eastern Caribbean: The report of a study carried out across the Eastern Caribbean during the period October 2008 to June 2009

    OpenAIRE

    Jones, Adele; Trotman Jemmott, Ena

    2009-01-01

    This report from the Centre for Applied Childhood Studies at the University of Huddersfield in the United Kingdom (UK) and the UK-based Action for Children describes an action research project study that investigated child sexual abuse across several Caribbean countries. The study, "Perceptions of, Attitudes to, and Opinions on Child Sexual Abuse in the Eastern Caribbean", was carried out across 6 countries - Anguilla, Barbados, Dominica, Grenada, Montserrat, and St. Kitts and Nevis - in an e...

  19. Sharks shape the geometry of a selfish seal herd: experimental evidence from seal decoys.

    Science.gov (United States)

    De Vos, Alta; O'Riain, M Justin

    2010-02-23

    Many animals respond to predation risk by forming groups. Evolutionary explanations for group formation in previously ungrouped, but loosely associated prey have typically evoked the selfish herd hypothesis. However, despite over 600 studies across a diverse array of taxa, the critical assumptions of this hypothesis have remained collectively untested, owing to several confounding problems in real predator-prey systems. To solve this, we manipulated the domains of danger of Cape fur seal (Arctocephalus pusillus pusillus) decoys to provide evidence that a selfish reduction in a seals' domain of danger results in a proportional reduction in its predation risk from ambush shark attacks. This behaviour confers a survival advantage to individual seals within a group and explains the evolution of selfish herds in a prey species. These findings empirically elevate Hamilton's selfish herd hypothesis to more than a 'theoretical curiosity'.

  20. Mangroves Enhance Reef Fish Abundance at the Caribbean Regional Scale.

    Directory of Open Access Journals (Sweden)

    Joseph E Serafy

    Full Text Available Several studies conducted at the scale of islands, or small sections of continental coastlines, have suggested that mangrove habitats serve to enhance fish abundances on coral reefs, mainly by providing nursery grounds for several ontogenetically-migrating species. However, evidence of such enhancement at a regional scale has not been reported, and recently, some researchers have questioned the mangrove-reef subsidy effect. In the present study, using two different regression approaches, we pursued two questions related to mangrove-reef connectivity at the Caribbean regional scale: (1 Are reef fish abundances limited by mangrove forest area?; and (2 Are mean reef fish abundances proportional to mangrove forest area after taking human population density and latitude into account? Specifically, we tested for Caribbean-wide mangrove forest area effects on the abundances of 12 reef fishes that have been previously characterized as "mangrove-dependent". Analyzed were data from an ongoing, long-term (20-year citizen-scientist fish monitoring program; coastal human population censuses; and several wetland forest information sources. Quantile regression results supported the notion that mangrove forest area limits the abundance of eight of the 12 fishes examined. Linear mixed-effects regression results, which considered potential human (fishing and habitat degradation and latitudinal influences, suggested that average reef fish densities of at least six of the 12 focal fishes were directly proportional to mangrove forest area. Recent work questioning the mangrove-reef fish subsidy effect likely reflects a failure to: (1 focus analyses on species that use mangroves as nurseries, (2 consider more than the mean fish abundance response to mangrove forest extent; and/or (3 quantitatively account for potentially confounding human impacts, such as fishing pressure and habitat degradation. Our study is the first to demonstrate at a large regional scale (i